Commit | Line | Data |
---|---|---|
b3b94faa DT |
1 | /* |
2 | * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved. | |
ca390601 | 3 | * Copyright (C) 2004-2008 Red Hat, Inc. All rights reserved. |
b3b94faa DT |
4 | * |
5 | * This copyrighted material is made available to anyone wishing to use, | |
6 | * modify, copy, or redistribute it subject to the terms and conditions | |
e9fc2aa0 | 7 | * of the GNU General Public License version 2. |
b3b94faa DT |
8 | */ |
9 | ||
10 | #include <linux/sched.h> | |
11 | #include <linux/slab.h> | |
12 | #include <linux/spinlock.h> | |
13 | #include <linux/completion.h> | |
14 | #include <linux/buffer_head.h> | |
15 | #include <linux/posix_acl.h> | |
16 | #include <linux/sort.h> | |
5c676f6d | 17 | #include <linux/gfs2_ondisk.h> |
71b86f56 | 18 | #include <linux/crc32.h> |
fcb47e0b | 19 | #include <linux/security.h> |
719ee344 | 20 | #include <linux/time.h> |
b3b94faa DT |
21 | |
22 | #include "gfs2.h" | |
5c676f6d | 23 | #include "incore.h" |
b3b94faa DT |
24 | #include "acl.h" |
25 | #include "bmap.h" | |
26 | #include "dir.h" | |
307cf6e6 | 27 | #include "xattr.h" |
b3b94faa DT |
28 | #include "glock.h" |
29 | #include "glops.h" | |
30 | #include "inode.h" | |
31 | #include "log.h" | |
32 | #include "meta_io.h" | |
b3b94faa DT |
33 | #include "quota.h" |
34 | #include "rgrp.h" | |
35 | #include "trans.h" | |
5c676f6d | 36 | #include "util.h" |
b3b94faa | 37 | |
bb8d8a6f SW |
38 | struct gfs2_inum_range_host { |
39 | u64 ir_start; | |
40 | u64 ir_length; | |
41 | }; | |
42 | ||
feaa7bba SW |
43 | static int iget_test(struct inode *inode, void *opaque) |
44 | { | |
45 | struct gfs2_inode *ip = GFS2_I(inode); | |
dbb7cae2 | 46 | u64 *no_addr = opaque; |
feaa7bba | 47 | |
009d8518 | 48 | if (ip->i_no_addr == *no_addr) |
feaa7bba | 49 | return 1; |
b3b94faa | 50 | |
feaa7bba SW |
51 | return 0; |
52 | } | |
53 | ||
54 | static int iget_set(struct inode *inode, void *opaque) | |
b3b94faa | 55 | { |
feaa7bba | 56 | struct gfs2_inode *ip = GFS2_I(inode); |
dbb7cae2 | 57 | u64 *no_addr = opaque; |
b3b94faa | 58 | |
dbb7cae2 SW |
59 | inode->i_ino = (unsigned long)*no_addr; |
60 | ip->i_no_addr = *no_addr; | |
feaa7bba SW |
61 | return 0; |
62 | } | |
b3b94faa | 63 | |
dbb7cae2 | 64 | struct inode *gfs2_ilookup(struct super_block *sb, u64 no_addr) |
feaa7bba | 65 | { |
dbb7cae2 SW |
66 | unsigned long hash = (unsigned long)no_addr; |
67 | return ilookup5(sb, hash, iget_test, &no_addr); | |
feaa7bba | 68 | } |
b3b94faa | 69 | |
dbb7cae2 | 70 | static struct inode *gfs2_iget(struct super_block *sb, u64 no_addr) |
feaa7bba | 71 | { |
dbb7cae2 SW |
72 | unsigned long hash = (unsigned long)no_addr; |
73 | return iget5_locked(sb, hash, iget_test, iget_set, &no_addr); | |
b3b94faa DT |
74 | } |
75 | ||
35dcc52e WC |
76 | /** |
77 | * GFS2 lookup code fills in vfs inode contents based on info obtained | |
78 | * from directory entry inside gfs2_inode_lookup(). This has caused issues | |
79 | * with NFS code path since its get_dentry routine doesn't have the relevant | |
80 | * directory entry when gfs2_inode_lookup() is invoked. Part of the code | |
81 | * segment inside gfs2_inode_lookup code needs to get moved around. | |
82 | * | |
eaff8079 | 83 | * Clears I_NEW as well. |
35dcc52e WC |
84 | **/ |
85 | ||
86 | void gfs2_set_iop(struct inode *inode) | |
87 | { | |
c97bfe43 | 88 | struct gfs2_sbd *sdp = GFS2_SB(inode); |
35dcc52e WC |
89 | umode_t mode = inode->i_mode; |
90 | ||
91 | if (S_ISREG(mode)) { | |
92 | inode->i_op = &gfs2_file_iops; | |
f057f6cd | 93 | if (gfs2_localflocks(sdp)) |
10d21988 | 94 | inode->i_fop = &gfs2_file_fops_nolock; |
c97bfe43 | 95 | else |
10d21988 | 96 | inode->i_fop = &gfs2_file_fops; |
35dcc52e WC |
97 | } else if (S_ISDIR(mode)) { |
98 | inode->i_op = &gfs2_dir_iops; | |
f057f6cd | 99 | if (gfs2_localflocks(sdp)) |
10d21988 | 100 | inode->i_fop = &gfs2_dir_fops_nolock; |
c97bfe43 | 101 | else |
10d21988 | 102 | inode->i_fop = &gfs2_dir_fops; |
35dcc52e WC |
103 | } else if (S_ISLNK(mode)) { |
104 | inode->i_op = &gfs2_symlink_iops; | |
105 | } else { | |
d83225d4 | 106 | inode->i_op = &gfs2_file_iops; |
43a33c53 | 107 | init_special_inode(inode, inode->i_mode, inode->i_rdev); |
35dcc52e WC |
108 | } |
109 | ||
110 | unlock_new_inode(inode); | |
111 | } | |
112 | ||
b3b94faa | 113 | /** |
feaa7bba SW |
114 | * gfs2_inode_lookup - Lookup an inode |
115 | * @sb: The super block | |
dbb7cae2 | 116 | * @no_addr: The inode number |
feaa7bba | 117 | * @type: The type of the inode |
b3b94faa | 118 | * |
feaa7bba | 119 | * Returns: A VFS inode, or an error |
b3b94faa DT |
120 | */ |
121 | ||
091806ed | 122 | struct inode *gfs2_inode_lookup(struct super_block *sb, |
bb9bcf06 WC |
123 | unsigned int type, |
124 | u64 no_addr, | |
1a0eae88 | 125 | u64 no_formal_ino) |
b3b94faa | 126 | { |
7a9f53b3 BM |
127 | struct inode *inode; |
