1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
|
/* vi: set sw=4 ts=4: */
/*
* pidof implementation for busybox
*
* Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org>
*
* Licensed under the GPL v2, see the file LICENSE in this tarball.
*/
#include <stdio.h>
#include <stdlib.h>
#include <errno.h>
#include <unistd.h>
#include <signal.h>
#include <ctype.h>
#include <string.h>
#include <sys/types.h>
#include <unistd.h>
#include "busybox.h"
#if ENABLE_FEATURE_PIDOF_SINGLE
#define _SINGLE_COMPL(a) a
#define SINGLE (1<<0)
#else
#define _SINGLE_COMPL(a)
#define SINGLE (0)
#endif
#if ENABLE_FEATURE_PIDOF_OMIT
#define _OMIT_COMPL(a) a
#define _OMIT(a) ,a
#if ENABLE_FEATURE_PIDOF_SINGLE
#define OMIT (1<<1)
#else
#define OMIT (1<<0)
#endif
#else
#define _OMIT_COMPL(a) ""
#define _OMIT(a)
#define OMIT (0)
#define omitted (0)
#endif
extern int pidof_main(int argc, char **argv)
{
unsigned n = 0;
unsigned fail = 1;
unsigned long int opt;
#if ENABLE_FEATURE_PIDOF_OMIT
llist_t *omits = NULL; /* list of pids to omit */
bb_opt_complementally = _OMIT_COMPL("o*");
#endif
/* do unconditional option parsing */
opt = bb_getopt_ulflags(argc, argv,
_SINGLE_COMPL("s") _OMIT_COMPL("o:")
_OMIT(&omits));
#if ENABLE_FEATURE_PIDOF_OMIT
/* fill omit list. */
{
RESERVE_CONFIG_BUFFER(getppid_str, 32);
llist_t * omits_p = omits;
while (omits_p) {
/* are we asked to exclude the parent's process ID? */
if (!strncmp(omits_p->data, "%PPID", 5)) {
omits_p = llist_free_one(omits_p);
snprintf(getppid_str, sizeof(getppid_str), "%d", getppid());
omits_p = llist_add_to(omits_p, getppid_str);
#if 0
} else {
bb_error_msg_and_die("illegal omit pid value (%s)!\n",
omits_p->data);
#endif
}
omits_p = omits_p->link;
}
if (ENABLE_FEATURE_CLEAN_UP)
RELEASE_CONFIG_BUFFER(getppid_str);
}
#endif
/* Looks like everything is set to go. */
while(optind < argc) {
long *pidList;
long *pl;
/* reverse the pidlist like GNU pidof does. */
pidList = pidlist_reverse(find_pid_by_name(argv[optind]));
for(pl = pidList; *pl > 0; pl++) {
#if ENABLE_FEATURE_PIDOF_OMIT
unsigned omitted = 0;
if (opt & OMIT) {
llist_t *omits_p = omits;
while (omits_p)
if (strtol(omits_p->data, NULL, 10) == *pl) {
omitted = 1; break;
} else
omits_p = omits_p->link;
}
#endif
if (!omitted) {
if (n) {
putchar(' ');
} else {
n = 1;
}
printf("%ld", *pl);
}
fail = (!ENABLE_FEATURE_PIDOF_OMIT && omitted);
if (ENABLE_FEATURE_PIDOF_SINGLE && (opt & SINGLE))
break;
}
free(pidList);
optind++;
}
putchar('\n');
#if ENABLE_FEATURE_PIDOF_OMIT
if (ENABLE_FEATURE_CLEAN_UP)
llist_free(omits);
#endif
return fail ? EXIT_FAILURE : EXIT_SUCCESS;
}
|
