/* vi: set sw=4 ts=4: */ /* * pidof implementation for busybox * * Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org> * * Licensed under GPLv2, see file LICENSE in this source tree. */ //usage:#if (ENABLE_FEATURE_PIDOF_SINGLE || ENABLE_FEATURE_PIDOF_OMIT) //usage:#define pidof_trivial_usage //usage: "[OPTIONS] [NAME]..." //usage:#define USAGE_PIDOF "\n" //usage:#else //usage:#define pidof_trivial_usage //usage: "[NAME]..." //usage:#define USAGE_PIDOF /* none */ //usage:#endif //usage:#define pidof_full_usage "\n\n" //usage: "List PIDs of all processes with names that match NAMEs" //usage: USAGE_PIDOF //usage: IF_FEATURE_PIDOF_SINGLE( //usage: "\n -s Show only one PID" //usage: ) //usage: IF_FEATURE_PIDOF_OMIT( //usage: "\n -o PID Omit given pid" //usage: "\n Use %PPID to omit pid of pidof's parent" //usage: ) //usage: //usage:#define pidof_example_usage //usage: "$ pidof init\n" //usage: "1\n" //usage: IF_FEATURE_PIDOF_OMIT( //usage: "$ pidof /bin/sh\n20351 5973 5950\n") //usage: IF_FEATURE_PIDOF_OMIT( //usage: "$ pidof /bin/sh -o %PPID\n20351 5950") #include "libbb.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, }; 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 llist_t *omits = NULL; /* list of pids to omit */ opt_complementary = "o::"; #endif /* 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. */ { 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()); } } #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 */ }