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de4a40d0 | 1 | /* Copyright (C) 1991, 94, 95, 96, 97, 98, 99 Free Software Foundation, Inc. |
f0e44959 | 2 | This file is part of the GNU C Library. |
28f540f4 | 3 | |
f0e44959 | 4 | The GNU C Library is free software; you can redistribute it and/or |
41bdb6e2 AJ |
5 | modify it under the terms of the GNU Lesser General Public |
6 | License as published by the Free Software Foundation; either | |
7 | version 2.1 of the License, or (at your option) any later version. | |
28f540f4 | 8 | |
f0e44959 UD |
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 | |
41bdb6e2 | 12 | Lesser General Public License for more details. |
28f540f4 | 13 | |
41bdb6e2 AJ |
14 | You should have received a copy of the GNU Lesser General Public |
15 | License along with the GNU C Library; if not, write to the Free | |
16 | Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA | |
17 | 02111-1307 USA. */ | |
28f540f4 | 18 | |
ff152e3f | 19 | #if defined _AIX && !defined __GNUC__ |
196980f5 RM |
20 | #pragma alloca |
21 | #endif | |
28f540f4 | 22 | |
f0e44959 UD |
23 | #if HAVE_CONFIG_H |
24 | # include <config.h> | |
28f540f4 RM |
25 | #endif |
26 | ||
196980f5 | 27 | #if _LIBC || HAVE_STDLIB_H |
f0e44959 | 28 | # include <stdlib.h> |
28f540f4 | 29 | #endif |
196980f5 | 30 | #if _LIBC || HAVE_STRING_H |
f0e44959 | 31 | # include <string.h> |
28f540f4 | 32 | #endif |
28f540f4 | 33 | |
196980f5 | 34 | #if !__GNU_LIBRARY__ && !HAVE_STRCHR |
f0e44959 | 35 | # define strchr index |
28f540f4 | 36 | #endif |
28f540f4 | 37 | |
196980f5 | 38 | #ifndef _LIBC |
f0e44959 UD |
39 | # ifdef HAVE_ALLOCA_H |
40 | # include <alloca.h> | |
41 | # else | |
42 | # ifdef __GNUC__ | |
43 | # define alloca __builtin_alloca | |
44 | # else | |
196980f5 | 45 | extern char *alloca (); |
f0e44959 UD |
46 | # endif /* __GNUC__ */ |
47 | # endif /* HAVE_ALLOCA_H */ | |
196980f5 | 48 | #endif /* _LIBC */ |
28f540f4 RM |
49 | |
50 | ||
51 | /* Put STRING, which is of the form "NAME=VALUE", in the environment. */ | |
52 | int | |
53 | putenv (string) | |
219aa9e9 | 54 | char *string; |
28f540f4 RM |
55 | { |
56 | const char *const name_end = strchr (string, '='); | |
28f540f4 | 57 | |
86187531 | 58 | if (name_end != NULL) |
28f540f4 | 59 | { |
86187531 | 60 | #ifdef _LIBC |
ff152e3f | 61 | char *name = strndupa (string, name_end - string); |
86187531 | 62 | #else |
ff152e3f | 63 | char *name = alloca (name_end - string + 1); |
196980f5 RM |
64 | memcpy (name, string, name_end - string); |
65 | name[name_end - string] = '\0'; | |
86187531 | 66 | #endif |
de4a40d0 | 67 | return __add_to_environ (name, NULL, string, 1); |
28f540f4 | 68 | } |
28f540f4 | 69 | |
50304ef0 | 70 | __unsetenv (string); |
28f540f4 RM |
71 | return 0; |
72 | } |