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Use shmget syscall for linux implementation

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this patch add a direct call to shmget syscall if it is supported by
kernel features.

Checked on x86_64, i686, powerpc64le, aarch64, and armhf.

	* sysdeps/unix/sysv/linux/alpha/syscalls.list (shmget): Remove.
	* sysdeps/unix/sysv/linux/arm/syscalls.list (shmget): Likewise.
	* sysdeps/unix/sysv/linux/generic/syscalls.list (shmget): Likewise.
	* sysdeps/unix/sysv/linux/hppa/syscalls.list (shmget): Likewise.
	* sysdeps/unix/sysv/linux/ia64/syscalls.list (shmget): Likewise.
	* sysdeps/unix/sysv/linux/microblaze/syscalls.list (shmget): Likewise.
	* sysdeps/unix/sysv/linux/mips/mips64/syscalls.list (shmget):
	Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-64/syscalls.list (shmget):
	Likewise.
	* sysdeps/unix/sysv/linux/x86_64/syscalls.list (shmget): Likewise.
	* sysdeps/unix/sysv/linux/shmget.c (shmget): Use shmget syscall if it
	is defined.
This commit is contained in:
Adhemerval Zanella
2016-10-26 18:24:53 -02:00
parent 214f017fdf
commit 50a6b4e0e4
11 changed files with 21 additions and 35 deletions
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13
sysdeps/unix/sysv/linux/shmget.c
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@ -16,13 +16,10 @@
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#include <errno.h>
#include <sys/shm.h>
#include <sys/msg.h>
#include <ipc_priv.h>
#include <stdlib.h> /* for definition of NULL */
#include <sysdep.h>
#include <sys/syscall.h>
#include <errno.h>
/* Return an identifier for an shared memory segment of at least size SIZE
which is associated with KEY. */
@ -30,5 +27,9 @@
int
shmget (key_t key, size_t size, int shmflg)
{
return INLINE_SYSCALL (ipc, 5, IPCOP_shmget, key, size, shmflg, NULL);
#ifdef __ASSUME_DIRECT_SYSVIPC_SYSCALLS
return INLINE_SYSCALL_CALL (shmget, key, size, shmflg, NULL);
#else
return INLINE_SYSCALL_CALL (ipc, IPCOP_shmget, key, size, shmflg, NULL);
#endif
}