/*
* Copyright (c) 2000-2002 Silicon Graphics, Inc. All Rights Reserved.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of version 2 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.
*
* Further, this software is distributed without any warranty that it is
* free of the rightful claim of any third person regarding infringement
* or the like. Any license provided herein, whether implied or
* otherwise, applies only to this software file. Patent licenses, if
* any, provided herein do not apply to combinations of this program with
* other software, or any other product whatsoever.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write the Free Software Foundation, Inc., 59
* Temple Place - Suite 330, Boston MA 02111-1307, USA.
*
* Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
* Mountain View, CA 94043, or:
*
* http://www.sgi.com
*
* For further information regarding this notice, see:
*
* http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/
*/
#ifndef __XFS_MOUNT_H__
#define __XFS_MOUNT_H__
typedef struct xfs_trans_reservations {
uint tr_write; /* extent alloc trans */
uint tr_itruncate; /* truncate trans */
uint tr_rename; /* rename trans */
uint tr_link; /* link trans */
uint tr_remove; /* unlink trans */
uint tr_symlink; /* symlink trans */
uint tr_create; /* create trans */
uint tr_mkdir; /* mkdir trans */
uint tr_ifree; /* inode free trans */
uint tr_ichange; /* inode update trans */
uint tr_growdata; /* fs data section grow trans */
uint tr_swrite; /* sync write inode trans */
uint tr_addafork; /* cvt inode to attributed trans */
uint tr_writeid; /* write setuid/setgid file */
uint tr_attrinval; /* attr fork buffer invalidation */
uint tr_attrset; /* set/create an attribute */
uint tr_attrrm; /* remove an attribute */
uint tr_clearagi; /* clear bad agi unlinked ino bucket */
uint tr_growrtalloc; /* grow realtime allocations */
uint tr_growrtzero; /* grow realtime zeroing */
uint tr_growrtfree; /* grow realtime freeing */
} xfs_trans_reservations_t;
#ifndef __KERNEL__
/*
* Moved here from xfs_ag.h to avoid reordering header files
*/
#define XFS_DADDR_TO_AGNO(mp,d) \
((xfs_agnumber_t)(XFS_BB_TO_FSBT(mp, d) / (mp)->m_sb.sb_agblocks))
#define XFS_DADDR_TO_AGBNO(mp,d) \
((xfs_agblock_t)(XFS_BB_TO_FSBT(mp, d) % (mp)->m_sb.sb_agblocks))
#else
struct cred;
struct vfs;
struct vnode;
struct xfs_mount_args;
struct xfs_ihash;
struct xfs_chash;
struct xfs_inode;
struct xfs_perag;
struct xfs_quotainfo;
struct xfs_iocore;
struct xfs_dio;
struct xfs_bmbt_irec;
struct xfs_bmap_free;
#define SPLDECL(s) unsigned long s
#define AIL_LOCK_T lock_t
#define AIL_LOCKINIT(x,y) spinlock_init(x,y)
#define AIL_LOCK_DESTROY(x) spinlock_destroy(x)
#define AIL_LOCK(mp,s) s=mutex_spinlock(&(mp)->m_ail_lock)
#define AIL_UNLOCK(mp,s) mutex_spinunlock(&(mp)->m_ail_lock, s)
/* Prototypes and functions for I/O core modularization, a vector
* of functions is used to indirect from xfs/cxfs independent code
* to the xfs/cxfs dependent code.
* The vector is placed in the mount structure so that we can
* minimize the number of memory indirections involved.
