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new helper: sigmask_to_save()

Browse Source 
replace boilerplate "should we use ->saved_sigmask or ->blocked?"
with calls of obvious inlined helper...

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro 2012-05-02 09:59:21 -04:00
parent 51a7b448d4
commit b7f9a11a6c
31 changed files with 92 additions and 250 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
arch/alpha/kernel/signal.c
View File

@ -468,12 +468,9 @@ static inline void
handle_signal(int sig, struct k_sigaction *ka, siginfo_t *info,
struct pt_regs * regs, struct switch_stack *sw)
{
sigset_t *oldset = &current->blocked;
sigset_t *oldset = sigmask_to_save();
int ret;
if (test_thread_flag(TIF_RESTORE_SIGMASK))
oldset = &current->saved_sigmask;
if (ka->sa.sa_flags & SA_SIGINFO)
ret = setup_rt_frame(sig, ka, info, oldset, regs, sw);
else

12
arch/arm/kernel/signal.c
View File

@ -530,11 +530,11 @@ setup_rt_frame(int usig, struct k_sigaction *ka, siginfo_t *info,
*/
static int
handle_signal(unsigned long sig, struct k_sigaction *ka,
siginfo_t *info, sigset_t *oldset,
struct pt_regs * regs)
siginfo_t *info, struct pt_regs *regs)
{
struct thread_info *thread = current_thread_info();
struct task_struct *tsk = current;
sigset_t *oldset = sigmask_to_save();
int usig = sig;
int ret;
@ -617,8 +617,6 @@ static void do_signal(struct pt_regs *regs, int syscall)
*/
signr = get_signal_to_deliver(&info, &ka, regs, NULL);
if (signr > 0) {
sigset_t *oldset;
/*
* Depending on the signal settings we may need to revert the
* decision to restart the system call. But skip this if a
@ -635,11 +633,7 @@ static void do_signal(struct pt_regs *regs, int syscall)
clear_thread_flag(TIF_SYSCALL_RESTARTSYS);
}
if (test_thread_flag(TIF_RESTORE_SIGMASK))
oldset = &current->saved_sigmask;
else
oldset = &current->blocked;
if (handle_signal(signr, &ka, &info, oldset, regs) == 0) {
if (handle_signal(signr, &ka, &info, regs) == 0) {
/*
* A signal was successfully delivered; the saved
* sigmask will have been stored in the signal frame,

20
arch/avr32/kernel/signal.c
View File

@ -224,14 +224,14 @@ static inline void setup_syscall_restart(struct pt_regs *regs)
static inline void
handle_signal(unsigned long sig, struct k_sigaction *ka, siginfo_t *info,
sigset_t *oldset, struct pt_regs *regs, int syscall)
struct pt_regs *regs, int syscall)
{
int ret;
/*
* Set up the stack frame
*/
ret = setup_rt_frame(sig, ka, info, oldset, regs);
ret = setup_rt_frame(sig, ka, info, sigmask_to_save(), regs);
/*
* Check that the resulting registers are sane
@ -255,7 +255,7 @@ handle_signal(unsigned long sig, struct k_sigaction *ka, siginfo_t *info,
* doesn't 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, int syscall)
static void do_signal(struct pt_regs *regs, int syscall)
{
siginfo_t info;
int signr;
@ -267,12 +267,7 @@ int do_signal(struct pt_regs *regs, sigset_t *oldset, int syscall)
* without doing anything if so.
*/
if (!user_mode(regs))
return 0;
if (test_thread_flag(TIF_RESTORE_SIGMASK))
oldset = &current->saved_sigmask;
else if (!oldset)
oldset = &current->blocked;
return;
signr = get_signal_to_deliver(&info, &ka, regs, NULL);
if (syscall) {
@ -298,11 +293,10 @@ int do_signal(struct pt_regs *regs, sigset_t *oldset, int syscall)
if (signr == 0) {
/* No signal to deliver -- put the saved sigmask back */
restore_saved_sigmask();
return 0;
return;
}
handle_signal(signr, &ka, &info, oldset, regs, syscall);
return 1;
handle_signal(signr, &ka, &info, regs, syscall);
}
asmlinkage void do_notify_resume(struct pt_regs *regs, struct thread_info *ti)
@ -313,7 +307,7 @@ asmlinkage void do_notify_resume(struct pt_regs *regs, struct thread_info *ti)
syscall = 1;
if (ti->flags & (_TIF_SIGPENDING | _TIF_RESTORE_SIGMASK))
do_signal(regs, &current->blocked, syscall);
do_signal(regs, syscall);
if (ti->flags & _TIF_NOTIFY_RESUME) {
clear_thread_flag(TIF_NOTIFY_RESUME);

