1 /* getenv.c for uClibc
2  * Copyright (C) 2000-2006 Erik Andersen <andersen@uclibc.org>
3  *
4  * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
5  */
6 
7 #include <string.h>
8 #include <unistd.h>
9 #include <stdlib.h>
10 
11 
12 /* IEEE Std 1003.1-2001 says getenv need not be thread safe, so
13  * don't bother locking access to __environ */
getenv(const char * var)14 char *getenv(const char *var)
15 {
16     int len;
17     char **ep;
18 
19     if (!(ep=__environ))
20 	return NULL;
21     len = strlen(var);
22     while(*ep) {
23 	if (memcmp(var, *ep, len) == 0 && (*ep)[len] == '=') {
24 	    return *ep + len + 1;
25 	}
26 	ep++;
27     }
28     return NULL;
29 }
30 libc_hidden_def(getenv)
31