Annotation of /trunk/mkinitrd-magellan/busybox/coreutils/env.c
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Revision 816 -
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Fri Apr 24 18:33:46 2009 UTC (15 years, 1 month ago) by niro
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Fri Apr 24 18:33:46 2009 UTC (15 years, 1 month ago) by niro
File MIME type: text/plain
File size: 3837 byte(s)
-updated to busybox-1.13.4
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 | 816 | /* cleanenv was static - why? */ |
47 | char *cleanenv[1]; | ||
48 | niro | 532 | char **ep; |
49 | unsigned opt; | ||
50 | llist_t *unset_env = NULL; | ||
51 | |||
52 | opt_complementary = "u::"; | ||
53 | #if ENABLE_FEATURE_ENV_LONG_OPTIONS | ||
54 | niro | 816 | applet_long_options = env_longopts; |
55 | niro | 532 | #endif |
56 | niro | 816 | opt = getopt32(argv, "+iu:", &unset_env); |
57 | niro | 532 | argv += optind; |
58 | if (*argv && LONE_DASH(argv[0])) { | ||
59 | opt |= 1; | ||
60 | ++argv; | ||
61 | } | ||
62 | niro | 816 | if (opt & 1) { |
63 | cleanenv[0] = NULL; | ||
64 | niro | 532 | environ = cleanenv; |
65 | niro | 816 | } else { |
66 | niro | 532 | while (unset_env) { |
67 | niro | 816 | unsetenv(llist_pop(&unset_env)); |
68 | niro | 532 | } |
69 | } | ||
70 | |||
71 | while (*argv && (strchr(*argv, '=') != NULL)) { | ||
72 | if (putenv(*argv) < 0) { | ||
73 | bb_perror_msg_and_die("putenv"); | ||
74 | } | ||
75 | ++argv; | ||
76 | } | ||
77 | |||
78 | if (*argv) { | ||
79 | niro | 816 | BB_EXECVP(*argv, argv); |
80 | niro | 532 | /* SUSv3-mandated exit codes. */ |
81 | xfunc_error_retval = (errno == ENOENT) ? 127 : 126; | ||
82 | niro | 816 | bb_simple_perror_msg_and_die(*argv); |
83 | niro | 532 | } |
84 | |||
85 | for (ep = environ; *ep; ep++) { | ||
86 | puts(*ep); | ||
87 | } | ||
88 | |||
89 | niro | 816 | fflush_stdout_and_exit(EXIT_SUCCESS); |
90 | niro | 532 | } |
91 | |||
92 | /* | ||
93 | * Copyright (c) 1988, 1993, 1994 | ||
94 | * The Regents of the University of California. All rights reserved. | ||
95 | * | ||
96 | * Redistribution and use in source and binary forms, with or without | ||
97 | * modification, are permitted provided that the following conditions | ||
98 | * are met: | ||
99 | * 1. Redistributions of source code must retain the above copyright | ||
100 | * notice, this list of conditions and the following disclaimer. | ||
101 | * 2. Redistributions in binary form must reproduce the above copyright | ||
102 | * notice, this list of conditions and the following disclaimer in the | ||
103 | * documentation and/or other materials provided with the distribution. | ||
104 | * | ||
105 | * 3. <BSD Advertising Clause omitted per the July 22, 1999 licensing change | ||
106 | * ftp://ftp.cs.berkeley.edu/pub/4bsd/README.Impt.License.Change> | ||
107 | * | ||
108 | * 4. Neither the name of the University nor the names of its contributors | ||
109 | * may be used to endorse or promote products derived from this software | ||
110 | * without specific prior written permission. | ||
111 | * | ||
112 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND | ||
113 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | ||
114 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | ||
115 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | ||
116 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | ||
117 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | ||
118 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | ||
119 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | ||
120 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | ||
121 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | ||
122 | * SUCH DAMAGE. | ||
123 | */ |