Commit | Line | Data |
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0b61f8a4 | 1 | // SPDX-License-Identifier: GPL-2.0 |
19de7351 DC |
2 | /* |
3 | * Copyright (c) 2000-2006 Silicon Graphics, Inc. | |
4 | * Copyright (c) 2012-2013 Red Hat, Inc. | |
5 | * All rights reserved. | |
19de7351 DC |
6 | */ |
7 | #include "xfs.h" | |
239880ef | 8 | #include "xfs_shared.h" |
19de7351 | 9 | #include "xfs_fs.h" |
6ca1c906 | 10 | #include "xfs_format.h" |
239880ef DC |
11 | #include "xfs_log_format.h" |
12 | #include "xfs_trans_resv.h" | |
19de7351 | 13 | #include "xfs_bit.h" |
19de7351 | 14 | #include "xfs_mount.h" |
2b9ab5ab | 15 | #include "xfs_dir2.h" |
19de7351 | 16 | #include "xfs_inode.h" |
19de7351 | 17 | #include "xfs_bmap.h" |
a4fbe6ab | 18 | #include "xfs_bmap_btree.h" |
19de7351 | 19 | #include "xfs_quota.h" |
19de7351 | 20 | #include "xfs_trans_space.h" |
19de7351 | 21 | #include "xfs_trace.h" |
239880ef | 22 | #include "xfs_trans.h" |
19de7351 DC |
23 | |
24 | /* ----- Kernel only functions below ----- */ | |
5da8f2f8 DW |
25 | int |
26 | xfs_readlink_bmap_ilocked( | |
f948dd76 DC |
27 | struct xfs_inode *ip, |
28 | char *link) | |
19de7351 | 29 | { |
f948dd76 DC |
30 | struct xfs_mount *mp = ip->i_mount; |
31 | struct xfs_bmbt_irec mval[XFS_SYMLINK_MAPS]; | |
32 | struct xfs_buf *bp; | |
33 | xfs_daddr_t d; | |
34 | char *cur_chunk; | |
35 | int pathlen = ip->i_d.di_size; | |
36 | int nmaps = XFS_SYMLINK_MAPS; | |
37 | int byte_cnt; | |
38 | int n; | |
39 | int error = 0; | |
40 | int fsblocks = 0; | |
41 | int offset; | |
19de7351 | 42 | |
29db2500 CH |
43 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_SHARED | XFS_ILOCK_EXCL)); |
44 | ||
f948dd76 DC |
45 | fsblocks = xfs_symlink_blocks(mp, pathlen); |
46 | error = xfs_bmapi_read(ip, 0, fsblocks, mval, &nmaps, 0); | |
19de7351 DC |
47 | if (error) |
48 | goto out; | |
49 | ||
f948dd76 | 50 | offset = 0; |
19de7351 DC |
51 | for (n = 0; n < nmaps; n++) { |
52 | d = XFS_FSB_TO_DADDR(mp, mval[n].br_startblock); | |
53 | byte_cnt = XFS_FSB_TO_B(mp, mval[n].br_blockcount); | |
54 | ||
f948dd76 DC |
55 | bp = xfs_buf_read(mp->m_ddev_targp, d, BTOBB(byte_cnt), 0, |
56 | &xfs_symlink_buf_ops); | |
19de7351 | 57 | if (!bp) |
2451337d | 58 | return -ENOMEM; |
19de7351 DC |
59 | error = bp->b_error; |
60 | if (error) { | |
61 | xfs_buf_ioerror_alert(bp, __func__); | |
62 | xfs_buf_relse(bp); | |
ac75a1f7 DC |
63 | |
64 | /* bad CRC means corrupted metadata */ | |
2451337d DC |
65 | if (error == -EFSBADCRC) |
66 | error = -EFSCORRUPTED; | |
19de7351 DC |
67 | goto out; |
68 | } | |
f948dd76 | 69 | byte_cnt = XFS_SYMLINK_BUF_SPACE(mp, byte_cnt); |
19de7351 DC |
70 | if (pathlen < byte_cnt) |
71 | byte_cnt = pathlen; | |
f948dd76 DC |
