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#include <signal.h>
#include <errno.h>
#include "syscall.h"
#include "libc.h"
#include "pthread_impl.h"
int __libc_sigprocmask(int how, const sigset_t *set, sigset_t *old)
{
return syscall(SYS_rt_sigprocmask, how, set, old, 8);
}
int __sigprocmask(int how, const sigset_t *set, sigset_t *old)
{
sigset_t tmp;
if (how > 2U) {
errno = EINVAL;
return -1;
}
/* Disallow blocking thread control signals */
if (set && how != SIG_UNBLOCK) {
tmp = *set;
set = &tmp;
sigdelset(&tmp, SIGCANCEL);
sigdelset(&tmp, SIGSYSCALL);
sigdelset(&tmp, SIGTIMER);
}
return __libc_sigprocmask(how, set, old);
}
weak_alias(__sigprocmask, sigprocmask);
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