101 lines
2 KiB
C
101 lines
2 KiB
C
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/* kill - send a signal to a process Author: Adri Koppes */
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#include <sys/types.h>
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#include <errno.h>
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#include <signal.h>
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#include <stdlib.h>
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#include <string.h>
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#include <stdio.h>
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_PROTOTYPE(int main, (int argc, char **argv));
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_PROTOTYPE(void usage, (void));
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/* Table of signal names. */
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struct signames {
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char *name;
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int sig;
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} signames[] = {
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{ "HUP", SIGHUP },
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{ "INT", SIGINT },
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{ "QUIT", SIGQUIT },
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{ "ILL", SIGILL },
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{ "TRAP", SIGTRAP },
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{ "ABRT", SIGABRT },
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{ "IOT", SIGIOT },
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{ "FPE", SIGFPE },
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{ "KILL", SIGKILL },
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{ "USR1", SIGUSR1 },
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{ "SEGV", SIGSEGV },
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{ "USR2", SIGUSR2 },
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{ "PIPE", SIGPIPE },
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{ "ALRM", SIGALRM },
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{ "TERM", SIGTERM },
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{ "EMT", SIGEMT },
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{ "BUS", SIGBUS },
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{ "CHLD", SIGCHLD },
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{ "CONT", SIGCONT },
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{ "STOP", SIGSTOP },
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{ "TSTP", SIGTSTP },
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{ "TTIN", SIGTTIN },
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{ "TTOU", SIGTTOU },
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#ifdef SIGWINCH
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{ "WINCH", SIGWINCH },
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#endif
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{ NULL, 0 }
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};
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int main(argc, argv)
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int argc;
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char **argv;
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{
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pid_t proc;
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int ex = 0, sig = SIGTERM;
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char *end;
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long l;
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unsigned long ul;
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struct sigaction sa;
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int i, doit;
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struct signames *snp;
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if (argc > 1 && argv[1][0] == '-') {
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sig = -1;
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for (snp = signames; snp->name != NULL; snp++) { /* symbolic? */
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if (strcmp(snp->name, argv[1] + 1) == 0) {
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sig = snp->sig;
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break;
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}
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}
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if (sig < 0) { /* numeric? */
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ul = strtoul(argv[1] + 1, &end, 10);
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if (end == argv[1] + 1 || *end != 0 || ul > _NSIG) usage();
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sig = ul;
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}
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argv++;
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argc--;
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}
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sa.sa_flags = 0;
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sigemptyset(&sa.sa_mask);
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sa.sa_handler = SIG_IGN; /* try not to kill yourself */
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(void) sigaction(sig, &sa, (struct sigaction *) NULL);
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for (doit = 0; doit <= 1; doit++) {
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for (i = 1; i < argc; i++) {
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l = strtoul(argv[i], &end, 10);
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if (end == argv[i] || *end != 0 || (pid_t) l != l) usage();
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proc = l;
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if (doit && kill(proc, sig) < 0) {
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fprintf(stderr, "kill: %d: %s\n",
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proc, strerror(errno));
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ex = 1;
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}
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}
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}
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return(ex);
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}
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void usage()
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{
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fprintf(stderr, "Usage: kill [-sig] pid\n");
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exit(1);
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}
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