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pull clearing RESTORE_SIGMASK into block_sigmask() 

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro 2012-05-21 23:42:15 -04:00
parent 5754f412a3
commit a610d6e672
34 changed files with 130 additions and 387 deletions
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5
arch/alpha/kernel/signal.c
View File

@ -481,11 +481,6 @@ handle_signal(int sig, struct k_sigaction *ka, siginfo_t *info,
return;
}
block_sigmask(ka, sig);
/* A signal was successfully delivered, and the
saved sigmask was stored on the signal frame,
and will be restored by sigreturn. So we can
simply clear the restore sigmask flag. */
clear_thread_flag(TIF_RESTORE_SIGMASK);
}
static inline void

18
arch/arm/kernel/signal.c
View File

@ -528,7 +528,7 @@ setup_rt_frame(int usig, struct k_sigaction *ka, siginfo_t *info,
/*
* OK, we're invoking a handler
*/
static int
static void
handle_signal(unsigned long sig, struct k_sigaction *ka,
siginfo_t *info, struct pt_regs *regs)
{
@ -559,17 +559,14 @@ handle_signal(unsigned long sig, struct k_sigaction *ka,
if (ret != 0) {
force_sigsegv(sig, tsk);
return ret;
return;
}
/*
* Block the signal if we were successful.
*/
block_sigmask(ka, sig);
tracehook_signal_handler(sig, info, ka, regs, 0);
return 0;
}
/*
@ -633,16 +630,7 @@ static void do_signal(struct pt_regs *regs, int syscall)
clear_thread_flag(TIF_SYSCALL_RESTARTSYS);
}
if (handle_signal(signr, &ka, &info, regs) == 0) {
/*
* A signal was successfully delivered; the saved
* sigmask will have been stored in the signal frame,
* and will be restored by sigreturn, so we can simply
* clear the TIF_RESTORE_SIGMASK flag.
*/
if (test_thread_flag(TIF_RESTORE_SIGMASK))
clear_thread_flag(TIF_RESTORE_SIGMASK);
}
handle_signal(signr, &ka, &info, regs);
return;
}

11
arch/avr32/kernel/signal.c
View File

@ -238,16 +238,13 @@ handle_signal(unsigned long sig, struct k_sigaction *ka, siginfo_t *info,
*/
ret |= !valid_user_regs(regs);
if (ret != 0) {
force_sigsegv(sig, current);
return;
}
/*
* Block the signal if we were successful.
*/
block_sigmask(ka, sig);
clear_thread_flag(TIF_RESTORE_SIGMASK);
if (ret != 0)
force_sigsegv(sig, current);
else
block_sigmask(ka, sig);
}
/*

24
arch/blackfin/kernel/signal.c
View File

@ -247,7 +247,7 @@ handle_restart(struct pt_regs *regs, struct k_sigaction *ka, int has_handler)
/*
* OK, we're invoking a handler
*/
static int
static void
handle_signal(int sig, siginfo_t *info, struct k_sigaction *ka,
struct pt_regs *regs)
{
@ -260,11 +260,12 @@ handle_signal(int sig, siginfo_t *info, struct k_sigaction *ka,
/* set up the stack frame */
ret = setup_rt_frame(sig, ka, info, sigmask_to_save(), regs);
if (ret)
return;
if (ret == 0)
block_sigmask(ka, sig);
return ret;
block_sigmask(ka, sig);
tracehook_signal_handler(sig, info, ka, regs,
test_thread_flag(TIF_SINGLESTEP));
}
/*
@ -290,18 +291,7 @@ asmlinkage void do_signal(struct pt_regs *regs)
signr = get_signal_to_deliver(&info, &ka, regs, NULL);
if (signr > 0) {
/* Whee! Actually deliver the signal. */
if (handle_signal(signr, &info, &ka, regs) == 0) {
/* a signal was successfully delivered; the saved
* sigmask will have been stored in the signal frame,
* and will be restored by sigreturn, so we can simply
* clear the TIF_RESTORE_SIGMASK flag */
if (test_thread_flag(TIF_RESTORE_SIGMASK))
clear_thread_flag(TIF_RESTORE_SIGMASK);
tracehook_signal_handler(signr, &info, &ka, regs,
test_thread_flag(TIF_SINGLESTEP));
}
handle_signal(signr, &info, &ka, regs);
return;
}

