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e2eaf477 ILT |
1 | /* Copyright (C) 1991, 1994, 1995, 1996 Free Software Foundation, Inc. |
2 | This file based on putenv.c in the GNU C Library. | |
3 | ||
4 | The GNU C Library is free software; you can redistribute it and/or | |
5 | modify it under the terms of the GNU Library General Public License as | |
6 | published by the Free Software Foundation; either version 2 of the | |
7 | License, or (at your option) any later version. | |
8 | ||
9 | The GNU C Library is distributed in the hope that it will be useful, | |
10 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
12 | Library General Public License for more details. | |
13 | ||
14 | You should have received a copy of the GNU Library General Public | |
15 | License along with the GNU C Library; see the file COPYING.LIB. If not, | |
16 | write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
17 | Boston, MA 02111-1307, USA. */ | |
18 | ||
19 | #if defined (_AIX) && !defined (__GNUC__) | |
20 | #pragma alloca | |
21 | #endif | |
22 | ||
23 | #if HAVE_CONFIG_H | |
24 | # include <config.h> | |
25 | #endif | |
26 | ||
27 | #include "ansidecl.h" | |
28 | ||
29 | #if HAVE_STDLIB_H | |
30 | # include <stdlib.h> | |
31 | #endif | |
32 | #if HAVE_STRING_H | |
33 | # include <string.h> | |
34 | #endif | |
35 | ||
36 | #ifdef HAVE_ALLOCA_H | |
37 | # include <alloca.h> | |
38 | #else | |
39 | # ifndef alloca | |
40 | # ifdef __GNUC__ | |
41 | # define alloca __builtin_alloca | |
42 | # else | |
43 | extern char *alloca (); | |
44 | # endif /* __GNUC__ */ | |
45 | # endif /* alloca */ | |
46 | #endif /* HAVE_ALLOCA_H */ | |
47 | ||
48 | /* Below this point, it's verbatim code from the glibc-2.0 implementation */ | |
49 | ||
50 | ||
51 | /* Put STRING, which is of the form "NAME=VALUE", in the environment. */ | |
52 | int | |
53 | putenv (string) | |
54 | const char *string; | |
55 | { | |
56 | const char *const name_end = strchr (string, '='); | |
57 | ||
58 | if (name_end) | |
59 | { | |
60 | char *name = (char *) alloca (name_end - string + 1); | |
61 | memcpy (name, string, name_end - string); | |
62 | name[name_end - string] = '\0'; | |
63 | return setenv (name, name_end + 1, 1); | |
64 | } | |
65 | ||
66 | unsetenv (string); | |
67 | return 0; | |
68 | } |