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92 lines
2.2 KiB
C
92 lines
2.2 KiB
C
/* vi: set sw=4 ts=4: */
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/*
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* pidof implementation for busybox
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*
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* Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org>
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*
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* Licensed under the GPL version 2, see the file LICENSE in this tarball.
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*/
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#include "busybox.h"
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enum {
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USE_FEATURE_PIDOF_SINGLE(OPTBIT_SINGLE,)
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USE_FEATURE_PIDOF_OMIT( OPTBIT_OMIT ,)
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OPT_SINGLE = USE_FEATURE_PIDOF_SINGLE((1<<OPTBIT_SINGLE)) + 0,
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OPT_OMIT = USE_FEATURE_PIDOF_OMIT( (1<<OPTBIT_OMIT )) + 0,
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};
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int pidof_main(int argc, char **argv);
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int pidof_main(int argc, char **argv)
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{
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unsigned first = 1;
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unsigned fail = 1;
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unsigned opt;
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#if ENABLE_FEATURE_PIDOF_OMIT
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llist_t *omits = NULL; /* list of pids to omit */
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opt_complementary = "o::";
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#endif
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/* do unconditional option parsing */
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opt = getopt32(argc, argv, ""
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USE_FEATURE_PIDOF_SINGLE ("s")
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USE_FEATURE_PIDOF_OMIT("o:", &omits));
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#if ENABLE_FEATURE_PIDOF_OMIT
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/* fill omit list. */
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{
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char getppid_str[sizeof(int)*3 + 1];
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llist_t * omits_p = omits;
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while (omits_p) {
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/* are we asked to exclude the parent's process ID? */
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if (!strncmp(omits_p->data, "%PPID", 5)) {
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llist_pop(&omits_p);
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snprintf(getppid_str, sizeof(getppid_str), "%u", (unsigned)getppid());
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llist_add_to(&omits_p, getppid_str);
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}
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omits_p = omits_p->link;
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}
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}
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#endif
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/* Looks like everything is set to go. */
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while (optind < argc) {
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pid_t *pidList;
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pid_t *pl;
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/* reverse the pidlist like GNU pidof does. */
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pidList = pidlist_reverse(find_pid_by_name(argv[optind]));
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for (pl = pidList; *pl; pl++) {
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SKIP_FEATURE_PIDOF_OMIT(const) unsigned omitted = 0;
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#if ENABLE_FEATURE_PIDOF_OMIT
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if (opt & OPT_OMIT) {
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llist_t *omits_p = omits;
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while (omits_p) {
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if (xatoul(omits_p->data) == *pl) {
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omitted = 1;
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break;
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} else
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omits_p = omits_p->link;
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}
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}
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#endif
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if (!omitted) {
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printf(" %u" + first, (unsigned)*pl);
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first = 0;
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}
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fail = (!ENABLE_FEATURE_PIDOF_OMIT && omitted);
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if (ENABLE_FEATURE_PIDOF_SINGLE && (opt & OPT_SINGLE))
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break;
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}
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free(pidList);
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optind++;
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}
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putchar('\n');
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#if ENABLE_FEATURE_PIDOF_OMIT
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if (ENABLE_FEATURE_CLEAN_UP)
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llist_free(omits, NULL);
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#endif
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return fail ? EXIT_FAILURE : EXIT_SUCCESS;
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}
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