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Commit | Line | Data |
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0a8165d7 | 1 | /* |
fbfa2cc5 JK |
2 | * fs/f2fs/file.c |
3 | * | |
4 | * Copyright (c) 2012 Samsung Electronics Co., Ltd. | |
5 | * http://www.samsung.com/ | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License version 2 as | |
9 | * published by the Free Software Foundation. | |
10 | */ | |
11 | #include <linux/fs.h> | |
12 | #include <linux/f2fs_fs.h> | |
13 | #include <linux/stat.h> | |
14 | #include <linux/buffer_head.h> | |
15 | #include <linux/writeback.h> | |
ae51fb31 | 16 | #include <linux/blkdev.h> |
fbfa2cc5 JK |
17 | #include <linux/falloc.h> |
18 | #include <linux/types.h> | |
e9750824 | 19 | #include <linux/compat.h> |
fbfa2cc5 JK |
20 | #include <linux/uaccess.h> |
21 | #include <linux/mount.h> | |
7f7670fe | 22 | #include <linux/pagevec.h> |
dc91de78 | 23 | #include <linux/uio.h> |
8da4b8c4 | 24 | #include <linux/uuid.h> |
4dd6f977 | 25 | #include <linux/file.h> |
fbfa2cc5 JK |
26 | |
27 | #include "f2fs.h" | |
28 | #include "node.h" | |
29 | #include "segment.h" | |
30 | #include "xattr.h" | |
31 | #include "acl.h" | |
c1c1b583 | 32 | #include "gc.h" |
db9f7c1a | 33 | #include "trace.h" |
a2a4a7e4 | 34 | #include <trace/events/f2fs.h> |
fbfa2cc5 | 35 | |
5a3a2d83 QS |
36 | static int f2fs_filemap_fault(struct vm_fault *vmf) |
37 | { | |
38 | struct inode *inode = file_inode(vmf->vma->vm_file); | |
39 | int err; | |
40 | ||
41 | down_read(&F2FS_I(inode)->i_mmap_sem); | |
42 | err = filemap_fault(vmf); | |
43 | up_read(&F2FS_I(inode)->i_mmap_sem); | |
44 | ||
45 | return err; | |
46 | } | |
47 | ||
11bac800 | 48 | static int f2fs_vm_page_mkwrite(struct vm_fault *vmf) |
fbfa2cc5 JK |
49 | { |
50 | struct page *page = vmf->page; | |
11bac800 | 51 | struct inode *inode = file_inode(vmf->vma->vm_file); |
4081363f | 52 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
fbfa2cc5 | 53 | struct dnode_of_data dn; |
e479556b | 54 | int err; |
fbfa2cc5 | 55 | |
fbfa2cc5 | 56 | sb_start_pagefault(inode->i_sb); |
b3d208f9 JK |
57 | |
58 | f2fs_bug_on(sbi, f2fs_has_inline_data(inode)); | |
b067ba1f | 59 | |
fbfa2cc5 | 60 | /* block allocation */ |
e479556b | 61 | f2fs_lock_op(sbi); |
b3d208f9 | 62 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
b600965c | 63 | err = f2fs_reserve_block(&dn, page->index); |
9ba69cf9 JK |
64 | if (err) { |
65 | f2fs_unlock_op(sbi); | |
b600965c | 66 | goto out; |
9ba69cf9 JK |
67 | } |
68 | f2fs_put_dnode(&dn); | |
69 | f2fs_unlock_op(sbi); | |
fbfa2cc5 | 70 | |
2c4db1a6 | 71 | f2fs_balance_fs(sbi, dn.node_changed); |
2a340760 | 72 | |
11bac800 | 73 | file_update_time(vmf->vma->vm_file); |
5a3a2d83 | 74 | down_read(&F2FS_I(inode)->i_mmap_sem); |
fbfa2cc5 | 75 | lock_page(page); |
6bacf52f | 76 | if (unlikely(page->mapping != inode->i_mapping || |
9851e6e1 | 77 | page_offset(page) > i_size_read(inode) || |
6bacf52f | 78 | !PageUptodate(page))) { |
fbfa2cc5 JK |
79 | unlock_page(page); |
80 | err = -EFAULT; | |
5a3a2d83 | 81 | goto out_sem; |
fbfa2cc5 JK |
82 | } |
83 | ||
84 | /* | |
85 | * check to see if the page is mapped already (no holes) | |
86 | */ | |
87 | if (PageMappedToDisk(page)) | |
9851e6e1 | 88 | goto mapped; |
fbfa2cc5 JK |
89 | |
90 | /* page is wholly or partially inside EOF */ | |
09cbfeaf | 91 | if (((loff_t)(page->index + 1) << PAGE_SHIFT) > |
9edcdabf | 92 | i_size_read(inode)) { |
fbfa2cc5 | 93 | unsigned offset; |
09cbfeaf KS |
94 | offset = i_size_read(inode) & ~PAGE_MASK; |
95 | zero_user_segment(page, offset, PAGE_SIZE); | |
fbfa2cc5 JK |
96 | } |
97 | set_page_dirty(page); | |
237c0790 JK |
98 | if (!PageUptodate(page)) |
99 | SetPageUptodate(page); | |
fbfa2cc5 | 100 | |
b0af6d49 CY |
101 | f2fs_update_iostat(sbi, APP_MAPPED_IO, F2FS_BLKSIZE); |
102 | ||
e943a10d | 103 | trace_f2fs_vm_page_mkwrite(page, DATA); |
9851e6e1 NJ |
104 | mapped: |
105 | /* fill the page */ | |
fec1d657 | 106 | f2fs_wait_on_page_writeback(page, DATA, false); |
08b39fbd CY |
107 | |
108 | /* wait for GCed encrypted page writeback */ | |
1958593e | 109 | if (f2fs_encrypted_file(inode)) |
d4c759ee | 110 | f2fs_wait_on_block_writeback(sbi, dn.data_blkaddr); |
08b39fbd | 111 | |
5a3a2d83 QS |
112 | out_sem: |
113 | up_read(&F2FS_I(inode)->i_mmap_sem); | |
fbfa2cc5 JK |
114 | out: |
115 | sb_end_pagefault(inode->i_sb); | |
d0239e1b | 116 | f2fs_update_time(sbi, REQ_TIME); |
fbfa2cc5 JK |
117 | return block_page_mkwrite_return(err); |
118 | } | |
119 | ||
120 | static const struct vm_operations_struct f2fs_file_vm_ops = { | |
5a3a2d83 | 121 | .fault = f2fs_filemap_fault, |
f1820361 | 122 | .map_pages = filemap_map_pages, |
692bb55d | 123 | .page_mkwrite = f2fs_vm_page_mkwrite, |
fbfa2cc5 JK |
124 | }; |
125 | ||
354a3399 JK |
126 | static int get_parent_ino(struct inode *inode, nid_t *pino) |
127 | { | |
128 | struct dentry *dentry; | |
129 | ||
130 | inode = igrab(inode); | |
131 | dentry = d_find_any_alias(inode); | |
132 | iput(inode); | |
133 | if (!dentry) | |
134 | return 0; | |
135 | ||
f0947e5c JK |
136 | *pino = parent_ino(dentry); |
137 | dput(dentry); | |
354a3399 JK |
138 | return 1; |
139 | } | |
140 | ||
9d1589ef CY |
141 | static inline bool need_do_checkpoint(struct inode *inode) |
142 | { | |
4081363f | 143 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
9d1589ef CY |
144 | bool need_cp = false; |
145 | ||
146 | if (!S_ISREG(inode->i_mode) || inode->i_nlink != 1) | |
147 | need_cp = true; | |
bbf156f7 | 148 | else if (is_sbi_flag_set(sbi, SBI_NEED_CP)) |
e7d55452 | 149 | need_cp = true; |
9d1589ef CY |
150 | else if (file_wrong_pino(inode)) |
151 | need_cp = true; | |
152 | else if (!space_for_roll_forward(sbi)) | |
153 | need_cp = true; | |
154 | else if (!is_checkpointed_node(sbi, F2FS_I(inode)->i_pino)) | |
155 | need_cp = true; | |
d5053a34 JK |
156 | else if (test_opt(sbi, FASTBOOT)) |
157 | need_cp = true; | |
a344b9fd JK |
158 | else if (sbi->active_logs == 2) |
159 | need_cp = true; | |
9d1589ef CY |
160 | |
161 | return need_cp; | |
162 | } | |
163 | ||
9c7bb702 CL |
164 | static bool need_inode_page_update(struct f2fs_sb_info *sbi, nid_t ino) |
165 | { | |
166 | struct page *i = find_get_page(NODE_MAPPING(sbi), ino); | |
167 | bool ret = false; | |
168 | /* But we need to avoid that there are some inode updates */ | |
169 | if ((i && PageDirty(i)) || need_inode_block_update(sbi, ino)) | |
170 | ret = true; | |
171 | f2fs_put_page(i, 0); | |
172 | return ret; | |
173 | } | |
174 | ||
51455b19 CL |
175 | static void try_to_fix_pino(struct inode *inode) |
176 | { | |
177 | struct f2fs_inode_info *fi = F2FS_I(inode); | |
178 | nid_t pino; | |
179 | ||
180 | down_write(&fi->i_sem); | |
51455b19 CL |
181 | if (file_wrong_pino(inode) && inode->i_nlink == 1 && |
182 | get_parent_ino(inode, &pino)) { | |
205b9822 | 183 | f2fs_i_pino_write(inode, pino); |
51455b19 | 184 | file_got_pino(inode); |
51455b19 | 185 | } |
ee6d182f | 186 | up_write(&fi->i_sem); |
51455b19 CL |
187 | } |
188 | ||
608514de JK |
189 | static int f2fs_do_sync_file(struct file *file, loff_t start, loff_t end, |
190 | int datasync, bool atomic) | |
fbfa2cc5 JK |
191 | { |
192 | struct inode *inode = file->f_mapping->host; | |
4081363f | 193 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
2403c155 | 194 | nid_t ino = inode->i_ino; |
fbfa2cc5 JK |
195 | int ret = 0; |
196 | bool need_cp = false; | |
197 | struct writeback_control wbc = { | |
c81bf1c8 | 198 | .sync_mode = WB_SYNC_ALL, |
fbfa2cc5 JK |
199 | .nr_to_write = LONG_MAX, |
200 | .for_reclaim = 0, | |
201 | }; | |
202 | ||
6bacf52f | 203 | if (unlikely(f2fs_readonly(inode->i_sb))) |
1fa95b0b NJ |
204 | return 0; |
205 | ||
a2a4a7e4 | 206 | trace_f2fs_sync_file_enter(inode); |
ea1aa12c JK |
207 | |
208 | /* if fdatasync is triggered, let's do in-place-update */ | |
c46a155b | 209 | if (datasync || get_dirty_pages(inode) <= SM_I(sbi)->min_fsync_blocks) |
91942321 | 210 | set_inode_flag(inode, FI_NEED_IPU); |
3b49c9a1 | 211 | ret = file_write_and_wait_range(file, start, end); |
91942321 | 212 | clear_inode_flag(inode, FI_NEED_IPU); |
c1ce1b02 | 213 | |
a2a4a7e4 NJ |
214 | if (ret) { |
215 | trace_f2fs_sync_file_exit(inode, need_cp, datasync, ret); | |
fbfa2cc5 | 216 | return ret; |
a2a4a7e4 | 217 | } |
fbfa2cc5 | 218 | |
9c7bb702 | 219 | /* if the inode is dirty, let's recover all the time */ |
281518c6 | 220 | if (!f2fs_skip_inode_update(inode, datasync)) { |
2286c020 | 221 | f2fs_write_inode(inode, NULL); |
9c7bb702 CL |
222 | goto go_write; |
223 | } | |
224 | ||
6d99ba41 JK |
225 | /* |
226 | * if there is no written data, don't waste time to write recovery info. | |
227 | */ | |
91942321 | 228 | if (!is_inode_flag_set(inode, FI_APPEND_WRITE) && |
2403c155 | 229 | !exist_written_data(sbi, ino, APPEND_INO)) { |
19c9c466 | 230 | |
9c7bb702 CL |
231 | /* it may call write_inode just prior to fsync */ |
232 | if (need_inode_page_update(sbi, ino)) | |
19c9c466 | 233 | goto go_write; |
19c9c466 | 234 | |
91942321 | 235 | if (is_inode_flag_set(inode, FI_UPDATE_WRITE) || |
2403c155 | 236 | exist_written_data(sbi, ino, UPDATE_INO)) |
6d99ba41 JK |
237 | goto flush_out; |
238 | goto out; | |
239 | } | |
19c9c466 | 240 | go_write: |
e5d2385e JK |
241 | /* |
242 | * Both of fdatasync() and fsync() are able to be recovered from | |
243 | * sudden-power-off. | |
244 | */ | |
91942321 | 245 | down_read(&F2FS_I(inode)->i_sem); |
9d1589ef | 246 | need_cp = need_do_checkpoint(inode); |
91942321 | 247 | up_read(&F2FS_I(inode)->i_sem); |
d928bfbf | 248 | |
fbfa2cc5 JK |
249 | if (need_cp) { |
250 | /* all the dirty node pages should be flushed for POR */ | |
251 | ret = f2fs_sync_fs(inode->i_sb, 1); | |
d928bfbf | 252 | |
51455b19 CL |
253 | /* |
254 | * We've secured consistency through sync_fs. Following pino | |
255 | * will be used only for fsynced inodes after checkpoint. | |
256 | */ | |
257 | try_to_fix_pino(inode); | |
91942321 JK |
258 | clear_inode_flag(inode, FI_APPEND_WRITE); |
259 | clear_inode_flag(inode, FI_UPDATE_WRITE); | |
51455b19 CL |
260 | goto out; |
261 | } | |
88bd02c9 | 262 | sync_nodes: |
26de9b11 | 263 | ret = fsync_node_pages(sbi, inode, &wbc, atomic); |
c267ec15 JK |
264 | if (ret) |
265 | goto out; | |
51455b19 | 266 | |
871f599f | 267 | /* if cp_error was enabled, we should avoid infinite loop */ |
6d5a1495 CY |
268 | if (unlikely(f2fs_cp_error(sbi))) { |
269 | ret = -EIO; | |
871f599f | 270 | goto out; |
6d5a1495 | 271 | } |
871f599f | 272 | |
51455b19 | 273 | if (need_inode_block_update(sbi, ino)) { |
7c45729a | 274 | f2fs_mark_inode_dirty_sync(inode, true); |
51455b19 CL |
275 | f2fs_write_inode(inode, NULL); |
276 | goto sync_nodes; | |
fbfa2cc5 | 277 | } |
51455b19 | 278 | |
b6a245eb JK |
279 | /* |
280 | * If it's atomic_write, it's just fine to keep write ordering. So | |
281 | * here we don't need to wait for node write completion, since we use | |
282 | * node chain which serializes node blocks. If one of node writes are | |
283 | * reordered, we can see simply broken chain, resulting in stopping | |
284 | * roll-forward recovery. It means we'll recover all or none node blocks | |
285 | * given fsync mark. | |
286 | */ | |
287 | if (!atomic) { | |
288 | ret = wait_on_node_pages_writeback(sbi, ino); | |
289 | if (ret) | |
290 | goto out; | |
291 | } | |
51455b19 CL |
292 | |
293 | /* once recovery info is written, don't need to tack this */ | |
a49324f1 | 294 | remove_ino_entry(sbi, ino, APPEND_INO); |
91942321 | 295 | clear_inode_flag(inode, FI_APPEND_WRITE); |
51455b19 | 296 | flush_out: |
a49324f1 | 297 | remove_ino_entry(sbi, ino, UPDATE_INO); |
91942321 | 298 | clear_inode_flag(inode, FI_UPDATE_WRITE); |
e7c75ab0 JK |
299 | if (!atomic) |
300 | ret = f2fs_issue_flush(sbi); | |
d0239e1b | 301 | f2fs_update_time(sbi, REQ_TIME); |
fbfa2cc5 | 302 | out: |
a2a4a7e4 | 303 | trace_f2fs_sync_file_exit(inode, need_cp, datasync, ret); |
05ca3632 | 304 | f2fs_trace_ios(NULL, 1); |
fbfa2cc5 JK |
305 | return ret; |
306 | } | |
307 | ||
608514de JK |
308 | int f2fs_sync_file(struct file *file, loff_t start, loff_t end, int datasync) |
309 | { | |
310 | return f2fs_do_sync_file(file, start, end, datasync, false); | |
311 | } | |
312 | ||
7f7670fe JK |
313 | static pgoff_t __get_first_dirty_index(struct address_space *mapping, |
314 | pgoff_t pgofs, int whence) | |
315 | { | |
316 | struct pagevec pvec; | |
317 | int nr_pages; | |
318 | ||
319 | if (whence != SEEK_DATA) | |
320 | return 0; | |
321 | ||
322 | /* find first dirty page index */ | |
323 | pagevec_init(&pvec, 0); | |
65b85ccc JK |
324 | nr_pages = pagevec_lookup_tag(&pvec, mapping, &pgofs, |
325 | PAGECACHE_TAG_DIRTY, 1); | |
