[PATCH 3/3] lutimesat: actual syscall and wire-up on i386

[Alexey Dobriyan]

lutimesat(2) does everything futimesat(2) does except it doesn't follow
symlinks.

It could be used by tar(1) and cp(1).

FreeBSD and NetBSD have lutimes(2) which can be emulated by C library:

        lutimesat(AT_FDCWD, filename, utimes)

Closes http://bugme.osdl.org/show_bug.cgi?id=4433

Signed-off-by: Alexey Dobriyan <[EMAIL PROTECTED]>
---

 arch/i386/kernel/syscall_table.S |    1 +
 fs/utimes.c                      |    9 +++++++++
 include/asm-i386/unistd.h        |    3 ++-
 3 files changed, 12 insertions(+), 1 deletion(-)

--- a/arch/i386/kernel/syscall_table.S
+++ b/arch/i386/kernel/syscall_table.S
@@ -319,3 +319,4 @@ ENTRY(sys_call_table)
        .long sys_move_pages
        .long sys_getcpu
        .long sys_epoll_pwait
+       .long sys_lutimesat             /* 320 */
--- a/fs/utimes.c
+++ b/fs/utimes.c
@@ -105,3 +105,12 @@ asmlinkage long sys_utimes(char __user *
 {
        return sys_futimesat(AT_FDCWD, filename, utimes);
 }
+
+asmlinkage long sys_lutimesat(int dfd, char __user *filename, struct timeval 
__user *utimes)
+{
+       struct timeval times[2];
+
+       if (utimes && copy_from_user(&times, utimes, sizeof(times)))
+               return -EFAULT;
+       return do_utimes(dfd, filename, utimes ? times : NULL, 
AT_SYMLINK_NOFOLLOW);
+}
--- a/include/asm-i386/unistd.h
+++ b/include/asm-i386/unistd.h
@@ -325,10 +325,11 @@ #define __NR_vmsplice             316
 #define __NR_move_pages                317
 #define __NR_getcpu            318
 #define __NR_epoll_pwait       319
+#define __NR_lutimesat         320
 
 #ifdef __KERNEL__
 
-#define NR_syscalls 320
+#define NR_syscalls 321
 
 #define __ARCH_WANT_IPC_PARSE_VERSION
 #define __ARCH_WANT_OLD_READDIR

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [EMAIL PROTECTED]
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/