Commit | Line | Data |
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1da177e4 | 1 | /* |
932f2c32 | 2 | * Copyright (c) 2000-2006 Silicon Graphics, Inc. |
4ce3121f | 3 | * All Rights Reserved. |
1da177e4 | 4 | * |
4ce3121f NS |
5 | * This program is free software; you can redistribute it and/or |
6 | * modify it under the terms of the GNU General Public License as | |
1da177e4 LT |
7 | * published by the Free Software Foundation. |
8 | * | |
4ce3121f NS |
9 | * This program is distributed in the hope that it would be useful, |
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
12 | * GNU General Public License for more details. | |
1da177e4 | 13 | * |
4ce3121f NS |
14 | * You should have received a copy of the GNU General Public License |
15 | * along with this program; if not, write the Free Software Foundation, | |
16 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
1da177e4 | 17 | */ |
1da177e4 LT |
18 | #include "xfs.h" |
19 | #include "xfs_fs.h" | |
a844f451 | 20 | #include "xfs_bit.h" |
1da177e4 | 21 | #include "xfs_log.h" |
a844f451 | 22 | #include "xfs_inum.h" |
1da177e4 LT |
23 | #include "xfs_clnt.h" |
24 | #include "xfs_trans.h" | |
25 | #include "xfs_sb.h" | |
a844f451 | 26 | #include "xfs_ag.h" |
1da177e4 LT |
27 | #include "xfs_dir2.h" |
28 | #include "xfs_alloc.h" | |
29 | #include "xfs_dmapi.h" | |
30 | #include "xfs_quota.h" | |
31 | #include "xfs_mount.h" | |
1da177e4 | 32 | #include "xfs_bmap_btree.h" |
a844f451 | 33 | #include "xfs_alloc_btree.h" |
1da177e4 | 34 | #include "xfs_ialloc_btree.h" |
1da177e4 | 35 | #include "xfs_dir2_sf.h" |
a844f451 | 36 | #include "xfs_attr_sf.h" |
1da177e4 LT |
37 | #include "xfs_dinode.h" |
38 | #include "xfs_inode.h" | |
a844f451 NS |
39 | #include "xfs_ialloc.h" |
40 | #include "xfs_itable.h" | |
41 | #include "xfs_btree.h" | |
1da177e4 | 42 | #include "xfs_bmap.h" |
1da177e4 LT |
43 | #include "xfs_rtalloc.h" |
44 | #include "xfs_error.h" | |
1da177e4 LT |
45 | #include "xfs_rw.h" |
46 | #include "xfs_acl.h" | |
47 | #include "xfs_cap.h" | |
48 | #include "xfs_mac.h" | |
49 | #include "xfs_attr.h" | |
50 | #include "xfs_buf_item.h" | |
1da177e4 LT |
51 | #include "xfs_qm.h" |
52 | ||
53 | #define MNTOPT_QUOTA "quota" /* disk quotas (user) */ | |
54 | #define MNTOPT_NOQUOTA "noquota" /* no quotas */ | |
55 | #define MNTOPT_USRQUOTA "usrquota" /* user quota enabled */ | |
56 | #define MNTOPT_GRPQUOTA "grpquota" /* group quota enabled */ | |
c8ad20ff | 57 | #define MNTOPT_PRJQUOTA "prjquota" /* project quota enabled */ |
1da177e4 LT |
58 | #define MNTOPT_UQUOTA "uquota" /* user quota (IRIX variant) */ |
59 | #define MNTOPT_GQUOTA "gquota" /* group quota (IRIX variant) */ | |
c8ad20ff | 60 | #define MNTOPT_PQUOTA "pquota" /* project quota (IRIX variant) */ |
