[821] | 1 | /* vi: set sw=4 ts=4: */
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| 2 | /*
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| 3 | * pidof implementation for busybox
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| 4 | *
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| 5 | * Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org>
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| 6 | *
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[2725] | 7 | * Licensed under GPLv2, see file LICENSE in this source tree.
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[821] | 8 | */
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| 9 |
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[3232] | 10 | //usage:#if (ENABLE_FEATURE_PIDOF_SINGLE || ENABLE_FEATURE_PIDOF_OMIT)
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| 11 | //usage:#define pidof_trivial_usage
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| 12 | //usage: "[OPTIONS] [NAME]..."
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| 13 | //usage:#define USAGE_PIDOF "\n"
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| 14 | //usage:#else
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| 15 | //usage:#define pidof_trivial_usage
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| 16 | //usage: "[NAME]..."
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| 17 | //usage:#define USAGE_PIDOF /* none */
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| 18 | //usage:#endif
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| 19 | //usage:#define pidof_full_usage "\n\n"
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| 20 | //usage: "List PIDs of all processes with names that match NAMEs"
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| 21 | //usage: USAGE_PIDOF
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| 22 | //usage: IF_FEATURE_PIDOF_SINGLE(
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| 23 | //usage: "\n -s Show only one PID"
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| 24 | //usage: )
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| 25 | //usage: IF_FEATURE_PIDOF_OMIT(
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| 26 | //usage: "\n -o PID Omit given pid"
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| 27 | //usage: "\n Use %PPID to omit pid of pidof's parent"
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| 28 | //usage: )
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| 29 | //usage:
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| 30 | //usage:#define pidof_example_usage
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| 31 | //usage: "$ pidof init\n"
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| 32 | //usage: "1\n"
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| 33 | //usage: IF_FEATURE_PIDOF_OMIT(
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| 34 | //usage: "$ pidof /bin/sh\n20351 5973 5950\n")
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| 35 | //usage: IF_FEATURE_PIDOF_OMIT(
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| 36 | //usage: "$ pidof /bin/sh -o %PPID\n20351 5950")
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| 37 |
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[1765] | 38 | #include "libbb.h"
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[821] | 39 |
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[1765] | 40 | enum {
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[2725] | 41 | IF_FEATURE_PIDOF_SINGLE(OPTBIT_SINGLE,)
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| 42 | IF_FEATURE_PIDOF_OMIT( OPTBIT_OMIT ,)
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| 43 | OPT_SINGLE = IF_FEATURE_PIDOF_SINGLE((1<<OPTBIT_SINGLE)) + 0,
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| 44 | OPT_OMIT = IF_FEATURE_PIDOF_OMIT( (1<<OPTBIT_OMIT )) + 0,
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[1765] | 45 | };
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[821] | 46 |
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[2725] | 47 | int pidof_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
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| 48 | int pidof_main(int argc UNUSED_PARAM, char **argv)
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[821] | 49 | {
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[1765] | 50 | unsigned first = 1;
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| 51 | unsigned opt;
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[821] | 52 | #if ENABLE_FEATURE_PIDOF_OMIT
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| 53 | llist_t *omits = NULL; /* list of pids to omit */
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[1765] | 54 | opt_complementary = "o::";
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[821] | 55 | #endif
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| 56 |
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| 57 | /* do unconditional option parsing */
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[1765] | 58 | opt = getopt32(argv, ""
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[2725] | 59 | IF_FEATURE_PIDOF_SINGLE ("s")
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| 60 | IF_FEATURE_PIDOF_OMIT("o:", &omits));
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[821] | 61 |
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| 62 | #if ENABLE_FEATURE_PIDOF_OMIT
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| 63 | /* fill omit list. */
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| 64 | {
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[1765] | 65 | llist_t *omits_p = omits;
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[2725] | 66 | while (1) {
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| 67 | omits_p = llist_find_str(omits_p, "%PPID");
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| 68 | if (!omits_p)
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| 69 | break;
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[821] | 70 | /* are we asked to exclude the parent's process ID? */
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[2725] | 71 | omits_p->data = utoa((unsigned)getppid());
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[821] | 72 | }
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| 73 | }
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| 74 | #endif
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| 75 | /* Looks like everything is set to go. */
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[2725] | 76 | argv += optind;
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| 77 | while (*argv) {
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[1765] | 78 | pid_t *pidList;
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| 79 | pid_t *pl;
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[821] | 80 |
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| 81 | /* reverse the pidlist like GNU pidof does. */
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[2725] | 82 | pidList = pidlist_reverse(find_pid_by_name(*argv));
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[1765] | 83 | for (pl = pidList; *pl; pl++) {
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[821] | 84 | #if ENABLE_FEATURE_PIDOF_OMIT
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[1765] | 85 | if (opt & OPT_OMIT) {
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[821] | 86 | llist_t *omits_p = omits;
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[1765] | 87 | while (omits_p) {
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[2725] | 88 | if (xatoul(omits_p->data) == (unsigned long)(*pl)) {
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[1765] | 89 | goto omitting;
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| 90 | }
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| 91 | omits_p = omits_p->link;
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| 92 | }
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[821] | 93 | }
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| 94 | #endif
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[1765] | 95 | printf(" %u" + first, (unsigned)*pl);
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| 96 | first = 0;
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| 97 | if (ENABLE_FEATURE_PIDOF_SINGLE && (opt & OPT_SINGLE))
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[821] | 98 | break;
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[1765] | 99 | #if ENABLE_FEATURE_PIDOF_OMIT
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| 100 | omitting: ;
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| 101 | #endif
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[821] | 102 | }
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| 103 | free(pidList);
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[2725] | 104 | argv++;
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[821] | 105 | }
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[2725] | 106 | if (!first)
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| 107 | bb_putchar('\n');
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[821] | 108 |
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| 109 | #if ENABLE_FEATURE_PIDOF_OMIT
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| 110 | if (ENABLE_FEATURE_CLEAN_UP)
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| 111 | llist_free(omits, NULL);
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| 112 | #endif
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[1765] | 113 | return first; /* 1 (failure) - no processes found */
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[821] | 114 | }
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