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Commit | Line | Data |
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1efb473f BB |
1 | /* |
2 | * CDDL HEADER START | |
3 | * | |
4 | * The contents of this file are subject to the terms of the | |
5 | * Common Development and Distribution License (the "License"). | |
6 | * You may not use this file except in compliance with the License. | |
7 | * | |
8 | * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE | |
9 | * or http://www.opensolaris.org/os/licensing. | |
10 | * See the License for the specific language governing permissions | |
11 | * and limitations under the License. | |
12 | * | |
13 | * When distributing Covered Code, include this CDDL HEADER in each | |
14 | * file and include the License file at usr/src/OPENSOLARIS.LICENSE. | |
15 | * If applicable, add the following below this CDDL HEADER, with the | |
16 | * fields enclosed by brackets "[]" replaced with your own identifying | |
17 | * information: Portions Copyright [yyyy] [name of copyright owner] | |
18 | * | |
19 | * CDDL HEADER END | |
20 | */ | |
21 | /* | |
22 | * Copyright (c) 2011, Lawrence Livermore National Security, LLC. | |
5475aada | 23 | * Copyright (c) 2015 by Chunwei Chen. All rights reserved. |
1efb473f BB |
24 | */ |
25 | ||
26 | ||
f7b939bd CIK |
27 | #ifdef CONFIG_COMPAT |
28 | #include <linux/compat.h> | |
29 | #endif | |
93ce2b4c | 30 | #include <sys/file.h> |
119a394a | 31 | #include <sys/dmu_objset.h> |
1efb473f BB |
32 | #include <sys/zfs_vfsops.h> |
33 | #include <sys/zfs_vnops.h> | |
34 | #include <sys/zfs_znode.h> | |
9c5167d1 | 35 | #include <sys/zfs_project.h> |
1efb473f BB |
36 | |
37 | ||
126400a1 BB |
38 | static int |
39 | zpl_open(struct inode *ip, struct file *filp) | |
40 | { | |
81e97e21 | 41 | cred_t *cr = CRED(); |
126400a1 | 42 | int error; |
40d06e3c | 43 | fstrans_cookie_t cookie; |
126400a1 | 44 | |
7dc71949 CC |
45 | error = generic_file_open(ip, filp); |
46 | if (error) | |
47 | return (error); | |
48 | ||
81e97e21 | 49 | crhold(cr); |
40d06e3c | 50 | cookie = spl_fstrans_mark(); |
126400a1 | 51 | error = -zfs_open(ip, filp->f_mode, filp->f_flags, cr); |
40d06e3c | 52 | spl_fstrans_unmark(cookie); |
81e97e21 | 53 | crfree(cr); |
126400a1 BB |
54 | ASSERT3S(error, <=, 0); |
55 | ||
7dc71949 | 56 | return (error); |
126400a1 BB |
57 | } |
58 | ||
59 | static int | |
60 | zpl_release(struct inode *ip, struct file *filp) | |
61 | { | |
81e97e21 | 62 | cred_t *cr = CRED(); |
126400a1 | 63 | int error; |
40d06e3c | 64 | fstrans_cookie_t cookie; |
126400a1 | 65 | |
40d06e3c | 66 | cookie = spl_fstrans_mark(); |
78d7a5d7 | 67 | if (ITOZ(ip)->z_atime_dirty) |
1e8db771 | 68 | zfs_mark_inode_dirty(ip); |
78d7a5d7 | 69 | |
81e97e21 | 70 | crhold(cr); |
126400a1 | 71 | error = -zfs_close(ip, filp->f_flags, cr); |
40d06e3c | 72 | spl_fstrans_unmark(cookie); |
81e97e21 | 73 | crfree(cr); |
126400a1 BB |
74 | ASSERT3S(error, <=, 0); |
75 | ||
76 | return (error); | |
77 | } | |
78 | ||
1efb473f | 79 | static int |
9464b959 | 80 | zpl_iterate(struct file *filp, zpl_dir_context_t *ctx) |
1efb473f | 81 | { |
81e97e21 | 82 | cred_t *cr = CRED(); |
1efb473f | 83 | int error; |
40d06e3c | 84 | fstrans_cookie_t cookie; |
1efb473f | 85 | |
81e97e21 | 86 | crhold(cr); |
40d06e3c | 87 | cookie = spl_fstrans_mark(); |
d9c97ec0 | 88 | error = -zfs_readdir(file_inode(filp), ctx, cr); |
40d06e3c | 89 | spl_fstrans_unmark(cookie); |
81e97e21 | 90 | crfree(cr); |
1efb473f BB |
91 | ASSERT3S(error, <=, 0); |
92 | ||
93 | return (error); | |
94 | } | |
95 | ||
9baaa7de | 96 | #if !defined(HAVE_VFS_ITERATE) && !defined(HAVE_VFS_ITERATE_SHARED) |
0f37d0c8 RY |
97 | static int |
98 | zpl_readdir(struct file *filp, void *dirent, filldir_t filldir) | |
99 | { | |
9464b959 BB |
100 | zpl_dir_context_t ctx = |
101 | ZPL_DIR_CONTEXT_INIT(dirent, filldir, filp->f_pos); | |
0f37d0c8 RY |
102 | int error; |
103 | ||
104 | error = zpl_iterate(filp, &ctx); | |
105 | filp->f_pos = ctx.pos; | |
106 | ||
107 | return (error); | |
108 | } | |
9464b959 | 109 | #endif /* !HAVE_VFS_ITERATE && !HAVE_VFS_ITERATE_SHARED */ |
0f37d0c8 | 110 | |
adcd70bd | 111 | #if defined(HAVE_FSYNC_WITH_DENTRY) |
3117dd0b | 112 | /* |
adcd70bd BB |
113 | * Linux 2.6.x - 2.6.34 API, |
114 | * Through 2.6.34 the nfsd kernel server would pass a NULL 'file struct *' | |
115 | * to the fops->fsync() hook. For this reason, we must be careful not to | |
116 | * use filp unconditionally. | |
117 | */ | |
118 | static int | |
119 | zpl_fsync(struct file *filp, struct dentry *dentry, int datasync) | |
120 | { | |
121 | cred_t *cr = CRED(); | |
122 | int error; | |
40d06e3c | 123 | fstrans_cookie_t cookie; |
adcd70bd BB |
124 | |
125 | crhold(cr); | |
40d06e3c | 126 | cookie = spl_fstrans_mark(); |
adcd70bd | 127 | error = -zfs_fsync(dentry->d_inode, datasync, cr); |
40d06e3c | 128 | spl_fstrans_unmark(cookie); |
adcd70bd BB |
129 | crfree(cr); |