72 | |
73 | cur_chunk = bp->b_addr; | |
74 | if (xfs_sb_version_hascrc(&mp->m_sb)) { | |
bda65ef8 | 75 | if (!xfs_symlink_hdr_ok(ip->i_ino, offset, |
f948dd76 | 76 | byte_cnt, bp)) { |
2451337d | 77 | error = -EFSCORRUPTED; |
f948dd76 DC |
78 | xfs_alert(mp, |
79 | "symlink header does not match required off/len/owner (0x%x/Ox%x,0x%llx)", | |
80 | offset, byte_cnt, ip->i_ino); | |
81 | xfs_buf_relse(bp); | |
82 | goto out; | |
83 | ||
84 | } | |
85 | ||
86 | cur_chunk += sizeof(struct xfs_dsymlink_hdr); | |
87 | } | |
88 | ||
2ac56d3d | 89 | memcpy(link + offset, cur_chunk, byte_cnt); |
f948dd76 | 90 | |
19de7351 | 91 | pathlen -= byte_cnt; |
f948dd76 | 92 | offset += byte_cnt; |
19de7351 | 93 | |
19de7351 DC |
94 | xfs_buf_relse(bp); |
95 | } | |
f948dd76 | 96 | ASSERT(pathlen == 0); |
19de7351 DC |
97 | |
98 | link[ip->i_d.di_size] = '\0'; | |
99 | error = 0; | |
100 | ||
101 | out: | |
102 | return error; | |
103 | } | |
104 | ||
105 | int | |
106 | xfs_readlink( | |
f948dd76 | 107 | struct xfs_inode *ip, |
19de7351 DC |
108 | char *link) |
109 | { | |
f948dd76 | 110 | struct xfs_mount *mp = ip->i_mount; |
19de7351 DC |
111 | xfs_fsize_t pathlen; |
112 | int error = 0; | |
113 | ||
114 | trace_xfs_readlink(ip); | |
115 | ||
30ee052e CH |
116 | ASSERT(!(ip->i_df.if_flags & XFS_IFINLINE)); |
117 | ||
19de7351 | 118 | if (XFS_FORCED_SHUTDOWN(mp)) |
2451337d | 119 | return -EIO; |
19de7351 DC |
120 | |
121 | xfs_ilock(ip, XFS_ILOCK_SHARED); | |
122 | ||
123 | pathlen = ip->i_d.di_size; | |
124 | if (!pathlen) | |
125 | goto out; | |
126 | ||
6eb0b8df | 127 | if (pathlen < 0 || pathlen > XFS_SYMLINK_MAXLEN) { |
19de7351 DC |
128 | xfs_alert(mp, "%s: inode (%llu) bad symlink length (%lld)", |
129 | __func__, (unsigned long long) ip->i_ino, | |
130 | (long long) pathlen); | |
131 | ASSERT(0); | |
2451337d | 132 | error = -EFSCORRUPTED; |
19de7351 DC |
133 | goto out; |
134 | } | |
135 | ||
136 | ||
5da8f2f8 | 137 | error = xfs_readlink_bmap_ilocked(ip, link); |
19de7351 DC |
138 | |
139 | out: | |
140 | xfs_iunlock(ip, XFS_ILOCK_SHARED); | |
141 | return error; | |
142 | } | |
143 | ||
144 | int | |
145 | xfs_symlink( | |
f948dd76 | 146 | struct xfs_inode *dp, |
19de7351 DC |
147 | struct xfs_name *link_name, |
148 | const char *target_path, | |
149 | umode_t mode, | |
f948dd76 | 150 | struct xfs_inode **ipp) |
19de7351 | 151 | { |
f948dd76 DC |
152 | struct xfs_mount *mp = dp->i_mount; |
153 | struct xfs_trans *tp = NULL; | |
154 | struct xfs_inode *ip = NULL; | |
155 | int error = 0; | |
19de7351 | 156 | int pathlen; |
58c90473 | 157 | bool unlock_dp_on_error = false; |
19de7351 DC |
158 | xfs_fileoff_t first_fsb; |
159 | xfs_filblks_t fs_blocks; | |
160 | int nmaps; | |
