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> |
f424f664 | 23 | #include <linux/random.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 */ | |
9edcdabf CY |
77 | if (((loff_t)(page->index + 1) << PAGE_CACHE_SHIFT) > |
78 | i_size_read(inode)) { | |
fbfa2cc5 JK |
79 | unsigned offset; |
80 | offset = i_size_read(inode) & ~PAGE_CACHE_MASK; | |
81 | zero_user_segment(page, offset, PAGE_CACHE_SIZE); | |
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 | ||
fbfa2cc5 JK |
185 | int f2fs_sync_file(struct file *file, loff_t start, loff_t end, int datasync) |
186 | { | |
187 | struct inode *inode = file->f_mapping->host; | |
d928bfbf | 188 | struct f2fs_inode_info *fi = F2FS_I(inode); |
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) |
ea1aa12c | 206 | set_inode_flag(fi, FI_NEED_IPU); |
fbfa2cc5 | 207 | ret = filemap_write_and_wait_range(inode->i_mapping, start, end); |
c1ce1b02 JK |
208 | clear_inode_flag(fi, FI_NEED_IPU); |
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 | */ | |
224 | if (!is_inode_flag_set(fi, 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 | |
6d99ba41 | 231 | if (is_inode_flag_set(fi, 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 | */ | |
9d1589ef CY |
241 | down_read(&fi->i_sem); |
242 | need_cp = need_do_checkpoint(inode); | |
d928bfbf JK |
243 | up_read(&fi->i_sem); |
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); | |
cff28521 JK |
254 | clear_inode_flag(fi, FI_APPEND_WRITE); |
255 | clear_inode_flag(fi, FI_UPDATE_WRITE); | |
51455b19 CL |
256 | goto out; |
257 | } | |
88bd02c9 | 258 | sync_nodes: |
51455b19 CL |
259 | sync_node_pages(sbi, ino, &wbc); |
260 | ||
871f599f | 261 | /* if cp_error was enabled, we should avoid infinite loop */ |
6d5a1495 CY |
262 | if (unlikely(f2fs_cp_error(sbi))) { |
263 | ret = -EIO; | |
871f599f | 264 | goto out; |
6d5a1495 | 265 | } |
871f599f | 266 | |
51455b19 CL |
267 | if (need_inode_block_update(sbi, ino)) { |
268 | mark_inode_dirty_sync(inode); | |
269 | f2fs_write_inode(inode, NULL); | |
270 | goto sync_nodes; | |
fbfa2cc5 | 271 | } |
51455b19 CL |
272 | |
273 | ret = wait_on_node_pages_writeback(sbi, ino); | |
274 | if (ret) | |
275 | goto out; | |
276 | ||
277 | /* once recovery info is written, don't need to tack this */ | |
a49324f1 | 278 | remove_ino_entry(sbi, ino, APPEND_INO); |
51455b19 CL |
279 | clear_inode_flag(fi, FI_APPEND_WRITE); |
280 | flush_out: | |
a49324f1 | 281 | remove_ino_entry(sbi, ino, UPDATE_INO); |
51455b19 CL |
282 | clear_inode_flag(fi, FI_UPDATE_WRITE); |
283 | ret = f2fs_issue_flush(sbi); | |
d0239e1b | 284 | f2fs_update_time(sbi, REQ_TIME); |
fbfa2cc5 | 285 | out: |
a2a4a7e4 | 286 | trace_f2fs_sync_file_exit(inode, need_cp, datasync, ret); |
05ca3632 | 287 | f2fs_trace_ios(NULL, 1); |
fbfa2cc5 JK |
288 | return ret; |
289 | } | |
290 | ||
7f7670fe JK |
291 | static pgoff_t __get_first_dirty_index(struct address_space *mapping, |
292 | pgoff_t pgofs, int whence) | |
293 | { | |
294 | struct pagevec pvec; | |
295 | int nr_pages; | |
296 | ||
297 | if (whence != SEEK_DATA) | |
298 | return 0; | |
299 | ||
300 | /* find first dirty page index */ | |
301 | pagevec_init(&pvec, 0); | |
65b85ccc JK |
302 | nr_pages = pagevec_lookup_tag(&pvec, mapping, &pgofs, |
303 | PAGECACHE_TAG_DIRTY, 1); | |
80dd9c0e | 304 | pgofs = nr_pages ? pvec.pages[0]->index : ULONG_MAX; |
7f7670fe JK |
305 | pagevec_release(&pvec); |
306 | return pgofs; | |
307 | } | |
308 | ||
309 | static bool __found_offset(block_t blkaddr, pgoff_t dirty, pgoff_t pgofs, | |
310 | int whence) | |
311 | { | |
312 | switch (whence) { | |
313 | case SEEK_DATA: | |
314 | if ((blkaddr == NEW_ADDR && dirty == pgofs) || | |
315 | (blkaddr != NEW_ADDR && blkaddr != NULL_ADDR)) | |
316 | return true; | |
317 | break; | |
318 | case SEEK_HOLE: | |
319 | if (blkaddr == NULL_ADDR) | |
320 | return true; | |
321 | break; | |
322 | } | |
323 | return false; | |
324 | } | |
325 | ||
267378d4 CY |
326 | static loff_t f2fs_seek_block(struct file *file, loff_t offset, int whence) |
327 | { | |
328 | struct inode *inode = file->f_mapping->host; | |
329 | loff_t maxbytes = inode->i_sb->s_maxbytes; | |
330 | struct dnode_of_data dn; | |
7f7670fe JK |
331 | pgoff_t pgofs, end_offset, dirty; |
332 | loff_t data_ofs = offset; | |
333 | loff_t isize; | |
267378d4 CY |
334 | int err = 0; |
335 | ||
5955102c | 336 | inode_lock(inode); |
267378d4 CY |
337 | |
338 | isize = i_size_read(inode); | |
339 | if (offset >= isize) | |
340 | goto fail; | |
341 | ||
342 | /* handle inline data case */ | |
622f28ae | 343 | if (f2fs_has_inline_data(inode) || f2fs_has_inline_dentry(inode)) { |
267378d4 CY |
344 | if (whence == SEEK_HOLE) |
345 | data_ofs = isize; | |
346 | goto found; | |
347 | } | |
348 | ||
349 | pgofs = (pgoff_t)(offset >> PAGE_CACHE_SHIFT); | |
350 | ||
7f7670fe JK |
351 | dirty = __get_first_dirty_index(inode->i_mapping, pgofs, whence); |
352 | ||
9edcdabf | 353 | for (; data_ofs < isize; data_ofs = (loff_t)pgofs << PAGE_CACHE_SHIFT) { |
267378d4 CY |
354 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
355 | err = get_dnode_of_data(&dn, pgofs, LOOKUP_NODE_RA); | |
356 | if (err && err != -ENOENT) { | |
357 | goto fail; | |
358 | } else if (err == -ENOENT) { | |
e1c42045 | 359 | /* direct node does not exists */ |
267378d4 | 360 | if (whence == SEEK_DATA) { |
3cf45747 | 361 | pgofs = get_next_page_offset(&dn, pgofs); |
267378d4 CY |
362 | continue; |
363 | } else { | |
364 | goto found; | |
365 | } | |
366 | } | |
367 | ||
81ca7350 | 368 | end_offset = ADDRS_PER_PAGE(dn.node_page, inode); |
267378d4 CY |
369 | |
370 | /* find data/hole in dnode block */ | |
371 | for (; dn.ofs_in_node < end_offset; | |
372 | dn.ofs_in_node++, pgofs++, | |
2e023174 | 373 | data_ofs = (loff_t)pgofs << PAGE_CACHE_SHIFT) { |
267378d4 CY |
374 | block_t blkaddr; |
375 | blkaddr = datablock_addr(dn.node_page, dn.ofs_in_node); | |
376 | ||
7f7670fe | 377 | if (__found_offset(blkaddr, dirty, pgofs, whence)) { |
267378d4 CY |
378 | f2fs_put_dnode(&dn); |
379 | goto found; | |
380 | } | |
381 | } | |
382 | f2fs_put_dnode(&dn); | |
383 | } | |
384 | ||
385 | if (whence == SEEK_DATA) | |
386 | goto fail; | |
267378d4 | 387 | found: |
fe369bc8 JK |
388 | if (whence == SEEK_HOLE && data_ofs > isize) |
389 | data_ofs = isize; | |
5955102c | 390 | inode_unlock(inode); |
267378d4 CY |
391 | return vfs_setpos(file, data_ofs, maxbytes); |
392 | fail: | |
5955102c | 393 | inode_unlock(inode); |
267378d4 CY |
394 | return -ENXIO; |
395 | } | |
396 | ||
397 | static loff_t f2fs_llseek(struct file *file, loff_t offset, int whence) | |
398 | { | |
399 | struct inode *inode = file->f_mapping->host; | |
400 | loff_t maxbytes = inode->i_sb->s_maxbytes; | |
401 | ||
402 | switch (whence) { | |
403 | case SEEK_SET: | |
404 | case SEEK_CUR: | |
405 | case SEEK_END: | |
406 | return generic_file_llseek_size(file, offset, whence, | |
407 | maxbytes, i_size_read(inode)); | |
408 | case SEEK_DATA: | |
409 | case SEEK_HOLE: | |
0b4c5afd JK |
410 | if (offset < 0) |
411 | return -ENXIO; | |
267378d4 CY |
412 | return f2fs_seek_block(file, offset, whence); |
413 | } | |
414 | ||
415 | return -EINVAL; | |
416 | } | |
417 | ||
fbfa2cc5 JK |
418 | static int f2fs_file_mmap(struct file *file, struct vm_area_struct *vma) |
419 | { | |
b3d208f9 | 420 | struct inode *inode = file_inode(file); |
b9d777b8 | 421 | int err; |
b3d208f9 | 422 | |
fcc85a4d | 423 | if (f2fs_encrypted_inode(inode)) { |
0b81d077 | 424 | err = fscrypt_get_encryption_info(inode); |
fcc85a4d JK |
425 | if (err) |
426 | return 0; | |
ae108668 CY |
427 | if (!f2fs_encrypted_inode(inode)) |
428 | return -ENOKEY; | |
fcc85a4d JK |
429 | } |
430 | ||
b3d208f9 | 431 | /* we don't need to use inline_data strictly */ |