1da177e4 LT |
61 | #define MNTOPT_UQUOTANOENF "uqnoenforce"/* user quota limit enforcement */ |
62 | #define MNTOPT_GQUOTANOENF "gqnoenforce"/* group quota limit enforcement */ | |
c8ad20ff | 63 | #define MNTOPT_PQUOTANOENF "pqnoenforce"/* project quota limit enforcement */ |
1da177e4 LT |
64 | #define MNTOPT_QUOTANOENF "qnoenforce" /* same as uqnoenforce */ |
65 | ||
66 | STATIC int | |
67 | xfs_qm_parseargs( | |
68 | struct bhv_desc *bhv, | |
69 | char *options, | |
70 | struct xfs_mount_args *args, | |
71 | int update) | |
72 | { | |
73 | size_t length; | |
74 | char *local_options = options; | |
75 | char *this_char; | |
76 | int error; | |
77 | int referenced = update; | |
78 | ||
79 | while ((this_char = strsep(&local_options, ",")) != NULL) { | |
80 | length = strlen(this_char); | |
81 | if (local_options) | |
82 | length++; | |
83 | ||
84 | if (!strcmp(this_char, MNTOPT_NOQUOTA)) { | |
85 | args->flags &= ~(XFSMNT_UQUOTAENF|XFSMNT_UQUOTA); | |
86 | args->flags &= ~(XFSMNT_GQUOTAENF|XFSMNT_GQUOTA); | |
87 | referenced = update; | |
88 | } else if (!strcmp(this_char, MNTOPT_QUOTA) || | |
89 | !strcmp(this_char, MNTOPT_UQUOTA) || | |
90 | !strcmp(this_char, MNTOPT_USRQUOTA)) { | |
91 | args->flags |= XFSMNT_UQUOTA | XFSMNT_UQUOTAENF; | |
92 | referenced = 1; | |
93 | } else if (!strcmp(this_char, MNTOPT_QUOTANOENF) || | |
94 | !strcmp(this_char, MNTOPT_UQUOTANOENF)) { | |
95 | args->flags |= XFSMNT_UQUOTA; | |
96 | args->flags &= ~XFSMNT_UQUOTAENF; | |
97 | referenced = 1; | |
c8ad20ff NS |
98 | } else if (!strcmp(this_char, MNTOPT_PQUOTA) || |
99 | !strcmp(this_char, MNTOPT_PRJQUOTA)) { | |
100 | args->flags |= XFSMNT_PQUOTA | XFSMNT_PQUOTAENF; | |
101 | referenced = 1; | |
102 | } else if (!strcmp(this_char, MNTOPT_PQUOTANOENF)) { | |
103 | args->flags |= XFSMNT_PQUOTA; | |
104 | args->flags &= ~XFSMNT_PQUOTAENF; | |
105 | referenced = 1; | |
1da177e4 LT |
106 | } else if (!strcmp(this_char, MNTOPT_GQUOTA) || |
107 | !strcmp(this_char, MNTOPT_GRPQUOTA)) { | |
108 | args->flags |= XFSMNT_GQUOTA | XFSMNT_GQUOTAENF; | |
109 | referenced = 1; | |
110 | } else if (!strcmp(this_char, MNTOPT_GQUOTANOENF)) { | |
111 | args->flags |= XFSMNT_GQUOTA; | |
112 | args->flags &= ~XFSMNT_GQUOTAENF; | |
113 | referenced = 1; | |
114 | } else { | |
115 | if (local_options) | |
116 | *(local_options-1) = ','; | |
117 | continue; | |
118 | } | |
119 | ||
120 | while (length--) | |
121 | *this_char++ = ','; | |
122 | } | |
123 | ||
c8ad20ff NS |
124 | if ((args->flags & XFSMNT_GQUOTA) && (args->flags & XFSMNT_PQUOTA)) { |
125 | cmn_err(CE_WARN, | |
126 | "XFS: cannot mount with both project and group quota"); | |
127 | return XFS_ERROR(EINVAL); | |
128 | } | |
129 | ||