80dd9c0e | 326 | pgofs = nr_pages ? pvec.pages[0]->index : ULONG_MAX; |
7f7670fe JK |
327 | pagevec_release(&pvec); |
328 | return pgofs; | |
329 | } | |
330 | ||
331 | static bool __found_offset(block_t blkaddr, pgoff_t dirty, pgoff_t pgofs, | |
332 | int whence) | |
333 | { | |
334 | switch (whence) { | |
335 | case SEEK_DATA: | |
336 | if ((blkaddr == NEW_ADDR && dirty == pgofs) || | |
337 | (blkaddr != NEW_ADDR && blkaddr != NULL_ADDR)) | |
338 | return true; | |
339 | break; | |
340 | case SEEK_HOLE: | |
341 | if (blkaddr == NULL_ADDR) | |
342 | return true; | |
343 | break; | |
344 | } | |
345 | return false; | |
346 | } | |
347 | ||
267378d4 CY |
348 | static loff_t f2fs_seek_block(struct file *file, loff_t offset, int whence) |
349 | { | |
350 | struct inode *inode = file->f_mapping->host; | |
351 | loff_t maxbytes = inode->i_sb->s_maxbytes; | |
352 | struct dnode_of_data dn; | |
7f7670fe JK |
353 | pgoff_t pgofs, end_offset, dirty; |
354 | loff_t data_ofs = offset; | |
355 | loff_t isize; | |
267378d4 CY |
356 | int err = 0; |
357 | ||
5955102c | 358 | inode_lock(inode); |
267378d4 CY |
359 | |
360 | isize = i_size_read(inode); | |
361 | if (offset >= isize) | |
362 | goto fail; | |
363 | ||
364 | /* handle inline data case */ | |
622f28ae | 365 | if (f2fs_has_inline_data(inode) || f2fs_has_inline_dentry(inode)) { |
267378d4 CY |
366 | if (whence == SEEK_HOLE) |
367 | data_ofs = isize; | |
368 | goto found; | |
369 | } | |
370 | ||
09cbfeaf | 371 | pgofs = (pgoff_t)(offset >> PAGE_SHIFT); |
267378d4 | 372 | |
7f7670fe JK |
373 | dirty = __get_first_dirty_index(inode->i_mapping, pgofs, whence); |
374 | ||
09cbfeaf | 375 | for (; data_ofs < isize; data_ofs = (loff_t)pgofs << PAGE_SHIFT) { |
267378d4 | 376 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
ac6f1999 | 377 | err = get_dnode_of_data(&dn, pgofs, LOOKUP_NODE); |
267378d4 CY |
378 | if (err && err != -ENOENT) { |
379 | goto fail; | |
380 | } else if (err == -ENOENT) { | |
e1c42045 | 381 | /* direct node does not exists */ |
267378d4 | 382 | if (whence == SEEK_DATA) { |
3cf45747 | 383 | pgofs = get_next_page_offset(&dn, pgofs); |
267378d4 CY |
384 | continue; |
385 | } else { | |
386 | goto found; | |
387 | } | |
388 | } | |
389 | ||
81ca7350 | 390 | end_offset = ADDRS_PER_PAGE(dn.node_page, inode); |
267378d4 CY |
391 | |
392 | /* find data/hole in dnode block */ | |
393 | for (; dn.ofs_in_node < end_offset; | |
394 | dn.ofs_in_node++, pgofs++, | |
09cbfeaf | 395 | data_ofs = (loff_t)pgofs << PAGE_SHIFT) { |
267378d4 | 396 | block_t blkaddr; |
7a2af766 CY |
397 | blkaddr = datablock_addr(dn.inode, |
398 | dn.node_page, dn.ofs_in_node); | |
267378d4 | 399 | |
7f7670fe | 400 | if (__found_offset(blkaddr, dirty, pgofs, whence)) { |
267378d4 CY |
401 | f2fs_put_dnode(&dn); |
402 | goto found; | |
403 | } | |
404 | } | |
405 | f2fs_put_dnode(&dn); | |
406 | } | |
407 | ||
408 | if (whence == SEEK_DATA) | |
409 | goto fail; | |
267378d4 | 410 | found: |
fe369bc8 JK |
411 | if (whence == SEEK_HOLE && data_ofs > isize) |
412 | data_ofs = isize; | |
5955102c | 413 | inode_unlock(inode); |
267378d4 CY |
414 | return vfs_setpos(file, data_ofs, maxbytes); |
415 | fail: | |
5955102c | 416 | inode_unlock(inode); |
267378d4 CY |
417 | return -ENXIO; |
418 | } | |
419 | ||
420 | static loff_t f2fs_llseek(struct file *file, loff_t offset, int whence) | |
421 | { | |
422 | struct inode *inode = file->f_mapping->host; | |
423 | loff_t maxbytes = inode->i_sb->s_maxbytes; | |
424 | ||
425 | switch (whence) { | |
426 | case SEEK_SET: | |
427 | case SEEK_CUR: | |
428 | case SEEK_END: | |
429 | return generic_file_llseek_size(file, offset, whence, | |
430 | maxbytes, i_size_read(inode)); | |
431 | case SEEK_DATA: | |
432 | case SEEK_HOLE: | |
0b4c5afd JK |
433 | if (offset < 0) |
434 | return -ENXIO; | |
267378d4 CY |
435 | return f2fs_seek_block(file, offset, whence); |
436 | } | |
437 | ||
438 | return -EINVAL; | |
439 | } | |
440 | ||
fbfa2cc5 JK |
441 | static int f2fs_file_mmap(struct file *file, struct vm_area_struct *vma) |
442 | { | |
b3d208f9 | 443 | struct inode *inode = file_inode(file); |
b9d777b8 | 444 | int err; |
b3d208f9 JK |
445 | |
446 | /* we don't need to use inline_data strictly */ | |
b9d777b8 JK |
447 | err = f2fs_convert_inline_inode(inode); |
448 | if (err) | |
449 | return err; | |
b3d208f9 | 450 | |
fbfa2cc5 JK |
451 | file_accessed(file); |
452 | vma->vm_ops = &f2fs_file_vm_ops; | |
453 | return 0; | |
454 | } | |
455 | ||
fcc85a4d JK |
456 | static int f2fs_file_open(struct inode *inode, struct file *filp) |
457 | { | |
33b13951 | 458 | struct dentry *dir; |
fcc85a4d | 459 | |
0abd675e CY |
460 | if (f2fs_encrypted_inode(inode)) { |
461 | int ret = fscrypt_get_encryption_info(inode); | |
fcc85a4d | 462 | if (ret) |
ae108668 | 463 | return -EACCES; |
0b81d077 | 464 | if (!fscrypt_has_encryption_key(inode)) |
ae108668 | 465 | return -ENOKEY; |
fcc85a4d | 466 | } |
33b13951 JK |
467 | dir = dget_parent(file_dentry(filp)); |
468 | if (f2fs_encrypted_inode(d_inode(dir)) && | |
469 | !fscrypt_has_permitted_context(d_inode(dir), inode)) { | |
470 | dput(dir); | |
8074bb51 | 471 | return -EPERM; |
33b13951 JK |
472 | } |
473 | dput(dir); | |
0abd675e | 474 | return dquot_file_open(inode, filp); |
fcc85a4d JK |
475 | } |
476 | ||
b292dcab | 477 | int truncate_data_blocks_range(struct dnode_of_data *dn, int count) |
fbfa2cc5 | 478 | { |
4081363f | 479 | struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); |
fbfa2cc5 | 480 | struct f2fs_node *raw_node; |
19b2c30d | 481 | int nr_free = 0, ofs = dn->ofs_in_node, len = count; |
fbfa2cc5 | 482 | __le32 *addr; |
7a2af766 CY |
483 | int base = 0; |
484 | ||
485 | if (IS_INODE(dn->node_page) && f2fs_has_extra_attr(dn->inode)) | |
486 | base = get_extra_isize(dn->inode); | |
fbfa2cc5 | 487 | |
45590710 | 488 | raw_node = F2FS_NODE(dn->node_page); |
7a2af766 | 489 | addr = blkaddr_in_node(raw_node) + base + ofs; |
fbfa2cc5 | 490 | |
6c311ec6 | 491 | for (; count > 0; count--, addr++, dn->ofs_in_node++) { |
fbfa2cc5 JK |
492 | block_t blkaddr = le32_to_cpu(*addr); |
493 | if (blkaddr == NULL_ADDR) | |
494 | continue; | |
495 | ||
e1509cf2 | 496 | dn->data_blkaddr = NULL_ADDR; |
216a620a | 497 | set_data_blkaddr(dn); |
fbfa2cc5 | 498 | invalidate_blocks(sbi, blkaddr); |
3c6c2beb | 499 | if (dn->ofs_in_node == 0 && IS_INODE(dn->node_page)) |
91942321 | 500 | clear_inode_flag(dn->inode, FI_FIRST_BLOCK_WRITTEN); |
fbfa2cc5 JK |
501 | nr_free++; |
502 | } | |
19b2c30d | 503 | |
fbfa2cc5 | 504 | if (nr_free) { |
19b2c30d CY |
505 | pgoff_t fofs; |
506 | /* | |
507 | * once we invalidate valid blkaddr in range [ofs, ofs + count], | |
508 | * we will invalidate all blkaddr in the whole range. | |
509 | */ | |
510 | fofs = start_bidx_of_node(ofs_of_node(dn->node_page), | |
81ca7350 | 511 | dn->inode) + ofs; |
19b2c30d | 512 | f2fs_update_extent_cache_range(dn, fofs, 0, len); |
d7cc950b | 513 | dec_valid_block_count(sbi, dn->inode, nr_free); |
fbfa2cc5 JK |
514 | } |
515 | dn->ofs_in_node = ofs; | |
51dd6249 | 516 | |
d0239e1b | 517 | f2fs_update_time(sbi, REQ_TIME); |
51dd6249 NJ |
518 | trace_f2fs_truncate_data_blocks_range(dn->inode, dn->nid, |
519 | dn->ofs_in_node, nr_free); | |
fbfa2cc5 JK |
520 | return nr_free; |
521 | } | |
522 | ||
523 | void truncate_data_blocks(struct dnode_of_data *dn) | |
524 | { | |
525 | truncate_data_blocks_range(dn, ADDRS_PER_BLOCK); | |
526 | } | |
527 | ||
0bfcfcca | 528 | static int truncate_partial_data_page(struct inode *inode, u64 from, |
43f3eae1 | 529 | bool cache_only) |
fbfa2cc5 | 530 | { |
09cbfeaf KS |
531 | unsigned offset = from & (PAGE_SIZE - 1); |
532 | pgoff_t index = from >> PAGE_SHIFT; | |
43f3eae1 | 533 | struct address_space *mapping = inode->i_mapping; |
fbfa2cc5 JK |
534 | struct page *page; |
535 | ||
43f3eae1 | 536 | if (!offset && !cache_only) |
b3d208f9 | 537 | return 0; |
fbfa2cc5 | 538 | |
43f3eae1 | 539 | if (cache_only) { |
34b5d5c2 | 540 | page = find_lock_page(mapping, index); |
43f3eae1 JK |
541 | if (page && PageUptodate(page)) |
542 | goto truncate_out; | |
543 | f2fs_put_page(page, 1); | |
b3d208f9 | 544 | return 0; |
43f3eae1 | 545 | } |
fbfa2cc5 | 546 | |
a56c7c6f | 547 | page = get_lock_data_page(inode, index, true); |
43f3eae1 | 548 | if (IS_ERR(page)) |
a78aaa2c | 549 | return PTR_ERR(page) == -ENOENT ? 0 : PTR_ERR(page); |
43f3eae1 | 550 | truncate_out: |
fec1d657 | 551 | f2fs_wait_on_page_writeback(page, DATA, true); |
09cbfeaf | 552 | zero_user(page, offset, PAGE_SIZE - offset); |
a9bcf9bc JK |
553 | |
554 | /* An encrypted inode should have a key and truncate the last page. */ | |
555 | f2fs_bug_on(F2FS_I_SB(inode), cache_only && f2fs_encrypted_inode(inode)); | |
556 | if (!cache_only) | |
0bfcfcca | 557 | set_page_dirty(page); |
fbfa2cc5 | 558 | f2fs_put_page(page, 1); |
b3d208f9 | 559 | return 0; |
fbfa2cc5 JK |
560 | } |
561 | ||
764aa3e9 | 562 | int truncate_blocks(struct inode *inode, u64 from, bool lock) |
fbfa2cc5 | 563 | { |
4081363f | 564 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
fbfa2cc5 JK |
565 | unsigned int blocksize = inode->i_sb->s_blocksize; |
566 | struct dnode_of_data dn; | |
567 | pgoff_t free_from; | |
9ffe0fb5 | 568 | int count = 0, err = 0; |
b3d208f9 | 569 | struct page *ipage; |
0bfcfcca | 570 | bool truncate_page = false; |
fbfa2cc5 | 571 | |
51dd6249 NJ |
572 | trace_f2fs_truncate_blocks_enter(inode, from); |
573 | ||
f7ef9b83 | 574 | free_from = (pgoff_t)F2FS_BYTES_TO_BLK(from + blocksize - 1); |
fbfa2cc5 | 575 | |
09210c97 CY |
576 | if (free_from >= sbi->max_file_blocks) |
577 | goto free_partial; | |
578 | ||
764aa3e9 JK |
579 | if (lock) |
580 | f2fs_lock_op(sbi); | |
9ffe0fb5 | 581 | |
b3d208f9 JK |
582 | ipage = get_node_page(sbi, inode->i_ino); |
583 | if (IS_ERR(ipage)) { | |
584 | err = PTR_ERR(ipage); | |
585 | goto out; | |
586 | } | |
587 | ||
588 | if (f2fs_has_inline_data(inode)) { | |
bd4667cb | 589 | truncate_inline_inode(inode, ipage, from); |
b3d208f9 | 590 | f2fs_put_page(ipage, 1); |
0bfcfcca | 591 | truncate_page = true; |
b3d208f9 JK |
592 | goto out; |
593 | } | |
594 | ||
595 | set_new_dnode(&dn, inode, ipage, NULL, 0); | |
79344efb | 596 | err = get_dnode_of_data(&dn, free_from, LOOKUP_NODE_RA); |
fbfa2cc5 JK |
597 | if (err) { |
598 | if (err == -ENOENT) | |
599 | goto free_next; | |
b3d208f9 | 600 | goto out; |
1ce86bf6 JK |
601 | } |
602 | ||
81ca7350 | 603 | count = ADDRS_PER_PAGE(dn.node_page, inode); |
fbfa2cc5 JK |
604 | |
605 | count -= dn.ofs_in_node; | |
9850cf4a | 606 | f2fs_bug_on(sbi, count < 0); |
39936837 | 607 | |
fbfa2cc5 JK |
608 | if (dn.ofs_in_node || IS_INODE(dn.node_page)) { |
609 | truncate_data_blocks_range(&dn, count); | |
610 | free_from += count; | |
611 | } | |
612 | ||
613 | f2fs_put_dnode(&dn); | |
614 | free_next: | |
615 | err = truncate_inode_blocks(inode, free_from); | |
764d2c80 JK |
616 | out: |
617 | if (lock) | |
618 | f2fs_unlock_op(sbi); | |
09210c97 | 619 | free_partial: |
b3d208f9 JK |
620 | /* lastly zero out the first data page */ |
621 | if (!err) | |
0bfcfcca | 622 | err = truncate_partial_data_page(inode, from, truncate_page); |
fbfa2cc5 | 623 | |
51dd6249 | 624 | trace_f2fs_truncate_blocks_exit(inode, err); |
fbfa2cc5 JK |
625 | return err; |
626 | } | |
627 | ||
9a449e9c | 628 | int f2fs_truncate(struct inode *inode) |
fbfa2cc5 | 629 | { |
b0154891 CY |
630 | int err; |
631 | ||
fbfa2cc5 JK |
632 | if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) || |
633 | S_ISLNK(inode->i_mode))) | |
b0154891 | 634 | return 0; |
fbfa2cc5 | 635 | |
51dd6249 NJ |
636 | trace_f2fs_truncate(inode); |
637 | ||
14b44d23 JK |
638 | #ifdef CONFIG_F2FS_FAULT_INJECTION |
639 | if (time_to_inject(F2FS_I_SB(inode), FAULT_TRUNCATE)) { | |
640 | f2fs_show_injection_info(FAULT_TRUNCATE); | |
641 | return -EIO; | |
642 | } | |
643 | #endif | |
92dffd01 | 644 | /* we should check inline_data size */ |
b9d777b8 | 645 | if (!f2fs_may_inline_data(inode)) { |
b0154891 CY |
646 | err = f2fs_convert_inline_inode(inode); |
647 | if (err) | |
648 | return err; | |
92dffd01 JK |
649 | } |
650 | ||
9a449e9c | 651 | err = truncate_blocks(inode, i_size_read(inode), true); |
b0154891 CY |
652 | if (err) |
653 | return err; | |
654 | ||
078cd827 | 655 | inode->i_mtime = inode->i_ctime = current_time(inode); |
7c45729a | 656 | f2fs_mark_inode_dirty_sync(inode, false); |
b0154891 | 657 | return 0; |
fbfa2cc5 JK |
658 | } |
659 | ||
a528d35e | 660 | int f2fs_getattr(const struct path *path, struct kstat *stat, |
1c6d8ee4 | 661 | u32 request_mask, unsigned int query_flags) |
fbfa2cc5 | 662 | { |
a528d35e | 663 | struct inode *inode = d_inode(path->dentry); |
1c6d8ee4 CY |
