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-rw-r--r--kill.c299
1 files changed, 150 insertions, 149 deletions
diff --git a/kill.c b/kill.c
index e72b73493..516621232 100644
--- a/kill.c
+++ b/kill.c
@@ -1,3 +1,4 @@
1/* vi: set sw=4 ts=4: */
1/* 2/*
2 * Mini kill implementation for busybox 3 * Mini kill implementation for busybox
3 * 4 *
@@ -29,188 +30,188 @@
29#include <sys/stat.h> 30#include <sys/stat.h>
30#include <unistd.h> 31#include <unistd.h>
31 32
32static const char* kill_usage = "kill [-signal] process-id [process-id ...]\n\n" 33static const char *kill_usage =
33"Send a signal (default is SIGTERM) to the specified process(es).\n\n" 34 "kill [-signal] process-id [process-id ...]\n\n"
34"Options:\n" 35 "Send a signal (default is SIGTERM) to the specified process(es).\n\n"
35"\t-l\tList all signal names and numbers.\n\n"; 36 "Options:\n" "\t-l\tList all signal names and numbers.\n\n";
36 37
37 38
38struct signal_name { 39struct signal_name {
39 const char *name; 40 const char *name;
40 int number; 41 int number;
41}; 42};
42 43
43const struct signal_name signames[] = { 44const struct signal_name signames[] = {
44 {"HUP", SIGHUP}, 45 {"HUP", SIGHUP},
45 {"INT", SIGINT}, 46 {"INT", SIGINT},
46 {"QUIT", SIGQUIT}, 47 {"QUIT", SIGQUIT},
47 {"ILL", SIGILL}, 48 {"ILL", SIGILL},
48 {"TRAP", SIGTRAP}, 49 {"TRAP", SIGTRAP},
49 {"ABRT", SIGABRT}, 50 {"ABRT", SIGABRT},
50#ifndef __alpha__ 51#ifndef __alpha__
51 {"IOT", SIGIOT}, 52 {"IOT", SIGIOT},
52#endif 53#endif
53#if defined(__sparc__) || defined(__alpha__) 54#if defined(__sparc__) || defined(__alpha__)
54 {"EMT", SIGEMT}, 55 {"EMT", SIGEMT},
55#else 56#else
56 {"BUS", SIGBUS}, 57 {"BUS", SIGBUS},
57#endif 58#endif
58 {"FPE", SIGFPE}, 59 {"FPE", SIGFPE},
59 {"KILL", SIGKILL}, 60 {"KILL", SIGKILL},
60#if defined(__sparc__) || defined(__alpha__) 61#if defined(__sparc__) || defined(__alpha__)
61 {"BUS", SIGBUS}, 62 {"BUS", SIGBUS},
62#else 63#else
63 {"USR1", SIGUSR1}, 64 {"USR1", SIGUSR1},
64#endif 65#endif
65 {"SEGV", SIGSEGV}, 66 {"SEGV", SIGSEGV},
66#if defined(__sparc__) || defined(__alpha__) 67#if defined(__sparc__) || defined(__alpha__)
67 {"SYS", SIGSYS}, 68 {"SYS", SIGSYS},
68#else 69#else
69 {"USR2", SIGUSR2}, 70 {"USR2", SIGUSR2},
70#endif 71#endif
71 {"PIPE", SIGPIPE}, 72 {"PIPE", SIGPIPE},
72 {"ALRM", SIGALRM}, 73 {"ALRM", SIGALRM},
73 {"TERM", SIGTERM}, 74 {"TERM", SIGTERM},
74#if defined(__sparc__) || defined(__alpha__) 75#if defined(__sparc__) || defined(__alpha__)
75 {"URG", SIGURG}, 76 {"URG", SIGURG},
76 {"STOP", SIGSTOP}, 77 {"STOP", SIGSTOP},
77 {"TSTP", SIGTSTP}, 78 {"TSTP", SIGTSTP},
