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media: stv06xx: add missing descriptor sanity checks
[linux/fpc-iii.git] / fs / f2fs / sysfs.c
blobe79c86b8553a5f0986d71ebbe35a43e67c18f0e0
1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * f2fs sysfs interface
4 *
5 * Copyright (c) 2012 Samsung Electronics Co., Ltd.
6 * http://www.samsung.com/
7 * Copyright (c) 2017 Chao Yu <chao@kernel.org>
8 */
9 #include <linux/compiler.h>
10 #include <linux/proc_fs.h>
11 #include <linux/f2fs_fs.h>
12 #include <linux/seq_file.h>
13 #include <linux/unicode.h>
14
15 #include "f2fs.h"
16 #include "segment.h"
17 #include "gc.h"
18
19 static struct proc_dir_entry *f2fs_proc_root;
20
21 /* Sysfs support for f2fs */
22 enum {
23 GC_THREAD, /* struct f2fs_gc_thread */
24 SM_INFO, /* struct f2fs_sm_info */
25 DCC_INFO, /* struct discard_cmd_control */
26 NM_INFO, /* struct f2fs_nm_info */
27 F2FS_SBI, /* struct f2fs_sb_info */
28 #ifdef CONFIG_F2FS_FAULT_INJECTION
29 FAULT_INFO_RATE, /* struct f2fs_fault_info */
30 FAULT_INFO_TYPE, /* struct f2fs_fault_info */
31 #endif
32 RESERVED_BLOCKS, /* struct f2fs_sb_info */
33 };
34
35 struct f2fs_attr {
36 struct attribute attr;
37 ssize_t (*show)(struct f2fs_attr *, struct f2fs_sb_info *, char *);
38 ssize_t (*store)(struct f2fs_attr *, struct f2fs_sb_info *,
39 const char *, size_t);
40 int struct_type;
41 int offset;
42 int id;
43 };
44
45 static unsigned char *__struct_ptr(struct f2fs_sb_info *sbi, int struct_type)
46 {
47 if (struct_type == GC_THREAD)
48 return (unsigned char *)sbi->gc_thread;
49 else if (struct_type == SM_INFO)
50 return (unsigned char *)SM_I(sbi);
51 else if (struct_type == DCC_INFO)
52 return (unsigned char *)SM_I(sbi)->dcc_info;
53 else if (struct_type == NM_INFO)
54 return (unsigned char *)NM_I(sbi);
55 else if (struct_type == F2FS_SBI || struct_type == RESERVED_BLOCKS)
56 return (unsigned char *)sbi;
57 #ifdef CONFIG_F2FS_FAULT_INJECTION
58 else if (struct_type == FAULT_INFO_RATE ||
59 struct_type == FAULT_INFO_TYPE)
60 return (unsigned char *)&F2FS_OPTION(sbi).fault_info;
61 #endif
62 return NULL;
63 }
64
65 static ssize_t dirty_segments_show(struct f2fs_attr *a,
66 struct f2fs_sb_info *sbi, char *buf)
67 {
68 return snprintf(buf, PAGE_SIZE, "%llu\n",
69 (unsigned long long)(dirty_segments(sbi)));
70 }
71
72 static ssize_t unusable_show(struct f2fs_attr *a,
73 struct f2fs_sb_info *sbi, char *buf)
74 {
75 block_t unusable;
76
77 if (test_opt(sbi, DISABLE_CHECKPOINT))
78 unusable = sbi->unusable_block_count;
79 else
80 unusable = f2fs_get_unusable_blocks(sbi);
81 return snprintf(buf, PAGE_SIZE, "%llu\n",
82 (unsigned long long)unusable);
83 }
84
85 static ssize_t encoding_show(struct f2fs_attr *a,
86 struct f2fs_sb_info *sbi, char *buf)
87 {
88 #ifdef CONFIG_UNICODE
89 if (f2fs_sb_has_casefold(sbi))
90 return snprintf(buf, PAGE_SIZE, "%s (%d.%d.%d)\n",
91 sbi->s_encoding->charset,
92 (sbi->s_encoding->version >> 16) & 0xff,
93 (sbi->s_encoding->version >> 8) & 0xff,
94 sbi->s_encoding->version & 0xff);
95 #endif
96 return snprintf(buf, PAGE_SIZE, "(none)");
97 }
98
99 static ssize_t lifetime_write_kbytes_show(struct f2fs_attr *a,