12
arch/blackfin/kernel/signal.c
View File

@ -249,7 +249,7 @@ handle_restart(struct pt_regs *regs, struct k_sigaction *ka, int has_handler)
*/
static int
handle_signal(int sig, siginfo_t *info, struct k_sigaction *ka,
sigset_t *oldset, struct pt_regs *regs)
struct pt_regs *regs)
{
int ret;
@ -259,7 +259,7 @@ handle_signal(int sig, siginfo_t *info, struct k_sigaction *ka,
handle_restart(regs, ka, 1);
/* set up the stack frame */
ret = setup_rt_frame(sig, ka, info, oldset, regs);
ret = setup_rt_frame(sig, ka, info, sigmask_to_save(), regs);
if (ret == 0)
block_sigmask(ka, sig);
@ -281,22 +281,16 @@ asmlinkage void do_signal(struct pt_regs *regs)
siginfo_t info;
int signr;
struct k_sigaction ka;
sigset_t *oldset;
current->thread.esp0 = (unsigned long)regs;
if (try_to_freeze())
goto no_signal;
if (test_thread_flag(TIF_RESTORE_SIGMASK))
oldset = &current->saved_sigmask;
else
oldset = &current->blocked;
signr = get_signal_to_deliver(&info, &ka, regs, NULL);
if (signr > 0) {
/* Whee! Actually deliver the signal. */
if (handle_signal(signr, &info, &ka, oldset, regs) == 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

14
arch/c6x/kernel/signal.c
View File

@ -250,8 +250,7 @@ handle_restart(struct pt_regs *regs, struct k_sigaction *ka, int has_handler)
*/
static int handle_signal(int sig,
siginfo_t *info, struct k_sigaction *ka,
sigset_t *oldset, struct pt_regs *regs,
int syscall)
struct pt_regs *regs, int syscall)
{
int ret;
@ -278,7 +277,7 @@ static int handle_signal(int sig,
}
/* Set up the stack frame */
ret = setup_rt_frame(sig, ka, info, oldset, regs);
ret = setup_rt_frame(sig, ka, info, sigmask_to_save(), regs);
if (ret == 0)
block_sigmask(ka, sig);
@ -292,7 +291,6 @@ static void do_signal(struct pt_regs *regs, int syscall)
{
struct k_sigaction ka;
siginfo_t info;
sigset_t *oldset;
int signr;
/* we want the common case to go fast, which is why we may in certain
@ -300,15 +298,9 @@ static void do_signal(struct pt_regs *regs, int syscall)
if (!user_mode(regs))
return;
if (test_thread_flag(TIF_RESTORE_SIGMASK))
oldset = &current->saved_sigmask;
else
oldset = &current->blocked;
signr = get_signal_to_deliver(&info, &ka, regs, NULL);
if (signr > 0) {
if (handle_signal(signr, &info, &ka, oldset,
regs, syscall) == 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

11
arch/cris/arch-v10/kernel/signal.c
View File

@ -417,8 +417,9 @@ static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
static inline int handle_signal(int canrestart, unsigned long sig,
siginfo_t *info, struct k_sigaction *ka,
sigset_t *oldset, struct pt_regs *regs)
struct pt_regs *regs)
{
sigset_t *oldset = sigmask_to_save();
int ret;
/* Are we from a system call? */
@ -478,7 +479,6 @@ void do_signal(int canrestart, struct pt_regs *regs)
siginfo_t info;
int signr;
struct k_sigaction ka;
sigset_t *oldset;
/*
* We want the common case to go fast, which
@ -489,16 +489,11 @@ void do_signal(int canrestart, struct pt_regs *regs)
if (!user_mode(regs))
return;
if (test_thread_flag(TIF_RESTORE_SIGMASK))
oldset = &current->saved_sigmask;
else
oldset = &current->blocked;
signr = get_signal_to_deliver(&info, &ka, regs, NULL);
if (signr > 0) {
/* Whee! Actually deliver the signal. */
if (handle_signal(canrestart, signr, &info, &ka,
oldset, regs)) {
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

