leandrof/linux
1
0
Fork 0
forked from Minki/linux
Code Issues Pull Requests Packages Projects Releases Wiki Activity

avr32: Use get_signal() signal_setup_done()

Browse Source 
Use the more generic functions get_signal() signal_setup_done()
for signal delivery.

Signed-off-by: Richard Weinberger <richard@nod.at>
Acked-by: Hans-Christian Egtvedt <egtvedt@samfundet.no>
This commit is contained in:
Richard Weinberger 2013-10-06 23:00:56 +02:00 committed by Richard Weinberger
parent 00554fa4f8
commit d809709a88
1 changed files with 18 additions and 25 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

43
arch/avr32/kernel/signal.c
View File

@ -138,13 +138,12 @@ get_sigframe(struct k_sigaction *ka, struct pt_regs *regs, int framesize)
}
static int
setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
sigset_t *set, struct pt_regs *regs)
setup_rt_frame(struct ksignal *ksig, sigset_t *set, struct pt_regs *regs)
{
struct rt_sigframe __user *frame;
int err = 0;
frame = get_sigframe(ka, regs, sizeof(*frame));
frame = get_sigframe(&ksig->ka, regs, sizeof(*frame));
err = -EFAULT;
if (!access_ok(VERIFY_WRITE, frame, sizeof (*frame)))
goto out;
@ -164,7 +163,7 @@ setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
err = __put_user(0x3008d733 | (__NR_rt_sigreturn << 20),
&frame->retcode);
err |= copy_siginfo_to_user(&frame->info, info);
err |= copy_siginfo_to_user(&frame->info, &ksig->info);
/* Set up the ucontext */
err |= __put_user(0, &frame->uc.uc_flags);
@ -176,12 +175,12 @@ setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
if (err)
goto out;
regs->r12 = sig;
regs->r12 = ksig->sig;
regs->r11 = (unsigned long) &frame->info;
regs->r10 = (unsigned long) &frame->uc;
regs->sp = (unsigned long) frame;
if (ka->sa.sa_flags & SA_RESTORER)
regs->lr = (unsigned long)ka->sa.sa_restorer;
if (ksig->ka.sa.sa_flags & SA_RESTORER)
regs->lr = (unsigned long)ksig->ka.sa.sa_restorer;
else {
printk(KERN_NOTICE "[%s:%d] did not set SA_RESTORER\n",
current->comm, current->pid);
@ -189,10 +188,10 @@ setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
}
pr_debug("SIG deliver [%s:%d]: sig=%d sp=0x%lx pc=0x%lx->0x%p lr=0x%lx\n",
current->comm, current->pid, sig, regs->sp,
regs->pc, ka->sa.sa_handler, regs->lr);
current->comm, current->pid, ksig->sig, regs->sp,
regs->pc, ksig->ka.sa.sa_handler, regs->lr);
regs->pc = (unsigned long) ka->sa.sa_handler;
regs->pc = (unsigned long)ksig->ka.sa.sa_handler;
out:
return err;
@ -208,15 +207,14 @@ 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,
struct pt_regs *regs, int syscall)
handle_signal(struct ksignal *ksig, struct pt_regs *regs, int syscall)
{
int ret;
/*
* Set up the stack frame
*/
ret = setup_rt_frame(sig, ka, info, sigmask_to_save(), regs);
ret = setup_rt_frame(ksig, sigmask_to_save(), regs);
/*
* Check that the resulting registers are sane
@ -226,10 +224,7 @@ handle_signal(unsigned long sig, struct k_sigaction *ka, siginfo_t *info,
/*
* Block the signal if we were successful.
*/
if (ret != 0)
force_sigsegv(sig, current);
else
signal_delivered(sig, info, ka, regs, 0);
signal_setup_done(ret, ksig, 0);
}
/*
@ -239,9 +234,7 @@ handle_signal(unsigned long sig, struct k_sigaction *ka, siginfo_t *info,
*/
static void do_signal(struct pt_regs *regs, int syscall)
{
siginfo_t info;
int signr;
struct k_sigaction ka;
struct ksignal ksig;
/*
* We want the common case to go fast, which is why we may in
@ -251,18 +244,18 @@ static void do_signal(struct pt_regs *regs, int syscall)
if (!user_mode(regs))
return;
signr = get_signal_to_deliver(&info, &ka, regs, NULL);
get_signal(&ksig);
if (syscall) {
switch (regs->r12) {
case -ERESTART_RESTARTBLOCK:
case -ERESTARTNOHAND:
if (signr > 0) {
if (ksig.sig > 0) {
regs->r12 = -EINTR;
break;
}
/* fall through */
case -ERESTARTSYS:
if (signr > 0 && !(ka.sa.sa_flags & SA_RESTART)) {
if (ksig.sig > 0 && !(ksig.ka.sa.sa_flags & SA_RESTART)) {
regs->r12 = -EINTR;
break;
}
@ -272,13 +265,13 @@ static void do_signal(struct pt_regs *regs, int syscall)
}
}
if (signr == 0) {
if (!ksig.sig) {
/* No signal to deliver -- put the saved sigmask back */
restore_saved_sigmask();
return;
}
handle_signal(signr, &ka, &info, regs, syscall);
handle_signal(&ksig, regs, syscall);
}
asmlinkage void do_notify_resume(struct pt_regs *regs, struct thread_info *ti)