uclibc-ng/libc/stdlib/getenv.c

/* Copyright (C) 1995,1996 Robert de Bath <rdebath@cix.compulink.co.uk>
 * This file is part of the Linux-8086 C library and is distributed
 * under the GNU Library General Public License.
 */
#include <string.h>
#include <stdlib.h>
#include <malloc.h>

extern char **environ;

char *getenv(var)
const char *var;
{
	char **p;
	int len;

	len = strlen(var);

	if (!environ)
		return 0;

	for (p = environ; *p; p++) {
		if (memcmp(var, *p, len) == 0 && (*p)[len] == '=')
			return *p + len + 1;
	}
	return 0;
}