*/
typedef int (*xfs_dio_write_t)(struct xfs_dio *);
typedef int (*xfs_dio_read_t)(struct xfs_dio *);
typedef int (*xfs_strat_write_t)(struct xfs_iocore *, struct xfs_buf *);
typedef int (*xfs_bmapi_t)(struct xfs_trans *, void *,
xfs_fileoff_t, xfs_filblks_t, int,
xfs_fsblock_t *, xfs_extlen_t,
struct xfs_bmbt_irec *, int *,
struct xfs_bmap_free *);
typedef int (*xfs_bmap_eof_t)(void *, xfs_fileoff_t, int, int *);
typedef int (*xfs_rsync_t)(void *, int, xfs_off_t, xfs_off_t);
typedef uint (*xfs_lck_map_shared_t)(void *);
typedef void (*xfs_lock_t)(void *, uint);
typedef void (*xfs_lock_demote_t)(void *, uint);
typedef int (*xfs_lock_nowait_t)(void *, uint);
typedef void (*xfs_unlk_t)(void *, unsigned int);
typedef void (*xfs_chgtime_t)(void *, int);
typedef xfs_fsize_t (*xfs_size_t)(void *);
typedef xfs_fsize_t (*xfs_setsize_t)(void *, xfs_off_t);
typedef xfs_fsize_t (*xfs_lastbyte_t)(void *);
typedef struct xfs_ioops {
xfs_bmapi_t xfs_bmapi_func;
xfs_bmap_eof_t xfs_bmap_eof_func;
xfs_lock_t xfs_ilock;
xfs_lock_demote_t xfs_ilock_demote;
xfs_lock_nowait_t xfs_ilock_nowait;
xfs_unlk_t xfs_unlock;
xfs_chgtime_t xfs_chgtime;
xfs_size_t xfs_size_func;
xfs_lastbyte_t xfs_lastbyte;
} xfs_ioops_t;
#define XFS_BMAPI(mp, trans,io,bno,len,f,first,tot,mval,nmap,flist) \
(*(mp)->m_io_ops.xfs_bmapi_func) \
(trans,(io)->io_obj,bno,len,f,first,tot,mval,nmap,flist)
#define XFS_BMAP_EOF(mp, io, endoff, whichfork, eof) \
(*(mp)->m_io_ops.xfs_bmap_eof_func) \
((io)->io_obj, endoff, whichfork, eof)
#define XFS_ILOCK(mp, io, mode) \
(*(mp)->m_io_ops.xfs_ilock)((io)->io_obj, mode)
#define XFS_IUNLOCK(mp, io, mode) \
(*(mp)->m_io_ops.xfs_unlock)((io)->io_obj, mode)
#define XFS_ILOCK_DEMOTE(mp, io, mode) \
(*(mp)->m_io_ops.xfs_ilock_demote)((io)->io_obj, mode)
#define XFS_SIZE(mp, io) \
(*(mp)->m_io_ops.xfs_size_func)((io)->io_obj)
#define XFS_LASTBYTE(mp, io) \
(*(mp)->m_io_ops.xfs_lastbyte)((io)->io_obj)
typedef struct xfs_mount {
bhv_desc_t m_bhv; /* vfs xfs behavior */
xfs_tid_t m_tid; /* next unused tid for fs */
AIL_LOCK_T m_ail_lock; /* fs AIL mutex */
xfs_ail_entry_t m_ail; /* fs active log item list */
uint m_ail_gen; /* fs AIL generation count */
xfs_sb_t m_sb; /* copy of fs superblock */
lock_t m_sb_lock; /* sb counter mutex */
struct xfs_buf *m_sb_bp; /* buffer for superblock */
char *m_fsname; /* filesystem name */
int m_fsname_len; /* strlen of fs name */
int m_bsize; /* fs logical block size */
xfs_agnumber_t m_agfrotor; /* last ag where space found */
xfs_agnumber_t m_agirotor; /* last ag dir inode alloced */
xfs_agnumber_t m_maxagi; /* highest inode alloc group */
int m_ihsize; /* size of next field */
struct xfs_ihash *m_ihash; /* fs private inode hash table*/
struct xfs_inode *m_inodes; /* active inode list */
mutex_t m_ilock; /* inode list mutex */
uint m_ireclaims; /* count of calls to reclaim*/
uint m_readio_log; /* min read size log bytes */
uint m_readio_blocks; /* min read size blocks */
uint m_writeio_log; /* min write size log bytes */
uint m_writeio_blocks; /* min write size blocks */
void *m_log; /* log specific stuff */
int m_logbufs; /* number of log buffers */
int m_logbsize; /* size of each log buffer */
uint m_rsumlevels; /* rt summary levels */
uint m_rsumsize; /* size of rt summary, bytes */
struct xfs_inode *m_rbmip; /* pointer to bitmap inode */
struct xfs_inode *m_rsumip; /* pointer to summary inode */
struct xfs_inode *m_rootip; /* pointer to root directory */
struct xfs_quotainfo *m_quotainfo; /* disk quota information */
buftarg_t m_ddev_targ; /* ptr to data device */
