* Licensed under GPLv2 or later, see file LICENSE in this source tree.
*/
+//usage:#define kill_trivial_usage
+//usage: "[-l] [-SIG] PID..."
+//usage:#define kill_full_usage "\n\n"
+//usage: "Send a signal (default: TERM) to given PIDs\n"
+//usage: "\n -l List all signal names and numbers"
+/* //usage: "\n -s SIG Yet another way of specifying SIG" */
+//usage:
+//usage:#define kill_example_usage
+//usage: "$ ps | grep apache\n"
+//usage: "252 root root S [apache]\n"
+//usage: "263 www-data www-data S [apache]\n"
+//usage: "264 www-data www-data S [apache]\n"
+//usage: "265 www-data www-data S [apache]\n"
+//usage: "266 www-data www-data S [apache]\n"
+//usage: "267 www-data www-data S [apache]\n"
+//usage: "$ kill 252\n"
+//usage:
+//usage:#define killall_trivial_usage
+//usage: "[-l] [-q] [-SIG] PROCESS_NAME..."
+//usage:#define killall_full_usage "\n\n"
+//usage: "Send a signal (default: TERM) to given processes\n"
+//usage: "\n -l List all signal names and numbers"
+/* //usage: "\n -s SIG Yet another way of specifying SIG" */
+//usage: "\n -q Don't complain if no processes were killed"
+//usage:
+//usage:#define killall_example_usage
+//usage: "$ killall apache\n"
+//usage:
+//usage:#define killall5_trivial_usage
+//usage: "[-l] [-SIG] [-o PID]..."
+//usage:#define killall5_full_usage "\n\n"
+//usage: "Send a signal (default: TERM) to all processes outside current session\n"
+//usage: "\n -l List all signal names and numbers"
+//usage: "\n -o PID Don't signal this PID"
+/* //usage: "\n -s SIG Yet another way of specifying SIG" */
+
#include "libbb.h"
/* Note: kill_main is directly called from shell in order to implement
* This is needed to avoid collision with kill -9 ... syntax
*/
-int kill_main(int argc, char **argv)
+int kill_main(int argc UNUSED_PARAM, char **argv)
{
char *arg;
pid_t pid;
#endif
/* Parse any options */
- argc--;
arg = *++argv;
- if (argc < 1 || arg[0] != '-') {
+ if (!arg || arg[0] != '-') {
goto do_it_now;
}
* echo "Died of SIG`kill -l $?`"
* We try to mimic what kill from coreutils-6.8 does */
if (arg[1] == 'l' && arg[2] == '\0') {
- if (argc == 1) {
+ arg = *++argv;
+ if (!arg) {
/* Print the whole signal list */
print_signames();
return 0;
}
/* -l <sig list> */
- while ((arg = *++argv)) {
+ do {
if (isdigit(arg[0])) {
signo = bb_strtou(arg, NULL, 10);
if (errno) {
}
printf("%d\n", signo);
}
- }
- /* If they specified -l, we are all done */
+ arg = *++argv;
+ } while (arg);
return EXIT_SUCCESS;
}
if (killall && arg[1] == 'q' && arg[2] == '\0') {
quiet = 1;
arg = *++argv;
- argc--;
- if (argc < 1)
+ if (!arg)
bb_show_usage();
if (arg[0] != '-')
goto do_it_now;
if (killall5 && arg[0] == 'o')
goto do_it_now;
- if (argc > 1 && arg[0] == 's' && arg[1] == '\0') { /* -s SIG? */
- argc--;
+ if (argv[1] && arg[0] == 's' && arg[1] == '\0') { /* -s SIG? */
arg = *++argv;
} /* else it must be -SIG */
signo = get_signum(arg);
return EXIT_FAILURE;
}
arg = *++argv;
- argc--;
do_it_now:
pid = getpid();
if (killall5) {
pid_t sid;
procps_status_t* p = NULL;
- int ret = 0;
+ /* compat: exitcode 2 is "no one was signaled" */
+ int ret = 2;
/* Find out our session id */
sid = getsid(pid);
/* Stop all processes */
- kill(-1, SIGSTOP);
+ if (signo != SIGSTOP && signo != SIGCONT)
+ kill(-1, SIGSTOP);
/* Signal all processes except those in our session */
- while ((p = procps_scan(p, PSSCAN_PID|PSSCAN_SID))) {
- int i;
+ while ((p = procps_scan(p, PSSCAN_PID|PSSCAN_SID)) != NULL) {
+ char **args;
if (p->sid == (unsigned)sid
+ || p->sid == 0 /* compat: kernel thread, don't signal it */
|| p->pid == (unsigned)pid
- || p->pid == 1)
+ || p->pid == 1
+ ) {
continue;
+ }
/* All remaining args must be -o PID options.
* Check p->pid against them. */
- for (i = 0; i < argc; i++) {
+ args = argv;
+ while (*args) {
pid_t omit;
- arg = argv[i];
+ arg = *args++;
if (arg[0] != '-' || arg[1] != 'o') {
bb_error_msg("bad option '%s'", arg);
ret = 1;
goto resume;
}
arg += 2;
- if (!arg[0] && argv[++i])
- arg = argv[i];
+ if (!arg[0] && *args)
+ arg = *args++;
omit = bb_strtoi(arg, NULL, 10);
if (errno) {
bb_error_msg("invalid number '%s'", arg);
goto dont_kill;
}
kill(p->pid, signo);
+ ret = 0;
dont_kill: ;
}
resume:
/* And let them continue */
- kill(-1, SIGCONT);
+ if (signo != SIGSTOP && signo != SIGCONT)
+ kill(-1, SIGCONT);
return ret;
}
/* Pid or name is required for kill/killall */
- if (argc < 1) {
+ if (!arg) {
bb_error_msg("you need to specify whom to kill");
return EXIT_FAILURE;
}
if (killall) {
/* Looks like they want to do a killall. Do that */
- while (arg) {
+ do {
pid_t* pidList;
pidList = find_pid_by_name(arg);
}
free(pidList);
arg = *++argv;
- }
+ } while (arg);
return errors;
}
/* Looks like they want to do a kill. Do that */
while (arg) {
- /* Support shell 'space' trick */
- if (arg[0] == ' ')
- arg++;
+#if ENABLE_ASH || ENABLE_HUSH
+ /*
+ * We need to support shell's "hack formats" of
+ * " -PRGP_ID" (yes, with a leading space)
+ * and " PID1 PID2 PID3" (with degenerate case "")
+ */
+ while (*arg != '\0') {
+ char *end;
+ if (*arg == ' ')
+ arg++;
+ pid = bb_strtoi(arg, &end, 10);
+ if (errno && (errno != EINVAL || *end != ' ')) {
+ bb_error_msg("invalid number '%s'", arg);
+ errors++;
+ break;
+ }
+ if (kill(pid, signo) != 0) {
+ bb_perror_msg("can't kill pid %d", (int)pid);
+ errors++;
+ }
+ arg = end; /* can only point to ' ' or '\0' now */
+ }
+#else
pid = bb_strtoi(arg, NULL, 10);
if (errno) {
bb_error_msg("invalid number '%s'", arg);
bb_perror_msg("can't kill pid %d", (int)pid);
errors++;
}
+#endif
arg = *++argv;
}
return errors;
projects / platform / upstream / busybox.git / blobdiff