Commit | Line | Data |
---|---|---|
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 JK |
94 | .page_mkwrite = f2fs_vm_page_mkwrite, |
95 | .remap_pages = generic_file_remap_pages, | |
fbfa2cc5 JK |
96 | }; |
97 | ||
354a3399 JK |
98 | static int get_parent_ino(struct inode *inode, nid_t *pino) |
99 | { | |
100 | struct dentry *dentry; | |
101 | ||
102 | inode = igrab(inode); | |
103 | dentry = d_find_any_alias(inode); | |
104 | iput(inode); | |
105 | if (!dentry) | |
106 | return 0; | |
107 | ||
f0947e5c JK |
108 | if (update_dent_inode(inode, &dentry->d_name)) { |
109 | dput(dentry); | |
110 | return 0; | |
111 | } | |
354a3399 | 112 | |
f0947e5c JK |
113 | *pino = parent_ino(dentry); |
114 | dput(dentry); | |
354a3399 JK |
115 | return 1; |
116 | } | |
117 | ||
9d1589ef CY |
118 | static inline bool need_do_checkpoint(struct inode *inode) |
119 | { | |
4081363f | 120 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
9d1589ef CY |
121 | bool need_cp = false; |
122 | ||
123 | if (!S_ISREG(inode->i_mode) || inode->i_nlink != 1) | |
124 | need_cp = true; | |
125 | else if (file_wrong_pino(inode)) | |
126 | need_cp = true; | |
127 | else if (!space_for_roll_forward(sbi)) | |
128 | need_cp = true; | |
129 | else if (!is_checkpointed_node(sbi, F2FS_I(inode)->i_pino)) | |
130 | need_cp = true; | |
131 | else if (F2FS_I(inode)->xattr_ver == cur_cp_version(F2FS_CKPT(sbi))) | |
132 | need_cp = true; | |
d5053a34 JK |
133 | else if (test_opt(sbi, FASTBOOT)) |
134 | need_cp = true; | |
a344b9fd JK |
135 | else if (sbi->active_logs == 2) |
136 | need_cp = true; | |
9d1589ef CY |
137 | |
138 | return need_cp; | |
139 | } | |
140 | ||
9c7bb702 CL |
141 | static bool need_inode_page_update(struct f2fs_sb_info *sbi, nid_t ino) |
142 | { | |
143 | struct page *i = find_get_page(NODE_MAPPING(sbi), ino); | |
144 | bool ret = false; | |
145 | /* But we need to avoid that there are some inode updates */ | |
146 | if ((i && PageDirty(i)) || need_inode_block_update(sbi, ino)) | |
147 | ret = true; | |
148 | f2fs_put_page(i, 0); | |
149 | return ret; | |
150 | } | |
151 | ||
fbfa2cc5 JK |
152 | int f2fs_sync_file(struct file *file, loff_t start, loff_t end, int datasync) |
153 | { | |
154 | struct inode *inode = file->f_mapping->host; | |
d928bfbf | 155 | struct f2fs_inode_info *fi = F2FS_I(inode); |
4081363f | 156 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
2403c155 | 157 | nid_t ino = inode->i_ino; |
fbfa2cc5 JK |
158 | int ret = 0; |
159 | bool need_cp = false; | |
160 | struct writeback_control wbc = { | |
c81bf1c8 | 161 | .sync_mode = WB_SYNC_ALL, |
fbfa2cc5 JK |
162 | .nr_to_write = LONG_MAX, |
163 | .for_reclaim = 0, | |
164 | }; | |
165 | ||
6bacf52f | 166 | if (unlikely(f2fs_readonly(inode->i_sb))) |
1fa95b0b NJ |
167 | return 0; |
168 | ||
a2a4a7e4 | 169 | trace_f2fs_sync_file_enter(inode); |
ea1aa12c JK |
170 | |
171 | /* if fdatasync is triggered, let's do in-place-update */ | |
c1ce1b02 | 172 | if (get_dirty_pages(inode) <= SM_I(sbi)->min_fsync_blocks) |
ea1aa12c | 173 | set_inode_flag(fi, FI_NEED_IPU); |
fbfa2cc5 | 174 | ret = filemap_write_and_wait_range(inode->i_mapping, start, end); |
c1ce1b02 JK |
175 | clear_inode_flag(fi, FI_NEED_IPU); |
176 | ||
a2a4a7e4 NJ |
177 | if (ret) { |
178 | trace_f2fs_sync_file_exit(inode, need_cp, datasync, ret); | |
fbfa2cc5 | 179 | return ret; |
a2a4a7e4 | 180 | } |
fbfa2cc5 | 181 | |
9c7bb702 CL |
182 | /* if the inode is dirty, let's recover all the time */ |
183 | if (!datasync && is_inode_flag_set(fi, FI_DIRTY_INODE)) { | |
184 | update_inode_page(inode); | |
185 | goto go_write; | |
186 | } | |
187 | ||
6d99ba41 JK |
188 | /* |
189 | * if there is no written data, don't waste time to write recovery info. | |
190 | */ | |
191 | if (!is_inode_flag_set(fi, FI_APPEND_WRITE) && | |
2403c155 | 192 | !exist_written_data(sbi, ino, APPEND_INO)) { |
19c9c466 | 193 | |
9c7bb702 CL |
194 | /* it may call write_inode just prior to fsync */ |
195 | if (need_inode_page_update(sbi, ino)) | |
19c9c466 | 196 | goto go_write; |
19c9c466 | 197 | |
6d99ba41 | 198 | if (is_inode_flag_set(fi, FI_UPDATE_WRITE) || |
2403c155 | 199 | exist_written_data(sbi, ino, UPDATE_INO)) |
6d99ba41 JK |