f948dd76 | 161 | struct xfs_bmbt_irec mval[XFS_SYMLINK_MAPS]; |
19de7351 DC |
162 | xfs_daddr_t d; |
163 | const char *cur_chunk; | |
164 | int byte_cnt; | |
165 | int n; | |
166 | xfs_buf_t *bp; | |
167 | prid_t prid; | |
113a5683 CS |
168 | struct xfs_dquot *udqp = NULL; |
169 | struct xfs_dquot *gdqp = NULL; | |
92f8ff73 | 170 | struct xfs_dquot *pdqp = NULL; |
19de7351 DC |
171 | uint resblks; |
172 | ||
173 | *ipp = NULL; | |
19de7351 DC |
174 | |
175 | trace_xfs_symlink(dp, link_name); | |
176 | ||
177 | if (XFS_FORCED_SHUTDOWN(mp)) | |
2451337d | 178 | return -EIO; |
19de7351 DC |
179 | |
180 | /* | |
181 | * Check component lengths of the target path name. | |
182 | */ | |
183 | pathlen = strlen(target_path); | |
6eb0b8df | 184 | if (pathlen >= XFS_SYMLINK_MAXLEN) /* total string too long */ |
2451337d | 185 | return -ENAMETOOLONG; |
43feeea8 | 186 | ASSERT(pathlen > 0); |
19de7351 DC |
187 | |
188 | udqp = gdqp = NULL; | |
163467d3 | 189 | prid = xfs_get_initial_prid(dp); |
19de7351 DC |
190 | |
191 | /* | |
192 | * Make sure that we have allocated dquot(s) on disk. | |
193 | */ | |
7aab1b28 DE |
194 | error = xfs_qm_vop_dqalloc(dp, |
195 | xfs_kuid_to_uid(current_fsuid()), | |
196 | xfs_kgid_to_gid(current_fsgid()), prid, | |
197 | XFS_QMOPT_QUOTALL | XFS_QMOPT_INHERIT, | |
198 | &udqp, &gdqp, &pdqp); | |
19de7351 | 199 | if (error) |
58c90473 | 200 | return error; |
19de7351 | 201 | |
19de7351 DC |
202 | /* |
203 | * The symlink will fit into the inode data fork? | |
204 | * There can't be any attributes so we get the whole variable part. | |
205 | */ | |
206 | if (pathlen <= XFS_LITINO(mp, dp->i_d.di_version)) | |
207 | fs_blocks = 0; | |
208 | else | |
321a9583 | 209 | fs_blocks = xfs_symlink_blocks(mp, pathlen); |
19de7351 | 210 | resblks = XFS_SYMLINK_SPACE_RES(mp, link_name->len, fs_blocks); |
253f4911 CH |
211 | |
212 | error = xfs_trans_alloc(mp, &M_RES(mp)->tr_symlink, resblks, 0, 0, &tp); | |
4906e215 | 213 | if (error) |
253f4911 | 214 | goto out_release_inode; |
19de7351 | 215 | |
65523218 | 216 | xfs_ilock(dp, XFS_ILOCK_EXCL | XFS_ILOCK_PARENT); |
19de7351 DC |
217 | unlock_dp_on_error = true; |
218 | ||
219 | /* | |
220 | * Check whether the directory allows new symlinks or not. | |
221 | */ | |
222 | if (dp->i_d.di_flags & XFS_DIFLAG_NOSYMLINKS) { | |
2451337d | 223 | error = -EPERM; |
58c90473 | 224 | goto out_trans_cancel; |
19de7351 DC |
225 | } |
226 | ||
227 | /* | |
228 | * Reserve disk quota : blocks and inode. | |
229 | */ | |
92f8ff73 CS |
230 | error = xfs_trans_reserve_quota(tp, mp, udqp, gdqp, |
231 | pdqp, resblks, 1, 0); | |
19de7351 | 232 | if (error) |
58c90473 | 233 | goto out_trans_cancel; |
19de7351 | 234 | |
19de7351 DC |
235 | /* |