23
arch/c6x/kernel/signal.c
View File

@ -248,7 +248,7 @@ do_restart:
/*
* handle the actual delivery of a signal to userspace
*/
static int handle_signal(int sig,
static void handle_signal(int sig,
siginfo_t *info, struct k_sigaction *ka,
struct pt_regs *regs, int syscall)
{
@ -277,11 +277,10 @@ static int handle_signal(int sig,
}
/* Set up the stack frame */
ret = setup_rt_frame(sig, ka, info, sigmask_to_save(), regs);
if (ret == 0)
block_sigmask(ka, sig);
return ret;
if (setup_rt_frame(sig, ka, info, sigmask_to_save(), regs) < 0)
return;
block_sigmask(ka, sig);
tracehook_signal_handler(sig, info, ka, regs, 0);
}
/*
@ -300,17 +299,7 @@ static void do_signal(struct pt_regs *regs, int syscall)
signr = get_signal_to_deliver(&info, &ka, regs, NULL);
if (signr > 0) {
if (handle_signal(signr, &info, &ka, regs, syscall) == 0) {
/* a signal was successfully delivered; the saved
* sigmask will have been stored in the signal frame,
* and will be restored by sigreturn, so we can simply
* clear the TIF_RESTORE_SIGMASK flag */
if (test_thread_flag(TIF_RESTORE_SIGMASK))
clear_thread_flag(TIF_RESTORE_SIGMASK);
tracehook_signal_handler(signr, &info, &ka, regs, 0);
}
handle_signal(signr, &info, &ka, regs, syscall);
return;
}

14
arch/cris/arch-v10/kernel/signal.c
View File

@ -415,7 +415,7 @@ give_sigsegv:
* OK, we're invoking a handler
*/
static inline int handle_signal(int canrestart, unsigned long sig,
static inline void handle_signal(int canrestart, unsigned long sig,
siginfo_t *info, struct k_sigaction *ka,
struct pt_regs *regs)
{
@ -458,8 +458,6 @@ static inline int handle_signal(int canrestart, unsigned long sig,
if (ret == 0)
block_sigmask(ka, sig);
return ret;
}
/*
@ -492,15 +490,7 @@ void do_signal(int canrestart, struct pt_regs *regs)
signr = get_signal_to_deliver(&info, &ka, regs, NULL);
if (signr > 0) {
/* Whee! Actually deliver the signal. */
if (handle_signal(canrestart, signr, &info, &ka,
regs)) {
/* a signal was successfully delivered; the saved
* sigmask will have been stored in the signal frame,
* and will be restored by sigreturn, so we can simply
* clear the TIF_RESTORE_SIGMASK flag */
if (test_thread_flag(TIF_RESTORE_SIGMASK))
clear_thread_flag(TIF_RESTORE_SIGMASK);
}
handle_signal(canrestart, signr, &info, &ka, regs);
return;
}

15
arch/cris/arch-v32/kernel/signal.c
View File

@ -434,7 +434,7 @@ give_sigsegv:
}
/* Invoke a signal handler to, well, handle the signal. */
static inline int
static inline void
handle_signal(int canrestart, unsigned long sig,
siginfo_t *info, struct k_sigaction *ka,
struct pt_regs * regs)
@ -491,8 +491,6 @@ handle_signal(int canrestart, unsigned long sig,
if (ret == 0)
block_sigmask(ka, sig);
return ret;
}
/*
@ -525,16 +523,7 @@ do_signal(int canrestart, struct pt_regs *regs)
if (signr > 0) {
/* Whee! Actually deliver the signal. */
if (handle_signal(canrestart, signr, &info, &ka,
regs)) {
/* a signal was successfully delivered; the saved
* sigmask will have been stored in the signal frame,
* and will be restored by sigreturn, so we can simply
* clear the TIF_RESTORE_SIGMASK flag */
if (test_thread_flag(TIF_RESTORE_SIGMASK))
clear_thread_flag(TIF_RESTORE_SIGMASK);
}
handle_signal(canrestart, signr, &info, &ka, regs);
return;
}

24
arch/frv/kernel/signal.c
View File

@ -426,7 +426,7 @@ give_sigsegv:
/*
* OK, we're invoking a handler
*/
static int handle_signal(unsigned long sig, siginfo_t *info,
static void handle_signal(unsigned long sig, siginfo_t *info,
struct k_sigaction *ka)
{
sigset_t *oldset = sigmask_to_save();
@ -461,11 +461,12 @@ static int handle_signal(unsigned long sig, siginfo_t *info,
else
ret = setup_frame(sig, ka, oldset);
if (ret == 0)
block_sigmask(ka, sig);
return ret;
if (ret)
return;
block_sigmask(ka, sig);
tracehook_signal_handler(sig, info, ka, __frame,
test_thread_flag(TIF_SINGLESTEP));
} /* end handle_signal() */
/*****************************************************************************/
@ -495,18 +496,7 @@ static void do_signal(void)
signr = get_signal_to_deliver(&info, &ka, __frame, NULL);
if (signr > 0) {
if (handle_signal(signr, &info, &ka) == 0) {
/* a signal was successfully delivered; the saved
* sigmask will have been stored in the signal frame,
* and will be restored by sigreturn, so we can simply
* clear the TIF_RESTORE_SIGMASK flag */
if (test_thread_flag(TIF_RESTORE_SIGMASK))
clear_thread_flag(TIF_RESTORE_SIGMASK);
tracehook_signal_handler(signr, &info, &ka, __frame,
test_thread_flag(TIF_SINGLESTEP));
}
handle_signal(signr, &info, &ka);
return;
}