128 | struct gfs2_inode *ip; | |
b1becbde | 129 | struct gfs2_glock *io_gl = NULL; |
feaa7bba | 130 | int error; |
b3b94faa | 131 | |
1a0eae88 | 132 | inode = gfs2_iget(sb, no_addr); |
7a9f53b3 BM |
133 | ip = GFS2_I(inode); |
134 | ||
26d83ded SW |
135 | if (!inode) |
136 | return ERR_PTR(-ENOBUFS); | |
137 | ||
feaa7bba SW |
138 | if (inode->i_state & I_NEW) { |
139 | struct gfs2_sbd *sdp = GFS2_SB(inode); | |
bb9bcf06 | 140 | ip->i_no_formal_ino = no_formal_ino; |
b3b94faa | 141 | |
dbb7cae2 | 142 | error = gfs2_glock_get(sdp, no_addr, &gfs2_inode_glops, CREATE, &ip->i_gl); |
feaa7bba SW |
143 | if (unlikely(error)) |
144 | goto fail; | |
145 | ip->i_gl->gl_object = ip; | |
b3b94faa | 146 | |
dbb7cae2 | 147 | error = gfs2_glock_get(sdp, no_addr, &gfs2_iopen_glops, CREATE, &io_gl); |
feaa7bba SW |
148 | if (unlikely(error)) |
149 | goto fail_put; | |
b3b94faa | 150 | |
bfded27b | 151 | set_bit(GIF_INVALID, &ip->i_flags); |
feaa7bba SW |
152 | error = gfs2_glock_nq_init(io_gl, LM_ST_SHARED, GL_EXACT, &ip->i_iopen_gh); |
153 | if (unlikely(error)) | |
154 | goto fail_iopen; | |
d93cfa98 | 155 | ip->i_iopen_gh.gh_gl->gl_object = ip; |
b3b94faa | 156 | |
feaa7bba | 157 | gfs2_glock_put(io_gl); |
b1becbde | 158 | io_gl = NULL; |
c8cdf479 | 159 | |
35dcc52e WC |
160 | if ((type == DT_UNKNOWN) && (no_formal_ino == 0)) |
161 | goto gfs2_nfsbypass; | |
162 | ||
163 | inode->i_mode = DT2IF(type); | |
164 | ||
c8cdf479 SW |
165 | /* |
166 | * We must read the inode in order to work out its type in | |
167 | * this case. Note that this doesn't happen often as we normally | |
168 | * know the type beforehand. This code path only occurs during | |
169 | * unlinked inode recovery (where it is safe to do this glock, | |
170 | * which is not true in the general case). | |
171 | */ | |
c8cdf479 SW |
172 | if (type == DT_UNKNOWN) { |
173 | struct gfs2_holder gh; | |
174 | error = gfs2_glock_nq_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, &gh); | |
175 | if (unlikely(error)) | |
176 | goto fail_glock; | |
177 | /* Inode is now uptodate */ | |
c8cdf479 SW |
178 | gfs2_glock_dq_uninit(&gh); |
179 | } | |
180 | ||
35dcc52e | 181 | gfs2_set_iop(inode); |
feaa7bba | 182 | } |
b3b94faa | 183 | |
35dcc52e | 184 | gfs2_nfsbypass: |
b3b94faa | 185 | return inode; |
c8cdf479 SW |
186 | fail_glock: |
187 | gfs2_glock_dq(&ip->i_iopen_gh); | |
feaa7bba | 188 | fail_iopen: |
b1becbde BP |
189 | if (io_gl) |
190 | gfs2_glock_put(io_gl); | |
feaa7bba | 191 | fail_put: |
1a0eae88 BP |
192 | if (inode->i_state & I_NEW) |
193 | ip->i_gl->gl_object = NULL; | |
feaa7bba SW |
194 | gfs2_glock_put(ip->i_gl); |
195 | fail: | |
1a0eae88 BP |
196 | if (inode->i_state & I_NEW) |
197 | iget_failed(inode); | |
198 | else | |
199 | iput(inode); | |
feaa7bba | 200 | return ERR_PTR(error); |
b3b94faa DT |
201 | } |
202 | ||
044b9414 SW |
203 | struct inode *gfs2_lookup_by_inum(struct gfs2_sbd *sdp, u64 no_addr, |
204 | u64 *no_formal_ino, unsigned int blktype) | |
1a0eae88 | 205 | { |
044b9414 SW |
206 | struct super_block *sb = sdp->sd_vfs; |
207 | struct gfs2_holder i_gh; | |
ed4878e8 | 208 | struct inode *inode; |
044b9414 | 209 | int error; |
1a0eae88 | 210 | |
044b9414 SW |
211 | error = gfs2_glock_nq_num(sdp, no_addr, &gfs2_inode_glops, |
212 | LM_ST_SHARED, LM_FLAG_ANY, &i_gh); | |
213 | if (error) | |
214 | return ERR_PTR(error); | |
1a0eae88 | 215 | |
044b9414 SW |
216 | error = gfs2_check_blk_type(sdp, no_addr, blktype); |
217 | if (error) | |
1a0eae88 | 218 | goto fail; |
1a0eae88 | 219 | |
044b9414 SW |
220 | inode = gfs2_inode_lookup(sb, DT_UNKNOWN, no_addr, 0); |
221 | if (IS_ERR(inode)) | |
222 | goto fail; | |
ed4878e8 | 223 | |
044b9414 SW |
224 | error = gfs2_inode_refresh(GFS2_I(inode)); |
225 | if (error) | |
226 | goto fail_iput; | |
1a0eae88 | 227 | |
044b9414 SW |
228 | /* Pick up the works we bypass in gfs2_inode_lookup */ |
229 | if (inode->i_state & I_NEW) | |
230 | gfs2_set_iop(inode); | |
1a0eae88 | 231 | |
044b9414 SW |
232 | /* Two extra checks for NFS only */ |
233 | if (no_formal_ino) { | |
234 | error = -ESTALE; | |
235 | if (GFS2_I(inode)->i_no_formal_ino != *no_formal_ino) | |
236 | goto fail_iput; | |
ed4878e8 | 237 | |
044b9414 SW |
238 | error = -EIO; |
239 | if (GFS2_I(inode)->i_diskflags & GFS2_DIF_SYSTEM) | |
240 | goto fail_iput; | |
ed4878e8 | 241 | |
044b9414 SW |
242 | error = 0; |
243 | } | |
1a0eae88 | 244 | |
1a0eae88 | 245 | fail: |
044b9414 SW |
246 | gfs2_glock_dq_uninit(&i_gh); |
247 | return error ? ERR_PTR(error) : inode; | |
248 | fail_iput: | |
249 | iput(inode); | |
250 | goto fail; | |
1a0eae88 BP |
251 | } |
252 | ||
af339c02 | 253 | static int gfs2_dinode_in(struct gfs2_inode *ip, const void *buf) |
ea744d01 | 254 | { |
ea744d01 | 255 | const struct gfs2_dinode *str = buf; |
719ee344 | 256 | struct timespec atime; |
9a004508 | 257 | u16 height, depth; |
ea744d01 | 258 | |