b9d777b8 JK |
432 | err = f2fs_convert_inline_inode(inode); |
433 | if (err) | |
434 | return err; | |
b3d208f9 | 435 | |
fbfa2cc5 JK |
436 | file_accessed(file); |
437 | vma->vm_ops = &f2fs_file_vm_ops; | |
438 | return 0; | |
439 | } | |
440 | ||
fcc85a4d JK |
441 | static int f2fs_file_open(struct inode *inode, struct file *filp) |
442 | { | |
443 | int ret = generic_file_open(inode, filp); | |
444 | ||
445 | if (!ret && f2fs_encrypted_inode(inode)) { | |
0b81d077 | 446 | ret = fscrypt_get_encryption_info(inode); |
fcc85a4d | 447 | if (ret) |
ae108668 | 448 | return -EACCES; |
0b81d077 | 449 | if (!fscrypt_has_encryption_key(inode)) |
ae108668 | 450 | return -ENOKEY; |
fcc85a4d JK |
451 | } |
452 | return ret; | |
453 | } | |
454 | ||
b292dcab | 455 | int truncate_data_blocks_range(struct dnode_of_data *dn, int count) |
fbfa2cc5 | 456 | { |
4081363f | 457 | struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); |
fbfa2cc5 | 458 | struct f2fs_node *raw_node; |
19b2c30d | 459 | int nr_free = 0, ofs = dn->ofs_in_node, len = count; |
fbfa2cc5 JK |
460 | __le32 *addr; |
461 | ||
45590710 | 462 | raw_node = F2FS_NODE(dn->node_page); |
fbfa2cc5 JK |
463 | addr = blkaddr_in_node(raw_node) + ofs; |
464 | ||
6c311ec6 | 465 | for (; count > 0; count--, addr++, dn->ofs_in_node++) { |
fbfa2cc5 JK |
466 | block_t blkaddr = le32_to_cpu(*addr); |
467 | if (blkaddr == NULL_ADDR) | |
468 | continue; | |
469 | ||
e1509cf2 | 470 | dn->data_blkaddr = NULL_ADDR; |
216a620a | 471 | set_data_blkaddr(dn); |
fbfa2cc5 | 472 | invalidate_blocks(sbi, blkaddr); |
3c6c2beb JK |
473 | if (dn->ofs_in_node == 0 && IS_INODE(dn->node_page)) |
474 | clear_inode_flag(F2FS_I(dn->inode), | |
475 | FI_FIRST_BLOCK_WRITTEN); | |
fbfa2cc5 JK |
476 | nr_free++; |
477 | } | |
19b2c30d | 478 | |
fbfa2cc5 | 479 | if (nr_free) { |
19b2c30d CY |
480 | pgoff_t fofs; |
481 | /* | |
482 | * once we invalidate valid blkaddr in range [ofs, ofs + count], | |
483 | * we will invalidate all blkaddr in the whole range. | |
484 | */ | |
485 | fofs = start_bidx_of_node(ofs_of_node(dn->node_page), | |
81ca7350 | 486 | dn->inode) + ofs; |
19b2c30d | 487 | f2fs_update_extent_cache_range(dn, fofs, 0, len); |
d7cc950b | 488 | dec_valid_block_count(sbi, dn->inode, nr_free); |
fbfa2cc5 JK |
489 | sync_inode_page(dn); |
490 | } | |
491 | dn->ofs_in_node = ofs; | |
51dd6249 | 492 | |
d0239e1b | 493 | f2fs_update_time(sbi, REQ_TIME); |
51dd6249 NJ |
494 | trace_f2fs_truncate_data_blocks_range(dn->inode, dn->nid, |
495 | dn->ofs_in_node, nr_free); | |
fbfa2cc5 JK |
496 | return nr_free; |
497 | } | |
498 | ||
499 | void truncate_data_blocks(struct dnode_of_data *dn) | |
500 | { | |
501 | truncate_data_blocks_range(dn, ADDRS_PER_BLOCK); | |
502 | } | |
503 | ||
0bfcfcca | 504 | static int truncate_partial_data_page(struct inode *inode, u64 from, |
43f3eae1 | 505 | bool cache_only) |
fbfa2cc5 JK |
506 | { |
507 | unsigned offset = from & (PAGE_CACHE_SIZE - 1); | |
43f3eae1 JK |
508 | pgoff_t index = from >> PAGE_CACHE_SHIFT; |
509 | struct address_space *mapping = inode->i_mapping; | |
fbfa2cc5 JK |
510 | struct page *page; |
511 | ||
43f3eae1 | 512 | if (!offset && !cache_only) |
b3d208f9 | 513 | return 0; |
fbfa2cc5 | 514 | |
43f3eae1 | 515 | if (cache_only) { |
a56c7c6f | 516 | page = f2fs_grab_cache_page(mapping, index, false); |
43f3eae1 JK |
517 | if (page && PageUptodate(page)) |
518 | goto truncate_out; | |
519 | f2fs_put_page(page, 1); | |
b3d208f9 | 520 | return 0; |
43f3eae1 | 521 | } |
fbfa2cc5 | 522 | |
a56c7c6f | 523 | page = get_lock_data_page(inode, index, true); |
43f3eae1 JK |
524 | if (IS_ERR(page)) |
525 | return 0; | |
526 | truncate_out: | |
fec1d657 | 527 | f2fs_wait_on_page_writeback(page, DATA, true); |
fbfa2cc5 | 528 | zero_user(page, offset, PAGE_CACHE_SIZE - offset); |
0b81d077 JK |
529 | if (!cache_only || !f2fs_encrypted_inode(inode) || |
530 | !S_ISREG(inode->i_mode)) | |
0bfcfcca | 531 | set_page_dirty(page); |
fbfa2cc5 | 532 | f2fs_put_page(page, 1); |
b3d208f9 | 533 | return 0; |
fbfa2cc5 JK |
534 | } |
535 | ||
764aa3e9 | 536 | int truncate_blocks(struct inode *inode, u64 from, bool lock) |
fbfa2cc5 | 537 | { |
4081363f | 538 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
fbfa2cc5 JK |
539 | unsigned int blocksize = inode->i_sb->s_blocksize; |
540 | struct dnode_of_data dn; | |
541 | pgoff_t free_from; | |
9ffe0fb5 | 542 | int count = 0, err = 0; |
b3d208f9 | 543 | struct page *ipage; |
0bfcfcca | 544 | bool truncate_page = false; |
fbfa2cc5 | 545 | |
51dd6249 NJ |
546 | trace_f2fs_truncate_blocks_enter(inode, from); |
547 | ||
f7ef9b83 | 548 | free_from = (pgoff_t)F2FS_BYTES_TO_BLK(from + blocksize - 1); |
fbfa2cc5 | 549 | |
764aa3e9 JK |
550 | if (lock) |
551 | f2fs_lock_op(sbi); | |
9ffe0fb5 | 552 | |
b3d208f9 JK |
553 | ipage = get_node_page(sbi, inode->i_ino); |
554 | if (IS_ERR(ipage)) { | |
555 | err = PTR_ERR(ipage); | |
556 | goto out; | |
557 | } | |
558 | ||
559 | if (f2fs_has_inline_data(inode)) { | |
0bfcfcca CY |
560 | if (truncate_inline_inode(ipage, from)) |
561 | set_page_dirty(ipage); | |
b3d208f9 | 562 | f2fs_put_page(ipage, 1); |
0bfcfcca | 563 | truncate_page = true; |
b3d208f9 JK |
564 | goto out; |
565 | } | |
566 | ||
567 | set_new_dnode(&dn, inode, ipage, NULL, 0); | |
266e97a8 | 568 | err = get_dnode_of_data(&dn, free_from, LOOKUP_NODE); |
fbfa2cc5 JK |
569 | if (err) { |
570 | if (err == -ENOENT) | |
571 | goto free_next; | |
b3d208f9 | 572 | goto out; |
1ce86bf6 JK |
573 | } |
574 | ||
81ca7350 | 575 | count = ADDRS_PER_PAGE(dn.node_page, inode); |
fbfa2cc5 JK |
576 | |
577 | count -= dn.ofs_in_node; | |
9850cf4a | 578 | f2fs_bug_on(sbi, count < 0); |
39936837 | 579 | |
fbfa2cc5 JK |
580 | if (dn.ofs_in_node || IS_INODE(dn.node_page)) { |
581 | truncate_data_blocks_range(&dn, count); | |
582 | free_from += count; | |
583 | } | |
584 | ||
585 | f2fs_put_dnode(&dn); | |
586 | free_next: | |
587 | err = truncate_inode_blocks(inode, free_from); | |
764d2c80 JK |
588 | out: |
589 | if (lock) | |
590 | f2fs_unlock_op(sbi); | |
b3d208f9 JK |
591 | |
592 | /* lastly zero out the first data page */ | |
593 | if (!err) | |
0bfcfcca | 594 | err = truncate_partial_data_page(inode, from, truncate_page); |
fbfa2cc5 | 595 | |
51dd6249 | 596 | trace_f2fs_truncate_blocks_exit(inode, err); |
fbfa2cc5 JK |
597 | return err; |
598 | } | |
599 | ||
b0154891 | 600 | int f2fs_truncate(struct inode *inode, bool lock) |
fbfa2cc5 | 601 | { |
b0154891 CY |
602 | int err; |
603 | ||
fbfa2cc5 JK |
604 | if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) || |
605 | S_ISLNK(inode->i_mode))) | |
b0154891 | 606 | return 0; |
fbfa2cc5 | 607 | |
51dd6249 NJ |
608 | trace_f2fs_truncate(inode); |
609 | ||
92dffd01 | 610 | /* we should check inline_data size */ |
b9d777b8 | 611 | if (!f2fs_may_inline_data(inode)) { |
b0154891 CY |
612 | err = f2fs_convert_inline_inode(inode); |
613 | if (err) | |
614 | return err; | |
92dffd01 JK |
615 | } |
616 | ||
b0154891 CY |
617 | err = truncate_blocks(inode, i_size_read(inode), lock); |
618 | if (err) | |
619 | return err; | |
620 | ||
621 | inode->i_mtime = inode->i_ctime = CURRENT_TIME; | |
622 | mark_inode_dirty(inode); | |
623 | return 0; | |
fbfa2cc5 JK |
624 | } |
625 | ||
2d4d9fb5 | 626 | int f2fs_getattr(struct vfsmount *mnt, |
fbfa2cc5 JK |
627 | struct dentry *dentry, struct kstat *stat) |
628 | { | |
2b0143b5 | 629 | struct inode *inode = d_inode(dentry); |
fbfa2cc5 JK |
630 | generic_fillattr(inode, stat); |
631 | stat->blocks <<= 3; | |
632 | return 0; | |
633 | } | |
634 | ||
635 | #ifdef CONFIG_F2FS_FS_POSIX_ACL | |
636 | static void __setattr_copy(struct inode *inode, const struct iattr *attr) | |
637 | { | |
638 | struct f2fs_inode_info *fi = F2FS_I(inode); | |
