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 | |
2a340760 JK |
58 | if (dn.node_changed) |
59 | f2fs_balance_fs(sbi); | |
60 | ||
9851e6e1 | 61 | file_update_time(vma->vm_file); |
fbfa2cc5 | 62 | lock_page(page); |
6bacf52f | 63 | if (unlikely(page->mapping != inode->i_mapping || |
9851e6e1 | 64 | page_offset(page) > i_size_read(inode) || |
6bacf52f | 65 | !PageUptodate(page))) { |
fbfa2cc5 JK |
66 | unlock_page(page); |
67 | err = -EFAULT; | |
68 | goto out; | |
69 | } | |
70 | ||
71 | /* | |
72 | * check to see if the page is mapped already (no holes) | |
73 | */ | |
74 | if (PageMappedToDisk(page)) | |
9851e6e1 | 75 | goto mapped; |
fbfa2cc5 JK |
76 | |
77 | /* page is wholly or partially inside EOF */ | |
9edcdabf CY |
78 | if (((loff_t)(page->index + 1) << PAGE_CACHE_SHIFT) > |
79 | i_size_read(inode)) { | |
fbfa2cc5 JK |
80 | unsigned offset; |
81 | offset = i_size_read(inode) & ~PAGE_CACHE_MASK; | |
82 | zero_user_segment(page, offset, PAGE_CACHE_SIZE); | |
83 | } | |
84 | set_page_dirty(page); | |
85 | SetPageUptodate(page); | |
86 | ||
e943a10d | 87 | trace_f2fs_vm_page_mkwrite(page, DATA); |
9851e6e1 NJ |
88 | mapped: |
89 | /* fill the page */ | |
3cb5ad15 | 90 | f2fs_wait_on_page_writeback(page, DATA); |
08b39fbd CY |
91 | |
92 | /* wait for GCed encrypted page writeback */ | |
93 | if (f2fs_encrypted_inode(inode) && S_ISREG(inode->i_mode)) | |
94 | f2fs_wait_on_encrypted_page_writeback(sbi, dn.data_blkaddr); | |
95 | ||
5b339124 CY |
96 | /* if gced page is attached, don't write to cold segment */ |
97 | clear_cold_data(page); | |
fbfa2cc5 JK |
98 | out: |
99 | sb_end_pagefault(inode->i_sb); | |
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 */ | |
c1ce1b02 | 205 | if (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); | |
2a340760 JK |
270 | |
271 | f2fs_balance_fs(sbi); | |
51455b19 | 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); |
51455b19 CL |
281 | clear_inode_flag(fi, FI_APPEND_WRITE); |
282 | flush_out: | |
a49324f1 | 283 | remove_ino_entry(sbi, ino, UPDATE_INO); |
51455b19 CL |
284 | clear_inode_flag(fi, FI_UPDATE_WRITE); |
285 | ret = f2fs_issue_flush(sbi); | |
fbfa2cc5 | 286 | out: |
a2a4a7e4 | 287 | trace_f2fs_sync_file_exit(inode, need_cp, datasync, ret); |
05ca3632 | 288 | f2fs_trace_ios(NULL, 1); |
fbfa2cc5 JK |
289 | return ret; |
290 | } | |
291 | ||
7f7670fe JK |
292 | static pgoff_t __get_first_dirty_index(struct address_space *mapping, |
293 | pgoff_t pgofs, int whence) | |
294 | { | |
295 | struct pagevec pvec; | |
296 | int nr_pages; | |
297 | ||
298 | if (whence != SEEK_DATA) | |
299 | return 0; | |
300 | ||
301 | /* find first dirty page index */ | |
302 | pagevec_init(&pvec, 0); | |
65b85ccc JK |
303 | nr_pages = pagevec_lookup_tag(&pvec, mapping, &pgofs, |
304 | PAGECACHE_TAG_DIRTY, 1); | |
305 | pgofs = nr_pages ? pvec.pages[0]->index : LONG_MAX; | |
7f7670fe JK |
306 | pagevec_release(&pvec); |
307 | return pgofs; | |
308 | } | |
309 | ||
310 | static bool __found_offset(block_t blkaddr, pgoff_t dirty, pgoff_t pgofs, | |
311 | int whence) | |
312 | { | |
313 | switch (whence) { | |
314 | case SEEK_DATA: | |
315 | if ((blkaddr == NEW_ADDR && dirty == pgofs) || | |
316 | (blkaddr != NEW_ADDR && blkaddr != NULL_ADDR)) | |
317 | return true; | |
318 | break; | |
319 | case SEEK_HOLE: | |
320 | if (blkaddr == NULL_ADDR) | |
321 | return true; | |
322 | break; | |
323 | } | |
324 | return false; | |
325 | } | |
326 | ||
267378d4 CY |
327 | static loff_t f2fs_seek_block(struct file *file, loff_t offset, int whence) |
328 | { | |
329 | struct inode *inode = file->f_mapping->host; | |
330 | loff_t maxbytes = inode->i_sb->s_maxbytes; | |
331 | struct dnode_of_data dn; | |
7f7670fe JK |
332 | pgoff_t pgofs, end_offset, dirty; |
333 | loff_t data_ofs = offset; | |
334 | loff_t isize; | |
267378d4 CY |
335 | int err = 0; |
336 | ||
337 | mutex_lock(&inode->i_mutex); | |
338 | ||
339 | isize = i_size_read(inode); | |
340 | if (offset >= isize) | |
341 | goto fail; | |
342 | ||
343 | /* handle inline data case */ | |
622f28ae | 344 | if (f2fs_has_inline_data(inode) || f2fs_has_inline_dentry(inode)) { |
267378d4 CY |
345 | if (whence == SEEK_HOLE) |
346 | data_ofs = isize; | |
347 | goto found; | |
348 | } | |
349 | ||
350 | pgofs = (pgoff_t)(offset >> PAGE_CACHE_SHIFT); | |
351 | ||
7f7670fe JK |
352 | dirty = __get_first_dirty_index(inode->i_mapping, pgofs, whence); |
353 | ||
9edcdabf | 354 | for (; data_ofs < isize; data_ofs = (loff_t)pgofs << PAGE_CACHE_SHIFT) { |
267378d4 CY |
355 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
356 | err = get_dnode_of_data(&dn, pgofs, LOOKUP_NODE_RA); | |
357 | if (err && err != -ENOENT) { | |
358 | goto fail; | |
359 | } else if (err == -ENOENT) { | |
e1c42045 | 360 | /* direct node does not exists */ |
267378d4 CY |
361 | if (whence == SEEK_DATA) { |
362 | pgofs = PGOFS_OF_NEXT_DNODE(pgofs, | |
363 | F2FS_I(inode)); | |
364 | continue; | |
365 | } else { | |
366 | goto found; | |
367 | } | |
368 | } | |
369 | ||
6b2920a5 | 370 | end_offset = ADDRS_PER_PAGE(dn.node_page, F2FS_I(inode)); |
267378d4 CY |
371 | |
372 | /* find data/hole in dnode block */ | |
373 | for (; dn.ofs_in_node < end_offset; | |
374 | dn.ofs_in_node++, pgofs++, | |
2e023174 | 375 | data_ofs = (loff_t)pgofs << PAGE_CACHE_SHIFT) { |
267378d4 CY |
376 | block_t blkaddr; |
377 | blkaddr = datablock_addr(dn.node_page, dn.ofs_in_node); | |
378 | ||
7f7670fe | 379 | if (__found_offset(blkaddr, dirty, pgofs, whence)) { |
267378d4 CY |
380 | f2fs_put_dnode(&dn); |
381 | goto found; | |
382 | } | |
383 | } | |
384 | f2fs_put_dnode(&dn); | |
385 | } | |
386 | ||
387 | if (whence == SEEK_DATA) | |
388 | goto fail; | |
267378d4 | 389 | found: |
fe369bc8 JK |
390 | if (whence == SEEK_HOLE && data_ofs > isize) |
391 | data_ofs = isize; | |
267378d4 CY |
392 | mutex_unlock(&inode->i_mutex); |
393 | return vfs_setpos(file, data_ofs, maxbytes); | |
394 | fail: | |
395 | mutex_unlock(&inode->i_mutex); | |
396 | return -ENXIO; | |
397 | } | |
398 | ||
399 | static loff_t f2fs_llseek(struct file *file, loff_t offset, int whence) | |
400 | { | |
401 | struct inode *inode = file->f_mapping->host; | |
402 | loff_t maxbytes = inode->i_sb->s_maxbytes; | |
403 | ||
404 | switch (whence) { | |
405 | case SEEK_SET: | |
406 | case SEEK_CUR: | |
407 | case SEEK_END: | |
