diff options
Diffstat (limited to 'fs/xfs/linux-2.6/xfs_vfs.c')
-rw-r--r-- | fs/xfs/linux-2.6/xfs_vfs.c | 330 |
1 files changed, 330 insertions, 0 deletions
diff --git a/fs/xfs/linux-2.6/xfs_vfs.c b/fs/xfs/linux-2.6/xfs_vfs.c new file mode 100644 index 000000000000..669c61644959 --- /dev/null +++ b/fs/xfs/linux-2.6/xfs_vfs.c | |||
@@ -0,0 +1,330 @@ | |||
1 | /* | ||
2 | * Copyright (c) 2000-2004 Silicon Graphics, Inc. All Rights Reserved. | ||
3 | * | ||
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. | ||
7 | * | ||
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. | ||
11 | * | ||
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. | ||
18 | * | ||
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. | ||
22 | * | ||
23 | * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy, | ||
24 | * Mountain View, CA 94043, or: | ||
25 | * | ||
26 | * http://www.sgi.com | ||
27 | * | ||
28 | * For further information regarding this notice, see: | ||
29 | * | ||
30 | * http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/ | ||
31 | */ | ||
32 | |||
33 | #include "xfs.h" | ||
34 | #include "xfs_fs.h" | ||
35 | #include "xfs_macros.h" | ||
36 | #include "xfs_inum.h" | ||
37 | #include "xfs_log.h" | ||
38 | #include "xfs_clnt.h" | ||
39 | #include "xfs_trans.h" | ||
40 | #include "xfs_sb.h" | ||
41 | #include "xfs_ag.h" | ||
42 | #include "xfs_dir.h" | ||
43 | #include "xfs_dir2.h" | ||
44 | #include "xfs_imap.h" | ||
45 | #include "xfs_alloc.h" | ||
46 | #include "xfs_dmapi.h" | ||
47 | #include "xfs_mount.h" | ||
48 | #include "xfs_quota.h" | ||
49 | |||
50 | int | ||
51 | vfs_mount( | ||
52 | struct bhv_desc *bdp, | ||
53 | struct xfs_mount_args *args, | ||
54 | struct cred *cr) | ||
55 | { | ||
56 | struct bhv_desc *next = bdp; | ||
57 | |||
58 | ASSERT(next); | ||
59 | while (! (bhvtovfsops(next))->vfs_mount) | ||
60 | next = BHV_NEXT(next); | ||
61 | return ((*bhvtovfsops(next)->vfs_mount)(next, args, cr)); | ||
62 | } | ||
63 | |||
64 | int | ||
65 | vfs_parseargs( | ||
66 | struct bhv_desc *bdp, | ||
67 | char *s, | ||
68 | struct xfs_mount_args *args, | ||
69 | int f) | ||
70 | { | ||
71 | struct bhv_desc *next = bdp; | ||
72 | |||
73 | ASSERT(next); | ||
74 | while (! (bhvtovfsops(next))->vfs_parseargs) | ||
75 | next = BHV_NEXT(next); | ||
76 | return ((*bhvtovfsops(next)->vfs_parseargs)(next, s, args, f)); | ||
77 | } | ||
78 | |||
79 | int | ||
80 | vfs_showargs( | ||
81 | struct bhv_desc *bdp, | ||
82 | struct seq_file *m) | ||
83 | { | ||
84 | struct bhv_desc *next = bdp; | ||
85 | |||
86 | ASSERT(next); | ||
87 | while (! (bhvtovfsops(next))->vfs_showargs) | ||
88 | next = BHV_NEXT(next); | ||
89 | return ((*bhvtovfsops(next)->vfs_showargs)(next, m)); | ||
90 | } | ||
91 | |||
92 | int | ||
93 | vfs_unmount( | ||
94 | struct bhv_desc *bdp, | ||
95 | int fl, | ||
96 | struct cred *cr) | ||
97 | { | ||
98 | struct bhv_desc *next = bdp; | ||
99 | |||
100 | ASSERT(next); | ||
101 | while (! (bhvtovfsops(next))->vfs_unmount) | ||
102 | next = BHV_NEXT(next); | ||
103 | return ((*bhvtovfsops(next)->vfs_unmount)(next, fl, cr)); | ||
104 | } | ||
105 | |||
106 | int | ||
107 | vfs_mntupdate( | ||
