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Commit | Line | Data |
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0a8165d7 | 1 | /* |
fbfa2cc5 JK |
2 | * fs/f2fs/file.c |
3 | * | |
4 | * Copyright (c) 2012 Samsung Electronics Co., Ltd. | |
5 | * http://www.samsung.com/ | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License version 2 as | |
9 | * published by the Free Software Foundation. | |
10 | */ | |
11 | #include <linux/fs.h> | |
12 | #include <linux/f2fs_fs.h> | |
13 | #include <linux/stat.h> | |
14 | #include <linux/buffer_head.h> | |
15 | #include <linux/writeback.h> | |
ae51fb31 | 16 | #include <linux/blkdev.h> |
fbfa2cc5 JK |
17 | #include <linux/falloc.h> |
18 | #include <linux/types.h> | |
e9750824 | 19 | #include <linux/compat.h> |
fbfa2cc5 JK |
20 | #include <linux/uaccess.h> |
21 | #include <linux/mount.h> | |
7f7670fe | 22 | #include <linux/pagevec.h> |
fbfa2cc5 JK |
23 | |
24 | #include "f2fs.h" | |
25 | #include "node.h" | |
26 | #include "segment.h" | |
27 | #include "xattr.h" | |
28 | #include "acl.h" | |
a2a4a7e4 | 29 | #include <trace/events/f2fs.h> |
fbfa2cc5 JK |
30 | |
31 | static int f2fs_vm_page_mkwrite(struct vm_area_struct *vma, | |
32 | struct vm_fault *vmf) | |
33 | { | |
34 | struct page *page = vmf->page; | |
6131ffaa | 35 | struct inode *inode = file_inode(vma->vm_file); |
4081363f | 36 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
fbfa2cc5 | 37 | struct dnode_of_data dn; |
e479556b | 38 | int err; |
fbfa2cc5 JK |
39 | |
40 | f2fs_balance_fs(sbi); | |
41 | ||
42 | sb_start_pagefault(inode->i_sb); | |
b3d208f9 JK |
43 | |
44 | f2fs_bug_on(sbi, f2fs_has_inline_data(inode)); | |
b067ba1f | 45 | |
fbfa2cc5 | 46 | /* block allocation */ |
e479556b | 47 | f2fs_lock_op(sbi); |
b3d208f9 | 48 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
b600965c | 49 | err = f2fs_reserve_block(&dn, page->index); |
9ba69cf9 JK |
50 | if (err) { |
51 | f2fs_unlock_op(sbi); | |
b600965c | 52 | goto out; |
9ba69cf9 JK |
53 | } |
54 | f2fs_put_dnode(&dn); | |
55 | f2fs_unlock_op(sbi); | |
fbfa2cc5 | 56 | |
9851e6e1 | 57 | file_update_time(vma->vm_file); |
fbfa2cc5 | 58 | lock_page(page); |
6bacf52f | 59 | if (unlikely(page->mapping != inode->i_mapping || |
9851e6e1 | 60 | page_offset(page) > i_size_read(inode) || |
6bacf52f | 61 | !PageUptodate(page))) { |
fbfa2cc5 JK |
62 | unlock_page(page); |
63 | err = -EFAULT; | |
64 | goto out; | |
65 | } | |
66 | ||
67 | /* | |
68 | * check to see if the page is mapped already (no holes) | |
69 | */ | |
70 | if (PageMappedToDisk(page)) | |
9851e6e1 | 71 | goto mapped; |
fbfa2cc5 JK |
72 | |
73 | /* page is wholly or partially inside EOF */ | |
74 | if (((page->index + 1) << PAGE_CACHE_SHIFT) > i_size_read(inode)) { | |
75 | unsigned offset; | |
76 | offset = i_size_read(inode) & ~PAGE_CACHE_MASK; | |
77 | zero_user_segment(page, offset, PAGE_CACHE_SIZE); | |
78 | } | |
79 | set_page_dirty(page); | |
80 | SetPageUptodate(page); | |
81 | ||
e943a10d | 82 | trace_f2fs_vm_page_mkwrite(page, DATA); |
9851e6e1 NJ |
83 | mapped: |
84 | /* fill the page */ | |
3cb5ad15 | 85 | f2fs_wait_on_page_writeback(page, DATA); |
fbfa2cc5 JK |
86 | out: |
87 | sb_end_pagefault(inode->i_sb); | |
88 | return block_page_mkwrite_return(err); | |
89 | } | |
90 | ||
91 | static const struct vm_operations_struct f2fs_file_vm_ops = { | |
692bb55d | 92 | .fault = filemap_fault, |
f1820361 | 93 | .map_pages = filemap_map_pages, |
692bb55d | 94 | .page_mkwrite = f2fs_vm_page_mkwrite, |
fbfa2cc5 JK |
95 | }; |
96 | ||
354a3399 JK |
97 | static int get_parent_ino(struct inode *inode, nid_t *pino) |
98 | { | |
99 | struct dentry *dentry; | |
100 | ||
101 | inode = igrab(inode); | |
102 | dentry = d_find_any_alias(inode); | |
103 | iput(inode); | |
104 | if (!dentry) | |
105 | return 0; | |
106 | ||
f0947e5c JK |
107 | if (update_dent_inode(inode, &dentry->d_name)) { |
108 | dput(dentry); | |
109 | return 0; | |
110 | } | |
354a3399 | 111 | |
f0947e5c JK |
112 | *pino = parent_ino(dentry); |
113 | dput(dentry); | |
354a3399 JK |
114 | return 1; |
115 | } | |
116 | ||
9d1589ef CY |
117 | static inline bool need_do_checkpoint(struct inode *inode) |
118 | { | |
4081363f | 119 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
9d1589ef CY |
120 | bool need_cp = false; |
121 | ||
122 | if (!S_ISREG(inode->i_mode) || inode->i_nlink != 1) | |
123 | need_cp = true; | |
124 | else if (file_wrong_pino(inode)) | |
125 | need_cp = true; | |
126 | else if (!space_for_roll_forward(sbi)) | |
127 | need_cp = true; | |
128 | else if (!is_checkpointed_node(sbi, F2FS_I(inode)->i_pino)) | |
129 | need_cp = true; | |