408 | return generic_file_llseek_size(file, offset, whence, | |
409 | maxbytes, i_size_read(inode)); | |
410 | case SEEK_DATA: | |
411 | case SEEK_HOLE: | |
0b4c5afd JK |
412 | if (offset < 0) |
413 | return -ENXIO; | |
267378d4 CY |
414 | return f2fs_seek_block(file, offset, whence); |
415 | } | |
416 | ||
417 | return -EINVAL; | |
418 | } | |
419 | ||
fbfa2cc5 JK |
420 | static int f2fs_file_mmap(struct file *file, struct vm_area_struct *vma) |
421 | { | |
b3d208f9 | 422 | struct inode *inode = file_inode(file); |
b9d777b8 | 423 | int err; |
b3d208f9 | 424 | |
fcc85a4d | 425 | if (f2fs_encrypted_inode(inode)) { |
b9d777b8 | 426 | err = f2fs_get_encryption_info(inode); |
fcc85a4d JK |
427 | if (err) |
428 | return 0; | |
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)) { | |
446 | ret = f2fs_get_encryption_info(inode); | |
447 | if (ret) | |
448 | ret = -EACCES; | |
449 | } | |
450 | return ret; | |
451 | } | |
452 | ||
b292dcab | 453 | int truncate_data_blocks_range(struct dnode_of_data *dn, int count) |
fbfa2cc5 | 454 | { |
4081363f | 455 | struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); |
fbfa2cc5 | 456 | struct f2fs_node *raw_node; |
19b2c30d | 457 | int nr_free = 0, ofs = dn->ofs_in_node, len = count; |
fbfa2cc5 JK |
458 | __le32 *addr; |
459 | ||
45590710 | 460 | raw_node = F2FS_NODE(dn->node_page); |
fbfa2cc5 JK |
461 | addr = blkaddr_in_node(raw_node) + ofs; |
462 | ||
6c311ec6 | 463 | for (; count > 0; count--, addr++, dn->ofs_in_node++) { |
fbfa2cc5 JK |
464 | block_t blkaddr = le32_to_cpu(*addr); |
465 | if (blkaddr == NULL_ADDR) | |
466 | continue; | |
467 | ||
e1509cf2 | 468 | dn->data_blkaddr = NULL_ADDR; |
216a620a | 469 | set_data_blkaddr(dn); |
fbfa2cc5 | 470 | invalidate_blocks(sbi, blkaddr); |
3c6c2beb JK |
471 | if (dn->ofs_in_node == 0 && IS_INODE(dn->node_page)) |
472 | clear_inode_flag(F2FS_I(dn->inode), | |
473 | FI_FIRST_BLOCK_WRITTEN); | |
fbfa2cc5 JK |
474 | nr_free++; |
475 | } | |
19b2c30d | 476 | |
fbfa2cc5 | 477 | if (nr_free) { |
19b2c30d CY |
478 | pgoff_t fofs; |
479 | /* | |
480 | * once we invalidate valid blkaddr in range [ofs, ofs + count], | |
481 | * we will invalidate all blkaddr in the whole range. | |
482 | */ | |
483 | fofs = start_bidx_of_node(ofs_of_node(dn->node_page), | |
484 | F2FS_I(dn->inode)) + ofs; | |
485 | f2fs_update_extent_cache_range(dn, fofs, 0, len); | |
d7cc950b | 486 | dec_valid_block_count(sbi, dn->inode, nr_free); |
fbfa2cc5 JK |
487 | set_page_dirty(dn->node_page); |
488 | sync_inode_page(dn); | |
489 | } | |
490 | dn->ofs_in_node = ofs; | |
51dd6249 NJ |
491 | |
492 | trace_f2fs_truncate_data_blocks_range(dn->inode, dn->nid, | |
493 | dn->ofs_in_node, nr_free); | |
fbfa2cc5 JK |
494 | return nr_free; |
495 | } | |
496 | ||
497 | void truncate_data_blocks(struct dnode_of_data *dn) | |
498 | { | |
499 | truncate_data_blocks_range(dn, ADDRS_PER_BLOCK); | |
500 | } | |
501 | ||
0bfcfcca | 502 | static int truncate_partial_data_page(struct inode *inode, u64 from, |
43f3eae1 | 503 | bool cache_only) |
fbfa2cc5 JK |
504 | { |
505 | unsigned offset = from & (PAGE_CACHE_SIZE - 1); | |
43f3eae1 JK |
506 | pgoff_t index = from >> PAGE_CACHE_SHIFT; |
507 | struct address_space *mapping = inode->i_mapping; | |
fbfa2cc5 JK |
508 | struct page *page; |
509 | ||
43f3eae1 | 510 | if (!offset && !cache_only) |
b3d208f9 | 511 | return 0; |
fbfa2cc5 | 512 | |
43f3eae1 | 513 | if (cache_only) { |
a56c7c6f | 514 | page = f2fs_grab_cache_page(mapping, index, false); |
43f3eae1 JK |
515 | if (page && PageUptodate(page)) |
516 | goto truncate_out; | |
517 | f2fs_put_page(page, 1); | |
b3d208f9 | 518 | return 0; |
43f3eae1 | 519 | } |
fbfa2cc5 | 520 | |
a56c7c6f | 521 | page = get_lock_data_page(inode, index, true); |
43f3eae1 JK |
522 | if (IS_ERR(page)) |
523 | return 0; | |
524 | truncate_out: | |
3cb5ad15 | 525 | f2fs_wait_on_page_writeback(page, DATA); |
fbfa2cc5 | 526 | zero_user(page, offset, PAGE_CACHE_SIZE - offset); |
4375a336 | 527 | if (!cache_only || !f2fs_encrypted_inode(inode) || !S_ISREG(inode->i_mode)) |
0bfcfcca | 528 | set_page_dirty(page); |
fbfa2cc5 | 529 | f2fs_put_page(page, 1); |
b3d208f9 | 530 | return 0; |
fbfa2cc5 JK |
531 | } |
532 | ||
764aa3e9 | 533 | int truncate_blocks(struct inode *inode, u64 from, bool lock) |
fbfa2cc5 | 534 | { |
4081363f | 535 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
fbfa2cc5 JK |
536 | unsigned int blocksize = inode->i_sb->s_blocksize; |
537 | struct dnode_of_data dn; | |
538 | pgoff_t free_from; | |
9ffe0fb5 | 539 | int count = 0, err = 0; |
b3d208f9 | 540 | struct page *ipage; |
0bfcfcca | 541 | bool truncate_page = false; |
fbfa2cc5 | 542 | |
51dd6249 NJ |
543 | trace_f2fs_truncate_blocks_enter(inode, from); |
544 | ||
f7ef9b83 | 545 | free_from = (pgoff_t)F2FS_BYTES_TO_BLK(from + blocksize - 1); |
fbfa2cc5 | 546 | |
764aa3e9 JK |
547 | if (lock) |
548 | f2fs_lock_op(sbi); | |
9ffe0fb5 | 549 | |
b3d208f9 JK |
550 | ipage = get_node_page(sbi, inode->i_ino); |
551 | if (IS_ERR(ipage)) { | |
552 | err = PTR_ERR(ipage); | |
553 | goto out; | |
554 | } | |
555 | ||
556 | if (f2fs_has_inline_data(inode)) { | |
0bfcfcca CY |
557 | if (truncate_inline_inode(ipage, from)) |
558 | set_page_dirty(ipage); | |
b3d208f9 | 559 | f2fs_put_page(ipage, 1); |
0bfcfcca | 560 | truncate_page = true; |
b3d208f9 JK |
561 | goto out; |
562 | } | |
563 | ||
564 | set_new_dnode(&dn, inode, ipage, NULL, 0); | |
266e97a8 | 565 | err = get_dnode_of_data(&dn, free_from, LOOKUP_NODE); |
fbfa2cc5 JK |
566 | if (err) { |
567 | if (err == -ENOENT) | |
568 | goto free_next; | |
b3d208f9 | 569 | goto out; |
1ce86bf6 JK |
570 | } |
571 | ||
6403eb1f | 572 | count = ADDRS_PER_PAGE(dn.node_page, F2FS_I(inode)); |
fbfa2cc5 JK |
573 | |
574 | count -= dn.ofs_in_node; | |
9850cf4a | 575 | f2fs_bug_on(sbi, count < 0); |
39936837 | 576 | |
fbfa2cc5 JK |
577 | if (dn.ofs_in_node || IS_INODE(dn.node_page)) { |
578 | truncate_data_blocks_range(&dn, count); | |
579 | free_from += count; | |
580 | } | |
581 | ||
582 | f2fs_put_dnode(&dn); | |
583 | free_next: | |
584 | err = truncate_inode_blocks(inode, free_from); | |
764d2c80 JK |
585 | out: |
586 | if (lock) | |
587 | f2fs_unlock_op(sbi); | |
b3d208f9 JK |
588 | |
589 | /* lastly zero out the first data page */ | |
590 | if (!err) | |