buftarg_t m_logdev_targ; /* ptr to log device */
buftarg_t m_rtdev_targ; /* ptr to rt device */
buftarg_t *m_ddev_targp; /* saves taking the address */
#define m_rtdev_targp(m)(&(m)->m_rtdev_targ)
#define m_dev m_ddev_targ.dev
#define m_logdev m_logdev_targ.dev
#define m_rtdev m_rtdev_targ.dev
__uint8_t m_dircook_elog; /* log d-cookie entry bits */
__uint8_t m_blkbit_log; /* blocklog + NBBY */
__uint8_t m_blkbb_log; /* blocklog - BBSHIFT */
__uint8_t m_agno_log; /* log #ag's */
__uint8_t m_agino_log; /* #bits for agino in inum */
__uint8_t m_nreadaheads; /* #readahead buffers */
__uint16_t m_inode_cluster_size;/* min inode buf size */
uint m_blockmask; /* sb_blocksize-1 */
uint m_blockwsize; /* sb_blocksize in words */
uint m_blockwmask; /* blockwsize-1 */
uint m_alloc_mxr[2]; /* XFS_ALLOC_BLOCK_MAXRECS */
uint m_alloc_mnr[2]; /* XFS_ALLOC_BLOCK_MINRECS */
uint m_bmap_dmxr[2]; /* XFS_BMAP_BLOCK_DMAXRECS */
uint m_bmap_dmnr[2]; /* XFS_BMAP_BLOCK_DMINRECS */
uint m_inobt_mxr[2]; /* XFS_INOBT_BLOCK_MAXRECS */
uint m_inobt_mnr[2]; /* XFS_INOBT_BLOCK_MINRECS */
uint m_ag_maxlevels; /* XFS_AG_MAXLEVELS */
uint m_bm_maxlevels[2]; /* XFS_BM_MAXLEVELS */
uint m_in_maxlevels; /* XFS_IN_MAXLEVELS */
struct xfs_perag *m_perag; /* per-ag accounting info */
struct rw_semaphore m_peraglock; /* lock for m_perag (pointer) */
sema_t m_growlock; /* growfs mutex */
int m_fixedfsid[2]; /* unchanged for life of FS */
uint m_dmevmask; /* DMI events for this FS */
uint m_flags; /* global mount flags */
uint m_attroffset; /* inode attribute offset */
int m_da_node_ents; /* how many entries in danode */
int m_ialloc_inos; /* inodes in inode allocation */
int m_ialloc_blks; /* blocks in inode allocation */
int m_litino; /* size of inode union area */
int m_inoalign_mask;/* mask sb_inoalignmt if used */
uint m_qflags; /* quota status flags */
xfs_trans_reservations_t m_reservations;/* precomputed res values */
__uint64_t m_maxicount; /* maximum inode count */
__uint64_t m_resblks; /* total reserved blocks */
__uint64_t m_resblks_avail;/* available reserved blocks */
#if XFS_BIG_FILESYSTEMS
xfs_ino_t m_inoadd; /* add value for ino64_offset */
#endif
int m_dalign; /* stripe unit */
int m_swidth; /* stripe width */
int m_lstripemask; /* log stripe mask */
int m_sinoalign; /* stripe unit inode alignmnt */
int m_attr_magicpct;/* 37% of the blocksize */
int m_dir_magicpct; /* 37% of the dir blocksize */
__uint8_t m_mk_sharedro; /* mark shared ro on unmount */
__uint8_t m_inode_quiesce;/* call quiesce on new inodes.
field governed by m_ilock */
__uint8_t m_dirversion; /* 1 or 2 */
xfs_dirops_t m_dirops; /* table of dir funcs */
int m_dirblksize; /* directory block sz--bytes */
int m_dirblkfsbs; /* directory block sz--fsbs */
xfs_dablk_t m_dirdatablk; /* blockno of dir data v2 */
xfs_dablk_t m_dirleafblk; /* blockno of dir non-data v2 */
xfs_dablk_t m_dirfreeblk; /* blockno of dirfreeindex v2 */
int m_chsize; /* size of next field */
struct xfs_chash *m_chash; /* fs private inode per-cluster
* hash table */
struct xfs_ioops m_io_ops; /* vector of I/O ops */
struct xfs_expinfo *m_expinfo; /* info to export to other
cells. */
uint64_t m_shadow_pinmask;
/* which bits matter in rpc
log item pin masks */
uint m_cxfstype; /* mounted shared, etc. */
lock_t m_freeze_lock; /* Lock for m_frozen */
uint m_frozen; /* FS frozen for shutdown or
* snapshot */
sv_t m_wait_unfreeze;/* waiting to unfreeze */
atomic_t m_active_trans; /* number trans frozen */
struct timer_list m_sbdirty_timer;/* superblock dirty timer
* for nfs refcache */
} xfs_mount_t;
/*
* Flags for m_flags.
