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* [glibc] Linux: Assume and consolidate listen wire-up syscall
@ 2022-12-07 19:16 Adhemerval Zanella
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From: Adhemerval Zanella @ 2022-12-07 19:16 UTC (permalink / raw)
To: glibc-cvs
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=377a14a22a202a0a161778b31a86d3cb6958dc43
commit 377a14a22a202a0a161778b31a86d3cb6958dc43
Author: Adhemerval Zanella Netto <adhemerval.zanella@linaro.org>
Date: Wed Oct 19 19:14:24 2022 -0300
Linux: Assume and consolidate listen wire-up syscall
And disable if kernel does not support it.
Checked on x86_64-linux-gnu and i686-linux-gnu.
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
Tested-by: Carlos O'Donell <carlos@redhat.com>
Diff:
---
sysdeps/unix/sysv/linux/generic/syscalls.list | 1 -
sysdeps/unix/sysv/linux/i386/kernel-features.h | 2 +-
sysdeps/unix/sysv/linux/kernel-features.h | 1 +
sysdeps/unix/sysv/linux/listen.c | 7 +------
sysdeps/unix/sysv/linux/m68k/kernel-features.h | 2 +-
sysdeps/unix/sysv/linux/microblaze/kernel-features.h | 1 -
sysdeps/unix/sysv/linux/powerpc/kernel-features.h | 1 -
sysdeps/unix/sysv/linux/s390/kernel-features.h | 2 +-
sysdeps/unix/sysv/linux/sh/kernel-features.h | 1 -
sysdeps/unix/sysv/linux/sparc/kernel-features.h | 5 +----
10 files changed, 6 insertions(+), 17 deletions(-)
diff --git a/sysdeps/unix/sysv/linux/generic/syscalls.list b/sysdeps/unix/sysv/linux/generic/syscalls.list
index 95ed2cbac8..706893f245 100644
--- a/sysdeps/unix/sysv/linux/generic/syscalls.list
+++ b/sysdeps/unix/sysv/linux/generic/syscalls.list
@@ -1,7 +1,6 @@
# File name Caller Syscall name # args Strong name Weak names
# Socket APIs
-listen - listen i:ii __listen listen
getsockname - getsockname i:ipp __getsockname getsockname
getpeername - getpeername i:ipp __getpeername getpeername
shutdown - shutdown i:ii __shutdown shutdown
diff --git a/sysdeps/unix/sysv/linux/i386/kernel-features.h b/sysdeps/unix/sysv/linux/i386/kernel-features.h
index 8a7fe47602..a79ec679cc 100644
--- a/sysdeps/unix/sysv/linux/i386/kernel-features.h
+++ b/sysdeps/unix/sysv/linux/i386/kernel-features.h
@@ -19,7 +19,6 @@
/* Direct socketcalls available with kernel 4.3. */
#if __LINUX_KERNEL_VERSION >= 0x040300
-# define __ASSUME_LISTEN_SYSCALL 1
# define __ASSUME_GETSOCKNAME_SYSCALL 1
# define __ASSUME_GETPEERNAME_SYSCALL 1
# define __ASSUME_SHUTDOWN_SYSCALL 1
@@ -41,6 +40,7 @@
# undef __ASSUME_BIND_SYSCALL
# undef __ASSUME_SOCKET_SYSCALL
# undef __ASSUME_SOCKETPAIR_SYSCALL
+# undef __ASSUME_LISTEN_SYSCALL
#endif
/* i686 only supports ipc syscall before 5.1. */
diff --git a/sysdeps/unix/sysv/linux/kernel-features.h b/sysdeps/unix/sysv/linux/kernel-features.h
index fd44b39cf4..d1769b2d99 100644
--- a/sysdeps/unix/sysv/linux/kernel-features.h
+++ b/sysdeps/unix/sysv/linux/kernel-features.h
@@ -82,6 +82,7 @@
#define __ASSUME_BIND_SYSCALL 1
#define __ASSUME_SOCKET_SYSCALL 1
#define __ASSUME_SOCKETPAIR_SYSCALL 1
+#define __ASSUME_LISTEN_SYSCALL 1
/* Support for SysV IPC through wired syscalls. All supported architectures
either support ipc syscall and/or all the ipc correspondent syscalls. */
diff --git a/sysdeps/unix/sysv/linux/listen.c b/sysdeps/unix/sysv/linux/listen.c
index 8d7ff85edf..e563e4df6c 100644
--- a/sysdeps/unix/sysv/linux/listen.c
+++ b/sysdeps/unix/sysv/linux/listen.c
@@ -15,19 +15,14 @@
License along with the GNU C Library; if not, see
<https://www.gnu.org/licenses/>. */
-#include <errno.h>
-#include <signal.h>
#include <sys/socket.h>
-
#include <socketcall.h>
-#include <kernel-features.h>
-#include <sys/syscall.h>
int
listen (int fd, int backlog)
{
#ifdef __ASSUME_LISTEN_SYSCALL
- return INLINE_SYSCALL (listen, 2, fd, backlog);