664 | struct f2fs_inode_info *fi = F2FS_I(inode); |
665 | unsigned int flags; | |
666 | ||
2c1d0305 | 667 | flags = fi->i_flags & (FS_FL_USER_VISIBLE | FS_PROJINHERIT_FL); |
1c6d8ee4 CY |
668 | if (flags & FS_APPEND_FL) |
669 | stat->attributes |= STATX_ATTR_APPEND; | |
670 | if (flags & FS_COMPR_FL) | |
671 | stat->attributes |= STATX_ATTR_COMPRESSED; | |
672 | if (f2fs_encrypted_inode(inode)) | |
673 | stat->attributes |= STATX_ATTR_ENCRYPTED; | |
674 | if (flags & FS_IMMUTABLE_FL) | |
675 | stat->attributes |= STATX_ATTR_IMMUTABLE; | |
676 | if (flags & FS_NODUMP_FL) | |
677 | stat->attributes |= STATX_ATTR_NODUMP; | |
678 | ||
679 | stat->attributes_mask |= (STATX_ATTR_APPEND | | |
680 | STATX_ATTR_COMPRESSED | | |
681 | STATX_ATTR_ENCRYPTED | | |
682 | STATX_ATTR_IMMUTABLE | | |
683 | STATX_ATTR_NODUMP); | |
684 | ||
fbfa2cc5 | 685 | generic_fillattr(inode, stat); |
fbfa2cc5 JK |
686 | return 0; |
687 | } | |
688 | ||
689 | #ifdef CONFIG_F2FS_FS_POSIX_ACL | |
690 | static void __setattr_copy(struct inode *inode, const struct iattr *attr) | |
691 | { | |
fbfa2cc5 JK |
692 | unsigned int ia_valid = attr->ia_valid; |
693 | ||
694 | if (ia_valid & ATTR_UID) | |
695 | inode->i_uid = attr->ia_uid; | |
696 | if (ia_valid & ATTR_GID) | |
697 | inode->i_gid = attr->ia_gid; | |
698 | if (ia_valid & ATTR_ATIME) | |
699 | inode->i_atime = timespec_trunc(attr->ia_atime, | |
700 | inode->i_sb->s_time_gran); | |
701 | if (ia_valid & ATTR_MTIME) | |
702 | inode->i_mtime = timespec_trunc(attr->ia_mtime, | |
703 | inode->i_sb->s_time_gran); | |
704 | if (ia_valid & ATTR_CTIME) | |
705 | inode->i_ctime = timespec_trunc(attr->ia_ctime, | |
706 | inode->i_sb->s_time_gran); | |
707 | if (ia_valid & ATTR_MODE) { | |
708 | umode_t mode = attr->ia_mode; | |
709 | ||
710 | if (!in_group_p(inode->i_gid) && !capable(CAP_FSETID)) | |
711 | mode &= ~S_ISGID; | |
91942321 | 712 | set_acl_inode(inode, mode); |
fbfa2cc5 JK |
713 | } |
714 | } | |
715 | #else | |
716 | #define __setattr_copy setattr_copy | |
717 | #endif | |
718 | ||
719 | int f2fs_setattr(struct dentry *dentry, struct iattr *attr) | |
720 | { | |
2b0143b5 | 721 | struct inode *inode = d_inode(dentry); |
fbfa2cc5 | 722 | int err; |
c0ed4405 | 723 | bool size_changed = false; |
fbfa2cc5 | 724 | |
31051c85 | 725 | err = setattr_prepare(dentry, attr); |
fbfa2cc5 JK |
726 | if (err) |
727 | return err; | |
728 | ||
0abd675e CY |
729 | if (is_quota_modification(inode, attr)) { |
730 | err = dquot_initialize(inode); | |
731 | if (err) | |
732 | return err; | |
733 | } | |
734 | if ((attr->ia_valid & ATTR_UID && | |
735 | !uid_eq(attr->ia_uid, inode->i_uid)) || | |
736 | (attr->ia_valid & ATTR_GID && | |
737 | !gid_eq(attr->ia_gid, inode->i_gid))) { | |
738 | err = dquot_transfer(inode, attr); | |
739 | if (err) | |
740 | return err; | |
741 | } | |
742 | ||
09db6a2e | 743 | if (attr->ia_valid & ATTR_SIZE) { |
67773a1f EB |
744 | if (f2fs_encrypted_inode(inode)) { |
745 | err = fscrypt_get_encryption_info(inode); | |
746 | if (err) | |
747 | return err; | |
748 | if (!fscrypt_has_encryption_key(inode)) | |
749 | return -ENOKEY; | |
750 | } | |
fcc85a4d | 751 | |
3c454145 | 752 | if (attr->ia_size <= i_size_read(inode)) { |
5a3a2d83 | 753 | down_write(&F2FS_I(inode)->i_mmap_sem); |
09db6a2e | 754 | truncate_setsize(inode, attr->ia_size); |
9a449e9c | 755 | err = f2fs_truncate(inode); |
5a3a2d83 | 756 | up_write(&F2FS_I(inode)->i_mmap_sem); |
b0154891 CY |
757 | if (err) |
758 | return err; | |
09db6a2e CY |
759 | } else { |
760 | /* | |
3c454145 CY |
761 | * do not trim all blocks after i_size if target size is |
762 | * larger than i_size. | |
09db6a2e | 763 | */ |
5a3a2d83 | 764 | down_write(&F2FS_I(inode)->i_mmap_sem); |
3c454145 | 765 | truncate_setsize(inode, attr->ia_size); |
5a3a2d83 | 766 | up_write(&F2FS_I(inode)->i_mmap_sem); |
0cab80ee CY |
767 | |
768 | /* should convert inline inode here */ | |
b9d777b8 | 769 | if (!f2fs_may_inline_data(inode)) { |
0cab80ee CY |
770 | err = f2fs_convert_inline_inode(inode); |
771 | if (err) | |
772 | return err; | |
773 | } | |
078cd827 | 774 | inode->i_mtime = inode->i_ctime = current_time(inode); |
09db6a2e | 775 | } |
c0ed4405 YH |
776 | |
777 | size_changed = true; | |
fbfa2cc5 JK |
778 | } |
779 | ||
780 | __setattr_copy(inode, attr); | |
781 | ||
782 | if (attr->ia_valid & ATTR_MODE) { | |
a6dda0e6 | 783 | err = posix_acl_chmod(inode, get_inode_mode(inode)); |
91942321 JK |
784 | if (err || is_inode_flag_set(inode, FI_ACL_MODE)) { |
785 | inode->i_mode = F2FS_I(inode)->i_acl_mode; | |
786 | clear_inode_flag(inode, FI_ACL_MODE); | |
fbfa2cc5 JK |
787 | } |
788 | } | |
789 | ||
c0ed4405 YH |
790 | /* file size may changed here */ |
791 | f2fs_mark_inode_dirty_sync(inode, size_changed); | |
15d04354 JK |
792 | |
793 | /* inode change will produce dirty node pages flushed by checkpoint */ | |
794 | f2fs_balance_fs(F2FS_I_SB(inode), true); | |
795 | ||
fbfa2cc5 JK |
796 | return err; |
797 | } | |
798 | ||
799 | const struct inode_operations f2fs_file_inode_operations = { | |
800 | .getattr = f2fs_getattr, | |
801 | .setattr = f2fs_setattr, | |
802 | .get_acl = f2fs_get_acl, | |
a6dda0e6 | 803 | .set_acl = f2fs_set_acl, |
fbfa2cc5 | 804 | #ifdef CONFIG_F2FS_FS_XATTR |
fbfa2cc5 | 805 | .listxattr = f2fs_listxattr, |
fbfa2cc5 | 806 | #endif |
9ab70134 | 807 | .fiemap = f2fs_fiemap, |
fbfa2cc5 JK |
808 | }; |
809 | ||
6394328a | 810 | static int fill_zero(struct inode *inode, pgoff_t index, |
fbfa2cc5 JK |
811 | loff_t start, loff_t len) |
812 | { | |
4081363f | 813 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
fbfa2cc5 JK |
814 | struct page *page; |
815 | ||
816 | if (!len) | |
6394328a | 817 | return 0; |
fbfa2cc5 | 818 | |
2c4db1a6 | 819 | f2fs_balance_fs(sbi, true); |
bd43df02 | 820 | |
e479556b | 821 | f2fs_lock_op(sbi); |
64aa7ed9 | 822 | page = get_new_data_page(inode, NULL, index, false); |
e479556b | 823 | f2fs_unlock_op(sbi); |
fbfa2cc5 | 824 | |
6394328a CY |
825 | if (IS_ERR(page)) |
826 | return PTR_ERR(page); | |
827 | ||
fec1d657 | 828 | f2fs_wait_on_page_writeback(page, DATA, true); |
6394328a CY |
829 | zero_user(page, start, len); |
830 | set_page_dirty(page); | |
831 | f2fs_put_page(page, 1); | |
832 | return 0; | |
fbfa2cc5 JK |
833 | } |
834 | ||
835 | int truncate_hole(struct inode *inode, pgoff_t pg_start, pgoff_t pg_end) | |
836 | { | |
fbfa2cc5 JK |
837 | int err; |
838 | ||
ea58711e | 839 | while (pg_start < pg_end) { |
fbfa2cc5 | 840 | struct dnode_of_data dn; |
ea58711e | 841 | pgoff_t end_offset, count; |
9eaeba70 | 842 | |
fbfa2cc5 | 843 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
ea58711e | 844 | err = get_dnode_of_data(&dn, pg_start, LOOKUP_NODE); |
fbfa2cc5 | 845 | if (err) { |
ea58711e CY |
846 | if (err == -ENOENT) { |
847 | pg_start++; | |
fbfa2cc5 | 848 | continue; |
ea58711e | 849 | } |
fbfa2cc5 JK |
850 | return err; |
851 | } | |
852 | ||
81ca7350 | 853 | end_offset = ADDRS_PER_PAGE(dn.node_page, inode); |
ea58711e CY |
854 | count = min(end_offset - dn.ofs_in_node, pg_end - pg_start); |
855 | ||
856 | f2fs_bug_on(F2FS_I_SB(inode), count == 0 || count > end_offset); | |
857 | ||
858 | truncate_data_blocks_range(&dn, count); | |
fbfa2cc5 | 859 | f2fs_put_dnode(&dn); |
ea58711e CY |
860 | |
861 | pg_start += count; | |
fbfa2cc5 JK |
862 | } |
863 | return 0; | |
864 | } | |
865 | ||
a66c7b2f | 866 | static int punch_hole(struct inode *inode, loff_t offset, loff_t len) |
fbfa2cc5 JK |
867 | { |
868 | pgoff_t pg_start, pg_end; | |
869 | loff_t off_start, off_end; | |
b9d777b8 | 870 | int ret; |
fbfa2cc5 | 871 | |
b9d777b8 JK |
872 | ret = f2fs_convert_inline_inode(inode); |
873 | if (ret) | |
874 | return ret; | |
9ffe0fb5 | 875 | |
09cbfeaf KS |
876 | pg_start = ((unsigned long long) offset) >> PAGE_SHIFT; |
877 | pg_end = ((unsigned long long) offset + len) >> PAGE_SHIFT; | |
fbfa2cc5 | 878 | |
09cbfeaf KS |
879 | off_start = offset & (PAGE_SIZE - 1); |
880 | off_end = (offset + len) & (PAGE_SIZE - 1); | |
fbfa2cc5 JK |
881 | |
882 | if (pg_start == pg_end) { | |
6394328a | 883 | ret = fill_zero(inode, pg_start, off_start, |
fbfa2cc5 | 884 | off_end - off_start); |
6394328a CY |
885 | if (ret) |
886 | return ret; | |
fbfa2cc5 | 887 | } else { |
6394328a CY |
888 | if (off_start) { |
889 | ret = fill_zero(inode, pg_start++, off_start, | |
09cbfeaf | 890 | PAGE_SIZE - off_start); |
6394328a CY |
891 | if (ret) |
892 | return ret; | |
893 | } | |
894 | if (off_end) { | |
895 | ret = fill_zero(inode, pg_end, 0, off_end); | |
896 | if (ret) | |
897 | return ret; | |
898 | } | |
fbfa2cc5 JK |
899 | |
900 | if (pg_start < pg_end) { | |
901 | struct address_space *mapping = inode->i_mapping; | |
902 | loff_t blk_start, blk_end; | |
4081363f | 903 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
1127a3d4 | 904 | |
2c4db1a6 | 905 | f2fs_balance_fs(sbi, true); |
fbfa2cc5 | 906 | |
09cbfeaf KS |
907 | blk_start = (loff_t)pg_start << PAGE_SHIFT; |
908 | blk_end = (loff_t)pg_end << PAGE_SHIFT; | |
5a3a2d83 | 909 | down_write(&F2FS_I(inode)->i_mmap_sem); |
fbfa2cc5 JK |
910 | truncate_inode_pages_range(mapping, blk_start, |
911 | blk_end - 1); | |
39936837 | 912 | |
e479556b | 913 | f2fs_lock_op(sbi); |
fbfa2cc5 | 914 | ret = truncate_hole(inode, pg_start, pg_end); |
e479556b | 915 | f2fs_unlock_op(sbi); |
5a3a2d83 | 916 | up_write(&F2FS_I(inode)->i_mmap_sem); |
fbfa2cc5 JK |
917 | } |
918 | } | |
919 | ||
fbfa2cc5 JK |
920 | return ret; |
921 | } | |
922 | ||
0a2aa8fb JK |
923 | static int __read_out_blkaddrs(struct inode *inode, block_t *blkaddr, |
924 | int *do_replace, pgoff_t off, pgoff_t len) | |
b4ace337 CY |
925 | { |
926 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
927 | struct dnode_of_data dn; | |
0a2aa8fb | 928 | int ret, done, i; |
ecbaa406 | 929 | |
0a2aa8fb | 930 | next_dnode: |
6e2c64ad | 931 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
0a2aa8fb | 932 | ret = get_dnode_of_data(&dn, off, LOOKUP_NODE_RA); |
6e2c64ad JK |
933 | if (ret && ret != -ENOENT) { |
934 | return ret; | |
935 | } else if (ret == -ENOENT) { | |
0a2aa8fb JK |
936 | if (dn.max_level == 0) |
937 | return -ENOENT; | |
938 | done = min((pgoff_t)ADDRS_PER_BLOCK - dn.ofs_in_node, len); | |
939 | blkaddr += done; | |
940 | do_replace += done; | |
941 | goto next; | |
942 | } | |
943 | ||
944 | done = min((pgoff_t)ADDRS_PER_PAGE(dn.node_page, inode) - | |
945 | dn.ofs_in_node, len); | |
946 | for (i = 0; i < done; i++, blkaddr++, do_replace++, dn.ofs_in_node++) { | |
7a2af766 CY |
947 | *blkaddr = datablock_addr(dn.inode, |
948 | dn.node_page, dn.ofs_in_node); | |
0a2aa8fb JK |
949 | if (!is_checkpointed_data(sbi, *blkaddr)) { |
950 | ||
951 | if (test_opt(sbi, LFS)) { | |
952 | f2fs_put_dnode(&dn); | |
953 | return -ENOTSUPP; | |
954 | } | |
955 | ||
6e2c64ad | 956 | /* do not invalidate this block address */ |
f28b3434 | 957 | f2fs_update_data_blkaddr(&dn, NULL_ADDR); |
0a2aa8fb | 958 | *do_replace = 1; |
b4ace337 | 959 | } |
6e2c64ad | 960 | } |
0a2aa8fb JK |
961 | f2fs_put_dnode(&dn); |
962 | next: | |
963 | len -= done; | |
964 | off += done; | |
965 | if (len) | |
966 | goto next_dnode; | |
967 | return 0; | |
968 | } | |
b4ace337 | 969 | |
0a2aa8fb JK |
970 | static int __roll_back_blkaddrs(struct inode *inode, block_t *blkaddr, |
971 | int *do_replace, pgoff_t off, int len) | |
972 | { | |
973 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
974 | struct dnode_of_data dn; | |
975 | int ret, i; | |
b4ace337 | 976 | |
0a2aa8fb JK |
977 | for (i = 0; i < len; i++, do_replace++, blkaddr++) { |
978 | if (*do_replace == 0) | |
979 | continue; | |
b4ace337 | 980 | |
0a2aa8fb JK |
981 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
982 | ret = get_dnode_of_data(&dn, off + i, LOOKUP_NODE_RA); | |
983 | if (ret) { | |
984 | dec_valid_block_count(sbi, inode, 1); | |
985 | invalidate_blocks(sbi, *blkaddr); | |
986 | } else { | |
987 | f2fs_update_data_blkaddr(&dn, *blkaddr); | |
36abef4e | 988 | } |
0a2aa8fb JK |
989 | f2fs_put_dnode(&dn); |
990 | } | |
991 | return 0; | |
992 | } | |
993 | ||
994 | static int __clone_blkaddrs(struct inode *src_inode, struct inode *dst_inode, | |
995 | block_t *blkaddr, int *do_replace, | |
996 | pgoff_t src, pgoff_t dst, pgoff_t len, bool full) | |
997 | { | |
998 | struct f2fs_sb_info *sbi = F2FS_I_SB(src_inode); | |
999 | pgoff_t i = 0; | |
1000 | int ret; | |
36abef4e | 1001 | |
0a2aa8fb JK |
1002 | while (i < len) { |
1003 | if (blkaddr[i] == NULL_ADDR && !full) { | |
1004 | i++; | |
1005 | continue; | |
6e2c64ad | 1006 | } |
b4ace337 | 1007 | |
0a2aa8fb JK |
1008 | if (do_replace[i] || blkaddr[i] == NULL_ADDR) { |
1009 | struct dnode_of_data dn; | |
1010 | struct node_info ni; | |
