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
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
|
/* vi: set sw=4 ts=4: */
/*
* Mini run-parts implementation for busybox
*
* Copyright (C) 2007 Bernhard Fischer
*
* Based on a older version that was in busybox which was 1k big..
* Copyright (C) 2001 by Emanuele Aina <emanuele.aina@tiscali.it>
*
* Based on the Debian run-parts program, version 1.15
* Copyright (C) 1996 Jeff Noxon <jeff@router.patch.net>,
* Copyright (C) 1996-1999 Guy Maor <maor@debian.org>
*
*
* Licensed under GPL v2 or later, see file LICENSE in this tarball for details.
*/
/* This is my first attempt to write a program in C (well, this is my first
* attempt to write a program! :-) . */
/* This piece of code is heavily based on the original version of run-parts,
* taken from debian-utils. I've only removed the long options and a the
* report mode. As the original run-parts support only long options, I've
* broken compatibility because the BusyBox policy doesn't allow them.
* The supported options are:
* -t test. Print the name of the files to be executed, without
* execute them.
* -a ARG argument. Pass ARG as an argument the program executed. It can
* be repeated to pass multiple arguments.
* -u MASK umask. Set the umask of the program executed to MASK.
*/
#include "busybox.h"
#include <getopt.h>
#if ENABLE_FEATURE_RUN_PARTS_LONG_OPTIONS
static const struct option runparts_long_options[] = {
{ "arg", 1, NULL, 'a' },
{ "umask", 1, NULL, 'u' },
{ "test", 0, NULL, 't' },
#if ENABLE_FEATURE_RUN_PARTS_FANCY
{ "list", 0, NULL, 'l' },
//XXX:TODO: { "reverse", 0, NULL, 'r' },
//XXX:TODO: { "verbose", 0, NULL, 'v' },
#endif
{ 0, 0, 0, 0 }
};
#endif
struct globals {
smalluint mode;
char *cmd[10]; /* merely arbitrary arg count */
};
#define G (*(struct globals*)&bb_common_bufsiz1)
/* valid_name */
/* True or false? Is this a valid filename (upper/lower alpha, digits,
* underscores, and hyphens only?)
*/
static bool invalid_name(const char *c)
{
while (*c) {
if (!isalnum(*c) && (*c != '_') && (*c != '-' && (*c != '/'))) {
return 1;
}
++c;
}
return 0;
}
#define RUN_PARTS_OPT_a (1<<0)
#define RUN_PARTS_OPT_u (1<<1)
#define RUN_PARTS_OPT_t (1<<2)
#if ENABLE_FEATURE_RUN_PARTS_FANCY
#define RUN_PARTS_OPT_l (1<<3)
#endif
#define test_mode (G.mode & RUN_PARTS_OPT_t)
#if ENABLE_FEATURE_RUN_PARTS_FANCY
#define list_mode (G.mode & RUN_PARTS_OPT_l)
#else
#define list_mode (0)
#endif
static int act(const char *file, struct stat *statbuf, void *args, int depth)
{
int ret;
if (depth == 1)
return TRUE;
if (depth == 2 &&
((!list_mode && access(file, X_OK)) ||
invalid_name(file) ||
!(statbuf->st_mode & (S_IFREG | S_IFLNK))) )
return SKIP;
if (test_mode || list_mode) {
puts(file);
return TRUE;
}
G.cmd[0] = (char*)file;
ret = wait4pid(spawn(G.cmd));
if (ret < 0) {
bb_perror_msg("failed to exec %s", file);
} else if (ret > 0) {
bb_error_msg("%s exited with return code %d", file, ret);
}
return !ret;
}
int run_parts_main(int argc, char **argv);
int run_parts_main(int argc, char **argv)
{
char *umask_p;
llist_t *arg_list = NULL;
unsigned tmp;
umask(022);
/* We require exactly one argument: the directory name */
opt_complementary = "=1:a::";
#if ENABLE_FEATURE_RUN_PARTS_LONG_OPTIONS
applet_long_options = runparts_long_options;
#endif
tmp = getopt32(argc, argv, "a:u:t"USE_FEATURE_RUN_PARTS_FANCY("l"), &arg_list, &umask_p);
G.mode = tmp &~ (RUN_PARTS_OPT_a|RUN_PARTS_OPT_u);
if (tmp & RUN_PARTS_OPT_u) {
/* Check and set the umask of the program executed.
* As stated in the original run-parts, the octal conversion in
* libc is not foolproof; it will take the 8 and 9 digits under
* some circumstances. We'll just have to live with it.
*/
umask(xstrtoul_range(umask_p, 8, 0, 07777));
}
//XXX: FIXME: reverse the list before handing it over to the user.
//XXX: FIXME: The common case seems to be to use the order given by the user
arg_list = llist_rev(arg_list); /* XXX: getopt32 appends them */
for (tmp = 1; arg_list; arg_list = arg_list->link, tmp++)
G.cmd[tmp] = arg_list->data;
/* G.cmd[tmp] = NULL; - G is already zeroed out */
if (!recursive_action(argv[argc - 1],
ACTION_RECURSE|ACTION_FOLLOWLINKS,
act, /* file action */
act, /* dir action */
NULL, /* user data */
1 /* depth */
))
return EXIT_FAILURE;
return EXIT_SUCCESS;
}
|
