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signal/timer/event: timerfd compat code

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This patch implements the necessary compat code for the timerfd system call.

Signed-off-by: Davide Libenzi <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Davide Libenzi 2007-05-10 22:23:18 -07:00 • committed by Linus Torvalds
commit 83f5d12669
3 changed files with 32 additions and 4 deletions
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23
fs/compat.c
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@ -2225,3 +2225,26 @@ asmlinkage long compat_sys_signalfd(int ufd,
#endif /* CONFIG_SIGNALFD */
#ifdef CONFIG_TIMERFD
asmlinkage long compat_sys_timerfd(int ufd, int clockid, int flags,
const struct compat_itimerspec __user *utmr)
{
long res;
struct itimerspec t;
struct itimerspec __user *ut;
res = -EFAULT;
if (get_compat_itimerspec(&t, utmr))
goto err_exit;
ut = compat_alloc_user_space(sizeof(*ut));
if (copy_to_user(ut, &t, sizeof(t)) )
goto err_exit;
res = sys_timerfd(ufd, clockid, flags, ut);
err_exit:
return res;
}
#endif /* CONFIG_TIMERFD */