1011 | size_t new_size; | |
1012 | pgoff_t ilen; | |
b4ace337 | 1013 | |
0a2aa8fb JK |
1014 | set_new_dnode(&dn, dst_inode, NULL, NULL, 0); |
1015 | ret = get_dnode_of_data(&dn, dst + i, ALLOC_NODE); | |
1016 | if (ret) | |
1017 | return ret; | |
b4ace337 | 1018 | |
0a2aa8fb JK |
1019 | get_node_info(sbi, dn.nid, &ni); |
1020 | ilen = min((pgoff_t) | |
1021 | ADDRS_PER_PAGE(dn.node_page, dst_inode) - | |
1022 | dn.ofs_in_node, len - i); | |
1023 | do { | |
7a2af766 CY |
1024 | dn.data_blkaddr = datablock_addr(dn.inode, |
1025 | dn.node_page, dn.ofs_in_node); | |
0a2aa8fb JK |
1026 | truncate_data_blocks_range(&dn, 1); |
1027 | ||
1028 | if (do_replace[i]) { | |
1029 | f2fs_i_blocks_write(src_inode, | |
0abd675e | 1030 | 1, false, false); |
0a2aa8fb | 1031 | f2fs_i_blocks_write(dst_inode, |
0abd675e | 1032 | 1, true, false); |
0a2aa8fb JK |
1033 | f2fs_replace_block(sbi, &dn, dn.data_blkaddr, |
1034 | blkaddr[i], ni.version, true, false); | |
1035 | ||
1036 | do_replace[i] = 0; | |
1037 | } | |
1038 | dn.ofs_in_node++; | |
1039 | i++; | |
1040 | new_size = (dst + i) << PAGE_SHIFT; | |
1041 | if (dst_inode->i_size < new_size) | |
1042 | f2fs_i_size_write(dst_inode, new_size); | |
e87f7329 | 1043 | } while (--ilen && (do_replace[i] || blkaddr[i] == NULL_ADDR)); |
6e2c64ad | 1044 | |
0a2aa8fb JK |
1045 | f2fs_put_dnode(&dn); |
1046 | } else { | |
1047 | struct page *psrc, *pdst; | |
1048 | ||
1049 | psrc = get_lock_data_page(src_inode, src + i, true); | |
1050 | if (IS_ERR(psrc)) | |
1051 | return PTR_ERR(psrc); | |
1052 | pdst = get_new_data_page(dst_inode, NULL, dst + i, | |
1053 | true); | |
1054 | if (IS_ERR(pdst)) { | |
1055 | f2fs_put_page(psrc, 1); | |
1056 | return PTR_ERR(pdst); | |
1057 | } | |
1058 | f2fs_copy_page(psrc, pdst); | |
1059 | set_page_dirty(pdst); | |
1060 | f2fs_put_page(pdst, 1); | |
6e2c64ad | 1061 | f2fs_put_page(psrc, 1); |
b4ace337 | 1062 | |
0a2aa8fb JK |
1063 | ret = truncate_hole(src_inode, src + i, src + i + 1); |
1064 | if (ret) | |
1065 | return ret; | |
1066 | i++; | |
1067 | } | |
6e2c64ad JK |
1068 | } |
1069 | return 0; | |
0a2aa8fb | 1070 | } |
b4ace337 | 1071 | |
0a2aa8fb JK |
1072 | static int __exchange_data_block(struct inode *src_inode, |
1073 | struct inode *dst_inode, pgoff_t src, pgoff_t dst, | |
363cad7f | 1074 | pgoff_t len, bool full) |
0a2aa8fb JK |
1075 | { |
1076 | block_t *src_blkaddr; | |
1077 | int *do_replace; | |
363cad7f | 1078 | pgoff_t olen; |
0a2aa8fb JK |
1079 | int ret; |
1080 | ||
363cad7f JK |
1081 | while (len) { |
1082 | olen = min((pgoff_t)4 * ADDRS_PER_BLOCK, len); | |
0a2aa8fb | 1083 | |
a7c3e901 | 1084 | src_blkaddr = kvzalloc(sizeof(block_t) * olen, GFP_KERNEL); |
363cad7f JK |
1085 | if (!src_blkaddr) |
1086 | return -ENOMEM; | |
0a2aa8fb | 1087 | |
a7c3e901 | 1088 | do_replace = kvzalloc(sizeof(int) * olen, GFP_KERNEL); |
363cad7f JK |
1089 | if (!do_replace) { |
1090 | kvfree(src_blkaddr); | |
1091 | return -ENOMEM; | |
1092 | } | |
0a2aa8fb | 1093 | |
363cad7f JK |
1094 | ret = __read_out_blkaddrs(src_inode, src_blkaddr, |
1095 | do_replace, src, olen); | |
1096 | if (ret) | |
1097 | goto roll_back; | |
0a2aa8fb | 1098 | |
363cad7f JK |
1099 | ret = __clone_blkaddrs(src_inode, dst_inode, src_blkaddr, |
1100 | do_replace, src, dst, olen, full); | |
1101 | if (ret) | |
1102 | goto roll_back; | |
1103 | ||
1104 | src += olen; | |
1105 | dst += olen; | |
1106 | len -= olen; | |
1107 | ||
1108 | kvfree(src_blkaddr); | |
1109 | kvfree(do_replace); | |
1110 | } | |
0a2aa8fb JK |
1111 | return 0; |
1112 | ||
1113 | roll_back: | |
1114 | __roll_back_blkaddrs(src_inode, src_blkaddr, do_replace, src, len); | |
1115 | kvfree(src_blkaddr); | |
1116 | kvfree(do_replace); | |
6e2c64ad JK |
1117 | return ret; |
1118 | } | |
b4ace337 | 1119 | |
6e2c64ad JK |
1120 | static int f2fs_do_collapse(struct inode *inode, pgoff_t start, pgoff_t end) |
1121 | { | |
1122 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
1123 | pgoff_t nrpages = (i_size_read(inode) + PAGE_SIZE - 1) / PAGE_SIZE; | |
0a2aa8fb | 1124 | int ret; |
6e2c64ad | 1125 | |
0a2aa8fb JK |
1126 | f2fs_balance_fs(sbi, true); |
1127 | f2fs_lock_op(sbi); | |
5f281fab JK |
1128 | |
1129 | f2fs_drop_extent_tree(inode); | |
1130 | ||
0a2aa8fb JK |
1131 | ret = __exchange_data_block(inode, inode, end, start, nrpages - end, true); |
1132 | f2fs_unlock_op(sbi); | |
b4ace337 CY |
1133 | return ret; |
1134 | } | |
1135 | ||
1136 | static int f2fs_collapse_range(struct inode *inode, loff_t offset, loff_t len) | |
1137 | { | |
1138 | pgoff_t pg_start, pg_end; | |
1139 | loff_t new_size; | |
1140 | int ret; | |
1141 | ||
b4ace337 CY |
1142 | if (offset + len >= i_size_read(inode)) |
1143 | return -EINVAL; | |
1144 | ||
1145 | /* collapse range should be aligned to block size of f2fs. */ | |
1146 | if (offset & (F2FS_BLKSIZE - 1) || len & (F2FS_BLKSIZE - 1)) | |
1147 | return -EINVAL; | |
1148 | ||
b9d777b8 JK |
1149 | ret = f2fs_convert_inline_inode(inode); |
1150 | if (ret) | |
1151 | return ret; | |
97a7b2c2 | 1152 | |
09cbfeaf KS |
1153 | pg_start = offset >> PAGE_SHIFT; |
1154 | pg_end = (offset + len) >> PAGE_SHIFT; | |
b4ace337 | 1155 | |
5a3a2d83 | 1156 | down_write(&F2FS_I(inode)->i_mmap_sem); |
b4ace337 CY |
1157 | /* write out all dirty pages from offset */ |
1158 | ret = filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX); | |
1159 | if (ret) | |
5a3a2d83 | 1160 | goto out; |
b4ace337 CY |
1161 | |
1162 | truncate_pagecache(inode, offset); | |
1163 | ||
1164 | ret = f2fs_do_collapse(inode, pg_start, pg_end); | |
1165 | if (ret) | |
5a3a2d83 | 1166 | goto out; |
b4ace337 | 1167 | |
6e2c64ad JK |
1168 | /* write out all moved pages, if possible */ |
1169 | filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX); | |
1170 | truncate_pagecache(inode, offset); | |
1171 | ||
b4ace337 | 1172 | new_size = i_size_read(inode) - len; |
6e2c64ad | 1173 | truncate_pagecache(inode, new_size); |
b4ace337 CY |
1174 | |
1175 | ret = truncate_blocks(inode, new_size, true); | |
1176 | if (!ret) | |
fc9581c8 | 1177 | f2fs_i_size_write(inode, new_size); |
b4ace337 | 1178 | |
5a3a2d83 QS |
1179 | out: |
1180 | up_write(&F2FS_I(inode)->i_mmap_sem); | |
b4ace337 CY |
1181 | return ret; |
1182 | } | |
1183 | ||
6e961949 CY |
1184 | static int f2fs_do_zero_range(struct dnode_of_data *dn, pgoff_t start, |
1185 | pgoff_t end) | |
1186 | { | |
1187 | struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); | |
1188 | pgoff_t index = start; | |
1189 | unsigned int ofs_in_node = dn->ofs_in_node; | |
1190 | blkcnt_t count = 0; | |
1191 | int ret; | |
1192 | ||
1193 | for (; index < end; index++, dn->ofs_in_node++) { | |
7a2af766 CY |
1194 | if (datablock_addr(dn->inode, dn->node_page, |
1195 | dn->ofs_in_node) == NULL_ADDR) | |
6e961949 CY |
1196 | count++; |
1197 | } | |
1198 | ||
1199 | dn->ofs_in_node = ofs_in_node; | |
1200 | ret = reserve_new_blocks(dn, count); | |
1201 | if (ret) | |
1202 | return ret; | |
1203 | ||
1204 | dn->ofs_in_node = ofs_in_node; | |
1205 | for (index = start; index < end; index++, dn->ofs_in_node++) { | |
7a2af766 CY |
1206 | dn->data_blkaddr = datablock_addr(dn->inode, |
1207 | dn->node_page, dn->ofs_in_node); | |
6e961949 CY |
1208 | /* |
1209 | * reserve_new_blocks will not guarantee entire block | |
1210 | * allocation. | |
1211 | */ | |
1212 | if (dn->data_blkaddr == NULL_ADDR) { | |
1213 | ret = -ENOSPC; | |
1214 | break; | |
1215 | } | |
1216 | if (dn->data_blkaddr != NEW_ADDR) { | |
1217 | invalidate_blocks(sbi, dn->data_blkaddr); | |
1218 | dn->data_blkaddr = NEW_ADDR; | |
1219 | set_data_blkaddr(dn); | |
1220 | } | |
1221 | } | |
1222 | ||
1223 | f2fs_update_extent_cache_range(dn, start, 0, index - start); | |
1224 | ||
1225 | return ret; | |
1226 | } | |
1227 | ||
75cd4e09 CY |
1228 | static int f2fs_zero_range(struct inode *inode, loff_t offset, loff_t len, |
1229 | int mode) | |
1230 | { | |
1231 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
1232 | struct address_space *mapping = inode->i_mapping; | |
1233 | pgoff_t index, pg_start, pg_end; | |
1234 | loff_t new_size = i_size_read(inode); | |
1235 | loff_t off_start, off_end; | |
1236 | int ret = 0; | |
1237 | ||
75cd4e09 CY |
1238 | ret = inode_newsize_ok(inode, (len + offset)); |
1239 | if (ret) | |
1240 | return ret; | |
1241 | ||
b9d777b8 JK |
1242 | ret = f2fs_convert_inline_inode(inode); |
1243 | if (ret) | |
1244 | return ret; | |
75cd4e09 | 1245 | |
5a3a2d83 | 1246 | down_write(&F2FS_I(inode)->i_mmap_sem); |
75cd4e09 CY |
1247 | ret = filemap_write_and_wait_range(mapping, offset, offset + len - 1); |
1248 | if (ret) | |
5a3a2d83 | 1249 | goto out_sem; |
75cd4e09 CY |
1250 | |
1251 | truncate_pagecache_range(inode, offset, offset + len - 1); | |
1252 | ||
09cbfeaf KS |
1253 | pg_start = ((unsigned long long) offset) >> PAGE_SHIFT; |
1254 | pg_end = ((unsigned long long) offset + len) >> PAGE_SHIFT; | |
75cd4e09 | 1255 | |
09cbfeaf KS |
1256 | off_start = offset & (PAGE_SIZE - 1); |
1257 | off_end = (offset + len) & (PAGE_SIZE - 1); | |
75cd4e09 CY |
1258 | |
1259 | if (pg_start == pg_end) { | |
6394328a CY |
1260 | ret = fill_zero(inode, pg_start, off_start, |
1261 | off_end - off_start); | |
1262 | if (ret) | |
5a3a2d83 | 1263 | goto out_sem; |
6394328a | 1264 | |
75cd4e09 CY |
1265 | new_size = max_t(loff_t, new_size, offset + len); |
1266 | } else { | |
1267 | if (off_start) { | |
6394328a | 1268 | ret = fill_zero(inode, pg_start++, off_start, |
09cbfeaf | 1269 | PAGE_SIZE - off_start); |
6394328a | 1270 | if (ret) |
5a3a2d83 | 1271 | goto out_sem; |
6394328a | 1272 | |
75cd4e09 | 1273 | new_size = max_t(loff_t, new_size, |
09cbfeaf | 1274 | (loff_t)pg_start << PAGE_SHIFT); |
75cd4e09 CY |
1275 | } |
1276 | ||
6e961949 | 1277 | for (index = pg_start; index < pg_end;) { |
75cd4e09 | 1278 | struct dnode_of_data dn; |
6e961949 CY |
1279 | unsigned int end_offset; |
1280 | pgoff_t end; | |
75cd4e09 CY |
1281 | |
1282 | f2fs_lock_op(sbi); | |
1283 | ||
6e961949 CY |
1284 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
1285 | ret = get_dnode_of_data(&dn, index, ALLOC_NODE); | |
75cd4e09 CY |
1286 | if (ret) { |
1287 | f2fs_unlock_op(sbi); | |
1288 | goto out; | |
1289 | } | |
1290 | ||
6e961949 CY |
1291 | end_offset = ADDRS_PER_PAGE(dn.node_page, inode); |
1292 | end = min(pg_end, end_offset - dn.ofs_in_node + index); | |
1293 | ||
1294 | ret = f2fs_do_zero_range(&dn, index, end); | |
75cd4e09 CY |
1295 | f2fs_put_dnode(&dn); |
1296 | f2fs_unlock_op(sbi); | |
9434fcde CY |
1297 | |
1298 | f2fs_balance_fs(sbi, dn.node_changed); | |
1299 | ||
6e961949 CY |
1300 | if (ret) |
1301 | goto out; | |
75cd4e09 | 1302 | |
6e961949 | 1303 | index = end; |
75cd4e09 | 1304 | new_size = max_t(loff_t, new_size, |
6e961949 | 1305 | (loff_t)index << PAGE_SHIFT); |
75cd4e09 CY |
1306 | } |
1307 | ||
1308 | if (off_end) { | |
6394328a CY |
1309 | ret = fill_zero(inode, pg_end, 0, off_end); |
1310 | if (ret) | |
1311 | goto out; | |
1312 | ||
75cd4e09 CY |
1313 | new_size = max_t(loff_t, new_size, offset + len); |
1314 | } | |
1315 | } | |
1316 | ||
1317 | out: | |
ee6d182f | 1318 | if (!(mode & FALLOC_FL_KEEP_SIZE) && i_size_read(inode) < new_size) |
fc9581c8 | 1319 | f2fs_i_size_write(inode, new_size); |
5a3a2d83 QS |
1320 | out_sem: |
1321 | up_write(&F2FS_I(inode)->i_mmap_sem); | |
75cd4e09 CY |
1322 | |
1323 | return ret; | |
1324 | } | |
1325 | ||
f62185d0 CY |
1326 | static int f2fs_insert_range(struct inode *inode, loff_t offset, loff_t len) |
1327 | { | |
1328 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
0a2aa8fb | 1329 | pgoff_t nr, pg_start, pg_end, delta, idx; |
f62185d0 | 1330 | loff_t new_size; |
6e2c64ad | 1331 | int ret = 0; |
f62185d0 | 1332 | |
f62185d0 | 1333 | new_size = i_size_read(inode) + len; |
46e82fb1 KM |
1334 | ret = inode_newsize_ok(inode, new_size); |
1335 | if (ret) | |
1336 | return ret; | |
f62185d0 CY |
1337 | |
1338 | if (offset >= i_size_read(inode)) | |
1339 | return -EINVAL; | |
1340 | ||
1341 | /* insert range should be aligned to block size of f2fs. */ | |
1342 | if (offset & (F2FS_BLKSIZE - 1) || len & (F2FS_BLKSIZE - 1)) | |
1343 | return -EINVAL; | |
1344 | ||
b9d777b8 JK |
1345 | ret = f2fs_convert_inline_inode(inode); |
1346 | if (ret) | |
1347 | return ret; | |
97a7b2c2 | 1348 | |
2c4db1a6 | 1349 | f2fs_balance_fs(sbi, true); |
2a340760 | 1350 | |
5a3a2d83 | 1351 | down_write(&F2FS_I(inode)->i_mmap_sem); |
f62185d0 CY |
1352 | ret = truncate_blocks(inode, i_size_read(inode), true); |
1353 | if (ret) | |
5a3a2d83 | 1354 | goto out; |
f62185d0 CY |
1355 | |
1356 | /* write out all dirty pages from offset */ | |
1357 | ret = filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX); | |