200 | goto flush_out; |
201 | goto out; | |
202 | } | |
19c9c466 | 203 | go_write: |
7d82db83 JK |
204 | /* guarantee free sections for fsync */ |
205 | f2fs_balance_fs(sbi); | |
206 | ||
e5d2385e JK |
207 | /* |
208 | * Both of fdatasync() and fsync() are able to be recovered from | |
209 | * sudden-power-off. | |
210 | */ | |
9d1589ef CY |
211 | down_read(&fi->i_sem); |
212 | need_cp = need_do_checkpoint(inode); | |
d928bfbf JK |
213 | up_read(&fi->i_sem); |
214 | ||
fbfa2cc5 | 215 | if (need_cp) { |
354a3399 JK |
216 | nid_t pino; |
217 | ||
fbfa2cc5 JK |
218 | /* all the dirty node pages should be flushed for POR */ |
219 | ret = f2fs_sync_fs(inode->i_sb, 1); | |
d928bfbf JK |
220 | |
221 | down_write(&fi->i_sem); | |
9c01503f | 222 | fi->xattr_ver = 0; |
354a3399 JK |
223 | if (file_wrong_pino(inode) && inode->i_nlink == 1 && |
224 | get_parent_ino(inode, &pino)) { | |
9c01503f | 225 | fi->i_pino = pino; |
354a3399 | 226 | file_got_pino(inode); |
d928bfbf | 227 | up_write(&fi->i_sem); |
354a3399 JK |
228 | mark_inode_dirty_sync(inode); |
229 | ret = f2fs_write_inode(inode, NULL); | |
230 | if (ret) | |
231 | goto out; | |
d928bfbf JK |
232 | } else { |
233 | up_write(&fi->i_sem); | |
354a3399 | 234 | } |
fbfa2cc5 | 235 | } else { |
88bd02c9 JK |
236 | sync_nodes: |
237 | sync_node_pages(sbi, ino, &wbc); | |
238 | ||
239 | if (need_inode_block_update(sbi, ino)) { | |
b3783873 | 240 | mark_inode_dirty_sync(inode); |
398b1ac5 JK |
241 | ret = f2fs_write_inode(inode, NULL); |
242 | if (ret) | |
243 | goto out; | |
88bd02c9 | 244 | goto sync_nodes; |
398b1ac5 | 245 | } |
88bd02c9 | 246 | |
2403c155 | 247 | ret = wait_on_node_pages_writeback(sbi, ino); |
cfe58f9d JK |
248 | if (ret) |
249 | goto out; | |
6d99ba41 JK |
250 | |
251 | /* once recovery info is written, don't need to tack this */ | |
2403c155 | 252 | remove_dirty_inode(sbi, ino, APPEND_INO); |
6d99ba41 JK |
253 | clear_inode_flag(fi, FI_APPEND_WRITE); |
254 | flush_out: | |
2403c155 | 255 | remove_dirty_inode(sbi, ino, UPDATE_INO); |
6d99ba41 | 256 | clear_inode_flag(fi, FI_UPDATE_WRITE); |
9c01503f | 257 | ret = f2fs_issue_flush(sbi); |
fbfa2cc5 JK |
258 | } |
259 | out: | |
a2a4a7e4 | 260 | trace_f2fs_sync_file_exit(inode, need_cp, datasync, ret); |
fbfa2cc5 JK |
261 | return ret; |
262 | } | |
263 | ||
7f7670fe JK |
264 | static pgoff_t __get_first_dirty_index(struct address_space *mapping, |
265 | pgoff_t pgofs, int whence) | |
266 | { | |
267 | struct pagevec pvec; | |
268 | int nr_pages; | |
269 | ||
270 | if (whence != SEEK_DATA) | |
271 | return 0; | |
272 | ||
273 | /* find first dirty page index */ | |
274 | pagevec_init(&pvec, 0); | |
65b85ccc JK |
275 | nr_pages = pagevec_lookup_tag(&pvec, mapping, &pgofs, |
276 | PAGECACHE_TAG_DIRTY, 1); | |
277 | pgofs = nr_pages ? pvec.pages[0]->index : LONG_MAX; | |
7f7670fe JK |
278 | pagevec_release(&pvec); |
279 | return pgofs; | |
280 | } | |
281 | ||
282 | static bool __found_offset(block_t blkaddr, pgoff_t dirty, pgoff_t pgofs, | |
283 | int whence) | |
284 | { | |
285 | switch (whence) { | |
286 | case SEEK_DATA: | |
287 | if ((blkaddr == NEW_ADDR && dirty == pgofs) || | |
288 | (blkaddr != NEW_ADDR && blkaddr != NULL_ADDR)) | |
289 | return true; | |
290 | break; | |
291 | case SEEK_HOLE: | |
292 | if (blkaddr == NULL_ADDR) | |
293 | return true; | |
294 | break; | |
295 | } | |
296 | return false; | |
297 | } | |
298 | ||
267378d4 CY |
299 | static loff_t f2fs_seek_block(struct file *file, loff_t offset, int whence) |
300 | { | |
301 | struct inode *inode = file->f_mapping->host; | |
302 | loff_t maxbytes = inode->i_sb->s_maxbytes; | |
303 | struct dnode_of_data dn; | |
7f7670fe JK |
304 | pgoff_t pgofs, end_offset, dirty; |
305 | loff_t data_ofs = offset; | |
306 | loff_t isize; | |
267378d4 CY |
307 | int err = 0; |
308 | ||
309 | mutex_lock(&inode->i_mutex); | |
310 | ||
311 | isize = i_size_read(inode); | |
312 | if (offset >= isize) | |
313 | goto fail; | |
314 | ||
315 | /* handle inline data case */ | |
622f28ae | 316 | if (f2fs_has_inline_data(inode) || f2fs_has_inline_dentry(inode)) { |
267378d4 CY |
317 | if (whence == SEEK_HOLE) |
318 | data_ofs = isize; | |
319 | goto found; | |
320 | } | |
321 | ||