236 | * Allocate an inode for the symlink. | |
237 | */ | |
238 | error = xfs_dir_ialloc(&tp, dp, S_IFLNK | (mode & ~S_IFMT), 1, 0, | |
c959025e | 239 | prid, &ip); |
58c90473 DC |
240 | if (error) |
241 | goto out_trans_cancel; | |
19de7351 DC |
242 | |
243 | /* | |
58c90473 DC |
244 | * Now we join the directory inode to the transaction. We do not do it |
245 | * earlier because xfs_dir_ialloc might commit the previous transaction | |
246 | * (and release all the locks). An error from here on will result in | |
247 | * the transaction cancel unlocking dp so don't do it explicitly in the | |
19de7351 DC |
248 | * error path. |
249 | */ | |
65523218 | 250 | xfs_trans_ijoin(tp, dp, XFS_ILOCK_EXCL); |
19de7351 DC |
251 | unlock_dp_on_error = false; |
252 | ||
253 | /* | |
254 | * Also attach the dquot(s) to it, if applicable. | |
255 | */ | |
92f8ff73 | 256 | xfs_qm_vop_create_dqattach(tp, ip, udqp, gdqp, pdqp); |
19de7351 DC |
257 | |
258 | if (resblks) | |
259 | resblks -= XFS_IALLOC_SPACE_RES(mp); | |
260 | /* | |
261 | * If the symlink will fit into the inode, write it inline. | |
262 | */ | |
263 | if (pathlen <= XFS_IFORK_DSIZE(ip)) { | |
143f4aed | 264 | xfs_init_local_fork(ip, XFS_DATA_FORK, target_path, pathlen); |
19de7351 | 265 | |
143f4aed | 266 | ip->i_d.di_size = pathlen; |
19de7351 DC |
267 | ip->i_d.di_format = XFS_DINODE_FMT_LOCAL; |
268 | xfs_trans_log_inode(tp, ip, XFS_ILOG_DDATA | XFS_ILOG_CORE); | |
19de7351 | 269 | } else { |
f948dd76 DC |
270 | int offset; |
271 | ||
19de7351 DC |
272 | first_fsb = 0; |
273 | nmaps = XFS_SYMLINK_MAPS; | |
274 | ||
275 | error = xfs_bmapi_write(tp, ip, first_fsb, fs_blocks, | |
a7beabea | 276 | XFS_BMAPI_METADATA, resblks, mval, &nmaps); |
19de7351 | 277 | if (error) |
c8eac49e | 278 | goto out_trans_cancel; |
19de7351 DC |
279 | |
280 | if (resblks) | |
281 | resblks -= fs_blocks; | |
282 | ip->i_d.di_size = pathlen; | |
283 | xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE); | |
284 | ||
285 | cur_chunk = target_path; | |
f948dd76 | 286 | offset = 0; |
19de7351 | 287 | for (n = 0; n < nmaps; n++) { |
321a9583 | 288 | char *buf; |
f948dd76 | 289 | |
19de7351 DC |
290 | d = XFS_FSB_TO_DADDR(mp, mval[n].br_startblock); |
291 | byte_cnt = XFS_FSB_TO_B(mp, mval[n].br_blockcount); | |
292 | bp = xfs_trans_get_buf(tp, mp->m_ddev_targp, d, | |
293 | BTOBB(byte_cnt), 0); | |
294 | if (!bp) { | |
2451337d | 295 | error = -ENOMEM; |
c8eac49e | 296 | goto out_trans_cancel; |
19de7351 | 297 | } |
f948dd76 DC |
298 | bp->b_ops = &xfs_symlink_buf_ops; |
299 | ||
300 | byte_cnt = XFS_SYMLINK_BUF_SPACE(mp, byte_cnt); | |
321a9583 | 301 | byte_cnt = min(byte_cnt, pathlen); |
19de7351 | 302 | |
f948dd76 DC |
303 | buf = bp->b_addr; |
