2 * Copyright (c) 2000-2003 Silicon Graphics, Inc. All Rights Reserved.
4 * This program is free software; you can redistribute it and/or modify it
5 * under the terms of version 2 of the GNU General Public License as
6 * published by the Free Software Foundation.
8 * This program is distributed in the hope that it would be useful, but
9 * WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
12 * Further, this software is distributed without any warranty that it is
13 * free of the rightful claim of any third person regarding infringement
14 * or the like. Any license provided herein, whether implied or
15 * otherwise, applies only to this software file. Patent licenses, if
16 * any, provided herein do not apply to combinations of this program with
17 * other software, or any other product whatsoever.
19 * You should have received a copy of the GNU General Public License along
20 * with this program; if not, write the Free Software Foundation, Inc., 59
21 * Temple Place - Suite 330, Boston MA 02111-1307, USA.
23 * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
24 * Mountain View, CA 94043, or:
28 * For further information regarding this notice, see:
30 * http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/
35 #include <linux/vfs.h>
43 struct xfs_mount_args
;
46 u_int vfs_flag
; /* flags */
47 fsid_t vfs_fsid
; /* file system ID */
48 fsid_t
*vfs_altfsid
; /* An ID fixed for life of FS */
49 bhv_head_t vfs_bh
; /* head of vfs behavior chain */
50 struct super_block
*vfs_super
; /* Linux superblock structure */
51 struct task_struct
*vfs_sync_task
;
52 wait_queue_head_t vfs_wait_sync_task
;
55 #define vfs_fbhv vfs_bh.bh_first /* 1st on vfs behavior chain */
57 #define bhvtovfs(bdp) ( (struct vfs *)BHV_VOBJ(bdp) )
58 #define bhvtovfsops(bdp) ( (struct vfsops *)BHV_OPS(bdp) )
59 #define VFS_BHVHEAD(vfs) ( &(vfs)->vfs_bh )
60 #define VFS_REMOVEBHV(vfs, bdp) ( bhv_remove(VFS_BHVHEAD(vfs), bdp) )
62 #define VFS_POSITION_BASE BHV_POSITION_BASE /* chain bottom */
63 #define VFS_POSITION_TOP BHV_POSITION_TOP /* chain top */
64 #define VFS_POSITION_INVALID BHV_POSITION_INVALID /* invalid pos. num */
67 VFS_BHV_UNKNOWN
, /* not specified */
68 VFS_BHV_XFS
, /* xfs */
69 VFS_BHV_DM
, /* data migration */
70 VFS_BHV_QM
, /* quota manager */
71 VFS_BHV_IO
, /* IO path */
72 VFS_BHV_END
/* housekeeping end-of-range */
75 #define VFS_POSITION_XFS (BHV_POSITION_BASE)
76 #define VFS_POSITION_DM (VFS_POSITION_BASE+10)
77 #define VFS_POSITION_QM (VFS_POSITION_BASE+20)
78 #define VFS_POSITION_IO (VFS_POSITION_BASE+30)
80 #define VFS_RDONLY 0x0001 /* read-only vfs */
81 #define VFS_GRPID 0x0002 /* group-ID assigned from directory */
82 #define VFS_DMI 0x0004 /* filesystem has the DMI enabled */
83 #define VFS_UMOUNT 0x0008 /* unmount in progress */
84 #define VFS_END 0x0008 /* max flag */
86 #define SYNC_ATTR 0x0001 /* sync attributes */
87 #define SYNC_CLOSE 0x0002 /* close file system down */
88 #define SYNC_DELWRI 0x0004 /* look at delayed writes */
89 #define SYNC_WAIT 0x0008 /* wait for i/o to complete */
90 #define SYNC_BDFLUSH 0x0010 /* BDFLUSH is calling -- don't block */
