[PATCH v7 0/5] linux: Add new syscalls

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* [PATCH v7 0/5] linux: Add new syscalls
@ 2022-06-24 19:59 Adhemerval Zanella
  2022-06-24 19:59 ` [PATCH v7 1/5] linux: Add fsconfig Adhemerval Zanella
                   ` (4 more replies)
  0 siblings, 5 replies; 26+ messages in thread
From: Adhemerval Zanella @ 2022-06-24 19:59 UTC (permalink / raw)
  To: libc-alpha, Carlos O'Donell

This set adds the new mount API added Linux 5.2: fsconfig,
fspick, and open_tree.  It also adds mount_setattr which was
added on Linux 5.12.

This is complete redesign of the mount API to allow more flexibility
with mount points, specially when used along namespaces.

Adhemerval Zanella (5):
  linux: Add fsconfig
  linux: Add fspick
  linux: Add open_tree
  linux: Add tst-mount to check for Linux new mount API
  linux: Add mount_setattr

 NEWS                                          |   9 +-
 sysdeps/unix/sysv/linux/Makefile              |   1 +
 sysdeps/unix/sysv/linux/Versions              |   4 +
 sysdeps/unix/sysv/linux/aarch64/libc.abilist  |   4 +
 sysdeps/unix/sysv/linux/alpha/libc.abilist    |   4 +
 sysdeps/unix/sysv/linux/arc/libc.abilist      |   4 +
 sysdeps/unix/sysv/linux/arm/be/libc.abilist   |   4 +
 sysdeps/unix/sysv/linux/arm/le/libc.abilist   |   4 +
 sysdeps/unix/sysv/linux/csky/libc.abilist     |   4 +
 sysdeps/unix/sysv/linux/hppa/libc.abilist     |   4 +
 sysdeps/unix/sysv/linux/i386/libc.abilist     |   4 +
 sysdeps/unix/sysv/linux/ia64/libc.abilist     |   4 +
 .../sysv/linux/m68k/coldfire/libc.abilist     |   4 +
 .../unix/sysv/linux/m68k/m680x0/libc.abilist  |   4 +
 .../sysv/linux/microblaze/be/libc.abilist     |   4 +
 .../sysv/linux/microblaze/le/libc.abilist     |   4 +
 .../sysv/linux/mips/mips32/fpu/libc.abilist   |   4 +
 .../sysv/linux/mips/mips32/nofpu/libc.abilist |   4 +
 .../sysv/linux/mips/mips64/n32/libc.abilist   |   4 +
 .../sysv/linux/mips/mips64/n64/libc.abilist   |   4 +
 sysdeps/unix/sysv/linux/nios2/libc.abilist    |   4 +
 sysdeps/unix/sysv/linux/or1k/libc.abilist     |   4 +
 .../linux/powerpc/powerpc32/fpu/libc.abilist  |   4 +
 .../powerpc/powerpc32/nofpu/libc.abilist      |   4 +
 .../linux/powerpc/powerpc64/be/libc.abilist   |   4 +
 .../linux/powerpc/powerpc64/le/libc.abilist   |   4 +
 .../unix/sysv/linux/riscv/rv32/libc.abilist   |   4 +
 .../unix/sysv/linux/riscv/rv64/libc.abilist   |   4 +
 .../unix/sysv/linux/s390/s390-32/libc.abilist |   4 +
 .../unix/sysv/linux/s390/s390-64/libc.abilist |   4 +
 sysdeps/unix/sysv/linux/sh/be/libc.abilist    |   4 +
 sysdeps/unix/sysv/linux/sh/le/libc.abilist    |   4 +
 .../sysv/linux/sparc/sparc32/libc.abilist     |   4 +
 .../sysv/linux/sparc/sparc64/libc.abilist     |   4 +
 sysdeps/unix/sysv/linux/sys/mount.h           |  69 ++++++++++
 sysdeps/unix/sysv/linux/syscalls.list         |   4 +
 sysdeps/unix/sysv/linux/tst-mount-consts.py   |   7 +-
 sysdeps/unix/sysv/linux/tst-mount.c           | 119 ++++++++++++++++++
 .../unix/sysv/linux/x86_64/64/libc.abilist    |   4 +
 .../unix/sysv/linux/x86_64/x32/libc.abilist   |   4 +
 40 files changed, 340 insertions(+), 5 deletions(-)
 create mode 100644 sysdeps/unix/sysv/linux/tst-mount.c

-- 
2.34.1


^ permalink raw reply	[flat|nested] 26+ messages in thread

* [PATCH v7 1/5] linux: Add fsconfig
  2022-06-24 19:59 [PATCH v7 0/5] linux: Add new syscalls Adhemerval Zanella
@ 2022-06-24 19:59 ` Adhemerval Zanella
  2022-07-04 21:36   ` Carlos O'Donell
  2022-06-24 19:59 ` [PATCH v7 2/5] linux: Add fspick Adhemerval Zanella
                   ` (3 subsequent siblings)
  4 siblings, 1 reply; 26+ messages in thread
From: Adhemerval Zanella @ 2022-06-24 19:59 UTC (permalink / raw)
  To: libc-alpha, Carlos O'Donell

It was added on Linux 5.2 (ecdab150fddb42fe6a739335257949220033b782)
as a way to a configure filesystem creation context and trigger
actions upon it, to be used in conjunction with fsopen, fspick and
fsmount.

The fsconfig_command commands are currently only defined as an enum,
so they can't be checked on tst-mount-consts.py with current test
support.
---
 NEWS                                          |  8 +++---
 sysdeps/unix/sysv/linux/Versions              |  1 +
 sysdeps/unix/sysv/linux/aarch64/libc.abilist  |  1 +
 sysdeps/unix/sysv/linux/alpha/libc.abilist    |  1 +
 sysdeps/unix/sysv/linux/arc/libc.abilist      |  1 +
 sysdeps/unix/sysv/linux/arm/be/libc.abilist   |  1 +
 sysdeps/unix/sysv/linux/arm/le/libc.abilist   |  1 +
 sysdeps/unix/sysv/linux/csky/libc.abilist     |  1 +
 sysdeps/unix/sysv/linux/hppa/libc.abilist     |  1 +
 sysdeps/unix/sysv/linux/i386/libc.abilist     |  1 +
 sysdeps/unix/sysv/linux/ia64/libc.abilist     |  1 +
 .../sysv/linux/m68k/coldfire/libc.abilist     |  1 +
 .../unix/sysv/linux/m68k/m680x0/libc.abilist  |  1 +
 .../sysv/linux/microblaze/be/libc.abilist     |  1 +
 .../sysv/linux/microblaze/le/libc.abilist     |  1 +
 .../sysv/linux/mips/mips32/fpu/libc.abilist   |  1 +
 .../sysv/linux/mips/mips32/nofpu/libc.abilist |  1 +
 .../sysv/linux/mips/mips64/n32/libc.abilist   |  1 +
 .../sysv/linux/mips/mips64/n64/libc.abilist   |  1 +
 sysdeps/unix/sysv/linux/nios2/libc.abilist    |  1 +
 sysdeps/unix/sysv/linux/or1k/libc.abilist     |  1 +
 .../linux/powerpc/powerpc32/fpu/libc.abilist  |  1 +
 .../powerpc/powerpc32/nofpu/libc.abilist      |  1 +
 .../linux/powerpc/powerpc64/be/libc.abilist   |  1 +
 .../linux/powerpc/powerpc64/le/libc.abilist   |  1 +
 .../unix/sysv/linux/riscv/rv32/libc.abilist   |  1 +
 .../unix/sysv/linux/riscv/rv64/libc.abilist   |  1 +
 .../unix/sysv/linux/s390/s390-32/libc.abilist |  1 +
 .../unix/sysv/linux/s390/s390-64/libc.abilist |  1 +
 sysdeps/unix/sysv/linux/sh/be/libc.abilist    |  1 +
 sysdeps/unix/sysv/linux/sh/le/libc.abilist    |  1 +
 .../sysv/linux/sparc/sparc32/libc.abilist     |  1 +
 .../sysv/linux/sparc/sparc64/libc.abilist     |  1 +
 sysdeps/unix/sysv/linux/sys/mount.h           | 26 +++++++++++++++++++
 sysdeps/unix/sysv/linux/syscalls.list         |  1 +
 sysdeps/unix/sysv/linux/tst-mount-consts.py   |  2 ++
 .../unix/sysv/linux/x86_64/64/libc.abilist    |  1 +
 .../unix/sysv/linux/x86_64/x32/libc.abilist   |  1 +
 38 files changed, 67 insertions(+), 4 deletions(-)

diff --git a/NEWS b/NEWS
index b0a3d7e512..83bb660429 100644
--- a/NEWS
+++ b/NEWS
@@ -41,10 +41,10 @@ Major new features:
   have adverse impact.  It is incompatible with EDNS0 usage and DNSSEC
   validation by applications.
 
-* On Linux, the fsopen, fsmount, and move_mount functions have been added.
-  They are part of the new Linux kernel mount APIs that allow applications
-  to more flexibly configure and operate on filesystem mounts.  The new
-  mount APIs are specifically designed to work with namespaces.
+* On Linux, the fsopen, fsmount, move_mount, and fsconfig functions have
+  been added.  They are part of the new Linux kernel mount APIs that allow
+  applications to more flexibly configure and operate on filesystem mounts.
+  The new mount APIs are specifically designed to work with namespaces.
 
 Deprecated and removed features, and other changes affecting compatibility:
 
diff --git a/sysdeps/unix/sysv/linux/Versions b/sysdeps/unix/sysv/linux/Versions
index 26d552ba3b..831a366492 100644
--- a/sysdeps/unix/sysv/linux/Versions
+++ b/sysdeps/unix/sysv/linux/Versions
@@ -300,6 +300,7 @@ libc {
     epoll_pwait2;
   }
   GLIBC_2.36 {
+    fsconfig;
     fsmount;
     fsopen;
     move_mount;
diff --git a/sysdeps/unix/sysv/linux/aarch64/libc.abilist b/sysdeps/unix/sysv/linux/aarch64/libc.abilist
index 8dba065b81..0b8699dd94 100644
--- a/sysdeps/unix/sysv/linux/aarch64/libc.abilist
+++ b/sysdeps/unix/sysv/linux/aarch64/libc.abilist
@@ -2616,6 +2616,7 @@ GLIBC_2.35 __memcmpeq F
 GLIBC_2.35 _dl_find_object F
 GLIBC_2.35 epoll_pwait2 F
 GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
+GLIBC_2.36 fsconfig F
 GLIBC_2.36 fsmount F
 GLIBC_2.36 fsopen F
 GLIBC_2.36 move_mount F
diff --git a/sysdeps/unix/sysv/linux/alpha/libc.abilist b/sysdeps/unix/sysv/linux/alpha/libc.abilist
index 08f4750022..dbc552de45 100644
--- a/sysdeps/unix/sysv/linux/alpha/libc.abilist
+++ b/sysdeps/unix/sysv/linux/alpha/libc.abilist
@@ -2713,6 +2713,7 @@ GLIBC_2.35 __memcmpeq F
 GLIBC_2.35 _dl_find_object F
 GLIBC_2.35 epoll_pwait2 F
 GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
+GLIBC_2.36 fsconfig F
 GLIBC_2.36 fsmount F
 GLIBC_2.36 fsopen F
 GLIBC_2.36 move_mount F
diff --git a/sysdeps/unix/sysv/linux/arc/libc.abilist b/sysdeps/unix/sysv/linux/arc/libc.abilist
index 75db763023..b8411014f0 100644
--- a/sysdeps/unix/sysv/linux/arc/libc.abilist
+++ b/sysdeps/unix/sysv/linux/arc/libc.abilist
@@ -2377,6 +2377,7 @@ GLIBC_2.35 __memcmpeq F
 GLIBC_2.35 _dl_find_object F
 GLIBC_2.35 epoll_pwait2 F
 GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
+GLIBC_2.36 fsconfig F
 GLIBC_2.36 fsmount F
 GLIBC_2.36 fsopen F
 GLIBC_2.36 move_mount F
diff --git a/sysdeps/unix/sysv/linux/arm/be/libc.abilist b/sysdeps/unix/sysv/linux/arm/be/libc.abilist
index fa33f317ac..618467399b 100644
--- a/sysdeps/unix/sysv/linux/arm/be/libc.abilist
+++ b/sysdeps/unix/sysv/linux/arm/be/libc.abilist
@@ -496,6 +496,7 @@ GLIBC_2.35 __memcmpeq F
 GLIBC_2.35 _dl_find_object F
 GLIBC_2.35 epoll_pwait2 F
 GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
+GLIBC_2.36 fsconfig F
 GLIBC_2.36 fsmount F
 GLIBC_2.36 fsopen F
 GLIBC_2.36 move_mount F
diff --git a/sysdeps/unix/sysv/linux/arm/le/libc.abilist b/sysdeps/unix/sysv/linux/arm/le/libc.abilist
index dba2e4ce42..3afbd61ba3 100644
--- a/sysdeps/unix/sysv/linux/arm/le/libc.abilist
+++ b/sysdeps/unix/sysv/linux/arm/le/libc.abilist
@@ -493,6 +493,7 @@ GLIBC_2.35 __memcmpeq F
 GLIBC_2.35 _dl_find_object F
 GLIBC_2.35 epoll_pwait2 F
 GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
+GLIBC_2.36 fsconfig F
 GLIBC_2.36 fsmount F
 GLIBC_2.36 fsopen F
 GLIBC_2.36 move_mount F
diff --git a/sysdeps/unix/sysv/linux/csky/libc.abilist b/sysdeps/unix/sysv/linux/csky/libc.abilist
index e6ff921c29..189835a12f 100644
--- a/sysdeps/unix/sysv/linux/csky/libc.abilist
+++ b/sysdeps/unix/sysv/linux/csky/libc.abilist
@@ -2652,6 +2652,7 @@ GLIBC_2.35 __memcmpeq F
 GLIBC_2.35 _dl_find_object F
 GLIBC_2.35 epoll_pwait2 F
 GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
+GLIBC_2.36 fsconfig F
 GLIBC_2.36 fsmount F
 GLIBC_2.36 fsopen F
 GLIBC_2.36 move_mount F
diff --git a/sysdeps/unix/sysv/linux/hppa/libc.abilist b/sysdeps/unix/sysv/linux/hppa/libc.abilist
index 8a40cece83..41d645f3a0 100644
--- a/sysdeps/unix/sysv/linux/hppa/libc.abilist
+++ b/sysdeps/unix/sysv/linux/hppa/libc.abilist
@@ -2601,6 +2601,7 @@ GLIBC_2.35 __memcmpeq F
 GLIBC_2.35 _dl_find_object F
 GLIBC_2.35 epoll_pwait2 F
 GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
+GLIBC_2.36 fsconfig F
 GLIBC_2.36 fsmount F
 GLIBC_2.36 fsopen F
 GLIBC_2.36 move_mount F
diff --git a/sysdeps/unix/sysv/linux/i386/libc.abilist b/sysdeps/unix/sysv/linux/i386/libc.abilist
index a89826049f..c39a33655a 100644
--- a/sysdeps/unix/sysv/linux/i386/libc.abilist
+++ b/sysdeps/unix/sysv/linux/i386/libc.abilist
@@ -2785,6 +2785,7 @@ GLIBC_2.35 __memcmpeq F
 GLIBC_2.35 _dl_find_object F
 GLIBC_2.35 epoll_pwait2 F
 GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
+GLIBC_2.36 fsconfig F
 GLIBC_2.36 fsmount F
 GLIBC_2.36 fsopen F
 GLIBC_2.36 move_mount F
diff --git a/sysdeps/unix/sysv/linux/ia64/libc.abilist b/sysdeps/unix/sysv/linux/ia64/libc.abilist
index d1d96b7469..611b31fc1d 100644
--- a/sysdeps/unix/sysv/linux/ia64/libc.abilist
+++ b/sysdeps/unix/sysv/linux/ia64/libc.abilist
@@ -2551,6 +2551,7 @@ GLIBC_2.35 __memcmpeq F
 GLIBC_2.35 _dl_find_object F
 GLIBC_2.35 epoll_pwait2 F
 GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
+GLIBC_2.36 fsconfig F
 GLIBC_2.36 fsmount F
 GLIBC_2.36 fsopen F
 GLIBC_2.36 move_mount F
diff --git a/sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist b/sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist
index 63a62f267a..8504a94c75 100644
--- a/sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist
+++ b/sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist
@@ -497,6 +497,7 @@ GLIBC_2.35 __memcmpeq F
 GLIBC_2.35 _dl_find_object F
 GLIBC_2.35 epoll_pwait2 F
 GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
+GLIBC_2.36 fsconfig F
 GLIBC_2.36 fsmount F
 GLIBC_2.36 fsopen F
 GLIBC_2.36 move_mount F
diff --git a/sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist b/sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist
index f68325f9bc..2cf5ca75d2 100644
--- a/sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist
+++ b/sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist
@@ -2728,6 +2728,7 @@ GLIBC_2.35 __memcmpeq F
 GLIBC_2.35 _dl_find_object F
 GLIBC_2.35 epoll_pwait2 F
 GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
+GLIBC_2.36 fsconfig F
 GLIBC_2.36 fsmount F
 GLIBC_2.36 fsopen F
 GLIBC_2.36 move_mount F
diff --git a/sysdeps/unix/sysv/linux/microblaze/be/libc.abilist b/sysdeps/unix/sysv/linux/microblaze/be/libc.abilist
index 247af2075c..667098908d 100644
--- a/sysdeps/unix/sysv/linux/microblaze/be/libc.abilist
+++ b/sysdeps/unix/sysv/linux/microblaze/be/libc.abilist
@@ -2701,6 +2701,7 @@ GLIBC_2.35 __memcmpeq F
 GLIBC_2.35 _dl_find_object F
 GLIBC_2.35 epoll_pwait2 F
 GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
+GLIBC_2.36 fsconfig F
 GLIBC_2.36 fsmount F
 GLIBC_2.36 fsopen F
 GLIBC_2.36 move_mount F
diff --git a/sysdeps/unix/sysv/linux/microblaze/le/libc.abilist b/sysdeps/unix/sysv/linux/microblaze/le/libc.abilist
index b0ac3f9009..a131265c9c 100644
--- a/sysdeps/unix/sysv/linux/microblaze/le/libc.abilist
+++ b/sysdeps/unix/sysv/linux/microblaze/le/libc.abilist
@@ -2698,6 +2698,7 @@ GLIBC_2.35 __memcmpeq F
 GLIBC_2.35 _dl_find_object F
 GLIBC_2.35 epoll_pwait2 F
 GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
+GLIBC_2.36 fsconfig F
 GLIBC_2.36 fsmount F
 GLIBC_2.36 fsopen F
 GLIBC_2.36 move_mount F
diff --git a/sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist b/sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist
index b22cd6bf2f..9a083512f7 100644
--- a/sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist
+++ b/sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist
@@ -2693,6 +2693,7 @@ GLIBC_2.35 __memcmpeq F
 GLIBC_2.35 _dl_find_object F
 GLIBC_2.35 epoll_pwait2 F
 GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
+GLIBC_2.36 fsconfig F
 GLIBC_2.36 fsmount F
 GLIBC_2.36 fsopen F
 GLIBC_2.36 move_mount F
diff --git a/sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist b/sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist
index 12fc2cce3e..71b952dc6a 100644
--- a/sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist
+++ b/sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist
@@ -2691,6 +2691,7 @@ GLIBC_2.35 __memcmpeq F
 GLIBC_2.35 _dl_find_object F
 GLIBC_2.35 epoll_pwait2 F
 GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
+GLIBC_2.36 fsconfig F
 GLIBC_2.36 fsmount F
 GLIBC_2.36 fsopen F
 GLIBC_2.36 move_mount F
diff --git a/sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist b/sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist
index d3e96dfd43..f824d143fa 100644
--- a/sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist
+++ b/sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist
@@ -2699,6 +2699,7 @@ GLIBC_2.35 __memcmpeq F
 GLIBC_2.35 _dl_find_object F
 GLIBC_2.35 epoll_pwait2 F
 GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
+GLIBC_2.36 fsconfig F
 GLIBC_2.36 fsmount F
 GLIBC_2.36 fsopen F
 GLIBC_2.36 move_mount F
diff --git a/sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist b/sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist
index cb58ed4db0..70ff16e752 100644
--- a/sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist
+++ b/sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist
@@ -2602,6 +2602,7 @@ GLIBC_2.35 __memcmpeq F
 GLIBC_2.35 _dl_find_object F
 GLIBC_2.35 epoll_pwait2 F
 GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
+GLIBC_2.36 fsconfig F
 GLIBC_2.36 fsmount F
 GLIBC_2.36 fsopen F
 GLIBC_2.36 move_mount F
diff --git a/sysdeps/unix/sysv/linux/nios2/libc.abilist b/sysdeps/unix/sysv/linux/nios2/libc.abilist
index 61ad58a599..e3e30f9f72 100644
--- a/sysdeps/unix/sysv/linux/nios2/libc.abilist
+++ b/sysdeps/unix/sysv/linux/nios2/libc.abilist
@@ -2740,6 +2740,7 @@ GLIBC_2.35 __memcmpeq F
 GLIBC_2.35 _dl_find_object F
 GLIBC_2.35 epoll_pwait2 F
 GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
+GLIBC_2.36 fsconfig F
 GLIBC_2.36 fsmount F
 GLIBC_2.36 fsopen F
 GLIBC_2.36 move_mount F
diff --git a/sysdeps/unix/sysv/linux/or1k/libc.abilist b/sysdeps/unix/sysv/linux/or1k/libc.abilist
index 1260dc4e2e..c2c6c1678f 100644
--- a/sysdeps/unix/sysv/linux/or1k/libc.abilist
+++ b/sysdeps/unix/sysv/linux/or1k/libc.abilist
@@ -2123,6 +2123,7 @@ GLIBC_2.35 wprintf F
 GLIBC_2.35 write F
 GLIBC_2.35 writev F
 GLIBC_2.35 wscanf F
+GLIBC_2.36 fsconfig F
 GLIBC_2.36 fsmount F
 GLIBC_2.36 fsopen F
 GLIBC_2.36 move_mount F
diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist b/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist
index 363939762c..0ca95aa512 100644
--- a/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist
+++ b/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist
@@ -2755,6 +2755,7 @@ GLIBC_2.35 __memcmpeq F
 GLIBC_2.35 _dl_find_object F
 GLIBC_2.35 epoll_pwait2 F
 GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
+GLIBC_2.36 fsconfig F
 GLIBC_2.36 fsmount F
 GLIBC_2.36 fsopen F
 GLIBC_2.36 move_mount F
diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist b/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist
index f512ad8baf..2256356cdb 100644
--- a/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist
+++ b/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist
@@ -2788,6 +2788,7 @@ GLIBC_2.35 __memcmpeq F
 GLIBC_2.35 _dl_find_object F
 GLIBC_2.35 epoll_pwait2 F
 GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
+GLIBC_2.36 fsconfig F
 GLIBC_2.36 fsmount F
 GLIBC_2.36 fsopen F
 GLIBC_2.36 move_mount F
diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc64/be/libc.abilist b/sysdeps/unix/sysv/linux/powerpc/powerpc64/be/libc.abilist
index c9bdc9859c..b27e3b9c7c 100644
--- a/sysdeps/unix/sysv/linux/powerpc/powerpc64/be/libc.abilist
+++ b/sysdeps/unix/sysv/linux/powerpc/powerpc64/be/libc.abilist
@@ -2510,6 +2510,7 @@ GLIBC_2.35 __memcmpeq F
 GLIBC_2.35 _dl_find_object F
 GLIBC_2.35 epoll_pwait2 F
 GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
+GLIBC_2.36 fsconfig F
 GLIBC_2.36 fsmount F
 GLIBC_2.36 fsopen F
 GLIBC_2.36 move_mount F
diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc64/le/libc.abilist b/sysdeps/unix/sysv/linux/powerpc/powerpc64/le/libc.abilist
index f091be30bd..ac3897e8c6 100644
--- a/sysdeps/unix/sysv/linux/powerpc/powerpc64/le/libc.abilist
+++ b/sysdeps/unix/sysv/linux/powerpc/powerpc64/le/libc.abilist
@@ -2812,6 +2812,7 @@ GLIBC_2.35 __memcmpeq F
 GLIBC_2.35 _dl_find_object F
 GLIBC_2.35 epoll_pwait2 F
 GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
+GLIBC_2.36 fsconfig F
 GLIBC_2.36 fsmount F
 GLIBC_2.36 fsopen F
 GLIBC_2.36 move_mount F
diff --git a/sysdeps/unix/sysv/linux/riscv/rv32/libc.abilist b/sysdeps/unix/sysv/linux/riscv/rv32/libc.abilist
index 7ea73f9af8..f7abfd54e3 100644
--- a/sysdeps/unix/sysv/linux/riscv/rv32/libc.abilist
+++ b/sysdeps/unix/sysv/linux/riscv/rv32/libc.abilist
@@ -2379,6 +2379,7 @@ GLIBC_2.35 __memcmpeq F
 GLIBC_2.35 _dl_find_object F
 GLIBC_2.35 epoll_pwait2 F
 GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
+GLIBC_2.36 fsconfig F
 GLIBC_2.36 fsmount F
 GLIBC_2.36 fsopen F
 GLIBC_2.36 move_mount F
diff --git a/sysdeps/unix/sysv/linux/riscv/rv64/libc.abilist b/sysdeps/unix/sysv/linux/riscv/rv64/libc.abilist
index 333fa62714..d4ba82b0a7 100644
--- a/sysdeps/unix/sysv/linux/riscv/rv64/libc.abilist
+++ b/sysdeps/unix/sysv/linux/riscv/rv64/libc.abilist
@@ -2579,6 +2579,7 @@ GLIBC_2.35 __memcmpeq F
 GLIBC_2.35 _dl_find_object F
 GLIBC_2.35 epoll_pwait2 F
 GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
+GLIBC_2.36 fsconfig F
 GLIBC_2.36 fsmount F
 GLIBC_2.36 fsopen F
 GLIBC_2.36 move_mount F
diff --git a/sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist b/sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist
index a867467b12..e15c8f1c50 100644
--- a/sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist
+++ b/sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist
@@ -2753,6 +2753,7 @@ GLIBC_2.35 __memcmpeq F
 GLIBC_2.35 _dl_find_object F
 GLIBC_2.35 epoll_pwait2 F
 GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
+GLIBC_2.36 fsconfig F
 GLIBC_2.36 fsmount F
 GLIBC_2.36 fsopen F
 GLIBC_2.36 move_mount F
diff --git a/sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist b/sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist
index dbad5b3163..3f74bf6af0 100644
--- a/sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist
+++ b/sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist
@@ -2547,6 +2547,7 @@ GLIBC_2.35 __memcmpeq F
 GLIBC_2.35 _dl_find_object F
 GLIBC_2.35 epoll_pwait2 F
 GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
+GLIBC_2.36 fsconfig F
 GLIBC_2.36 fsmount F
 GLIBC_2.36 fsopen F
 GLIBC_2.36 move_mount F
diff --git a/sysdeps/unix/sysv/linux/sh/be/libc.abilist b/sysdeps/unix/sysv/linux/sh/be/libc.abilist
index 6f755cc173..e9610718d2 100644
--- a/sysdeps/unix/sysv/linux/sh/be/libc.abilist
+++ b/sysdeps/unix/sysv/linux/sh/be/libc.abilist
@@ -2608,6 +2608,7 @@ GLIBC_2.35 __memcmpeq F
 GLIBC_2.35 _dl_find_object F
 GLIBC_2.35 epoll_pwait2 F
 GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
+GLIBC_2.36 fsconfig F
 GLIBC_2.36 fsmount F
 GLIBC_2.36 fsopen F
 GLIBC_2.36 move_mount F
diff --git a/sysdeps/unix/sysv/linux/sh/le/libc.abilist b/sysdeps/unix/sysv/linux/sh/le/libc.abilist
index 77d936aa3c..754c495a6f 100644
--- a/sysdeps/unix/sysv/linux/sh/le/libc.abilist
+++ b/sysdeps/unix/sysv/linux/sh/le/libc.abilist
@@ -2605,6 +2605,7 @@ GLIBC_2.35 __memcmpeq F
 GLIBC_2.35 _dl_find_object F
 GLIBC_2.35 epoll_pwait2 F
 GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
+GLIBC_2.36 fsconfig F
 GLIBC_2.36 fsmount F
 GLIBC_2.36 fsopen F
 GLIBC_2.36 move_mount F
diff --git a/sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist b/sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist
index 09bb4363e1..368a9177e3 100644
--- a/sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist
+++ b/sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist
@@ -2748,6 +2748,7 @@ GLIBC_2.35 __memcmpeq F
 GLIBC_2.35 _dl_find_object F
 GLIBC_2.35 epoll_pwait2 F
 GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
+GLIBC_2.36 fsconfig F
 GLIBC_2.36 fsmount F
 GLIBC_2.36 fsopen F
 GLIBC_2.36 move_mount F
diff --git a/sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist b/sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist
index 9df9cb6adb..d644201962 100644
--- a/sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist
+++ b/sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist
@@ -2574,6 +2574,7 @@ GLIBC_2.35 __memcmpeq F
 GLIBC_2.35 _dl_find_object F
 GLIBC_2.35 epoll_pwait2 F
 GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
+GLIBC_2.36 fsconfig F
 GLIBC_2.36 fsmount F
 GLIBC_2.36 fsopen F
 GLIBC_2.36 move_mount F
diff --git a/sysdeps/unix/sysv/linux/sys/mount.h b/sysdeps/unix/sysv/linux/sys/mount.h
index 50ec65c7a3..ef2c72f31c 100644
--- a/sysdeps/unix/sysv/linux/sys/mount.h
+++ b/sysdeps/unix/sysv/linux/sys/mount.h
@@ -163,6 +163,27 @@ enum
 #define MOVE_MOUNT_T_EMPTY_PATH 0x00000040 /* Empty to path permitted */
 #define MOVE_MOUNT_SET_GROUP    0x00000100 /* Set sharing group instead */
 
+/* The type of fsconfig call made.   */
+enum fsconfig_command
+{
+  FSCONFIG_SET_FLAG       = 0,    /* Set parameter, supplying no value */
+#define FSCONFIG_SET_FLAG FSCONFIG_SET_FLAG
+  FSCONFIG_SET_STRING     = 1,    /* Set parameter, supplying a string value */
+#define FSCONFIG_SET_STRING FSCONFIG_SET_STRING
+  FSCONFIG_SET_BINARY     = 2,    /* Set parameter, supplying a binary blob value */
+#define FSCONFIG_SET_BINARY FSCONFIG_SET_BINARY
+  FSCONFIG_SET_PATH       = 3,    /* Set parameter, supplying an object by path */
+#define FSCONFIG_SET_PATH FSCONFIG_SET_PATH
+  FSCONFIG_SET_PATH_EMPTY = 4,    /* Set parameter, supplying an object by (empty) path */
+#define FSCONFIG_SET_PATH_EMPTY FSCONFIG_SET_PATH_EMPTY
+  FSCONFIG_SET_FD         = 5,    /* Set parameter, supplying an object by fd */
+#define FSCONFIG_SET_FD FSCONFIG_SET_FD
+  FSCONFIG_CMD_CREATE     = 6,    /* Invoke superblock creation */
+#define FSCONFIG_CMD_CREATE FSCONFIG_CMD_CREATE
+  FSCONFIG_CMD_RECONFIGURE = 7,   /* Invoke superblock reconfiguration */
+#define FSCONFIG_CMD_RECONFIGURE FSCONFIG_CMD_RECONFIGURE
+};
+
 
 __BEGIN_DECLS
 
@@ -193,6 +214,11 @@ extern int move_mount (int __from_dfd, const char *__from_pathname,
 		       int __to_dfd, const char *__to_pathname,
 		       unsigned int flags) __THROW;
 
+/* Set parameters and trigger CMD action on the FD context.  KEY, VALUE,
+   and AUX are used depending ng of the CMD.  */
+extern int fsconfig (int __fd, unsigned int __cmd, const char *__key,
+		     const void *__value, int __aux) __THROW;
+
 __END_DECLS
 
 #endif /* _SYS_MOUNT_H */
diff --git a/sysdeps/unix/sysv/linux/syscalls.list b/sysdeps/unix/sysv/linux/syscalls.list
index 7368210cd1..b2c8df5278 100644
--- a/sysdeps/unix/sysv/linux/syscalls.list
+++ b/sysdeps/unix/sysv/linux/syscalls.list
@@ -12,6 +12,7 @@ epoll_ctl	EXTRA	epoll_ctl	i:iiip	epoll_ctl
 eventfd		EXTRA	eventfd2	i:ii	eventfd
 execve		-	execve		i:spp	__execve	execve
 flock		-	flock		i:ii	__flock		flock
+fsconfig	EXTRA	fsconfig	i:iUsNi	fsconfig
 fsmount		EXTRA	fsmount		i:iUU	fsmount
 fsopen		EXTRA	fsopen		i:sU	fsopen
 get_kernel_syms	EXTRA	get_kernel_syms	i:p	__compat_get_kernel_syms	get_kernel_syms@GLIBC_2.0:GLIBC_2.23
diff --git a/sysdeps/unix/sysv/linux/tst-mount-consts.py b/sysdeps/unix/sysv/linux/tst-mount-consts.py
index aa9c02796e..dd4d50f202 100755
--- a/sysdeps/unix/sysv/linux/tst-mount-consts.py
+++ b/sysdeps/unix/sysv/linux/tst-mount-consts.py
@@ -49,6 +49,8 @@ def main():
                 linux_version_glibc > linux_version_headers,
                 linux_version_headers > linux_version_glibc)
 
+    # Skip testing FS_CONFIG commands since they are only enums in the kernel
+    # header.
     status = max(
         check('FSOPEN_.*'),
         check('FSMOUNT_.*'),
diff --git a/sysdeps/unix/sysv/linux/x86_64/64/libc.abilist b/sysdeps/unix/sysv/linux/x86_64/64/libc.abilist
index 4829450ad0..0ff913610c 100644
--- a/sysdeps/unix/sysv/linux/x86_64/64/libc.abilist
+++ b/sysdeps/unix/sysv/linux/x86_64/64/libc.abilist
@@ -2525,6 +2525,7 @@ GLIBC_2.35 __memcmpeq F
 GLIBC_2.35 _dl_find_object F
 GLIBC_2.35 epoll_pwait2 F
 GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
+GLIBC_2.36 fsconfig F
 GLIBC_2.36 fsmount F
 GLIBC_2.36 fsopen F
 GLIBC_2.36 move_mount F
diff --git a/sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist b/sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist
index caea228bcb..2aa67048ac 100644
--- a/sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist
+++ b/sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist
@@ -2631,6 +2631,7 @@ GLIBC_2.35 __memcmpeq F
 GLIBC_2.35 _dl_find_object F
 GLIBC_2.35 epoll_pwait2 F
 GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
+GLIBC_2.36 fsconfig F
 GLIBC_2.36 fsmount F
 GLIBC_2.36 fsopen F
 GLIBC_2.36 move_mount F
-- 
2.34.1


^ permalink raw reply	[flat|nested] 26+ messages in thread

* Re: [PATCH v7 1/5] linux: Add fsconfig
  2022-06-24 19:59 ` [PATCH v7 1/5] linux: Add fsconfig Adhemerval Zanella
@ 2022-07-04 21:36   ` Carlos O'Donell
  2022-07-11  8:16     ` Fangrui Song
  0 siblings, 1 reply; 26+ messages in thread
From: Carlos O'Donell @ 2022-07-04 21:36 UTC (permalink / raw)
  To: Adhemerval Zanella, libc-alpha

On 6/24/22 15:59, Adhemerval Zanella wrote:
> It was added on Linux 5.2 (ecdab150fddb42fe6a739335257949220033b782)
> as a way to a configure filesystem creation context and trigger
> actions upon it, to be used in conjunction with fsopen, fspick and
> fsmount.
> 
> The fsconfig_command commands are currently only defined as an enum,
> so they can't be checked on tst-mount-consts.py with current test
> support.

LGTM. API uses const void * correctly and syscall wrapper signature matches.