ecc30c79 SW |
259 | if (unlikely(ip->i_no_addr != be64_to_cpu(str->di_num.no_addr))) |
260 | goto corrupt; | |
dbb7cae2 | 261 | ip->i_no_formal_ino = be64_to_cpu(str->di_num.no_formal_ino); |
b60623c2 | 262 | ip->i_inode.i_mode = be32_to_cpu(str->di_mode); |
e7f14f4d | 263 | ip->i_inode.i_rdev = 0; |
b60623c2 | 264 | switch (ip->i_inode.i_mode & S_IFMT) { |
e7f14f4d SW |
265 | case S_IFBLK: |
266 | case S_IFCHR: | |
267 | ip->i_inode.i_rdev = MKDEV(be32_to_cpu(str->di_major), | |
268 | be32_to_cpu(str->di_minor)); | |
269 | break; | |
270 | }; | |
271 | ||
2933f925 SW |
272 | ip->i_inode.i_uid = be32_to_cpu(str->di_uid); |
273 | ip->i_inode.i_gid = be32_to_cpu(str->di_gid); | |
4f56110a SW |
274 | /* |
275 | * We will need to review setting the nlink count here in the | |
276 | * light of the forthcoming ro bind mount work. This is a reminder | |
277 | * to do that. | |
278 | */ | |
279 | ip->i_inode.i_nlink = be32_to_cpu(str->di_nlink); | |
a2e0f799 | 280 | i_size_write(&ip->i_inode, be64_to_cpu(str->di_size)); |
77658aad | 281 | gfs2_set_inode_blocks(&ip->i_inode, be64_to_cpu(str->di_blocks)); |
719ee344 SW |
282 | atime.tv_sec = be64_to_cpu(str->di_atime); |
283 | atime.tv_nsec = be32_to_cpu(str->di_atime_nsec); | |
284 | if (timespec_compare(&ip->i_inode.i_atime, &atime) < 0) | |
285 | ip->i_inode.i_atime = atime; | |
1a7b1eed | 286 | ip->i_inode.i_mtime.tv_sec = be64_to_cpu(str->di_mtime); |
4bd91ba1 | 287 | ip->i_inode.i_mtime.tv_nsec = be32_to_cpu(str->di_mtime_nsec); |
1a7b1eed | 288 | ip->i_inode.i_ctime.tv_sec = be64_to_cpu(str->di_ctime); |
4bd91ba1 | 289 | ip->i_inode.i_ctime.tv_nsec = be32_to_cpu(str->di_ctime_nsec); |
ea744d01 | 290 | |
ce276b06 | 291 | ip->i_goal = be64_to_cpu(str->di_goal_meta); |
bcf0b5b3 | 292 | ip->i_generation = be64_to_cpu(str->di_generation); |
ea744d01 | 293 | |
383f01fb | 294 | ip->i_diskflags = be32_to_cpu(str->di_flags); |
6b124d8d | 295 | gfs2_set_inode_flags(&ip->i_inode); |
ecc30c79 SW |
296 | height = be16_to_cpu(str->di_height); |
297 | if (unlikely(height > GFS2_MAX_META_HEIGHT)) | |
298 | goto corrupt; | |
299 | ip->i_height = (u8)height; | |
ea744d01 | 300 | |
9a004508 SW |
301 | depth = be16_to_cpu(str->di_depth); |
302 | if (unlikely(depth > GFS2_DIR_MAX_DEPTH)) | |
303 | goto corrupt; | |
304 | ip->i_depth = (u8)depth; | |
ad6203f2 | 305 | ip->i_entries = be32_to_cpu(str->di_entries); |
ea744d01 | 306 | |
3767ac21 | 307 | ip->i_eattr = be64_to_cpu(str->di_eattr); |
5561093e SW |
308 | if (S_ISREG(ip->i_inode.i_mode)) |
309 | gfs2_set_aops(&ip->i_inode); | |
310 | ||
af339c02 | 311 | return 0; |
ecc30c79 SW |
312 | corrupt: |
313 | if (gfs2_consist_inode(ip)) | |
314 | gfs2_dinode_print(ip); | |
315 | return -EIO; | |
ea744d01 SW |
316 | } |
317 | ||
b3b94faa DT |
318 | /** |
319 | * gfs2_inode_refresh - Refresh the incore copy of the dinode | |
320 | * @ip: The GFS2 inode | |
321 | * | |
322 | * Returns: errno | |
323 | */ | |
324 | ||
325 | int gfs2_inode_refresh(struct gfs2_inode *ip) | |
326 | { | |
327 | struct buffer_head *dibh; | |
328 | int error; | |
329 | ||
330 | error = gfs2_meta_inode_buffer(ip, &dibh); | |
331 | if (error) | |
332 | return error; | |
333 | ||
feaa7bba | 334 | if (gfs2_metatype_check(GFS2_SB(&ip->i_inode), dibh, GFS2_METATYPE_DI)) { |
b3b94faa DT |
335 | brelse(dibh); |
336 | return -EIO; | |
337 | } | |
338 | ||
af339c02 | 339 | error = gfs2_dinode_in(ip, dibh->b_data); |
b3b94faa | 340 | brelse(dibh); |
bfded27b | 341 | clear_bit(GIF_INVALID, &ip->i_flags); |
b3b94faa | 342 | |
af339c02 | 343 | return error; |
b3b94faa DT |
344 | } |
345 | ||
feaa7bba | 346 | int gfs2_dinode_dealloc(struct gfs2_inode *ip) |
b3b94faa | 347 | { |
feaa7bba | 348 | struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode); |
b3b94faa DT |
349 | struct gfs2_alloc *al; |
350 | struct gfs2_rgrpd *rgd; | |
351 | int error; | |
352 | ||
77658aad | 353 | if (gfs2_get_inode_blocks(&ip->i_inode) != 1) { |
b3b94faa | 354 | if (gfs2_consist_inode(ip)) |
4cc14f0b | 355 | gfs2_dinode_print(ip); |
b3b94faa DT |
356 | return -EIO; |
357 | } | |
358 | ||
359 | al = gfs2_alloc_get(ip); | |
182fe5ab CG |
360 | if (!al) |
361 | return -ENOMEM; | |
b3b94faa DT |
362 | |
363 | error = gfs2_quota_hold(ip, NO_QUOTA_CHANGE, NO_QUOTA_CHANGE); | |
364 | if (error) | |
365 | goto out; | |
366 | ||
367 | error = gfs2_rindex_hold(sdp, &al->al_ri_gh); | |
368 | if (error) | |
369 | goto out_qs; | |
370 | ||
dbb7cae2 | 371 | rgd = gfs2_blk2rgrpd(sdp, ip->i_no_addr); |
b3b94faa DT |
372 | if (!rgd) { |
373 | gfs2_consist_inode(ip); | |
374 | error = -EIO; | |
375 | goto out_rindex_relse; | |
376 | } | |
377 | ||
378 | error = gfs2_glock_nq_init(rgd->rd_gl, LM_ST_EXCLUSIVE, 0, | |
379 | &al->al_rgd_gh); | |
380 | if (error) | |
381 | goto out_rindex_relse; | |
382 | ||
420b9e5e | 383 | error = gfs2_trans_begin(sdp, RES_RG_BIT + RES_STATFS + RES_QUOTA, 1); |
