LXR toybox/toys/lsb/killall.c

   1/* killall.c - Send signal (default: TERM) to all processes with given names.
   2 *
   3 * Copyright 2012 Andreas Heck <aheck@gmx.de>
   4 *
   5 * http://refspecs.linuxfoundation.org/LSB_4.1.0/LSB-Core-generic/LSB-Core-generic/killall.html
   6
   7USE_KILLALL(NEWTOY(killall, "?s:lqvi", TOYFLAG_USR|TOYFLAG_BIN))
   8
   9config KILLALL
  10  bool "killall"
  11  default y
  12  help
  13    usage: killall [-l] [-iqv] [-SIGNAL|-s SIGNAL] PROCESS_NAME...
  14
  15    Send a signal (default: TERM) to all processes with the given names.
  16
  17    -i  Ask for confirmation before killing
  18    -l  Print list of all available signals
  19    -q  Don't print any warnings or error messages
  20    -s  Send SIGNAL instead of SIGTERM
  21    -v  Report if the signal was successfully sent
  22*/
  23
  24#define FOR_killall
  25#include "toys.h"
  26
  27GLOBALS(
  28  char *s;
  29
  30  int signum;
  31  pid_t cur_pid;
  32  char **names;
  33  short *err;
  34)
  35
  36static int kill_process(pid_t pid, char *name)
  37{
  38  int offset = 0;
  39
  40  if (pid == TT.cur_pid) return 0;
  41
  42  if (toys.optflags & FLAG_i) {
  43    fprintf(stderr, "Signal %s(%d)", name, (int)pid);
  44    if (!yesno(0)) return 0;
  45  }
  46
  47  errno = 0;
  48  kill(pid, TT.signum);
  49  for (;;) {
  50    if (TT.names[offset] == name) {
  51      TT.err[offset] = errno;
  52      break;
  53    } else offset++;
  54  }
  55  if (errno) {
  56    if (!(toys.optflags & FLAG_q)) perror_msg("pid %d", (int)pid);
  57  } else if (toys.optflags & FLAG_v)
  58    printf("Killed %s(%d) with signal %d\n", name, pid, TT.signum);
  59
  60  return 0;
  61}
  62
  63void killall_main(void)
  64{
  65  int i;
  66
  67  TT.names = toys.optargs;
  68  TT.signum = SIGTERM;
  69
  70  if (toys.optflags & FLAG_l) {
  71    sig_to_num(NULL);
  72    return;
  73  }
  74
  75  if (TT.s || (*TT.names && **TT.names == '-')) {
  76    if (0 > (TT.signum = sig_to_num(TT.s ? TT.s : (*TT.names)+1))) {
  77      if (toys.optflags & FLAG_q) exit(1);
  78      error_exit("Invalid signal");
  79    }
  80    if (!TT.s) {
  81      TT.names++;
  82      toys.optc--;
  83    }
  84  }
  85
  86  if (!(toys.optflags & FLAG_l) && !toys.optc) help_exit("no name");
  87
  88  TT.cur_pid = getpid();
  89
  90  TT.err = xmalloc(2*toys.optc);
  91  for (i=0; i<toys.optc; i++) TT.err[i] = ESRCH;
  92  names_to_pid(TT.names, kill_process);
  93  for (i=0; i<toys.optc; i++) {
  94    if (TT.err[i]) {
  95      toys.exitval = 1;
  96      errno = TT.err[i];
  97      perror_msg_raw(TT.names[i]);
  98    }
  99  }
 100  if (CFG_TOYBOX_FREE) free(TT.err);
 101}
 102