Reviewed-by: Carlos O'Donell <carlos@redhat.com>

> ---
>  NEWS                                          |  8 +++---
>  sysdeps/unix/sysv/linux/Versions              |  1 +
>  sysdeps/unix/sysv/linux/aarch64/libc.abilist  |  1 +
>  sysdeps/unix/sysv/linux/alpha/libc.abilist    |  1 +
>  sysdeps/unix/sysv/linux/arc/libc.abilist      |  1 +
>  sysdeps/unix/sysv/linux/arm/be/libc.abilist   |  1 +
>  sysdeps/unix/sysv/linux/arm/le/libc.abilist   |  1 +
>  sysdeps/unix/sysv/linux/csky/libc.abilist     |  1 +
>  sysdeps/unix/sysv/linux/hppa/libc.abilist     |  1 +
>  sysdeps/unix/sysv/linux/i386/libc.abilist     |  1 +
>  sysdeps/unix/sysv/linux/ia64/libc.abilist     |  1 +
>  .../sysv/linux/m68k/coldfire/libc.abilist     |  1 +
>  .../unix/sysv/linux/m68k/m680x0/libc.abilist  |  1 +
>  .../sysv/linux/microblaze/be/libc.abilist     |  1 +
>  .../sysv/linux/microblaze/le/libc.abilist     |  1 +
>  .../sysv/linux/mips/mips32/fpu/libc.abilist   |  1 +
>  .../sysv/linux/mips/mips32/nofpu/libc.abilist |  1 +
>  .../sysv/linux/mips/mips64/n32/libc.abilist   |  1 +
>  .../sysv/linux/mips/mips64/n64/libc.abilist   |  1 +
>  sysdeps/unix/sysv/linux/nios2/libc.abilist    |  1 +
>  sysdeps/unix/sysv/linux/or1k/libc.abilist     |  1 +
>  .../linux/powerpc/powerpc32/fpu/libc.abilist  |  1 +
>  .../powerpc/powerpc32/nofpu/libc.abilist      |  1 +
>  .../linux/powerpc/powerpc64/be/libc.abilist   |  1 +
>  .../linux/powerpc/powerpc64/le/libc.abilist   |  1 +
>  .../unix/sysv/linux/riscv/rv32/libc.abilist   |  1 +
>  .../unix/sysv/linux/riscv/rv64/libc.abilist   |  1 +
>  .../unix/sysv/linux/s390/s390-32/libc.abilist |  1 +
>  .../unix/sysv/linux/s390/s390-64/libc.abilist |  1 +
>  sysdeps/unix/sysv/linux/sh/be/libc.abilist    |  1 +
>  sysdeps/unix/sysv/linux/sh/le/libc.abilist    |  1 +
>  .../sysv/linux/sparc/sparc32/libc.abilist     |  1 +
>  .../sysv/linux/sparc/sparc64/libc.abilist     |  1 +
>  sysdeps/unix/sysv/linux/sys/mount.h           | 26 +++++++++++++++++++
>  sysdeps/unix/sysv/linux/syscalls.list         |  1 +
>  sysdeps/unix/sysv/linux/tst-mount-consts.py   |  2 ++
>  .../unix/sysv/linux/x86_64/64/libc.abilist    |  1 +
>  .../unix/sysv/linux/x86_64/x32/libc.abilist   |  1 +
>  38 files changed, 67 insertions(+), 4 deletions(-)
> 
> diff --git a/NEWS b/NEWS
> index b0a3d7e512..83bb660429 100644
> --- a/NEWS
> +++ b/NEWS
> @@ -41,10 +41,10 @@ Major new features:
>    have adverse impact.  It is incompatible with EDNS0 usage and DNSSEC
>    validation by applications.
>  
> -* On Linux, the fsopen, fsmount, and move_mount functions have been added.
> -  They are part of the new Linux kernel mount APIs that allow applications
> -  to more flexibly configure and operate on filesystem mounts.  The new
> -  mount APIs are specifically designed to work with namespaces.
> +* On Linux, the fsopen, fsmount, move_mount, and fsconfig functions have
> +  been added.  They are part of the new Linux kernel mount APIs that allow
> +  applications to more flexibly configure and operate on filesystem mounts.
> +  The new mount APIs are specifically designed to work with namespaces.
>  
>  Deprecated and removed features, and other changes affecting compatibility:
>  
> diff --git a/sysdeps/unix/sysv/linux/Versions b/sysdeps/unix/sysv/linux/Versions
> index 26d552ba3b..831a366492 100644
> --- a/sysdeps/unix/sysv/linux/Versions
> +++ b/sysdeps/unix/sysv/linux/Versions
> @@ -300,6 +300,7 @@ libc {
>      epoll_pwait2;
>    }
>    GLIBC_2.36 {
> +    fsconfig;
>      fsmount;
>      fsopen;
>      move_mount;
> diff --git a/sysdeps/unix/sysv/linux/aarch64/libc.abilist b/sysdeps/unix/sysv/linux/aarch64/libc.abilist
> index 8dba065b81..0b8699dd94 100644
> --- a/sysdeps/unix/sysv/linux/aarch64/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/aarch64/libc.abilist
> @@ -2616,6 +2616,7 @@ GLIBC_2.35 __memcmpeq F
>  GLIBC_2.35 _dl_find_object F
>  GLIBC_2.35 epoll_pwait2 F
>  GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
> +GLIBC_2.36 fsconfig F
>  GLIBC_2.36 fsmount F
>  GLIBC_2.36 fsopen F
>  GLIBC_2.36 move_mount F
> diff --git a/sysdeps/unix/sysv/linux/alpha/libc.abilist b/sysdeps/unix/sysv/linux/alpha/libc.abilist
> index 08f4750022..dbc552de45 100644
> --- a/sysdeps/unix/sysv/linux/alpha/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/alpha/libc.abilist
> @@ -2713,6 +2713,7 @@ GLIBC_2.35 __memcmpeq F
>  GLIBC_2.35 _dl_find_object F
>  GLIBC_2.35 epoll_pwait2 F
>  GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
> +GLIBC_2.36 fsconfig F
>  GLIBC_2.36 fsmount F
>  GLIBC_2.36 fsopen F
>  GLIBC_2.36 move_mount F
> diff --git a/sysdeps/unix/sysv/linux/arc/libc.abilist b/sysdeps/unix/sysv/linux/arc/libc.abilist
> index 75db763023..b8411014f0 100644
> --- a/sysdeps/unix/sysv/linux/arc/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/arc/libc.abilist
> @@ -2377,6 +2377,7 @@ GLIBC_2.35 __memcmpeq F
>  GLIBC_2.35 _dl_find_object F
>  GLIBC_2.35 epoll_pwait2 F
>  GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
> +GLIBC_2.36 fsconfig F
>  GLIBC_2.36 fsmount F
>  GLIBC_2.36 fsopen F
>  GLIBC_2.36 move_mount F
> diff --git a/sysdeps/unix/sysv/linux/arm/be/libc.abilist b/sysdeps/unix/sysv/linux/arm/be/libc.abilist
> index fa33f317ac..618467399b 100644
> --- a/sysdeps/unix/sysv/linux/arm/be/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/arm/be/libc.abilist
> @@ -496,6 +496,7 @@ GLIBC_2.35 __memcmpeq F
>  GLIBC_2.35 _dl_find_object F
>  GLIBC_2.35 epoll_pwait2 F
>  GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
> +GLIBC_2.36 fsconfig F
>  GLIBC_2.36 fsmount F
>  GLIBC_2.36 fsopen F
>  GLIBC_2.36 move_mount F
> diff --git a/sysdeps/unix/sysv/linux/arm/le/libc.abilist b/sysdeps/unix/sysv/linux/arm/le/libc.abilist
> index dba2e4ce42..3afbd61ba3 100644
> --- a/sysdeps/unix/sysv/linux/arm/le/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/arm/le/libc.abilist
> @@ -493,6 +493,7 @@ GLIBC_2.35 __memcmpeq F
>  GLIBC_2.35 _dl_find_object F
>  GLIBC_2.35 epoll_pwait2 F
>  GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
> +GLIBC_2.36 fsconfig F
>  GLIBC_2.36 fsmount F
>  GLIBC_2.36 fsopen F
>  GLIBC_2.36 move_mount F
> diff --git a/sysdeps/unix/sysv/linux/csky/libc.abilist b/sysdeps/unix/sysv/linux/csky/libc.abilist
> index e6ff921c29..189835a12f 100644
> --- a/sysdeps/unix/sysv/linux/csky/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/csky/libc.abilist
> @@ -2652,6 +2652,7 @@ GLIBC_2.35 __memcmpeq F
>  GLIBC_2.35 _dl_find_object F
>  GLIBC_2.35 epoll_pwait2 F
>  GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
> +GLIBC_2.36 fsconfig F
>  GLIBC_2.36 fsmount F
>  GLIBC_2.36 fsopen F
>  GLIBC_2.36 move_mount F
> diff --git a/sysdeps/unix/sysv/linux/hppa/libc.abilist b/sysdeps/unix/sysv/linux/hppa/libc.abilist
> index 8a40cece83..41d645f3a0 100644
> --- a/sysdeps/unix/sysv/linux/hppa/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/hppa/libc.abilist
> @@ -2601,6 +2601,7 @@ GLIBC_2.35 __memcmpeq F
>  GLIBC_2.35 _dl_find_object F
>  GLIBC_2.35 epoll_pwait2 F
>  GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
> +GLIBC_2.36 fsconfig F
>  GLIBC_2.36 fsmount F
>  GLIBC_2.36 fsopen F
>  GLIBC_2.36 move_mount F
> diff --git a/sysdeps/unix/sysv/linux/i386/libc.abilist b/sysdeps/unix/sysv/linux/i386/libc.abilist
> index a89826049f..c39a33655a 100644
> --- a/sysdeps/unix/sysv/linux/i386/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/i386/libc.abilist
> @@ -2785,6 +2785,7 @@ GLIBC_2.35 __memcmpeq F
>  GLIBC_2.35 _dl_find_object F
>  GLIBC_2.35 epoll_pwait2 F
>  GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
> +GLIBC_2.36 fsconfig F
>  GLIBC_2.36 fsmount F
>  GLIBC_2.36 fsopen F
>  GLIBC_2.36 move_mount F
> diff --git a/sysdeps/unix/sysv/linux/ia64/libc.abilist b/sysdeps/unix/sysv/linux/ia64/libc.abilist
> index d1d96b7469..611b31fc1d 100644
> --- a/sysdeps/unix/sysv/linux/ia64/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/ia64/libc.abilist
> @@ -2551,6 +2551,7 @@ GLIBC_2.35 __memcmpeq F
>  GLIBC_2.35 _dl_find_object F
>  GLIBC_2.35 epoll_pwait2 F
>  GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
> +GLIBC_2.36 fsconfig F
>  GLIBC_2.36 fsmount F
>  GLIBC_2.36 fsopen F
>  GLIBC_2.36 move_mount F
> diff --git a/sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist b/sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist
> index 63a62f267a..8504a94c75 100644
> --- a/sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist
> @@ -497,6 +497,7 @@ GLIBC_2.35 __memcmpeq F
>  GLIBC_2.35 _dl_find_object F
>  GLIBC_2.35 epoll_pwait2 F
>  GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
> +GLIBC_2.36 fsconfig F
>  GLIBC_2.36 fsmount F
>  GLIBC_2.36 fsopen F
>  GLIBC_2.36 move_mount F
> diff --git a/sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist b/sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist
> index f68325f9bc..2cf5ca75d2 100644
> --- a/sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist
> @@ -2728,6 +2728,7 @@ GLIBC_2.35 __memcmpeq F
>  GLIBC_2.35 _dl_find_object F
>  GLIBC_2.35 epoll_pwait2 F
>  GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
> +GLIBC_2.36 fsconfig F
>  GLIBC_2.36 fsmount F
>  GLIBC_2.36 fsopen F
>  GLIBC_2.36 move_mount F
> diff --git a/sysdeps/unix/sysv/linux/microblaze/be/libc.abilist b/sysdeps/unix/sysv/linux/microblaze/be/libc.abilist
> index 247af2075c..667098908d 100644
> --- a/sysdeps/unix/sysv/linux/microblaze/be/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/microblaze/be/libc.abilist
> @@ -2701,6 +2701,7 @@ GLIBC_2.35 __memcmpeq F
>  GLIBC_2.35 _dl_find_object F
>  GLIBC_2.35 epoll_pwait2 F
>  GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
> +GLIBC_2.36 fsconfig F
>  GLIBC_2.36 fsmount F
>  GLIBC_2.36 fsopen F
>  GLIBC_2.36 move_mount F
> diff --git a/sysdeps/unix/sysv/linux/microblaze/le/libc.abilist b/sysdeps/unix/sysv/linux/microblaze/le/libc.abilist
> index b0ac3f9009..a131265c9c 100644
> --- a/sysdeps/unix/sysv/linux/microblaze/le/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/microblaze/le/libc.abilist
> @@ -2698,6 +2698,7 @@ GLIBC_2.35 __memcmpeq F
>  GLIBC_2.35 _dl_find_object F
>  GLIBC_2.35 epoll_pwait2 F
>  GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
> +GLIBC_2.36 fsconfig F
>  GLIBC_2.36 fsmount F
>  GLIBC_2.36 fsopen F
>  GLIBC_2.36 move_mount F
> diff --git a/sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist b/sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist
> index b22cd6bf2f..9a083512f7 100644
> --- a/sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist
> @@ -2693,6 +2693,7 @@ GLIBC_2.35 __memcmpeq F
>  GLIBC_2.35 _dl_find_object F
>  GLIBC_2.35 epoll_pwait2 F
>  GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
> +GLIBC_2.36 fsconfig F
>  GLIBC_2.36 fsmount F
>  GLIBC_2.36 fsopen F
>  GLIBC_2.36 move_mount F
> diff --git a/sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist b/sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist
> index 12fc2cce3e..71b952dc6a 100644
> --- a/sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist
> @@ -2691,6 +2691,7 @@ GLIBC_2.35 __memcmpeq F
>  GLIBC_2.35 _dl_find_object F
>  GLIBC_2.35 epoll_pwait2 F
>  GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
> +GLIBC_2.36 fsconfig F
>  GLIBC_2.36 fsmount F
>  GLIBC_2.36 fsopen F
>  GLIBC_2.36 move_mount F
> diff --git a/sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist b/sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist
> index d3e96dfd43..f824d143fa 100644
> --- a/sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist
> @@ -2699,6 +2699,7 @@ GLIBC_2.35 __memcmpeq F
>  GLIBC_2.35 _dl_find_object F
>  GLIBC_2.35 epoll_pwait2 F
>  GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
> +GLIBC_2.36 fsconfig F
>  GLIBC_2.36 fsmount F
>  GLIBC_2.36 fsopen F
>  GLIBC_2.36 move_mount F
> diff --git a/sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist b/sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist
> index cb58ed4db0..70ff16e752 100644
> --- a/sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist
> @@ -2602,6 +2602,7 @@ GLIBC_2.35 __memcmpeq F
>  GLIBC_2.35 _dl_find_object F
>  GLIBC_2.35 epoll_pwait2 F
>  GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
> +GLIBC_2.36 fsconfig F
>  GLIBC_2.36 fsmount F
>  GLIBC_2.36 fsopen F
>  GLIBC_2.36 move_mount F
> diff --git a/sysdeps/unix/sysv/linux/nios2/libc.abilist b/sysdeps/unix/sysv/linux/nios2/libc.abilist
> index 61ad58a599..e3e30f9f72 100644
> --- a/sysdeps/unix/sysv/linux/nios2/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/nios2/libc.abilist
> @@ -2740,6 +2740,7 @@ GLIBC_2.35 __memcmpeq F
>  GLIBC_2.35 _dl_find_object F
>  GLIBC_2.35 epoll_pwait2 F
>  GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
> +GLIBC_2.36 fsconfig F
>  GLIBC_2.36 fsmount F
>  GLIBC_2.36 fsopen F
>  GLIBC_2.36 move_mount F
> diff --git a/sysdeps/unix/sysv/linux/or1k/libc.abilist b/sysdeps/unix/sysv/linux/or1k/libc.abilist
> index 1260dc4e2e..c2c6c1678f 100644
> --- a/sysdeps/unix/sysv/linux/or1k/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/or1k/libc.abilist
> @@ -2123,6 +2123,7 @@ GLIBC_2.35 wprintf F
>  GLIBC_2.35 write F
>  GLIBC_2.35 writev F
>  GLIBC_2.35 wscanf F
> +GLIBC_2.36 fsconfig F
>  GLIBC_2.36 fsmount F
>  GLIBC_2.36 fsopen F
>  GLIBC_2.36 move_mount F
> diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist b/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist
> index 363939762c..0ca95aa512 100644
> --- a/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist
> @@ -2755,6 +2755,7 @@ GLIBC_2.35 __memcmpeq F
>  GLIBC_2.35 _dl_find_object F
>  GLIBC_2.35 epoll_pwait2 F
>  GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
> +GLIBC_2.36 fsconfig F
>  GLIBC_2.36 fsmount F
>  GLIBC_2.36 fsopen F
>  GLIBC_2.36 move_mount F
> diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist b/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist
> index f512ad8baf..2256356cdb 100644
> --- a/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist
> @@ -2788,6 +2788,7 @@ GLIBC_2.35 __memcmpeq F
>  GLIBC_2.35 _dl_find_object F
>  GLIBC_2.35 epoll_pwait2 F
>  GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
> +GLIBC_2.36 fsconfig F
>  GLIBC_2.36 fsmount F
>  GLIBC_2.36 fsopen F
>  GLIBC_2.36 move_mount F
> diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc64/be/libc.abilist b/sysdeps/unix/sysv/linux/powerpc/powerpc64/be/libc.abilist
> index c9bdc9859c..b27e3b9c7c 100644
> --- a/sysdeps/unix/sysv/linux/powerpc/powerpc64/be/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/powerpc/powerpc64/be/libc.abilist
> @@ -2510,6 +2510,7 @@ GLIBC_2.35 __memcmpeq F
>  GLIBC_2.35 _dl_find_object F
>  GLIBC_2.35 epoll_pwait2 F
>  GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
> +GLIBC_2.36 fsconfig F
>  GLIBC_2.36 fsmount F
>  GLIBC_2.36 fsopen F
>  GLIBC_2.36 move_mount F
> diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc64/le/libc.abilist b/sysdeps/unix/sysv/linux/powerpc/powerpc64/le/libc.abilist
> index f091be30bd..ac3897e8c6 100644
> --- a/sysdeps/unix/sysv/linux/powerpc/powerpc64/le/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/powerpc/powerpc64/le/libc.abilist
> @@ -2812,6 +2812,7 @@ GLIBC_2.35 __memcmpeq F
>  GLIBC_2.35 _dl_find_object F
>  GLIBC_2.35 epoll_pwait2 F
>  GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
> +GLIBC_2.36 fsconfig F
>  GLIBC_2.36 fsmount F
>  GLIBC_2.36 fsopen F
>  GLIBC_2.36 move_mount F
> diff --git a/sysdeps/unix/sysv/linux/riscv/rv32/libc.abilist b/sysdeps/unix/sysv/linux/riscv/rv32/libc.abilist
> index 7ea73f9af8..f7abfd54e3 100644
> --- a/sysdeps/unix/sysv/linux/riscv/rv32/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/riscv/rv32/libc.abilist
> @@ -2379,6 +2379,7 @@ GLIBC_2.35 __memcmpeq F
>  GLIBC_2.35 _dl_find_object F
>  GLIBC_2.35 epoll_pwait2 F
>  GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
> +GLIBC_2.36 fsconfig F
>  GLIBC_2.36 fsmount F
>  GLIBC_2.36 fsopen F
>  GLIBC_2.36 move_mount F
> diff --git a/sysdeps/unix/sysv/linux/riscv/rv64/libc.abilist b/sysdeps/unix/sysv/linux/riscv/rv64/libc.abilist
> index 333fa62714..d4ba82b0a7 100644
> --- a/sysdeps/unix/sysv/linux/riscv/rv64/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/riscv/rv64/libc.abilist
> @@ -2579,6 +2579,7 @@ GLIBC_2.35 __memcmpeq F
>  GLIBC_2.35 _dl_find_object F
>  GLIBC_2.35 epoll_pwait2 F
>  GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
> +GLIBC_2.36 fsconfig F
>  GLIBC_2.36 fsmount F
>  GLIBC_2.36 fsopen F
>  GLIBC_2.36 move_mount F
> diff --git a/sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist b/sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist
> index a867467b12..e15c8f1c50 100644
> --- a/sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist
> @@ -2753,6 +2753,7 @@ GLIBC_2.35 __memcmpeq F
>  GLIBC_2.35 _dl_find_object F
>  GLIBC_2.35 epoll_pwait2 F
>  GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
> +GLIBC_2.36 fsconfig F
>  GLIBC_2.36 fsmount F
>  GLIBC_2.36 fsopen F
>  GLIBC_2.36 move_mount F
> diff --git a/sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist b/sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist
> index dbad5b3163..3f74bf6af0 100644
> --- a/sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist
> @@ -2547,6 +2547,7 @@ GLIBC_2.35 __memcmpeq F
>  GLIBC_2.35 _dl_find_object F
>  GLIBC_2.35 epoll_pwait2 F
>  GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
> +GLIBC_2.36 fsconfig F
>  GLIBC_2.36 fsmount F
>  GLIBC_2.36 fsopen F
>  GLIBC_2.36 move_mount F
> diff --git a/sysdeps/unix/sysv/linux/sh/be/libc.abilist b/sysdeps/unix/sysv/linux/sh/be/libc.abilist
> index 6f755cc173..e9610718d2 100644
> --- a/sysdeps/unix/sysv/linux/sh/be/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/sh/be/libc.abilist
> @@ -2608,6 +2608,7 @@ GLIBC_2.35 __memcmpeq F
>  GLIBC_2.35 _dl_find_object F
>  GLIBC_2.35 epoll_pwait2 F
>  GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
> +GLIBC_2.36 fsconfig F
>  GLIBC_2.36 fsmount F
>  GLIBC_2.36 fsopen F
>  GLIBC_2.36 move_mount F
> diff --git a/sysdeps/unix/sysv/linux/sh/le/libc.abilist b/sysdeps/unix/sysv/linux/sh/le/libc.abilist
> index 77d936aa3c..754c495a6f 100644
> --- a/sysdeps/unix/sysv/linux/sh/le/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/sh/le/libc.abilist
> @@ -2605,6 +2605,7 @@ GLIBC_2.35 __memcmpeq F
>  GLIBC_2.35 _dl_find_object F
>  GLIBC_2.35 epoll_pwait2 F
>  GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
> +GLIBC_2.36 fsconfig F
>  GLIBC_2.36 fsmount F
>  GLIBC_2.36 fsopen F
>  GLIBC_2.36 move_mount F
> diff --git a/sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist b/sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist
> index 09bb4363e1..368a9177e3 100644
> --- a/sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist
> @@ -2748,6 +2748,7 @@ GLIBC_2.35 __memcmpeq F
>  GLIBC_2.35 _dl_find_object F
>  GLIBC_2.35 epoll_pwait2 F
>  GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
> +GLIBC_2.36 fsconfig F
>  GLIBC_2.36 fsmount F
>  GLIBC_2.36 fsopen F
>  GLIBC_2.36 move_mount F
> diff --git a/sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist b/sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist
> index 9df9cb6adb..d644201962 100644
> --- a/sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist
> @@ -2574,6 +2574,7 @@ GLIBC_2.35 __memcmpeq F
>  GLIBC_2.35 _dl_find_object F
>  GLIBC_2.35 epoll_pwait2 F
>  GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
> +GLIBC_2.36 fsconfig F
>  GLIBC_2.36 fsmount F
>  GLIBC_2.36 fsopen F
>  GLIBC_2.36 move_mount F
> diff --git a/sysdeps/unix/sysv/linux/sys/mount.h b/sysdeps/unix/sysv/linux/sys/mount.h
> index 50ec65c7a3..ef2c72f31c 100644
> --- a/sysdeps/unix/sysv/linux/sys/mount.h
> +++ b/sysdeps/unix/sysv/linux/sys/mount.h
> @@ -163,6 +163,27 @@ enum
>  #define MOVE_MOUNT_T_EMPTY_PATH 0x00000040 /* Empty to path permitted */
>  #define MOVE_MOUNT_SET_GROUP    0x00000100 /* Set sharing group instead */
>  
> +/* The type of fsconfig call made.   */
> +enum fsconfig_command
> +{
> +  FSCONFIG_SET_FLAG       = 0,    /* Set parameter, supplying no value */
> +#define FSCONFIG_SET_FLAG FSCONFIG_SET_FLAG
> +  FSCONFIG_SET_STRING     = 1,    /* Set parameter, supplying a string value */
> +#define FSCONFIG_SET_STRING FSCONFIG_SET_STRING
> +  FSCONFIG_SET_BINARY     = 2,    /* Set parameter, supplying a binary blob value */
> +#define FSCONFIG_SET_BINARY FSCONFIG_SET_BINARY
> +  FSCONFIG_SET_PATH       = 3,    /* Set parameter, supplying an object by path */
> +#define FSCONFIG_SET_PATH FSCONFIG_SET_PATH
> +  FSCONFIG_SET_PATH_EMPTY = 4,    /* Set parameter, supplying an object by (empty) path */
> +#define FSCONFIG_SET_PATH_EMPTY FSCONFIG_SET_PATH_EMPTY
> +  FSCONFIG_SET_FD         = 5,    /* Set parameter, supplying an object by fd */
> +#define FSCONFIG_SET_FD FSCONFIG_SET_FD
> +  FSCONFIG_CMD_CREATE     = 6,    /* Invoke superblock creation */
> +#define FSCONFIG_CMD_CREATE FSCONFIG_CMD_CREATE
> +  FSCONFIG_CMD_RECONFIGURE = 7,   /* Invoke superblock reconfiguration */
> +#define FSCONFIG_CMD_RECONFIGURE FSCONFIG_CMD_RECONFIGURE
> +};
> +
>  
>  __BEGIN_DECLS
>  
> @@ -193,6 +214,11 @@ extern int move_mount (int __from_dfd, const char *__from_pathname,
>  		       int __to_dfd, const char *__to_pathname,
>  		       unsigned int flags) __THROW;
>  
> +/* Set parameters and trigger CMD action on the FD context.  KEY, VALUE,
> +   and AUX are used depending ng of the CMD.  */
> +extern int fsconfig (int __fd, unsigned int __cmd, const char *__key,
> +		     const void *__value, int __aux) __THROW;

OK. int, unsigned int, const char *, const void *, int.

> +
>  __END_DECLS
>  
>  #endif /* _SYS_MOUNT_H */
> diff --git a/sysdeps/unix/sysv/linux/syscalls.list b/sysdeps/unix/sysv/linux/syscalls.list
> index 7368210cd1..b2c8df5278 100644
> --- a/sysdeps/unix/sysv/linux/syscalls.list
> +++ b/sysdeps/unix/sysv/linux/syscalls.list
> @@ -12,6 +12,7 @@ epoll_ctl	EXTRA	epoll_ctl	i:iiip	epoll_ctl
>  eventfd		EXTRA	eventfd2	i:ii	eventfd
>  execve		-	execve		i:spp	__execve	execve
>  flock		-	flock		i:ii	__flock		flock
> +fsconfig	EXTRA	fsconfig	i:iUsNi	fsconfig

OK. i:iUsNi

>  fsmount		EXTRA	fsmount		i:iUU	fsmount
>  fsopen		EXTRA	fsopen		i:sU	fsopen
>  get_kernel_syms	EXTRA	get_kernel_syms	i:p	__compat_get_kernel_syms	get_kernel_syms@GLIBC_2.0:GLIBC_2.23
> diff --git a/sysdeps/unix/sysv/linux/tst-mount-consts.py b/sysdeps/unix/sysv/linux/tst-mount-consts.py
> index aa9c02796e..dd4d50f202 100755
> --- a/sysdeps/unix/sysv/linux/tst-mount-consts.py
> +++ b/sysdeps/unix/sysv/linux/tst-mount-consts.py
> @@ -49,6 +49,8 @@ def main():
>                  linux_version_glibc > linux_version_headers,
>                  linux_version_headers > linux_version_glibc)
>  
> +    # Skip testing FS_CONFIG commands since they are only enums in the kernel
> +    # header.
>      status = max(
>          check('FSOPEN_.*'),
>          check('FSMOUNT_.*'),
> diff --git a/sysdeps/unix/sysv/linux/x86_64/64/libc.abilist b/sysdeps/unix/sysv/linux/x86_64/64/libc.abilist
> index 4829450ad0..0ff913610c 100644
> --- a/sysdeps/unix/sysv/linux/x86_64/64/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/x86_64/64/libc.abilist
> @@ -2525,6 +2525,7 @@ GLIBC_2.35 __memcmpeq F
>  GLIBC_2.35 _dl_find_object F
>  GLIBC_2.35 epoll_pwait2 F
>  GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
> +GLIBC_2.36 fsconfig F
>  GLIBC_2.36 fsmount F
>  GLIBC_2.36 fsopen F
>  GLIBC_2.36 move_mount F
> diff --git a/sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist b/sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist
> index caea228bcb..2aa67048ac 100644
> --- a/sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist
> @@ -2631,6 +2631,7 @@ GLIBC_2.35 __memcmpeq F
>  GLIBC_2.35 _dl_find_object F
>  GLIBC_2.35 epoll_pwait2 F
>  GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
> +GLIBC_2.36 fsconfig F
>  GLIBC_2.36 fsmount F
>  GLIBC_2.36 fsopen F
>  GLIBC_2.36 move_mount F


-- 
Cheers,
Carlos.


^ permalink raw reply	[flat|nested] 26+ messages in thread

* Re: [PATCH v7 1/5] linux: Add fsconfig
  2022-07-04 21:36   ` Carlos O'Donell
@ 2022-07-11  8:16     ` Fangrui Song
  2022-07-11 14:47       ` Carlos O'Donell
  0 siblings, 1 reply; 26+ messages in thread
From: Fangrui Song @ 2022-07-11  8:16 UTC (permalink / raw)
  To: Carlos O'Donell; +Cc: Adhemerval Zanella, libc-alpha

On 2022-07-04, Carlos O'Donell via Libc-alpha wrote:
>On 6/24/22 15:59, Adhemerval Zanella wrote:
>> It was added on Linux 5.2 (ecdab150fddb42fe6a739335257949220033b782)
>> as a way to a configure filesystem creation context and trigger
>> actions upon it, to be used in conjunction with fsopen, fspick and
>> fsmount.
>>
>> The fsconfig_command commands are currently only defined as an enum,
>> so they can't be checked on tst-mount-consts.py with current test
>> support.
>
>LGTM. API uses const void * correctly and syscall wrapper signature matches.
>
>Reviewed-by: Carlos O'Donell <carlos@redhat.com>

https://sourceware.org/glibc/wiki/Synchronizing_Headers can be updated that

     #include <sys/mount.h>
     #include <linux/mount.h>

no longer works. This led to a compiler-rt build failure which I am
going to fix in https://reviews.llvm.org/D129471 (llvm-project 15.0 will be branched soon
https://discourse.llvm.org/t/llvm-15-0-0-release-schedule/63495)

Note:

     #include <linux/mount.h>
     #include <sys/mount.h>

doesn't work for a long time

     /usr/include/x86_64-linux-gnu/sys/mount.h:35:3: error: expected identifier before numeric constant
        35 |   MS_RDONLY = 1,                /* Mount read-only.  */
           |   ^~~~~~~~~


^ permalink raw reply	[flat|nested] 26+ messages in thread

* Re: [PATCH v7 1/5] linux: Add fsconfig
  2022-07-11  8:16     ` Fangrui Song
@ 2022-07-11 14:47       ` Carlos O'Donell
  0 siblings, 0 replies; 26+ messages in thread
From: Carlos O'Donell @ 2022-07-11 14:47 UTC (permalink / raw)
  To: Fangrui Song; +Cc: Adhemerval Zanella, libc-alpha

On 7/11/22 04:16, Fangrui Song wrote:
> On 2022-07-04, Carlos O'Donell via Libc-alpha wrote:
>> On 6/24/22 15:59, Adhemerval Zanella wrote:
>>> It was added on Linux 5.2 (ecdab150fddb42fe6a739335257949220033b782)
>>> as a way to a configure filesystem creation context and trigger
>>> actions upon it, to be used in conjunction with fsopen, fspick and
>>> fsmount.
>>>
>>> The fsconfig_command commands are currently only defined as an enum,
>>> so they can't be checked on tst-mount-consts.py with current test
>>> support.
>>
>> LGTM. API uses const void * correctly and syscall wrapper signature matches.
>>
>> Reviewed-by: Carlos O'Donell <carlos@redhat.com>
> 
> https://sourceware.org/glibc/wiki/Synchronizing_Headers can be updated that
> 
>     #include <sys/mount.h>
>     #include <linux/mount.h>
> 
> no longer works. This led to a compiler-rt build failure which I am
> going to fix in https://reviews.llvm.org/D129471 (llvm-project 15.0 will be branched soon
> https://discourse.llvm.org/t/llvm-15-0-0-release-schedule/63495)
> 
> Note:
> 
>     #include <linux/mount.h>
>     #include <sys/mount.h>
> 
> doesn't work for a long time
> 
>     /usr/include/x86_64-linux-gnu/sys/mount.h:35:3: error: expected identifier before numeric constant
>        35 |   MS_RDONLY = 1,                /* Mount read-only.  */
>           |   ^~~~~~~~~
> 

I added the known conflict to the wiki. Thanks.

-- 
Cheers,
Carlos.


^ permalink raw reply	[flat|nested] 26+ messages in thread

* [PATCH v7 2/5] linux: Add fspick
  2022-06-24 19:59 [PATCH v7 0/5] linux: Add new syscalls Adhemerval Zanella
  2022-06-24 19:59 ` [PATCH v7 1/5] linux: Add fsconfig Adhemerval Zanella
@ 2022-06-24 19:59 ` Adhemerval Zanella
  2022-07-04 21:39   ` Carlos O'Donell
  2022-06-24 19:59 ` [PATCH v7 3/5] linux: Add open_tree Adhemerval Zanella
                   ` (2 subsequent siblings)
  4 siblings, 1 reply; 26+ messages in thread
From: Adhemerval Zanella @ 2022-06-24 19:59 UTC (permalink / raw)
  To: libc-alpha, Carlos O'Donell

It was added on Linux 5.2 (cf3cba4a429be43e5527a3f78859b1bfd9ebc5fb)
that can be used to pick an existing mountpoint into an filesystem
context which can thereafter be used to reconfigure a superblock
with fsconfig syscall.
---
 NEWS                                                 |  9 +++++----
 sysdeps/unix/sysv/linux/Versions                     |  1 +
 sysdeps/unix/sysv/linux/aarch64/libc.abilist         |  1 +
 sysdeps/unix/sysv/linux/alpha/libc.abilist           |  1 +
 sysdeps/unix/sysv/linux/arc/libc.abilist             |  1 +
 sysdeps/unix/sysv/linux/arm/be/libc.abilist          |  1 +
 sysdeps/unix/sysv/linux/arm/le/libc.abilist          |  1 +
 sysdeps/unix/sysv/linux/csky/libc.abilist            |  1 +
 sysdeps/unix/sysv/linux/hppa/libc.abilist            |  1 +
 sysdeps/unix/sysv/linux/i386/libc.abilist            |  1 +
 sysdeps/unix/sysv/linux/ia64/libc.abilist            |  1 +
 sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist   |  1 +
 sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist     |  1 +
 sysdeps/unix/sysv/linux/microblaze/be/libc.abilist   |  1 +
 sysdeps/unix/sysv/linux/microblaze/le/libc.abilist   |  1 +
 sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist |  1 +
 .../unix/sysv/linux/mips/mips32/nofpu/libc.abilist   |  1 +
 sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist |  1 +
 sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist |  1 +
 sysdeps/unix/sysv/linux/nios2/libc.abilist           |  1 +
 sysdeps/unix/sysv/linux/or1k/libc.abilist            |  1 +
 .../sysv/linux/powerpc/powerpc32/fpu/libc.abilist    |  1 +
 .../sysv/linux/powerpc/powerpc32/nofpu/libc.abilist  |  1 +
 .../sysv/linux/powerpc/powerpc64/be/libc.abilist     |  1 +
 .../sysv/linux/powerpc/powerpc64/le/libc.abilist     |  1 +
 sysdeps/unix/sysv/linux/riscv/rv32/libc.abilist      |  1 +
 sysdeps/unix/sysv/linux/riscv/rv64/libc.abilist      |  1 +
 sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist    |  1 +
 sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist    |  1 +
 sysdeps/unix/sysv/linux/sh/be/libc.abilist           |  1 +
 sysdeps/unix/sysv/linux/sh/le/libc.abilist           |  1 +
 sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist   |  1 +
 sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist   |  1 +
 sysdeps/unix/sysv/linux/sys/mount.h                  | 12 ++++++++++++
 sysdeps/unix/sysv/linux/syscalls.list                |  1 +
 sysdeps/unix/sysv/linux/x86_64/64/libc.abilist       |  1 +
 sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist      |  1 +
 37 files changed, 52 insertions(+), 4 deletions(-)

diff --git a/NEWS b/NEWS
index 83bb660429..9557b15f4a 100644
--- a/NEWS
+++ b/NEWS
@@ -41,10 +41,11 @@ Major new features:
   have adverse impact.  It is incompatible with EDNS0 usage and DNSSEC
   validation by applications.
 
-* On Linux, the fsopen, fsmount, move_mount, and fsconfig functions have
-  been added.  They are part of the new Linux kernel mount APIs that allow
-  applications to more flexibly configure and operate on filesystem mounts.
-  The new mount APIs are specifically designed to work with namespaces.
+* On Linux, the fsopen, fsmount, move_mount, fsconfig, and fspick functions
+  have been added.  They are part of the new Linux kernel mount APIs that
+  allow applications to more flexibly configure and operate on filesystem
+  mounts.  The new mount APIs are specifically designed to work with
+  namespaces.
 
 Deprecated and removed features, and other changes affecting compatibility:
 