322 | pgofs = (pgoff_t)(offset >> PAGE_CACHE_SHIFT); | |
323 | ||
7f7670fe JK |
324 | dirty = __get_first_dirty_index(inode->i_mapping, pgofs, whence); |
325 | ||
267378d4 CY |
326 | for (; data_ofs < isize; data_ofs = pgofs << PAGE_CACHE_SHIFT) { |
327 | set_new_dnode(&dn, inode, NULL, NULL, 0); | |
328 | err = get_dnode_of_data(&dn, pgofs, LOOKUP_NODE_RA); | |
329 | if (err && err != -ENOENT) { | |
330 | goto fail; | |
331 | } else if (err == -ENOENT) { | |
e1c42045 | 332 | /* direct node does not exists */ |
267378d4 CY |
333 | if (whence == SEEK_DATA) { |
334 | pgofs = PGOFS_OF_NEXT_DNODE(pgofs, | |
335 | F2FS_I(inode)); | |
336 | continue; | |
337 | } else { | |
338 | goto found; | |
339 | } | |
340 | } | |
341 | ||
6b2920a5 | 342 | end_offset = ADDRS_PER_PAGE(dn.node_page, F2FS_I(inode)); |
267378d4 CY |
343 | |
344 | /* find data/hole in dnode block */ | |
345 | for (; dn.ofs_in_node < end_offset; | |
346 | dn.ofs_in_node++, pgofs++, | |
347 | data_ofs = pgofs << PAGE_CACHE_SHIFT) { | |
348 | block_t blkaddr; | |
349 | blkaddr = datablock_addr(dn.node_page, dn.ofs_in_node); | |
350 | ||
7f7670fe | 351 | if (__found_offset(blkaddr, dirty, pgofs, whence)) { |
267378d4 CY |
352 | f2fs_put_dnode(&dn); |
353 | goto found; | |
354 | } | |
355 | } | |
356 | f2fs_put_dnode(&dn); | |
357 | } | |
358 | ||
359 | if (whence == SEEK_DATA) | |
360 | goto fail; | |
267378d4 | 361 | found: |
fe369bc8 JK |
362 | if (whence == SEEK_HOLE && data_ofs > isize) |
363 | data_ofs = isize; | |
267378d4 CY |
364 | mutex_unlock(&inode->i_mutex); |
365 | return vfs_setpos(file, data_ofs, maxbytes); | |
366 | fail: | |
367 | mutex_unlock(&inode->i_mutex); | |
368 | return -ENXIO; | |
369 | } | |
370 | ||
371 | static loff_t f2fs_llseek(struct file *file, loff_t offset, int whence) | |
372 | { | |
373 | struct inode *inode = file->f_mapping->host; | |
374 | loff_t maxbytes = inode->i_sb->s_maxbytes; | |
375 | ||
376 | switch (whence) { | |
377 | case SEEK_SET: | |
378 | case SEEK_CUR: | |
379 | case SEEK_END: | |
380 | return generic_file_llseek_size(file, offset, whence, | |
381 | maxbytes, i_size_read(inode)); | |
382 | case SEEK_DATA: | |
383 | case SEEK_HOLE: | |
0b4c5afd JK |
384 | if (offset < 0) |
385 | return -ENXIO; | |
267378d4 CY |
386 | return f2fs_seek_block(file, offset, whence); |
387 | } | |
388 | ||
389 | return -EINVAL; | |
390 | } | |
391 | ||
fbfa2cc5 JK |
392 | static int f2fs_file_mmap(struct file *file, struct vm_area_struct *vma) |
393 | { | |
b3d208f9 JK |
394 | struct inode *inode = file_inode(file); |
395 | ||
396 | /* we don't need to use inline_data strictly */ | |
397 | if (f2fs_has_inline_data(inode)) { | |
398 | int err = f2fs_convert_inline_inode(inode); | |
399 | if (err) | |
400 | return err; | |
401 | } | |
402 | ||
fbfa2cc5 JK |
403 | file_accessed(file); |
404 | vma->vm_ops = &f2fs_file_vm_ops; | |
405 | return 0; | |
406 | } | |
407 | ||
b292dcab | 408 | int truncate_data_blocks_range(struct dnode_of_data *dn, int count) |
fbfa2cc5 JK |
409 | { |
410 | int nr_free = 0, ofs = dn->ofs_in_node; | |
4081363f | 411 | struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); |
fbfa2cc5 JK |
412 | struct f2fs_node *raw_node; |
413 | __le32 *addr; | |
414 | ||
45590710 | 415 | raw_node = F2FS_NODE(dn->node_page); |
fbfa2cc5 JK |
416 | addr = blkaddr_in_node(raw_node) + ofs; |
417 | ||
6c311ec6 | 418 | for (; count > 0; count--, addr++, dn->ofs_in_node++) { |
fbfa2cc5 JK |
419 | block_t blkaddr = le32_to_cpu(*addr); |
420 | if (blkaddr == NULL_ADDR) | |
421 | continue; | |
422 | ||
423 | update_extent_cache(NULL_ADDR, dn); | |
424 | invalidate_blocks(sbi, blkaddr); | |
fbfa2cc5 JK |
425 | nr_free++; |
426 | } | |
427 | if (nr_free) { | |
d7cc950b | 428 | dec_valid_block_count(sbi, dn->inode, nr_free); |
fbfa2cc5 JK |
429 | set_page_dirty(dn->node_page); |
430 | sync_inode_page(dn); | |
431 | } | |
432 | dn->ofs_in_node = ofs; | |
51dd6249 NJ |
433 | |
434 | trace_f2fs_truncate_data_blocks_range(dn->inode, dn->nid, | |
435 | dn->ofs_in_node, nr_free); | |
fbfa2cc5 JK |
436 | return nr_free; |
437 | } | |
438 | ||
439 | void truncate_data_blocks(struct dnode_of_data *dn) | |
440 | { | |
441 | truncate_data_blocks_range(dn, ADDRS_PER_BLOCK); | |