0bfcfcca | 591 | err = truncate_partial_data_page(inode, from, truncate_page); |
fbfa2cc5 | 592 | |
51dd6249 | 593 | trace_f2fs_truncate_blocks_exit(inode, err); |
fbfa2cc5 JK |
594 | return err; |
595 | } | |
596 | ||
b0154891 | 597 | int f2fs_truncate(struct inode *inode, bool lock) |
fbfa2cc5 | 598 | { |
b0154891 CY |
599 | int err; |
600 | ||
fbfa2cc5 JK |
601 | if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) || |
602 | S_ISLNK(inode->i_mode))) | |
b0154891 | 603 | return 0; |
fbfa2cc5 | 604 | |
51dd6249 NJ |
605 | trace_f2fs_truncate(inode); |
606 | ||
92dffd01 | 607 | /* we should check inline_data size */ |
b9d777b8 | 608 | if (!f2fs_may_inline_data(inode)) { |
b0154891 CY |
609 | err = f2fs_convert_inline_inode(inode); |
610 | if (err) | |
611 | return err; | |
92dffd01 JK |
612 | } |
613 | ||
b0154891 CY |
614 | err = truncate_blocks(inode, i_size_read(inode), lock); |
615 | if (err) | |
616 | return err; | |
617 | ||
618 | inode->i_mtime = inode->i_ctime = CURRENT_TIME; | |
619 | mark_inode_dirty(inode); | |
620 | return 0; | |
fbfa2cc5 JK |
621 | } |
622 | ||
2d4d9fb5 | 623 | int f2fs_getattr(struct vfsmount *mnt, |
fbfa2cc5 JK |
624 | struct dentry *dentry, struct kstat *stat) |
625 | { | |
2b0143b5 | 626 | struct inode *inode = d_inode(dentry); |
fbfa2cc5 JK |
627 | generic_fillattr(inode, stat); |
628 | stat->blocks <<= 3; | |
629 | return 0; | |
630 | } | |
631 | ||
632 | #ifdef CONFIG_F2FS_FS_POSIX_ACL | |
633 | static void __setattr_copy(struct inode *inode, const struct iattr *attr) | |
634 | { | |
635 | struct f2fs_inode_info *fi = F2FS_I(inode); | |
636 | unsigned int ia_valid = attr->ia_valid; | |
637 | ||
638 | if (ia_valid & ATTR_UID) | |
639 | inode->i_uid = attr->ia_uid; | |
640 | if (ia_valid & ATTR_GID) | |
641 | inode->i_gid = attr->ia_gid; | |
642 | if (ia_valid & ATTR_ATIME) | |
643 | inode->i_atime = timespec_trunc(attr->ia_atime, | |
644 | inode->i_sb->s_time_gran); | |
645 | if (ia_valid & ATTR_MTIME) | |
646 | inode->i_mtime = timespec_trunc(attr->ia_mtime, | |
647 | inode->i_sb->s_time_gran); | |
648 | if (ia_valid & ATTR_CTIME) | |
649 | inode->i_ctime = timespec_trunc(attr->ia_ctime, | |
650 | inode->i_sb->s_time_gran); | |
651 | if (ia_valid & ATTR_MODE) { | |
652 | umode_t mode = attr->ia_mode; | |
653 | ||
654 | if (!in_group_p(inode->i_gid) && !capable(CAP_FSETID)) | |
655 | mode &= ~S_ISGID; | |
656 | set_acl_inode(fi, mode); | |
657 | } | |
658 | } | |
659 | #else | |
660 | #define __setattr_copy setattr_copy | |
661 | #endif | |
662 | ||
663 | int f2fs_setattr(struct dentry *dentry, struct iattr *attr) | |
664 | { | |
2b0143b5 | 665 | struct inode *inode = d_inode(dentry); |
fbfa2cc5 JK |
666 | struct f2fs_inode_info *fi = F2FS_I(inode); |
667 | int err; | |
668 | ||
669 | err = inode_change_ok(inode, attr); | |
670 | if (err) | |
671 | return err; | |
672 | ||
09db6a2e | 673 | if (attr->ia_valid & ATTR_SIZE) { |
fcc85a4d JK |
674 | if (f2fs_encrypted_inode(inode) && |
675 | f2fs_get_encryption_info(inode)) | |
676 | return -EACCES; | |
677 | ||
3c454145 | 678 | if (attr->ia_size <= i_size_read(inode)) { |
09db6a2e | 679 | truncate_setsize(inode, attr->ia_size); |
b0154891 CY |
680 | err = f2fs_truncate(inode, true); |
681 | if (err) | |
682 | return err; | |
09db6a2e CY |
683 | f2fs_balance_fs(F2FS_I_SB(inode)); |
684 | } else { | |
685 | /* | |
3c454145 CY |
686 | * do not trim all blocks after i_size if target size is |
687 | * larger than i_size. | |
09db6a2e | 688 | */ |
3c454145 | 689 | truncate_setsize(inode, attr->ia_size); |
0cab80ee CY |
690 | |
691 | /* should convert inline inode here */ | |
b9d777b8 | 692 | if (!f2fs_may_inline_data(inode)) { |
0cab80ee CY |
693 | err = f2fs_convert_inline_inode(inode); |
694 | if (err) | |
695 | return err; | |
696 | } | |
345a6b2e | 697 | inode->i_mtime = inode->i_ctime = CURRENT_TIME; |
09db6a2e | 698 | } |
fbfa2cc5 JK |
699 | } |
700 | ||
701 | __setattr_copy(inode, attr); | |
702 | ||
703 | if (attr->ia_valid & ATTR_MODE) { | |
a6dda0e6 | 704 | err = posix_acl_chmod(inode, get_inode_mode(inode)); |
fbfa2cc5 JK |
705 | if (err || is_inode_flag_set(fi, FI_ACL_MODE)) { |
706 | inode->i_mode = fi->i_acl_mode; | |
707 | clear_inode_flag(fi, FI_ACL_MODE); | |
708 | } | |
709 | } | |
710 | ||
711 | mark_inode_dirty(inode); | |
712 | return err; | |
713 | } | |
714 | ||
715 | const struct inode_operations f2fs_file_inode_operations = { | |
716 | .getattr = f2fs_getattr, | |
717 | .setattr = f2fs_setattr, | |
718 | .get_acl = f2fs_get_acl, | |
a6dda0e6 | 719 | .set_acl = f2fs_set_acl, |
fbfa2cc5 JK |
720 | #ifdef CONFIG_F2FS_FS_XATTR |
721 | .setxattr = generic_setxattr, | |
722 | .getxattr = generic_getxattr, | |
723 | .listxattr = f2fs_listxattr, | |
724 | .removexattr = generic_removexattr, | |
725 | #endif | |
9ab70134 | 726 | .fiemap = f2fs_fiemap, |
fbfa2cc5 JK |
727 | }; |
728 | ||
6394328a | 729 | static int fill_zero(struct inode *inode, pgoff_t index, |
fbfa2cc5 JK |
730 | loff_t start, loff_t len) |
731 | { | |
4081363f | 732 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
fbfa2cc5 JK |
733 | struct page *page; |
734 | ||
735 | if (!len) | |
6394328a | 736 | return 0; |
fbfa2cc5 | 737 | |
bd43df02 JK |
738 | f2fs_balance_fs(sbi); |
739 | ||
e479556b | 740 | f2fs_lock_op(sbi); |
64aa7ed9 | 741 | page = get_new_data_page(inode, NULL, index, false); |
e479556b | 742 | f2fs_unlock_op(sbi); |
fbfa2cc5 | 743 | |
6394328a CY |
744 | if (IS_ERR(page)) |
745 | return PTR_ERR(page); | |
746 | ||
747 | f2fs_wait_on_page_writeback(page, DATA); | |
748 | zero_user(page, start, len); | |
749 | set_page_dirty(page); | |
750 | f2fs_put_page(page, 1); | |
751 | return 0; | |
fbfa2cc5 JK |
752 | } |
753 | ||
754 | int truncate_hole(struct inode *inode, pgoff_t pg_start, pgoff_t pg_end) | |
755 | { | |
fbfa2cc5 JK |
756 | int err; |
757 | ||
ea58711e | 758 | while (pg_start < pg_end) { |
fbfa2cc5 | 759 | struct dnode_of_data dn; |
ea58711e | 760 | pgoff_t end_offset, count; |
9eaeba70 | 761 | |
fbfa2cc5 | 762 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
ea58711e | 763 | err = get_dnode_of_data(&dn, pg_start, LOOKUP_NODE); |
fbfa2cc5 | 764 | if (err) { |
ea58711e CY |
765 | if (err == -ENOENT) { |
766 | pg_start++; | |
fbfa2cc5 | 767 | continue; |
ea58711e | 768 | } |
fbfa2cc5 JK |
769 | return err; |
770 | } | |
771 | ||
ea58711e CY |
