}
}
+EXPORT_SYMBOL_GPL(flush_signal_handlers);
/* Notify the system that a driver wants to block all signals for this
* process, and wants to be notified if any signals at all were to be
unsigned long flags;
int ret;
+ if (!vx_check(vx_task_xid(p), VX_ADMIN|VX_WATCH|VX_IDENT))
+ return -ESRCH;
+
ret = check_kill_permission(sig, info, p);
if (!ret && sig && p->sighand) {
spin_lock_irqsave(&p->sighand->siglock, flags);
spin_unlock_irqrestore(&sighand->siglock, flags);
}
+int print_fatal_signals = 0;
+
+static void print_fatal_signal(struct pt_regs *regs, int signr)
+{
+ int i;
+ unsigned char insn;
+ printk("%s/%d: potentially unexpected fatal signal %d.\n",
+ current->comm, current->pid, signr);
+
+#ifdef __i386__
+ printk("code at %08lx: ", regs->eip);
+ for (i = 0; i < 16; i++) {
+ __get_user(insn, (unsigned char *)(regs->eip + i));
+ printk("%02x ", insn);
+ }
+#endif
+ printk("\n");
+ show_regs(regs);
+}
+
+static int __init setup_print_fatal_signals(char *str)
+{
+ get_option (&str, &print_fatal_signals);
+
+ return 1;
+}
+
+__setup("print-fatal-signals=", setup_print_fatal_signals);
#ifndef HAVE_ARCH_GET_SIGNAL_TO_DELIVER
if (!signr)
break; /* will return 0 */
+ if ((signr == SIGSEGV) && print_fatal_signals) {
+ spin_unlock_irq(¤t->sighand->siglock);
+ print_fatal_signal(regs, signr);
+ spin_lock_irq(¤t->sighand->siglock);
+ }
if ((current->ptrace & PT_PTRACED) && signr != SIGKILL) {
ptrace_signal_deliver(regs, cookie);
* Anything else is fatal, maybe with a core dump.
*/
current->flags |= PF_SIGNALED;
+ if (print_fatal_signals)
+ print_fatal_signal(regs, signr);
if (sig_kernel_coredump(signr) &&
do_coredump((long)signr, signr, regs)) {
/*