1358 | if (ret) | |
5a3a2d83 | 1359 | goto out; |
f62185d0 CY |
1360 | |
1361 | truncate_pagecache(inode, offset); | |
1362 | ||
09cbfeaf KS |
1363 | pg_start = offset >> PAGE_SHIFT; |
1364 | pg_end = (offset + len) >> PAGE_SHIFT; | |
f62185d0 | 1365 | delta = pg_end - pg_start; |
0a2aa8fb JK |
1366 | idx = (i_size_read(inode) + PAGE_SIZE - 1) / PAGE_SIZE; |
1367 | ||
1368 | while (!ret && idx > pg_start) { | |
1369 | nr = idx - pg_start; | |
1370 | if (nr > delta) | |
1371 | nr = delta; | |
1372 | idx -= nr; | |
f62185d0 | 1373 | |
f62185d0 | 1374 | f2fs_lock_op(sbi); |
5f281fab JK |
1375 | f2fs_drop_extent_tree(inode); |
1376 | ||
0a2aa8fb JK |
1377 | ret = __exchange_data_block(inode, inode, idx, |
1378 | idx + delta, nr, false); | |
f62185d0 CY |
1379 | f2fs_unlock_op(sbi); |
1380 | } | |
1381 | ||
6e2c64ad JK |
1382 | /* write out all moved pages, if possible */ |
1383 | filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX); | |
1384 | truncate_pagecache(inode, offset); | |
1385 | ||
1386 | if (!ret) | |
fc9581c8 | 1387 | f2fs_i_size_write(inode, new_size); |
5a3a2d83 QS |
1388 | out: |
1389 | up_write(&F2FS_I(inode)->i_mmap_sem); | |
f62185d0 CY |
1390 | return ret; |
1391 | } | |
1392 | ||
fbfa2cc5 JK |
1393 | static int expand_inode_data(struct inode *inode, loff_t offset, |
1394 | loff_t len, int mode) | |
1395 | { | |
4081363f | 1396 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
e12dd7bd JK |
1397 | struct f2fs_map_blocks map = { .m_next_pgofs = NULL }; |
1398 | pgoff_t pg_end; | |
fbfa2cc5 | 1399 | loff_t new_size = i_size_read(inode); |
e12dd7bd | 1400 | loff_t off_end; |
a7de6086 | 1401 | int err; |
fbfa2cc5 | 1402 | |
a7de6086 JK |
1403 | err = inode_newsize_ok(inode, (len + offset)); |
1404 | if (err) | |
1405 | return err; | |
fbfa2cc5 | 1406 | |
a7de6086 JK |
1407 | err = f2fs_convert_inline_inode(inode); |
1408 | if (err) | |
1409 | return err; | |
9e09fc85 | 1410 | |
2c4db1a6 | 1411 | f2fs_balance_fs(sbi, true); |
2a340760 | 1412 | |
e12dd7bd | 1413 | pg_end = ((unsigned long long)offset + len) >> PAGE_SHIFT; |
09cbfeaf | 1414 | off_end = (offset + len) & (PAGE_SIZE - 1); |
fbfa2cc5 | 1415 | |
e12dd7bd JK |
1416 | map.m_lblk = ((unsigned long long)offset) >> PAGE_SHIFT; |
1417 | map.m_len = pg_end - map.m_lblk; | |
1418 | if (off_end) | |
1419 | map.m_len++; | |
ead43275 | 1420 | |
a7de6086 JK |
1421 | err = f2fs_map_blocks(inode, &map, 1, F2FS_GET_BLOCK_PRE_AIO); |
1422 | if (err) { | |
e12dd7bd | 1423 | pgoff_t last_off; |
fbfa2cc5 | 1424 | |
e12dd7bd | 1425 | if (!map.m_len) |
a7de6086 | 1426 | return err; |
98397ff3 | 1427 | |
e12dd7bd JK |
1428 | last_off = map.m_lblk + map.m_len - 1; |
1429 | ||
1430 | /* update new size to the failed position */ | |
1431 | new_size = (last_off == pg_end) ? offset + len: | |
1432 | (loff_t)(last_off + 1) << PAGE_SHIFT; | |
1433 | } else { | |
1434 | new_size = ((loff_t)pg_end << PAGE_SHIFT) + off_end; | |
fbfa2cc5 JK |
1435 | } |
1436 | ||
ee6d182f | 1437 | if (!(mode & FALLOC_FL_KEEP_SIZE) && i_size_read(inode) < new_size) |
fc9581c8 | 1438 | f2fs_i_size_write(inode, new_size); |
fbfa2cc5 | 1439 | |
a7de6086 | 1440 | return err; |
fbfa2cc5 JK |
1441 | } |
1442 | ||
1443 | static long f2fs_fallocate(struct file *file, int mode, | |
1444 | loff_t offset, loff_t len) | |
1445 | { | |
6131ffaa | 1446 | struct inode *inode = file_inode(file); |
587c0a42 | 1447 | long ret = 0; |
fbfa2cc5 | 1448 | |
c998012b CY |
1449 | /* f2fs only support ->fallocate for regular file */ |
1450 | if (!S_ISREG(inode->i_mode)) | |
1451 | return -EINVAL; | |
1452 | ||
f62185d0 CY |
1453 | if (f2fs_encrypted_inode(inode) && |
1454 | (mode & (FALLOC_FL_COLLAPSE_RANGE | FALLOC_FL_INSERT_RANGE))) | |
fcc85a4d JK |
1455 | return -EOPNOTSUPP; |
1456 | ||
b4ace337 | 1457 | if (mode & ~(FALLOC_FL_KEEP_SIZE | FALLOC_FL_PUNCH_HOLE | |
f62185d0 CY |
1458 | FALLOC_FL_COLLAPSE_RANGE | FALLOC_FL_ZERO_RANGE | |
1459 | FALLOC_FL_INSERT_RANGE)) | |
fbfa2cc5 JK |
1460 | return -EOPNOTSUPP; |
1461 | ||
5955102c | 1462 | inode_lock(inode); |
3375f696 | 1463 | |
587c0a42 TY |
1464 | if (mode & FALLOC_FL_PUNCH_HOLE) { |
1465 | if (offset >= inode->i_size) | |
1466 | goto out; | |
1467 | ||
a66c7b2f | 1468 | ret = punch_hole(inode, offset, len); |
b4ace337 CY |
1469 | } else if (mode & FALLOC_FL_COLLAPSE_RANGE) { |
1470 | ret = f2fs_collapse_range(inode, offset, len); | |
75cd4e09 CY |
1471 | } else if (mode & FALLOC_FL_ZERO_RANGE) { |
1472 | ret = f2fs_zero_range(inode, offset, len, mode); | |
f62185d0 CY |
1473 | } else if (mode & FALLOC_FL_INSERT_RANGE) { |
1474 | ret = f2fs_insert_range(inode, offset, len); | |
b4ace337 | 1475 | } else { |
fbfa2cc5 | 1476 | ret = expand_inode_data(inode, offset, len, mode); |
b4ace337 | 1477 | } |
fbfa2cc5 | 1478 | |
3af60a49 | 1479 | if (!ret) { |
078cd827 | 1480 | inode->i_mtime = inode->i_ctime = current_time(inode); |
7c45729a | 1481 | f2fs_mark_inode_dirty_sync(inode, false); |
26787236 JK |
1482 | if (mode & FALLOC_FL_KEEP_SIZE) |
1483 | file_set_keep_isize(inode); | |
d0239e1b | 1484 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); |
3af60a49 | 1485 | } |
3375f696 | 1486 | |
587c0a42 | 1487 | out: |
5955102c | 1488 | inode_unlock(inode); |
3375f696 | 1489 | |
c01e2853 | 1490 | trace_f2fs_fallocate(inode, mode, offset, len, ret); |
fbfa2cc5 JK |
1491 | return ret; |
1492 | } | |
1493 | ||
1e84371f JK |
1494 | static int f2fs_release_file(struct inode *inode, struct file *filp) |
1495 | { | |
de5307e4 JK |
1496 | /* |
1497 | * f2fs_relase_file is called at every close calls. So we should | |
1498 | * not drop any inmemory pages by close called by other process. | |
1499 | */ | |
1500 | if (!(filp->f_mode & FMODE_WRITE) || | |
1501 | atomic_read(&inode->i_writecount) != 1) | |
1502 | return 0; | |
1503 | ||
1e84371f JK |
1504 | /* some remained atomic pages should discarded */ |
1505 | if (f2fs_is_atomic_file(inode)) | |
29b96b54 | 1506 | drop_inmem_pages(inode); |
1e84371f | 1507 | if (f2fs_is_volatile_file(inode)) { |
91942321 | 1508 | clear_inode_flag(inode, FI_VOLATILE_FILE); |
648d50ba | 1509 | stat_dec_volatile_write(inode); |
91942321 | 1510 | set_inode_flag(inode, FI_DROP_CACHE); |
1e84371f | 1511 | filemap_fdatawrite(inode->i_mapping); |
91942321 | 1512 | clear_inode_flag(inode, FI_DROP_CACHE); |
1e84371f JK |
1513 | } |
1514 | return 0; | |
1515 | } | |
1516 | ||
7a10f017 | 1517 | static int f2fs_file_flush(struct file *file, fl_owner_t id) |
fbfa2cc5 | 1518 | { |
7a10f017 JK |
1519 | struct inode *inode = file_inode(file); |
1520 | ||
1521 | /* | |
1522 | * If the process doing a transaction is crashed, we should do | |
1523 | * roll-back. Otherwise, other reader/write can see corrupted database | |
1524 | * until all the writers close its file. Since this should be done | |
1525 | * before dropping file lock, it needs to do in ->flush. | |
1526 | */ | |
1527 | if (f2fs_is_atomic_file(inode) && | |
1528 | F2FS_I(inode)->inmem_task == current) | |
1529 | drop_inmem_pages(inode); | |
1530 | return 0; | |
fbfa2cc5 JK |
1531 | } |
1532 | ||
52656e6c | 1533 | static int f2fs_ioc_getflags(struct file *filp, unsigned long arg) |
fbfa2cc5 | 1534 | { |
6131ffaa | 1535 | struct inode *inode = file_inode(filp); |
fbfa2cc5 | 1536 | struct f2fs_inode_info *fi = F2FS_I(inode); |
2c1d0305 CY |
1537 | unsigned int flags = fi->i_flags & |
1538 | (FS_FL_USER_VISIBLE | FS_PROJINHERIT_FL); | |
52656e6c JK |
1539 | return put_user(flags, (int __user *)arg); |
1540 | } | |
fbfa2cc5 | 1541 | |
2c1d0305 CY |
1542 | static int __f2fs_ioc_setflags(struct inode *inode, unsigned int flags) |
1543 | { | |
1544 | struct f2fs_inode_info *fi = F2FS_I(inode); | |
1545 | unsigned int oldflags; | |
1546 | ||
1547 | /* Is it quota file? Do not allow user to mess with it */ | |
1548 | if (IS_NOQUOTA(inode)) | |
1549 | return -EPERM; | |
1550 | ||
1551 | flags = f2fs_mask_flags(inode->i_mode, flags); | |
1552 | ||
1553 | oldflags = fi->i_flags; | |
1554 | ||
1555 | if ((flags ^ oldflags) & (FS_APPEND_FL | FS_IMMUTABLE_FL)) | |
1556 | if (!capable(CAP_LINUX_IMMUTABLE)) | |
1557 | return -EPERM; | |
1558 | ||
1559 | flags = flags & (FS_FL_USER_MODIFIABLE | FS_PROJINHERIT_FL); | |
1560 | flags |= oldflags & ~(FS_FL_USER_MODIFIABLE | FS_PROJINHERIT_FL); | |
1561 | fi->i_flags = flags; | |
1562 | ||
1563 | if (fi->i_flags & FS_PROJINHERIT_FL) | |
1564 | set_inode_flag(inode, FI_PROJ_INHERIT); | |
1565 | else | |
1566 | clear_inode_flag(inode, FI_PROJ_INHERIT); | |
1567 | ||
1568 | inode->i_ctime = current_time(inode); | |
1569 | f2fs_set_inode_flags(inode); | |
1570 | f2fs_mark_inode_dirty_sync(inode, false); | |
1571 | return 0; | |
1572 | } | |
1573 | ||
52656e6c JK |
1574 | static int f2fs_ioc_setflags(struct file *filp, unsigned long arg) |
1575 | { | |
1576 | struct inode *inode = file_inode(filp); | |
69494229 | 1577 | unsigned int flags; |
52656e6c | 1578 | int ret; |
fbfa2cc5 | 1579 | |
7fb17fe4 CY |
1580 | if (!inode_owner_or_capable(inode)) |
1581 | return -EACCES; | |
1582 | ||
1583 | if (get_user(flags, (int __user *)arg)) | |
1584 | return -EFAULT; | |
1585 | ||
52656e6c JK |
1586 | ret = mnt_want_write_file(filp); |
1587 | if (ret) | |
1588 | return ret; | |
fbfa2cc5 | 1589 | |
5955102c | 1590 | inode_lock(inode); |
fbfa2cc5 | 1591 | |
2c1d0305 | 1592 | ret = __f2fs_ioc_setflags(inode, flags); |
fbfa2cc5 | 1593 | |
a72d4b97 | 1594 | inode_unlock(inode); |
52656e6c JK |
1595 | mnt_drop_write_file(filp); |
1596 | return ret; | |
1597 | } | |
4b2fecc8 | 1598 | |
d49f3e89 CY |
1599 | static int f2fs_ioc_getversion(struct file *filp, unsigned long arg) |
1600 | { | |
1601 | struct inode *inode = file_inode(filp); | |
1602 | ||
1603 | return put_user(inode->i_generation, (int __user *)arg); | |
1604 | } | |
1605 | ||
88b88a66 JK |
1606 | static int f2fs_ioc_start_atomic_write(struct file *filp) |
1607 | { | |
1608 | struct inode *inode = file_inode(filp); | |
f4c9c743 | 1609 | int ret; |
88b88a66 JK |
1610 | |
1611 | if (!inode_owner_or_capable(inode)) | |
1612 | return -EACCES; | |
1613 | ||
e811898c JK |
1614 | if (!S_ISREG(inode->i_mode)) |
1615 | return -EINVAL; | |
1616 | ||
7fb17fe4 CY |
1617 | ret = mnt_want_write_file(filp); |
1618 | if (ret) | |
1619 | return ret; | |
1620 | ||
0fac558b CY |
1621 | inode_lock(inode); |
1622 | ||
1e84371f | 1623 | if (f2fs_is_atomic_file(inode)) |
7fb17fe4 | 1624 | goto out; |
88b88a66 | 1625 | |
f4c9c743 CY |
1626 | ret = f2fs_convert_inline_inode(inode); |
1627 | if (ret) | |
7fb17fe4 | 1628 | goto out; |
88b88a66 | 1629 | |
91942321 | 1630 | set_inode_flag(inode, FI_ATOMIC_FILE); |
6c3acd97 | 1631 | set_inode_flag(inode, FI_HOT_DATA); |
d0239e1b JK |
1632 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); |
1633 | ||
c27753d6 | 1634 | if (!get_dirty_pages(inode)) |
684ca7e5 | 1635 | goto inc_stat; |
c27753d6 JK |
1636 | |
1637 | f2fs_msg(F2FS_I_SB(inode)->sb, KERN_WARNING, | |
204706c7 | 1638 | "Unexpected flush for atomic writes: ino=%lu, npages=%u", |
c27753d6 JK |
1639 | inode->i_ino, get_dirty_pages(inode)); |
1640 | ret = filemap_write_and_wait_range(inode->i_mapping, 0, LLONG_MAX); | |
684ca7e5 | 1641 | if (ret) { |
91942321 | 1642 | clear_inode_flag(inode, FI_ATOMIC_FILE); |
84a23fbe | 1643 | clear_inode_flag(inode, FI_HOT_DATA); |
684ca7e5 KM |
1644 | goto out; |
1645 | } | |
1646 | ||
1647 | inc_stat: | |
7a10f017 | 1648 | F2FS_I(inode)->inmem_task = current; |
26a28a0c JK |
1649 | stat_inc_atomic_write(inode); |
1650 | stat_update_max_atomic_write(inode); | |
684ca7e5 | 1651 | out: |
0fac558b | 1652 | inode_unlock(inode); |
7fb17fe4 | 1653 | mnt_drop_write_file(filp); |
c27753d6 | 1654 | return ret; |
88b88a66 JK |
1655 | } |
1656 | ||
1657 | static int f2fs_ioc_commit_atomic_write(struct file *filp) | |
1658 | { | |
1659 | struct inode *inode = file_inode(filp); | |
1660 | int ret; | |
1661 | ||
1662 | if (!inode_owner_or_capable(inode)) | |
1663 | return -EACCES; | |
1664 | ||
1665 | ret = mnt_want_write_file(filp); | |
1666 | if (ret) | |
1667 | return ret; | |
1668 | ||
0fac558b CY |
1669 | inode_lock(inode); |
1670 | ||
7fb17fe4 CY |
1671 | if (f2fs_is_volatile_file(inode)) |
1672 | goto err_out; | |
1673 | ||
6282adbf | 1674 | if (f2fs_is_atomic_file(inode)) { |
29b96b54 | 1675 | ret = commit_inmem_pages(inode); |
5fe45743 | 1676 | if (ret) |
edb27dee | 1677 | goto err_out; |
5fe45743 | 1678 | |
26a28a0c | 1679 | ret = f2fs_do_sync_file(filp, 0, LLONG_MAX, 0, true); |
5fe45743 CY |
1680 | if (!ret) { |
1681 | clear_inode_flag(inode, FI_ATOMIC_FILE); | |
84a23fbe | 1682 | clear_inode_flag(inode, FI_HOT_DATA); |
5fe45743 | 1683 | stat_dec_atomic_write(inode); |
447135a8 | 1684 | } |
26a28a0c | 1685 | } else { |