130 | else if (F2FS_I(inode)->xattr_ver == cur_cp_version(F2FS_CKPT(sbi))) | |
131 | need_cp = true; | |
d5053a34 JK |
132 | else if (test_opt(sbi, FASTBOOT)) |
133 | need_cp = true; | |
a344b9fd JK |
134 | else if (sbi->active_logs == 2) |
135 | need_cp = true; | |
9d1589ef CY |
136 | |
137 | return need_cp; | |
138 | } | |
139 | ||
9c7bb702 CL |
140 | static bool need_inode_page_update(struct f2fs_sb_info *sbi, nid_t ino) |
141 | { | |
142 | struct page *i = find_get_page(NODE_MAPPING(sbi), ino); | |
143 | bool ret = false; | |
144 | /* But we need to avoid that there are some inode updates */ | |
145 | if ((i && PageDirty(i)) || need_inode_block_update(sbi, ino)) | |
146 | ret = true; | |
147 | f2fs_put_page(i, 0); | |
148 | return ret; | |
149 | } | |
150 | ||
51455b19 CL |
151 | static void try_to_fix_pino(struct inode *inode) |
152 | { | |
153 | struct f2fs_inode_info *fi = F2FS_I(inode); | |
154 | nid_t pino; | |
155 | ||
156 | down_write(&fi->i_sem); | |
157 | fi->xattr_ver = 0; | |
158 | if (file_wrong_pino(inode) && inode->i_nlink == 1 && | |
159 | get_parent_ino(inode, &pino)) { | |
160 | fi->i_pino = pino; | |
161 | file_got_pino(inode); | |
162 | up_write(&fi->i_sem); | |
163 | ||
164 | mark_inode_dirty_sync(inode); | |
165 | f2fs_write_inode(inode, NULL); | |
166 | } else { | |
167 | up_write(&fi->i_sem); | |
168 | } | |
169 | } | |
170 | ||
fbfa2cc5 JK |
171 | int f2fs_sync_file(struct file *file, loff_t start, loff_t end, int datasync) |
172 | { | |
173 | struct inode *inode = file->f_mapping->host; | |
d928bfbf | 174 | struct f2fs_inode_info *fi = F2FS_I(inode); |
4081363f | 175 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
2403c155 | 176 | nid_t ino = inode->i_ino; |
fbfa2cc5 JK |
177 | int ret = 0; |
178 | bool need_cp = false; | |
179 | struct writeback_control wbc = { | |
c81bf1c8 | 180 | .sync_mode = WB_SYNC_ALL, |
fbfa2cc5 JK |
181 | .nr_to_write = LONG_MAX, |
182 | .for_reclaim = 0, | |
183 | }; | |
184 | ||
6bacf52f | 185 | if (unlikely(f2fs_readonly(inode->i_sb))) |
1fa95b0b NJ |
186 | return 0; |
187 | ||
a2a4a7e4 | 188 | trace_f2fs_sync_file_enter(inode); |
ea1aa12c JK |
189 | |
190 | /* if fdatasync is triggered, let's do in-place-update */ | |
c1ce1b02 | 191 | if (get_dirty_pages(inode) <= SM_I(sbi)->min_fsync_blocks) |
ea1aa12c | 192 | set_inode_flag(fi, FI_NEED_IPU); |
fbfa2cc5 | 193 | ret = filemap_write_and_wait_range(inode->i_mapping, start, end); |
c1ce1b02 JK |
194 | clear_inode_flag(fi, FI_NEED_IPU); |
195 | ||
a2a4a7e4 NJ |
196 | if (ret) { |
197 | trace_f2fs_sync_file_exit(inode, need_cp, datasync, ret); | |
fbfa2cc5 | 198 | return ret; |
a2a4a7e4 | 199 | } |
fbfa2cc5 | 200 | |
9c7bb702 CL |
201 | /* if the inode is dirty, let's recover all the time */ |
202 | if (!datasync && is_inode_flag_set(fi, FI_DIRTY_INODE)) { | |
203 | update_inode_page(inode); | |
204 | goto go_write; | |
205 | } | |
206 | ||
6d99ba41 JK |
207 | /* |
208 | * if there is no written data, don't waste time to write recovery info. | |
209 | */ | |
210 | if (!is_inode_flag_set(fi, FI_APPEND_WRITE) && | |
2403c155 | 211 | !exist_written_data(sbi, ino, APPEND_INO)) { |
19c9c466 | 212 | |
9c7bb702 CL |
213 | /* it may call write_inode just prior to fsync */ |
214 | if (need_inode_page_update(sbi, ino)) | |
19c9c466 | 215 | goto go_write; |
19c9c466 | 216 | |
6d99ba41 | 217 | if (is_inode_flag_set(fi, FI_UPDATE_WRITE) || |
2403c155 | 218 | exist_written_data(sbi, ino, UPDATE_INO)) |
6d99ba41 JK |
219 | goto flush_out; |
220 | goto out; | |
221 | } | |
19c9c466 | 222 | go_write: |
7d82db83 JK |
223 | /* guarantee free sections for fsync */ |
224 | f2fs_balance_fs(sbi); | |
225 | ||
e5d2385e JK |
226 | /* |
227 | * Both of fdatasync() and fsync() are able to be recovered from | |
228 | * sudden-power-off. | |
229 | */ | |
9d1589ef CY |
230 | down_read(&fi->i_sem); |
231 | need_cp = need_do_checkpoint(inode); | |
d928bfbf JK |
232 | up_read(&fi->i_sem); |
233 | ||
fbfa2cc5 JK |
234 | if (need_cp) { |
235 | /* all the dirty node pages should be flushed for POR */ | |
236 | ret = f2fs_sync_fs(inode->i_sb, 1); | |
d928bfbf | 237 | |
51455b19 CL |
238 | /* |
239 | * We've secured consistency through sync_fs. Following pino | |
240 | * will be used only for fsynced inodes after checkpoint. | |
241 | */ | |
242 | try_to_fix_pino(inode); | |
243 | goto out; | |
244 | } | |
88bd02c9 | 245 | sync_nodes: |
51455b19 CL |
246 | sync_node_pages(sbi, ino, &wbc); |
247 | ||
248 | if (need_inode_block_update(sbi, ino)) { | |
249 | mark_inode_dirty_sync(inode); | |
250 | f2fs_write_inode(inode, NULL); | |
251 | goto sync_nodes; | |
fbfa2cc5 | 252 | } |
