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

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    Revision 532 - (hide annotations) (download)
    Sat Sep 1 22:45:15 2007 UTC (16 years, 8 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 niro 532 /* 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     }