b83bd138 | 130 | error = bhv_next_vfs_parseargs(BHV_NEXT(bhv), options, args, update); |
1da177e4 LT |
131 | if (!error && !referenced) |
132 | bhv_remove_vfsops(bhvtovfs(bhv), VFS_POSITION_QM); | |
133 | return error; | |
134 | } | |
135 | ||
136 | STATIC int | |
137 | xfs_qm_showargs( | |
138 | struct bhv_desc *bhv, | |
139 | struct seq_file *m) | |
140 | { | |
b83bd138 | 141 | struct bhv_vfs *vfsp = bhvtovfs(bhv); |
1da177e4 | 142 | struct xfs_mount *mp = XFS_VFSTOM(vfsp); |
1da177e4 LT |
143 | |
144 | if (mp->m_qflags & XFS_UQUOTA_ACCT) { | |
145 | (mp->m_qflags & XFS_UQUOTA_ENFD) ? | |
146 | seq_puts(m, "," MNTOPT_USRQUOTA) : | |
147 | seq_puts(m, "," MNTOPT_UQUOTANOENF); | |
148 | } | |
149 | ||
c8ad20ff NS |
150 | if (mp->m_qflags & XFS_PQUOTA_ACCT) { |
151 | (mp->m_qflags & XFS_OQUOTA_ENFD) ? | |
152 | seq_puts(m, "," MNTOPT_PRJQUOTA) : | |
153 | seq_puts(m, "," MNTOPT_PQUOTANOENF); | |
154 | } | |
155 | ||
1da177e4 | 156 | if (mp->m_qflags & XFS_GQUOTA_ACCT) { |
c8ad20ff | 157 | (mp->m_qflags & XFS_OQUOTA_ENFD) ? |
1da177e4 LT |
158 | seq_puts(m, "," MNTOPT_GRPQUOTA) : |
159 | seq_puts(m, "," MNTOPT_GQUOTANOENF); | |
160 | } | |
161 | ||
c8ad20ff | 162 | if (!(mp->m_qflags & XFS_ALL_QUOTA_ACCT)) |
1da177e4 LT |
163 | seq_puts(m, "," MNTOPT_NOQUOTA); |
164 | ||
b83bd138 | 165 | return bhv_next_vfs_showargs(BHV_NEXT(bhv), m); |
1da177e4 LT |
166 | } |
167 | ||
168 | STATIC int | |
169 | xfs_qm_mount( | |
170 | struct bhv_desc *bhv, | |
171 | struct xfs_mount_args *args, | |
172 | struct cred *cr) | |
173 | { | |
b83bd138 | 174 | struct bhv_vfs *vfsp = bhvtovfs(bhv); |
1da177e4 | 175 | struct xfs_mount *mp = XFS_VFSTOM(vfsp); |
1da177e4 | 176 | |
c8ad20ff | 177 | if (args->flags & (XFSMNT_UQUOTA | XFSMNT_GQUOTA | XFSMNT_PQUOTA)) |
1da177e4 | 178 | xfs_qm_mount_quotainit(mp, args->flags); |
b83bd138 | 179 | return bhv_next_vfs_mount(BHV_NEXT(bhv), args, cr); |
1da177e4 LT |
180 | } |
181 | ||
932f2c32 NS |
182 | /* |
183 | * Directory tree accounting is implemented using project quotas, where | |
184 | * the project identifier is inherited from parent directories. | |
185 | * A statvfs (df, etc.) of a directory that is using project quota should | |
186 | * return a statvfs of the project, not the entire filesystem. | |
187 | * This makes such trees appear as if they are filesystems in themselves. | |
188 | */ | |
189 | STATIC int | |
190 | xfs_qm_statvfs( | |
191 | struct bhv_desc *bhv, | |
8285fb58 | 192 | bhv_statvfs_t *statp, |
67fcaa73 | 193 | struct bhv_vnode *vnode) |
932f2c32 NS |
194 | { |
195 | xfs_mount_t *mp; | |
196 | xfs_inode_t *ip; | |
197 | xfs_dquot_t *dqp; | |
198 | xfs_disk_dquot_t *dp; | |
199 | __uint64_t limit; | |
200 | int error; | |
201 | ||
b83bd138 | 202 | error = bhv_next_vfs_statvfs(BHV_NEXT(bhv), statp, vnode); |