304 | buf += xfs_symlink_hdr_set(mp, ip->i_ino, offset, | |
305 | byte_cnt, bp); | |
306 | ||
307 | memcpy(buf, cur_chunk, byte_cnt); | |
308 | ||
19de7351 | 309 | cur_chunk += byte_cnt; |
f948dd76 DC |
310 | pathlen -= byte_cnt; |
311 | offset += byte_cnt; | |
19de7351 | 312 | |
daf7b799 | 313 | xfs_trans_buf_set_type(tp, bp, XFS_BLFT_SYMLINK_BUF); |
f948dd76 DC |
314 | xfs_trans_log_buf(tp, bp, 0, (buf + byte_cnt - 1) - |
315 | (char *)bp->b_addr); | |
19de7351 | 316 | } |
321a9583 | 317 | ASSERT(pathlen == 0); |
19de7351 DC |
318 | } |
319 | ||
320 | /* | |
321 | * Create the directory entry for the symlink. | |
322 | */ | |
381eee69 | 323 | error = xfs_dir_createname(tp, dp, link_name, ip->i_ino, resblks); |
19de7351 | 324 | if (error) |
c8eac49e | 325 | goto out_trans_cancel; |
19de7351 DC |
326 | xfs_trans_ichgtime(tp, dp, XFS_ICHGTIME_MOD | XFS_ICHGTIME_CHG); |
327 | xfs_trans_log_inode(tp, dp, XFS_ILOG_CORE); | |
328 | ||
329 | /* | |
330 | * If this is a synchronous mount, make sure that the | |
331 | * symlink transaction goes to disk before returning to | |
332 | * the user. | |
333 | */ | |
334 | if (mp->m_flags & (XFS_MOUNT_WSYNC|XFS_MOUNT_DIRSYNC)) { | |
335 | xfs_trans_set_sync(tp); | |
336 | } | |
337 | ||
70393313 | 338 | error = xfs_trans_commit(tp); |
58c90473 DC |
339 | if (error) |
340 | goto out_release_inode; | |
341 | ||
19de7351 DC |
342 | xfs_qm_dqrele(udqp); |
343 | xfs_qm_dqrele(gdqp); | |
92f8ff73 | 344 | xfs_qm_dqrele(pdqp); |
19de7351 DC |
345 | |
346 | *ipp = ip; | |
347 | return 0; | |
348 | ||
58c90473 | 349 | out_trans_cancel: |
4906e215 | 350 | xfs_trans_cancel(tp); |
58c90473 DC |
351 | out_release_inode: |
352 | /* | |
353 | * Wait until after the current transaction is aborted to finish the | |
354 | * setup of the inode and release the inode. This prevents recursive | |
355 | * transactions and deadlocks from xfs_inactive. | |
356 | */ | |
357 | if (ip) { | |
358 | xfs_finish_inode_setup(ip); | |
44a8736b | 359 | xfs_irele(ip); |
58c90473 DC |
360 | } |
361 | ||
19de7351 DC |
362 | xfs_qm_dqrele(udqp); |
363 | xfs_qm_dqrele(gdqp); | |
92f8ff73 | 364 | xfs_qm_dqrele(pdqp); |
19de7351 DC |
365 | |
366 | if (unlock_dp_on_error) | |
65523218 | 367 | xfs_iunlock(dp, XFS_ILOCK_EXCL); |
19de7351 DC |
368 | return error; |
369 | } | |
370 | ||
371 | /* | |
372 | * Free a symlink that has blocks associated with it. | |
43feeea8 DC |
373 | * |
374 | * Note: zero length symlinks are not allowed to exist. When we set the size to | |
375 | * zero, also change it to a regular file so that it does not get written to | |
376 | * disk as a zero length symlink. The inode is on the unlinked list already, so | |
377 | * userspace cannot find this inode anymore, so this change is not user visible | |
