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 *sig;
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    snprintf(toybuf, sizeof(toybuf), "Signal %s(%d) ?", name, (int)pid);
44    if (!yesno(toybuf, 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.sig || (*TT.names && **TT.names == '-')) {
76    if (0 > (TT.signum = sig_to_num(TT.sig ? TT.sig : (*TT.names)+1))) {
77      if (toys.optflags & FLAG_q) exit(1);
78      error_exit("Invalid signal");
79    }
80    if (!TT.sig) {
81      TT.names++;
82      toys.optc--;
83    }
84  }
85
86  if (!(toys.optflags & FLAG_l) && !toys.optc) {
87    toys.exithelp++;
88    error_exit("no name");
89  }
90
91  TT.cur_pid = getpid();
92
93  TT.err = xmalloc(2*toys.optc);
94  for (i=0; i<toys.optc; i++) TT.err[i] = ESRCH;
95  names_to_pid(TT.names, kill_process);
96  for (i=0; i<toys.optc; i++) {
97    if (TT.err[i]) {
98      toys.exitval = 1;
99      errno = TT.err[i];
100      perror_msg("%s", TT.names[i]);
101    }
102  }
103  if (CFG_TOYBOX_FREE) free(TT.err);
104}
105