772 | end_offset = ADDRS_PER_PAGE(dn.node_page, F2FS_I(inode)); |
773 | count = min(end_offset - dn.ofs_in_node, pg_end - pg_start); | |
774 | ||
775 | f2fs_bug_on(F2FS_I_SB(inode), count == 0 || count > end_offset); | |
776 | ||
777 | truncate_data_blocks_range(&dn, count); | |
fbfa2cc5 | 778 | f2fs_put_dnode(&dn); |
ea58711e CY |
779 | |
780 | pg_start += count; | |
fbfa2cc5 JK |
781 | } |
782 | return 0; | |
783 | } | |
784 | ||
a66c7b2f | 785 | static int punch_hole(struct inode *inode, loff_t offset, loff_t len) |
fbfa2cc5 JK |
786 | { |
787 | pgoff_t pg_start, pg_end; | |
788 | loff_t off_start, off_end; | |
b9d777b8 | 789 | int ret; |
fbfa2cc5 | 790 | |
b9d777b8 JK |
791 | ret = f2fs_convert_inline_inode(inode); |
792 | if (ret) | |
793 | return ret; | |
9ffe0fb5 | 794 | |
fbfa2cc5 JK |
795 | pg_start = ((unsigned long long) offset) >> PAGE_CACHE_SHIFT; |
796 | pg_end = ((unsigned long long) offset + len) >> PAGE_CACHE_SHIFT; | |
797 | ||
798 | off_start = offset & (PAGE_CACHE_SIZE - 1); | |
799 | off_end = (offset + len) & (PAGE_CACHE_SIZE - 1); | |
800 | ||
801 | if (pg_start == pg_end) { | |
6394328a | 802 | ret = fill_zero(inode, pg_start, off_start, |
fbfa2cc5 | 803 | off_end - off_start); |
6394328a CY |
804 | if (ret) |
805 | return ret; | |
fbfa2cc5 | 806 | } else { |
6394328a CY |
807 | if (off_start) { |
808 | ret = fill_zero(inode, pg_start++, off_start, | |
809 | PAGE_CACHE_SIZE - off_start); | |
810 | if (ret) | |
811 | return ret; | |
812 | } | |
813 | if (off_end) { | |
814 | ret = fill_zero(inode, pg_end, 0, off_end); | |
815 | if (ret) | |
816 | return ret; | |
817 | } | |
fbfa2cc5 JK |
818 | |
819 | if (pg_start < pg_end) { | |
820 | struct address_space *mapping = inode->i_mapping; | |
821 | loff_t blk_start, blk_end; | |
4081363f | 822 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
1127a3d4 JH |
823 | |
824 | f2fs_balance_fs(sbi); | |
fbfa2cc5 | 825 | |
9edcdabf CY |
826 | blk_start = (loff_t)pg_start << PAGE_CACHE_SHIFT; |
827 | blk_end = (loff_t)pg_end << PAGE_CACHE_SHIFT; | |
fbfa2cc5 JK |
828 | truncate_inode_pages_range(mapping, blk_start, |
829 | blk_end - 1); | |
39936837 | 830 | |
e479556b | 831 | f2fs_lock_op(sbi); |
fbfa2cc5 | 832 | ret = truncate_hole(inode, pg_start, pg_end); |
e479556b | 833 | f2fs_unlock_op(sbi); |
fbfa2cc5 JK |
834 | } |
835 | } | |
836 | ||
fbfa2cc5 JK |
837 | return ret; |
838 | } | |
839 | ||
6e2c64ad JK |
840 | static int __exchange_data_block(struct inode *inode, pgoff_t src, |
841 | pgoff_t dst, bool full) | |
b4ace337 CY |
842 | { |
843 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
844 | struct dnode_of_data dn; | |
6e2c64ad JK |
845 | block_t new_addr; |
846 | bool do_replace = false; | |
847 | int ret; | |
ecbaa406 | 848 | |
6e2c64ad JK |
849 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
850 | ret = get_dnode_of_data(&dn, src, LOOKUP_NODE_RA); | |
851 | if (ret && ret != -ENOENT) { | |
852 | return ret; | |
853 | } else if (ret == -ENOENT) { | |
854 | new_addr = NULL_ADDR; | |
855 | } else { | |
856 | new_addr = dn.data_blkaddr; | |
857 | if (!is_checkpointed_data(sbi, new_addr)) { | |
858 | dn.data_blkaddr = NULL_ADDR; | |
859 | /* do not invalidate this block address */ | |
860 | set_data_blkaddr(&dn); | |
861 | f2fs_update_extent_cache(&dn); | |
862 | do_replace = true; | |
b4ace337 | 863 | } |
6e2c64ad JK |
864 | f2fs_put_dnode(&dn); |
865 | } | |
b4ace337 | 866 | |
6e2c64ad JK |
867 | if (new_addr == NULL_ADDR) |
868 | return full ? truncate_hole(inode, dst, dst + 1) : 0; | |
b4ace337 | 869 | |
6e2c64ad JK |
870 | if (do_replace) { |
871 | struct page *ipage = get_node_page(sbi, inode->i_ino); | |
872 | struct node_info ni; | |
b4ace337 | 873 | |
6e2c64ad JK |
874 | if (IS_ERR(ipage)) { |
875 | ret = PTR_ERR(ipage); | |
876 | goto err_out; | |
877 | } | |
b4ace337 | 878 | |
6e2c64ad JK |
879 | set_new_dnode(&dn, inode, ipage, NULL, 0); |
880 | ret = f2fs_reserve_block(&dn, dst); | |
881 | if (ret) | |
882 | goto err_out; | |
b4ace337 | 883 | |
6e2c64ad | 884 | truncate_data_blocks_range(&dn, 1); |
b4ace337 | 885 | |
6e2c64ad JK |
886 | get_node_info(sbi, dn.nid, &ni); |
887 | f2fs_replace_block(sbi, &dn, dn.data_blkaddr, new_addr, | |
888 | ni.version, true); | |
889 | f2fs_put_dnode(&dn); | |
890 | } else { | |
891 | struct page *psrc, *pdst; | |
892 | ||
a56c7c6f | 893 | psrc = get_lock_data_page(inode, src, true); |
6e2c64ad JK |
894 | if (IS_ERR(psrc)) |
895 | return PTR_ERR(psrc); | |
896 | pdst = get_new_data_page(inode, NULL, dst, false); | |
897 | if (IS_ERR(pdst)) { | |
898 | f2fs_put_page(psrc, 1); | |
899 | return PTR_ERR(pdst); | |
900 | } | |
901 | f2fs_copy_page(psrc, pdst); | |
902 | set_page_dirty(pdst); | |
903 | f2fs_put_page(pdst, 1); | |
904 | f2fs_put_page(psrc, 1); | |
b4ace337 | 905 | |
6e2c64ad JK |
906 | return truncate_hole(inode, src, src + 1); |
907 | } | |
908 | return 0; | |
b4ace337 | 909 | |
6e2c64ad JK |
910 | err_out: |
911 | if (!get_dnode_of_data(&dn, src, LOOKUP_NODE)) { | |
912 | dn.data_blkaddr = new_addr; | |
913 | set_data_blkaddr(&dn); | |
914 | f2fs_update_extent_cache(&dn); | |
915 | f2fs_put_dnode(&dn); | |
916 | } | |
917 | return ret; | |
918 | } | |
b4ace337 | 919 | |
6e2c64ad JK |
920 | static int f2fs_do_collapse(struct inode *inode, pgoff_t start, pgoff_t end) |
921 | { | |
922 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
923 | pgoff_t nrpages = (i_size_read(inode) + PAGE_SIZE - 1) / PAGE_SIZE; | |
924 | int ret = 0; | |
925 | ||
926 | for (; end < nrpages; start++, end++) { | |
927 | f2fs_balance_fs(sbi); | |
928 | f2fs_lock_op(sbi); | |
929 | ret = __exchange_data_block(inode, end, start, true); | |
ecbaa406 | 930 | f2fs_unlock_op(sbi); |
6e2c64ad JK |
931 | if (ret) |
932 | break; | |
b4ace337 | 933 | } |
b4ace337 CY |
934 | return ret; |
935 | } | |
936 | ||
937 | static int f2fs_collapse_range(struct inode *inode, loff_t offset, loff_t len) | |
938 | { | |
939 | pgoff_t pg_start, pg_end; | |
940 | loff_t new_size; | |
941 | int ret; | |
942 | ||
b4ace337 CY |
943 | if (offset + len >= i_size_read(inode)) |
944 | return -EINVAL; | |
945 | ||
946 | /* collapse range should be aligned to block size of f2fs. */ | |
947 | if (offset & (F2FS_BLKSIZE - 1) || len & (F2FS_BLKSIZE - 1)) | |
948 | return -EINVAL; | |
949 | ||
b9d777b8 JK |
950 | ret = f2fs_convert_inline_inode(inode); |