51455b19 CL |
253 | |
254 | ret = wait_on_node_pages_writeback(sbi, ino); | |
255 | if (ret) | |
256 | goto out; | |
257 | ||
258 | /* once recovery info is written, don't need to tack this */ | |
259 | remove_dirty_inode(sbi, ino, APPEND_INO); | |
260 | clear_inode_flag(fi, FI_APPEND_WRITE); | |
261 | flush_out: | |
262 | remove_dirty_inode(sbi, ino, UPDATE_INO); | |
263 | clear_inode_flag(fi, FI_UPDATE_WRITE); | |
264 | ret = f2fs_issue_flush(sbi); | |
fbfa2cc5 | 265 | out: |
a2a4a7e4 | 266 | trace_f2fs_sync_file_exit(inode, need_cp, datasync, ret); |
fbfa2cc5 JK |
267 | return ret; |
268 | } | |
269 | ||
7f7670fe JK |
270 | static pgoff_t __get_first_dirty_index(struct address_space *mapping, |
271 | pgoff_t pgofs, int whence) | |
272 | { | |
273 | struct pagevec pvec; | |
274 | int nr_pages; | |
275 | ||
276 | if (whence != SEEK_DATA) | |
277 | return 0; | |
278 | ||
279 | /* find first dirty page index */ | |
280 | pagevec_init(&pvec, 0); | |
65b85ccc JK |
281 | nr_pages = pagevec_lookup_tag(&pvec, mapping, &pgofs, |
282 | PAGECACHE_TAG_DIRTY, 1); | |
283 | pgofs = nr_pages ? pvec.pages[0]->index : LONG_MAX; | |
7f7670fe JK |
284 | pagevec_release(&pvec); |
285 | return pgofs; | |
286 | } | |
287 | ||
288 | static bool __found_offset(block_t blkaddr, pgoff_t dirty, pgoff_t pgofs, | |
289 | int whence) | |
290 | { | |
291 | switch (whence) { | |
292 | case SEEK_DATA: | |
293 | if ((blkaddr == NEW_ADDR && dirty == pgofs) || | |
294 | (blkaddr != NEW_ADDR && blkaddr != NULL_ADDR)) | |
295 | return true; | |
296 | break; | |
297 | case SEEK_HOLE: | |
298 | if (blkaddr == NULL_ADDR) | |
299 | return true; | |
300 | break; | |
301 | } | |
302 | return false; | |
303 | } | |
304 | ||
267378d4 CY |
305 | static loff_t f2fs_seek_block(struct file *file, loff_t offset, int whence) |
306 | { | |
307 | struct inode *inode = file->f_mapping->host; | |
308 | loff_t maxbytes = inode->i_sb->s_maxbytes; | |
309 | struct dnode_of_data dn; | |
7f7670fe JK |
310 | pgoff_t pgofs, end_offset, dirty; |
311 | loff_t data_ofs = offset; | |
312 | loff_t isize; | |
267378d4 CY |
313 | int err = 0; |
314 | ||
315 | mutex_lock(&inode->i_mutex); | |
316 | ||
317 | isize = i_size_read(inode); | |
318 | if (offset >= isize) | |
319 | goto fail; | |
320 | ||
321 | /* handle inline data case */ | |
622f28ae | 322 | if (f2fs_has_inline_data(inode) || f2fs_has_inline_dentry(inode)) { |
267378d4 CY |
323 | if (whence == SEEK_HOLE) |
324 | data_ofs = isize; | |
325 | goto found; | |
326 | } | |
327 | ||
328 | pgofs = (pgoff_t)(offset >> PAGE_CACHE_SHIFT); | |
329 | ||
7f7670fe JK |
330 | dirty = __get_first_dirty_index(inode->i_mapping, pgofs, whence); |
331 | ||
267378d4 CY |
332 | for (; data_ofs < isize; data_ofs = pgofs << PAGE_CACHE_SHIFT) { |
333 | set_new_dnode(&dn, inode, NULL, NULL, 0); | |
334 | err = get_dnode_of_data(&dn, pgofs, LOOKUP_NODE_RA); | |
335 | if (err && err != -ENOENT) { | |
336 | goto fail; | |
337 | } else if (err == -ENOENT) { | |
e1c42045 | 338 | /* direct node does not exists */ |
267378d4 CY |
339 | if (whence == SEEK_DATA) { |
340 | pgofs = PGOFS_OF_NEXT_DNODE(pgofs, | |
341 | F2FS_I(inode)); | |
342 | continue; | |
343 | } else { | |
344 | goto found; | |
345 | } | |
346 | } | |
347 | ||
6b2920a5 | 348 | end_offset = ADDRS_PER_PAGE(dn.node_page, F2FS_I(inode)); |
267378d4 CY |
349 | |
350 | /* find data/hole in dnode block */ | |
351 | for (; dn.ofs_in_node < end_offset; | |
352 | dn.ofs_in_node++, pgofs++, | |
353 | data_ofs = pgofs << PAGE_CACHE_SHIFT) { | |
354 | block_t blkaddr; | |
355 | blkaddr = datablock_addr(dn.node_page, dn.ofs_in_node); | |
356 | ||
7f7670fe | 357 | if (__found_offset(blkaddr, dirty, pgofs, whence)) { |
267378d4 CY |
358 | f2fs_put_dnode(&dn); |
359 | goto found; | |
360 | } | |
361 | } | |
362 | f2fs_put_dnode(&dn); | |
363 | } | |
364 | ||
365 | if (whence == SEEK_DATA) | |
366 | goto fail; | |
267378d4 | 367 | found: |
fe369bc8 JK |
368 | if (whence == SEEK_HOLE && data_ofs > isize) |
369 | data_ofs = isize; | |
267378d4 CY |
370 | mutex_unlock(&inode->i_mutex); |
371 | return vfs_setpos(file, data_ofs, maxbytes); | |
372 | fail: | |
373 | mutex_unlock(&inode->i_mutex); | |
374 | return -ENXIO; | |
375 | } | |
376 | ||
377 | static loff_t f2fs_llseek(struct file *file, loff_t offset, int whence) | |
378 | { | |
379 | struct inode *inode = file->f_mapping->host; | |
380 | loff_t maxbytes = inode->i_sb->s_maxbytes; | |
381 | ||
382 | switch (whence) { | |
383 | case SEEK_SET: | |
384 | case SEEK_CUR: | |
385 | case SEEK_END: | |
386 | return generic_file_llseek_size(file, offset, whence, | |
