[03/15] Use msgsnd syscall for Linux implementation
Commit Message
This patch add a direct call to msgsnd syscall if it is defined by
kernel headers.
hecked on x86_64, i686, powerpc64le, aarch64, and armhf.
* sysdeps/unix/sysv/linux/msgsnd.c (__libc_msgsnd): Use msgsnd syscall
if defined.
---
ChangeLog | 3 +++
sysdeps/unix/sysv/linux/msgsnd.c | 7 ++++---
2 files changed, 7 insertions(+), 3 deletions(-)
@@ -16,17 +16,18 @@
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
-#include <errno.h>
#include <sys/msg.h>
#include <ipc_priv.h>
-
#include <sysdep-cancel.h>
-#include <sys/syscall.h>
int
__libc_msgsnd (int msqid, const void *msgp, size_t msgsz, int msgflg)
{
+#ifdef __NR_msgsnd
+ return SYSCALL_CANCEL (msgsnd, msqid, msgp, msgsz, msgflg);
+#else
return SYSCALL_CANCEL (ipc, IPCOP_msgsnd, msqid, msgsz, msgflg,
(void *) msgp);
+#endif
}
weak_alias (__libc_msgsnd, msgsnd)