130 | ASSERT3S(error, <=, 0); | |
131 | ||
132 | return (error); | |
133 | } | |
134 | ||
7ca25051 | 135 | #ifdef HAVE_FILE_AIO_FSYNC |
cd3939c5 RY |
136 | static int |
137 | zpl_aio_fsync(struct kiocb *kiocb, int datasync) | |
138 | { | |
139 | struct file *filp = kiocb->ki_filp; | |
d9c97ec0 | 140 | return (zpl_fsync(filp, file_dentry(filp), datasync)); |
cd3939c5 | 141 | } |
7ca25051 D |
142 | #endif |
143 | ||
adcd70bd BB |
144 | #elif defined(HAVE_FSYNC_WITHOUT_DENTRY) |
145 | /* | |
146 | * Linux 2.6.35 - 3.0 API, | |
147 | * As of 2.6.35 the dentry argument to the fops->fsync() hook was deemed | |
3117dd0b BB |
148 | * redundant. The dentry is still accessible via filp->f_path.dentry, |
149 | * and we are guaranteed that filp will never be NULL. | |
3117dd0b | 150 | */ |
3117dd0b BB |
151 | static int |
152 | zpl_fsync(struct file *filp, int datasync) | |
153 | { | |
adcd70bd BB |
154 | struct inode *inode = filp->f_mapping->host; |
155 | cred_t *cr = CRED(); | |
156 | int error; | |
40d06e3c | 157 | fstrans_cookie_t cookie; |
adcd70bd BB |
158 | |
159 | crhold(cr); | |
40d06e3c | 160 | cookie = spl_fstrans_mark(); |
adcd70bd | 161 | error = -zfs_fsync(inode, datasync, cr); |
40d06e3c | 162 | spl_fstrans_unmark(cookie); |
adcd70bd BB |
163 | crfree(cr); |
164 | ASSERT3S(error, <=, 0); | |
165 | ||
166 | return (error); | |
167 | } | |
168 | ||
7ca25051 | 169 | #ifdef HAVE_FILE_AIO_FSYNC |
cd3939c5 RY |
170 | static int |
171 | zpl_aio_fsync(struct kiocb *kiocb, int datasync) | |
172 | { | |
173 | return (zpl_fsync(kiocb->ki_filp, datasync)); | |
174 | } | |
7ca25051 D |
175 | #endif |
176 | ||
adcd70bd BB |
177 | #elif defined(HAVE_FSYNC_RANGE) |
178 | /* | |
179 | * Linux 3.1 - 3.x API, | |
180 | * As of 3.1 the responsibility to call filemap_write_and_wait_range() has | |
181 | * been pushed down in to the .fsync() vfs hook. Additionally, the i_mutex | |
182 | * lock is no longer held by the caller, for zfs we don't require the lock | |
183 | * to be held so we don't acquire it. | |
184 | */ | |
3117dd0b | 185 | static int |
adcd70bd | 186 | zpl_fsync(struct file *filp, loff_t start, loff_t end, int datasync) |
1efb473f | 187 | { |
adcd70bd | 188 | struct inode *inode = filp->f_mapping->host; |
81e97e21 | 189 | cred_t *cr = CRED(); |
1efb473f | 190 | int error; |
40d06e3c | 191 | fstrans_cookie_t cookie; |
1efb473f | 192 | |
adcd70bd BB |
193 | error = filemap_write_and_wait_range(inode->i_mapping, start, end); |
194 | if (error) | |
195 | return (error); | |
196 | ||
81e97e21 | 197 | crhold(cr); |
40d06e3c | 198 | cookie = spl_fstrans_mark(); |
adcd70bd | 199 | error = -zfs_fsync(inode, datasync, cr); |
40d06e3c | 200 | spl_fstrans_unmark(cookie); |
81e97e21 | 201 | crfree(cr); |
1efb473f BB |
202 | ASSERT3S(error, <=, 0); |
203 | ||
204 | return (error); | |
205 | } | |
cd3939c5 | 206 | |
7ca25051 | 207 | #ifdef HAVE_FILE_AIO_FSYNC |
cd3939c5 RY |
208 | static int |
209 | zpl_aio_fsync(struct kiocb *kiocb, int datasync) | |
210 | { | |
57ae8400 | 211 | return (zpl_fsync(kiocb->ki_filp, kiocb->ki_pos, -1, datasync)); |
cd3939c5 | 212 | } |
7ca25051 D |
213 | #endif |
214 | ||
adcd70bd BB |
215 | #else |
216 | #error "Unsupported fops->fsync() implementation" | |
217 | #endif | |
1efb473f | 218 | |
5475aada | 219 | static ssize_t |
cd3939c5 | 220 | zpl_read_common_iovec(struct inode *ip, const struct iovec *iovp, size_t count, |
5475aada CC |
221 | unsigned long nr_segs, loff_t *ppos, uio_seg_t segment, int flags, |
222 | cred_t *cr, size_t skip) | |
1efb473f | 223 | { |
e3dc14b8 | 224 | ssize_t read; |
1efb473f | 225 | uio_t uio; |
cd3939c5 | 226 | int error; |
40d06e3c | 227 | fstrans_cookie_t cookie; |
1efb473f | 228 | |
5475aada CC |
229 | uio.uio_iov = iovp; |
230 | uio.uio_skip = skip; | |
cd3939c5 RY |
231 | uio.uio_resid = count; |
232 | uio.uio_iovcnt = nr_segs; | |
233 | uio.uio_loffset = *ppos; | |
1efb473f BB |
234 | uio.uio_limit = MAXOFFSET_T; |
235 | uio.uio_segflg = segment; | |
236 | ||
40d06e3c | 237 | cookie = spl_fstrans_mark(); |
1efb473f | 238 | error = -zfs_read(ip, &uio, flags, cr); |
40d06e3c | 239 | spl_fstrans_unmark(cookie); |
1efb473f BB |
240 | if (error < 0) |
241 | return (error); | |
242 | ||
cd3939c5 RY |
243 | read = count - uio.uio_resid; |
244 | *ppos += read; | |
e3dc14b8 BB |
245 | |
246 | return (read); | |
1efb473f BB |
247 | } |
248 | ||
cd3939c5 RY |
249 | inline ssize_t |
250 | zpl_read_common(struct inode *ip, const char *buf, size_t len, loff_t *ppos, | |
251 | uio_seg_t segment, int flags, cred_t *cr) | |
252 | { | |
253 | struct iovec iov; | |
254 | ||
255 | iov.iov_base = (void *)buf; | |
256 | iov.iov_len = len; | |
257 | ||
258 | return (zpl_read_common_iovec(ip, &iov, len, 1, ppos, segment, | |
5475aada | 259 | flags, cr, 0)); |
cd3939c5 RY |
260 | } |
261 | ||
cd3939c5 | 262 | static ssize_t |
57ae8400 | 263 | zpl_iter_read_common(struct kiocb *kiocb, const struct iovec *iovp, |