387 | maxbytes, i_size_read(inode)); | |
388 | case SEEK_DATA: | |
389 | case SEEK_HOLE: | |
0b4c5afd JK |
390 | if (offset < 0) |
391 | return -ENXIO; | |
267378d4 CY |
392 | return f2fs_seek_block(file, offset, whence); |
393 | } | |
394 | ||
395 | return -EINVAL; | |
396 | } | |
397 | ||
fbfa2cc5 JK |
398 | static int f2fs_file_mmap(struct file *file, struct vm_area_struct *vma) |
399 | { | |
b3d208f9 JK |
400 | struct inode *inode = file_inode(file); |
401 | ||
402 | /* we don't need to use inline_data strictly */ | |
403 | if (f2fs_has_inline_data(inode)) { | |
404 | int err = f2fs_convert_inline_inode(inode); | |
405 | if (err) | |
406 | return err; | |
407 | } | |
408 | ||
fbfa2cc5 JK |
409 | file_accessed(file); |
410 | vma->vm_ops = &f2fs_file_vm_ops; | |
411 | return 0; | |
412 | } | |
413 | ||
b292dcab | 414 | int truncate_data_blocks_range(struct dnode_of_data *dn, int count) |
fbfa2cc5 JK |
415 | { |
416 | int nr_free = 0, ofs = dn->ofs_in_node; | |
4081363f | 417 | struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); |
fbfa2cc5 JK |
418 | struct f2fs_node *raw_node; |
419 | __le32 *addr; | |
420 | ||
45590710 | 421 | raw_node = F2FS_NODE(dn->node_page); |
fbfa2cc5 JK |
422 | addr = blkaddr_in_node(raw_node) + ofs; |
423 | ||
6c311ec6 | 424 | for (; count > 0; count--, addr++, dn->ofs_in_node++) { |
fbfa2cc5 JK |
425 | block_t blkaddr = le32_to_cpu(*addr); |
426 | if (blkaddr == NULL_ADDR) | |
427 | continue; | |
428 | ||
429 | update_extent_cache(NULL_ADDR, dn); | |
430 | invalidate_blocks(sbi, blkaddr); | |
fbfa2cc5 JK |
431 | nr_free++; |
432 | } | |
433 | if (nr_free) { | |
d7cc950b | 434 | dec_valid_block_count(sbi, dn->inode, nr_free); |
fbfa2cc5 JK |
435 | set_page_dirty(dn->node_page); |
436 | sync_inode_page(dn); | |
437 | } | |
438 | dn->ofs_in_node = ofs; | |
51dd6249 NJ |
439 | |
440 | trace_f2fs_truncate_data_blocks_range(dn->inode, dn->nid, | |
441 | dn->ofs_in_node, nr_free); | |
fbfa2cc5 JK |
442 | return nr_free; |
443 | } | |
444 | ||
445 | void truncate_data_blocks(struct dnode_of_data *dn) | |
446 | { | |
447 | truncate_data_blocks_range(dn, ADDRS_PER_BLOCK); | |
448 | } | |
449 | ||
b3d208f9 | 450 | static int truncate_partial_data_page(struct inode *inode, u64 from) |
fbfa2cc5 JK |
451 | { |
452 | unsigned offset = from & (PAGE_CACHE_SIZE - 1); | |
453 | struct page *page; | |
454 | ||
455 | if (!offset) | |
b3d208f9 | 456 | return 0; |
fbfa2cc5 | 457 | |
c718379b | 458 | page = find_data_page(inode, from >> PAGE_CACHE_SHIFT, false); |
fbfa2cc5 | 459 | if (IS_ERR(page)) |
b3d208f9 | 460 | return 0; |
fbfa2cc5 JK |
461 | |
462 | lock_page(page); | |
ca0a81b3 CY |
463 | if (unlikely(!PageUptodate(page) || |
464 | page->mapping != inode->i_mapping)) | |
465 | goto out; | |
466 | ||
3cb5ad15 | 467 | f2fs_wait_on_page_writeback(page, DATA); |
fbfa2cc5 JK |
468 | zero_user(page, offset, PAGE_CACHE_SIZE - offset); |
469 | set_page_dirty(page); | |
ca0a81b3 | 470 | out: |
fbfa2cc5 | 471 | f2fs_put_page(page, 1); |
b3d208f9 | 472 | return 0; |
fbfa2cc5 JK |
473 | } |
474 | ||
764aa3e9 | 475 | int truncate_blocks(struct inode *inode, u64 from, bool lock) |
fbfa2cc5 | 476 | { |
4081363f | 477 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
fbfa2cc5 JK |
478 | unsigned int blocksize = inode->i_sb->s_blocksize; |
479 | struct dnode_of_data dn; | |
480 | pgoff_t free_from; | |
9ffe0fb5 | 481 | int count = 0, err = 0; |
b3d208f9 | 482 | struct page *ipage; |
fbfa2cc5 | 483 | |
51dd6249 NJ |
484 | trace_f2fs_truncate_blocks_enter(inode, from); |
485 | ||
fbfa2cc5 | 486 | free_from = (pgoff_t) |
b3d208f9 | 487 | ((from + blocksize - 1) >> (sbi->log_blocksize)); |
fbfa2cc5 | 488 | |
764aa3e9 JK |
489 | if (lock) |
490 | f2fs_lock_op(sbi); | |
9ffe0fb5 | 491 | |
b3d208f9 JK |
492 | ipage = get_node_page(sbi, inode->i_ino); |
493 | if (IS_ERR(ipage)) { | |
494 | err = PTR_ERR(ipage); | |
495 | goto out; | |
496 | } | |
497 | ||
498 | if (f2fs_has_inline_data(inode)) { | |
b3d208f9 JK |
499 | f2fs_put_page(ipage, 1); |
500 | goto out; | |
501 | } | |
502 | ||
503 | set_new_dnode(&dn, inode, ipage, NULL, 0); | |
266e97a8 | 504 | err = get_dnode_of_data(&dn, free_from, LOOKUP_NODE); |
fbfa2cc5 JK |
505 | if (err) { |
506 | if (err == -ENOENT) | |
507 | goto free_next; | |
b3d208f9 | 508 | goto out; |
1ce86bf6 JK |
509 | } |
510 | ||
6403eb1f | 511 | count = ADDRS_PER_PAGE(dn.node_page, F2FS_I(inode)); |
fbfa2cc5 JK |
512 | |
513 | count -= dn.ofs_in_node; | |
9850cf4a | 514 | f2fs_bug_on(sbi, count < 0); |
39936837 | 515 | |
fbfa2cc5 JK |
516 | if (dn.ofs_in_node || IS_INODE(dn.node_page)) { |
517 | truncate_data_blocks_range(&dn, count); | |
