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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> |
8da4b8c4 | 23 | #include <linux/uuid.h> |
fbfa2cc5 JK |
24 | |
25 | #include "f2fs.h" | |
26 | #include "node.h" | |
27 | #include "segment.h" | |
28 | #include "xattr.h" | |
29 | #include "acl.h" | |
c1c1b583 | 30 | #include "gc.h" |
db9f7c1a | 31 | #include "trace.h" |
a2a4a7e4 | 32 | #include <trace/events/f2fs.h> |
fbfa2cc5 JK |
33 | |
34 | static int f2fs_vm_page_mkwrite(struct vm_area_struct *vma, | |
35 | struct vm_fault *vmf) | |
36 | { | |
37 | struct page *page = vmf->page; | |
6131ffaa | 38 | struct inode *inode = file_inode(vma->vm_file); |
4081363f | 39 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
fbfa2cc5 | 40 | struct dnode_of_data dn; |
e479556b | 41 | int err; |
fbfa2cc5 | 42 | |
fbfa2cc5 | 43 | sb_start_pagefault(inode->i_sb); |
b3d208f9 JK |
44 | |
45 | f2fs_bug_on(sbi, f2fs_has_inline_data(inode)); | |
b067ba1f | 46 | |
fbfa2cc5 | 47 | /* block allocation */ |
e479556b | 48 | f2fs_lock_op(sbi); |
b3d208f9 | 49 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
b600965c | 50 | err = f2fs_reserve_block(&dn, page->index); |
9ba69cf9 JK |
51 | if (err) { |
52 | f2fs_unlock_op(sbi); | |
b600965c | 53 | goto out; |
9ba69cf9 JK |
54 | } |
55 | f2fs_put_dnode(&dn); | |
56 | f2fs_unlock_op(sbi); | |
fbfa2cc5 | 57 | |
2c4db1a6 | 58 | f2fs_balance_fs(sbi, dn.node_changed); |
2a340760 | 59 | |
9851e6e1 | 60 | file_update_time(vma->vm_file); |
fbfa2cc5 | 61 | lock_page(page); |
6bacf52f | 62 | if (unlikely(page->mapping != inode->i_mapping || |
9851e6e1 | 63 | page_offset(page) > i_size_read(inode) || |
6bacf52f | 64 | !PageUptodate(page))) { |
fbfa2cc5 JK |
65 | unlock_page(page); |
66 | err = -EFAULT; | |
67 | goto out; | |
68 | } | |
69 | ||
70 | /* | |
71 | * check to see if the page is mapped already (no holes) | |
72 | */ | |
73 | if (PageMappedToDisk(page)) | |
9851e6e1 | 74 | goto mapped; |
fbfa2cc5 JK |
75 | |
76 | /* page is wholly or partially inside EOF */ | |
09cbfeaf | 77 | if (((loff_t)(page->index + 1) << PAGE_SHIFT) > |
9edcdabf | 78 | i_size_read(inode)) { |
fbfa2cc5 | 79 | unsigned offset; |
09cbfeaf KS |
80 | offset = i_size_read(inode) & ~PAGE_MASK; |
81 | zero_user_segment(page, offset, PAGE_SIZE); | |
fbfa2cc5 JK |
82 | } |
83 | set_page_dirty(page); | |
84 | SetPageUptodate(page); | |
85 | ||
e943a10d | 86 | trace_f2fs_vm_page_mkwrite(page, DATA); |
9851e6e1 NJ |
87 | mapped: |
88 | /* fill the page */ | |
fec1d657 | 89 | f2fs_wait_on_page_writeback(page, DATA, false); |
08b39fbd CY |
90 | |
91 | /* wait for GCed encrypted page writeback */ | |
92 | if (f2fs_encrypted_inode(inode) && S_ISREG(inode->i_mode)) | |
93 | f2fs_wait_on_encrypted_page_writeback(sbi, dn.data_blkaddr); | |
94 | ||
5b339124 CY |
95 | /* if gced page is attached, don't write to cold segment */ |
96 | clear_cold_data(page); | |
fbfa2cc5 JK |
97 | out: |
98 | sb_end_pagefault(inode->i_sb); | |
d0239e1b | 99 | f2fs_update_time(sbi, REQ_TIME); |
fbfa2cc5 JK |
100 | return block_page_mkwrite_return(err); |
101 | } | |
102 | ||
103 | static const struct vm_operations_struct f2fs_file_vm_ops = { | |
692bb55d | 104 | .fault = filemap_fault, |
f1820361 | 105 | .map_pages = filemap_map_pages, |
692bb55d | 106 | .page_mkwrite = f2fs_vm_page_mkwrite, |
fbfa2cc5 JK |
107 | }; |
108 | ||
354a3399 JK |
109 | static int get_parent_ino(struct inode *inode, nid_t *pino) |
110 | { | |
111 | struct dentry *dentry; | |
112 | ||
113 | inode = igrab(inode); | |
114 | dentry = d_find_any_alias(inode); | |
115 | iput(inode); | |
116 | if (!dentry) | |
117 | return 0; | |
118 | ||
e7d55452 | 119 | if (update_dent_inode(inode, inode, &dentry->d_name)) { |
f0947e5c JK |
120 | dput(dentry); |
121 | return 0; | |
122 | } | |
354a3399 | 123 | |
f0947e5c JK |
124 | *pino = parent_ino(dentry); |
125 | dput(dentry); | |
354a3399 JK |
126 | return 1; |
127 | } | |
128 | ||
9d1589ef CY |
129 | static inline bool need_do_checkpoint(struct inode *inode) |
130 | { | |
4081363f | 131 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
9d1589ef CY |
132 | bool need_cp = false; |
133 | ||
134 | if (!S_ISREG(inode->i_mode) || inode->i_nlink != 1) | |
135 | need_cp = true; | |
e7d55452 JK |
136 | else if (file_enc_name(inode) && need_dentry_mark(sbi, inode->i_ino)) |
137 | need_cp = true; | |
9d1589ef CY |
138 | else if (file_wrong_pino(inode)) |
139 | need_cp = true; | |
140 | else if (!space_for_roll_forward(sbi)) | |
141 | need_cp = true; | |
142 | else if (!is_checkpointed_node(sbi, F2FS_I(inode)->i_pino)) | |
143 | need_cp = true; | |
144 | else if (F2FS_I(inode)->xattr_ver == cur_cp_version(F2FS_CKPT(sbi))) | |
145 | need_cp = true; | |
d5053a34 JK |
146 | else if (test_opt(sbi, FASTBOOT)) |
147 | need_cp = true; | |
a344b9fd JK |
148 | else if (sbi->active_logs == 2) |
149 | need_cp = true; | |
9d1589ef CY |
150 | |
151 | return need_cp; | |
152 | } | |
153 | ||
9c7bb702 CL |
154 | static bool need_inode_page_update(struct f2fs_sb_info *sbi, nid_t ino) |
155 | { | |
156 | struct page *i = find_get_page(NODE_MAPPING(sbi), ino); | |
157 | bool ret = false; | |
158 | /* But we need to avoid that there are some inode updates */ | |
159 | if ((i && PageDirty(i)) || need_inode_block_update(sbi, ino)) | |
160 | ret = true; | |
161 | f2fs_put_page(i, 0); | |
162 | return ret; | |
163 | } | |
164 | ||
51455b19 CL |
165 | static void try_to_fix_pino(struct inode *inode) |
166 | { | |
167 | struct f2fs_inode_info *fi = F2FS_I(inode); | |
168 | nid_t pino; | |
169 | ||
170 | down_write(&fi->i_sem); | |
171 | fi->xattr_ver = 0; | |
172 | if (file_wrong_pino(inode) && inode->i_nlink == 1 && | |
173 | get_parent_ino(inode, &pino)) { | |
174 | fi->i_pino = pino; | |
175 | file_got_pino(inode); | |
176 | up_write(&fi->i_sem); | |
177 | ||
178 | mark_inode_dirty_sync(inode); | |
179 | f2fs_write_inode(inode, NULL); | |
180 | } else { | |
181 | up_write(&fi->i_sem); | |
182 | } | |
183 | } | |
184 | ||
608514de JK |
185 | static int f2fs_do_sync_file(struct file *file, loff_t start, loff_t end, |
186 | int datasync, bool atomic) | |
fbfa2cc5 JK |
187 | { |
188 | struct inode *inode = file->f_mapping->host; | |
4081363f | 189 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
2403c155 | 190 | nid_t ino = inode->i_ino; |
fbfa2cc5 JK |
191 | int ret = 0; |
192 | bool need_cp = false; | |
193 | struct writeback_control wbc = { | |
c81bf1c8 | 194 | .sync_mode = WB_SYNC_ALL, |
fbfa2cc5 JK |
195 | .nr_to_write = LONG_MAX, |
196 | .for_reclaim = 0, | |
197 | }; | |
198 | ||
6bacf52f | 199 | if (unlikely(f2fs_readonly(inode->i_sb))) |
1fa95b0b NJ |
200 | return 0; |
201 | ||
a2a4a7e4 | 202 | trace_f2fs_sync_file_enter(inode); |
ea1aa12c JK |
203 | |
204 | /* if fdatasync is triggered, let's do in-place-update */ | |
c46a155b | 205 | if (datasync || get_dirty_pages(inode) <= SM_I(sbi)->min_fsync_blocks) |
91942321 | 206 | set_inode_flag(inode, FI_NEED_IPU); |
fbfa2cc5 | 207 | ret = filemap_write_and_wait_range(inode->i_mapping, start, end); |
91942321 | 208 | clear_inode_flag(inode, FI_NEED_IPU); |
c1ce1b02 | 209 | |
a2a4a7e4 NJ |
210 | if (ret) { |
211 | trace_f2fs_sync_file_exit(inode, need_cp, datasync, ret); | |
fbfa2cc5 | 212 | return ret; |
a2a4a7e4 | 213 | } |
fbfa2cc5 | 214 | |
9c7bb702 | 215 | /* if the inode is dirty, let's recover all the time */ |
2286c020 JK |
216 | if (!datasync) { |
217 | f2fs_write_inode(inode, NULL); | |
9c7bb702 CL |
218 | goto go_write; |
219 | } | |
220 | ||
6d99ba41 JK |
221 | /* |
222 | * if there is no written data, don't waste time to write recovery info. | |
223 | */ | |
91942321 | 224 | if (!is_inode_flag_set(inode, FI_APPEND_WRITE) && |
2403c155 | 225 | !exist_written_data(sbi, ino, APPEND_INO)) { |
19c9c466 | 226 | |
9c7bb702 CL |
227 | /* it may call write_inode just prior to fsync */ |
228 | if (need_inode_page_update(sbi, ino)) | |
19c9c466 | 229 | goto go_write; |
19c9c466 | 230 | |
91942321 | 231 | if (is_inode_flag_set(inode, FI_UPDATE_WRITE) || |
2403c155 | 232 | exist_written_data(sbi, ino, UPDATE_INO)) |
6d99ba41 JK |
233 | goto flush_out; |
234 | goto out; | |
235 | } | |
19c9c466 | 236 | go_write: |
e5d2385e JK |
237 | /* |
238 | * Both of fdatasync() and fsync() are able to be recovered from | |
239 | * sudden-power-off. | |
240 | */ | |
91942321 | 241 | down_read(&F2FS_I(inode)->i_sem); |
9d1589ef | 242 | need_cp = need_do_checkpoint(inode); |
91942321 | 243 | up_read(&F2FS_I(inode)->i_sem); |
d928bfbf | 244 | |
fbfa2cc5 JK |
245 | if (need_cp) { |
246 | /* all the dirty node pages should be flushed for POR */ | |
247 | ret = f2fs_sync_fs(inode->i_sb, 1); | |
d928bfbf | 248 | |
51455b19 CL |
249 | /* |
250 | * We've secured consistency through sync_fs. Following pino | |
251 | * will be used only for fsynced inodes after checkpoint. | |
252 | */ | |
253 | try_to_fix_pino(inode); | |
91942321 JK |
254 | clear_inode_flag(inode, FI_APPEND_WRITE); |
255 | clear_inode_flag(inode, FI_UPDATE_WRITE); | |
51455b19 CL |
256 | goto out; |
257 | } | |
88bd02c9 | 258 | sync_nodes: |
608514de | 259 | ret = fsync_node_pages(sbi, ino, &wbc, atomic); |
c267ec15 JK |
260 | if (ret) |
261 | goto out; | |
51455b19 | 262 | |
871f599f | 263 | /* if cp_error was enabled, we should avoid infinite loop */ |
6d5a1495 CY |
264 | if (unlikely(f2fs_cp_error(sbi))) { |