diff --git a/sysdeps/unix/sysv/linux/Versions b/sysdeps/unix/sysv/linux/Versions
index 831a366492..7bc5861513 100644
--- a/sysdeps/unix/sysv/linux/Versions
+++ b/sysdeps/unix/sysv/linux/Versions
@@ -303,6 +303,7 @@ libc {
     fsconfig;
     fsmount;
     fsopen;
+    fspick;
     move_mount;
     pidfd_open;
     pidfd_getfd;
diff --git a/sysdeps/unix/sysv/linux/aarch64/libc.abilist b/sysdeps/unix/sysv/linux/aarch64/libc.abilist
index 0b8699dd94..4eaffedf7f 100644
--- a/sysdeps/unix/sysv/linux/aarch64/libc.abilist
+++ b/sysdeps/unix/sysv/linux/aarch64/libc.abilist
@@ -2619,6 +2619,7 @@ GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
 GLIBC_2.36 fsconfig F
 GLIBC_2.36 fsmount F
 GLIBC_2.36 fsopen F
+GLIBC_2.36 fspick F
 GLIBC_2.36 move_mount F
 GLIBC_2.36 pidfd_getfd F
 GLIBC_2.36 pidfd_open F
diff --git a/sysdeps/unix/sysv/linux/alpha/libc.abilist b/sysdeps/unix/sysv/linux/alpha/libc.abilist
index dbc552de45..6acce2a762 100644
--- a/sysdeps/unix/sysv/linux/alpha/libc.abilist
+++ b/sysdeps/unix/sysv/linux/alpha/libc.abilist
@@ -2716,6 +2716,7 @@ GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
 GLIBC_2.36 fsconfig F
 GLIBC_2.36 fsmount F
 GLIBC_2.36 fsopen F
+GLIBC_2.36 fspick F
 GLIBC_2.36 move_mount F
 GLIBC_2.36 pidfd_getfd F
 GLIBC_2.36 pidfd_open F
diff --git a/sysdeps/unix/sysv/linux/arc/libc.abilist b/sysdeps/unix/sysv/linux/arc/libc.abilist
index b8411014f0..9d254a3bc3 100644
--- a/sysdeps/unix/sysv/linux/arc/libc.abilist
+++ b/sysdeps/unix/sysv/linux/arc/libc.abilist
@@ -2380,6 +2380,7 @@ GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
 GLIBC_2.36 fsconfig F
 GLIBC_2.36 fsmount F
 GLIBC_2.36 fsopen F
+GLIBC_2.36 fspick F
 GLIBC_2.36 move_mount F
 GLIBC_2.36 pidfd_getfd F
 GLIBC_2.36 pidfd_open F
diff --git a/sysdeps/unix/sysv/linux/arm/be/libc.abilist b/sysdeps/unix/sysv/linux/arm/be/libc.abilist
index 618467399b..95026bc448 100644
--- a/sysdeps/unix/sysv/linux/arm/be/libc.abilist
+++ b/sysdeps/unix/sysv/linux/arm/be/libc.abilist
@@ -499,6 +499,7 @@ GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
 GLIBC_2.36 fsconfig F
 GLIBC_2.36 fsmount F
 GLIBC_2.36 fsopen F
+GLIBC_2.36 fspick F
 GLIBC_2.36 move_mount F
 GLIBC_2.36 pidfd_getfd F
 GLIBC_2.36 pidfd_open F
diff --git a/sysdeps/unix/sysv/linux/arm/le/libc.abilist b/sysdeps/unix/sysv/linux/arm/le/libc.abilist
index 3afbd61ba3..096246378c 100644
--- a/sysdeps/unix/sysv/linux/arm/le/libc.abilist
+++ b/sysdeps/unix/sysv/linux/arm/le/libc.abilist
@@ -496,6 +496,7 @@ GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
 GLIBC_2.36 fsconfig F
 GLIBC_2.36 fsmount F
 GLIBC_2.36 fsopen F
+GLIBC_2.36 fspick F
 GLIBC_2.36 move_mount F
 GLIBC_2.36 pidfd_getfd F
 GLIBC_2.36 pidfd_open F
diff --git a/sysdeps/unix/sysv/linux/csky/libc.abilist b/sysdeps/unix/sysv/linux/csky/libc.abilist
index 189835a12f..166008f970 100644
--- a/sysdeps/unix/sysv/linux/csky/libc.abilist
+++ b/sysdeps/unix/sysv/linux/csky/libc.abilist
@@ -2655,6 +2655,7 @@ GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
 GLIBC_2.36 fsconfig F
 GLIBC_2.36 fsmount F
 GLIBC_2.36 fsopen F
+GLIBC_2.36 fspick F
 GLIBC_2.36 move_mount F
 GLIBC_2.36 pidfd_getfd F
 GLIBC_2.36 pidfd_open F
diff --git a/sysdeps/unix/sysv/linux/hppa/libc.abilist b/sysdeps/unix/sysv/linux/hppa/libc.abilist
index 41d645f3a0..155cc6ed96 100644
--- a/sysdeps/unix/sysv/linux/hppa/libc.abilist
+++ b/sysdeps/unix/sysv/linux/hppa/libc.abilist
@@ -2604,6 +2604,7 @@ GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
 GLIBC_2.36 fsconfig F
 GLIBC_2.36 fsmount F
 GLIBC_2.36 fsopen F
+GLIBC_2.36 fspick F
 GLIBC_2.36 move_mount F
 GLIBC_2.36 pidfd_getfd F
 GLIBC_2.36 pidfd_open F
diff --git a/sysdeps/unix/sysv/linux/i386/libc.abilist b/sysdeps/unix/sysv/linux/i386/libc.abilist
index c39a33655a..67f7e36556 100644
--- a/sysdeps/unix/sysv/linux/i386/libc.abilist
+++ b/sysdeps/unix/sysv/linux/i386/libc.abilist
@@ -2788,6 +2788,7 @@ GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
 GLIBC_2.36 fsconfig F
 GLIBC_2.36 fsmount F
 GLIBC_2.36 fsopen F
+GLIBC_2.36 fspick F
 GLIBC_2.36 move_mount F
 GLIBC_2.36 pidfd_getfd F
 GLIBC_2.36 pidfd_open F
diff --git a/sysdeps/unix/sysv/linux/ia64/libc.abilist b/sysdeps/unix/sysv/linux/ia64/libc.abilist
index 611b31fc1d..dbb75aa50f 100644
--- a/sysdeps/unix/sysv/linux/ia64/libc.abilist
+++ b/sysdeps/unix/sysv/linux/ia64/libc.abilist
@@ -2554,6 +2554,7 @@ GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
 GLIBC_2.36 fsconfig F
 GLIBC_2.36 fsmount F
 GLIBC_2.36 fsopen F
+GLIBC_2.36 fspick F
 GLIBC_2.36 move_mount F
 GLIBC_2.36 pidfd_getfd F
 GLIBC_2.36 pidfd_open F
diff --git a/sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist b/sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist
index 8504a94c75..6d72cedf89 100644
--- a/sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist
+++ b/sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist
@@ -500,6 +500,7 @@ GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
 GLIBC_2.36 fsconfig F
 GLIBC_2.36 fsmount F
 GLIBC_2.36 fsopen F
+GLIBC_2.36 fspick F
 GLIBC_2.36 move_mount F
 GLIBC_2.36 pidfd_getfd F
 GLIBC_2.36 pidfd_open F
diff --git a/sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist b/sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist
index 2cf5ca75d2..7899efa0e0 100644
--- a/sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist
+++ b/sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist
@@ -2731,6 +2731,7 @@ GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
 GLIBC_2.36 fsconfig F
 GLIBC_2.36 fsmount F
 GLIBC_2.36 fsopen F
+GLIBC_2.36 fspick F
 GLIBC_2.36 move_mount F
 GLIBC_2.36 pidfd_getfd F
 GLIBC_2.36 pidfd_open F
diff --git a/sysdeps/unix/sysv/linux/microblaze/be/libc.abilist b/sysdeps/unix/sysv/linux/microblaze/be/libc.abilist
index 667098908d..162a85a8a8 100644
--- a/sysdeps/unix/sysv/linux/microblaze/be/libc.abilist
+++ b/sysdeps/unix/sysv/linux/microblaze/be/libc.abilist
@@ -2704,6 +2704,7 @@ GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
 GLIBC_2.36 fsconfig F
 GLIBC_2.36 fsmount F
 GLIBC_2.36 fsopen F
+GLIBC_2.36 fspick F
 GLIBC_2.36 move_mount F
 GLIBC_2.36 pidfd_getfd F
 GLIBC_2.36 pidfd_open F
diff --git a/sysdeps/unix/sysv/linux/microblaze/le/libc.abilist b/sysdeps/unix/sysv/linux/microblaze/le/libc.abilist
index a131265c9c..a5e28ec2ae 100644
--- a/sysdeps/unix/sysv/linux/microblaze/le/libc.abilist
+++ b/sysdeps/unix/sysv/linux/microblaze/le/libc.abilist
@@ -2701,6 +2701,7 @@ GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
 GLIBC_2.36 fsconfig F
 GLIBC_2.36 fsmount F
 GLIBC_2.36 fsopen F
+GLIBC_2.36 fspick F
 GLIBC_2.36 move_mount F
 GLIBC_2.36 pidfd_getfd F
 GLIBC_2.36 pidfd_open F
diff --git a/sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist b/sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist
index 9a083512f7..33627f4b67 100644
--- a/sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist
+++ b/sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist
@@ -2696,6 +2696,7 @@ GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
 GLIBC_2.36 fsconfig F
 GLIBC_2.36 fsmount F
 GLIBC_2.36 fsopen F
+GLIBC_2.36 fspick F
 GLIBC_2.36 move_mount F
 GLIBC_2.36 pidfd_getfd F
 GLIBC_2.36 pidfd_open F
diff --git a/sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist b/sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist
index 71b952dc6a..333547fc56 100644
--- a/sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist
+++ b/sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist
@@ -2694,6 +2694,7 @@ GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
 GLIBC_2.36 fsconfig F
 GLIBC_2.36 fsmount F
 GLIBC_2.36 fsopen F
+GLIBC_2.36 fspick F
 GLIBC_2.36 move_mount F
 GLIBC_2.36 pidfd_getfd F
 GLIBC_2.36 pidfd_open F
diff --git a/sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist b/sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist
index f824d143fa..a46a1aefe7 100644
--- a/sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist
+++ b/sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist
@@ -2702,6 +2702,7 @@ GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
 GLIBC_2.36 fsconfig F
 GLIBC_2.36 fsmount F
 GLIBC_2.36 fsopen F
+GLIBC_2.36 fspick F
 GLIBC_2.36 move_mount F
 GLIBC_2.36 pidfd_getfd F
 GLIBC_2.36 pidfd_open F
diff --git a/sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist b/sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist
index 70ff16e752..b9b88321a7 100644
--- a/sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist
+++ b/sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist
@@ -2605,6 +2605,7 @@ GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
 GLIBC_2.36 fsconfig F
 GLIBC_2.36 fsmount F
 GLIBC_2.36 fsopen F
+GLIBC_2.36 fspick F
 GLIBC_2.36 move_mount F
 GLIBC_2.36 pidfd_getfd F
 GLIBC_2.36 pidfd_open F
diff --git a/sysdeps/unix/sysv/linux/nios2/libc.abilist b/sysdeps/unix/sysv/linux/nios2/libc.abilist
index e3e30f9f72..0f2293d6a1 100644
--- a/sysdeps/unix/sysv/linux/nios2/libc.abilist
+++ b/sysdeps/unix/sysv/linux/nios2/libc.abilist
@@ -2743,6 +2743,7 @@ GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
 GLIBC_2.36 fsconfig F
 GLIBC_2.36 fsmount F
 GLIBC_2.36 fsopen F
+GLIBC_2.36 fspick F
 GLIBC_2.36 move_mount F
 GLIBC_2.36 pidfd_getfd F
 GLIBC_2.36 pidfd_open F
diff --git a/sysdeps/unix/sysv/linux/or1k/libc.abilist b/sysdeps/unix/sysv/linux/or1k/libc.abilist
index c2c6c1678f..812c05804e 100644
--- a/sysdeps/unix/sysv/linux/or1k/libc.abilist
+++ b/sysdeps/unix/sysv/linux/or1k/libc.abilist
@@ -2126,6 +2126,7 @@ GLIBC_2.35 wscanf F
 GLIBC_2.36 fsconfig F
 GLIBC_2.36 fsmount F
 GLIBC_2.36 fsopen F
+GLIBC_2.36 fspick F
 GLIBC_2.36 move_mount F
 GLIBC_2.36 pidfd_getfd F
 GLIBC_2.36 pidfd_open F
diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist b/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist
index 0ca95aa512..568e5ab91f 100644
--- a/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist
+++ b/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist
@@ -2758,6 +2758,7 @@ GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
 GLIBC_2.36 fsconfig F
 GLIBC_2.36 fsmount F
 GLIBC_2.36 fsopen F
+GLIBC_2.36 fspick F
 GLIBC_2.36 move_mount F
 GLIBC_2.36 pidfd_getfd F
 GLIBC_2.36 pidfd_open F
diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist b/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist
index 2256356cdb..bf5bab018d 100644
--- a/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist
+++ b/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist
@@ -2791,6 +2791,7 @@ GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
 GLIBC_2.36 fsconfig F
 GLIBC_2.36 fsmount F
 GLIBC_2.36 fsopen F
+GLIBC_2.36 fspick F
 GLIBC_2.36 move_mount F
 GLIBC_2.36 pidfd_getfd F
 GLIBC_2.36 pidfd_open F
diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc64/be/libc.abilist b/sysdeps/unix/sysv/linux/powerpc/powerpc64/be/libc.abilist
index b27e3b9c7c..cffbb88886 100644
--- a/sysdeps/unix/sysv/linux/powerpc/powerpc64/be/libc.abilist
+++ b/sysdeps/unix/sysv/linux/powerpc/powerpc64/be/libc.abilist
@@ -2513,6 +2513,7 @@ GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
 GLIBC_2.36 fsconfig F
 GLIBC_2.36 fsmount F
 GLIBC_2.36 fsopen F
+GLIBC_2.36 fspick F
 GLIBC_2.36 move_mount F
 GLIBC_2.36 pidfd_getfd F
 GLIBC_2.36 pidfd_open F
diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc64/le/libc.abilist b/sysdeps/unix/sysv/linux/powerpc/powerpc64/le/libc.abilist
index ac3897e8c6..8dac584380 100644
--- a/sysdeps/unix/sysv/linux/powerpc/powerpc64/le/libc.abilist
+++ b/sysdeps/unix/sysv/linux/powerpc/powerpc64/le/libc.abilist
@@ -2815,6 +2815,7 @@ GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
 GLIBC_2.36 fsconfig F
 GLIBC_2.36 fsmount F
 GLIBC_2.36 fsopen F
+GLIBC_2.36 fspick F
 GLIBC_2.36 move_mount F
 GLIBC_2.36 pidfd_getfd F
 GLIBC_2.36 pidfd_open F
diff --git a/sysdeps/unix/sysv/linux/riscv/rv32/libc.abilist b/sysdeps/unix/sysv/linux/riscv/rv32/libc.abilist
index f7abfd54e3..431a9a30a1 100644
--- a/sysdeps/unix/sysv/linux/riscv/rv32/libc.abilist
+++ b/sysdeps/unix/sysv/linux/riscv/rv32/libc.abilist
@@ -2382,6 +2382,7 @@ GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
 GLIBC_2.36 fsconfig F
 GLIBC_2.36 fsmount F
 GLIBC_2.36 fsopen F
+GLIBC_2.36 fspick F
 GLIBC_2.36 move_mount F
 GLIBC_2.36 pidfd_getfd F
 GLIBC_2.36 pidfd_open F
diff --git a/sysdeps/unix/sysv/linux/riscv/rv64/libc.abilist b/sysdeps/unix/sysv/linux/riscv/rv64/libc.abilist
index d4ba82b0a7..ec86269bf7 100644
--- a/sysdeps/unix/sysv/linux/riscv/rv64/libc.abilist
+++ b/sysdeps/unix/sysv/linux/riscv/rv64/libc.abilist
@@ -2582,6 +2582,7 @@ GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
 GLIBC_2.36 fsconfig F
 GLIBC_2.36 fsmount F
 GLIBC_2.36 fsopen F
+GLIBC_2.36 fspick F
 GLIBC_2.36 move_mount F
 GLIBC_2.36 pidfd_getfd F
 GLIBC_2.36 pidfd_open F
diff --git a/sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist b/sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist
index e15c8f1c50..fe437d8e61 100644
--- a/sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist
+++ b/sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist
@@ -2756,6 +2756,7 @@ GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
 GLIBC_2.36 fsconfig F
 GLIBC_2.36 fsmount F
 GLIBC_2.36 fsopen F
+GLIBC_2.36 fspick F
 GLIBC_2.36 move_mount F
 GLIBC_2.36 pidfd_getfd F
 GLIBC_2.36 pidfd_open F
diff --git a/sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist b/sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist
index 3f74bf6af0..e802e8da7f 100644
--- a/sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist
+++ b/sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist
@@ -2550,6 +2550,7 @@ GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
 GLIBC_2.36 fsconfig F
 GLIBC_2.36 fsmount F
 GLIBC_2.36 fsopen F
+GLIBC_2.36 fspick F
 GLIBC_2.36 move_mount F
 GLIBC_2.36 pidfd_getfd F
 GLIBC_2.36 pidfd_open F
diff --git a/sysdeps/unix/sysv/linux/sh/be/libc.abilist b/sysdeps/unix/sysv/linux/sh/be/libc.abilist
index e9610718d2..c0a7196f5a 100644
--- a/sysdeps/unix/sysv/linux/sh/be/libc.abilist
+++ b/sysdeps/unix/sysv/linux/sh/be/libc.abilist
@@ -2611,6 +2611,7 @@ GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
 GLIBC_2.36 fsconfig F
 GLIBC_2.36 fsmount F
 GLIBC_2.36 fsopen F
+GLIBC_2.36 fspick F
 GLIBC_2.36 move_mount F
 GLIBC_2.36 pidfd_getfd F
 GLIBC_2.36 pidfd_open F
diff --git a/sysdeps/unix/sysv/linux/sh/le/libc.abilist b/sysdeps/unix/sysv/linux/sh/le/libc.abilist
index 754c495a6f..45589bac28 100644
--- a/sysdeps/unix/sysv/linux/sh/le/libc.abilist
+++ b/sysdeps/unix/sysv/linux/sh/le/libc.abilist
@@ -2608,6 +2608,7 @@ GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
 GLIBC_2.36 fsconfig F
 GLIBC_2.36 fsmount F
 GLIBC_2.36 fsopen F
+GLIBC_2.36 fspick F
 GLIBC_2.36 move_mount F
 GLIBC_2.36 pidfd_getfd F
 GLIBC_2.36 pidfd_open F
diff --git a/sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist b/sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist
index 368a9177e3..9b84bc0143 100644
--- a/sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist
+++ b/sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist
@@ -2751,6 +2751,7 @@ GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
 GLIBC_2.36 fsconfig F
 GLIBC_2.36 fsmount F
 GLIBC_2.36 fsopen F
+GLIBC_2.36 fspick F
 GLIBC_2.36 move_mount F
 GLIBC_2.36 pidfd_getfd F
 GLIBC_2.36 pidfd_open F
diff --git a/sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist b/sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist
index d644201962..362a22903a 100644
--- a/sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist
+++ b/sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist
@@ -2577,6 +2577,7 @@ GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
 GLIBC_2.36 fsconfig F
 GLIBC_2.36 fsmount F
 GLIBC_2.36 fsopen F
+GLIBC_2.36 fspick F
 GLIBC_2.36 move_mount F
 GLIBC_2.36 pidfd_getfd F
 GLIBC_2.36 pidfd_open F
diff --git a/sysdeps/unix/sysv/linux/sys/mount.h b/sysdeps/unix/sysv/linux/sys/mount.h
index ef2c72f31c..e0880f75a5 100644
--- a/sysdeps/unix/sysv/linux/sys/mount.h
+++ b/sysdeps/unix/sysv/linux/sys/mount.h
@@ -163,6 +163,14 @@ enum
 #define MOVE_MOUNT_T_EMPTY_PATH 0x00000040 /* Empty to path permitted */
 #define MOVE_MOUNT_SET_GROUP    0x00000100 /* Set sharing group instead */
 
+
+/* fspick flags.  */
+#define FSPICK_CLOEXEC          0x00000001
+#define FSPICK_SYMLINK_NOFOLLOW 0x00000002
+#define FSPICK_NO_AUTOMOUNT     0x00000004
+#define FSPICK_EMPTY_PATH       0x00000008
+
+
 /* The type of fsconfig call made.   */
 enum fsconfig_command
 {
@@ -219,6 +227,10 @@ extern int move_mount (int __from_dfd, const char *__from_pathname,
 extern int fsconfig (int __fd, unsigned int __cmd, const char *__key,
 		     const void *__value, int __aux) __THROW;
 
+/* Equivalent of fopen for an existing mount point.  */
+extern int fspick (int __dfd, const char *__path, unsigned int __flags)
+  __THROW;
+
 __END_DECLS
 
 #endif /* _SYS_MOUNT_H */
diff --git a/sysdeps/unix/sysv/linux/syscalls.list b/sysdeps/unix/sysv/linux/syscalls.list
index b2c8df5278..38ab457340 100644
--- a/sysdeps/unix/sysv/linux/syscalls.list
+++ b/sysdeps/unix/sysv/linux/syscalls.list
@@ -15,6 +15,7 @@ flock		-	flock		i:ii	__flock		flock
 fsconfig	EXTRA	fsconfig	i:iUsNi	fsconfig
 fsmount		EXTRA	fsmount		i:iUU	fsmount
 fsopen		EXTRA	fsopen		i:sU	fsopen
+fspick		EXTRA	fspick		i:isU	fspick
 get_kernel_syms	EXTRA	get_kernel_syms	i:p	__compat_get_kernel_syms	get_kernel_syms@GLIBC_2.0:GLIBC_2.23
 getpid          -       getpid          Ei:     __getpid        getpid
 getegid		-	getegid		Ei:	__getegid	getegid
diff --git a/sysdeps/unix/sysv/linux/x86_64/64/libc.abilist b/sysdeps/unix/sysv/linux/x86_64/64/libc.abilist
index 0ff913610c..93dab79cdc 100644
--- a/sysdeps/unix/sysv/linux/x86_64/64/libc.abilist
+++ b/sysdeps/unix/sysv/linux/x86_64/64/libc.abilist
@@ -2528,6 +2528,7 @@ GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
 GLIBC_2.36 fsconfig F
 GLIBC_2.36 fsmount F
 GLIBC_2.36 fsopen F
+GLIBC_2.36 fspick F
 GLIBC_2.36 move_mount F
 GLIBC_2.36 pidfd_getfd F
 GLIBC_2.36 pidfd_open F
diff --git a/sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist b/sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist
index 2aa67048ac..24daa92e90 100644
--- a/sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist
+++ b/sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist
@@ -2634,6 +2634,7 @@ GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
 GLIBC_2.36 fsconfig F
 GLIBC_2.36 fsmount F
 GLIBC_2.36 fsopen F
+GLIBC_2.36 fspick F
 GLIBC_2.36 move_mount F
 GLIBC_2.36 pidfd_getfd F
 GLIBC_2.36 pidfd_open F
-- 
2.34.1


^ permalink raw reply	[flat|nested] 26+ messages in thread

* Re: [PATCH v7 2/5] linux: Add fspick
  2022-06-24 19:59 ` [PATCH v7 2/5] linux: Add fspick Adhemerval Zanella
@ 2022-07-04 21:39   ` Carlos O'Donell
  0 siblings, 0 replies; 26+ messages in thread
From: Carlos O'Donell @ 2022-07-04 21:39 UTC (permalink / raw)
  To: Adhemerval Zanella, libc-alpha

On 6/24/22 15:59, Adhemerval Zanella wrote:
> It was added on Linux 5.2 (cf3cba4a429be43e5527a3f78859b1bfd9ebc5fb)
> that can be used to pick an existing mountpoint into an filesystem
> context which can thereafter be used to reconfigure a superblock
> with fsconfig syscall.

LGTM. API signature matches the kernel.

Reviewed-by: Carlos O'Donell <carlos@redhat.com>

> ---
>  NEWS                                                 |  9 +++++----
>  sysdeps/unix/sysv/linux/Versions                     |  1 +
>  sysdeps/unix/sysv/linux/aarch64/libc.abilist         |  1 +
>  sysdeps/unix/sysv/linux/alpha/libc.abilist           |  1 +
>  sysdeps/unix/sysv/linux/arc/libc.abilist             |  1 +
>  sysdeps/unix/sysv/linux/arm/be/libc.abilist          |  1 +
>  sysdeps/unix/sysv/linux/arm/le/libc.abilist          |  1 +
>  sysdeps/unix/sysv/linux/csky/libc.abilist            |  1 +
>  sysdeps/unix/sysv/linux/hppa/libc.abilist            |  1 +
>  sysdeps/unix/sysv/linux/i386/libc.abilist            |  1 +
>  sysdeps/unix/sysv/linux/ia64/libc.abilist            |  1 +
>  sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist   |  1 +
>  sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist     |  1 +
>  sysdeps/unix/sysv/linux/microblaze/be/libc.abilist   |  1 +
>  sysdeps/unix/sysv/linux/microblaze/le/libc.abilist   |  1 +
>  sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist |  1 +
>  .../unix/sysv/linux/mips/mips32/nofpu/libc.abilist   |  1 +
>  sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist |  1 +
>  sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist |  1 +
>  sysdeps/unix/sysv/linux/nios2/libc.abilist           |  1 +
>  sysdeps/unix/sysv/linux/or1k/libc.abilist            |  1 +
>  .../sysv/linux/powerpc/powerpc32/fpu/libc.abilist    |  1 +
>  .../sysv/linux/powerpc/powerpc32/nofpu/libc.abilist  |  1 +
>  .../sysv/linux/powerpc/powerpc64/be/libc.abilist     |  1 +
>  .../sysv/linux/powerpc/powerpc64/le/libc.abilist     |  1 +
>  sysdeps/unix/sysv/linux/riscv/rv32/libc.abilist      |  1 +
>  sysdeps/unix/sysv/linux/riscv/rv64/libc.abilist      |  1 +
>  sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist    |  1 +
>  sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist    |  1 +
>  sysdeps/unix/sysv/linux/sh/be/libc.abilist           |  1 +
>  sysdeps/unix/sysv/linux/sh/le/libc.abilist           |  1 +
>  sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist   |  1 +
>  sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist   |  1 +
>  sysdeps/unix/sysv/linux/sys/mount.h                  | 12 ++++++++++++
>  sysdeps/unix/sysv/linux/syscalls.list                |  1 +
>  sysdeps/unix/sysv/linux/x86_64/64/libc.abilist       |  1 +
>  sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist      |  1 +
>  37 files changed, 52 insertions(+), 4 deletions(-)
> 
> diff --git a/NEWS b/NEWS
> index 83bb660429..9557b15f4a 100644
> --- a/NEWS
> +++ b/NEWS
> @@ -41,10 +41,11 @@ Major new features:
>    have adverse impact.  It is incompatible with EDNS0 usage and DNSSEC
>    validation by applications.
>  
> -* On Linux, the fsopen, fsmount, move_mount, and fsconfig functions have
> -  been added.  They are part of the new Linux kernel mount APIs that allow
> -  applications to more flexibly configure and operate on filesystem mounts.
> -  The new mount APIs are specifically designed to work with namespaces.
> +* On Linux, the fsopen, fsmount, move_mount, fsconfig, and fspick functions
> +  have been added.  They are part of the new Linux kernel mount APIs that
> +  allow applications to more flexibly configure and operate on filesystem
> +  mounts.  The new mount APIs are specifically designed to work with
> +  namespaces.

OK.

>  
>  Deprecated and removed features, and other changes affecting compatibility:
>  
> diff --git a/sysdeps/unix/sysv/linux/Versions b/sysdeps/unix/sysv/linux/Versions
> index 831a366492..7bc5861513 100644
> --- a/sysdeps/unix/sysv/linux/Versions
> +++ b/sysdeps/unix/sysv/linux/Versions
> @@ -303,6 +303,7 @@ libc {
>      fsconfig;
>      fsmount;
>      fsopen;
> +    fspick;

OK.

>      move_mount;
>      pidfd_open;
>      pidfd_getfd;
> diff --git a/sysdeps/unix/sysv/linux/aarch64/libc.abilist b/sysdeps/unix/sysv/linux/aarch64/libc.abilist
> index 0b8699dd94..4eaffedf7f 100644
> --- a/sysdeps/unix/sysv/linux/aarch64/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/aarch64/libc.abilist
> @@ -2619,6 +2619,7 @@ GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
>  GLIBC_2.36 fsconfig F
>  GLIBC_2.36 fsmount F
>  GLIBC_2.36 fsopen F
> +GLIBC_2.36 fspick F
>  GLIBC_2.36 move_mount F
>  GLIBC_2.36 pidfd_getfd F
>  GLIBC_2.36 pidfd_open F
> diff --git a/sysdeps/unix/sysv/linux/alpha/libc.abilist b/sysdeps/unix/sysv/linux/alpha/libc.abilist
> index dbc552de45..6acce2a762 100644
> --- a/sysdeps/unix/sysv/linux/alpha/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/alpha/libc.abilist
> @@ -2716,6 +2716,7 @@ GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
>  GLIBC_2.36 fsconfig F
>  GLIBC_2.36 fsmount F
>  GLIBC_2.36 fsopen F
> +GLIBC_2.36 fspick F
>  GLIBC_2.36 move_mount F
>  GLIBC_2.36 pidfd_getfd F
>  GLIBC_2.36 pidfd_open F
> diff --git a/sysdeps/unix/sysv/linux/arc/libc.abilist b/sysdeps/unix/sysv/linux/arc/libc.abilist
> index b8411014f0..9d254a3bc3 100644
> --- a/sysdeps/unix/sysv/linux/arc/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/arc/libc.abilist
> @@ -2380,6 +2380,7 @@ GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
>  GLIBC_2.36 fsconfig F
>  GLIBC_2.36 fsmount F
>  GLIBC_2.36 fsopen F
> +GLIBC_2.36 fspick F
>  GLIBC_2.36 move_mount F
>  GLIBC_2.36 pidfd_getfd F
>  GLIBC_2.36 pidfd_open F
> diff --git a/sysdeps/unix/sysv/linux/arm/be/libc.abilist b/sysdeps/unix/sysv/linux/arm/be/libc.abilist
> index 618467399b..95026bc448 100644
> --- a/sysdeps/unix/sysv/linux/arm/be/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/arm/be/libc.abilist
> @@ -499,6 +499,7 @@ GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
>  GLIBC_2.36 fsconfig F
>  GLIBC_2.36 fsmount F
>  GLIBC_2.36 fsopen F
> +GLIBC_2.36 fspick F
>  GLIBC_2.36 move_mount F
>  GLIBC_2.36 pidfd_getfd F
>  GLIBC_2.36 pidfd_open F
> diff --git a/sysdeps/unix/sysv/linux/arm/le/libc.abilist b/sysdeps/unix/sysv/linux/arm/le/libc.abilist
> index 3afbd61ba3..096246378c 100644
> --- a/sysdeps/unix/sysv/linux/arm/le/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/arm/le/libc.abilist
> @@ -496,6 +496,7 @@ GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
>  GLIBC_2.36 fsconfig F
>  GLIBC_2.36 fsmount F
>  GLIBC_2.36 fsopen F
> +GLIBC_2.36 fspick F
>  GLIBC_2.36 move_mount F
>  GLIBC_2.36 pidfd_getfd F
>  GLIBC_2.36 pidfd_open F
> diff --git a/sysdeps/unix/sysv/linux/csky/libc.abilist b/sysdeps/unix/sysv/linux/csky/libc.abilist
> index 189835a12f..166008f970 100644
> --- a/sysdeps/unix/sysv/linux/csky/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/csky/libc.abilist
> @@ -2655,6 +2655,7 @@ GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
>  GLIBC_2.36 fsconfig F
>  GLIBC_2.36 fsmount F
>  GLIBC_2.36 fsopen F
> +GLIBC_2.36 fspick F
>  GLIBC_2.36 move_mount F
>  GLIBC_2.36 pidfd_getfd F
>  GLIBC_2.36 pidfd_open F
> diff --git a/sysdeps/unix/sysv/linux/hppa/libc.abilist b/sysdeps/unix/sysv/linux/hppa/libc.abilist
> index 41d645f3a0..155cc6ed96 100644
> --- a/sysdeps/unix/sysv/linux/hppa/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/hppa/libc.abilist
> @@ -2604,6 +2604,7 @@ GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
>  GLIBC_2.36 fsconfig F
>  GLIBC_2.36 fsmount F
>  GLIBC_2.36 fsopen F
> +GLIBC_2.36 fspick F
>  GLIBC_2.36 move_mount F
>  GLIBC_2.36 pidfd_getfd F
>  GLIBC_2.36 pidfd_open F
> diff --git a/sysdeps/unix/sysv/linux/i386/libc.abilist b/sysdeps/unix/sysv/linux/i386/libc.abilist
> index c39a33655a..67f7e36556 100644
> --- a/sysdeps/unix/sysv/linux/i386/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/i386/libc.abilist
> @@ -2788,6 +2788,7 @@ GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
>  GLIBC_2.36 fsconfig F
>  GLIBC_2.36 fsmount F
>  GLIBC_2.36 fsopen F
> +GLIBC_2.36 fspick F
>  GLIBC_2.36 move_mount F
>  GLIBC_2.36 pidfd_getfd F
>  GLIBC_2.36 pidfd_open F
> diff --git a/sysdeps/unix/sysv/linux/ia64/libc.abilist b/sysdeps/unix/sysv/linux/ia64/libc.abilist
> index 611b31fc1d..dbb75aa50f 100644
> --- a/sysdeps/unix/sysv/linux/ia64/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/ia64/libc.abilist
> @@ -2554,6 +2554,7 @@ GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
>  GLIBC_2.36 fsconfig F
>  GLIBC_2.36 fsmount F
>  GLIBC_2.36 fsopen F
> +GLIBC_2.36 fspick F
>  GLIBC_2.36 move_mount F
>  GLIBC_2.36 pidfd_getfd F
>  GLIBC_2.36 pidfd_open F
> diff --git a/sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist b/sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist
> index 8504a94c75..6d72cedf89 100644
> --- a/sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist
> @@ -500,6 +500,7 @@ GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
>  GLIBC_2.36 fsconfig F
>  GLIBC_2.36 fsmount F
>  GLIBC_2.36 fsopen F
> +GLIBC_2.36 fspick F
>  GLIBC_2.36 move_mount F
>  GLIBC_2.36 pidfd_getfd F
>  GLIBC_2.36 pidfd_open F
> diff --git a/sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist b/sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist
> index 2cf5ca75d2..7899efa0e0 100644
> --- a/sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist
> @@ -2731,6 +2731,7 @@ GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
>  GLIBC_2.36 fsconfig F
>  GLIBC_2.36 fsmount F
>  GLIBC_2.36 fsopen F
> +GLIBC_2.36 fspick F
>  GLIBC_2.36 move_mount F
>  GLIBC_2.36 pidfd_getfd F
>  GLIBC_2.36 pidfd_open F
> diff --git a/sysdeps/unix/sysv/linux/microblaze/be/libc.abilist b/sysdeps/unix/sysv/linux/microblaze/be/libc.abilist
> index 667098908d..162a85a8a8 100644
> --- a/sysdeps/unix/sysv/linux/microblaze/be/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/microblaze/be/libc.abilist
> @@ -2704,6 +2704,7 @@ GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
>  GLIBC_2.36 fsconfig F
>  GLIBC_2.36 fsmount F
>  GLIBC_2.36 fsopen F
> +GLIBC_2.36 fspick F
>  GLIBC_2.36 move_mount F
>  GLIBC_2.36 pidfd_getfd F
>  GLIBC_2.36 pidfd_open F
> diff --git a/sysdeps/unix/sysv/linux/microblaze/le/libc.abilist b/sysdeps/unix/sysv/linux/microblaze/le/libc.abilist
> index a131265c9c..a5e28ec2ae 100644
> --- a/sysdeps/unix/sysv/linux/microblaze/le/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/microblaze/le/libc.abilist
> @@ -2701,6 +2701,7 @@ GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
>  GLIBC_2.36 fsconfig F
>  GLIBC_2.36 fsmount F
>  GLIBC_2.36 fsopen F
> +GLIBC_2.36 fspick F
>  GLIBC_2.36 move_mount F
>  GLIBC_2.36 pidfd_getfd F
>  GLIBC_2.36 pidfd_open F
> diff --git a/sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist b/sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist
> index 9a083512f7..33627f4b67 100644
> --- a/sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist
> @@ -2696,6 +2696,7 @@ GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
>  GLIBC_2.36 fsconfig F
>  GLIBC_2.36 fsmount F
>  GLIBC_2.36 fsopen F
> +GLIBC_2.36 fspick F
>  GLIBC_2.36 move_mount F
>  GLIBC_2.36 pidfd_getfd F
>  GLIBC_2.36 pidfd_open F
> diff --git a/sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist b/sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist
> index 71b952dc6a..333547fc56 100644
> --- a/sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist
> @@ -2694,6 +2694,7 @@ GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
>  GLIBC_2.36 fsconfig F
>  GLIBC_2.36 fsmount F
>  GLIBC_2.36 fsopen F
> +GLIBC_2.36 fspick F
>  GLIBC_2.36 move_mount F
>  GLIBC_2.36 pidfd_getfd F
>  GLIBC_2.36 pidfd_open F
> diff --git a/sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist b/sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist
> index f824d143fa..a46a1aefe7 100644
> --- a/sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist
> @@ -2702,6 +2702,7 @@ GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
>  GLIBC_2.36 fsconfig F
>  GLIBC_2.36 fsmount F
>  GLIBC_2.36 fsopen F
> +GLIBC_2.36 fspick F
>  GLIBC_2.36 move_mount F
>  GLIBC_2.36 pidfd_getfd F
>  GLIBC_2.36 pidfd_open F
> diff --git a/sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist b/sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist
> index 70ff16e752..b9b88321a7 100644
> --- a/sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist
> @@ -2605,6 +2605,7 @@ GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
>  GLIBC_2.36 fsconfig F
>  GLIBC_2.36 fsmount F
>  GLIBC_2.36 fsopen F
> +GLIBC_2.36 fspick F
>  GLIBC_2.36 move_mount F
>  GLIBC_2.36 pidfd_getfd F
>  GLIBC_2.36 pidfd_open F
> diff --git a/sysdeps/unix/sysv/linux/nios2/libc.abilist b/sysdeps/unix/sysv/linux/nios2/libc.abilist
> index e3e30f9f72..0f2293d6a1 100644
> --- a/sysdeps/unix/sysv/linux/nios2/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/nios2/libc.abilist
> @@ -2743,6 +2743,7 @@ GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
>  GLIBC_2.36 fsconfig F
>  GLIBC_2.36 fsmount F
>  GLIBC_2.36 fsopen F
> +GLIBC_2.36 fspick F
>  GLIBC_2.36 move_mount F
>  GLIBC_2.36 pidfd_getfd F
>  GLIBC_2.36 pidfd_open F
> diff --git a/sysdeps/unix/sysv/linux/or1k/libc.abilist b/sysdeps/unix/sysv/linux/or1k/libc.abilist
> index c2c6c1678f..812c05804e 100644
> --- a/sysdeps/unix/sysv/linux/or1k/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/or1k/libc.abilist
> @@ -2126,6 +2126,7 @@ GLIBC_2.35 wscanf F
>  GLIBC_2.36 fsconfig F
>  GLIBC_2.36 fsmount F
>  GLIBC_2.36 fsopen F
> +GLIBC_2.36 fspick F
>  GLIBC_2.36 move_mount F
>  GLIBC_2.36 pidfd_getfd F
>  GLIBC_2.36 pidfd_open F
> diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist b/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist
> index 0ca95aa512..568e5ab91f 100644
> --- a/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist
> @@ -2758,6 +2758,7 @@ GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
>  GLIBC_2.36 fsconfig F
>  GLIBC_2.36 fsmount F
>  GLIBC_2.36 fsopen F
> +GLIBC_2.36 fspick F
>  GLIBC_2.36 move_mount F
>  GLIBC_2.36 pidfd_getfd F
>  GLIBC_2.36 pidfd_open F
> diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist b/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist
> index 2256356cdb..bf5bab018d 100644
> --- a/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist
> @@ -2791,6 +2791,7 @@ GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
>  GLIBC_2.36 fsconfig F
>  GLIBC_2.36 fsmount F
>  GLIBC_2.36 fsopen F
> +GLIBC_2.36 fspick F
>  GLIBC_2.36 move_mount F
>  GLIBC_2.36 pidfd_getfd F
>  GLIBC_2.36 pidfd_open F
> diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc64/be/libc.abilist b/sysdeps/unix/sysv/linux/powerpc/powerpc64/be/libc.abilist
> index b27e3b9c7c..cffbb88886 100644
> --- a/sysdeps/unix/sysv/linux/powerpc/powerpc64/be/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/powerpc/powerpc64/be/libc.abilist
> @@ -2513,6 +2513,7 @@ GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
>  GLIBC_2.36 fsconfig F
>  GLIBC_2.36 fsmount F
>  GLIBC_2.36 fsopen F
> +GLIBC_2.36 fspick F
>  GLIBC_2.36 move_mount F
>  GLIBC_2.36 pidfd_getfd F
>  GLIBC_2.36 pidfd_open F
> diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc64/le/libc.abilist b/sysdeps/unix/sysv/linux/powerpc/powerpc64/le/libc.abilist
> index ac3897e8c6..8dac584380 100644
> --- a/sysdeps/unix/sysv/linux/powerpc/powerpc64/le/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/powerpc/powerpc64/le/libc.abilist
> @@ -2815,6 +2815,7 @@ GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
>  GLIBC_2.36 fsconfig F
>  GLIBC_2.36 fsmount F
>  GLIBC_2.36 fsopen F
> +GLIBC_2.36 fspick F
>  GLIBC_2.36 move_mount F
>  GLIBC_2.36 pidfd_getfd F
>  GLIBC_2.36 pidfd_open F
> diff --git a/sysdeps/unix/sysv/linux/riscv/rv32/libc.abilist b/sysdeps/unix/sysv/linux/riscv/rv32/libc.abilist
> index f7abfd54e3..431a9a30a1 100644
> --- a/sysdeps/unix/sysv/linux/riscv/rv32/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/riscv/rv32/libc.abilist
> @@ -2382,6 +2382,7 @@ GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
>  GLIBC_2.36 fsconfig F
>  GLIBC_2.36 fsmount F
>  GLIBC_2.36 fsopen F
> +GLIBC_2.36 fspick F
>  GLIBC_2.36 move_mount F
>  GLIBC_2.36 pidfd_getfd F
>  GLIBC_2.36 pidfd_open F
> diff --git a/sysdeps/unix/sysv/linux/riscv/rv64/libc.abilist b/sysdeps/unix/sysv/linux/riscv/rv64/libc.abilist
> index d4ba82b0a7..ec86269bf7 100644
> --- a/sysdeps/unix/sysv/linux/riscv/rv64/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/riscv/rv64/libc.abilist
> @@ -2582,6 +2582,7 @@ GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
>  GLIBC_2.36 fsconfig F
>  GLIBC_2.36 fsmount F
>  GLIBC_2.36 fsopen F
> +GLIBC_2.36 fspick F
>  GLIBC_2.36 move_mount F
>  GLIBC_2.36 pidfd_getfd F
>  GLIBC_2.36 pidfd_open F
> diff --git a/sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist b/sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist
> index e15c8f1c50..fe437d8e61 100644
> --- a/sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist
> @@ -2756,6 +2756,7 @@ GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
>  GLIBC_2.36 fsconfig F
>  GLIBC_2.36 fsmount F
>  GLIBC_2.36 fsopen F
> +GLIBC_2.36 fspick F
>  GLIBC_2.36 move_mount F
>  GLIBC_2.36 pidfd_getfd F
>  GLIBC_2.36 pidfd_open F
> diff --git a/sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist b/sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist
> index 3f74bf6af0..e802e8da7f 100644
> --- a/sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist
> @@ -2550,6 +2550,7 @@ GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
>  GLIBC_2.36 fsconfig F
>  GLIBC_2.36 fsmount F
>  GLIBC_2.36 fsopen F
> +GLIBC_2.36 fspick F
>  GLIBC_2.36 move_mount F
>  GLIBC_2.36 pidfd_getfd F
>  GLIBC_2.36 pidfd_open F
> diff --git a/sysdeps/unix/sysv/linux/sh/be/libc.abilist b/sysdeps/unix/sysv/linux/sh/be/libc.abilist
> index e9610718d2..c0a7196f5a 100644
> --- a/sysdeps/unix/sysv/linux/sh/be/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/sh/be/libc.abilist
> @@ -2611,6 +2611,7 @@ GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
>  GLIBC_2.36 fsconfig F
>  GLIBC_2.36 fsmount F
>  GLIBC_2.36 fsopen F
> +GLIBC_2.36 fspick F
>  GLIBC_2.36 move_mount F
>  GLIBC_2.36 pidfd_getfd F
>  GLIBC_2.36 pidfd_open F
> diff --git a/sysdeps/unix/sysv/linux/sh/le/libc.abilist b/sysdeps/unix/sysv/linux/sh/le/libc.abilist
> index 754c495a6f..45589bac28 100644
> --- a/sysdeps/unix/sysv/linux/sh/le/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/sh/le/libc.abilist
> @@ -2608,6 +2608,7 @@ GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
>  GLIBC_2.36 fsconfig F
>  GLIBC_2.36 fsmount F
>  GLIBC_2.36 fsopen F
> +GLIBC_2.36 fspick F
>  GLIBC_2.36 move_mount F
>  GLIBC_2.36 pidfd_getfd F
>  GLIBC_2.36 pidfd_open F
> diff --git a/sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist b/sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist
> index 368a9177e3..9b84bc0143 100644
> --- a/sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist
> @@ -2751,6 +2751,7 @@ GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
>  GLIBC_2.36 fsconfig F
>  GLIBC_2.36 fsmount F
>  GLIBC_2.36 fsopen F
> +GLIBC_2.36 fspick F
>  GLIBC_2.36 move_mount F
>  GLIBC_2.36 pidfd_getfd F
>  GLIBC_2.36 pidfd_open F
> diff --git a/sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist b/sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist
> index d644201962..362a22903a 100644
> --- a/sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist
> @@ -2577,6 +2577,7 @@ GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
>  GLIBC_2.36 fsconfig F
>  GLIBC_2.36 fsmount F
>  GLIBC_2.36 fsopen F
> +GLIBC_2.36 fspick F
>  GLIBC_2.36 move_mount F
>  GLIBC_2.36 pidfd_getfd F
>  GLIBC_2.36 pidfd_open F
> diff --git a/sysdeps/unix/sysv/linux/sys/mount.h b/sysdeps/unix/sysv/linux/sys/mount.h
> index ef2c72f31c..e0880f75a5 100644
> --- a/sysdeps/unix/sysv/linux/sys/mount.h
> +++ b/sysdeps/unix/sysv/linux/sys/mount.h
> @@ -163,6 +163,14 @@ enum
>  #define MOVE_MOUNT_T_EMPTY_PATH 0x00000040 /* Empty to path permitted */
>  #define MOVE_MOUNT_SET_GROUP    0x00000100 /* Set sharing group instead */
>  
> +
> +/* fspick flags.  */
> +#define FSPICK_CLOEXEC          0x00000001
> +#define FSPICK_SYMLINK_NOFOLLOW 0x00000002
> +#define FSPICK_NO_AUTOMOUNT     0x00000004
> +#define FSPICK_EMPTY_PATH       0x00000008

OK. FSPICK_* 1/2/4/8. Matches kernel.