91 #define SYNC_FSDATA 0x0020 /* flush fs data (e.g. superblocks) */
92 #define SYNC_REFCACHE 0x0040 /* prune some of the nfs ref cache */
93 #define SYNC_REMOUNT 0x0080 /* remount readonly, no dummy LRs */
95 typedef int (*vfs_mount_t
)(bhv_desc_t
*,
96 struct xfs_mount_args
*, struct cred
*);
97 typedef int (*vfs_parseargs_t
)(bhv_desc_t
*, char *,
98 struct xfs_mount_args
*, int);
99 typedef int (*vfs_showargs_t
)(bhv_desc_t
*, struct seq_file
*);
100 typedef int (*vfs_unmount_t
)(bhv_desc_t
*, int, struct cred
*);
101 typedef int (*vfs_mntupdate_t
)(bhv_desc_t
*, int *,
102 struct xfs_mount_args
*);
103 typedef int (*vfs_root_t
)(bhv_desc_t
*, struct vnode
**);
104 typedef int (*vfs_statvfs_t
)(bhv_desc_t
*, struct kstatfs
*, struct vnode
*);
105 typedef int (*vfs_sync_t
)(bhv_desc_t
*, int, struct cred
*);
106 typedef int (*vfs_vget_t
)(bhv_desc_t
*, struct vnode
**, struct fid
*);
107 typedef int (*vfs_dmapiops_t
)(bhv_desc_t
*, caddr_t
);
108 typedef int (*vfs_quotactl_t
)(bhv_desc_t
*, int, int, caddr_t
);
109 typedef void (*vfs_init_vnode_t
)(bhv_desc_t
*,
110 struct vnode
*, bhv_desc_t
*, int);
111 typedef void (*vfs_force_shutdown_t
)(bhv_desc_t
*, int, char *, int);
113 typedef struct vfsops
{
114 bhv_position_t vf_position
; /* behavior chain position */
115 vfs_mount_t vfs_mount
; /* mount file system */
116 vfs_parseargs_t vfs_parseargs
; /* parse mount options */
117 vfs_showargs_t vfs_showargs
; /* unparse mount options */
118 vfs_unmount_t vfs_unmount
; /* unmount file system */
119 vfs_mntupdate_t vfs_mntupdate
; /* update file system options */
120 vfs_root_t vfs_root
; /* get root vnode */
121 vfs_statvfs_t vfs_statvfs
; /* file system statistics */
122 vfs_sync_t vfs_sync
; /* flush files */
123 vfs_vget_t vfs_vget
; /* get vnode from fid */
124 vfs_dmapiops_t vfs_dmapiops
; /* data migration */
125 vfs_quotactl_t vfs_quotactl
; /* disk quota */
126 vfs_init_vnode_t vfs_init_vnode
; /* initialize a new vnode */
127 vfs_force_shutdown_t vfs_force_shutdown
; /* crash and burn */
131 * VFS's. Operates on vfs structure pointers (starts at bhv head).
133 #define VHEAD(v) ((v)->vfs_fbhv)
134 #define VFS_MOUNT(v, ma,cr, rv) ((rv) = vfs_mount(VHEAD(v), ma,cr))
135 #define VFS_PARSEARGS(v, o,ma,f, rv) ((rv) = vfs_parseargs(VHEAD(v), o,ma,f))
136 #define VFS_SHOWARGS(v, m, rv) ((rv) = vfs_showargs(VHEAD(v), m))
137 #define VFS_UNMOUNT(v, f, cr, rv) ((rv) = vfs_unmount(VHEAD(v), f,cr))
138 #define VFS_MNTUPDATE(v, fl, args, rv) ((rv) = vfs_mntupdate(VHEAD(v), fl, args))
139 #define VFS_ROOT(v, vpp, rv) ((rv) = vfs_root(VHEAD(v), vpp))
140 #define VFS_STATVFS(v, sp,vp, rv) ((rv) = vfs_statvfs(VHEAD(v), sp,vp))
141 #define VFS_SYNC(v, flag,cr, rv) ((rv) = vfs_sync(VHEAD(v), flag,cr))
142 #define VFS_VGET(v, vpp,fidp, rv) ((rv) = vfs_vget(VHEAD(v), vpp,fidp))
143 #define VFS_DMAPIOPS(v, p, rv) ((rv) = vfs_dmapiops(VHEAD(v), p))
144 #define VFS_QUOTACTL(v, c,id,p, rv) ((rv) = vfs_quotactl(VHEAD(v), c,id,p))
145 #define VFS_INIT_VNODE(v, vp,b,ul) ( vfs_init_vnode(VHEAD(v), vp,b,ul) )
146 #define VFS_FORCE_SHUTDOWN(v, fl,f,l) ( vfs_force_shutdown(VHEAD(v), fl,f,l) )
149 * PVFS's. Operates on behavior descriptor pointers.