442 | } | |
443 | ||
b3d208f9 | 444 | static int truncate_partial_data_page(struct inode *inode, u64 from) |
fbfa2cc5 JK |
445 | { |
446 | unsigned offset = from & (PAGE_CACHE_SIZE - 1); | |
447 | struct page *page; | |
448 | ||
449 | if (!offset) | |
b3d208f9 | 450 | return 0; |
fbfa2cc5 | 451 | |
c718379b | 452 | page = find_data_page(inode, from >> PAGE_CACHE_SHIFT, false); |
fbfa2cc5 | 453 | if (IS_ERR(page)) |
b3d208f9 | 454 | return 0; |
fbfa2cc5 JK |
455 | |
456 | lock_page(page); | |
ca0a81b3 CY |
457 | if (unlikely(!PageUptodate(page) || |
458 | page->mapping != inode->i_mapping)) | |
459 | goto out; | |
460 | ||
3cb5ad15 | 461 | f2fs_wait_on_page_writeback(page, DATA); |
fbfa2cc5 JK |
462 | zero_user(page, offset, PAGE_CACHE_SIZE - offset); |
463 | set_page_dirty(page); | |
ca0a81b3 | 464 | out: |
fbfa2cc5 | 465 | f2fs_put_page(page, 1); |
b3d208f9 | 466 | return 0; |
fbfa2cc5 JK |
467 | } |
468 | ||
764aa3e9 | 469 | int truncate_blocks(struct inode *inode, u64 from, bool lock) |
fbfa2cc5 | 470 | { |
4081363f | 471 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
fbfa2cc5 JK |
472 | unsigned int blocksize = inode->i_sb->s_blocksize; |
473 | struct dnode_of_data dn; | |
474 | pgoff_t free_from; | |
9ffe0fb5 | 475 | int count = 0, err = 0; |
b3d208f9 | 476 | struct page *ipage; |
fbfa2cc5 | 477 | |
51dd6249 NJ |
478 | trace_f2fs_truncate_blocks_enter(inode, from); |
479 | ||
fbfa2cc5 | 480 | free_from = (pgoff_t) |
b3d208f9 | 481 | ((from + blocksize - 1) >> (sbi->log_blocksize)); |
fbfa2cc5 | 482 | |
764aa3e9 JK |
483 | if (lock) |
484 | f2fs_lock_op(sbi); | |
9ffe0fb5 | 485 | |
b3d208f9 JK |
486 | ipage = get_node_page(sbi, inode->i_ino); |
487 | if (IS_ERR(ipage)) { | |
488 | err = PTR_ERR(ipage); | |
489 | goto out; | |
490 | } | |
491 | ||
492 | if (f2fs_has_inline_data(inode)) { | |
b3d208f9 JK |
493 | f2fs_put_page(ipage, 1); |
494 | goto out; | |
495 | } | |
496 | ||
497 | set_new_dnode(&dn, inode, ipage, NULL, 0); | |
266e97a8 | 498 | err = get_dnode_of_data(&dn, free_from, LOOKUP_NODE); |
fbfa2cc5 JK |
499 | if (err) { |
500 | if (err == -ENOENT) | |
501 | goto free_next; | |
b3d208f9 | 502 | goto out; |
1ce86bf6 JK |
503 | } |
504 | ||
6403eb1f | 505 | count = ADDRS_PER_PAGE(dn.node_page, F2FS_I(inode)); |
fbfa2cc5 JK |
506 | |
507 | count -= dn.ofs_in_node; | |
9850cf4a | 508 | f2fs_bug_on(sbi, count < 0); |
39936837 | 509 | |
fbfa2cc5 JK |
510 | if (dn.ofs_in_node || IS_INODE(dn.node_page)) { |
511 | truncate_data_blocks_range(&dn, count); | |
512 | free_from += count; | |
513 | } | |
514 | ||
515 | f2fs_put_dnode(&dn); | |
516 | free_next: | |
517 | err = truncate_inode_blocks(inode, free_from); | |
764d2c80 JK |
518 | out: |
519 | if (lock) | |
520 | f2fs_unlock_op(sbi); | |
b3d208f9 JK |
521 | |
522 | /* lastly zero out the first data page */ | |
523 | if (!err) | |
524 | err = truncate_partial_data_page(inode, from); | |
fbfa2cc5 | 525 | |
51dd6249 | 526 | trace_f2fs_truncate_blocks_exit(inode, err); |
fbfa2cc5 JK |
527 | return err; |
528 | } | |
529 | ||
530 | void f2fs_truncate(struct inode *inode) | |
531 | { | |
532 | if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) || | |
533 | S_ISLNK(inode->i_mode))) | |
534 | return; | |
535 | ||
51dd6249 NJ |
536 | trace_f2fs_truncate(inode); |
537 | ||
92dffd01 JK |
538 | /* we should check inline_data size */ |
539 | if (f2fs_has_inline_data(inode) && !f2fs_may_inline(inode)) { | |
540 | if (f2fs_convert_inline_inode(inode)) | |
541 | return; | |
542 | } | |
543 | ||
764aa3e9 | 544 | if (!truncate_blocks(inode, i_size_read(inode), true)) { |
fbfa2cc5 JK |
545 | inode->i_mtime = inode->i_ctime = CURRENT_TIME; |
546 | mark_inode_dirty(inode); | |
547 | } | |
fbfa2cc5 JK |
548 | } |
549 | ||
2d4d9fb5 | 550 | int f2fs_getattr(struct vfsmount *mnt, |
fbfa2cc5 JK |
551 | struct dentry *dentry, struct kstat *stat) |
552 | { | |
553 | struct inode *inode = dentry->d_inode; | |
554 | generic_fillattr(inode, stat); | |
555 | stat->blocks <<= 3; | |
556 | return 0; | |
557 | } | |
558 | ||
559 | #ifdef CONFIG_F2FS_FS_POSIX_ACL | |
560 | static void __setattr_copy(struct inode *inode, const struct iattr *attr) | |
561 | { | |