> +
> +
>  /* The type of fsconfig call made.   */
>  enum fsconfig_command
>  {
> @@ -219,6 +227,10 @@ extern int move_mount (int __from_dfd, const char *__from_pathname,
>  extern int fsconfig (int __fd, unsigned int __cmd, const char *__key,
>  		     const void *__value, int __aux) __THROW;
>  
> +/* Equivalent of fopen for an existing mount point.  */
> +extern int fspick (int __dfd, const char *__path, unsigned int __flags)
> +  __THROW;
> +

OK. int, const char *, unsigned int. Matches kernel.

>  __END_DECLS
>  
>  #endif /* _SYS_MOUNT_H */
> diff --git a/sysdeps/unix/sysv/linux/syscalls.list b/sysdeps/unix/sysv/linux/syscalls.list
> index b2c8df5278..38ab457340 100644
> --- a/sysdeps/unix/sysv/linux/syscalls.list
> +++ b/sysdeps/unix/sysv/linux/syscalls.list
> @@ -15,6 +15,7 @@ flock		-	flock		i:ii	__flock		flock
>  fsconfig	EXTRA	fsconfig	i:iUsNi	fsconfig
>  fsmount		EXTRA	fsmount		i:iUU	fsmount
>  fsopen		EXTRA	fsopen		i:sU	fsopen
> +fspick		EXTRA	fspick		i:isU	fspick

OK. i:isU. Matches kernel API.

>  get_kernel_syms	EXTRA	get_kernel_syms	i:p	__compat_get_kernel_syms	get_kernel_syms@GLIBC_2.0:GLIBC_2.23
>  getpid          -       getpid          Ei:     __getpid        getpid
>  getegid		-	getegid		Ei:	__getegid	getegid
> diff --git a/sysdeps/unix/sysv/linux/x86_64/64/libc.abilist b/sysdeps/unix/sysv/linux/x86_64/64/libc.abilist
> index 0ff913610c..93dab79cdc 100644
> --- a/sysdeps/unix/sysv/linux/x86_64/64/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/x86_64/64/libc.abilist
> @@ -2528,6 +2528,7 @@ GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
>  GLIBC_2.36 fsconfig F
>  GLIBC_2.36 fsmount F
>  GLIBC_2.36 fsopen F
> +GLIBC_2.36 fspick F
>  GLIBC_2.36 move_mount F
>  GLIBC_2.36 pidfd_getfd F
>  GLIBC_2.36 pidfd_open F
> diff --git a/sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist b/sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist
> index 2aa67048ac..24daa92e90 100644
> --- a/sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist
> @@ -2634,6 +2634,7 @@ GLIBC_2.35 posix_spawn_file_actions_addtcsetpgrp_np F
>  GLIBC_2.36 fsconfig F
>  GLIBC_2.36 fsmount F
>  GLIBC_2.36 fsopen F
> +GLIBC_2.36 fspick F
>  GLIBC_2.36 move_mount F
>  GLIBC_2.36 pidfd_getfd F
>  GLIBC_2.36 pidfd_open F


-- 
Cheers,
Carlos.


^ permalink raw reply	[flat|nested] 26+ messages in thread

* [PATCH v7 3/5] linux: Add open_tree
  2022-06-24 19:59 [PATCH v7 0/5] linux: Add new syscalls Adhemerval Zanella
  2022-06-24 19:59 ` [PATCH v7 1/5] linux: Add fsconfig Adhemerval Zanella
  2022-06-24 19:59 ` [PATCH v7 2/5] linux: Add fspick Adhemerval Zanella
@ 2022-06-24 19:59 ` Adhemerval Zanella
  2022-07-04 21:42   ` Carlos O'Donell
  2022-06-24 19:59 ` [PATCH v7 4/5] linux: Add tst-mount to check for Linux new mount API Adhemerval Zanella
  2022-06-24 19:59 ` [PATCH v7 5/5] linux: Add mount_setattr Adhemerval Zanella
  4 siblings, 1 reply; 26+ messages in thread
From: Adhemerval Zanella @ 2022-06-24 19:59 UTC (permalink / raw)
  To: libc-alpha, Carlos O'Donell

It was added on Linux 5.2 (a07b20004793d8926f78d63eb5980559f7813404)
to return a O_PATH-opened file descriptor to an existing mountpoint.
---
 NEWS                                                   | 10 +++++-----
 sysdeps/unix/sysv/linux/Versions                       |  1 +
 sysdeps/unix/sysv/linux/aarch64/libc.abilist           |  1 +
 sysdeps/unix/sysv/linux/alpha/libc.abilist             |  1 +
 sysdeps/unix/sysv/linux/arc/libc.abilist               |  1 +
 sysdeps/unix/sysv/linux/arm/be/libc.abilist            |  1 +
 sysdeps/unix/sysv/linux/arm/le/libc.abilist            |  1 +
 sysdeps/unix/sysv/linux/csky/libc.abilist              |  1 +
 sysdeps/unix/sysv/linux/hppa/libc.abilist              |  1 +
 sysdeps/unix/sysv/linux/i386/libc.abilist              |  1 +
 sysdeps/unix/sysv/linux/ia64/libc.abilist              |  1 +
 sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist     |  1 +
 sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist       |  1 +
 sysdeps/unix/sysv/linux/microblaze/be/libc.abilist     |  1 +
 sysdeps/unix/sysv/linux/microblaze/le/libc.abilist     |  1 +
 sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist   |  1 +
 sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist |  1 +
 sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist   |  1 +
 sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist   |  1 +
 sysdeps/unix/sysv/linux/nios2/libc.abilist             |  1 +
 sysdeps/unix/sysv/linux/or1k/libc.abilist              |  1 +
 .../unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist |  1 +
 .../sysv/linux/powerpc/powerpc32/nofpu/libc.abilist    |  1 +
 .../unix/sysv/linux/powerpc/powerpc64/be/libc.abilist  |  1 +
 .../unix/sysv/linux/powerpc/powerpc64/le/libc.abilist  |  1 +
 sysdeps/unix/sysv/linux/riscv/rv32/libc.abilist        |  1 +
 sysdeps/unix/sysv/linux/riscv/rv64/libc.abilist        |  1 +
 sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist      |  1 +
 sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist      |  1 +
 sysdeps/unix/sysv/linux/sh/be/libc.abilist             |  1 +
 sysdeps/unix/sysv/linux/sh/le/libc.abilist             |  1 +
 sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist     |  1 +
 sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist     |  1 +
 sysdeps/unix/sysv/linux/sys/mount.h                    |  9 +++++++++
 sysdeps/unix/sysv/linux/syscalls.list                  |  1 +
 sysdeps/unix/sysv/linux/tst-mount-consts.py            |  3 ++-
 sysdeps/unix/sysv/linux/x86_64/64/libc.abilist         |  1 +
 sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist        |  1 +
 38 files changed, 51 insertions(+), 6 deletions(-)

diff --git a/NEWS b/NEWS
index 9557b15f4a..f52718aa77 100644
--- a/NEWS
+++ b/NEWS
@@ -41,11 +41,11 @@ Major new features:
   have adverse impact.  It is incompatible with EDNS0 usage and DNSSEC
   validation by applications.
 
-* On Linux, the fsopen, fsmount, move_mount, fsconfig, and fspick functions
-  have been added.  They are part of the new Linux kernel mount APIs that
-  allow applications to more flexibly configure and operate on filesystem
-  mounts.  The new mount APIs are specifically designed to work with
-  namespaces.
+* On Linux, the fsopen, fsmount, move_mount, fsconfig, fspick, and open_tree
+  functions have been added.  They are part of the new Linux kernel mount
+  APIs that allow applications to more flexibly configure and operate on
+  filesystem mounts.  The new mount APIs are specifically designed to work
+  with namespaces.
 
 Deprecated and removed features, and other changes affecting compatibility:
 
diff --git a/sysdeps/unix/sysv/linux/Versions b/sysdeps/unix/sysv/linux/Versions
index 7bc5861513..b70530ef40 100644
--- a/sysdeps/unix/sysv/linux/Versions
+++ b/sysdeps/unix/sysv/linux/Versions
@@ -305,6 +305,7 @@ libc {
     fsopen;
     fspick;
     move_mount;
+    open_tree;
     pidfd_open;
     pidfd_getfd;
     pidfd_send_signal;
diff --git a/sysdeps/unix/sysv/linux/aarch64/libc.abilist b/sysdeps/unix/sysv/linux/aarch64/libc.abilist
index 4eaffedf7f..2a666d8135 100644
--- a/sysdeps/unix/sysv/linux/aarch64/libc.abilist
+++ b/sysdeps/unix/sysv/linux/aarch64/libc.abilist
@@ -2621,6 +2621,7 @@ GLIBC_2.36 fsmount F
 GLIBC_2.36 fsopen F
 GLIBC_2.36 fspick F
 GLIBC_2.36 move_mount F
+GLIBC_2.36 open_tree F
 GLIBC_2.36 pidfd_getfd F
 GLIBC_2.36 pidfd_open F
 GLIBC_2.36 pidfd_send_signal F
diff --git a/sysdeps/unix/sysv/linux/alpha/libc.abilist b/sysdeps/unix/sysv/linux/alpha/libc.abilist
index 6acce2a762..41bd7c1959 100644
--- a/sysdeps/unix/sysv/linux/alpha/libc.abilist
+++ b/sysdeps/unix/sysv/linux/alpha/libc.abilist
@@ -2718,6 +2718,7 @@ GLIBC_2.36 fsmount F
 GLIBC_2.36 fsopen F
 GLIBC_2.36 fspick F
 GLIBC_2.36 move_mount F
+GLIBC_2.36 open_tree F
 GLIBC_2.36 pidfd_getfd F
 GLIBC_2.36 pidfd_open F
 GLIBC_2.36 pidfd_send_signal F
diff --git a/sysdeps/unix/sysv/linux/arc/libc.abilist b/sysdeps/unix/sysv/linux/arc/libc.abilist
index 9d254a3bc3..198fdab2f7 100644
--- a/sysdeps/unix/sysv/linux/arc/libc.abilist
+++ b/sysdeps/unix/sysv/linux/arc/libc.abilist
@@ -2382,6 +2382,7 @@ GLIBC_2.36 fsmount F
 GLIBC_2.36 fsopen F
 GLIBC_2.36 fspick F
 GLIBC_2.36 move_mount F
+GLIBC_2.36 open_tree F
 GLIBC_2.36 pidfd_getfd F
 GLIBC_2.36 pidfd_open F
 GLIBC_2.36 pidfd_send_signal F
diff --git a/sysdeps/unix/sysv/linux/arm/be/libc.abilist b/sysdeps/unix/sysv/linux/arm/be/libc.abilist
index 95026bc448..6fd4e75df2 100644
--- a/sysdeps/unix/sysv/linux/arm/be/libc.abilist
+++ b/sysdeps/unix/sysv/linux/arm/be/libc.abilist
@@ -501,6 +501,7 @@ GLIBC_2.36 fsmount F
 GLIBC_2.36 fsopen F
 GLIBC_2.36 fspick F
 GLIBC_2.36 move_mount F
+GLIBC_2.36 open_tree F
 GLIBC_2.36 pidfd_getfd F
 GLIBC_2.36 pidfd_open F
 GLIBC_2.36 pidfd_send_signal F
diff --git a/sysdeps/unix/sysv/linux/arm/le/libc.abilist b/sysdeps/unix/sysv/linux/arm/le/libc.abilist
index 096246378c..3ec572b50f 100644
--- a/sysdeps/unix/sysv/linux/arm/le/libc.abilist
+++ b/sysdeps/unix/sysv/linux/arm/le/libc.abilist
@@ -498,6 +498,7 @@ GLIBC_2.36 fsmount F
 GLIBC_2.36 fsopen F
 GLIBC_2.36 fspick F
 GLIBC_2.36 move_mount F
+GLIBC_2.36 open_tree F
 GLIBC_2.36 pidfd_getfd F
 GLIBC_2.36 pidfd_open F
 GLIBC_2.36 pidfd_send_signal F
diff --git a/sysdeps/unix/sysv/linux/csky/libc.abilist b/sysdeps/unix/sysv/linux/csky/libc.abilist
index 166008f970..94f3deb3e5 100644
--- a/sysdeps/unix/sysv/linux/csky/libc.abilist
+++ b/sysdeps/unix/sysv/linux/csky/libc.abilist
@@ -2657,6 +2657,7 @@ GLIBC_2.36 fsmount F
 GLIBC_2.36 fsopen F
 GLIBC_2.36 fspick F
 GLIBC_2.36 move_mount F
+GLIBC_2.36 open_tree F
 GLIBC_2.36 pidfd_getfd F
 GLIBC_2.36 pidfd_open F
 GLIBC_2.36 pidfd_send_signal F
diff --git a/sysdeps/unix/sysv/linux/hppa/libc.abilist b/sysdeps/unix/sysv/linux/hppa/libc.abilist
index 155cc6ed96..a7deaf3e26 100644
--- a/sysdeps/unix/sysv/linux/hppa/libc.abilist
+++ b/sysdeps/unix/sysv/linux/hppa/libc.abilist
@@ -2606,6 +2606,7 @@ GLIBC_2.36 fsmount F
 GLIBC_2.36 fsopen F
 GLIBC_2.36 fspick F
 GLIBC_2.36 move_mount F
+GLIBC_2.36 open_tree F
 GLIBC_2.36 pidfd_getfd F
 GLIBC_2.36 pidfd_open F
 GLIBC_2.36 pidfd_send_signal F
diff --git a/sysdeps/unix/sysv/linux/i386/libc.abilist b/sysdeps/unix/sysv/linux/i386/libc.abilist
index 67f7e36556..5f1a1bc4d0 100644
--- a/sysdeps/unix/sysv/linux/i386/libc.abilist
+++ b/sysdeps/unix/sysv/linux/i386/libc.abilist
@@ -2790,6 +2790,7 @@ GLIBC_2.36 fsmount F
 GLIBC_2.36 fsopen F
 GLIBC_2.36 fspick F
 GLIBC_2.36 move_mount F
+GLIBC_2.36 open_tree F
 GLIBC_2.36 pidfd_getfd F
 GLIBC_2.36 pidfd_open F
 GLIBC_2.36 pidfd_send_signal F
diff --git a/sysdeps/unix/sysv/linux/ia64/libc.abilist b/sysdeps/unix/sysv/linux/ia64/libc.abilist
index dbb75aa50f..1af8a55836 100644
--- a/sysdeps/unix/sysv/linux/ia64/libc.abilist
+++ b/sysdeps/unix/sysv/linux/ia64/libc.abilist
@@ -2556,6 +2556,7 @@ GLIBC_2.36 fsmount F
 GLIBC_2.36 fsopen F
 GLIBC_2.36 fspick F
 GLIBC_2.36 move_mount F
+GLIBC_2.36 open_tree F
 GLIBC_2.36 pidfd_getfd F
 GLIBC_2.36 pidfd_open F
 GLIBC_2.36 pidfd_send_signal F
diff --git a/sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist b/sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist
index 6d72cedf89..ad3a4b4008 100644
--- a/sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist
+++ b/sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist
@@ -502,6 +502,7 @@ GLIBC_2.36 fsmount F
 GLIBC_2.36 fsopen F
 GLIBC_2.36 fspick F
 GLIBC_2.36 move_mount F
+GLIBC_2.36 open_tree F
 GLIBC_2.36 pidfd_getfd F
 GLIBC_2.36 pidfd_open F
 GLIBC_2.36 pidfd_send_signal F
diff --git a/sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist b/sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist
index 7899efa0e0..87e76f33a0 100644
--- a/sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist
+++ b/sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist
@@ -2733,6 +2733,7 @@ GLIBC_2.36 fsmount F
 GLIBC_2.36 fsopen F
 GLIBC_2.36 fspick F
 GLIBC_2.36 move_mount F
+GLIBC_2.36 open_tree F
 GLIBC_2.36 pidfd_getfd F
 GLIBC_2.36 pidfd_open F
 GLIBC_2.36 pidfd_send_signal F
diff --git a/sysdeps/unix/sysv/linux/microblaze/be/libc.abilist b/sysdeps/unix/sysv/linux/microblaze/be/libc.abilist
index 162a85a8a8..73df42c7aa 100644
--- a/sysdeps/unix/sysv/linux/microblaze/be/libc.abilist
+++ b/sysdeps/unix/sysv/linux/microblaze/be/libc.abilist
@@ -2706,6 +2706,7 @@ GLIBC_2.36 fsmount F
 GLIBC_2.36 fsopen F
 GLIBC_2.36 fspick F
 GLIBC_2.36 move_mount F
+GLIBC_2.36 open_tree F
 GLIBC_2.36 pidfd_getfd F
 GLIBC_2.36 pidfd_open F
 GLIBC_2.36 pidfd_send_signal F
diff --git a/sysdeps/unix/sysv/linux/microblaze/le/libc.abilist b/sysdeps/unix/sysv/linux/microblaze/le/libc.abilist
index a5e28ec2ae..5c2e936547 100644
--- a/sysdeps/unix/sysv/linux/microblaze/le/libc.abilist
+++ b/sysdeps/unix/sysv/linux/microblaze/le/libc.abilist
@@ -2703,6 +2703,7 @@ GLIBC_2.36 fsmount F
 GLIBC_2.36 fsopen F
 GLIBC_2.36 fspick F
 GLIBC_2.36 move_mount F
+GLIBC_2.36 open_tree F
 GLIBC_2.36 pidfd_getfd F
 GLIBC_2.36 pidfd_open F
 GLIBC_2.36 pidfd_send_signal F
diff --git a/sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist b/sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist
index 33627f4b67..45919d27d6 100644
--- a/sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist
+++ b/sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist
@@ -2698,6 +2698,7 @@ GLIBC_2.36 fsmount F
 GLIBC_2.36 fsopen F
 GLIBC_2.36 fspick F
 GLIBC_2.36 move_mount F
+GLIBC_2.36 open_tree F
 GLIBC_2.36 pidfd_getfd F
 GLIBC_2.36 pidfd_open F
 GLIBC_2.36 pidfd_send_signal F
diff --git a/sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist b/sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist
index 333547fc56..8321b0efac 100644
--- a/sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist
+++ b/sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist
@@ -2696,6 +2696,7 @@ GLIBC_2.36 fsmount F
 GLIBC_2.36 fsopen F
 GLIBC_2.36 fspick F
 GLIBC_2.36 move_mount F
+GLIBC_2.36 open_tree F
 GLIBC_2.36 pidfd_getfd F
 GLIBC_2.36 pidfd_open F
 GLIBC_2.36 pidfd_send_signal F
diff --git a/sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist b/sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist
index a46a1aefe7..c7198646d2 100644
--- a/sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist
+++ b/sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist
@@ -2704,6 +2704,7 @@ GLIBC_2.36 fsmount F
 GLIBC_2.36 fsopen F
 GLIBC_2.36 fspick F
 GLIBC_2.36 move_mount F
+GLIBC_2.36 open_tree F
 GLIBC_2.36 pidfd_getfd F
 GLIBC_2.36 pidfd_open F
 GLIBC_2.36 pidfd_send_signal F
diff --git a/sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist b/sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist
index b9b88321a7..8b3cca2a54 100644
--- a/sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist
+++ b/sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist
@@ -2607,6 +2607,7 @@ GLIBC_2.36 fsmount F
 GLIBC_2.36 fsopen F
 GLIBC_2.36 fspick F
 GLIBC_2.36 move_mount F
+GLIBC_2.36 open_tree F
 GLIBC_2.36 pidfd_getfd F
 GLIBC_2.36 pidfd_open F
 GLIBC_2.36 pidfd_send_signal F
diff --git a/sysdeps/unix/sysv/linux/nios2/libc.abilist b/sysdeps/unix/sysv/linux/nios2/libc.abilist
index 0f2293d6a1..2f1595bb35 100644
--- a/sysdeps/unix/sysv/linux/nios2/libc.abilist
+++ b/sysdeps/unix/sysv/linux/nios2/libc.abilist
@@ -2745,6 +2745,7 @@ GLIBC_2.36 fsmount F
 GLIBC_2.36 fsopen F
 GLIBC_2.36 fspick F
 GLIBC_2.36 move_mount F
+GLIBC_2.36 open_tree F
 GLIBC_2.36 pidfd_getfd F
 GLIBC_2.36 pidfd_open F
 GLIBC_2.36 pidfd_send_signal F
diff --git a/sysdeps/unix/sysv/linux/or1k/libc.abilist b/sysdeps/unix/sysv/linux/or1k/libc.abilist
index 812c05804e..d1d4e12d12 100644
--- a/sysdeps/unix/sysv/linux/or1k/libc.abilist
+++ b/sysdeps/unix/sysv/linux/or1k/libc.abilist
@@ -2128,6 +2128,7 @@ GLIBC_2.36 fsmount F
 GLIBC_2.36 fsopen F
 GLIBC_2.36 fspick F
 GLIBC_2.36 move_mount F
+GLIBC_2.36 open_tree F
 GLIBC_2.36 pidfd_getfd F
 GLIBC_2.36 pidfd_open F
 GLIBC_2.36 pidfd_send_signal F
diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist b/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist
index 568e5ab91f..50c9fadaf0 100644
--- a/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist
+++ b/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist
@@ -2760,6 +2760,7 @@ GLIBC_2.36 fsmount F
 GLIBC_2.36 fsopen F
 GLIBC_2.36 fspick F
 GLIBC_2.36 move_mount F
+GLIBC_2.36 open_tree F
 GLIBC_2.36 pidfd_getfd F
 GLIBC_2.36 pidfd_open F
 GLIBC_2.36 pidfd_send_signal F
diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist b/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist
index bf5bab018d..8998a560cd 100644
--- a/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist
+++ b/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist
@@ -2793,6 +2793,7 @@ GLIBC_2.36 fsmount F
 GLIBC_2.36 fsopen F
 GLIBC_2.36 fspick F
 GLIBC_2.36 move_mount F
+GLIBC_2.36 open_tree F
 GLIBC_2.36 pidfd_getfd F
 GLIBC_2.36 pidfd_open F
 GLIBC_2.36 pidfd_send_signal F
diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc64/be/libc.abilist b/sysdeps/unix/sysv/linux/powerpc/powerpc64/be/libc.abilist
index cffbb88886..bca46bdbe5 100644
--- a/sysdeps/unix/sysv/linux/powerpc/powerpc64/be/libc.abilist
+++ b/sysdeps/unix/sysv/linux/powerpc/powerpc64/be/libc.abilist
@@ -2515,6 +2515,7 @@ GLIBC_2.36 fsmount F
 GLIBC_2.36 fsopen F
 GLIBC_2.36 fspick F
 GLIBC_2.36 move_mount F
+GLIBC_2.36 open_tree F
 GLIBC_2.36 pidfd_getfd F
 GLIBC_2.36 pidfd_open F
 GLIBC_2.36 pidfd_send_signal F
diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc64/le/libc.abilist b/sysdeps/unix/sysv/linux/powerpc/powerpc64/le/libc.abilist
index 8dac584380..97f6d96cd6 100644
--- a/sysdeps/unix/sysv/linux/powerpc/powerpc64/le/libc.abilist
+++ b/sysdeps/unix/sysv/linux/powerpc/powerpc64/le/libc.abilist
@@ -2817,6 +2817,7 @@ GLIBC_2.36 fsmount F
 GLIBC_2.36 fsopen F
 GLIBC_2.36 fspick F
 GLIBC_2.36 move_mount F
+GLIBC_2.36 open_tree F
 GLIBC_2.36 pidfd_getfd F
 GLIBC_2.36 pidfd_open F
 GLIBC_2.36 pidfd_send_signal F
diff --git a/sysdeps/unix/sysv/linux/riscv/rv32/libc.abilist b/sysdeps/unix/sysv/linux/riscv/rv32/libc.abilist
index 431a9a30a1..f588745b28 100644
--- a/sysdeps/unix/sysv/linux/riscv/rv32/libc.abilist
+++ b/sysdeps/unix/sysv/linux/riscv/rv32/libc.abilist
@@ -2384,6 +2384,7 @@ GLIBC_2.36 fsmount F
 GLIBC_2.36 fsopen F
 GLIBC_2.36 fspick F
 GLIBC_2.36 move_mount F
+GLIBC_2.36 open_tree F
 GLIBC_2.36 pidfd_getfd F
 GLIBC_2.36 pidfd_open F
 GLIBC_2.36 pidfd_send_signal F
diff --git a/sysdeps/unix/sysv/linux/riscv/rv64/libc.abilist b/sysdeps/unix/sysv/linux/riscv/rv64/libc.abilist
index ec86269bf7..1acf8a4c54 100644
--- a/sysdeps/unix/sysv/linux/riscv/rv64/libc.abilist
+++ b/sysdeps/unix/sysv/linux/riscv/rv64/libc.abilist
@@ -2584,6 +2584,7 @@ GLIBC_2.36 fsmount F
 GLIBC_2.36 fsopen F
 GLIBC_2.36 fspick F
 GLIBC_2.36 move_mount F
+GLIBC_2.36 open_tree F
 GLIBC_2.36 pidfd_getfd F
 GLIBC_2.36 pidfd_open F
 GLIBC_2.36 pidfd_send_signal F
diff --git a/sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist b/sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist
index fe437d8e61..7c8b410f1a 100644
--- a/sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist
+++ b/sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist
@@ -2758,6 +2758,7 @@ GLIBC_2.36 fsmount F
 GLIBC_2.36 fsopen F
 GLIBC_2.36 fspick F
 GLIBC_2.36 move_mount F
+GLIBC_2.36 open_tree F
 GLIBC_2.36 pidfd_getfd F
 GLIBC_2.36 pidfd_open F
 GLIBC_2.36 pidfd_send_signal F
diff --git a/sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist b/sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist
index e802e8da7f..ba9317ee01 100644
--- a/sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist
+++ b/sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist
@@ -2552,6 +2552,7 @@ GLIBC_2.36 fsmount F
 GLIBC_2.36 fsopen F
 GLIBC_2.36 fspick F
 GLIBC_2.36 move_mount F
+GLIBC_2.36 open_tree F
 GLIBC_2.36 pidfd_getfd F
 GLIBC_2.36 pidfd_open F
 GLIBC_2.36 pidfd_send_signal F
diff --git a/sysdeps/unix/sysv/linux/sh/be/libc.abilist b/sysdeps/unix/sysv/linux/sh/be/libc.abilist
index c0a7196f5a..75fa8834f1 100644
--- a/sysdeps/unix/sysv/linux/sh/be/libc.abilist
+++ b/sysdeps/unix/sysv/linux/sh/be/libc.abilist
@@ -2613,6 +2613,7 @@ GLIBC_2.36 fsmount F
 GLIBC_2.36 fsopen F
 GLIBC_2.36 fspick F
 GLIBC_2.36 move_mount F
+GLIBC_2.36 open_tree F
 GLIBC_2.36 pidfd_getfd F
 GLIBC_2.36 pidfd_open F
 GLIBC_2.36 pidfd_send_signal F
diff --git a/sysdeps/unix/sysv/linux/sh/le/libc.abilist b/sysdeps/unix/sysv/linux/sh/le/libc.abilist
index 45589bac28..4a4f8ff33f 100644
--- a/sysdeps/unix/sysv/linux/sh/le/libc.abilist
+++ b/sysdeps/unix/sysv/linux/sh/le/libc.abilist
@@ -2610,6 +2610,7 @@ GLIBC_2.36 fsmount F
 GLIBC_2.36 fsopen F
 GLIBC_2.36 fspick F
 GLIBC_2.36 move_mount F
+GLIBC_2.36 open_tree F
 GLIBC_2.36 pidfd_getfd F
 GLIBC_2.36 pidfd_open F
 GLIBC_2.36 pidfd_send_signal F
diff --git a/sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist b/sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist
index 9b84bc0143..d26671dba8 100644
--- a/sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist
+++ b/sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist
@@ -2753,6 +2753,7 @@ GLIBC_2.36 fsmount F
 GLIBC_2.36 fsopen F
 GLIBC_2.36 fspick F
 GLIBC_2.36 move_mount F
+GLIBC_2.36 open_tree F
 GLIBC_2.36 pidfd_getfd F
 GLIBC_2.36 pidfd_open F
 GLIBC_2.36 pidfd_send_signal F
diff --git a/sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist b/sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist
index 362a22903a..16c2a98ab5 100644
--- a/sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist
+++ b/sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist
@@ -2579,6 +2579,7 @@ GLIBC_2.36 fsmount F
 GLIBC_2.36 fsopen F
 GLIBC_2.36 fspick F
 GLIBC_2.36 move_mount F
+GLIBC_2.36 open_tree F
 GLIBC_2.36 pidfd_getfd F
 GLIBC_2.36 pidfd_open F
 GLIBC_2.36 pidfd_send_signal F
diff --git a/sysdeps/unix/sysv/linux/sys/mount.h b/sysdeps/unix/sysv/linux/sys/mount.h
index e0880f75a5..534d05b3f5 100644
--- a/sysdeps/unix/sysv/linux/sys/mount.h
+++ b/sysdeps/unix/sysv/linux/sys/mount.h
@@ -21,6 +21,7 @@
 #ifndef _SYS_MOUNT_H
 #define _SYS_MOUNT_H	1
 
+#include <fcntl.h>
 #include <features.h>
 #include <sys/ioctl.h>
 
@@ -192,6 +193,10 @@ enum fsconfig_command
 #define FSCONFIG_CMD_RECONFIGURE FSCONFIG_CMD_RECONFIGURE
 };
 
+/* open_tree flags.  */
+#define OPEN_TREE_CLONE    1         /* Clone the target tree and attach the clone */
+#define OPEN_TREE_CLOEXEC  O_CLOEXEC /* Close the file on execve() */
+
 
 __BEGIN_DECLS
 
@@ -231,6 +236,10 @@ extern int fsconfig (int __fd, unsigned int __cmd, const char *__key,
 extern int fspick (int __dfd, const char *__path, unsigned int __flags)
   __THROW;
 
+/* Open the mount point FILENAME in directory DFD using FLAGS.  */
+extern int open_tree (int __dfd, const char *__filename, unsigned int __flags)
+  __THROW;
+
 __END_DECLS
 
 #endif /* _SYS_MOUNT_H */
diff --git a/sysdeps/unix/sysv/linux/syscalls.list b/sysdeps/unix/sysv/linux/syscalls.list
index 38ab457340..493e68b834 100644
--- a/sysdeps/unix/sysv/linux/syscalls.list
+++ b/sysdeps/unix/sysv/linux/syscalls.list
@@ -43,6 +43,7 @@ move_mount	EXTRA	move_mount	i:isisU	move_mount
 munlock		-	munlock		i:aU	munlock
 munlockall	-	munlockall	i:	munlockall
 nfsservctl	EXTRA	nfsservctl	i:ipp	__compat_nfsservctl	nfsservctl@GLIBC_2.0:GLIBC_2.28
+open_tree	EXTRA	open_tree	i:isU	open_tree
 pipe2		-	pipe2		i:fi	__pipe2		pipe2
 pidfd_open	EXTRA	pidfd_open	i:iU	pidfd_open
 pidfd_getfd	EXTRA	pidfd_getfd	i:iiU	pidfd_getfd
diff --git a/sysdeps/unix/sysv/linux/tst-mount-consts.py b/sysdeps/unix/sysv/linux/tst-mount-consts.py
index dd4d50f202..82ab18d963 100755
--- a/sysdeps/unix/sysv/linux/tst-mount-consts.py
+++ b/sysdeps/unix/sysv/linux/tst-mount-consts.py
@@ -55,7 +55,8 @@ def main():
         check('FSOPEN_.*'),
         check('FSMOUNT_.*'),
         # MOVE_MOUNT__MASK may vary depending of the kernel version.
-        check('MOVE_MOUNT_.*', 'MOVE_MOUNT__MASK'))
+        check('MOVE_MOUNT_.*', 'MOVE_MOUNT__MASK'),
+        check('OPEN_TREE_*'))
     sys.exit(status)
 
 if __name__ == '__main__':
diff --git a/sysdeps/unix/sysv/linux/x86_64/64/libc.abilist b/sysdeps/unix/sysv/linux/x86_64/64/libc.abilist
index 93dab79cdc..bd7c4ef801 100644
--- a/sysdeps/unix/sysv/linux/x86_64/64/libc.abilist
+++ b/sysdeps/unix/sysv/linux/x86_64/64/libc.abilist
@@ -2530,6 +2530,7 @@ GLIBC_2.36 fsmount F
 GLIBC_2.36 fsopen F
 GLIBC_2.36 fspick F
 GLIBC_2.36 move_mount F
+GLIBC_2.36 open_tree F
 GLIBC_2.36 pidfd_getfd F
 GLIBC_2.36 pidfd_open F
 GLIBC_2.36 pidfd_send_signal F
diff --git a/sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist b/sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist
index 24daa92e90..1c7f60b41a 100644
--- a/sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist
+++ b/sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist
@@ -2636,6 +2636,7 @@ GLIBC_2.36 fsmount F
 GLIBC_2.36 fsopen F
 GLIBC_2.36 fspick F
 GLIBC_2.36 move_mount F
+GLIBC_2.36 open_tree F
 GLIBC_2.36 pidfd_getfd F
 GLIBC_2.36 pidfd_open F
 GLIBC_2.36 pidfd_send_signal F
-- 
2.34.1


^ permalink raw reply	[flat|nested] 26+ messages in thread

* Re: [PATCH v7 3/5] linux: Add open_tree
  2022-06-24 19:59 ` [PATCH v7 3/5] linux: Add open_tree Adhemerval Zanella
@ 2022-07-04 21:42   ` Carlos O'Donell
  0 siblings, 0 replies; 26+ messages in thread
From: Carlos O'Donell @ 2022-07-04 21:42 UTC (permalink / raw)
  To: Adhemerval Zanella, libc-alpha

On 6/24/22 15:59, Adhemerval Zanella wrote:
> It was added on Linux 5.2 (a07b20004793d8926f78d63eb5980559f7813404)
> to return a O_PATH-opened file descriptor to an existing mountpoint.

LGTM. Matches kernel API.

Reviewed-by: Carlos O'Donell <carlos@redhat.com>

> ---
>  NEWS                                                   | 10 +++++-----
>  sysdeps/unix/sysv/linux/Versions                       |  1 +
>  sysdeps/unix/sysv/linux/aarch64/libc.abilist           |  1 +
>  sysdeps/unix/sysv/linux/alpha/libc.abilist             |  1 +
>  sysdeps/unix/sysv/linux/arc/libc.abilist               |  1 +
>  sysdeps/unix/sysv/linux/arm/be/libc.abilist            |  1 +
>  sysdeps/unix/sysv/linux/arm/le/libc.abilist            |  1 +
>  sysdeps/unix/sysv/linux/csky/libc.abilist              |  1 +
>  sysdeps/unix/sysv/linux/hppa/libc.abilist              |  1 +
>  sysdeps/unix/sysv/linux/i386/libc.abilist              |  1 +
>  sysdeps/unix/sysv/linux/ia64/libc.abilist              |  1 +
>  sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist     |  1 +
>  sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist       |  1 +
>  sysdeps/unix/sysv/linux/microblaze/be/libc.abilist     |  1 +
>  sysdeps/unix/sysv/linux/microblaze/le/libc.abilist     |  1 +
>  sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist   |  1 +
>  sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist |  1 +
>  sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist   |  1 +
>  sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist   |  1 +
>  sysdeps/unix/sysv/linux/nios2/libc.abilist             |  1 +
>  sysdeps/unix/sysv/linux/or1k/libc.abilist              |  1 +
>  .../unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist |  1 +
>  .../sysv/linux/powerpc/powerpc32/nofpu/libc.abilist    |  1 +
>  .../unix/sysv/linux/powerpc/powerpc64/be/libc.abilist  |  1 +
>  .../unix/sysv/linux/powerpc/powerpc64/le/libc.abilist  |  1 +
>  sysdeps/unix/sysv/linux/riscv/rv32/libc.abilist        |  1 +
>  sysdeps/unix/sysv/linux/riscv/rv64/libc.abilist        |  1 +
>  sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist      |  1 +
>  sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist      |  1 +
>  sysdeps/unix/sysv/linux/sh/be/libc.abilist             |  1 +
>  sysdeps/unix/sysv/linux/sh/le/libc.abilist             |  1 +
>  sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist     |  1 +
>  sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist     |  1 +
>  sysdeps/unix/sysv/linux/sys/mount.h                    |  9 +++++++++
>  sysdeps/unix/sysv/linux/syscalls.list                  |  1 +
>  sysdeps/unix/sysv/linux/tst-mount-consts.py            |  3 ++-
>  sysdeps/unix/sysv/linux/x86_64/64/libc.abilist         |  1 +
>  sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist        |  1 +
>  38 files changed, 51 insertions(+), 6 deletions(-)
> 
> diff --git a/NEWS b/NEWS
> index 9557b15f4a..f52718aa77 100644
> --- a/NEWS
> +++ b/NEWS
> @@ -41,11 +41,11 @@ Major new features:
>    have adverse impact.  It is incompatible with EDNS0 usage and DNSSEC
>    validation by applications.
>  
> -* On Linux, the fsopen, fsmount, move_mount, fsconfig, and fspick functions
> -  have been added.  They are part of the new Linux kernel mount APIs that
> -  allow applications to more flexibly configure and operate on filesystem
> -  mounts.  The new mount APIs are specifically designed to work with
> -  namespaces.
> +* On Linux, the fsopen, fsmount, move_mount, fsconfig, fspick, and open_tree
> +  functions have been added.  They are part of the new Linux kernel mount
> +  APIs that allow applications to more flexibly configure and operate on
> +  filesystem mounts.  The new mount APIs are specifically designed to work
> +  with namespaces.

OK.

>  
>  Deprecated and removed features, and other changes affecting compatibility:
>  
> diff --git a/sysdeps/unix/sysv/linux/Versions b/sysdeps/unix/sysv/linux/Versions
> index 7bc5861513..b70530ef40 100644
> --- a/sysdeps/unix/sysv/linux/Versions
> +++ b/sysdeps/unix/sysv/linux/Versions
> @@ -305,6 +305,7 @@ libc {
>      fsopen;
>      fspick;
>      move_mount;
> +    open_tree;

OK.

