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/* getenv.c for uClibc
Erik Andersen <andersen@codepoet.org>
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 <unistd.h>
/* IEEE Std 1003.1-2001 says getenv need not be thread safe, so
* don't bother locking access to __environ */
char *getenv(const char *var)
{
int len;
char **ep;
if (!(ep=__environ))
return NULL;
len = __strlen(var);
while(*ep) {
if (__memcmp(var, *ep, len) == 0 && (*ep)[len] == '=') {
return *ep + len + 1;
}
ep++;
}
return NULL;
}
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