mips: Use get_signal() signal_setup_done()

Use the more generic functions get_signal() signal_setup_done()
for signal delivery.
Signed-off-by: NRichard Weinberger <richard@nod.at>

arch/mips/include/asm/abi.h

@@ -13,13 +13,11 @@
 #include <asm/siginfo.h>
 
 struct mips_abi {
-	int (* const setup_frame)(void *sig_return, struct k_sigaction *ka,
-				  struct pt_regs *regs, int signr,
-				  sigset_t *set);
+	int (* const setup_frame)(void *sig_return, struct ksignal *ksig,
+				  struct pt_regs *regs, sigset_t *set);
 	const unsigned long	signal_return_offset;
-	int (* const setup_rt_frame)(void *sig_return, struct k_sigaction *ka,
-			       struct pt_regs *regs, int signr,
-			       sigset_t *set, siginfo_t *info);
+	int (* const setup_rt_frame)(void *sig_return, struct ksignal *ksig,
+				     struct pt_regs *regs, sigset_t *set);
 	const unsigned long	rt_signal_return_offset;
 	const unsigned long	restart;
 };

arch/mips/kernel/signal-common.h

@@ -22,7 +22,7 @@
 /*
  * Determine which stack to use..
  */
-extern void __user *get_sigframe(struct k_sigaction *ka, struct pt_regs *regs,
+extern void __user *get_sigframe(struct ksignal *ksig, struct pt_regs *regs,
 				 size_t frame_size);
 /* Check and clear pending FPU exceptions in saved CSR */
 extern int fpcsr_pending(unsigned int __user *fpcsr);

arch/mips/kernel/signal.c

@@ -428,20 +428,20 @@ asmlinkage void sys_rt_sigreturn(nabi_no_regargs struct pt_regs regs)
 }
 
 #ifdef CONFIG_TRAD_SIGNALS
-static int setup_frame(void *sig_return, struct k_sigaction *ka,
-		       struct pt_regs *regs, int signr, sigset_t *set)
+static int setup_frame(void *sig_return, struct ksignal *ksig,
+		       struct pt_regs *regs, sigset_t *set)
 {
 	struct sigframe __user *frame;
 	int err = 0;
 
-	frame = get_sigframe(ka, regs, sizeof(*frame));
+	frame = get_sigframe(&ksig->ka, regs, sizeof(*frame));
 	if (!access_ok(VERIFY_WRITE, frame, sizeof (*frame)))
-		goto give_sigsegv;
+		return -EFAULT;
 
 	err |= setup_sigcontext(regs, &frame->sf_sc);
 	err |= __copy_to_user(&frame->sf_mask, set, sizeof(*set));
 	if (err)
-		goto give_sigsegv;
+		return -EFAULT;
 
 	/*
 	 * Arguments to signal handler:
@@ -453,37 +453,32 @@ static int setup_frame(void *sig_return, struct k_sigaction *ka,
 	 * $25 and c0_epc point to the signal handler, $29 points to the
 	 * struct sigframe.
 	 */
-	regs->regs[ 4] = signr;
+	regs->regs[ 4] = ksig->sig;
 	regs->regs[ 5] = 0;
 	regs->regs[ 6] = (unsigned long) &frame->sf_sc;
 	regs->regs[29] = (unsigned long) frame;
 	regs->regs[31] = (unsigned long) sig_return;
-	regs->cp0_epc = regs->regs[25] = (unsigned long) ka->sa.sa_handler;
+	regs->cp0_epc = regs->regs[25] = (unsigned long) ksig->ka.sa.sa_handler;
 
 	DEBUGP("SIG deliver (%s:%d): sp=0x%p pc=0x%lx ra=0x%lx\n",
 	       current->comm, current->pid,
 	       frame, regs->cp0_epc, regs->regs[31]);
 	return 0;
-
-give_sigsegv:
-	force_sigsegv(signr, current);
-	return -EFAULT;
 }
 #endif
 
-static int setup_rt_frame(void *sig_return, struct k_sigaction *ka,
-			  struct pt_regs *regs, int signr, sigset_t *set,
-			  siginfo_t *info)
+static int setup_rt_frame(void *sig_return, struct ksignal *ksig,
+			  struct pt_regs *regs, sigset_t *set)
 {
 	struct rt_sigframe __user *frame;
 	int err = 0;
 
