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authorDenis Vlasenko <vda.linux@googlemail.com>2006-12-27 04:35:04 +0000
committerDenis Vlasenko <vda.linux@googlemail.com>2006-12-27 04:35:04 +0000
commit8d42f86b146871ae4c4cafd3801a85f381249a14 (patch)
treeb963999fc54eddb65f1929b894f868e24851fc9c /procps/pidof.c
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Correcting branch name to be like previous ones
Diffstat (limited to 'procps/pidof.c')
-rw-r--r--procps/pidof.c90
1 files changed, 90 insertions, 0 deletions
diff --git a/procps/pidof.c b/procps/pidof.c
new file mode 100644
index 000000000..1d9718945
--- /dev/null
+++ b/procps/pidof.c
@@ -0,0 +1,90 @@
1/* vi: set sw=4 ts=4: */
2/*
3 * pidof implementation for busybox
4 *
5 * Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org>
6 *
7 * Licensed under the GPL version 2, see the file LICENSE in this tarball.
8 */
9
10#include "busybox.h"
11
12enum {
13 USE_FEATURE_PIDOF_SINGLE(OPTBIT_SINGLE,)
14 USE_FEATURE_PIDOF_OMIT( OPTBIT_OMIT ,)
15 OPT_SINGLE = USE_FEATURE_PIDOF_SINGLE((1<<OPTBIT_SINGLE)) + 0,
16 OPT_OMIT = USE_FEATURE_PIDOF_OMIT( (1<<OPTBIT_OMIT )) + 0,
17};
18
19int pidof_main(int argc, char **argv)
20{
21 unsigned first = 1;
22 unsigned fail = 1;
23 unsigned opt;
24#if ENABLE_FEATURE_PIDOF_OMIT
25 llist_t *omits = NULL; /* list of pids to omit */
26 opt_complementary = "o::";
27#endif
28
29 /* do unconditional option parsing */
30 opt = getopt32(argc, argv, ""
31 USE_FEATURE_PIDOF_SINGLE ("s")
32 USE_FEATURE_PIDOF_OMIT("o:", &omits));
33
34#if ENABLE_FEATURE_PIDOF_OMIT
35 /* fill omit list. */
36 {
37 char getppid_str[sizeof(int)*3 + 1];
38 llist_t * omits_p = omits;
39 while (omits_p) {
40 /* are we asked to exclude the parent's process ID? */
41 if (!strncmp(omits_p->data, "%PPID", 5)) {
42 llist_pop(&omits_p);
43 snprintf(getppid_str, sizeof(getppid_str), "%u", (unsigned)getppid());
44 llist_add_to(&omits_p, getppid_str);
45 }
46 omits_p = omits_p->link;
47 }
48 }
49#endif
50 /* Looks like everything is set to go. */
51 while (optind < argc) {
52 pid_t *pidList;
53 pid_t *pl;
54
55 /* reverse the pidlist like GNU pidof does. */
56 pidList = pidlist_reverse(find_pid_by_name(argv[optind]));
57 for (pl = pidList; *pl; pl++) {
58 SKIP_FEATURE_PIDOF_OMIT(const) unsigned omitted = 0;
59#if ENABLE_FEATURE_PIDOF_OMIT
60 if (opt & OPT_OMIT) {
61 llist_t *omits_p = omits;
62 while (omits_p) {
63 if (xatoul(omits_p->data) == *pl) {
64 omitted = 1;
65 break;
66 } else
67 omits_p = omits_p->link;
68 }
69 }
70#endif
71 if (!omitted) {
72 printf(" %u" + first, (unsigned)*pl);
73 first = 0;
74 }
75 fail = (!ENABLE_FEATURE_PIDOF_OMIT && omitted);
76
77 if (ENABLE_FEATURE_PIDOF_SINGLE && (opt & OPT_SINGLE))
78 break;
79 }
80 free(pidList);
81 optind++;
82 }
83 putchar('\n');
84
85#if ENABLE_FEATURE_PIDOF_OMIT
86 if (ENABLE_FEATURE_CLEAN_UP)
87 llist_free(omits, NULL);
88#endif
89 return fail ? EXIT_FAILURE : EXIT_SUCCESS;
90}