100 struct f2fs_sb_info *sbi, char *buf)
101 {
102 struct super_block *sb = sbi->sb;
103
104 if (!sb->s_bdev->bd_part)
105 return snprintf(buf, PAGE_SIZE, "0\n");
106
107 return snprintf(buf, PAGE_SIZE, "%llu\n",
108 (unsigned long long)(sbi->kbytes_written +
109 BD_PART_WRITTEN(sbi)));
110 }
111
112 static ssize_t features_show(struct f2fs_attr *a,
113 struct f2fs_sb_info *sbi, char *buf)
114 {
115 struct super_block *sb = sbi->sb;
116 int len = 0;
117
118 if (!sb->s_bdev->bd_part)
119 return snprintf(buf, PAGE_SIZE, "0\n");
120
121 if (f2fs_sb_has_encrypt(sbi))
122 len += snprintf(buf, PAGE_SIZE - len, "%s",
123 "encryption");
124 if (f2fs_sb_has_blkzoned(sbi))
125 len += snprintf(buf + len, PAGE_SIZE - len, "%s%s",
126 len ? ", " : "", "blkzoned");
127 if (f2fs_sb_has_extra_attr(sbi))
128 len += snprintf(buf + len, PAGE_SIZE - len, "%s%s",
129 len ? ", " : "", "extra_attr");
130 if (f2fs_sb_has_project_quota(sbi))
131 len += snprintf(buf + len, PAGE_SIZE - len, "%s%s",
132 len ? ", " : "", "projquota");
133 if (f2fs_sb_has_inode_chksum(sbi))
134 len += snprintf(buf + len, PAGE_SIZE - len, "%s%s",
135 len ? ", " : "", "inode_checksum");
136 if (f2fs_sb_has_flexible_inline_xattr(sbi))
137 len += snprintf(buf + len, PAGE_SIZE - len, "%s%s",
138 len ? ", " : "", "flexible_inline_xattr");
139 if (f2fs_sb_has_quota_ino(sbi))
140 len += snprintf(buf + len, PAGE_SIZE - len, "%s%s",
141 len ? ", " : "", "quota_ino");
142 if (f2fs_sb_has_inode_crtime(sbi))
143 len += snprintf(buf + len, PAGE_SIZE - len, "%s%s",
144 len ? ", " : "", "inode_crtime");
145 if (f2fs_sb_has_lost_found(sbi))
146 len += snprintf(buf + len, PAGE_SIZE - len, "%s%s",
147 len ? ", " : "", "lost_found");
148 if (f2fs_sb_has_verity(sbi))
149 len += snprintf(buf + len, PAGE_SIZE - len, "%s%s",
150 len ? ", " : "", "verity");
151 if (f2fs_sb_has_sb_chksum(sbi))
152 len += snprintf(buf + len, PAGE_SIZE - len, "%s%s",
153 len ? ", " : "", "sb_checksum");
154 if (f2fs_sb_has_casefold(sbi))
155 len += snprintf(buf + len, PAGE_SIZE - len, "%s%s",
156 len ? ", " : "", "casefold");
157 len += snprintf(buf + len, PAGE_SIZE - len, "%s%s",
158 len ? ", " : "", "pin_file");
159 len += snprintf(buf + len, PAGE_SIZE - len, "\n");
160 return len;
161 }
162
163 static ssize_t current_reserved_blocks_show(struct f2fs_attr *a,
164 struct f2fs_sb_info *sbi, char *buf)
165 {
166 return snprintf(buf, PAGE_SIZE, "%u\n", sbi->current_reserved_blocks);
167 }
168
169 static ssize_t f2fs_sbi_show(struct f2fs_attr *a,
170 struct f2fs_sb_info *sbi, char *buf)
171 {
172 unsigned char *ptr = NULL;
173 unsigned int *ui;
174
175 ptr = __struct_ptr(sbi, a->struct_type);
176 if (!ptr)
177 return -EINVAL;
178
179 if (!strcmp(a->attr.name, "extension_list")) {
180 __u8 (*extlist)[F2FS_EXTENSION_LEN] =
181 sbi->raw_super->extension_list;
182 int cold_count = le32_to_cpu(sbi->raw_super->extension_count);
183 int hot_count = sbi->raw_super->hot_ext_count;
184 int len = 0, i;
185
186 len += snprintf(buf + len, PAGE_SIZE - len,
187 "cold file extension:\n");
188 for (i = 0; i < cold_count; i++)
189 len += snprintf(buf + len, PAGE_SIZE - len, "%s\n",
190 extlist[i]);
191
192 len += snprintf(buf + len, PAGE_SIZE - len,