>      pidfd_open;
>      pidfd_getfd;
>      pidfd_send_signal;
> diff --git a/sysdeps/unix/sysv/linux/aarch64/libc.abilist b/sysdeps/unix/sysv/linux/aarch64/libc.abilist
> index 4eaffedf7f..2a666d8135 100644
> --- a/sysdeps/unix/sysv/linux/aarch64/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/aarch64/libc.abilist
> @@ -2621,6 +2621,7 @@ GLIBC_2.36 fsmount F
>  GLIBC_2.36 fsopen F
>  GLIBC_2.36 fspick F
>  GLIBC_2.36 move_mount F
> +GLIBC_2.36 open_tree F
>  GLIBC_2.36 pidfd_getfd F
>  GLIBC_2.36 pidfd_open F
>  GLIBC_2.36 pidfd_send_signal F
> diff --git a/sysdeps/unix/sysv/linux/alpha/libc.abilist b/sysdeps/unix/sysv/linux/alpha/libc.abilist
> index 6acce2a762..41bd7c1959 100644
> --- a/sysdeps/unix/sysv/linux/alpha/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/alpha/libc.abilist
> @@ -2718,6 +2718,7 @@ GLIBC_2.36 fsmount F
>  GLIBC_2.36 fsopen F
>  GLIBC_2.36 fspick F
>  GLIBC_2.36 move_mount F
> +GLIBC_2.36 open_tree F
>  GLIBC_2.36 pidfd_getfd F
>  GLIBC_2.36 pidfd_open F
>  GLIBC_2.36 pidfd_send_signal F
> diff --git a/sysdeps/unix/sysv/linux/arc/libc.abilist b/sysdeps/unix/sysv/linux/arc/libc.abilist
> index 9d254a3bc3..198fdab2f7 100644
> --- a/sysdeps/unix/sysv/linux/arc/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/arc/libc.abilist
> @@ -2382,6 +2382,7 @@ GLIBC_2.36 fsmount F
>  GLIBC_2.36 fsopen F
>  GLIBC_2.36 fspick F
>  GLIBC_2.36 move_mount F
> +GLIBC_2.36 open_tree F
>  GLIBC_2.36 pidfd_getfd F
>  GLIBC_2.36 pidfd_open F
>  GLIBC_2.36 pidfd_send_signal F
> diff --git a/sysdeps/unix/sysv/linux/arm/be/libc.abilist b/sysdeps/unix/sysv/linux/arm/be/libc.abilist
> index 95026bc448..6fd4e75df2 100644
> --- a/sysdeps/unix/sysv/linux/arm/be/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/arm/be/libc.abilist
> @@ -501,6 +501,7 @@ GLIBC_2.36 fsmount F
>  GLIBC_2.36 fsopen F
>  GLIBC_2.36 fspick F
>  GLIBC_2.36 move_mount F
> +GLIBC_2.36 open_tree F
>  GLIBC_2.36 pidfd_getfd F
>  GLIBC_2.36 pidfd_open F
>  GLIBC_2.36 pidfd_send_signal F
> diff --git a/sysdeps/unix/sysv/linux/arm/le/libc.abilist b/sysdeps/unix/sysv/linux/arm/le/libc.abilist
> index 096246378c..3ec572b50f 100644
> --- a/sysdeps/unix/sysv/linux/arm/le/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/arm/le/libc.abilist
> @@ -498,6 +498,7 @@ GLIBC_2.36 fsmount F
>  GLIBC_2.36 fsopen F
>  GLIBC_2.36 fspick F
>  GLIBC_2.36 move_mount F
> +GLIBC_2.36 open_tree F
>  GLIBC_2.36 pidfd_getfd F
>  GLIBC_2.36 pidfd_open F
>  GLIBC_2.36 pidfd_send_signal F
> diff --git a/sysdeps/unix/sysv/linux/csky/libc.abilist b/sysdeps/unix/sysv/linux/csky/libc.abilist
> index 166008f970..94f3deb3e5 100644
> --- a/sysdeps/unix/sysv/linux/csky/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/csky/libc.abilist
> @@ -2657,6 +2657,7 @@ GLIBC_2.36 fsmount F
>  GLIBC_2.36 fsopen F
>  GLIBC_2.36 fspick F
>  GLIBC_2.36 move_mount F
> +GLIBC_2.36 open_tree F
>  GLIBC_2.36 pidfd_getfd F
>  GLIBC_2.36 pidfd_open F
>  GLIBC_2.36 pidfd_send_signal F
> diff --git a/sysdeps/unix/sysv/linux/hppa/libc.abilist b/sysdeps/unix/sysv/linux/hppa/libc.abilist
> index 155cc6ed96..a7deaf3e26 100644
> --- a/sysdeps/unix/sysv/linux/hppa/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/hppa/libc.abilist
> @@ -2606,6 +2606,7 @@ GLIBC_2.36 fsmount F
>  GLIBC_2.36 fsopen F
>  GLIBC_2.36 fspick F
>  GLIBC_2.36 move_mount F
> +GLIBC_2.36 open_tree F
>  GLIBC_2.36 pidfd_getfd F
>  GLIBC_2.36 pidfd_open F
>  GLIBC_2.36 pidfd_send_signal F
> diff --git a/sysdeps/unix/sysv/linux/i386/libc.abilist b/sysdeps/unix/sysv/linux/i386/libc.abilist
> index 67f7e36556..5f1a1bc4d0 100644
> --- a/sysdeps/unix/sysv/linux/i386/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/i386/libc.abilist
> @@ -2790,6 +2790,7 @@ GLIBC_2.36 fsmount F
>  GLIBC_2.36 fsopen F
>  GLIBC_2.36 fspick F
>  GLIBC_2.36 move_mount F
> +GLIBC_2.36 open_tree F
>  GLIBC_2.36 pidfd_getfd F
>  GLIBC_2.36 pidfd_open F
>  GLIBC_2.36 pidfd_send_signal F
> diff --git a/sysdeps/unix/sysv/linux/ia64/libc.abilist b/sysdeps/unix/sysv/linux/ia64/libc.abilist
> index dbb75aa50f..1af8a55836 100644
> --- a/sysdeps/unix/sysv/linux/ia64/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/ia64/libc.abilist
> @@ -2556,6 +2556,7 @@ GLIBC_2.36 fsmount F
>  GLIBC_2.36 fsopen F
>  GLIBC_2.36 fspick F
>  GLIBC_2.36 move_mount F
> +GLIBC_2.36 open_tree F
>  GLIBC_2.36 pidfd_getfd F
>  GLIBC_2.36 pidfd_open F
>  GLIBC_2.36 pidfd_send_signal F
> diff --git a/sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist b/sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist
> index 6d72cedf89..ad3a4b4008 100644
> --- a/sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist
> @@ -502,6 +502,7 @@ GLIBC_2.36 fsmount F
>  GLIBC_2.36 fsopen F
>  GLIBC_2.36 fspick F
>  GLIBC_2.36 move_mount F
> +GLIBC_2.36 open_tree F
>  GLIBC_2.36 pidfd_getfd F
>  GLIBC_2.36 pidfd_open F
>  GLIBC_2.36 pidfd_send_signal F
> diff --git a/sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist b/sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist
> index 7899efa0e0..87e76f33a0 100644
> --- a/sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist
> @@ -2733,6 +2733,7 @@ GLIBC_2.36 fsmount F
>  GLIBC_2.36 fsopen F
>  GLIBC_2.36 fspick F
>  GLIBC_2.36 move_mount F
> +GLIBC_2.36 open_tree F
>  GLIBC_2.36 pidfd_getfd F
>  GLIBC_2.36 pidfd_open F
>  GLIBC_2.36 pidfd_send_signal F
> diff --git a/sysdeps/unix/sysv/linux/microblaze/be/libc.abilist b/sysdeps/unix/sysv/linux/microblaze/be/libc.abilist
> index 162a85a8a8..73df42c7aa 100644
> --- a/sysdeps/unix/sysv/linux/microblaze/be/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/microblaze/be/libc.abilist
> @@ -2706,6 +2706,7 @@ GLIBC_2.36 fsmount F
>  GLIBC_2.36 fsopen F
>  GLIBC_2.36 fspick F
>  GLIBC_2.36 move_mount F
> +GLIBC_2.36 open_tree F
>  GLIBC_2.36 pidfd_getfd F
>  GLIBC_2.36 pidfd_open F
>  GLIBC_2.36 pidfd_send_signal F
> diff --git a/sysdeps/unix/sysv/linux/microblaze/le/libc.abilist b/sysdeps/unix/sysv/linux/microblaze/le/libc.abilist
> index a5e28ec2ae..5c2e936547 100644
> --- a/sysdeps/unix/sysv/linux/microblaze/le/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/microblaze/le/libc.abilist
> @@ -2703,6 +2703,7 @@ GLIBC_2.36 fsmount F
>  GLIBC_2.36 fsopen F
>  GLIBC_2.36 fspick F
>  GLIBC_2.36 move_mount F
> +GLIBC_2.36 open_tree F
>  GLIBC_2.36 pidfd_getfd F
>  GLIBC_2.36 pidfd_open F
>  GLIBC_2.36 pidfd_send_signal F
> diff --git a/sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist b/sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist
> index 33627f4b67..45919d27d6 100644
> --- a/sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist
> @@ -2698,6 +2698,7 @@ GLIBC_2.36 fsmount F
>  GLIBC_2.36 fsopen F
>  GLIBC_2.36 fspick F
>  GLIBC_2.36 move_mount F
> +GLIBC_2.36 open_tree F
>  GLIBC_2.36 pidfd_getfd F
>  GLIBC_2.36 pidfd_open F
>  GLIBC_2.36 pidfd_send_signal F
> diff --git a/sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist b/sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist
> index 333547fc56..8321b0efac 100644
> --- a/sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist
> @@ -2696,6 +2696,7 @@ GLIBC_2.36 fsmount F
>  GLIBC_2.36 fsopen F
>  GLIBC_2.36 fspick F
>  GLIBC_2.36 move_mount F
> +GLIBC_2.36 open_tree F
>  GLIBC_2.36 pidfd_getfd F
>  GLIBC_2.36 pidfd_open F
>  GLIBC_2.36 pidfd_send_signal F
> diff --git a/sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist b/sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist
> index a46a1aefe7..c7198646d2 100644
> --- a/sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist
> @@ -2704,6 +2704,7 @@ GLIBC_2.36 fsmount F
>  GLIBC_2.36 fsopen F
>  GLIBC_2.36 fspick F
>  GLIBC_2.36 move_mount F
> +GLIBC_2.36 open_tree F
>  GLIBC_2.36 pidfd_getfd F
>  GLIBC_2.36 pidfd_open F
>  GLIBC_2.36 pidfd_send_signal F
> diff --git a/sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist b/sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist
> index b9b88321a7..8b3cca2a54 100644
> --- a/sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist
> @@ -2607,6 +2607,7 @@ GLIBC_2.36 fsmount F
>  GLIBC_2.36 fsopen F
>  GLIBC_2.36 fspick F
>  GLIBC_2.36 move_mount F
> +GLIBC_2.36 open_tree F
>  GLIBC_2.36 pidfd_getfd F
>  GLIBC_2.36 pidfd_open F
>  GLIBC_2.36 pidfd_send_signal F
> diff --git a/sysdeps/unix/sysv/linux/nios2/libc.abilist b/sysdeps/unix/sysv/linux/nios2/libc.abilist
> index 0f2293d6a1..2f1595bb35 100644
> --- a/sysdeps/unix/sysv/linux/nios2/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/nios2/libc.abilist
> @@ -2745,6 +2745,7 @@ GLIBC_2.36 fsmount F
>  GLIBC_2.36 fsopen F
>  GLIBC_2.36 fspick F
>  GLIBC_2.36 move_mount F
> +GLIBC_2.36 open_tree F
>  GLIBC_2.36 pidfd_getfd F
>  GLIBC_2.36 pidfd_open F
>  GLIBC_2.36 pidfd_send_signal F
> diff --git a/sysdeps/unix/sysv/linux/or1k/libc.abilist b/sysdeps/unix/sysv/linux/or1k/libc.abilist
> index 812c05804e..d1d4e12d12 100644
> --- a/sysdeps/unix/sysv/linux/or1k/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/or1k/libc.abilist
> @@ -2128,6 +2128,7 @@ GLIBC_2.36 fsmount F
>  GLIBC_2.36 fsopen F
>  GLIBC_2.36 fspick F
>  GLIBC_2.36 move_mount F
> +GLIBC_2.36 open_tree F
>  GLIBC_2.36 pidfd_getfd F
>  GLIBC_2.36 pidfd_open F
>  GLIBC_2.36 pidfd_send_signal F
> diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist b/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist
> index 568e5ab91f..50c9fadaf0 100644
> --- a/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist
> @@ -2760,6 +2760,7 @@ GLIBC_2.36 fsmount F
>  GLIBC_2.36 fsopen F
>  GLIBC_2.36 fspick F
>  GLIBC_2.36 move_mount F
> +GLIBC_2.36 open_tree F
>  GLIBC_2.36 pidfd_getfd F
>  GLIBC_2.36 pidfd_open F
>  GLIBC_2.36 pidfd_send_signal F
> diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist b/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist
> index bf5bab018d..8998a560cd 100644
> --- a/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist
> @@ -2793,6 +2793,7 @@ GLIBC_2.36 fsmount F
>  GLIBC_2.36 fsopen F
>  GLIBC_2.36 fspick F
>  GLIBC_2.36 move_mount F
> +GLIBC_2.36 open_tree F
>  GLIBC_2.36 pidfd_getfd F
>  GLIBC_2.36 pidfd_open F
>  GLIBC_2.36 pidfd_send_signal F
> diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc64/be/libc.abilist b/sysdeps/unix/sysv/linux/powerpc/powerpc64/be/libc.abilist
> index cffbb88886..bca46bdbe5 100644
> --- a/sysdeps/unix/sysv/linux/powerpc/powerpc64/be/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/powerpc/powerpc64/be/libc.abilist
> @@ -2515,6 +2515,7 @@ GLIBC_2.36 fsmount F
>  GLIBC_2.36 fsopen F
>  GLIBC_2.36 fspick F
>  GLIBC_2.36 move_mount F
> +GLIBC_2.36 open_tree F
>  GLIBC_2.36 pidfd_getfd F
>  GLIBC_2.36 pidfd_open F
>  GLIBC_2.36 pidfd_send_signal F
> diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc64/le/libc.abilist b/sysdeps/unix/sysv/linux/powerpc/powerpc64/le/libc.abilist
> index 8dac584380..97f6d96cd6 100644
> --- a/sysdeps/unix/sysv/linux/powerpc/powerpc64/le/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/powerpc/powerpc64/le/libc.abilist
> @@ -2817,6 +2817,7 @@ GLIBC_2.36 fsmount F
>  GLIBC_2.36 fsopen F
>  GLIBC_2.36 fspick F
>  GLIBC_2.36 move_mount F
> +GLIBC_2.36 open_tree F
>  GLIBC_2.36 pidfd_getfd F
>  GLIBC_2.36 pidfd_open F
>  GLIBC_2.36 pidfd_send_signal F
> diff --git a/sysdeps/unix/sysv/linux/riscv/rv32/libc.abilist b/sysdeps/unix/sysv/linux/riscv/rv32/libc.abilist
> index 431a9a30a1..f588745b28 100644
> --- a/sysdeps/unix/sysv/linux/riscv/rv32/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/riscv/rv32/libc.abilist
> @@ -2384,6 +2384,7 @@ GLIBC_2.36 fsmount F
>  GLIBC_2.36 fsopen F
>  GLIBC_2.36 fspick F
>  GLIBC_2.36 move_mount F
> +GLIBC_2.36 open_tree F
>  GLIBC_2.36 pidfd_getfd F
>  GLIBC_2.36 pidfd_open F
>  GLIBC_2.36 pidfd_send_signal F
> diff --git a/sysdeps/unix/sysv/linux/riscv/rv64/libc.abilist b/sysdeps/unix/sysv/linux/riscv/rv64/libc.abilist
> index ec86269bf7..1acf8a4c54 100644
> --- a/sysdeps/unix/sysv/linux/riscv/rv64/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/riscv/rv64/libc.abilist
> @@ -2584,6 +2584,7 @@ GLIBC_2.36 fsmount F
>  GLIBC_2.36 fsopen F
>  GLIBC_2.36 fspick F
>  GLIBC_2.36 move_mount F
> +GLIBC_2.36 open_tree F
>  GLIBC_2.36 pidfd_getfd F
>  GLIBC_2.36 pidfd_open F
>  GLIBC_2.36 pidfd_send_signal F
> diff --git a/sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist b/sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist
> index fe437d8e61..7c8b410f1a 100644
> --- a/sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist
> @@ -2758,6 +2758,7 @@ GLIBC_2.36 fsmount F
>  GLIBC_2.36 fsopen F
>  GLIBC_2.36 fspick F
>  GLIBC_2.36 move_mount F
> +GLIBC_2.36 open_tree F
>  GLIBC_2.36 pidfd_getfd F
>  GLIBC_2.36 pidfd_open F
>  GLIBC_2.36 pidfd_send_signal F
> diff --git a/sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist b/sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist
> index e802e8da7f..ba9317ee01 100644
> --- a/sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist
> @@ -2552,6 +2552,7 @@ GLIBC_2.36 fsmount F
>  GLIBC_2.36 fsopen F
>  GLIBC_2.36 fspick F
>  GLIBC_2.36 move_mount F
> +GLIBC_2.36 open_tree F
>  GLIBC_2.36 pidfd_getfd F
>  GLIBC_2.36 pidfd_open F
>  GLIBC_2.36 pidfd_send_signal F
> diff --git a/sysdeps/unix/sysv/linux/sh/be/libc.abilist b/sysdeps/unix/sysv/linux/sh/be/libc.abilist
> index c0a7196f5a..75fa8834f1 100644
> --- a/sysdeps/unix/sysv/linux/sh/be/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/sh/be/libc.abilist
> @@ -2613,6 +2613,7 @@ GLIBC_2.36 fsmount F
>  GLIBC_2.36 fsopen F
>  GLIBC_2.36 fspick F
>  GLIBC_2.36 move_mount F
> +GLIBC_2.36 open_tree F
>  GLIBC_2.36 pidfd_getfd F
>  GLIBC_2.36 pidfd_open F
>  GLIBC_2.36 pidfd_send_signal F
> diff --git a/sysdeps/unix/sysv/linux/sh/le/libc.abilist b/sysdeps/unix/sysv/linux/sh/le/libc.abilist
> index 45589bac28..4a4f8ff33f 100644
> --- a/sysdeps/unix/sysv/linux/sh/le/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/sh/le/libc.abilist
> @@ -2610,6 +2610,7 @@ GLIBC_2.36 fsmount F
>  GLIBC_2.36 fsopen F
>  GLIBC_2.36 fspick F
>  GLIBC_2.36 move_mount F
> +GLIBC_2.36 open_tree F
>  GLIBC_2.36 pidfd_getfd F
>  GLIBC_2.36 pidfd_open F
>  GLIBC_2.36 pidfd_send_signal F
> diff --git a/sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist b/sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist
> index 9b84bc0143..d26671dba8 100644
> --- a/sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist
> @@ -2753,6 +2753,7 @@ GLIBC_2.36 fsmount F
>  GLIBC_2.36 fsopen F
>  GLIBC_2.36 fspick F
>  GLIBC_2.36 move_mount F
> +GLIBC_2.36 open_tree F
>  GLIBC_2.36 pidfd_getfd F
>  GLIBC_2.36 pidfd_open F
>  GLIBC_2.36 pidfd_send_signal F
> diff --git a/sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist b/sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist
> index 362a22903a..16c2a98ab5 100644
> --- a/sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist
> @@ -2579,6 +2579,7 @@ GLIBC_2.36 fsmount F
>  GLIBC_2.36 fsopen F
>  GLIBC_2.36 fspick F
>  GLIBC_2.36 move_mount F
> +GLIBC_2.36 open_tree F
>  GLIBC_2.36 pidfd_getfd F
>  GLIBC_2.36 pidfd_open F
>  GLIBC_2.36 pidfd_send_signal F
> diff --git a/sysdeps/unix/sysv/linux/sys/mount.h b/sysdeps/unix/sysv/linux/sys/mount.h
> index e0880f75a5..534d05b3f5 100644
> --- a/sysdeps/unix/sysv/linux/sys/mount.h
> +++ b/sysdeps/unix/sysv/linux/sys/mount.h
> @@ -21,6 +21,7 @@
>  #ifndef _SYS_MOUNT_H
>  #define _SYS_MOUNT_H	1
>  
> +#include <fcntl.h>

OK.

>  #include <features.h>
>  #include <sys/ioctl.h>
>  
> @@ -192,6 +193,10 @@ enum fsconfig_command
>  #define FSCONFIG_CMD_RECONFIGURE FSCONFIG_CMD_RECONFIGURE
>  };
>  
> +/* open_tree flags.  */
> +#define OPEN_TREE_CLONE    1         /* Clone the target tree and attach the clone */
> +#define OPEN_TREE_CLOEXEC  O_CLOEXEC /* Close the file on execve() */

OK. OPEN_TREE_* 1, O_CLOEXEC. Matches kernel.

> +
>  
>  __BEGIN_DECLS
>  
> @@ -231,6 +236,10 @@ extern int fsconfig (int __fd, unsigned int __cmd, const char *__key,
>  extern int fspick (int __dfd, const char *__path, unsigned int __flags)

OK. return int. signature is int, const char *, unsigned int. Matches kernel.

>    __THROW;
>  
> +/* Open the mount point FILENAME in directory DFD using FLAGS.  */
> +extern int open_tree (int __dfd, const char *__filename, unsigned int __flags)
> +  __THROW;
> +
>  __END_DECLS
>  
>  #endif /* _SYS_MOUNT_H */
> diff --git a/sysdeps/unix/sysv/linux/syscalls.list b/sysdeps/unix/sysv/linux/syscalls.list
> index 38ab457340..493e68b834 100644
> --- a/sysdeps/unix/sysv/linux/syscalls.list
> +++ b/sysdeps/unix/sysv/linux/syscalls.list
> @@ -43,6 +43,7 @@ move_mount	EXTRA	move_mount	i:isisU	move_mount
>  munlock		-	munlock		i:aU	munlock
>  munlockall	-	munlockall	i:	munlockall
>  nfsservctl	EXTRA	nfsservctl	i:ipp	__compat_nfsservctl	nfsservctl@GLIBC_2.0:GLIBC_2.28
> +open_tree	EXTRA	open_tree	i:isU	open_tree

OK. i:isU. Matches kernel.

>  pipe2		-	pipe2		i:fi	__pipe2		pipe2
>  pidfd_open	EXTRA	pidfd_open	i:iU	pidfd_open
>  pidfd_getfd	EXTRA	pidfd_getfd	i:iiU	pidfd_getfd
> diff --git a/sysdeps/unix/sysv/linux/tst-mount-consts.py b/sysdeps/unix/sysv/linux/tst-mount-consts.py
> index dd4d50f202..82ab18d963 100755
> --- a/sysdeps/unix/sysv/linux/tst-mount-consts.py
> +++ b/sysdeps/unix/sysv/linux/tst-mount-consts.py
> @@ -55,7 +55,8 @@ def main():
>          check('FSOPEN_.*'),
>          check('FSMOUNT_.*'),
>          # MOVE_MOUNT__MASK may vary depending of the kernel version.
> -        check('MOVE_MOUNT_.*', 'MOVE_MOUNT__MASK'))
> +        check('MOVE_MOUNT_.*', 'MOVE_MOUNT__MASK'),
> +        check('OPEN_TREE_*'))
>      sys.exit(status)
>  
>  if __name__ == '__main__':
> diff --git a/sysdeps/unix/sysv/linux/x86_64/64/libc.abilist b/sysdeps/unix/sysv/linux/x86_64/64/libc.abilist
> index 93dab79cdc..bd7c4ef801 100644
> --- a/sysdeps/unix/sysv/linux/x86_64/64/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/x86_64/64/libc.abilist
> @@ -2530,6 +2530,7 @@ GLIBC_2.36 fsmount F
>  GLIBC_2.36 fsopen F
>  GLIBC_2.36 fspick F
>  GLIBC_2.36 move_mount F
> +GLIBC_2.36 open_tree F
>  GLIBC_2.36 pidfd_getfd F
>  GLIBC_2.36 pidfd_open F
>  GLIBC_2.36 pidfd_send_signal F
> diff --git a/sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist b/sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist
> index 24daa92e90..1c7f60b41a 100644
> --- a/sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist
> @@ -2636,6 +2636,7 @@ GLIBC_2.36 fsmount F
>  GLIBC_2.36 fsopen F
>  GLIBC_2.36 fspick F
>  GLIBC_2.36 move_mount F
> +GLIBC_2.36 open_tree F
>  GLIBC_2.36 pidfd_getfd F
>  GLIBC_2.36 pidfd_open F
>  GLIBC_2.36 pidfd_send_signal F


-- 
Cheers,
Carlos.


^ permalink raw reply	[flat|nested] 26+ messages in thread

* [PATCH v7 4/5] linux: Add tst-mount to check for Linux new mount API
  2022-06-24 19:59 [PATCH v7 0/5] linux: Add new syscalls Adhemerval Zanella
                   ` (2 preceding siblings ...)
  2022-06-24 19:59 ` [PATCH v7 3/5] linux: Add open_tree Adhemerval Zanella
@ 2022-06-24 19:59 ` Adhemerval Zanella
  2022-07-04 21:45   ` Carlos O'Donell
  2022-06-24 19:59 ` [PATCH v7 5/5] linux: Add mount_setattr Adhemerval Zanella
  4 siblings, 1 reply; 26+ messages in thread
From: Adhemerval Zanella @ 2022-06-24 19:59 UTC (permalink / raw)
  To: libc-alpha, Carlos O'Donell

The new mount API was added on Linux 5.2 with six new syscalls:
fsopen, fsconfig, fsmount, move_mount, fspick, and open_tree.

The new test verifies minimal functionality along with error paths
for specific arguments and their corner cases.

Checked on x86_64-linux-gnu.
---
 sysdeps/unix/sysv/linux/Makefile    |  1 +
 sysdeps/unix/sysv/linux/tst-mount.c | 95 +++++++++++++++++++++++++++++
 2 files changed, 96 insertions(+)
 create mode 100644 sysdeps/unix/sysv/linux/tst-mount.c

diff --git a/sysdeps/unix/sysv/linux/Makefile b/sysdeps/unix/sysv/linux/Makefile
index 7ffcf7ed83..2ccc92b6b8 100644
--- a/sysdeps/unix/sysv/linux/Makefile
+++ b/sysdeps/unix/sysv/linux/Makefile
@@ -130,6 +130,7 @@ tests += tst-clone tst-clone2 tst-clone3 tst-fanotify tst-personality \
   tst-getauxval \
   tst-pidfd \
   tst-process_mrelease \
+  tst-mount \
   # tests
 
 # process_madvise requires CAP_SYS_ADMIN.
diff --git a/sysdeps/unix/sysv/linux/tst-mount.c b/sysdeps/unix/sysv/linux/tst-mount.c
new file mode 100644
index 0000000000..12a665f950
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/tst-mount.c
@@ -0,0 +1,95 @@
+/* Basic tests for the new Linux API added on Linux 5.2.
+   Copyright (C) 2022 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If
+   not, see <https://www.gnu.org/licenses/>.  */
+
+#include <errno.h>
+#include <support/check.h>
+#include <support/xunistd.h>
+#include <support/namespace.h>
+#include <sys/wait.h>
+#include <sys/mount.h>
+
+static void
+subprocess (void)
+{
+  int r = fsopen ("it_should_be_not_a_valid_mount", 0);
+  TEST_VERIFY_EXIT (r == -1);
+  if (errno == ENOSYS)
+    FAIL_UNSUPPORTED ("kernel does not support new mount API, skipping test");
+  TEST_COMPARE (errno, ENODEV);
+
+  int fd = fsopen ("tmpfs", FSOPEN_CLOEXEC);
+  TEST_VERIFY (fd != -1);
+
+  TEST_COMPARE (fsconfig (-1, FSCONFIG_SET_STRING, "size", "2048", 0), -1);
+  TEST_COMPARE (errno, EINVAL);
+
+  {
+    int r = fsconfig (fd, FSCONFIG_SET_STRING, "size", "2048", 0);
+    TEST_VERIFY (r != -1);
+    r = fsconfig (fd, FSCONFIG_CMD_CREATE, NULL, NULL, 0);
+    TEST_VERIFY (r != -1);
+  }
+
+  TEST_COMPARE (fsmount (-1, FSMOUNT_CLOEXEC, MOUNT_ATTR_NODEV), -1);
+  TEST_COMPARE (errno, EBADF);
+
+  int mfd = fsmount (fd, FSMOUNT_CLOEXEC, MOUNT_ATTR_NODEV);
+  TEST_VERIFY (mfd != -1);
+
+  TEST_COMPARE (move_mount (-1, "", AT_FDCWD, "/tmp", 0), -1);
+  TEST_COMPARE (errno, ENOENT);
+  {
+    int r = move_mount (mfd, "", AT_FDCWD, "/tmp", MOVE_MOUNT_F_EMPTY_PATH);
+    TEST_VERIFY (r != -1);
+  }
+
+  TEST_COMPARE (fspick (AT_FDCWD, "", 0), -1);
+  TEST_COMPARE (errno, ENOENT);
+  {
+    int pfd = fspick (AT_FDCWD, "/tmp", FSPICK_CLOEXEC);
+    TEST_VERIFY (pfd != -1);
+  }
+
+  TEST_COMPARE (open_tree (AT_FDCWD, "", 0), -1);
+  TEST_COMPARE (errno, ENOENT);
+  {
+    int fd_tree = open_tree (AT_FDCWD, "/tmp",
+			     OPEN_TREE_CLONE | OPEN_TREE_CLOEXEC);
+    TEST_VERIFY (fd_tree != -1);
+  }
+
+  _exit (0);
+}
+
+static int
+do_test (void)
+{
+  support_become_root ();
+
+  pid_t pid = xfork ();
+  if (pid == 0)
+    subprocess ();
+
+  int status;
+  xwaitpid (pid, &status, 0);
+  TEST_VERIFY (WIFEXITED (status));
+
+  return 0;
+}
+
+#include <support/test-driver.c>
-- 
2.34.1


^ permalink raw reply	[flat|nested] 26+ messages in thread

* Re: [PATCH v7 4/5] linux: Add tst-mount to check for Linux new mount API
  2022-06-24 19:59 ` [PATCH v7 4/5] linux: Add tst-mount to check for Linux new mount API Adhemerval Zanella
@ 2022-07-04 21:45   ` Carlos O'Donell
  0 siblings, 0 replies; 26+ messages in thread
From: Carlos O'Donell @ 2022-07-04 21:45 UTC (permalink / raw)
  To: Adhemerval Zanella, libc-alpha

On 6/24/22 15:59, Adhemerval Zanella wrote:
> The new mount API was added on Linux 5.2 with six new syscalls:
> fsopen, fsconfig, fsmount, move_mount, fspick, and open_tree.
> 
> The new test verifies minimal functionality along with error paths
> for specific arguments and their corner cases.
> 
> Checked on x86_64-linux-gnu.

LGTM. Exercises error paths.

Reviewed-by: Carlos O'Donell <carlos@redhat.com>

> ---
>  sysdeps/unix/sysv/linux/Makefile    |  1 +
>  sysdeps/unix/sysv/linux/tst-mount.c | 95 +++++++++++++++++++++++++++++
>  2 files changed, 96 insertions(+)
>  create mode 100644 sysdeps/unix/sysv/linux/tst-mount.c
> 
> diff --git a/sysdeps/unix/sysv/linux/Makefile b/sysdeps/unix/sysv/linux/Makefile
> index 7ffcf7ed83..2ccc92b6b8 100644
> --- a/sysdeps/unix/sysv/linux/Makefile
> +++ b/sysdeps/unix/sysv/linux/Makefile
> @@ -130,6 +130,7 @@ tests += tst-clone tst-clone2 tst-clone3 tst-fanotify tst-personality \
>    tst-getauxval \
>    tst-pidfd \
>    tst-process_mrelease \
> +  tst-mount \

OK.

>    # tests
>  
>  # process_madvise requires CAP_SYS_ADMIN.
> diff --git a/sysdeps/unix/sysv/linux/tst-mount.c b/sysdeps/unix/sysv/linux/tst-mount.c
> new file mode 100644
> index 0000000000..12a665f950
> --- /dev/null
> +++ b/sysdeps/unix/sysv/linux/tst-mount.c
> @@ -0,0 +1,95 @@
> +/* Basic tests for the new Linux API added on Linux 5.2.
> +   Copyright (C) 2022 Free Software Foundation, Inc.
> +   This file is part of the GNU C Library.
> +
> +   The GNU C Library is free software; you can redistribute it and/or
> +   modify it under the terms of the GNU Lesser General Public License as
> +   published by the Free Software Foundation; either version 2.1 of the
> +   License, or (at your option) any later version.
> +
> +   The GNU C Library is distributed in the hope that it will be useful,
> +   but WITHOUT ANY WARRANTY; without even the implied warranty of
> +   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
> +   Lesser General Public License for more details.
> +
> +   You should have received a copy of the GNU Lesser General Public
> +   License along with the GNU C Library; see the file COPYING.LIB.  If
> +   not, see <https://www.gnu.org/licenses/>.  */
> +
> +#include <errno.h>
> +#include <support/check.h>
> +#include <support/xunistd.h>
> +#include <support/namespace.h>
> +#include <sys/wait.h>
> +#include <sys/mount.h>
> +
> +static void
> +subprocess (void)
> +{
> +  int r = fsopen ("it_should_be_not_a_valid_mount", 0);
> +  TEST_VERIFY_EXIT (r == -1);
> +  if (errno == ENOSYS)
> +    FAIL_UNSUPPORTED ("kernel does not support new mount API, skipping test");
> +  TEST_COMPARE (errno, ENODEV);

OK. Invalid mount path.

> +
> +  int fd = fsopen ("tmpfs", FSOPEN_CLOEXEC);
> +  TEST_VERIFY (fd != -1);
> +
> +  TEST_COMPARE (fsconfig (-1, FSCONFIG_SET_STRING, "size", "2048", 0), -1);
> +  TEST_COMPARE (errno, EINVAL);
> +
> +  {
> +    int r = fsconfig (fd, FSCONFIG_SET_STRING, "size", "2048", 0);
> +    TEST_VERIFY (r != -1);
> +    r = fsconfig (fd, FSCONFIG_CMD_CREATE, NULL, NULL, 0);
> +    TEST_VERIFY (r != -1);
> +  }
> +
> +  TEST_COMPARE (fsmount (-1, FSMOUNT_CLOEXEC, MOUNT_ATTR_NODEV), -1);
> +  TEST_COMPARE (errno, EBADF);

OK. -1 is an invalid fd.

> +
> +  int mfd = fsmount (fd, FSMOUNT_CLOEXEC, MOUNT_ATTR_NODEV);
> +  TEST_VERIFY (mfd != -1);
> +
> +  TEST_COMPARE (move_mount (-1, "", AT_FDCWD, "/tmp", 0), -1);
> +  TEST_COMPARE (errno, ENOENT);
> +  {
> +    int r = move_mount (mfd, "", AT_FDCWD, "/tmp", MOVE_MOUNT_F_EMPTY_PATH);
> +    TEST_VERIFY (r != -1);
> +  }
> +
> +  TEST_COMPARE (fspick (AT_FDCWD, "", 0), -1);
> +  TEST_COMPARE (errno, ENOENT);
> +  {
> +    int pfd = fspick (AT_FDCWD, "/tmp", FSPICK_CLOEXEC);
> +    TEST_VERIFY (pfd != -1);
> +  }

OK.

> +
> +  TEST_COMPARE (open_tree (AT_FDCWD, "", 0), -1);
> +  TEST_COMPARE (errno, ENOENT);
> +  {
> +    int fd_tree = open_tree (AT_FDCWD, "/tmp",
> +			     OPEN_TREE_CLONE | OPEN_TREE_CLOEXEC);
> +    TEST_VERIFY (fd_tree != -1);

OK.

> +  }
> +
> +  _exit (0);
> +}
> +
> +static int
> +do_test (void)
> +{
> +  support_become_root ();
> +
> +  pid_t pid = xfork ();
> +  if (pid == 0)
> +    subprocess ();
> +
> +  int status;
> +  xwaitpid (pid, &status, 0);
> +  TEST_VERIFY (WIFEXITED (status));
> +
> +  return 0;
> +}
> +
> +#include <support/test-driver.c>


-- 
Cheers,
Carlos.


^ permalink raw reply	[flat|nested] 26+ messages in thread

* [PATCH v7 5/5] linux: Add mount_setattr
  2022-06-24 19:59 [PATCH v7 0/5] linux: Add new syscalls Adhemerval Zanella
                   ` (3 preceding siblings ...)
  2022-06-24 19:59 ` [PATCH v7 4/5] linux: Add tst-mount to check for Linux new mount API Adhemerval Zanella
@ 2022-06-24 19:59 ` Adhemerval Zanella
  2022-07-04 21:51   ` Carlos O'Donell
  4 siblings, 1 reply; 26+ messages in thread
From: Adhemerval Zanella @ 2022-06-24 19:59 UTC (permalink / raw)
  To: libc-alpha, Carlos O'Donell

It was added on Linux 5.12 (2a1867219c7b27f928e2545782b86daaf9ad50bd)
to allow change the properties of a mount or a mount tree using file
descriptors which the new mount api is based on.

Checked on x86_64-linux-gnu.
---
 NEWS                                          |  8 ++---
 sysdeps/unix/sysv/linux/Versions              |  1 +
 sysdeps/unix/sysv/linux/aarch64/libc.abilist  |  1 +
 sysdeps/unix/sysv/linux/alpha/libc.abilist    |  1 +
 sysdeps/unix/sysv/linux/arc/libc.abilist      |  1 +
 sysdeps/unix/sysv/linux/arm/be/libc.abilist   |  1 +
 sysdeps/unix/sysv/linux/arm/le/libc.abilist   |  1 +
 sysdeps/unix/sysv/linux/csky/libc.abilist     |  1 +
 sysdeps/unix/sysv/linux/hppa/libc.abilist     |  1 +
 sysdeps/unix/sysv/linux/i386/libc.abilist     |  1 +
 sysdeps/unix/sysv/linux/ia64/libc.abilist     |  1 +
 .../sysv/linux/m68k/coldfire/libc.abilist     |  1 +
 .../unix/sysv/linux/m68k/m680x0/libc.abilist  |  1 +
 .../sysv/linux/microblaze/be/libc.abilist     |  1 +
 .../sysv/linux/microblaze/le/libc.abilist     |  1 +
 .../sysv/linux/mips/mips32/fpu/libc.abilist   |  1 +
 .../sysv/linux/mips/mips32/nofpu/libc.abilist |  1 +
 .../sysv/linux/mips/mips64/n32/libc.abilist   |  1 +
 .../sysv/linux/mips/mips64/n64/libc.abilist   |  1 +
 sysdeps/unix/sysv/linux/nios2/libc.abilist    |  1 +
 sysdeps/unix/sysv/linux/or1k/libc.abilist     |  1 +
 .../linux/powerpc/powerpc32/fpu/libc.abilist  |  1 +
 .../powerpc/powerpc32/nofpu/libc.abilist      |  1 +
 .../linux/powerpc/powerpc64/be/libc.abilist   |  1 +
 .../linux/powerpc/powerpc64/le/libc.abilist   |  1 +
 .../unix/sysv/linux/riscv/rv32/libc.abilist   |  1 +
 .../unix/sysv/linux/riscv/rv64/libc.abilist   |  1 +
 .../unix/sysv/linux/s390/s390-32/libc.abilist |  1 +
 .../unix/sysv/linux/s390/s390-64/libc.abilist |  1 +
 sysdeps/unix/sysv/linux/sh/be/libc.abilist    |  1 +
 sysdeps/unix/sysv/linux/sh/le/libc.abilist    |  1 +
 .../sysv/linux/sparc/sparc32/libc.abilist     |  1 +
 .../sysv/linux/sparc/sparc64/libc.abilist     |  1 +
 sysdeps/unix/sysv/linux/sys/mount.h           | 22 ++++++++++++++
 sysdeps/unix/sysv/linux/syscalls.list         |  1 +
 sysdeps/unix/sysv/linux/tst-mount-consts.py   |  4 ++-
 sysdeps/unix/sysv/linux/tst-mount.c           | 30 +++++++++++++++++--
 .../unix/sysv/linux/x86_64/64/libc.abilist    |  1 +
 .../unix/sysv/linux/x86_64/x32/libc.abilist   |  1 +
 39 files changed, 91 insertions(+), 8 deletions(-)

diff --git a/NEWS b/NEWS
index f52718aa77..3fe7c29644 100644
--- a/NEWS
+++ b/NEWS
@@ -41,10 +41,10 @@ Major new features:
   have adverse impact.  It is incompatible with EDNS0 usage and DNSSEC
   validation by applications.
 