932f2c32 NS |
203 | if (error || !vnode) |
204 | return error; | |
205 | ||
0edc7d0f | 206 | mp = xfs_vfstom(bhvtovfs(bhv)); |
932f2c32 NS |
207 | ip = xfs_vtoi(vnode); |
208 | ||
209 | if (!(ip->i_d.di_flags & XFS_DIFLAG_PROJINHERIT)) | |
210 | return 0; | |
211 | if (!(mp->m_qflags & XFS_PQUOTA_ACCT)) | |
212 | return 0; | |
213 | if (!(mp->m_qflags & XFS_OQUOTA_ENFD)) | |
214 | return 0; | |
215 | ||
216 | if (xfs_qm_dqget(mp, NULL, ip->i_d.di_projid, XFS_DQ_PROJ, 0, &dqp)) | |
217 | return 0; | |
218 | dp = &dqp->q_core; | |
219 | ||
2a293b7d CH |
220 | limit = dp->d_blk_softlimit ? |
221 | be64_to_cpu(dp->d_blk_softlimit) : | |
222 | be64_to_cpu(dp->d_blk_hardlimit); | |
932f2c32 NS |
223 | if (limit && statp->f_blocks > limit) { |
224 | statp->f_blocks = limit; | |
2a293b7d CH |
225 | statp->f_bfree = |
226 | (statp->f_blocks > be64_to_cpu(dp->d_bcount)) ? | |
227 | (statp->f_blocks - be64_to_cpu(dp->d_bcount)) : 0; | |
932f2c32 | 228 | } |
2a293b7d CH |
229 | |
230 | limit = dp->d_ino_softlimit ? | |
231 | be64_to_cpu(dp->d_ino_softlimit) : | |
232 | be64_to_cpu(dp->d_ino_hardlimit); | |
932f2c32 NS |
233 | if (limit && statp->f_files > limit) { |
234 | statp->f_files = limit; | |
2a293b7d CH |
235 | statp->f_ffree = |
236 | (statp->f_files > be64_to_cpu(dp->d_icount)) ? | |
237 | (statp->f_ffree - be64_to_cpu(dp->d_icount)) : 0; | |
932f2c32 NS |
238 | } |
239 | ||
240 | xfs_qm_dqput(dqp); | |
241 | return 0; | |
242 | } | |
243 | ||
1da177e4 LT |
244 | STATIC int |
245 | xfs_qm_syncall( | |
246 | struct bhv_desc *bhv, | |
247 | int flags, | |
248 | cred_t *credp) | |
249 | { | |
b83bd138 | 250 | struct bhv_vfs *vfsp = bhvtovfs(bhv); |
1da177e4 LT |
251 | struct xfs_mount *mp = XFS_VFSTOM(vfsp); |
252 | int error; | |
253 | ||
254 | /* | |
255 | * Get the Quota Manager to flush the dquots. | |
256 | */ | |
257 | if (XFS_IS_QUOTA_ON(mp)) { | |
258 | if ((error = xfs_qm_sync(mp, flags))) { | |
259 | /* | |
260 | * If we got an IO error, we will be shutting down. | |
261 | * So, there's nothing more for us to do here. | |
262 | */ | |
263 | ASSERT(error != EIO || XFS_FORCED_SHUTDOWN(mp)); | |
264 | if (XFS_FORCED_SHUTDOWN(mp)) { | |
265 | return XFS_ERROR(error); | |
266 | } | |
267 | } | |
268 | } | |
b83bd138 | 269 | return bhv_next_vfs_sync(BHV_NEXT(bhv), flags, credp); |
1da177e4 LT |
270 | } |
271 | ||
1da177e4 LT |
272 | STATIC int |
273 | xfs_qm_newmount( | |
274 | xfs_mount_t *mp, | |
275 | uint *needquotamount, | |
276 | uint *quotaflags) | |
277 | { | |
278 | uint quotaondisk; | |
c8ad20ff | 279 | uint uquotaondisk = 0, gquotaondisk = 0, pquotaondisk = 0; |
1da177e4 LT |
280 | |
281 | *quotaflags = 0; | |
282 | *needquotamount = B_FALSE; | |
283 | ||