639 | unsigned int ia_valid = attr->ia_valid; | |
640 | ||
641 | if (ia_valid & ATTR_UID) | |
642 | inode->i_uid = attr->ia_uid; | |
643 | if (ia_valid & ATTR_GID) | |
644 | inode->i_gid = attr->ia_gid; | |
645 | if (ia_valid & ATTR_ATIME) | |
646 | inode->i_atime = timespec_trunc(attr->ia_atime, | |
647 | inode->i_sb->s_time_gran); | |
648 | if (ia_valid & ATTR_MTIME) | |
649 | inode->i_mtime = timespec_trunc(attr->ia_mtime, | |
650 | inode->i_sb->s_time_gran); | |
651 | if (ia_valid & ATTR_CTIME) | |
652 | inode->i_ctime = timespec_trunc(attr->ia_ctime, | |
653 | inode->i_sb->s_time_gran); | |
654 | if (ia_valid & ATTR_MODE) { | |
655 | umode_t mode = attr->ia_mode; | |
656 | ||
657 | if (!in_group_p(inode->i_gid) && !capable(CAP_FSETID)) | |
658 | mode &= ~S_ISGID; | |
659 | set_acl_inode(fi, mode); | |
660 | } | |
661 | } | |
662 | #else | |
663 | #define __setattr_copy setattr_copy | |
664 | #endif | |
665 | ||
666 | int f2fs_setattr(struct dentry *dentry, struct iattr *attr) | |
667 | { | |
2b0143b5 | 668 | struct inode *inode = d_inode(dentry); |
fbfa2cc5 JK |
669 | struct f2fs_inode_info *fi = F2FS_I(inode); |
670 | int err; | |
671 | ||
672 | err = inode_change_ok(inode, attr); | |
673 | if (err) | |
674 | return err; | |
675 | ||
09db6a2e | 676 | if (attr->ia_valid & ATTR_SIZE) { |
fcc85a4d | 677 | if (f2fs_encrypted_inode(inode) && |
0b81d077 | 678 | fscrypt_get_encryption_info(inode)) |
fcc85a4d JK |
679 | return -EACCES; |
680 | ||
3c454145 | 681 | if (attr->ia_size <= i_size_read(inode)) { |
09db6a2e | 682 | truncate_setsize(inode, attr->ia_size); |
b0154891 CY |
683 | err = f2fs_truncate(inode, true); |
684 | if (err) | |
685 | return err; | |
2c4db1a6 | 686 | f2fs_balance_fs(F2FS_I_SB(inode), true); |
09db6a2e CY |
687 | } else { |
688 | /* | |
3c454145 CY |
689 | * do not trim all blocks after i_size if target size is |
690 | * larger than i_size. | |
09db6a2e | 691 | */ |
3c454145 | 692 | truncate_setsize(inode, attr->ia_size); |
0cab80ee CY |
693 | |
694 | /* should convert inline inode here */ | |
b9d777b8 | 695 | if (!f2fs_may_inline_data(inode)) { |
0cab80ee CY |
696 | err = f2fs_convert_inline_inode(inode); |
697 | if (err) | |
698 | return err; | |
699 | } | |
345a6b2e | 700 | inode->i_mtime = inode->i_ctime = CURRENT_TIME; |
09db6a2e | 701 | } |
fbfa2cc5 JK |
702 | } |
703 | ||
704 | __setattr_copy(inode, attr); | |
705 | ||
706 | if (attr->ia_valid & ATTR_MODE) { | |
a6dda0e6 | 707 | err = posix_acl_chmod(inode, get_inode_mode(inode)); |
fbfa2cc5 JK |
708 | if (err || is_inode_flag_set(fi, FI_ACL_MODE)) { |
709 | inode->i_mode = fi->i_acl_mode; | |
710 | clear_inode_flag(fi, FI_ACL_MODE); | |
711 | } | |
712 | } | |
713 | ||
714 | mark_inode_dirty(inode); | |
715 | return err; | |
716 | } | |
717 | ||
718 | const struct inode_operations f2fs_file_inode_operations = { | |
719 | .getattr = f2fs_getattr, | |
720 | .setattr = f2fs_setattr, | |
721 | .get_acl = f2fs_get_acl, | |
a6dda0e6 | 722 | .set_acl = f2fs_set_acl, |
fbfa2cc5 JK |
723 | #ifdef CONFIG_F2FS_FS_XATTR |
724 | .setxattr = generic_setxattr, | |
725 | .getxattr = generic_getxattr, | |
726 | .listxattr = f2fs_listxattr, | |
727 | .removexattr = generic_removexattr, | |
728 | #endif | |
9ab70134 | 729 | .fiemap = f2fs_fiemap, |
fbfa2cc5 JK |
730 | }; |
731 | ||
6394328a | 732 | static int fill_zero(struct inode *inode, pgoff_t index, |
fbfa2cc5 JK |
733 | loff_t start, loff_t len) |
734 | { | |
4081363f | 735 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
fbfa2cc5 JK |
736 | struct page *page; |
737 | ||
738 | if (!len) | |
6394328a | 739 | return 0; |
fbfa2cc5 | 740 | |
2c4db1a6 | 741 | f2fs_balance_fs(sbi, true); |
bd43df02 | 742 | |
e479556b | 743 | f2fs_lock_op(sbi); |
64aa7ed9 | 744 | page = get_new_data_page(inode, NULL, index, false); |
e479556b | 745 | f2fs_unlock_op(sbi); |
fbfa2cc5 | 746 | |
6394328a CY |
747 | if (IS_ERR(page)) |
748 | return PTR_ERR(page); | |
749 | ||
fec1d657 | 750 | f2fs_wait_on_page_writeback(page, DATA, true); |
6394328a CY |
751 | zero_user(page, start, len); |
752 | set_page_dirty(page); | |
753 | f2fs_put_page(page, 1); | |
754 | return 0; | |
fbfa2cc5 JK |
755 | } |
756 | ||
757 | int truncate_hole(struct inode *inode, pgoff_t pg_start, pgoff_t pg_end) | |
758 | { | |
fbfa2cc5 JK |
759 | int err; |
760 | ||
ea58711e | 761 | while (pg_start < pg_end) { |
fbfa2cc5 | 762 | struct dnode_of_data dn; |
ea58711e | 763 | pgoff_t end_offset, count; |
9eaeba70 | 764 | |
fbfa2cc5 | 765 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
ea58711e | 766 | err = get_dnode_of_data(&dn, pg_start, LOOKUP_NODE); |
fbfa2cc5 | 767 | if (err) { |
ea58711e CY |
768 | if (err == -ENOENT) { |
769 | pg_start++; | |
fbfa2cc5 | 770 | continue; |
ea58711e | 771 | } |
fbfa2cc5 JK |
772 | return err; |
773 | } | |
774 | ||
81ca7350 | 775 | end_offset = ADDRS_PER_PAGE(dn.node_page, inode); |
ea58711e CY |
776 | count = min(end_offset - dn.ofs_in_node, pg_end - pg_start); |
777 | ||
778 | f2fs_bug_on(F2FS_I_SB(inode), count == 0 || count > end_offset); | |
779 | ||
780 | truncate_data_blocks_range(&dn, count); | |
fbfa2cc5 | 781 | f2fs_put_dnode(&dn); |
ea58711e CY |
782 | |
783 | pg_start += count; | |
fbfa2cc5 JK |
784 | } |
785 | return 0; | |
786 | } | |
787 | ||
a66c7b2f | 788 | static int punch_hole(struct inode *inode, loff_t offset, loff_t len) |
fbfa2cc5 JK |
789 | { |
790 | pgoff_t pg_start, pg_end; | |
791 | loff_t off_start, off_end; | |
b9d777b8 | 792 | int ret; |
fbfa2cc5 | 793 | |
b9d777b8 JK |
794 | ret = f2fs_convert_inline_inode(inode); |
795 | if (ret) | |
796 | return ret; | |
9ffe0fb5 | 797 | |
fbfa2cc5 JK |
798 | pg_start = ((unsigned long long) offset) >> PAGE_CACHE_SHIFT; |
799 | pg_end = ((unsigned long long) offset + len) >> PAGE_CACHE_SHIFT; | |
800 | ||
801 | off_start = offset & (PAGE_CACHE_SIZE - 1); | |
802 | off_end = (offset + len) & (PAGE_CACHE_SIZE - 1); | |
803 | ||
804 | if (pg_start == pg_end) { | |
6394328a | 805 | ret = fill_zero(inode, pg_start, off_start, |
fbfa2cc5 | 806 | off_end - off_start); |
6394328a CY |
807 | if (ret) |
808 | return ret; | |
fbfa2cc5 | 809 | } else { |
6394328a CY |
810 | if (off_start) { |
811 | ret = fill_zero(inode, pg_start++, off_start, | |
812 | PAGE_CACHE_SIZE - off_start); | |
813 | if (ret) | |
814 | return ret; | |
815 | } | |
816 | if (off_end) { | |
817 | ret = fill_zero(inode, pg_end, 0, off_end); | |
818 | if (ret) | |
819 | return ret; | |
820 | } | |
fbfa2cc5 JK |
821 | |
822 | if (pg_start < pg_end) { | |
823 | struct address_space *mapping = inode->i_mapping; | |
824 | loff_t blk_start, blk_end; | |
4081363f | 825 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
1127a3d4 | 826 | |
2c4db1a6 | 827 | f2fs_balance_fs(sbi, true); |
fbfa2cc5 | 828 | |
9edcdabf CY |
829 | blk_start = (loff_t)pg_start << PAGE_CACHE_SHIFT; |
830 | blk_end = (loff_t)pg_end << PAGE_CACHE_SHIFT; | |
fbfa2cc5 JK |
831 | truncate_inode_pages_range(mapping, blk_start, |
832 | blk_end - 1); | |
39936837 | 833 | |
e479556b | 834 | f2fs_lock_op(sbi); |
fbfa2cc5 | 835 | ret = truncate_hole(inode, pg_start, pg_end); |
e479556b | 836 | f2fs_unlock_op(sbi); |
fbfa2cc5 JK |
837 | } |
838 | } | |
839 | ||
fbfa2cc5 JK |
840 | return ret; |
841 | } | |
842 | ||
6e2c64ad JK |
843 | static int __exchange_data_block(struct inode *inode, pgoff_t src, |
844 | pgoff_t dst, bool full) | |
b4ace337 CY |
845 | { |
846 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
847 | struct dnode_of_data dn; | |
6e2c64ad JK |
848 | block_t new_addr; |
849 | bool do_replace = false; | |
850 | int ret; | |
ecbaa406 | 851 | |
6e2c64ad JK |
852 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
853 | ret = get_dnode_of_data(&dn, src, LOOKUP_NODE_RA); | |
854 | if (ret && ret != -ENOENT) { | |
