BSD 4_1c_2 release

[unix-history] / usr / src / bin / kill.c

static  char *sccsid = "@(#)kill.c      4.2 (Berkeley) 10/10/80";
/*
* kill - send signal to process
*/

#include <signal.h>
#include <ctype.h>

char *signm[] = { 0,
"HUP", "INT", "QUIT", "ILL", "TRAP", "IOT", "EMT", "FPE",       /* 1-8 */
"KILL", "BUS", "SEGV", "SYS", "PIPE", "ALRM", "TERM", 0,        /* 9-16 */
"STOP", "TSTP", "CONT", "CHLD", "TTIN", "TTOU", "TINT", "XCPU", /* 17-24 */
"XFSZ", 0, 0, 0, 0, 0, 0, 0,                                    /* 25-31 */
};

main(argc, argv)
char **argv;
{
       register signo, pid, res;
       int errlev;
       extern char *sys_errlist[];
       extern errno;

       errlev = 0;
       if (argc <= 1) {
       usage:
               printf("usage: kill [ -sig ] pid ...\n");
               printf("for a list of signals: kill -l\n");
               exit(2);
       }
       if (*argv[1] == '-') {
               if (argv[1][1] == 'l') {
                       for (signo = 1; signo <= NSIG; signo++) {
                               if (signm[signo])
                                       printf("%s ", signm[signo]);
                               if (signo == 16)
                                       printf("\n");
                       }
                       printf("\n");
                       exit(0);
               } else if (isdigit(argv[1][1])) {
                       signo = atoi(argv[1]+1);
                       if (signo < 1 || signo > NSIG) {
                               printf("kill: %s: number out of range\n",
                                   argv[1]);
                               exit(1);
                       }
               } else {
                       char *name = argv[1]+1;
                       for (signo = 1; signo <= NSIG; signo++)
                       if (signm[signo] && !strcmp(signm[signo], name))
                               goto foundsig;
                       printf("kill: %s: unknown signal; kill -l lists signals\n", name);
                       exit(1);
foundsig:
                       ;
               }
               argc--;
               argv++;
       } else
               signo = SIGTERM;
       argv++;
       while (argc > 1) {
               if (**argv<'0' || **argv>'9')
                       goto usage;
               res = kill(pid = atoi(*argv), signo);
               if (res<0) {
                       printf("%u: %s\n", pid, sys_errlist[errno]);
                       errlev = 1;
               }
               argc--;
               argv++;
       }
       return(errlev);
}