11
arch/cris/arch-v32/kernel/signal.c
View File

@ -437,8 +437,9 @@ setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
static inline int
handle_signal(int canrestart, unsigned long sig,
siginfo_t *info, struct k_sigaction *ka,
sigset_t *oldset, struct pt_regs * regs)
struct pt_regs * regs)
{
sigset_t *oldset = sigmask_to_save();
int ret;
/* Check if this got called from a system call. */
@ -511,7 +512,6 @@ do_signal(int canrestart, struct pt_regs *regs)
int signr;
siginfo_t info;
struct k_sigaction ka;
sigset_t *oldset;
/*
* The common case should go fast, which is why this point is
@ -521,17 +521,12 @@ do_signal(int canrestart, struct pt_regs *regs)
if (!user_mode(regs))
return;
if (test_thread_flag(TIF_RESTORE_SIGMASK))
oldset = &current->saved_sigmask;
else
oldset = &current->blocked;
signr = get_signal_to_deliver(&info, &ka, regs, NULL);
if (signr > 0) {
/* Whee! Actually deliver the signal. */
if (handle_signal(canrestart, signr, &info, &ka,
oldset, regs)) {
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

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

@ -427,8 +427,9 @@ static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
* OK, we're invoking a handler
*/
static int handle_signal(unsigned long sig, siginfo_t *info,
struct k_sigaction *ka, sigset_t *oldset)
struct k_sigaction *ka)
{
sigset_t *oldset = sigmask_to_save();
int ret;
/* Are we from a system call? */
@ -492,14 +493,9 @@ static void do_signal(void)
if (try_to_freeze())
goto no_signal;
if (test_thread_flag(TIF_RESTORE_SIGMASK))
oldset = &current->saved_sigmask;
else
oldset = &current->blocked;
signr = get_signal_to_deliver(&info, &ka, __frame, NULL);
if (signr > 0) {
if (handle_signal(signr, &info, &ka, oldset) == 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

11
arch/h8300/kernel/signal.c
View File

@ -412,8 +412,9 @@ static int setup_rt_frame (int sig, struct k_sigaction *ka, siginfo_t *info,
*/
static void
handle_signal(unsigned long sig, siginfo_t *info, struct k_sigaction *ka,
sigset_t *oldset, struct pt_regs * regs)
struct pt_regs * regs)
{
sigset_t *oldset = sigmask_to_save();
int ret;
/* are we from a system call? */
if (regs->orig_er0 >= 0) {
@ -457,7 +458,6 @@ statis void do_signal(struct pt_regs *regs)
siginfo_t info;
int signr;
struct k_sigaction ka;
sigset_t *oldset;
/*
* We want the common case to go fast, which
@ -473,15 +473,10 @@ statis void do_signal(struct pt_regs *regs)
current->thread.esp0 = (unsigned long) regs;
if (test_thread_flag(TIF_RESTORE_SIGMASK))
oldset = &current->saved_sigmask;
else
oldset = &current->blocked;
signr = get_signal_to_deliver(&info, &ka, regs, NULL);
if (signr > 0) {
/* Whee! Actually deliver the signal. */
handle_signal(signr, &info, &ka, oldset, regs);
handle_signal(signr, &info, &ka, regs);
return;
}
no_signal:

13
arch/hexagon/kernel/signal.c
View File

@ -150,7 +150,7 @@ static int setup_rt_frame(int signr, struct k_sigaction *ka, siginfo_t *info,
* Setup invocation of signal handler
*/
static int handle_signal(int sig, siginfo_t *info, struct k_sigaction *ka,
sigset_t *oldset, struct pt_regs *regs)
struct pt_regs *regs)
{
int rc;
@ -186,7 +186,7 @@ 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, oldset, regs);
rc = setup_rt_frame(sig, ka, info, sigmask_to_save(), regs);
/* If there was an error on setup, no signal was delivered. */
if (rc)
@ -215,14 +215,7 @@ static void do_signal(struct pt_regs *regs)
signo = get_signal_to_deliver(&info, &sigact, regs, NULL);
if (signo > 0) {
sigset_t *oldset;
if (test_thread_flag(TIF_RESTORE_SIGMASK))
oldset = &current->saved_sigmask;
else
oldset = &current->blocked;
if (handle_signal(signo, &info, &sigact, oldset, regs) == 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