b3b94faa DT |
384 | if (error) |
385 | goto out_rg_gunlock; | |
386 | ||
2bcd610d SW |
387 | set_bit(GLF_DIRTY, &ip->i_gl->gl_flags); |
388 | set_bit(GLF_LFLUSH, &ip->i_gl->gl_flags); | |
b3b94faa DT |
389 | |
390 | gfs2_free_di(rgd, ip); | |
391 | ||
b3b94faa | 392 | gfs2_trans_end(sdp); |
b3b94faa | 393 | |
feaa7bba | 394 | out_rg_gunlock: |
b3b94faa | 395 | gfs2_glock_dq_uninit(&al->al_rgd_gh); |
feaa7bba | 396 | out_rindex_relse: |
b3b94faa | 397 | gfs2_glock_dq_uninit(&al->al_ri_gh); |
feaa7bba | 398 | out_qs: |
b3b94faa | 399 | gfs2_quota_unhold(ip); |
36327521 | 400 | out: |
feaa7bba | 401 | gfs2_alloc_put(ip); |
b3b94faa DT |
402 | return error; |
403 | } | |
404 | ||
b3b94faa | 405 | /** |
87d21e07 | 406 | * gfs2_change_nlink - Change nlink count on inode |
b3b94faa DT |
407 | * @ip: The GFS2 inode |
408 | * @diff: The change in the nlink count required | |
409 | * | |
410 | * Returns: errno | |
411 | */ | |
87d21e07 | 412 | int gfs2_change_nlink(struct gfs2_inode *ip, int diff) |
b3b94faa DT |
413 | { |
414 | struct buffer_head *dibh; | |
cd915493 | 415 | u32 nlink; |
b3b94faa DT |
416 | int error; |
417 | ||
4f56110a SW |
418 | BUG_ON(diff != 1 && diff != -1); |
419 | nlink = ip->i_inode.i_nlink + diff; | |
b3b94faa DT |
420 | |
421 | /* If we are reducing the nlink count, but the new value ends up being | |
422 | bigger than the old one, we must have underflowed. */ | |
4f56110a | 423 | if (diff < 0 && nlink > ip->i_inode.i_nlink) { |
b3b94faa | 424 | if (gfs2_consist_inode(ip)) |
4cc14f0b | 425 | gfs2_dinode_print(ip); |
b3b94faa DT |
426 | return -EIO; |
427 | } | |
428 | ||
429 | error = gfs2_meta_inode_buffer(ip, &dibh); | |
430 | if (error) | |
431 | return error; | |
432 | ||
4f56110a SW |
433 | if (diff > 0) |
434 | inc_nlink(&ip->i_inode); | |
435 | else | |
436 | drop_nlink(&ip->i_inode); | |
437 | ||
4bd91ba1 | 438 | ip->i_inode.i_ctime = CURRENT_TIME; |
b3b94faa | 439 | |
d4e9c4c3 | 440 | gfs2_trans_add_bh(ip->i_gl, dibh, 1); |
539e5d6b | 441 | gfs2_dinode_out(ip, dibh->b_data); |
b3b94faa | 442 | brelse(dibh); |
feaa7bba | 443 | mark_inode_dirty(&ip->i_inode); |
b3b94faa | 444 | |
87d21e07 | 445 | if (ip->i_inode.i_nlink == 0) |
ddee7608 | 446 | gfs2_unlink_di(&ip->i_inode); /* mark inode unlinked */ |
87d21e07 | 447 | |
5509826f WC |
448 | return error; |
449 | } | |
450 | ||
c752666c SW |
451 | struct inode *gfs2_lookup_simple(struct inode *dip, const char *name) |
452 | { | |
453 | struct qstr qstr; | |
6c93fd1e | 454 | struct inode *inode; |
71b86f56 | 455 | gfs2_str2qstr(&qstr, name); |
a569c711 | 456 | inode = gfs2_lookupi(dip, &qstr, 1); |
6c93fd1e RC |
457 | /* gfs2_lookupi has inconsistent callers: vfs |
458 | * related routines expect NULL for no entry found, | |
459 | * gfs2_lookup_simple callers expect ENOENT | |
460 | * and do not check for NULL. | |
461 | */ | |
462 | if (inode == NULL) | |
463 | return ERR_PTR(-ENOENT); | |
464 | else | |
465 | return inode; | |
c752666c SW |
466 | } |
467 | ||
468 | ||
b3b94faa DT |
469 | /** |
470 | * gfs2_lookupi - Look up a filename in a directory and return its inode | |
471 | * @d_gh: An initialized holder for the directory glock | |
472 | * @name: The name of the inode to look for | |
473 | * @is_root: If 1, ignore the caller's permissions | |
474 | * @i_gh: An uninitialized holder for the new inode glock | |
475 | * | |
d7c103d0 SW |
476 | * This can be called via the VFS filldir function when NFS is doing |
477 | * a readdirplus and the inode which its intending to stat isn't | |
478 | * already in cache. In this case we must not take the directory glock | |
479 | * again, since the readdir call will have already taken that lock. | |
b3b94faa DT |
480 | * |
481 | * Returns: errno | |
482 | */ | |
483 | ||
feaa7bba | 484 | struct inode *gfs2_lookupi(struct inode *dir, const struct qstr *name, |
a569c711 | 485 | int is_root) |
b3b94faa | 486 | { |
c9fd4307 | 487 | struct super_block *sb = dir->i_sb; |
feaa7bba | 488 | struct gfs2_inode *dip = GFS2_I(dir); |
b3b94faa | 489 | struct gfs2_holder d_gh; |
037bcbb7 | 490 | int error = 0; |
c752666c | 491 | struct inode *inode = NULL; |
d7c103d0 | 492 | int unlock = 0; |
b3b94faa DT |
493 | |
494 | if (!name->len || name->len > GFS2_FNAMESIZE) | |
c752666c | 495 | return ERR_PTR(-ENAMETOOLONG); |
b3b94faa | 496 | |
c752666c SW |
497 | if ((name->len == 1 && memcmp(name->name, ".", 1) == 0) || |
498 | (name->len == 2 && memcmp(name->name, "..", 2) == 0 && | |
499 | dir == sb->s_root->d_inode)) { | |
320dd101 SW |
500 | igrab(dir); |
501 | return dir; | |
b3b94faa DT |
502 | } |
503 | ||
7afd88d9 | 504 | if (gfs2_glock_is_locked_by_me(dip->i_gl) == NULL) { |
d7c103d0 SW |
505 | error = gfs2_glock_nq_init(dip->i_gl, LM_ST_SHARED, 0, &d_gh); |
506 | if (error) | |
507 | return ERR_PTR(error); | |
508 | unlock = 1; | |
509 | } | |
b3b94faa DT |
510 | |
511 | if (!is_root) { | |