951 | if (ret) | |
952 | return ret; | |
97a7b2c2 | 953 | |
b4ace337 CY |
954 | pg_start = offset >> PAGE_CACHE_SHIFT; |
955 | pg_end = (offset + len) >> PAGE_CACHE_SHIFT; | |
956 | ||
957 | /* write out all dirty pages from offset */ | |
958 | ret = filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX); | |
959 | if (ret) | |
960 | return ret; | |
961 | ||
962 | truncate_pagecache(inode, offset); | |
963 | ||
964 | ret = f2fs_do_collapse(inode, pg_start, pg_end); | |
965 | if (ret) | |
966 | return ret; | |
967 | ||
6e2c64ad JK |
968 | /* write out all moved pages, if possible */ |
969 | filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX); | |
970 | truncate_pagecache(inode, offset); | |
971 | ||
b4ace337 | 972 | new_size = i_size_read(inode) - len; |
6e2c64ad | 973 | truncate_pagecache(inode, new_size); |
b4ace337 CY |
974 | |
975 | ret = truncate_blocks(inode, new_size, true); | |
976 | if (!ret) | |
977 | i_size_write(inode, new_size); | |
978 | ||
979 | return ret; | |
980 | } | |
981 | ||
75cd4e09 CY |
982 | static int f2fs_zero_range(struct inode *inode, loff_t offset, loff_t len, |
983 | int mode) | |
984 | { | |
985 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
986 | struct address_space *mapping = inode->i_mapping; | |
987 | pgoff_t index, pg_start, pg_end; | |
988 | loff_t new_size = i_size_read(inode); | |
989 | loff_t off_start, off_end; | |
990 | int ret = 0; | |
991 | ||
75cd4e09 CY |
992 | ret = inode_newsize_ok(inode, (len + offset)); |
993 | if (ret) | |
994 | return ret; | |
995 | ||
b9d777b8 JK |
996 | ret = f2fs_convert_inline_inode(inode); |
997 | if (ret) | |
998 | return ret; | |
75cd4e09 CY |
999 | |
1000 | ret = filemap_write_and_wait_range(mapping, offset, offset + len - 1); | |
1001 | if (ret) | |
1002 | return ret; | |
1003 | ||
1004 | truncate_pagecache_range(inode, offset, offset + len - 1); | |
1005 | ||
1006 | pg_start = ((unsigned long long) offset) >> PAGE_CACHE_SHIFT; | |
1007 | pg_end = ((unsigned long long) offset + len) >> PAGE_CACHE_SHIFT; | |
1008 | ||
1009 | off_start = offset & (PAGE_CACHE_SIZE - 1); | |
1010 | off_end = (offset + len) & (PAGE_CACHE_SIZE - 1); | |
1011 | ||
1012 | if (pg_start == pg_end) { | |
6394328a CY |
1013 | ret = fill_zero(inode, pg_start, off_start, |
1014 | off_end - off_start); | |
1015 | if (ret) | |
1016 | return ret; | |
1017 | ||
75cd4e09 CY |
1018 | if (offset + len > new_size) |
1019 | new_size = offset + len; | |
1020 | new_size = max_t(loff_t, new_size, offset + len); | |
1021 | } else { | |
1022 | if (off_start) { | |
6394328a CY |
1023 | ret = fill_zero(inode, pg_start++, off_start, |
1024 | PAGE_CACHE_SIZE - off_start); | |
1025 | if (ret) | |
1026 | return ret; | |
1027 | ||
75cd4e09 | 1028 | new_size = max_t(loff_t, new_size, |
9edcdabf | 1029 | (loff_t)pg_start << PAGE_CACHE_SHIFT); |
75cd4e09 CY |
1030 | } |
1031 | ||
1032 | for (index = pg_start; index < pg_end; index++) { | |
1033 | struct dnode_of_data dn; | |
1034 | struct page *ipage; | |
1035 | ||
1036 | f2fs_lock_op(sbi); | |
1037 | ||
1038 | ipage = get_node_page(sbi, inode->i_ino); | |
1039 | if (IS_ERR(ipage)) { | |
1040 | ret = PTR_ERR(ipage); | |
1041 | f2fs_unlock_op(sbi); | |
1042 | goto out; | |
1043 | } | |
1044 | ||
1045 | set_new_dnode(&dn, inode, ipage, NULL, 0); | |
1046 | ret = f2fs_reserve_block(&dn, index); | |
1047 | if (ret) { | |
1048 | f2fs_unlock_op(sbi); | |
1049 | goto out; | |
1050 | } | |
1051 | ||
1052 | if (dn.data_blkaddr != NEW_ADDR) { | |
1053 | invalidate_blocks(sbi, dn.data_blkaddr); | |
1054 | ||
1055 | dn.data_blkaddr = NEW_ADDR; | |
1056 | set_data_blkaddr(&dn); | |
1057 | ||
1058 | dn.data_blkaddr = NULL_ADDR; | |
1059 | f2fs_update_extent_cache(&dn); | |
1060 | } | |
1061 | f2fs_put_dnode(&dn); | |
1062 | f2fs_unlock_op(sbi); | |
1063 | ||
1064 | new_size = max_t(loff_t, new_size, | |
9edcdabf | 1065 | (loff_t)(index + 1) << PAGE_CACHE_SHIFT); |
75cd4e09 CY |
1066 | } |
1067 | ||
1068 | if (off_end) { | |
6394328a CY |
1069 | ret = fill_zero(inode, pg_end, 0, off_end); |
1070 | if (ret) | |
1071 | goto out; | |
1072 | ||
75cd4e09 CY |
1073 | new_size = max_t(loff_t, new_size, offset + len); |
1074 | } | |
1075 | } | |
1076 | ||
1077 | out: | |
1078 | if (!(mode & FALLOC_FL_KEEP_SIZE) && i_size_read(inode) < new_size) { | |
1079 | i_size_write(inode, new_size); | |
1080 | mark_inode_dirty(inode); | |
1081 | update_inode_page(inode); | |
1082 | } | |
1083 | ||
1084 | return ret; | |
1085 | } | |
1086 | ||
f62185d0 CY |
1087 | static int f2fs_insert_range(struct inode *inode, loff_t offset, loff_t len) |
1088 | { | |
1089 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
1090 | pgoff_t pg_start, pg_end, delta, nrpages, idx; | |
1091 | loff_t new_size; | |
6e2c64ad | 1092 | int ret = 0; |
f62185d0 | 1093 | |
f62185d0 CY |
1094 | new_size = i_size_read(inode) + len; |
1095 | if (new_size > inode->i_sb->s_maxbytes) | |
1096 | return -EFBIG; | |
1097 | ||
1098 | if (offset >= i_size_read(inode)) | |
1099 | return -EINVAL; | |
1100 | ||
1101 | /* insert range should be aligned to block size of f2fs. */ | |
1102 | if (offset & (F2FS_BLKSIZE - 1) || len & (F2FS_BLKSIZE - 1)) | |
1103 | return -EINVAL; | |
1104 | ||
b9d777b8 JK |
1105 | ret = f2fs_convert_inline_inode(inode); |
1106 | if (ret) | |
1107 | return ret; | |
97a7b2c2 | 1108 | |
2a340760 JK |
1109 | f2fs_balance_fs(sbi); |
1110 | ||
f62185d0 CY |
1111 | ret = truncate_blocks(inode, i_size_read(inode), true); |
1112 | if (ret) | |
1113 | return ret; | |
1114 | ||
1115 | /* write out all dirty pages from offset */ | |
1116 | ret = filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX); | |
1117 | if (ret) | |
1118 | return ret; | |
1119 | ||
1120 | truncate_pagecache(inode, offset); | |
1121 | ||
1122 | pg_start = offset >> PAGE_CACHE_SHIFT; | |
1123 | pg_end = (offset + len) >> PAGE_CACHE_SHIFT; | |
1124 | delta = pg_end - pg_start; | |
1125 | nrpages = (i_size_read(inode) + PAGE_SIZE - 1) / PAGE_SIZE; | |
1126 | ||
1127 | for (idx = nrpages - 1; idx >= pg_start && idx != -1; idx--) { | |
f62185d0 | 1128 | f2fs_lock_op(sbi); |
6e2c64ad | 1129 | ret = __exchange_data_block(inode, idx, idx + delta, false); |
f62185d0 | 1130 | f2fs_unlock_op(sbi); |
6e2c64ad JK |
1131 | if (ret) |
1132 | break; | |
f62185d0 CY |
1133 | } |
1134 | ||