-	frame = get_sigframe(ka, regs, sizeof(*frame));
+	frame = get_sigframe(&ksig->ka, regs, sizeof(*frame));
 	if (!access_ok(VERIFY_WRITE, frame, sizeof (*frame)))
-		goto give_sigsegv;
+		return -EFAULT;
 
 	/* Create siginfo.  */
-	err |= copy_siginfo_to_user(&frame->rs_info, info);
+	err |= copy_siginfo_to_user(&frame->rs_info, &ksig->info);
 
 	/* Create the ucontext.	 */
 	err |= __put_user(0, &frame->rs_uc.uc_flags);
@@ -493,7 +488,7 @@ static int setup_rt_frame(void *sig_return, struct k_sigaction *ka,
 	err |= __copy_to_user(&frame->rs_uc.uc_sigmask, set, sizeof(*set));
 
 	if (err)
-		goto give_sigsegv;
+		return -EFAULT;
 
 	/*
 	 * Arguments to signal handler:
@@ -505,22 +500,18 @@ static int setup_rt_frame(void *sig_return, struct k_sigaction *ka,
 	 * $25 and c0_epc point to the signal handler, $29 points to
 	 * the struct rt_sigframe.
 	 */
-	regs->regs[ 4] = signr;
+	regs->regs[ 4] = ksig->sig;
 	regs->regs[ 5] = (unsigned long) &frame->rs_info;
 	regs->regs[ 6] = (unsigned long) &frame->rs_uc;
 	regs->regs[29] = (unsigned long) frame;
 	regs->regs[31] = (unsigned long) sig_return;
-	regs->cp0_epc = regs->regs[25] = (unsigned long) ka->sa.sa_handler;
+	regs->cp0_epc = regs->regs[25] = (unsigned long) ksig->ka.sa.sa_handler;
 
 	DEBUGP("SIG deliver (%s:%d): sp=0x%p pc=0x%lx ra=0x%lx\n",
 	       current->comm, current->pid,
 	       frame, regs->cp0_epc, regs->regs[31]);
 
 	return 0;
-
-give_sigsegv:
-	force_sigsegv(signr, current);
-	return -EFAULT;
 }
 
 struct mips_abi mips_abi = {
@@ -534,8 +525,7 @@ struct mips_abi mips_abi = {
 	.restart	= __NR_restart_syscall
 };
 
-static void handle_signal(unsigned long sig, siginfo_t *info,
-	struct k_sigaction *ka, struct pt_regs *regs)
+static void handle_signal(struct ksignal *ksig, struct pt_regs *regs)
 {
 	sigset_t *oldset = sigmask_to_save();
 	int ret;
@@ -557,7 +547,7 @@ static void handle_signal(unsigned long sig, siginfo_t *info,
 			regs->regs[2] = EINTR;
 			break;
 		case ERESTARTSYS:
-			if (!(ka->sa.sa_flags & SA_RESTART)) {
+			if (!(ksig->ka.sa.sa_flags & SA_RESTART)) {
 				regs->regs[2] = EINTR;
 				break;
 			}
@@ -571,29 +561,23 @@ static void handle_signal(unsigned long sig, siginfo_t *info,
 		regs->regs[0] = 0;		/* Don't deal with this again.	*/
 	}
 
-	if (sig_uses_siginfo(ka))
+	if (sig_uses_siginfo(&ksig->ka))
 		ret = abi->setup_rt_frame(vdso + abi->rt_signal_return_offset,
-					  ka, regs, sig, oldset, info);
+					  ksig, regs, oldset);
 	else
-		ret = abi->setup_frame(vdso + abi->signal_return_offset,
-				       ka, regs, sig, oldset);
-
-	if (ret)
-		return;
+		ret = abi->setup_frame(vdso + abi->signal_return_offset, ksig,
+				       regs, oldset);
 
-	signal_delivered(sig, info, ka, regs, 0);
+	signal_setup_done(ret, ksig, 0);
 }
 
 static void do_signal(struct pt_regs *regs)
 {
-	struct k_sigaction ka;
-	siginfo_t info;
-	int signr;
+	struct ksignal ksig;
 
