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freebsd-dev/sys/gnu/fs/xfs/FreeBSD/xfs_vfs.h
Craig Rodrigues 331b6cc0ea Sync XFS for FreeBSD tree with newer changes from SGI XFS for Linux tree. 
Improve support for writing to XFS partitions.

Work done by:	Russell Cattelan <cattelan at xfs dot org>
2006-06-09 06:04:06 +00:00

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/*
* Copyright (c) 2000-2003 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_VFS_H__
#define __XFS_VFS_H__
#include <sys/mount.h>
#include "xfs_fs.h"
struct fid;
struct cred;
struct xfs_vnode;
struct statfs;
struct sbuf;
struct xfs_mount_args;
struct mount;
typedef struct statfs xfs_statfs_t;
typedef struct xfs_vfs {
u_int vfs_flag; /* flags */
xfs_fsid_t vfs_fsid; /* file system ID */
xfs_fsid_t *vfs_altfsid; /* An ID fixed for life of FS */
bhv_head_t vfs_bh; /* head of vfs behavior chain */
struct mount *vfs_mp; /* FreeBSD mount struct */
} xfs_vfs_t;
#define MNTTOXVFS(mp) ((struct xfs_vfs*)(mp)->mnt_data)
#define XVFSTOMNT(vfs) ((vfs)->vfs_mp)
#define vfs_fbhv vfs_bh.bh_first /* 1st on vfs behavior chain */
#define bhvtovfs(bdp) ( (struct xfs_vfs *)BHV_VOBJ(bdp) )
#define bhvtovfsops(bdp) ( (struct xvfsops *)BHV_OPS(bdp) )
#define VFS_BHVHEAD(vfs) ( &(vfs)->vfs_bh )
#define VFS_REMOVEBHV(vfs, bdp) ( bhv_remove(VFS_BHVHEAD(vfs), bdp) )
#define VFS_POSITION_BASE BHV_POSITION_BASE /* chain bottom */
#define VFS_POSITION_TOP BHV_POSITION_TOP /* chain top */
#define VFS_POSITION_INVALID BHV_POSITION_INVALID /* invalid pos. num */
typedef enum {
VFS_BHV_UNKNOWN, /* not specified */
VFS_BHV_XFS, /* xfs */
VFS_BHV_DM, /* data migration */
VFS_BHV_QM, /* quota manager */
VFS_BHV_IO, /* IO path */
VFS_BHV_END /* housekeeping end-of-range */
} vfs_bhv_t;
#define VFS_POSITION_XFS (BHV_POSITION_BASE)
#define VFS_POSITION_DM (VFS_POSITION_BASE+10)
#define VFS_POSITION_QM (VFS_POSITION_BASE+20)
#define VFS_POSITION_IO (VFS_POSITION_BASE+30)
#define VFS_RDONLY 0x0001 /* read-only vfs */
#define VFS_GRPID 0x0002 /* group-ID assigned from directory */
#define VFS_DMI 0x0004 /* filesystem has the DMI enabled */
#define VFS_32BITINODES 0x0008 /* do not use inums above 32 bits */
#define VFS_END 0x0008 /* max flag */
#define SYNC_ATTR 0x0001 /* sync attributes */
#define SYNC_CLOSE 0x0002 /* close file system down */
#define SYNC_DELWRI 0x0004 /* look at delayed writes */
#define SYNC_WAIT 0x0008 /* wait for i/o to complete */
#define SYNC_BDFLUSH 0x0010 /* BDFLUSH is calling -- don't block */
#define SYNC_FSDATA 0x0020 /* flush fs data (e.g. superblocks) */
#define SYNC_REFCACHE 0x0040 /* prune some of the nfs ref cache */
#define SYNC_REMOUNT 0x0080 /* remount readonly, no dummy LRs */
#define SYNC_QUIESCE 0x0100 /* quiesce filesystem for a snapshot */
#define IGET_NOALLOC 0x0001 /* vfs_get_inode may return NULL */
typedef int (*xvfs_mount_t)(bhv_desc_t *,
struct xfs_mount_args *, struct cred *);
typedef int (*xvfs_parseargs_t)(bhv_desc_t *, char *,
struct xfs_mount_args *, int);
