mirror of
https://sourceware.org/git/glibc.git
synced 2025-11-03 20:53:13 +03:00
39 lines
1.2 KiB
C
39 lines
1.2 KiB
C
/* Copyright (C) 1991-2024 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
|
|
The GNU C Library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Lesser General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 2.1 of the License, or (at your option) any later version.
|
|
|
|
The GNU C Library is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public
|
|
License along with the GNU C Library; if not, see
|
|
<https://www.gnu.org/licenses/>. */
|
|
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <unistd.h>
|
|
|
|
char *
|
|
getenv (const char *name)
|
|
{
|
|
if (__environ == NULL || name[0] == '\0')
|
|
return NULL;
|
|
|
|
size_t len = strlen (name);
|
|
for (char **ep = __environ; *ep != NULL; ++ep)
|
|
{
|
|
if (name[0] == (*ep)[0]
|
|
&& strncmp (name, *ep, len) == 0 && (*ep)[len] == '=')
|
|
return *ep + len + 1;
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
libc_hidden_def (getenv)
|