6e2c64ad JK |
1135 | /* write out all moved pages, if possible */ |
1136 | filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX); | |
1137 | truncate_pagecache(inode, offset); | |
1138 | ||
1139 | if (!ret) | |
1140 | i_size_write(inode, new_size); | |
f62185d0 CY |
1141 | return ret; |
1142 | } | |
1143 | ||
fbfa2cc5 JK |
1144 | static int expand_inode_data(struct inode *inode, loff_t offset, |
1145 | loff_t len, int mode) | |
1146 | { | |
4081363f | 1147 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
fbfa2cc5 JK |
1148 | pgoff_t index, pg_start, pg_end; |
1149 | loff_t new_size = i_size_read(inode); | |
1150 | loff_t off_start, off_end; | |
1151 | int ret = 0; | |
1152 | ||
1153 | ret = inode_newsize_ok(inode, (len + offset)); | |
1154 | if (ret) | |
1155 | return ret; | |
1156 | ||
b9d777b8 JK |
1157 | ret = f2fs_convert_inline_inode(inode); |
1158 | if (ret) | |
1159 | return ret; | |
9e09fc85 | 1160 | |
2a340760 JK |
1161 | f2fs_balance_fs(sbi); |
1162 | ||
fbfa2cc5 JK |
1163 | pg_start = ((unsigned long long) offset) >> PAGE_CACHE_SHIFT; |
1164 | pg_end = ((unsigned long long) offset + len) >> PAGE_CACHE_SHIFT; | |
1165 | ||
1166 | off_start = offset & (PAGE_CACHE_SIZE - 1); | |
1167 | off_end = (offset + len) & (PAGE_CACHE_SIZE - 1); | |
1168 | ||
ead43275 JK |
1169 | f2fs_lock_op(sbi); |
1170 | ||
fbfa2cc5 JK |
1171 | for (index = pg_start; index <= pg_end; index++) { |
1172 | struct dnode_of_data dn; | |
1173 | ||
98397ff3 JK |
1174 | if (index == pg_end && !off_end) |
1175 | goto noalloc; | |
1176 | ||
fbfa2cc5 | 1177 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
b600965c | 1178 | ret = f2fs_reserve_block(&dn, index); |
b600965c | 1179 | if (ret) |
fbfa2cc5 | 1180 | break; |
98397ff3 | 1181 | noalloc: |
fbfa2cc5 JK |
1182 | if (pg_start == pg_end) |
1183 | new_size = offset + len; | |
1184 | else if (index == pg_start && off_start) | |
9edcdabf | 1185 | new_size = (loff_t)(index + 1) << PAGE_CACHE_SHIFT; |
fbfa2cc5 | 1186 | else if (index == pg_end) |
9edcdabf CY |
1187 | new_size = ((loff_t)index << PAGE_CACHE_SHIFT) + |
1188 | off_end; | |
fbfa2cc5 JK |
1189 | else |
1190 | new_size += PAGE_CACHE_SIZE; | |
1191 | } | |
1192 | ||
1193 | if (!(mode & FALLOC_FL_KEEP_SIZE) && | |
1194 | i_size_read(inode) < new_size) { | |
1195 | i_size_write(inode, new_size); | |
1196 | mark_inode_dirty(inode); | |
ead43275 | 1197 | update_inode_page(inode); |
fbfa2cc5 | 1198 | } |
ead43275 | 1199 | f2fs_unlock_op(sbi); |
fbfa2cc5 JK |
1200 | |
1201 | return ret; | |
1202 | } | |
1203 | ||
1204 | static long f2fs_fallocate(struct file *file, int mode, | |
1205 | loff_t offset, loff_t len) | |
1206 | { | |
6131ffaa | 1207 | struct inode *inode = file_inode(file); |
587c0a42 | 1208 | long ret = 0; |
fbfa2cc5 | 1209 | |
c998012b CY |
1210 | /* f2fs only support ->fallocate for regular file */ |
1211 | if (!S_ISREG(inode->i_mode)) | |
1212 | return -EINVAL; | |
1213 | ||
f62185d0 CY |
1214 | if (f2fs_encrypted_inode(inode) && |
1215 | (mode & (FALLOC_FL_COLLAPSE_RANGE | FALLOC_FL_INSERT_RANGE))) | |
fcc85a4d JK |
1216 | return -EOPNOTSUPP; |
1217 | ||
b4ace337 | 1218 | if (mode & ~(FALLOC_FL_KEEP_SIZE | FALLOC_FL_PUNCH_HOLE | |
f62185d0 CY |
1219 | FALLOC_FL_COLLAPSE_RANGE | FALLOC_FL_ZERO_RANGE | |
1220 | FALLOC_FL_INSERT_RANGE)) | |
fbfa2cc5 JK |
1221 | return -EOPNOTSUPP; |
1222 | ||
3375f696 CY |
1223 | mutex_lock(&inode->i_mutex); |
1224 | ||
587c0a42 TY |
1225 | if (mode & FALLOC_FL_PUNCH_HOLE) { |
1226 | if (offset >= inode->i_size) | |
1227 | goto out; | |
1228 | ||
a66c7b2f | 1229 | ret = punch_hole(inode, offset, len); |
b4ace337 CY |
1230 | } else if (mode & FALLOC_FL_COLLAPSE_RANGE) { |
1231 | ret = f2fs_collapse_range(inode, offset, len); | |
75cd4e09 CY |
1232 | } else if (mode & FALLOC_FL_ZERO_RANGE) { |
1233 | ret = f2fs_zero_range(inode, offset, len, mode); | |
f62185d0 CY |
1234 | } else if (mode & FALLOC_FL_INSERT_RANGE) { |
1235 | ret = f2fs_insert_range(inode, offset, len); | |
b4ace337 | 1236 | } else { |
fbfa2cc5 | 1237 | ret = expand_inode_data(inode, offset, len, mode); |
b4ace337 | 1238 | } |
fbfa2cc5 | 1239 | |
3af60a49 NJ |
1240 | if (!ret) { |
1241 | inode->i_mtime = inode->i_ctime = CURRENT_TIME; | |
1242 | mark_inode_dirty(inode); | |
1243 | } | |
3375f696 | 1244 | |
587c0a42 | 1245 | out: |
3375f696 CY |
1246 | mutex_unlock(&inode->i_mutex); |
1247 | ||
c01e2853 | 1248 | trace_f2fs_fallocate(inode, mode, offset, len, ret); |
fbfa2cc5 JK |
1249 | return ret; |
1250 | } | |
1251 | ||
1e84371f JK |
1252 | static int f2fs_release_file(struct inode *inode, struct file *filp) |
1253 | { | |
1254 | /* some remained atomic pages should discarded */ | |
1255 | if (f2fs_is_atomic_file(inode)) | |
1256 | commit_inmem_pages(inode, true); | |
1257 | if (f2fs_is_volatile_file(inode)) { | |
1258 | set_inode_flag(F2FS_I(inode), FI_DROP_CACHE); | |
1259 | filemap_fdatawrite(inode->i_mapping); | |
1260 | clear_inode_flag(F2FS_I(inode), FI_DROP_CACHE); | |
1261 | } | |
1262 | return 0; | |
1263 | } | |
1264 | ||
fbfa2cc5 JK |
1265 | #define F2FS_REG_FLMASK (~(FS_DIRSYNC_FL | FS_TOPDIR_FL)) |
1266 | #define F2FS_OTHER_FLMASK (FS_NODUMP_FL | FS_NOATIME_FL) | |
1267 | ||
1268 | static inline __u32 f2fs_mask_flags(umode_t mode, __u32 flags) | |
1269 | { | |
1270 | if (S_ISDIR(mode)) | |
1271 | return flags; | |
1272 | else if (S_ISREG(mode)) | |
1273 | return flags & F2FS_REG_FLMASK; | |
1274 | else | |
1275 | return flags & F2FS_OTHER_FLMASK; | |
1276 | } | |
1277 | ||
52656e6c | 1278 | static int f2fs_ioc_getflags(struct file *filp, unsigned long arg) |
fbfa2cc5 | 1279 | { |
6131ffaa | 1280 | struct inode *inode = file_inode(filp); |
fbfa2cc5 | 1281 | struct f2fs_inode_info *fi = F2FS_I(inode); |
52656e6c JK |
1282 | unsigned int flags = fi->i_flags & FS_FL_USER_VISIBLE; |
1283 | return put_user(flags, (int __user *)arg); | |
1284 | } | |
fbfa2cc5 | 1285 | |
52656e6c JK |
1286 | static int f2fs_ioc_setflags(struct file *filp, unsigned long arg) |
1287 | { | |
1288 | struct inode *inode = file_inode(filp); | |
1289 | struct f2fs_inode_info *fi = F2FS_I(inode); | |
1290 | unsigned int flags = fi->i_flags & FS_FL_USER_VISIBLE; | |
1291 | unsigned int oldflags; | |
1292 | int ret; | |
fbfa2cc5 | 1293 | |
52656e6c JK |
1294 | ret = mnt_want_write_file(filp); |
1295 | if (ret) | |
1296 | return ret; | |