855 | return ret; | |
856 | } else if (ret == -ENOENT) { | |
857 | new_addr = NULL_ADDR; | |
858 | } else { | |
859 | new_addr = dn.data_blkaddr; | |
860 | if (!is_checkpointed_data(sbi, new_addr)) { | |
6e2c64ad | 861 | /* do not invalidate this block address */ |
f28b3434 | 862 | f2fs_update_data_blkaddr(&dn, NULL_ADDR); |
6e2c64ad | 863 | do_replace = true; |
b4ace337 | 864 | } |
6e2c64ad JK |
865 | f2fs_put_dnode(&dn); |
866 | } | |
b4ace337 | 867 | |
6e2c64ad JK |
868 | if (new_addr == NULL_ADDR) |
869 | return full ? truncate_hole(inode, dst, dst + 1) : 0; | |
b4ace337 | 870 | |
6e2c64ad JK |
871 | if (do_replace) { |
872 | struct page *ipage = get_node_page(sbi, inode->i_ino); | |
873 | struct node_info ni; | |
b4ace337 | 874 | |
6e2c64ad JK |
875 | if (IS_ERR(ipage)) { |
876 | ret = PTR_ERR(ipage); | |
877 | goto err_out; | |
878 | } | |
b4ace337 | 879 | |
6e2c64ad JK |
880 | set_new_dnode(&dn, inode, ipage, NULL, 0); |
881 | ret = f2fs_reserve_block(&dn, dst); | |
882 | if (ret) | |
883 | goto err_out; | |
b4ace337 | 884 | |
6e2c64ad | 885 | truncate_data_blocks_range(&dn, 1); |
b4ace337 | 886 | |
6e2c64ad JK |
887 | get_node_info(sbi, dn.nid, &ni); |
888 | f2fs_replace_block(sbi, &dn, dn.data_blkaddr, new_addr, | |
28bc106b | 889 | ni.version, true, false); |
6e2c64ad JK |
890 | f2fs_put_dnode(&dn); |
891 | } else { | |
892 | struct page *psrc, *pdst; | |
893 | ||
a56c7c6f | 894 | psrc = get_lock_data_page(inode, src, true); |
6e2c64ad JK |
895 | if (IS_ERR(psrc)) |
896 | return PTR_ERR(psrc); | |
8ef2af45 | 897 | pdst = get_new_data_page(inode, NULL, dst, true); |
6e2c64ad JK |
898 | if (IS_ERR(pdst)) { |
899 | f2fs_put_page(psrc, 1); | |
900 | return PTR_ERR(pdst); | |
901 | } | |
902 | f2fs_copy_page(psrc, pdst); | |
903 | set_page_dirty(pdst); | |
904 | f2fs_put_page(pdst, 1); | |
905 | f2fs_put_page(psrc, 1); | |
b4ace337 | 906 | |
6e2c64ad JK |
907 | return truncate_hole(inode, src, src + 1); |
908 | } | |
909 | return 0; | |
b4ace337 | 910 | |
6e2c64ad JK |
911 | err_out: |
912 | if (!get_dnode_of_data(&dn, src, LOOKUP_NODE)) { | |
f28b3434 | 913 | f2fs_update_data_blkaddr(&dn, new_addr); |
6e2c64ad JK |
914 | f2fs_put_dnode(&dn); |
915 | } | |
916 | return ret; | |
917 | } | |
b4ace337 | 918 | |
6e2c64ad JK |
919 | static int f2fs_do_collapse(struct inode *inode, pgoff_t start, pgoff_t end) |
920 | { | |
921 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
922 | pgoff_t nrpages = (i_size_read(inode) + PAGE_SIZE - 1) / PAGE_SIZE; | |
923 | int ret = 0; | |
924 | ||
925 | for (; end < nrpages; start++, end++) { | |
2c4db1a6 | 926 | f2fs_balance_fs(sbi, true); |
6e2c64ad JK |
927 | f2fs_lock_op(sbi); |
928 | ret = __exchange_data_block(inode, end, start, true); | |
ecbaa406 | 929 | f2fs_unlock_op(sbi); |
6e2c64ad JK |
930 | if (ret) |
931 | break; | |
b4ace337 | 932 | } |
b4ace337 CY |
933 | return ret; |
934 | } | |
935 | ||
936 | static int f2fs_collapse_range(struct inode *inode, loff_t offset, loff_t len) | |
937 | { | |
938 | pgoff_t pg_start, pg_end; | |
939 | loff_t new_size; | |
940 | int ret; | |
941 | ||
b4ace337 CY |
942 | if (offset + len >= i_size_read(inode)) |
943 | return -EINVAL; | |
944 | ||
945 | /* collapse range should be aligned to block size of f2fs. */ | |
946 | if (offset & (F2FS_BLKSIZE - 1) || len & (F2FS_BLKSIZE - 1)) | |
947 | return -EINVAL; | |
948 | ||
b9d777b8 JK |
949 | ret = f2fs_convert_inline_inode(inode); |
950 | if (ret) | |
951 | return ret; | |
97a7b2c2 | 952 | |
b4ace337 CY |
953 | pg_start = offset >> PAGE_CACHE_SHIFT; |
954 | pg_end = (offset + len) >> PAGE_CACHE_SHIFT; | |
955 | ||
956 | /* write out all dirty pages from offset */ | |
957 | ret = filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX); | |
958 | if (ret) | |
959 | return ret; | |
960 | ||
961 | truncate_pagecache(inode, offset); | |
962 | ||
963 | ret = f2fs_do_collapse(inode, pg_start, pg_end); | |
964 | if (ret) | |
965 | return ret; | |
966 | ||
6e2c64ad JK |
967 | /* write out all moved pages, if possible */ |
968 | filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX); | |
969 | truncate_pagecache(inode, offset); | |
970 | ||
b4ace337 | 971 | new_size = i_size_read(inode) - len; |
6e2c64ad | 972 | truncate_pagecache(inode, new_size); |
b4ace337 CY |
973 | |
974 | ret = truncate_blocks(inode, new_size, true); | |
975 | if (!ret) | |
976 | i_size_write(inode, new_size); | |
977 | ||
978 | return ret; | |
979 | } | |
980 | ||
75cd4e09 CY |
981 | static int f2fs_zero_range(struct inode *inode, loff_t offset, loff_t len, |
982 | int mode) | |
983 | { | |
984 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
985 | struct address_space *mapping = inode->i_mapping; | |
986 | pgoff_t index, pg_start, pg_end; | |
987 | loff_t new_size = i_size_read(inode); | |
988 | loff_t off_start, off_end; | |
989 | int ret = 0; | |
990 | ||
75cd4e09 CY |
991 | ret = inode_newsize_ok(inode, (len + offset)); |
992 | if (ret) | |
993 | return ret; | |
994 | ||
b9d777b8 JK |
995 | ret = f2fs_convert_inline_inode(inode); |
996 | if (ret) | |
997 | return ret; | |
75cd4e09 CY |
998 | |
999 | ret = filemap_write_and_wait_range(mapping, offset, offset + len - 1); | |
1000 | if (ret) | |
1001 | return ret; | |
1002 | ||
1003 | truncate_pagecache_range(inode, offset, offset + len - 1); | |
1004 | ||
1005 | pg_start = ((unsigned long long) offset) >> PAGE_CACHE_SHIFT; | |
1006 | pg_end = ((unsigned long long) offset + len) >> PAGE_CACHE_SHIFT; | |
1007 | ||
1008 | off_start = offset & (PAGE_CACHE_SIZE - 1); | |
1009 | off_end = (offset + len) & (PAGE_CACHE_SIZE - 1); | |
1010 | ||
1011 | if (pg_start == pg_end) { | |
6394328a CY |
1012 | ret = fill_zero(inode, pg_start, off_start, |
1013 | off_end - off_start); | |
1014 | if (ret) | |
1015 | return ret; | |
1016 | ||
75cd4e09 CY |
1017 | if (offset + len > new_size) |
1018 | new_size = offset + len; | |
1019 | new_size = max_t(loff_t, new_size, offset + len); | |
1020 | } else { | |
1021 | if (off_start) { | |
6394328a CY |
1022 | ret = fill_zero(inode, pg_start++, off_start, |
1023 | PAGE_CACHE_SIZE - off_start); | |
1024 | if (ret) | |
1025 | return ret; | |
1026 | ||
75cd4e09 | 1027 | new_size = max_t(loff_t, new_size, |
9edcdabf | 1028 | (loff_t)pg_start << PAGE_CACHE_SHIFT); |
75cd4e09 CY |
1029 | } |
1030 | ||
1031 | for (index = pg_start; index < pg_end; index++) { | |
1032 | struct dnode_of_data dn; | |
1033 | struct page *ipage; | |
1034 | ||
1035 | f2fs_lock_op(sbi); | |
1036 | ||
1037 | ipage = get_node_page(sbi, inode->i_ino); | |
1038 | if (IS_ERR(ipage)) { | |
1039 | ret = PTR_ERR(ipage); | |
1040 | f2fs_unlock_op(sbi); | |
1041 | goto out; | |
1042 | } | |
1043 | ||
1044 | set_new_dnode(&dn, inode, ipage, NULL, 0); | |
1045 | ret = f2fs_reserve_block(&dn, index); | |
1046 | if (ret) { | |
1047 | f2fs_unlock_op(sbi); | |
1048 | goto out; | |
1049 | } | |
1050 | ||
1051 | if (dn.data_blkaddr != NEW_ADDR) { | |
1052 | invalidate_blocks(sbi, dn.data_blkaddr); | |
f28b3434 | 1053 | f2fs_update_data_blkaddr(&dn, NEW_ADDR); |
75cd4e09 CY |
1054 | } |
1055 | f2fs_put_dnode(&dn); | |
1056 | f2fs_unlock_op(sbi); | |
1057 | ||
1058 | new_size = max_t(loff_t, new_size, | |
9edcdabf | 1059 | (loff_t)(index + 1) << PAGE_CACHE_SHIFT); |
75cd4e09 CY |
1060 | } |
1061 | ||
1062 | if (off_end) { | |
6394328a CY |
1063 | ret = fill_zero(inode, pg_end, 0, off_end); |
1064 | if (ret) | |
1065 | goto out; | |
1066 | ||
75cd4e09 CY |
1067 | new_size = max_t(loff_t, new_size, offset + len); |
1068 | } | |
1069 | } | |
1070 | ||
1071 | out: | |
1072 | if (!(mode & FALLOC_FL_KEEP_SIZE) && i_size_read(inode) < new_size) { | |
1073 | i_size_write(inode, new_size); | |
1074 | mark_inode_dirty(inode); | |
1075 | update_inode_page(inode); | |
1076 | } | |
1077 | ||