-* On Linux, the fsopen, fsmount, move_mount, fsconfig, fspick, and open_tree
-  functions have been added.  They are part of the new Linux kernel mount
-  APIs that allow applications to more flexibly configure and operate on
-  filesystem mounts.  The new mount APIs are specifically designed to work
+* On Linux, the fsopen, fsmount, move_mount, fsconfig, fspick, open_tree,
+  and mount_setattr have been added.  They are part of the new Linux kernel
+  mount APIs that allow applications to more flexibly configure and operate
+  on filesystem mounts.  The new mount APIs are specifically designed to work
   with namespaces.
 
 Deprecated and removed features, and other changes affecting compatibility:
diff --git a/sysdeps/unix/sysv/linux/Versions b/sysdeps/unix/sysv/linux/Versions
index b70530ef40..65d2ceda2c 100644
--- a/sysdeps/unix/sysv/linux/Versions
+++ b/sysdeps/unix/sysv/linux/Versions
@@ -305,6 +305,7 @@ libc {
     fsopen;
     fspick;
     move_mount;
+    mount_setattr;
     open_tree;
     pidfd_open;
     pidfd_getfd;
diff --git a/sysdeps/unix/sysv/linux/aarch64/libc.abilist b/sysdeps/unix/sysv/linux/aarch64/libc.abilist
index 2a666d8135..16d34b55c6 100644
--- a/sysdeps/unix/sysv/linux/aarch64/libc.abilist
+++ b/sysdeps/unix/sysv/linux/aarch64/libc.abilist
@@ -2620,6 +2620,7 @@ GLIBC_2.36 fsconfig F
 GLIBC_2.36 fsmount F
 GLIBC_2.36 fsopen F
 GLIBC_2.36 fspick F
+GLIBC_2.36 mount_setattr F
 GLIBC_2.36 move_mount F
 GLIBC_2.36 open_tree F
 GLIBC_2.36 pidfd_getfd F
diff --git a/sysdeps/unix/sysv/linux/alpha/libc.abilist b/sysdeps/unix/sysv/linux/alpha/libc.abilist
index 41bd7c1959..3f794bea0f 100644
--- a/sysdeps/unix/sysv/linux/alpha/libc.abilist
+++ b/sysdeps/unix/sysv/linux/alpha/libc.abilist
@@ -2717,6 +2717,7 @@ GLIBC_2.36 fsconfig F
 GLIBC_2.36 fsmount F
 GLIBC_2.36 fsopen F
 GLIBC_2.36 fspick F
+GLIBC_2.36 mount_setattr F
 GLIBC_2.36 move_mount F
 GLIBC_2.36 open_tree F
 GLIBC_2.36 pidfd_getfd F
diff --git a/sysdeps/unix/sysv/linux/arc/libc.abilist b/sysdeps/unix/sysv/linux/arc/libc.abilist
index 198fdab2f7..072627810c 100644
--- a/sysdeps/unix/sysv/linux/arc/libc.abilist
+++ b/sysdeps/unix/sysv/linux/arc/libc.abilist
@@ -2381,6 +2381,7 @@ GLIBC_2.36 fsconfig F
 GLIBC_2.36 fsmount F
 GLIBC_2.36 fsopen F
 GLIBC_2.36 fspick F
+GLIBC_2.36 mount_setattr F
 GLIBC_2.36 move_mount F
 GLIBC_2.36 open_tree F
 GLIBC_2.36 pidfd_getfd F
diff --git a/sysdeps/unix/sysv/linux/arm/be/libc.abilist b/sysdeps/unix/sysv/linux/arm/be/libc.abilist
index 6fd4e75df2..dbd5f07e6e 100644
--- a/sysdeps/unix/sysv/linux/arm/be/libc.abilist
+++ b/sysdeps/unix/sysv/linux/arm/be/libc.abilist
@@ -500,6 +500,7 @@ GLIBC_2.36 fsconfig F
 GLIBC_2.36 fsmount F
 GLIBC_2.36 fsopen F
 GLIBC_2.36 fspick F
+GLIBC_2.36 mount_setattr F
 GLIBC_2.36 move_mount F
 GLIBC_2.36 open_tree F
 GLIBC_2.36 pidfd_getfd F
diff --git a/sysdeps/unix/sysv/linux/arm/le/libc.abilist b/sysdeps/unix/sysv/linux/arm/le/libc.abilist
index 3ec572b50f..0f02d79faa 100644
--- a/sysdeps/unix/sysv/linux/arm/le/libc.abilist
+++ b/sysdeps/unix/sysv/linux/arm/le/libc.abilist
@@ -497,6 +497,7 @@ GLIBC_2.36 fsconfig F
 GLIBC_2.36 fsmount F
 GLIBC_2.36 fsopen F
 GLIBC_2.36 fspick F
+GLIBC_2.36 mount_setattr F
 GLIBC_2.36 move_mount F
 GLIBC_2.36 open_tree F
 GLIBC_2.36 pidfd_getfd F
diff --git a/sysdeps/unix/sysv/linux/csky/libc.abilist b/sysdeps/unix/sysv/linux/csky/libc.abilist
index 94f3deb3e5..11d3b36a78 100644
--- a/sysdeps/unix/sysv/linux/csky/libc.abilist
+++ b/sysdeps/unix/sysv/linux/csky/libc.abilist
@@ -2656,6 +2656,7 @@ GLIBC_2.36 fsconfig F
 GLIBC_2.36 fsmount F
 GLIBC_2.36 fsopen F
 GLIBC_2.36 fspick F
+GLIBC_2.36 mount_setattr F
 GLIBC_2.36 move_mount F
 GLIBC_2.36 open_tree F
 GLIBC_2.36 pidfd_getfd F
diff --git a/sysdeps/unix/sysv/linux/hppa/libc.abilist b/sysdeps/unix/sysv/linux/hppa/libc.abilist
index a7deaf3e26..5caa1321b1 100644
--- a/sysdeps/unix/sysv/linux/hppa/libc.abilist
+++ b/sysdeps/unix/sysv/linux/hppa/libc.abilist
@@ -2605,6 +2605,7 @@ GLIBC_2.36 fsconfig F
 GLIBC_2.36 fsmount F
 GLIBC_2.36 fsopen F
 GLIBC_2.36 fspick F
+GLIBC_2.36 mount_setattr F
 GLIBC_2.36 move_mount F
 GLIBC_2.36 open_tree F
 GLIBC_2.36 pidfd_getfd F
diff --git a/sysdeps/unix/sysv/linux/i386/libc.abilist b/sysdeps/unix/sysv/linux/i386/libc.abilist
index 5f1a1bc4d0..276d7d5619 100644
--- a/sysdeps/unix/sysv/linux/i386/libc.abilist
+++ b/sysdeps/unix/sysv/linux/i386/libc.abilist
@@ -2789,6 +2789,7 @@ GLIBC_2.36 fsconfig F
 GLIBC_2.36 fsmount F
 GLIBC_2.36 fsopen F
 GLIBC_2.36 fspick F
+GLIBC_2.36 mount_setattr F
 GLIBC_2.36 move_mount F
 GLIBC_2.36 open_tree F
 GLIBC_2.36 pidfd_getfd F
diff --git a/sysdeps/unix/sysv/linux/ia64/libc.abilist b/sysdeps/unix/sysv/linux/ia64/libc.abilist
index 1af8a55836..5e2249518e 100644
--- a/sysdeps/unix/sysv/linux/ia64/libc.abilist
+++ b/sysdeps/unix/sysv/linux/ia64/libc.abilist
@@ -2555,6 +2555,7 @@ GLIBC_2.36 fsconfig F
 GLIBC_2.36 fsmount F
 GLIBC_2.36 fsopen F
 GLIBC_2.36 fspick F
+GLIBC_2.36 mount_setattr F
 GLIBC_2.36 move_mount F
 GLIBC_2.36 open_tree F
 GLIBC_2.36 pidfd_getfd F
diff --git a/sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist b/sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist
index ad3a4b4008..802469a5b9 100644
--- a/sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist
+++ b/sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist
@@ -501,6 +501,7 @@ GLIBC_2.36 fsconfig F
 GLIBC_2.36 fsmount F
 GLIBC_2.36 fsopen F
 GLIBC_2.36 fspick F
+GLIBC_2.36 mount_setattr F
 GLIBC_2.36 move_mount F
 GLIBC_2.36 open_tree F
 GLIBC_2.36 pidfd_getfd F
diff --git a/sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist b/sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist
index 87e76f33a0..2f949397df 100644
--- a/sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist
+++ b/sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist
@@ -2732,6 +2732,7 @@ GLIBC_2.36 fsconfig F
 GLIBC_2.36 fsmount F
 GLIBC_2.36 fsopen F
 GLIBC_2.36 fspick F
+GLIBC_2.36 mount_setattr F
 GLIBC_2.36 move_mount F
 GLIBC_2.36 open_tree F
 GLIBC_2.36 pidfd_getfd F
diff --git a/sysdeps/unix/sysv/linux/microblaze/be/libc.abilist b/sysdeps/unix/sysv/linux/microblaze/be/libc.abilist
index 73df42c7aa..f63cc9cd4c 100644
--- a/sysdeps/unix/sysv/linux/microblaze/be/libc.abilist
+++ b/sysdeps/unix/sysv/linux/microblaze/be/libc.abilist
@@ -2705,6 +2705,7 @@ GLIBC_2.36 fsconfig F
 GLIBC_2.36 fsmount F
 GLIBC_2.36 fsopen F
 GLIBC_2.36 fspick F
+GLIBC_2.36 mount_setattr F
 GLIBC_2.36 move_mount F
 GLIBC_2.36 open_tree F
 GLIBC_2.36 pidfd_getfd F
diff --git a/sysdeps/unix/sysv/linux/microblaze/le/libc.abilist b/sysdeps/unix/sysv/linux/microblaze/le/libc.abilist
index 5c2e936547..88d2b707f9 100644
--- a/sysdeps/unix/sysv/linux/microblaze/le/libc.abilist
+++ b/sysdeps/unix/sysv/linux/microblaze/le/libc.abilist
@@ -2702,6 +2702,7 @@ GLIBC_2.36 fsconfig F
 GLIBC_2.36 fsmount F
 GLIBC_2.36 fsopen F
 GLIBC_2.36 fspick F
+GLIBC_2.36 mount_setattr F
 GLIBC_2.36 move_mount F
 GLIBC_2.36 open_tree F
 GLIBC_2.36 pidfd_getfd F
diff --git a/sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist b/sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist
index 45919d27d6..6c2bc0ee78 100644
--- a/sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist
+++ b/sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist
@@ -2697,6 +2697,7 @@ GLIBC_2.36 fsconfig F
 GLIBC_2.36 fsmount F
 GLIBC_2.36 fsopen F
 GLIBC_2.36 fspick F
+GLIBC_2.36 mount_setattr F
 GLIBC_2.36 move_mount F
 GLIBC_2.36 open_tree F
 GLIBC_2.36 pidfd_getfd F
diff --git a/sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist b/sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist
index 8321b0efac..09c9980d95 100644
--- a/sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist
+++ b/sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist
@@ -2695,6 +2695,7 @@ GLIBC_2.36 fsconfig F
 GLIBC_2.36 fsmount F
 GLIBC_2.36 fsopen F
 GLIBC_2.36 fspick F
+GLIBC_2.36 mount_setattr F
 GLIBC_2.36 move_mount F
 GLIBC_2.36 open_tree F
 GLIBC_2.36 pidfd_getfd F
diff --git a/sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist b/sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist
index c7198646d2..763920ea8f 100644
--- a/sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist
+++ b/sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist
@@ -2703,6 +2703,7 @@ GLIBC_2.36 fsconfig F
 GLIBC_2.36 fsmount F
 GLIBC_2.36 fsopen F
 GLIBC_2.36 fspick F
+GLIBC_2.36 mount_setattr F
 GLIBC_2.36 move_mount F
 GLIBC_2.36 open_tree F
 GLIBC_2.36 pidfd_getfd F
diff --git a/sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist b/sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist
index 8b3cca2a54..36d30558c1 100644
--- a/sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist
+++ b/sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist
@@ -2606,6 +2606,7 @@ GLIBC_2.36 fsconfig F
 GLIBC_2.36 fsmount F
 GLIBC_2.36 fsopen F
 GLIBC_2.36 fspick F
+GLIBC_2.36 mount_setattr F
 GLIBC_2.36 move_mount F
 GLIBC_2.36 open_tree F
 GLIBC_2.36 pidfd_getfd F
diff --git a/sysdeps/unix/sysv/linux/nios2/libc.abilist b/sysdeps/unix/sysv/linux/nios2/libc.abilist
index 2f1595bb35..e4383fe464 100644
--- a/sysdeps/unix/sysv/linux/nios2/libc.abilist
+++ b/sysdeps/unix/sysv/linux/nios2/libc.abilist
@@ -2744,6 +2744,7 @@ GLIBC_2.36 fsconfig F
 GLIBC_2.36 fsmount F
 GLIBC_2.36 fsopen F
 GLIBC_2.36 fspick F
+GLIBC_2.36 mount_setattr F
 GLIBC_2.36 move_mount F
 GLIBC_2.36 open_tree F
 GLIBC_2.36 pidfd_getfd F
diff --git a/sysdeps/unix/sysv/linux/or1k/libc.abilist b/sysdeps/unix/sysv/linux/or1k/libc.abilist
index d1d4e12d12..735a8eea7e 100644
--- a/sysdeps/unix/sysv/linux/or1k/libc.abilist
+++ b/sysdeps/unix/sysv/linux/or1k/libc.abilist
@@ -2127,6 +2127,7 @@ GLIBC_2.36 fsconfig F
 GLIBC_2.36 fsmount F
 GLIBC_2.36 fsopen F
 GLIBC_2.36 fspick F
+GLIBC_2.36 mount_setattr F
 GLIBC_2.36 move_mount F
 GLIBC_2.36 open_tree F
 GLIBC_2.36 pidfd_getfd F
diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist b/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist
index 50c9fadaf0..715dd31afe 100644
--- a/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist
+++ b/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist
@@ -2759,6 +2759,7 @@ GLIBC_2.36 fsconfig F
 GLIBC_2.36 fsmount F
 GLIBC_2.36 fsopen F
 GLIBC_2.36 fspick F
+GLIBC_2.36 mount_setattr F
 GLIBC_2.36 move_mount F
 GLIBC_2.36 open_tree F
 GLIBC_2.36 pidfd_getfd F
diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist b/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist
index 8998a560cd..ac4b69e5fc 100644
--- a/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist
+++ b/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist
@@ -2792,6 +2792,7 @@ GLIBC_2.36 fsconfig F
 GLIBC_2.36 fsmount F
 GLIBC_2.36 fsopen F
 GLIBC_2.36 fspick F
+GLIBC_2.36 mount_setattr F
 GLIBC_2.36 move_mount F
 GLIBC_2.36 open_tree F
 GLIBC_2.36 pidfd_getfd F
diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc64/be/libc.abilist b/sysdeps/unix/sysv/linux/powerpc/powerpc64/be/libc.abilist
index bca46bdbe5..fd42f1bc11 100644
--- a/sysdeps/unix/sysv/linux/powerpc/powerpc64/be/libc.abilist
+++ b/sysdeps/unix/sysv/linux/powerpc/powerpc64/be/libc.abilist
@@ -2514,6 +2514,7 @@ GLIBC_2.36 fsconfig F
 GLIBC_2.36 fsmount F
 GLIBC_2.36 fsopen F
 GLIBC_2.36 fspick F
+GLIBC_2.36 mount_setattr F
 GLIBC_2.36 move_mount F
 GLIBC_2.36 open_tree F
 GLIBC_2.36 pidfd_getfd F
diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc64/le/libc.abilist b/sysdeps/unix/sysv/linux/powerpc/powerpc64/le/libc.abilist
index 97f6d96cd6..24688916dd 100644
--- a/sysdeps/unix/sysv/linux/powerpc/powerpc64/le/libc.abilist
+++ b/sysdeps/unix/sysv/linux/powerpc/powerpc64/le/libc.abilist
@@ -2816,6 +2816,7 @@ GLIBC_2.36 fsconfig F
 GLIBC_2.36 fsmount F
 GLIBC_2.36 fsopen F
 GLIBC_2.36 fspick F
+GLIBC_2.36 mount_setattr F
 GLIBC_2.36 move_mount F
 GLIBC_2.36 open_tree F
 GLIBC_2.36 pidfd_getfd F
diff --git a/sysdeps/unix/sysv/linux/riscv/rv32/libc.abilist b/sysdeps/unix/sysv/linux/riscv/rv32/libc.abilist
index f588745b28..536eddf9f1 100644
--- a/sysdeps/unix/sysv/linux/riscv/rv32/libc.abilist
+++ b/sysdeps/unix/sysv/linux/riscv/rv32/libc.abilist
@@ -2383,6 +2383,7 @@ GLIBC_2.36 fsconfig F
 GLIBC_2.36 fsmount F
 GLIBC_2.36 fsopen F
 GLIBC_2.36 fspick F
+GLIBC_2.36 mount_setattr F
 GLIBC_2.36 move_mount F
 GLIBC_2.36 open_tree F
 GLIBC_2.36 pidfd_getfd F
diff --git a/sysdeps/unix/sysv/linux/riscv/rv64/libc.abilist b/sysdeps/unix/sysv/linux/riscv/rv64/libc.abilist
index 1acf8a4c54..214b4f1c87 100644
--- a/sysdeps/unix/sysv/linux/riscv/rv64/libc.abilist
+++ b/sysdeps/unix/sysv/linux/riscv/rv64/libc.abilist
@@ -2583,6 +2583,7 @@ GLIBC_2.36 fsconfig F
 GLIBC_2.36 fsmount F
 GLIBC_2.36 fsopen F
 GLIBC_2.36 fspick F
+GLIBC_2.36 mount_setattr F
 GLIBC_2.36 move_mount F
 GLIBC_2.36 open_tree F
 GLIBC_2.36 pidfd_getfd F
diff --git a/sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist b/sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist
index 7c8b410f1a..bd738a4eb8 100644
--- a/sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist
+++ b/sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist
@@ -2757,6 +2757,7 @@ GLIBC_2.36 fsconfig F
 GLIBC_2.36 fsmount F
 GLIBC_2.36 fsopen F
 GLIBC_2.36 fspick F
+GLIBC_2.36 mount_setattr F
 GLIBC_2.36 move_mount F
 GLIBC_2.36 open_tree F
 GLIBC_2.36 pidfd_getfd F
diff --git a/sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist b/sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist
index ba9317ee01..170361236a 100644
--- a/sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist
+++ b/sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist
@@ -2551,6 +2551,7 @@ GLIBC_2.36 fsconfig F
 GLIBC_2.36 fsmount F
 GLIBC_2.36 fsopen F
 GLIBC_2.36 fspick F
+GLIBC_2.36 mount_setattr F
 GLIBC_2.36 move_mount F
 GLIBC_2.36 open_tree F
 GLIBC_2.36 pidfd_getfd F
diff --git a/sysdeps/unix/sysv/linux/sh/be/libc.abilist b/sysdeps/unix/sysv/linux/sh/be/libc.abilist
index 75fa8834f1..88fcd03300 100644
--- a/sysdeps/unix/sysv/linux/sh/be/libc.abilist
+++ b/sysdeps/unix/sysv/linux/sh/be/libc.abilist
@@ -2612,6 +2612,7 @@ GLIBC_2.36 fsconfig F
 GLIBC_2.36 fsmount F
 GLIBC_2.36 fsopen F
 GLIBC_2.36 fspick F
+GLIBC_2.36 mount_setattr F
 GLIBC_2.36 move_mount F
 GLIBC_2.36 open_tree F
 GLIBC_2.36 pidfd_getfd F
diff --git a/sysdeps/unix/sysv/linux/sh/le/libc.abilist b/sysdeps/unix/sysv/linux/sh/le/libc.abilist
index 4a4f8ff33f..f1115ef46d 100644
--- a/sysdeps/unix/sysv/linux/sh/le/libc.abilist
+++ b/sysdeps/unix/sysv/linux/sh/le/libc.abilist
@@ -2609,6 +2609,7 @@ GLIBC_2.36 fsconfig F
 GLIBC_2.36 fsmount F
 GLIBC_2.36 fsopen F
 GLIBC_2.36 fspick F
+GLIBC_2.36 mount_setattr F
 GLIBC_2.36 move_mount F
 GLIBC_2.36 open_tree F
 GLIBC_2.36 pidfd_getfd F
diff --git a/sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist b/sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist
index d26671dba8..6063da1acf 100644
--- a/sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist
+++ b/sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist
@@ -2752,6 +2752,7 @@ GLIBC_2.36 fsconfig F
 GLIBC_2.36 fsmount F
 GLIBC_2.36 fsopen F
 GLIBC_2.36 fspick F
+GLIBC_2.36 mount_setattr F
 GLIBC_2.36 move_mount F
 GLIBC_2.36 open_tree F
 GLIBC_2.36 pidfd_getfd F
diff --git a/sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist b/sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist
index 16c2a98ab5..780d2c0987 100644
--- a/sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist
+++ b/sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist
@@ -2578,6 +2578,7 @@ GLIBC_2.36 fsconfig F
 GLIBC_2.36 fsmount F
 GLIBC_2.36 fsopen F
 GLIBC_2.36 fspick F
+GLIBC_2.36 mount_setattr F
 GLIBC_2.36 move_mount F
 GLIBC_2.36 open_tree F
 GLIBC_2.36 pidfd_getfd F
diff --git a/sysdeps/unix/sysv/linux/sys/mount.h b/sysdeps/unix/sysv/linux/sys/mount.h
index 534d05b3f5..f965986ba8 100644
--- a/sysdeps/unix/sysv/linux/sys/mount.h
+++ b/sysdeps/unix/sysv/linux/sys/mount.h
@@ -23,6 +23,8 @@
 
 #include <fcntl.h>
 #include <features.h>
+#include <stdint.h>
+#include <stddef.h>
 #include <sys/ioctl.h>
 
 #define BLOCK_SIZE	1024
@@ -155,6 +157,17 @@ enum
 #define MOUNT_ATTR_NOSYMFOLLOW  0x00200000 /* Do not follow symlinks.  */
 
 
+/* For mount_setattr.  */
+struct mount_attr
+{
+  uint64_t attr_set;
+  uint64_t attr_clr;
+  uint64_t propagation;
+  uint64_t userns_fd;
+};
+
+#define MOUNT_ATTR_SIZE_VER0    32 /* sizeof first published struct */
+
 /* move_mount flags.  */
 #define MOVE_MOUNT_F_SYMLINKS   0x00000001 /* Follow symlinks on from path */
 #define MOVE_MOUNT_F_AUTOMOUNTS 0x00000002 /* Follow automounts on from path */
@@ -240,6 +253,15 @@ extern int fspick (int __dfd, const char *__path, unsigned int __flags)
 extern int open_tree (int __dfd, const char *__filename, unsigned int __flags)
   __THROW;
 
+/* Change the mount properties of the mount or an entire mount tree.  If
+   PATH is a relative pathname, then it is interpreted relative to the
+   directory referred to by the file descriptor dirfd.  Otherwise if DFD is
+   the special value AT_FDCWD then PATH is interpreted relative to the current
+   working directory of the calling process.  */
+extern int mount_setattr (int __dfd, const char *__path, unsigned int __flags,
+			  struct mount_attr *__uattr, size_t __usize)
+  __THROW;
+
 __END_DECLS
 
 #endif /* _SYS_MOUNT_H */
diff --git a/sysdeps/unix/sysv/linux/syscalls.list b/sysdeps/unix/sysv/linux/syscalls.list
index 493e68b834..6420049e8b 100644
--- a/sysdeps/unix/sysv/linux/syscalls.list
+++ b/sysdeps/unix/sysv/linux/syscalls.list
@@ -39,6 +39,7 @@ mincore		-	mincore		i:aUV	mincore
 mlock		-	mlock		i:bU	mlock
 mlockall	-	mlockall	i:i	mlockall
 mount		EXTRA	mount		i:sssUp	__mount	mount
+mount_setattr	EXTRA	mount_setattr	i:isUpU	mount_setattr
 move_mount	EXTRA	move_mount	i:isisU	move_mount
 munlock		-	munlock		i:aU	munlock
 munlockall	-	munlockall	i:	munlockall
diff --git a/sysdeps/unix/sysv/linux/tst-mount-consts.py b/sysdeps/unix/sysv/linux/tst-mount-consts.py
index 82ab18d963..a62f803123 100755
--- a/sysdeps/unix/sysv/linux/tst-mount-consts.py
+++ b/sysdeps/unix/sysv/linux/tst-mount-consts.py
@@ -56,7 +56,9 @@ def main():
         check('FSMOUNT_.*'),
         # MOVE_MOUNT__MASK may vary depending of the kernel version.
         check('MOVE_MOUNT_.*', 'MOVE_MOUNT__MASK'),
-        check('OPEN_TREE_*'))
+        check('OPEN_TREE_*'),
+        # MOUNT_ATTR_SIZE_VER0 is used for mount_setattr.
+        check('MOUNT_ATTR_.*', 'MOUNT_ATTR_SIZE_VER0'))
     sys.exit(status)
 
 if __name__ == '__main__':
diff --git a/sysdeps/unix/sysv/linux/tst-mount.c b/sysdeps/unix/sysv/linux/tst-mount.c
index 12a665f950..502d7e3433 100644
--- a/sysdeps/unix/sysv/linux/tst-mount.c
+++ b/sysdeps/unix/sysv/linux/tst-mount.c
@@ -23,6 +23,9 @@
 #include <sys/wait.h>
 #include <sys/mount.h>
 
+_Static_assert (sizeof (struct mount_attr) == MOUNT_ATTR_SIZE_VER0,
+		"sizeof (struct mount_attr) != MOUNT_ATTR_SIZE_VER0");
+
 static void
 subprocess (void)
 {
@@ -67,10 +70,31 @@ subprocess (void)
 
   TEST_COMPARE (open_tree (AT_FDCWD, "", 0), -1);
   TEST_COMPARE (errno, ENOENT);
+  int fd_tree = open_tree (AT_FDCWD, "/tmp",
+			   OPEN_TREE_CLONE | OPEN_TREE_CLOEXEC);
+  TEST_VERIFY (fd_tree != -1);
+
   {
-    int fd_tree = open_tree (AT_FDCWD, "/tmp",
-			     OPEN_TREE_CLONE | OPEN_TREE_CLOEXEC);
-    TEST_VERIFY (fd_tree != -1);
+    struct mount_attr attr =
+    {
+      .attr_set = MOUNT_ATTR_RDONLY,
+    };
+     mount_setattr (fd_tree, "", AT_EMPTY_PATH, &attr,
+			   sizeof (attr));
+    int r = mount_setattr (fd_tree, "", AT_EMPTY_PATH, &attr,
+			   sizeof (attr));
+    /* New mount API was added on 5.1, but mount_setattr on 5.12.  */
+    if (r == -1)
+      TEST_COMPARE (errno, ENOSYS);
+    else
+      {
+	TEST_COMPARE (mount_setattr (-1, "", AT_EMPTY_PATH, &attr,
+				     sizeof (attr)), -1);
+	TEST_COMPARE (errno, EBADF);
+	TEST_COMPARE (mount_setattr (fd_tree, "", AT_EMPTY_PATH, &attr,
+				     sizeof (attr) - 8), -1);
+	TEST_COMPARE (errno, EINVAL);
+      }
   }
 
   _exit (0);
diff --git a/sysdeps/unix/sysv/linux/x86_64/64/libc.abilist b/sysdeps/unix/sysv/linux/x86_64/64/libc.abilist
index bd7c4ef801..56cad609fe 100644
--- a/sysdeps/unix/sysv/linux/x86_64/64/libc.abilist
+++ b/sysdeps/unix/sysv/linux/x86_64/64/libc.abilist
@@ -2529,6 +2529,7 @@ GLIBC_2.36 fsconfig F
 GLIBC_2.36 fsmount F
 GLIBC_2.36 fsopen F
 GLIBC_2.36 fspick F
+GLIBC_2.36 mount_setattr F
 GLIBC_2.36 move_mount F
 GLIBC_2.36 open_tree F
 GLIBC_2.36 pidfd_getfd F
diff --git a/sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist b/sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist
index 1c7f60b41a..2ed242a62d 100644
--- a/sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist
+++ b/sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist
@@ -2635,6 +2635,7 @@ GLIBC_2.36 fsconfig F
 GLIBC_2.36 fsmount F
 GLIBC_2.36 fsopen F
 GLIBC_2.36 fspick F
+GLIBC_2.36 mount_setattr F
 GLIBC_2.36 move_mount F
 GLIBC_2.36 open_tree F
 GLIBC_2.36 pidfd_getfd F
-- 
2.34.1


^ permalink raw reply	[flat|nested] 26+ messages in thread

* Re: [PATCH v7 5/5] linux: Add mount_setattr
  2022-06-24 19:59 ` [PATCH v7 5/5] linux: Add mount_setattr Adhemerval Zanella
@ 2022-07-04 21:51   ` Carlos O'Donell
  2022-07-06  9:25     ` Andreas Schwab
  0 siblings, 1 reply; 26+ messages in thread
From: Carlos O'Donell @ 2022-07-04 21:51 UTC (permalink / raw)
  To: Adhemerval Zanella, libc-alpha

On 6/24/22 15:59, Adhemerval Zanella wrote:
> It was added on Linux 5.12 (2a1867219c7b27f928e2545782b86daaf9ad50bd)
> to allow change the properties of a mount or a mount tree using file
> descriptors which the new mount api is based on.
> 
> Checked on x86_64-linux-gnu.

LGTM. Matches kernel API.

Reviewed-by: Carlos O'Donell <carlos@redhat.com>

> ---
>  NEWS                                          |  8 ++---
>  sysdeps/unix/sysv/linux/Versions              |  1 +
>  sysdeps/unix/sysv/linux/aarch64/libc.abilist  |  1 +
>  sysdeps/unix/sysv/linux/alpha/libc.abilist    |  1 +
>  sysdeps/unix/sysv/linux/arc/libc.abilist      |  1 +
>  sysdeps/unix/sysv/linux/arm/be/libc.abilist   |  1 +
>  sysdeps/unix/sysv/linux/arm/le/libc.abilist   |  1 +
>  sysdeps/unix/sysv/linux/csky/libc.abilist     |  1 +
>  sysdeps/unix/sysv/linux/hppa/libc.abilist     |  1 +
>  sysdeps/unix/sysv/linux/i386/libc.abilist     |  1 +
>  sysdeps/unix/sysv/linux/ia64/libc.abilist     |  1 +
>  .../sysv/linux/m68k/coldfire/libc.abilist     |  1 +
>  .../unix/sysv/linux/m68k/m680x0/libc.abilist  |  1 +
>  .../sysv/linux/microblaze/be/libc.abilist     |  1 +
>  .../sysv/linux/microblaze/le/libc.abilist     |  1 +
>  .../sysv/linux/mips/mips32/fpu/libc.abilist   |  1 +
>  .../sysv/linux/mips/mips32/nofpu/libc.abilist |  1 +
>  .../sysv/linux/mips/mips64/n32/libc.abilist   |  1 +
>  .../sysv/linux/mips/mips64/n64/libc.abilist   |  1 +
>  sysdeps/unix/sysv/linux/nios2/libc.abilist    |  1 +
>  sysdeps/unix/sysv/linux/or1k/libc.abilist     |  1 +
>  .../linux/powerpc/powerpc32/fpu/libc.abilist  |  1 +
>  .../powerpc/powerpc32/nofpu/libc.abilist      |  1 +
>  .../linux/powerpc/powerpc64/be/libc.abilist   |  1 +
>  .../linux/powerpc/powerpc64/le/libc.abilist   |  1 +
>  .../unix/sysv/linux/riscv/rv32/libc.abilist   |  1 +
>  .../unix/sysv/linux/riscv/rv64/libc.abilist   |  1 +
>  .../unix/sysv/linux/s390/s390-32/libc.abilist |  1 +
>  .../unix/sysv/linux/s390/s390-64/libc.abilist |  1 +
>  sysdeps/unix/sysv/linux/sh/be/libc.abilist    |  1 +
>  sysdeps/unix/sysv/linux/sh/le/libc.abilist    |  1 +
>  .../sysv/linux/sparc/sparc32/libc.abilist     |  1 +
>  .../sysv/linux/sparc/sparc64/libc.abilist     |  1 +
>  sysdeps/unix/sysv/linux/sys/mount.h           | 22 ++++++++++++++
>  sysdeps/unix/sysv/linux/syscalls.list         |  1 +
>  sysdeps/unix/sysv/linux/tst-mount-consts.py   |  4 ++-
>  sysdeps/unix/sysv/linux/tst-mount.c           | 30 +++++++++++++++++--
>  .../unix/sysv/linux/x86_64/64/libc.abilist    |  1 +
>  .../unix/sysv/linux/x86_64/x32/libc.abilist   |  1 +
>  39 files changed, 91 insertions(+), 8 deletions(-)
> 
> diff --git a/NEWS b/NEWS
> index f52718aa77..3fe7c29644 100644
> --- a/NEWS
> +++ b/NEWS
> @@ -41,10 +41,10 @@ Major new features:
>    have adverse impact.  It is incompatible with EDNS0 usage and DNSSEC
>    validation by applications.
>  
> -* On Linux, the fsopen, fsmount, move_mount, fsconfig, fspick, and open_tree
> -  functions have been added.  They are part of the new Linux kernel mount
> -  APIs that allow applications to more flexibly configure and operate on
> -  filesystem mounts.  The new mount APIs are specifically designed to work
> +* On Linux, the fsopen, fsmount, move_mount, fsconfig, fspick, open_tree,
> +  and mount_setattr have been added.  They are part of the new Linux kernel
> +  mount APIs that allow applications to more flexibly configure and operate
> +  on filesystem mounts.  The new mount APIs are specifically designed to work

OK.

>    with namespaces.
>  
>  Deprecated and removed features, and other changes affecting compatibility:
> diff --git a/sysdeps/unix/sysv/linux/Versions b/sysdeps/unix/sysv/linux/Versions
> index b70530ef40..65d2ceda2c 100644
> --- a/sysdeps/unix/sysv/linux/Versions
> +++ b/sysdeps/unix/sysv/linux/Versions
> @@ -305,6 +305,7 @@ libc {
>      fsopen;
>      fspick;
>      move_mount;
> +    mount_setattr;

OK.