378 | * but allows us to catch corrupt zero-length symlinks in the verifiers. | |
19de7351 | 379 | */ |
725eb1eb | 380 | STATIC int |
19de7351 | 381 | xfs_inactive_symlink_rmt( |
36b21dde | 382 | struct xfs_inode *ip) |
19de7351 DC |
383 | { |
384 | xfs_buf_t *bp; | |
19de7351 DC |
385 | int done; |
386 | int error; | |
19de7351 DC |
387 | int i; |
388 | xfs_mount_t *mp; | |
389 | xfs_bmbt_irec_t mval[XFS_SYMLINK_MAPS]; | |
390 | int nmaps; | |
19de7351 DC |
391 | int size; |
392 | xfs_trans_t *tp; | |
393 | ||
19de7351 | 394 | mp = ip->i_mount; |
725eb1eb | 395 | ASSERT(ip->i_df.if_flags & XFS_IFEXTENTS); |
19de7351 DC |
396 | /* |
397 | * We're freeing a symlink that has some | |
398 | * blocks allocated to it. Free the | |
399 | * blocks here. We know that we've got | |
400 | * either 1 or 2 extents and that we can | |
401 | * free them all in one bunmapi call. | |
402 | */ | |
403 | ASSERT(ip->i_d.di_nextents > 0 && ip->i_d.di_nextents <= 2); | |
404 | ||
253f4911 CH |
405 | error = xfs_trans_alloc(mp, &M_RES(mp)->tr_itruncate, 0, 0, 0, &tp); |
406 | if (error) | |
36b21dde | 407 | return error; |
36b21dde BF |
408 | |
409 | xfs_ilock(ip, XFS_ILOCK_EXCL); | |
410 | xfs_trans_ijoin(tp, ip, 0); | |
411 | ||
19de7351 | 412 | /* |
43feeea8 DC |
413 | * Lock the inode, fix the size, turn it into a regular file and join it |
414 | * to the transaction. Hold it so in the normal path, we still have it | |
415 | * locked for the second transaction. In the error paths we need it | |
19de7351 DC |
416 | * held so the cancel won't rele it, see below. |
417 | */ | |
418 | size = (int)ip->i_d.di_size; | |
419 | ip->i_d.di_size = 0; | |
43feeea8 | 420 | VFS_I(ip)->i_mode = (VFS_I(ip)->i_mode & ~S_IFMT) | S_IFREG; |
19de7351 DC |
421 | xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE); |
422 | /* | |
423 | * Find the block(s) so we can inval and unmap them. | |
424 | */ | |
425 | done = 0; | |
19de7351 | 426 | nmaps = ARRAY_SIZE(mval); |
f948dd76 | 427 | error = xfs_bmapi_read(ip, 0, xfs_symlink_blocks(mp, size), |
19de7351 DC |
428 | mval, &nmaps, 0); |
429 | if (error) | |
36b21dde | 430 | goto error_trans_cancel; |
19de7351 | 431 | /* |
f948dd76 | 432 | * Invalidate the block(s). No validation is done. |
19de7351 DC |
433 | */ |
434 | for (i = 0; i < nmaps; i++) { | |
435 | bp = xfs_trans_get_buf(tp, mp->m_ddev_targp, | |
436 | XFS_FSB_TO_DADDR(mp, mval[i].br_startblock), | |
437 | XFS_FSB_TO_BB(mp, mval[i].br_blockcount), 0); | |
438 | if (!bp) { | |
2451337d | 439 | error = -ENOMEM; |
c8eac49e | 440 | goto error_trans_cancel; |
19de7351 DC |
441 | } |
442 | xfs_trans_binval(tp, bp); | |
443 | } | |
444 | /* | |
2c3234d1 | 445 | * Unmap the dead block(s) to the dfops. |
19de7351 | 446 | */ |