1078 | return ret; | |
1079 | } | |
1080 | ||
f62185d0 CY |
1081 | static int f2fs_insert_range(struct inode *inode, loff_t offset, loff_t len) |
1082 | { | |
1083 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
1084 | pgoff_t pg_start, pg_end, delta, nrpages, idx; | |
1085 | loff_t new_size; | |
6e2c64ad | 1086 | int ret = 0; |
f62185d0 | 1087 | |
f62185d0 CY |
1088 | new_size = i_size_read(inode) + len; |
1089 | if (new_size > inode->i_sb->s_maxbytes) | |
1090 | return -EFBIG; | |
1091 | ||
1092 | if (offset >= i_size_read(inode)) | |
1093 | return -EINVAL; | |
1094 | ||
1095 | /* insert range should be aligned to block size of f2fs. */ | |
1096 | if (offset & (F2FS_BLKSIZE - 1) || len & (F2FS_BLKSIZE - 1)) | |
1097 | return -EINVAL; | |
1098 | ||
b9d777b8 JK |
1099 | ret = f2fs_convert_inline_inode(inode); |
1100 | if (ret) | |
1101 | return ret; | |
97a7b2c2 | 1102 | |
2c4db1a6 | 1103 | f2fs_balance_fs(sbi, true); |
2a340760 | 1104 | |
f62185d0 CY |
1105 | ret = truncate_blocks(inode, i_size_read(inode), true); |
1106 | if (ret) | |
1107 | return ret; | |
1108 | ||
1109 | /* write out all dirty pages from offset */ | |
1110 | ret = filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX); | |
1111 | if (ret) | |
1112 | return ret; | |
1113 | ||
1114 | truncate_pagecache(inode, offset); | |
1115 | ||
1116 | pg_start = offset >> PAGE_CACHE_SHIFT; | |
1117 | pg_end = (offset + len) >> PAGE_CACHE_SHIFT; | |
1118 | delta = pg_end - pg_start; | |
1119 | nrpages = (i_size_read(inode) + PAGE_SIZE - 1) / PAGE_SIZE; | |
1120 | ||
1121 | for (idx = nrpages - 1; idx >= pg_start && idx != -1; idx--) { | |
f62185d0 | 1122 | f2fs_lock_op(sbi); |
6e2c64ad | 1123 | ret = __exchange_data_block(inode, idx, idx + delta, false); |
f62185d0 | 1124 | f2fs_unlock_op(sbi); |
6e2c64ad JK |
1125 | if (ret) |
1126 | break; | |
f62185d0 CY |
1127 | } |
1128 | ||
6e2c64ad JK |
1129 | /* write out all moved pages, if possible */ |
1130 | filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX); | |
1131 | truncate_pagecache(inode, offset); | |
1132 | ||
1133 | if (!ret) | |
1134 | i_size_write(inode, new_size); | |
f62185d0 CY |
1135 | return ret; |
1136 | } | |
1137 | ||
fbfa2cc5 JK |
1138 | static int expand_inode_data(struct inode *inode, loff_t offset, |
1139 | loff_t len, int mode) | |
1140 | { | |
4081363f | 1141 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
fbfa2cc5 JK |
1142 | pgoff_t index, pg_start, pg_end; |
1143 | loff_t new_size = i_size_read(inode); | |
1144 | loff_t off_start, off_end; | |
1145 | int ret = 0; | |
1146 | ||
1147 | ret = inode_newsize_ok(inode, (len + offset)); | |
1148 | if (ret) | |
1149 | return ret; | |
1150 | ||
b9d777b8 JK |
1151 | ret = f2fs_convert_inline_inode(inode); |
1152 | if (ret) | |
1153 | return ret; | |
9e09fc85 | 1154 | |
2c4db1a6 | 1155 | f2fs_balance_fs(sbi, true); |
2a340760 | 1156 | |
fbfa2cc5 JK |
1157 | pg_start = ((unsigned long long) offset) >> PAGE_CACHE_SHIFT; |
1158 | pg_end = ((unsigned long long) offset + len) >> PAGE_CACHE_SHIFT; | |
1159 | ||
1160 | off_start = offset & (PAGE_CACHE_SIZE - 1); | |
1161 | off_end = (offset + len) & (PAGE_CACHE_SIZE - 1); | |
1162 | ||
ead43275 JK |
1163 | f2fs_lock_op(sbi); |
1164 | ||
fbfa2cc5 JK |
1165 | for (index = pg_start; index <= pg_end; index++) { |
1166 | struct dnode_of_data dn; | |
1167 | ||
98397ff3 JK |
1168 | if (index == pg_end && !off_end) |
1169 | goto noalloc; | |
1170 | ||
fbfa2cc5 | 1171 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
b600965c | 1172 | ret = f2fs_reserve_block(&dn, index); |
b600965c | 1173 | if (ret) |
fbfa2cc5 | 1174 | break; |
98397ff3 | 1175 | noalloc: |
fbfa2cc5 JK |
1176 | if (pg_start == pg_end) |
1177 | new_size = offset + len; | |
1178 | else if (index == pg_start && off_start) | |
9edcdabf | 1179 | new_size = (loff_t)(index + 1) << PAGE_CACHE_SHIFT; |
fbfa2cc5 | 1180 | else if (index == pg_end) |
9edcdabf CY |
1181 | new_size = ((loff_t)index << PAGE_CACHE_SHIFT) + |
1182 | off_end; | |
fbfa2cc5 JK |
1183 | else |
1184 | new_size += PAGE_CACHE_SIZE; | |
1185 | } | |
1186 | ||
1187 | if (!(mode & FALLOC_FL_KEEP_SIZE) && | |
1188 | i_size_read(inode) < new_size) { | |
1189 | i_size_write(inode, new_size); | |
1190 | mark_inode_dirty(inode); | |
ead43275 | 1191 | update_inode_page(inode); |
fbfa2cc5 | 1192 | } |
ead43275 | 1193 | f2fs_unlock_op(sbi); |
fbfa2cc5 JK |
1194 | |
1195 | return ret; | |
1196 | } | |
1197 | ||
1198 | static long f2fs_fallocate(struct file *file, int mode, | |
1199 | loff_t offset, loff_t len) | |
1200 | { | |
6131ffaa | 1201 | struct inode *inode = file_inode(file); |
587c0a42 | 1202 | long ret = 0; |
fbfa2cc5 | 1203 | |
c998012b CY |
1204 | /* f2fs only support ->fallocate for regular file */ |
1205 | if (!S_ISREG(inode->i_mode)) | |
1206 | return -EINVAL; | |
1207 | ||
f62185d0 CY |
1208 | if (f2fs_encrypted_inode(inode) && |
1209 | (mode & (FALLOC_FL_COLLAPSE_RANGE | FALLOC_FL_INSERT_RANGE))) | |
fcc85a4d JK |
1210 | return -EOPNOTSUPP; |
1211 | ||
b4ace337 | 1212 | if (mode & ~(FALLOC_FL_KEEP_SIZE | FALLOC_FL_PUNCH_HOLE | |
f62185d0 CY |
1213 | FALLOC_FL_COLLAPSE_RANGE | FALLOC_FL_ZERO_RANGE | |
1214 | FALLOC_FL_INSERT_RANGE)) | |
fbfa2cc5 JK |
1215 | return -EOPNOTSUPP; |
1216 | ||
5955102c | 1217 | inode_lock(inode); |
3375f696 | 1218 | |
587c0a42 TY |
1219 | if (mode & FALLOC_FL_PUNCH_HOLE) { |
1220 | if (offset >= inode->i_size) | |
1221 | goto out; | |
1222 | ||
a66c7b2f | 1223 | ret = punch_hole(inode, offset, len); |
b4ace337 CY |
1224 | } else if (mode & FALLOC_FL_COLLAPSE_RANGE) { |
1225 | ret = f2fs_collapse_range(inode, offset, len); | |
75cd4e09 CY |
1226 | } else if (mode & FALLOC_FL_ZERO_RANGE) { |
1227 | ret = f2fs_zero_range(inode, offset, len, mode); | |
f62185d0 CY |
1228 | } else if (mode & FALLOC_FL_INSERT_RANGE) { |
1229 | ret = f2fs_insert_range(inode, offset, len); | |
b4ace337 | 1230 | } else { |
fbfa2cc5 | 1231 | ret = expand_inode_data(inode, offset, len, mode); |
b4ace337 | 1232 | } |
fbfa2cc5 | 1233 | |
3af60a49 NJ |
1234 | if (!ret) { |
1235 | inode->i_mtime = inode->i_ctime = CURRENT_TIME; | |
1236 | mark_inode_dirty(inode); | |
d0239e1b | 1237 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); |
3af60a49 | 1238 | } |
3375f696 | 1239 | |
587c0a42 | 1240 | out: |
5955102c | 1241 | inode_unlock(inode); |
3375f696 | 1242 | |
c01e2853 | 1243 | trace_f2fs_fallocate(inode, mode, offset, len, ret); |
fbfa2cc5 JK |
1244 | return ret; |
1245 | } | |
1246 | ||
1e84371f JK |
1247 | static int f2fs_release_file(struct inode *inode, struct file *filp) |
1248 | { | |
1249 | /* some remained atomic pages should discarded */ | |
1250 | if (f2fs_is_atomic_file(inode)) | |
29b96b54 | 1251 | drop_inmem_pages(inode); |
1e84371f JK |
1252 | if (f2fs_is_volatile_file(inode)) { |
1253 | set_inode_flag(F2FS_I(inode), FI_DROP_CACHE); | |
1254 | filemap_fdatawrite(inode->i_mapping); | |
1255 | clear_inode_flag(F2FS_I(inode), FI_DROP_CACHE); | |
1256 | } | |
1257 | return 0; | |
1258 | } | |
1259 | ||
fbfa2cc5 JK |
1260 | #define F2FS_REG_FLMASK (~(FS_DIRSYNC_FL | FS_TOPDIR_FL)) |
1261 | #define F2FS_OTHER_FLMASK (FS_NODUMP_FL | FS_NOATIME_FL) | |
1262 | ||
1263 | static inline __u32 f2fs_mask_flags(umode_t mode, __u32 flags) | |
1264 | { | |
1265 | if (S_ISDIR(mode)) | |
1266 | return flags; | |
1267 | else if (S_ISREG(mode)) | |
1268 | return flags & F2FS_REG_FLMASK; | |
1269 | else | |
1270 | return flags & F2FS_OTHER_FLMASK; | |
1271 | } | |
1272 | ||
52656e6c | 1273 | static int f2fs_ioc_getflags(struct file *filp, unsigned long arg) |
fbfa2cc5 | 1274 | { |
6131ffaa | 1275 | struct inode *inode = file_inode(filp); |
fbfa2cc5 | 1276 | struct f2fs_inode_info *fi = F2FS_I(inode); |
52656e6c JK |
1277 | unsigned int flags = fi->i_flags & FS_FL_USER_VISIBLE; |