518 | free_from += count; | |
519 | } | |
520 | ||
521 | f2fs_put_dnode(&dn); | |
522 | free_next: | |
523 | err = truncate_inode_blocks(inode, free_from); | |
764d2c80 JK |
524 | out: |
525 | if (lock) | |
526 | f2fs_unlock_op(sbi); | |
b3d208f9 JK |
527 | |
528 | /* lastly zero out the first data page */ | |
529 | if (!err) | |
530 | err = truncate_partial_data_page(inode, from); | |
fbfa2cc5 | 531 | |
51dd6249 | 532 | trace_f2fs_truncate_blocks_exit(inode, err); |
fbfa2cc5 JK |
533 | return err; |
534 | } | |
535 | ||
536 | void f2fs_truncate(struct inode *inode) | |
537 | { | |
538 | if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) || | |
539 | S_ISLNK(inode->i_mode))) | |
540 | return; | |
541 | ||
51dd6249 NJ |
542 | trace_f2fs_truncate(inode); |
543 | ||
92dffd01 JK |
544 | /* we should check inline_data size */ |
545 | if (f2fs_has_inline_data(inode) && !f2fs_may_inline(inode)) { | |
546 | if (f2fs_convert_inline_inode(inode)) | |
547 | return; | |
548 | } | |
549 | ||
764aa3e9 | 550 | if (!truncate_blocks(inode, i_size_read(inode), true)) { |
fbfa2cc5 JK |
551 | inode->i_mtime = inode->i_ctime = CURRENT_TIME; |
552 | mark_inode_dirty(inode); | |
553 | } | |
fbfa2cc5 JK |
554 | } |
555 | ||
2d4d9fb5 | 556 | int f2fs_getattr(struct vfsmount *mnt, |
fbfa2cc5 JK |
557 | struct dentry *dentry, struct kstat *stat) |
558 | { | |
559 | struct inode *inode = dentry->d_inode; | |
560 | generic_fillattr(inode, stat); | |
561 | stat->blocks <<= 3; | |
562 | return 0; | |
563 | } | |
564 | ||
565 | #ifdef CONFIG_F2FS_FS_POSIX_ACL | |
566 | static void __setattr_copy(struct inode *inode, const struct iattr *attr) | |
567 | { | |
568 | struct f2fs_inode_info *fi = F2FS_I(inode); | |
569 | unsigned int ia_valid = attr->ia_valid; | |
570 | ||
571 | if (ia_valid & ATTR_UID) | |
572 | inode->i_uid = attr->ia_uid; | |
573 | if (ia_valid & ATTR_GID) | |
574 | inode->i_gid = attr->ia_gid; | |
575 | if (ia_valid & ATTR_ATIME) | |
576 | inode->i_atime = timespec_trunc(attr->ia_atime, | |
577 | inode->i_sb->s_time_gran); | |
578 | if (ia_valid & ATTR_MTIME) | |
579 | inode->i_mtime = timespec_trunc(attr->ia_mtime, | |
580 | inode->i_sb->s_time_gran); | |
581 | if (ia_valid & ATTR_CTIME) | |
582 | inode->i_ctime = timespec_trunc(attr->ia_ctime, | |
583 | inode->i_sb->s_time_gran); | |
584 | if (ia_valid & ATTR_MODE) { | |
585 | umode_t mode = attr->ia_mode; | |
586 | ||
587 | if (!in_group_p(inode->i_gid) && !capable(CAP_FSETID)) | |
588 | mode &= ~S_ISGID; | |
589 | set_acl_inode(fi, mode); | |
590 | } | |
591 | } | |
592 | #else | |
593 | #define __setattr_copy setattr_copy | |
594 | #endif | |
595 | ||
596 | int f2fs_setattr(struct dentry *dentry, struct iattr *attr) | |
597 | { | |
598 | struct inode *inode = dentry->d_inode; | |
599 | struct f2fs_inode_info *fi = F2FS_I(inode); | |
600 | int err; | |
601 | ||
602 | err = inode_change_ok(inode, attr); | |
603 | if (err) | |
604 | return err; | |
605 | ||
09db6a2e | 606 | if (attr->ia_valid & ATTR_SIZE) { |
09db6a2e CY |
607 | if (attr->ia_size != i_size_read(inode)) { |
608 | truncate_setsize(inode, attr->ia_size); | |
609 | f2fs_truncate(inode); | |
610 | f2fs_balance_fs(F2FS_I_SB(inode)); | |
611 | } else { | |
612 | /* | |
613 | * giving a chance to truncate blocks past EOF which | |
614 | * are fallocated with FALLOC_FL_KEEP_SIZE. | |
615 | */ | |
616 | f2fs_truncate(inode); | |
617 | } | |
fbfa2cc5 JK |
618 | } |
619 | ||
620 | __setattr_copy(inode, attr); | |
621 | ||
622 | if (attr->ia_valid & ATTR_MODE) { | |
a6dda0e6 | 623 | err = posix_acl_chmod(inode, get_inode_mode(inode)); |
fbfa2cc5 JK |
624 | if (err || is_inode_flag_set(fi, FI_ACL_MODE)) { |
625 | inode->i_mode = fi->i_acl_mode; | |
626 | clear_inode_flag(fi, FI_ACL_MODE); | |
627 | } | |
628 | } | |
629 | ||
630 | mark_inode_dirty(inode); | |
631 | return err; | |
632 | } | |
633 | ||
634 | const struct inode_operations f2fs_file_inode_operations = { | |
635 | .getattr = f2fs_getattr, | |
636 | .setattr = f2fs_setattr, | |
637 | .get_acl = f2fs_get_acl, | |
a6dda0e6 | 638 | .set_acl = f2fs_set_acl, |
fbfa2cc5 JK |
639 | #ifdef CONFIG_F2FS_FS_XATTR |
640 | .setxattr = generic_setxattr, | |
641 | .getxattr = generic_getxattr, | |
642 | .listxattr = f2fs_listxattr, | |
643 | .removexattr = generic_removexattr, | |
644 | #endif | |
9ab70134 | 645 | .fiemap = f2fs_fiemap, |
fbfa2cc5 JK |
646 | }; |
647 | ||
648 | static void fill_zero(struct inode *inode, pgoff_t index, | |
649 | loff_t start, loff_t len) | |
650 | { | |
4081363f | 651 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
fbfa2cc5 JK |
652 | struct page *page; |