4
arch/h8300/kernel/signal.c
View File

@ -442,10 +442,8 @@ handle_signal(unsigned long sig, siginfo_t *info, struct k_sigaction *ka,
else
ret = setup_frame(sig, ka, oldset, regs);
if (!ret) {
if (!ret)
block_sigmask(ka, sig);
clear_thread_flag(TIF_RESTORE_SIGMASK);
}
}
/*

26
arch/hexagon/kernel/signal.c
View File

@ -149,11 +149,9 @@ sigsegv:
/*
* Setup invocation of signal handler
*/
static int handle_signal(int sig, siginfo_t *info, struct k_sigaction *ka,
static void handle_signal(int sig, siginfo_t *info, struct k_sigaction *ka,
struct pt_regs *regs)
{
int rc;
/*
* If we're handling a signal that aborted a system call,
* set up the error return value before adding the signal
@ -186,15 +184,13 @@ static int handle_signal(int sig, siginfo_t *info, struct k_sigaction *ka,
* Set up the stack frame; not doing the SA_SIGINFO thing. We
* only set up the rt_frame flavor.
*/
rc = setup_rt_frame(sig, ka, info, sigmask_to_save(), regs);
/* If there was an error on setup, no signal was delivered. */
if (rc)
return rc;
if (setup_rt_frame(sig, ka, info, sigmask_to_save(), regs) < 0)
return;
block_sigmask(ka, sig);
return 0;
tracehook_signal_handler(sig, info, ka, regs,
test_thread_flag(TIF_SINGLESTEP));
}
/*
@ -215,17 +211,7 @@ static void do_signal(struct pt_regs *regs)
signo = get_signal_to_deliver(&info, &sigact, regs, NULL);
if (signo > 0) {
if (handle_signal(signo, &info, &sigact, regs) == 0) {
/*
* Successful delivery case. The saved sigmask is
* stored in the signal frame, and will be restored
* by sigreturn. We can clear the TIF flag.
*/
clear_thread_flag(TIF_RESTORE_SIGMASK);
tracehook_signal_handler(signo, &info, &sigact, regs,
test_thread_flag(TIF_SINGLESTEP));
}
handle_signal(signo, &info, &sigact, regs);
return;
}

10
arch/ia64/kernel/signal.c
View File

@ -501,16 +501,8 @@ ia64_do_signal (struct sigscratch *scr, long in_syscall)
* Whee! Actually deliver the signal. If the delivery failed, we need to
* continue to iterate in this loop so we can deliver the SIGSEGV...
*/
if (handle_signal(signr, &ka, &info, scr)) {
/*
* A signal was successfully delivered; the saved
* sigmask will have been stored in the signal frame,
* and will be restored by sigreturn, so we can simply
* clear the TS_RESTORE_SIGMASK flag.
*/
current_thread_info()->status &= ~TS_RESTORE_SIGMASK;
if (handle_signal(signr, &ka, &info, scr))
return;
}
}
/* Did we come from a system call? */

8
arch/m32r/kernel/signal.c
View File

@ -267,7 +267,7 @@ static int prev_insn(struct pt_regs *regs)
* OK, we're invoking a handler
*/
static int
static void
handle_signal(unsigned long sig, struct k_sigaction *ka, siginfo_t *info,
struct pt_regs *regs)
{
@ -295,10 +295,9 @@ handle_signal(unsigned long sig, struct k_sigaction *ka, siginfo_t *info,
/* Set up the stack frame */
if (setup_rt_frame(sig, ka, info, sigmask_to_save(), regs))
return -EFAULT;
return;
block_sigmask(ka, sig);
return 0;
}
/*
@ -333,8 +332,7 @@ static void do_signal(struct pt_regs *regs)
*/
/* Whee! Actually deliver the signal. */
if (handle_signal(signr, &ka, &info, regs) == 0)
clear_thread_flag(TIF_RESTORE_SIGMASK);
handle_signal(signr, &ka, &info, regs);
return;
}

2
arch/m68k/kernel/signal.c
View File

@ -1147,8 +1147,6 @@ handle_signal(int sig, struct k_sigaction *ka, siginfo_t *info,
regs->sr &= ~0x8000;
send_sig(SIGTRAP, current, 1);
}
clear_thread_flag(TIF_RESTORE_SIGMASK);
}
/*

17
arch/microblaze/kernel/signal.c
View File

@ -310,7 +310,7 @@ do_restart:
* OK, we're invoking a handler
*/
static int
static void
handle_signal(unsigned long sig, struct k_sigaction *ka,
siginfo_t *info, struct pt_regs *regs)
{
@ -324,11 +324,9 @@ handle_signal(unsigned long sig, struct k_sigaction *ka,
ret = setup_rt_frame(sig, ka, NULL, oldset, regs);
if (ret)
return ret;
return;
block_sigmask(ka, sig);
return 0;
}
/*
@ -356,16 +354,7 @@ static void do_signal(struct pt_regs *regs, int in_syscall)
/* Whee! Actually deliver the signal. */
if (in_syscall)
handle_restart(regs, &ka, 1);
if (!handle_signal(signr, &ka, &info, oldset, regs)) {
/*
* A signal was successfully delivered; the saved
* sigmask will have been stored in the signal frame,
* and will be restored by sigreturn, so we can simply
* clear the TS_RESTORE_SIGMASK flag.
*/
current_thread_info()->status &=
~TS_RESTORE_SIGMASK;
}
handle_signal(signr, &ka, &info, regs);
return;
}