b74c79e9 | 512 | error = gfs2_permission(dir, MAY_EXEC, 0); |
b3b94faa DT |
513 | if (error) |
514 | goto out; | |
515 | } | |
516 | ||
dbb7cae2 SW |
517 | inode = gfs2_dir_search(dir, name); |
518 | if (IS_ERR(inode)) | |
519 | error = PTR_ERR(inode); | |
7359a19c | 520 | out: |
d7c103d0 SW |
521 | if (unlock) |
522 | gfs2_glock_dq_uninit(&d_gh); | |
c752666c SW |
523 | if (error == -ENOENT) |
524 | return NULL; | |
d7c103d0 | 525 | return inode ? inode : ERR_PTR(error); |
b3b94faa DT |
526 | } |
527 | ||
b3b94faa DT |
528 | /** |
529 | * create_ok - OK to create a new on-disk inode here? | |
530 | * @dip: Directory in which dinode is to be created | |
531 | * @name: Name of new dinode | |
532 | * @mode: | |
533 | * | |
534 | * Returns: errno | |
535 | */ | |
536 | ||
feaa7bba | 537 | static int create_ok(struct gfs2_inode *dip, const struct qstr *name, |
b3b94faa DT |
538 | unsigned int mode) |
539 | { | |
540 | int error; | |
541 | ||
b74c79e9 | 542 | error = gfs2_permission(&dip->i_inode, MAY_WRITE | MAY_EXEC, 0); |
b3b94faa DT |
543 | if (error) |
544 | return error; | |
545 | ||
546 | /* Don't create entries in an unlinked directory */ | |
4f56110a | 547 | if (!dip->i_inode.i_nlink) |
b3b94faa DT |
548 | return -EPERM; |
549 | ||
dbb7cae2 | 550 | error = gfs2_dir_check(&dip->i_inode, name, NULL); |
b3b94faa DT |
551 | switch (error) { |
552 | case -ENOENT: | |
553 | error = 0; | |
554 | break; | |
555 | case 0: | |
556 | return -EEXIST; | |
557 | default: | |
558 | return error; | |
559 | } | |
560 | ||
ad6203f2 | 561 | if (dip->i_entries == (u32)-1) |
b3b94faa | 562 | return -EFBIG; |
4f56110a | 563 | if (S_ISDIR(mode) && dip->i_inode.i_nlink == (u32)-1) |
b3b94faa DT |
564 | return -EMLINK; |
565 | ||
566 | return 0; | |
567 | } | |
568 | ||
569 | static void munge_mode_uid_gid(struct gfs2_inode *dip, unsigned int *mode, | |
570 | unsigned int *uid, unsigned int *gid) | |
571 | { | |
feaa7bba | 572 | if (GFS2_SB(&dip->i_inode)->sd_args.ar_suiddir && |
2933f925 | 573 | (dip->i_inode.i_mode & S_ISUID) && dip->i_inode.i_uid) { |
b3b94faa DT |
574 | if (S_ISDIR(*mode)) |
575 | *mode |= S_ISUID; | |
3de7be33 | 576 | else if (dip->i_inode.i_uid != current_fsuid()) |
b3b94faa | 577 | *mode &= ~07111; |
2933f925 | 578 | *uid = dip->i_inode.i_uid; |
b3b94faa | 579 | } else |
3de7be33 | 580 | *uid = current_fsuid(); |
b3b94faa | 581 | |
b60623c2 | 582 | if (dip->i_inode.i_mode & S_ISGID) { |
b3b94faa DT |
583 | if (S_ISDIR(*mode)) |
584 | *mode |= S_ISGID; | |
2933f925 | 585 | *gid = dip->i_inode.i_gid; |
b3b94faa | 586 | } else |
3de7be33 | 587 | *gid = current_fsgid(); |
b3b94faa DT |
588 | } |
589 | ||
dbb7cae2 | 590 | static int alloc_dinode(struct gfs2_inode *dip, u64 *no_addr, u64 *generation) |
b3b94faa | 591 | { |
feaa7bba | 592 | struct gfs2_sbd *sdp = GFS2_SB(&dip->i_inode); |
b3b94faa DT |
593 | int error; |
594 | ||
6dbd8224 SW |
595 | if (gfs2_alloc_get(dip) == NULL) |
596 | return -ENOMEM; | |
b3b94faa | 597 | |
6dbd8224 | 598 | dip->i_alloc->al_requested = RES_DINODE; |
b3b94faa DT |
599 | error = gfs2_inplace_reserve(dip); |
600 | if (error) | |
601 | goto out; | |
602 | ||
feaa7bba | 603 | error = gfs2_trans_begin(sdp, RES_RG_BIT + RES_STATFS, 0); |
b3b94faa DT |
604 | if (error) |
605 | goto out_ipreserv; | |
606 | ||
6050b9c7 | 607 | error = gfs2_alloc_di(dip, no_addr, generation); |
b3b94faa DT |
608 | |
609 | gfs2_trans_end(sdp); | |
610 | ||
4340fe62 | 611 | out_ipreserv: |
b3b94faa | 612 | gfs2_inplace_release(dip); |
4340fe62 | 613 | out: |
b3b94faa | 614 | gfs2_alloc_put(dip); |
b3b94faa DT |
615 | return error; |
616 | } | |
617 | ||
618 | /** | |
619 | * init_dinode - Fill in a new dinode structure | |
620 | * @dip: the directory this inode is being created in | |
621 | * @gl: The glock covering the new inode | |
622 | * @inum: the inode number | |
623 | * @mode: the file permissions | |
624 | * @uid: | |
625 | * @gid: | |
626 | * | |
627 | */ | |
628 | ||
629 | static void init_dinode(struct gfs2_inode *dip, struct gfs2_glock *gl, | |
629a21e7 | 630 | const struct gfs2_inum_host *inum, unsigned int mode, |
4340fe62 | 631 | unsigned int uid, unsigned int gid, |
e9bd2b3b | 632 | const u64 *generation, dev_t dev, struct buffer_head **bhp) |
b3b94faa | 633 | { |
feaa7bba | 634 | struct gfs2_sbd *sdp = GFS2_SB(&dip->i_inode); |
b96ca4fa | 635 | struct gfs2_dinode *di; |
b3b94faa | 636 | struct buffer_head *dibh; |
4bd91ba1 | 637 | struct timespec tv = CURRENT_TIME; |
b3b94faa DT |
638 | |
639 | dibh = gfs2_meta_new(gl, inum->no_addr); | |
d4e9c4c3 | 640 | gfs2_trans_add_bh(gl, dibh, 1); |
b3b94faa DT |
641 | gfs2_metatype_set(dibh, GFS2_METATYPE_DI, GFS2_FORMAT_DI); |
642 | gfs2_buffer_clear_tail(dibh, sizeof(struct gfs2_dinode)); | |
b96ca4fa SW |
643 | di = (struct gfs2_dinode *)dibh->b_data; |
644 | ||
2442a098 SW |
645 | di->di_num.no_formal_ino = cpu_to_be64(inum->no_formal_ino); |