108 | struct bhv_desc *bdp, | ||
109 | int *fl, | ||
110 | struct xfs_mount_args *args) | ||
111 | { | ||
112 | struct bhv_desc *next = bdp; | ||
113 | |||
114 | ASSERT(next); | ||
115 | while (! (bhvtovfsops(next))->vfs_mntupdate) | ||
116 | next = BHV_NEXT(next); | ||
117 | return ((*bhvtovfsops(next)->vfs_mntupdate)(next, fl, args)); | ||
118 | } | ||
119 | |||
120 | int | ||
121 | vfs_root( | ||
122 | struct bhv_desc *bdp, | ||
123 | struct vnode **vpp) | ||
124 | { | ||
125 | struct bhv_desc *next = bdp; | ||
126 | |||
127 | ASSERT(next); | ||
128 | while (! (bhvtovfsops(next))->vfs_root) | ||
129 | next = BHV_NEXT(next); | ||
130 | return ((*bhvtovfsops(next)->vfs_root)(next, vpp)); | ||
131 | } | ||
132 | |||
133 | int | ||
134 | vfs_statvfs( | ||
135 | struct bhv_desc *bdp, | ||
136 | xfs_statfs_t *sp, | ||
137 | struct vnode *vp) | ||
138 | { | ||
139 | struct bhv_desc *next = bdp; | ||
140 | |||
141 | ASSERT(next); | ||
142 | while (! (bhvtovfsops(next))->vfs_statvfs) | ||
143 | next = BHV_NEXT(next); | ||
144 | return ((*bhvtovfsops(next)->vfs_statvfs)(next, sp, vp)); | ||
145 | } | ||
146 | |||
147 | int | ||
148 | vfs_sync( | ||
149 | struct bhv_desc *bdp, | ||
150 | int fl, | ||
151 | struct cred *cr) | ||
152 | { | ||
153 | struct bhv_desc *next = bdp; | ||
154 | |||
155 | ASSERT(next); | ||
156 | while (! (bhvtovfsops(next))->vfs_sync) | ||
157 | next = BHV_NEXT(next); | ||
158 | return ((*bhvtovfsops(next)->vfs_sync)(next, fl, cr)); | ||
159 | } | ||
160 | |||
161 | int | ||
162 | vfs_vget( | ||
163 | struct bhv_desc *bdp, | ||
164 | struct vnode **vpp, | ||
165 | struct fid *fidp) | ||
166 | { | ||
167 | struct bhv_desc *next = bdp; | ||
168 | |||
169 | ASSERT(next); | ||
170 | while (! (bhvtovfsops(next))->vfs_vget) | ||
171 | next = BHV_NEXT(next); | ||
172 | return ((*bhvtovfsops(next)->vfs_vget)(next, vpp, fidp)); | ||
173 | } | ||
174 | |||
175 | int | ||
176 | vfs_dmapiops( | ||
177 | struct bhv_desc *bdp, | ||
178 | caddr_t addr) | ||
179 | { | ||
180 | struct bhv_desc *next = bdp; | ||
181 | |||
182 | ASSERT(next); | ||
183 | while (! (bhvtovfsops(next))->vfs_dmapiops) | ||
184 | next = BHV_NEXT(next); | ||
185 | return ((*bhvtovfsops(next)->vfs_dmapiops)(next, addr)); | ||
186 | } | ||
187 | |||
188 | int | ||
189 | vfs_quotactl( | ||
190 | struct bhv_desc *bdp, | ||
191 | int cmd, | ||
192 | int id, | ||
193 | caddr_t addr) | ||
194 | { | ||
195 | struct bhv_desc *next = bdp; | ||
196 | |||
197 | ASSERT(next); | ||
198 | while (! (bhvtovfsops(next))->vfs_quotactl) | ||
199 | next = BHV_NEXT(next); | ||
200 | return ((*bhvtovfsops(next)->vfs_quotactl)(next, cmd, id, addr)); | ||
201 | } | ||
202 | |||
203 | void | ||
204 | vfs_init_vnode( | ||
205 | struct bhv_desc *bdp, | ||
206 | struct vnode *vp, | ||
207 | struct bhv_desc *bp, | ||
208 | int unlock) | ||
209 | { | ||
210 | struct bhv_desc *next = bdp; | ||
211 | |||
212 | ASSERT(next); | ||
213 | while (! (bhvtovfsops(next))->vfs_init_vnode) | ||
214 | next = BHV_NEXT(next); | ||
215 | ((*bhvtovfsops(next)->vfs_init_vnode)(next, vp, bp, unlock)); | ||
216 | } | ||
217 | |||
218 | void | ||
219 | vfs_force_shutdown( | ||
