/*  * 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>#include "ssh2.h" voidfreeptr(void **vpp){	char **cpp; 	cpp = vpp;	free(*cpp);	*cpp = nil;} intreadfile(char *file, char *buf, int size){	int n, fd; 	fd = open(file, OREAD);	if (fd < 0)		return -1;	n = readn(fd, buf, size - 1);	if (n < 0)		buf[0] = '\0';	else		buf[n] = '\0';	close(fd);	return n;}