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authorKyle McMartin <kyle@parisc-linux.org>2007-01-08 16:28:06 -0500
committerKyle McMartin <kyle@athena.road.mcmartin.ca>2007-02-17 01:06:04 -0500
commit4650f0a5832033c78690811aa9b171764c11fc0f (patch)
tree8f201cd0f556780b5300d0f0e93e30eb31839190 /arch/parisc/kernel/signal.c
parent0bbdac0897a48f415eb788bf3263c92bd5e97ffb (diff)
downloadlinux-4650f0a5832033c78690811aa9b171764c11fc0f.tar.bz2
[PARISC] Add TIF_RESTORE_SIGMASK support
And unmask the pselect6/ppoll system calls. Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
Diffstat (limited to 'arch/parisc/kernel/signal.c')
-rw-r--r--arch/parisc/kernel/signal.c72
1 files changed, 22 insertions, 50 deletions
diff --git a/arch/parisc/kernel/signal.c b/arch/parisc/kernel/signal.c
index ee6653edeb7a..8d781b0e668b 100644
--- a/arch/parisc/kernel/signal.c
+++ b/arch/parisc/kernel/signal.c
@@ -59,8 +59,6 @@
* this. */
#define A(__x) ((unsigned long)(__x))
-int do_signal(sigset_t *oldset, struct pt_regs *regs, int in_syscall);
-
/*
* Atomically swap in the new signal mask, and wait for a signal.
*/
@@ -68,49 +66,6 @@ int do_signal(sigset_t *oldset, struct pt_regs *regs, int in_syscall);
#include "sys32.h"
#endif
-asmlinkage int
-sys_rt_sigsuspend(sigset_t __user *unewset, size_t sigsetsize, struct pt_regs *regs)
-{
- sigset_t saveset, newset;
-#ifdef __LP64__
- compat_sigset_t newset32;
-
- if (is_compat_task()) {
- /* XXX: Don't preclude handling different sized sigset_t's. */
- if (sigsetsize != sizeof(compat_sigset_t))
- return -EINVAL;
- if (copy_from_user(&newset32, (compat_sigset_t __user *)unewset, sizeof(newset32)))
- return -EFAULT;
- sigset_32to64(&newset,&newset32);
-
- } else
-#endif
- {
- /* XXX: Don't preclude handling different sized sigset_t's. */
- if (sigsetsize != sizeof(sigset_t))
- return -EINVAL;
-
- if (copy_from_user(&newset, unewset, sizeof(newset)))
- return -EFAULT;
- }
-
- sigdelsetmask(&newset, ~_BLOCKABLE);
-
- spin_lock_irq(&current->sighand->siglock);
- saveset = current->blocked;
- current->blocked = newset;
- recalc_sigpending();
- spin_unlock_irq(&current->sighand->siglock);
-
- regs->gr[28] = -EINTR;
- while (1) {
- current->state = TASK_INTERRUPTIBLE;
- schedule();
- if (do_signal(&saveset, regs, 1))
- return -EINTR;
- }
-}
-
/*
* Do a signal return - restore sigcontext.
*/
@@ -528,12 +483,13 @@ handle_signal(unsigned long sig, siginfo_t *info, struct k_sigaction *ka,
* us due to the magic of delayed branching.
*/
-asmlinkage int
-do_signal(sigset_t *oldset, struct pt_regs *regs, int in_syscall)
+asmlinkage void
+do_signal(struct pt_regs *regs, long in_syscall)
{
siginfo_t info;
struct k_sigaction ka;
int signr;
+ sigset_t *oldset;
DBG(1,"\ndo_signal: oldset=0x%p, regs=0x%p, sr7 %#lx, in_syscall=%d\n",
oldset, regs, regs->sr[7], in_syscall);
@@ -543,7 +499,9 @@ do_signal(sigset_t *oldset, struct pt_regs *regs, int in_syscall)
we would be called in that case, but for some reason we
are. */
- if (!oldset)
+ if (test_thread_flag(TIF_RESTORE_SIGMASK))
+ oldset = &current->saved_sigmask;
+ else
oldset = &current->blocked;
DBG(1,"do_signal: oldset %08lx / %08lx\n",
@@ -592,7 +550,9 @@ do_signal(sigset_t *oldset, struct pt_regs *regs, int in_syscall)
if (handle_signal(signr, &info, &ka, oldset, regs, in_syscall)) {
DBG(1,KERN_DEBUG "do_signal: Exit (success), regs->gr[28] = %ld\n",
regs->gr[28]);
- return 1;
+ if (test_thread_flag(TIF_RESTORE_SIGMASK))
+ clear_thread_flag(TIF_RESTORE_SIGMASK);
+ return;
}
}
/* end of while(1) looping forever if we can't force a signal */
@@ -653,5 +613,17 @@ do_signal(sigset_t *oldset, struct pt_regs *regs, int in_syscall)
DBG(1,"do_signal: Exit (not delivered), regs->gr[28] = %ld\n",
regs->gr[28]);
- return 0;
+ if (test_thread_flag(TIF_RESTORE_SIGMASK)) {
+ clear_thread_flag(TIF_RESTORE_SIGMASK);
+ sigprocmask(SIG_SETMASK, &current->saved_sigmask, NULL);
+ }
+
+ return;
+}
+
+void do_notify_resume(struct pt_regs *regs, long in_syscall)
+{
+ if (test_thread_flag(TIF_SIGPENDING) ||
+ test_thread_flag(TIF_RESTORE_SIGMASK))
+ do_signal(regs, in_syscall);
}