/*
* The trap builtin.
*/
int
trapcmd(int argc __unused, char **argv)
{
char *action;
int signo;
int errors = 0;
int i;
while ((i = nextopt("l")) != '\0') {
switch (i) {
case 'l':
printsignals();
return (0);
}
}
argv = argptr;
if (*argv == NULL) {
for (signo = 0 ; signo < sys_nsig ; signo++) {
if (signo < NSIG && trap[signo] != NULL) {
out1str("trap -- ");
out1qstr(trap[signo]);
if (signo == 0) {
out1str(" EXIT\n");
} else if (sys_signame[signo]) {
out1fmt(" %s\n", sys_signame[signo]);
} else {
out1fmt(" %d\n", signo);
}
}
}
return 0;
}
action = NULL;
if (*argv && sigstring_to_signum(*argv) == -1) {
if (strcmp(*argv, "-") == 0)
argv++;
else {
action = *argv;
argv++;
}
}
for (; *argv; argv++) {
if ((signo = sigstring_to_signum(*argv)) == -1) {
warning("bad signal %s", *argv);
errors = 1;
continue;
}
INTOFF;
if (action)
action = savestr(action);
if (trap[signo])
ckfree(trap[signo]);
trap[signo] = action;
if (signo != 0)
setsignal(signo);
INTON;
}
return errors;
}
/*
* The trap builtin.
*/
int
trapcmd(int argc, char **argv)
{
char *action;
int signo;
if (argc <= 1) {
for (signo = 0 ; signo < _NSIG ; signo++) {
if (trap[signo] != NULL) {
if (signo == 0) {
out1fmt("trap -- '%s' %s\n",
trap[signo], "exit");
} else if (strsigname(signo)) {
out1fmt("trap -- '%s' %s\n",
trap[signo], strsigname(signo));
} else {
out1fmt("trap -- '%s' %d\n",
trap[signo], signo);
}
}
}
return 0;
}
action = NULL;
if (*++argv && strcmp(*argv, "--") == 0)
argv++;
if (*argv && sigstring_to_signum(*argv) == -1) {
if ((*argv)[0] != '-') {
action = *argv;
argv++;
} else if ((*argv)[1] == '\0') {
argv++;
} else if ((*argv)[1] == 'l' && (*argv)[2] == '\0') {
printsignals();
return 0;
} else {
error("bad option %s", *argv);
}
}
while (*argv) {
if ((signo = sigstring_to_signum(*argv)) == -1)
error("bad signal %s", *argv);
INTOFF;
if (action)
action = savestr(action);
if (trap[signo])
ckfree(trap[signo]);
trap[signo] = action;
if (signo != 0)
setsignal(signo);
INTON;
argv++;
}
return 0;
}