646 | di->di_num.no_addr = cpu_to_be64(inum->no_addr); | |
b96ca4fa SW |
647 | di->di_mode = cpu_to_be32(mode); |
648 | di->di_uid = cpu_to_be32(uid); | |
649 | di->di_gid = cpu_to_be32(gid); | |
294caaa3 SW |
650 | di->di_nlink = 0; |
651 | di->di_size = 0; | |
b96ca4fa | 652 | di->di_blocks = cpu_to_be64(1); |
4bd91ba1 | 653 | di->di_atime = di->di_mtime = di->di_ctime = cpu_to_be64(tv.tv_sec); |
e7f14f4d SW |
654 | di->di_major = cpu_to_be32(MAJOR(dev)); |
655 | di->di_minor = cpu_to_be32(MINOR(dev)); | |
b96ca4fa | 656 | di->di_goal_meta = di->di_goal_data = cpu_to_be64(inum->no_addr); |
4340fe62 | 657 | di->di_generation = cpu_to_be64(*generation); |
294caaa3 | 658 | di->di_flags = 0; |
b3b94faa DT |
659 | |
660 | if (S_ISREG(mode)) { | |
383f01fb | 661 | if ((dip->i_diskflags & GFS2_DIF_INHERIT_JDATA) || |
b3b94faa | 662 | gfs2_tune_get(sdp, gt_new_files_jdata)) |
b96ca4fa | 663 | di->di_flags |= cpu_to_be32(GFS2_DIF_JDATA); |
b3b94faa | 664 | } else if (S_ISDIR(mode)) { |
383f01fb | 665 | di->di_flags |= cpu_to_be32(dip->i_diskflags & |
568f4c96 | 666 | GFS2_DIF_INHERIT_JDATA); |
b3b94faa DT |
667 | } |
668 | ||
b96ca4fa | 669 | di->__pad1 = 0; |
a9583c79 | 670 | di->di_payload_format = cpu_to_be32(S_ISDIR(mode) ? GFS2_FORMAT_DE : 0); |
294caaa3 | 671 | di->di_height = 0; |
b96ca4fa SW |
672 | di->__pad2 = 0; |
673 | di->__pad3 = 0; | |
294caaa3 SW |
674 | di->di_depth = 0; |
675 | di->di_entries = 0; | |
b96ca4fa | 676 | memset(&di->__pad4, 0, sizeof(di->__pad4)); |
294caaa3 | 677 | di->di_eattr = 0; |
4bd91ba1 SW |
678 | di->di_atime_nsec = cpu_to_be32(tv.tv_nsec); |
679 | di->di_mtime_nsec = cpu_to_be32(tv.tv_nsec); | |
680 | di->di_ctime_nsec = cpu_to_be32(tv.tv_nsec); | |
b96ca4fa | 681 | memset(&di->di_reserved, 0, sizeof(di->di_reserved)); |
e9bd2b3b WC |
682 | |
683 | set_buffer_uptodate(dibh); | |
b96ca4fa | 684 | |
e9bd2b3b | 685 | *bhp = dibh; |
b3b94faa DT |
686 | } |
687 | ||
688 | static int make_dinode(struct gfs2_inode *dip, struct gfs2_glock *gl, | |
629a21e7 | 689 | unsigned int mode, const struct gfs2_inum_host *inum, |
e9bd2b3b | 690 | const u64 *generation, dev_t dev, struct buffer_head **bhp) |
b3b94faa | 691 | { |
feaa7bba | 692 | struct gfs2_sbd *sdp = GFS2_SB(&dip->i_inode); |
b3b94faa DT |
693 | unsigned int uid, gid; |
694 | int error; | |
695 | ||
696 | munge_mode_uid_gid(dip, &mode, &uid, &gid); | |
182fe5ab CG |
697 | if (!gfs2_alloc_get(dip)) |
698 | return -ENOMEM; | |
b3b94faa DT |
699 | |
700 | error = gfs2_quota_lock(dip, uid, gid); | |
701 | if (error) | |
702 | goto out; | |
703 | ||
704 | error = gfs2_quota_check(dip, uid, gid); | |
705 | if (error) | |
706 | goto out_quota; | |
707 | ||
feaa7bba | 708 | error = gfs2_trans_begin(sdp, RES_DINODE + RES_QUOTA, 0); |
b3b94faa DT |
709 | if (error) |
710 | goto out_quota; | |
711 | ||
e9bd2b3b | 712 | init_dinode(dip, gl, inum, mode, uid, gid, generation, dev, bhp); |
b3b94faa | 713 | gfs2_quota_change(dip, +1, uid, gid); |
b3b94faa DT |
714 | gfs2_trans_end(sdp); |
715 | ||
feaa7bba | 716 | out_quota: |
b3b94faa | 717 | gfs2_quota_unlock(dip); |
feaa7bba | 718 | out: |
b3b94faa | 719 | gfs2_alloc_put(dip); |
b3b94faa DT |
720 | return error; |
721 | } | |
722 | ||
feaa7bba SW |
723 | static int link_dinode(struct gfs2_inode *dip, const struct qstr *name, |
724 | struct gfs2_inode *ip) | |
b3b94faa | 725 | { |
feaa7bba | 726 | struct gfs2_sbd *sdp = GFS2_SB(&dip->i_inode); |
b3b94faa DT |
727 | struct gfs2_alloc *al; |
728 | int alloc_required; | |
729 | struct buffer_head *dibh; | |
730 | int error; | |
731 | ||
732 | al = gfs2_alloc_get(dip); | |
182fe5ab CG |
733 | if (!al) |
734 | return -ENOMEM; | |
b3b94faa DT |
735 | |
736 | error = gfs2_quota_lock(dip, NO_QUOTA_CHANGE, NO_QUOTA_CHANGE); | |
737 | if (error) | |
738 | goto fail; | |
739 | ||
feaa7bba | 740 | error = alloc_required = gfs2_diradd_alloc_required(&dip->i_inode, name); |
c752666c | 741 | if (alloc_required < 0) |
1b8177ec | 742 | goto fail_quota_locks; |
b3b94faa | 743 | if (alloc_required) { |
2933f925 | 744 | error = gfs2_quota_check(dip, dip->i_inode.i_uid, dip->i_inode.i_gid); |
b3b94faa DT |
745 | if (error) |
746 | goto fail_quota_locks; | |
747 | ||
748 | al->al_requested = sdp->sd_max_dirres; | |
749 | ||
750 | error = gfs2_inplace_reserve(dip); | |
751 | if (error) | |
752 | goto fail_quota_locks; | |
753 | ||
320dd101 | 754 | error = gfs2_trans_begin(sdp, sdp->sd_max_dirres + |
bb8d8a6f | 755 | al->al_rgd->rd_length + |
907b9bce | 756 | 2 * RES_DINODE + |
b3b94faa DT |
757 | RES_STATFS + RES_QUOTA, 0); |
758 | if (error) | |
759 | goto fail_ipreserv; | |
760 | } else { | |
feaa7bba | 761 | error = gfs2_trans_begin(sdp, RES_LEAF + 2 * RES_DINODE, 0); |
b3b94faa DT |
762 | if (error) |
763 | goto fail_quota_locks; | |
764 | } | |
765 | ||
dbb7cae2 | 766 | error = gfs2_dir_add(&dip->i_inode, name, ip, IF2DT(ip->i_inode.i_mode)); |
