asmlinkage long sys32_sigsuspend(int history0, int history1, old_sigset_t mask)
{
mask &= _BLOCKABLE;
spin_lock_irq(¤t->sighand->siglock);
current->saved_sigmask = current->blocked;
siginitset(¤t->blocked, mask);
recalc_sigpending();
spin_unlock_irq(¤t->sighand->siglock);
current->state = TASK_INTERRUPTIBLE;
schedule();
set_restore_sigmask();
return -ERESTARTNOHAND;
}
/*
* Atomically swap in the new signal mask, and wait for a signal. Define
* dummy arguments to be able to reach the regs argument. (Note that this
* arrangement relies on old_sigset_t occupying one register.)
*/
int sys_sigsuspend(old_sigset_t mask, long r11, long r12, long r13, long mof,
long srp, struct pt_regs *regs)
{
mask &= _BLOCKABLE;
spin_lock_irq(¤t->sighand->siglock);
current->saved_sigmask = current->blocked;
siginitset(¤t->blocked, mask);
recalc_sigpending();
spin_unlock_irq(¤t->sighand->siglock);
current->state = TASK_INTERRUPTIBLE;
schedule();
set_thread_flag(TIF_RESTORE_SIGMASK);
return -ERESTARTNOHAND;
}
/*
* The OSF/1 sigprocmask calling sequence is different from the
* C sigprocmask() sequence..
*/
SYSCALL_DEFINE2(osf_sigprocmask, int, how, unsigned long, newmask)
{
sigset_t oldmask;
sigset_t mask;
unsigned long res;
siginitset(&mask, newmask & _BLOCKABLE);
res = sigprocmask(how, &mask, &oldmask);
if (!res) {
force_successful_syscall_return();
res = oldmask.sig[0];
}
return res;
}
static long _sigpause_common(old_sigset_t set)
{
set &= _BLOCKABLE;
spin_lock_irq(¤t->sighand->siglock);
current->saved_sigmask = current->blocked;
siginitset(¤t->blocked, set);
recalc_sigpending();
spin_unlock_irq(¤t->sighand->siglock);
current->state = TASK_INTERRUPTIBLE;
schedule();
set_thread_flag(TIF_RESTORE_SIGMASK);
return -ERESTARTNOHAND;
}
/*
* Atomically swap in the new signal mask, and wait for a signal.
*/
long sys_sigsuspend(int history0, int history1, old_sigset_t mask)
{
mask &= _BLOCKABLE;
spin_lock_irq(¤t->sighand->siglock);
current->saved_sigmask = current->blocked;
siginitset(¤t->blocked, mask);
recalc_sigpending();
spin_unlock_irq(¤t->sighand->siglock);
current->state = TASK_INTERRUPTIBLE;
schedule();
set_thread_flag(TIF_RESTORE_SIGMASK);
return -ERESTARTNOHAND;
}
/*
* atomically swap in the new signal mask, and wait for a signal.
*/
asmlinkage int sys_sigsuspend(int restart, unsigned long oldmask, old_sigset_t mask)
{
sigset_t blocked;
current->saved_sigmask = current->blocked;
mask &= _BLOCKABLE;
siginitset(&blocked, mask);
set_current_blocked(&blocked);
current->state = TASK_INTERRUPTIBLE;
schedule();
set_restore_sigmask();
return -ERESTARTNOHAND;
}
/*
* Atomically swap in the new signal mask, and wait for a signal.
