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| author | Anton Blanchard <anton@samba.org> | 2007-10-15 16:06:04 -0500 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2007-10-18 22:54:18 +0200 |
| commit | 04c227140fed77587432667a574b14736a06dd7f (patch) | |
| tree | 56cc470fae9f0d78d499c9ab2ab526acb35440e4 /kernel/posix-timers.c | |
| parent | d85714d81cc0408daddb68c10f7fd69eafe7c213 (diff) | |
| download | linux-04c227140fed77587432667a574b14736a06dd7f.tar.gz linux-04c227140fed77587432667a574b14736a06dd7f.tar.bz2 linux-04c227140fed77587432667a574b14736a06dd7f.zip | |
hrtimer: Rework hrtimer_nanosleep to make sys_compat_nanosleep easier
Pull the copy_to_user out of hrtimer_nanosleep and into the callers
(common_nsleep, sys_nanosleep) in preparation for converting
compat_sys_nanosleep to use hrtimers.
Signed-off-by: Anton Blanchard <anton@samba.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'kernel/posix-timers.c')
| -rw-r--r-- | kernel/posix-timers.c | 17 |
1 files changed, 14 insertions, 3 deletions
diff --git a/kernel/posix-timers.c b/kernel/posix-timers.c index d71ed09fe1dd..d11f579d189a 100644 --- a/kernel/posix-timers.c +++ b/kernel/posix-timers.c @@ -981,9 +981,20 @@ sys_clock_getres(const clockid_t which_clock, struct timespec __user *tp) static int common_nsleep(const clockid_t which_clock, int flags, struct timespec *tsave, struct timespec __user *rmtp) { - return hrtimer_nanosleep(tsave, rmtp, flags & TIMER_ABSTIME ? - HRTIMER_MODE_ABS : HRTIMER_MODE_REL, - which_clock); + struct timespec rmt; + int ret; + + ret = hrtimer_nanosleep(tsave, rmtp ? &rmt : NULL, + flags & TIMER_ABSTIME ? + HRTIMER_MODE_ABS : HRTIMER_MODE_REL, + which_clock); + + if (ret && rmtp) { + if (copy_to_user(rmtp, &rmt, sizeof(*rmtp))) + return -EFAULT; + } + + return ret; } asmlinkage long |