562 | struct f2fs_inode_info *fi = F2FS_I(inode); | |
563 | unsigned int ia_valid = attr->ia_valid; | |
564 | ||
565 | if (ia_valid & ATTR_UID) | |
566 | inode->i_uid = attr->ia_uid; | |
567 | if (ia_valid & ATTR_GID) | |
568 | inode->i_gid = attr->ia_gid; | |
569 | if (ia_valid & ATTR_ATIME) | |
570 | inode->i_atime = timespec_trunc(attr->ia_atime, | |
571 | inode->i_sb->s_time_gran); | |
572 | if (ia_valid & ATTR_MTIME) | |
573 | inode->i_mtime = timespec_trunc(attr->ia_mtime, | |
574 | inode->i_sb->s_time_gran); | |
575 | if (ia_valid & ATTR_CTIME) | |
576 | inode->i_ctime = timespec_trunc(attr->ia_ctime, | |
577 | inode->i_sb->s_time_gran); | |
578 | if (ia_valid & ATTR_MODE) { | |
579 | umode_t mode = attr->ia_mode; | |
580 | ||
581 | if (!in_group_p(inode->i_gid) && !capable(CAP_FSETID)) | |
582 | mode &= ~S_ISGID; | |
583 | set_acl_inode(fi, mode); | |
584 | } | |
585 | } | |
586 | #else | |
587 | #define __setattr_copy setattr_copy | |
588 | #endif | |
589 | ||
590 | int f2fs_setattr(struct dentry *dentry, struct iattr *attr) | |
591 | { | |
592 | struct inode *inode = dentry->d_inode; | |
593 | struct f2fs_inode_info *fi = F2FS_I(inode); | |
594 | int err; | |
595 | ||
596 | err = inode_change_ok(inode, attr); | |
597 | if (err) | |
598 | return err; | |
599 | ||
09db6a2e | 600 | if (attr->ia_valid & ATTR_SIZE) { |
09db6a2e CY |
601 | if (attr->ia_size != i_size_read(inode)) { |
602 | truncate_setsize(inode, attr->ia_size); | |
603 | f2fs_truncate(inode); | |
604 | f2fs_balance_fs(F2FS_I_SB(inode)); | |
605 | } else { | |
606 | /* | |
607 | * giving a chance to truncate blocks past EOF which | |
608 | * are fallocated with FALLOC_FL_KEEP_SIZE. | |
609 | */ | |
610 | f2fs_truncate(inode); | |
611 | } | |
fbfa2cc5 JK |
612 | } |
613 | ||
614 | __setattr_copy(inode, attr); | |
615 | ||
616 | if (attr->ia_valid & ATTR_MODE) { | |
a6dda0e6 | 617 | err = posix_acl_chmod(inode, get_inode_mode(inode)); |
fbfa2cc5 JK |
618 | if (err || is_inode_flag_set(fi, FI_ACL_MODE)) { |
619 | inode->i_mode = fi->i_acl_mode; | |
620 | clear_inode_flag(fi, FI_ACL_MODE); | |
621 | } | |
622 | } | |
623 | ||
624 | mark_inode_dirty(inode); | |
625 | return err; | |
626 | } | |
627 | ||
628 | const struct inode_operations f2fs_file_inode_operations = { | |
629 | .getattr = f2fs_getattr, | |
630 | .setattr = f2fs_setattr, | |
631 | .get_acl = f2fs_get_acl, | |
a6dda0e6 | 632 | .set_acl = f2fs_set_acl, |
fbfa2cc5 JK |
633 | #ifdef CONFIG_F2FS_FS_XATTR |
634 | .setxattr = generic_setxattr, | |
635 | .getxattr = generic_getxattr, | |
636 | .listxattr = f2fs_listxattr, | |
637 | .removexattr = generic_removexattr, | |
638 | #endif | |
9ab70134 | 639 | .fiemap = f2fs_fiemap, |
fbfa2cc5 JK |
640 | }; |
641 | ||
642 | static void fill_zero(struct inode *inode, pgoff_t index, | |
643 | loff_t start, loff_t len) | |
644 | { | |
4081363f | 645 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
fbfa2cc5 JK |
646 | struct page *page; |
647 | ||
648 | if (!len) | |
649 | return; | |
650 | ||
bd43df02 JK |
651 | f2fs_balance_fs(sbi); |
652 | ||
e479556b | 653 | f2fs_lock_op(sbi); |
64aa7ed9 | 654 | page = get_new_data_page(inode, NULL, index, false); |
e479556b | 655 | f2fs_unlock_op(sbi); |
fbfa2cc5 JK |
656 | |
657 | if (!IS_ERR(page)) { | |
3cb5ad15 | 658 | f2fs_wait_on_page_writeback(page, DATA); |
fbfa2cc5 JK |
659 | zero_user(page, start, len); |
660 | set_page_dirty(page); | |
661 | f2fs_put_page(page, 1); | |
662 | } | |
663 | } | |
664 | ||
665 | int truncate_hole(struct inode *inode, pgoff_t pg_start, pgoff_t pg_end) | |
666 | { | |
667 | pgoff_t index; | |
668 | int err; | |
669 | ||
670 | for (index = pg_start; index < pg_end; index++) { | |
671 | struct dnode_of_data dn; | |
9eaeba70 | 672 | |
fbfa2cc5 | 673 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
266e97a8 | 674 | err = get_dnode_of_data(&dn, index, LOOKUP_NODE); |
fbfa2cc5 | 675 | if (err) { |
fbfa2cc5 JK |
676 | if (err == -ENOENT) |
677 | continue; | |
678 | return err; | |
679 | } | |
680 | ||
681 | if (dn.data_blkaddr != NULL_ADDR) | |
682 | truncate_data_blocks_range(&dn, 1); | |
683 | f2fs_put_dnode(&dn); | |
fbfa2cc5 JK |
684 | } |
685 | return 0; | |
686 | } | |
687 | ||