1278 | return put_user(flags, (int __user *)arg); | |
1279 | } | |
fbfa2cc5 | 1280 | |
52656e6c JK |
1281 | static int f2fs_ioc_setflags(struct file *filp, unsigned long arg) |
1282 | { | |
1283 | struct inode *inode = file_inode(filp); | |
1284 | struct f2fs_inode_info *fi = F2FS_I(inode); | |
1285 | unsigned int flags = fi->i_flags & FS_FL_USER_VISIBLE; | |
1286 | unsigned int oldflags; | |
1287 | int ret; | |
fbfa2cc5 | 1288 | |
52656e6c JK |
1289 | ret = mnt_want_write_file(filp); |
1290 | if (ret) | |
1291 | return ret; | |
fbfa2cc5 | 1292 | |
52656e6c JK |
1293 | if (!inode_owner_or_capable(inode)) { |
1294 | ret = -EACCES; | |
1295 | goto out; | |
1296 | } | |
fbfa2cc5 | 1297 | |
52656e6c JK |
1298 | if (get_user(flags, (int __user *)arg)) { |
1299 | ret = -EFAULT; | |
1300 | goto out; | |
1301 | } | |
fbfa2cc5 | 1302 | |
52656e6c | 1303 | flags = f2fs_mask_flags(inode->i_mode, flags); |
fbfa2cc5 | 1304 | |
5955102c | 1305 | inode_lock(inode); |
fbfa2cc5 | 1306 | |
52656e6c | 1307 | oldflags = fi->i_flags; |
fbfa2cc5 | 1308 | |
52656e6c JK |
1309 | if ((flags ^ oldflags) & (FS_APPEND_FL | FS_IMMUTABLE_FL)) { |
1310 | if (!capable(CAP_LINUX_IMMUTABLE)) { | |
5955102c | 1311 | inode_unlock(inode); |
52656e6c JK |
1312 | ret = -EPERM; |
1313 | goto out; | |
fbfa2cc5 | 1314 | } |
52656e6c | 1315 | } |
fbfa2cc5 | 1316 | |
52656e6c JK |
1317 | flags = flags & FS_FL_USER_MODIFIABLE; |
1318 | flags |= oldflags & ~FS_FL_USER_MODIFIABLE; | |
1319 | fi->i_flags = flags; | |
5955102c | 1320 | inode_unlock(inode); |
fbfa2cc5 | 1321 | |
52656e6c JK |
1322 | f2fs_set_inode_flags(inode); |
1323 | inode->i_ctime = CURRENT_TIME; | |
1324 | mark_inode_dirty(inode); | |
fbfa2cc5 | 1325 | out: |
52656e6c JK |
1326 | mnt_drop_write_file(filp); |
1327 | return ret; | |
1328 | } | |
4b2fecc8 | 1329 | |
d49f3e89 CY |
1330 | static int f2fs_ioc_getversion(struct file *filp, unsigned long arg) |
1331 | { | |
1332 | struct inode *inode = file_inode(filp); | |
1333 | ||
1334 | return put_user(inode->i_generation, (int __user *)arg); | |
1335 | } | |
1336 | ||
88b88a66 JK |
1337 | static int f2fs_ioc_start_atomic_write(struct file *filp) |
1338 | { | |
1339 | struct inode *inode = file_inode(filp); | |
f4c9c743 | 1340 | int ret; |
88b88a66 JK |
1341 | |
1342 | if (!inode_owner_or_capable(inode)) | |
1343 | return -EACCES; | |
1344 | ||
1e84371f JK |
1345 | if (f2fs_is_atomic_file(inode)) |
1346 | return 0; | |
88b88a66 | 1347 | |
f4c9c743 CY |
1348 | ret = f2fs_convert_inline_inode(inode); |
1349 | if (ret) | |
1350 | return ret; | |
88b88a66 | 1351 | |
f4c9c743 | 1352 | set_inode_flag(F2FS_I(inode), FI_ATOMIC_FILE); |
d0239e1b JK |
1353 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); |
1354 | ||
f4c9c743 | 1355 | return 0; |
88b88a66 JK |
1356 | } |
1357 | ||
1358 | static int f2fs_ioc_commit_atomic_write(struct file *filp) | |
1359 | { | |
1360 | struct inode *inode = file_inode(filp); | |
1361 | int ret; | |
1362 | ||
1363 | if (!inode_owner_or_capable(inode)) | |
1364 | return -EACCES; | |
1365 | ||
02a1335f JK |
1366 | if (f2fs_is_volatile_file(inode)) |
1367 | return 0; | |
1368 | ||
88b88a66 JK |
1369 | ret = mnt_want_write_file(filp); |
1370 | if (ret) | |
1371 | return ret; | |
1372 | ||
6282adbf JK |
1373 | if (f2fs_is_atomic_file(inode)) { |
1374 | clear_inode_flag(F2FS_I(inode), FI_ATOMIC_FILE); | |
29b96b54 | 1375 | ret = commit_inmem_pages(inode); |
447135a8 JK |
1376 | if (ret) { |
1377 | set_inode_flag(F2FS_I(inode), FI_ATOMIC_FILE); | |
edb27dee | 1378 | goto err_out; |
447135a8 | 1379 | } |
6282adbf | 1380 | } |
88b88a66 | 1381 | |
a5f64b6a | 1382 | ret = f2fs_sync_file(filp, 0, LLONG_MAX, 0); |
edb27dee | 1383 | err_out: |
88b88a66 JK |
1384 | mnt_drop_write_file(filp); |
1385 | return ret; | |
1386 | } | |
1387 | ||
02a1335f JK |
1388 | static int f2fs_ioc_start_volatile_write(struct file *filp) |
1389 | { | |
1390 | struct inode *inode = file_inode(filp); | |
f4c9c743 | 1391 | int ret; |
02a1335f JK |
1392 | |
1393 | if (!inode_owner_or_capable(inode)) | |
1394 | return -EACCES; | |
1395 | ||
1e84371f JK |
1396 | if (f2fs_is_volatile_file(inode)) |
1397 | return 0; | |
1398 | ||
f4c9c743 CY |
1399 | ret = f2fs_convert_inline_inode(inode); |
1400 | if (ret) | |
1401 | return ret; | |
b3d208f9 | 1402 | |
f4c9c743 | 1403 | set_inode_flag(F2FS_I(inode), FI_VOLATILE_FILE); |
d0239e1b | 1404 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); |
f4c9c743 | 1405 | return 0; |
02a1335f JK |
1406 | } |
1407 | ||
1e84371f JK |
1408 | static int f2fs_ioc_release_volatile_write(struct file *filp) |
1409 | { | |
1410 | struct inode *inode = file_inode(filp); | |
1411 | ||
1412 | if (!inode_owner_or_capable(inode)) | |
1413 | return -EACCES; | |
1414 | ||
1415 | if (!f2fs_is_volatile_file(inode)) | |
1416 | return 0; | |
1417 | ||
3c6c2beb JK |
1418 | if (!f2fs_is_first_block_written(inode)) |
1419 | return truncate_partial_data_page(inode, 0, true); | |
1420 | ||
538e17e7 | 1421 | return punch_hole(inode, 0, F2FS_BLKSIZE); |
1e84371f JK |
1422 | } |
1423 | ||
1424 | static int f2fs_ioc_abort_volatile_write(struct file *filp) | |
1425 | { | |
1426 | struct inode *inode = file_inode(filp); | |
1427 | int ret; | |
1428 | ||
1429 | if (!inode_owner_or_capable(inode)) | |
1430 | return -EACCES; | |
1431 | ||
1432 | ret = mnt_want_write_file(filp); | |
1433 | if (ret) | |
1434 | return ret; | |
1435 | ||
732d5648 JK |
1436 | if (f2fs_is_atomic_file(inode)) { |
1437 | clear_inode_flag(F2FS_I(inode), FI_ATOMIC_FILE); | |
29b96b54 | 1438 | drop_inmem_pages(inode); |
732d5648 JK |
1439 | } |
1440 | if (f2fs_is_volatile_file(inode)) { | |
1441 | clear_inode_flag(F2FS_I(inode), FI_VOLATILE_FILE); | |
1442 | ret = f2fs_sync_file(filp, 0, LLONG_MAX, 0); | |
1443 | } | |
de6a8ec9 | 1444 | |
1e84371f | 1445 | mnt_drop_write_file(filp); |
d0239e1b | 1446 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); |
1e84371f JK |
1447 | return ret; |
1448 | } | |
1449 | ||
1abff93d JK |
1450 | static int f2fs_ioc_shutdown(struct file *filp, unsigned long arg) |
1451 | { | |
1452 | struct inode *inode = file_inode(filp); | |
1453 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
1454 | struct super_block *sb = sbi->sb; | |
1455 | __u32 in; | |
1456 | ||
1457 | if (!capable(CAP_SYS_ADMIN)) | |
1458 | return -EPERM; | |
1459 | ||
1460 | if (get_user(in, (__u32 __user *)arg)) | |
1461 | return -EFAULT; | |
1462 | ||
1463 | switch (in) { | |
1464 | case F2FS_GOING_DOWN_FULLSYNC: | |
1465 | sb = freeze_bdev(sb->s_bdev); | |
1466 | if (sb && !IS_ERR(sb)) { | |
1467 | f2fs_stop_checkpoint(sbi); | |
1468 | thaw_bdev(sb->s_bdev, sb); | |
1469 | } | |
1470 | break; | |
1471 | case F2FS_GOING_DOWN_METASYNC: | |
1472 | /* do checkpoint only */ | |
1473 | f2fs_sync_fs(sb, 1); | |
1474 | f2fs_stop_checkpoint(sbi); | |
1475 | break; | |
1476 | case F2FS_GOING_DOWN_NOSYNC: | |
1477 | f2fs_stop_checkpoint(sbi); | |
1478 | break; | |
c912a829 JK |
1479 | case F2FS_GOING_DOWN_METAFLUSH: |
1480 | sync_meta_pages(sbi, META, LONG_MAX); | |
1481 | f2fs_stop_checkpoint(sbi); | |
1482 | break; | |
1abff93d JK |
1483 | default: |
1484 | return -EINVAL; | |
1485 | } | |
d0239e1b | 1486 | f2fs_update_time(sbi, REQ_TIME); |
1abff93d JK |
1487 | return 0; |
1488 | } | |
1489 | ||
52656e6c JK |
1490 | static int f2fs_ioc_fitrim(struct file *filp, unsigned long arg) |
1491 | { | |
1492 | struct inode *inode = file_inode(filp); | |
1493 | struct super_block *sb = inode->i_sb; | |
1494 | struct request_queue *q = bdev_get_queue(sb->s_bdev); | |
1495 | struct fstrim_range range; | |
1496 | int ret; | |
4b2fecc8 | 1497 | |
52656e6c JK |
1498 | if (!capable(CAP_SYS_ADMIN)) |
1499 | return -EPERM; | |
4b2fecc8 | 1500 | |
52656e6c JK |