>      open_tree;
>      pidfd_open;
>      pidfd_getfd;
> diff --git a/sysdeps/unix/sysv/linux/aarch64/libc.abilist b/sysdeps/unix/sysv/linux/aarch64/libc.abilist
> index 2a666d8135..16d34b55c6 100644
> --- a/sysdeps/unix/sysv/linux/aarch64/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/aarch64/libc.abilist
> @@ -2620,6 +2620,7 @@ GLIBC_2.36 fsconfig F
>  GLIBC_2.36 fsmount F
>  GLIBC_2.36 fsopen F
>  GLIBC_2.36 fspick F
> +GLIBC_2.36 mount_setattr F
>  GLIBC_2.36 move_mount F
>  GLIBC_2.36 open_tree F
>  GLIBC_2.36 pidfd_getfd F
> diff --git a/sysdeps/unix/sysv/linux/alpha/libc.abilist b/sysdeps/unix/sysv/linux/alpha/libc.abilist
> index 41bd7c1959..3f794bea0f 100644
> --- a/sysdeps/unix/sysv/linux/alpha/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/alpha/libc.abilist
> @@ -2717,6 +2717,7 @@ GLIBC_2.36 fsconfig F
>  GLIBC_2.36 fsmount F
>  GLIBC_2.36 fsopen F
>  GLIBC_2.36 fspick F
> +GLIBC_2.36 mount_setattr F
>  GLIBC_2.36 move_mount F
>  GLIBC_2.36 open_tree F
>  GLIBC_2.36 pidfd_getfd F
> diff --git a/sysdeps/unix/sysv/linux/arc/libc.abilist b/sysdeps/unix/sysv/linux/arc/libc.abilist
> index 198fdab2f7..072627810c 100644
> --- a/sysdeps/unix/sysv/linux/arc/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/arc/libc.abilist
> @@ -2381,6 +2381,7 @@ GLIBC_2.36 fsconfig F
>  GLIBC_2.36 fsmount F
>  GLIBC_2.36 fsopen F
>  GLIBC_2.36 fspick F
> +GLIBC_2.36 mount_setattr F
>  GLIBC_2.36 move_mount F
>  GLIBC_2.36 open_tree F
>  GLIBC_2.36 pidfd_getfd F
> diff --git a/sysdeps/unix/sysv/linux/arm/be/libc.abilist b/sysdeps/unix/sysv/linux/arm/be/libc.abilist
> index 6fd4e75df2..dbd5f07e6e 100644
> --- a/sysdeps/unix/sysv/linux/arm/be/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/arm/be/libc.abilist
> @@ -500,6 +500,7 @@ GLIBC_2.36 fsconfig F
>  GLIBC_2.36 fsmount F
>  GLIBC_2.36 fsopen F
>  GLIBC_2.36 fspick F
> +GLIBC_2.36 mount_setattr F
>  GLIBC_2.36 move_mount F
>  GLIBC_2.36 open_tree F
>  GLIBC_2.36 pidfd_getfd F
> diff --git a/sysdeps/unix/sysv/linux/arm/le/libc.abilist b/sysdeps/unix/sysv/linux/arm/le/libc.abilist
> index 3ec572b50f..0f02d79faa 100644
> --- a/sysdeps/unix/sysv/linux/arm/le/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/arm/le/libc.abilist
> @@ -497,6 +497,7 @@ GLIBC_2.36 fsconfig F
>  GLIBC_2.36 fsmount F
>  GLIBC_2.36 fsopen F
>  GLIBC_2.36 fspick F
> +GLIBC_2.36 mount_setattr F
>  GLIBC_2.36 move_mount F
>  GLIBC_2.36 open_tree F
>  GLIBC_2.36 pidfd_getfd F
> diff --git a/sysdeps/unix/sysv/linux/csky/libc.abilist b/sysdeps/unix/sysv/linux/csky/libc.abilist
> index 94f3deb3e5..11d3b36a78 100644
> --- a/sysdeps/unix/sysv/linux/csky/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/csky/libc.abilist
> @@ -2656,6 +2656,7 @@ GLIBC_2.36 fsconfig F
>  GLIBC_2.36 fsmount F
>  GLIBC_2.36 fsopen F
>  GLIBC_2.36 fspick F
> +GLIBC_2.36 mount_setattr F
>  GLIBC_2.36 move_mount F
>  GLIBC_2.36 open_tree F
>  GLIBC_2.36 pidfd_getfd F
> diff --git a/sysdeps/unix/sysv/linux/hppa/libc.abilist b/sysdeps/unix/sysv/linux/hppa/libc.abilist
> index a7deaf3e26..5caa1321b1 100644
> --- a/sysdeps/unix/sysv/linux/hppa/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/hppa/libc.abilist
> @@ -2605,6 +2605,7 @@ GLIBC_2.36 fsconfig F
>  GLIBC_2.36 fsmount F
>  GLIBC_2.36 fsopen F
>  GLIBC_2.36 fspick F
> +GLIBC_2.36 mount_setattr F
>  GLIBC_2.36 move_mount F
>  GLIBC_2.36 open_tree F
>  GLIBC_2.36 pidfd_getfd F
> diff --git a/sysdeps/unix/sysv/linux/i386/libc.abilist b/sysdeps/unix/sysv/linux/i386/libc.abilist
> index 5f1a1bc4d0..276d7d5619 100644
> --- a/sysdeps/unix/sysv/linux/i386/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/i386/libc.abilist
> @@ -2789,6 +2789,7 @@ GLIBC_2.36 fsconfig F
>  GLIBC_2.36 fsmount F
>  GLIBC_2.36 fsopen F
>  GLIBC_2.36 fspick F
> +GLIBC_2.36 mount_setattr F
>  GLIBC_2.36 move_mount F
>  GLIBC_2.36 open_tree F
>  GLIBC_2.36 pidfd_getfd F
> diff --git a/sysdeps/unix/sysv/linux/ia64/libc.abilist b/sysdeps/unix/sysv/linux/ia64/libc.abilist
> index 1af8a55836..5e2249518e 100644
> --- a/sysdeps/unix/sysv/linux/ia64/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/ia64/libc.abilist
> @@ -2555,6 +2555,7 @@ GLIBC_2.36 fsconfig F
>  GLIBC_2.36 fsmount F
>  GLIBC_2.36 fsopen F
>  GLIBC_2.36 fspick F
> +GLIBC_2.36 mount_setattr F
>  GLIBC_2.36 move_mount F
>  GLIBC_2.36 open_tree F
>  GLIBC_2.36 pidfd_getfd F
> diff --git a/sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist b/sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist
> index ad3a4b4008..802469a5b9 100644
> --- a/sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist
> @@ -501,6 +501,7 @@ GLIBC_2.36 fsconfig F
>  GLIBC_2.36 fsmount F
>  GLIBC_2.36 fsopen F
>  GLIBC_2.36 fspick F
> +GLIBC_2.36 mount_setattr F
>  GLIBC_2.36 move_mount F
>  GLIBC_2.36 open_tree F
>  GLIBC_2.36 pidfd_getfd F
> diff --git a/sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist b/sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist
> index 87e76f33a0..2f949397df 100644
> --- a/sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist
> @@ -2732,6 +2732,7 @@ GLIBC_2.36 fsconfig F
>  GLIBC_2.36 fsmount F
>  GLIBC_2.36 fsopen F
>  GLIBC_2.36 fspick F
> +GLIBC_2.36 mount_setattr F
>  GLIBC_2.36 move_mount F
>  GLIBC_2.36 open_tree F
>  GLIBC_2.36 pidfd_getfd F
> diff --git a/sysdeps/unix/sysv/linux/microblaze/be/libc.abilist b/sysdeps/unix/sysv/linux/microblaze/be/libc.abilist
> index 73df42c7aa..f63cc9cd4c 100644
> --- a/sysdeps/unix/sysv/linux/microblaze/be/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/microblaze/be/libc.abilist
> @@ -2705,6 +2705,7 @@ GLIBC_2.36 fsconfig F
>  GLIBC_2.36 fsmount F
>  GLIBC_2.36 fsopen F
>  GLIBC_2.36 fspick F
> +GLIBC_2.36 mount_setattr F
>  GLIBC_2.36 move_mount F
>  GLIBC_2.36 open_tree F
>  GLIBC_2.36 pidfd_getfd F
> diff --git a/sysdeps/unix/sysv/linux/microblaze/le/libc.abilist b/sysdeps/unix/sysv/linux/microblaze/le/libc.abilist
> index 5c2e936547..88d2b707f9 100644
> --- a/sysdeps/unix/sysv/linux/microblaze/le/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/microblaze/le/libc.abilist
> @@ -2702,6 +2702,7 @@ GLIBC_2.36 fsconfig F
>  GLIBC_2.36 fsmount F
>  GLIBC_2.36 fsopen F
>  GLIBC_2.36 fspick F
> +GLIBC_2.36 mount_setattr F
>  GLIBC_2.36 move_mount F
>  GLIBC_2.36 open_tree F
>  GLIBC_2.36 pidfd_getfd F
> diff --git a/sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist b/sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist
> index 45919d27d6..6c2bc0ee78 100644
> --- a/sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist
> @@ -2697,6 +2697,7 @@ GLIBC_2.36 fsconfig F
>  GLIBC_2.36 fsmount F
>  GLIBC_2.36 fsopen F
>  GLIBC_2.36 fspick F
> +GLIBC_2.36 mount_setattr F
>  GLIBC_2.36 move_mount F
>  GLIBC_2.36 open_tree F
>  GLIBC_2.36 pidfd_getfd F
> diff --git a/sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist b/sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist
> index 8321b0efac..09c9980d95 100644
> --- a/sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist
> @@ -2695,6 +2695,7 @@ GLIBC_2.36 fsconfig F
>  GLIBC_2.36 fsmount F
>  GLIBC_2.36 fsopen F
>  GLIBC_2.36 fspick F
> +GLIBC_2.36 mount_setattr F
>  GLIBC_2.36 move_mount F
>  GLIBC_2.36 open_tree F
>  GLIBC_2.36 pidfd_getfd F
> diff --git a/sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist b/sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist
> index c7198646d2..763920ea8f 100644
> --- a/sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist
> @@ -2703,6 +2703,7 @@ GLIBC_2.36 fsconfig F
>  GLIBC_2.36 fsmount F
>  GLIBC_2.36 fsopen F
>  GLIBC_2.36 fspick F
> +GLIBC_2.36 mount_setattr F
>  GLIBC_2.36 move_mount F
>  GLIBC_2.36 open_tree F
>  GLIBC_2.36 pidfd_getfd F
> diff --git a/sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist b/sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist
> index 8b3cca2a54..36d30558c1 100644
> --- a/sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist
> @@ -2606,6 +2606,7 @@ GLIBC_2.36 fsconfig F
>  GLIBC_2.36 fsmount F
>  GLIBC_2.36 fsopen F
>  GLIBC_2.36 fspick F
> +GLIBC_2.36 mount_setattr F
>  GLIBC_2.36 move_mount F
>  GLIBC_2.36 open_tree F
>  GLIBC_2.36 pidfd_getfd F
> diff --git a/sysdeps/unix/sysv/linux/nios2/libc.abilist b/sysdeps/unix/sysv/linux/nios2/libc.abilist
> index 2f1595bb35..e4383fe464 100644
> --- a/sysdeps/unix/sysv/linux/nios2/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/nios2/libc.abilist
> @@ -2744,6 +2744,7 @@ GLIBC_2.36 fsconfig F
>  GLIBC_2.36 fsmount F
>  GLIBC_2.36 fsopen F
>  GLIBC_2.36 fspick F
> +GLIBC_2.36 mount_setattr F
>  GLIBC_2.36 move_mount F
>  GLIBC_2.36 open_tree F
>  GLIBC_2.36 pidfd_getfd F
> diff --git a/sysdeps/unix/sysv/linux/or1k/libc.abilist b/sysdeps/unix/sysv/linux/or1k/libc.abilist
> index d1d4e12d12..735a8eea7e 100644
> --- a/sysdeps/unix/sysv/linux/or1k/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/or1k/libc.abilist
> @@ -2127,6 +2127,7 @@ GLIBC_2.36 fsconfig F
>  GLIBC_2.36 fsmount F
>  GLIBC_2.36 fsopen F
>  GLIBC_2.36 fspick F
> +GLIBC_2.36 mount_setattr F
>  GLIBC_2.36 move_mount F
>  GLIBC_2.36 open_tree F
>  GLIBC_2.36 pidfd_getfd F
> diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist b/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist
> index 50c9fadaf0..715dd31afe 100644
> --- a/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist
> @@ -2759,6 +2759,7 @@ GLIBC_2.36 fsconfig F
>  GLIBC_2.36 fsmount F
>  GLIBC_2.36 fsopen F
>  GLIBC_2.36 fspick F
> +GLIBC_2.36 mount_setattr F
>  GLIBC_2.36 move_mount F
>  GLIBC_2.36 open_tree F
>  GLIBC_2.36 pidfd_getfd F
> diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist b/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist
> index 8998a560cd..ac4b69e5fc 100644
> --- a/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist
> @@ -2792,6 +2792,7 @@ GLIBC_2.36 fsconfig F
>  GLIBC_2.36 fsmount F
>  GLIBC_2.36 fsopen F
>  GLIBC_2.36 fspick F
> +GLIBC_2.36 mount_setattr F
>  GLIBC_2.36 move_mount F
>  GLIBC_2.36 open_tree F
>  GLIBC_2.36 pidfd_getfd F
> diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc64/be/libc.abilist b/sysdeps/unix/sysv/linux/powerpc/powerpc64/be/libc.abilist
> index bca46bdbe5..fd42f1bc11 100644
> --- a/sysdeps/unix/sysv/linux/powerpc/powerpc64/be/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/powerpc/powerpc64/be/libc.abilist
> @@ -2514,6 +2514,7 @@ GLIBC_2.36 fsconfig F
>  GLIBC_2.36 fsmount F
>  GLIBC_2.36 fsopen F
>  GLIBC_2.36 fspick F
> +GLIBC_2.36 mount_setattr F
>  GLIBC_2.36 move_mount F
>  GLIBC_2.36 open_tree F
>  GLIBC_2.36 pidfd_getfd F
> diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc64/le/libc.abilist b/sysdeps/unix/sysv/linux/powerpc/powerpc64/le/libc.abilist
> index 97f6d96cd6..24688916dd 100644
> --- a/sysdeps/unix/sysv/linux/powerpc/powerpc64/le/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/powerpc/powerpc64/le/libc.abilist
> @@ -2816,6 +2816,7 @@ GLIBC_2.36 fsconfig F
>  GLIBC_2.36 fsmount F
>  GLIBC_2.36 fsopen F
>  GLIBC_2.36 fspick F
> +GLIBC_2.36 mount_setattr F
>  GLIBC_2.36 move_mount F
>  GLIBC_2.36 open_tree F
>  GLIBC_2.36 pidfd_getfd F
> diff --git a/sysdeps/unix/sysv/linux/riscv/rv32/libc.abilist b/sysdeps/unix/sysv/linux/riscv/rv32/libc.abilist
> index f588745b28..536eddf9f1 100644
> --- a/sysdeps/unix/sysv/linux/riscv/rv32/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/riscv/rv32/libc.abilist
> @@ -2383,6 +2383,7 @@ GLIBC_2.36 fsconfig F
>  GLIBC_2.36 fsmount F
>  GLIBC_2.36 fsopen F
>  GLIBC_2.36 fspick F
> +GLIBC_2.36 mount_setattr F
>  GLIBC_2.36 move_mount F
>  GLIBC_2.36 open_tree F
>  GLIBC_2.36 pidfd_getfd F
> diff --git a/sysdeps/unix/sysv/linux/riscv/rv64/libc.abilist b/sysdeps/unix/sysv/linux/riscv/rv64/libc.abilist
> index 1acf8a4c54..214b4f1c87 100644
> --- a/sysdeps/unix/sysv/linux/riscv/rv64/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/riscv/rv64/libc.abilist
> @@ -2583,6 +2583,7 @@ GLIBC_2.36 fsconfig F
>  GLIBC_2.36 fsmount F
>  GLIBC_2.36 fsopen F
>  GLIBC_2.36 fspick F
> +GLIBC_2.36 mount_setattr F
>  GLIBC_2.36 move_mount F
>  GLIBC_2.36 open_tree F
>  GLIBC_2.36 pidfd_getfd F
> diff --git a/sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist b/sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist
> index 7c8b410f1a..bd738a4eb8 100644
> --- a/sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist
> @@ -2757,6 +2757,7 @@ GLIBC_2.36 fsconfig F
>  GLIBC_2.36 fsmount F
>  GLIBC_2.36 fsopen F
>  GLIBC_2.36 fspick F
> +GLIBC_2.36 mount_setattr F
>  GLIBC_2.36 move_mount F
>  GLIBC_2.36 open_tree F
>  GLIBC_2.36 pidfd_getfd F
> diff --git a/sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist b/sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist
> index ba9317ee01..170361236a 100644
> --- a/sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist
> @@ -2551,6 +2551,7 @@ GLIBC_2.36 fsconfig F
>  GLIBC_2.36 fsmount F
>  GLIBC_2.36 fsopen F
>  GLIBC_2.36 fspick F
> +GLIBC_2.36 mount_setattr F
>  GLIBC_2.36 move_mount F
>  GLIBC_2.36 open_tree F
>  GLIBC_2.36 pidfd_getfd F
> diff --git a/sysdeps/unix/sysv/linux/sh/be/libc.abilist b/sysdeps/unix/sysv/linux/sh/be/libc.abilist
> index 75fa8834f1..88fcd03300 100644
> --- a/sysdeps/unix/sysv/linux/sh/be/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/sh/be/libc.abilist
> @@ -2612,6 +2612,7 @@ GLIBC_2.36 fsconfig F
>  GLIBC_2.36 fsmount F
>  GLIBC_2.36 fsopen F
>  GLIBC_2.36 fspick F
> +GLIBC_2.36 mount_setattr F
>  GLIBC_2.36 move_mount F
>  GLIBC_2.36 open_tree F
>  GLIBC_2.36 pidfd_getfd F
> diff --git a/sysdeps/unix/sysv/linux/sh/le/libc.abilist b/sysdeps/unix/sysv/linux/sh/le/libc.abilist
> index 4a4f8ff33f..f1115ef46d 100644
> --- a/sysdeps/unix/sysv/linux/sh/le/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/sh/le/libc.abilist
> @@ -2609,6 +2609,7 @@ GLIBC_2.36 fsconfig F
>  GLIBC_2.36 fsmount F
>  GLIBC_2.36 fsopen F
>  GLIBC_2.36 fspick F
> +GLIBC_2.36 mount_setattr F
>  GLIBC_2.36 move_mount F
>  GLIBC_2.36 open_tree F
>  GLIBC_2.36 pidfd_getfd F
> diff --git a/sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist b/sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist
> index d26671dba8..6063da1acf 100644
> --- a/sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist
> @@ -2752,6 +2752,7 @@ GLIBC_2.36 fsconfig F
>  GLIBC_2.36 fsmount F
>  GLIBC_2.36 fsopen F
>  GLIBC_2.36 fspick F
> +GLIBC_2.36 mount_setattr F
>  GLIBC_2.36 move_mount F
>  GLIBC_2.36 open_tree F
>  GLIBC_2.36 pidfd_getfd F
> diff --git a/sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist b/sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist
> index 16c2a98ab5..780d2c0987 100644
> --- a/sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist
> @@ -2578,6 +2578,7 @@ GLIBC_2.36 fsconfig F
>  GLIBC_2.36 fsmount F
>  GLIBC_2.36 fsopen F
>  GLIBC_2.36 fspick F
> +GLIBC_2.36 mount_setattr F
>  GLIBC_2.36 move_mount F
>  GLIBC_2.36 open_tree F
>  GLIBC_2.36 pidfd_getfd F
> diff --git a/sysdeps/unix/sysv/linux/sys/mount.h b/sysdeps/unix/sysv/linux/sys/mount.h
> index 534d05b3f5..f965986ba8 100644
> --- a/sysdeps/unix/sysv/linux/sys/mount.h
> +++ b/sysdeps/unix/sysv/linux/sys/mount.h
> @@ -23,6 +23,8 @@
>  
>  #include <fcntl.h>
>  #include <features.h>
> +#include <stdint.h>
> +#include <stddef.h>
>  #include <sys/ioctl.h>
>  
>  #define BLOCK_SIZE	1024
> @@ -155,6 +157,17 @@ enum
>  #define MOUNT_ATTR_NOSYMFOLLOW  0x00200000 /* Do not follow symlinks.  */
>  
>  
> +/* For mount_setattr.  */
> +struct mount_attr
> +{
> +  uint64_t attr_set;
> +  uint64_t attr_clr;
> +  uint64_t propagation;
> +  uint64_t userns_fd;
> +};

OK. Kernel uses __u64, but all names match and uint64_t is appropriate. Matches kernel.

> +
> +#define MOUNT_ATTR_SIZE_VER0    32 /* sizeof first published struct */

OK. Value 32 matches kernel.

> +
>  /* move_mount flags.  */
>  #define MOVE_MOUNT_F_SYMLINKS   0x00000001 /* Follow symlinks on from path */
>  #define MOVE_MOUNT_F_AUTOMOUNTS 0x00000002 /* Follow automounts on from path */
> @@ -240,6 +253,15 @@ extern int fspick (int __dfd, const char *__path, unsigned int __flags)
>  extern int open_tree (int __dfd, const char *__filename, unsigned int __flags)
>    __THROW;
>  
> +/* Change the mount properties of the mount or an entire mount tree.  If
> +   PATH is a relative pathname, then it is interpreted relative to the
> +   directory referred to by the file descriptor dirfd.  Otherwise if DFD is
> +   the special value AT_FDCWD then PATH is interpreted relative to the current
> +   working directory of the calling process.  */
> +extern int mount_setattr (int __dfd, const char *__path, unsigned int __flags,
> +			  struct mount_attr *__uattr, size_t __usize)
> +  __THROW;

OK. Returns int error. 5 arguments. Signature is int, const char *, unsigned int, struct mount_attr *, size_t.
Matches kernel.

> +
>  __END_DECLS
>  
>  #endif /* _SYS_MOUNT_H */
> diff --git a/sysdeps/unix/sysv/linux/syscalls.list b/sysdeps/unix/sysv/linux/syscalls.list
> index 493e68b834..6420049e8b 100644
> --- a/sysdeps/unix/sysv/linux/syscalls.list
> +++ b/sysdeps/unix/sysv/linux/syscalls.list
> @@ -39,6 +39,7 @@ mincore		-	mincore		i:aUV	mincore
>  mlock		-	mlock		i:bU	mlock
>  mlockall	-	mlockall	i:i	mlockall
>  mount		EXTRA	mount		i:sssUp	__mount	mount
> +mount_setattr	EXTRA	mount_setattr	i:isUpU	mount_setattr

OK. i:isUpU.

>  move_mount	EXTRA	move_mount	i:isisU	move_mount
>  munlock		-	munlock		i:aU	munlock
>  munlockall	-	munlockall	i:	munlockall
> diff --git a/sysdeps/unix/sysv/linux/tst-mount-consts.py b/sysdeps/unix/sysv/linux/tst-mount-consts.py
> index 82ab18d963..a62f803123 100755
> --- a/sysdeps/unix/sysv/linux/tst-mount-consts.py
> +++ b/sysdeps/unix/sysv/linux/tst-mount-consts.py
> @@ -56,7 +56,9 @@ def main():
>          check('FSMOUNT_.*'),
>          # MOVE_MOUNT__MASK may vary depending of the kernel version.
>          check('MOVE_MOUNT_.*', 'MOVE_MOUNT__MASK'),
> -        check('OPEN_TREE_*'))
> +        check('OPEN_TREE_*'),
> +        # MOUNT_ATTR_SIZE_VER0 is used for mount_setattr.
> +        check('MOUNT_ATTR_.*', 'MOUNT_ATTR_SIZE_VER0'))

OK. Test all 11 MOUNT_ATTR_.* constants except for MOUNT_ATTR_SIZE_VER0 which may vary.

>      sys.exit(status)
>  
>  if __name__ == '__main__':
> diff --git a/sysdeps/unix/sysv/linux/tst-mount.c b/sysdeps/unix/sysv/linux/tst-mount.c
> index 12a665f950..502d7e3433 100644
> --- a/sysdeps/unix/sysv/linux/tst-mount.c
> +++ b/sysdeps/unix/sysv/linux/tst-mount.c
> @@ -23,6 +23,9 @@
>  #include <sys/wait.h>
>  #include <sys/mount.h>
>  
> +_Static_assert (sizeof (struct mount_attr) == MOUNT_ATTR_SIZE_VER0,
> +		"sizeof (struct mount_attr) != MOUNT_ATTR_SIZE_VER0");

OK. Check that the values match or error out.

> +
>  static void
>  subprocess (void)
>  {
> @@ -67,10 +70,31 @@ subprocess (void)
>  
>    TEST_COMPARE (open_tree (AT_FDCWD, "", 0), -1);
>    TEST_COMPARE (errno, ENOENT);
> +  int fd_tree = open_tree (AT_FDCWD, "/tmp",
> +			   OPEN_TREE_CLONE | OPEN_TREE_CLOEXEC);
> +  TEST_VERIFY (fd_tree != -1);
> +
>    {
> -    int fd_tree = open_tree (AT_FDCWD, "/tmp",
> -			     OPEN_TREE_CLONE | OPEN_TREE_CLOEXEC);
> -    TEST_VERIFY (fd_tree != -1);
> +    struct mount_attr attr =
> +    {
> +      .attr_set = MOUNT_ATTR_RDONLY,
> +    };
> +     mount_setattr (fd_tree, "", AT_EMPTY_PATH, &attr,
> +			   sizeof (attr));
> +    int r = mount_setattr (fd_tree, "", AT_EMPTY_PATH, &attr,
> +			   sizeof (attr));
> +    /* New mount API was added on 5.1, but mount_setattr on 5.12.  */
> +    if (r == -1)
> +      TEST_COMPARE (errno, ENOSYS);

OK.

> +    else
> +      {
> +	TEST_COMPARE (mount_setattr (-1, "", AT_EMPTY_PATH, &attr,
> +				     sizeof (attr)), -1);
> +	TEST_COMPARE (errno, EBADF);

OK. -1 for fd.

> +	TEST_COMPARE (mount_setattr (fd_tree, "", AT_EMPTY_PATH, &attr,
> +				     sizeof (attr) - 8), -1);
> +	TEST_COMPARE (errno, EINVAL);

OK. Invalid.

> +      }
>    }
>  
>    _exit (0);
> diff --git a/sysdeps/unix/sysv/linux/x86_64/64/libc.abilist b/sysdeps/unix/sysv/linux/x86_64/64/libc.abilist
> index bd7c4ef801..56cad609fe 100644
> --- a/sysdeps/unix/sysv/linux/x86_64/64/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/x86_64/64/libc.abilist
> @@ -2529,6 +2529,7 @@ GLIBC_2.36 fsconfig F
>  GLIBC_2.36 fsmount F
>  GLIBC_2.36 fsopen F
>  GLIBC_2.36 fspick F
> +GLIBC_2.36 mount_setattr F
>  GLIBC_2.36 move_mount F
>  GLIBC_2.36 open_tree F
>  GLIBC_2.36 pidfd_getfd F
> diff --git a/sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist b/sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist
> index 1c7f60b41a..2ed242a62d 100644
> --- a/sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist
> @@ -2635,6 +2635,7 @@ GLIBC_2.36 fsconfig F
>  GLIBC_2.36 fsmount F
>  GLIBC_2.36 fsopen F
>  GLIBC_2.36 fspick F
> +GLIBC_2.36 mount_setattr F
>  GLIBC_2.36 move_mount F
>  GLIBC_2.36 open_tree F
>  GLIBC_2.36 pidfd_getfd F


-- 
Cheers,
Carlos.


^ permalink raw reply	[flat|nested] 26+ messages in thread

* Re: [PATCH v7 5/5] linux: Add mount_setattr
  2022-07-04 21:51   ` Carlos O'Donell
@ 2022-07-06  9:25     ` Andreas Schwab
  2022-07-06 12:21       ` Adhemerval Zanella
  0 siblings, 1 reply; 26+ messages in thread
From: Andreas Schwab @ 2022-07-06  9:25 UTC (permalink / raw)
  To: Carlos O'Donell via Libc-alpha

This is causing a conflict with <linux/mount.h>, breaking the build of
gcc.

In file included from /usr/include/linux/fs.h:19,
                 from ../../../../libsanitizer/sanitizer_common/sanitizer_platform_limits_posix.cpp:76:
/usr/include/linux/mount.h:95:6: error: multiple definition of 'enum fsconfig_command'
   95 | enum fsconfig_command {
      |      ^~~~~~~~~~~~~~~~
In file included from ../../../../libsanitizer/sanitizer_common/sanitizer_platform_limits_posix.cpp:63:
/usr/include/sys/mount.h:189:6: note: previous definition here
  189 | enum fsconfig_command
      |      ^~~~~~~~~~~~~~~~
/usr/include/linux/mount.h:129:8: error: redefinition of 'struct mount_attr'
  129 | struct mount_attr {
      |        ^~~~~~~~~~
/usr/include/sys/mount.h:161:8: note: previous definition of 'struct mount_attr'
  161 | struct mount_attr
      |        ^~~~~~~~~~
make[4]: *** [Makefile:617: sanitizer_platform_limits_posix.lo] Error 1

-- 
Andreas Schwab, SUSE Labs, schwab@suse.de
GPG Key fingerprint = 0196 BAD8 1CE9 1970 F4BE  1748 E4D4 88E3 0EEA B9D7
"And now for something completely different."

^ permalink raw reply	[flat|nested] 26+ messages in thread

* Re: [PATCH v7 5/5] linux: Add mount_setattr
  2022-07-06  9:25     ` Andreas Schwab
@ 2022-07-06 12:21       ` Adhemerval Zanella
  2022-07-10  2:28         ` Rudi Heitbaum
                           ` (2 more replies)
  0 siblings, 3 replies; 26+ messages in thread
From: Adhemerval Zanella @ 2022-07-06 12:21 UTC (permalink / raw)
  To: Andreas Schwab; +Cc: Carlos O'Donell via Libc-alpha, Carlos O'Donell


> On 6 Jul 2022, at 06:25, Andreas Schwab <schwab@suse.de> wrote:
> 
> This is causing a conflict with <linux/mount.h>, breaking the build of
> gcc.
> 
> In file included from /usr/include/linux/fs.h:19,
>                 from ../../../../libsanitizer/sanitizer_common/sanitizer_platform_limits_posix.cpp:76:
> /usr/include/linux/mount.h:95:6: error: multiple definition of 'enum fsconfig_command'
>   95 | enum fsconfig_command {
>      |      ^~~~~~~~~~~~~~~~
> In file included from ../../../../libsanitizer/sanitizer_common/sanitizer_platform_limits_posix.cpp:63:
> /usr/include/sys/mount.h:189:6: note: previous definition here
>  189 | enum fsconfig_command
>      |      ^~~~~~~~~~~~~~~~
> /usr/include/linux/mount.h:129:8: error: redefinition of 'struct mount_attr'
>  129 | struct mount_attr {
>      |        ^~~~~~~~~~
> /usr/include/sys/mount.h:161:8: note: previous definition of 'struct mount_attr'
>  161 | struct mount_attr
>      |        ^~~~~~~~~~
> make[4]: *** [Makefile:617: sanitizer_platform_limits_posix.lo] Error 1

I am not sure how to handle it, glibc sys/mount.h should be a standalone
header.  Maybe check if _UAPI_LINUX_MOUNT_H is defined so to use the
kernel definition? Or check the kernel version and __has_include and use
kernel version instead?

> 
> -- 
> Andreas Schwab, SUSE Labs, schwab@suse.de
> GPG Key fingerprint = 0196 BAD8 1CE9 1970 F4BE  1748 E4D4 88E3 0EEA B9D7
> "And now for something completely different."


^ permalink raw reply	[flat|nested] 26+ messages in thread

* Re: [PATCH v7 5/5] linux: Add mount_setattr
  2022-07-06 12:21       ` Adhemerval Zanella
@ 2022-07-10  2:28         ` Rudi Heitbaum
  2022-07-11 12:51           ` Adhemerval Zanella
  2022-07-11  8:30         ` Andreas Schwab
  2022-07-11  8:55         ` Florian Weimer
  2 siblings, 1 reply; 26+ messages in thread
From: Rudi Heitbaum @ 2022-07-10  2:28 UTC (permalink / raw)
  To: Adhemerval Zanella, schwab, carlos, libc-alpha

I am facing the same issue compiling gcc-12.1.0. but since
linux-Add-fsconfig.patch also facing the following error with
systemd-251.2.

I was successfully able to compile systemd-251.2 by reverting:
- linux-Add-fsconfig.patch
- linux-Add-fspick.patch
- linux-Add-open_tree.patch
- linux-Add-tst-mount-to-check-for-Linux-new-mount-API.patch
- linux-Add-mount_setattr.patch
- stdlib-Implement-mbrtoc8-c8rtomb-and-the-char8_t-typ.patch
from 2a5b4f7a715921a232f67f6810268c6cd6aa0af2

Executing (target): ninja 
[100/868] Compiling C object src/basic/libbasic.a.p/chase-symlinks.c.o
FAILED: src/basic/libbasic.a.p/chase-symlinks.c.o 
/var/media/DATA/home-rudi/LibreELEC.tv/build.LibreELEC-Generic.x86_64-11.0-devel/toolchain/bin/x86_64-libreelec-linux-gnu-gcc -Isrc/basic/libbasic.a.p -Isrc/basic -I../src/basic -Isrc/fundamental -I../src/fundamental -Isrc/systemd -I../src/systemd -I. -I.. -I/var/media/DATA/home-rudi/LibreELEC.tv/build.LibreELEC-Generic.x86_64-11.0-devel/toolchain/x86_64-libreelec-linux-gnu/sysroot/usr/include -fdiagnostics-color=always -D_FILE_OFFSET_BITS=64 -Wall -Winvalid-pch -Wextra -std=gnu11 -O0 -Wno-format-signedness -Wno-missing-field-initializers -Wno-unused-parameter -Wdate-time -Wendif-labels -Werror=format=2 -Werror=implicit-function-declaration -Werror=incompatible-pointer-types -Werror=int-conversion -Werror=overflow -Werror=override-init -Werror=return-type -Werror=shift-count-overflow -Werror=shift-overflow=2 -Werror=undef -Wfloat-equal -Wimplicit-fallthrough=5 -Winit-self -Wlogical-op -Wmissing-include-dirs -Wmissing-noreturn -Wnested-externs -Wold-style-definition -Wpointer-arith -Wredundant-decls -Wshadow -Wstrict-aliasing=2 -Wstrict-prototypes -Wsuggest-attribute=noreturn -Wunused-function -Wwrite-strings -Wno-unused-result -Werror=missing-declarations -Werror=missing-prototypes -fdiagnostics-show-option -fno-common -fno-strict-aliasing -fstack-protector -fstack-protector-strong -fvisibility=hidden --param=ssp-buffer-size=4 -ffunction-sections -fdata-sections -Werror=shadow -include config.h -march=x86-64-v3 -Wall -pipe -O2 -fomit-frame-pointer -DNDEBUG -fno-schedule-insns -fno-schedule-insns2 -Wno-format-truncation -fPIC -pthread -fvisibility=default -MD -MQ src/basic/libbasic.a.p/chase-symlinks.c.o -MF src/basic/libbasic.a.p/chase-symlinks.c.o.d -o src/basic/libbasic.a.p/chase-symlinks.c.o -c ../src/basic/chase-symlinks.c
In file included from ../src/basic/stat-util.h:13,
                 from ../src/basic/chase-symlinks.h:7,
                 from ../src/basic/chase-symlinks.c:6:
../src/basic/missing_stat.h:39:8: error: redefinition of 'struct statx_timestamp'
   39 | struct statx_timestamp {
      |        ^~~~~~~~~~~~~~~
In file included from /var/media/DATA/home-rudi/LibreELEC.tv/build.LibreELEC-Generic.x86_64-11.0-devel/toolchain/x86_64-libreelec-linux-gnu/sysroot/usr/include/bits/statx.h:31,
                 from /var/media/DATA/home-rudi/LibreELEC.tv/build.LibreELEC-Generic.x86_64-11.0-devel/toolchain/x86_64-libreelec-linux-gnu/sysroot/usr/include/sys/stat.h:465,
                 from ../src/basic/stat-util.h:7:
/var/media/DATA/home-rudi/LibreELEC.tv/build.LibreELEC-Generic.x86_64-11.0-devel/toolchain/x86_64-libreelec-linux-gnu/sysroot/usr/include/linux/stat.h:56:8: note: originally defined here
   56 | struct statx_timestamp {
      |        ^~~~~~~~~~~~~~~
../src/basic/missing_stat.h:45:8: error: redefinition of 'struct statx'
   45 | struct statx STATX_DEFINITION;
      |        ^~~~~
/var/media/DATA/home-rudi/LibreELEC.tv/build.LibreELEC-Generic.x86_64-11.0-devel/toolchain/x86_64-libreelec-linux-gnu/sysroot/usr/include/linux/stat.h:99:8: note: originally defined here
   99 | struct statx {
      |        ^~~~~

Regards
Rudi

On Wed, Jul 06, 2022 at 09:21:32AM -0300, Adhemerval Zanella wrote:
> 
> > On 6 Jul 2022, at 06:25, Andreas Schwab <schwab@suse.de> wrote:
> > 
> > This is causing a conflict with <linux/mount.h>, breaking the build of
> > gcc.
> > 
> > In file included from /usr/include/linux/fs.h:19,
> >                 from ../../../../libsanitizer/sanitizer_common/sanitizer_platform_limits_posix.cpp:76:
> > /usr/include/linux/mount.h:95:6: error: multiple definition of 'enum fsconfig_command'
> >   95 | enum fsconfig_command {
> >      |      ^~~~~~~~~~~~~~~~
> > In file included from ../../../../libsanitizer/sanitizer_common/sanitizer_platform_limits_posix.cpp:63:
> > /usr/include/sys/mount.h:189:6: note: previous definition here
> >  189 | enum fsconfig_command
> >      |      ^~~~~~~~~~~~~~~~
> > /usr/include/linux/mount.h:129:8: error: redefinition of 'struct mount_attr'
> >  129 | struct mount_attr {
> >      |        ^~~~~~~~~~
> > /usr/include/sys/mount.h:161:8: note: previous definition of 'struct mount_attr'
> >  161 | struct mount_attr
> >      |        ^~~~~~~~~~
> > make[4]: *** [Makefile:617: sanitizer_platform_limits_posix.lo] Error 1
> 
> I am not sure how to handle it, glibc sys/mount.h should be a standalone
> header.  Maybe check if _UAPI_LINUX_MOUNT_H is defined so to use the
> kernel definition? Or check the kernel version and __has_include and use
> kernel version instead?
> 
> > 
> > -- 
> > Andreas Schwab, SUSE Labs, schwab@suse.de
> > GPG Key fingerprint = 0196 BAD8 1CE9 1970 F4BE  1748 E4D4 88E3 0EEA B9D7
> > "And now for something completely different."
> 

^ permalink raw reply	[flat|nested] 26+ messages in thread

* Re: [PATCH v7 5/5] linux: Add mount_setattr
  2022-07-10  2:28         ` Rudi Heitbaum
@ 2022-07-11 12:51           ` Adhemerval Zanella
  2022-07-11 13:13             ` Rudi Heitbaum
  0 siblings, 1 reply; 26+ messages in thread
From: Adhemerval Zanella @ 2022-07-11 12:51 UTC (permalink / raw)
  To: Rudi Heitbaum; +Cc: schwab, carlos, libc-alpha



> On 9 Jul 2022, at 23:28, Rudi Heitbaum <rudi@heitbaum.com> wrote:
> 
> I am facing the same issue compiling gcc-12.1.0. but since
> linux-Add-fsconfig.patch also facing the following error with
> systemd-251.2.
> 
> I was successfully able to compile systemd-251.2 by reverting:
> - linux-Add-fsconfig.patch
> - linux-Add-fspick.patch
> - linux-Add-open_tree.patch
> - linux-Add-tst-mount-to-check-for-Linux-new-mount-API.patch
> - linux-Add-mount_setattr.patch
> - stdlib-Implement-mbrtoc8-c8rtomb-and-the-char8_t-typ.patch
> from 2a5b4f7a715921a232f67f6810268c6cd6aa0af2

Which patch exactly broke the build, because from the logs is hard to
tell exactly (specially because it should not interfere with statx
definition)?

> 
> Executing (target): ninja 
> [100/868] Compiling C object src/basic/libbasic.a.p/chase-symlinks.c.o
> FAILED: src/basic/libbasic.a.p/chase-symlinks.c.o 
> /var/media/DATA/home-rudi/LibreELEC.tv/build.LibreELEC-Generic.x86_64-11.0-devel/toolchain/bin/x86_64-libreelec-linux-gnu-gcc -Isrc/basic/libbasic.a.p -Isrc/basic -I../src/basic -Isrc/fundamental -I../src/fundamental -Isrc/systemd -I../src/systemd -I. -I.. -I/var/media/DATA/home-rudi/LibreELEC.tv/build.LibreELEC-Generic.x86_64-11.0-devel/toolchain/x86_64-libreelec-linux-gnu/sysroot/usr/include -fdiagnostics-color=always -D_FILE_OFFSET_BITS=64 -Wall -Winvalid-pch -Wextra -std=gnu11 -O0 -Wno-format-signedness -Wno-missing-field-initializers -Wno-unused-parameter -Wdate-time -Wendif-labels -Werror=format=2 -Werror=implicit-function-declaration -Werror=incompatible-pointer-types -Werror=int-conversion -Werror=overflow -Werror=override-init -Werror=return-type -Werror=shift-count-overflow -Werror=shift-overflow=2 -Werror=undef -Wfloat-equal -Wimplicit-fallthrough=5 -Winit-self -Wlogical-op -Wmissing-include-dirs -Wmissing-noreturn -Wnested-externs -Wold-style-definition -Wpointer-arith -Wredundant-decls -Wshadow -Wstrict-aliasing=2 -Wstrict-prototypes -Wsuggest-attribute=noreturn -Wunused-function -Wwrite-strings -Wno-unused-result -Werror=missing-declarations -Werror=missing-prototypes -fdiagnostics-show-option -fno-common -fno-strict-aliasing -fstack-protector -fstack-protector-strong -fvisibility=hidden --param=ssp-buffer-size=4 -ffunction-sections -fdata-sections -Werror=shadow -include config.h -march=x86-64-v3 -Wall -pipe -O2 -fomit-frame-pointer -DNDEBUG -fno-schedule-insns -fno-schedule-insns2 -Wno-format-truncation -fPIC -pthread -fvisibility=default -MD -MQ src/basic/libbasic.a.p/chase-symlinks.c.o -MF src/basic/libbasic.a.p/chase-symlinks.c.o.d -o src/basic/libbasic.a.p/chase-symlinks.c.o -c ../src/basic/chase-symlinks.c
> In file included from ../src/basic/stat-util.h:13,
>                 from ../src/basic/chase-symlinks.h:7,
>                 from ../src/basic/chase-symlinks.c:6:
> ../src/basic/missing_stat.h:39:8: error: redefinition of 'struct statx_timestamp'
>   39 | struct statx_timestamp {
>      |        ^~~~~~~~~~~~~~~
> In file included from /var/media/DATA/home-rudi/LibreELEC.tv/build.LibreELEC-Generic.x86_64-11.0-devel/toolchain/x86_64-libreelec-linux-gnu/sysroot/usr/include/bits/statx.h:31,
>                 from /var/media/DATA/home-rudi/LibreELEC.tv/build.LibreELEC-Generic.x86_64-11.0-devel/toolchain/x86_64-libreelec-linux-gnu/sysroot/usr/include/sys/stat.h:465,
>                 from ../src/basic/stat-util.h:7:
> /var/media/DATA/home-rudi/LibreELEC.tv/build.LibreELEC-Generic.x86_64-11.0-devel/toolchain/x86_64-libreelec-linux-gnu/sysroot/usr/include/linux/stat.h:56:8: note: originally defined here
>   56 | struct statx_timestamp {
>      |        ^~~~~~~~~~~~~~~
> ../src/basic/missing_stat.h:45:8: error: redefinition of 'struct statx'
>   45 | struct statx STATX_DEFINITION;
>      |        ^~~~~
> /var/media/DATA/home-rudi/LibreELEC.tv/build.LibreELEC-Generic.x86_64-11.0-devel/toolchain/x86_64-libreelec-linux-gnu/sysroot/usr/include/linux/stat.h:99:8: note: originally defined here
>   99 | struct statx {
>      |        ^~~~~
> 
> Regards
> Rudi
> 
> On Wed, Jul 06, 2022 at 09:21:32AM -0300, Adhemerval Zanella wrote:
>> 
>>> On 6 Jul 2022, at 06:25, Andreas Schwab <schwab@suse.de> wrote:
>>> 
>>> This is causing a conflict with <linux/mount.h>, breaking the build of
>>> gcc.
>>> 
>>> In file included from /usr/include/linux/fs.h:19,
>>>                from ../../../../libsanitizer/sanitizer_common/sanitizer_platform_limits_posix.cpp:76:
>>> /usr/include/linux/mount.h:95:6: error: multiple definition of 'enum fsconfig_command'
>>>  95 | enum fsconfig_command {
>>>     |      ^~~~~~~~~~~~~~~~
>>> In file included from ../../../../libsanitizer/sanitizer_common/sanitizer_platform_limits_posix.cpp:63:
>>> /usr/include/sys/mount.h:189:6: note: previous definition here
>>> 189 | enum fsconfig_command
>>>     |      ^~~~~~~~~~~~~~~~
>>> /usr/include/linux/mount.h:129:8: error: redefinition of 'struct mount_attr'
>>> 129 | struct mount_attr {
>>>     |        ^~~~~~~~~~
>>> /usr/include/sys/mount.h:161:8: note: previous definition of 'struct mount_attr'
>>> 161 | struct mount_attr
>>>     |        ^~~~~~~~~~
>>> make[4]: *** [Makefile:617: sanitizer_platform_limits_posix.lo] Error 1
>> 
>> I am not sure how to handle it, glibc sys/mount.h should be a standalone
>> header.  Maybe check if _UAPI_LINUX_MOUNT_H is defined so to use the
>> kernel definition? Or check the kernel version and __has_include and use
>> kernel version instead?
>> 
>>> 
>>> -- 
>>> Andreas Schwab, SUSE Labs, schwab@suse.de
>>> GPG Key fingerprint = 0196 BAD8 1CE9 1970 F4BE  1748 E4D4 88E3 0EEA B9D7
>>> "And now for something completely different."
>> 


^ permalink raw reply	[flat|nested] 26+ messages in thread

* Re: [PATCH v7 5/5] linux: Add mount_setattr
  2022-07-11 12:51           ` Adhemerval Zanella
@ 2022-07-11 13:13             ` Rudi Heitbaum
  2022-07-12 13:11               ` Rudi Heitbaum
  0 siblings, 1 reply; 26+ messages in thread
From: Rudi Heitbaum @ 2022-07-11 13:13 UTC (permalink / raw)
  To: Adhemerval Zanella; +Cc: schwab, carlos, libc-alpha

Hi Adhemerval,

linux-Add-fsconfig.patch broke the build, I reverted the others for a
clean revert.
Just adding linux-Add-fsconfig.patch back causes the systemd build to fail.