*/
#define XFS_MOUNT_WSYNC 0x00000001 /* for nfs - all metadata ops
must be synchronous except
for space allocations */
#if XFS_BIG_FILESYSTEMS
#define XFS_MOUNT_INO64 0x00000002
#endif
#define XFS_MOUNT_ROOTQCHECK 0x00000004
/* 0x00000008 -- currently unused */
#define XFS_MOUNT_FS_SHUTDOWN 0x00000010 /* atomic stop of all filesystem
operations, typically for
disk errors in metadata */
#define XFS_MOUNT_NOATIME 0x00000020 /* don't modify inode access
times on reads */
#define XFS_MOUNT_RETERR 0x00000040 /* return alignment errors to
user */
#define XFS_MOUNT_NOALIGN 0x00000080 /* turn off stripe alignment
allocations */
/* 0x00000100 -- currently unused */
#define XFS_MOUNT_REGISTERED 0x00000200 /* registered with cxfs master
cell logic */
#define XFS_MOUNT_NORECOVERY 0x00000400 /* no recovery - dirty fs */
#define XFS_MOUNT_SHARED 0x00000800 /* shared mount */
#define XFS_MOUNT_DFLT_IOSIZE 0x00001000 /* set default i/o size */
#define XFS_MOUNT_OSYNCISOSYNC 0x00002000 /* o_sync is REALLY o_sync */
/* osyncisdsync is now default*/
#define XFS_MOUNT_NOUUID 0x00004000 /* ignore uuid during mount */
#define XFS_MOUNT_32BITINODES 0x00008000 /* do not create inodes above
* 32 bits in size */
#define XFS_MOUNT_IRIXSGID 0x00010000 /* Irix-style sgid inheritance */
#define XFS_MOUNT_NOLOGFLUSH 0x00020000
/*
* Flags for m_cxfstype
*/
#define XFS_CXFS_NOT 0x00000001 /* local mount */
#define XFS_CXFS_SERVER 0x00000002 /* we're the CXFS server */
#define XFS_CXFS_CLIENT 0x00000004 /* We're a CXFS client */
#define XFS_CXFS_REC_ENABLED 0x00000008 /* recovery is enabled */
#define XFS_FORCED_SHUTDOWN(mp) ((mp)->m_flags & XFS_MOUNT_FS_SHUTDOWN)
/*
* Default minimum read and write sizes.
*/
#define XFS_READIO_LOG_LARGE 12
#define XFS_WRITEIO_LOG_LARGE 12
/*
* Default allocation size
*/
#define XFS_WRITE_IO_LOG 16
/*
* Max and min values for UIO and mount-option defined I/O sizes;
* min value can't be less than a page. Currently unused.
*/
#define XFS_MAX_IO_LOG 16 /* 64K */
#define XFS_MIN_IO_LOG PAGE_SHIFT
/*
* Synchronous read and write sizes. This should be
* better for NFSv2 wsync filesystems.
*/
#define XFS_WSYNC_READIO_LOG 15 /* 32K */
#define XFS_WSYNC_WRITEIO_LOG 14 /* 16K */
#define xfs_force_shutdown(m,f) _xfs_force_shutdown(m,f,__FILE__,__LINE__);
/*
* Flags sent to xfs_force_shutdown.
*/
#define XFS_METADATA_IO_ERROR 0x1
#define XFS_LOG_IO_ERROR 0x2
#define XFS_FORCE_UMOUNT 0x4
#define XFS_CORRUPT_INCORE 0x8 /* corrupt in-memory data structures */
#if CELL_CAPABLE
#define XFS_SHUTDOWN_REMOTE_REQ 0x10 /* shutdown req came from remote cell */
#endif
/*
* xflags for xfs_syncsub
*/
#define XFS_XSYNC_RELOC 0x01
/*
* Flags for xfs_mountfs
*/
#define XFS_MFSI_SECOND 0x01 /* Is a cxfs secondary mount -- skip */
/* stuff which should only be done */
/* once. */
#define XFS_MFSI_CLIENT 0x02 /* Is a client -- skip lots of stuff */
#define XFS_MFSI_NOUNLINK 0x08 /* Skip unlinked inode processing in */
/* log recovery */
/*
* Macros for getting from mount to vfs and back.