193 "hot file extension:\n");
194 for (i = cold_count; i < cold_count + hot_count; i++)
195 len += snprintf(buf + len, PAGE_SIZE - len, "%s\n",
196 extlist[i]);
197 return len;
198 }
199
200 ui = (unsigned int *)(ptr + a->offset);
201
202 return snprintf(buf, PAGE_SIZE, "%u\n", *ui);
203 }
204
205 static ssize_t __sbi_store(struct f2fs_attr *a,
206 struct f2fs_sb_info *sbi,
207 const char *buf, size_t count)
208 {
209 unsigned char *ptr;
210 unsigned long t;
211 unsigned int *ui;
212 ssize_t ret;
213
214 ptr = __struct_ptr(sbi, a->struct_type);
215 if (!ptr)
216 return -EINVAL;
217
218 if (!strcmp(a->attr.name, "extension_list")) {
219 const char *name = strim((char *)buf);
220 bool set = true, hot;
221
222 if (!strncmp(name, "[h]", 3))
223 hot = true;
224 else if (!strncmp(name, "[c]", 3))
225 hot = false;
226 else
227 return -EINVAL;
228
229 name += 3;
230
231 if (*name == '!') {
232 name++;
233 set = false;
234 }
235
236 if (strlen(name) >= F2FS_EXTENSION_LEN)
237 return -EINVAL;
238
239 down_write(&sbi->sb_lock);
240
241 ret = f2fs_update_extension_list(sbi, name, hot, set);
242 if (ret)
243 goto out;
244
245 ret = f2fs_commit_super(sbi, false);
246 if (ret)
247 f2fs_update_extension_list(sbi, name, hot, !set);
248 out:
249 up_write(&sbi->sb_lock);
250 return ret ? ret : count;
251 }
252
253 ui = (unsigned int *)(ptr + a->offset);
254
255 ret = kstrtoul(skip_spaces(buf), 0, &t);
256 if (ret < 0)
257 return ret;
258 #ifdef CONFIG_F2FS_FAULT_INJECTION
259 if (a->struct_type == FAULT_INFO_TYPE && t >= (1 << FAULT_MAX))
260 return -EINVAL;
261 if (a->struct_type == FAULT_INFO_RATE && t >= UINT_MAX)
262 return -EINVAL;
263 #endif
264 if (a->struct_type == RESERVED_BLOCKS) {
265 spin_lock(&sbi->stat_lock);
266 if (t > (unsigned long)(sbi->user_block_count -
267 F2FS_OPTION(sbi).root_reserved_blocks)) {
268 spin_unlock(&sbi->stat_lock);
269 return -EINVAL;
270 }
271 *ui = t;
272 sbi->current_reserved_blocks = min(sbi->reserved_blocks,
273 sbi->user_block_count - valid_user_blocks(sbi));
274 spin_unlock(&sbi->stat_lock);
275 return count;
276 }
277
278 if (!strcmp(a->attr.name, "discard_granularity")) {
279 if (t == 0 || t > MAX_PLIST_NUM)
280 return -EINVAL;
281 if (t == *ui)
282 return count;
283 *ui = t;
284 return count;
285 }
286
287 if (!strcmp(a->attr.name, "migration_granularity")) {
288 if (t == 0 || t > sbi->segs_per_sec)
289 return -EINVAL;
290 }
291
292 if (!strcmp(a->attr.name, "trim_sections"))
293 return -EINVAL;
294
295 if (!strcmp(a->attr.name, "gc_urgent")) {
296 if (t >= 1) {
297 sbi->gc_mode = GC_URGENT;
298 if (sbi->gc_thread) {
299 sbi->gc_thread->gc_wake = 1;
300 wake_up_interruptible_all(
301 &sbi->gc_thread->gc_wait_queue_head);
302 wake_up_discard_thread(sbi, true);
303 }
304 } else {
305 sbi->gc_mode = GC_NORMAL;
306 }
307 return count;
308 }
309 if (!strcmp(a->attr.name, "gc_idle")) {
310 if (t == GC_IDLE_CB)
311 sbi->gc_mode = GC_IDLE_CB;
312 else if (t == GC_IDLE_GREEDY)
313 sbi->gc_mode = GC_IDLE_GREEDY;
314 else
315 sbi->gc_mode = GC_NORMAL;
316 return count;
317 }
318
319
320 if (!strcmp(a->attr.name, "iostat_enable")) {
321 sbi->iostat_enable = !!t;
