mirror of
https://sourceware.org/git/glibc.git
synced 2024-10-02 20:17:45 +00:00
41bdb6e20c
2001-07-06 Paul Eggert <eggert@twinsun.com> * manual/argp.texi: Remove ignored LGPL copyright notice; it's not appropriate for documentation anyway. * manual/libc-texinfo.sh: "Library General Public License" -> "Lesser General Public License". 2001-07-06 Andreas Jaeger <aj@suse.de> * All files under GPL/LGPL version 2: Place under LGPL version 2.1.
74 lines
1.9 KiB
C
74 lines
1.9 KiB
C
/* Environment handling for dynamic loader.
|
|
Copyright (C) 1995, 1996, 1997, 1998, 2000 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, write to the Free
|
|
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
|
|
02111-1307 USA. */
|
|
|
|
#include <string.h>
|
|
#include <ldsodefs.h>
|
|
|
|
extern char **_environ;
|
|
extern void unsetenv (const char *name);
|
|
|
|
/* Walk through the environment of the process and return all entries
|
|
starting with `LD_'. */
|
|
char *
|
|
internal_function
|
|
_dl_next_ld_env_entry (char ***position)
|
|
{
|
|
char **current = *position;
|
|
char *result = NULL;
|
|
|
|
if (current == NULL)
|
|
/* We start over. */
|
|
current = _environ;
|
|
|
|
while (result == NULL && *current != NULL)
|
|
{
|
|
if ((*current)[0] == 'L' && (*current)[1] == 'D' && (*current)[2] == '_')
|
|
result = *current;
|
|
|
|
++current;
|
|
}
|
|
|
|
/* Save current position for next visit. */
|
|
*position = current;
|
|
|
|
return result;
|
|
}
|
|
|
|
void
|
|
unsetenv (const char *name)
|
|
{
|
|
const size_t len = strlen (name);
|
|
char **ep;
|
|
|
|
ep = _environ;
|
|
while (*ep != NULL)
|
|
if (!strncmp (*ep, name, len) && (*ep)[len] == '=')
|
|
{
|
|
/* Found it. Remove this pointer by moving later ones back. */
|
|
char **dp = ep;
|
|
|
|
do
|
|
dp[0] = dp[1];
|
|
while (*dp++);
|
|
/* Continue the loop in case NAME appears again. */
|
|
}
|
|
else
|
|
++ep;
|
|
}
|