[821] | 1 | /* vi: set sw=4 ts=4: */
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| 2 | /*
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| 3 | * Mini kill/killall implementation for busybox
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| 4 | *
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| 5 | * Copyright (C) 1995, 1996 by Bruce Perens <bruce@pixar.com>.
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| 6 | * Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org>
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| 7 | *
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| 8 | * Licensed under the GPL v2 or later, see the file LICENSE in this tarball.
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| 9 | */
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| 10 |
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| 11 | #include "busybox.h"
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| 12 | #include <stdio.h>
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| 13 | #include <stdlib.h>
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| 14 | #include <errno.h>
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| 15 | #include <unistd.h>
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| 16 | #include <signal.h>
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| 17 | #include <ctype.h>
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| 18 | #include <string.h>
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| 19 | #include <unistd.h>
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| 20 |
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| 21 | #define KILL 0
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| 22 | #define KILLALL 1
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| 23 |
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| 24 | int kill_main(int argc, char **argv)
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| 25 | {
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| 26 | int whichApp, signo = SIGTERM;
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| 27 | const char *name;
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| 28 | int errors = 0;
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| 29 |
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| 30 | #ifdef CONFIG_KILLALL
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| 31 | int quiet=0;
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| 32 | /* Figure out what we are trying to do here */
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| 33 | whichApp = (strcmp(bb_applet_name, "killall") == 0)? KILLALL : KILL;
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| 34 | #else
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| 35 | whichApp = KILL;
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| 36 | #endif
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| 37 |
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| 38 | /* Parse any options */
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| 39 | if (argc < 2)
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| 40 | bb_show_usage();
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| 41 |
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| 42 | if(argv[1][0] != '-'){
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| 43 | argv++;
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| 44 | argc--;
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| 45 | goto do_it_now;
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| 46 | }
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| 47 |
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| 48 | /* The -l option, which prints out signal names. */
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| 49 | if(argv[1][1]=='l' && argv[1][2]=='\0'){
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| 50 | if(argc==2) {
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| 51 | /* Print the whole signal list */
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| 52 | int col = 0;
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| 53 | for(signo=1; signo < NSIG; signo++) {
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| 54 | name = u_signal_names(0, &signo, 1);
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| 55 | if(name==NULL) /* unnamed */
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| 56 | continue;
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| 57 | col += printf("%2d) %-16s", signo, name);
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| 58 | if (col > 60) {
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| 59 | printf("\n");
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| 60 | col = 0;
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| 61 | }
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| 62 | }
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| 63 | printf("\n");
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| 64 |
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| 65 | } else {
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| 66 | for(argv++; *argv; argv++) {
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| 67 | name = u_signal_names(*argv, &signo, -1);
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| 68 | if(name!=NULL)
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| 69 | printf("%s\n", name);
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| 70 | }
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| 71 | }
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| 72 | /* If they specified -l, were all done */
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| 73 | return EXIT_SUCCESS;
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| 74 | }
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| 75 |
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| 76 | #ifdef CONFIG_KILLALL
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| 77 | /* The -q quiet option */
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| 78 | if(whichApp != KILL && argv[1][1]=='q' && argv[1][2]=='\0'){
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| 79 | quiet++;
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| 80 | argv++;
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| 81 | argc--;
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| 82 | if(argc<2 || argv[1][0] != '-'){
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| 83 | goto do_it_now;
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| 84 | }
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| 85 | }
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| 86 | #endif
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| 87 |
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| 88 | if(!u_signal_names(argv[1]+1, &signo, 0))
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| 89 | bb_error_msg_and_die( "bad signal name '%s'", argv[1]+1);
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| 90 | argv+=2;
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| 91 | argc-=2;
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| 92 |
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| 93 | do_it_now:
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| 94 |
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| 95 | /* Pid or name required */
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| 96 | if (argc <= 0)
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| 97 | bb_show_usage();
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| 98 |
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| 99 | if (whichApp == KILL) {
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| 100 | /* Looks like they want to do a kill. Do that */
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| 101 | while (--argc >= 0) {
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| 102 | int pid;
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| 103 |
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| 104 | if (!isdigit(**argv) && **argv != '-')
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| 105 | bb_error_msg_and_die( "Bad PID '%s'", *argv);
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| 106 | pid = strtol(*argv, NULL, 0);
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| 107 | if (kill(pid, signo) != 0) {
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| 108 | bb_perror_msg( "Could not kill pid '%d'", pid);
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| 109 | errors++;
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| 110 | }
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| 111 | argv++;
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| 112 | }
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| 113 |
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| 114 | }
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| 115 | #ifdef CONFIG_KILLALL
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| 116 | else {
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| 117 | pid_t myPid=getpid();
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| 118 | /* Looks like they want to do a killall. Do that */
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| 119 | while (--argc >= 0) {
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| 120 | long* pidList;
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| 121 |
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| 122 | pidList = find_pid_by_name(*argv);
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| 123 | if (!pidList || *pidList<=0) {
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| 124 | errors++;
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| 125 | if (quiet==0)
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| 126 | bb_error_msg( "%s: no process killed", *argv);
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| 127 | } else {
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| 128 | long *pl;
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| 129 |
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| 130 | for(pl = pidList; *pl !=0 ; pl++) {
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| 131 | if (*pl==myPid)
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| 132 | continue;
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| 133 | if (kill(*pl, signo) != 0) {
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| 134 | errors++;
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| 135 | if (quiet==0)
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| 136 | bb_perror_msg( "Could not kill pid '%ld'", *pl);
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| 137 | }
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| 138 | }
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| 139 | }
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| 140 | free(pidList);
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| 141 | argv++;
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| 142 | }
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| 143 | }
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| 144 | #endif
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| 145 | return errors;
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| 146 | }
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