a66c7b2f | 688 | static int punch_hole(struct inode *inode, loff_t offset, loff_t len) |
fbfa2cc5 JK |
689 | { |
690 | pgoff_t pg_start, pg_end; | |
691 | loff_t off_start, off_end; | |
692 | int ret = 0; | |
693 | ||
14cecc5c CY |
694 | if (!S_ISREG(inode->i_mode)) |
695 | return -EOPNOTSUPP; | |
696 | ||
697 | /* skip punching hole beyond i_size */ | |
698 | if (offset >= inode->i_size) | |
699 | return ret; | |
700 | ||
b3d208f9 JK |
701 | if (f2fs_has_inline_data(inode)) { |
702 | ret = f2fs_convert_inline_inode(inode); | |
703 | if (ret) | |
704 | return ret; | |
705 | } | |
9ffe0fb5 | 706 | |
fbfa2cc5 JK |
707 | pg_start = ((unsigned long long) offset) >> PAGE_CACHE_SHIFT; |
708 | pg_end = ((unsigned long long) offset + len) >> PAGE_CACHE_SHIFT; | |
709 | ||
710 | off_start = offset & (PAGE_CACHE_SIZE - 1); | |
711 | off_end = (offset + len) & (PAGE_CACHE_SIZE - 1); | |
712 | ||
713 | if (pg_start == pg_end) { | |
714 | fill_zero(inode, pg_start, off_start, | |
715 | off_end - off_start); | |
716 | } else { | |
717 | if (off_start) | |
718 | fill_zero(inode, pg_start++, off_start, | |
719 | PAGE_CACHE_SIZE - off_start); | |
720 | if (off_end) | |
721 | fill_zero(inode, pg_end, 0, off_end); | |
722 | ||
723 | if (pg_start < pg_end) { | |
724 | struct address_space *mapping = inode->i_mapping; | |
725 | loff_t blk_start, blk_end; | |
4081363f | 726 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
1127a3d4 JH |
727 | |
728 | f2fs_balance_fs(sbi); | |
fbfa2cc5 JK |
729 | |
730 | blk_start = pg_start << PAGE_CACHE_SHIFT; | |
731 | blk_end = pg_end << PAGE_CACHE_SHIFT; | |
732 | truncate_inode_pages_range(mapping, blk_start, | |
733 | blk_end - 1); | |
39936837 | 734 | |
e479556b | 735 | f2fs_lock_op(sbi); |
fbfa2cc5 | 736 | ret = truncate_hole(inode, pg_start, pg_end); |
e479556b | 737 | f2fs_unlock_op(sbi); |
fbfa2cc5 JK |
738 | } |
739 | } | |
740 | ||
fbfa2cc5 JK |
741 | return ret; |
742 | } | |
743 | ||
744 | static int expand_inode_data(struct inode *inode, loff_t offset, | |
745 | loff_t len, int mode) | |
746 | { | |
4081363f | 747 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
fbfa2cc5 JK |
748 | pgoff_t index, pg_start, pg_end; |
749 | loff_t new_size = i_size_read(inode); | |
750 | loff_t off_start, off_end; | |
751 | int ret = 0; | |
752 | ||
497a0930 CY |
753 | f2fs_balance_fs(sbi); |
754 | ||
fbfa2cc5 JK |
755 | ret = inode_newsize_ok(inode, (len + offset)); |
756 | if (ret) | |
757 | return ret; | |
758 | ||
b3d208f9 JK |
759 | if (f2fs_has_inline_data(inode)) { |
760 | ret = f2fs_convert_inline_inode(inode); | |
761 | if (ret) | |
762 | return ret; | |
763 | } | |
9e09fc85 | 764 | |
fbfa2cc5 JK |
765 | pg_start = ((unsigned long long) offset) >> PAGE_CACHE_SHIFT; |
766 | pg_end = ((unsigned long long) offset + len) >> PAGE_CACHE_SHIFT; | |
767 | ||
768 | off_start = offset & (PAGE_CACHE_SIZE - 1); | |
769 | off_end = (offset + len) & (PAGE_CACHE_SIZE - 1); | |
770 | ||
ead43275 JK |
771 | f2fs_lock_op(sbi); |
772 | ||
fbfa2cc5 JK |
773 | for (index = pg_start; index <= pg_end; index++) { |
774 | struct dnode_of_data dn; | |
775 | ||
98397ff3 JK |
776 | if (index == pg_end && !off_end) |
777 | goto noalloc; | |
778 | ||
fbfa2cc5 | 779 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
b600965c | 780 | ret = f2fs_reserve_block(&dn, index); |
b600965c | 781 | if (ret) |
fbfa2cc5 | 782 | break; |
98397ff3 | 783 | noalloc: |
fbfa2cc5 JK |
784 | if (pg_start == pg_end) |
785 | new_size = offset + len; | |
786 | else if (index == pg_start && off_start) | |
787 | new_size = (index + 1) << PAGE_CACHE_SHIFT; | |
788 | else if (index == pg_end) | |
789 | new_size = (index << PAGE_CACHE_SHIFT) + off_end; | |
790 | else | |
791 | new_size += PAGE_CACHE_SIZE; | |
792 | } | |
793 | ||
794 | if (!(mode & FALLOC_FL_KEEP_SIZE) && | |
795 | i_size_read(inode) < new_size) { | |
796 | i_size_write(inode, new_size); | |
797 | mark_inode_dirty(inode); | |
ead43275 | 798 | update_inode_page(inode); |
fbfa2cc5 | 799 | } |
ead43275 | 800 | f2fs_unlock_op(sbi); |
fbfa2cc5 JK |
801 | |
802 | return ret; | |
803 | } | |
804 | ||
805 | static long f2fs_fallocate(struct file *file, int mode, | |
806 | loff_t offset, loff_t len) | |
807 | { | |