1501 | if (!blk_queue_discard(q)) |
1502 | return -EOPNOTSUPP; | |
4b2fecc8 | 1503 | |
52656e6c JK |
1504 | if (copy_from_user(&range, (struct fstrim_range __user *)arg, |
1505 | sizeof(range))) | |
1506 | return -EFAULT; | |
4b2fecc8 | 1507 | |
52656e6c JK |
1508 | range.minlen = max((unsigned int)range.minlen, |
1509 | q->limits.discard_granularity); | |
1510 | ret = f2fs_trim_fs(F2FS_SB(sb), &range); | |
1511 | if (ret < 0) | |
1512 | return ret; | |
4b2fecc8 | 1513 | |
52656e6c JK |
1514 | if (copy_to_user((struct fstrim_range __user *)arg, &range, |
1515 | sizeof(range))) | |
1516 | return -EFAULT; | |
d0239e1b | 1517 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); |
52656e6c JK |
1518 | return 0; |
1519 | } | |
1520 | ||
f424f664 JK |
1521 | static bool uuid_is_nonzero(__u8 u[16]) |
1522 | { | |
1523 | int i; | |
1524 | ||
1525 | for (i = 0; i < 16; i++) | |
1526 | if (u[i]) | |
1527 | return true; | |
1528 | return false; | |
1529 | } | |
1530 | ||
1531 | static int f2fs_ioc_set_encryption_policy(struct file *filp, unsigned long arg) | |
1532 | { | |
0b81d077 | 1533 | struct fscrypt_policy policy; |
f424f664 JK |
1534 | struct inode *inode = file_inode(filp); |
1535 | ||
0b81d077 JK |
1536 | if (copy_from_user(&policy, (struct fscrypt_policy __user *)arg, |
1537 | sizeof(policy))) | |
f424f664 JK |
1538 | return -EFAULT; |
1539 | ||
d0239e1b | 1540 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); |
0b81d077 | 1541 | return fscrypt_process_policy(inode, &policy); |
f424f664 JK |
1542 | } |
1543 | ||
1544 | static int f2fs_ioc_get_encryption_policy(struct file *filp, unsigned long arg) | |
1545 | { | |
0b81d077 | 1546 | struct fscrypt_policy policy; |
f424f664 JK |
1547 | struct inode *inode = file_inode(filp); |
1548 | int err; | |
1549 | ||
0b81d077 | 1550 | err = fscrypt_get_policy(inode, &policy); |
f424f664 JK |
1551 | if (err) |
1552 | return err; | |
1553 | ||
0b81d077 | 1554 | if (copy_to_user((struct fscrypt_policy __user *)arg, &policy, sizeof(policy))) |
f424f664 JK |
1555 | return -EFAULT; |
1556 | return 0; | |
f424f664 JK |
1557 | } |
1558 | ||
1559 | static int f2fs_ioc_get_encryption_pwsalt(struct file *filp, unsigned long arg) | |
1560 | { | |
1561 | struct inode *inode = file_inode(filp); | |
1562 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
1563 | int err; | |
1564 | ||
1565 | if (!f2fs_sb_has_crypto(inode->i_sb)) | |
1566 | return -EOPNOTSUPP; | |
1567 | ||
1568 | if (uuid_is_nonzero(sbi->raw_super->encrypt_pw_salt)) | |
1569 | goto got_it; | |
1570 | ||
1571 | err = mnt_want_write_file(filp); | |
1572 | if (err) | |
1573 | return err; | |
1574 | ||
1575 | /* update superblock with uuid */ | |
1576 | generate_random_uuid(sbi->raw_super->encrypt_pw_salt); | |
1577 | ||
c5bda1c8 | 1578 | err = f2fs_commit_super(sbi, false); |
f424f664 JK |
1579 | if (err) { |
1580 | /* undo new data */ | |
1581 | memset(sbi->raw_super->encrypt_pw_salt, 0, 16); | |
e8240f65 | 1582 | mnt_drop_write_file(filp); |
f424f664 JK |
1583 | return err; |
1584 | } | |
e8240f65 | 1585 | mnt_drop_write_file(filp); |
f424f664 JK |
1586 | got_it: |
1587 | if (copy_to_user((__u8 __user *)arg, sbi->raw_super->encrypt_pw_salt, | |
1588 | 16)) | |
1589 | return -EFAULT; | |
1590 | return 0; | |
1591 | } | |
1592 | ||
c1c1b583 CY |
1593 | static int f2fs_ioc_gc(struct file *filp, unsigned long arg) |
1594 | { | |
1595 | struct inode *inode = file_inode(filp); | |
1596 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
d530d4d8 | 1597 | __u32 sync; |
c1c1b583 CY |
1598 | |
1599 | if (!capable(CAP_SYS_ADMIN)) | |
1600 | return -EPERM; | |
1601 | ||
d530d4d8 | 1602 | if (get_user(sync, (__u32 __user *)arg)) |
c1c1b583 CY |
1603 | return -EFAULT; |
1604 | ||
d530d4d8 CY |
1605 | if (f2fs_readonly(sbi->sb)) |
1606 | return -EROFS; | |
c1c1b583 | 1607 | |
d530d4d8 | 1608 | if (!sync) { |
c1c1b583 | 1609 | if (!mutex_trylock(&sbi->gc_mutex)) |
d530d4d8 CY |
1610 | return -EBUSY; |
1611 | } else { | |
1612 | mutex_lock(&sbi->gc_mutex); | |
c1c1b583 CY |
1613 | } |
1614 | ||
d530d4d8 | 1615 | return f2fs_gc(sbi, sync); |
c1c1b583 CY |
1616 | } |
1617 | ||
456b88e4 CY |
1618 | static int f2fs_ioc_write_checkpoint(struct file *filp, unsigned long arg) |
1619 | { | |
1620 | struct inode *inode = file_inode(filp); | |
1621 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
456b88e4 CY |
1622 | |
1623 | if (!capable(CAP_SYS_ADMIN)) | |
1624 | return -EPERM; | |
1625 | ||
1626 | if (f2fs_readonly(sbi->sb)) | |
1627 | return -EROFS; | |
1628 | ||
e96248bb | 1629 | return f2fs_sync_fs(sbi->sb, 1); |
456b88e4 CY |
1630 | } |
1631 | ||
d323d005 CY |
1632 | static int f2fs_defragment_range(struct f2fs_sb_info *sbi, |
1633 | struct file *filp, | |
1634 | struct f2fs_defragment *range) | |
1635 | { | |
1636 | struct inode *inode = file_inode(filp); | |
da85985c | 1637 | struct f2fs_map_blocks map = { .m_next_pgofs = NULL }; |
d323d005 CY |
1638 | struct extent_info ei; |
1639 | pgoff_t pg_start, pg_end; | |
3519e3f9 | 1640 | unsigned int blk_per_seg = sbi->blocks_per_seg; |
d323d005 | 1641 | unsigned int total = 0, sec_num; |
3519e3f9 | 1642 | unsigned int pages_per_sec = sbi->segs_per_sec * blk_per_seg; |
d323d005 CY |
1643 | block_t blk_end = 0; |
1644 | bool fragmented = false; | |
1645 | int err; | |
1646 | ||
1647 | /* if in-place-update policy is enabled, don't waste time here */ | |
1648 | if (need_inplace_update(inode)) | |
1649 | return -EINVAL; | |
1650 | ||
1651 | pg_start = range->start >> PAGE_CACHE_SHIFT; | |
1652 | pg_end = (range->start + range->len) >> PAGE_CACHE_SHIFT; | |
1653 | ||
2c4db1a6 | 1654 | f2fs_balance_fs(sbi, true); |
d323d005 | 1655 | |
5955102c | 1656 | inode_lock(inode); |
d323d005 CY |
1657 | |
1658 | /* writeback all dirty pages in the range */ | |
1659 | err = filemap_write_and_wait_range(inode->i_mapping, range->start, | |
d8fe4f0e | 1660 | range->start + range->len - 1); |
d323d005 CY |
1661 | if (err) |
1662 | goto out; | |
1663 | ||
1664 | /* | |
1665 | * lookup mapping info in extent cache, skip defragmenting if physical | |
1666 | * block addresses are continuous. | |
1667 | */ | |
1668 | if (f2fs_lookup_extent_cache(inode, pg_start, &ei)) { | |
1669 | if (ei.fofs + ei.len >= pg_end) | |
1670 | goto out; | |
1671 | } | |
1672 | ||
1673 | map.m_lblk = pg_start; | |
d323d005 CY |
1674 | |
1675 | /* | |
1676 | * lookup mapping info in dnode page cache, skip defragmenting if all | |
1677 | * physical block addresses are continuous even if there are hole(s) | |
1678 | * in logical blocks. | |
1679 | */ | |
1680 | while (map.m_lblk < pg_end) { | |
a1c1e9b7 | 1681 | map.m_len = pg_end - map.m_lblk; |
d323d005 CY |
1682 | err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_READ); |
1683 | if (err) | |
1684 | goto out; | |
1685 | ||
1686 | if (!(map.m_flags & F2FS_MAP_FLAGS)) { | |
1687 | map.m_lblk++; | |
d323d005 CY |
1688 | continue; |
1689 | } | |
1690 | ||
1691 | if (blk_end && blk_end != map.m_pblk) { | |
1692 | fragmented = true; | |
1693 | break; | |
1694 | } | |
1695 | blk_end = map.m_pblk + map.m_len; | |
1696 | ||
1697 | map.m_lblk += map.m_len; | |
d323d005 CY |
1698 | } |
1699 | ||
1700 | if (!fragmented) | |
1701 | goto out; | |
1702 | ||
1703 | map.m_lblk = pg_start; | |
1704 | map.m_len = pg_end - pg_start; | |
1705 | ||
1706 | sec_num = (map.m_len + pages_per_sec - 1) / pages_per_sec; | |
1707 | ||
1708 | /* | |
1709 | * make sure there are enough free section for LFS allocation, this can | |
1710 | * avoid defragment running in SSR mode when free section are allocated | |
1711 | * intensively | |
1712 | */ | |
1713 | if (has_not_enough_free_secs(sbi, sec_num)) { | |
1714 | err = -EAGAIN; | |
1715 | goto out; | |
1716 | } | |
1717 | ||
1718 | while (map.m_lblk < pg_end) { | |
