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From: Alexey Dobriyan <adobriyan@openvz.org>
To: akpm@osdl.org
Cc: devel@openvz.org, linux-kernel@vger.kernel.org
Subject: [PATCH 3/3] lutimesat: actual syscall and wire-up on i386
Date: Fri, 26 Jan 2007 14:23:45 +0300	[thread overview]
Message-ID: <20070126112345.GC11128@localhost.sw.ru> (raw)

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 <adobriyan@openvz.org>
---

 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


             reply	other threads:[~2007-01-26 11:17 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-01-26 11:23 Alexey Dobriyan [this message]
2007-01-26 20:39 ` Andrew Morton
2007-01-26 20:45   ` Ulrich Drepper
2007-01-29 11:05     ` Alexey Dobriyan
2007-01-29 15:07       ` Ulrich Drepper
2007-01-29 16:02         ` Alexey Dobriyan
2007-01-28  7:59 ` H. Peter Anvin
2007-01-29  9:58   ` Alexey Dobriyan

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