322 if (!sbi->iostat_enable)
323 f2fs_reset_iostat(sbi);
324 return count;
325 }
326
327 *ui = (unsigned int)t;
328
329 return count;
330 }
331
332 static ssize_t f2fs_sbi_store(struct f2fs_attr *a,
333 struct f2fs_sb_info *sbi,
334 const char *buf, size_t count)
335 {
336 ssize_t ret;
337 bool gc_entry = (!strcmp(a->attr.name, "gc_urgent") ||
338 a->struct_type == GC_THREAD);
339
340 if (gc_entry) {
341 if (!down_read_trylock(&sbi->sb->s_umount))
342 return -EAGAIN;
343 }
344 ret = __sbi_store(a, sbi, buf, count);
345 if (gc_entry)
346 up_read(&sbi->sb->s_umount);
347
348 return ret;
349 }
350
351 static ssize_t f2fs_attr_show(struct kobject *kobj,
352 struct attribute *attr, char *buf)
353 {
354 struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info,
355 s_kobj);
356 struct f2fs_attr *a = container_of(attr, struct f2fs_attr, attr);
357
358 return a->show ? a->show(a, sbi, buf) : 0;
359 }
360
361 static ssize_t f2fs_attr_store(struct kobject *kobj, struct attribute *attr,
362 const char *buf, size_t len)
363 {
364 struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info,
365 s_kobj);
366 struct f2fs_attr *a = container_of(attr, struct f2fs_attr, attr);
367
368 return a->store ? a->store(a, sbi, buf, len) : 0;
369 }
370
371 static void f2fs_sb_release(struct kobject *kobj)
372 {
373 struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info,
374 s_kobj);
375 complete(&sbi->s_kobj_unregister);
376 }
377
378 enum feat_id {
379 FEAT_CRYPTO = 0,
380 FEAT_BLKZONED,
381 FEAT_ATOMIC_WRITE,
382 FEAT_EXTRA_ATTR,
383 FEAT_PROJECT_QUOTA,
384 FEAT_INODE_CHECKSUM,
385 FEAT_FLEXIBLE_INLINE_XATTR,
386 FEAT_QUOTA_INO,
387 FEAT_INODE_CRTIME,
388 FEAT_LOST_FOUND,
389 FEAT_VERITY,
390 FEAT_SB_CHECKSUM,
391 FEAT_CASEFOLD,
392 };
393
394 static ssize_t f2fs_feature_show(struct f2fs_attr *a,
395 struct f2fs_sb_info *sbi, char *buf)
396 {
397 switch (a->id) {
398 case FEAT_CRYPTO:
399 case FEAT_BLKZONED:
400 case FEAT_ATOMIC_WRITE:
401 case FEAT_EXTRA_ATTR:
402 case FEAT_PROJECT_QUOTA:
403 case FEAT_INODE_CHECKSUM:
404 case FEAT_FLEXIBLE_INLINE_XATTR:
405 case FEAT_QUOTA_INO:
406 case FEAT_INODE_CRTIME:
407 case FEAT_LOST_FOUND:
408 case FEAT_VERITY:
409 case FEAT_SB_CHECKSUM:
410 case FEAT_CASEFOLD:
411 return snprintf(buf, PAGE_SIZE, "supported\n");
412 }
413 return 0;
414 }
415
416 #define F2FS_ATTR_OFFSET(_struct_type, _name, _mode, _show, _store, _offset) \
417 static struct f2fs_attr f2fs_attr_##_name = { \
418 .attr = {.name = __stringify(_name), .mode = _mode }, \
419 .show = _show, \
420 .store = _store, \
421 .struct_type = _struct_type, \
422 .offset = _offset \
423 }
424
425 #define F2FS_RW_ATTR(struct_type, struct_name, name, elname) \
426 F2FS_ATTR_OFFSET(struct_type, name, 0644, \
427 f2fs_sbi_show, f2fs_sbi_store, \
428 offsetof(struct struct_name, elname))
429
430 #define F2FS_GENERAL_RO_ATTR(name) \
431 static struct f2fs_attr f2fs_attr_##name = __ATTR(name, 0444, name##_show, NULL)
432
433 #define F2FS_FEATURE_RO_ATTR(_name, _id) \
434 static struct f2fs_attr f2fs_attr_##_name = { \
435 .attr = {.name = __stringify(_name), .mode = 0444 }, \
436 .show = f2fs_feature_show, \
437 .id = _id, \
438 }
439
