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 <sys/mount.h>
43 struct xfs_mount_args;
46 typedef struct statfs xfs_statfs_t;
48 typedef struct xfs_vfs {
49 u_int vfs_flag; /* flags */
50 xfs_fsid_t vfs_fsid; /* file system ID */
51 xfs_fsid_t *vfs_altfsid; /* An ID fixed for life of FS */
52 bhv_head_t vfs_bh; /* head of vfs behavior chain */
53 struct mount *vfs_mp; /* FreeBSD mount struct */
56 #define MNTTOXVFS(mp) ((struct xfs_vfs*)(mp)->mnt_data)
57 #define XVFSTOMNT(vfs) ((vfs)->vfs_mp)
59 #define vfs_fbhv vfs_bh.bh_first /* 1st on vfs behavior chain */
61 #define bhvtovfs(bdp) ( (struct xfs_vfs *)BHV_VOBJ(bdp) )
62 #define bhvtovfsops(bdp) ( (struct xvfsops *)BHV_OPS(bdp) )
63 #define VFS_BHVHEAD(vfs) ( &(vfs)->vfs_bh )
64 #define VFS_REMOVEBHV(vfs, bdp) ( bhv_remove(VFS_BHVHEAD(vfs), bdp) )
66 #define VFS_POSITION_BASE BHV_POSITION_BASE /* chain bottom */
67 #define VFS_POSITION_TOP BHV_POSITION_TOP /* chain top */
68 #define VFS_POSITION_INVALID BHV_POSITION_INVALID /* invalid pos. num */
71 VFS_BHV_UNKNOWN, /* not specified */
72 VFS_BHV_XFS, /* xfs */
73 VFS_BHV_DM, /* data migration */
74 VFS_BHV_QM, /* quota manager */
75 VFS_BHV_IO, /* IO path */
76 VFS_BHV_END /* housekeeping end-of-range */
79 #define VFS_POSITION_XFS (BHV_POSITION_BASE)
80 #define VFS_POSITION_DM (VFS_POSITION_BASE+10)
81 #define VFS_POSITION_QM (VFS_POSITION_BASE+20)
82 #define VFS_POSITION_IO (VFS_POSITION_BASE+30)
84 #define VFS_RDONLY 0x0001 /* read-only vfs */
85 #define VFS_GRPID 0x0002 /* group-ID assigned from directory */
86 #define VFS_DMI 0x0004 /* filesystem has the DMI enabled */
87 #define VFS_32BITINODES 0x0008 /* do not use inums above 32 bits */
88 #define VFS_END 0x0008 /* max flag */
90 #define SYNC_ATTR 0x0001 /* sync attributes */
91 #define SYNC_CLOSE 0x0002 /* close file system down */
92 #define SYNC_DELWRI 0x0004 /* look at delayed writes */
93 #define SYNC_WAIT 0x0008 /* wait for i/o to complete */
94 #define SYNC_BDFLUSH 0x0010 /* BDFLUSH is calling -- don't block */
95 #define SYNC_FSDATA 0x0020 /* flush fs data (e.g. superblocks) */
96 #define SYNC_REFCACHE 0x0040 /* prune some of the nfs ref cache */
97 #define SYNC_REMOUNT 0x0080 /* remount readonly, no dummy LRs */
98 #define SYNC_QUIESCE 0x0100 /* quiesce filesystem for a snapshot */
100 #define IGET_NOALLOC 0x0001 /* vfs_get_inode may return NULL */
102 typedef int (*xvfs_mount_t)(bhv_desc_t *,
103 struct xfs_mount_args *, struct cred *);
104 typedef int (*xvfs_parseargs_t)(bhv_desc_t *, char *,
105 struct xfs_mount_args *, int);
106 typedef int (*xvfs_showargs_t)(bhv_desc_t *, struct sbuf *);
107 typedef int (*xvfs_unmount_t)(bhv_desc_t *, int, struct cred *);
108 typedef int (*xvfs_mntupdate_t)(bhv_desc_t *, int *,
109 struct xfs_mount_args *);
110 typedef int (*xvfs_root_t)(bhv_desc_t *, struct xfs_vnode **);
