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annotate toys/posix/kill.c @ 674:7e846e281e38

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New build infrastructure to generate FLAG_ macros and TT alias, #define FOR_commandname before #including toys.h to trigger it. Rename DEFINE_GLOBALS() to just GLOBALS() (because I could never remember if it was DECLARE_GLOBALS). Convert existing commands to use new infrastructure, and replace optflag constants with FLAG_ macros where appropriate.
author Rob Landley <rob@landley.net>
date Mon, 08 Oct 2012 00:02:30 -0500
parents 2986aa63a021
children 786841fdb1e0
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1 /* vi: set sw=4 ts=4:
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2 *
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3 * kill.c - a program to send signals to processes
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4 *
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5 * Copyright 2012 Daniel Walter <d.walter@0x90.at>
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6 *
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7 * See http://opengroup.org/onlinepubs/9699919799/utilities/kill.html
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8
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bc4615e2e339 Teach lib/args.c that " " this option must take a _separate_ argument, so "kill -stop" and "kill -s top" aren't the same thing. Make kill.c use it, and remove leftover debug printfs.
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9 USE_KILL(NEWTOY(kill, "?s: l", TOYFLAG_BIN))
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10
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11 config KILL
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12 bool "kill"
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13 default y
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14 help
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15 usage: kill [-l [SIGNAL] | -s SIGNAL | -SIGNAL] pid...
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16
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17 Send a signal to a process
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18
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19 */
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20
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21 #define FOR_kill
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22 #include "toys.h"
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23
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24 GLOBALS(
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25 char *signame;
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26 )
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27
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28 void kill_main(void)
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29 {
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30 int signum;
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31 char *tmp, **args = toys.optargs;
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32 pid_t pid;
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33
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34 // list signal(s)
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35 if (toys.optflags & FLAG_l) {
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36 if (*args) {
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37 int signum = sig_to_num(*args);
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38 char *s = NULL;
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39
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40 if (signum>=0) s = num_to_sig(signum&127);
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41 puts(s ? s : "UNKNOWN");
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42 } else sig_to_num(NULL);
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43 return;
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44 }
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46 // signal must come before pids, so "kill -9 -1" isn't confusing.
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47
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48 if (!TT.signame && *args && **args=='-') TT.signame=*(args++)+1;
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49 if (TT.signame) {
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50 char *arg;
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51 int i = strtol(TT.signame, &arg, 10);
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52 if (!*arg) arg = num_to_sig(i);
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53 else arg = TT.signame;
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54
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55 if (!arg || -1 == (signum = sig_to_num(arg)))
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56 error_exit("Unknown signal '%s'", arg);
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57 } else signum = SIGTERM;
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58
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59 if (!*args) {
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60 toys.exithelp++;
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61 error_exit("missing argument");
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62 }
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63
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64 while (*args) {
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65 char *arg = *(args++);
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67 pid = strtol(arg, &tmp, 10);
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68 if (*tmp || kill(pid, signum) < 0) {
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69 error_msg("unknown pid '%s'", arg);
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70 toys.exitval = EXIT_FAILURE;
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71 }
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72 }
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73 }