2af52842 | 447 | error = xfs_bunmapi(tp, ip, 0, size, 0, nmaps, &done); |
36b21dde | 448 | if (error) |
c8eac49e | 449 | goto error_trans_cancel; |
19de7351 | 450 | ASSERT(done); |
3565b660 | 451 | |
19de7351 | 452 | /* |
c8eac49e BF |
453 | * Commit the transaction. This first logs the EFI and the inode, then |
454 | * rolls and commits the transaction that frees the extents. | |
19de7351 | 455 | */ |
3565b660 | 456 | xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE); |
70393313 | 457 | error = xfs_trans_commit(tp); |
19de7351 DC |
458 | if (error) { |
459 | ASSERT(XFS_FORCED_SHUTDOWN(mp)); | |
36b21dde | 460 | goto error_unlock; |
19de7351 | 461 | } |
19de7351 DC |
462 | |
463 | /* | |
464 | * Remove the memory for extent descriptions (just bookkeeping). | |
465 | */ | |
466 | if (ip->i_df.if_bytes) | |
467 | xfs_idata_realloc(ip, -ip->i_df.if_bytes, XFS_DATA_FORK); | |
468 | ASSERT(ip->i_df.if_bytes == 0); | |
19de7351 | 469 | |
36b21dde | 470 | xfs_iunlock(ip, XFS_ILOCK_EXCL); |
19de7351 DC |
471 | return 0; |
472 | ||
36b21dde | 473 | error_trans_cancel: |
4906e215 | 474 | xfs_trans_cancel(tp); |
36b21dde BF |
475 | error_unlock: |
476 | xfs_iunlock(ip, XFS_ILOCK_EXCL); | |
19de7351 DC |
477 | return error; |
478 | } | |
725eb1eb MT |
479 | |
480 | /* | |
481 | * xfs_inactive_symlink - free a symlink | |
482 | */ | |
483 | int | |
484 | xfs_inactive_symlink( | |
36b21dde | 485 | struct xfs_inode *ip) |
725eb1eb MT |
486 | { |
487 | struct xfs_mount *mp = ip->i_mount; | |
488 | int pathlen; | |
489 | ||
490 | trace_xfs_inactive_symlink(ip); | |
491 | ||
725eb1eb | 492 | if (XFS_FORCED_SHUTDOWN(mp)) |
2451337d | 493 | return -EIO; |
725eb1eb | 494 | |
36b21dde | 495 | xfs_ilock(ip, XFS_ILOCK_EXCL); |
725eb1eb | 496 | pathlen = (int)ip->i_d.di_size; |
43feeea8 | 497 | ASSERT(pathlen); |
725eb1eb | 498 | |
43feeea8 | 499 | if (pathlen <= 0 || pathlen > XFS_SYMLINK_MAXLEN) { |
725eb1eb MT |
500 | xfs_alert(mp, "%s: inode (0x%llx) bad symlink length (%d)", |
501 | __func__, (unsigned long long)ip->i_ino, pathlen); | |
36b21dde | 502 | xfs_iunlock(ip, XFS_ILOCK_EXCL); |
725eb1eb | 503 | ASSERT(0); |
2451337d | 504 | return -EFSCORRUPTED; |
725eb1eb MT |
505 | } |
506 | ||
43feeea8 DC |
507 | /* |
508 | * Inline fork state gets removed by xfs_difree() so we have nothing to | |
509 | * do here in that case. | |
510 | */ | |
725eb1eb | 511 | if (ip->i_df.if_flags & XFS_IFINLINE) { |
36b21dde | 512 | xfs_iunlock(ip, XFS_ILOCK_EXCL); |
725eb1eb MT |
513 | return 0; |
514 | } | |
515 | ||
36b21dde BF |
516 | xfs_iunlock(ip, XFS_ILOCK_EXCL); |
517 | ||
725eb1eb | 518 | /* remove the remote symlink */ |
36b21dde | 519 | return xfs_inactive_symlink_rmt(ip); |
725eb1eb | 520 | } |