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[13/15] Use shmdt syscall for linux implementation

Message ID 1478010323-13076-14-git-send-email-adhemerval.zanella@linaro.org
State Superseded
Headers show

Commit Message

Adhemerval Zanella Netto Nov. 1, 2016, 2:25 p.m. UTC 
this patch add a direct call to shmdt syscall if it is defined by
kernel headers.

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

	* sysdeps/unix/sysv/linux/shmdt.c (shmdt): Use shmdt syscall if it is
	defined.
---
 ChangeLog                       |  3 +++
 sysdeps/unix/sysv/linux/shmdt.c | 12 +++++++-----
 2 files changed, 10 insertions(+), 5 deletions(-)

-- 
2.7.4
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Patch

diff --git a/sysdeps/unix/sysv/linux/shmdt.c b/sysdeps/unix/sysv/linux/shmdt.c
index 7224d6f..da5a881 100644
--- a/sysdeps/unix/sysv/linux/shmdt.c
+++ b/sysdeps/unix/sysv/linux/shmdt.c
@@ -16,12 +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 <sysdep.h>
-#include <sys/syscall.h>
+#include <errno.h>
 
 /* Detach shared memory segment starting at address specified by SHMADDR
    from the caller's data segment.  */
@@ -29,5 +27,9 @@ 
 int
 shmdt (const void *shmaddr)
 {
-  return INLINE_SYSCALL (ipc, 5, IPCOP_shmdt, 0, 0, 0, (void *) shmaddr);
+#ifdef __NR_shmdt
+  return INLINE_SYSCALL_CALL (shmdt, 0, 0, 0, shmaddr);
+#else
+  return INLINE_SYSCALL_CALL (ipc, IPCOP_shmdt, 0, 0, 0, shmaddr);
+#endif
 }