source: trunk/minix/lib/ansi/getenv.c@ 10

Last change on this file since 10 was 9, checked in by Mattia Monga, 13 years ago

Minix 3.1.2a

File size: 636 bytes
Line 
1/*
2 * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
3 * See the copyright notice in the ACK home directory, in the file "Copyright".
4 */
5/* $Header: /cvsup/minix/src/lib/ansi/getenv.c,v 1.1.1.1 2005/04/21 14:56:05 beng Exp $ */
6
7#include <stdlib.h>
8
9extern const char ***_penviron;
10
11char *
12getenv(const char *name)
13{
14 register const char **v = *_penviron;
15 register const char *p, *q;
16
17 if (v == NULL || name == NULL)
18 return (char *)NULL;
19 while ((p = *v++) != NULL) {
20 q = name;
21 while (*q && (*q == *p++))
22 q++;
23 if (*q || (*p != '='))
24 continue;
25 return (char *)p + 1;
26 }
27 return (char *)NULL;
28}
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