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* [glibc] Linux: Assume and consolidate getsockname wire-up syscall
@ 2023-02-20 16:29 Adhemerval Zanella
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From: Adhemerval Zanella @ 2023-02-20 16:29 UTC (permalink / raw)
To: glibc-cvs
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=a7bf5f4e699a77529171a5fd3eccd842c5c29827
commit a7bf5f4e699a77529171a5fd3eccd842c5c29827
Author: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Date: Tue Oct 18 16:28:44 2022 -0300
Linux: Assume and consolidate getsockname 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/getsockname.c | 7 +------
sysdeps/unix/sysv/linux/i386/kernel-features.h | 2 +-
sysdeps/unix/sysv/linux/kernel-features.h | 1 +
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 | 6 ++++++
10 files changed, 11 insertions(+), 13 deletions(-)
diff --git a/sysdeps/unix/sysv/linux/generic/syscalls.list b/sysdeps/unix/sysv/linux/generic/syscalls.list
index 7dbfde0dae..e89ce91ac0 100644
--- a/sysdeps/unix/sysv/linux/generic/syscalls.list
+++ b/sysdeps/unix/sysv/linux/generic/syscalls.list
@@ -1,5 +1,4 @@
# File name Caller Syscall name # args Strong name Weak names
# Socket APIs
-getsockname - getsockname i:ipp __getsockname getsockname
getpeername - getpeername i:ipp __getpeername getpeername
diff --git a/sysdeps/unix/sysv/linux/getsockname.c b/sysdeps/unix/sysv/linux/getsockname.c
index 38e6f2dac6..61973fa5cd 100644
--- a/sysdeps/unix/sysv/linux/getsockname.c
+++ b/sysdeps/unix/sysv/linux/getsockname.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
__getsockname (int fd, __SOCKADDR_ARG addr, socklen_t *len)
{
#ifdef __ASSUME_GETSOCKNAME_SYSCALL
- return INLINE_SYSCALL (getsockname, 3, fd, addr.__sockaddr__, len);
+ return INLINE_SYSCALL_CALL (getsockname, fd, addr.__sockaddr__, len);
#else
return SOCKETCALL (getsockname, fd, addr.__sockaddr__, len);
#endif
diff --git a/sysdeps/unix/sysv/linux/i386/kernel-features.h b/sysdeps/unix/sysv/linux/i386/kernel-features.h
index 334a31a0e5..1c5cbd3351 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_GETSOCKNAME_SYSCALL 1
# define __ASSUME_GETPEERNAME_SYSCALL 1
#endif
@@ -42,6 +41,7 @@
# undef __ASSUME_SOCKETPAIR_SYSCALL
# undef __ASSUME_LISTEN_SYSCALL
# undef __ASSUME_SHUTDOWN_SYSCALL
+# undef __ASSUME_GETSOCKNAME_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 4b5c4afbc1..4a4d624aeb 100644
--- a/sysdeps/unix/sysv/linux/kernel-features.h
+++ b/sysdeps/unix/sysv/linux/kernel-features.h
@@ -84,6 +84,7 @@
#define __ASSUME_SOCKETPAIR_SYSCALL 1
#define __ASSUME_LISTEN_SYSCALL 1
#define __ASSUME_SHUTDOWN_SYSCALL 1
+#define __ASSUME_GETSOCKNAME_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/m68k/kernel-features.h b/sysdeps/unix/sysv/linux/m68k/kernel-features.h
index 2d9b225249..e57f09a74e 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_GETSOCKNAME_SYSCALL 1
# define __ASSUME_GETPEERNAME_SYSCALL 1
#endif
@@ -44,6 +43,7 @@
# undef __ASSUME_SOCKETPAIR_SYSCALL
# undef __ASSUME_LISTEN_SYSCALL
# undef __ASSUME_SHUTDOWN_SYSCALL
+# undef __ASSUME_GETSOCKNAME_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 e5bfa05491..10eff56743 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_GETSOCKNAME_SYSCALL 1
#define __ASSUME_GETPEERNAME_SYSCALL 1
#define __ASSUME_SEND_SYSCALL 1
#define __ASSUME_RECV_SYSCALL 1
diff --git a/sysdeps/unix/sysv/linux/powerpc/kernel-features.h b/sysdeps/unix/sysv/linux/powerpc/kernel-features.h
index 2b3cbd05c1..231742a5c3 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_GETSOCKNAME_SYSCALL 1
#define __ASSUME_GETPEERNAME_SYSCALL 1
#define __ASSUME_SEND_SYSCALL 1
#define __ASSUME_RECV_SYSCALL 1
diff --git a/sysdeps/unix/sysv/linux/s390/kernel-features.h b/sysdeps/unix/sysv/linux/s390/kernel-features.h
index 7ca9393942..058b211e55 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_GETSOCKNAME_SYSCALL 1
# define __ASSUME_GETPEERNAME_SYSCALL 1
#endif
@@ -44,6 +43,7 @@
# undef __ASSUME_SOCKETPAIR_SYSCALL
# undef __ASSUME_LISTEN_SYSCALL
# undef __ASSUME_SHUTDOWN_SYSCALL
+# undef __ASSUME_GETSOCKNAME_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 931f1c8834..76e2de7bf5 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_GETSOCKNAME_SYSCALL 1
#define __ASSUME_GETPEERNAME_SYSCALL 1
#define __ASSUME_SEND_SYSCALL 1
#define __ASSUME_RECV_SYSCALL 1
diff --git a/sysdeps/unix/sysv/linux/sparc/kernel-features.h b/sysdeps/unix/sysv/linux/sparc/kernel-features.h
index 279fa93a3b..f71aa8ca38 100644
--- a/sysdeps/unix/sysv/linux/sparc/kernel-features.h
+++ b/sysdeps/unix/sysv/linux/sparc/kernel-features.h
@@ -42,6 +42,12 @@
# undef __ASSUME_SETSOCKOPT_SYSCALL
#endif
+/* There syscalls were added for 32-bit in compat syscall table only
+ in 4.20 (but present for 64-bit in all supported kernel versions). */
+#if !defined __arch64__ && __LINUX_KERNEL_VERSION < 0x041400
+# undef __ASSUME_GETSOCKNAME_SYSCALL
+#endif
+
/* These syscalls were added for both 32-bit and 64-bit in 4.4. */
#if __LINUX_KERNEL_VERSION < 0x040400
# undef __ASSUME_BIND_SYSCALL
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