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    Contents of /trunk/mkinitrd-magellan/busybox/procps/pidof.c

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    Revision 532 - (show annotations) (download)
    Sat Sep 1 22:45:15 2007 UTC (16 years, 9 months ago) by niro
    File MIME type: text/plain
    File size: 2199 byte(s) 
    -import if magellan mkinitrd; it is a fork of redhats mkinitrd-5.0.8 with all magellan patches and features; deprecates magellan-src/mkinitrd
    1 /* vi: set sw=4 ts=4: */
    2 /*
    3 * pidof implementation for busybox
    4 *
    5 * Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org>
    6 *
    7 * Licensed under the GPL version 2, see the file LICENSE in this tarball.
    8 */
    9
    10 #include "busybox.h"
    11
    12 enum {
    13 USE_FEATURE_PIDOF_SINGLE(OPTBIT_SINGLE,)
    14 USE_FEATURE_PIDOF_OMIT( OPTBIT_OMIT ,)
    15 OPT_SINGLE = USE_FEATURE_PIDOF_SINGLE((1<<OPTBIT_SINGLE)) + 0,
    16 OPT_OMIT = USE_FEATURE_PIDOF_OMIT( (1<<OPTBIT_OMIT )) + 0,
    17 };
    18
    19 int pidof_main(int argc, char **argv)
    20 {
    21 unsigned first = 1;
    22 unsigned fail = 1;
    23 unsigned opt;
    24 #if ENABLE_FEATURE_PIDOF_OMIT
    25 llist_t *omits = NULL; /* list of pids to omit */
    26 opt_complementary = "o::";
    27 #endif
    28
    29 /* do unconditional option parsing */
    30 opt = getopt32(argc, argv, ""
    31 USE_FEATURE_PIDOF_SINGLE ("s")
    32 USE_FEATURE_PIDOF_OMIT("o:", &omits));
    33
    34 #if ENABLE_FEATURE_PIDOF_OMIT
    35 /* fill omit list. */
    36 {
    37 char getppid_str[sizeof(int)*3 + 1];
    38 llist_t * omits_p = omits;
    39 while (omits_p) {
    40 /* are we asked to exclude the parent's process ID? */
    41 if (!strncmp(omits_p->data, "%PPID", 5)) {
    42 llist_pop(&omits_p);
    43 snprintf(getppid_str, sizeof(getppid_str), "%u", (unsigned)getppid());
    44 llist_add_to(&omits_p, getppid_str);
    45 }
    46 omits_p = omits_p->link;
    47 }
    48 }
    49 #endif
    50 /* Looks like everything is set to go. */
    51 while (optind < argc) {
    52 pid_t *pidList;
    53 pid_t *pl;
    54
    55 /* reverse the pidlist like GNU pidof does. */
    56 pidList = pidlist_reverse(find_pid_by_name(argv[optind]));
    57 for (pl = pidList; *pl; pl++) {
    58 SKIP_FEATURE_PIDOF_OMIT(const) unsigned omitted = 0;
    59 #if ENABLE_FEATURE_PIDOF_OMIT
    60 if (opt & OPT_OMIT) {
    61 llist_t *omits_p = omits;
    62 while (omits_p) {
    63 if (xatoul(omits_p->data) == *pl) {
    64 omitted = 1;
    65 break;
    66 } else
    67 omits_p = omits_p->link;
    68 }
    69 }
    70 #endif
    71 if (!omitted) {
    72 printf(" %u" + first, (unsigned)*pl);
    73 first = 0;
    74 }
    75 fail = (!ENABLE_FEATURE_PIDOF_OMIT && omitted);
    76
    77 if (ENABLE_FEATURE_PIDOF_SINGLE && (opt & OPT_SINGLE))
    78 break;
    79 }
    80 free(pidList);
    81 optind++;
    82 }
    83 putchar('\n');
    84
    85 #if ENABLE_FEATURE_PIDOF_OMIT
    86 if (ENABLE_FEATURE_CLEAN_UP)
    87 llist_free(omits, NULL);
    88 #endif
    89 return fail ? EXIT_FAILURE : EXIT_SUCCESS;
    90 }