diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2012-05-23 18:11:45 -0700 |
---|---|---|
committer | Linus Torvalds <torvalds@linux-foundation.org> | 2012-05-23 18:11:45 -0700 |
commit | f9369910a6225b8d4892c3f20ae740a711cd5ace (patch) | |
tree | 8650ff79d7607bceb35509c028400ecf1c317de0 /kernel/signal.c | |
parent | 05f144a0d5c2207a0349348127f996e104ad7404 (diff) | |
parent | 415d04d08fec74b226c92c1fb54ad117c9c6bac4 (diff) | |
download | op-kernel-dev-f9369910a6225b8d4892c3f20ae740a711cd5ace.zip op-kernel-dev-f9369910a6225b8d4892c3f20ae740a711cd5ace.tar.gz |
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal
Pull first series of signal handling cleanups from Al Viro:
"This is just the first part of the queue (about a half of it);
assorted fixes all over the place in signal handling.
This one ends with all sigsuspend() implementations switched to
generic one (->saved_sigmask-based).
With this, a bunch of assorted old buglets are fixed and most of the
missing bits of NOTIFY_RESUME hookup are in place. Two more fixes sit
in arm and um trees respectively, and there's a couple of broken ones
that need obvious fixes - parisc and avr32 check TIF_NOTIFY_RESUME
only on one of two codepaths; fixes for that will happen in the next
series"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal: (55 commits)
unicore32: if there's no handler we need to restore sigmask, syscall or no syscall
xtensa: add handling of TIF_NOTIFY_RESUME
microblaze: drop 'oldset' argument of do_notify_resume()
microblaze: handle TIF_NOTIFY_RESUME
score: add handling of NOTIFY_RESUME to do_notify_resume()
m68k: add TIF_NOTIFY_RESUME and handle it.
sparc: kill ancient comment in sparc_sigaction()
h8300: missing checks of __get_user()/__put_user() return values
frv: missing checks of __get_user()/__put_user() return values
cris: missing checks of __get_user()/__put_user() return values
powerpc: missing checks of __get_user()/__put_user() return values
sh: missing checks of __get_user()/__put_user() return values
sparc: missing checks of __get_user()/__put_user() return values
avr32: struct old_sigaction is never used
m32r: struct old_sigaction is never used
xtensa: xtensa_sigaction doesn't exist
alpha: tidy signal delivery up
score: don't open-code force_sigsegv()
cris: don't open-code force_sigsegv()
blackfin: don't open-code force_sigsegv()
...
Diffstat (limited to 'kernel/signal.c')
-rw-r--r-- | kernel/signal.c | 25 |
1 files changed, 16 insertions, 9 deletions
diff --git a/kernel/signal.c b/kernel/signal.c index 21ebe75..4dbf00d 100644 --- a/kernel/signal.c +++ b/kernel/signal.c @@ -3232,6 +3232,21 @@ SYSCALL_DEFINE0(pause) #endif +#ifdef HAVE_SET_RESTORE_SIGMASK +int sigsuspend(sigset_t *set) +{ + sigdelsetmask(set, sigmask(SIGKILL)|sigmask(SIGSTOP)); + + current->saved_sigmask = current->blocked; + set_current_blocked(set); + + current->state = TASK_INTERRUPTIBLE; + schedule(); + set_restore_sigmask(); + return -ERESTARTNOHAND; +} +#endif + #ifdef __ARCH_WANT_SYS_RT_SIGSUSPEND /** * sys_rt_sigsuspend - replace the signal mask for a value with the @@ -3249,15 +3264,7 @@ SYSCALL_DEFINE2(rt_sigsuspend, sigset_t __user *, unewset, size_t, sigsetsize) if (copy_from_user(&newset, unewset, sizeof(newset))) return -EFAULT; - sigdelsetmask(&newset, sigmask(SIGKILL)|sigmask(SIGSTOP)); - - current->saved_sigmask = current->blocked; - set_current_blocked(&newset); - - current->state = TASK_INTERRUPTIBLE; - schedule(); - set_restore_sigmask(); - return -ERESTARTNOHAND; + return sigsuspend(&newset); } #endif /* __ARCH_WANT_SYS_RT_SIGSUSPEND */ |