265 | ret = -EIO; | |
871f599f | 266 | goto out; |
6d5a1495 | 267 | } |
871f599f | 268 | |
51455b19 CL |
269 | if (need_inode_block_update(sbi, ino)) { |
270 | mark_inode_dirty_sync(inode); | |
271 | f2fs_write_inode(inode, NULL); | |
272 | goto sync_nodes; | |
fbfa2cc5 | 273 | } |
51455b19 CL |
274 | |
275 | ret = wait_on_node_pages_writeback(sbi, ino); | |
276 | if (ret) | |
277 | goto out; | |
278 | ||
279 | /* once recovery info is written, don't need to tack this */ | |
a49324f1 | 280 | remove_ino_entry(sbi, ino, APPEND_INO); |
91942321 | 281 | clear_inode_flag(inode, FI_APPEND_WRITE); |
51455b19 | 282 | flush_out: |
a49324f1 | 283 | remove_ino_entry(sbi, ino, UPDATE_INO); |
91942321 | 284 | clear_inode_flag(inode, FI_UPDATE_WRITE); |
51455b19 | 285 | ret = f2fs_issue_flush(sbi); |
d0239e1b | 286 | f2fs_update_time(sbi, REQ_TIME); |
fbfa2cc5 | 287 | out: |
a2a4a7e4 | 288 | trace_f2fs_sync_file_exit(inode, need_cp, datasync, ret); |
05ca3632 | 289 | f2fs_trace_ios(NULL, 1); |
fbfa2cc5 JK |
290 | return ret; |
291 | } | |
292 | ||
608514de JK |
293 | int f2fs_sync_file(struct file *file, loff_t start, loff_t end, int datasync) |
294 | { | |
295 | return f2fs_do_sync_file(file, start, end, datasync, false); | |
296 | } | |
297 | ||
7f7670fe JK |
298 | static pgoff_t __get_first_dirty_index(struct address_space *mapping, |
299 | pgoff_t pgofs, int whence) | |
300 | { | |
301 | struct pagevec pvec; | |
302 | int nr_pages; | |
303 | ||
304 | if (whence != SEEK_DATA) | |
305 | return 0; | |
306 | ||
307 | /* find first dirty page index */ | |
308 | pagevec_init(&pvec, 0); | |
65b85ccc JK |
309 | nr_pages = pagevec_lookup_tag(&pvec, mapping, &pgofs, |
310 | PAGECACHE_TAG_DIRTY, 1); | |
80dd9c0e | 311 | pgofs = nr_pages ? pvec.pages[0]->index : ULONG_MAX; |
7f7670fe JK |
312 | pagevec_release(&pvec); |
313 | return pgofs; | |
314 | } | |
315 | ||
316 | static bool __found_offset(block_t blkaddr, pgoff_t dirty, pgoff_t pgofs, | |
317 | int whence) | |
318 | { | |
319 | switch (whence) { | |
320 | case SEEK_DATA: | |
321 | if ((blkaddr == NEW_ADDR && dirty == pgofs) || | |
322 | (blkaddr != NEW_ADDR && blkaddr != NULL_ADDR)) | |
323 | return true; | |
324 | break; | |
325 | case SEEK_HOLE: | |
326 | if (blkaddr == NULL_ADDR) | |
327 | return true; | |
328 | break; | |
329 | } | |
330 | return false; | |
331 | } | |
332 | ||
267378d4 CY |
333 | static loff_t f2fs_seek_block(struct file *file, loff_t offset, int whence) |
334 | { | |
335 | struct inode *inode = file->f_mapping->host; | |
336 | loff_t maxbytes = inode->i_sb->s_maxbytes; | |
337 | struct dnode_of_data dn; | |
7f7670fe JK |
338 | pgoff_t pgofs, end_offset, dirty; |
339 | loff_t data_ofs = offset; | |
340 | loff_t isize; | |
267378d4 CY |
341 | int err = 0; |
342 | ||
5955102c | 343 | inode_lock(inode); |
267378d4 CY |
344 | |
345 | isize = i_size_read(inode); | |
346 | if (offset >= isize) | |
347 | goto fail; | |
348 | ||
349 | /* handle inline data case */ | |
622f28ae | 350 | if (f2fs_has_inline_data(inode) || f2fs_has_inline_dentry(inode)) { |
267378d4 CY |
351 | if (whence == SEEK_HOLE) |
352 | data_ofs = isize; | |
353 | goto found; | |
354 | } | |
355 | ||
09cbfeaf | 356 | pgofs = (pgoff_t)(offset >> PAGE_SHIFT); |
267378d4 | 357 | |
7f7670fe JK |
358 | dirty = __get_first_dirty_index(inode->i_mapping, pgofs, whence); |
359 | ||
09cbfeaf | 360 | for (; data_ofs < isize; data_ofs = (loff_t)pgofs << PAGE_SHIFT) { |
267378d4 CY |
361 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
362 | err = get_dnode_of_data(&dn, pgofs, LOOKUP_NODE_RA); | |
363 | if (err && err != -ENOENT) { | |
364 | goto fail; | |
365 | } else if (err == -ENOENT) { | |
e1c42045 | 366 | /* direct node does not exists */ |
267378d4 | 367 | if (whence == SEEK_DATA) { |
3cf45747 | 368 | pgofs = get_next_page_offset(&dn, pgofs); |
267378d4 CY |
369 | continue; |
370 | } else { | |
371 | goto found; | |
372 | } | |
373 | } | |
374 | ||
81ca7350 | 375 | end_offset = ADDRS_PER_PAGE(dn.node_page, inode); |
267378d4 CY |
376 | |
377 | /* find data/hole in dnode block */ | |
378 | for (; dn.ofs_in_node < end_offset; | |
379 | dn.ofs_in_node++, pgofs++, | |
09cbfeaf | 380 | data_ofs = (loff_t)pgofs << PAGE_SHIFT) { |
267378d4 CY |
381 | block_t blkaddr; |
382 | blkaddr = datablock_addr(dn.node_page, dn.ofs_in_node); | |
383 | ||
7f7670fe | 384 | if (__found_offset(blkaddr, dirty, pgofs, whence)) { |
267378d4 CY |
385 | f2fs_put_dnode(&dn); |
386 | goto found; | |
387 | } | |
388 | } | |
389 | f2fs_put_dnode(&dn); | |
390 | } | |
391 | ||
392 | if (whence == SEEK_DATA) | |
393 | goto fail; | |
267378d4 | 394 | found: |
fe369bc8 JK |
395 | if (whence == SEEK_HOLE && data_ofs > isize) |
396 | data_ofs = isize; | |
5955102c | 397 | inode_unlock(inode); |
267378d4 CY |
398 | return vfs_setpos(file, data_ofs, maxbytes); |
399 | fail: | |
5955102c | 400 | inode_unlock(inode); |
267378d4 CY |
401 | return -ENXIO; |
402 | } | |
403 | ||
404 | static loff_t f2fs_llseek(struct file *file, loff_t offset, int whence) | |
405 | { | |
406 | struct inode *inode = file->f_mapping->host; | |
407 | loff_t maxbytes = inode->i_sb->s_maxbytes; | |
408 | ||
409 | switch (whence) { | |
410 | case SEEK_SET: | |
411 | case SEEK_CUR: | |
412 | case SEEK_END: | |
413 | return generic_file_llseek_size(file, offset, whence, | |
414 | maxbytes, i_size_read(inode)); | |
415 | case SEEK_DATA: | |
416 | case SEEK_HOLE: | |
0b4c5afd JK |
417 | if (offset < 0) |
418 | return -ENXIO; | |
267378d4 CY |
419 | return f2fs_seek_block(file, offset, whence); |
420 | } | |
421 | ||
422 | return -EINVAL; | |
423 | } | |
424 | ||
fbfa2cc5 JK |
425 | static int f2fs_file_mmap(struct file *file, struct vm_area_struct *vma) |
426 | { | |
b3d208f9 | 427 | struct inode *inode = file_inode(file); |
b9d777b8 | 428 | int err; |
b3d208f9 | 429 | |
fcc85a4d | 430 | if (f2fs_encrypted_inode(inode)) { |
0b81d077 | 431 | err = fscrypt_get_encryption_info(inode); |
fcc85a4d JK |
432 | if (err) |
433 | return 0; | |
ae108668 CY |
434 | if (!f2fs_encrypted_inode(inode)) |
435 | return -ENOKEY; | |
fcc85a4d JK |
436 | } |
437 | ||
b3d208f9 | 438 | /* we don't need to use inline_data strictly */ |
b9d777b8 JK |
439 | err = f2fs_convert_inline_inode(inode); |
440 | if (err) | |
441 | return err; | |
b3d208f9 | 442 | |
fbfa2cc5 JK |
443 | file_accessed(file); |
444 | vma->vm_ops = &f2fs_file_vm_ops; | |
445 | return 0; | |
446 | } | |
447 | ||
fcc85a4d JK |
448 | static int f2fs_file_open(struct inode *inode, struct file *filp) |
449 | { | |
450 | int ret = generic_file_open(inode, filp); | |
33b13951 | 451 | struct dentry *dir; |
fcc85a4d JK |
452 | |
453 | if (!ret && f2fs_encrypted_inode(inode)) { | |
0b81d077 | 454 | ret = fscrypt_get_encryption_info(inode); |
fcc85a4d | 455 | if (ret) |
ae108668 | 456 | return -EACCES; |
0b81d077 | 457 | if (!fscrypt_has_encryption_key(inode)) |
ae108668 | 458 | return -ENOKEY; |
fcc85a4d | 459 | } |
33b13951 JK |
460 | dir = dget_parent(file_dentry(filp)); |
461 | if (f2fs_encrypted_inode(d_inode(dir)) && | |
462 | !fscrypt_has_permitted_context(d_inode(dir), inode)) { | |
463 | dput(dir); | |
8074bb51 | 464 | return -EPERM; |
33b13951 JK |
465 | } |
466 | dput(dir); | |
fcc85a4d JK |
467 | return ret; |
468 | } | |
469 | ||
b292dcab | 470 | int truncate_data_blocks_range(struct dnode_of_data *dn, int count) |
fbfa2cc5 | 471 | { |
4081363f | 472 | struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); |
fbfa2cc5 | 473 | struct f2fs_node *raw_node; |
19b2c30d | 474 | int nr_free = 0, ofs = dn->ofs_in_node, len = count; |
fbfa2cc5 JK |
475 | __le32 *addr; |
476 | ||
45590710 | 477 | raw_node = F2FS_NODE(dn->node_page); |
fbfa2cc5 JK |
478 | addr = blkaddr_in_node(raw_node) + ofs; |
479 | ||
6c311ec6 | 480 | for (; count > 0; count--, addr++, dn->ofs_in_node++) { |
fbfa2cc5 JK |
481 | block_t blkaddr = le32_to_cpu(*addr); |
482 | if (blkaddr == NULL_ADDR) | |
483 | continue; | |
484 | ||
e1509cf2 | 485 | dn->data_blkaddr = NULL_ADDR; |
216a620a | 486 | set_data_blkaddr(dn); |
fbfa2cc5 | 487 | invalidate_blocks(sbi, blkaddr); |
3c6c2beb | 488 | if (dn->ofs_in_node == 0 && IS_INODE(dn->node_page)) |
91942321 | 489 | clear_inode_flag(dn->inode, FI_FIRST_BLOCK_WRITTEN); |
fbfa2cc5 JK |
490 | nr_free++; |
491 | } | |
19b2c30d | 492 | |
fbfa2cc5 | 493 | if (nr_free) { |
19b2c30d CY |
494 | pgoff_t fofs; |
495 | /* | |
496 | * once we invalidate valid blkaddr in range [ofs, ofs + count], | |
497 | * we will invalidate all blkaddr in the whole range. | |
498 | */ | |
499 | fofs = start_bidx_of_node(ofs_of_node(dn->node_page), | |
81ca7350 | 500 | dn->inode) + ofs; |
19b2c30d | 501 | f2fs_update_extent_cache_range(dn, fofs, 0, len); |
d7cc950b | 502 | dec_valid_block_count(sbi, dn->inode, nr_free); |
fbfa2cc5 JK |
503 | sync_inode_page(dn); |
504 | } | |
505 | dn->ofs_in_node = ofs; | |
51dd6249 | 506 | |
d0239e1b | 507 | f2fs_update_time(sbi, REQ_TIME); |
51dd6249 NJ |
508 | trace_f2fs_truncate_data_blocks_range(dn->inode, dn->nid, |
509 | dn->ofs_in_node, nr_free); | |
fbfa2cc5 JK |
510 | return nr_free; |
511 | } | |
512 | ||
513 | void truncate_data_blocks(struct dnode_of_data *dn) | |
514 | { | |
515 | truncate_data_blocks_range(dn, ADDRS_PER_BLOCK); | |
516 | } | |
517 | ||
0bfcfcca | 518 | static int truncate_partial_data_page(struct inode *inode, u64 from, |
