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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