/*-

 * Copyright (c) 2003-2007 Tim Kientzle

 * All rights reserved.

 *

 * 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(S) ``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(S) 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 "archive_platform.h"

__FBSDID("$FreeBSD: head/lib/libarchive/archive_entry_stat.c 201100 2009-12-28 03:05:31Z kientzle $");

#ifdef HAVE_SYS_STAT_H

#include <sys/stat.h>

#endif

#ifdef HAVE_STDLIB_H

#include <stdlib.h>

#endif

#include "archive_entry.h"

#include "archive_entry_private.h"

const struct stat *

archive_entry_stat(struct archive_entry *entry)

{

	struct stat *st;

	if (entry->stat == NULL) {

		entry->stat = calloc(1, sizeof(*st));

		if (entry->stat == NULL)

			return (NULL);

		entry->stat_valid = 0;

	}

	/*

	 * If none of the underlying fields have been changed, we

	 * don't need to regenerate.  In theory, we could use a bitmap

	 * here to flag only those items that have changed, but the

	 * extra complexity probably isn't worth it.  It will be very

	 * rare for anyone to change just one field then request a new

	 * stat structure.

	 */

	if (entry->stat_valid)

		return (entry->stat);

	st = entry->stat;

	/*

	 * Use the public interfaces to extract items, so that

	 * the appropriate conversions get invoked.

	 */

	st->st_atime = archive_entry_atime(entry);

#if HAVE_STRUCT_STAT_ST_BIRTHTIME

	st->st_birthtime = archive_entry_birthtime(entry);

#endif

	st->st_ctime = archive_entry_ctime(entry);

	st->st_mtime = archive_entry_mtime(entry);

	st->st_dev = archive_entry_dev(entry);

	st->st_gid = (gid_t)archive_entry_gid(entry);

	st->st_uid = (uid_t)archive_entry_uid(entry);

	st->st_ino = (ino_t)archive_entry_ino64(entry);

	st->st_nlink = archive_entry_nlink(entry);

	st->st_rdev = archive_entry_rdev(entry);

	st->st_size = (off_t)archive_entry_size(entry);

	st->st_mode = archive_entry_mode(entry);

	/*

	 * On systems that support high-res timestamps, copy that

	 * information into struct stat.

	 */

#if HAVE_STRUCT_STAT_ST_MTIMESPEC_TV_NSEC

	st->st_atimespec.tv_nsec = archive_entry_atime_nsec(entry);

	st->st_ctimespec.tv_nsec = archive_entry_ctime_nsec(entry);

	st->st_mtimespec.tv_nsec = archive_entry_mtime_nsec(entry);

#elif HAVE_STRUCT_STAT_ST_MTIM_TV_NSEC

	st->st_atim.tv_nsec = archive_entry_atime_nsec(entry);

	st->st_ctim.tv_nsec = archive_entry_ctime_nsec(entry);

	st->st_mtim.tv_nsec = archive_entry_mtime_nsec(entry);

#elif HAVE_STRUCT_STAT_ST_MTIME_N

	st->st_atime_n = archive_entry_atime_nsec(entry);

	st->st_ctime_n = archive_entry_ctime_nsec(entry);

	st->st_mtime_n = archive_entry_mtime_nsec(entry);

#elif HAVE_STRUCT_STAT_ST_UMTIME

	st->st_uatime = archive_entry_atime_nsec(entry) / 1000;

	st->st_uctime = archive_entry_ctime_nsec(entry) / 1000;

	st->st_umtime = archive_entry_mtime_nsec(entry) / 1000;

#elif HAVE_STRUCT_STAT_ST_MTIME_USEC

	st->st_atime_usec = archive_entry_atime_nsec(entry) / 1000;

	st->st_ctime_usec = archive_entry_ctime_nsec(entry) / 1000;

	st->st_mtime_usec = archive_entry_mtime_nsec(entry) / 1000;

#endif

#if HAVE_STRUCT_STAT_ST_BIRTHTIMESPEC_TV_NSEC

	st->st_birthtimespec.tv_nsec = archive_entry_birthtime_nsec(entry);

#endif

	/*

	 * TODO: On Linux, store 32 or 64 here depending on whether

	 * the cached stat structure is a stat32 or a stat64.  This

	 * will allow us to support both variants interchangeably.

	 */

	entry->stat_valid = 1;

	return (st);

}