*/
SYSCALL_DEFINE1(sigsuspend, old_sigset_t, mask)
{
sigset_t blocked;
current->saved_sigmask = current->blocked;
mask &= _BLOCKABLE;
siginitset(&blocked, mask);
set_current_blocked(&blocked);
current->state = TASK_INTERRUPTIBLE;
schedule();
set_thread_flag(TIF_RESTORE_SIGMASK);
return -ERESTARTNOHAND;
}
static int context_thread(void *startup)
{
struct task_struct *curtask = current;
DECLARE_WAITQUEUE(wait, curtask);
struct k_sigaction sa;
daemonize();
strcpy(curtask->comm, "keventd");
current->flags |= PF_IOTHREAD;
keventd_running = 1;
keventd_task = curtask;
spin_lock_irq(&curtask->sigmask_lock);
siginitsetinv(&curtask->blocked, sigmask(SIGCHLD));
recalc_sigpending(curtask);
spin_unlock_irq(&curtask->sigmask_lock);
complete((struct completion *)startup);
/* Install a handler so SIGCLD is delivered */
sa.sa.sa_handler = SIG_IGN;
sa.sa.sa_flags = 0;
siginitset(&sa.sa.sa_mask, sigmask(SIGCHLD));
do_sigaction(SIGCHLD, &sa, (struct k_sigaction *)0);
/*
* If one of the functions on a task queue re-adds itself
* to the task queue we call schedule() in state TASK_RUNNING
*/
for (;;) {
set_task_state(curtask, TASK_INTERRUPTIBLE);
add_wait_queue(&context_task_wq, &wait);
if (TQ_ACTIVE(tq_context))
set_task_state(curtask, TASK_RUNNING);
schedule();
remove_wait_queue(&context_task_wq, &wait);
run_task_queue(&tq_context);
wake_up(&context_task_done);
if (signal_pending(curtask)) {
while (waitpid(-1, (unsigned int *)0, __WALL|WNOHANG) > 0)
;
spin_lock_irq(&curtask->sigmask_lock);
flush_signals(curtask);
recalc_sigpending(curtask);
spin_unlock_irq(&curtask->sigmask_lock);
}
}
}
asmlinkage long sys32_sigsuspend(int history0, int history1, old_sigset_t mask)
{
sigset_t blocked;
current->saved_sigmask = current->blocked;
mask &= _BLOCKABLE;
siginitset(&blocked, mask);
set_current_blocked(&blocked);
current->state = TASK_INTERRUPTIBLE;
schedule();
set_restore_sigmask();
return -ERESTARTNOHAND;
}
static int _sigpause_common(old_sigset_t set)
{
sigset_t blocked;
current->saved_sigmask = current->blocked;
set &= _BLOCKABLE;
siginitset(&blocked, set);
set_current_blocked(&blocked);
current->state = TASK_INTERRUPTIBLE;
schedule();
set_thread_flag(TIF_RESTORE_SIGMASK);
return -ERESTARTNOHAND;
}
static long _sigpause_common(old_sigset_t set)
{
sigset_t blocked;
current->saved_sigmask = current->blocked;
set &= _BLOCKABLE;
siginitset(&blocked, set);
set_current_blocked(&blocked);
current->state = TASK_INTERRUPTIBLE;
schedule();
set_restore_sigmask();
return -ERESTARTNOHAND;
}
/*
* Atomically swap in the new signal mask, and wait for a signal.
*/
asmlinkage int do_sigsuspend(struct pt_regs *regs)
{
old_sigset_t mask = regs->dn[0];
sigset_t saveset;
mask &= _BLOCKABLE;
spin_lock_irq(¤t->sighand->siglock);
saveset = current->blocked;
siginitset(¤t->blocked, mask);
recalc_sigpending();
spin_unlock_irq(¤t->sighand->siglock);
/*
* Call common handler
*/
return signal_suspend(&saveset, regs);
}
/*
* atomically swap in the new signal mask, and wait for a signal.
* This is really tricky on the Sparc, watch out...
