85 static int xsigaction(int signum, const struct sigaction *restrict newaction,
87 static void set_special_handler(int signum, void (*handler)(int signum));
89 	int signum, void (*handler)(int signum), bool leave);
90 static void sig_handler(int signum);
92 static void set_trap(int signum, const wchar_t *command);
93 static bool is_originally_ignored(int signum);
120 const wchar_t *get_signal_name(int signum)  in get_signal_name()  argument
122     if (signum == 0)  in get_signal_name()
126     if (sigrtmin <= signum && signum <= sigrtmax) {  in get_signal_name()
128 	if (signum == sigrtmin)  in get_signal_name()
130 	if (signum == sigrtmax)  in get_signal_name()
132 	int range = sigrtmax - sigrtmin, diff = signum - sigrtmin;  in get_signal_name()
137 	    name = malloc_wprintf(L"RTMAX-%d", sigrtmax - signum);  in get_signal_name()
142 	if (s->no == signum)  in get_signal_name()
201     int signum;  in parse_signal_number()  local
204     if (!xwcstoi(number, 10, &signum) || signum < 0)  in parse_signal_number()
208     if (signum == 0)  in parse_signal_number()
211     if (SIGRTMIN <= signum && signum <= SIGRTMAX)  in parse_signal_number()
212 	return signum;  in parse_signal_number()
215 	if (s->no == signum)  in parse_signal_number()
216 	    return signum;  in parse_signal_number()
405 int xsigaction(int signum, const struct sigaction *restrict newaction,  in xsigaction()  argument
411     if (sigaction(signum, newaction, &oldaction2) < 0)  in xsigaction()
417     if (sigismember(&originally_defaulted_signals, signum) ||  in xsigaction()
418 	    sigismember(&originally_ignored_signals, signum))  in xsigaction()
422 	sigaddset(&originally_defaulted_signals, signum);  in xsigaction()
424 	sigaddset(&originally_ignored_signals, signum);  in xsigaction()
438 void set_special_handler(int signum, void (*handler)(int signum))  in set_special_handler()  argument
440     if (!is_phantom && sigismember(&trapped_signals, signum))  in set_special_handler()
448     if (xsigaction(signum, &action, &oldaction) >= 0)  in set_special_handler()
450 	    sigaddset(&officially_ignored_signals, signum);  in set_special_handler()
458 void reset_special_handler(int signum, void (*handler)(int signum), bool leave)  in reset_special_handler()  argument
460     if (sigismember(&trapped_signals, signum)) {  in reset_special_handler()
461 	assert(!sigismember(&officially_ignored_signals, signum));  in reset_special_handler()
466     if (sigismember(&officially_ignored_signals, signum))  in reset_special_handler()
477 	sigaction(signum, &action, NULL);  in reset_special_handler()
541 void sig_handler(int signum)  in sig_handler()  argument
546     if (sigrtmin <= signum && signum <= SIGRTMAX) {  in sig_handler()
547 	size_t index = signum - sigrtmin;  in sig_handler()
553 	signal_received[sigindex(signum)] = true;  in sig_handler()
555 	switch (signum) {  in sig_handler()
746     int signum = 0;  in handle_traps()  local
767 		    signum = handled_signal = s->no;  in handle_traps()
791 		    signum = handled_signal = sigrtmin + i;  in handle_traps()
813     return signum;  in handle_traps()
840 void set_trap(int signum, const wchar_t *command)  in set_trap()  argument
842     if (signum == SIGKILL || signum == SIGSTOP) {  in set_trap()
844 		signum == SIGKILL ? L"KILL" : L"STOP");  in set_trap()
852     if (sigrtmin <= signum && signum <= SIGRTMAX) {  in set_trap()
853 	size_t index = signum - sigrtmin;  in set_trap()