43f3eae1 | 519 | bool cache_only) |
fbfa2cc5 | 520 | { |
09cbfeaf KS |
521 | unsigned offset = from & (PAGE_SIZE - 1); |
522 | pgoff_t index = from >> PAGE_SHIFT; | |
43f3eae1 | 523 | struct address_space *mapping = inode->i_mapping; |
fbfa2cc5 JK |
524 | struct page *page; |
525 | ||
43f3eae1 | 526 | if (!offset && !cache_only) |
b3d208f9 | 527 | return 0; |
fbfa2cc5 | 528 | |
43f3eae1 | 529 | if (cache_only) { |
a56c7c6f | 530 | page = f2fs_grab_cache_page(mapping, index, false); |
43f3eae1 JK |
531 | if (page && PageUptodate(page)) |
532 | goto truncate_out; | |
533 | f2fs_put_page(page, 1); | |
b3d208f9 | 534 | return 0; |
43f3eae1 | 535 | } |
fbfa2cc5 | 536 | |
a56c7c6f | 537 | page = get_lock_data_page(inode, index, true); |
43f3eae1 JK |
538 | if (IS_ERR(page)) |
539 | return 0; | |
540 | truncate_out: | |
fec1d657 | 541 | f2fs_wait_on_page_writeback(page, DATA, true); |
09cbfeaf | 542 | zero_user(page, offset, PAGE_SIZE - offset); |
0b81d077 JK |
543 | if (!cache_only || !f2fs_encrypted_inode(inode) || |
544 | !S_ISREG(inode->i_mode)) | |
0bfcfcca | 545 | set_page_dirty(page); |
fbfa2cc5 | 546 | f2fs_put_page(page, 1); |
b3d208f9 | 547 | return 0; |
fbfa2cc5 JK |
548 | } |
549 | ||
764aa3e9 | 550 | int truncate_blocks(struct inode *inode, u64 from, bool lock) |
fbfa2cc5 | 551 | { |
4081363f | 552 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
fbfa2cc5 JK |
553 | unsigned int blocksize = inode->i_sb->s_blocksize; |
554 | struct dnode_of_data dn; | |
555 | pgoff_t free_from; | |
9ffe0fb5 | 556 | int count = 0, err = 0; |
b3d208f9 | 557 | struct page *ipage; |
0bfcfcca | 558 | bool truncate_page = false; |
fbfa2cc5 | 559 | |
51dd6249 NJ |
560 | trace_f2fs_truncate_blocks_enter(inode, from); |
561 | ||
f7ef9b83 | 562 | free_from = (pgoff_t)F2FS_BYTES_TO_BLK(from + blocksize - 1); |
fbfa2cc5 | 563 | |
09210c97 CY |
564 | if (free_from >= sbi->max_file_blocks) |
565 | goto free_partial; | |
566 | ||
764aa3e9 JK |
567 | if (lock) |
568 | f2fs_lock_op(sbi); | |
9ffe0fb5 | 569 | |
b3d208f9 JK |
570 | ipage = get_node_page(sbi, inode->i_ino); |
571 | if (IS_ERR(ipage)) { | |
572 | err = PTR_ERR(ipage); | |
573 | goto out; | |
574 | } | |
575 | ||
576 | if (f2fs_has_inline_data(inode)) { | |
0bfcfcca CY |
577 | if (truncate_inline_inode(ipage, from)) |
578 | set_page_dirty(ipage); | |
b3d208f9 | 579 | f2fs_put_page(ipage, 1); |
0bfcfcca | 580 | truncate_page = true; |
b3d208f9 JK |
581 | goto out; |
582 | } | |
583 | ||
584 | set_new_dnode(&dn, inode, ipage, NULL, 0); | |
79344efb | 585 | err = get_dnode_of_data(&dn, free_from, LOOKUP_NODE_RA); |
fbfa2cc5 JK |
586 | if (err) { |
587 | if (err == -ENOENT) | |
588 | goto free_next; | |
b3d208f9 | 589 | goto out; |
1ce86bf6 JK |
590 | } |
591 | ||
81ca7350 | 592 | count = ADDRS_PER_PAGE(dn.node_page, inode); |
fbfa2cc5 JK |
593 | |
594 | count -= dn.ofs_in_node; | |
9850cf4a | 595 | f2fs_bug_on(sbi, count < 0); |
39936837 | 596 | |
fbfa2cc5 JK |
597 | if (dn.ofs_in_node || IS_INODE(dn.node_page)) { |
598 | truncate_data_blocks_range(&dn, count); | |
599 | free_from += count; | |
600 | } | |
601 | ||
602 | f2fs_put_dnode(&dn); | |
603 | free_next: | |
604 | err = truncate_inode_blocks(inode, free_from); | |
764d2c80 JK |
605 | out: |
606 | if (lock) | |
607 | f2fs_unlock_op(sbi); | |
09210c97 | 608 | free_partial: |
b3d208f9 JK |
609 | /* lastly zero out the first data page */ |
610 | if (!err) | |
0bfcfcca | 611 | err = truncate_partial_data_page(inode, from, truncate_page); |
fbfa2cc5 | 612 | |
51dd6249 | 613 | trace_f2fs_truncate_blocks_exit(inode, err); |
fbfa2cc5 JK |
614 | return err; |
615 | } | |
616 | ||
b0154891 | 617 | int f2fs_truncate(struct inode *inode, bool lock) |
fbfa2cc5 | 618 | { |
b0154891 CY |
619 | int err; |
620 | ||
fbfa2cc5 JK |
621 | if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) || |
622 | S_ISLNK(inode->i_mode))) | |
b0154891 | 623 | return 0; |
fbfa2cc5 | 624 | |
51dd6249 NJ |
625 | trace_f2fs_truncate(inode); |
626 | ||
92dffd01 | 627 | /* we should check inline_data size */ |
b9d777b8 | 628 | if (!f2fs_may_inline_data(inode)) { |
b0154891 CY |
629 | err = f2fs_convert_inline_inode(inode); |
630 | if (err) | |
631 | return err; | |
92dffd01 JK |
632 | } |
633 | ||
b0154891 CY |
634 | err = truncate_blocks(inode, i_size_read(inode), lock); |
635 | if (err) | |
636 | return err; | |
637 | ||
638 | inode->i_mtime = inode->i_ctime = CURRENT_TIME; | |
639 | mark_inode_dirty(inode); | |
640 | return 0; | |
fbfa2cc5 JK |
641 | } |
642 | ||
2d4d9fb5 | 643 | int f2fs_getattr(struct vfsmount *mnt, |
fbfa2cc5 JK |
644 | struct dentry *dentry, struct kstat *stat) |
645 | { | |
2b0143b5 | 646 | struct inode *inode = d_inode(dentry); |
fbfa2cc5 JK |
647 | generic_fillattr(inode, stat); |
648 | stat->blocks <<= 3; | |
649 | return 0; | |
650 | } | |
651 | ||
652 | #ifdef CONFIG_F2FS_FS_POSIX_ACL | |
653 | static void __setattr_copy(struct inode *inode, const struct iattr *attr) | |
654 | { | |
fbfa2cc5 JK |
655 | unsigned int ia_valid = attr->ia_valid; |
656 | ||
657 | if (ia_valid & ATTR_UID) | |
658 | inode->i_uid = attr->ia_uid; | |
659 | if (ia_valid & ATTR_GID) | |
660 | inode->i_gid = attr->ia_gid; | |
661 | if (ia_valid & ATTR_ATIME) | |
662 | inode->i_atime = timespec_trunc(attr->ia_atime, | |
663 | inode->i_sb->s_time_gran); | |
664 | if (ia_valid & ATTR_MTIME) | |
665 | inode->i_mtime = timespec_trunc(attr->ia_mtime, | |
666 | inode->i_sb->s_time_gran); | |
667 | if (ia_valid & ATTR_CTIME) | |
668 | inode->i_ctime = timespec_trunc(attr->ia_ctime, | |
669 | inode->i_sb->s_time_gran); | |
670 | if (ia_valid & ATTR_MODE) { | |
671 | umode_t mode = attr->ia_mode; | |
672 | ||
673 | if (!in_group_p(inode->i_gid) && !capable(CAP_FSETID)) | |
674 | mode &= ~S_ISGID; | |
91942321 | 675 | set_acl_inode(inode, mode); |
fbfa2cc5 JK |
676 | } |
677 | } | |
678 | #else | |
679 | #define __setattr_copy setattr_copy | |
680 | #endif | |
681 | ||
682 | int f2fs_setattr(struct dentry *dentry, struct iattr *attr) | |
683 | { | |
2b0143b5 | 684 | struct inode *inode = d_inode(dentry); |
fbfa2cc5 JK |
685 | int err; |
686 | ||
687 | err = inode_change_ok(inode, attr); | |
688 | if (err) | |
689 | return err; | |
690 | ||
09db6a2e | 691 | if (attr->ia_valid & ATTR_SIZE) { |
fcc85a4d | 692 | if (f2fs_encrypted_inode(inode) && |
0b81d077 | 693 | fscrypt_get_encryption_info(inode)) |
fcc85a4d JK |
694 | return -EACCES; |
695 | ||
3c454145 | 696 | if (attr->ia_size <= i_size_read(inode)) { |
09db6a2e | 697 | truncate_setsize(inode, attr->ia_size); |
b0154891 CY |
698 | err = f2fs_truncate(inode, true); |
699 | if (err) | |
700 | return err; | |
2c4db1a6 | 701 | f2fs_balance_fs(F2FS_I_SB(inode), true); |
09db6a2e CY |
702 | } else { |
703 | /* | |
3c454145 CY |
704 | * do not trim all blocks after i_size if target size is |
705 | * larger than i_size. | |
09db6a2e | 706 | */ |
3c454145 | 707 | truncate_setsize(inode, attr->ia_size); |
0cab80ee CY |
708 | |
709 | /* should convert inline inode here */ | |
b9d777b8 | 710 | if (!f2fs_may_inline_data(inode)) { |
0cab80ee CY |
711 | err = f2fs_convert_inline_inode(inode); |
712 | if (err) | |
713 | return err; | |
714 | } | |
345a6b2e | 715 | inode->i_mtime = inode->i_ctime = CURRENT_TIME; |
09db6a2e | 716 | } |
fbfa2cc5 JK |
717 | } |
718 | ||
719 | __setattr_copy(inode, attr); | |
720 | ||
721 | if (attr->ia_valid & ATTR_MODE) { | |
a6dda0e6 | 722 | err = posix_acl_chmod(inode, get_inode_mode(inode)); |
91942321 JK |
723 | if (err || is_inode_flag_set(inode, FI_ACL_MODE)) { |
724 | inode->i_mode = F2FS_I(inode)->i_acl_mode; | |
725 | clear_inode_flag(inode, FI_ACL_MODE); | |
fbfa2cc5 JK |
726 | } |
727 | } | |
728 | ||
729 | mark_inode_dirty(inode); | |
730 | return err; | |
731 | } | |
732 | ||
733 | const struct inode_operations f2fs_file_inode_operations = { | |
734 | .getattr = f2fs_getattr, | |
735 | .setattr = f2fs_setattr, | |
736 | .get_acl = f2fs_get_acl, | |
a6dda0e6 | 737 | .set_acl = f2fs_set_acl, |
fbfa2cc5 JK |
738 | #ifdef CONFIG_F2FS_FS_XATTR |
739 | .setxattr = generic_setxattr, | |
740 | .getxattr = generic_getxattr, | |
741 | .listxattr = f2fs_listxattr, | |
742 | .removexattr = generic_removexattr, | |
743 | #endif | |
9ab70134 | 744 | .fiemap = f2fs_fiemap, |
fbfa2cc5 JK |
745 | }; |
746 | ||
6394328a | 747 | static int fill_zero(struct inode *inode, pgoff_t index, |
fbfa2cc5 JK |
748 | loff_t start, loff_t len) |
749 | { | |
4081363f | 750 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
fbfa2cc5 JK |
751 | struct page *page; |
752 | ||
753 | if (!len) | |
6394328a | 754 | return 0; |
fbfa2cc5 | 755 | |
2c4db1a6 | 756 | f2fs_balance_fs(sbi, true); |
bd43df02 | 757 | |
e479556b | 758 | f2fs_lock_op(sbi); |
64aa7ed9 | 759 | page = get_new_data_page(inode, NULL, index, false); |
e479556b | 760 | f2fs_unlock_op(sbi); |
fbfa2cc5 | 761 | |
6394328a CY |
762 | if (IS_ERR(page)) |
763 | return PTR_ERR(page); | |
764 | ||
fec1d657 | 765 | f2fs_wait_on_page_writeback(page, DATA, true); |
6394328a CY |
766 | zero_user(page, start, len); |
767 | set_page_dirty(page); | |
768 | f2fs_put_page(page, 1); | |
769 | return 0; | |
fbfa2cc5 JK |
770 | } |
771 | ||
772 | int truncate_hole(struct inode *inode, pgoff_t pg_start, pgoff_t pg_end) | |
773 | { | |
fbfa2cc5 JK |
774 | int err; |
775 | ||
