include/libxfs.h

/*
 * Copyright (c) 2000-2005 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 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 General Public License for more details.
 *
 * You should have received a copy of the GNU 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 __LIBXFS_H__
#define __LIBXFS_H__

#include <xfs/libxfs_api_defs.h>
#include <xfs/platform_defs.h>

#include <xfs/list.h>
#include <xfs/hlist.h>
#include <xfs/cache.h>
#include <xfs/bitops.h>
#include <xfs/kmem.h>
#include <xfs/radix-tree.h>
#include <xfs/swab.h>
#include <xfs/atomic.h>

#include <xfs/xfs_types.h>
#include <xfs/xfs_fs.h>
#include <xfs/xfs_arch.h>

#include <xfs/xfs_shared.h>
#include <xfs/xfs_format.h>
#include <xfs/xfs_log_format.h>
#include <xfs/xfs_quota_defs.h>
#include <xfs/xfs_trans_resv.h>


/* CRC stuff, buffer API dependent on it */
extern uint32_t crc32_le(uint32_t crc, unsigned char const *p, size_t len);
extern uint32_t crc32c_le(uint32_t crc, unsigned char const *p, size_t len);

#define crc32(c,p,l)	crc32_le((c),(unsigned char const *)(p),(l))
#define crc32c(c,p,l)	crc32c_le((c),(unsigned char const *)(p),(l))

#include <xfs/xfs_cksum.h>

/*
 * This mirrors the kernel include for xfs_buf.h - it's implicitly included in
 * every files via a similar include in the kernel xfs_linux.h.
 */
#include <xfs/libxfs_io.h>

#include <xfs/xfs_bit.h>
#include <xfs/xfs_sb.h>
#include <xfs/xfs_mount.h>
#include <xfs/xfs_da_format.h>
#include <xfs/xfs_da_btree.h>
#include <xfs/xfs_dir2.h>
#include <xfs/xfs_bmap_btree.h>
#include <xfs/xfs_alloc_btree.h>
#include <xfs/xfs_ialloc_btree.h>
#include <xfs/xfs_attr_sf.h>
#include <xfs/xfs_inode_fork.h>
#include <xfs/xfs_inode_buf.h>
#include <xfs/xfs_inode.h>
#include <xfs/xfs_alloc.h>
#include <xfs/xfs_btree.h>
#include <xfs/xfs_btree_trace.h>
#include <xfs/xfs_bmap.h>
#include <xfs/xfs_trace.h>
#include <xfs/xfs_trans.h>

struct xfs_mount;
struct xfs_trans;

#ifndef ARRAY_SIZE
#define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
#endif

#ifndef XFS_SUPER_MAGIC
#define XFS_SUPER_MAGIC 0x58465342
#endif

#define xfs_isset(a,i)	((a)[(i)/(sizeof((a))*NBBY)] & (1<<((i)%(sizeof((a))*NBBY))))

/*
 * Argument structure for libxfs_init().
 */
typedef struct {
				/* input parameters */
	char            *volname;       /* pathname of volume */
	char            *dname;         /* pathname of data "subvolume" */
	char            *logname;       /* pathname of log "subvolume" */
	char            *rtname;        /* pathname of realtime "subvolume" */
	int             isreadonly;     /* filesystem is only read in applic */
	int             isdirect;       /* we can attempt to use direct I/O */
	int             disfile;        /* data "subvolume" is a regular file */
	int             dcreat;         /* try to create data subvolume */
	int             lisfile;        /* log "subvolume" is a regular file */
	int             lcreat;         /* try to create log subvolume */
	int             risfile;        /* realtime "subvolume" is a reg file */
	int             rcreat;         /* try to create realtime subvolume */
	int		setblksize;	/* attempt to set device blksize */
	int		usebuflock;	/* lock xfs_buf_t's - for MT usage */
				/* output results */
	dev_t           ddev;           /* device for data subvolume */
	dev_t           logdev;         /* device for log subvolume */
	dev_t           rtdev;          /* device for realtime subvolume */
	long long       dsize;          /* size of data subvolume (BBs) */
	long long       logBBsize;      /* size of log subvolume (BBs) */
					/* (blocks allocated for use as
					 * log is stored in mount structure) */
	long long       logBBstart;     /* start block of log subvolume (BBs) */
	long long       rtsize;         /* size of realtime subvolume (BBs) */
	int		dbsize;		/* data subvolume device blksize */
	int		lbsize;		/* log subvolume device blksize */
	int		rtbsize;	/* realtime subvolume device blksize */
	int             dfd;            /* data subvolume file descriptor */
	int             logfd;          /* log subvolume file descriptor */
	int             rtfd;           /* realtime subvolume file descriptor */
	int		icache_flags;	/* cache init flags */
	int		bcache_flags;	/* cache init flags */
} libxfs_init_t;