b3b94faa DT |
767 | if (error) |
768 | goto fail_end_trans; | |
769 | ||
770 | error = gfs2_meta_inode_buffer(ip, &dibh); | |
771 | if (error) | |
772 | goto fail_end_trans; | |
4f56110a | 773 | ip->i_inode.i_nlink = 1; |
d4e9c4c3 | 774 | gfs2_trans_add_bh(ip->i_gl, dibh, 1); |
539e5d6b | 775 | gfs2_dinode_out(ip, dibh->b_data); |
b3b94faa | 776 | brelse(dibh); |
b3b94faa DT |
777 | return 0; |
778 | ||
320dd101 | 779 | fail_end_trans: |
b3b94faa DT |
780 | gfs2_trans_end(sdp); |
781 | ||
320dd101 | 782 | fail_ipreserv: |
6dbd8224 | 783 | if (dip->i_alloc->al_rgd) |
b3b94faa DT |
784 | gfs2_inplace_release(dip); |
785 | ||
320dd101 | 786 | fail_quota_locks: |
b3b94faa DT |
787 | gfs2_quota_unlock(dip); |
788 | ||
320dd101 | 789 | fail: |
b3b94faa | 790 | gfs2_alloc_put(dip); |
b3b94faa DT |
791 | return error; |
792 | } | |
793 | ||
2a7dba39 EP |
794 | static int gfs2_security_init(struct gfs2_inode *dip, struct gfs2_inode *ip, |
795 | const struct qstr *qstr) | |
fcb47e0b RH |
796 | { |
797 | int err; | |
798 | size_t len; | |
799 | void *value; | |
800 | char *name; | |
fcb47e0b | 801 | |
2a7dba39 | 802 | err = security_inode_init_security(&ip->i_inode, &dip->i_inode, qstr, |
fcb47e0b RH |
803 | &name, &value, &len); |
804 | ||
805 | if (err) { | |
806 | if (err == -EOPNOTSUPP) | |
807 | return 0; | |
808 | return err; | |
809 | } | |
810 | ||
431547b3 CH |
811 | err = __gfs2_xattr_set(&ip->i_inode, name, value, len, 0, |
812 | GFS2_EATYPE_SECURITY); | |
fcb47e0b RH |
813 | kfree(value); |
814 | kfree(name); | |
815 | ||
816 | return err; | |
817 | } | |
818 | ||
b3b94faa DT |
819 | /** |
820 | * gfs2_createi - Create a new inode | |
821 | * @ghs: An array of two holders | |
822 | * @name: The name of the new file | |
823 | * @mode: the permissions on the new inode | |
824 | * | |
825 | * @ghs[0] is an initialized holder for the directory | |
826 | * @ghs[1] is the holder for the inode lock | |
827 | * | |
7359a19c | 828 | * If the return value is not NULL, the glocks on both the directory and the new |
b3b94faa DT |
829 | * file are held. A transaction has been started and an inplace reservation |
830 | * is held, as well. | |
831 | * | |
7359a19c | 832 | * Returns: An inode |
b3b94faa DT |
833 | */ |
834 | ||
feaa7bba | 835 | struct inode *gfs2_createi(struct gfs2_holder *ghs, const struct qstr *name, |
e7f14f4d | 836 | unsigned int mode, dev_t dev) |
b3b94faa | 837 | { |
e1cc8603 | 838 | struct inode *inode = NULL; |
5c676f6d | 839 | struct gfs2_inode *dip = ghs->gh_gl->gl_object; |
feaa7bba SW |
840 | struct inode *dir = &dip->i_inode; |
841 | struct gfs2_sbd *sdp = GFS2_SB(&dip->i_inode); | |
dbb7cae2 | 842 | struct gfs2_inum_host inum = { .no_addr = 0, .no_formal_ino = 0 }; |
b3b94faa | 843 | int error; |
4340fe62 | 844 | u64 generation; |
f91a0d3e | 845 | struct buffer_head *bh = NULL; |
b3b94faa DT |
846 | |
847 | if (!name->len || name->len > GFS2_FNAMESIZE) | |
7359a19c | 848 | return ERR_PTR(-ENAMETOOLONG); |
b3b94faa | 849 | |
b3b94faa DT |
850 | gfs2_holder_reinit(LM_ST_EXCLUSIVE, 0, ghs); |
851 | error = gfs2_glock_nq(ghs); | |
852 | if (error) | |
853 | goto fail; | |
854 | ||
855 | error = create_ok(dip, name, mode); | |
856 | if (error) | |
857 | goto fail_gunlock; | |
858 | ||
dbb7cae2 | 859 | error = alloc_dinode(dip, &inum.no_addr, &generation); |
b3b94faa DT |
860 | if (error) |
861 | goto fail_gunlock; | |
8d8291ae | 862 | inum.no_formal_ino = generation; |
b3b94faa | 863 | |
28626e20 SW |
864 | error = gfs2_glock_nq_num(sdp, inum.no_addr, &gfs2_inode_glops, |
865 | LM_ST_EXCLUSIVE, GL_SKIP, ghs + 1); | |
866 | if (error) | |
867 | goto fail_gunlock; | |
b3b94faa | 868 | |
e9bd2b3b | 869 | error = make_dinode(dip, ghs[1].gh_gl, mode, &inum, &generation, dev, &bh); |
b3b94faa DT |
870 | if (error) |
871 | goto fail_gunlock2; | |
872 | ||
8d8291ae | 873 | inode = gfs2_inode_lookup(dir->i_sb, IF2DT(mode), inum.no_addr, |
1a0eae88 | 874 | inum.no_formal_ino); |
feaa7bba | 875 | if (IS_ERR(inode)) |
b3b94faa DT |
876 | goto fail_gunlock2; |
877 | ||
feaa7bba | 878 | error = gfs2_inode_refresh(GFS2_I(inode)); |
b3b94faa | 879 | if (error) |
e1cc8603 | 880 | goto fail_gunlock2; |
b3b94faa | 881 | |
479c427d | 882 | error = gfs2_acl_create(dip, inode); |
b3b94faa | 883 | if (error) |
e1cc8603 | 884 | goto fail_gunlock2; |
b3b94faa | 885 | |
2a7dba39 | 886 | error = gfs2_security_init(dip, GFS2_I(inode), name); |
fcb47e0b | 887 | if (error) |
e1cc8603 | 888 | goto fail_gunlock2; |
fcb47e0b | 889 | |
feaa7bba | 890 | error = link_dinode(dip, name, GFS2_I(inode)); |
b3b94faa | 891 | if (error) |
e1cc8603 | 892 | goto fail_gunlock2; |
b3b94faa | 893 | |
f91a0d3e SW |
894 | if (bh) |
895 | brelse(bh); | |
7359a19c | 896 | return inode; |
b3b94faa | 897 | |
320dd101 | 898 | fail_gunlock2: |
b3b94faa | 899 | gfs2_glock_dq_uninit(ghs + 1); |