ea58711e | 776 | while (pg_start < pg_end) { |
fbfa2cc5 | 777 | struct dnode_of_data dn; |
ea58711e | 778 | pgoff_t end_offset, count; |
9eaeba70 | 779 | |
fbfa2cc5 | 780 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
ea58711e | 781 | err = get_dnode_of_data(&dn, pg_start, LOOKUP_NODE); |
fbfa2cc5 | 782 | if (err) { |
ea58711e CY |
783 | if (err == -ENOENT) { |
784 | pg_start++; | |
fbfa2cc5 | 785 | continue; |
ea58711e | 786 | } |
fbfa2cc5 JK |
787 | return err; |
788 | } | |
789 | ||
81ca7350 | 790 | end_offset = ADDRS_PER_PAGE(dn.node_page, inode); |
ea58711e CY |
791 | count = min(end_offset - dn.ofs_in_node, pg_end - pg_start); |
792 | ||
793 | f2fs_bug_on(F2FS_I_SB(inode), count == 0 || count > end_offset); | |
794 | ||
795 | truncate_data_blocks_range(&dn, count); | |
fbfa2cc5 | 796 | f2fs_put_dnode(&dn); |
ea58711e CY |
797 | |
798 | pg_start += count; | |
fbfa2cc5 JK |
799 | } |
800 | return 0; | |
801 | } | |
802 | ||
a66c7b2f | 803 | static int punch_hole(struct inode *inode, loff_t offset, loff_t len) |
fbfa2cc5 JK |
804 | { |
805 | pgoff_t pg_start, pg_end; | |
806 | loff_t off_start, off_end; | |
b9d777b8 | 807 | int ret; |
fbfa2cc5 | 808 | |
b9d777b8 JK |
809 | ret = f2fs_convert_inline_inode(inode); |
810 | if (ret) | |
811 | return ret; | |
9ffe0fb5 | 812 | |
09cbfeaf KS |
813 | pg_start = ((unsigned long long) offset) >> PAGE_SHIFT; |
814 | pg_end = ((unsigned long long) offset + len) >> PAGE_SHIFT; | |
fbfa2cc5 | 815 | |
09cbfeaf KS |
816 | off_start = offset & (PAGE_SIZE - 1); |
817 | off_end = (offset + len) & (PAGE_SIZE - 1); | |
fbfa2cc5 JK |
818 | |
819 | if (pg_start == pg_end) { | |
6394328a | 820 | ret = fill_zero(inode, pg_start, off_start, |
fbfa2cc5 | 821 | off_end - off_start); |
6394328a CY |
822 | if (ret) |
823 | return ret; | |
fbfa2cc5 | 824 | } else { |
6394328a CY |
825 | if (off_start) { |
826 | ret = fill_zero(inode, pg_start++, off_start, | |
09cbfeaf | 827 | PAGE_SIZE - off_start); |
6394328a CY |
828 | if (ret) |
829 | return ret; | |
830 | } | |
831 | if (off_end) { | |
832 | ret = fill_zero(inode, pg_end, 0, off_end); | |
833 | if (ret) | |
834 | return ret; | |
835 | } | |
fbfa2cc5 JK |
836 | |
837 | if (pg_start < pg_end) { | |
838 | struct address_space *mapping = inode->i_mapping; | |
839 | loff_t blk_start, blk_end; | |
4081363f | 840 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
1127a3d4 | 841 | |
2c4db1a6 | 842 | f2fs_balance_fs(sbi, true); |
fbfa2cc5 | 843 | |
09cbfeaf KS |
844 | blk_start = (loff_t)pg_start << PAGE_SHIFT; |
845 | blk_end = (loff_t)pg_end << PAGE_SHIFT; | |
fbfa2cc5 JK |
846 | truncate_inode_pages_range(mapping, blk_start, |
847 | blk_end - 1); | |
39936837 | 848 | |
e479556b | 849 | f2fs_lock_op(sbi); |
fbfa2cc5 | 850 | ret = truncate_hole(inode, pg_start, pg_end); |
e479556b | 851 | f2fs_unlock_op(sbi); |
fbfa2cc5 JK |
852 | } |
853 | } | |
854 | ||
fbfa2cc5 JK |
855 | return ret; |
856 | } | |
857 | ||
6e2c64ad JK |
858 | static int __exchange_data_block(struct inode *inode, pgoff_t src, |
859 | pgoff_t dst, bool full) | |
b4ace337 CY |
860 | { |
861 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
862 | struct dnode_of_data dn; | |
6e2c64ad JK |
863 | block_t new_addr; |
864 | bool do_replace = false; | |
865 | int ret; | |
ecbaa406 | 866 | |
6e2c64ad JK |
867 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
868 | ret = get_dnode_of_data(&dn, src, LOOKUP_NODE_RA); | |
869 | if (ret && ret != -ENOENT) { | |
870 | return ret; | |
871 | } else if (ret == -ENOENT) { | |
872 | new_addr = NULL_ADDR; | |
873 | } else { | |
874 | new_addr = dn.data_blkaddr; | |
875 | if (!is_checkpointed_data(sbi, new_addr)) { | |
6e2c64ad | 876 | /* do not invalidate this block address */ |
f28b3434 | 877 | f2fs_update_data_blkaddr(&dn, NULL_ADDR); |
6e2c64ad | 878 | do_replace = true; |
b4ace337 | 879 | } |
6e2c64ad JK |
880 | f2fs_put_dnode(&dn); |
881 | } | |
b4ace337 | 882 | |
6e2c64ad JK |
883 | if (new_addr == NULL_ADDR) |
884 | return full ? truncate_hole(inode, dst, dst + 1) : 0; | |
b4ace337 | 885 | |
6e2c64ad JK |
886 | if (do_replace) { |
887 | struct page *ipage = get_node_page(sbi, inode->i_ino); | |
888 | struct node_info ni; | |
b4ace337 | 889 | |
6e2c64ad JK |
890 | if (IS_ERR(ipage)) { |
891 | ret = PTR_ERR(ipage); | |
892 | goto err_out; | |
893 | } | |
b4ace337 | 894 | |
6e2c64ad JK |
895 | set_new_dnode(&dn, inode, ipage, NULL, 0); |
896 | ret = f2fs_reserve_block(&dn, dst); | |
897 | if (ret) | |
898 | goto err_out; | |
b4ace337 | 899 | |
6e2c64ad | 900 | truncate_data_blocks_range(&dn, 1); |
b4ace337 | 901 | |
6e2c64ad JK |
902 | get_node_info(sbi, dn.nid, &ni); |
903 | f2fs_replace_block(sbi, &dn, dn.data_blkaddr, new_addr, | |
28bc106b | 904 | ni.version, true, false); |
6e2c64ad JK |
905 | f2fs_put_dnode(&dn); |
906 | } else { | |
907 | struct page *psrc, *pdst; | |
908 | ||
a56c7c6f | 909 | psrc = get_lock_data_page(inode, src, true); |
6e2c64ad JK |
910 | if (IS_ERR(psrc)) |
911 | return PTR_ERR(psrc); | |
8ef2af45 | 912 | pdst = get_new_data_page(inode, NULL, dst, true); |
6e2c64ad JK |
913 | if (IS_ERR(pdst)) { |
914 | f2fs_put_page(psrc, 1); | |
915 | return PTR_ERR(pdst); | |
916 | } | |
917 | f2fs_copy_page(psrc, pdst); | |
918 | set_page_dirty(pdst); | |
919 | f2fs_put_page(pdst, 1); | |
920 | f2fs_put_page(psrc, 1); | |
b4ace337 | 921 | |
6e2c64ad JK |
922 | return truncate_hole(inode, src, src + 1); |
923 | } | |
924 | return 0; | |
b4ace337 | 925 | |
6e2c64ad JK |
926 | err_out: |
927 | if (!get_dnode_of_data(&dn, src, LOOKUP_NODE)) { | |
f28b3434 | 928 | f2fs_update_data_blkaddr(&dn, new_addr); |
6e2c64ad JK |
929 | f2fs_put_dnode(&dn); |
930 | } | |
931 | return ret; | |
932 | } | |
b4ace337 | 933 | |
6e2c64ad JK |
934 | static int f2fs_do_collapse(struct inode *inode, pgoff_t start, pgoff_t end) |
935 | { | |
936 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
937 | pgoff_t nrpages = (i_size_read(inode) + PAGE_SIZE - 1) / PAGE_SIZE; | |
938 | int ret = 0; | |
939 | ||
940 | for (; end < nrpages; start++, end++) { | |
2c4db1a6 | 941 | f2fs_balance_fs(sbi, true); |
6e2c64ad JK |
942 | f2fs_lock_op(sbi); |
943 | ret = __exchange_data_block(inode, end, start, true); | |
ecbaa406 | 944 | f2fs_unlock_op(sbi); |
6e2c64ad JK |
945 | if (ret) |
946 | break; | |
b4ace337 | 947 | } |
b4ace337 CY |
948 | return ret; |
949 | } | |
950 | ||
951 | static int f2fs_collapse_range(struct inode *inode, loff_t offset, loff_t len) | |
952 | { | |
953 | pgoff_t pg_start, pg_end; | |
954 | loff_t new_size; | |
955 | int ret; | |
956 | ||
b4ace337 CY |
957 | if (offset + len >= i_size_read(inode)) |
958 | return -EINVAL; | |
959 | ||
960 | /* collapse range should be aligned to block size of f2fs. */ | |
961 | if (offset & (F2FS_BLKSIZE - 1) || len & (F2FS_BLKSIZE - 1)) | |
962 | return -EINVAL; | |
963 | ||
b9d777b8 JK |
964 | ret = f2fs_convert_inline_inode(inode); |
965 | if (ret) | |
966 | return ret; | |
97a7b2c2 | 967 | |
09cbfeaf KS |
968 | pg_start = offset >> PAGE_SHIFT; |
969 | pg_end = (offset + len) >> PAGE_SHIFT; | |
b4ace337 CY |
970 | |
971 | /* write out all dirty pages from offset */ | |
972 | ret = filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX); | |
973 | if (ret) | |
974 | return ret; | |
975 | ||
976 | truncate_pagecache(inode, offset); | |
977 | ||
978 | ret = f2fs_do_collapse(inode, pg_start, pg_end); | |
979 | if (ret) | |
980 | return ret; | |
981 | ||
6e2c64ad JK |
982 | /* write out all moved pages, if possible */ |
983 | filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX); | |
984 | truncate_pagecache(inode, offset); | |
985 | ||
b4ace337 | 986 | new_size = i_size_read(inode) - len; |
6e2c64ad | 987 | truncate_pagecache(inode, new_size); |
b4ace337 CY |
988 | |
989 | ret = truncate_blocks(inode, new_size, true); | |
990 | if (!ret) | |
fc9581c8 | 991 | f2fs_i_size_write(inode, new_size); |
b4ace337 CY |
992 | |
993 | return ret; | |
994 | } | |
995 | ||
6e961949 CY |
996 | static int f2fs_do_zero_range(struct dnode_of_data *dn, pgoff_t start, |
997 | pgoff_t end) | |
998 | { | |
999 | struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); | |
1000 | pgoff_t index = start; | |
1001 | unsigned int ofs_in_node = dn->ofs_in_node; | |
1002 | blkcnt_t count = 0; | |
1003 | int ret; | |
1004 | ||
1005 | for (; index < end; index++, dn->ofs_in_node++) { | |
1006 | if (datablock_addr(dn->node_page, dn->ofs_in_node) == NULL_ADDR) | |
1007 | count++; | |
1008 | } | |
1009 | ||
1010 | dn->ofs_in_node = ofs_in_node; | |
1011 | ret = reserve_new_blocks(dn, count); | |
1012 | if (ret) | |
1013 | return ret; | |
1014 | ||
1015 | dn->ofs_in_node = ofs_in_node; | |
1016 | for (index = start; index < end; index++, dn->ofs_in_node++) { | |
1017 | dn->data_blkaddr = | |
1018 | datablock_addr(dn->node_page, dn->ofs_in_node); | |
1019 | /* | |
1020 | * reserve_new_blocks will not guarantee entire block | |
1021 | * allocation. | |
1022 | */ | |
1023 | if (dn->data_blkaddr == NULL_ADDR) { | |
1024 | ret = -ENOSPC; | |
1025 | break; | |
1026 | } | |
1027 | if (dn->data_blkaddr != NEW_ADDR) { | |
1028 | invalidate_blocks(sbi, dn->data_blkaddr); | |
1029 | dn->data_blkaddr = NEW_ADDR; | |
1030 | set_data_blkaddr(dn); | |
1031 | } | |
1032 | } | |
1033 | ||
1034 | f2fs_update_extent_cache_range(dn, start, 0, index - start); | |