12
arch/ia64/kernel/signal.c
View File

@ -415,10 +415,10 @@ setup_frame (int sig, struct k_sigaction *ka, siginfo_t *info, sigset_t *set,
}
static long
handle_signal (unsigned long sig, struct k_sigaction *ka, siginfo_t *info, sigset_t *oldset,
handle_signal (unsigned long sig, struct k_sigaction *ka, siginfo_t *info,
struct sigscratch *scr)
{
if (!setup_frame(sig, ka, info, oldset, scr))
if (!setup_frame(sig, ka, info, sigmask_to_save(), scr))
return 0;
block_sigmask(ka, sig);
@ -440,7 +440,6 @@ void
ia64_do_signal (struct sigscratch *scr, long in_syscall)
{
struct k_sigaction ka;
sigset_t *oldset;
siginfo_t info;
long restart = in_syscall;
long errno = scr->pt.r8;
@ -453,11 +452,6 @@ ia64_do_signal (struct sigscratch *scr, long in_syscall)
if (!user_mode(&scr->pt))
return;
if (current_thread_info()->status & TS_RESTORE_SIGMASK)
oldset = &current->saved_sigmask;
else
oldset = &current->blocked;
/*
* This only loops in the rare cases of handle_signal() failing, in which case we
* need to push through a forced SIGSEGV.
@ -507,7 +501,7 @@ 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, oldset, scr)) {
if (handle_signal(signr, &ka, &info, scr)) {
/*
* A signal was successfully delivered; the saved
* sigmask will have been stored in the signal frame,

12
arch/m32r/kernel/signal.c
View File

@ -269,7 +269,7 @@ static int prev_insn(struct pt_regs *regs)
static int
handle_signal(unsigned long sig, struct k_sigaction *ka, siginfo_t *info,
sigset_t *oldset, struct pt_regs *regs)
struct pt_regs *regs)
{
/* Are we from a system call? */
if (regs->syscall_nr >= 0) {
@ -294,7 +294,7 @@ handle_signal(unsigned long sig, struct k_sigaction *ka, siginfo_t *info,
}
/* Set up the stack frame */
if (setup_rt_frame(sig, ka, info, oldset, regs))
if (setup_rt_frame(sig, ka, info, sigmask_to_save(), regs))
return -EFAULT;
block_sigmask(ka, sig);
@ -311,7 +311,6 @@ static void do_signal(struct pt_regs *regs)
siginfo_t info;
int signr;
struct k_sigaction ka;
sigset_t *oldset;
/*
* We want the common case to go fast, which
@ -325,11 +324,6 @@ static void do_signal(struct pt_regs *regs)
if (try_to_freeze())
goto no_signal;
if (test_thread_flag(TIF_RESTORE_SIGMASK))
oldset = &current->saved_sigmask;
else
oldset = &current->blocked;
signr = get_signal_to_deliver(&info, &ka, regs, NULL);
if (signr > 0) {
/* Re-enable any watchpoints before delivering the
@ -339,7 +333,7 @@ static void do_signal(struct pt_regs *regs)
*/
/* Whee! Actually deliver the signal. */
if (handle_signal(signr, &ka, &info, oldset, regs) == 0)
if (handle_signal(signr, &ka, &info, regs) == 0)
clear_thread_flag(TIF_RESTORE_SIGMASK);
return;

11
arch/m68k/kernel/signal.c
View File

@ -1123,8 +1123,9 @@ handle_restart(struct pt_regs *regs, struct k_sigaction *ka, int has_handler)
*/
static void
handle_signal(int sig, struct k_sigaction *ka, siginfo_t *info,
sigset_t *oldset, struct pt_regs *regs)
struct pt_regs *regs)
{
sigset_t *oldset = sigmask_to_save();
int err;
/* are we from a system call? */
if (regs->orig_d0 >= 0)
@ -1160,19 +1161,13 @@ static void do_signal(struct pt_regs *regs)
siginfo_t info;
struct k_sigaction ka;
int signr;
sigset_t *oldset;
current->thread.esp0 = (unsigned long) regs;
if (test_thread_flag(TIF_RESTORE_SIGMASK))
oldset = &current->saved_sigmask;
else
oldset = &current->blocked;
signr = get_signal_to_deliver(&info, &ka, regs, NULL);
if (signr > 0) {
/* Whee! Actually deliver the signal. */
handle_signal(signr, &ka, &info, oldset, regs);
handle_signal(signr, &ka, &info, regs);
return;
}

9
arch/microblaze/kernel/signal.c
View File

@ -312,8 +312,9 @@ handle_restart(struct pt_regs *regs, struct k_sigaction *ka, int has_handler)
static int
handle_signal(unsigned long sig, struct k_sigaction *ka,
siginfo_t *info, sigset_t *oldset, struct pt_regs *regs)
siginfo_t *info, struct pt_regs *regs)
{
sigset_t *oldset = sigmask_to_save();
int ret;
/* Set up the stack frame */
@ -344,18 +345,12 @@ static void do_signal(struct pt_regs *regs, int in_syscall)
siginfo_t info;
int signr;
struct k_sigaction ka;
sigset_t *oldset;
#ifdef DEBUG_SIG
printk(KERN_INFO "do signal: %p %d\n", regs, in_syscall);
printk(KERN_INFO "do signal2: %lx %lx %ld [%lx]\n", regs->pc, regs->r1,
regs->r12, current_thread_info()->flags);
#endif
if (current_thread_info()->status & TS_RESTORE_SIGMASK)
oldset = &current->saved_sigmask;
else
oldset = &current->blocked;
signr = get_signal_to_deliver(&info, &ka, regs, NULL);
if (signr > 0) {
/* Whee! Actually deliver the signal. */

