m32r: fix rt_sigsuspend()

do_signal() should know about saved_mask for it to work...

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/arch/m32r/include/asm/signal.h b/arch/m32r/include/asm/signal.h
index 9c1acb2b1a928984c8f62ce4a5cd91a25329dc21..b2eeb0de1c8d337a6d7ab5abef363b4797ab7e9a 100644 (file)
--- a/arch/m32r/include/asm/signal.h
+++ b/arch/m32r/include/asm/signal.h
@@ -157,7 +157,6 @@ typedef struct sigaltstack {
 #undef __HAVE_ARCH_SIG_BITOPS
 
 struct pt_regs;
-extern int do_signal(struct pt_regs *regs, sigset_t *oldset);
 
 #define ptrace_signal_deliver(regs, cookie)    do { } while (0)
 

diff --git a/arch/m32r/include/asm/unistd.h b/arch/m32r/include/asm/unistd.h
index 76125777483ccda07d9d31d55c2f8f3b3201ea05..c70545689da83ef2ffaef987b2c3374fadca04fc 100644 (file)
--- a/arch/m32r/include/asm/unistd.h
+++ b/arch/m32r/include/asm/unistd.h
@@ -351,6 +351,7 @@
 #define __ARCH_WANT_SYS_OLD_GETRLIMIT /*will be unused*/
 #define __ARCH_WANT_SYS_OLDUMOUNT
 #define __ARCH_WANT_SYS_RT_SIGACTION
+#define __ARCH_WANT_SYS_RT_SIGSUSPEND
 
 #define __IGNORE_lchown
 #define __IGNORE_setuid

diff --git a/arch/m32r/kernel/entry.S b/arch/m32r/kernel/entry.S
index 403869833b98fe6c95fd360d80cd762f3a5008e2..90149daa560fb848e0f58e935b543f7d76c7b4f9 100644 (file)
--- a/arch/m32r/kernel/entry.S
+++ b/arch/m32r/kernel/entry.S
@@ -235,8 +235,7 @@ work_resched:
 work_notifysig:                                ; deal with pending signals and
                                        ; notify-resume requests
        mv      r0, sp                  ; arg1 : struct pt_regs *regs
-       ldi     r1, #0                  ; arg2 : sigset_t *oldset
-       mv      r2, r9                  ; arg3 : __u32 thread_info_flags
+       ldi     r1, r9                  ; arg2 : __u32 thread_info_flags
        bl      do_notify_resume
        bra     restore_all
 

diff --git a/arch/m32r/kernel/signal.c b/arch/m32r/kernel/signal.c
index 144b0f124fc72f08b20f93336f96da81327fe61c..acd69f7f3357ecf46ce7aa36df03665b6b50b754 100644 (file)
--- a/arch/m32r/kernel/signal.c
+++ b/arch/m32r/kernel/signal.c
@@ -28,37 +28,6 @@
 
 #define DEBUG_SIG 0
 
-#define _BLOCKABLE (~(sigmask(SIGKILL) | sigmask(SIGSTOP)))
-
-int do_signal(struct pt_regs *, sigset_t *);
-
-asmlinkage int
-sys_rt_sigsuspend(sigset_t __user *unewset, size_t sigsetsize,
-                 unsigned long r2, unsigned long r3, unsigned long r4,
-                 unsigned long r5, unsigned long r6, struct pt_regs *regs)
-{
-       sigset_t newset;
-
-       /* 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, sigmask(SIGKILL)|sigmask(SIGSTOP));
-
-       spin_lock_irq(&current->sighand->siglock);
-       current->saved_sigmask = current->blocked;
-       current->blocked = newset;
-       recalc_sigpending();
-       spin_unlock_irq(&current->sighand->siglock);
-
-       current->state = TASK_INTERRUPTIBLE;
-       schedule();
-       set_thread_flag(TIF_RESTORE_SIGMASK);
-       return -ERESTARTNOHAND;
-}
-
 asmlinkage int
 sys_sigaltstack(const stack_t __user *uss, stack_t __user *uoss,
                unsigned long r2, unsigned long r3, unsigned long r4,
@@ -332,12 +301,13 @@ handle_signal(unsigned long sig, struct k_sigaction *ka, siginfo_t *info,
  * want to handle. Thus you cannot kill init even with a SIGKILL even by
  * mistake.
  */
-int do_signal(struct pt_regs *regs, sigset_t *oldset)
+static int do_signal(struct pt_regs *regs)
 {
        siginfo_t info;
        int signr;
        struct k_sigaction ka;
        unsigned short inst;
+       sigset_t *oldset;
 
        /*
         * We want the common case to go fast, which
@@ -351,7 +321,9 @@ int do_signal(struct pt_regs *regs, sigset_t *oldset)
        if (try_to_freeze()) 
                goto no_signal;
 
-       if (!oldset)
+       if (test_thread_flag(TIF_RESTORE_SIGMASK))
+               oldset = &current->saved_sigmask;
+       else
                oldset = &current->blocked;
 
        signr = get_signal_to_deliver(&info, &ka, regs, NULL);
@@ -364,6 +336,7 @@ int do_signal(struct pt_regs *regs, sigset_t *oldset)
 
                /* Whee!  Actually deliver the signal.  */
                handle_signal(signr, &ka, &info, oldset, regs);
+               clear_thread_flag(TIF_RESTORE_SIGMASK);
                return 1;
        }
 
@@ -391,6 +364,10 @@ int do_signal(struct pt_regs *regs, sigset_t *oldset)
                                regs->bpc -= 4;
                }
        }
+       if (test_thread_flag(TIF_RESTORE_SIGMASK)) {
+               clear_thread_flag(TIF_RESTORE_SIGMASK);
+               sigprocmask(SIG_SETMASK, &current->saved_sigmask, NULL);
+       }
        return 0;
 }
 
@@ -398,8 +375,7 @@ int do_signal(struct pt_regs *regs, sigset_t *oldset)
  * notification of userspace execution resumption
  * - triggered by current->work.notify_resume
  */
-void do_notify_resume(struct pt_regs *regs, sigset_t *oldset,
-                     __u32 thread_info_flags)
+void do_notify_resume(struct pt_regs *regs, __u32 thread_info_flags)
 {
        /* Pending single-step? */
        if (thread_info_flags & _TIF_SINGLESTEP)
@@ -407,7 +383,7 @@ void do_notify_resume(struct pt_regs *regs, sigset_t *oldset,
 
        /* deal with pending signal delivery */
        if (thread_info_flags & _TIF_SIGPENDING)
-               do_signal(regs,oldset);
+               do_signal(regs);
 
        if (thread_info_flags & _TIF_NOTIFY_RESUME) {
                clear_thread_flag(TIF_NOTIFY_RESUME);