1035 | ||
1036 | return ret; | |
1037 | } | |
1038 | ||
75cd4e09 CY |
1039 | static int f2fs_zero_range(struct inode *inode, loff_t offset, loff_t len, |
1040 | int mode) | |
1041 | { | |
1042 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
1043 | struct address_space *mapping = inode->i_mapping; | |
1044 | pgoff_t index, pg_start, pg_end; | |
1045 | loff_t new_size = i_size_read(inode); | |
1046 | loff_t off_start, off_end; | |
1047 | int ret = 0; | |
1048 | ||
75cd4e09 CY |
1049 | ret = inode_newsize_ok(inode, (len + offset)); |
1050 | if (ret) | |
1051 | return ret; | |
1052 | ||
b9d777b8 JK |
1053 | ret = f2fs_convert_inline_inode(inode); |
1054 | if (ret) | |
1055 | return ret; | |
75cd4e09 CY |
1056 | |
1057 | ret = filemap_write_and_wait_range(mapping, offset, offset + len - 1); | |
1058 | if (ret) | |
1059 | return ret; | |
1060 | ||
1061 | truncate_pagecache_range(inode, offset, offset + len - 1); | |
1062 | ||
09cbfeaf KS |
1063 | pg_start = ((unsigned long long) offset) >> PAGE_SHIFT; |
1064 | pg_end = ((unsigned long long) offset + len) >> PAGE_SHIFT; | |
75cd4e09 | 1065 | |
09cbfeaf KS |
1066 | off_start = offset & (PAGE_SIZE - 1); |
1067 | off_end = (offset + len) & (PAGE_SIZE - 1); | |
75cd4e09 CY |
1068 | |
1069 | if (pg_start == pg_end) { | |
6394328a CY |
1070 | ret = fill_zero(inode, pg_start, off_start, |
1071 | off_end - off_start); | |
1072 | if (ret) | |
1073 | return ret; | |
1074 | ||
75cd4e09 CY |
1075 | if (offset + len > new_size) |
1076 | new_size = offset + len; | |
1077 | new_size = max_t(loff_t, new_size, offset + len); | |
1078 | } else { | |
1079 | if (off_start) { | |
6394328a | 1080 | ret = fill_zero(inode, pg_start++, off_start, |
09cbfeaf | 1081 | PAGE_SIZE - off_start); |
6394328a CY |
1082 | if (ret) |
1083 | return ret; | |
1084 | ||
75cd4e09 | 1085 | new_size = max_t(loff_t, new_size, |
09cbfeaf | 1086 | (loff_t)pg_start << PAGE_SHIFT); |
75cd4e09 CY |
1087 | } |
1088 | ||
6e961949 | 1089 | for (index = pg_start; index < pg_end;) { |
75cd4e09 | 1090 | struct dnode_of_data dn; |
6e961949 CY |
1091 | unsigned int end_offset; |
1092 | pgoff_t end; | |
75cd4e09 CY |
1093 | |
1094 | f2fs_lock_op(sbi); | |
1095 | ||
6e961949 CY |
1096 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
1097 | ret = get_dnode_of_data(&dn, index, ALLOC_NODE); | |
75cd4e09 CY |
1098 | if (ret) { |
1099 | f2fs_unlock_op(sbi); | |
1100 | goto out; | |
1101 | } | |
1102 | ||
6e961949 CY |
1103 | end_offset = ADDRS_PER_PAGE(dn.node_page, inode); |
1104 | end = min(pg_end, end_offset - dn.ofs_in_node + index); | |
1105 | ||
1106 | ret = f2fs_do_zero_range(&dn, index, end); | |
75cd4e09 CY |
1107 | f2fs_put_dnode(&dn); |
1108 | f2fs_unlock_op(sbi); | |
6e961949 CY |
1109 | if (ret) |
1110 | goto out; | |
75cd4e09 | 1111 | |
6e961949 | 1112 | index = end; |
75cd4e09 | 1113 | new_size = max_t(loff_t, new_size, |
6e961949 | 1114 | (loff_t)index << PAGE_SHIFT); |
75cd4e09 CY |
1115 | } |
1116 | ||
1117 | if (off_end) { | |
6394328a CY |
1118 | ret = fill_zero(inode, pg_end, 0, off_end); |
1119 | if (ret) | |
1120 | goto out; | |
1121 | ||
75cd4e09 CY |
1122 | new_size = max_t(loff_t, new_size, offset + len); |
1123 | } | |
1124 | } | |
1125 | ||
1126 | out: | |
1127 | if (!(mode & FALLOC_FL_KEEP_SIZE) && i_size_read(inode) < new_size) { | |
fc9581c8 | 1128 | f2fs_i_size_write(inode, new_size); |
75cd4e09 CY |
1129 | update_inode_page(inode); |
1130 | } | |
1131 | ||
1132 | return ret; | |
1133 | } | |
1134 | ||
f62185d0 CY |
1135 | static int f2fs_insert_range(struct inode *inode, loff_t offset, loff_t len) |
1136 | { | |
1137 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
1138 | pgoff_t pg_start, pg_end, delta, nrpages, idx; | |
1139 | loff_t new_size; | |
6e2c64ad | 1140 | int ret = 0; |
f62185d0 | 1141 | |
f62185d0 CY |
1142 | new_size = i_size_read(inode) + len; |
1143 | if (new_size > inode->i_sb->s_maxbytes) | |
1144 | return -EFBIG; | |
1145 | ||
1146 | if (offset >= i_size_read(inode)) | |
1147 | return -EINVAL; | |
1148 | ||
1149 | /* insert range should be aligned to block size of f2fs. */ | |
1150 | if (offset & (F2FS_BLKSIZE - 1) || len & (F2FS_BLKSIZE - 1)) | |
1151 | return -EINVAL; | |
1152 | ||
b9d777b8 JK |
1153 | ret = f2fs_convert_inline_inode(inode); |
1154 | if (ret) | |
1155 | return ret; | |
97a7b2c2 | 1156 | |
2c4db1a6 | 1157 | f2fs_balance_fs(sbi, true); |
2a340760 | 1158 | |
f62185d0 CY |
1159 | ret = truncate_blocks(inode, i_size_read(inode), true); |
1160 | if (ret) | |
1161 | return ret; | |
1162 | ||
1163 | /* write out all dirty pages from offset */ | |
1164 | ret = filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX); | |
1165 | if (ret) | |
1166 | return ret; | |
1167 | ||
1168 | truncate_pagecache(inode, offset); | |
1169 | ||
09cbfeaf KS |
1170 | pg_start = offset >> PAGE_SHIFT; |
1171 | pg_end = (offset + len) >> PAGE_SHIFT; | |
f62185d0 CY |
1172 | delta = pg_end - pg_start; |
1173 | nrpages = (i_size_read(inode) + PAGE_SIZE - 1) / PAGE_SIZE; | |
1174 | ||
1175 | for (idx = nrpages - 1; idx >= pg_start && idx != -1; idx--) { | |
f62185d0 | 1176 | f2fs_lock_op(sbi); |
6e2c64ad | 1177 | ret = __exchange_data_block(inode, idx, idx + delta, false); |
f62185d0 | 1178 | f2fs_unlock_op(sbi); |
6e2c64ad JK |
1179 | if (ret) |
1180 | break; | |
f62185d0 CY |
1181 | } |
1182 | ||
6e2c64ad JK |
1183 | /* write out all moved pages, if possible */ |
1184 | filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX); | |
1185 | truncate_pagecache(inode, offset); | |
1186 | ||
1187 | if (!ret) | |
fc9581c8 | 1188 | f2fs_i_size_write(inode, new_size); |
f62185d0 CY |
1189 | return ret; |
1190 | } | |
1191 | ||
fbfa2cc5 JK |
1192 | static int expand_inode_data(struct inode *inode, loff_t offset, |
1193 | loff_t len, int mode) | |
1194 | { | |
4081363f | 1195 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
e12dd7bd JK |
1196 | struct f2fs_map_blocks map = { .m_next_pgofs = NULL }; |
1197 | pgoff_t pg_end; | |
fbfa2cc5 | 1198 | loff_t new_size = i_size_read(inode); |
e12dd7bd JK |
1199 | loff_t off_end; |
1200 | int ret; | |
fbfa2cc5 JK |
1201 | |
1202 | ret = inode_newsize_ok(inode, (len + offset)); | |
1203 | if (ret) | |
1204 | return ret; | |
1205 | ||
b9d777b8 JK |
1206 | ret = f2fs_convert_inline_inode(inode); |
1207 | if (ret) | |
1208 | return ret; | |
9e09fc85 | 1209 | |
2c4db1a6 | 1210 | f2fs_balance_fs(sbi, true); |
2a340760 | 1211 | |
e12dd7bd | 1212 | pg_end = ((unsigned long long)offset + len) >> PAGE_SHIFT; |
09cbfeaf | 1213 | off_end = (offset + len) & (PAGE_SIZE - 1); |
fbfa2cc5 | 1214 | |
e12dd7bd JK |
1215 | map.m_lblk = ((unsigned long long)offset) >> PAGE_SHIFT; |
1216 | map.m_len = pg_end - map.m_lblk; | |
1217 | if (off_end) | |
1218 | map.m_len++; | |
ead43275 | 1219 | |
e12dd7bd JK |
1220 | ret = f2fs_map_blocks(inode, &map, 1, F2FS_GET_BLOCK_PRE_AIO); |
1221 | if (ret) { | |
1222 | pgoff_t last_off; | |
fbfa2cc5 | 1223 | |
e12dd7bd JK |
1224 | if (!map.m_len) |
1225 | return ret; | |
98397ff3 | 1226 | |
e12dd7bd JK |
1227 | last_off = map.m_lblk + map.m_len - 1; |
1228 | ||
1229 | /* update new size to the failed position */ | |
1230 | new_size = (last_off == pg_end) ? offset + len: | |
1231 | (loff_t)(last_off + 1) << PAGE_SHIFT; | |
1232 | } else { | |
1233 | new_size = ((loff_t)pg_end << PAGE_SHIFT) + off_end; | |
fbfa2cc5 JK |
1234 | } |
1235 | ||
e12dd7bd | 1236 | if (!(mode & FALLOC_FL_KEEP_SIZE) && i_size_read(inode) < new_size) { |
fc9581c8 | 1237 | f2fs_i_size_write(inode, new_size); |
ead43275 | 1238 | update_inode_page(inode); |
fbfa2cc5 JK |
1239 | } |
1240 | ||
1241 | return ret; | |
1242 | } | |
1243 | ||
1244 | static long f2fs_fallocate(struct file *file, int mode, | |
1245 | loff_t offset, loff_t len) | |
1246 | { | |
6131ffaa | 1247 | struct inode *inode = file_inode(file); |
587c0a42 | 1248 | long ret = 0; |
fbfa2cc5 | 1249 | |
c998012b CY |
1250 | /* f2fs only support ->fallocate for regular file */ |
1251 | if (!S_ISREG(inode->i_mode)) | |
1252 | return -EINVAL; | |
1253 | ||
f62185d0 CY |
1254 | if (f2fs_encrypted_inode(inode) && |
1255 | (mode & (FALLOC_FL_COLLAPSE_RANGE | FALLOC_FL_INSERT_RANGE))) | |
fcc85a4d JK |
1256 | return -EOPNOTSUPP; |
1257 | ||
b4ace337 | 1258 | if (mode & ~(FALLOC_FL_KEEP_SIZE | FALLOC_FL_PUNCH_HOLE | |
f62185d0 CY |
1259 | FALLOC_FL_COLLAPSE_RANGE | FALLOC_FL_ZERO_RANGE | |
1260 | FALLOC_FL_INSERT_RANGE)) | |
fbfa2cc5 JK |
1261 | return -EOPNOTSUPP; |
1262 | ||
5955102c | 1263 | inode_lock(inode); |
3375f696 | 1264 | |
587c0a42 TY |
1265 | if (mode & FALLOC_FL_PUNCH_HOLE) { |
1266 | if (offset >= inode->i_size) | |
1267 | goto out; | |
1268 | ||
a66c7b2f | 1269 | ret = punch_hole(inode, offset, len); |
b4ace337 CY |
1270 | } else if (mode & FALLOC_FL_COLLAPSE_RANGE) { |
1271 | ret = f2fs_collapse_range(inode, offset, len); | |
75cd4e09 CY |
1272 | } else if (mode & FALLOC_FL_ZERO_RANGE) { |
1273 | ret = f2fs_zero_range(inode, offset, len, mode); | |
f62185d0 CY |
1274 | } else if (mode & FALLOC_FL_INSERT_RANGE) { |
1275 | ret = f2fs_insert_range(inode, offset, len); | |
b4ace337 | 1276 | } else { |
fbfa2cc5 | 1277 | ret = expand_inode_data(inode, offset, len, mode); |
b4ace337 | 1278 | } |
fbfa2cc5 | 1279 | |
3af60a49 NJ |
1280 | if (!ret) { |
1281 | inode->i_mtime = inode->i_ctime = CURRENT_TIME; | |