151 #define PVFS_MOUNT(b, ma,cr, rv) ((rv) = vfs_mount(b, ma,cr))
152 #define PVFS_PARSEARGS(b, o,ma,f, rv) ((rv) = vfs_parseargs(b, o,ma,f))
153 #define PVFS_SHOWARGS(b, m, rv) ((rv) = vfs_showargs(b, m))
154 #define PVFS_UNMOUNT(b, f,cr, rv) ((rv) = vfs_unmount(b, f,cr))
155 #define PVFS_MNTUPDATE(b, fl, args, rv) ((rv) = vfs_mntupdate(b, fl, args))
156 #define PVFS_ROOT(b, vpp, rv) ((rv) = vfs_root(b, vpp))
157 #define PVFS_STATVFS(b, sp,vp, rv) ((rv) = vfs_statvfs(b, sp,vp))
158 #define PVFS_SYNC(b, flag,cr, rv) ((rv) = vfs_sync(b, flag,cr))
159 #define PVFS_VGET(b, vpp,fidp, rv) ((rv) = vfs_vget(b, vpp,fidp))
160 #define PVFS_DMAPIOPS(b, p, rv) ((rv) = vfs_dmapiops(b, p))
161 #define PVFS_QUOTACTL(b, c,id,p, rv) ((rv) = vfs_quotactl(b, c,id,p))
162 #define PVFS_INIT_VNODE(b, vp,b2,ul) ( vfs_init_vnode(b, vp,b2,ul) )
163 #define PVFS_FORCE_SHUTDOWN(b, fl,f,l) ( vfs_force_shutdown(b, fl,f,l) )
165 extern int vfs_mount(bhv_desc_t
*, struct xfs_mount_args
*, struct cred
*);
166 extern int vfs_parseargs(bhv_desc_t
*, char *, struct xfs_mount_args
*, int);
167 extern int vfs_showargs(bhv_desc_t
*, struct seq_file
*);
168 extern int vfs_unmount(bhv_desc_t
*, int, struct cred
*);
169 extern int vfs_mntupdate(bhv_desc_t
*, int *, struct xfs_mount_args
*);
170 extern int vfs_root(bhv_desc_t
*, struct vnode
**);
171 extern int vfs_statvfs(bhv_desc_t
*, struct kstatfs
*, struct vnode
*);
172 extern int vfs_sync(bhv_desc_t
*, int, struct cred
*);
173 extern int vfs_vget(bhv_desc_t
*, struct vnode
**, struct fid
*);
174 extern int vfs_dmapiops(bhv_desc_t
*, caddr_t
);
175 extern int vfs_quotactl(bhv_desc_t
*, int, int, caddr_t
);
176 extern void vfs_init_vnode(bhv_desc_t
*, struct vnode
*, bhv_desc_t
*, int);
177 extern void vfs_force_shutdown(bhv_desc_t
*, int, char *, int);
179 typedef struct bhv_vfsops
{
180 struct vfsops bhv_common
;
184 #define vfs_bhv_lookup(v, id) ( bhv_lookup_range(&(v)->vfs_bh, (id), (id)) )
185 #define vfs_bhv_custom(b) ( ((bhv_vfsops_t *)BHV_OPS(b))->bhv_custom )
186 #define vfs_bhv_set_custom(b,o) ( (b)->bhv_custom = (void *)(o))
187 #define vfs_bhv_clr_custom(b) ( (b)->bhv_custom = NULL )
189 extern vfs_t
*vfs_allocate(void);
190 extern void vfs_deallocate(vfs_t
*);
191 extern void vfs_insertops(vfs_t
*, bhv_vfsops_t
*);
192 extern void vfs_insertbhv(vfs_t
*, bhv_desc_t
*, vfsops_t
*, void *);
194 extern void bhv_insert_all_vfsops(struct vfs
*);
195 extern void bhv_remove_all_vfsops(struct vfs
*, int);
196 extern void bhv_remove_vfsops(struct vfs
*, int);
198 #endif /* __XFS_VFS_H__ */