*
* Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org>
*
- * Licensed under the GPL v2, see the file LICENSE in this tarball.
+ * Licensed under the GPL version 2, see the file LICENSE in this tarball.
*/
+#include "libbb.h"
-#include <stdio.h>
-#include <stdlib.h>
-#include <errno.h>
-#include <unistd.h>
-#include <signal.h>
-#include <ctype.h>
-#include <string.h>
-#include <unistd.h>
-#include "busybox.h"
+enum {
+ IF_FEATURE_PIDOF_SINGLE(OPTBIT_SINGLE,)
+ IF_FEATURE_PIDOF_OMIT( OPTBIT_OMIT ,)
+ OPT_SINGLE = IF_FEATURE_PIDOF_SINGLE((1<<OPTBIT_SINGLE)) + 0,
+ OPT_OMIT = IF_FEATURE_PIDOF_OMIT( (1<<OPTBIT_OMIT )) + 0,
+};
-#if ENABLE_FEATURE_PIDOF_SINGLE
-#define _SINGLE_COMPL(a) a
-#define SINGLE (1<<0)
-#else
-#define _SINGLE_COMPL(a)
-#define SINGLE (0)
-#endif
-
-#if ENABLE_FEATURE_PIDOF_OMIT
-#define _OMIT_COMPL(a) a
-#define _OMIT(a) ,a
-static llist_t *omits; /* list of pids to omit */
-#if ENABLE_FEATURE_PIDOF_SINGLE
-#define OMIT (1<<1)
-#else
-#define OMIT (1<<0)
-#endif
-#else
-#define _OMIT_COMPL(a) ""
-#define _OMIT(a)
-#define OMIT (0)
-#endif
-
-extern int pidof_main(int argc, char **argv)
+int pidof_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
+int pidof_main(int argc UNUSED_PARAM, char **argv)
{
- int n = 0;
- int fail = 1;
- unsigned long int opt;
+ unsigned first = 1;
+ unsigned opt;
#if ENABLE_FEATURE_PIDOF_OMIT
- bb_opt_complementally = _OMIT_COMPL("o*");
+ llist_t *omits = NULL; /* list of pids to omit */
+ opt_complementary = "o::";
#endif
- /* do option parsing */
- if ((opt = bb_getopt_ulflags(argc, argv,
- _SINGLE_COMPL("s") _OMIT_COMPL("o:")
- _OMIT(&omits)))
- > 0) {
-#if ENABLE_FEATURE_PIDOF_SINGLE
- if (!(opt & SINGLE))
-#endif
-#if ENABLE_FEATURE_PIDOF_OMIT
- if (!(opt & OMIT))
-#endif
- bb_show_usage();
- }
+ /* do unconditional option parsing */
+ opt = getopt32(argv, ""
+ IF_FEATURE_PIDOF_SINGLE ("s")
+ IF_FEATURE_PIDOF_OMIT("o:", &omits));
#if ENABLE_FEATURE_PIDOF_OMIT
/* fill omit list. */
{
- RESERVE_CONFIG_BUFFER(getppid_str, 32);
- llist_t * omits_p = omits;
- while (omits_p) {
- /* are we asked to exclude the parent's process ID? */
- if (omits_p->data[0] == '%') {
- if (!strncmp(omits_p->data, "%PPID", 5)) {
- /* yes, exclude ppid */
- snprintf(getppid_str, sizeof(getppid_str), "%ld", getppid());
-// omits_p->data = getppid_str;
-#if 0
- } else {
- bb_error_msg_and_die("illegal omit pid value (%s)!\n",
- omits_p->data);
-#endif
- }
- } else {
- /* no, not talking about ppid but deal with usual case (pid). */
- snprintf(getppid_str, sizeof(getppid_str), "%ld",
- strtol(omits_p->data, NULL, 10));
+ llist_t *omits_p = omits;
+ while (1) {
+ omits_p = llist_find_str(omits_p, "%PPID");
+ if (!omits_p)
+ break;
+ /* are we asked to exclude the parent's process ID? */
+ omits_p->data = utoa((unsigned)getppid());
}
- omits_p->data = getppid_str;
- omits_p = omits_p->link;
- }
- RELEASE_CONFIG_BUFFER(getppid_str);
}
#endif
/* Looks like everything is set to go. */
- while(optind < argc) {
- long *pidList;
- long *pl;
+ argv += optind;
+ while (*argv) {
+ pid_t *pidList;
+ pid_t *pl;
/* reverse the pidlist like GNU pidof does. */
- pidList = pidlist_reverse(find_pid_by_name(argv[optind]));
- for(pl = pidList; *pl > 0; pl++) {
+ pidList = pidlist_reverse(find_pid_by_name(*argv));
+ for (pl = pidList; *pl; pl++) {
#if ENABLE_FEATURE_PIDOF_OMIT
- unsigned short omitted = 0;
- if (opt & OMIT) {
+ if (opt & OPT_OMIT) {
llist_t *omits_p = omits;
- while (omits_p)
- if (strtol(omits_p->data, NULL, 10) == *pl) {
- omitted = 1; break;
- } else
- omits_p = omits_p->link;
+ while (omits_p) {
+ if (xatoul(omits_p->data) == (unsigned long)(*pl)) {
+ goto omitting;
+ }
+ omits_p = omits_p->link;
+ }
}
- if (!omitted)
-#endif
- printf("%s%ld", (n++ ? " " : ""), *pl);
-#if ENABLE_FEATURE_PIDOF_OMIT
- fail = omitted;
-#else
- fail = 0;
#endif
-#if ENABLE_FEATURE_PIDOF_SINGLE
- if (opt & SINGLE)
+ printf(" %u" + first, (unsigned)*pl);
+ first = 0;
+ if (ENABLE_FEATURE_PIDOF_SINGLE && (opt & OPT_SINGLE))
break;
+#if ENABLE_FEATURE_PIDOF_OMIT
+ omitting: ;
#endif
}
free(pidList);
- optind++;
+ argv++;
}
- putchar('\n');
+ if (!first)
+ bb_putchar('\n');
#if ENABLE_FEATURE_PIDOF_OMIT
if (ENABLE_FEATURE_CLEAN_UP)
- llist_free(omits);
+ llist_free(omits, NULL);
#endif
- return fail ? EXIT_FAILURE : EXIT_SUCCESS;
+ return first; /* 1 (failure) - no processes found */
}