fbfa2cc5 | 1297 | |
52656e6c JK |
1298 | if (!inode_owner_or_capable(inode)) { |
1299 | ret = -EACCES; | |
1300 | goto out; | |
1301 | } | |
fbfa2cc5 | 1302 | |
52656e6c JK |
1303 | if (get_user(flags, (int __user *)arg)) { |
1304 | ret = -EFAULT; | |
1305 | goto out; | |
1306 | } | |
fbfa2cc5 | 1307 | |
52656e6c | 1308 | flags = f2fs_mask_flags(inode->i_mode, flags); |
fbfa2cc5 | 1309 | |
52656e6c | 1310 | mutex_lock(&inode->i_mutex); |
fbfa2cc5 | 1311 | |
52656e6c | 1312 | oldflags = fi->i_flags; |
fbfa2cc5 | 1313 | |
52656e6c JK |
1314 | if ((flags ^ oldflags) & (FS_APPEND_FL | FS_IMMUTABLE_FL)) { |
1315 | if (!capable(CAP_LINUX_IMMUTABLE)) { | |
1316 | mutex_unlock(&inode->i_mutex); | |
1317 | ret = -EPERM; | |
1318 | goto out; | |
fbfa2cc5 | 1319 | } |
52656e6c | 1320 | } |
fbfa2cc5 | 1321 | |
52656e6c JK |
1322 | flags = flags & FS_FL_USER_MODIFIABLE; |
1323 | flags |= oldflags & ~FS_FL_USER_MODIFIABLE; | |
1324 | fi->i_flags = flags; | |
1325 | mutex_unlock(&inode->i_mutex); | |
fbfa2cc5 | 1326 | |
52656e6c JK |
1327 | f2fs_set_inode_flags(inode); |
1328 | inode->i_ctime = CURRENT_TIME; | |
1329 | mark_inode_dirty(inode); | |
fbfa2cc5 | 1330 | out: |
52656e6c JK |
1331 | mnt_drop_write_file(filp); |
1332 | return ret; | |
1333 | } | |
4b2fecc8 | 1334 | |
d49f3e89 CY |
1335 | static int f2fs_ioc_getversion(struct file *filp, unsigned long arg) |
1336 | { | |
1337 | struct inode *inode = file_inode(filp); | |
1338 | ||
1339 | return put_user(inode->i_generation, (int __user *)arg); | |
1340 | } | |
1341 | ||
88b88a66 JK |
1342 | static int f2fs_ioc_start_atomic_write(struct file *filp) |
1343 | { | |
1344 | struct inode *inode = file_inode(filp); | |
f4c9c743 | 1345 | int ret; |
88b88a66 JK |
1346 | |
1347 | if (!inode_owner_or_capable(inode)) | |
1348 | return -EACCES; | |
1349 | ||
1e84371f JK |
1350 | if (f2fs_is_atomic_file(inode)) |
1351 | return 0; | |
88b88a66 | 1352 | |
f4c9c743 CY |
1353 | ret = f2fs_convert_inline_inode(inode); |
1354 | if (ret) | |
1355 | return ret; | |
88b88a66 | 1356 | |
f4c9c743 CY |
1357 | set_inode_flag(F2FS_I(inode), FI_ATOMIC_FILE); |
1358 | return 0; | |
88b88a66 JK |
1359 | } |
1360 | ||
1361 | static int f2fs_ioc_commit_atomic_write(struct file *filp) | |
1362 | { | |
1363 | struct inode *inode = file_inode(filp); | |
1364 | int ret; | |
1365 | ||
1366 | if (!inode_owner_or_capable(inode)) | |
1367 | return -EACCES; | |
1368 | ||
02a1335f JK |
1369 | if (f2fs_is_volatile_file(inode)) |
1370 | return 0; | |
1371 | ||
88b88a66 JK |
1372 | ret = mnt_want_write_file(filp); |
1373 | if (ret) | |
1374 | return ret; | |
1375 | ||
6282adbf JK |
1376 | if (f2fs_is_atomic_file(inode)) { |
1377 | clear_inode_flag(F2FS_I(inode), FI_ATOMIC_FILE); | |
edb27dee JK |
1378 | ret = commit_inmem_pages(inode, false); |
1379 | if (ret) | |
1380 | goto err_out; | |
6282adbf | 1381 | } |
88b88a66 | 1382 | |
a5f64b6a | 1383 | ret = f2fs_sync_file(filp, 0, LLONG_MAX, 0); |
edb27dee | 1384 | err_out: |
88b88a66 JK |
1385 | mnt_drop_write_file(filp); |
1386 | return ret; | |
1387 | } | |
1388 | ||
02a1335f JK |
1389 | static int f2fs_ioc_start_volatile_write(struct file *filp) |
1390 | { | |
1391 | struct inode *inode = file_inode(filp); | |
f4c9c743 | 1392 | int ret; |
02a1335f JK |
1393 | |
1394 | if (!inode_owner_or_capable(inode)) | |
1395 | return -EACCES; | |
1396 | ||
1e84371f JK |
1397 | if (f2fs_is_volatile_file(inode)) |
1398 | return 0; | |
1399 | ||
f4c9c743 CY |
1400 | ret = f2fs_convert_inline_inode(inode); |
1401 | if (ret) | |
1402 | return ret; | |
b3d208f9 | 1403 | |
f4c9c743 CY |
1404 | set_inode_flag(F2FS_I(inode), FI_VOLATILE_FILE); |
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 | ||
d7b8b384 JK |
1436 | clear_inode_flag(F2FS_I(inode), FI_ATOMIC_FILE); |
1437 | clear_inode_flag(F2FS_I(inode), FI_VOLATILE_FILE); | |
1438 | commit_inmem_pages(inode, true); | |
de6a8ec9 | 1439 | |
1e84371f JK |
1440 | mnt_drop_write_file(filp); |
1441 | return ret; | |
1442 | } | |
1443 | ||
1abff93d JK |
1444 | static int f2fs_ioc_shutdown(struct file *filp, unsigned long arg) |
1445 | { | |
1446 | struct inode *inode = file_inode(filp); | |
1447 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
1448 | struct super_block *sb = sbi->sb; | |
1449 | __u32 in; | |
1450 | ||
1451 | if (!capable(CAP_SYS_ADMIN)) | |
1452 | return -EPERM; | |
1453 | ||
1454 | if (get_user(in, (__u32 __user *)arg)) | |
1455 | return -EFAULT; | |
1456 | ||
1457 | switch (in) { | |
1458 | case F2FS_GOING_DOWN_FULLSYNC: | |
1459 | sb = freeze_bdev(sb->s_bdev); | |
1460 | if (sb && !IS_ERR(sb)) { | |
1461 | f2fs_stop_checkpoint(sbi); | |
1462 | thaw_bdev(sb->s_bdev, sb); | |
1463 | } | |
1464 | break; | |
1465 | case F2FS_GOING_DOWN_METASYNC: | |
1466 | /* do checkpoint only */ | |
1467 | f2fs_sync_fs(sb, 1); | |
1468 | f2fs_stop_checkpoint(sbi); | |
1469 | break; | |
1470 | case F2FS_GOING_DOWN_NOSYNC: | |
1471 | f2fs_stop_checkpoint(sbi); | |
1472 | break; | |
c912a829 JK |
1473 | case F2FS_GOING_DOWN_METAFLUSH: |
1474 | sync_meta_pages(sbi, META, LONG_MAX); | |
1475 | f2fs_stop_checkpoint(sbi); | |
1476 | break; | |
1abff93d JK |
1477 | default: |
1478 | return -EINVAL; | |
1479 | } | |
1480 | return 0; | |
1481 | } | |
1482 | ||
52656e6c JK |
1483 | static int f2fs_ioc_fitrim(struct file *filp, unsigned long arg) |
1484 | { | |
1485 | struct inode *inode = file_inode(filp); | |
1486 | struct super_block *sb = inode->i_sb; | |
1487 | struct request_queue *q = bdev_get_queue(sb->s_bdev); | |
1488 | struct fstrim_range range; | |
1489 | int ret; | |
4b2fecc8 | 1490 | |
52656e6c JK |
1491 | if (!capable(CAP_SYS_ADMIN)) |
1492 | return -EPERM; | |
4b2fecc8 | 1493 | |
52656e6c JK |
1494 | if (!blk_queue_discard(q)) |
1495 | return -EOPNOTSUPP; | |
4b2fecc8 | 1496 | |
52656e6c JK |
1497 | if (copy_from_user(&range, (struct fstrim_range __user *)arg, |
1498 | sizeof(range))) | |
1499 | return -EFAULT; | |
4b2fecc8 | 1500 | |
52656e6c JK |
1501 | range.minlen = max((unsigned int)range.minlen, |
1502 | q->limits.discard_granularity); | |
1503 | ret = f2fs_trim_fs(F2FS_SB(sb), &range); | |
1504 | if (ret < 0) | |
1505 | return ret; | |
4b2fecc8 | 1506 | |
52656e6c JK |
1507 | if (copy_to_user((struct fstrim_range __user *)arg, &range, |
1508 | sizeof(range))) | |
1509 | return -EFAULT; | |
1510 | return 0; | |
