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authorDavid Woodhouse <dwmw2@infradead.org>2006-01-18 20:43:57 -0500
committerLinus Torvalds <torvalds@g5.osdl.org>2006-01-18 22:20:29 -0500
commit150256d8aadb3a337c31efa9e175cbd25bf06b06 (patch)
tree8cd7e2a0bc6af23984682c5ea3ca687809580c5a /kernel/compat.c
parenta60fc5190a31d98508ea6a76f74217f4104e74b7 (diff)
[PATCH] Generic sys_rt_sigsuspend()
The TIF_RESTORE_SIGMASK flag allows us to have a generic implementation of sys_rt_sigsuspend() instead of duplicating it for each architecture. This provides such an implementation and makes arch/powerpc use it. It also tidies up the ppc32 sys_sigsuspend() to use TIF_RESTORE_SIGMASK. Signed-off-by: David Woodhouse <dwmw2@infradead.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'kernel/compat.c')
-rw-r--r--kernel/compat.c28
1 files changed, 28 insertions, 0 deletions
diff --git a/kernel/compat.c b/kernel/compat.c
index 256e5d9f0647..1867290c37e3 100644
--- a/kernel/compat.c
+++ b/kernel/compat.c
@@ -871,3 +871,31 @@ asmlinkage long compat_sys_stime(compat_time_t __user *tptr)
871} 871}
872 872
873#endif /* __ARCH_WANT_COMPAT_SYS_TIME */ 873#endif /* __ARCH_WANT_COMPAT_SYS_TIME */
874
875#ifdef __ARCH_WANT_COMPAT_SYS_RT_SIGSUSPEND
876asmlinkage long compat_sys_rt_sigsuspend(compat_sigset_t __user *unewset, compat_size_t sigsetsize)
877{
878 sigset_t newset;
879 compat_sigset_t newset32;
880
881 /* XXX: Don't preclude handling different sized sigset_t's. */
882 if (sigsetsize != sizeof(sigset_t))
883 return -EINVAL;
884
885 if (copy_from_user(&newset32, unewset, sizeof(compat_sigset_t)))
886 return -EFAULT;
887 sigset_from_compat(&newset, &newset32);
888 sigdelsetmask(&newset, sigmask(SIGKILL)|sigmask(SIGSTOP));
889
890 spin_lock_irq(&current->sighand->siglock);
891 current->saved_sigmask = current->blocked;
892 current->blocked = newset;
893 recalc_sigpending();
894 spin_unlock_irq(&current->sighand->siglock);
895
896 current->state = TASK_INTERRUPTIBLE;
897 schedule();
898 set_thread_flag(TIF_RESTORE_SIGMASK);
899 return -ERESTARTNOHAND;
900}
901#endif /* __ARCH_WANT_COMPAT_SYS_RT_SIGSUSPEND */