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dff8da6b | 1 | /* Copyright (C) 1991-2024 Free Software Foundation, Inc. |
f65fd747 | 2 | This file is part of the GNU C Library. |
28f540f4 | 3 | |
f65fd747 | 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 | |
f65fd747 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 | 14 | You should have received a copy of the GNU Lesser General Public |
59ba27a6 | 15 | License along with the GNU C Library; if not, see |
5a82c748 | 16 | <https://www.gnu.org/licenses/>. */ |
28f540f4 | 17 | |
28f540f4 RM |
18 | #include <stdlib.h> |
19 | #include <string.h> | |
20 | #include <unistd.h> | |
21 | ||
28f540f4 | 22 | char * |
9d46370c | 23 | getenv (const char *name) |
28f540f4 | 24 | { |
31f7410f | 25 | if (__environ == NULL || name[0] == '\0') |
28f540f4 RM |
26 | return NULL; |
27 | ||
a6ccce23 AZ |
28 | size_t len = strlen (name); |
29 | for (char **ep = __environ; *ep != NULL; ++ep) | |
31f7410f | 30 | { |
a6ccce23 AZ |
31 | if (name[0] == (*ep)[0] |
32 | && strncmp (name, *ep, len) == 0 && (*ep)[len] == '=') | |
33 | return *ep + len + 1; | |
31f7410f | 34 | } |
28f540f4 RM |
35 | |
36 | return NULL; | |
37 | } | |
a757607d | 38 | libc_hidden_def (getenv) |