Thanks
Rudi

On Mon, 11 Jul 2022 at 22:51, Adhemerval Zanella
<adhemerval.zanella@linaro.org> wrote:
>
>
>
> > On 9 Jul 2022, at 23:28, Rudi Heitbaum <rudi@heitbaum.com> wrote:
> >
> > I am facing the same issue compiling gcc-12.1.0. but since
> > linux-Add-fsconfig.patch also facing the following error with
> > systemd-251.2.
> >
> > I was successfully able to compile systemd-251.2 by reverting:
> > - linux-Add-fsconfig.patch
> > - linux-Add-fspick.patch
> > - linux-Add-open_tree.patch
> > - linux-Add-tst-mount-to-check-for-Linux-new-mount-API.patch
> > - linux-Add-mount_setattr.patch
> > - stdlib-Implement-mbrtoc8-c8rtomb-and-the-char8_t-typ.patch
> > from 2a5b4f7a715921a232f67f6810268c6cd6aa0af2
>
> Which patch exactly broke the build, because from the logs is hard to
> tell exactly (specially because it should not interfere with statx
> definition)?
>
> >
> > Executing (target): ninja
> > [100/868] Compiling C object src/basic/libbasic.a.p/chase-symlinks.c.o
> > FAILED: src/basic/libbasic.a.p/chase-symlinks.c.o
> > /var/media/DATA/home-rudi/LibreELEC.tv/build.LibreELEC-Generic.x86_64-11.0-devel/toolchain/bin/x86_64-libreelec-linux-gnu-gcc -Isrc/basic/libbasic.a.p -Isrc/basic -I../src/basic -Isrc/fundamental -I../src/fundamental -Isrc/systemd -I../src/systemd -I. -I.. -I/var/media/DATA/home-rudi/LibreELEC.tv/build.LibreELEC-Generic.x86_64-11.0-devel/toolchain/x86_64-libreelec-linux-gnu/sysroot/usr/include -fdiagnostics-color=always -D_FILE_OFFSET_BITS=64 -Wall -Winvalid-pch -Wextra -std=gnu11 -O0 -Wno-format-signedness -Wno-missing-field-initializers -Wno-unused-parameter -Wdate-time -Wendif-labels -Werror=format=2 -Werror=implicit-function-declaration -Werror=incompatible-pointer-types -Werror=int-conversion -Werror=overflow -Werror=override-init -Werror=return-type -Werror=shift-count-overflow -Werror=shift-overflow=2 -Werror=undef -Wfloat-equal -Wimplicit-fallthrough=5 -Winit-self -Wlogical-op -Wmissing-include-dirs -Wmissing-noreturn -Wnested-externs -Wold-style-definition -Wpointer-arith -Wredundant-decls -Wshadow -Wstrict-aliasing=2 -Wstrict-prototypes -Wsuggest-attribute=noreturn -Wunused-function -Wwrite-strings -Wno-unused-result -Werror=missing-declarations -Werror=missing-prototypes -fdiagnostics-show-option -fno-common -fno-strict-aliasing -fstack-protector -fstack-protector-strong -fvisibility=hidden --param=ssp-buffer-size=4 -ffunction-sections -fdata-sections -Werror=shadow -include config.h -march=x86-64-v3 -Wall -pipe -O2 -fomit-frame-pointer -DNDEBUG -fno-schedule-insns -fno-schedule-insns2 -Wno-format-truncation -fPIC -pthread -fvisibility=default -MD -MQ src/basic/libbasic.a.p/chase-symlinks.c.o -MF src/basic/libbasic.a.p/chase-symlinks.c.o.d -o src/basic/libbasic.a.p/chase-symlinks.c.o -c ../src/basic/chase-symlinks.c
> > In file included from ../src/basic/stat-util.h:13,
> >                 from ../src/basic/chase-symlinks.h:7,
> >                 from ../src/basic/chase-symlinks.c:6:
> > ../src/basic/missing_stat.h:39:8: error: redefinition of 'struct statx_timestamp'
> >   39 | struct statx_timestamp {
> >      |        ^~~~~~~~~~~~~~~
> > In file included from /var/media/DATA/home-rudi/LibreELEC.tv/build.LibreELEC-Generic.x86_64-11.0-devel/toolchain/x86_64-libreelec-linux-gnu/sysroot/usr/include/bits/statx.h:31,
> >                 from /var/media/DATA/home-rudi/LibreELEC.tv/build.LibreELEC-Generic.x86_64-11.0-devel/toolchain/x86_64-libreelec-linux-gnu/sysroot/usr/include/sys/stat.h:465,
> >                 from ../src/basic/stat-util.h:7:
> > /var/media/DATA/home-rudi/LibreELEC.tv/build.LibreELEC-Generic.x86_64-11.0-devel/toolchain/x86_64-libreelec-linux-gnu/sysroot/usr/include/linux/stat.h:56:8: note: originally defined here
> >   56 | struct statx_timestamp {
> >      |        ^~~~~~~~~~~~~~~
> > ../src/basic/missing_stat.h:45:8: error: redefinition of 'struct statx'
> >   45 | struct statx STATX_DEFINITION;
> >      |        ^~~~~
> > /var/media/DATA/home-rudi/LibreELEC.tv/build.LibreELEC-Generic.x86_64-11.0-devel/toolchain/x86_64-libreelec-linux-gnu/sysroot/usr/include/linux/stat.h:99:8: note: originally defined here
> >   99 | struct statx {
> >      |        ^~~~~
> >
> > Regards
> > Rudi
> >
> > On Wed, Jul 06, 2022 at 09:21:32AM -0300, Adhemerval Zanella wrote:
> >>
> >>> On 6 Jul 2022, at 06:25, Andreas Schwab <schwab@suse.de> wrote:
> >>>
> >>> This is causing a conflict with <linux/mount.h>, breaking the build of
> >>> gcc.
> >>>
> >>> In file included from /usr/include/linux/fs.h:19,
> >>>                from ../../../../libsanitizer/sanitizer_common/sanitizer_platform_limits_posix.cpp:76:
> >>> /usr/include/linux/mount.h:95:6: error: multiple definition of 'enum fsconfig_command'
> >>>  95 | enum fsconfig_command {
> >>>     |      ^~~~~~~~~~~~~~~~
> >>> In file included from ../../../../libsanitizer/sanitizer_common/sanitizer_platform_limits_posix.cpp:63:
> >>> /usr/include/sys/mount.h:189:6: note: previous definition here
> >>> 189 | enum fsconfig_command
> >>>     |      ^~~~~~~~~~~~~~~~
> >>> /usr/include/linux/mount.h:129:8: error: redefinition of 'struct mount_attr'
> >>> 129 | struct mount_attr {
> >>>     |        ^~~~~~~~~~
> >>> /usr/include/sys/mount.h:161:8: note: previous definition of 'struct mount_attr'
> >>> 161 | struct mount_attr
> >>>     |        ^~~~~~~~~~
> >>> make[4]: *** [Makefile:617: sanitizer_platform_limits_posix.lo] Error 1
> >>
> >> I am not sure how to handle it, glibc sys/mount.h should be a standalone
> >> header.  Maybe check if _UAPI_LINUX_MOUNT_H is defined so to use the
> >> kernel definition? Or check the kernel version and __has_include and use
> >> kernel version instead?
> >>
> >>>
> >>> --
> >>> Andreas Schwab, SUSE Labs, schwab@suse.de
> >>> GPG Key fingerprint = 0196 BAD8 1CE9 1970 F4BE  1748 E4D4 88E3 0EEA B9D7
> >>> "And now for something completely different."
> >>
>

^ permalink raw reply	[flat|nested] 26+ messages in thread

* Re: [PATCH v7 5/5] linux: Add mount_setattr
  2022-07-11 13:13             ` Rudi Heitbaum
@ 2022-07-12 13:11               ` Rudi Heitbaum
  2022-07-12 15:33                 ` Adhemerval Zanella Netto
  0 siblings, 1 reply; 26+ messages in thread
From: Rudi Heitbaum @ 2022-07-12 13:11 UTC (permalink / raw)
  To: Adhemerval Zanella, libc-alpha; +Cc: schwab, carlos

Hi Adhemerval,

I tracked down the build error with systemd being the
HAVE_STRUCT_STATX was not being set in the meson.build - due to the
conflict occurring with the inclusion of linux/fs.h.

The fix was to drop linux/fs.h (the same as in gcc libsanitizer.) I'll
raise an issue on the systemd GitHub.
The following patch (whilst not tested on < glibc 2.36) allowed the
compile to succeed.)

--- a/meson.build       2022-07-12 12:20:25.366313151 +0000
+++ b/meson.build       2022-07-12 12:46:19.276121413 +0000
@@ -479,7 +479,6 @@
 #include <uchar.h>
 #include <sys/mount.h>
 #include <sys/stat.h>
-#include <linux/fs.h>
 '''

 foreach decl : ['char16_t',
--- a/src/shared/mount-util.c   2022-06-02 18:07:11.000000000 +0000
+++ b/src/shared/mount-util.c   2022-07-12 12:52:46.644787385 +0000
@@ -7,7 +7,6 @@
 #include <sys/statvfs.h>
 #include <unistd.h>
 #include <linux/loop.h>
-#include <linux/fs.h>

 #include "alloc-util.h"
 #include "chase-symlinks.h"
--- a/src/core/namespace.c      2022-06-02 18:07:11.000000000 +0000
+++ b/src/core/namespace.c      2022-07-12 12:56:35.807502035 +0000
@@ -6,7 +6,6 @@
 #include <stdio.h>
 #include <sys/mount.h>
 #include <unistd.h>
-#include <linux/fs.h>

 #include "alloc-util.h"
 #include "base-filesystem.h"

On Mon, 11 Jul 2022 at 23:13, Rudi Heitbaum <rudi@heitbaum.com> wrote:
>
> Hi Adhemerval,
>
> linux-Add-fsconfig.patch broke the build, I reverted the others for a
> clean revert.
> Just adding linux-Add-fsconfig.patch back causes the systemd build to fail.
>
> Thanks
> Rudi
>
> On Mon, 11 Jul 2022 at 22:51, Adhemerval Zanella
> <adhemerval.zanella@linaro.org> wrote:
> >
> >
> >
> > > On 9 Jul 2022, at 23:28, Rudi Heitbaum <rudi@heitbaum.com> wrote:
> > >
> > > I am facing the same issue compiling gcc-12.1.0. but since
> > > linux-Add-fsconfig.patch also facing the following error with
> > > systemd-251.2.
> > >
> > > I was successfully able to compile systemd-251.2 by reverting:
> > > - linux-Add-fsconfig.patch
> > > - linux-Add-fspick.patch
> > > - linux-Add-open_tree.patch
> > > - linux-Add-tst-mount-to-check-for-Linux-new-mount-API.patch
> > > - linux-Add-mount_setattr.patch
> > > - stdlib-Implement-mbrtoc8-c8rtomb-and-the-char8_t-typ.patch
> > > from 2a5b4f7a715921a232f67f6810268c6cd6aa0af2
> >
> > Which patch exactly broke the build, because from the logs is hard to
> > tell exactly (specially because it should not interfere with statx
> > definition)?
> >
> > >
> > > Executing (target): ninja
> > > [100/868] Compiling C object src/basic/libbasic.a.p/chase-symlinks.c.o
> > > FAILED: src/basic/libbasic.a.p/chase-symlinks.c.o
> > > /var/media/DATA/home-rudi/LibreELEC.tv/build.LibreELEC-Generic.x86_64-11.0-devel/toolchain/bin/x86_64-libreelec-linux-gnu-gcc -Isrc/basic/libbasic.a.p -Isrc/basic -I../src/basic -Isrc/fundamental -I../src/fundamental -Isrc/systemd -I../src/systemd -I. -I.. -I/var/media/DATA/home-rudi/LibreELEC.tv/build.LibreELEC-Generic.x86_64-11.0-devel/toolchain/x86_64-libreelec-linux-gnu/sysroot/usr/include -fdiagnostics-color=always -D_FILE_OFFSET_BITS=64 -Wall -Winvalid-pch -Wextra -std=gnu11 -O0 -Wno-format-signedness -Wno-missing-field-initializers -Wno-unused-parameter -Wdate-time -Wendif-labels -Werror=format=2 -Werror=implicit-function-declaration -Werror=incompatible-pointer-types -Werror=int-conversion -Werror=overflow -Werror=override-init -Werror=return-type -Werror=shift-count-overflow -Werror=shift-overflow=2 -Werror=undef -Wfloat-equal -Wimplicit-fallthrough=5 -Winit-self -Wlogical-op -Wmissing-include-dirs -Wmissing-noreturn -Wnested-externs -Wold-style-definition -Wpointer-arith -Wredundant-decls -Wshadow -Wstrict-aliasing=2 -Wstrict-prototypes -Wsuggest-attribute=noreturn -Wunused-function -Wwrite-strings -Wno-unused-result -Werror=missing-declarations -Werror=missing-prototypes -fdiagnostics-show-option -fno-common -fno-strict-aliasing -fstack-protector -fstack-protector-strong -fvisibility=hidden --param=ssp-buffer-size=4 -ffunction-sections -fdata-sections -Werror=shadow -include config.h -march=x86-64-v3 -Wall -pipe -O2 -fomit-frame-pointer -DNDEBUG -fno-schedule-insns -fno-schedule-insns2 -Wno-format-truncation -fPIC -pthread -fvisibility=default -MD -MQ src/basic/libbasic.a.p/chase-symlinks.c.o -MF src/basic/libbasic.a.p/chase-symlinks.c.o.d -o src/basic/libbasic.a.p/chase-symlinks.c.o -c ../src/basic/chase-symlinks.c
> > > In file included from ../src/basic/stat-util.h:13,
> > >                 from ../src/basic/chase-symlinks.h:7,
> > >                 from ../src/basic/chase-symlinks.c:6:
> > > ../src/basic/missing_stat.h:39:8: error: redefinition of 'struct statx_timestamp'
> > >   39 | struct statx_timestamp {
> > >      |        ^~~~~~~~~~~~~~~
> > > In file included from /var/media/DATA/home-rudi/LibreELEC.tv/build.LibreELEC-Generic.x86_64-11.0-devel/toolchain/x86_64-libreelec-linux-gnu/sysroot/usr/include/bits/statx.h:31,
> > >                 from /var/media/DATA/home-rudi/LibreELEC.tv/build.LibreELEC-Generic.x86_64-11.0-devel/toolchain/x86_64-libreelec-linux-gnu/sysroot/usr/include/sys/stat.h:465,
> > >                 from ../src/basic/stat-util.h:7:
> > > /var/media/DATA/home-rudi/LibreELEC.tv/build.LibreELEC-Generic.x86_64-11.0-devel/toolchain/x86_64-libreelec-linux-gnu/sysroot/usr/include/linux/stat.h:56:8: note: originally defined here
> > >   56 | struct statx_timestamp {
> > >      |        ^~~~~~~~~~~~~~~
> > > ../src/basic/missing_stat.h:45:8: error: redefinition of 'struct statx'
> > >   45 | struct statx STATX_DEFINITION;
> > >      |        ^~~~~
> > > /var/media/DATA/home-rudi/LibreELEC.tv/build.LibreELEC-Generic.x86_64-11.0-devel/toolchain/x86_64-libreelec-linux-gnu/sysroot/usr/include/linux/stat.h:99:8: note: originally defined here
> > >   99 | struct statx {
> > >      |        ^~~~~
> > >
> > > Regards
> > > Rudi
> > >
> > > On Wed, Jul 06, 2022 at 09:21:32AM -0300, Adhemerval Zanella wrote:
> > >>
> > >>> On 6 Jul 2022, at 06:25, Andreas Schwab <schwab@suse.de> wrote:
> > >>>
> > >>> This is causing a conflict with <linux/mount.h>, breaking the build of
> > >>> gcc.
> > >>>
> > >>> In file included from /usr/include/linux/fs.h:19,
> > >>>                from ../../../../libsanitizer/sanitizer_common/sanitizer_platform_limits_posix.cpp:76:
> > >>> /usr/include/linux/mount.h:95:6: error: multiple definition of 'enum fsconfig_command'
> > >>>  95 | enum fsconfig_command {
> > >>>     |      ^~~~~~~~~~~~~~~~
> > >>> In file included from ../../../../libsanitizer/sanitizer_common/sanitizer_platform_limits_posix.cpp:63:
> > >>> /usr/include/sys/mount.h:189:6: note: previous definition here
> > >>> 189 | enum fsconfig_command
> > >>>     |      ^~~~~~~~~~~~~~~~
> > >>> /usr/include/linux/mount.h:129:8: error: redefinition of 'struct mount_attr'
> > >>> 129 | struct mount_attr {
> > >>>     |        ^~~~~~~~~~
> > >>> /usr/include/sys/mount.h:161:8: note: previous definition of 'struct mount_attr'
> > >>> 161 | struct mount_attr
> > >>>     |        ^~~~~~~~~~
> > >>> make[4]: *** [Makefile:617: sanitizer_platform_limits_posix.lo] Error 1
> > >>
> > >> I am not sure how to handle it, glibc sys/mount.h should be a standalone
> > >> header.  Maybe check if _UAPI_LINUX_MOUNT_H is defined so to use the
> > >> kernel definition? Or check the kernel version and __has_include and use
> > >> kernel version instead?
> > >>
> > >>>
> > >>> --
> > >>> Andreas Schwab, SUSE Labs, schwab@suse.de
> > >>> GPG Key fingerprint = 0196 BAD8 1CE9 1970 F4BE  1748 E4D4 88E3 0EEA B9D7
> > >>> "And now for something completely different."
> > >>
> >

^ permalink raw reply	[flat|nested] 26+ messages in thread

* Re: [PATCH v7 5/5] linux: Add mount_setattr
  2022-07-12 13:11               ` Rudi Heitbaum
@ 2022-07-12 15:33                 ` Adhemerval Zanella Netto
  0 siblings, 0 replies; 26+ messages in thread
From: Adhemerval Zanella Netto @ 2022-07-12 15:33 UTC (permalink / raw)
  To: Rudi Heitbaum, libc-alpha; +Cc: schwab, carlos

Hi Rudi,

Thanks for track this down, it does seems a better alternative to avoid
mixing glibc and Linux headers.  Even though we try to make them
compatible, it means implementation detais (such internal defines)
or extra boilerplate code (such as has_include) needs to be added
to handle it.

On 12/07/22 10:11, Rudi Heitbaum wrote:
> Hi Adhemerval,
> 
> I tracked down the build error with systemd being the
> HAVE_STRUCT_STATX was not being set in the meson.build - due to the
> conflict occurring with the inclusion of linux/fs.h.
> 
> The fix was to drop linux/fs.h (the same as in gcc libsanitizer.) I'll
> raise an issue on the systemd GitHub.
> The following patch (whilst not tested on < glibc 2.36) allowed the
> compile to succeed.)
> 
> --- a/meson.build       2022-07-12 12:20:25.366313151 +0000
> +++ b/meson.build       2022-07-12 12:46:19.276121413 +0000
> @@ -479,7 +479,6 @@
>   #include <uchar.h>
>   #include <sys/mount.h>
>   #include <sys/stat.h>
> -#include <linux/fs.h>
>   '''
> 
>   foreach decl : ['char16_t',
> --- a/src/shared/mount-util.c   2022-06-02 18:07:11.000000000 +0000
> +++ b/src/shared/mount-util.c   2022-07-12 12:52:46.644787385 +0000
> @@ -7,7 +7,6 @@
>   #include <sys/statvfs.h>
>   #include <unistd.h>
>   #include <linux/loop.h>
> -#include <linux/fs.h>
> 
>   #include "alloc-util.h"
>   #include "chase-symlinks.h"
> --- a/src/core/namespace.c      2022-06-02 18:07:11.000000000 +0000
> +++ b/src/core/namespace.c      2022-07-12 12:56:35.807502035 +0000
> @@ -6,7 +6,6 @@
>   #include <stdio.h>
>   #include <sys/mount.h>
>   #include <unistd.h>
> -#include <linux/fs.h>
> 
>   #include "alloc-util.h"
>   #include "base-filesystem.h"
> 
> On Mon, 11 Jul 2022 at 23:13, Rudi Heitbaum <rudi@heitbaum.com> wrote:
>>
>> Hi Adhemerval,
>>
>> linux-Add-fsconfig.patch broke the build, I reverted the others for a
>> clean revert.
>> Just adding linux-Add-fsconfig.patch back causes the systemd build to fail.
>>
>> Thanks
>> Rudi
>>
>> On Mon, 11 Jul 2022 at 22:51, Adhemerval Zanella
>> <adhemerval.zanella@linaro.org> wrote:
>>>
>>>
>>>
>>>> On 9 Jul 2022, at 23:28, Rudi Heitbaum <rudi@heitbaum.com> wrote:
>>>>
>>>> I am facing the same issue compiling gcc-12.1.0. but since
>>>> linux-Add-fsconfig.patch also facing the following error with
>>>> systemd-251.2.
>>>>
>>>> I was successfully able to compile systemd-251.2 by reverting:
>>>> - linux-Add-fsconfig.patch
>>>> - linux-Add-fspick.patch
>>>> - linux-Add-open_tree.patch
>>>> - linux-Add-tst-mount-to-check-for-Linux-new-mount-API.patch
>>>> - linux-Add-mount_setattr.patch
>>>> - stdlib-Implement-mbrtoc8-c8rtomb-and-the-char8_t-typ.patch
>>>> from 2a5b4f7a715921a232f67f6810268c6cd6aa0af2
>>>
>>> Which patch exactly broke the build, because from the logs is hard to
>>> tell exactly (specially because it should not interfere with statx
>>> definition)?
>>>
>>>>
>>>> Executing (target): ninja
>>>> [100/868] Compiling C object src/basic/libbasic.a.p/chase-symlinks.c.o
>>>> FAILED: src/basic/libbasic.a.p/chase-symlinks.c.o
>>>> /var/media/DATA/home-rudi/LibreELEC.tv/build.LibreELEC-Generic.x86_64-11.0-devel/toolchain/bin/x86_64-libreelec-linux-gnu-gcc -Isrc/basic/libbasic.a.p -Isrc/basic -I../src/basic -Isrc/fundamental -I../src/fundamental -Isrc/systemd -I../src/systemd -I. -I.. -I/var/media/DATA/home-rudi/LibreELEC.tv/build.LibreELEC-Generic.x86_64-11.0-devel/toolchain/x86_64-libreelec-linux-gnu/sysroot/usr/include -fdiagnostics-color=always -D_FILE_OFFSET_BITS=64 -Wall -Winvalid-pch -Wextra -std=gnu11 -O0 -Wno-format-signedness -Wno-missing-field-initializers -Wno-unused-parameter -Wdate-time -Wendif-labels -Werror=format=2 -Werror=implicit-function-declaration -Werror=incompatible-pointer-types -Werror=int-conversion -Werror=overflow -Werror=override-init -Werror=return-type -Werror=shift-count-overflow -Werror=shift-overflow=2 -Werror=undef -Wfloat-equal -Wimplicit-fallthrough=5 -Winit-self -Wlogical-op -Wmissing-include-dirs -Wmissing-noreturn -Wnested-externs -Wold-style-definition -Wpointer-arith -Wredundant-decls -Wshadow -Wstrict-aliasing=2 -Wstrict-prototypes -Wsuggest-attribute=noreturn -Wunused-function -Wwrite-strings -Wno-unused-result -Werror=missing-declarations -Werror=missing-prototypes -fdiagnostics-show-option -fno-common -fno-strict-aliasing -fstack-protector -fstack-protector-strong -fvisibility=hidden --param=ssp-buffer-size=4 -ffunction-sections -fdata-sections -Werror=shadow -include config.h -march=x86-64-v3 -Wall -pipe -O2 -fomit-frame-pointer -DNDEBUG -fno-schedule-insns -fno-schedule-insns2 -Wno-format-truncation -fPIC -pthread -fvisibility=default -MD -MQ src/basic/libbasic.a.p/chase-symlinks.c.o -MF src/basic/libbasic.a.p/chase-symlinks.c.o.d -o src/basic/libbasic.a.p/chase-symlinks.c.o -c ../src/basic/chase-symlinks.c
>>>> In file included from ../src/basic/stat-util.h:13,
>>>>                  from ../src/basic/chase-symlinks.h:7,
>>>>                  from ../src/basic/chase-symlinks.c:6:
>>>> ../src/basic/missing_stat.h:39:8: error: redefinition of 'struct statx_timestamp'
>>>>    39 | struct statx_timestamp {
>>>>       |        ^~~~~~~~~~~~~~~
>>>> In file included from /var/media/DATA/home-rudi/LibreELEC.tv/build.LibreELEC-Generic.x86_64-11.0-devel/toolchain/x86_64-libreelec-linux-gnu/sysroot/usr/include/bits/statx.h:31,
>>>>                  from /var/media/DATA/home-rudi/LibreELEC.tv/build.LibreELEC-Generic.x86_64-11.0-devel/toolchain/x86_64-libreelec-linux-gnu/sysroot/usr/include/sys/stat.h:465,
>>>>                  from ../src/basic/stat-util.h:7:
>>>> /var/media/DATA/home-rudi/LibreELEC.tv/build.LibreELEC-Generic.x86_64-11.0-devel/toolchain/x86_64-libreelec-linux-gnu/sysroot/usr/include/linux/stat.h:56:8: note: originally defined here
>>>>    56 | struct statx_timestamp {
>>>>       |        ^~~~~~~~~~~~~~~
>>>> ../src/basic/missing_stat.h:45:8: error: redefinition of 'struct statx'
>>>>    45 | struct statx STATX_DEFINITION;
>>>>       |        ^~~~~
>>>> /var/media/DATA/home-rudi/LibreELEC.tv/build.LibreELEC-Generic.x86_64-11.0-devel/toolchain/x86_64-libreelec-linux-gnu/sysroot/usr/include/linux/stat.h:99:8: note: originally defined here
>>>>    99 | struct statx {
>>>>       |        ^~~~~
>>>>
>>>> Regards
>>>> Rudi
>>>>
>>>> On Wed, Jul 06, 2022 at 09:21:32AM -0300, Adhemerval Zanella wrote:
>>>>>
>>>>>> On 6 Jul 2022, at 06:25, Andreas Schwab <schwab@suse.de> wrote:
>>>>>>
>>>>>> This is causing a conflict with <linux/mount.h>, breaking the build of
>>>>>> gcc.
>>>>>>
>>>>>> In file included from /usr/include/linux/fs.h:19,
>>>>>>                 from ../../../../libsanitizer/sanitizer_common/sanitizer_platform_limits_posix.cpp:76:
>>>>>> /usr/include/linux/mount.h:95:6: error: multiple definition of 'enum fsconfig_command'
>>>>>>   95 | enum fsconfig_command {
>>>>>>      |      ^~~~~~~~~~~~~~~~
>>>>>> In file included from ../../../../libsanitizer/sanitizer_common/sanitizer_platform_limits_posix.cpp:63:
>>>>>> /usr/include/sys/mount.h:189:6: note: previous definition here
>>>>>> 189 | enum fsconfig_command
>>>>>>      |      ^~~~~~~~~~~~~~~~
>>>>>> /usr/include/linux/mount.h:129:8: error: redefinition of 'struct mount_attr'
>>>>>> 129 | struct mount_attr {
>>>>>>      |        ^~~~~~~~~~
>>>>>> /usr/include/sys/mount.h:161:8: note: previous definition of 'struct mount_attr'
>>>>>> 161 | struct mount_attr
>>>>>>      |        ^~~~~~~~~~
>>>>>> make[4]: *** [Makefile:617: sanitizer_platform_limits_posix.lo] Error 1
>>>>>
>>>>> I am not sure how to handle it, glibc sys/mount.h should be a standalone
>>>>> header.  Maybe check if _UAPI_LINUX_MOUNT_H is defined so to use the
>>>>> kernel definition? Or check the kernel version and __has_include and use
>>>>> kernel version instead?
>>>>>
>>>>>>
>>>>>> --
>>>>>> Andreas Schwab, SUSE Labs, schwab@suse.de
>>>>>> GPG Key fingerprint = 0196 BAD8 1CE9 1970 F4BE  1748 E4D4 88E3 0EEA B9D7
>>>>>> "And now for something completely different."
>>>>>
>>>

^ permalink raw reply	[flat|nested] 26+ messages in thread

* Re: [PATCH v7 5/5] linux: Add mount_setattr
  2022-07-06 12:21       ` Adhemerval Zanella
  2022-07-10  2:28         ` Rudi Heitbaum
@ 2022-07-11  8:30         ` Andreas Schwab
  2022-07-11  8:55         ` Florian Weimer
  2 siblings, 0 replies; 26+ messages in thread
From: Andreas Schwab @ 2022-07-11  8:30 UTC (permalink / raw)
  To: Adhemerval Zanella
  Cc: Carlos O'Donell via Libc-alpha, Carlos O'Donell

https://reviews.llvm.org/D129471

-- 
Andreas Schwab, SUSE Labs, schwab@suse.de
GPG Key fingerprint = 0196 BAD8 1CE9 1970 F4BE  1748 E4D4 88E3 0EEA B9D7
"And now for something completely different."

^ permalink raw reply	[flat|nested] 26+ messages in thread

* Re: [PATCH v7 5/5] linux: Add mount_setattr
  2022-07-06 12:21       ` Adhemerval Zanella
  2022-07-10  2:28         ` Rudi Heitbaum
  2022-07-11  8:30         ` Andreas Schwab
@ 2022-07-11  8:55         ` Florian Weimer
  2022-07-11 12:49           ` Adhemerval Zanella
  2 siblings, 1 reply; 26+ messages in thread
From: Florian Weimer @ 2022-07-11  8:55 UTC (permalink / raw)
  To: Adhemerval Zanella via Libc-alpha; +Cc: Andreas Schwab, Adhemerval Zanella

* Adhemerval Zanella via Libc-alpha:

> I am not sure how to handle it, glibc sys/mount.h should be a standalone
> header.

Is it really necessary to keep <sys/mount.h> standalone?  It's not even
a standard interface, and we don't have conform tests for this header as
far as I can see.

So I think the usual __has_include approach should work here, too.

Thanks,
Florian


^ permalink raw reply	[flat|nested] 26+ messages in thread

* Re: [PATCH v7 5/5] linux: Add mount_setattr
  2022-07-11  8:55         ` Florian Weimer
@ 2022-07-11 12:49           ` Adhemerval Zanella
  2022-07-11 12:53             ` Florian Weimer
  0 siblings, 1 reply; 26+ messages in thread
From: Adhemerval Zanella @ 2022-07-11 12:49 UTC (permalink / raw)
  To: Florian Weimer; +Cc: Adhemerval Zanella via Libc-alpha, Andreas Schwab

> On 11 Jul 2022, at 05:55, Florian Weimer <fweimer@redhat.com> wrote:
> 
> * Adhemerval Zanella via Libc-alpha:
> 
>> I am not sure how to handle it, glibc sys/mount.h should be a standalone
>> header.
> 
> Is it really necessary to keep <sys/mount.h> standalone?  It's not even
> a standard interface, and we don't have conform tests for this header as
> far as I can see.
> 
> So I think the usual __has_include approach should work here, too.

The main problem is sys/mount.h defines interfaces for syscall added
in multiple releases.  It means that depending of the kernel version
used by the compiler we will need to add some defines (for instance
fsconfig_command).  There is also a small difference where glibc
header define the MS_* constant as a unnamed enum (not sure if this
affects C++ mangling).

I know that using kernel headers simplify some support, specially sync
with newer releases; but this also adds more complexity where we need
to handle integration outside glibc project.

^ permalink raw reply	[flat|nested] 26+ messages in thread

* Re: [PATCH v7 5/5] linux: Add mount_setattr
  2022-07-11 12:49           ` Adhemerval Zanella
@ 2022-07-11 12:53             ` Florian Weimer
  2022-07-25 15:08               ` Andreas Schwab
  0 siblings, 1 reply; 26+ messages in thread
From: Florian Weimer @ 2022-07-11 12:53 UTC (permalink / raw)
  To: Adhemerval Zanella; +Cc: Adhemerval Zanella via Libc-alpha, Andreas Schwab

* Adhemerval Zanella:

>> On 11 Jul 2022, at 05:55, Florian Weimer <fweimer@redhat.com> wrote:
>> 
>> * Adhemerval Zanella via Libc-alpha:
>> 
>>> I am not sure how to handle it, glibc sys/mount.h should be a standalone
>>> header.
>> 
>> Is it really necessary to keep <sys/mount.h> standalone?  It's not even
>> a standard interface, and we don't have conform tests for this header as
>> far as I can see.
>> 
>> So I think the usual __has_include approach should work here, too.
>
> The main problem is sys/mount.h defines interfaces for syscall added
> in multiple releases.  It means that depending of the kernel version
> used by the compiler we will need to add some defines (for instance
> fsconfig_command).  There is also a small difference where glibc
> header define the MS_* constant as a unnamed enum (not sure if this
> affects C++ mangling).

You are right, I had missed that.

> I know that using kernel headers simplify some support, specially sync
> with newer releases; but this also adds more complexity where we need
> to handle integration outside glibc project.

For openat2, we got a separate header.  Maybe we can request that for
the fsmount interfaces, too?  Than we can do the usual thing just for
<linux/fsmount.h>.  <linux/mount.h> can still include <linux/fsmount.h>,
so the change would be transparent.

Thanks,
Florian


^ permalink raw reply	[flat|nested] 26+ messages in thread

* Re: [PATCH v7 5/5] linux: Add mount_setattr
  2022-07-11 12:53             ` Florian Weimer
@ 2022-07-25 15:08               ` Andreas Schwab
  2022-07-26  0:28                 ` Rudi Heitbaum
  0 siblings, 1 reply; 26+ messages in thread
From: Andreas Schwab @ 2022-07-25 15:08 UTC (permalink / raw)
  To: Florian Weimer; +Cc: Adhemerval Zanella, Adhemerval Zanella via Libc-alpha

There are quite a few packages that fail to build now.

-- 
Andreas Schwab, SUSE Labs, schwab@suse.de
GPG Key fingerprint = 0196 BAD8 1CE9 1970 F4BE  1748 E4D4 88E3 0EEA B9D7
"And now for something completely different."

^ permalink raw reply	[flat|nested] 26+ messages in thread

* Re: [PATCH v7 5/5] linux: Add mount_setattr
  2022-07-25 15:08               ` Andreas Schwab
@ 2022-07-26  0:28                 ` Rudi Heitbaum
  0 siblings, 0 replies; 26+ messages in thread
From: Rudi Heitbaum @ 2022-07-26  0:28 UTC (permalink / raw)
  To: Andreas Schwab; +Cc: Florian Weimer, Adhemerval Zanella via Libc-alpha

Hi All,

As an fyi - LibreELEC (JeOS) is now building and run tested with the
2022-07-22 glibc 2.35.9000 ready for 2.36 release.

These were the changes required.

upstream patches available:
- gcc: enable compile with glibc 2.36
- systemd: enable compile with glibc 2.36

downstream patches:
- hdparm: enable compile with glibc 2.36
- syslinux: enable compile with glibc 2.36
- efivar: enable compile with glibc 2.36
- stress-ng: update to 0.14.03 and enable compile with glibc 2.36

https://github.com/LibreELEC/LibreELEC.tv/pull/6684

On Tue, 26 Jul 2022 at 01:09, Andreas Schwab via Libc-alpha
<libc-alpha@sourceware.org> wrote:
>
> There are quite a few packages that fail to build now.
>
> --
> Andreas Schwab, SUSE Labs, schwab@suse.de
> GPG Key fingerprint = 0196 BAD8 1CE9 1970 F4BE  1748 E4D4 88E3 0EEA B9D7
> "And now for something completely different."

^ permalink raw reply	[flat|nested] 26+ messages in thread

end of thread, other threads:[~2022-07-26  0:29 UTC | newest]

Thread overview: 26+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2022-06-24 19:59 [PATCH v7 0/5] linux: Add new syscalls Adhemerval Zanella
2022-06-24 19:59 ` [PATCH v7 1/5] linux: Add fsconfig Adhemerval Zanella
2022-07-04 21:36   ` Carlos O'Donell
2022-07-11  8:16     ` Fangrui Song
2022-07-11 14:47       ` Carlos O'Donell
2022-06-24 19:59 ` [PATCH v7 2/5] linux: Add fspick Adhemerval Zanella
2022-07-04 21:39   ` Carlos O'Donell
2022-06-24 19:59 ` [PATCH v7 3/5] linux: Add open_tree Adhemerval Zanella
2022-07-04 21:42   ` Carlos O'Donell
2022-06-24 19:59 ` [PATCH v7 4/5] linux: Add tst-mount to check for Linux new mount API Adhemerval Zanella
2022-07-04 21:45   ` Carlos O'Donell
2022-06-24 19:59 ` [PATCH v7 5/5] linux: Add mount_setattr Adhemerval Zanella
2022-07-04 21:51   ` Carlos O'Donell
2022-07-06  9:25     ` Andreas Schwab
2022-07-06 12:21       ` Adhemerval Zanella
2022-07-10  2:28         ` Rudi Heitbaum
2022-07-11 12:51           ` Adhemerval Zanella
2022-07-11 13:13             ` Rudi Heitbaum
2022-07-12 13:11               ` Rudi Heitbaum
2022-07-12 15:33                 ` Adhemerval Zanella Netto
2022-07-11  8:30         ` Andreas Schwab
2022-07-11  8:55         ` Florian Weimer
2022-07-11 12:49           ` Adhemerval Zanella
2022-07-11 12:53             ` Florian Weimer
2022-07-25 15:08               ` Andreas Schwab
2022-07-26  0:28                 ` Rudi Heitbaum

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