*/
asmlinkage void _sigpause_common(old_sigset_t set, struct pt_regs *regs)
{
sigset_t saveset;
#ifdef CONFIG_SPARC32_COMPAT
if (current->thread.flags & SPARC_FLAG_32BIT) {
extern asmlinkage void _sigpause32_common(old_sigset_t32,
struct pt_regs *);
_sigpause32_common(set, regs);
return;
}
#endif
set &= _BLOCKABLE;
spin_lock_irq(¤t->sigmask_lock);
saveset = current->blocked;
siginitset(¤t->blocked, set);
recalc_sigpending(current);
spin_unlock_irq(¤t->sigmask_lock);
if ((current->thread.flags & SPARC_FLAG_32BIT) != 0) {
regs->tpc = (regs->tnpc & 0xffffffff);
regs->tnpc = (regs->tnpc + 4) & 0xffffffff;
} else {
regs->tpc = regs->tnpc;
regs->tnpc += 4;
}
/* Condition codes and return value where set here for sigpause,
* and so got used by setup_frame, which again causes sigreturn()
* to return -EINTR.
*/
while (1) {
current->state = TASK_INTERRUPTIBLE;
schedule();
/*
* Return -EINTR and set condition code here,
* so the interrupted system call actually returns
* these.
*/
regs->tstate |= (TSTATE_ICARRY|TSTATE_XCARRY);
regs->u_regs[UREG_I0] = EINTR;
if (do_signal(&saveset, regs, 0, 0))
return;
}
}
/*
* Atomically swap in the new signal mask, and wait for a signal.
*/
asmlinkage int do_sigsuspend(struct pt_regs *regs)
{
old_sigset_t mask = regs->d3;
sigset_t saveset;
mask &= _BLOCKABLE;
saveset = current->blocked;
siginitset(¤t->blocked, mask);
recalc_sigpending();
regs->d0 = -EINTR;
while (1) {
current->state = TASK_INTERRUPTIBLE;
schedule();
if (do_signal(&saveset, regs))
return -EINTR;
}
}
/*
* Atomically swap in the new signal mask, and wait for a signal.
*/
int sys_sigsuspend(int history0, int history1, old_sigset_t mask)
{
sigset_t saveset;
mask &= _BLOCKABLE;
spin_lock_irq(¤t->sighand->siglock);
saveset = current->blocked;
siginitset(¤t->blocked, mask);
recalc_sigpending();
spin_unlock_irq(¤t->sighand->siglock);
while (1) {
current->state = TASK_INTERRUPTIBLE;
schedule();
if(kern_do_signal(¤t->thread.regs, &saveset, -EINTR))
return(-EINTR);
}
}
/*
* Atomically swap in the new signal mask, and wait for a signal.
*/
asmlinkage int
sys_sigsuspend(old_sigset_t mask,
unsigned long r5, unsigned long r6, unsigned long r7,
struct pt_regs __regs)
{
mask &= _BLOCKABLE;
spin_lock_irq(¤t->sighand->siglock);
current->saved_sigmask = current->blocked;
siginitset(¤t->blocked, mask);
recalc_sigpending();
spin_unlock_irq(¤t->sighand->siglock);
current->state = TASK_INTERRUPTIBLE;
schedule();
set_restore_sigmask();
return -ERESTARTNOHAND;
}
/*
* atomically swap in the new signal mask, and wait for a signal.
*/
asmlinkage int sys_sigsuspend(int restart, unsigned long oldmask, old_sigset_t mask, struct pt_regs *regs)
{
sigset_t saveset;
mask &= _BLOCKABLE;
spin_lock_irq(¤t->sighand->siglock);
saveset = current->blocked;
siginitset(¤t->blocked, mask);
recalc_sigpending();
spin_unlock_irq(¤t->sighand->siglock);
regs->ARM_r0 = -EINTR;
while (1) {
current->state = TASK_INTERRUPTIBLE;
schedule();
if (do_signal(&saveset, regs, 0))
return regs->ARM_r0;
}
}
asmlinkage int
sparc_sigaction (int sig, const struct old_sigaction *act,
struct old_sigaction *oact)
{
struct k_sigaction new_ka, old_ka;
int ret;
if (sig < 0) {
current->thread.new_signal = 1;
sig = -sig;
}
if (act) {
unsigned long mask;
if (verify_area(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))
return -EFAULT;
__get_user(new_ka.sa.sa_flags, &act->sa_flags);
__get_user(mask, &act->sa_mask);
siginitset(&new_ka.sa.sa_mask, mask);
new_ka.ka_restorer = NULL;
}
ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL);
if (!ret && oact) {
/* In the clone() case we could copy half consistant
* state to the user, however this could sleep and
* deadlock us if we held the signal lock on SMP. So for
* now I take the easy way out and do no locking.