*/
#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_MTOVFS)
struct vfs *xfs_mtovfs(xfs_mount_t *mp);
#define XFS_MTOVFS(mp) xfs_mtovfs(mp)
#else
#define XFS_MTOVFS(mp) (bhvtovfs(&(mp)->m_bhv))
#endif
#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_BHVTOM)
xfs_mount_t *xfs_bhvtom(bhv_desc_t *bdp);
#define XFS_BHVTOM(bdp) xfs_bhvtom(bdp)
#else
#define XFS_BHVTOM(bdp) ((xfs_mount_t *)BHV_PDATA(bdp))
#endif
/*
* Moved here from xfs_ag.h to avoid reordering header files
*/
#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_DADDR_TO_AGNO)
xfs_agnumber_t xfs_daddr_to_agno(struct xfs_mount *mp, xfs_daddr_t d);
#define XFS_DADDR_TO_AGNO(mp,d) xfs_daddr_to_agno(mp,d)
#else
static inline xfs_agnumber_t XFS_DADDR_TO_AGNO(xfs_mount_t *mp, xfs_daddr_t d)
{
d = XFS_BB_TO_FSBT(mp, d);
do_div(d, mp->m_sb.sb_agblocks);
return (xfs_agnumber_t) d;
}
#endif
#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_DADDR_TO_AGBNO)
xfs_agblock_t xfs_daddr_to_agbno(struct xfs_mount *mp, xfs_daddr_t d);
#define XFS_DADDR_TO_AGBNO(mp,d) xfs_daddr_to_agbno(mp,d)
#else
static inline xfs_agblock_t XFS_DADDR_TO_AGBNO(xfs_mount_t *mp, xfs_daddr_t d)
{
d = XFS_BB_TO_FSBT(mp, d);
return (xfs_agblock_t) do_div(d, mp->m_sb.sb_agblocks);
}
#endif
/*
* This structure is for use by the xfs_mod_incore_sb_batch() routine.
*/
typedef struct xfs_mod_sb {
xfs_sb_field_t msb_field; /* Field to modify, see below */
int msb_delta; /* change to make to the specified field */
} xfs_mod_sb_t;
#define XFS_MOUNT_ILOCK(mp) mutex_lock(&((mp)->m_ilock), PINOD)
#define XFS_MOUNT_IUNLOCK(mp) mutex_unlock(&((mp)->m_ilock))
#define XFS_SB_LOCK(mp) mutex_spinlock(&(mp)->m_sb_lock)
#define XFS_SB_UNLOCK(mp,s) mutex_spinunlock(&(mp)->m_sb_lock,(s))
void xfs_mod_sb(xfs_trans_t *, __int64_t);
xfs_mount_t *xfs_mount_init(void);
void xfs_mount_free(xfs_mount_t *mp, int remove_bhv);
int xfs_mountfs(struct vfs *, xfs_mount_t *mp, dev_t, int);
int xfs_unmountfs(xfs_mount_t *, int, struct cred *);
void xfs_unmountfs_close(xfs_mount_t *, int, struct cred *);
int xfs_unmountfs_writesb(xfs_mount_t *);
int xfs_unmount_flush(xfs_mount_t *, int);
int xfs_mod_incore_sb(xfs_mount_t *, xfs_sb_field_t, int, int);
int xfs_mod_incore_sb_batch(xfs_mount_t *, xfs_mod_sb_t *, uint, int);
int xfs_readsb(xfs_mount_t *mp);
struct xfs_buf *xfs_getsb(xfs_mount_t *, int);
void xfs_freesb(xfs_mount_t *);
void _xfs_force_shutdown(struct xfs_mount *, int, char *, int);
int xfs_syncsub(xfs_mount_t *, int, int, int *);
void xfs_initialize_perag(xfs_mount_t *, int);
void xfs_xlatesb(void *, struct xfs_sb *, int, xfs_arch_t, __int64_t);
/*
* Flags for freeze operations.
*/
#define XFS_FREEZE_WRITE 1
#define XFS_FREEZE_TRANS 2
void xfs_start_freeze(xfs_mount_t *, int);
void xfs_finish_freeze(xfs_mount_t *);
void xfs_check_frozen(xfs_mount_t *, bhv_desc_t *, int);
extern struct vfsops xfs_vfsops;
#endif /* __KERNEL__ */
#endif /* __XFS_MOUNT_H__ */
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