78 {"CONT", SIGCONT}, 79 {"CONT", SIGCONT},
79 {"CHLD", SIGCHLD}, 80 {"CHLD", SIGCHLD},
80 {"TTIN", SIGTTIN}, 81 {"TTIN", SIGTTIN},
81 {"TTOU", SIGTTOU}, 82 {"TTOU", SIGTTOU},
82 {"IO", SIGIO}, 83 {"IO", SIGIO},
83# ifndef __alpha__ 84# ifndef __alpha__
84 {"POLL", SIGIO}, 85 {"POLL", SIGIO},
85# endif 86# endif
86 {"XCPU", SIGXCPU}, 87 {"XCPU", SIGXCPU},
87 {"XFSZ", SIGXFSZ}, 88 {"XFSZ", SIGXFSZ},
88 {"VTALRM", SIGVTALRM}, 89 {"VTALRM", SIGVTALRM},
89 {"PROF", SIGPROF}, 90 {"PROF", SIGPROF},
90 {"WINCH", SIGWINCH}, 91 {"WINCH", SIGWINCH},
91# ifdef __alpha__ 92# ifdef __alpha__
92 {"INFO", SIGINFO}, 93 {"INFO", SIGINFO},
93# else 94# else
94 {"LOST", SIGLOST}, 95 {"LOST", SIGLOST},
95# endif 96# endif
96 {"USR1", SIGUSR1}, 97 {"USR1", SIGUSR1},
97 {"USR2", SIGUSR2}, 98 {"USR2", SIGUSR2},
98#else 99#else
99 {"STKFLT", SIGSTKFLT}, 100 {"STKFLT", SIGSTKFLT},
100 {"CHLD", SIGCHLD}, 101 {"CHLD", SIGCHLD},
101 {"CONT", SIGCONT}, 102 {"CONT", SIGCONT},
102 {"STOP", SIGSTOP}, 103 {"STOP", SIGSTOP},
103 {"TSTP", SIGTSTP}, 104 {"TSTP", SIGTSTP},
104 {"TTIN", SIGTTIN}, 105 {"TTIN", SIGTTIN},
105 {"TTOU", SIGTTOU}, 106 {"TTOU", SIGTTOU},
106 {"URG", SIGURG}, 107 {"URG", SIGURG},
107 {"XCPU", SIGXCPU}, 108 {"XCPU", SIGXCPU},
108 {"XFSZ", SIGXFSZ}, 109 {"XFSZ", SIGXFSZ},
109 {"VTALRM", SIGVTALRM}, 110 {"VTALRM", SIGVTALRM},
110 {"PROF", SIGPROF}, 111 {"PROF", SIGPROF},
111 {"WINCH", SIGWINCH}, 112 {"WINCH", SIGWINCH},
112 {"IO", SIGIO}, 113 {"IO", SIGIO},
113 {"POLL", SIGPOLL}, 114 {"POLL", SIGPOLL},
114 {"PWR", SIGPWR}, 115 {"PWR", SIGPWR},
115 {"UNUSED", SIGUNUSED}, 116 {"UNUSED", SIGUNUSED},
116#endif 117#endif
117 {0, 0} 118 {0, 0}
118}; 119};
119 120
120extern int kill_main (int argc, char **argv) 121extern int kill_main(int argc, char **argv)
121{ 122{
122 int sig = SIGTERM; 123 int sig = SIGTERM;
123 124
124 argc--; 125 argc--;
125 argv++; 126 argv++;
126 /* Parse any options */ 127 /* Parse any options */
127 if (argc < 1) 128 if (argc < 1)
128 usage(kill_usage);
129
130 while (argc > 0 && **argv == '-') {
131 while (*++(*argv)) {
132 switch (**argv) {
133 case 'l':
134 {
135 int col=0;
136 const struct signal_name *s = signames;
137
138 while (s->name != 0) {
139 col+=fprintf(stderr, "%2d) %-8s", s->number, (s++)->name);
140 if (col>60) {
141 fprintf(stderr, "\n");
142 col=0;
143 }
144 }
145 fprintf(stderr, "\n\n");
146 exit( TRUE);
147 }
148 break;
149 case '-':
150 usage(kill_usage); 129 usage(kill_usage);
151 default: 130
152 { 131 while (argc > 0 && **argv == '-') {
153 if (isdigit( **argv)) { 132 while (*++(*argv)) {
154 sig = atoi (*argv); 133 switch (**argv) {