*/
if (verify_area(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))
return -EFAULT;
__put_user(old_ka.sa.sa_flags, &oact->sa_flags);
__put_user(old_ka.sa.sa_mask.sig[0], &oact->sa_mask);
}
return ret;
}
/*
* Atomically swap in the new signal mask, and wait for a signal.
*/
asmlinkage int
do_sigsuspend(old_sigset_t mask, struct pt_regs *reg, struct switch_stack *sw)
{
sigset_t oldset;
mask &= _BLOCKABLE;
spin_lock_irq(¤t->sigmask_lock);
oldset = current->blocked;
siginitset(¤t->blocked, mask);
recalc_sigpending(current);
spin_unlock_irq(¤t->sigmask_lock);
while (1) {
current->state = TASK_INTERRUPTIBLE;
schedule();
if (do_signal(&oldset, reg, sw, 0, 0))
return -EINTR;
}
}
asmlinkage int sys32_sigaction(int sig, const struct sigaction32 *act,
struct sigaction32 *oact)
{
struct k_sigaction new_ka, old_ka;
int ret;
int err = 0;
if (act) {
old_sigset_t mask;
s32 handler;
if (!access_ok(VERIFY_READ, act, sizeof(*act)))
return -EFAULT;
err |= __get_user(handler, &act->sa_handler);
new_ka.sa.sa_handler = (__sighandler_t)(s64)handler;
err |= __get_user(new_ka.sa.sa_flags, &act->sa_flags);
err |= __get_user(mask, &act->sa_mask.sig[0]);
if (err)
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)))
return -EFAULT;
err |= __put_user(old_ka.sa.sa_flags, &oact->sa_flags);
err |= __put_user((u32)(u64)old_ka.sa.sa_handler,
&oact->sa_handler);
BUG();
// err |= __put_user(old_ka.sa.sa_mask.sig[0], oact->sa_mask.sig);
err |= __put_user(0, &oact->sa_mask.sig[1]);
err |= __put_user(0, &oact->sa_mask.sig[2]);
err |= __put_user(0, &oact->sa_mask.sig[3]);
if (err)
return -EFAULT;
}
return ret;
}
/*
* Atomically swap in the new signal mask, and wait for a signal.
*/
asmlinkage int
do_sigsuspend(old_sigset_t mask, struct pt_regs *regs, struct switch_stack *sw)
{
mask &= _BLOCKABLE;
spin_lock_irq(¤t->sighand->siglock);
current->saved_sigmask = current->blocked;
siginitset(¤t->blocked, mask);
recalc_sigpending();
spin_unlock_irq(¤t->sighand->siglock);
/* Indicate EINTR on return from any possible signal handler,
which will not come back through here, but via sigreturn. */
regs->r0 = EINTR;
regs->r19 = 1;
current->state = TASK_INTERRUPTIBLE;
schedule();
set_thread_flag(TIF_RESTORE_SIGMASK);
return -ERESTARTNOHAND;
}
/*
* Atomically swap in the new signal mask, and wait for a signal.