1282 | mark_inode_dirty(inode); | |
d0239e1b | 1283 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); |
3af60a49 | 1284 | } |
3375f696 | 1285 | |
587c0a42 | 1286 | out: |
5955102c | 1287 | inode_unlock(inode); |
3375f696 | 1288 | |
c01e2853 | 1289 | trace_f2fs_fallocate(inode, mode, offset, len, ret); |
fbfa2cc5 JK |
1290 | return ret; |
1291 | } | |
1292 | ||
1e84371f JK |
1293 | static int f2fs_release_file(struct inode *inode, struct file *filp) |
1294 | { | |
de5307e4 JK |
1295 | /* |
1296 | * f2fs_relase_file is called at every close calls. So we should | |
1297 | * not drop any inmemory pages by close called by other process. | |
1298 | */ | |
1299 | if (!(filp->f_mode & FMODE_WRITE) || | |
1300 | atomic_read(&inode->i_writecount) != 1) | |
1301 | return 0; | |
1302 | ||
1e84371f JK |
1303 | /* some remained atomic pages should discarded */ |
1304 | if (f2fs_is_atomic_file(inode)) | |
29b96b54 | 1305 | drop_inmem_pages(inode); |
1e84371f | 1306 | if (f2fs_is_volatile_file(inode)) { |
91942321 JK |
1307 | clear_inode_flag(inode, FI_VOLATILE_FILE); |
1308 | set_inode_flag(inode, FI_DROP_CACHE); | |
1e84371f | 1309 | filemap_fdatawrite(inode->i_mapping); |
91942321 | 1310 | clear_inode_flag(inode, FI_DROP_CACHE); |
1e84371f JK |
1311 | } |
1312 | return 0; | |
1313 | } | |
1314 | ||
fbfa2cc5 JK |
1315 | #define F2FS_REG_FLMASK (~(FS_DIRSYNC_FL | FS_TOPDIR_FL)) |
1316 | #define F2FS_OTHER_FLMASK (FS_NODUMP_FL | FS_NOATIME_FL) | |
1317 | ||
1318 | static inline __u32 f2fs_mask_flags(umode_t mode, __u32 flags) | |
1319 | { | |
1320 | if (S_ISDIR(mode)) | |
1321 | return flags; | |
1322 | else if (S_ISREG(mode)) | |
1323 | return flags & F2FS_REG_FLMASK; | |
1324 | else | |
1325 | return flags & F2FS_OTHER_FLMASK; | |
1326 | } | |
1327 | ||
52656e6c | 1328 | static int f2fs_ioc_getflags(struct file *filp, unsigned long arg) |
fbfa2cc5 | 1329 | { |
6131ffaa | 1330 | struct inode *inode = file_inode(filp); |
fbfa2cc5 | 1331 | struct f2fs_inode_info *fi = F2FS_I(inode); |
52656e6c JK |
1332 | unsigned int flags = fi->i_flags & FS_FL_USER_VISIBLE; |
1333 | return put_user(flags, (int __user *)arg); | |
1334 | } | |
fbfa2cc5 | 1335 | |
52656e6c JK |
1336 | static int f2fs_ioc_setflags(struct file *filp, unsigned long arg) |
1337 | { | |
1338 | struct inode *inode = file_inode(filp); | |
1339 | struct f2fs_inode_info *fi = F2FS_I(inode); | |
1340 | unsigned int flags = fi->i_flags & FS_FL_USER_VISIBLE; | |
1341 | unsigned int oldflags; | |
1342 | int ret; | |
fbfa2cc5 | 1343 | |
7fb17fe4 CY |
1344 | if (!inode_owner_or_capable(inode)) |
1345 | return -EACCES; | |
1346 | ||
1347 | if (get_user(flags, (int __user *)arg)) | |
1348 | return -EFAULT; | |
1349 | ||
52656e6c JK |
1350 | ret = mnt_want_write_file(filp); |
1351 | if (ret) | |
1352 | return ret; | |
fbfa2cc5 | 1353 | |
52656e6c | 1354 | flags = f2fs_mask_flags(inode->i_mode, flags); |
fbfa2cc5 | 1355 | |
5955102c | 1356 | inode_lock(inode); |
fbfa2cc5 | 1357 | |
52656e6c | 1358 | oldflags = fi->i_flags; |
fbfa2cc5 | 1359 | |
52656e6c JK |
1360 | if ((flags ^ oldflags) & (FS_APPEND_FL | FS_IMMUTABLE_FL)) { |
1361 | if (!capable(CAP_LINUX_IMMUTABLE)) { | |
5955102c | 1362 | inode_unlock(inode); |
52656e6c JK |
1363 | ret = -EPERM; |
1364 | goto out; | |
fbfa2cc5 | 1365 | } |
52656e6c | 1366 | } |
fbfa2cc5 | 1367 | |
52656e6c JK |
1368 | flags = flags & FS_FL_USER_MODIFIABLE; |
1369 | flags |= oldflags & ~FS_FL_USER_MODIFIABLE; | |
1370 | fi->i_flags = flags; | |
5955102c | 1371 | inode_unlock(inode); |
fbfa2cc5 | 1372 | |
52656e6c JK |
1373 | f2fs_set_inode_flags(inode); |
1374 | inode->i_ctime = CURRENT_TIME; | |
1375 | mark_inode_dirty(inode); | |
fbfa2cc5 | 1376 | out: |
52656e6c JK |
1377 | mnt_drop_write_file(filp); |
1378 | return ret; | |
1379 | } | |
4b2fecc8 | 1380 | |
d49f3e89 CY |
1381 | static int f2fs_ioc_getversion(struct file *filp, unsigned long arg) |
1382 | { | |
1383 | struct inode *inode = file_inode(filp); | |
1384 | ||
1385 | return put_user(inode->i_generation, (int __user *)arg); | |
1386 | } | |
1387 | ||
88b88a66 JK |
1388 | static int f2fs_ioc_start_atomic_write(struct file *filp) |
1389 | { | |
1390 | struct inode *inode = file_inode(filp); | |
f4c9c743 | 1391 | int ret; |
88b88a66 JK |
1392 | |
1393 | if (!inode_owner_or_capable(inode)) | |
1394 | return -EACCES; | |
1395 | ||
7fb17fe4 CY |
1396 | ret = mnt_want_write_file(filp); |
1397 | if (ret) | |
1398 | return ret; | |
1399 | ||
0fac558b CY |
1400 | inode_lock(inode); |
1401 | ||
1e84371f | 1402 | if (f2fs_is_atomic_file(inode)) |
7fb17fe4 | 1403 | goto out; |
88b88a66 | 1404 | |
f4c9c743 CY |
1405 | ret = f2fs_convert_inline_inode(inode); |
1406 | if (ret) | |
7fb17fe4 | 1407 | goto out; |
88b88a66 | 1408 | |
91942321 | 1409 | set_inode_flag(inode, FI_ATOMIC_FILE); |
d0239e1b JK |
1410 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); |
1411 | ||
c27753d6 | 1412 | if (!get_dirty_pages(inode)) |
7fb17fe4 | 1413 | goto out; |
c27753d6 JK |
1414 | |
1415 | f2fs_msg(F2FS_I_SB(inode)->sb, KERN_WARNING, | |
1beba1b3 | 1416 | "Unexpected flush for atomic writes: ino=%lu, npages=%lld", |
c27753d6 JK |
1417 | inode->i_ino, get_dirty_pages(inode)); |
1418 | ret = filemap_write_and_wait_range(inode->i_mapping, 0, LLONG_MAX); | |
1419 | if (ret) | |
91942321 | 1420 | clear_inode_flag(inode, FI_ATOMIC_FILE); |
7fb17fe4 | 1421 | out: |
0fac558b | 1422 | inode_unlock(inode); |
7fb17fe4 | 1423 | mnt_drop_write_file(filp); |
c27753d6 | 1424 | return ret; |
88b88a66 JK |
1425 | } |
1426 | ||
1427 | static int f2fs_ioc_commit_atomic_write(struct file *filp) | |
1428 | { | |
1429 | struct inode *inode = file_inode(filp); | |
1430 | int ret; | |
1431 | ||
1432 | if (!inode_owner_or_capable(inode)) | |
1433 | return -EACCES; | |
1434 | ||
1435 | ret = mnt_want_write_file(filp); | |
1436 | if (ret) | |
1437 | return ret; | |
1438 | ||
0fac558b CY |
1439 | inode_lock(inode); |
1440 | ||
7fb17fe4 CY |
1441 | if (f2fs_is_volatile_file(inode)) |
1442 | goto err_out; | |
1443 | ||
6282adbf | 1444 | if (f2fs_is_atomic_file(inode)) { |
91942321 | 1445 | clear_inode_flag(inode, FI_ATOMIC_FILE); |
29b96b54 | 1446 | ret = commit_inmem_pages(inode); |
447135a8 | 1447 | if (ret) { |
91942321 | 1448 | set_inode_flag(inode, FI_ATOMIC_FILE); |
edb27dee | 1449 | goto err_out; |
447135a8 | 1450 | } |
6282adbf | 1451 | } |
88b88a66 | 1452 | |
608514de | 1453 | ret = f2fs_do_sync_file(filp, 0, LLONG_MAX, 0, true); |
edb27dee | 1454 | err_out: |
0fac558b | 1455 | inode_unlock(inode); |
88b88a66 JK |
1456 | mnt_drop_write_file(filp); |
1457 | return ret; | |
1458 | } | |
1459 | ||
02a1335f JK |
1460 | static int f2fs_ioc_start_volatile_write(struct file *filp) |
1461 | { | |
1462 | struct inode *inode = file_inode(filp); | |
f4c9c743 | 1463 | int ret; |
02a1335f JK |
1464 | |
1465 | if (!inode_owner_or_capable(inode)) | |
1466 | return -EACCES; | |
1467 | ||
7fb17fe4 CY |
1468 | ret = mnt_want_write_file(filp); |
1469 | if (ret) | |
1470 | return ret; | |
1471 | ||
0fac558b CY |
1472 | inode_lock(inode); |
1473 | ||
1e84371f | 1474 | if (f2fs_is_volatile_file(inode)) |
7fb17fe4 | 1475 | goto out; |
1e84371f | 1476 | |
f4c9c743 CY |
1477 | ret = f2fs_convert_inline_inode(inode); |
1478 | if (ret) | |
7fb17fe4 | 1479 | goto out; |
b3d208f9 | 1480 | |
91942321 | 1481 | set_inode_flag(inode, FI_VOLATILE_FILE); |
d0239e1b | 1482 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); |
7fb17fe4 | 1483 | out: |
0fac558b | 1484 | inode_unlock(inode); |
7fb17fe4 CY |
1485 | mnt_drop_write_file(filp); |
1486 | return ret; | |
02a1335f JK |
1487 | } |
1488 | ||
1e84371f JK |
1489 | static int f2fs_ioc_release_volatile_write(struct file *filp) |
1490 | { | |
1491 | struct inode *inode = file_inode(filp); | |
7fb17fe4 | 1492 | int ret; |
1e84371f JK |
1493 | |
1494 | if (!inode_owner_or_capable(inode)) | |
1495 | return -EACCES; | |
1496 | ||
7fb17fe4 CY |
1497 | ret = mnt_want_write_file(filp); |
1498 | if (ret) | |
1499 | return ret; | |
1500 | ||
0fac558b CY |
1501 | inode_lock(inode); |
1502 | ||
1e84371f | 1503 | if (!f2fs_is_volatile_file(inode)) |
7fb17fe4 | 1504 | goto out; |
1e84371f | 1505 | |
7fb17fe4 CY |
1506 | if (!f2fs_is_first_block_written(inode)) { |
1507 | ret = truncate_partial_data_page(inode, 0, true); | |
1508 | goto out; | |
1509 | } | |
3c6c2beb | 1510 | |
7fb17fe4 CY |
1511 | ret = punch_hole(inode, 0, F2FS_BLKSIZE); |
1512 | out: | |
0fac558b | 1513 | inode_unlock(inode); |
7fb17fe4 CY |
1514 | mnt_drop_write_file(filp); |
1515 | return ret; | |
1e84371f JK |
1516 | } |
1517 | ||
1518 | static int f2fs_ioc_abort_volatile_write(struct file *filp) | |
1519 | { | |
1520 | struct inode *inode = file_inode(filp); | |
1521 | int ret; | |
1522 | ||
1523 | if (!inode_owner_or_capable(inode)) | |
1524 | return -EACCES; | |
1525 | ||
1526 | ret = mnt_want_write_file(filp); | |
1527 | if (ret) | |
1528 | return ret; | |
1529 | ||
0fac558b CY |
1530 | inode_lock(inode); |
1531 | ||
26dc3d44 | 1532 | if (f2fs_is_atomic_file(inode)) |
29b96b54 | 1533 | drop_inmem_pages(inode); |
732d5648 | 1534 | if (f2fs_is_volatile_file(inode)) { |
91942321 | 1535 | clear_inode_flag(inode, FI_VOLATILE_FILE); |
608514de | 1536 | ret = f2fs_do_sync_file(filp, 0, LLONG_MAX, 0, true); |
732d5648 | 1537 | } |
de6a8ec9 | 1538 | |
0fac558b CY |
1539 | inode_unlock(inode); |
1540 | ||
