Loading...
#include <stdlib.h> #include <signal.h> #include <errno.h> #include "syscall.h" #include "pthread_impl.h" void __restore(), __restore_rt(); int __libc_sigaction(int sig, const struct sigaction *sa, struct sigaction *old) { struct { void *handler; unsigned long flags; void (*restorer)(void); sigset_t mask; } ksa, kold; long pksa=0, pkold=0; if (sa) { ksa.handler = sa->sa_handler; ksa.flags = sa->sa_flags | SA_RESTORER; ksa.restorer = (sa->sa_flags & SA_SIGINFO) ? __restore_rt : __restore; ksa.mask = sa->sa_mask; pksa = (long)&ksa; } if (old) pkold = (long)&kold; if (syscall(SYS_rt_sigaction, sig, pksa, pkold, 8)) return -1; if (old) { old->sa_handler = kold.handler; old->sa_flags = kold.flags; old->sa_mask = kold.mask; } return 0; } int __sigaction(int sig, const struct sigaction *sa, struct sigaction *old) { if (sig == SIGCANCEL || sig == SIGSYSCALL) { errno = EINVAL; return -1; } return __libc_sigaction(sig, sa, old); } weak_alias(__sigaction, sigaction); |