*/
asmlinkage int
sys32_sigsuspend(struct pt_regs * regs,int history0, int history1, old_sigset_t mask)
{
sigset_t saveset;
mask &= _BLOCKABLE;
spin_lock_irq(¤t->sighand->siglock);
saveset = current->blocked;
siginitset(¤t->blocked, mask);
recalc_sigpending();
spin_unlock_irq(¤t->sighand->siglock);
regs->gprs[2] = -EINTR;
while (1) {
set_current_state(TASK_INTERRUPTIBLE);
schedule();
if (do_signal(regs, &saveset))
return -EINTR;
}
}
int xtensa_sigsuspend(struct pt_regs *regs)
{
old_sigset_t mask = (old_sigset_t) regs->areg[3];
sigset_t saveset;
mask &= _BLOCKABLE;
spin_lock_irq(¤t->sighand->siglock);
saveset = current->blocked;
siginitset(¤t->blocked, mask);
recalc_sigpending();
spin_unlock_irq(¤t->sighand->siglock);
regs->areg[2] = -EINTR;
while (1) {
current->state = TASK_INTERRUPTIBLE;
schedule();
if (do_signal(regs, &saveset))
return -EINTR;
}
}
/*
* Atomically swap in the new signal mask, and wait for a signal.
*/
asmlinkage int
sys_sigsuspend(old_sigset_t mask, struct pt_regs *regs)
{
sigset_t saveset;
mask &= _BLOCKABLE;
spin_lock_irq(¤t->sigmask_lock);
saveset = current->blocked;
siginitset(¤t->blocked, mask);
recalc_sigpending(current);
spin_unlock_irq(¤t->sigmask_lock);
regs->gpr[GPR_RVAL] = -EINTR;
while (1) {
current->state = TASK_INTERRUPTIBLE;
schedule();
if (do_signal(regs, &saveset))
return -EINTR;
}
}
/*
* atomically swap in the new signal mask, and wait for a signal.
*/
asmlinkage int sys_sigsuspend(int restart, unsigned long oldmask, old_sigset_t mask, struct pt_regs *regs)
{
sigset_t saveset;
printk_dbg("XXX - %s() called\n", __func__);
mask &= _BLOCKABLE;
spin_lock_irq(¤t->sighand->siglock);
saveset = current->blocked;
siginitset(¤t->blocked, mask);
recalc_sigpending();
spin_unlock_irq(¤t->sighand->siglock);
ARM_put_r0(regs, -ERESTART_RESTARTBLOCK);
while (1) {
current->state = TASK_INTERRUPTIBLE;
schedule();
if (l4_do_signal(&saveset, regs, 1))
return ARM_r0(regs);
}
}
asmlinkage int
sunos_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 (verify_area(VERIFY_READ, act, sizeof(*act)) ||
__get_user(new_ka.sa.sa_handler, &act->sa_handler) ||
__get_user(new_ka.sa.sa_flags, &act->sa_flags))
return -EFAULT;
__get_user(mask, &act->sa_mask);
new_ka.sa.sa_restorer = NULL;
new_ka.ka_restorer = NULL;
siginitset(&new_ka.sa.sa_mask, mask);
new_ka.sa.sa_flags ^= SUNOS_SV_INTERRUPT;
}
ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL);
if (!ret && oact) {
/* In the clone() case we could copy half consistent
* state to the user, however this could sleep and
* deadlock us if we held the signal lock on SMP. So for
* now I take the easy way out and do no locking.
* But then again we don't support SunOS lwp's anyways ;-)
*/
old_ka.sa.sa_flags ^= SUNOS_SV_INTERRUPT;
if (verify_area(VERIFY_WRITE, oact, sizeof(*oact)) ||
__put_user(old_ka.sa.sa_handler, &oact->sa_handler) ||
__put_user(old_ka.sa.sa_flags, &oact->sa_flags))
return -EFAULT;
__put_user(old_ka.sa.sa_mask.sig[0], &oact->sa_mask);
}
return ret;
}
/*
* Atomically swap in the new signal mask, and wait for a signal.