5475aada | 264 | unsigned long nr_segs, size_t count, uio_seg_t seg, size_t skip) |
cd3939c5 RY |
265 | { |
266 | cred_t *cr = CRED(); | |
267 | struct file *filp = kiocb->ki_filp; | |
cd3939c5 | 268 | ssize_t read; |
cd3939c5 RY |
269 | |
270 | crhold(cr); | |
5475aada CC |
271 | read = zpl_read_common_iovec(filp->f_mapping->host, iovp, count, |
272 | nr_segs, &kiocb->ki_pos, seg, filp->f_flags, cr, skip); | |
cd3939c5 RY |
273 | crfree(cr); |
274 | ||
0df9673f | 275 | file_accessed(filp); |
1efb473f BB |
276 | return (read); |
277 | } | |
278 | ||
57ae8400 MK |
279 | #if defined(HAVE_VFS_RW_ITERATE) |
280 | static ssize_t | |
281 | zpl_iter_read(struct kiocb *kiocb, struct iov_iter *to) | |
282 | { | |
5475aada CC |
283 | ssize_t ret; |
284 | uio_seg_t seg = UIO_USERSPACE; | |
285 | if (to->type & ITER_KVEC) | |
286 | seg = UIO_SYSSPACE; | |
287 | if (to->type & ITER_BVEC) | |
288 | seg = UIO_BVEC; | |
289 | ret = zpl_iter_read_common(kiocb, to->iov, to->nr_segs, | |
290 | iov_iter_count(to), seg, to->iov_offset); | |
291 | if (ret > 0) | |
292 | iov_iter_advance(to, ret); | |
293 | return (ret); | |
57ae8400 MK |
294 | } |
295 | #else | |
296 | static ssize_t | |
297 | zpl_aio_read(struct kiocb *kiocb, const struct iovec *iovp, | |
298 | unsigned long nr_segs, loff_t pos) | |
299 | { | |
933ec999 CC |
300 | ssize_t ret; |
301 | size_t count; | |
302 | ||
303 | ret = generic_segment_checks(iovp, &nr_segs, &count, VERIFY_WRITE); | |
304 | if (ret) | |
305 | return (ret); | |
306 | ||
307 | return (zpl_iter_read_common(kiocb, iovp, nr_segs, count, | |
5475aada | 308 | UIO_USERSPACE, 0)); |
57ae8400 MK |
309 | } |
310 | #endif /* HAVE_VFS_RW_ITERATE */ | |
311 | ||
5475aada | 312 | static ssize_t |
cd3939c5 | 313 | zpl_write_common_iovec(struct inode *ip, const struct iovec *iovp, size_t count, |
5475aada CC |
314 | unsigned long nr_segs, loff_t *ppos, uio_seg_t segment, int flags, |
315 | cred_t *cr, size_t skip) | |
1efb473f | 316 | { |
e3dc14b8 | 317 | ssize_t wrote; |
1efb473f | 318 | uio_t uio; |
cd3939c5 | 319 | int error; |
40d06e3c | 320 | fstrans_cookie_t cookie; |
1efb473f | 321 | |
1efdc45e BB |
322 | if (flags & O_APPEND) |
323 | *ppos = i_size_read(ip); | |
324 | ||
5475aada CC |
325 | uio.uio_iov = iovp; |
326 | uio.uio_skip = skip; | |
cd3939c5 RY |
327 | uio.uio_resid = count; |
328 | uio.uio_iovcnt = nr_segs; | |
329 | uio.uio_loffset = *ppos; | |
1efb473f BB |
330 | uio.uio_limit = MAXOFFSET_T; |
331 | uio.uio_segflg = segment; | |
332 | ||
40d06e3c | 333 | cookie = spl_fstrans_mark(); |
1efb473f | 334 | error = -zfs_write(ip, &uio, flags, cr); |
40d06e3c | 335 | spl_fstrans_unmark(cookie); |
1efb473f BB |
336 | if (error < 0) |
337 | return (error); | |
338 | ||
cd3939c5 RY |
339 | wrote = count - uio.uio_resid; |
340 | *ppos += wrote; | |
e3dc14b8 BB |
341 | |
342 | return (wrote); | |
1efb473f | 343 | } |
933ec999 | 344 | |
cd3939c5 RY |
345 | inline ssize_t |
346 | zpl_write_common(struct inode *ip, const char *buf, size_t len, loff_t *ppos, | |
347 | uio_seg_t segment, int flags, cred_t *cr) | |
348 | { | |
349 | struct iovec iov; | |
350 | ||
351 | iov.iov_base = (void *)buf; | |
352 | iov.iov_len = len; | |
353 | ||
354 | return (zpl_write_common_iovec(ip, &iov, len, 1, ppos, segment, | |
5475aada | 355 | flags, cr, 0)); |
cd3939c5 | 356 | } |
1efb473f | 357 | |
cd3939c5 | 358 | static ssize_t |
57ae8400 | 359 | zpl_iter_write_common(struct kiocb *kiocb, const struct iovec *iovp, |
5475aada | 360 | unsigned long nr_segs, size_t count, uio_seg_t seg, size_t skip) |
cd3939c5 RY |
361 | { |
362 | cred_t *cr = CRED(); | |
363 | struct file *filp = kiocb->ki_filp; | |
cd3939c5 | 364 | ssize_t wrote; |
cd3939c5 RY |
365 | |
366 | crhold(cr); | |
5475aada CC |
367 | wrote = zpl_write_common_iovec(filp->f_mapping->host, iovp, count, |
368 | nr_segs, &kiocb->ki_pos, seg, filp->f_flags, cr, skip); | |
cd3939c5 RY |
369 | crfree(cr); |
370 | ||
1efb473f BB |
371 | return (wrote); |
372 | } | |
373 | ||
57ae8400 MK |
374 | #if defined(HAVE_VFS_RW_ITERATE) |
375 | static ssize_t | |
376 | zpl_iter_write(struct kiocb *kiocb, struct iov_iter *from) | |
377 | { | |
933ec999 | 378 | size_t count; |
5475aada CC |
379 | ssize_t ret; |
380 | uio_seg_t seg = UIO_USERSPACE; | |
933ec999 CC |
381 | |
382 | #ifndef HAVE_GENERIC_WRITE_CHECKS_KIOCB | |
383 | struct file *file = kiocb->ki_filp; | |
384 | struct address_space *mapping = file->f_mapping; | |
385 | struct inode *ip = mapping->host; | |
386 | int isblk = S_ISBLK(ip->i_mode); | |
387 | ||
388 | count = iov_iter_count(from); | |
389 | ret = generic_write_checks(file, &kiocb->ki_pos, &count, isblk); | |
c7af63d6 CC |
390 | if (ret) |
391 | return (ret); | |
933ec999 CC |
392 | #else |
393 | /* | |
394 | * XXX - ideally this check should be in the same lock region with | |
395 | * write operations, so that there's no TOCTTOU race when doing | |
396 | * append and someone else grow the file. | |
