[RFC PATCH 01/38] chmod: prefer fchmodat syscall

Jonas Bonn jonas at southpole.se
Tue Sep 6 08:30:25 UTC 2011


Signed-off-by: Jonas Bonn <jonas at southpole.se>
---
 libc/sysdeps/linux/common/chmod.c |    9 +++++++++
 1 files changed, 9 insertions(+), 0 deletions(-)

diff --git a/libc/sysdeps/linux/common/chmod.c b/libc/sysdeps/linux/common/chmod.c
index 871e023..c60456f 100644
--- a/libc/sysdeps/linux/common/chmod.c
+++ b/libc/sysdeps/linux/common/chmod.c
@@ -9,8 +9,16 @@
 
 #include <sys/syscall.h>
 #include <sys/stat.h>
+#include <fcntl.h>
+#include <unistd.h>
 
+#ifdef __NR_fchmodat
+int chmod(const char *path, mode_t mode)
+{
+	return fchmodat(AT_FDCWD, path, mode, 0);
+}
 
+#else
 #define __NR___syscall_chmod __NR_chmod
 static __inline__ _syscall2(int, __syscall_chmod, const char *, path, __kernel_mode_t, mode)
 
@@ -18,4 +26,5 @@ int chmod(const char *path, mode_t mode)
 {
 	return __syscall_chmod(path, mode);
 }
+#endif
 libc_hidden_def(chmod)
-- 
1.7.5.4



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