typedef int (*xvfs_showargs_t)(bhv_desc_t *, struct sbuf *);
typedef int (*xvfs_unmount_t)(bhv_desc_t *, int, struct cred *);
typedef int (*xvfs_mntupdate_t)(bhv_desc_t *, int *,
struct xfs_mount_args *);
typedef int (*xvfs_root_t)(bhv_desc_t *, struct xfs_vnode **);
typedef int (*xvfs_statvfs_t)(bhv_desc_t *, xfs_statfs_t *, struct xfs_vnode *);
typedef int (*xvfs_sync_t)(bhv_desc_t *, int, struct cred *);
typedef int (*xvfs_vget_t)(bhv_desc_t *, struct xfs_vnode **, struct fid *);
typedef int (*xvfs_dmapiops_t)(bhv_desc_t *, caddr_t);
typedef int (*xvfs_quotactl_t)(bhv_desc_t *, int, int, caddr_t);
typedef void (*xvfs_init_vnode_t)(bhv_desc_t *,
struct xfs_vnode *, bhv_desc_t *, int);
typedef void (*xvfs_force_shutdown_t)(bhv_desc_t *, int, char *, int);
typedef struct inode * (*xvfs_get_inode_t)(bhv_desc_t *, xfs_ino_t, int);
typedef void (*xvfs_freeze_t)(bhv_desc_t *);
typedef struct xvfsops {
bhv_position_t xvfs_position; /* behavior chain position */
xvfs_mount_t xvfs_mount; /* mount file system */
xvfs_parseargs_t xvfs_parseargs; /* parse mount options */
xvfs_showargs_t xvfs_showargs; /* unparse mount options */
xvfs_unmount_t xvfs_unmount; /* unmount file system */
xvfs_mntupdate_t xvfs_mntupdate; /* update file system options */
xvfs_root_t xvfs_root; /* get root vnode */
xvfs_statvfs_t xvfs_statvfs; /* file system statistics */
xvfs_sync_t xvfs_sync; /* flush files */
xvfs_vget_t xvfs_vget; /* get vnode from fid */
xvfs_dmapiops_t xvfs_dmapiops; /* data migration */
xvfs_quotactl_t xvfs_quotactl; /* disk quota */
xvfs_get_inode_t xvfs_get_inode; /* bhv specific iget */
xvfs_init_vnode_t xvfs_init_vnode; /* initialize a new vnode */
xvfs_force_shutdown_t xvfs_force_shutdown; /* crash and burn */
xvfs_freeze_t xvfs_freeze; /* freeze fs for snapshot */
} xvfsops_t;
/*
* VFS's. Operates on vfs structure pointers (starts at bhv head).
*/
#define VHEAD(v) ((v)->vfs_fbhv)
#define XVFS_MOUNT(v, ma,cr, rv) ((rv) = xvfs_mount(VHEAD(v), ma,cr))
#define XVFS_PARSEARGS(v, o,ma,f, rv) ((rv) = xvfs_parseargs(VHEAD(v), o,ma,f))
#define XVFS_SHOWARGS(v, m, rv) ((rv) = xvfs_showargs(VHEAD(v), m))
#define XVFS_UNMOUNT(v, f, cr, rv) ((rv) = xvfs_unmount(VHEAD(v), f,cr))
#define XVFS_MNTUPDATE(v, fl, args, rv) ((rv) = xvfs_mntupdate(VHEAD(v), fl, args))
#define XVFS_ROOT(v, vpp, rv) ((rv) = xvfs_root(VHEAD(v), vpp))
#define XVFS_STATVFS(v, sp,vp, rv) ((rv) = xvfs_statvfs(VHEAD(v), sp,vp))
#define XVFS_SYNC(v, flag,cr, rv) ((rv) = xvfs_sync(VHEAD(v), flag,cr))
#define XVFS_VGET(v, vpp,fidp, rv) ((rv) = xvfs_vget(VHEAD(v), vpp,fidp))
#define XVFS_DMAPIOPS(v, p, rv) ((rv) = xvfs_dmapiops(VHEAD(v), p))
#define XVFS_QUOTACTL(v, c,id,p, rv) ((rv) = xvfs_quotactl(VHEAD(v), c,id,p))
#define XVFS_GET_INODE(v, ino, fl) ( xvfs_get_inode(VHEAD(v), ino,fl) )
#define XVFS_INIT_VNODE(v, vp,b,ul) ( xvfs_init_vnode(VHEAD(v), vp,b,ul) )
#define XVFS_FORCE_SHUTDOWN(v, fl,f,l) ( xvfs_force_shutdown(VHEAD(v), fl,f,l) )
/*
* PVFS's. Operates on behavior descriptor pointers.
