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gnupg/util/setenv.c
David Shaw a3ba17e09e * mkdtemp.c: New (moved from g10/), setenv.c: New, unsetenv.c: New.
* Makefile.am: Include @LIBOBJS@ for replacement functions.
2004-02-20 15:10:36 +00:00

52 lines
1.4 KiB
C

/* setenv.c - libc replacement function
* Copyright (C) 2004 Free Software Foundation, Inc.
*
* This file is part of GnuPG.
*
* GnuPG is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* GnuPG 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
*/
#include <config.h>
#include <string.h>
#include <errno.h>
#include <stdlib.h>
/* Implement setenv in terms of putenv. Alas, the nature of setenv is
to be leaky... */
int
setenv(const char *name, const char *value, int overwrite)
{
char *item=NULL;
if (name == NULL || *name == '\0' || strchr (name, '=') != NULL)
{
errno=EINVAL;
return -1;
}
item=malloc(strlen(name)+1+strlen(value)+1);
if(!item)
{
errno=ENOMEM;
return -1;
}
strcpy(item,name);
strcat(item,"=");
strcat(item,value);
return putenv(item);
}