1e84371f | 1541 | mnt_drop_write_file(filp); |
d0239e1b | 1542 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); |
1e84371f JK |
1543 | return ret; |
1544 | } | |
1545 | ||
1abff93d JK |
1546 | static int f2fs_ioc_shutdown(struct file *filp, unsigned long arg) |
1547 | { | |
1548 | struct inode *inode = file_inode(filp); | |
1549 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
1550 | struct super_block *sb = sbi->sb; | |
1551 | __u32 in; | |
7fb17fe4 | 1552 | int ret; |
1abff93d JK |
1553 | |
1554 | if (!capable(CAP_SYS_ADMIN)) | |
1555 | return -EPERM; | |
1556 | ||
1557 | if (get_user(in, (__u32 __user *)arg)) | |
1558 | return -EFAULT; | |
1559 | ||
7fb17fe4 CY |
1560 | ret = mnt_want_write_file(filp); |
1561 | if (ret) | |
1562 | return ret; | |
1563 | ||
1abff93d JK |
1564 | switch (in) { |
1565 | case F2FS_GOING_DOWN_FULLSYNC: | |
1566 | sb = freeze_bdev(sb->s_bdev); | |
1567 | if (sb && !IS_ERR(sb)) { | |
38f91ca8 | 1568 | f2fs_stop_checkpoint(sbi, false); |
1abff93d JK |
1569 | thaw_bdev(sb->s_bdev, sb); |
1570 | } | |
1571 | break; | |
1572 | case F2FS_GOING_DOWN_METASYNC: | |
1573 | /* do checkpoint only */ | |
1574 | f2fs_sync_fs(sb, 1); | |
38f91ca8 | 1575 | f2fs_stop_checkpoint(sbi, false); |
1abff93d JK |
1576 | break; |
1577 | case F2FS_GOING_DOWN_NOSYNC: | |
38f91ca8 | 1578 | f2fs_stop_checkpoint(sbi, false); |
1abff93d | 1579 | break; |
c912a829 JK |
1580 | case F2FS_GOING_DOWN_METAFLUSH: |
1581 | sync_meta_pages(sbi, META, LONG_MAX); | |
38f91ca8 | 1582 | f2fs_stop_checkpoint(sbi, false); |
c912a829 | 1583 | break; |
1abff93d | 1584 | default: |
7fb17fe4 CY |
1585 | ret = -EINVAL; |
1586 | goto out; | |
1abff93d | 1587 | } |
d0239e1b | 1588 | f2fs_update_time(sbi, REQ_TIME); |
7fb17fe4 CY |
1589 | out: |
1590 | mnt_drop_write_file(filp); | |
1591 | return ret; | |
1abff93d JK |
1592 | } |
1593 | ||
52656e6c JK |
1594 | static int f2fs_ioc_fitrim(struct file *filp, unsigned long arg) |
1595 | { | |
1596 | struct inode *inode = file_inode(filp); | |
1597 | struct super_block *sb = inode->i_sb; | |
1598 | struct request_queue *q = bdev_get_queue(sb->s_bdev); | |
1599 | struct fstrim_range range; | |
1600 | int ret; | |
4b2fecc8 | 1601 | |
52656e6c JK |
1602 | if (!capable(CAP_SYS_ADMIN)) |
1603 | return -EPERM; | |
4b2fecc8 | 1604 | |
52656e6c JK |
1605 | if (!blk_queue_discard(q)) |
1606 | return -EOPNOTSUPP; | |
4b2fecc8 | 1607 | |
52656e6c JK |
1608 | if (copy_from_user(&range, (struct fstrim_range __user *)arg, |
1609 | sizeof(range))) | |
1610 | return -EFAULT; | |
4b2fecc8 | 1611 | |
7fb17fe4 CY |
1612 | ret = mnt_want_write_file(filp); |
1613 | if (ret) | |
1614 | return ret; | |
1615 | ||
52656e6c JK |
1616 | range.minlen = max((unsigned int)range.minlen, |
1617 | q->limits.discard_granularity); | |
1618 | ret = f2fs_trim_fs(F2FS_SB(sb), &range); | |
7fb17fe4 | 1619 | mnt_drop_write_file(filp); |
52656e6c JK |
1620 | if (ret < 0) |
1621 | return ret; | |
4b2fecc8 | 1622 | |
52656e6c JK |
1623 | if (copy_to_user((struct fstrim_range __user *)arg, &range, |
1624 | sizeof(range))) | |
1625 | return -EFAULT; | |
d0239e1b | 1626 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); |
52656e6c JK |
1627 | return 0; |
1628 | } | |
1629 | ||
f424f664 JK |
1630 | static bool uuid_is_nonzero(__u8 u[16]) |
1631 | { | |
1632 | int i; | |
1633 | ||
1634 | for (i = 0; i < 16; i++) | |
1635 | if (u[i]) | |
1636 | return true; | |
1637 | return false; | |
1638 | } | |
1639 | ||
1640 | static int f2fs_ioc_set_encryption_policy(struct file *filp, unsigned long arg) | |
1641 | { | |
0b81d077 | 1642 | struct fscrypt_policy policy; |
f424f664 | 1643 | struct inode *inode = file_inode(filp); |
7fb17fe4 | 1644 | int ret; |
f424f664 | 1645 | |
0b81d077 JK |
1646 | if (copy_from_user(&policy, (struct fscrypt_policy __user *)arg, |
1647 | sizeof(policy))) | |
f424f664 JK |
1648 | return -EFAULT; |
1649 | ||
7fb17fe4 CY |
1650 | ret = mnt_want_write_file(filp); |
1651 | if (ret) | |
1652 | return ret; | |
1653 | ||
d0239e1b | 1654 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); |
7fb17fe4 CY |
1655 | ret = fscrypt_process_policy(inode, &policy); |
1656 | ||
1657 | mnt_drop_write_file(filp); | |
1658 | return ret; | |
f424f664 JK |
1659 | } |
1660 | ||
1661 | static int f2fs_ioc_get_encryption_policy(struct file *filp, unsigned long arg) | |
1662 | { | |
0b81d077 | 1663 | struct fscrypt_policy policy; |
f424f664 JK |
1664 | struct inode *inode = file_inode(filp); |
1665 | int err; | |
1666 | ||
0b81d077 | 1667 | err = fscrypt_get_policy(inode, &policy); |
f424f664 JK |
1668 | if (err) |
1669 | return err; | |
1670 | ||
0b81d077 | 1671 | if (copy_to_user((struct fscrypt_policy __user *)arg, &policy, sizeof(policy))) |
f424f664 JK |
1672 | return -EFAULT; |
1673 | return 0; | |
f424f664 JK |
1674 | } |
1675 | ||
1676 | static int f2fs_ioc_get_encryption_pwsalt(struct file *filp, unsigned long arg) | |
1677 | { | |
1678 | struct inode *inode = file_inode(filp); | |
1679 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
1680 | int err; | |
1681 | ||
1682 | if (!f2fs_sb_has_crypto(inode->i_sb)) | |
1683 | return -EOPNOTSUPP; | |
1684 | ||
1685 | if (uuid_is_nonzero(sbi->raw_super->encrypt_pw_salt)) | |
1686 | goto got_it; | |
1687 | ||
1688 | err = mnt_want_write_file(filp); | |
1689 | if (err) | |
1690 | return err; | |
1691 | ||
1692 | /* update superblock with uuid */ | |
1693 | generate_random_uuid(sbi->raw_super->encrypt_pw_salt); | |
1694 | ||
c5bda1c8 | 1695 | err = f2fs_commit_super(sbi, false); |
f424f664 JK |
1696 | if (err) { |
1697 | /* undo new data */ | |
1698 | memset(sbi->raw_super->encrypt_pw_salt, 0, 16); | |
e8240f65 | 1699 | mnt_drop_write_file(filp); |
f424f664 JK |
1700 | return err; |
1701 | } | |
e8240f65 | 1702 | mnt_drop_write_file(filp); |
f424f664 JK |
1703 | got_it: |
1704 | if (copy_to_user((__u8 __user *)arg, sbi->raw_super->encrypt_pw_salt, | |
1705 | 16)) | |
1706 | return -EFAULT; | |
1707 | return 0; | |
1708 | } | |
1709 | ||
c1c1b583 CY |
1710 | static int f2fs_ioc_gc(struct file *filp, unsigned long arg) |
1711 | { | |
1712 | struct inode *inode = file_inode(filp); | |
1713 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
d530d4d8 | 1714 | __u32 sync; |
7fb17fe4 | 1715 | int ret; |
c1c1b583 CY |
1716 | |
1717 | if (!capable(CAP_SYS_ADMIN)) | |
1718 | return -EPERM; | |
1719 | ||
d530d4d8 | 1720 | if (get_user(sync, (__u32 __user *)arg)) |
c1c1b583 CY |
1721 | return -EFAULT; |
1722 | ||
d530d4d8 CY |
1723 | if (f2fs_readonly(sbi->sb)) |
1724 | return -EROFS; | |
c1c1b583 | 1725 | |
7fb17fe4 CY |
1726 | ret = mnt_want_write_file(filp); |
1727 | if (ret) | |
1728 | return ret; | |
1729 | ||
d530d4d8 | 1730 | if (!sync) { |
7fb17fe4 CY |
1731 | if (!mutex_trylock(&sbi->gc_mutex)) { |
1732 | ret = -EBUSY; | |
1733 | goto out; | |
1734 | } | |
d530d4d8 CY |
1735 | } else { |
1736 | mutex_lock(&sbi->gc_mutex); | |
c1c1b583 CY |
1737 | } |
1738 | ||
7fb17fe4 CY |
1739 | ret = f2fs_gc(sbi, sync); |
1740 | out: | |
1741 | mnt_drop_write_file(filp); | |
1742 | return ret; | |
c1c1b583 CY |
1743 | } |
1744 | ||
456b88e4 CY |
1745 | static int f2fs_ioc_write_checkpoint(struct file *filp, unsigned long arg) |
1746 | { | |
1747 | struct inode *inode = file_inode(filp); | |
1748 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
7fb17fe4 | 1749 | int ret; |
456b88e4 CY |
1750 | |
1751 | if (!capable(CAP_SYS_ADMIN)) | |
1752 | return -EPERM; | |
1753 | ||
1754 | if (f2fs_readonly(sbi->sb)) | |
1755 | return -EROFS; | |
1756 | ||
7fb17fe4 CY |
1757 | ret = mnt_want_write_file(filp); |
1758 | if (ret) | |
1759 | return ret; | |
1760 | ||
1761 | ret = f2fs_sync_fs(sbi->sb, 1); | |
1762 | ||
1763 | mnt_drop_write_file(filp); | |
1764 | return ret; | |
456b88e4 CY |
1765 | } |
1766 | ||
d323d005 CY |
1767 | static int f2fs_defragment_range(struct f2fs_sb_info *sbi, |
1768 | struct file *filp, | |
1769 | struct f2fs_defragment *range) | |
1770 | { | |
1771 | struct inode *inode = file_inode(filp); | |
da85985c | 1772 | struct f2fs_map_blocks map = { .m_next_pgofs = NULL }; |
d323d005 CY |
1773 | struct extent_info ei; |
1774 | pgoff_t pg_start, pg_end; | |
3519e3f9 | 1775 | unsigned int blk_per_seg = sbi->blocks_per_seg; |
d323d005 | 1776 | unsigned int total = 0, sec_num; |
3519e3f9 | 1777 | unsigned int pages_per_sec = sbi->segs_per_sec * blk_per_seg; |
d323d005 CY |
1778 | block_t blk_end = 0; |
1779 | bool fragmented = false; | |
1780 | int err; | |
1781 | ||
1782 | /* if in-place-update policy is enabled, don't waste time here */ | |
1783 | if (need_inplace_update(inode)) | |
1784 | return -EINVAL; | |
1785 | ||
09cbfeaf KS |
1786 | pg_start = range->start >> PAGE_SHIFT; |
1787 | pg_end = (range->start + range->len) >> PAGE_SHIFT; | |
d323d005 | 1788 | |
2c4db1a6 | 1789 | f2fs_balance_fs(sbi, true); |
d323d005 | 1790 | |
5955102c | 1791 | inode_lock(inode); |
d323d005 CY |
1792 | |
1793 | /* writeback all dirty pages in the range */ | |
1794 | err = filemap_write_and_wait_range(inode->i_mapping, range->start, | |
d8fe4f0e | 1795 | range->start + range->len - 1); |
d323d005 CY |
1796 | if (err) |
1797 | goto out; | |
1798 | ||
1799 | /* | |
1800 | * lookup mapping info in extent cache, skip defragmenting if physical | |
1801 | * block addresses are continuous. | |
1802 | */ | |