397 | */ | |
398 | ret = generic_write_checks(kiocb, from); | |
933ec999 CC |
399 | if (ret <= 0) |
400 | return (ret); | |
c7af63d6 CC |
401 | count = ret; |
402 | #endif | |
933ec999 | 403 | |
5475aada CC |
404 | if (from->type & ITER_KVEC) |
405 | seg = UIO_SYSSPACE; | |
406 | if (from->type & ITER_BVEC) | |
407 | seg = UIO_BVEC; | |
933ec999 | 408 | |
5475aada | 409 | ret = zpl_iter_write_common(kiocb, from->iov, from->nr_segs, |
933ec999 | 410 | count, seg, from->iov_offset); |
5475aada CC |
411 | if (ret > 0) |
412 | iov_iter_advance(from, ret); | |
933ec999 | 413 | |
5475aada | 414 | return (ret); |
57ae8400 MK |
415 | } |
416 | #else | |
417 | static ssize_t | |
418 | zpl_aio_write(struct kiocb *kiocb, const struct iovec *iovp, | |
419 | unsigned long nr_segs, loff_t pos) | |
420 | { | |
933ec999 CC |
421 | struct file *file = kiocb->ki_filp; |
422 | struct address_space *mapping = file->f_mapping; | |
423 | struct inode *ip = mapping->host; | |
424 | int isblk = S_ISBLK(ip->i_mode); | |
425 | size_t count; | |
426 | ssize_t ret; | |
427 | ||
428 | ret = generic_segment_checks(iovp, &nr_segs, &count, VERIFY_READ); | |
429 | if (ret) | |
430 | return (ret); | |
431 | ||
432 | ret = generic_write_checks(file, &pos, &count, isblk); | |
433 | if (ret) | |
434 | return (ret); | |
435 | ||
436 | return (zpl_iter_write_common(kiocb, iovp, nr_segs, count, | |
5475aada | 437 | UIO_USERSPACE, 0)); |
57ae8400 MK |
438 | } |
439 | #endif /* HAVE_VFS_RW_ITERATE */ | |
440 | ||
a584ef26 BB |
441 | #if defined(HAVE_VFS_RW_ITERATE) |
442 | static ssize_t | |
443 | zpl_direct_IO_impl(int rw, struct kiocb *kiocb, struct iov_iter *iter) | |
444 | { | |
445 | if (rw == WRITE) | |
446 | return (zpl_iter_write(kiocb, iter)); | |
447 | else | |
448 | return (zpl_iter_read(kiocb, iter)); | |
449 | } | |
450 | #if defined(HAVE_VFS_DIRECT_IO_ITER) | |
451 | static ssize_t | |
452 | zpl_direct_IO(struct kiocb *kiocb, struct iov_iter *iter) | |
453 | { | |
454 | return (zpl_direct_IO_impl(iov_iter_rw(iter), kiocb, iter)); | |
455 | } | |
456 | #elif defined(HAVE_VFS_DIRECT_IO_ITER_OFFSET) | |
457 | static ssize_t | |
458 | zpl_direct_IO(struct kiocb *kiocb, struct iov_iter *iter, loff_t pos) | |
459 | { | |
460 | ASSERT3S(pos, ==, kiocb->ki_pos); | |
461 | return (zpl_direct_IO_impl(iov_iter_rw(iter), kiocb, iter)); | |
462 | } | |
463 | #elif defined(HAVE_VFS_DIRECT_IO_ITER_RW_OFFSET) | |
464 | static ssize_t | |
465 | zpl_direct_IO(int rw, struct kiocb *kiocb, struct iov_iter *iter, loff_t pos) | |
466 | { | |
467 | ASSERT3S(pos, ==, kiocb->ki_pos); | |
468 | return (zpl_direct_IO_impl(rw, kiocb, iter)); | |
469 | } | |
470 | #else | |
471 | #error "Unknown direct IO interface" | |
472 | #endif | |
473 | ||
474 | #else | |
475 | ||
476 | #if defined(HAVE_VFS_DIRECT_IO_IOVEC) | |
477 | static ssize_t | |
478 | zpl_direct_IO(int rw, struct kiocb *kiocb, const struct iovec *iovp, | |
479 | loff_t pos, unsigned long nr_segs) | |
480 | { | |
481 | if (rw == WRITE) | |
482 | return (zpl_aio_write(kiocb, iovp, nr_segs, pos)); | |
483 | else | |
484 | return (zpl_aio_read(kiocb, iovp, nr_segs, pos)); | |
485 | } | |
486 | #else | |
487 | #error "Unknown direct IO interface" | |
488 | #endif | |
489 | ||
490 | #endif /* HAVE_VFS_RW_ITERATE */ | |
491 | ||
802e7b5f LD |
492 | static loff_t |
493 | zpl_llseek(struct file *filp, loff_t offset, int whence) | |
494 | { | |
495 | #if defined(SEEK_HOLE) && defined(SEEK_DATA) | |
40d06e3c TC |
496 | fstrans_cookie_t cookie; |
497 | ||
802e7b5f LD |
498 | if (whence == SEEK_DATA || whence == SEEK_HOLE) { |
499 | struct inode *ip = filp->f_mapping->host; | |
500 | loff_t maxbytes = ip->i_sb->s_maxbytes; | |
501 | loff_t error; | |
502 | ||
9baaa7de | 503 | spl_inode_lock_shared(ip); |
40d06e3c | 504 | cookie = spl_fstrans_mark(); |
802e7b5f | 505 | error = -zfs_holey(ip, whence, &offset); |
40d06e3c | 506 | spl_fstrans_unmark(cookie); |
802e7b5f LD |
507 | if (error == 0) |
508 | error = lseek_execute(filp, ip, offset, maxbytes); | |
9baaa7de | 509 | spl_inode_unlock_shared(ip); |
802e7b5f LD |
510 | |
511 | return (error); | |
512 | } | |
513 | #endif /* SEEK_HOLE && SEEK_DATA */ | |
514 | ||
d1d7e268 | 515 | return (generic_file_llseek(filp, offset, whence)); |
802e7b5f LD |
516 | } |
517 | ||
c0d35759 BB |
518 | /* |
519 | * It's worth taking a moment to describe how mmap is implemented | |
520 | * for zfs because it differs considerably from other Linux filesystems. | |
521 | * However, this issue is handled the same way under OpenSolaris. | |
522 | * | |
523 | * The issue is that by design zfs bypasses the Linux page cache and | |
524 | * leaves all caching up to the ARC. This has been shown to work | |
525 | * well for the common read(2)/write(2) case. However, mmap(2) | |
526 | * is problem because it relies on being tightly integrated with the | |
527 | * page cache. To handle this we cache mmap'ed files twice, once in | |
