#include "busybox.h"
+int kill_main(int argc, char **argv);
int kill_main(int argc, char **argv)
{
- int killall, signo = SIGTERM, errors = 0, quiet=0;
-
- killall = (ENABLE_KILLALL && bb_applet_name[4]=='a') ? 1 : 0;
+ char *arg;
+ pid_t pid;
+ int signo = SIGTERM, errors = 0, quiet = 0;
+ const int killall = (ENABLE_KILLALL && applet_name[4] == 'a'
+ && (!ENABLE_KILLALL5 || applet_name[7] != '5'));
+ const int killall5 = (ENABLE_KILLALL5 && applet_name[4] == 'a'
+ && (!ENABLE_KILLALL || applet_name[7] == '5'));
/* Parse any options */
- if (argc < 2)
- bb_show_usage();
+ argc--;
+ arg = *++argv;
- if(argv[1][0] != '-'){
- argv++;
- argc--;
+ if (argc < 1 || arg[0] != '-') {
goto do_it_now;
}
/* The -l option, which prints out signal names. */
- if(argv[1][1]=='l' && argv[1][2]=='\0'){
- if(argc==2) {
+ if (arg[1] == 'l' && arg[2] == '\0') {
+ const char *name;
+ if (argc == 1) {
/* Print the whole signal list */
int col = 0;
-
- for(signo = 0;;) {
- char *name = get_signame(++signo);
- if (isdigit(*name)) break;
-
- if (col > 60) {
- printf("\n");
+ for (signo = 1; signo < 32; signo++) {
+ name = get_signame(signo);
+ if (isdigit(name[0])) continue;
+ if (col > 66) {
+ puts("");
col = 0;
}
- col += printf("%2d) %-16s", signo, name);
+ col += printf("%2d) %-6s", signo, name);
}
- printf("\n");
- } else {
- for(argv++; *argv; argv++) {
- char *name;
-
- if (isdigit(**argv)) name = get_signame(atoi(*argv));
- else {
- int temp = get_signum(*argv);
- if (temp<0)
- bb_error_msg_and_die("unknown signal %s", *argv);
- name = get_signame(temp);
+ puts("");
+ } else { /* -l <sig list> */
+ while ((arg = *++argv)) {
+ if (isdigit(arg[0])) {
+ signo = xatoi_u(arg);
+ name = get_signame(signo);
+ } else {
+ signo = get_signum(arg);
+ if (signo < 0)
+ bb_error_msg_and_die("unknown signal '%s'", arg);
+ name = get_signame(signo);
}
- puts(name);
+ printf("%2d) %s\n", signo, name);
}
}
- /* If they specified -l, were all done */
+ /* If they specified -l, we are all done */
return EXIT_SUCCESS;
}
/* The -q quiet option */
- if(killall && argv[1][1]=='q' && argv[1][2]=='\0'){
- quiet++;
- argv++;
+ if (killall && arg[1] == 'q' && arg[2] == '\0') {
+ quiet = 1;
+ arg = *++argv;
argc--;
- if(argc<2 || argv[1][0] != '-'){
- goto do_it_now;
- }
+ if (argc < 1) bb_show_usage();
+ if (arg[0] != '-') goto do_it_now;
}
- if(0>(signo = get_signum(argv[1]+1)))
- bb_error_msg_and_die( "bad signal name '%s'", argv[1]+1);
- argv+=2;
- argc-=2;
+ /* -SIG */
+ signo = get_signum(&arg[1]);
+ if (signo < 0)
+ bb_error_msg_and_die("bad signal name '%s'", &arg[1]);
+ arg = *++argv;
+ argc--;
do_it_now:
- /* Pid or name required */
- if (argc <= 0)
- bb_show_usage();
-
- if (!killall) {
- /* Looks like they want to do a kill. Do that */
- while (--argc >= 0) {
- int pid;
-
- if (!isdigit(**argv) && **argv != '-')
- bb_error_msg_and_die( "Bad PID '%s'", *argv);
- pid = strtol(*argv, NULL, 0);
- if (kill(pid, signo) != 0) {
- bb_perror_msg( "Could not kill pid '%d'", pid);
- errors++;
- }
- argv++;
+ if (killall5) {
+ pid_t sid;
+ procps_status_t* p = NULL;
+
+// Cannot happen anyway? We don't TERM ourself, we STOP
+// /* kill(-1, sig) on Linux (at least 2.1.x)
+// * might send signal to the calling process too */
+// signal(SIGTERM, SIG_IGN);
+ /* Now stop all processes */
+ kill(-1, SIGSTOP);
+ /* Find out our own session id */
+ pid = getpid();
+ sid = getsid(pid);
+ /* Now kill all processes except our session */
+ while ((p = procps_scan(p, PSSCAN_PID|PSSCAN_SID))) {
+ if (p->sid != sid && p->pid != pid && p->pid != 1)
+ kill(p->pid, signo);
}
+ /* And let them continue */
+ kill(-1, SIGCONT);
+ return 0;
+ }
- } else {
- pid_t myPid=getpid();
+ /* Pid or name required for kill/killall */
+ if (argc < 1)
+ bb_show_usage();
+ if (killall) {
/* Looks like they want to do a killall. Do that */
- while (--argc >= 0) {
- long* pidList;
+ pid = getpid();
+ while (arg) {
+ pid_t* pidList;
- pidList = find_pid_by_name(*argv);
- if (!pidList || *pidList<=0) {
+ pidList = find_pid_by_name(arg);
+ if (*pidList == 0) {
errors++;
- if (quiet==0)
- bb_error_msg( "%s: no process killed", *argv);
+ if (!quiet)
+ bb_error_msg("%s: no process killed", arg);
} else {
- long *pl;
+ pid_t *pl;
- for(pl = pidList; *pl !=0 ; pl++) {
- if (*pl==myPid)
+ for (pl = pidList; *pl; pl++) {
+ if (*pl == pid)
+ continue;
+ if (kill(*pl, signo) == 0)
continue;
- if (kill(*pl, signo) != 0) {
- errors++;
- if (quiet==0)
- bb_perror_msg( "Could not kill pid '%ld'", *pl);
- }
+ errors++;
+ if (!quiet)
+ bb_perror_msg("cannot kill pid %u", (unsigned)*pl);
}
}
free(pidList);
- argv++;
+ arg = *++argv;
}
+ return errors;
}
+ /* Looks like they want to do a kill. Do that */
+ while (arg) {
+ /* Huh?
+ if (!isdigit(arg[0]) && arg[0] != '-')
+ bb_error_msg_and_die("bad pid '%s'", arg);
+ */
+ pid = xatou(arg);
+ /* FIXME: better overflow check? */
+ if (kill(pid, signo) != 0) {
+ bb_perror_msg("cannot kill pid %u", (unsigned)pid);
+ errors++;
+ }
+ arg = *++argv;
+ }
return errors;
}
projects / oweals / busybox.git / blobdiff