1719 | pgoff_t idx; | |
1720 | int cnt = 0; | |
1721 | ||
1722 | do_map: | |
a1c1e9b7 | 1723 | map.m_len = pg_end - map.m_lblk; |
d323d005 CY |
1724 | err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_READ); |
1725 | if (err) | |
1726 | goto clear_out; | |
1727 | ||
1728 | if (!(map.m_flags & F2FS_MAP_FLAGS)) { | |
1729 | map.m_lblk++; | |
1730 | continue; | |
1731 | } | |
1732 | ||
1733 | set_inode_flag(F2FS_I(inode), FI_DO_DEFRAG); | |
1734 | ||
1735 | idx = map.m_lblk; | |
1736 | while (idx < map.m_lblk + map.m_len && cnt < blk_per_seg) { | |
1737 | struct page *page; | |
1738 | ||
1739 | page = get_lock_data_page(inode, idx, true); | |
1740 | if (IS_ERR(page)) { | |
1741 | err = PTR_ERR(page); | |
1742 | goto clear_out; | |
1743 | } | |
1744 | ||
1745 | set_page_dirty(page); | |
1746 | f2fs_put_page(page, 1); | |
1747 | ||
1748 | idx++; | |
1749 | cnt++; | |
1750 | total++; | |
1751 | } | |
1752 | ||
1753 | map.m_lblk = idx; | |
d323d005 CY |
1754 | |
1755 | if (idx < pg_end && cnt < blk_per_seg) | |
1756 | goto do_map; | |
1757 | ||
1758 | clear_inode_flag(F2FS_I(inode), FI_DO_DEFRAG); | |
1759 | ||
1760 | err = filemap_fdatawrite(inode->i_mapping); | |
1761 | if (err) | |
1762 | goto out; | |
1763 | } | |
1764 | clear_out: | |
1765 | clear_inode_flag(F2FS_I(inode), FI_DO_DEFRAG); | |
1766 | out: | |
5955102c | 1767 | inode_unlock(inode); |
d323d005 CY |
1768 | if (!err) |
1769 | range->len = (u64)total << PAGE_CACHE_SHIFT; | |
1770 | return err; | |
1771 | } | |
1772 | ||
1773 | static int f2fs_ioc_defragment(struct file *filp, unsigned long arg) | |
1774 | { | |
1775 | struct inode *inode = file_inode(filp); | |
1776 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
1777 | struct f2fs_defragment range; | |
1778 | int err; | |
1779 | ||
1780 | if (!capable(CAP_SYS_ADMIN)) | |
1781 | return -EPERM; | |
1782 | ||
1783 | if (!S_ISREG(inode->i_mode)) | |
1784 | return -EINVAL; | |
1785 | ||
1786 | err = mnt_want_write_file(filp); | |
1787 | if (err) | |
1788 | return err; | |
1789 | ||
1790 | if (f2fs_readonly(sbi->sb)) { | |
1791 | err = -EROFS; | |
1792 | goto out; | |
1793 | } | |
1794 | ||
1795 | if (copy_from_user(&range, (struct f2fs_defragment __user *)arg, | |
1796 | sizeof(range))) { | |
1797 | err = -EFAULT; | |
1798 | goto out; | |
1799 | } | |
1800 | ||
1801 | /* verify alignment of offset & size */ | |
1802 | if (range.start & (F2FS_BLKSIZE - 1) || | |
1803 | range.len & (F2FS_BLKSIZE - 1)) { | |
1804 | err = -EINVAL; | |
1805 | goto out; | |
1806 | } | |
1807 | ||
1808 | err = f2fs_defragment_range(sbi, filp, &range); | |
d0239e1b | 1809 | f2fs_update_time(sbi, REQ_TIME); |
d323d005 CY |
1810 | if (err < 0) |
1811 | goto out; | |
1812 | ||
1813 | if (copy_to_user((struct f2fs_defragment __user *)arg, &range, | |
1814 | sizeof(range))) | |
1815 | err = -EFAULT; | |
1816 | out: | |
1817 | mnt_drop_write_file(filp); | |
1818 | return err; | |
1819 | } | |
1820 | ||
52656e6c JK |
1821 | long f2fs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) |
1822 | { | |
1823 | switch (cmd) { | |
1824 | case F2FS_IOC_GETFLAGS: | |
1825 | return f2fs_ioc_getflags(filp, arg); | |
1826 | case F2FS_IOC_SETFLAGS: | |
1827 | return f2fs_ioc_setflags(filp, arg); | |
d49f3e89 CY |
1828 | case F2FS_IOC_GETVERSION: |
1829 | return f2fs_ioc_getversion(filp, arg); | |
88b88a66 JK |
1830 | case F2FS_IOC_START_ATOMIC_WRITE: |
1831 | return f2fs_ioc_start_atomic_write(filp); | |
1832 | case F2FS_IOC_COMMIT_ATOMIC_WRITE: | |
1833 | return f2fs_ioc_commit_atomic_write(filp); | |
02a1335f JK |
1834 | case F2FS_IOC_START_VOLATILE_WRITE: |
1835 | return f2fs_ioc_start_volatile_write(filp); | |
1e84371f JK |
1836 | case F2FS_IOC_RELEASE_VOLATILE_WRITE: |
1837 | return f2fs_ioc_release_volatile_write(filp); | |
1838 | case F2FS_IOC_ABORT_VOLATILE_WRITE: | |
1839 | return f2fs_ioc_abort_volatile_write(filp); | |
1abff93d JK |
1840 | case F2FS_IOC_SHUTDOWN: |
1841 | return f2fs_ioc_shutdown(filp, arg); | |
52656e6c JK |
1842 | case FITRIM: |
1843 | return f2fs_ioc_fitrim(filp, arg); | |
f424f664 JK |
1844 | case F2FS_IOC_SET_ENCRYPTION_POLICY: |
1845 | return f2fs_ioc_set_encryption_policy(filp, arg); | |
1846 | case F2FS_IOC_GET_ENCRYPTION_POLICY: | |
1847 | return f2fs_ioc_get_encryption_policy(filp, arg); | |
1848 | case F2FS_IOC_GET_ENCRYPTION_PWSALT: | |
1849 | return f2fs_ioc_get_encryption_pwsalt(filp, arg); | |
c1c1b583 CY |
1850 | case F2FS_IOC_GARBAGE_COLLECT: |
1851 | return f2fs_ioc_gc(filp, arg); | |
456b88e4 CY |
1852 | case F2FS_IOC_WRITE_CHECKPOINT: |
1853 | return f2fs_ioc_write_checkpoint(filp, arg); | |
d323d005 CY |
1854 | case F2FS_IOC_DEFRAGMENT: |
1855 | return f2fs_ioc_defragment(filp, arg); | |
fbfa2cc5 JK |
1856 | default: |
1857 | return -ENOTTY; | |
1858 | } | |
1859 | } | |
1860 | ||
fcc85a4d JK |
1861 | static ssize_t f2fs_file_write_iter(struct kiocb *iocb, struct iov_iter *from) |
1862 | { | |
b439b103 JK |
1863 | struct file *file = iocb->ki_filp; |
1864 | struct inode *inode = file_inode(file); | |
1865 | ssize_t ret; | |
fcc85a4d JK |
1866 | |
1867 | if (f2fs_encrypted_inode(inode) && | |
0b81d077 JK |
1868 | !fscrypt_has_encryption_key(inode) && |
1869 | fscrypt_get_encryption_info(inode)) | |
fcc85a4d JK |
1870 | return -EACCES; |
1871 | ||
b439b103 JK |
1872 | inode_lock(inode); |
1873 | ret = generic_write_checks(iocb, from); | |
1874 | if (ret > 0) { | |
1875 | ret = f2fs_preallocate_blocks(iocb, from); | |
1876 | if (!ret) | |
1877 | ret = __generic_file_write_iter(iocb, from); | |
1878 | } | |
1879 | inode_unlock(inode); | |
1880 | ||
1881 | if (ret > 0) { | |
1882 | ssize_t err; | |
1883 | ||
1884 | err = generic_write_sync(file, iocb->ki_pos - ret, ret); | |
1885 | if (err < 0) | |
1886 | ret = err; | |
1887 | } | |
1888 | return ret; | |
fcc85a4d JK |
1889 | } |
1890 | ||
e9750824 NJ |
1891 | #ifdef CONFIG_COMPAT |
1892 | long f2fs_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg) | |
1893 | { | |
1894 | switch (cmd) { | |
1895 | case F2FS_IOC32_GETFLAGS: | |
1896 | cmd = F2FS_IOC_GETFLAGS; | |
1897 | break; | |
1898 | case F2FS_IOC32_SETFLAGS: | |
1899 | cmd = F2FS_IOC_SETFLAGS; | |
1900 | break; | |
04ef4b62 CY |
1901 | case F2FS_IOC32_GETVERSION: |
1902 | cmd = F2FS_IOC_GETVERSION; | |
1903 | break; | |
1904 | case F2FS_IOC_START_ATOMIC_WRITE: | |
1905 | case F2FS_IOC_COMMIT_ATOMIC_WRITE: | |
1906 | case F2FS_IOC_START_VOLATILE_WRITE: | |
1907 | case F2FS_IOC_RELEASE_VOLATILE_WRITE: | |
1908 | case F2FS_IOC_ABORT_VOLATILE_WRITE: | |
1909 | case F2FS_IOC_SHUTDOWN: | |
1910 | case F2FS_IOC_SET_ENCRYPTION_POLICY: | |
1911 | case F2FS_IOC_GET_ENCRYPTION_PWSALT: | |
1912 | case F2FS_IOC_GET_ENCRYPTION_POLICY: | |
1913 | case F2FS_IOC_GARBAGE_COLLECT: | |
1914 | case F2FS_IOC_WRITE_CHECKPOINT: | |
1915 | case F2FS_IOC_DEFRAGMENT: | |
1916 | break; | |
e9750824 NJ |
1917 | default: |
1918 | return -ENOIOCTLCMD; | |
1919 | } | |
1920 | return f2fs_ioctl(file, cmd, (unsigned long) compat_ptr(arg)); | |
1921 | } | |
1922 | #endif | |
1923 | ||
fbfa2cc5 | 1924 | const struct file_operations f2fs_file_operations = { |
267378d4 | 1925 | .llseek = f2fs_llseek, |
aad4f8bb | 1926 | .read_iter = generic_file_read_iter, |
fcc85a4d JK |
1927 | .write_iter = f2fs_file_write_iter, |
1928 | .open = f2fs_file_open, | |
12662234 | 1929 | .release = f2fs_release_file, |
fbfa2cc5 JK |
1930 | .mmap = f2fs_file_mmap, |
1931 | .fsync = f2fs_sync_file, | |
1932 | .fallocate = f2fs_fallocate, | |
1933 | .unlocked_ioctl = f2fs_ioctl, | |
e9750824 NJ |
1934 | #ifdef CONFIG_COMPAT |
1935 | .compat_ioctl = f2fs_compat_ioctl, | |
1936 | #endif | |
fbfa2cc5 | 1937 | .splice_read = generic_file_splice_read, |
8d020765 | 1938 | .splice_write = iter_file_splice_write, |
fbfa2cc5 | 1939 | }; |