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

@ -515,8 +515,9 @@ struct mips_abi mips_abi = {
};
static int handle_signal(unsigned long sig, siginfo_t *info,
struct k_sigaction *ka, sigset_t *oldset, struct pt_regs *regs)
struct k_sigaction *ka, struct pt_regs *regs)
{
sigset_t *oldset = sigmask_to_save();
int ret;
struct mips_abi *abi = current->thread.abi;
void *vdso = current->mm->context.vdso;
@ -560,7 +561,6 @@ static int handle_signal(unsigned long sig, siginfo_t *info,
static void do_signal(struct pt_regs *regs)
{
struct k_sigaction ka;
sigset_t *oldset;
siginfo_t info;
int signr;
@ -572,15 +572,10 @@ static void do_signal(struct pt_regs *regs)
if (!user_mode(regs))
return;
if (test_thread_flag(TIF_RESTORE_SIGMASK))
oldset = &current->saved_sigmask;
else
oldset = &current->blocked;
signr = get_signal_to_deliver(&info, &ka, regs, NULL);
if (signr > 0) {
/* Whee! Actually deliver the signal. */
if (handle_signal(signr, &info, &ka, oldset, regs) == 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,

11
arch/mn10300/kernel/signal.c
View File

@ -430,8 +430,9 @@ static inline void stepback(struct pt_regs *regs)
*/
static int handle_signal(int sig,
siginfo_t *info, struct k_sigaction *ka,
sigset_t *oldset, struct pt_regs *regs)
struct pt_regs *regs)
{
sigset_t *oldset = sigmask_to_save();
int ret;
/* Are we from a system call? */
@ -475,7 +476,6 @@ static void do_signal(struct pt_regs *regs)
{
struct k_sigaction ka;
siginfo_t info;
sigset_t *oldset;
int signr;
/* we want the common case to go fast, which is why we may in certain
@ -483,14 +483,9 @@ static void do_signal(struct pt_regs *regs)
if (!user_mode(regs))
return;
if (test_thread_flag(TIF_RESTORE_SIGMASK))
oldset = &current->saved_sigmask;
else
oldset = &current->blocked;
signr = get_signal_to_deliver(&info, &ka, regs, NULL);
if (signr > 0) {
if (handle_signal(signr, &info, &ka, oldset, regs) == 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

12
arch/openrisc/kernel/signal.c
View File

@ -254,11 +254,11 @@ static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
static inline int
handle_signal(unsigned long sig,
siginfo_t *info, struct k_sigaction *ka,
sigset_t *oldset, struct pt_regs *regs)
struct pt_regs *regs)
{
int ret;
ret = setup_rt_frame(sig, ka, info, oldset, regs);
ret = setup_rt_frame(sig, ka, info, sigmask_to_save(), regs);
if (ret)
return ret;
@ -341,15 +341,9 @@ void do_signal(struct pt_regs *regs)
* back */
restore_saved_sigmask();
} else { /* signr > 0 */
sigset_t *oldset;
if (current_thread_info()->flags & _TIF_RESTORE_SIGMASK)
oldset = &current->saved_sigmask;
else
oldset = &current->blocked;
/* Whee! Actually deliver the signal. */
if (!handle_signal(signr, &info, &ka, oldset, regs)) {
if (!handle_signal(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

21
arch/parisc/kernel/signal.c
View File

@ -443,8 +443,9 @@ setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
static long
handle_signal(unsigned long sig, siginfo_t *info, struct k_sigaction *ka,
sigset_t *oldset, struct pt_regs *regs, int in_syscall)
struct pt_regs *regs, int in_syscall)
{
sigset_t *oldset = sigmask_to_save();
DBG(1,"handle_signal: sig=%ld, ka=%p, info=%p, oldset=%p, regs=%p\n",
sig, ka, info, oldset, regs);
@ -568,28 +569,17 @@ 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);
DBG(1,"\ndo_signal: regs=0x%p, sr7 %#lx, in_syscall=%d\n",
regs, regs->sr[7], in_syscall);
/* Everyone else checks to see if they are in kernel mode at
this point and exits if that's the case. I'm not sure why
we would be called in that case, but for some reason we
are. */
if (test_thread_flag(TIF_RESTORE_SIGMASK))
oldset = &current->saved_sigmask;
else
oldset = &current->blocked;
DBG(1,"do_signal: oldset %08lx / %08lx\n",
oldset->sig[0], oldset->sig[1]);
/* May need to force signal if handle_signal failed to deliver */
while (1) {
signr = get_signal_to_deliver(&info, &ka, regs, NULL);
DBG(3,"do_signal: signr = %d, regs->gr[28] = %ld\n", signr, regs->gr[28]);
@ -603,8 +593,7 @@ 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, oldset,
regs, in_syscall)) {
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))