#define LIBXFS_EXIT_ON_FAILURE	0x0001	/* exit the program if a call fails */
#define LIBXFS_ISREADONLY	0x0002	/* disallow all mounted filesystems */
#define LIBXFS_ISINACTIVE	0x0004	/* allow mounted only if mounted ro */
#define LIBXFS_DANGEROUSLY	0x0008	/* repairing a device mounted ro    */
#define LIBXFS_EXCLUSIVELY	0x0010	/* disallow other accesses (O_EXCL) */
#define LIBXFS_DIRECT		0x0020	/* can use direct I/O, not buffered */

extern char	*progname;
extern int	libxfs_init (libxfs_init_t *);
extern void	libxfs_destroy (void);
extern int	libxfs_device_to_fd (dev_t);
extern dev_t	libxfs_device_open (char *, int, int, int);
extern void	libxfs_device_zero(struct xfs_buftarg *, xfs_daddr_t, uint);
extern void	libxfs_device_close (dev_t);
extern int	libxfs_device_alignment (void);
extern void	libxfs_report(FILE *);
extern void	platform_findsizes(char *path, int fd, long long *sz, int *bsz);
extern int	platform_nproc(void);

/* check or write log footer: specify device, log size in blocks & uuid */
typedef xfs_caddr_t (libxfs_get_block_t)(xfs_caddr_t, int, void *);

extern int	libxfs_log_clear (struct xfs_buftarg *, xfs_daddr_t, uint,
				uuid_t *, int, int, int);
extern int	libxfs_log_header (xfs_caddr_t, uuid_t *, int, int, int,
				libxfs_get_block_t *, void *);



/* Shared utility routines */
extern unsigned int	libxfs_log2_roundup(unsigned int i);

extern int	libxfs_alloc_file_space (struct xfs_inode *, xfs_off_t,
				xfs_off_t, int, int);

extern void 	libxfs_fs_repair_cmn_err(int, struct xfs_mount *, char *, ...);
extern void	libxfs_fs_cmn_err(int, struct xfs_mount *, char *, ...);

/* XXX: this is messy and needs fixing */
#ifndef __LIBXFS_INTERNAL_XFS_H__
extern void cmn_err(int, char *, ...);
enum ce { CE_DEBUG, CE_CONT, CE_NOTE, CE_WARN, CE_ALERT, CE_PANIC };
#endif


extern int		libxfs_nproc(void);
extern unsigned long	libxfs_physmem(void);	/* in kilobytes */

#include <xfs/xfs_ialloc.h>

#include <xfs/xfs_attr_leaf.h>
#include <xfs/xfs_attr_remote.h>
#include <xfs/xfs_trans_space.h>

#define XFS_INOBT_IS_FREE_DISK(rp,i)		\
			((be64_to_cpu((rp)->ir_free) & XFS_INOBT_MASK(i)) != 0)

static inline void
libxfs_bmbt_disk_get_all(
	struct xfs_bmbt_rec	*rp,
	struct xfs_bmbt_irec	*irec)
{
	struct xfs_bmbt_rec_host hrec;

	hrec.l0 = be64_to_cpu(rp->l0);
	hrec.l1 = be64_to_cpu(rp->l1);
	libxfs_bmbt_get_all(&hrec, irec);
}

/* XXX: this is clearly a bug - a shared header needs to export this */
/* xfs_rtalloc.c */
int libxfs_rtfree_extent(struct xfs_trans *, xfs_rtblock_t, xfs_extlen_t);

/* XXX: need parts of xfs_attr.h in userspace */
#define LIBXFS_ATTR_ROOT	0x0002	/* use attrs in root namespace */
#define LIBXFS_ATTR_SECURE	0x0008	/* use attrs in security namespace */
#define LIBXFS_ATTR_CREATE	0x0010	/* create, but fail if attr exists */
#define LIBXFS_ATTR_REPLACE	0x0020	/* set, but fail if attr not exists */

int xfs_attr_remove(struct xfs_inode *dp, const unsigned char *name, int flags);
int xfs_attr_set(struct xfs_inode *dp, const unsigned char *name,
		 unsigned char *value, int valuelen, int flags);


#endif	/* __LIBXFS_H__ */