+ return INLINE_SYSCALL_CALL (listen, fd, backlog);
#else
return SOCKETCALL (listen, fd, backlog);
#endif
diff --git a/sysdeps/unix/sysv/linux/m68k/kernel-features.h b/sysdeps/unix/sysv/linux/m68k/kernel-features.h
index 46b3045b56..a65fa63c5e 100644
--- a/sysdeps/unix/sysv/linux/m68k/kernel-features.h
+++ b/sysdeps/unix/sysv/linux/m68k/kernel-features.h
@@ -19,7 +19,6 @@
/* Direct socketcalls available with kernel 4.3. */
#if __LINUX_KERNEL_VERSION >= 0x040300
-# define __ASSUME_LISTEN_SYSCALL 1
# define __ASSUME_GETSOCKNAME_SYSCALL 1
# define __ASSUME_GETPEERNAME_SYSCALL 1
# define __ASSUME_SHUTDOWN_SYSCALL 1
@@ -43,6 +42,7 @@
# undef __ASSUME_BIND_SYSCALL
# undef __ASSUME_SOCKET_SYSCALL
# undef __ASSUME_SOCKETPAIR_SYSCALL
+# undef __ASSUME_LISTEN_SYSCALL
#endif
/* No support for PI futexes or robust mutexes before 3.10 for m68k. */
diff --git a/sysdeps/unix/sysv/linux/microblaze/kernel-features.h b/sysdeps/unix/sysv/linux/microblaze/kernel-features.h
index 198ff3209d..e19e6bb6ba 100644
--- a/sysdeps/unix/sysv/linux/microblaze/kernel-features.h
+++ b/sysdeps/unix/sysv/linux/microblaze/kernel-features.h
@@ -19,7 +19,6 @@
/* All supported kernel versions for MicroBlaze have these syscalls. */
#define __ASSUME_CONNECT_SYSCALL 1
-#define __ASSUME_LISTEN_SYSCALL 1
#define __ASSUME_GETSOCKNAME_SYSCALL 1
#define __ASSUME_GETPEERNAME_SYSCALL 1
#define __ASSUME_SEND_SYSCALL 1
diff --git a/sysdeps/unix/sysv/linux/powerpc/kernel-features.h b/sysdeps/unix/sysv/linux/powerpc/kernel-features.h
index 72ec2df178..eb73a91a5d 100644
--- a/sysdeps/unix/sysv/linux/powerpc/kernel-features.h
+++ b/sysdeps/unix/sysv/linux/powerpc/kernel-features.h
@@ -19,7 +19,6 @@
/* New syscalls added for PowerPC in 2.6.37. */
#define __ASSUME_CONNECT_SYSCALL 1
-#define __ASSUME_LISTEN_SYSCALL 1
#define __ASSUME_GETSOCKNAME_SYSCALL 1
#define __ASSUME_GETPEERNAME_SYSCALL 1
#define __ASSUME_SEND_SYSCALL 1
diff --git a/sysdeps/unix/sysv/linux/s390/kernel-features.h b/sysdeps/unix/sysv/linux/s390/kernel-features.h
index 01fc98e9ab..3daee3f132 100644
--- a/sysdeps/unix/sysv/linux/s390/kernel-features.h
+++ b/sysdeps/unix/sysv/linux/s390/kernel-features.h
@@ -19,7 +19,6 @@
/* Direct socketcalls available with kernel 4.3. */
#if __LINUX_KERNEL_VERSION >= 0x040300
-# define __ASSUME_LISTEN_SYSCALL 1
# define __ASSUME_GETSOCKNAME_SYSCALL 1
# define __ASSUME_GETPEERNAME_SYSCALL 1
# define __ASSUME_SHUTDOWN_SYSCALL 1
@@ -43,6 +42,7 @@
# undef __ASSUME_BIND_SYSCALL
# undef __ASSUME_SOCKET_SYSCALL
# undef __ASSUME_SOCKETPAIR_SYSCALL
+# undef __ASSUME_LISTEN_SYSCALL
#endif
/* s390 only supports ipc syscall before 5.1. */
diff --git a/sysdeps/unix/sysv/linux/sh/kernel-features.h b/sysdeps/unix/sysv/linux/sh/kernel-features.h
index b18314a9cd..23eadf84e0 100644
--- a/sysdeps/unix/sysv/linux/sh/kernel-features.h
+++ b/sysdeps/unix/sysv/linux/sh/kernel-features.h
@@ -24,7 +24,6 @@
/* These syscalls were added for SH in 2.6.37. */
#define __ASSUME_CONNECT_SYSCALL 1
-#define __ASSUME_LISTEN_SYSCALL 1
#define __ASSUME_GETSOCKNAME_SYSCALL 1
#define __ASSUME_GETPEERNAME_SYSCALL 1
#define __ASSUME_SEND_SYSCALL 1
diff --git a/sysdeps/unix/sysv/linux/sparc/kernel-features.h b/sysdeps/unix/sysv/linux/sparc/kernel-features.h
index f43e5c384f..7070aaa1ae 100644
--- a/sysdeps/unix/sysv/linux/sparc/kernel-features.h
+++ b/sysdeps/unix/sysv/linux/sparc/kernel-features.h
@@ -45,12 +45,9 @@
#endif
/* These syscalls were added for both 32-bit and 64-bit in 4.4. */
-#if __LINUX_KERNEL_VERSION >= 0x040400
-# define __ASSUME_LISTEN_SYSCALL 1
-#endif
-
#if __LINUX_KERNEL_VERSION < 0x040400
# undef __ASSUME_BIND_SYSCALL
+# undef __ASSUME_LISTEN_SYSCALL
#endif
#ifdef __arch64__
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