blob: 6d08da4fbb6a7ad02e949d5192316642e41c2485 [file] [log] [blame]
* 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
* 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 "libxfs_api_defs.h"
#include "platform_defs.h"
#include "xfs.h"
#include "list.h"
#include "hlist.h"
#include "cache.h"
#include "bitops.h"
#include "kmem.h"
#include "radix-tree.h"
#include "atomic.h"
#include "xfs_types.h"
#include "xfs_fs.h"
#include "xfs_arch.h"
#include "xfs_shared.h"
#include "xfs_format.h"
#include "xfs_log_format.h"
#include "xfs_quota_defs.h"
#include "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_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 "libxfs_io.h"
#include "xfs_bit.h"
#include "xfs_sb.h"
#include "xfs_mount.h"
#include "xfs_defer.h"
#include "xfs_da_format.h"
#include "xfs_da_btree.h"
#include "xfs_dir2.h"
#include "xfs_bmap_btree.h"
#include "xfs_alloc_btree.h"
#include "xfs_ialloc_btree.h"
#include "xfs_attr_sf.h"
#include "xfs_inode_fork.h"
#include "xfs_inode_buf.h"
#include "xfs_inode.h"
#include "xfs_alloc.h"
#include "xfs_btree.h"
#include "xfs_btree_trace.h"
#include "xfs_bmap.h"
#include "xfs_trace.h"
#include "xfs_trans.h"
#include "xfs_rmap_btree.h"
#include "xfs_rmap.h"
#include "xfs_refcount_btree.h"
#include "xfs_refcount.h"
#ifndef ARRAY_SIZE
#define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
#define XFS_SUPER_MAGIC 0x58465342
#define xfs_isset(a,i) ((a)[(i)/(sizeof(*(a))*NBBY)] & (1ULL<<((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 xfs_lsn_t libxfs_max_lsn;
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_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 char *(libxfs_get_block_t)(char *, int, void *);
* Helpers to clear the log to a particular log cycle.
extern int libxfs_log_clear(struct xfs_buftarg *, char *, xfs_daddr_t,
uint, uuid_t *, int, int, int, int, bool);
extern int libxfs_log_header(char *, uuid_t *, int, int, int, xfs_lsn_t,
xfs_lsn_t, 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 */
extern void cmn_err(int, char *, ...);
extern int libxfs_nproc(void);
extern unsigned long libxfs_physmem(void); /* in kilobytes */
#include "xfs_ialloc.h"
#include "xfs_attr_leaf.h"
#include "xfs_attr_remote.h"
#include "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 bool
struct xfs_inobt_rec *rp,
int offset)
int spshift;
uint16_t holemask;
holemask = be16_to_cpu(rp->ir_u.sp.ir_holemask);
spshift = offset / XFS_INODES_PER_HOLEMASK_BIT;
if ((1 << spshift) & holemask)
return true;
return false;
static inline void
struct xfs_bmbt_rec *rec,
struct xfs_bmbt_irec *irec)
uint64_t l0 = get_unaligned_be64(&rec->l0);
uint64_t l1 = get_unaligned_be64(&rec->l1);
irec->br_startoff = (l0 & xfs_mask64lo(64 - BMBT_EXNTFLAG_BITLEN)) >> 9;
irec->br_startblock = ((l0 & xfs_mask64lo(9)) << 43) | (l1 >> 21);
irec->br_blockcount = l1 & xfs_mask64lo(21);
if (l0 >> (64 - BMBT_EXNTFLAG_BITLEN))
irec->br_state = XFS_EXT_UNWRITTEN;
irec->br_state = XFS_EXT_NORM;
/* 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__ */