*/
asmlinkage int
sys_sigsuspend(old_sigset_t mask,
unsigned long r5, unsigned long r6, unsigned long r7,
struct pt_regs regs)
{
sigset_t saveset;
mask &= _BLOCKABLE;
spin_lock_irq(¤t->sighand->siglock);
saveset = current->blocked;
siginitset(¤t->blocked, mask);
recalc_sigpending();
spin_unlock_irq(¤t->sighand->siglock);
regs.regs[0] = -EINTR;
while (1) {
current->state = TASK_INTERRUPTIBLE;
schedule();
if (do_signal(®s, &saveset))
return -EINTR;
}
}
asmlinkage long compat_sys_sigaction(int sig, struct old_sigaction32 __user *act,
struct old_sigaction32 __user *oact)
{
struct k_sigaction new_ka, old_ka;
int ret;
if (sig < 0) {
set_thread_flag(TIF_NEWSIGNALS);
sig = -sig;
}
if (act) {
compat_old_sigset_t mask;
u32 u_handler, u_restorer;
ret = get_user(u_handler, &act->sa_handler);
new_ka.sa.sa_handler = compat_ptr(u_handler);
ret |= __get_user(u_restorer, &act->sa_restorer);
new_ka.sa.sa_restorer = compat_ptr(u_restorer);
ret |= __get_user(new_ka.sa.sa_flags, &act->sa_flags);
ret |= __get_user(mask, &act->sa_mask);
if (ret)
return ret;
new_ka.ka_restorer = NULL;
siginitset(&new_ka.sa.sa_mask, mask);
}
ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL);
if (!ret && oact) {
ret = put_user(ptr_to_compat(old_ka.sa.sa_handler), &oact->sa_handler);
ret |= __put_user(ptr_to_compat(old_ka.sa.sa_restorer), &oact->sa_restorer);
ret |= __put_user(old_ka.sa.sa_flags, &oact->sa_flags);
ret |= __put_user(old_ka.sa.sa_mask.sig[0], &oact->sa_mask);
}
return ret;
}
SYSCALL_DEFINE3(sigaction, int, sig, const struct sigaction __user *, act,
struct sigaction __user *, oact)
{
struct k_sigaction new_ka, old_ka;
int ret;
int err = 0;
if (act) {
old_sigset_t mask;
if (!access_ok(VERIFY_READ, act, sizeof(*act)))
return -EFAULT;
err |= __get_user(new_ka.sa.sa_handler, &act->sa_handler);
err |= __get_user(new_ka.sa.sa_flags, &act->sa_flags);
err |= __get_user(mask, &act->sa_mask.sig[0]);
if (err)
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)))
return -EFAULT;
err |= __put_user(old_ka.sa.sa_flags, &oact->sa_flags);
err |= __put_user(old_ka.sa.sa_handler, &oact->sa_handler);
err |= __put_user(old_ka.sa.sa_mask.sig[0], oact->sa_mask.sig);
err |= __put_user(0, &oact->sa_mask.sig[1]);
err |= __put_user(0, &oact->sa_mask.sig[2]);
err |= __put_user(0, &oact->sa_mask.sig[3]);
if (err)
return -EFAULT;
}
return ret;
}
long sys_sigaction(int sig, const struct old_sigaction *act,
struct old_sigaction *oact)
{
struct k_sigaction new_ka, old_ka;
int ret;
PPCDBG(PPCDBG_SYS64X, "sys_sigaction - running - pid=%ld current=%lx comm=%s \n",
current->pid, current, current->comm);
if (act) {
old_sigset_t mask;
if (verify_area(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))
return -EFAULT;
__get_user(new_ka.sa.sa_flags, &act->sa_flags);
__get_user(mask, &act->sa_mask);
siginitset(&new_ka.sa.sa_mask, mask);
}
ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL);
if (!ret && oact) {
if (verify_area(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))
return -EFAULT;
__put_user(old_ka.sa.sa_flags, &oact->sa_flags);
__put_user(old_ka.sa.sa_mask.sig[0], &oact->sa_mask);
}
return ret;
}