859 		    get_signal_name(signum));  in set_trap()
865 	size_t index = sigindex(signum);  in set_trap()
870     if (!is_interactive && *commandp == NULL && is_originally_ignored(signum)) {  in set_trap()
874 	xerror(0, Ngt("SIG%ls cannot be reset"), get_signal_name(signum));  in set_trap()
890     if (signum == 0)  in set_trap()
902 	sigaddset(&officially_ignored_signals, signum);  in set_trap()
904 	sigdelset(&officially_ignored_signals, signum);  in set_trap()
907 	sigdelset(&official_sigmask, signum);  in set_trap()
908 	sigaddset(&trapped_signals, signum);  in set_trap()
909 	sigdelset(&accept_sigmask, signum);  in set_trap()
911 	sigdelset(&trapped_signals, signum);  in set_trap()
914     switch (signum) {  in set_trap()
949     if (xsigaction(signum, &action, NULL) < 0) {  in set_trap()
951 	xerror(saveerrno, "sigaction(SIG%ls)", get_signal_name(signum));  in set_trap()
957 bool is_originally_ignored(int signum)  in is_originally_ignored()  argument
961     if (signum == 0)  in is_originally_ignored()
964     if (sigismember(&originally_ignored_signals, signum))  in is_originally_ignored()
966     if (sigismember(&originally_defaulted_signals, signum))  in is_originally_ignored()
969     xsigaction(signum, NULL, NULL);  in is_originally_ignored()
970     return sigismember(&originally_ignored_signals, signum);  in is_originally_ignored()
1158 static bool print_signal(int signum, const wchar_t *name, bool verbose)
1160 static void signal_job(int signum, const wchar_t *jobname)
1222 	    int signum = get_signal_number_toupper(name);  in trap_builtin()  local
1223 	    if (signum < 0) {  in trap_builtin()
1229 	    if (sigrtmin <= signum && signum <= sigrtmax) {  in trap_builtin()
1230 		int index = signum - sigrtmin;  in trap_builtin()
1237 		if (!print_trap(name, trap_command[sigindex(signum)]))  in trap_builtin()
1263 	    int signum = get_signal_number_toupper(name);  in trap_builtin()  local
1264 	    if (signum < 0) {  in trap_builtin()
1268 	    set_trap(signum, command);  in trap_builtin()
1310     int signum = SIGTERM;  in kill_builtin()  local
1341 		    signum = get_signal_number_toupper(arg);  in kill_builtin()
1342 		    if (signum < 0 || (signum == 0 && !iswdigit(arg[0]))) {  in kill_builtin()
1395 		int signum;  in kill_builtin()  local
1398 		if (xwcstoi(ARGV(optind), 10, &signum) && signum >= 0) {  in kill_builtin()
1399 		    if (signum >= TERMSIGOFFSET)  in kill_builtin()
1400 			signum -= TERMSIGOFFSET;  in kill_builtin()
1401 		    else if (signum >= (TERMSIGOFFSET & 0xFF))  in kill_builtin()
1402 			signum -= (TERMSIGOFFSET & 0xFF);  in kill_builtin()
1404 		    signum = get_signal_number_toupper(ARGV(optind));  in kill_builtin()
1406 		signame = get_signal_name(signum);  in kill_builtin()
1407 		if (signum <= 0 || signame[0] == L'\0') {  in kill_builtin()
1412 		if (!print_signal(signum, signame, verbose))  in kill_builtin()
1424 		signal_job(signum, proc);  in kill_builtin()
1433 		if (kill((pid_t) pid, signum) < 0) {  in kill_builtin()
1447 bool print_signal(int signum, const wchar_t *name, bool verbose)  in print_signal()  argument
1453 	const char *sigdesc = strsignal(signum);  in print_signal()
1455 	    return xprintf("%d\t%-10ls %s\n", signum, name, sigdesc);  in print_signal()
1458 	    return xprintf("%d\t%-10ls\n", signum, name);  in print_signal()
1465 void signal_job(int signum, const wchar_t *jobspec)  in signal_job()  argument
1471     if (kill(-jobpgid, signum) < 0)  in signal_job()