774e1b78 | 1686 | ret = f2fs_do_sync_file(filp, 0, LLONG_MAX, 1, false); |
6282adbf | 1687 | } |
edb27dee | 1688 | err_out: |
0fac558b | 1689 | inode_unlock(inode); |
88b88a66 JK |
1690 | mnt_drop_write_file(filp); |
1691 | return ret; | |
1692 | } | |
1693 | ||
02a1335f JK |
1694 | static int f2fs_ioc_start_volatile_write(struct file *filp) |
1695 | { | |
1696 | struct inode *inode = file_inode(filp); | |
f4c9c743 | 1697 | int ret; |
02a1335f JK |
1698 | |
1699 | if (!inode_owner_or_capable(inode)) | |
1700 | return -EACCES; | |
1701 | ||
8ff0971f CY |
1702 | if (!S_ISREG(inode->i_mode)) |
1703 | return -EINVAL; | |
1704 | ||
7fb17fe4 CY |
1705 | ret = mnt_want_write_file(filp); |
1706 | if (ret) | |
1707 | return ret; | |
1708 | ||
0fac558b CY |
1709 | inode_lock(inode); |
1710 | ||
1e84371f | 1711 | if (f2fs_is_volatile_file(inode)) |
7fb17fe4 | 1712 | goto out; |
1e84371f | 1713 | |
f4c9c743 CY |
1714 | ret = f2fs_convert_inline_inode(inode); |
1715 | if (ret) | |
7fb17fe4 | 1716 | goto out; |
b3d208f9 | 1717 | |
648d50ba CY |
1718 | stat_inc_volatile_write(inode); |
1719 | stat_update_max_volatile_write(inode); | |
1720 | ||
91942321 | 1721 | set_inode_flag(inode, FI_VOLATILE_FILE); |
d0239e1b | 1722 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); |
7fb17fe4 | 1723 | out: |
0fac558b | 1724 | inode_unlock(inode); |
7fb17fe4 CY |
1725 | mnt_drop_write_file(filp); |
1726 | return ret; | |
02a1335f JK |
1727 | } |
1728 | ||
1e84371f JK |
1729 | static int f2fs_ioc_release_volatile_write(struct file *filp) |
1730 | { | |
1731 | struct inode *inode = file_inode(filp); | |
7fb17fe4 | 1732 | int ret; |
1e84371f JK |
1733 | |
1734 | if (!inode_owner_or_capable(inode)) | |
1735 | return -EACCES; | |
1736 | ||
7fb17fe4 CY |
1737 | ret = mnt_want_write_file(filp); |
1738 | if (ret) | |
1739 | return ret; | |
1740 | ||
0fac558b CY |
1741 | inode_lock(inode); |
1742 | ||
1e84371f | 1743 | if (!f2fs_is_volatile_file(inode)) |
7fb17fe4 | 1744 | goto out; |
1e84371f | 1745 | |
7fb17fe4 CY |
1746 | if (!f2fs_is_first_block_written(inode)) { |
1747 | ret = truncate_partial_data_page(inode, 0, true); | |
1748 | goto out; | |
1749 | } | |
3c6c2beb | 1750 | |
7fb17fe4 CY |
1751 | ret = punch_hole(inode, 0, F2FS_BLKSIZE); |
1752 | out: | |
0fac558b | 1753 | inode_unlock(inode); |
7fb17fe4 CY |
1754 | mnt_drop_write_file(filp); |
1755 | return ret; | |
1e84371f JK |
1756 | } |
1757 | ||
1758 | static int f2fs_ioc_abort_volatile_write(struct file *filp) | |
1759 | { | |
1760 | struct inode *inode = file_inode(filp); | |
1761 | int ret; | |
1762 | ||
1763 | if (!inode_owner_or_capable(inode)) | |
1764 | return -EACCES; | |
1765 | ||
1766 | ret = mnt_want_write_file(filp); | |
1767 | if (ret) | |
1768 | return ret; | |
1769 | ||
0fac558b CY |
1770 | inode_lock(inode); |
1771 | ||
26dc3d44 | 1772 | if (f2fs_is_atomic_file(inode)) |
29b96b54 | 1773 | drop_inmem_pages(inode); |
732d5648 | 1774 | if (f2fs_is_volatile_file(inode)) { |
91942321 | 1775 | clear_inode_flag(inode, FI_VOLATILE_FILE); |
648d50ba | 1776 | stat_dec_volatile_write(inode); |
608514de | 1777 | ret = f2fs_do_sync_file(filp, 0, LLONG_MAX, 0, true); |
732d5648 | 1778 | } |
de6a8ec9 | 1779 | |
0fac558b CY |
1780 | inode_unlock(inode); |
1781 | ||
1e84371f | 1782 | mnt_drop_write_file(filp); |
d0239e1b | 1783 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); |
1e84371f JK |
1784 | return ret; |
1785 | } | |
1786 | ||
1abff93d JK |
1787 | static int f2fs_ioc_shutdown(struct file *filp, unsigned long arg) |
1788 | { | |
1789 | struct inode *inode = file_inode(filp); | |
1790 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
1791 | struct super_block *sb = sbi->sb; | |
1792 | __u32 in; | |
7fb17fe4 | 1793 | int ret; |
1abff93d JK |
1794 | |
1795 | if (!capable(CAP_SYS_ADMIN)) | |
1796 | return -EPERM; | |
1797 | ||
1798 | if (get_user(in, (__u32 __user *)arg)) | |
1799 | return -EFAULT; | |
1800 | ||
7fb17fe4 CY |
1801 | ret = mnt_want_write_file(filp); |
1802 | if (ret) | |
1803 | return ret; | |
1804 | ||
1abff93d JK |
1805 | switch (in) { |
1806 | case F2FS_GOING_DOWN_FULLSYNC: | |
1807 | sb = freeze_bdev(sb->s_bdev); | |
1808 | if (sb && !IS_ERR(sb)) { | |
38f91ca8 | 1809 | f2fs_stop_checkpoint(sbi, false); |
1abff93d JK |
1810 | thaw_bdev(sb->s_bdev, sb); |
1811 | } | |
1812 | break; | |
1813 | case F2FS_GOING_DOWN_METASYNC: | |
1814 | /* do checkpoint only */ | |
1815 | f2fs_sync_fs(sb, 1); | |
38f91ca8 | 1816 | f2fs_stop_checkpoint(sbi, false); |
1abff93d JK |
1817 | break; |
1818 | case F2FS_GOING_DOWN_NOSYNC: | |
38f91ca8 | 1819 | f2fs_stop_checkpoint(sbi, false); |
1abff93d | 1820 | break; |
c912a829 | 1821 | case F2FS_GOING_DOWN_METAFLUSH: |
b0af6d49 | 1822 | sync_meta_pages(sbi, META, LONG_MAX, FS_META_IO); |
38f91ca8 | 1823 | f2fs_stop_checkpoint(sbi, false); |
c912a829 | 1824 | break; |
1abff93d | 1825 | default: |
7fb17fe4 CY |
1826 | ret = -EINVAL; |
1827 | goto out; | |
1abff93d | 1828 | } |
d0239e1b | 1829 | f2fs_update_time(sbi, REQ_TIME); |
7fb17fe4 CY |
1830 | out: |
1831 | mnt_drop_write_file(filp); | |
1832 | return ret; | |
1abff93d JK |
1833 | } |
1834 | ||
52656e6c JK |
1835 | static int f2fs_ioc_fitrim(struct file *filp, unsigned long arg) |
1836 | { | |
1837 | struct inode *inode = file_inode(filp); | |
1838 | struct super_block *sb = inode->i_sb; | |
1839 | struct request_queue *q = bdev_get_queue(sb->s_bdev); | |
1840 | struct fstrim_range range; | |
1841 | int ret; | |
4b2fecc8 | 1842 | |
52656e6c JK |
1843 | if (!capable(CAP_SYS_ADMIN)) |
1844 | return -EPERM; | |
4b2fecc8 | 1845 | |
52656e6c JK |
1846 | if (!blk_queue_discard(q)) |
1847 | return -EOPNOTSUPP; | |
4b2fecc8 | 1848 | |
52656e6c JK |
1849 | if (copy_from_user(&range, (struct fstrim_range __user *)arg, |
1850 | sizeof(range))) | |
1851 | return -EFAULT; | |
4b2fecc8 | 1852 | |
7fb17fe4 CY |
1853 | ret = mnt_want_write_file(filp); |
1854 | if (ret) | |
1855 | return ret; | |
1856 | ||
52656e6c JK |
1857 | range.minlen = max((unsigned int)range.minlen, |
1858 | q->limits.discard_granularity); | |
1859 | ret = f2fs_trim_fs(F2FS_SB(sb), &range); | |
7fb17fe4 | 1860 | mnt_drop_write_file(filp); |
52656e6c JK |
1861 | if (ret < 0) |
1862 | return ret; | |
4b2fecc8 | 1863 | |
52656e6c JK |
1864 | if (copy_to_user((struct fstrim_range __user *)arg, &range, |
1865 | sizeof(range))) | |
1866 | return -EFAULT; | |
d0239e1b | 1867 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); |
52656e6c JK |
1868 | return 0; |
1869 | } | |
1870 | ||
f424f664 JK |
1871 | static bool uuid_is_nonzero(__u8 u[16]) |
1872 | { | |
1873 | int i; | |
1874 | ||
1875 | for (i = 0; i < 16; i++) | |
1876 | if (u[i]) | |
1877 | return true; | |
1878 | return false; | |
1879 | } | |
1880 | ||
1881 | static int f2fs_ioc_set_encryption_policy(struct file *filp, unsigned long arg) | |
1882 | { | |
f424f664 JK |
1883 | struct inode *inode = file_inode(filp); |
1884 | ||
d0239e1b | 1885 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); |
7fb17fe4 | 1886 | |
db717d8e | 1887 | return fscrypt_ioctl_set_policy(filp, (const void __user *)arg); |
f424f664 JK |
1888 | } |
1889 | ||
1890 | static int f2fs_ioc_get_encryption_policy(struct file *filp, unsigned long arg) | |
1891 | { | |
db717d8e | 1892 | return fscrypt_ioctl_get_policy(filp, (void __user *)arg); |
f424f664 JK |
1893 | } |
1894 | ||
1895 | static int f2fs_ioc_get_encryption_pwsalt(struct file *filp, unsigned long arg) | |
1896 | { | |
1897 | struct inode *inode = file_inode(filp); | |
1898 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
1899 | int err; | |
1900 | ||
1901 | if (!f2fs_sb_has_crypto(inode->i_sb)) | |
1902 | return -EOPNOTSUPP; | |
1903 | ||
1904 | if (uuid_is_nonzero(sbi->raw_super->encrypt_pw_salt)) | |
1905 | goto got_it; | |
1906 | ||
1907 | err = mnt_want_write_file(filp); | |
1908 | if (err) | |
1909 | return err; | |
1910 | ||
1911 | /* update superblock with uuid */ | |
1912 | generate_random_uuid(sbi->raw_super->encrypt_pw_salt); | |
1913 | ||
c5bda1c8 | 1914 | err = f2fs_commit_super(sbi, false); |
f424f664 JK |
1915 | if (err) { |
1916 | /* undo new data */ | |
1917 | memset(sbi->raw_super->encrypt_pw_salt, 0, 16); | |
e8240f65 | 1918 | mnt_drop_write_file(filp); |
f424f664 JK |
1919 | return err; |
1920 | } | |
e8240f65 | 1921 | mnt_drop_write_file(filp); |
f424f664 JK |
1922 | got_it: |
1923 | if (copy_to_user((__u8 __user *)arg, sbi->raw_super->encrypt_pw_salt, | |
1924 | 16)) | |
1925 | return -EFAULT; | |
1926 | return 0; | |
1927 | } | |
1928 | ||
c1c1b583 CY |
1929 | static int f2fs_ioc_gc(struct file *filp, unsigned long arg) |
1930 | { | |
1931 | struct inode *inode = file_inode(filp); | |
1932 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
d530d4d8 | 1933 | __u32 sync; |
7fb17fe4 | 1934 | int ret; |
c1c1b583 CY |
1935 | |
1936 | if (!capable(CAP_SYS_ADMIN)) | |
1937 | return -EPERM; | |
1938 | ||
d530d4d8 | 1939 | if (get_user(sync, (__u32 __user *)arg)) |
c1c1b583 CY |
1940 | return -EFAULT; |
1941 | ||
d530d4d8 CY |
1942 | if (f2fs_readonly(sbi->sb)) |
1943 | return -EROFS; | |
c1c1b583 | 1944 | |
7fb17fe4 CY |
1945 | ret = mnt_want_write_file(filp); |
1946 | if (ret) | |
1947 | return ret; | |
1948 | ||
d530d4d8 | 1949 | if (!sync) { |
7fb17fe4 CY |
1950 | if (!mutex_trylock(&sbi->gc_mutex)) { |
1951 | ret = -EBUSY; | |
1952 | goto out; | |
1953 | } | |
d530d4d8 CY |
1954 | } else { |
1955 | mutex_lock(&sbi->gc_mutex); | |
c1c1b583 CY |
1956 | } |
1957 | ||
e066b83c | 1958 | ret = f2fs_gc(sbi, sync, true, NULL_SEGNO); |
7fb17fe4 CY |
1959 | out: |
1960 | mnt_drop_write_file(filp); | |
1961 | return ret; | |
c1c1b583 CY |
1962 | } |
1963 | ||
34dc77ad JK |
1964 | static int f2fs_ioc_gc_range(struct file *filp, unsigned long arg) |
1965 | { | |
1966 | struct inode *inode = file_inode(filp); | |
1967 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
1968 | struct f2fs_gc_range range; | |
1969 | u64 end; | |
1970 | int ret; | |
1971 | ||
1972 | if (!capable(CAP_SYS_ADMIN)) | |
1973 | return -EPERM; | |
1974 | ||
1975 | if (copy_from_user(&range, (struct f2fs_gc_range __user *)arg, | |
1976 | sizeof(range))) | |
1977 | return -EFAULT; | |
1978 | ||
1979 | if (f2fs_readonly(sbi->sb)) | |
1980 | return -EROFS; | |
1981 | ||
1982 | ret = mnt_want_write_file(filp); | |
1983 | if (ret) | |
1984 | return ret; | |
1985 | ||
1986 | end = range.start + range.len; | |
1987 | if (range.start < MAIN_BLKADDR(sbi) || end >= MAX_BLKADDR(sbi)) | |
1988 | return -EINVAL; | |
1989 | do_more: | |
1990 | if (!range.sync) { | |
1991 | if (!mutex_trylock(&sbi->gc_mutex)) { | |
1992 | ret = -EBUSY; | |
1993 | goto out; | |
1994 | } | |
1995 | } else { | |
1996 | mutex_lock(&sbi->gc_mutex); | |
1997 | } | |
1998 | ||
1999 | ret = f2fs_gc(sbi, range.sync, true, GET_SEGNO(sbi, range.start)); | |
2000 | range.start += sbi->blocks_per_seg; | |
2001 | if (range.start <= end) | |
2002 | goto do_more; | |
2003 | out: | |
2004 | mnt_drop_write_file(filp); | |
2005 | return ret; | |
2006 | } | |
2007 | ||
456b88e4 CY |
2008 | static int f2fs_ioc_write_checkpoint(struct file *filp, unsigned long arg) |
2009 | { | |
2010 | struct inode *inode = file_inode(filp); | |
2011 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
7fb17fe4 | 2012 | int ret; |
456b88e4 CY |
2013 | |
2014 | if (!capable(CAP_SYS_ADMIN)) | |
2015 | return -EPERM; | |
2016 | ||
2017 | if (f2fs_readonly(sbi->sb)) | |
2018 | return -EROFS; | |
2019 | ||
7fb17fe4 CY |
2020 | ret = mnt_want_write_file(filp); |
2021 | if (ret) | |
2022 | return ret; | |
2023 | ||
2024 | ret = f2fs_sync_fs(sbi->sb, 1); | |
2025 | ||
2026 | mnt_drop_write_file(filp); | |
2027 | return ret; | |
456b88e4 CY |
2028 | } |
2029 | ||
d323d005 CY |
2030 | static int f2fs_defragment_range(struct f2fs_sb_info *sbi, |
2031 | struct file *filp, | |
2032 | struct f2fs_defragment *range) | |
2033 | { | |
2034 | struct inode *inode = file_inode(filp); | |
da85985c | 2035 | struct f2fs_map_blocks map = { .m_next_pgofs = NULL }; |
e15882b6 | 2036 | struct extent_info ei = {0,0,0}; |
d323d005 | 2037 | pgoff_t pg_start, pg_end; |
3519e3f9 | 2038 | unsigned int blk_per_seg = sbi->blocks_per_seg; |
d323d005 | 2039 | unsigned int total = 0, sec_num; |
d323d005 CY |
2040 | block_t blk_end = 0; |
2041 | bool fragmented = false; | |
2042 | int err; | |
2043 | ||
2044 | /* if in-place-update policy is enabled, don't waste time here */ | |
7eab0c0d | 2045 | if (need_inplace_update_policy(inode, NULL)) |
d323d005 CY |
2046 | return -EINVAL; |
2047 | ||
09cbfeaf KS |
2048 | pg_start = range->start >> PAGE_SHIFT; |
2049 | pg_end = (range->start + range->len) >> PAGE_SHIFT; | |
d323d005 | 2050 | |
2c4db1a6 | 2051 | f2fs_balance_fs(sbi, true); |