111 typedef int (*xvfs_statvfs_t)(bhv_desc_t *, xfs_statfs_t *, struct xfs_vnode *);
112 typedef int (*xvfs_sync_t)(bhv_desc_t *, int, struct cred *);
113 typedef int (*xvfs_vget_t)(bhv_desc_t *, struct xfs_vnode **, struct fid *);
114 typedef int (*xvfs_dmapiops_t)(bhv_desc_t *, caddr_t);
115 typedef int (*xvfs_quotactl_t)(bhv_desc_t *, int, int, caddr_t);
116 typedef void (*xvfs_init_vnode_t)(bhv_desc_t *,
117 struct xfs_vnode *, bhv_desc_t *, int);
118 typedef void (*xvfs_force_shutdown_t)(bhv_desc_t *, int, char *, int);
119 typedef struct inode * (*xvfs_get_inode_t)(bhv_desc_t *, xfs_ino_t, int);
120 typedef void (*xvfs_freeze_t)(bhv_desc_t *);
122 typedef struct xvfsops {
123 bhv_position_t xvfs_position; /* behavior chain position */
124 xvfs_mount_t xvfs_mount; /* mount file system */
125 xvfs_parseargs_t xvfs_parseargs; /* parse mount options */
126 xvfs_showargs_t xvfs_showargs; /* unparse mount options */
127 xvfs_unmount_t xvfs_unmount; /* unmount file system */
128 xvfs_mntupdate_t xvfs_mntupdate; /* update file system options */
129 xvfs_root_t xvfs_root; /* get root vnode */
130 xvfs_statvfs_t xvfs_statvfs; /* file system statistics */
131 xvfs_sync_t xvfs_sync; /* flush files */
132 xvfs_vget_t xvfs_vget; /* get vnode from fid */
133 xvfs_dmapiops_t xvfs_dmapiops; /* data migration */
134 xvfs_quotactl_t xvfs_quotactl; /* disk quota */
135 xvfs_get_inode_t xvfs_get_inode; /* bhv specific iget */
136 xvfs_init_vnode_t xvfs_init_vnode; /* initialize a new vnode */
137 xvfs_force_shutdown_t xvfs_force_shutdown; /* crash and burn */
138 xvfs_freeze_t xvfs_freeze; /* freeze fs for snapshot */
142 * VFS's. Operates on vfs structure pointers (starts at bhv head).
144 #define VHEAD(v) ((v)->vfs_fbhv)
145 #define XVFS_MOUNT(v, ma,cr, rv) ((rv) = xvfs_mount(VHEAD(v), ma,cr))
146 #define XVFS_PARSEARGS(v, o,ma,f, rv) ((rv) = xvfs_parseargs(VHEAD(v), o,ma,f))
147 #define XVFS_SHOWARGS(v, m, rv) ((rv) = xvfs_showargs(VHEAD(v), m))
148 #define XVFS_UNMOUNT(v, f, cr, rv) ((rv) = xvfs_unmount(VHEAD(v), f,cr))
149 #define XVFS_MNTUPDATE(v, fl, args, rv) ((rv) = xvfs_mntupdate(VHEAD(v), fl, args))
150 #define XVFS_ROOT(v, vpp, rv) ((rv) = xvfs_root(VHEAD(v), vpp))
151 #define XVFS_STATVFS(v, sp,vp, rv) ((rv) = xvfs_statvfs(VHEAD(v), sp,vp))
152 #define XVFS_SYNC(v, flag,cr, rv) ((rv) = xvfs_sync(VHEAD(v), flag,cr))
153 #define XVFS_VGET(v, vpp,fidp, rv) ((rv) = xvfs_vget(VHEAD(v), vpp,fidp))
154 #define XVFS_DMAPIOPS(v, p, rv) ((rv) = xvfs_dmapiops(VHEAD(v), p))
155 #define XVFS_QUOTACTL(v, c,id,p, rv) ((rv) = xvfs_quotactl(VHEAD(v), c,id,p))
156 #define XVFS_GET_INODE(v, ino, fl) ( xvfs_get_inode(VHEAD(v), ino,fl) )
157 #define XVFS_INIT_VNODE(v, vp,b,ul) ( xvfs_init_vnode(VHEAD(v), vp,b,ul) )
158 #define XVFS_FORCE_SHUTDOWN(v, fl,f,l) ( xvfs_force_shutdown(VHEAD(v), fl,f,l) )
161 * PVFS's. Operates on behavior descriptor pointers.