528 | * the ARC and a second time in the page cache. The code is careful | |
529 | * to keep both copies synchronized. | |
530 | * | |
531 | * When a file with an mmap'ed region is written to using write(2) | |
532 | * both the data in the ARC and existing pages in the page cache | |
533 | * are updated. For a read(2) data will be read first from the page | |
534 | * cache then the ARC if needed. Neither a write(2) or read(2) will | |
535 | * will ever result in new pages being added to the page cache. | |
536 | * | |
537 | * New pages are added to the page cache only via .readpage() which | |
538 | * is called when the vfs needs to read a page off disk to back the | |
539 | * virtual memory region. These pages may be modified without | |
540 | * notifying the ARC and will be written out periodically via | |
541 | * .writepage(). This will occur due to either a sync or the usual | |
542 | * page aging behavior. Note because a read(2) of a mmap'ed file | |
543 | * will always check the page cache first even when the ARC is out | |
544 | * of date correct data will still be returned. | |
545 | * | |
546 | * While this implementation ensures correct behavior it does have | |
547 | * have some drawbacks. The most obvious of which is that it | |
548 | * increases the required memory footprint when access mmap'ed | |
549 | * files. It also adds additional complexity to the code keeping | |
550 | * both caches synchronized. | |
551 | * | |
552 | * Longer term it may be possible to cleanly resolve this wart by | |
553 | * mapping page cache pages directly on to the ARC buffers. The | |
554 | * Linux address space operations are flexible enough to allow | |
555 | * selection of which pages back a particular index. The trick | |
556 | * would be working out the details of which subsystem is in | |
557 | * charge, the ARC, the page cache, or both. It may also prove | |
558 | * helpful to move the ARC buffers to a scatter-gather lists | |
559 | * rather than a vmalloc'ed region. | |
560 | */ | |
561 | static int | |
562 | zpl_mmap(struct file *filp, struct vm_area_struct *vma) | |
563 | { | |
e2e7aa2d BB |
564 | struct inode *ip = filp->f_mapping->host; |
565 | znode_t *zp = ITOZ(ip); | |
c0d35759 | 566 | int error; |
40d06e3c | 567 | fstrans_cookie_t cookie; |
c0d35759 | 568 | |
40d06e3c | 569 | cookie = spl_fstrans_mark(); |
e2e7aa2d BB |
570 | error = -zfs_map(ip, vma->vm_pgoff, (caddr_t *)vma->vm_start, |
571 | (size_t)(vma->vm_end - vma->vm_start), vma->vm_flags); | |
40d06e3c | 572 | spl_fstrans_unmark(cookie); |
e2e7aa2d BB |
573 | if (error) |
574 | return (error); | |
575 | ||
c0d35759 BB |
576 | error = generic_file_mmap(filp, vma); |
577 | if (error) | |
578 | return (error); | |
579 | ||
580 | mutex_enter(&zp->z_lock); | |
18a2485f | 581 | zp->z_is_mapped = B_TRUE; |
c0d35759 BB |
582 | mutex_exit(&zp->z_lock); |
583 | ||
584 | return (error); | |
585 | } | |
586 | ||
587 | /* | |
588 | * Populate a page with data for the Linux page cache. This function is | |
589 | * only used to support mmap(2). There will be an identical copy of the | |
590 | * data in the ARC which is kept up to date via .write() and .writepage(). | |
591 | * | |
592 | * Current this function relies on zpl_read_common() and the O_DIRECT | |
593 | * flag to read in a page. This works but the more correct way is to | |
594 | * update zfs_fillpage() to be Linux friendly and use that interface. | |
595 | */ | |
596 | static int | |
597 | zpl_readpage(struct file *filp, struct page *pp) | |
598 | { | |
599 | struct inode *ip; | |
dde471ef | 600 | struct page *pl[1]; |
c0d35759 | 601 | int error = 0; |
40d06e3c | 602 | fstrans_cookie_t cookie; |
c0d35759 BB |
603 | |
604 | ASSERT(PageLocked(pp)); | |
605 | ip = pp->mapping->host; | |
dde471ef | 606 | pl[0] = pp; |
c0d35759 | 607 | |
40d06e3c | 608 | cookie = spl_fstrans_mark(); |
dde471ef | 609 | error = -zfs_getpage(ip, pl, 1); |
40d06e3c | 610 | spl_fstrans_unmark(cookie); |
c0d35759 | 611 | |
dde471ef PJ |
612 | if (error) { |
613 | SetPageError(pp); | |
614 | ClearPageUptodate(pp); | |
615 | } else { | |
616 | ClearPageError(pp); | |
617 | SetPageUptodate(pp); | |
618 | flush_dcache_page(pp); | |
619 | } | |
c0d35759 | 620 | |
dde471ef | 621 | unlock_page(pp); |
d1d7e268 | 622 | return (error); |
dde471ef | 623 | } |
c0d35759 | 624 | |
f3ab88d6 BB |
625 | /* |
626 | * Populate a set of pages with data for the Linux page cache. This | |
627 | * function will only be called for read ahead and never for demand | |
628 | * paging. For simplicity, the code relies on read_cache_pages() to | |
629 | * correctly lock each page for IO and call zpl_readpage(). | |
630 | */ | |
631 | static int | |
632 | zpl_readpages(struct file *filp, struct address_space *mapping, | |
4ea3f864 | 633 | struct list_head *pages, unsigned nr_pages) |
f3ab88d6 | 634 | { |
95d9fd02 BB |
635 | return (read_cache_pages(mapping, pages, |