d323d005 | 2052 | |
5955102c | 2053 | inode_lock(inode); |
d323d005 CY |
2054 | |
2055 | /* writeback all dirty pages in the range */ | |
2056 | err = filemap_write_and_wait_range(inode->i_mapping, range->start, | |
d8fe4f0e | 2057 | range->start + range->len - 1); |
d323d005 CY |
2058 | if (err) |
2059 | goto out; | |
2060 | ||
2061 | /* | |
2062 | * lookup mapping info in extent cache, skip defragmenting if physical | |
2063 | * block addresses are continuous. | |
2064 | */ | |
2065 | if (f2fs_lookup_extent_cache(inode, pg_start, &ei)) { | |
2066 | if (ei.fofs + ei.len >= pg_end) | |
2067 | goto out; | |
2068 | } | |
2069 | ||
2070 | map.m_lblk = pg_start; | |
d323d005 CY |
2071 | |
2072 | /* | |
2073 | * lookup mapping info in dnode page cache, skip defragmenting if all | |
2074 | * physical block addresses are continuous even if there are hole(s) | |
2075 | * in logical blocks. | |
2076 | */ | |
2077 | while (map.m_lblk < pg_end) { | |
a1c1e9b7 | 2078 | map.m_len = pg_end - map.m_lblk; |
f2220c7f | 2079 | err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_DEFAULT); |
d323d005 CY |
2080 | if (err) |
2081 | goto out; | |
2082 | ||
2083 | if (!(map.m_flags & F2FS_MAP_FLAGS)) { | |
2084 | map.m_lblk++; | |
d323d005 CY |
2085 | continue; |
2086 | } | |
2087 | ||
2088 | if (blk_end && blk_end != map.m_pblk) { | |
2089 | fragmented = true; | |
2090 | break; | |
2091 | } | |
2092 | blk_end = map.m_pblk + map.m_len; | |
2093 | ||
2094 | map.m_lblk += map.m_len; | |
d323d005 CY |
2095 | } |
2096 | ||
2097 | if (!fragmented) | |
2098 | goto out; | |
2099 | ||
2100 | map.m_lblk = pg_start; | |
2101 | map.m_len = pg_end - pg_start; | |
2102 | ||
4ddb1a4d | 2103 | sec_num = (map.m_len + BLKS_PER_SEC(sbi) - 1) / BLKS_PER_SEC(sbi); |
d323d005 CY |
2104 | |
2105 | /* | |
2106 | * make sure there are enough free section for LFS allocation, this can | |
2107 | * avoid defragment running in SSR mode when free section are allocated | |
2108 | * intensively | |
2109 | */ | |
7f3037a5 | 2110 | if (has_not_enough_free_secs(sbi, 0, sec_num)) { |
d323d005 CY |
2111 | err = -EAGAIN; |
2112 | goto out; | |
2113 | } | |
2114 | ||
2115 | while (map.m_lblk < pg_end) { | |
2116 | pgoff_t idx; | |
2117 | int cnt = 0; | |
2118 | ||
2119 | do_map: | |
a1c1e9b7 | 2120 | map.m_len = pg_end - map.m_lblk; |
f2220c7f | 2121 | err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_DEFAULT); |
d323d005 CY |
2122 | if (err) |
2123 | goto clear_out; | |
2124 | ||
2125 | if (!(map.m_flags & F2FS_MAP_FLAGS)) { | |
2126 | map.m_lblk++; | |
2127 | continue; | |
2128 | } | |
2129 | ||
91942321 | 2130 | set_inode_flag(inode, FI_DO_DEFRAG); |
d323d005 CY |
2131 | |
2132 | idx = map.m_lblk; | |
2133 | while (idx < map.m_lblk + map.m_len && cnt < blk_per_seg) { | |
2134 | struct page *page; | |
2135 | ||
2136 | page = get_lock_data_page(inode, idx, true); | |
2137 | if (IS_ERR(page)) { | |
2138 | err = PTR_ERR(page); | |
2139 | goto clear_out; | |
2140 | } | |
2141 | ||
2142 | set_page_dirty(page); | |
2143 | f2fs_put_page(page, 1); | |
2144 | ||
2145 | idx++; | |
2146 | cnt++; | |
2147 | total++; | |
2148 | } | |
2149 | ||
2150 | map.m_lblk = idx; | |
d323d005 CY |
2151 | |
2152 | if (idx < pg_end && cnt < blk_per_seg) | |
2153 | goto do_map; | |
2154 | ||
91942321 | 2155 | clear_inode_flag(inode, FI_DO_DEFRAG); |
d323d005 CY |
2156 | |
2157 | err = filemap_fdatawrite(inode->i_mapping); | |
2158 | if (err) | |
2159 | goto out; | |
2160 | } | |
2161 | clear_out: | |
91942321 | 2162 | clear_inode_flag(inode, FI_DO_DEFRAG); |
d323d005 | 2163 | out: |
5955102c | 2164 | inode_unlock(inode); |
d323d005 | 2165 | if (!err) |
09cbfeaf | 2166 | range->len = (u64)total << PAGE_SHIFT; |
d323d005 CY |
2167 | return err; |
2168 | } | |
2169 | ||
2170 | static int f2fs_ioc_defragment(struct file *filp, unsigned long arg) | |
2171 | { | |
2172 | struct inode *inode = file_inode(filp); | |
2173 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
2174 | struct f2fs_defragment range; | |
2175 | int err; | |
2176 | ||
2177 | if (!capable(CAP_SYS_ADMIN)) | |
2178 | return -EPERM; | |
2179 | ||
7eab0c0d | 2180 | if (!S_ISREG(inode->i_mode) || f2fs_is_atomic_file(inode)) |
d323d005 CY |
2181 | return -EINVAL; |
2182 | ||
d7563861 KM |
2183 | if (f2fs_readonly(sbi->sb)) |
2184 | return -EROFS; | |
d323d005 CY |
2185 | |
2186 | if (copy_from_user(&range, (struct f2fs_defragment __user *)arg, | |
d7563861 KM |
2187 | sizeof(range))) |
2188 | return -EFAULT; | |
d323d005 CY |
2189 | |
2190 | /* verify alignment of offset & size */ | |
d7563861 KM |
2191 | if (range.start & (F2FS_BLKSIZE - 1) || range.len & (F2FS_BLKSIZE - 1)) |
2192 | return -EINVAL; | |
d323d005 | 2193 | |
1941d7bc | 2194 | if (unlikely((range.start + range.len) >> PAGE_SHIFT > |
d7563861 KM |
2195 | sbi->max_file_blocks)) |
2196 | return -EINVAL; | |
2197 | ||
2198 | err = mnt_want_write_file(filp); | |
2199 | if (err) | |
2200 | return err; | |
1941d7bc | 2201 | |
d323d005 | 2202 | err = f2fs_defragment_range(sbi, filp, &range); |
d7563861 KM |
2203 | mnt_drop_write_file(filp); |
2204 | ||
d0239e1b | 2205 | f2fs_update_time(sbi, REQ_TIME); |
d323d005 | 2206 | if (err < 0) |
d7563861 | 2207 | return err; |
d323d005 CY |
2208 | |
2209 | if (copy_to_user((struct f2fs_defragment __user *)arg, &range, | |
2210 | sizeof(range))) | |
d7563861 KM |
2211 | return -EFAULT; |
2212 | ||
2213 | return 0; | |
d323d005 CY |
2214 | } |
2215 | ||
4dd6f977 JK |
2216 | static int f2fs_move_file_range(struct file *file_in, loff_t pos_in, |
2217 | struct file *file_out, loff_t pos_out, size_t len) | |
2218 | { | |
2219 | struct inode *src = file_inode(file_in); | |
2220 | struct inode *dst = file_inode(file_out); | |
2221 | struct f2fs_sb_info *sbi = F2FS_I_SB(src); | |
2222 | size_t olen = len, dst_max_i_size = 0; | |
2223 | size_t dst_osize; | |
2224 | int ret; | |
2225 | ||
2226 | if (file_in->f_path.mnt != file_out->f_path.mnt || | |
2227 | src->i_sb != dst->i_sb) | |
2228 | return -EXDEV; | |
2229 | ||
2230 | if (unlikely(f2fs_readonly(src->i_sb))) | |
2231 | return -EROFS; | |
2232 | ||
fe8494bf CY |
2233 | if (!S_ISREG(src->i_mode) || !S_ISREG(dst->i_mode)) |
2234 | return -EINVAL; | |
4dd6f977 JK |
2235 | |
2236 | if (f2fs_encrypted_inode(src) || f2fs_encrypted_inode(dst)) | |
2237 | return -EOPNOTSUPP; | |
2238 | ||
d95fd91c FL |
2239 | if (src == dst) { |
2240 | if (pos_in == pos_out) | |
2241 | return 0; | |
2242 | if (pos_out > pos_in && pos_out < pos_in + len) | |
2243 | return -EINVAL; | |
2244 | } | |
2245 | ||
4dd6f977 | 2246 | inode_lock(src); |
20a3d61d CY |
2247 | if (src != dst) { |
2248 | if (!inode_trylock(dst)) { | |
2249 | ret = -EBUSY; | |
2250 | goto out; | |
2251 | } | |
2252 | } | |
4dd6f977 JK |
2253 | |
2254 | ret = -EINVAL; | |
2255 | if (pos_in + len > src->i_size || pos_in + len < pos_in) | |
2256 | goto out_unlock; | |
2257 | if (len == 0) | |
2258 | olen = len = src->i_size - pos_in; | |
2259 | if (pos_in + len == src->i_size) | |
2260 | len = ALIGN(src->i_size, F2FS_BLKSIZE) - pos_in; | |
2261 | if (len == 0) { | |
2262 | ret = 0; | |
2263 | goto out_unlock; | |
2264 | } | |
2265 | ||
2266 | dst_osize = dst->i_size; | |
2267 | if (pos_out + olen > dst->i_size) | |
2268 | dst_max_i_size = pos_out + olen; | |
2269 | ||
2270 | /* verify the end result is block aligned */ | |
2271 | if (!IS_ALIGNED(pos_in, F2FS_BLKSIZE) || | |
2272 | !IS_ALIGNED(pos_in + len, F2FS_BLKSIZE) || | |
2273 | !IS_ALIGNED(pos_out, F2FS_BLKSIZE)) | |
2274 | goto out_unlock; | |
2275 | ||
2276 | ret = f2fs_convert_inline_inode(src); | |
2277 | if (ret) | |
2278 | goto out_unlock; | |
2279 | ||
2280 | ret = f2fs_convert_inline_inode(dst); | |
2281 | if (ret) | |
2282 | goto out_unlock; | |
2283 | ||
2284 | /* write out all dirty pages from offset */ | |
2285 | ret = filemap_write_and_wait_range(src->i_mapping, | |
2286 | pos_in, pos_in + len); | |
2287 | if (ret) | |
2288 | goto out_unlock; | |
2289 | ||
2290 | ret = filemap_write_and_wait_range(dst->i_mapping, | |
2291 | pos_out, pos_out + len); | |
2292 | if (ret) | |
2293 | goto out_unlock; | |
2294 | ||
2295 | f2fs_balance_fs(sbi, true); | |
2296 | f2fs_lock_op(sbi); | |
61e4da11 FL |
2297 | ret = __exchange_data_block(src, dst, pos_in >> F2FS_BLKSIZE_BITS, |
2298 | pos_out >> F2FS_BLKSIZE_BITS, | |
2299 | len >> F2FS_BLKSIZE_BITS, false); | |
4dd6f977 JK |
2300 | |
2301 | if (!ret) { | |
2302 | if (dst_max_i_size) | |
2303 | f2fs_i_size_write(dst, dst_max_i_size); | |
2304 | else if (dst_osize != dst->i_size) | |
2305 | f2fs_i_size_write(dst, dst_osize); | |
2306 | } | |
2307 | f2fs_unlock_op(sbi); | |
2308 | out_unlock: | |
2309 | if (src != dst) | |
2310 | inode_unlock(dst); | |
20a3d61d | 2311 | out: |
4dd6f977 JK |
2312 | inode_unlock(src); |
2313 | return ret; | |
2314 | } | |
2315 | ||
2316 | static int f2fs_ioc_move_range(struct file *filp, unsigned long arg) | |
2317 | { | |
2318 | struct f2fs_move_range range; | |
2319 | struct fd dst; | |
2320 | int err; | |
2321 | ||
2322 | if (!(filp->f_mode & FMODE_READ) || | |
2323 | !(filp->f_mode & FMODE_WRITE)) | |
2324 | return -EBADF; | |
2325 | ||
2326 | if (copy_from_user(&range, (struct f2fs_move_range __user *)arg, | |
2327 | sizeof(range))) | |
2328 | return -EFAULT; | |
2329 | ||
2330 | dst = fdget(range.dst_fd); | |
2331 | if (!dst.file) | |
2332 | return -EBADF; | |
2333 | ||
2334 | if (!(dst.file->f_mode & FMODE_WRITE)) { | |
2335 | err = -EBADF; | |
2336 | goto err_out; | |
2337 | } | |
2338 | ||
2339 | err = mnt_want_write_file(filp); | |
2340 | if (err) | |
2341 | goto err_out; | |
2342 | ||
2343 | err = f2fs_move_file_range(filp, range.pos_in, dst.file, | |
2344 | range.pos_out, range.len); | |
2345 | ||
2346 | mnt_drop_write_file(filp); | |
3cecfa5f KM |
2347 | if (err) |
2348 | goto err_out; | |
4dd6f977 JK |
2349 | |
2350 | if (copy_to_user((struct f2fs_move_range __user *)arg, | |
2351 | &range, sizeof(range))) | |
2352 | err = -EFAULT; | |
2353 | err_out: | |
2354 | fdput(dst); | |
2355 | return err; | |
2356 | } | |
2357 | ||
e066b83c JK |
2358 | static int f2fs_ioc_flush_device(struct file *filp, unsigned long arg) |
2359 | { | |
2360 | struct inode *inode = file_inode(filp); | |
2361 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
2362 | struct sit_info *sm = SIT_I(sbi); | |
2363 | unsigned int start_segno = 0, end_segno = 0; | |
2364 | unsigned int dev_start_segno = 0, dev_end_segno = 0; | |
2365 | struct f2fs_flush_device range; | |
2366 | int ret; | |
2367 | ||
2368 | if (!capable(CAP_SYS_ADMIN)) | |
2369 | return -EPERM; | |
2370 | ||
2371 | if (f2fs_readonly(sbi->sb)) | |
2372 | return -EROFS; | |
2373 | ||
2374 | if (copy_from_user(&range, (struct f2fs_flush_device __user *)arg, | |
2375 | sizeof(range))) | |
2376 | return -EFAULT; | |
2377 | ||
2378 | if (sbi->s_ndevs <= 1 || sbi->s_ndevs - 1 <= range.dev_num || | |
2379 | sbi->segs_per_sec != 1) { | |
2380 | f2fs_msg(sbi->sb, KERN_WARNING, | |
2381 | "Can't flush %u in %d for segs_per_sec %u != 1\n", | |
2382 | range.dev_num, sbi->s_ndevs, | |
2383 | sbi->segs_per_sec); | |
2384 | return -EINVAL; | |
2385 | } | |
2386 | ||
2387 | ret = mnt_want_write_file(filp); | |
2388 | if (ret) | |
2389 | return ret; | |
2390 | ||
2391 | if (range.dev_num != 0) | |
2392 | dev_start_segno = GET_SEGNO(sbi, FDEV(range.dev_num).start_blk); | |
2393 | dev_end_segno = GET_SEGNO(sbi, FDEV(range.dev_num).end_blk); | |
2394 | ||
2395 | start_segno = sm->last_victim[FLUSH_DEVICE]; | |
2396 | if (start_segno < dev_start_segno || start_segno >= dev_end_segno) | |
2397 | start_segno = dev_start_segno; | |
2398 | end_segno = min(start_segno + range.segments, dev_end_segno); | |
2399 | ||
2400 | while (start_segno < end_segno) { | |
2401 | if (!mutex_trylock(&sbi->gc_mutex)) { | |
2402 | ret = -EBUSY; | |
2403 | goto out; | |
2404 | } | |
2405 | sm->last_victim[GC_CB] = end_segno + 1; | |
2406 | sm->last_victim[GC_GREEDY] = end_segno + 1; | |
2407 | sm->last_victim[ALLOC_NEXT] = end_segno + 1; | |
2408 | ret = f2fs_gc(sbi, true, true, start_segno); | |
2409 | if (ret == -EAGAIN) | |
2410 | ret = 0; | |
2411 | else if (ret < 0) | |
2412 | break; | |
2413 | start_segno++; | |
2414 | } | |
2415 | out: | |
2416 | mnt_drop_write_file(filp); | |
2417 | return ret; | |
2418 | } | |
2419 | ||
e65ef207 JK |
2420 | static int f2fs_ioc_get_features(struct file *filp, unsigned long arg) |
2421 | { | |
2422 | struct inode *inode = file_inode(filp); | |
2423 | u32 sb_feature = le32_to_cpu(F2FS_I_SB(inode)->raw_super->feature); | |
2424 | ||
2425 | /* Must validate to set it with SQLite behavior in Android. */ | |
2426 | sb_feature |= F2FS_FEATURE_ATOMIC_WRITE; | |
2427 | ||
