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#include <bits/panic.h>
#include <signal.h>
const char *const sys_siglist[] = {
NULL,
"SIGHUP", /* 1 */
"SIGINT", /* 2 */
"SIGQUIT", /* 3 */
"SIGILL", /* 4 */
"SIGTRAP", /* 5 */
"SIGABRT", /* 6 */
"SIGFPE", /* 8 */
"SIGKILL", /* 9 */
"SIGSEGV", /* 11 */
"SIGPIPE", /* 13 */
"SIGALRM", /* 14 */
"SIGTERM", /* 15 */
"SIGCONT", /* 16 */
"SIGPIPE", /* 17 */
"SIGTSTP", /* 18 */
"SIGTTIN", /* 19 */
"SIGTTOU", /* 20 */
"SIGWINCH", /* 21 */
"SIGCHLD", /* 22 */
};
static struct sigaction sigaction_default = {};
static struct sigaction *sigaction_current[] = {
NULL,
&sigaction_default, /* 1 */
&sigaction_default, /* 2 */
&sigaction_default, /* 3 */
&sigaction_default, /* 4 */
&sigaction_default, /* 5 */
&sigaction_default, /* 6 */
&sigaction_default, /* 8 */
&sigaction_default, /* 9 */
&sigaction_default, /* 11 */
&sigaction_default, /* 13 */
&sigaction_default, /* 14 */
&sigaction_default, /* 15 */
&sigaction_default, /* 16 */
&sigaction_default, /* 17 */
&sigaction_default, /* 18 */
&sigaction_default, /* 19 */
&sigaction_default, /* 20 */
&sigaction_default, /* 21 */
&sigaction_default, /* 22 */
};
int sigaction(int sig, const struct sigaction *act, struct sigaction *oldact) {
const int siglen = sizeof(sigaction_current) / sizeof(sigaction_current[0]);
if (sig >= siglen) {
return errno = EINVAL, -1;
}
if (oldact) {
oldact = sigaction_current[sig];
}
if (act) {
if (sig == SIGKILL) {
return errno = EINVAL, -1;
}
sigaction_current[sig] = (void*)act;
}
return 0;
}
int sigemptyset(sigset_t *set) {
(void)set;
return 0;
}
int sigfillset(sigset_t *set) {
(void)set;
return 0;
}
int sigprocmask(int how, const sigset_t *set, const sigset_t *oldset) {
(void)how; (void)set; (void)oldset;
return 0;
}
int sigsuspend(const sigset_t *mask) {
(void)mask;
__libc_panic("unimplemented");
}
sighandler_t signal(int sig, void (*func)(int)) {
(void)sig; (void)func;
return errno = ENOSYS, SIG_ERR;
}
int kill(pid_t pid, int sig) {
(void)pid; (void)sig;
__libc_panic("unimplemented");
}
int raise(int sig) {
(void)sig;
__libc_panic("unimplemented");
}
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