-	signr = get_signal_to_deliver(&info, &ka, regs, NULL);
-	if (signr > 0) {
+	if (get_signal(&ksig)) {
 		/* Whee!  Actually deliver the signal.	*/
-		handle_signal(signr, &info, &ka, regs);
+		handle_signal(&ksig, regs);
 		return;
 	}
 

arch/mips/kernel/signal32.c

@@ -490,21 +490,21 @@ asmlinkage void sys32_rt_sigreturn(nabi_no_regargs struct pt_regs regs)
 	force_sig(SIGSEGV, current);
 }
 
-static int setup_frame_32(void *sig_return, struct k_sigaction *ka,
-			  struct pt_regs *regs, int signr, sigset_t *set)
+static int setup_frame_32(void *sig_return, struct ksignal *ksig,
+			  struct pt_regs *regs, sigset_t *set)
 {
 	struct sigframe32 __user *frame;
 	int err = 0;
 
-	frame = get_sigframe(ka, regs, sizeof(*frame));
+	frame = get_sigframe(&ksig->ka, regs, sizeof(*frame));
 	if (!access_ok(VERIFY_WRITE, frame, sizeof (*frame)))
-		goto give_sigsegv;
+		return -EFAULT;
 
 	err |= setup_sigcontext32(regs, &frame->sf_sc);
 	err |= __copy_conv_sigset_to_user(&frame->sf_mask, set);
 
 	if (err)
-		goto give_sigsegv;
+		return -EFAULT;
 
 	/*
 	 * Arguments to signal handler:
@@ -516,37 +516,32 @@ static int setup_frame_32(void *sig_return, struct k_sigaction *ka,
 	 * $25 and c0_epc point to the signal handler, $29 points to the
 	 * struct sigframe.
 	 */
-	regs->regs[ 4] = signr;
+	regs->regs[ 4] = ksig->sig;
 	regs->regs[ 5] = 0;
 	regs->regs[ 6] = (unsigned long) &frame->sf_sc;
 	regs->regs[29] = (unsigned long) frame;
 	regs->regs[31] = (unsigned long) sig_return;
-	regs->cp0_epc = regs->regs[25] = (unsigned long) ka->sa.sa_handler;
+	regs->cp0_epc = regs->regs[25] = (unsigned long) ksig->ka.sa.sa_handler;
 
 	DEBUGP("SIG deliver (%s:%d): sp=0x%p pc=0x%lx ra=0x%lx\n",
 	       current->comm, current->pid,
 	       frame, regs->cp0_epc, regs->regs[31]);
 
 	return 0;
-
-give_sigsegv:
-	force_sigsegv(signr, current);
-	return -EFAULT;
 }
 
-static int setup_rt_frame_32(void *sig_return, struct k_sigaction *ka,
-			     struct pt_regs *regs, int signr, sigset_t *set,
-			     siginfo_t *info)
+static int setup_rt_frame_32(void *sig_return, struct ksignal *ksig,
+			     struct pt_regs *regs, sigset_t *set)
 {
 	struct rt_sigframe32 __user *frame;
 	int err = 0;
 
-	frame = get_sigframe(ka, regs, sizeof(*frame));
+	frame = get_sigframe(&ksig->ka, regs, sizeof(*frame));
 	if (!access_ok(VERIFY_WRITE, frame, sizeof (*frame)))
-		goto give_sigsegv;
+		return -EFAULT;
 
 	/* Convert (siginfo_t -> compat_siginfo_t) and copy to user. */
-	err |= copy_siginfo_to_user32(&frame->rs_info, info);
+	err |= copy_siginfo_to_user32(&frame->rs_info, &ksig->info);
 
 	/* Create the ucontext.	 */
 	err |= __put_user(0, &frame->rs_uc.uc_flags);
@@ -556,7 +551,7 @@ static int setup_rt_frame_32(void *sig_return, struct k_sigaction *ka,
 	err |= __copy_conv_sigset_to_user(&frame->rs_uc.uc_sigmask, set);
 
 	if (err)
-		goto give_sigsegv;
+		return -EFAULT;
 