bd1eb881 | 900 | if (inode && !IS_ERR(inode)) |
e1cc8603 | 901 | iput(inode); |
320dd101 | 902 | fail_gunlock: |
b3b94faa | 903 | gfs2_glock_dq(ghs); |
320dd101 | 904 | fail: |
f91a0d3e SW |
905 | if (bh) |
906 | brelse(bh); | |
7359a19c | 907 | return ERR_PTR(error); |
b3b94faa DT |
908 | } |
909 | ||
536baf02 | 910 | static int __gfs2_setattr_simple(struct gfs2_inode *ip, struct iattr *attr) |
b3b94faa | 911 | { |
1025774c | 912 | struct inode *inode = &ip->i_inode; |
b3b94faa DT |
913 | struct buffer_head *dibh; |
914 | int error; | |
915 | ||
916 | error = gfs2_meta_inode_buffer(ip, &dibh); | |
1025774c CH |
917 | if (error) |
918 | return error; | |
919 | ||
1025774c CH |
920 | setattr_copy(inode, attr); |
921 | mark_inode_dirty(inode); | |
1025774c CH |
922 | gfs2_trans_add_bh(ip->i_gl, dibh, 1); |
923 | gfs2_dinode_out(ip, dibh->b_data); | |
924 | brelse(dibh); | |
925 | return 0; | |
b3b94faa DT |
926 | } |
927 | ||
928 | /** | |
929 | * gfs2_setattr_simple - | |
930 | * @ip: | |
931 | * @attr: | |
932 | * | |
933 | * Called with a reference on the vnode. | |
934 | * | |
935 | * Returns: errno | |
936 | */ | |
937 | ||
938 | int gfs2_setattr_simple(struct gfs2_inode *ip, struct iattr *attr) | |
939 | { | |
940 | int error; | |
941 | ||
5c676f6d | 942 | if (current->journal_info) |
b3b94faa DT |
943 | return __gfs2_setattr_simple(ip, attr); |
944 | ||
feaa7bba | 945 | error = gfs2_trans_begin(GFS2_SB(&ip->i_inode), RES_DINODE, 0); |
b3b94faa DT |
946 | if (error) |
947 | return error; | |
948 | ||
949 | error = __gfs2_setattr_simple(ip, attr); | |
feaa7bba | 950 | gfs2_trans_end(GFS2_SB(&ip->i_inode)); |
b3b94faa DT |
951 | return error; |
952 | } | |
953 | ||
bb8d8a6f SW |
954 | void gfs2_dinode_out(const struct gfs2_inode *ip, void *buf) |
955 | { | |
bb8d8a6f SW |
956 | struct gfs2_dinode *str = buf; |
957 | ||
958 | str->di_header.mh_magic = cpu_to_be32(GFS2_MAGIC); | |
959 | str->di_header.mh_type = cpu_to_be32(GFS2_METATYPE_DI); | |
bb8d8a6f | 960 | str->di_header.mh_format = cpu_to_be32(GFS2_FORMAT_DI); |
bb8d8a6f SW |
961 | str->di_num.no_addr = cpu_to_be64(ip->i_no_addr); |
962 | str->di_num.no_formal_ino = cpu_to_be64(ip->i_no_formal_ino); | |
963 | str->di_mode = cpu_to_be32(ip->i_inode.i_mode); | |
964 | str->di_uid = cpu_to_be32(ip->i_inode.i_uid); | |
965 | str->di_gid = cpu_to_be32(ip->i_inode.i_gid); | |
966 | str->di_nlink = cpu_to_be32(ip->i_inode.i_nlink); | |
a2e0f799 | 967 | str->di_size = cpu_to_be64(i_size_read(&ip->i_inode)); |
77658aad | 968 | str->di_blocks = cpu_to_be64(gfs2_get_inode_blocks(&ip->i_inode)); |
bb8d8a6f SW |
969 | str->di_atime = cpu_to_be64(ip->i_inode.i_atime.tv_sec); |
970 | str->di_mtime = cpu_to_be64(ip->i_inode.i_mtime.tv_sec); | |
971 | str->di_ctime = cpu_to_be64(ip->i_inode.i_ctime.tv_sec); | |
972 | ||
ce276b06 SW |
973 | str->di_goal_meta = cpu_to_be64(ip->i_goal); |
974 | str->di_goal_data = cpu_to_be64(ip->i_goal); | |
bcf0b5b3 | 975 | str->di_generation = cpu_to_be64(ip->i_generation); |
bb8d8a6f | 976 | |
383f01fb | 977 | str->di_flags = cpu_to_be32(ip->i_diskflags); |
ecc30c79 | 978 | str->di_height = cpu_to_be16(ip->i_height); |
bb8d8a6f | 979 | str->di_payload_format = cpu_to_be32(S_ISDIR(ip->i_inode.i_mode) && |
383f01fb | 980 | !(ip->i_diskflags & GFS2_DIF_EXHASH) ? |
bb8d8a6f | 981 | GFS2_FORMAT_DE : 0); |
9a004508 | 982 | str->di_depth = cpu_to_be16(ip->i_depth); |
ad6203f2 | 983 | str->di_entries = cpu_to_be32(ip->i_entries); |
bb8d8a6f | 984 | |
3767ac21 | 985 | str->di_eattr = cpu_to_be64(ip->i_eattr); |
4bd91ba1 SW |
986 | str->di_atime_nsec = cpu_to_be32(ip->i_inode.i_atime.tv_nsec); |
987 | str->di_mtime_nsec = cpu_to_be32(ip->i_inode.i_mtime.tv_nsec); | |
988 | str->di_ctime_nsec = cpu_to_be32(ip->i_inode.i_ctime.tv_nsec); | |
bb8d8a6f SW |
989 | } |
990 | ||
991 | void gfs2_dinode_print(const struct gfs2_inode *ip) | |
992 | { | |
bb8d8a6f SW |
993 | printk(KERN_INFO " no_formal_ino = %llu\n", |
994 | (unsigned long long)ip->i_no_formal_ino); | |
995 | printk(KERN_INFO " no_addr = %llu\n", | |
996 | (unsigned long long)ip->i_no_addr); | |
a2e0f799 SW |
997 | printk(KERN_INFO " i_size = %llu\n", |
998 | (unsigned long long)i_size_read(&ip->i_inode)); | |
77658aad SW |
999 | printk(KERN_INFO " blocks = %llu\n", |
1000 | (unsigned long long)gfs2_get_inode_blocks(&ip->i_inode)); | |
ce276b06 SW |
1001 | printk(KERN_INFO " i_goal = %llu\n", |
1002 | (unsigned long long)ip->i_goal); | |
383f01fb | 1003 | printk(KERN_INFO " i_diskflags = 0x%.8X\n", ip->i_diskflags); |
ca390601 | 1004 | printk(KERN_INFO " i_height = %u\n", ip->i_height); |
9a004508 | 1005 | printk(KERN_INFO " i_depth = %u\n", ip->i_depth); |
ad6203f2 | 1006 | printk(KERN_INFO " i_entries = %u\n", ip->i_entries); |
3767ac21 SW |
1007 | printk(KERN_INFO " i_eattr = %llu\n", |
1008 | (unsigned long long)ip->i_eattr); | |
bb8d8a6f SW |
1009 | } |
1010 |