--- /dev/null
+/*
+ * 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 <linux/vfs.h>
+#include "xfs_fs.h"
+
+struct fid;
+struct cred;
+struct vnode;
+struct kstatfs;
+struct seq_file;
+struct super_block;
+struct xfs_mount_args;
+
+typedef struct kstatfs xfs_statfs_t;
+
+typedef struct 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 super_block *vfs_super; /* Linux superblock structure */
+ struct task_struct *vfs_sync_task; /* xfssyncd process */
+ int vfs_sync_seq; /* xfssyncd generation number */
+ wait_queue_head_t vfs_wait_single_sync_task;
+ wait_queue_head_t vfs_wait_sync_task;
+} vfs_t;
+
+#define vfs_fbhv vfs_bh.bh_first /* 1st on vfs behavior chain */
+
+#define bhvtovfs(bdp) ( (struct vfs *)BHV_VOBJ(bdp) )
+#define bhvtovfsops(bdp) ( (struct vfsops *)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_UMOUNT 0x0008 /* unmount in progress */
+#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 */
+
+typedef int (*vfs_mount_t)(bhv_desc_t *,
+ struct xfs_mount_args *, struct cred *);
+typedef int (*vfs_parseargs_t)(bhv_desc_t *, char *,
+ struct xfs_mount_args *, int);
+typedef int (*vfs_showargs_t)(bhv_desc_t *, struct seq_file *);
+typedef int (*vfs_unmount_t)(bhv_desc_t *, int, struct cred *);
+typedef int (*vfs_mntupdate_t)(bhv_desc_t *, int *,
+ struct xfs_mount_args *);
+typedef int (*vfs_root_t)(bhv_desc_t *, struct vnode **);
+typedef int (*vfs_statvfs_t)(bhv_desc_t *, xfs_statfs_t *, struct vnode *);
+typedef int (*vfs_sync_t)(bhv_desc_t *, int, struct cred *);
+typedef int (*vfs_vget_t)(bhv_desc_t *, struct vnode **, struct fid *);
+typedef int (*vfs_dmapiops_t)(bhv_desc_t *, caddr_t);
+typedef int (*vfs_quotactl_t)(bhv_desc_t *, int, int, caddr_t);
+typedef void (*vfs_init_vnode_t)(bhv_desc_t *,
+ struct vnode *, bhv_desc_t *, int);
+typedef void (*vfs_force_shutdown_t)(bhv_desc_t *, int, char *, int);
+typedef void (*vfs_freeze_t)(bhv_desc_t *);
+
+typedef struct vfsops {
+ bhv_position_t vf_position; /* behavior chain position */
+ vfs_mount_t vfs_mount; /* mount file system */
+ vfs_parseargs_t vfs_parseargs; /* parse mount options */
+ vfs_showargs_t vfs_showargs; /* unparse mount options */
+ vfs_unmount_t vfs_unmount; /* unmount file system */
+ vfs_mntupdate_t vfs_mntupdate; /* update file system options */
+ vfs_root_t vfs_root; /* get root vnode */
+ vfs_statvfs_t vfs_statvfs; /* file system statistics */
+ vfs_sync_t vfs_sync; /* flush files */
+ vfs_vget_t vfs_vget; /* get vnode from fid */
+ vfs_dmapiops_t vfs_dmapiops; /* data migration */
+ vfs_quotactl_t vfs_quotactl; /* disk quota */
+ vfs_init_vnode_t vfs_init_vnode; /* initialize a new vnode */
+ vfs_force_shutdown_t vfs_force_shutdown; /* crash and burn */
+ vfs_freeze_t vfs_freeze; /* freeze fs for snapshot */
+} vfsops_t;
+
+/*
+ * VFS's. Operates on vfs structure pointers (starts at bhv head).