636 | (filler_t *)zpl_readpage, filp)); | |
f3ab88d6 BB |
637 | } |
638 | ||
dde471ef PJ |
639 | int |
640 | zpl_putpage(struct page *pp, struct writeback_control *wbc, void *data) | |
641 | { | |
3c0e5c0f | 642 | struct address_space *mapping = data; |
92119cc2 | 643 | fstrans_cookie_t cookie; |
3c0e5c0f BB |
644 | |
645 | ASSERT(PageLocked(pp)); | |
646 | ASSERT(!PageWriteback(pp)); | |
8630650a | 647 | |
92119cc2 | 648 | cookie = spl_fstrans_mark(); |
62c4165a | 649 | (void) zfs_putpage(mapping->host, pp, wbc); |
92119cc2 | 650 | spl_fstrans_unmark(cookie); |
c0d35759 | 651 | |
3c0e5c0f | 652 | return (0); |
dde471ef | 653 | } |
c0d35759 | 654 | |
dde471ef PJ |
655 | static int |
656 | zpl_writepages(struct address_space *mapping, struct writeback_control *wbc) | |
657 | { | |
119a394a | 658 | znode_t *zp = ITOZ(mapping->host); |
0037b49e | 659 | zfsvfs_t *zfsvfs = ITOZSB(mapping->host); |
119a394a ED |
660 | enum writeback_sync_modes sync_mode; |
661 | int result; | |
662 | ||
0037b49e BB |
663 | ZFS_ENTER(zfsvfs); |
664 | if (zfsvfs->z_os->os_sync == ZFS_SYNC_ALWAYS) | |
119a394a | 665 | wbc->sync_mode = WB_SYNC_ALL; |
0037b49e | 666 | ZFS_EXIT(zfsvfs); |
119a394a ED |
667 | sync_mode = wbc->sync_mode; |
668 | ||
669 | /* | |
670 | * We don't want to run write_cache_pages() in SYNC mode here, because | |
671 | * that would make putpage() wait for a single page to be committed to | |
672 | * disk every single time, resulting in atrocious performance. Instead | |
673 | * we run it once in non-SYNC mode so that the ZIL gets all the data, | |
674 | * and then we commit it all in one go. | |
675 | */ | |
676 | wbc->sync_mode = WB_SYNC_NONE; | |
677 | result = write_cache_pages(mapping, wbc, zpl_putpage, mapping); | |
678 | if (sync_mode != wbc->sync_mode) { | |
0037b49e | 679 | ZFS_ENTER(zfsvfs); |
119a394a | 680 | ZFS_VERIFY_ZP(zp); |
0037b49e BB |
681 | if (zfsvfs->z_log != NULL) |
682 | zil_commit(zfsvfs->z_log, zp->z_id); | |
683 | ZFS_EXIT(zfsvfs); | |
119a394a ED |
684 | |
685 | /* | |
686 | * We need to call write_cache_pages() again (we can't just | |
687 | * return after the commit) because the previous call in | |
688 | * non-SYNC mode does not guarantee that we got all the dirty | |
689 | * pages (see the implementation of write_cache_pages() for | |
690 | * details). That being said, this is a no-op in most cases. | |
691 | */ | |
692 | wbc->sync_mode = sync_mode; | |
693 | result = write_cache_pages(mapping, wbc, zpl_putpage, mapping); | |
694 | } | |
695 | return (result); | |
c0d35759 BB |
696 | } |
697 | ||
698 | /* | |
699 | * Write out dirty pages to the ARC, this function is only required to | |
700 | * support mmap(2). Mapped pages may be dirtied by memory operations | |
701 | * which never call .write(). These dirty pages are kept in sync with | |
702 | * the ARC buffers via this hook. | |
c0d35759 BB |
703 | */ |
704 | static int | |
705 | zpl_writepage(struct page *pp, struct writeback_control *wbc) | |
706 | { | |
119a394a ED |
707 | if (ITOZSB(pp->mapping->host)->z_os->os_sync == ZFS_SYNC_ALWAYS) |
708 | wbc->sync_mode = WB_SYNC_ALL; | |
709 | ||
710 | return (zpl_putpage(pp, wbc, pp->mapping)); | |
c0d35759 BB |
711 | } |
712 | ||
cb2d1901 ED |
713 | /* |
714 | * The only flag combination which matches the behavior of zfs_space() | |
223df016 TC |
715 | * is FALLOC_FL_KEEP_SIZE | FALLOC_FL_PUNCH_HOLE. The FALLOC_FL_PUNCH_HOLE |
716 | * flag was introduced in the 2.6.38 kernel. | |
cb2d1901 | 717 | */ |
223df016 | 718 | #if defined(HAVE_FILE_FALLOCATE) || defined(HAVE_INODE_FALLOCATE) |
cb2d1901 ED |
719 | long |
720 | zpl_fallocate_common(struct inode *ip, int mode, loff_t offset, loff_t len) | |
721 | { | |
cb2d1901 ED |
722 | int error = -EOPNOTSUPP; |
723 | ||
223df016 TC |
724 | #if defined(FALLOC_FL_PUNCH_HOLE) && defined(FALLOC_FL_KEEP_SIZE) |
725 | cred_t *cr = CRED(); | |
726 | flock64_t bf; | |
727 | loff_t olen; | |
40d06e3c | 728 | fstrans_cookie_t cookie; |
223df016 TC |
729 | |
730 | if (mode != (FALLOC_FL_KEEP_SIZE | FALLOC_FL_PUNCH_HOLE)) | |
731 | return (error); | |
cb2d1901 | 732 | |
223df016 TC |
733 | if (offset < 0 || len <= 0) |
734 | return (-EINVAL); | |
cb2d1901 | 735 | |
223df016 TC |
736 | spl_inode_lock(ip); |
737 | olen = i_size_read(ip); | |
cb2d1901 | 738 | |
223df016 TC |
739 | if (offset > olen) { |
740 | spl_inode_unlock(ip); | |
741 | return (0); | |
cb2d1901 | 742 | } |
223df016 TC |
743 | if (offset + len > olen) |
744 | len = olen - offset; | |
745 | bf.l_type = F_WRLCK; | |
746 | bf.l_whence = 0; | |
747 | bf.l_start = offset; | |
748 | bf.l_len = len; | |
749 | bf.l_pid = 0; | |
750 | ||
9fa4db44 | 751 | crhold(cr); |
40d06e3c | 752 | cookie = spl_fstrans_mark(); |
223df016 | 753 | error = -zfs_space(ip, F_FREESP, &bf, FWRITE, offset, cr); |
40d06e3c | 754 | spl_fstrans_unmark(cookie); |
223df016 | 755 | spl_inode_unlock(ip); |
cb2d1901 ED |
756 | |
757 | crfree(cr); | |