1803 | if (f2fs_lookup_extent_cache(inode, pg_start, &ei)) { | |
1804 | if (ei.fofs + ei.len >= pg_end) | |
1805 | goto out; | |
1806 | } | |
1807 | ||
1808 | map.m_lblk = pg_start; | |
d323d005 CY |
1809 | |
1810 | /* | |
1811 | * lookup mapping info in dnode page cache, skip defragmenting if all | |
1812 | * physical block addresses are continuous even if there are hole(s) | |
1813 | * in logical blocks. | |
1814 | */ | |
1815 | while (map.m_lblk < pg_end) { | |
a1c1e9b7 | 1816 | map.m_len = pg_end - map.m_lblk; |
d323d005 CY |
1817 | err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_READ); |
1818 | if (err) | |
1819 | goto out; | |
1820 | ||
1821 | if (!(map.m_flags & F2FS_MAP_FLAGS)) { | |
1822 | map.m_lblk++; | |
d323d005 CY |
1823 | continue; |
1824 | } | |
1825 | ||
1826 | if (blk_end && blk_end != map.m_pblk) { | |
1827 | fragmented = true; | |
1828 | break; | |
1829 | } | |
1830 | blk_end = map.m_pblk + map.m_len; | |
1831 | ||
1832 | map.m_lblk += map.m_len; | |
d323d005 CY |
1833 | } |
1834 | ||
1835 | if (!fragmented) | |
1836 | goto out; | |
1837 | ||
1838 | map.m_lblk = pg_start; | |
1839 | map.m_len = pg_end - pg_start; | |
1840 | ||
1841 | sec_num = (map.m_len + pages_per_sec - 1) / pages_per_sec; | |
1842 | ||
1843 | /* | |
1844 | * make sure there are enough free section for LFS allocation, this can | |
1845 | * avoid defragment running in SSR mode when free section are allocated | |
1846 | * intensively | |
1847 | */ | |
1848 | if (has_not_enough_free_secs(sbi, sec_num)) { | |
1849 | err = -EAGAIN; | |
1850 | goto out; | |
1851 | } | |
1852 | ||
1853 | while (map.m_lblk < pg_end) { | |
1854 | pgoff_t idx; | |
1855 | int cnt = 0; | |
1856 | ||
1857 | do_map: | |
a1c1e9b7 | 1858 | map.m_len = pg_end - map.m_lblk; |
d323d005 CY |
1859 | err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_READ); |
1860 | if (err) | |
1861 | goto clear_out; | |
1862 | ||
1863 | if (!(map.m_flags & F2FS_MAP_FLAGS)) { | |
1864 | map.m_lblk++; | |
1865 | continue; | |
1866 | } | |
1867 | ||
91942321 | 1868 | set_inode_flag(inode, FI_DO_DEFRAG); |
d323d005 CY |
1869 | |
1870 | idx = map.m_lblk; | |
1871 | while (idx < map.m_lblk + map.m_len && cnt < blk_per_seg) { | |
1872 | struct page *page; | |
1873 | ||
1874 | page = get_lock_data_page(inode, idx, true); | |
1875 | if (IS_ERR(page)) { | |
1876 | err = PTR_ERR(page); | |
1877 | goto clear_out; | |
1878 | } | |
1879 | ||
1880 | set_page_dirty(page); | |
1881 | f2fs_put_page(page, 1); | |
1882 | ||
1883 | idx++; | |
1884 | cnt++; | |
1885 | total++; | |
1886 | } | |
1887 | ||
1888 | map.m_lblk = idx; | |
d323d005 CY |
1889 | |
1890 | if (idx < pg_end && cnt < blk_per_seg) | |
1891 | goto do_map; | |
1892 | ||
91942321 | 1893 | clear_inode_flag(inode, FI_DO_DEFRAG); |
d323d005 CY |
1894 | |
1895 | err = filemap_fdatawrite(inode->i_mapping); | |
1896 | if (err) | |
1897 | goto out; | |
1898 | } | |
1899 | clear_out: | |
91942321 | 1900 | clear_inode_flag(inode, FI_DO_DEFRAG); |
d323d005 | 1901 | out: |
5955102c | 1902 | inode_unlock(inode); |
d323d005 | 1903 | if (!err) |
09cbfeaf | 1904 | range->len = (u64)total << PAGE_SHIFT; |
d323d005 CY |
1905 | return err; |
1906 | } | |
1907 | ||
1908 | static int f2fs_ioc_defragment(struct file *filp, unsigned long arg) | |
1909 | { | |
1910 | struct inode *inode = file_inode(filp); | |
1911 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
1912 | struct f2fs_defragment range; | |
1913 | int err; | |
1914 | ||
1915 | if (!capable(CAP_SYS_ADMIN)) | |
1916 | return -EPERM; | |
1917 | ||
1918 | if (!S_ISREG(inode->i_mode)) | |
1919 | return -EINVAL; | |
1920 | ||
1921 | err = mnt_want_write_file(filp); | |
1922 | if (err) | |
1923 | return err; | |
1924 | ||
1925 | if (f2fs_readonly(sbi->sb)) { | |
1926 | err = -EROFS; | |
1927 | goto out; | |
1928 | } | |
1929 | ||
1930 | if (copy_from_user(&range, (struct f2fs_defragment __user *)arg, | |
1931 | sizeof(range))) { | |
1932 | err = -EFAULT; | |
1933 | goto out; | |
1934 | } | |
1935 | ||
1936 | /* verify alignment of offset & size */ | |
1937 | if (range.start & (F2FS_BLKSIZE - 1) || | |
1938 | range.len & (F2FS_BLKSIZE - 1)) { | |
1939 | err = -EINVAL; | |
1940 | goto out; | |
1941 | } | |
1942 | ||
1943 | err = f2fs_defragment_range(sbi, filp, &range); | |
d0239e1b | 1944 | f2fs_update_time(sbi, REQ_TIME); |
d323d005 CY |
1945 | if (err < 0) |
1946 | goto out; | |
1947 | ||
1948 | if (copy_to_user((struct f2fs_defragment __user *)arg, &range, | |
1949 | sizeof(range))) | |
1950 | err = -EFAULT; | |
1951 | out: | |
1952 | mnt_drop_write_file(filp); | |
1953 | return err; | |
1954 | } | |
1955 | ||
52656e6c JK |
1956 | long f2fs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) |
1957 | { | |
1958 | switch (cmd) { | |
1959 | case F2FS_IOC_GETFLAGS: | |
1960 | return f2fs_ioc_getflags(filp, arg); | |
1961 | case F2FS_IOC_SETFLAGS: | |
1962 | return f2fs_ioc_setflags(filp, arg); | |
d49f3e89 CY |
1963 | case F2FS_IOC_GETVERSION: |
1964 | return f2fs_ioc_getversion(filp, arg); | |
88b88a66 JK |
1965 | case F2FS_IOC_START_ATOMIC_WRITE: |
1966 | return f2fs_ioc_start_atomic_write(filp); | |
1967 | case F2FS_IOC_COMMIT_ATOMIC_WRITE: | |
1968 | return f2fs_ioc_commit_atomic_write(filp); | |
02a1335f JK |
1969 | case F2FS_IOC_START_VOLATILE_WRITE: |
1970 | return f2fs_ioc_start_volatile_write(filp); | |
1e84371f JK |
1971 | case F2FS_IOC_RELEASE_VOLATILE_WRITE: |
1972 | return f2fs_ioc_release_volatile_write(filp); | |
1973 | case F2FS_IOC_ABORT_VOLATILE_WRITE: | |
1974 | return f2fs_ioc_abort_volatile_write(filp); | |
1abff93d JK |
1975 | case F2FS_IOC_SHUTDOWN: |
1976 | return f2fs_ioc_shutdown(filp, arg); | |
52656e6c JK |
1977 | case FITRIM: |
1978 | return f2fs_ioc_fitrim(filp, arg); | |
f424f664 JK |
1979 | case F2FS_IOC_SET_ENCRYPTION_POLICY: |
1980 | return f2fs_ioc_set_encryption_policy(filp, arg); | |
1981 | case F2FS_IOC_GET_ENCRYPTION_POLICY: | |
1982 | return f2fs_ioc_get_encryption_policy(filp, arg); | |
1983 | case F2FS_IOC_GET_ENCRYPTION_PWSALT: | |
1984 | return f2fs_ioc_get_encryption_pwsalt(filp, arg); | |
c1c1b583 CY |
1985 | case F2FS_IOC_GARBAGE_COLLECT: |
1986 | return f2fs_ioc_gc(filp, arg); | |
456b88e4 CY |
1987 | case F2FS_IOC_WRITE_CHECKPOINT: |
1988 | return f2fs_ioc_write_checkpoint(filp, arg); | |
d323d005 CY |
1989 | case F2FS_IOC_DEFRAGMENT: |
1990 | return f2fs_ioc_defragment(filp, arg); | |
fbfa2cc5 JK |
1991 | default: |
1992 | return -ENOTTY; | |
1993 | } | |
1994 | } | |
1995 | ||
fcc85a4d JK |
1996 | static ssize_t f2fs_file_write_iter(struct kiocb *iocb, struct iov_iter *from) |
1997 | { | |
b439b103 JK |
1998 | struct file *file = iocb->ki_filp; |
1999 | struct inode *inode = file_inode(file); | |
2000 | ssize_t ret; | |
fcc85a4d JK |
2001 | |
2002 | if (f2fs_encrypted_inode(inode) && | |
0b81d077 JK |
2003 | !fscrypt_has_encryption_key(inode) && |
2004 | fscrypt_get_encryption_info(inode)) | |
fcc85a4d JK |
2005 | return -EACCES; |
2006 | ||
b439b103 JK |
2007 | inode_lock(inode); |
2008 | ret = generic_write_checks(iocb, from); | |
2009 | if (ret > 0) { | |
2010 | ret = f2fs_preallocate_blocks(iocb, from); | |
2011 | if (!ret) | |
2012 | ret = __generic_file_write_iter(iocb, from); | |
2013 | } | |
2014 | inode_unlock(inode); | |
2015 | ||
e2592217 CH |
2016 | if (ret > 0) |
2017 | ret = generic_write_sync(iocb, ret); | |
b439b103 | 2018 | return ret; |
fcc85a4d JK |
2019 | } |
2020 | ||
e9750824 NJ |
2021 | #ifdef CONFIG_COMPAT |
2022 | long f2fs_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg) | |
2023 | { | |
2024 | switch (cmd) { | |
2025 | case F2FS_IOC32_GETFLAGS: | |
2026 | cmd = F2FS_IOC_GETFLAGS; | |
2027 | break; | |
2028 | case F2FS_IOC32_SETFLAGS: | |
2029 | cmd = F2FS_IOC_SETFLAGS; | |
2030 | break; | |
04ef4b62 CY |
2031 | case F2FS_IOC32_GETVERSION: |
2032 | cmd = F2FS_IOC_GETVERSION; | |
2033 | break; | |
2034 | case F2FS_IOC_START_ATOMIC_WRITE: | |
2035 | case F2FS_IOC_COMMIT_ATOMIC_WRITE: | |
2036 | case F2FS_IOC_START_VOLATILE_WRITE: | |
2037 | case F2FS_IOC_RELEASE_VOLATILE_WRITE: | |
2038 | case F2FS_IOC_ABORT_VOLATILE_WRITE: | |
2039 | case F2FS_IOC_SHUTDOWN: | |
2040 | case F2FS_IOC_SET_ENCRYPTION_POLICY: | |
2041 | case F2FS_IOC_GET_ENCRYPTION_PWSALT: | |
2042 | case F2FS_IOC_GET_ENCRYPTION_POLICY: | |
2043 | case F2FS_IOC_GARBAGE_COLLECT: | |
2044 | case F2FS_IOC_WRITE_CHECKPOINT: | |
2045 | case F2FS_IOC_DEFRAGMENT: | |
2046 | break; | |
e9750824 NJ |
2047 | default: |
2048 | return -ENOIOCTLCMD; | |
2049 | } | |
2050 | return f2fs_ioctl(file, cmd, (unsigned long) compat_ptr(arg)); | |
2051 | } | |
2052 | #endif | |
2053 | ||
fbfa2cc5 | 2054 | const struct file_operations f2fs_file_operations = { |
267378d4 | 2055 | .llseek = f2fs_llseek, |
aad4f8bb | 2056 | .read_iter = generic_file_read_iter, |
fcc85a4d JK |
2057 | .write_iter = f2fs_file_write_iter, |
2058 | .open = f2fs_file_open, | |
12662234 | 2059 | .release = f2fs_release_file, |
fbfa2cc5 JK |
2060 | .mmap = f2fs_file_mmap, |
2061 | .fsync = f2fs_sync_file, | |
2062 | .fallocate = f2fs_fallocate, | |
2063 | .unlocked_ioctl = f2fs_ioctl, | |
e9750824 NJ |
2064 | #ifdef CONFIG_COMPAT |
2065 | .compat_ioctl = f2fs_compat_ioctl, | |
2066 | #endif | |
fbfa2cc5 | 2067 | .splice_read = generic_file_splice_read, |
8d020765 | 2068 | .splice_write = iter_file_splice_write, |
fbfa2cc5 | 2069 | }; |