18
arch/mips/kernel/signal.c
View File

@ -514,7 +514,7 @@ struct mips_abi mips_abi = {
.restart = __NR_restart_syscall
};
static int handle_signal(unsigned long sig, siginfo_t *info,
static void handle_signal(unsigned long sig, siginfo_t *info,
struct k_sigaction *ka, struct pt_regs *regs)
{
sigset_t *oldset = sigmask_to_save();
@ -551,11 +551,9 @@ static int handle_signal(unsigned long sig, siginfo_t *info,
ka, regs, sig, oldset);
if (ret)
return ret;
return;
block_sigmask(ka, sig);
return ret;
}
static void do_signal(struct pt_regs *regs)
@ -575,17 +573,7 @@ static void do_signal(struct pt_regs *regs)
signr = get_signal_to_deliver(&info, &ka, regs, NULL);
if (signr > 0) {
/* Whee! Actually deliver the signal. */
if (handle_signal(signr, &info, &ka, regs) == 0) {
/*
* A signal was successfully delivered; the saved
* sigmask will have been stored in the signal frame,
* and will be restored by sigreturn, so we can simply
* clear the TIF_RESTORE_SIGMASK flag.
*/
if (test_thread_flag(TIF_RESTORE_SIGMASK))
clear_thread_flag(TIF_RESTORE_SIGMASK);
}
handle_signal(signr, &info, &ka, regs);
return;
}

18
arch/mn10300/kernel/signal.c
View File

@ -462,11 +462,12 @@ static int handle_signal(int sig,
ret = setup_rt_frame(sig, ka, info, oldset, regs);
else
ret = setup_frame(sig, ka, oldset, regs);
if (ret)
return;
if (ret == 0)
block_sigmask(ka, sig);
return ret;
block_sigmask(ka, sig);
tracehook_signal_handler(sig, info, ka, regs,
test_thread_flag(TIF_SINGLESTEP));
}
/*
@ -486,15 +487,6 @@ static void do_signal(struct pt_regs *regs)
signr = get_signal_to_deliver(&info, &ka, regs, NULL);
if (signr > 0) {
if (handle_signal(signr, &info, &ka, regs) == 0) {
/* a signal was successfully delivered; the saved
* sigmask will have been stored in the signal frame,
* and will be restored by sigreturn, so we can simply
* clear the TIF_RESTORE_SIGMASK flag */
if (test_thread_flag(TIF_RESTORE_SIGMASK))
clear_thread_flag(TIF_RESTORE_SIGMASK);
tracehook_signal_handler(signr, &info, &ka, regs,
test_thread_flag(TIF_SINGLESTEP));
}
return;

2
arch/openrisc/kernel/signal.c
View File

@ -263,8 +263,6 @@ handle_signal(unsigned long sig,
return;
block_sigmask(ka, sig);
clear_thread_flag(TIF_RESTORE_SIGMASK);
tracehook_signal_handler(sig, info, ka, regs,
test_thread_flag(TIF_SINGLESTEP));
}

10
arch/parisc/kernel/signal.c
View File

@ -459,6 +459,9 @@ handle_signal(unsigned long sig, siginfo_t *info, struct k_sigaction *ka,
test_thread_flag(TIF_SINGLESTEP) ||
test_thread_flag(TIF_BLOCKSTEP));
DBG(1,KERN_DEBUG "do_signal: Exit (success), regs->gr[28] = %ld\n",
regs->gr[28]);
return 1;
}
@ -593,13 +596,8 @@ do_signal(struct pt_regs *regs, long in_syscall)
/* Whee! Actually deliver the signal. If the
delivery failed, we need to continue to iterate in
this loop so we can deliver the SIGSEGV... */
if (handle_signal(signr, &info, &ka, regs, in_syscall)) {
DBG(1,KERN_DEBUG "do_signal: Exit (success), regs->gr[28] = %ld\n",
regs->gr[28]);
if (test_thread_flag(TIF_RESTORE_SIGMASK))
clear_thread_flag(TIF_RESTORE_SIGMASK);
if (handle_signal(signr, &info, &ka, regs, in_syscall))
return;
}
}
/* end of while(1) looping forever if we can't force a signal */

7
arch/powerpc/kernel/signal.c
View File

@ -159,13 +159,6 @@ static int do_signal(struct pt_regs *regs)
regs->trap = 0;
if (ret) {
block_sigmask(&ka, signr);
/*
* A signal was successfully delivered; the saved sigmask is in
* its frame, and we can clear the TLF_RESTORE_SIGMASK flag.
*/
current_thread_info()->local_flags &= ~_TLF_RESTORE_SIGMASK;
/*
* Let tracing know that we've done the handler setup.
*/