*/
#define PVFS_MOUNT(b, ma,cr, rv) ((rv) = xvfs_mount(b, ma,cr))
#define PVFS_PARSEARGS(b, o,ma,f, rv) ((rv) = xvfs_parseargs(b, o,ma,f))
#define PVFS_SHOWARGS(b, m, rv) ((rv) = xvfs_showargs(b, m))
#define PVFS_UNMOUNT(b, f,cr, rv) ((rv) = xvfs_unmount(b, f,cr))
#define PVFS_MNTUPDATE(b, fl, args, rv) ((rv) = xvfs_mntupdate(b, fl, args))
#define PVFS_ROOT(b, vpp, rv) ((rv) = xvfs_root(b, vpp))
#define PVFS_STATVFS(b, sp,vp, rv) ((rv) = xvfs_statvfs(b, sp,vp))
#define PVFS_SYNC(b, flag,cr, rv) ((rv) = xvfs_sync(b, flag,cr))
#define PVFS_VGET(b, vpp,fidp, rv) ((rv) = xvfs_vget(b, vpp,fidp))
#define PVFS_DMAPIOPS(b, p, rv) ((rv) = xvfs_dmapiops(b, p))
#define PVFS_QUOTACTL(b, c,id,p, rv) ((rv) = xvfs_quotactl(b, c,id,p))
#define PVFS_GET_INODE(b, ino,fl) ( xvfs_get_inode(b, ino,fl) )
#define PVFS_INIT_VNODE(b, vp,b2,ul) ( xvfs_init_vnode(b, vp,b2,ul) )
#define PVFS_FORCE_SHUTDOWN(b, fl,f,l) ( xvfs_force_shutdown(b, fl,f,l) )
extern int xvfs_mount(bhv_desc_t *, struct xfs_mount_args *, struct cred *);
extern int xvfs_parseargs(bhv_desc_t *, char *, struct xfs_mount_args *, int);
extern int xvfs_showargs(bhv_desc_t *, struct sbuf *);
extern int xvfs_unmount(bhv_desc_t *, int, struct cred *);
extern int xvfs_mntupdate(bhv_desc_t *, int *, struct xfs_mount_args *);
extern int xvfs_root(bhv_desc_t *, struct xfs_vnode **);
extern int xvfs_statvfs(bhv_desc_t *, xfs_statfs_t *, struct xfs_vnode *);
extern int xvfs_sync(bhv_desc_t *, int, struct cred *);
extern int xvfs_vget(bhv_desc_t *, struct xfs_vnode **, struct fid *);
extern int xvfs_dmapiops(bhv_desc_t *, caddr_t);
extern int xvfs_quotactl(bhv_desc_t *, int, int, caddr_t);
extern struct inode *xvfs_get_inode(bhv_desc_t *, xfs_ino_t, int);
extern void xvfs_init_vnode(bhv_desc_t *, struct xfs_vnode *, bhv_desc_t *, int);
extern void xvfs_force_shutdown(bhv_desc_t *, int, char *, int);
#define XFS_DMOPS "xfs_dm_operations" /* Data Migration */
#define XFS_QMOPS "xfs_qm_operations" /* Quota Manager */
#define XFS_IOOPS "xfs_io_operations" /* I/O subsystem */
#define XFS_DM_MODULE "xfs_dmapi"
#define XFS_QM_MODULE "xfs_quota"
#define XFS_IO_MODULE "xfs_ioops"
typedef struct bhv_vfsops {
struct xvfsops bhv_common;
void * bhv_custom;
} bhv_vfsops_t;
typedef struct bhv_module {
bhv_desc_t bm_desc;
const char * bm_name;
bhv_vfsops_t * bm_ops;
} bhv_module_t;
#define vfs_bhv_lookup(v, id) ( bhv_lookup_range(&(v)->vfs_bh, (id), (id)) )
#define vfs_bhv_custom(b) ( ((bhv_vfsops_t *)BHV_OPS(b))->bhv_custom )
#define vfs_bhv_set_custom(b,o) ( (b)->bhv_custom = (void *)(o))
#define vfs_bhv_clr_custom(b) ( (b)->bhv_custom = NULL )
extern xfs_vfs_t *vfs_allocate(struct mount *);
extern void vfs_deallocate(xfs_vfs_t *);
extern void vfs_insertops(xfs_vfs_t *, bhv_vfsops_t *);
extern void vfs_insertbhv(xfs_vfs_t *, bhv_desc_t *, xvfsops_t *, void *);
#define bhv_lookup_module(n,m) ( (m) ? \
inter_module_get_request(n, m) : \
inter_module_get(n) )
#define bhv_remove_module(n) inter_module_put(n)
#define bhv_module_init(n,m,op) inter_module_register(n,m,op)
#define bhv_module_exit(n) inter_module_unregister(n)
extern void bhv_insert_all_vfsops(struct xfs_vfs *);
extern void bhv_remove_all_vfsops(struct xfs_vfs *, int);
extern void bhv_remove_vfsops(struct xfs_vfs *, int);
#endif /* __XFS_VFS_H__ */
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