diff options
Diffstat (limited to 'procps/pidof.c')
-rw-r--r-- | procps/pidof.c | 90 |
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 @@ +/* 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 "busybox.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) +{ + unsigned first = 1; + unsigned fail = 1; + unsigned opt; +#if ENABLE_FEATURE_PIDOF_OMIT + llist_t *omits = NULL; /* list of pids to omit */ + opt_complementary = "o::"; +#endif + + /* do unconditional option parsing */ + opt = getopt32(argc, argv, "" + USE_FEATURE_PIDOF_SINGLE ("s") + USE_FEATURE_PIDOF_OMIT("o:", &omits)); + +#if ENABLE_FEATURE_PIDOF_OMIT + /* fill omit list. */ + { + char getppid_str[sizeof(int)*3 + 1]; + llist_t * omits_p = omits; + while (omits_p) { + /* are we asked to exclude the parent's process ID? */ + if (!strncmp(omits_p->data, "%PPID", 5)) { + llist_pop(&omits_p); + snprintf(getppid_str, sizeof(getppid_str), "%u", (unsigned)getppid()); + llist_add_to(&omits_p, getppid_str); + } + omits_p = omits_p->link; + } + } +#endif + /* Looks like everything is set to go. */ + while (optind < argc) { + 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; pl++) { + SKIP_FEATURE_PIDOF_OMIT(const) unsigned omitted = 0; +#if ENABLE_FEATURE_PIDOF_OMIT + if (opt & OPT_OMIT) { + llist_t *omits_p = omits; + while (omits_p) { + if (xatoul(omits_p->data) == *pl) { + omitted = 1; + break; + } else + omits_p = omits_p->link; + } + } +#endif + if (!omitted) { + printf(" %u" + first, (unsigned)*pl); + first = 0; + } + fail = (!ENABLE_FEATURE_PIDOF_OMIT && omitted); + + if (ENABLE_FEATURE_PIDOF_SINGLE && (opt & OPT_SINGLE)) + break; + } + free(pidList); + optind++; + } + putchar('\n'); + +#if ENABLE_FEATURE_PIDOF_OMIT + if (ENABLE_FEATURE_CLEAN_UP) + llist_free(omits, NULL); +#endif + return fail ? EXIT_FAILURE : EXIT_SUCCESS; +} |