10
arch/s390/kernel/compat_signal.c
View File

@ -572,7 +572,7 @@ give_sigsegv:
* OK, we're invoking a handler
*/
int handle_signal32(unsigned long sig, struct k_sigaction *ka,
void handle_signal32(unsigned long sig, struct k_sigaction *ka,
siginfo_t *info, sigset_t *oldset, struct pt_regs *regs)
{
int ret;
@ -583,8 +583,12 @@ int handle_signal32(unsigned long sig, struct k_sigaction *ka,
else
ret = setup_frame32(sig, ka, oldset, regs);
if (ret)
return ret;
return;
block_sigmask(ka, sig);
return 0;
/*
* Let tracing know that we've done the handler setup.
*/
tracehook_signal_handler(sig, info, ka, regs,
test_thread_flag(TIF_SINGLE_STEP));
}

2
arch/s390/kernel/entry.h
View File

@ -31,7 +31,7 @@ void do_per_trap(struct pt_regs *regs);
void syscall_trace(struct pt_regs *regs, int entryexit);
void kernel_stack_overflow(struct pt_regs * regs);
void do_signal(struct pt_regs *regs);
int handle_signal32(unsigned long sig, struct k_sigaction *ka,
void handle_signal32(unsigned long sig, struct k_sigaction *ka,
siginfo_t *info, sigset_t *oldset, struct pt_regs *regs);
void do_notify_resume(struct pt_regs *regs);

32
arch/s390/kernel/signal.c
View File

@ -367,7 +367,7 @@ give_sigsegv:
return -EFAULT;
}
static int handle_signal(unsigned long sig, struct k_sigaction *ka,
static void handle_signal(unsigned long sig, struct k_sigaction *ka,
siginfo_t *info, sigset_t *oldset,
struct pt_regs *regs)
{
@ -379,9 +379,13 @@ static int handle_signal(unsigned long sig, struct k_sigaction *ka,
else
ret = setup_frame(sig, ka, oldset, regs);
if (ret)
return ret;
return;
block_sigmask(ka, sig);
return 0;
/*
* Let tracing know that we've done the handler setup.
*/
tracehook_signal_handler(sig, info, ka, regs,
test_thread_flag(TIF_SINGLE_STEP));
}
/*
@ -436,24 +440,10 @@ void do_signal(struct pt_regs *regs)
/* No longer in a system call */
clear_thread_flag(TIF_SYSCALL);
if ((is_compat_task() ?
handle_signal32(signr, &ka, &info, oldset, regs) :
handle_signal(signr, &ka, &info, oldset, regs)) == 0) {
/*
* A signal was successfully delivered; the saved
* sigmask will have been stored in the signal frame,
* and will be restored by sigreturn, so we can simply
* clear the TIF_RESTORE_SIGMASK flag.
*/
if (test_thread_flag(TIF_RESTORE_SIGMASK))
clear_thread_flag(TIF_RESTORE_SIGMASK);
/*
* Let tracing know that we've done the handler setup.
*/
tracehook_signal_handler(signr, &info, &ka, regs,
test_thread_flag(TIF_SINGLE_STEP));
}
if (is_compat_task())
handle_signal32(signr, &ka, &info, oldset, regs);
else
handle_signal(signr, &ka, &info, oldset, regs);
return;
}

24
arch/score/kernel/signal.c
View File

@ -241,11 +241,9 @@ give_sigsegv:
return -EFAULT;
}
static int handle_signal(unsigned long sig, siginfo_t *info,
static void handle_signal(unsigned long sig, siginfo_t *info,
struct k_sigaction *ka, struct pt_regs *regs)
{
int ret;
if (regs->is_syscall) {
switch (regs->regs[4]) {
case ERESTART_RESTARTBLOCK:
@ -269,12 +267,10 @@ static int handle_signal(unsigned long sig, siginfo_t *info,
/*
* Set up the stack frame
*/
ret = setup_rt_frame(ka, regs, sig, sigmask_to_save(), info);
if (setup_rt_frame(ka, regs, sig, sigmask_to_save(), info) < 0)
return;
if (ret == 0)
block_sigmask(ka, sig);
return ret;
block_sigmask(ka, sig);
}
static void do_signal(struct pt_regs *regs)
@ -294,17 +290,7 @@ static void do_signal(struct pt_regs *regs)
signr = get_signal_to_deliver(&info, &ka, regs, NULL);
if (signr > 0) {
/* Actually deliver the signal. */
if (handle_signal(signr, &info, &ka, regs) == 0) {
/*
* A signal was successfully delivered; the saved
* sigmask will have been stored in the signal frame,
* and will be restored by sigreturn, so we can simply
* clear the TIF_RESTORE_SIGMASK flag.
*/
if (test_thread_flag(TIF_RESTORE_SIGMASK))
clear_thread_flag(TIF_RESTORE_SIGMASK);
}
handle_signal(signr, &info, &ka, regs);
return;
}