6131ffaa | 808 | struct inode *inode = file_inode(file); |
fbfa2cc5 JK |
809 | long ret; |
810 | ||
811 | if (mode & ~(FALLOC_FL_KEEP_SIZE | FALLOC_FL_PUNCH_HOLE)) | |
812 | return -EOPNOTSUPP; | |
813 | ||
3375f696 CY |
814 | mutex_lock(&inode->i_mutex); |
815 | ||
fbfa2cc5 | 816 | if (mode & FALLOC_FL_PUNCH_HOLE) |
a66c7b2f | 817 | ret = punch_hole(inode, offset, len); |
fbfa2cc5 JK |
818 | else |
819 | ret = expand_inode_data(inode, offset, len, mode); | |
820 | ||
3af60a49 NJ |
821 | if (!ret) { |
822 | inode->i_mtime = inode->i_ctime = CURRENT_TIME; | |
823 | mark_inode_dirty(inode); | |
824 | } | |
3375f696 CY |
825 | |
826 | mutex_unlock(&inode->i_mutex); | |
827 | ||
c01e2853 | 828 | trace_f2fs_fallocate(inode, mode, offset, len, ret); |
fbfa2cc5 JK |
829 | return ret; |
830 | } | |
831 | ||
832 | #define F2FS_REG_FLMASK (~(FS_DIRSYNC_FL | FS_TOPDIR_FL)) | |
833 | #define F2FS_OTHER_FLMASK (FS_NODUMP_FL | FS_NOATIME_FL) | |
834 | ||
835 | static inline __u32 f2fs_mask_flags(umode_t mode, __u32 flags) | |
836 | { | |
837 | if (S_ISDIR(mode)) | |
838 | return flags; | |
839 | else if (S_ISREG(mode)) | |
840 | return flags & F2FS_REG_FLMASK; | |
841 | else | |
842 | return flags & F2FS_OTHER_FLMASK; | |
843 | } | |
844 | ||
52656e6c | 845 | static int f2fs_ioc_getflags(struct file *filp, unsigned long arg) |
fbfa2cc5 | 846 | { |
6131ffaa | 847 | struct inode *inode = file_inode(filp); |
fbfa2cc5 | 848 | struct f2fs_inode_info *fi = F2FS_I(inode); |
52656e6c JK |
849 | unsigned int flags = fi->i_flags & FS_FL_USER_VISIBLE; |
850 | return put_user(flags, (int __user *)arg); | |
851 | } | |
fbfa2cc5 | 852 | |
52656e6c JK |
853 | static int f2fs_ioc_setflags(struct file *filp, unsigned long arg) |
854 | { | |
855 | struct inode *inode = file_inode(filp); | |
856 | struct f2fs_inode_info *fi = F2FS_I(inode); | |
857 | unsigned int flags = fi->i_flags & FS_FL_USER_VISIBLE; | |
858 | unsigned int oldflags; | |
859 | int ret; | |
fbfa2cc5 | 860 | |
52656e6c JK |
861 | ret = mnt_want_write_file(filp); |
862 | if (ret) | |
863 | return ret; | |
fbfa2cc5 | 864 | |
52656e6c JK |
865 | if (!inode_owner_or_capable(inode)) { |
866 | ret = -EACCES; | |
867 | goto out; | |
868 | } | |
fbfa2cc5 | 869 | |
52656e6c JK |
870 | if (get_user(flags, (int __user *)arg)) { |
871 | ret = -EFAULT; | |
872 | goto out; | |
873 | } | |
fbfa2cc5 | 874 | |
52656e6c | 875 | flags = f2fs_mask_flags(inode->i_mode, flags); |
fbfa2cc5 | 876 | |
52656e6c | 877 | mutex_lock(&inode->i_mutex); |
fbfa2cc5 | 878 | |
52656e6c | 879 | oldflags = fi->i_flags; |
fbfa2cc5 | 880 | |
52656e6c JK |
881 | if ((flags ^ oldflags) & (FS_APPEND_FL | FS_IMMUTABLE_FL)) { |
882 | if (!capable(CAP_LINUX_IMMUTABLE)) { | |
883 | mutex_unlock(&inode->i_mutex); | |
884 | ret = -EPERM; | |
885 | goto out; | |
fbfa2cc5 | 886 | } |
52656e6c | 887 | } |
fbfa2cc5 | 888 | |
52656e6c JK |
889 | flags = flags & FS_FL_USER_MODIFIABLE; |
890 | flags |= oldflags & ~FS_FL_USER_MODIFIABLE; | |
891 | fi->i_flags = flags; | |
892 | mutex_unlock(&inode->i_mutex); | |
fbfa2cc5 | 893 | |
52656e6c JK |
894 | f2fs_set_inode_flags(inode); |
895 | inode->i_ctime = CURRENT_TIME; | |
896 | mark_inode_dirty(inode); | |
fbfa2cc5 | 897 | out: |
52656e6c JK |
898 | mnt_drop_write_file(filp); |
899 | return ret; | |
900 | } | |
4b2fecc8 | 901 | |
88b88a66 JK |
902 | static int f2fs_ioc_start_atomic_write(struct file *filp) |
903 | { | |
904 | struct inode *inode = file_inode(filp); | |
905 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
906 | ||
907 | if (!inode_owner_or_capable(inode)) | |
908 | return -EACCES; | |
909 | ||
910 | f2fs_balance_fs(sbi); | |
911 | ||
912 | set_inode_flag(F2FS_I(inode), FI_ATOMIC_FILE); | |
913 | ||
b3d208f9 | 914 | return f2fs_convert_inline_inode(inode); |
88b88a66 JK |
915 | } |
916 | ||
12662234 JK |
917 | static int f2fs_release_file(struct inode *inode, struct file *filp) |
918 | { | |
919 | /* some remained atomic pages should discarded */ | |
920 | if (f2fs_is_atomic_file(inode) || f2fs_is_volatile_file(inode)) | |
921 | commit_inmem_pages(inode, true); | |
922 | return 0; | |
923 | } | |
924 | ||
88b88a66 JK |
925 | static int f2fs_ioc_commit_atomic_write(struct file *filp) |
