diff options
| author | Al Viro | 2017-05-31 04:46:17 -0400 |
|---|---|---|
| committer | Al Viro | 2017-06-09 23:57:12 -0400 |
| commit | 1b3c872c8342803d0fcd8042e4e007d173191db6 (patch) | |
| tree | 3deaa93558a8ec380e4091d2b8061462f4dab887 /kernel/signal.c | |
| parent | 464d62421cb8b2a6812dcb8c45184ff17b1bc5da (diff) | |
rt_sigtimedwait(): move compat to native
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'kernel/signal.c')
| -rw-r--r-- | kernel/signal.c | 36 |
1 files changed, 35 insertions, 1 deletions
diff --git a/kernel/signal.c b/kernel/signal.c index 6237f492adfc..fe5b3608c31c 100644 --- a/kernel/signal.c +++ b/kernel/signal.c @@ -2768,7 +2768,7 @@ int copy_siginfo_to_user(siginfo_t __user *to, const siginfo_t *from) * @info: if non-null, the signal's siginfo is returned here * @ts: upper bound on process time suspension */ -int do_sigtimedwait(const sigset_t *which, siginfo_t *info, +static int do_sigtimedwait(const sigset_t *which, siginfo_t *info, const struct timespec *ts) { ktime_t *to = NULL, timeout = KTIME_MAX; @@ -2857,6 +2857,40 @@ SYSCALL_DEFINE4(rt_sigtimedwait, const sigset_t __user *, uthese, return ret; } +#ifdef CONFIG_COMPAT +COMPAT_SYSCALL_DEFINE4(rt_sigtimedwait, compat_sigset_t __user *, uthese, + struct compat_siginfo __user *, uinfo, + struct compat_timespec __user *, uts, compat_size_t, sigsetsize) +{ + compat_sigset_t s32; + sigset_t s; + struct timespec t; + siginfo_t info; + long ret; + + if (sigsetsize != sizeof(sigset_t)) + return -EINVAL; + + if (copy_from_user(&s32, uthese, sizeof(compat_sigset_t))) + return -EFAULT; + sigset_from_compat(&s, &s32); + + if (uts) { + if (compat_get_timespec(&t, uts)) + return -EFAULT; + } + + ret = do_sigtimedwait(&s, &info, uts ? &t : NULL); + + if (ret > 0 && uinfo) { + if (copy_siginfo_to_user32(uinfo, &info)) + ret = -EFAULT; + } + + return ret; +} +#endif + /** * sys_kill - send a signal to a process * @pid: the PID of the process |