155 if (sig < 0 || sig >= NSIG) 134 case 'l':
156 goto end; 135 {
157 else { 136 int col = 0;
158 argc--; 137 const struct signal_name *s = signames;
159 argv++; 138
160 goto do_it_now; 139 while (s->name != 0) {
161 } 140 col +=
162 } 141 fprintf(stderr, "%2d) %-8s", s->number,
163 else { 142 (s++)->name);
164 const struct signal_name *s = signames; 143 if (col > 60) {
165 while (s->name != 0) { 144 fprintf(stderr, "\n");
166 if (strcasecmp (s->name, *argv) == 0) { 145 col = 0;
167 sig = s->number; 146 }
168 argc--; 147 }
169 argv++; 148 fprintf(stderr, "\n\n");
170 goto do_it_now; 149 exit(TRUE);
171 } 150 }
172 s++; 151 break;
152 case '-':
153 usage(kill_usage);
154 default:
155 {
156 if (isdigit(**argv)) {
157 sig = atoi(*argv);
158 if (sig < 0 || sig >= NSIG)
159 goto end;
160 else {
161 argc--;
162 argv++;
163 goto do_it_now;
164 }
165 } else {
166 const struct signal_name *s = signames;
167
168 while (s->name != 0) {
169 if (strcasecmp(s->name, *argv) == 0) {
170 sig = s->number;
171 argc--;
172 argv++;
173 goto do_it_now;
174 }
175 s++;
176 }
177 if (s->name == 0)
178 goto end;
179 }
180 }
173 } 181 }
174 if (s->name == 0) 182 argc--;
175 goto end; 183 argv++;
176 }
177 } 184 }
178 }
179 argc--;
180 argv++;
181 }
182 }
183
184do_it_now:
185
186 while (--argc >= 0) {
187 int pid;
188 struct stat statbuf;
189 char pidpath[20]="/proc/";
190
191 if (! isdigit( **argv)) {
192 fprintf(stderr, "bad PID: %s\n", *argv);
193 exit( FALSE);
194 }
195 pid = atoi (*argv);
196 snprintf(pidpath, 20, "/proc/%s/stat", *argv);
197 if (stat( pidpath, &statbuf)!=0) {
198 fprintf(stderr, "kill: (%d) - No such pid\n", pid);
199 exit( FALSE);
200 } 185 }
201 fprintf(stderr, "sig = %d\n", sig);
202 if (kill (pid, sig) != 0) {
203 perror (*argv);
204 exit ( FALSE);
205 }
206 argv++;
207 }
208 exit ( TRUE);
209 186
187 do_it_now:
210 188
211end: 189 while (--argc >= 0) {
212 fprintf(stderr, "bad signal name: %s\n", *argv); 190 int pid;
213 exit (TRUE); 191 struct stat statbuf;
214} 192 char pidpath[20] = "/proc/";
193
194 if (!isdigit(**argv)) {
195 fprintf(stderr, "bad PID: %s\n", *argv);
196 exit(FALSE);
197 }
198 pid = atoi(*argv);
199 snprintf(pidpath, 20, "/proc/%s/stat", *argv);
200 if (stat(pidpath, &statbuf) != 0) {
201 fprintf(stderr, "kill: (%d) - No such pid\n", pid);
202 exit(FALSE);
203 }
204 fprintf(stderr, "sig = %d\n", sig);
205 if (kill(pid, sig) != 0) {
206 perror(*argv);
207 exit(FALSE);
208 }
209 argv++;
210 }
211 exit(TRUE);
215 212
216 213
214 end:
215 fprintf(stderr, "bad signal name: %s\n", *argv);
216 exit(TRUE);
217}
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