163 #define PVFS_MOUNT(b, ma,cr, rv) ((rv) = xvfs_mount(b, ma,cr))
164 #define PVFS_PARSEARGS(b, o,ma,f, rv) ((rv) = xvfs_parseargs(b, o,ma,f))
165 #define PVFS_SHOWARGS(b, m, rv) ((rv) = xvfs_showargs(b, m))
166 #define PVFS_UNMOUNT(b, f,cr, rv) ((rv) = xvfs_unmount(b, f,cr))
167 #define PVFS_MNTUPDATE(b, fl, args, rv) ((rv) = xvfs_mntupdate(b, fl, args))
168 #define PVFS_ROOT(b, vpp, rv) ((rv) = xvfs_root(b, vpp))
169 #define PVFS_STATVFS(b, sp,vp, rv) ((rv) = xvfs_statvfs(b, sp,vp))
170 #define PVFS_SYNC(b, flag,cr, rv) ((rv) = xvfs_sync(b, flag,cr))
171 #define PVFS_VGET(b, vpp,fidp, rv) ((rv) = xvfs_vget(b, vpp,fidp))
172 #define PVFS_DMAPIOPS(b, p, rv) ((rv) = xvfs_dmapiops(b, p))
173 #define PVFS_QUOTACTL(b, c,id,p, rv) ((rv) = xvfs_quotactl(b, c,id,p))
174 #define PVFS_GET_INODE(b, ino,fl) ( xvfs_get_inode(b, ino,fl) )
175 #define PVFS_INIT_VNODE(b, vp,b2,ul) ( xvfs_init_vnode(b, vp,b2,ul) )
176 #define PVFS_FORCE_SHUTDOWN(b, fl,f,l) ( xvfs_force_shutdown(b, fl,f,l) )
178 extern int xvfs_mount(bhv_desc_t *, struct xfs_mount_args *, struct cred *);
179 extern int xvfs_parseargs(bhv_desc_t *, char *, struct xfs_mount_args *, int);
180 extern int xvfs_showargs(bhv_desc_t *, struct sbuf *);
181 extern int xvfs_unmount(bhv_desc_t *, int, struct cred *);
182 extern int xvfs_mntupdate(bhv_desc_t *, int *, struct xfs_mount_args *);
183 extern int xvfs_root(bhv_desc_t *, struct xfs_vnode **);
184 extern int xvfs_statvfs(bhv_desc_t *, xfs_statfs_t *, struct xfs_vnode *);
185 extern int xvfs_sync(bhv_desc_t *, int, struct cred *);
186 extern int xvfs_vget(bhv_desc_t *, struct xfs_vnode **, struct fid *);
187 extern int xvfs_dmapiops(bhv_desc_t *, caddr_t);
188 extern int xvfs_quotactl(bhv_desc_t *, int, int, caddr_t);
189 extern struct inode *xvfs_get_inode(bhv_desc_t *, xfs_ino_t, int);
190 extern void xvfs_init_vnode(bhv_desc_t *, struct xfs_vnode *, bhv_desc_t *, int);
191 extern void xvfs_force_shutdown(bhv_desc_t *, int, char *, int);
193 #define XFS_DMOPS "xfs_dm_operations" /* Data Migration */
194 #define XFS_QMOPS "xfs_qm_operations" /* Quota Manager */
195 #define XFS_IOOPS "xfs_io_operations" /* I/O subsystem */
196 #define XFS_DM_MODULE "xfs_dmapi"
197 #define XFS_QM_MODULE "xfs_quota"
198 #define XFS_IO_MODULE "xfs_ioops"
200 typedef struct bhv_vfsops {
201 struct xvfsops bhv_common;
205 typedef struct bhv_module {
207 const char * bm_name;
208 bhv_vfsops_t * bm_ops;
211 #define vfs_bhv_lookup(v, id) ( bhv_lookup_range(&(v)->vfs_bh, (id), (id)) )
212 #define vfs_bhv_custom(b) ( ((bhv_vfsops_t *)BHV_OPS(b))->bhv_custom )
213 #define vfs_bhv_set_custom(b,o) ( (b)->bhv_custom = (void *)(o))
214 #define vfs_bhv_clr_custom(b) ( (b)->bhv_custom = NULL )
216 extern xfs_vfs_t *vfs_allocate(struct mount *);
217 extern void vfs_deallocate(xfs_vfs_t *);
218 extern void vfs_insertops(xfs_vfs_t *, bhv_vfsops_t *);
219 extern void vfs_insertbhv(xfs_vfs_t *, bhv_desc_t *, xvfsops_t *, void *);
221 #define bhv_lookup_module(n,m) ( (m) ? \
222 inter_module_get_request(n, m) : \
223 inter_module_get(n) )
224 #define bhv_remove_module(n) inter_module_put(n)
225 #define bhv_module_init(n,m,op) inter_module_register(n,m,op)
226 #define bhv_module_exit(n) inter_module_unregister(n)
228 extern void bhv_insert_all_vfsops(struct xfs_vfs *);
229 extern void bhv_remove_all_vfsops(struct xfs_vfs *, int);
230 extern void bhv_remove_vfsops(struct xfs_vfs *, int);
232 #endif /* __XFS_VFS_H__ */