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Backport xfs_repair from the xfs-cmds tree to IRIX to aid parallel repair merging later.
Merge of master-melb:xfs-cmds:25838a by kenmcd.

/*
 * Copyright (c) 2004-2005 Silicon Graphics, Inc.
 * All Rights Reserved.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public License
 * as published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it would be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program; if not, write the Free Software Foundation,
 * Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 */
#ifndef __XFS_FREEBSD_H__
#define __XFS_FREEBSD_H__

#include <sys/stat.h>
#include <sys/param.h>
#include <sys/ioccom.h>
#include <sys/mount.h>
#include <ctype.h>
#include <libgen.h>
#include <paths.h>
#include <uuid.h>

#include <machine/endian.h>

/* FreeBSD file API is 64-bit aware */
#define	fstat64		fstat
#define	ftruncate64	ftruncate
#define lseek64		lseek
#define	stat64		stat
#define	pwrite64	pwrite
#define	pread64		pread
#define	fdatasync	fsync
#define memalign(a,size)	valloc(size)

#define constpp	char * const *

#define EFSCORRUPTED	990	/* Filesystem is corrupted */

typedef off_t		xfs_off_t;
typedef off_t		off64_t;
typedef __uint64_t	xfs_ino_t;
typedef __uint32_t	xfs_dev_t;
typedef __int64_t	xfs_daddr_t;
typedef char*		xfs_caddr_t;
typedef off_t		loff_t;

#ifndef	_UCHAR_T_DEFINED
typedef unsigned char	uchar_t;
#define	_UCHAR_T_DEFINED	1
#endif
typedef enum { B_FALSE,B_TRUE }	boolean_t;

#define	O_LARGEFILE	0

#define HAVE_FID	1
#define HAVE_SWABMACROS	1
#define INT_SWAP16(type,var) ((typeof(type))(__bswap16((__u16)(var))))
#define INT_SWAP32(type,var) ((typeof(type))(__bswap32((__u32)(var))))
#define INT_SWAP64(type,var) ((typeof(type))(__bswap64((__u64)(var))))

static __inline__ int xfsctl(const char *path, int fd, int cmd, void *p)
{
	return ioctl(fd, cmd, p);
}

static __inline__ int platform_test_xfs_fd(int fd)
{
	struct statfs buf;
	if (fstatfs(fd, &buf) < 0)
		return 0;
	return strcpy(buf.f_fstypename, "xfs") == 0;
}

static __inline__ int platform_test_xfs_path(const char *path)
{
	struct statfs buf;
	if (statfs(path, &buf) < 0)
		return 0;
	return strcpy(buf.f_fstypename, "xfs") == 0;
}

static __inline__ int platform_fstatfs(int fd, struct statfs *buf)
{
	return fstatfs(fd, buf);
}

static __inline__ void platform_getoptreset(void)
{
	extern int optind;
	optind = 0;
}

static __inline__ int platform_uuid_compare(uuid_t *uu1, uuid_t *uu2)
{
	return uuid_compare(uu1, uu2, NULL);
}

static __inline__ void platform_uuid_unparse(uuid_t *uu, char **buffer)
{
	uint32_t status;
	char *s;
	uuid_to_string(uu, &s, &status);
	if (status == uuid_s_ok)
		strcpy(*buffer, s);
	else *buffer[0] = '\0';
	free(s);
}

static __inline__ int platform_uuid_parse(char *buffer, uuid_t *uu)
{
	uint32_t status;
	uuid_from_string(buffer, uu, &status);
	return (status == uuid_s_ok);
}

static __inline__ int platform_uuid_is_null(uuid_t *uu)
{
	return uuid_is_nil(uu, NULL);
}

static __inline__ void platform_uuid_generate(uuid_t *uu)
{
	uuid_create(uu, NULL);
}

static __inline__ void platform_uuid_clear(uuid_t *uu)
{
	uuid_create_nil(uu, NULL);
}

static __inline__ void platform_uuid_copy(uuid_t *dst, uuid_t *src)
{
	memcpy(dst, src, sizeof(uuid_t));
}

#endif	/* __XFS_FREEBSD_H__ */