26
arch/sh/kernel/signal_32.c
View File

@ -522,7 +522,7 @@ handle_syscall_restart(unsigned long save_r0, struct pt_regs *regs,
/*
* OK, we're invoking a handler
*/
static int
static void
handle_signal(unsigned long sig, struct k_sigaction *ka, siginfo_t *info,
struct pt_regs *regs, unsigned int save_r0)
{
@ -535,10 +535,11 @@ handle_signal(unsigned long sig, struct k_sigaction *ka, siginfo_t *info,
else
ret = setup_frame(sig, ka, oldset, regs);
if (ret == 0)
block_sigmask(ka, sig);
return ret;
if (ret)
return;
block_sigmask(ka, sig);
tracehook_signal_handler(sig, info, ka, regs,
test_thread_flag(TIF_SINGLESTEP));
}
/*
@ -570,20 +571,7 @@ static void do_signal(struct pt_regs *regs, unsigned int save_r0)
handle_syscall_restart(save_r0, regs, &ka.sa);
/* Whee! Actually deliver the signal. */
if (handle_signal(signr, &ka, &info,
regs, save_r0) == 0) {
/*
* A signal was successfully delivered; the saved
* sigmask will have been stored in the signal frame,
* and will be restored by sigreturn, so we can simply
* clear the TS_RESTORE_SIGMASK flag
*/
current_thread_info()->status &= ~TS_RESTORE_SIGMASK;
tracehook_signal_handler(signr, &info, &ka, regs,
test_thread_flag(TIF_SINGLESTEP));
}
handle_signal(signr, &ka, &info, regs, save_r0);
return;
}

24
arch/sh/kernel/signal_64.c
View File

@ -43,7 +43,7 @@
#define _BLOCKABLE (~(sigmask(SIGKILL) | sigmask(SIGSTOP)))
static int
static void
handle_signal(unsigned long sig, siginfo_t *info, struct k_sigaction *ka,
struct pt_regs * regs);
@ -103,17 +103,7 @@ static void do_signal(struct pt_regs *regs)
handle_syscall_restart(regs, &ka.sa);
/* Whee! Actually deliver the signal. */
if (handle_signal(signr, &info, &ka, regs) == 0) {
/*
* If a signal was successfully delivered, the
* saved sigmask is in its frame, and we can
* clear the TS_RESTORE_SIGMASK flag.
*/
current_thread_info()->status &= ~TS_RESTORE_SIGMASK;
tracehook_signal_handler(signr, &info, &ka, regs,
test_thread_flag(TIF_SINGLESTEP));
}
handle_signal(signr, &info, &ka, regs);
return;
}
@ -648,7 +638,7 @@ give_sigsegv:
/*
* OK, we're invoking a handler
*/
static int
static void
handle_signal(unsigned long sig, siginfo_t *info, struct k_sigaction *ka,
struct pt_regs * regs)
{
@ -661,10 +651,12 @@ handle_signal(unsigned long sig, siginfo_t *info, struct k_sigaction *ka,
else
ret = setup_frame(sig, ka, oldset, regs);
if (ret == 0)
block_sigmask(ka, sig);
if (ret)
return;
return ret;
block_sigmask(ka, sig);
tracehook_signal_handler(sig, info, ka, regs,
test_thread_flag(TIF_SINGLESTEP));
}
asmlinkage void do_notify_resume(struct pt_regs *regs, unsigned long thread_info_flags)

15
arch/sparc/kernel/signal32.c
View File

@ -775,7 +775,7 @@ sigsegv:
return -EFAULT;
}
static inline int handle_signal32(unsigned long signr, struct k_sigaction *ka,
static inline void handle_signal32(unsigned long signr, struct k_sigaction *ka,
siginfo_t *info,
sigset_t *oldset, struct pt_regs *regs)
{
@ -787,12 +787,10 @@ static inline int handle_signal32(unsigned long signr, struct k_sigaction *ka,
err = setup_frame32(ka, regs, signr, oldset);
if (err)
return err;
return;
block_sigmask(ka, signr);
tracehook_signal_handler(signr, info, ka, regs, 0);
return 0;
}
static inline void syscall_restart32(unsigned long orig_i0, struct pt_regs *regs,
@ -841,14 +839,7 @@ void do_signal32(sigset_t *oldset, struct pt_regs * regs)
if (signr > 0) {
if (restart_syscall)
syscall_restart32(orig_i0, regs, &ka.sa);
if (handle_signal32(signr, &ka, &info, oldset, regs) == 0) {
/* A signal was successfully delivered; the saved
* sigmask will have been stored in the signal frame,
* and will be restored by sigreturn, so we can simply
* clear the TS_RESTORE_SIGMASK flag.
*/
current_thread_info()->status &= ~TS_RESTORE_SIGMASK;
}
handle_signal32(signr, &ka, &info, oldset, regs);
return;
}
if (restart_syscall &&