653 | ||
654 | if (!len) | |
655 | return; | |
656 | ||
bd43df02 JK |
657 | f2fs_balance_fs(sbi); |
658 | ||
e479556b | 659 | f2fs_lock_op(sbi); |
64aa7ed9 | 660 | page = get_new_data_page(inode, NULL, index, false); |
e479556b | 661 | f2fs_unlock_op(sbi); |
fbfa2cc5 JK |
662 | |
663 | if (!IS_ERR(page)) { | |
3cb5ad15 | 664 | f2fs_wait_on_page_writeback(page, DATA); |
fbfa2cc5 JK |
665 | zero_user(page, start, len); |
666 | set_page_dirty(page); | |
667 | f2fs_put_page(page, 1); | |
668 | } | |
669 | } | |
670 | ||
671 | int truncate_hole(struct inode *inode, pgoff_t pg_start, pgoff_t pg_end) | |
672 | { | |
673 | pgoff_t index; | |
674 | int err; | |
675 | ||
676 | for (index = pg_start; index < pg_end; index++) { | |
677 | struct dnode_of_data dn; | |
9eaeba70 | 678 | |
fbfa2cc5 | 679 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
266e97a8 | 680 | err = get_dnode_of_data(&dn, index, LOOKUP_NODE); |
fbfa2cc5 | 681 | if (err) { |
fbfa2cc5 JK |
682 | if (err == -ENOENT) |
683 | continue; | |
684 | return err; | |
685 | } | |
686 | ||
687 | if (dn.data_blkaddr != NULL_ADDR) | |
688 | truncate_data_blocks_range(&dn, 1); | |
689 | f2fs_put_dnode(&dn); | |
fbfa2cc5 JK |
690 | } |
691 | return 0; | |
692 | } | |
693 | ||
a66c7b2f | 694 | static int punch_hole(struct inode *inode, loff_t offset, loff_t len) |
fbfa2cc5 JK |
695 | { |
696 | pgoff_t pg_start, pg_end; | |
697 | loff_t off_start, off_end; | |
698 | int ret = 0; | |
699 | ||
14cecc5c CY |
700 | if (!S_ISREG(inode->i_mode)) |
701 | return -EOPNOTSUPP; | |
702 | ||
703 | /* skip punching hole beyond i_size */ | |
704 | if (offset >= inode->i_size) | |
705 | return ret; | |
706 | ||
b3d208f9 JK |
707 | if (f2fs_has_inline_data(inode)) { |
708 | ret = f2fs_convert_inline_inode(inode); | |
709 | if (ret) | |
710 | return ret; | |
711 | } | |
9ffe0fb5 | 712 | |
fbfa2cc5 JK |
713 | pg_start = ((unsigned long long) offset) >> PAGE_CACHE_SHIFT; |
714 | pg_end = ((unsigned long long) offset + len) >> PAGE_CACHE_SHIFT; | |
715 | ||
716 | off_start = offset & (PAGE_CACHE_SIZE - 1); | |
717 | off_end = (offset + len) & (PAGE_CACHE_SIZE - 1); | |
718 | ||
719 | if (pg_start == pg_end) { | |
720 | fill_zero(inode, pg_start, off_start, | |
721 | off_end - off_start); | |
722 | } else { | |
723 | if (off_start) | |
724 | fill_zero(inode, pg_start++, off_start, | |
725 | PAGE_CACHE_SIZE - off_start); | |
726 | if (off_end) | |
727 | fill_zero(inode, pg_end, 0, off_end); | |
728 | ||
729 | if (pg_start < pg_end) { | |
730 | struct address_space *mapping = inode->i_mapping; | |
731 | loff_t blk_start, blk_end; | |
4081363f | 732 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
1127a3d4 JH |
733 | |
734 | f2fs_balance_fs(sbi); | |
fbfa2cc5 JK |
735 | |
736 | blk_start = pg_start << PAGE_CACHE_SHIFT; | |
737 | blk_end = pg_end << PAGE_CACHE_SHIFT; | |
738 | truncate_inode_pages_range(mapping, blk_start, | |
739 | blk_end - 1); | |
39936837 | 740 | |
e479556b | 741 | f2fs_lock_op(sbi); |
fbfa2cc5 | 742 | ret = truncate_hole(inode, pg_start, pg_end); |
e479556b | 743 | f2fs_unlock_op(sbi); |
fbfa2cc5 JK |
744 | } |
745 | } | |
746 | ||
fbfa2cc5 JK |
747 | return ret; |
748 | } | |
749 | ||
750 | static int expand_inode_data(struct inode *inode, loff_t offset, | |
751 | loff_t len, int mode) | |
752 | { | |
4081363f | 753 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
fbfa2cc5 JK |
754 | pgoff_t index, pg_start, pg_end; |
755 | loff_t new_size = i_size_read(inode); | |
756 | loff_t off_start, off_end; | |
757 | int ret = 0; | |
758 | ||
497a0930 CY |
759 | f2fs_balance_fs(sbi); |
760 | ||
fbfa2cc5 JK |
761 | ret = inode_newsize_ok(inode, (len + offset)); |
762 | if (ret) | |
763 | return ret; | |
764 | ||
b3d208f9 JK |
765 | if (f2fs_has_inline_data(inode)) { |
766 | ret = f2fs_convert_inline_inode(inode); | |
767 | if (ret) | |
768 | return ret; | |
769 | } | |
9e09fc85 | 770 | |
fbfa2cc5 JK |
771 | pg_start = ((unsigned long long) offset) >> PAGE_CACHE_SHIFT; |
772 | pg_end = ((unsigned long long) offset + len) >> PAGE_CACHE_SHIFT; | |
773 | ||
774 | off_start = offset & (PAGE_CACHE_SIZE - 1); | |
775 | off_end = (offset + len) & (PAGE_CACHE_SIZE - 1); | |
776 | ||
ead43275 JK |
777 | f2fs_lock_op(sbi); |
778 | ||
fbfa2cc5 JK |
779 | for (index = pg_start; index <= pg_end; index++) { |
780 | struct dnode_of_data dn; | |
781 | ||
98397ff3 JK |
782 | if (index == pg_end && !off_end) |
783 | goto noalloc; | |
784 | ||
fbfa2cc5 | 785 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
b600965c | 786 | ret = f2fs_reserve_block(&dn, index); |
b600965c | 787 | if (ret) |
fbfa2cc5 | 788 | break; |