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

@ -114,18 +114,13 @@ static void check_syscall_restart(struct pt_regs *regs, struct k_sigaction *ka,
static int do_signal(struct pt_regs *regs)
{
sigset_t *oldset;
sigset_t *oldset = sigmask_to_save();
siginfo_t info;
int signr;
struct k_sigaction ka;
int ret;
int is32 = is_32bit_task();
if (current_thread_info()->local_flags & _TLF_RESTORE_SIGMASK)
oldset = &current->saved_sigmask;
else
oldset = &current->blocked;
signr = get_signal_to_deliver(&info, &ka, regs, NULL);
/* Is there any syscall restart business here ? */

7
arch/s390/kernel/signal.c
View File

@ -398,12 +398,7 @@ void do_signal(struct pt_regs *regs)
siginfo_t info;
int signr;
struct k_sigaction ka;
sigset_t *oldset;
if (test_thread_flag(TIF_RESTORE_SIGMASK))
oldset = &current->saved_sigmask;
else
oldset = &current->blocked;
sigset_t *oldset = sigmask_to_save();
/*
* Get signal to deliver. When running under ptrace, at this point

12
arch/score/kernel/signal.c
View File

@ -242,7 +242,7 @@ static int setup_rt_frame(struct k_sigaction *ka, struct pt_regs *regs,
}
static int handle_signal(unsigned long sig, siginfo_t *info,
struct k_sigaction *ka, sigset_t *oldset, struct pt_regs *regs)
struct k_sigaction *ka, struct pt_regs *regs)
{
int ret;
@ -269,7 +269,7 @@ static int handle_signal(unsigned long sig, siginfo_t *info,
/*
* Set up the stack frame
*/
ret = setup_rt_frame(ka, regs, sig, oldset, info);
ret = setup_rt_frame(ka, regs, sig, sigmask_to_save(), info);
if (ret == 0)
block_sigmask(ka, sig);
@ -280,7 +280,6 @@ static int handle_signal(unsigned long sig, siginfo_t *info,
static void do_signal(struct pt_regs *regs)
{
struct k_sigaction ka;
sigset_t *oldset;
siginfo_t info;
int signr;
@ -292,15 +291,10 @@ static void do_signal(struct pt_regs *regs)
if (!user_mode(regs))
return;
if (test_thread_flag(TIF_RESTORE_SIGMASK))
oldset = &current->saved_sigmask;
else
oldset = &current->blocked;
signr = get_signal_to_deliver(&info, &ka, regs, NULL);
if (signr > 0) {
/* Actually deliver the signal. */
if (handle_signal(signr, &info, &ka, oldset, regs) == 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,

11
arch/sh/kernel/signal_32.c
View File

@ -524,8 +524,9 @@ handle_syscall_restart(unsigned long save_r0, struct pt_regs *regs,
*/
static int
handle_signal(unsigned long sig, struct k_sigaction *ka, siginfo_t *info,
sigset_t *oldset, struct pt_regs *regs, unsigned int save_r0)
struct pt_regs *regs, unsigned int save_r0)
{
sigset_t *oldset = sigmask_to_save();
int ret;
/* Set up the stack frame */
@ -554,7 +555,6 @@ static void do_signal(struct pt_regs *regs, unsigned int save_r0)
siginfo_t info;
int signr;
struct k_sigaction ka;
sigset_t *oldset;
/*
* We want the common case to go fast, which
@ -565,17 +565,12 @@ static void do_signal(struct pt_regs *regs, unsigned int save_r0)
if (!user_mode(regs))
return;
if (current_thread_info()->status & TS_RESTORE_SIGMASK)
oldset = &current->saved_sigmask;
else
oldset = &current->blocked;
signr = get_signal_to_deliver(&info, &ka, regs, NULL);
if (signr > 0) {
handle_syscall_restart(save_r0, regs, &ka.sa);
/* Whee! Actually deliver the signal. */
if (handle_signal(signr, &ka, &info, oldset,
if (handle_signal(signr, &ka, &info,
regs, save_r0) == 0) {
/*
* A signal was successfully delivered; the saved