1511 | } | |
1512 | ||
f424f664 JK |
1513 | static bool uuid_is_nonzero(__u8 u[16]) |
1514 | { | |
1515 | int i; | |
1516 | ||
1517 | for (i = 0; i < 16; i++) | |
1518 | if (u[i]) | |
1519 | return true; | |
1520 | return false; | |
1521 | } | |
1522 | ||
1523 | static int f2fs_ioc_set_encryption_policy(struct file *filp, unsigned long arg) | |
1524 | { | |
1525 | #ifdef CONFIG_F2FS_FS_ENCRYPTION | |
1526 | struct f2fs_encryption_policy policy; | |
1527 | struct inode *inode = file_inode(filp); | |
1528 | ||
1529 | if (copy_from_user(&policy, (struct f2fs_encryption_policy __user *)arg, | |
1530 | sizeof(policy))) | |
1531 | return -EFAULT; | |
1532 | ||
f424f664 JK |
1533 | return f2fs_process_policy(&policy, inode); |
1534 | #else | |
1535 | return -EOPNOTSUPP; | |
1536 | #endif | |
1537 | } | |
1538 | ||
1539 | static int f2fs_ioc_get_encryption_policy(struct file *filp, unsigned long arg) | |
1540 | { | |
1541 | #ifdef CONFIG_F2FS_FS_ENCRYPTION | |
1542 | struct f2fs_encryption_policy policy; | |
1543 | struct inode *inode = file_inode(filp); | |
1544 | int err; | |
1545 | ||
1546 | err = f2fs_get_policy(inode, &policy); | |
1547 | if (err) | |
1548 | return err; | |
1549 | ||
1550 | if (copy_to_user((struct f2fs_encryption_policy __user *)arg, &policy, | |
1551 | sizeof(policy))) | |
1552 | return -EFAULT; | |
1553 | return 0; | |
1554 | #else | |
1555 | return -EOPNOTSUPP; | |
1556 | #endif | |
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); | |
1637 | struct f2fs_map_blocks map; | |
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 | ||
1654 | f2fs_balance_fs(sbi); | |
1655 | ||
1656 | mutex_lock(&inode->i_mutex); | |
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: | |
1767 | mutex_unlock(&inode->i_mutex); | |
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); | |
1809 | if (err < 0) | |
1810 | goto out; | |
1811 | ||
1812 | if (copy_to_user((struct f2fs_defragment __user *)arg, &range, | |
1813 | sizeof(range))) | |
1814 | err = -EFAULT; | |
1815 | out: | |
1816 | mnt_drop_write_file(filp); | |
1817 | return err; | |
1818 | } | |
1819 | ||
52656e6c JK |
1820 | long f2fs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) |
1821 | { | |
1822 | switch (cmd) { | |
1823 | case F2FS_IOC_GETFLAGS: | |
1824 | return f2fs_ioc_getflags(filp, arg); | |
1825 | case F2FS_IOC_SETFLAGS: | |
1826 | return f2fs_ioc_setflags(filp, arg); | |
d49f3e89 CY |
1827 | case F2FS_IOC_GETVERSION: |
1828 | return f2fs_ioc_getversion(filp, arg); | |
88b88a66 JK |
1829 | case F2FS_IOC_START_ATOMIC_WRITE: |
1830 | return f2fs_ioc_start_atomic_write(filp); | |
1831 | case F2FS_IOC_COMMIT_ATOMIC_WRITE: | |
1832 | return f2fs_ioc_commit_atomic_write(filp); | |
02a1335f JK |
1833 | case F2FS_IOC_START_VOLATILE_WRITE: |
1834 | return f2fs_ioc_start_volatile_write(filp); | |
1e84371f JK |
1835 | case F2FS_IOC_RELEASE_VOLATILE_WRITE: |
1836 | return f2fs_ioc_release_volatile_write(filp); | |
1837 | case F2FS_IOC_ABORT_VOLATILE_WRITE: | |
1838 | return f2fs_ioc_abort_volatile_write(filp); | |
1abff93d JK |
1839 | case F2FS_IOC_SHUTDOWN: |
1840 | return f2fs_ioc_shutdown(filp, arg); | |
52656e6c JK |
1841 | case FITRIM: |
1842 | return f2fs_ioc_fitrim(filp, arg); | |
f424f664 JK |
1843 | case F2FS_IOC_SET_ENCRYPTION_POLICY: |
1844 | return f2fs_ioc_set_encryption_policy(filp, arg); | |
1845 | case F2FS_IOC_GET_ENCRYPTION_POLICY: | |
1846 | return f2fs_ioc_get_encryption_policy(filp, arg); | |
1847 | case F2FS_IOC_GET_ENCRYPTION_PWSALT: | |
1848 | return f2fs_ioc_get_encryption_pwsalt(filp, arg); | |
c1c1b583 CY |
1849 | case F2FS_IOC_GARBAGE_COLLECT: |
1850 | return f2fs_ioc_gc(filp, arg); | |
456b88e4 CY |
1851 | case F2FS_IOC_WRITE_CHECKPOINT: |
1852 | return f2fs_ioc_write_checkpoint(filp, arg); | |
d323d005 CY |
1853 | case F2FS_IOC_DEFRAGMENT: |
1854 | return f2fs_ioc_defragment(filp, arg); | |
fbfa2cc5 JK |
1855 | default: |
1856 | return -ENOTTY; | |
1857 | } | |
1858 | } | |
1859 | ||
fcc85a4d JK |
1860 | static ssize_t f2fs_file_write_iter(struct kiocb *iocb, struct iov_iter *from) |
1861 | { | |
1862 | struct inode *inode = file_inode(iocb->ki_filp); | |
1863 | ||
1864 | if (f2fs_encrypted_inode(inode) && | |
1865 | !f2fs_has_encryption_key(inode) && | |
1866 | f2fs_get_encryption_info(inode)) | |
1867 | return -EACCES; | |
1868 | ||
1869 | return generic_file_write_iter(iocb, from); | |
1870 | } | |
1871 | ||
e9750824 NJ |
1872 | #ifdef CONFIG_COMPAT |
1873 | long f2fs_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg) | |
1874 | { | |
1875 | switch (cmd) { | |
1876 | case F2FS_IOC32_GETFLAGS: | |
1877 | cmd = F2FS_IOC_GETFLAGS; | |
1878 | break; | |
1879 | case F2FS_IOC32_SETFLAGS: | |
1880 | cmd = F2FS_IOC_SETFLAGS; | |
1881 | break; | |
04ef4b62 CY |
1882 | case F2FS_IOC32_GETVERSION: |
1883 | cmd = F2FS_IOC_GETVERSION; | |
1884 | break; | |
1885 | case F2FS_IOC_START_ATOMIC_WRITE: | |
1886 | case F2FS_IOC_COMMIT_ATOMIC_WRITE: | |
1887 | case F2FS_IOC_START_VOLATILE_WRITE: | |
1888 | case F2FS_IOC_RELEASE_VOLATILE_WRITE: | |
1889 | case F2FS_IOC_ABORT_VOLATILE_WRITE: | |
1890 | case F2FS_IOC_SHUTDOWN: | |
1891 | case F2FS_IOC_SET_ENCRYPTION_POLICY: | |
1892 | case F2FS_IOC_GET_ENCRYPTION_PWSALT: | |
1893 | case F2FS_IOC_GET_ENCRYPTION_POLICY: | |
1894 | case F2FS_IOC_GARBAGE_COLLECT: | |
1895 | case F2FS_IOC_WRITE_CHECKPOINT: | |
1896 | case F2FS_IOC_DEFRAGMENT: | |
1897 | break; | |
e9750824 NJ |
1898 | default: |
1899 | return -ENOIOCTLCMD; | |
1900 | } | |
1901 | return f2fs_ioctl(file, cmd, (unsigned long) compat_ptr(arg)); | |
1902 | } | |
1903 | #endif | |
1904 | ||
fbfa2cc5 | 1905 | const struct file_operations f2fs_file_operations = { |
267378d4 | 1906 | .llseek = f2fs_llseek, |
aad4f8bb | 1907 | .read_iter = generic_file_read_iter, |
fcc85a4d JK |
1908 | .write_iter = f2fs_file_write_iter, |
1909 | .open = f2fs_file_open, | |
12662234 | 1910 | .release = f2fs_release_file, |
fbfa2cc5 JK |
1911 | .mmap = f2fs_file_mmap, |
1912 | .fsync = f2fs_sync_file, | |
1913 | .fallocate = f2fs_fallocate, | |
1914 | .unlocked_ioctl = f2fs_ioctl, | |
e9750824 NJ |
1915 | #ifdef CONFIG_COMPAT |
1916 | .compat_ioctl = f2fs_compat_ioctl, | |
1917 | #endif | |
fbfa2cc5 | 1918 | .splice_read = generic_file_splice_read, |
8d020765 | 1919 | .splice_write = iter_file_splice_write, |
fbfa2cc5 | 1920 | }; |