98397ff3 | 789 | noalloc: |
fbfa2cc5 JK |
790 | if (pg_start == pg_end) |
791 | new_size = offset + len; | |
792 | else if (index == pg_start && off_start) | |
793 | new_size = (index + 1) << PAGE_CACHE_SHIFT; | |
794 | else if (index == pg_end) | |
795 | new_size = (index << PAGE_CACHE_SHIFT) + off_end; | |
796 | else | |
797 | new_size += PAGE_CACHE_SIZE; | |
798 | } | |
799 | ||
800 | if (!(mode & FALLOC_FL_KEEP_SIZE) && | |
801 | i_size_read(inode) < new_size) { | |
802 | i_size_write(inode, new_size); | |
803 | mark_inode_dirty(inode); | |
ead43275 | 804 | update_inode_page(inode); |
fbfa2cc5 | 805 | } |
ead43275 | 806 | f2fs_unlock_op(sbi); |
fbfa2cc5 JK |
807 | |
808 | return ret; | |
809 | } | |
810 | ||
811 | static long f2fs_fallocate(struct file *file, int mode, | |
812 | loff_t offset, loff_t len) | |
813 | { | |
6131ffaa | 814 | struct inode *inode = file_inode(file); |
fbfa2cc5 JK |
815 | long ret; |
816 | ||
817 | if (mode & ~(FALLOC_FL_KEEP_SIZE | FALLOC_FL_PUNCH_HOLE)) | |
818 | return -EOPNOTSUPP; | |
819 | ||
3375f696 CY |
820 | mutex_lock(&inode->i_mutex); |
821 | ||
fbfa2cc5 | 822 | if (mode & FALLOC_FL_PUNCH_HOLE) |
a66c7b2f | 823 | ret = punch_hole(inode, offset, len); |
fbfa2cc5 JK |
824 | else |
825 | ret = expand_inode_data(inode, offset, len, mode); | |
826 | ||
3af60a49 NJ |
827 | if (!ret) { |
828 | inode->i_mtime = inode->i_ctime = CURRENT_TIME; | |
829 | mark_inode_dirty(inode); | |
830 | } | |
3375f696 CY |
831 | |
832 | mutex_unlock(&inode->i_mutex); | |
833 | ||
c01e2853 | 834 | trace_f2fs_fallocate(inode, mode, offset, len, ret); |
fbfa2cc5 JK |
835 | return ret; |
836 | } | |
837 | ||
838 | #define F2FS_REG_FLMASK (~(FS_DIRSYNC_FL | FS_TOPDIR_FL)) | |
839 | #define F2FS_OTHER_FLMASK (FS_NODUMP_FL | FS_NOATIME_FL) | |
840 | ||
841 | static inline __u32 f2fs_mask_flags(umode_t mode, __u32 flags) | |
842 | { | |
843 | if (S_ISDIR(mode)) | |
844 | return flags; | |
845 | else if (S_ISREG(mode)) | |
846 | return flags & F2FS_REG_FLMASK; | |
847 | else | |
848 | return flags & F2FS_OTHER_FLMASK; | |
849 | } | |
850 | ||
52656e6c | 851 | static int f2fs_ioc_getflags(struct file *filp, unsigned long arg) |
fbfa2cc5 | 852 | { |
6131ffaa | 853 | struct inode *inode = file_inode(filp); |
fbfa2cc5 | 854 | struct f2fs_inode_info *fi = F2FS_I(inode); |
52656e6c JK |
855 | unsigned int flags = fi->i_flags & FS_FL_USER_VISIBLE; |
856 | return put_user(flags, (int __user *)arg); | |
857 | } | |
fbfa2cc5 | 858 | |
52656e6c JK |
859 | static int f2fs_ioc_setflags(struct file *filp, unsigned long arg) |
860 | { | |
861 | struct inode *inode = file_inode(filp); | |
862 | struct f2fs_inode_info *fi = F2FS_I(inode); | |
863 | unsigned int flags = fi->i_flags & FS_FL_USER_VISIBLE; | |
864 | unsigned int oldflags; | |
865 | int ret; | |
fbfa2cc5 | 866 | |
52656e6c JK |
867 | ret = mnt_want_write_file(filp); |
868 | if (ret) | |
869 | return ret; | |
fbfa2cc5 | 870 | |
52656e6c JK |
871 | if (!inode_owner_or_capable(inode)) { |
872 | ret = -EACCES; | |
873 | goto out; | |
874 | } | |
fbfa2cc5 | 875 | |
52656e6c JK |
876 | if (get_user(flags, (int __user *)arg)) { |
877 | ret = -EFAULT; | |
878 | goto out; | |
879 | } | |
fbfa2cc5 | 880 | |
52656e6c | 881 | flags = f2fs_mask_flags(inode->i_mode, flags); |
fbfa2cc5 | 882 | |
52656e6c | 883 | mutex_lock(&inode->i_mutex); |
fbfa2cc5 | 884 | |
52656e6c | 885 | oldflags = fi->i_flags; |
fbfa2cc5 | 886 | |
52656e6c JK |
887 | if ((flags ^ oldflags) & (FS_APPEND_FL | FS_IMMUTABLE_FL)) { |
888 | if (!capable(CAP_LINUX_IMMUTABLE)) { | |
889 | mutex_unlock(&inode->i_mutex); | |
890 | ret = -EPERM; | |
891 | goto out; | |
fbfa2cc5 | 892 | } |
52656e6c | 893 | } |
fbfa2cc5 | 894 | |
52656e6c JK |
895 | flags = flags & FS_FL_USER_MODIFIABLE; |
896 | flags |= oldflags & ~FS_FL_USER_MODIFIABLE; | |
897 | fi->i_flags = flags; | |
898 | mutex_unlock(&inode->i_mutex); | |
fbfa2cc5 | 899 | |
52656e6c JK |
900 | f2fs_set_inode_flags(inode); |
901 | inode->i_ctime = CURRENT_TIME; | |
902 | mark_inode_dirty(inode); | |
fbfa2cc5 | 903 | out: |
52656e6c JK |
904 | mnt_drop_write_file(filp); |
905 | return ret; | |
906 | } | |
4b2fecc8 | 907 | |
88b88a66 JK |
908 | static int f2fs_ioc_start_atomic_write(struct file *filp) |
909 | { | |
910 | struct inode *inode = file_inode(filp); | |
911 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
912 | ||
913 | if (!inode_owner_or_capable(inode)) | |
914 | return -EACCES; | |
915 | ||
916 | f2fs_balance_fs(sbi); | |
917 | ||
918 | set_inode_flag(F2FS_I(inode), FI_ATOMIC_FILE); | |
919 | ||
b3d208f9 | 920 | return f2fs_convert_inline_inode(inode); |
88b88a66 JK |
