/*
 * This file is part of the UCB release of Plan 9. It is subject to the license
 * terms in the LICENSE file found in the top-level directory of this
 * distribution and at http://akaros.cs.berkeley.edu/files/Plan9License. No
 * part of the UCB release of Plan 9, including this file, may be copied,
 * modified, propagated, or distributed except according to the terms contained
 * in the LICENSE file.
 */

#include <u.h>
#include <libc.h>

int
putenv(const char *name, const char *val)
{
	int f;
	char ename[100];
	int32_t s;

	if(strchr(name, '/') != nil)
		return -1;
	snprint(ename, sizeof ename, "/env/%s", name);
	if(strcmp(ename+5, name) != 0)
		return -1;
	f = create(ename, OWRITE, 0664);
	if(f < 0)
		return -1;
	s = strlen(val);
	if(write(f, val, s) != s){
		close(f);
		return -1;
	}
	close(f);
	return 0;
}