926 | { | |
927 | struct inode *inode = file_inode(filp); | |
928 | int ret; | |
929 | ||
930 | if (!inode_owner_or_capable(inode)) | |
931 | return -EACCES; | |
932 | ||
02a1335f JK |
933 | if (f2fs_is_volatile_file(inode)) |
934 | return 0; | |
935 | ||
88b88a66 JK |
936 | ret = mnt_want_write_file(filp); |
937 | if (ret) | |
938 | return ret; | |
939 | ||
940 | if (f2fs_is_atomic_file(inode)) | |
941 | commit_inmem_pages(inode, false); | |
942 | ||
943 | ret = f2fs_sync_file(filp, 0, LONG_MAX, 0); | |
944 | mnt_drop_write_file(filp); | |
945 | return ret; | |
946 | } | |
947 | ||
02a1335f JK |
948 | static int f2fs_ioc_start_volatile_write(struct file *filp) |
949 | { | |
950 | struct inode *inode = file_inode(filp); | |
951 | ||
952 | if (!inode_owner_or_capable(inode)) | |
953 | return -EACCES; | |
954 | ||
955 | set_inode_flag(F2FS_I(inode), FI_VOLATILE_FILE); | |
b3d208f9 JK |
956 | |
957 | return f2fs_convert_inline_inode(inode); | |
02a1335f JK |
958 | } |
959 | ||
52656e6c JK |
960 | static int f2fs_ioc_fitrim(struct file *filp, unsigned long arg) |
961 | { | |
962 | struct inode *inode = file_inode(filp); | |
963 | struct super_block *sb = inode->i_sb; | |
964 | struct request_queue *q = bdev_get_queue(sb->s_bdev); | |
965 | struct fstrim_range range; | |
966 | int ret; | |
4b2fecc8 | 967 | |
52656e6c JK |
968 | if (!capable(CAP_SYS_ADMIN)) |
969 | return -EPERM; | |
4b2fecc8 | 970 | |
52656e6c JK |
971 | if (!blk_queue_discard(q)) |
972 | return -EOPNOTSUPP; | |
4b2fecc8 | 973 | |
52656e6c JK |
974 | if (copy_from_user(&range, (struct fstrim_range __user *)arg, |
975 | sizeof(range))) | |
976 | return -EFAULT; | |
4b2fecc8 | 977 | |
52656e6c JK |
978 | range.minlen = max((unsigned int)range.minlen, |
979 | q->limits.discard_granularity); | |
980 | ret = f2fs_trim_fs(F2FS_SB(sb), &range); | |
981 | if (ret < 0) | |
982 | return ret; | |
4b2fecc8 | 983 | |
52656e6c JK |
984 | if (copy_to_user((struct fstrim_range __user *)arg, &range, |
985 | sizeof(range))) | |
986 | return -EFAULT; | |
987 | return 0; | |
988 | } | |
989 | ||
990 | long f2fs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) | |
991 | { | |
992 | switch (cmd) { | |
993 | case F2FS_IOC_GETFLAGS: | |
994 | return f2fs_ioc_getflags(filp, arg); | |
995 | case F2FS_IOC_SETFLAGS: | |
996 | return f2fs_ioc_setflags(filp, arg); | |
88b88a66 JK |
997 | case F2FS_IOC_START_ATOMIC_WRITE: |
998 | return f2fs_ioc_start_atomic_write(filp); | |
999 | case F2FS_IOC_COMMIT_ATOMIC_WRITE: | |
1000 | return f2fs_ioc_commit_atomic_write(filp); | |
02a1335f JK |
1001 | case F2FS_IOC_START_VOLATILE_WRITE: |
1002 | return f2fs_ioc_start_volatile_write(filp); | |
52656e6c JK |
1003 | case FITRIM: |
1004 | return f2fs_ioc_fitrim(filp, arg); | |
fbfa2cc5 JK |
1005 | default: |
1006 | return -ENOTTY; | |
1007 | } | |
1008 | } | |
1009 | ||
e9750824 NJ |
1010 | #ifdef CONFIG_COMPAT |
1011 | long f2fs_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg) | |
1012 | { | |
1013 | switch (cmd) { | |
1014 | case F2FS_IOC32_GETFLAGS: | |
1015 | cmd = F2FS_IOC_GETFLAGS; | |
1016 | break; | |
1017 | case F2FS_IOC32_SETFLAGS: | |
1018 | cmd = F2FS_IOC_SETFLAGS; | |
1019 | break; | |
1020 | default: | |
1021 | return -ENOIOCTLCMD; | |
1022 | } | |
1023 | return f2fs_ioctl(file, cmd, (unsigned long) compat_ptr(arg)); | |
1024 | } | |
1025 | #endif | |
1026 | ||
fbfa2cc5 | 1027 | const struct file_operations f2fs_file_operations = { |
267378d4 | 1028 | .llseek = f2fs_llseek, |
aad4f8bb | 1029 | .read = new_sync_read, |
8174202b | 1030 | .write = new_sync_write, |
aad4f8bb | 1031 | .read_iter = generic_file_read_iter, |
8174202b | 1032 | .write_iter = generic_file_write_iter, |
fbfa2cc5 | 1033 | .open = generic_file_open, |
12662234 | 1034 | .release = f2fs_release_file, |
fbfa2cc5 JK |
1035 | .mmap = f2fs_file_mmap, |
1036 | .fsync = f2fs_sync_file, | |
1037 | .fallocate = f2fs_fallocate, | |
1038 | .unlocked_ioctl = f2fs_ioctl, | |
e9750824 NJ |
1039 | #ifdef CONFIG_COMPAT |
1040 | .compat_ioctl = f2fs_compat_ioctl, | |
1041 | #endif | |
fbfa2cc5 | 1042 | .splice_read = generic_file_splice_read, |
8d020765 | 1043 | .splice_write = iter_file_splice_write, |
fbfa2cc5 | 1044 | }; |