/*===========================================================================*
* do_sigreturn *
*===========================================================================*/
PUBLIC int do_sigreturn()
{
/* A user signal handler is done. Restore context and check for
* pending unblocked signals.
*/
int r;
mp->mp_sigmask = (sigset_t) sig_set;
sigdelset(&mp->mp_sigmask, SIGKILL);
r = sys_sigreturn(who, (vir_bytes)sig_context, sig_flags);
check_pending();
return(r);
}
/*===========================================================================*
* do_sigreturn *
*===========================================================================*/
PUBLIC int do_sigreturn()
{
/* A user signal handler is done. Restore context and check for
* pending unblocked signals.
*/
int r;
mp->mp_sigmask = (sigset_t) m_in.sig_set;
sigdelset(&mp->mp_sigmask, SIGKILL);
r = sys_sigreturn(who, (struct sigmsg *) m_in.sig_context);
check_pending(mp);
return(r);
}
/*===========================================================================*
* do_sigreturn *
*===========================================================================*/
int do_sigreturn(void)
{
/* A user signal handler is done. Restore context and check for
* pending unblocked signals.
*/
int r;
assert(!(mp->mp_flags & (PROC_STOPPED | VFS_CALL | UNPAUSED)));
mp->mp_sigmask = m_in.m_lc_pm_sigset.set;
sigdelset(&mp->mp_sigmask, SIGKILL);
sigdelset(&mp->mp_sigmask, SIGSTOP);
r = sys_sigreturn(who_e, (struct sigmsg *)m_in.m_lc_pm_sigset.ctx);
check_pending(mp);
return(r);
}
static int signal_return(struct mm_struct *mm, struct pt_regs *regs,
unsigned long address, unsigned long error_code)
{
u16 instruction;
int rc;
#ifdef CONFIG_COMPAT
int compat;
#endif
pagefault_disable();
rc = __get_user(instruction, (u16 __user *) regs->psw.addr);
pagefault_enable();
if (rc)
return -EFAULT;
up_read(&mm->mmap_sem);
clear_tsk_thread_flag(current, TIF_SINGLE_STEP);
#ifdef CONFIG_COMPAT
compat = test_tsk_thread_flag(current, TIF_31BIT);
if (compat && instruction == 0x0a77)
sys32_sigreturn(regs);
else if (compat && instruction == 0x0aad)
sys32_rt_sigreturn(regs);
else
#endif
if (instruction == 0x0a77)
sys_sigreturn(regs);
else if (instruction == 0x0aad)
sys_rt_sigreturn(regs);
else {
current->thread.prot_addr = address;
current->thread.trap_no = error_code;
do_sigsegv(regs, error_code, SEGV_MAPERR, address);
}
return 0;
}
/* Wrappers to put regs in place */
asmlinkage int sys_sigreturn_wrapper(void)
{
return sys_sigreturn(task_pt_regs(current));
}