 	/*
 	 * Arguments to signal handler:
@@ -568,22 +563,18 @@ static int setup_rt_frame_32(void *sig_return, struct k_sigaction *ka,
 	 * $25 and c0_epc point to the signal handler, $29 points to
 	 * the struct rt_sigframe32.
 	 */
-	regs->regs[ 4] = signr;
+	regs->regs[ 4] = ksig->sig;
 	regs->regs[ 5] = (unsigned long) &frame->rs_info;
 	regs->regs[ 6] = (unsigned long) &frame->rs_uc;
 	regs->regs[29] = (unsigned long) frame;
 	regs->regs[31] = (unsigned long) sig_return;
-	regs->cp0_epc = regs->regs[25] = (unsigned long) ka->sa.sa_handler;
+	regs->cp0_epc = regs->regs[25] = (unsigned long) ksig->ka.sa.sa_handler;
 
 	DEBUGP("SIG deliver (%s:%d): sp=0x%p pc=0x%lx ra=0x%lx\n",
 	       current->comm, current->pid,
 	       frame, regs->cp0_epc, regs->regs[31]);
 
 	return 0;
-
-give_sigsegv:
-	force_sigsegv(signr, current);
-	return -EFAULT;
 }
 
 /*

arch/mips/kernel/signal_n32.c

@@ -102,18 +102,18 @@ asmlinkage void sysn32_rt_sigreturn(nabi_no_regargs struct pt_regs regs)
 	force_sig(SIGSEGV, current);
 }
 
-static int setup_rt_frame_n32(void *sig_return, struct k_sigaction *ka,
-	struct pt_regs *regs, int signr, sigset_t *set, siginfo_t *info)
+static int setup_rt_frame_n32(void *sig_return, struct ksignal *ksig,
+			      struct pt_regs *regs, sigset_t *set)
 {
 	struct rt_sigframe_n32 __user *frame;
 	int err = 0;
 
-	frame = get_sigframe(ka, regs, sizeof(*frame));
+	frame = get_sigframe(&ksig->ka, regs, sizeof(*frame));
 	if (!access_ok(VERIFY_WRITE, frame, sizeof (*frame)))
-		goto give_sigsegv;
+		return -EFAULT;
 
 	/* Create siginfo.  */
-	err |= copy_siginfo_to_user32(&frame->rs_info, info);
+	err |= copy_siginfo_to_user32(&frame->rs_info, &ksig->info);
 
 	/* Create the ucontext.	 */
 	err |= __put_user(0, &frame->rs_uc.uc_flags);
@@ -123,7 +123,7 @@ static int setup_rt_frame_n32(void *sig_return, struct k_sigaction *ka,
 	err |= __copy_conv_sigset_to_user(&frame->rs_uc.uc_sigmask, set);
 
 	if (err)
-		goto give_sigsegv;
+		return -EFAULT;
 
 	/*
 	 * Arguments to signal handler:
@@ -135,22 +135,18 @@ static int setup_rt_frame_n32(void *sig_return, struct k_sigaction *ka,
 	 * $25 and c0_epc point to the signal handler, $29 points to
 	 * the struct rt_sigframe.
 	 */
-	regs->regs[ 4] = signr;
+	regs->regs[ 4] = ksig->sig;
 	regs->regs[ 5] = (unsigned long) &frame->rs_info;
 	regs->regs[ 6] = (unsigned long) &frame->rs_uc;
 	regs->regs[29] = (unsigned long) frame;
 	regs->regs[31] = (unsigned long) sig_return;
-	regs->cp0_epc = regs->regs[25] = (unsigned long) ka->sa.sa_handler;
+	regs->cp0_epc = regs->regs[25] = (unsigned long) ksig->ka.sa.sa_handler;
 
 	DEBUGP("SIG deliver (%s:%d): sp=0x%p pc=0x%lx ra=0x%lx\n",
 	       current->comm, current->pid,
 	       frame, regs->cp0_epc, regs->regs[31]);
 
 	return 0;
-
-give_sigsegv:
-	force_sigsegv(signr, current);
-	return -EFAULT;
 }
 
 struct mips_abi mips_abi_n32 = {