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#include <bits/ensure.h>
#include <errno.h>
#include <signal.h>
#include <mlibc/debug.hpp>
#include <mlibc/ansi-sysdeps.hpp>
__sighandler signal(int sn, __sighandler handler) {
struct sigaction sa;
sa.sa_handler = handler;
sa.sa_flags = 0;
sa.sa_mask = 0;
struct sigaction old;
MLIBC_CHECK_OR_ENOSYS(mlibc::sys_sigaction, SIG_ERR);
if(int e = mlibc::sys_sigaction(sn, &sa, &old)){
errno = e;
return SIG_ERR;
}
return old.sa_handler;
}
int raise(int sig) {
MLIBC_CHECK_OR_ENOSYS(mlibc::sys_getpid && mlibc::sys_kill, -1);
pid_t pid = mlibc::sys_getpid();
if (int e = mlibc::sys_kill(pid, sig)) {
errno = e;
return -1;
}
return 0;
}
// This is a POSIX extension, but we have it in here for sigsetjmp
int sigprocmask(int how, const sigset_t *__restrict set, sigset_t *__restrict retrieve) {
MLIBC_CHECK_OR_ENOSYS(mlibc::sys_sigprocmask, -1);
if(int e = mlibc::sys_sigprocmask(how, set, retrieve); e) {
errno = e;
return -1;
}
return 0;
}
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