Annotation of /trunk/mkinitrd-magellan/busybox/coreutils/env.c
Parent Directory | Revision Log
Revision 1123 -
(hide annotations)
(download)
Wed Aug 18 21:56:57 2010 UTC (13 years, 9 months ago) by niro
File MIME type: text/plain
File size: 3936 byte(s)
Wed Aug 18 21:56:57 2010 UTC (13 years, 9 months ago) by niro
File MIME type: text/plain
File size: 3936 byte(s)
-updated to busybox-1.17.1
1 | niro | 532 | /* vi: set sw=4 ts=4: */ |
2 | /* | ||
3 | * env implementation for busybox | ||
4 | * | ||
5 | * Copyright (c) 1988, 1993, 1994 | ||
6 | * The Regents of the University of California. All rights reserved. | ||
7 | * | ||
8 | * Licensed under GPLv2 or later, see file LICENSE in this tarball for details. | ||
9 | * | ||
10 | * Original copyright notice is retained at the end of this file. | ||
11 | * | ||
12 | * Modified for BusyBox by Erik Andersen <andersen@codepoet.org> | ||
13 | */ | ||
14 | |||
15 | /* BB_AUDIT SUSv3 compliant */ | ||
16 | /* http://www.opengroup.org/onlinepubs/007904975/utilities/env.html */ | ||
17 | |||
18 | /* Mar 16, 2003 Manuel Novoa III (mjn3@codepoet.org) | ||
19 | * | ||
20 | * Fixed bug involving exit return codes if execvp fails. Also added | ||
21 | * output error checking. | ||
22 | */ | ||
23 | |||
24 | /* | ||
25 | * Modified by Vladimir Oleynik <dzo@simtreas.ru> (C) 2003 | ||
26 | * - correct "-" option usage | ||
27 | * - multiple "-u unsetenv" support | ||
28 | * - GNU long option support | ||
29 | * - use xfunc_error_retval | ||
30 | */ | ||
31 | |||
32 | niro | 816 | /* This is a NOEXEC applet. Be very careful! */ |
33 | niro | 532 | |
34 | niro | 816 | #include "libbb.h" |
35 | |||
36 | niro | 532 | #if ENABLE_FEATURE_ENV_LONG_OPTIONS |
37 | niro | 816 | static const char env_longopts[] ALIGN1 = |
38 | "ignore-environment\0" No_argument "i" | ||
39 | "unset\0" Required_argument "u" | ||
40 | ; | ||
41 | niro | 532 | #endif |
42 | |||
43 | niro | 816 | int env_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; |
44 | int env_main(int argc UNUSED_PARAM, char **argv) | ||
45 | niro | 532 | { |
46 | niro | 984 | unsigned opts; |
47 | niro | 532 | llist_t *unset_env = NULL; |
48 | |||
49 | opt_complementary = "u::"; | ||
50 | #if ENABLE_FEATURE_ENV_LONG_OPTIONS | ||
51 | niro | 816 | applet_long_options = env_longopts; |
52 | niro | 532 | #endif |
53 | niro | 984 | opts = getopt32(argv, "+iu:", &unset_env); |
54 | niro | 532 | argv += optind; |
55 | niro | 984 | if (argv[0] && LONE_DASH(argv[0])) { |
56 | opts |= 1; | ||
57 | niro | 532 | ++argv; |
58 | } | ||
59 | niro | 984 | if (opts & 1) { |
60 | clearenv(); | ||
61 | niro | 532 | } |
62 | niro | 984 | while (unset_env) { |
63 | char *var = llist_pop(&unset_env); | ||
64 | /* This does not handle -uVAR=VAL | ||
65 | * (coreutils _sets_ the variable in that case): */ | ||
66 | /*unsetenv(var);*/ | ||
67 | /* This does, but uses somewhan undocumented feature that | ||
68 | * putenv("name_without_equal_sign") unsets the variable: */ | ||
69 | putenv(var); | ||
70 | } | ||
71 | niro | 532 | |
72 | while (*argv && (strchr(*argv, '=') != NULL)) { | ||
73 | if (putenv(*argv) < 0) { | ||
74 | bb_perror_msg_and_die("putenv"); | ||
75 | } | ||
76 | ++argv; | ||
77 | } | ||
78 | |||
79 | niro | 1123 | if (argv[0]) { |
80 | BB_EXECVP_or_die(argv); | ||
81 | niro | 532 | } |
82 | |||
83 | niro | 984 | if (environ) { /* clearenv() may set environ == NULL! */ |
84 | char **ep; | ||
85 | for (ep = environ; *ep; ep++) { | ||
86 | puts(*ep); | ||
87 | } | ||
88 | niro | 532 | } |
89 | |||
90 | niro | 816 | fflush_stdout_and_exit(EXIT_SUCCESS); |
91 | niro | 532 | } |
92 | |||
93 | /* | ||
94 | * Copyright (c) 1988, 1993, 1994 | ||
95 | * The Regents of the University of California. All rights reserved. | ||
96 | * | ||
97 | * Redistribution and use in source and binary forms, with or without | ||
98 | * modification, are permitted provided that the following conditions | ||
99 | * are met: | ||
100 | * 1. Redistributions of source code must retain the above copyright | ||
101 | * notice, this list of conditions and the following disclaimer. | ||
102 | * 2. Redistributions in binary form must reproduce the above copyright | ||
103 | * notice, this list of conditions and the following disclaimer in the | ||
104 | * documentation and/or other materials provided with the distribution. | ||
105 | * | ||
106 | * 3. <BSD Advertising Clause omitted per the July 22, 1999 licensing change | ||
107 | * ftp://ftp.cs.berkeley.edu/pub/4bsd/README.Impt.License.Change> | ||
108 | * | ||
109 | * 4. Neither the name of the University nor the names of its contributors | ||
110 | * may be used to endorse or promote products derived from this software | ||
111 | * without specific prior written permission. | ||
112 | * | ||
113 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND | ||
114 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | ||
115 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | ||
116 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | ||
117 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | ||
118 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | ||
119 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | ||
120 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | ||
121 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | ||
122 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | ||
123 | * SUCH DAMAGE. | ||
124 | */ |