+ */
+#define VHEAD(v) ((v)->vfs_fbhv)
+#define VFS_MOUNT(v, ma,cr, rv) ((rv) = vfs_mount(VHEAD(v), ma,cr))
+#define VFS_PARSEARGS(v, o,ma,f, rv) ((rv) = vfs_parseargs(VHEAD(v), o,ma,f))
+#define VFS_SHOWARGS(v, m, rv) ((rv) = vfs_showargs(VHEAD(v), m))
+#define VFS_UNMOUNT(v, f, cr, rv) ((rv) = vfs_unmount(VHEAD(v), f,cr))
+#define VFS_MNTUPDATE(v, fl, args, rv) ((rv) = vfs_mntupdate(VHEAD(v), fl, args))
+#define VFS_ROOT(v, vpp, rv) ((rv) = vfs_root(VHEAD(v), vpp))
+#define VFS_STATVFS(v, sp,vp, rv) ((rv) = vfs_statvfs(VHEAD(v), sp,vp))
+#define VFS_SYNC(v, flag,cr, rv) ((rv) = vfs_sync(VHEAD(v), flag,cr))
+#define VFS_VGET(v, vpp,fidp, rv) ((rv) = vfs_vget(VHEAD(v), vpp,fidp))
+#define VFS_DMAPIOPS(v, p, rv) ((rv) = vfs_dmapiops(VHEAD(v), p))
+#define VFS_QUOTACTL(v, c,id,p, rv) ((rv) = vfs_quotactl(VHEAD(v), c,id,p))
+#define VFS_INIT_VNODE(v, vp,b,ul) ( vfs_init_vnode(VHEAD(v), vp,b,ul) )
+#define VFS_FORCE_SHUTDOWN(v, fl,f,l) ( vfs_force_shutdown(VHEAD(v), fl,f,l) )
+#define VFS_FREEZE(v) ( vfs_freeze(VHEAD(v)) )
+
+/*
+ * PVFS's. Operates on behavior descriptor pointers.
+ */
+#define PVFS_MOUNT(b, ma,cr, rv) ((rv) = vfs_mount(b, ma,cr))
+#define PVFS_PARSEARGS(b, o,ma,f, rv) ((rv) = vfs_parseargs(b, o,ma,f))
+#define PVFS_SHOWARGS(b, m, rv) ((rv) = vfs_showargs(b, m))
+#define PVFS_UNMOUNT(b, f,cr, rv) ((rv) = vfs_unmount(b, f,cr))
+#define PVFS_MNTUPDATE(b, fl, args, rv) ((rv) = vfs_mntupdate(b, fl, args))
+#define PVFS_ROOT(b, vpp, rv) ((rv) = vfs_root(b, vpp))
+#define PVFS_STATVFS(b, sp,vp, rv) ((rv) = vfs_statvfs(b, sp,vp))
+#define PVFS_SYNC(b, flag,cr, rv) ((rv) = vfs_sync(b, flag,cr))
+#define PVFS_VGET(b, vpp,fidp, rv) ((rv) = vfs_vget(b, vpp,fidp))
+#define PVFS_DMAPIOPS(b, p, rv) ((rv) = vfs_dmapiops(b, p))
+#define PVFS_QUOTACTL(b, c,id,p, rv) ((rv) = vfs_quotactl(b, c,id,p))
+#define PVFS_INIT_VNODE(b, vp,b2,ul) ( vfs_init_vnode(b, vp,b2,ul) )
+#define PVFS_FORCE_SHUTDOWN(b, fl,f,l) ( vfs_force_shutdown(b, fl,f,l) )
+#define PVFS_FREEZE(b) ( vfs_freeze(b) )
+
+extern int vfs_mount(bhv_desc_t *, struct xfs_mount_args *, struct cred *);
+extern int vfs_parseargs(bhv_desc_t *, char *, struct xfs_mount_args *, int);
+extern int vfs_showargs(bhv_desc_t *, struct seq_file *);
+extern int vfs_unmount(bhv_desc_t *, int, struct cred *);
+extern int vfs_mntupdate(bhv_desc_t *, int *, struct xfs_mount_args *);
+extern int vfs_root(bhv_desc_t *, struct vnode **);
+extern int vfs_statvfs(bhv_desc_t *, xfs_statfs_t *, struct vnode *);
+extern int vfs_sync(bhv_desc_t *, int, struct cred *);
+extern int vfs_vget(bhv_desc_t *, struct vnode **, struct fid *);
+extern int vfs_dmapiops(bhv_desc_t *, caddr_t);
+extern int vfs_quotactl(bhv_desc_t *, int, int, caddr_t);
+extern void vfs_init_vnode(bhv_desc_t *, struct vnode *, bhv_desc_t *, int);
+extern void vfs_force_shutdown(bhv_desc_t *, int, char *, int);
+extern void vfs_freeze(bhv_desc_t *);
+
+typedef struct bhv_vfsops {
+ struct vfsops bhv_common;
+ void * bhv_custom;
+} bhv_vfsops_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 vfs_t *vfs_allocate(void);
+extern void vfs_deallocate(vfs_t *);
+extern void vfs_insertops(vfs_t *, bhv_vfsops_t *);
+extern void vfs_insertbhv(vfs_t *, bhv_desc_t *, vfsops_t *, void *);
+
+extern void bhv_insert_all_vfsops(struct vfs *);
+extern void bhv_remove_all_vfsops(struct vfs *, int);
+extern void bhv_remove_vfsops(struct vfs *, int);
+
+#endif /* __XFS_VFS_H__ */
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