1 /*****************************************************************************
2 * setenv.c: POSIX setenv() & unsetenv() replacement
3 *****************************************************************************
4 * Copyright © 2011 Rémi Denis-Courmont
6 * This program is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU Lesser General Public License as published by
8 * the Free Software Foundation; either version 2.1 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public License
17 * along with this program; if not, write to the Free Software Foundation,
18 * Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
19 *****************************************************************************/
28 int setenv (const char *name, const char *value, int override)
31 if (override == 0 && getenv (name) != NULL)
34 size_t namelen = strlen (name);
35 size_t valuelen = strlen (value);
36 char *var = malloc (namelen + valuelen + 2);
41 sprintf (var, "%s=%s", name, value);
42 /* This leaks memory. This is unavoidable. */
49 int unsetenv (const char *name)
51 return setenv (name, "", 1);