13
arch/sh/kernel/signal_64.c
View File

@ -45,7 +45,7 @@
static int
handle_signal(unsigned long sig, siginfo_t *info, struct k_sigaction *ka,
sigset_t *oldset, struct pt_regs * regs);
struct pt_regs * regs);
static inline void
handle_syscall_restart(struct pt_regs *regs, struct sigaction *sa)
@ -88,7 +88,6 @@ static void do_signal(struct pt_regs *regs)
siginfo_t info;
int signr;
struct k_sigaction ka;
sigset_t *oldset;
/*
* We want the common case to go fast, which
@ -99,17 +98,12 @@ static void do_signal(struct pt_regs *regs)
if (!user_mode(regs))
return;
if (current_thread_info()->status & TS_RESTORE_SIGMASK)
oldset = &current->saved_sigmask;
else
oldset = &current->blocked;
signr = get_signal_to_deliver(&info, &ka, regs, 0);
if (signr > 0) {
handle_syscall_restart(regs, &ka.sa);
/* Whee! Actually deliver the signal. */
if (handle_signal(signr, &info, &ka, oldset, regs) == 0) {
if (handle_signal(signr, &info, &ka, regs) == 0) {
/*
* If a signal was successfully delivered, the
* saved sigmask is in its frame, and we can
@ -656,8 +650,9 @@ static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
*/
static int
handle_signal(unsigned long sig, siginfo_t *info, struct k_sigaction *ka,
sigset_t *oldset, struct pt_regs * regs)
struct pt_regs * regs)
{
sigset_t *oldset = sigmask_to_save();
int ret;
/* Set up the stack frame */

11
arch/sparc/kernel/signal_32.c
View File

@ -451,8 +451,9 @@ static int setup_rt_frame(struct k_sigaction *ka, struct pt_regs *regs,
static inline int
handle_signal(unsigned long signr, struct k_sigaction *ka,
siginfo_t *info, sigset_t *oldset, struct pt_regs *regs)
siginfo_t *info, struct pt_regs *regs)
{
sigset_t *oldset = sigmask_to_save();
int err;
if (ka->sa.sa_flags & SA_SIGINFO)
@ -498,7 +499,6 @@ static void do_signal(struct pt_regs *regs, unsigned long orig_i0)
{
struct k_sigaction ka;
int restart_syscall;
sigset_t *oldset;
siginfo_t info;
int signr;
@ -523,11 +523,6 @@ static void do_signal(struct pt_regs *regs, unsigned long orig_i0)
if (pt_regs_is_syscall(regs) && (regs->psr & PSR_C))
regs->u_regs[UREG_G6] = orig_i0;
if (test_thread_flag(TIF_RESTORE_SIGMASK))
oldset = &current->saved_sigmask;
else
oldset = &current->blocked;
signr = get_signal_to_deliver(&info, &ka, regs, NULL);
/* If the debugger messes with the program counter, it clears
@ -544,7 +539,7 @@ 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) {
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

7
arch/sparc/kernel/signal_64.c
View File

@ -512,7 +512,7 @@ static void do_signal(struct pt_regs *regs, unsigned long orig_i0)
{
struct k_sigaction ka;
int restart_syscall;
sigset_t *oldset;
sigset_t *oldset = sigmask_to_save();
siginfo_t info;
int signr;
@ -538,11 +538,6 @@ static void do_signal(struct pt_regs *regs, unsigned long orig_i0)
(regs->tstate & (TSTATE_XCARRY | TSTATE_ICARRY)))
regs->u_regs[UREG_G6] = orig_i0;
if (current_thread_info()->status & TS_RESTORE_SIGMASK)
oldset = &current->saved_sigmask;
else
oldset = &current->blocked;
#ifdef CONFIG_COMPAT
if (test_thread_flag(TIF_32BIT)) {
extern void do_signal32(sigset_t *, struct pt_regs *);