921 | } |
922 | ||
12662234 JK |
923 | static int f2fs_release_file(struct inode *inode, struct file *filp) |
924 | { | |
925 | /* some remained atomic pages should discarded */ | |
926 | if (f2fs_is_atomic_file(inode) || f2fs_is_volatile_file(inode)) | |
927 | commit_inmem_pages(inode, true); | |
928 | return 0; | |
929 | } | |
930 | ||
88b88a66 JK |
931 | static int f2fs_ioc_commit_atomic_write(struct file *filp) |
932 | { | |
933 | struct inode *inode = file_inode(filp); | |
934 | int ret; | |
935 | ||
936 | if (!inode_owner_or_capable(inode)) | |
937 | return -EACCES; | |
938 | ||
02a1335f JK |
939 | if (f2fs_is_volatile_file(inode)) |
940 | return 0; | |
941 | ||
88b88a66 JK |
942 | ret = mnt_want_write_file(filp); |
943 | if (ret) | |
944 | return ret; | |
945 | ||
946 | if (f2fs_is_atomic_file(inode)) | |
947 | commit_inmem_pages(inode, false); | |
948 | ||
949 | ret = f2fs_sync_file(filp, 0, LONG_MAX, 0); | |
950 | mnt_drop_write_file(filp); | |
951 | return ret; | |
952 | } | |
953 | ||
02a1335f JK |
954 | static int f2fs_ioc_start_volatile_write(struct file *filp) |
955 | { | |
956 | struct inode *inode = file_inode(filp); | |
957 | ||
958 | if (!inode_owner_or_capable(inode)) | |
959 | return -EACCES; | |
960 | ||
961 | set_inode_flag(F2FS_I(inode), FI_VOLATILE_FILE); | |
b3d208f9 JK |
962 | |
963 | return f2fs_convert_inline_inode(inode); | |
02a1335f JK |
964 | } |
965 | ||
52656e6c JK |
966 | static int f2fs_ioc_fitrim(struct file *filp, unsigned long arg) |
967 | { | |
968 | struct inode *inode = file_inode(filp); | |
969 | struct super_block *sb = inode->i_sb; | |
970 | struct request_queue *q = bdev_get_queue(sb->s_bdev); | |
971 | struct fstrim_range range; | |
972 | int ret; | |
4b2fecc8 | 973 | |
52656e6c JK |
974 | if (!capable(CAP_SYS_ADMIN)) |
975 | return -EPERM; | |
4b2fecc8 | 976 | |
52656e6c JK |
977 | if (!blk_queue_discard(q)) |
978 | return -EOPNOTSUPP; | |
4b2fecc8 | 979 | |
52656e6c JK |
980 | if (copy_from_user(&range, (struct fstrim_range __user *)arg, |
981 | sizeof(range))) | |
982 | return -EFAULT; | |
4b2fecc8 | 983 | |
52656e6c JK |
984 | range.minlen = max((unsigned int)range.minlen, |
985 | q->limits.discard_granularity); | |
986 | ret = f2fs_trim_fs(F2FS_SB(sb), &range); | |
987 | if (ret < 0) | |
988 | return ret; | |
4b2fecc8 | 989 | |
52656e6c JK |
990 | if (copy_to_user((struct fstrim_range __user *)arg, &range, |
991 | sizeof(range))) | |
992 | return -EFAULT; | |
993 | return 0; | |
994 | } | |
995 | ||
996 | long f2fs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) | |
997 | { | |
998 | switch (cmd) { | |
999 | case F2FS_IOC_GETFLAGS: | |
1000 | return f2fs_ioc_getflags(filp, arg); | |
1001 | case F2FS_IOC_SETFLAGS: | |
1002 | return f2fs_ioc_setflags(filp, arg); | |
88b88a66 JK |
1003 | case F2FS_IOC_START_ATOMIC_WRITE: |
1004 | return f2fs_ioc_start_atomic_write(filp); | |
1005 | case F2FS_IOC_COMMIT_ATOMIC_WRITE: | |
1006 | return f2fs_ioc_commit_atomic_write(filp); | |
02a1335f JK |
1007 | case F2FS_IOC_START_VOLATILE_WRITE: |
1008 | return f2fs_ioc_start_volatile_write(filp); | |
52656e6c JK |
1009 | case FITRIM: |
1010 | return f2fs_ioc_fitrim(filp, arg); | |
fbfa2cc5 JK |
1011 | default: |
1012 | return -ENOTTY; | |
1013 | } | |
1014 | } | |
1015 | ||
e9750824 NJ |
1016 | #ifdef CONFIG_COMPAT |
1017 | long f2fs_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg) | |
1018 | { | |
1019 | switch (cmd) { | |
1020 | case F2FS_IOC32_GETFLAGS: | |
1021 | cmd = F2FS_IOC_GETFLAGS; | |
1022 | break; | |
1023 | case F2FS_IOC32_SETFLAGS: | |
1024 | cmd = F2FS_IOC_SETFLAGS; | |
1025 | break; | |
1026 | default: | |
1027 | return -ENOIOCTLCMD; | |
1028 | } | |
1029 | return f2fs_ioctl(file, cmd, (unsigned long) compat_ptr(arg)); | |
1030 | } | |
1031 | #endif | |
1032 | ||
fbfa2cc5 | 1033 | const struct file_operations f2fs_file_operations = { |
267378d4 | 1034 | .llseek = f2fs_llseek, |
aad4f8bb | 1035 | .read = new_sync_read, |
8174202b | 1036 | .write = new_sync_write, |
aad4f8bb | 1037 | .read_iter = generic_file_read_iter, |
8174202b | 1038 | .write_iter = generic_file_write_iter, |
fbfa2cc5 | 1039 | .open = generic_file_open, |
12662234 | 1040 | .release = f2fs_release_file, |
fbfa2cc5 JK |
1041 | .mmap = f2fs_file_mmap, |
1042 | .fsync = f2fs_sync_file, | |
1043 | .fallocate = f2fs_fallocate, | |
1044 | .unlocked_ioctl = f2fs_ioctl, | |
e9750824 NJ |
1045 | #ifdef CONFIG_COMPAT |
1046 | .compat_ioctl = f2fs_compat_ioctl, | |
1047 | #endif | |
fbfa2cc5 | 1048 | .splice_read = generic_file_splice_read, |
8d020765 | 1049 | .splice_write = iter_file_splice_write, |
fbfa2cc5 | 1050 | }; |