/*
 * Copyright (c) 2004-2006 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 <mntent.h>

#include <sys/endian.h>
#define __BYTE_ORDER	BYTE_ORDER
#define __BIG_ENDIAN	BIG_ENDIAN
#define __LITTLE_ENDIAN	LITTLE_ENDIAN

/* FreeBSD file API is 64-bit aware */
#define fdatasync	fsync
#define memalign(a,sz)	valloc(sz)

#define EFSCORRUPTED	990	/* Filesystem is corrupted */
#define EFSBADCRC	991	/* Bad CRC detected */

typedef unsigned char		__u8;
typedef signed char		__s8;
typedef unsigned short		__u16;
typedef signed short		__s16;
typedef unsigned int		__u32;
typedef signed int		__s32;
typedef unsigned long long int	__u64;
typedef signed long long int	__s64;

typedef off_t		xfs_off_t;
typedef uint64_t	xfs_ino_t;
typedef uint32_t	xfs_dev_t;
typedef int64_t		xfs_daddr_t;
typedef __u32		xfs_nlink_t;

#define	O_LARGEFILE	0

#define HAVE_FID	1

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 strncmp(buf.f_fstypename, "xfs", 4) == 0;
}

static __inline__ int platform_test_xfs_path(const char *path)
{
	struct statfs buf;
	if (statfs(path, &buf) < 0)
		return 0;
	return strncmp(buf.f_fstypename, "xfs", 4) == 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));
}

static __inline__ int
platform_discard_blocks(int fd, uint64_t start, uint64_t len)
{
	return 0;
}

/**
 * Abstraction of mountpoints.
 */
struct mntent_cursor {
	FILE *mtabp;
};

static inline int platform_mntent_open(struct mntent_cursor * cursor, char *mtab)
{
	cursor->mtabp = setmntent(mtab, "r");
	if (!cursor->mtabp) {
		fprintf(stderr, "Error: cannot read %s\n", mtab);
		return 1;
	}
	return 0;
}

static inline  struct mntent * platform_mntent_next(struct mntent_cursor * cursor)
{
	return getmntent(cursor->mtabp);
}

static inline void platform_mntent_close(struct mntent_cursor * cursor)
{
	endmntent(cursor->mtabp);
}

/* check whether we have to define FS_IOC_FS[GS]ETXATTR ourselves */
#ifndef HAVE_FSXATTR
struct fsxattr {
	__u32		fsx_xflags;	/* xflags field value (get/set) */
	__u32		fsx_extsize;	/* extsize field value (get/set)*/
	__u32		fsx_nextents;	/* nextents field value (get)	*/
	__u32		fsx_projid;	/* project identifier (get/set) */
	__u32		fsx_cowextsize;	/* cow extsize field value (get/set) */
	unsigned char	fsx_pad[8];
};

/*
 * Flags for the fsx_xflags field
 */
#define FS_XFLAG_REALTIME	0x00000001	/* data in realtime volume */
#define FS_XFLAG_PREALLOC	0x00000002	/* preallocated file extents */
#define FS_XFLAG_IMMUTABLE	0x00000008	/* file cannot be modified */
#define FS_XFLAG_APPEND		0x00000010	/* all writes append */
#define FS_XFLAG_SYNC		0x00000020	/* all writes synchronous */
#define FS_XFLAG_NOATIME	0x00000040	/* do not update access time */
#define FS_XFLAG_NODUMP		0x00000080	/* do not include in backups */
#define FS_XFLAG_RTINHERIT	0x00000100	/* create with rt bit set */
#define FS_XFLAG_PROJINHERIT	0x00000200	/* create with parents projid */
#define FS_XFLAG_NOSYMLINKS	0x00000400	/* disallow symlink creation */
#define FS_XFLAG_EXTSIZE	0x00000800	/* extent size allocator hint */
#define FS_XFLAG_EXTSZINHERIT	0x00001000	/* inherit inode extent size */
#define FS_XFLAG_NODEFRAG	0x00002000	/* do not defragment */
#define FS_XFLAG_FILESTREAM	0x00004000	/* use filestream allocator */
#define FS_XFLAG_DAX		0x00008000	/* use DAX for IO */
#define FS_XFLAG_HASATTR	0x80000000	/* no DIFLAG for this	*/

#define FS_IOC_FSGETXATTR     _IOR ('X', 31, struct fsxattr)
#define FS_IOC_FSSETXATTR     _IOW ('X', 32, struct fsxattr)

#endif

#ifndef FS_XFLAG_COWEXTSIZE
#define FS_XFLAG_COWEXTSIZE	0x00010000	/* CoW extent size allocator hint */
#endif

#endif	/* __XFS_FREEBSD_H__ */