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

@ -243,9 +243,10 @@ static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
*/
static int handle_signal(unsigned long sig, siginfo_t *info,
struct k_sigaction *ka, sigset_t *oldset,
struct k_sigaction *ka,
struct pt_regs *regs)
{
sigset_t *oldset = sigmask_to_save();
int ret;
/* Are we from a system call? */
@ -299,7 +300,6 @@ void do_signal(struct pt_regs *regs)
siginfo_t info;
int signr;
struct k_sigaction ka;
sigset_t *oldset;
/*
* i386 will check if we're coming from kernel mode and bail out
@ -308,15 +308,10 @@ void do_signal(struct pt_regs *regs)
* helpful, we can reinstate the check on "!user_mode(regs)".
*/
if (current_thread_info()->status & TS_RESTORE_SIGMASK)
oldset = &current->saved_sigmask;
else
oldset = &current->blocked;
signr = get_signal_to_deliver(&info, &ka, regs, NULL);
if (signr > 0) {
/* Whee! Actually deliver the signal. */
if (handle_signal(signr, &info, &ka, oldset, regs) == 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,

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

@ -23,9 +23,9 @@ EXPORT_SYMBOL(unblock_signals);
* OK, we're invoking a handler
*/
static int handle_signal(struct pt_regs *regs, unsigned long signr,
struct k_sigaction *ka, siginfo_t *info,
sigset_t *oldset)
struct k_sigaction *ka, siginfo_t *info)
{
sigset_t *oldset = sigmask_to_save();
unsigned long sp;
int err;
@ -77,14 +77,9 @@ static int kern_do_signal(struct pt_regs *regs)
int sig, handled_sig = 0;
while ((sig = get_signal_to_deliver(&info, &ka_copy, regs, NULL)) > 0) {
sigset_t *oldset;
if (test_thread_flag(TIF_RESTORE_SIGMASK))
oldset = &current->saved_sigmask;
else
oldset = &current->blocked;
handled_sig = 1;
/* Whee! Actually deliver the signal. */
if (!handle_signal(regs, sig, &ka_copy, &info, oldset)) {
if (!handle_signal(regs, sig, &ka_copy, &info)) {
/*
* a signal was successfully delivered; the saved
* sigmask will have been stored in the signal frame,

13
arch/unicore32/kernel/signal.c
View File

@ -313,12 +313,11 @@ 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,
siginfo_t *info, sigset_t *oldset,
struct pt_regs *regs, int syscall)
siginfo_t *info, struct pt_regs *regs, int syscall)
{
struct thread_info *thread = current_thread_info();
struct task_struct *tsk = current;
sigset_t blocked;
sigset_t *oldset = sigmask_to_save();
int usig = sig;
int ret;
@ -404,13 +403,7 @@ static void do_signal(struct pt_regs *regs, int syscall)
signr = get_signal_to_deliver(&info, &ka, regs, NULL);
if (signr > 0) {
sigset_t *oldset;
if (test_thread_flag(TIF_RESTORE_SIGMASK))
oldset = &current->saved_sigmask;
else
oldset = &current->blocked;
if (handle_signal(signr, &ka, &info, oldset, regs, syscall)
if (handle_signal(signr, &ka, &info, regs, syscall)
== 0) {
/*
* A signal was successfully delivered; the saved

5
arch/x86/kernel/signal.c
View File

@ -647,12 +647,9 @@ setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
struct pt_regs *regs)
{
int usig = signr_convert(sig);
sigset_t *set = &current->blocked;
sigset_t *set = sigmask_to_save();
int ret;
if (current_thread_info()->status & TS_RESTORE_SIGMASK)
set = &current->saved_sigmask;
/* Set up the stack frame */
if (is_ia32) {
if (ka->sa.sa_flags & SA_SIGINFO)

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

@ -452,16 +452,10 @@ static void do_signal(struct pt_regs *regs)
siginfo_t info;
int signr;
struct k_sigaction ka;
sigset_t oldset;
if (try_to_freeze())
goto no_signal;
if (test_thread_flag(TIF_RESTORE_SIGMASK))
oldset = &current->saved_sigmask;
else
oldset = &current->blocked;
task_pt_regs(current)->icountlevel = 0;
signr = get_signal_to_deliver(&info, &ka, regs, NULL);
@ -501,7 +495,7 @@ static void do_signal(struct pt_regs *regs)
/* Whee! Actually deliver the signal. */
/* Set up the stack frame */
ret = setup_frame(signr, &ka, &info, oldset, regs);
ret = setup_frame(signr, &ka, &info, sigmask_to_save(), regs);
if (ret)
return;

8
include/linux/sched.h
View File

@ -2213,6 +2213,14 @@ static inline void restore_saved_sigmask(void)
set_current_blocked(&current->saved_sigmask);
}
static inline sigset_t *sigmask_to_save(void)
{
sigset_t *res = &current->blocked;
if (unlikely(test_restore_sigmask()))
res = &current->saved_sigmask;
return res;
}
static inline int kill_cad_pid(int sig, int priv)
{
return kill_pid(cad_pid, sig, priv);