223df016 | 758 | #endif /* defined(FALLOC_FL_PUNCH_HOLE) && defined(FALLOC_FL_KEEP_SIZE) */ |
cb2d1901 ED |
759 | |
760 | ASSERT3S(error, <=, 0); | |
761 | return (error); | |
762 | } | |
223df016 | 763 | #endif /* defined(HAVE_FILE_FALLOCATE) || defined(HAVE_INODE_FALLOCATE) */ |
cb2d1901 ED |
764 | |
765 | #ifdef HAVE_FILE_FALLOCATE | |
766 | static long | |
767 | zpl_fallocate(struct file *filp, int mode, loff_t offset, loff_t len) | |
768 | { | |
d9c97ec0 | 769 | return zpl_fallocate_common(file_inode(filp), |
cb2d1901 ED |
770 | mode, offset, len); |
771 | } | |
772 | #endif /* HAVE_FILE_FALLOCATE */ | |
773 | ||
9c5167d1 NF |
774 | #define ZFS_FL_USER_VISIBLE (FS_FL_USER_VISIBLE | ZFS_PROJINHERIT_FL) |
775 | #define ZFS_FL_USER_MODIFIABLE (FS_FL_USER_MODIFIABLE | ZFS_PROJINHERIT_FL) | |
776 | ||
777 | static uint32_t | |
778 | __zpl_ioctl_getflags(struct inode *ip) | |
9d317793 | 779 | { |
9d317793 | 780 | uint64_t zfs_flags = ITOZ(ip)->z_pflags; |
9c5167d1 | 781 | uint32_t ioctl_flags = 0; |
9d317793 RY |
782 | |
783 | if (zfs_flags & ZFS_IMMUTABLE) | |
784 | ioctl_flags |= FS_IMMUTABLE_FL; | |
785 | ||
786 | if (zfs_flags & ZFS_APPENDONLY) | |
787 | ioctl_flags |= FS_APPEND_FL; | |
788 | ||
789 | if (zfs_flags & ZFS_NODUMP) | |
790 | ioctl_flags |= FS_NODUMP_FL; | |
791 | ||
9c5167d1 NF |
792 | if (zfs_flags & ZFS_PROJINHERIT) |
793 | ioctl_flags |= ZFS_PROJINHERIT_FL; | |
9d317793 | 794 | |
9c5167d1 NF |
795 | return (ioctl_flags & ZFS_FL_USER_VISIBLE); |
796 | } | |
9d317793 | 797 | |
9c5167d1 NF |
798 | /* |
799 | * Map zfs file z_pflags (xvattr_t) to linux file attributes. Only file | |
800 | * attributes common to both Linux and Solaris are mapped. | |
801 | */ | |
802 | static int | |
803 | zpl_ioctl_getflags(struct file *filp, void __user *arg) | |
804 | { | |
805 | uint32_t flags; | |
806 | int err; | |
807 | ||
808 | flags = __zpl_ioctl_getflags(file_inode(filp)); | |
809 | err = copy_to_user(arg, &flags, sizeof (flags)); | |
810 | ||
811 | return (err); | |
9d317793 RY |
812 | } |
813 | ||
814 | /* | |
815 | * fchange() is a helper macro to detect if we have been asked to change a | |
816 | * flag. This is ugly, but the requirement that we do this is a consequence of | |
817 | * how the Linux file attribute interface was designed. Another consequence is | |
818 | * that concurrent modification of files suffers from a TOCTOU race. Neither | |
819 | * are things we can fix without modifying the kernel-userland interface, which | |
820 | * is outside of our jurisdiction. | |
821 | */ | |
822 | ||
c360af54 | 823 | #define fchange(f0, f1, b0, b1) (!((f0) & (b0)) != !((f1) & (b1))) |
9d317793 RY |
824 | |
825 | static int | |
9c5167d1 | 826 | __zpl_ioctl_setflags(struct inode *ip, uint32_t ioctl_flags, xvattr_t *xva) |
9d317793 | 827 | { |
9c5167d1 NF |
828 | uint64_t zfs_flags = ITOZ(ip)->z_pflags; |
829 | xoptattr_t *xoap; | |
9d317793 | 830 | |
9c5167d1 NF |
831 | if (ioctl_flags & ~(FS_IMMUTABLE_FL | FS_APPEND_FL | FS_NODUMP_FL | |
832 | ZFS_PROJINHERIT_FL)) | |
9d317793 RY |
833 | return (-EOPNOTSUPP); |
834 | ||
9c5167d1 | 835 | if (ioctl_flags & ~ZFS_FL_USER_MODIFIABLE) |
9d317793 RY |
836 | return (-EACCES); |
837 | ||
838 | if ((fchange(ioctl_flags, zfs_flags, FS_IMMUTABLE_FL, ZFS_IMMUTABLE) || | |
839 | fchange(ioctl_flags, zfs_flags, FS_APPEND_FL, ZFS_APPENDONLY)) && | |
840 | !capable(CAP_LINUX_IMMUTABLE)) | |
841 | return (-EACCES); | |
842 | ||
843 | if (!zpl_inode_owner_or_capable(ip)) | |
844 | return (-EACCES); | |
845 | ||
9c5167d1 NF |
846 | xva_init(xva); |
847 | xoap = xva_getxoptattr(xva); | |
9d317793 | 848 | |
9c5167d1 | 849 | XVA_SET_REQ(xva, XAT_IMMUTABLE); |
9d317793 RY |
850 | if (ioctl_flags & FS_IMMUTABLE_FL) |
851 | xoap->xoa_immutable = B_TRUE; | |
852 | ||
9c5167d1 | 853 | XVA_SET_REQ(xva, XAT_APPENDONLY); |
9d317793 RY |
854 | if (ioctl_flags & FS_APPEND_FL) |
855 | xoap->xoa_appendonly = B_TRUE; | |
856 | ||
9c5167d1 | 857 | XVA_SET_REQ(xva, XAT_NODUMP); |
9d317793 RY |
858 | if (ioctl_flags & FS_NODUMP_FL) |
859 | xoap->xoa_nodump = B_TRUE; | |
860 | ||
9c5167d1 NF |
861 | XVA_SET_REQ(xva, XAT_PROJINHERIT); |
862 | if (ioctl_flags & ZFS_PROJINHERIT_FL) | |
863 | xoap->xoa_projinherit = B_TRUE; | |
864 | ||
865 | return (0); | |
866 | } | |
867 | ||
868 | static int | |
869 | zpl_ioctl_setflags(struct file *filp, void __user *arg) | |
870 | { | |
871 | struct inode *ip = file_inode(filp); | |
872 | uint32_t flags; | |
873 | cred_t *cr = CRED(); | |
874 | xvattr_t xva; | |
875 | int err; | |
876 | fstrans_cookie_t cookie; | |
877 | ||
878 | if (copy_from_user(&flags, arg, sizeof (flags))) | |
879 | return (-EFAULT); | |
880 | ||
881 | err = __zpl_ioctl_setflags(ip, flags, &xva); | |
882 | if (err) | |
883 | return (err); | |
884 | ||
9d317793 | 885 | crhold(cr); |
40d06e3c | 886 | cookie = spl_fstrans_mark(); |
9c5167d1 | 887 | err = -zfs_setattr(ip, (vattr_t *)&xva, 0, cr); |
