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/* vi: set sw=4 ts=4: */
/*
* pidof implementation for busybox
*
* Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org>
*
* Licensed under the GPL version 2, see the file LICENSE in this tarball.
*/
#include "libbb.h"
enum {
USE_FEATURE_PIDOF_SINGLE(OPTBIT_SINGLE,)
USE_FEATURE_PIDOF_OMIT( OPTBIT_OMIT ,)
OPT_SINGLE = USE_FEATURE_PIDOF_SINGLE((1<<OPTBIT_SINGLE)) + 0,
OPT_OMIT = USE_FEATURE_PIDOF_OMIT( (1<<OPTBIT_OMIT )) + 0,
};
int pidof_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
int pidof_main(int argc UNUSED_PARAM, char **argv)
{
unsigned first = 1;
unsigned opt;
#if ENABLE_FEATURE_PIDOF_OMIT
char ppid_str[sizeof(int)*3 + 1];
llist_t *omits = NULL; /* list of pids to omit */
opt_complementary = "o::";
#endif
/* do unconditional option parsing */
opt = getopt32(argv, ""
USE_FEATURE_PIDOF_SINGLE ("s")
USE_FEATURE_PIDOF_OMIT("o:", &omits));
#if ENABLE_FEATURE_PIDOF_OMIT
/* fill omit list. */
{
llist_t *omits_p = omits;
while (omits_p) {
/* are we asked to exclude the parent's process ID? */
if (strcmp(omits_p->data, "%PPID") == 0) {
sprintf(ppid_str, "%u", (unsigned)getppid());
omits_p->data = ppid_str;
}
omits_p = omits_p->link;
}
}
#endif
/* Looks like everything is set to go. */
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));
for (pl = pidList; *pl; pl++) {
#if ENABLE_FEATURE_PIDOF_OMIT
if (opt & OPT_OMIT) {
llist_t *omits_p = omits;
while (omits_p) {
if (xatoul(omits_p->data) == (unsigned long)(*pl)) {
goto omitting;
}
omits_p = omits_p->link;
}
}
#endif
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);
argv++;
}
if (!first)
bb_putchar('\n');
#if ENABLE_FEATURE_PIDOF_OMIT
if (ENABLE_FEATURE_CLEAN_UP)
llist_free(omits, NULL);
#endif
return first; /* 1 (failure) - no processes found */
}
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