source: MondoRescue/branches/stable/mindi-busybox/procps/pidof.c @ 821

Last change on this file since 821 was 821, checked in by Bruno Cornec, 14 years ago

Addition of busybox 1.2.1 as a mindi-busybox new package
This should avoid delivering binary files in mindi not built there (Fedora and Debian are quite serious about that)

File size: 2.5 KB
RevLine 
[821]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 v2, see the file LICENSE in this tarball.
8 */
9
10#include "busybox.h"
11#include <stdio.h>
12#include <stdlib.h>
13#include <errno.h>
14#include <unistd.h>
15#include <signal.h>
16#include <ctype.h>
17#include <string.h>
18#include <sys/types.h>
19#include <unistd.h>
20
21#if ENABLE_FEATURE_PIDOF_SINGLE
22#define _SINGLE_COMPL(a) a
23#define SINGLE (1<<0)
24#else
25#define _SINGLE_COMPL(a)
26#define SINGLE (0)
27#endif
28
29#if ENABLE_FEATURE_PIDOF_OMIT
30#define _OMIT_COMPL(a) a
31#define _OMIT(a) ,a
32#if ENABLE_FEATURE_PIDOF_SINGLE
33#define OMIT (1<<1)
34#else
35#define OMIT (1<<0)
36#endif
37#else
38#define _OMIT_COMPL(a) ""
39#define _OMIT(a)
40#define OMIT (0)
41#define omitted (0)
42#endif
43
44int pidof_main(int argc, char **argv)
45{
46    unsigned n = 0;
47    unsigned fail = 1;
48    unsigned long int opt;
49#if ENABLE_FEATURE_PIDOF_OMIT
50    llist_t *omits = NULL; /* list of pids to omit */
51    bb_opt_complementally = _OMIT_COMPL("o::");
52#endif
53
54    /* do unconditional option parsing */
55    opt = bb_getopt_ulflags(argc, argv,
56                    _SINGLE_COMPL("s") _OMIT_COMPL("o:")
57                    _OMIT(&omits));
58
59#if ENABLE_FEATURE_PIDOF_OMIT
60    /* fill omit list.  */
61    {
62        char getppid_str[32];
63        llist_t * omits_p = omits;
64        while (omits_p) {
65            /* are we asked to exclude the parent's process ID?  */
66            if (!strncmp(omits_p->data, "%PPID", 5)) {
67                llist_pop(&omits_p);
68                snprintf(getppid_str, sizeof(getppid_str), "%d", getppid());
69                llist_add_to(&omits_p, getppid_str);
70            }
71            omits_p = omits_p->link;
72        }
73    }
74#endif
75    /* Looks like everything is set to go.  */
76    while(optind < argc) {
77        long *pidList;
78        long *pl;
79
80        /* reverse the pidlist like GNU pidof does.  */
81        pidList = pidlist_reverse(find_pid_by_name(argv[optind]));
82        for(pl = pidList; *pl > 0; pl++) {
83#if ENABLE_FEATURE_PIDOF_OMIT
84            unsigned omitted = 0;
85            if (opt & OMIT) {
86                llist_t *omits_p = omits;
87                while (omits_p)
88                    if (strtol(omits_p->data, NULL, 10) == *pl) {
89                        omitted = 1; break;
90                    } else
91                        omits_p = omits_p->link;
92            }
93#endif
94            if (!omitted) {
95                if (n) {
96                    putchar(' ');
97                } else {
98                    n = 1;
99                }
100                printf("%ld", *pl);
101            }
102            fail = (!ENABLE_FEATURE_PIDOF_OMIT && omitted);
103
104            if (ENABLE_FEATURE_PIDOF_SINGLE && (opt & SINGLE))
105                break;
106        }
107        free(pidList);
108        optind++;
109    }
110    putchar('\n');
111
112#if ENABLE_FEATURE_PIDOF_OMIT
113    if (ENABLE_FEATURE_CLEAN_UP)
114        llist_free(omits, NULL);
115#endif
116    return fail ? EXIT_FAILURE : EXIT_SUCCESS;
117}
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