2.11BSD#431 - /usr/src/bin/kill.c

   1: static  char *sccsid = "@(#)kill.c	4.4.1 (2.11BSD) 1996/3/21";
   2: /*
   3:  * kill - send signal to process
   4:  */
   5: 
   6: #include <signal.h>
   7: #include <ctype.h>
   8: 
   9: char *signm[] = { 0,
  10: "HUP", "INT", "QUIT", "ILL", "TRAP", "IOT", "EMT", "FPE",   /* 1-8 */
  11: "KILL", "BUS", "SEGV", "SYS", "PIPE", "ALRM", "TERM", "URG",    /* 9-16 */
  12: "STOP", "TSTP", "CONT", "CHLD", "TTIN", "TTOU", "IO", "XCPU",   /* 17-24 */
  13: "XFSZ", "VTALRM", "PROF", "WINCH", 0, "USR1", "USR2", 0,    /* 25-31 */
  14: };
  15: 
  16: main(argc, argv)
  17: char **argv;
  18: {
  19:     register signo, pid, res;
  20:     int errlev;
  21:     extern errno;
  22: 
  23:     errlev = 0;
  24:     if (argc <= 1) {
  25:     usage:
  26:         printf("usage: kill [ -sig ] pid ...\n");
  27:         printf("for a list of signals: kill -l\n");
  28:         exit(2);
  29:     }
  30:     if (*argv[1] == '-') {
  31:         if (argv[1][1] == 'l') {
  32:             for (signo = 0; signo <= NSIG; signo++) {
  33:                 if (signm[signo])
  34:                     printf("%s ", signm[signo]);
  35:                 if (signo == 16)
  36:                     printf("\n");
  37:             }
  38:             printf("\n");
  39:             exit(0);
  40:         } else if (isdigit(argv[1][1])) {
  41:             signo = atoi(argv[1]+1);
  42:             if (signo < 0 || signo > NSIG) {
  43:                 printf("kill: %s: number out of range\n",
  44:                     argv[1]);
  45:                 exit(1);
  46:             }
  47:         } else {
  48:             char *name = argv[1]+1;
  49:             for (signo = 0; signo <= NSIG; signo++)
  50:                 if (signm[signo] && !strcmp(signm[signo], name))
  51:                     goto foundsig;
  52:             printf("kill: %s: unknown signal; kill -l lists signals\n", name);
  53:             exit(1);
  54: foundsig:
  55:             ;
  56:         }
  57:         argc--;
  58:         argv++;
  59:     } else
  60:         signo = SIGTERM;
  61:     argv++;
  62:     while (argc > 1) {
  63:         if (!(isdigit(**argv) || **argv == '-'))
  64:             goto usage;
  65:         res = kill(pid = atoi(*argv), signo);
  66:         if (res<0) {
  67:             printf("%u: %s\n", pid, strerror(errno));
  68:             errlev = 1;
  69:         }
  70:         argc--;
  71:         argv++;
  72:     }
  73:     return(errlev);
  74: }

Defined functions

Defined variables