220 | struct bhv_desc *bdp, | ||
221 | int fl, | ||
222 | char *file, | ||
223 | int line) | ||
224 | { | ||
225 | struct bhv_desc *next = bdp; | ||
226 | |||
227 | ASSERT(next); | ||
228 | while (! (bhvtovfsops(next))->vfs_force_shutdown) | ||
229 | next = BHV_NEXT(next); | ||
230 | ((*bhvtovfsops(next)->vfs_force_shutdown)(next, fl, file, line)); | ||
231 | } | ||
232 | |||
233 | void | ||
234 | vfs_freeze( | ||
235 | struct bhv_desc *bdp) | ||
236 | { | ||
237 | struct bhv_desc *next = bdp; | ||
238 | |||
239 | ASSERT(next); | ||
240 | while (! (bhvtovfsops(next))->vfs_freeze) | ||
241 | next = BHV_NEXT(next); | ||
242 | ((*bhvtovfsops(next)->vfs_freeze)(next)); | ||
243 | } | ||
244 | |||
245 | vfs_t * | ||
246 | vfs_allocate( void ) | ||
247 | { | ||
248 | struct vfs *vfsp; | ||
249 | |||
250 | vfsp = kmem_zalloc(sizeof(vfs_t), KM_SLEEP); | ||
251 | bhv_head_init(VFS_BHVHEAD(vfsp), "vfs"); | ||
252 | INIT_LIST_HEAD(&vfsp->vfs_sync_list); | ||
253 | spin_lock_init(&vfsp->vfs_sync_lock); | ||
254 | init_waitqueue_head(&vfsp->vfs_wait_sync_task); | ||
255 | init_waitqueue_head(&vfsp->vfs_wait_single_sync_task); | ||
256 | return vfsp; | ||
257 | } | ||
258 | |||
259 | void | ||
260 | vfs_deallocate( | ||
261 | struct vfs *vfsp) | ||
262 | { | ||
263 | bhv_head_destroy(VFS_BHVHEAD(vfsp)); | ||
264 | kmem_free(vfsp, sizeof(vfs_t)); | ||
265 | } | ||
266 | |||
267 | void | ||
268 | vfs_insertops( | ||
269 | struct vfs *vfsp, | ||
270 | struct bhv_vfsops *vfsops) | ||
271 | { | ||
272 | struct bhv_desc *bdp; | ||
273 | |||
274 | bdp = kmem_alloc(sizeof(struct bhv_desc), KM_SLEEP); | ||
275 | bhv_desc_init(bdp, NULL, vfsp, vfsops); | ||
276 | bhv_insert(&vfsp->vfs_bh, bdp); | ||
277 | } | ||
278 | |||
279 | void | ||
280 | vfs_insertbhv( | ||
281 | struct vfs *vfsp, | ||
282 | struct bhv_desc *bdp, | ||
283 | struct vfsops *vfsops, | ||
284 | void *mount) | ||
285 | { | ||
286 | bhv_desc_init(bdp, mount, vfsp, vfsops); | ||
287 | bhv_insert_initial(&vfsp->vfs_bh, bdp); | ||
288 | } | ||
289 | |||
290 | void | ||
291 | bhv_remove_vfsops( | ||
292 | struct vfs *vfsp, | ||
293 | int pos) | ||
294 | { | ||
295 | struct bhv_desc *bhv; | ||
296 | |||
297 | bhv = bhv_lookup_range(&vfsp->vfs_bh, pos, pos); | ||
298 | if (!bhv) | ||
299 | return; | ||
300 | bhv_remove(&vfsp->vfs_bh, bhv); | ||
301 | kmem_free(bhv, sizeof(*bhv)); | ||
302 | } | ||
303 | |||
304 | void | ||
305 | bhv_remove_all_vfsops( | ||
306 | struct vfs *vfsp, | ||
307 | int freebase) | ||
308 | { | ||
309 | struct xfs_mount *mp; | ||
310 | |||
311 | bhv_remove_vfsops(vfsp, VFS_POSITION_QM); | ||
312 | bhv_remove_vfsops(vfsp, VFS_POSITION_DM); | ||
313 | if (!freebase) | ||
314 | return; | ||
315 | mp = XFS_BHVTOM(bhv_lookup(VFS_BHVHEAD(vfsp), &xfs_vfsops)); | ||
316 | VFS_REMOVEBHV(vfsp, &mp->m_bhv); | ||
317 | xfs_mount_free(mp, 0); | ||
318 | } | ||
319 | |||
320 | void | ||
321 | bhv_insert_all_vfsops( | ||
322 | struct vfs *vfsp) | ||
323 | { | ||
324 | struct xfs_mount *mp; | ||
325 | |||
326 | mp = xfs_mount_init(); | ||
327 | vfs_insertbhv(vfsp, &mp->m_bhv, &xfs_vfsops, mp); | ||
328 | vfs_insertdmapi(vfsp); | ||
329 | vfs_insertquota(vfsp); | ||
330 | } | ||