16
arch/sparc/kernel/signal_32.c
View File

@ -449,7 +449,7 @@ sigsegv:
return -EFAULT;
}
static inline int
static inline void
handle_signal(unsigned long signr, struct k_sigaction *ka,
siginfo_t *info, struct pt_regs *regs)
{
@ -462,12 +462,10 @@ handle_signal(unsigned long signr, struct k_sigaction *ka,
err = setup_frame(ka, regs, signr, oldset);
if (err)
return err;
return;
block_sigmask(ka, signr);
tracehook_signal_handler(signr, info, ka, regs, 0);
return 0;
}
static inline void syscall_restart(unsigned long orig_i0, struct pt_regs *regs,
@ -539,15 +537,7 @@ static void do_signal(struct pt_regs *regs, unsigned long orig_i0)
if (signr > 0) {
if (restart_syscall)
syscall_restart(orig_i0, regs, &ka.sa);
if (handle_signal(signr, &ka, &info, regs) == 0) {
/* a signal was successfully delivered; the saved
* sigmask will have been stored in the signal frame,
* and will be restored by sigreturn, so we can simply
* clear the TIF_RESTORE_SIGMASK flag.
*/
if (test_thread_flag(TIF_RESTORE_SIGMASK))
clear_thread_flag(TIF_RESTORE_SIGMASK);
}
handle_signal(signr, &ka, &info, regs);
return;
}
if (restart_syscall &&

15
arch/sparc/kernel/signal_64.c
View File

@ -466,7 +466,7 @@ sigsegv:
return -EFAULT;
}
static inline int handle_signal(unsigned long signr, struct k_sigaction *ka,
static inline void handle_signal(unsigned long signr, struct k_sigaction *ka,
siginfo_t *info,
sigset_t *oldset, struct pt_regs *regs)
{
@ -475,12 +475,10 @@ static inline int handle_signal(unsigned long signr, struct k_sigaction *ka,
err = setup_rt_frame(ka, regs, signr, oldset,
(ka->sa.sa_flags & SA_SIGINFO) ? info : NULL);
if (err)
return err;
return;
block_sigmask(ka, signr);
tracehook_signal_handler(signr, info, ka, regs, 0);
return 0;
}
static inline void syscall_restart(unsigned long orig_i0, struct pt_regs *regs,
@ -558,14 +556,7 @@ static void do_signal(struct pt_regs *regs, unsigned long orig_i0)
if (signr > 0) {
if (restart_syscall)
syscall_restart(orig_i0, regs, &ka.sa);
if (handle_signal(signr, &ka, &info, oldset, regs) == 0) {
/* A signal was successfully delivered; the saved
* sigmask will have been stored in the signal frame,
* and will be restored by sigreturn, so we can simply
* clear the TS_RESTORE_SIGMASK flag.
*/
current_thread_info()->status &= ~TS_RESTORE_SIGMASK;
}
handle_signal(signr, &ka, &info, oldset, regs);
return;
}
if (restart_syscall &&

25
arch/tile/kernel/signal.c
View File

@ -242,7 +242,7 @@ give_sigsegv:
* OK, we're invoking a handler
*/
static int handle_signal(unsigned long sig, siginfo_t *info,
static void handle_signal(unsigned long sig, siginfo_t *info,
struct k_sigaction *ka,
struct pt_regs *regs)
{
@ -279,15 +279,9 @@ static int handle_signal(unsigned long sig, siginfo_t *info,
else
#endif
ret = setup_rt_frame(sig, ka, info, oldset, regs);
if (ret == 0) {
/* This code is only called from system calls or from
* the work_pending path in the return-to-user code, and
* either way we can re-enable interrupts unconditionally.
*/
block_sigmask(ka, sig);
}
return ret;
if (ret)
return;
block_sigmask(ka, sig);
}
/*
@ -311,16 +305,7 @@ void do_signal(struct pt_regs *regs)
signr = get_signal_to_deliver(&info, &ka, regs, NULL);
if (signr > 0) {
/* Whee! Actually deliver the signal. */
if (handle_signal(signr, &info, &ka, regs) == 0) {
/*
* A signal was successfully delivered; the saved
* sigmask will have been stored in the signal frame,
* and will be restored by sigreturn, so we can simply
* clear the TS_RESTORE_SIGMASK flag.
*/
current_thread_info()->status &= ~TS_RESTORE_SIGMASK;
}
handle_signal(signr, &info, &ka, regs);
goto done;
}

16
arch/um/kernel/signal.c
View File

@ -22,7 +22,7 @@ EXPORT_SYMBOL(unblock_signals);
/*
* OK, we're invoking a handler
*/
static int handle_signal(struct pt_regs *regs, unsigned long signr,
static void handle_signal(struct pt_regs *regs, unsigned long signr,
struct k_sigaction *ka, siginfo_t *info)
{
sigset_t *oldset = sigmask_to_save();
@ -66,8 +66,6 @@ static int handle_signal(struct pt_regs *regs, unsigned long signr,
force_sigsegv(signr, current);
else
block_sigmask(ka, signr);
return err;
}
static int kern_do_signal(struct pt_regs *regs)
@ -79,17 +77,7 @@ static int kern_do_signal(struct pt_regs *regs)
while ((sig = get_signal_to_deliver(&info, &ka_copy, regs, NULL)) > 0) {
handled_sig = 1;
/* Whee! Actually deliver the signal. */
if (!handle_signal(regs, sig, &ka_copy, &info)) {
/*
* a signal was successfully delivered; the saved
* sigmask will have been stored in the signal frame,
* and will be restored by sigreturn, so we can simply
* clear the TIF_RESTORE_SIGMASK flag
*/
if (test_thread_flag(TIF_RESTORE_SIGMASK))
clear_thread_flag(TIF_RESTORE_SIGMASK);
break;
}
handle_signal(regs, sig, &ka_copy, &info);
}
/* Did we come from a system call? */

