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Date: Tue, 27 Feb 2007 14:56:13 +0300
From: Alexey Dobriyan <adobriyan@...nvz.org>
To: Stephen Rothwell <sfr@...b.auug.org.au>
Cc: akpm@...l.org, linux-kernel@...r.kernel.org, devel@...nvz.org,
ak@...e.de, linux-arch@...r.kernel.org
Subject: Re: [PATCH 4/3] lutimesat: compat syscall and wire up on x86_64
On Tue, Feb 27, 2007 at 02:06:24PM +1100, Stephen Rothwell wrote:
> On Mon, 26 Feb 2007 19:50:24 +0300 Alexey Dobriyan <adobriyan@...nvz.org> wrote:
> >
> > +asmlinkage long compat_sys_lutimesat(int dfd, char __user *filename, struct compat_timespec __user *utimes)
> > +{
> > + struct timespec ts[2];
> > +
> > + if (utimes) {
> > + if (get_user(ts[0].tv_sec, &utimes[0].tv_sec) ||
> > + get_user(ts[0].tv_nsec, &utimes[0].tv_nsec) ||
> > + get_user(ts[1].tv_sec, &utimes[1].tv_sec) ||
> > + get_user(ts[1].tv_nsec, &utimes[1].tv_nsec))
> > + return -EFAULT;
>
> if (get_compat_timespec(&ts[0], &utimes[0]) ||
> get_compat_timespec(&ts[1], &utimes[1]))
> return -EFAULT;
We have it? Thank you!
[PATCH 4/3] lutimesat: compat syscall and wire up on x86_64
[Apply after:
lutimesat-simplify-utime2.patch
lutimesat-extend-do_utimes-with-flags.patch
lutimesat-actual-syscall-and-wire-up-on-i386.patch
Tweak compat syscall number to match normal syscall number if needed.]
Signed-off-by: Alexey Dobriyan <adobriyan@...nvz.org>
---
arch/x86_64/ia32/ia32entry.S | 1 +
fs/compat.c | 12 ++++++++++++
fs/utimes.c | 2 +-
include/linux/time.h | 1 +
4 files changed, 15 insertions(+), 1 deletion(-)
--- a/arch/x86_64/ia32/ia32entry.S
+++ b/arch/x86_64/ia32/ia32entry.S
@@ -719,4 +719,5 @@ #endif
.quad compat_sys_move_pages
.quad sys_getcpu
.quad sys_epoll_pwait
+ .quad compat_sys_lutimesat /* 320 */
ia32_syscall_end:
--- a/fs/compat.c
+++ b/fs/compat.c
@@ -109,6 +109,18 @@ asmlinkage long compat_sys_utimes(char _
return compat_sys_futimesat(AT_FDCWD, filename, t);
}
+asmlinkage long compat_sys_lutimesat(int dfd, char __user *filename, struct compat_timespec __user *utimes)
+{
+ struct timespec ts[2];
+
+ if (utimes) {
+ if (get_compat_timespec(&ts[0], &utimes[0]) ||
+ get_compat_timespec(&ts[1], &utimes[1]))
+ return -EFAULT;
+ }
+ return do_utimes_nsec(dfd, filename, utimes ? ts : NULL, AT_SYMLINK_NOFOLLOW);
+}
+
asmlinkage long compat_sys_newstat(char __user * filename,
struct compat_stat __user *statbuf)
{
--- a/fs/utimes.c
+++ b/fs/utimes.c
@@ -40,7 +40,7 @@ #endif
* must be owner or have write permission.
* Else, update from *times, must be owner or super user.
*/
-static long do_utimes_nsec(int dfd, char __user *filename, struct timespec *times, int flags)
+long do_utimes_nsec(int dfd, char __user *filename, struct timespec *times, int flags)
{
int error = -EINVAL;
struct nameidata nd;
--- a/include/linux/time.h
+++ b/include/linux/time.h
@@ -110,6 +110,7 @@ extern int do_settimeofday(struct timesp
extern int do_sys_settimeofday(struct timespec *tv, struct timezone *tz);
#define do_posix_clock_monotonic_gettime(ts) ktime_get_ts(ts)
extern long do_utimes(int dfd, char __user *filename, struct timeval *times, int flags);
+extern long do_utimes_nsec(int dfd, char __user *filename, struct timespec *times, int flags);
struct itimerval;
extern int do_setitimer(int which, struct itimerval *value,
struct itimerval *ovalue);
-
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