---

yaml
---
r: 356692
b: refs/heads/master
c: 4a9d32d
h: refs/heads/master
v: v3

[refs]

@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 8be433ab55d5058327e82f124f1eb0b37e4540b1
+refs/heads/master: 4a9d32d377e1facca204cc1c6856406be8b53fa3

trunk/arch/m68k/Kconfig

@@ -18,9 +18,6 @@ config M68K
 	select HAVE_MOD_ARCH_SPECIFIC
 	select MODULES_USE_ELF_REL
 	select MODULES_USE_ELF_RELA
-	select GENERIC_SIGALTSTACK
-	select OLD_SIGSUSPEND3
-	select OLD_SIGACTION
 
 config RWSEM_GENERIC_SPINLOCK
 	bool

trunk/arch/m68k/include/asm/signal.h

@@ -16,6 +16,13 @@ typedef struct {
 	unsigned long sig[_NSIG_WORDS];
 } sigset_t;
 
+struct old_sigaction {
+	__sighandler_t sa_handler;
+	old_sigset_t sa_mask;
+	unsigned long sa_flags;
+	__sigrestore_t sa_restorer;
+};
+
 #define __ARCH_HAS_SA_RESTORER
 
 #include <asm/sigcontext.h>

trunk/arch/m68k/kernel/signal.c

@@ -224,6 +224,56 @@ static inline void push_cache(unsigned long vaddr)
 
 #endif /* CONFIG_MMU */
 
+/*
+ * Atomically swap in the new signal mask, and wait for a signal.
+ */
+asmlinkage int
+sys_sigsuspend(int unused0, int unused1, old_sigset_t mask)
+{
+	sigset_t blocked;
+	siginitset(&blocked, mask);
+	return sigsuspend(&blocked);
+}
+
+asmlinkage int
+sys_sigaction(int sig, const struct old_sigaction __user *act,
+	      struct old_sigaction __user *oact)
+{
+	struct k_sigaction new_ka, old_ka;
+	int ret;
+
+	if (act) {
+		old_sigset_t mask;
+		if (!access_ok(VERIFY_READ, act, sizeof(*act)) ||
+		    __get_user(new_ka.sa.sa_handler, &act->sa_handler) ||
+		    __get_user(new_ka.sa.sa_restorer, &act->sa_restorer) ||
+		    __get_user(new_ka.sa.sa_flags, &act->sa_flags) ||
+		    __get_user(mask, &act->sa_mask))
+			return -EFAULT;
+		siginitset(&new_ka.sa.sa_mask, mask);
+	}
+
+	ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL);
+
+	if (!ret && oact) {
+		if (!access_ok(VERIFY_WRITE, oact, sizeof(*oact)) ||
+		    __put_user(old_ka.sa.sa_handler, &oact->sa_handler) ||
+		    __put_user(old_ka.sa.sa_restorer, &oact->sa_restorer) ||
+		    __put_user(old_ka.sa.sa_flags, &oact->sa_flags) ||
+		    __put_user(old_ka.sa.sa_mask.sig[0], &oact->sa_mask))
+			return -EFAULT;
+	}
+
+	return ret;
+}
+
+asmlinkage int
+sys_sigaltstack(const stack_t __user *uss, stack_t __user *uoss)
+{
+	return do_sigaltstack(uss, uoss, rdusp());
+}
+
+
 /*
  * Do a signal return; undo the signal stack.
  *
@@ -715,9 +765,8 @@ rt_restore_ucontext(struct pt_regs *regs, struct switch_stack *sw,
 	err |= __get_user(temp, &uc->uc_formatvec);
 
 	err |= rt_restore_fpu_state(uc);
-	err |= restore_altstack(&uc->uc_stack);
 
-	if (err)
+	if (err || do_sigaltstack(&uc->uc_stack, NULL, usp) == -EFAULT)
 		goto badframe;
 
 	if (mangle_kernel_stack(regs, temp, &uc->uc_extra))
@@ -965,7 +1014,11 @@ static int setup_rt_frame (int sig, struct k_sigaction *ka, siginfo_t *info,
 	/* Create the ucontext.  */
 	err |= __put_user(0, &frame->uc.uc_flags);
 	err |= __put_user(NULL, &frame->uc.uc_link);
-	err |= __save_altstack(&frame->uc.uc_stack, rdusp());
+	err |= __put_user((void __user *)current->sas_ss_sp,
+			  &frame->uc.uc_stack.ss_sp);
+	err |= __put_user(sas_ss_flags(rdusp()),
+			  &frame->uc.uc_stack.ss_flags);
+	err |= __put_user(current->sas_ss_size, &frame->uc.uc_stack.ss_size);
 	err |= rt_setup_ucontext(&frame->uc, regs);
 	err |= copy_to_user (&frame->uc.uc_sigmask, set, sizeof(*set));
 

trunk/arch/microblaze/Kconfig

@@ -27,6 +27,7 @@ config MICROBLAZE
 	select GENERIC_CLOCKEVENTS
 	select MODULES_USE_ELF_RELA
 	select CLONE_BACKWARDS
+	select GENERIC_SIGALTSTACK
 
 config SWAP
 	def_bool n

trunk/arch/microblaze/kernel/signal.c

@@ -41,13 +41,6 @@
 #include <asm/cacheflush.h>
 #include <asm/syscalls.h>
 
-asmlinkage long
-sys_sigaltstack(const stack_t __user *uss, stack_t __user *uoss,
-		struct pt_regs *regs)
-{
-	return do_sigaltstack(uss, uoss, regs->r1);
-}
-
 /*
  * Do a signal return; undo the signal stack.
  */
@@ -109,9 +102,7 @@ asmlinkage long sys_rt_sigreturn(struct pt_regs *regs)
 	if (restore_sigcontext(regs, &frame->uc.uc_mcontext, &rval))
 		goto badframe;
 
-	/* It is more difficult to avoid calling this function than to
-	 call it and ignore errors. */
-	if (do_sigaltstack(&frame->uc.uc_stack, NULL, regs->r1) == -EFAULT)
+	if (restore_altstack(&frame->uc.uc_stack))
 		goto badframe;
 
 	return rval;
@@ -194,11 +185,7 @@ static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
 	/* Create the ucontext. */
 	err |= __put_user(0, &frame->uc.uc_flags);
 	err |= __put_user(NULL, &frame->uc.uc_link);
-	err |= __put_user((void __user *)current->sas_ss_sp,
-			&frame->uc.uc_stack.ss_sp);
-	err |= __put_user(sas_ss_flags(regs->r1),
-			&frame->uc.uc_stack.ss_flags);
-	err |= __put_user(current->sas_ss_size, &frame->uc.uc_stack.ss_size);
+	err |= __save_altstack(&frame->uc.uc_stack, regs->r1);
 	err |= setup_sigcontext(&frame->uc.uc_mcontext,
 			regs, set->sig[0]);
 	err |= __copy_to_user(&frame->uc.uc_sigmask, set, sizeof(*set));