18
arch/unicore32/kernel/signal.c
View File

@ -312,7 +312,7 @@ static inline void setup_syscall_restart(struct pt_regs *regs)
/*
* OK, we're invoking a handler
*/
static int handle_signal(unsigned long sig, struct k_sigaction *ka,
static void handle_signal(unsigned long sig, struct k_sigaction *ka,
siginfo_t *info, struct pt_regs *regs, int syscall)
{
struct thread_info *thread = current_thread_info();
@ -363,15 +363,13 @@ static int handle_signal(unsigned long sig, struct k_sigaction *ka,
if (ret != 0) {
force_sigsegv(sig, tsk);
return ret;
return;
}
/*
* Block the signal if we were successful.
*/
block_sigmask(ka, sig);
return 0;
}
/*
@ -403,17 +401,7 @@ static void do_signal(struct pt_regs *regs, int syscall)
signr = get_signal_to_deliver(&info, &ka, regs, NULL);
if (signr > 0) {
if (handle_signal(signr, &ka, &info, regs, syscall)
== 0) {
/*
* A signal was successfully delivered; the saved
* sigmask will have been stored in the signal frame,
* and will be restored by sigreturn, so we can simply
* clear the TIF_RESTORE_SIGMASK flag.
*/
if (test_thread_flag(TIF_RESTORE_SIGMASK))
clear_thread_flag(TIF_RESTORE_SIGMASK);
}
handle_signal(signr, &ka, &info, regs, syscall);
return;
}

31
arch/x86/kernel/signal.c
View File

@ -648,38 +648,27 @@ setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
{
int usig = signr_convert(sig);
sigset_t *set = sigmask_to_save();
int ret;
/* Set up the stack frame */
if (is_ia32) {
if (ka->sa.sa_flags & SA_SIGINFO)
ret = ia32_setup_rt_frame(usig, ka, info, set, regs);
return ia32_setup_rt_frame(usig, ka, info, set, regs);
else
ret = ia32_setup_frame(usig, ka, set, regs);
return ia32_setup_frame(usig, ka, set, regs);
#ifdef CONFIG_X86_X32_ABI
} else if (is_x32) {
ret = x32_setup_rt_frame(usig, ka, info,
return x32_setup_rt_frame(usig, ka, info,
(compat_sigset_t *)set, regs);
#endif
} else {
ret = __setup_rt_frame(sig, ka, info, set, regs);
return __setup_rt_frame(sig, ka, info, set, regs);
}
if (ret) {
force_sigsegv(sig, current);
return -EFAULT;
}
current_thread_info()->status &= ~TS_RESTORE_SIGMASK;
return ret;
}
static int
static void
handle_signal(unsigned long sig, siginfo_t *info, struct k_sigaction *ka,
struct pt_regs *regs)
{
int ret;
/* Are we from a system call? */
if (syscall_get_nr(current, regs) >= 0) {
/* If so, check system call restarting.. */
@ -710,10 +699,10 @@ handle_signal(unsigned long sig, siginfo_t *info, struct k_sigaction *ka,
likely(test_and_clear_thread_flag(TIF_FORCED_TF)))
regs->flags &= ~X86_EFLAGS_TF;
ret = setup_rt_frame(sig, ka, info, regs);
if (ret)
return ret;
if (setup_rt_frame(sig, ka, info, regs) < 0) {
force_sigsegv(sig, current);
return;
}
/*
* Clear the direction flag as per the ABI for function entry.
@ -732,8 +721,6 @@ handle_signal(unsigned long sig, siginfo_t *info, struct k_sigaction *ka,
tracehook_signal_handler(sig, info, ka, regs,
test_thread_flag(TIF_SINGLESTEP));
return 0;
}
#ifdef CONFIG_X86_32

1
arch/xtensa/kernel/signal.c
View File

@ -499,7 +499,6 @@ static void do_signal(struct pt_regs *regs)
if (ret)
return;
clear_thread_flag(TIF_RESTORE_SIGMASK);
block_sigmask(&ka, signr);
if (current->ptrace & PT_SINGLESTEP)
task_pt_regs(current)->icountlevel = 1;

6
kernel/signal.c
View File

@ -2382,6 +2382,12 @@ void block_sigmask(struct k_sigaction *ka, int signr)
{
sigset_t blocked;
/* A signal was successfully delivered, and the
saved sigmask was stored on the signal frame,
and will be restored by sigreturn. So we can
simply clear the restore sigmask flag. */
clear_restore_sigmask();
sigorsets(&blocked, &current->blocked, &ka->sa.sa_mask);
if (!(ka->sa.sa_flags & SA_NODEFER))
sigaddset(&blocked, signr);