2428 | return put_user(sb_feature, (u32 __user *)arg); | |
2429 | } | |
e066b83c | 2430 | |
2c1d0305 CY |
2431 | #ifdef CONFIG_QUOTA |
2432 | static int f2fs_ioc_setproject(struct file *filp, __u32 projid) | |
2433 | { | |
2434 | struct inode *inode = file_inode(filp); | |
2435 | struct f2fs_inode_info *fi = F2FS_I(inode); | |
2436 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
2437 | struct super_block *sb = sbi->sb; | |
2438 | struct dquot *transfer_to[MAXQUOTAS] = {}; | |
2439 | struct page *ipage; | |
2440 | kprojid_t kprojid; | |
2441 | int err; | |
2442 | ||
2443 | if (!f2fs_sb_has_project_quota(sb)) { | |
2444 | if (projid != F2FS_DEF_PROJID) | |
2445 | return -EOPNOTSUPP; | |
2446 | else | |
2447 | return 0; | |
2448 | } | |
2449 | ||
2450 | if (!f2fs_has_extra_attr(inode)) | |
2451 | return -EOPNOTSUPP; | |
2452 | ||
2453 | kprojid = make_kprojid(&init_user_ns, (projid_t)projid); | |
2454 | ||
2455 | if (projid_eq(kprojid, F2FS_I(inode)->i_projid)) | |
2456 | return 0; | |
2457 | ||
2458 | err = mnt_want_write_file(filp); | |
2459 | if (err) | |
2460 | return err; | |
2461 | ||
2462 | err = -EPERM; | |
2463 | inode_lock(inode); | |
2464 | ||
2465 | /* Is it quota file? Do not allow user to mess with it */ | |
2466 | if (IS_NOQUOTA(inode)) | |
2467 | goto out_unlock; | |
2468 | ||
2469 | ipage = get_node_page(sbi, inode->i_ino); | |
2470 | if (IS_ERR(ipage)) { | |
2471 | err = PTR_ERR(ipage); | |
2472 | goto out_unlock; | |
2473 | } | |
2474 | ||
2475 | if (!F2FS_FITS_IN_INODE(F2FS_INODE(ipage), fi->i_extra_isize, | |
2476 | i_projid)) { | |
2477 | err = -EOVERFLOW; | |
2478 | f2fs_put_page(ipage, 1); | |
2479 | goto out_unlock; | |
2480 | } | |
2481 | f2fs_put_page(ipage, 1); | |
2482 | ||
2483 | dquot_initialize(inode); | |
2484 | ||
2485 | transfer_to[PRJQUOTA] = dqget(sb, make_kqid_projid(kprojid)); | |
2486 | if (!IS_ERR(transfer_to[PRJQUOTA])) { | |
2487 | err = __dquot_transfer(inode, transfer_to); | |
2488 | dqput(transfer_to[PRJQUOTA]); | |
2489 | if (err) | |
2490 | goto out_dirty; | |
2491 | } | |
2492 | ||
2493 | F2FS_I(inode)->i_projid = kprojid; | |
2494 | inode->i_ctime = current_time(inode); | |
2495 | out_dirty: | |
2496 | f2fs_mark_inode_dirty_sync(inode, true); | |
2497 | out_unlock: | |
2498 | inode_unlock(inode); | |
2499 | mnt_drop_write_file(filp); | |
2500 | return err; | |
2501 | } | |
2502 | #else | |
2503 | static int f2fs_ioc_setproject(struct file *filp, __u32 projid) | |
2504 | { | |
2505 | if (projid != F2FS_DEF_PROJID) | |
2506 | return -EOPNOTSUPP; | |
2507 | return 0; | |
2508 | } | |
2509 | #endif | |
2510 | ||
2511 | /* Transfer internal flags to xflags */ | |
2512 | static inline __u32 f2fs_iflags_to_xflags(unsigned long iflags) | |
2513 | { | |
2514 | __u32 xflags = 0; | |
2515 | ||
2516 | if (iflags & FS_SYNC_FL) | |
2517 | xflags |= FS_XFLAG_SYNC; | |
2518 | if (iflags & FS_IMMUTABLE_FL) | |
2519 | xflags |= FS_XFLAG_IMMUTABLE; | |
2520 | if (iflags & FS_APPEND_FL) | |
2521 | xflags |= FS_XFLAG_APPEND; | |
2522 | if (iflags & FS_NODUMP_FL) | |
2523 | xflags |= FS_XFLAG_NODUMP; | |
2524 | if (iflags & FS_NOATIME_FL) | |
2525 | xflags |= FS_XFLAG_NOATIME; | |
2526 | if (iflags & FS_PROJINHERIT_FL) | |
2527 | xflags |= FS_XFLAG_PROJINHERIT; | |
2528 | return xflags; | |
2529 | } | |
2530 | ||
2531 | #define F2FS_SUPPORTED_FS_XFLAGS (FS_XFLAG_SYNC | FS_XFLAG_IMMUTABLE | \ | |
2532 | FS_XFLAG_APPEND | FS_XFLAG_NODUMP | \ | |
2533 | FS_XFLAG_NOATIME | FS_XFLAG_PROJINHERIT) | |
2534 | ||
2535 | /* Flags we can manipulate with through EXT4_IOC_FSSETXATTR */ | |
2536 | #define F2FS_FL_XFLAG_VISIBLE (FS_SYNC_FL | \ | |
2537 | FS_IMMUTABLE_FL | \ | |
2538 | FS_APPEND_FL | \ | |
2539 | FS_NODUMP_FL | \ | |
2540 | FS_NOATIME_FL | \ | |
2541 | FS_PROJINHERIT_FL) | |
2542 | ||
2543 | /* Transfer xflags flags to internal */ | |
2544 | static inline unsigned long f2fs_xflags_to_iflags(__u32 xflags) | |
2545 | { | |
2546 | unsigned long iflags = 0; | |
2547 | ||
2548 | if (xflags & FS_XFLAG_SYNC) | |
2549 | iflags |= FS_SYNC_FL; | |
2550 | if (xflags & FS_XFLAG_IMMUTABLE) | |
2551 | iflags |= FS_IMMUTABLE_FL; | |
2552 | if (xflags & FS_XFLAG_APPEND) | |
2553 | iflags |= FS_APPEND_FL; | |
2554 | if (xflags & FS_XFLAG_NODUMP) | |
2555 | iflags |= FS_NODUMP_FL; | |
2556 | if (xflags & FS_XFLAG_NOATIME) | |
2557 | iflags |= FS_NOATIME_FL; | |
2558 | if (xflags & FS_XFLAG_PROJINHERIT) | |
2559 | iflags |= FS_PROJINHERIT_FL; | |
2560 | ||
2561 | return iflags; | |
2562 | } | |
2563 | ||
2564 | static int f2fs_ioc_fsgetxattr(struct file *filp, unsigned long arg) | |
2565 | { | |
2566 | struct inode *inode = file_inode(filp); | |
2567 | struct f2fs_inode_info *fi = F2FS_I(inode); | |
2568 | struct fsxattr fa; | |
2569 | ||
2570 | memset(&fa, 0, sizeof(struct fsxattr)); | |
2571 | fa.fsx_xflags = f2fs_iflags_to_xflags(fi->i_flags & | |
2572 | (FS_FL_USER_VISIBLE | FS_PROJINHERIT_FL)); | |
2573 | ||
2574 | if (f2fs_sb_has_project_quota(inode->i_sb)) | |
2575 | fa.fsx_projid = (__u32)from_kprojid(&init_user_ns, | |
2576 | fi->i_projid); | |
2577 | ||
2578 | if (copy_to_user((struct fsxattr __user *)arg, &fa, sizeof(fa))) | |
2579 | return -EFAULT; | |
2580 | return 0; | |
2581 | } | |
2582 | ||
2583 | static int f2fs_ioc_fssetxattr(struct file *filp, unsigned long arg) | |
2584 | { | |
2585 | struct inode *inode = file_inode(filp); | |
2586 | struct f2fs_inode_info *fi = F2FS_I(inode); | |
2587 | struct fsxattr fa; | |
2588 | unsigned int flags; | |
2589 | int err; | |
2590 | ||
2591 | if (copy_from_user(&fa, (struct fsxattr __user *)arg, sizeof(fa))) | |
2592 | return -EFAULT; | |
2593 | ||
2594 | /* Make sure caller has proper permission */ | |
2595 | if (!inode_owner_or_capable(inode)) | |
2596 | return -EACCES; | |
2597 | ||
2598 | if (fa.fsx_xflags & ~F2FS_SUPPORTED_FS_XFLAGS) | |
2599 | return -EOPNOTSUPP; | |
2600 | ||
2601 | flags = f2fs_xflags_to_iflags(fa.fsx_xflags); | |
2602 | if (f2fs_mask_flags(inode->i_mode, flags) != flags) | |
2603 | return -EOPNOTSUPP; | |
2604 | ||
2605 | err = mnt_want_write_file(filp); | |
2606 | if (err) | |
2607 | return err; | |
2608 | ||
2609 | inode_lock(inode); | |
2610 | flags = (fi->i_flags & ~F2FS_FL_XFLAG_VISIBLE) | | |
2611 | (flags & F2FS_FL_XFLAG_VISIBLE); | |
2612 | err = __f2fs_ioc_setflags(inode, flags); | |
2613 | inode_unlock(inode); | |
2614 | mnt_drop_write_file(filp); | |
2615 | if (err) | |
2616 | return err; | |
2617 | ||
2618 | err = f2fs_ioc_setproject(filp, fa.fsx_projid); | |
2619 | if (err) | |
2620 | return err; | |
2621 | ||
2622 | return 0; | |
2623 | } | |
e066b83c | 2624 | |
52656e6c JK |
2625 | long f2fs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) |
2626 | { | |
2627 | switch (cmd) { | |
2628 | case F2FS_IOC_GETFLAGS: | |
2629 | return f2fs_ioc_getflags(filp, arg); | |
2630 | case F2FS_IOC_SETFLAGS: | |
2631 | return f2fs_ioc_setflags(filp, arg); | |
d49f3e89 CY |
2632 | case F2FS_IOC_GETVERSION: |
2633 | return f2fs_ioc_getversion(filp, arg); | |
88b88a66 JK |
2634 | case F2FS_IOC_START_ATOMIC_WRITE: |
2635 | return f2fs_ioc_start_atomic_write(filp); | |
2636 | case F2FS_IOC_COMMIT_ATOMIC_WRITE: | |
2637 | return f2fs_ioc_commit_atomic_write(filp); | |
02a1335f JK |
2638 | case F2FS_IOC_START_VOLATILE_WRITE: |
2639 | return f2fs_ioc_start_volatile_write(filp); | |
1e84371f JK |
2640 | case F2FS_IOC_RELEASE_VOLATILE_WRITE: |
2641 | return f2fs_ioc_release_volatile_write(filp); | |
2642 | case F2FS_IOC_ABORT_VOLATILE_WRITE: | |
2643 | return f2fs_ioc_abort_volatile_write(filp); | |
1abff93d JK |
2644 | case F2FS_IOC_SHUTDOWN: |
2645 | return f2fs_ioc_shutdown(filp, arg); | |
52656e6c JK |
2646 | case FITRIM: |
2647 | return f2fs_ioc_fitrim(filp, arg); | |
f424f664 JK |
2648 | case F2FS_IOC_SET_ENCRYPTION_POLICY: |
2649 | return f2fs_ioc_set_encryption_policy(filp, arg); | |
2650 | case F2FS_IOC_GET_ENCRYPTION_POLICY: | |
2651 | return f2fs_ioc_get_encryption_policy(filp, arg); | |
2652 | case F2FS_IOC_GET_ENCRYPTION_PWSALT: | |
2653 | return f2fs_ioc_get_encryption_pwsalt(filp, arg); | |
c1c1b583 CY |
2654 | case F2FS_IOC_GARBAGE_COLLECT: |
2655 | return f2fs_ioc_gc(filp, arg); | |
34dc77ad JK |
2656 | case F2FS_IOC_GARBAGE_COLLECT_RANGE: |
2657 | return f2fs_ioc_gc_range(filp, arg); | |
456b88e4 CY |
2658 | case F2FS_IOC_WRITE_CHECKPOINT: |
2659 | return f2fs_ioc_write_checkpoint(filp, arg); | |
d323d005 CY |
2660 | case F2FS_IOC_DEFRAGMENT: |
2661 | return f2fs_ioc_defragment(filp, arg); | |
4dd6f977 JK |
2662 | case F2FS_IOC_MOVE_RANGE: |
2663 | return f2fs_ioc_move_range(filp, arg); | |
e066b83c JK |
2664 | case F2FS_IOC_FLUSH_DEVICE: |
2665 | return f2fs_ioc_flush_device(filp, arg); | |
e65ef207 JK |
2666 | case F2FS_IOC_GET_FEATURES: |
2667 | return f2fs_ioc_get_features(filp, arg); | |
2c1d0305 CY |
2668 | case F2FS_IOC_FSGETXATTR: |
2669 | return f2fs_ioc_fsgetxattr(filp, arg); | |
2670 | case F2FS_IOC_FSSETXATTR: | |
2671 | return f2fs_ioc_fssetxattr(filp, arg); | |
fbfa2cc5 JK |
2672 | default: |
2673 | return -ENOTTY; | |
2674 | } | |
2675 | } | |
2676 | ||
fcc85a4d JK |
2677 | static ssize_t f2fs_file_write_iter(struct kiocb *iocb, struct iov_iter *from) |
2678 | { | |
b439b103 JK |
2679 | struct file *file = iocb->ki_filp; |
2680 | struct inode *inode = file_inode(file); | |
9dfa1baf | 2681 | struct blk_plug plug; |
b439b103 | 2682 | ssize_t ret; |
fcc85a4d | 2683 | |
b439b103 JK |
2684 | inode_lock(inode); |
2685 | ret = generic_write_checks(iocb, from); | |
2686 | if (ret > 0) { | |
dc91de78 | 2687 | int err; |
a7de6086 | 2688 | |
dc91de78 JK |
2689 | if (iov_iter_fault_in_readable(from, iov_iter_count(from))) |
2690 | set_inode_flag(inode, FI_NO_PREALLOC); | |
a7de6086 | 2691 | |
dc91de78 | 2692 | err = f2fs_preallocate_blocks(iocb, from); |
a7de6086 JK |
2693 | if (err) { |
2694 | inode_unlock(inode); | |
2695 | return err; | |
9dfa1baf | 2696 | } |
a7de6086 JK |
2697 | blk_start_plug(&plug); |
2698 | ret = __generic_file_write_iter(iocb, from); | |
2699 | blk_finish_plug(&plug); | |
dc91de78 | 2700 | clear_inode_flag(inode, FI_NO_PREALLOC); |
b0af6d49 CY |
2701 | |
2702 | if (ret > 0) | |
2703 | f2fs_update_iostat(F2FS_I_SB(inode), APP_WRITE_IO, ret); | |
b439b103 JK |
2704 | } |
2705 | inode_unlock(inode); | |
2706 | ||
e2592217 CH |
2707 | if (ret > 0) |
2708 | ret = generic_write_sync(iocb, ret); | |
b439b103 | 2709 | return ret; |
fcc85a4d JK |
2710 | } |
2711 | ||
e9750824 NJ |
2712 | #ifdef CONFIG_COMPAT |
2713 | long f2fs_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg) | |
2714 | { | |
2715 | switch (cmd) { | |
2716 | case F2FS_IOC32_GETFLAGS: | |
2717 | cmd = F2FS_IOC_GETFLAGS; | |
2718 | break; | |
2719 | case F2FS_IOC32_SETFLAGS: | |
2720 | cmd = F2FS_IOC_SETFLAGS; | |
2721 | break; | |
04ef4b62 CY |
2722 | case F2FS_IOC32_GETVERSION: |
2723 | cmd = F2FS_IOC_GETVERSION; | |
2724 | break; | |
2725 | case F2FS_IOC_START_ATOMIC_WRITE: | |
2726 | case F2FS_IOC_COMMIT_ATOMIC_WRITE: | |
2727 | case F2FS_IOC_START_VOLATILE_WRITE: | |
2728 | case F2FS_IOC_RELEASE_VOLATILE_WRITE: | |
2729 | case F2FS_IOC_ABORT_VOLATILE_WRITE: | |
2730 | case F2FS_IOC_SHUTDOWN: | |
2731 | case F2FS_IOC_SET_ENCRYPTION_POLICY: | |
2732 | case F2FS_IOC_GET_ENCRYPTION_PWSALT: | |
2733 | case F2FS_IOC_GET_ENCRYPTION_POLICY: | |
2734 | case F2FS_IOC_GARBAGE_COLLECT: | |
34dc77ad | 2735 | case F2FS_IOC_GARBAGE_COLLECT_RANGE: |
04ef4b62 CY |
2736 | case F2FS_IOC_WRITE_CHECKPOINT: |
2737 | case F2FS_IOC_DEFRAGMENT: | |
4dd6f977 | 2738 | case F2FS_IOC_MOVE_RANGE: |
e066b83c | 2739 | case F2FS_IOC_FLUSH_DEVICE: |
e65ef207 | 2740 | case F2FS_IOC_GET_FEATURES: |
2c1d0305 CY |
2741 | case F2FS_IOC_FSGETXATTR: |
2742 | case F2FS_IOC_FSSETXATTR: | |
4dd6f977 | 2743 | break; |
e9750824 NJ |
2744 | default: |
2745 | return -ENOIOCTLCMD; | |
2746 | } | |
2747 | return f2fs_ioctl(file, cmd, (unsigned long) compat_ptr(arg)); | |
2748 | } | |
2749 | #endif | |
2750 | ||
fbfa2cc5 | 2751 | const struct file_operations f2fs_file_operations = { |
267378d4 | 2752 | .llseek = f2fs_llseek, |
aad4f8bb | 2753 | .read_iter = generic_file_read_iter, |
fcc85a4d JK |
2754 | .write_iter = f2fs_file_write_iter, |
2755 | .open = f2fs_file_open, | |
12662234 | 2756 | .release = f2fs_release_file, |
fbfa2cc5 | 2757 | .mmap = f2fs_file_mmap, |
7a10f017 | 2758 | .flush = f2fs_file_flush, |
fbfa2cc5 JK |
2759 | .fsync = f2fs_sync_file, |
2760 | .fallocate = f2fs_fallocate, | |
2761 | .unlocked_ioctl = f2fs_ioctl, | |
e9750824 NJ |
2762 | #ifdef CONFIG_COMPAT |
2763 | .compat_ioctl = f2fs_compat_ioctl, | |
2764 | #endif | |
fbfa2cc5 | 2765 | .splice_read = generic_file_splice_read, |
8d020765 | 2766 | .splice_write = iter_file_splice_write, |
fbfa2cc5 | 2767 | }; |