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/* getenv.c for uClibc
* Copyright (C) 2000-2006 Erik Andersen <andersen@uclibc.org>
*
* Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
*/
#include <string.h>
#include <unistd.h>
#include <stdlib.h>
libc_hidden_proto(getenv)
libc_hidden_proto(memcmp)
libc_hidden_proto(strlen)
libc_hidden_proto(__environ)
/* 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;
}
libc_hidden_def(getenv)
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