284 | quotaondisk = XFS_SB_VERSION_HASQUOTA(&mp->m_sb) && | |
c8ad20ff | 285 | (mp->m_sb.sb_qflags & XFS_ALL_QUOTA_ACCT); |
1da177e4 LT |
286 | |
287 | if (quotaondisk) { | |
288 | uquotaondisk = mp->m_sb.sb_qflags & XFS_UQUOTA_ACCT; | |
c8ad20ff | 289 | pquotaondisk = mp->m_sb.sb_qflags & XFS_PQUOTA_ACCT; |
1da177e4 LT |
290 | gquotaondisk = mp->m_sb.sb_qflags & XFS_GQUOTA_ACCT; |
291 | } | |
292 | ||
293 | /* | |
294 | * If the device itself is read-only, we can't allow | |
295 | * the user to change the state of quota on the mount - | |
296 | * this would generate a transaction on the ro device, | |
297 | * which would lead to an I/O error and shutdown | |
298 | */ | |
299 | ||
300 | if (((uquotaondisk && !XFS_IS_UQUOTA_ON(mp)) || | |
301 | (!uquotaondisk && XFS_IS_UQUOTA_ON(mp)) || | |
c8ad20ff NS |
302 | (pquotaondisk && !XFS_IS_PQUOTA_ON(mp)) || |
303 | (!pquotaondisk && XFS_IS_PQUOTA_ON(mp)) || | |
1da177e4 | 304 | (gquotaondisk && !XFS_IS_GQUOTA_ON(mp)) || |
c8ad20ff | 305 | (!gquotaondisk && XFS_IS_OQUOTA_ON(mp))) && |
1da177e4 LT |
306 | xfs_dev_is_read_only(mp, "changing quota state")) { |
307 | cmn_err(CE_WARN, | |
c8ad20ff | 308 | "XFS: please mount with%s%s%s%s.", |
1da177e4 LT |
309 | (!quotaondisk ? "out quota" : ""), |
310 | (uquotaondisk ? " usrquota" : ""), | |
c8ad20ff | 311 | (pquotaondisk ? " prjquota" : ""), |
1da177e4 LT |
312 | (gquotaondisk ? " grpquota" : "")); |
313 | return XFS_ERROR(EPERM); | |
314 | } | |
315 | ||
316 | if (XFS_IS_QUOTA_ON(mp) || quotaondisk) { | |
317 | /* | |
318 | * Call mount_quotas at this point only if we won't have to do | |
319 | * a quotacheck. | |
320 | */ | |
321 | if (quotaondisk && !XFS_QM_NEED_QUOTACHECK(mp)) { | |
322 | /* | |
323 | * If an error occured, qm_mount_quotas code | |
324 | * has already disabled quotas. So, just finish | |
325 | * mounting, and get on with the boring life | |
326 | * without disk quotas. | |
327 | */ | |
328 | xfs_qm_mount_quotas(mp, 0); | |
329 | } else { | |
330 | /* | |
331 | * Clear the quota flags, but remember them. This | |
332 | * is so that the quota code doesn't get invoked | |
333 | * before we're ready. This can happen when an | |
334 | * inode goes inactive and wants to free blocks, | |
335 | * or via xfs_log_mount_finish. | |
336 | */ | |
337 | *needquotamount = B_TRUE; | |
338 | *quotaflags = mp->m_qflags; | |
339 | mp->m_qflags = 0; | |
340 | } | |
341 | } | |
342 | ||
343 | return 0; | |
344 | } | |
345 | ||
346 | STATIC int | |
347 | xfs_qm_endmount( | |
348 | xfs_mount_t *mp, | |
349 | uint needquotamount, | |
350 | uint quotaflags, | |
351 | int mfsi_flags) | |
352 | { | |
353 | if (needquotamount) { | |
354 | ASSERT(mp->m_qflags == 0); | |
355 | mp->m_qflags = quotaflags; | |