40d06e3c | 888 | spl_fstrans_unmark(cookie); |
9d317793 RY |
889 | crfree(cr); |
890 | ||
9c5167d1 NF |
891 | return (err); |
892 | } | |
893 | ||
894 | static int | |
895 | zpl_ioctl_getxattr(struct file *filp, void __user *arg) | |
896 | { | |
897 | zfsxattr_t fsx = { 0 }; | |
898 | struct inode *ip = file_inode(filp); | |
899 | int err; | |
900 | ||
901 | fsx.fsx_xflags = __zpl_ioctl_getflags(ip); | |
902 | fsx.fsx_projid = ITOZ(ip)->z_projid; | |
903 | err = copy_to_user(arg, &fsx, sizeof (fsx)); | |
904 | ||
905 | return (err); | |
906 | } | |
907 | ||
908 | static int | |
909 | zpl_ioctl_setxattr(struct file *filp, void __user *arg) | |
910 | { | |
911 | struct inode *ip = file_inode(filp); | |
912 | zfsxattr_t fsx; | |
913 | cred_t *cr = CRED(); | |
914 | xvattr_t xva; | |
915 | xoptattr_t *xoap; | |
916 | int err; | |
917 | fstrans_cookie_t cookie; | |
918 | ||
919 | if (copy_from_user(&fsx, arg, sizeof (fsx))) | |
920 | return (-EFAULT); | |
921 | ||
922 | if (!zpl_is_valid_projid(fsx.fsx_projid)) | |
923 | return (-EINVAL); | |
924 | ||
925 | err = __zpl_ioctl_setflags(ip, fsx.fsx_xflags, &xva); | |
926 | if (err) | |
927 | return (err); | |
928 | ||
929 | xoap = xva_getxoptattr(&xva); | |
930 | XVA_SET_REQ(&xva, XAT_PROJID); | |
931 | xoap->xoa_projid = fsx.fsx_projid; | |
932 | ||
933 | crhold(cr); | |
934 | cookie = spl_fstrans_mark(); | |
935 | err = -zfs_setattr(ip, (vattr_t *)&xva, 0, cr); | |
936 | spl_fstrans_unmark(cookie); | |
937 | crfree(cr); | |
938 | ||
939 | return (err); | |
9d317793 RY |
940 | } |
941 | ||
88c28395 BB |
942 | static long |
943 | zpl_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) | |
944 | { | |
945 | switch (cmd) { | |
9d317793 RY |
946 | case FS_IOC_GETFLAGS: |
947 | return (zpl_ioctl_getflags(filp, (void *)arg)); | |
948 | case FS_IOC_SETFLAGS: | |
949 | return (zpl_ioctl_setflags(filp, (void *)arg)); | |
9c5167d1 NF |
950 | case ZFS_IOC_FSGETXATTR: |
951 | return (zpl_ioctl_getxattr(filp, (void *)arg)); | |
952 | case ZFS_IOC_FSSETXATTR: | |
953 | return (zpl_ioctl_setxattr(filp, (void *)arg)); | |
88c28395 BB |
954 | default: |
955 | return (-ENOTTY); | |
956 | } | |
957 | } | |
958 | ||
959 | #ifdef CONFIG_COMPAT | |
960 | static long | |
961 | zpl_compat_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) | |
962 | { | |
f7b939bd CIK |
963 | switch (cmd) { |
964 | case FS_IOC32_GETFLAGS: | |
965 | cmd = FS_IOC_GETFLAGS; | |
966 | break; | |
967 | case FS_IOC32_SETFLAGS: | |
968 | cmd = FS_IOC_SETFLAGS; | |
969 | break; | |
970 | default: | |
971 | return (-ENOTTY); | |
972 | } | |
973 | return (zpl_ioctl(filp, cmd, (unsigned long)compat_ptr(arg))); | |
88c28395 BB |
974 | } |
975 | #endif /* CONFIG_COMPAT */ | |
976 | ||
977 | ||
1efb473f | 978 | const struct address_space_operations zpl_address_space_operations = { |
dde471ef | 979 | .readpages = zpl_readpages, |
1efb473f BB |
980 | .readpage = zpl_readpage, |
981 | .writepage = zpl_writepage, | |
d1d7e268 | 982 | .writepages = zpl_writepages, |
a584ef26 | 983 | .direct_IO = zpl_direct_IO, |
1efb473f BB |
984 | }; |
985 | ||
986 | const struct file_operations zpl_file_operations = { | |
126400a1 BB |
987 | .open = zpl_open, |
988 | .release = zpl_release, | |
802e7b5f | 989 | .llseek = zpl_llseek, |
57ae8400 | 990 | #ifdef HAVE_VFS_RW_ITERATE |
7a789346 CC |
991 | #ifdef HAVE_NEW_SYNC_READ |
992 | .read = new_sync_read, | |
993 | .write = new_sync_write, | |
994 | #endif | |
57ae8400 MK |
995 | .read_iter = zpl_iter_read, |
996 | .write_iter = zpl_iter_write, | |
997 | #else | |
7a789346 CC |
998 | .read = do_sync_read, |
999 | .write = do_sync_write, | |
cd3939c5 RY |
1000 | .aio_read = zpl_aio_read, |
1001 | .aio_write = zpl_aio_write, | |
57ae8400 | 1002 | #endif |
c0d35759 | 1003 | .mmap = zpl_mmap, |
1efb473f | 1004 | .fsync = zpl_fsync, |
7ca25051 | 1005 | #ifdef HAVE_FILE_AIO_FSYNC |
cd3939c5 | 1006 | .aio_fsync = zpl_aio_fsync, |
7ca25051 | 1007 | #endif |
cb2d1901 | 1008 | #ifdef HAVE_FILE_FALLOCATE |
d1d7e268 | 1009 | .fallocate = zpl_fallocate, |
cb2d1901 | 1010 | #endif /* HAVE_FILE_FALLOCATE */ |
d1d7e268 | 1011 | .unlocked_ioctl = zpl_ioctl, |
88c28395 | 1012 | #ifdef CONFIG_COMPAT |
d1d7e268 | 1013 | .compat_ioctl = zpl_compat_ioctl, |
88c28395 | 1014 | #endif |
1efb473f BB |
1015 | }; |
1016 | ||
1017 | const struct file_operations zpl_dir_file_operations = { | |
1018 | .llseek = generic_file_llseek, | |
1019 | .read = generic_read_dir, | |
9464b959 | 1020 | #if defined(HAVE_VFS_ITERATE_SHARED) |
9baaa7de CC |
1021 | .iterate_shared = zpl_iterate, |
1022 | #elif defined(HAVE_VFS_ITERATE) | |
0f37d0c8 RY |
1023 | .iterate = zpl_iterate, |
1024 | #else | |
1efb473f | 1025 | .readdir = zpl_readdir, |
0f37d0c8 | 1026 | #endif |
1efb473f | 1027 | .fsync = zpl_fsync, |
88c28395 BB |
1028 | .unlocked_ioctl = zpl_ioctl, |
1029 | #ifdef CONFIG_COMPAT | |
1030 | .compat_ioctl = zpl_compat_ioctl, | |
1031 | #endif | |
1efb473f | 1032 | }; |