/* $Id: fsops.c,v 1.6 2009/05/08 10:01:17 imil Exp $ */

/*
 * Copyright (c) 2009 The NetBSD Foundation, Inc.
 * All rights reserved.
 *
 * This code is derived from software contributed to The NetBSD Foundation
 * by Emile "iMil" Heitor <imil@NetBSD.org> .
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 */

#include "pkg_dry.h"
#include <dirent.h>

int
fs_has_room(const char *dir, int64_t size)
{
	struct statvfs	fsbuf;
	int64_t			freesize;

	if (statvfs(dir, &fsbuf) < 0)
		err(EXIT_FAILURE, "Can't statvfs() `%s'", dir);

	freesize = (int64_t)fsbuf.f_bavail  * (int64_t)fsbuf.f_frsize;

	if (freesize > size)
		return 1;

	return 0;
}

void
clean_cache()
{
	DIR				*dp;
	struct dirent	*ep;
	char			pkgpath[BUFSIZ];
     
	if ((dp = opendir(pkg_dry_cache)) != NULL) {
		while ((ep = readdir(dp)) != NULL)
			if (ep->d_name[0] != '.') {
				snprintf(pkgpath, BUFSIZ, "%s/%s", pkg_dry_cache, ep->d_name);
				if (unlink(pkgpath) < 0)
					err(EXIT_FAILURE, "could not delete %s", pkgpath);
			}
		closedir(dp);
	} else
		err(EXIT_FAILURE, "couldn't open %s", pkg_dry_cache);	
}

void
create_dirs()
{
	/* create database repository */
	mkdir(PKG_DRY_DB, 0755);
	/* create cache repository */
	mkdir(pkg_dry_cache, 0755);
}