356 | xfs_qm_mount_quotas(mp, mfsi_flags); | |
357 | } | |
358 | ||
359 | #if defined(DEBUG) && defined(XFS_LOUD_RECOVERY) | |
360 | if (! (XFS_IS_QUOTA_ON(mp))) | |
361 | xfs_fs_cmn_err(CE_NOTE, mp, "Disk quotas not turned on"); | |
362 | else | |
363 | xfs_fs_cmn_err(CE_NOTE, mp, "Disk quotas turned on"); | |
364 | #endif | |
365 | ||
366 | #ifdef QUOTADEBUG | |
367 | if (XFS_IS_QUOTA_ON(mp) && xfs_qm_internalqcheck(mp)) | |
368 | cmn_err(CE_WARN, "XFS: mount internalqcheck failed"); | |
369 | #endif | |
370 | ||
371 | return 0; | |
372 | } | |
373 | ||
374 | STATIC void | |
375 | xfs_qm_dqrele_null( | |
376 | xfs_dquot_t *dq) | |
377 | { | |
378 | /* | |
379 | * Called from XFS, where we always check first for a NULL dquot. | |
380 | */ | |
381 | if (!dq) | |
382 | return; | |
383 | xfs_qm_dqrele(dq); | |
384 | } | |
385 | ||
386 | ||
ba0f32d4 | 387 | STATIC struct xfs_qmops xfs_qmcore_xfs = { |
1da177e4 LT |
388 | .xfs_qminit = xfs_qm_newmount, |
389 | .xfs_qmdone = xfs_qm_unmount_quotadestroy, | |
390 | .xfs_qmmount = xfs_qm_endmount, | |
391 | .xfs_qmunmount = xfs_qm_unmount_quotas, | |
392 | .xfs_dqrele = xfs_qm_dqrele_null, | |
393 | .xfs_dqattach = xfs_qm_dqattach, | |
394 | .xfs_dqdetach = xfs_qm_dqdetach, | |
395 | .xfs_dqpurgeall = xfs_qm_dqpurge_all, | |
396 | .xfs_dqvopalloc = xfs_qm_vop_dqalloc, | |
397 | .xfs_dqvopcreate = xfs_qm_vop_dqattach_and_dqmod_newinode, | |
398 | .xfs_dqvoprename = xfs_qm_vop_rename_dqattach, | |
399 | .xfs_dqvopchown = xfs_qm_vop_chown, | |
400 | .xfs_dqvopchownresv = xfs_qm_vop_chown_reserve, | |
401 | .xfs_dqtrxops = &xfs_trans_dquot_ops, | |
402 | }; | |
403 | ||
b83bd138 | 404 | struct bhv_module_vfsops xfs_qmops = { { |
1da177e4 LT |
405 | BHV_IDENTITY_INIT(VFS_BHV_QM, VFS_POSITION_QM), |
406 | .vfs_parseargs = xfs_qm_parseargs, | |
407 | .vfs_showargs = xfs_qm_showargs, | |
408 | .vfs_mount = xfs_qm_mount, | |
932f2c32 | 409 | .vfs_statvfs = xfs_qm_statvfs, |
1da177e4 LT |
410 | .vfs_sync = xfs_qm_syncall, |
411 | .vfs_quotactl = xfs_qm_quotactl, }, | |
412 | }; | |
413 | ||
414 | ||
415 | void __init | |
416 | xfs_qm_init(void) | |
417 | { | |
418 | static char message[] __initdata = | |
419 | KERN_INFO "SGI XFS Quota Management subsystem\n"; | |
420 | ||
421 | printk(message); | |
794ee1ba | 422 | mutex_init(&xfs_Gqm_lock); |
1da177e4 LT |
423 | vfs_bhv_set_custom(&xfs_qmops, &xfs_qmcore_xfs); |
424 | xfs_qm_init_procfs(); | |
425 | } | |
426 | ||
427 | void __exit | |
428 | xfs_qm_exit(void) | |
429 | { | |
430 | vfs_bhv_clr_custom(&xfs_qmops); | |
431 | xfs_qm_cleanup_procfs(); | |
432 | if (qm_dqzone) | |
3758dee9 | 433 | kmem_zone_destroy(qm_dqzone); |
1da177e4 | 434 | if (qm_dqtrxzone) |
3758dee9 | 435 | kmem_zone_destroy(qm_dqtrxzone); |
1da177e4 | 436 | } |