440 F2FS_RW_ATTR(GC_THREAD, f2fs_gc_kthread, gc_urgent_sleep_time,
441 urgent_sleep_time);
442 F2FS_RW_ATTR(GC_THREAD, f2fs_gc_kthread, gc_min_sleep_time, min_sleep_time);
443 F2FS_RW_ATTR(GC_THREAD, f2fs_gc_kthread, gc_max_sleep_time, max_sleep_time);
444 F2FS_RW_ATTR(GC_THREAD, f2fs_gc_kthread, gc_no_gc_sleep_time, no_gc_sleep_time);
445 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, gc_idle, gc_mode);
446 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, gc_urgent, gc_mode);
447 F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, reclaim_segments, rec_prefree_segments);
448 F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, main_blkaddr, main_blkaddr);
449 F2FS_RW_ATTR(DCC_INFO, discard_cmd_control, max_small_discards, max_discards);
450 F2FS_RW_ATTR(DCC_INFO, discard_cmd_control, discard_granularity, discard_granularity);
451 F2FS_RW_ATTR(RESERVED_BLOCKS, f2fs_sb_info, reserved_blocks, reserved_blocks);
452 F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, batched_trim_sections, trim_sections);
453 F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, ipu_policy, ipu_policy);
454 F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, min_ipu_util, min_ipu_util);
455 F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, min_fsync_blocks, min_fsync_blocks);
456 F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, min_seq_blocks, min_seq_blocks);
457 F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, min_hot_blocks, min_hot_blocks);
458 F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, min_ssr_sections, min_ssr_sections);
459 F2FS_RW_ATTR(NM_INFO, f2fs_nm_info, ram_thresh, ram_thresh);
460 F2FS_RW_ATTR(NM_INFO, f2fs_nm_info, ra_nid_pages, ra_nid_pages);
461 F2FS_RW_ATTR(NM_INFO, f2fs_nm_info, dirty_nats_ratio, dirty_nats_ratio);
462 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, max_victim_search, max_victim_search);
463 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, migration_granularity, migration_granularity);
464 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, dir_level, dir_level);
465 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, cp_interval, interval_time[CP_TIME]);
466 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, idle_interval, interval_time[REQ_TIME]);
467 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, discard_idle_interval,
468 interval_time[DISCARD_TIME]);
469 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, gc_idle_interval, interval_time[GC_TIME]);
470 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info,
471 umount_discard_timeout, interval_time[UMOUNT_DISCARD_TIMEOUT]);
472 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, iostat_enable, iostat_enable);
473 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, readdir_ra, readdir_ra);
474 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, gc_pin_file_thresh, gc_pin_file_threshold);
475 F2FS_RW_ATTR(F2FS_SBI, f2fs_super_block, extension_list, extension_list);
476 #ifdef CONFIG_F2FS_FAULT_INJECTION
477 F2FS_RW_ATTR(FAULT_INFO_RATE, f2fs_fault_info, inject_rate, inject_rate);
478 F2FS_RW_ATTR(FAULT_INFO_TYPE, f2fs_fault_info, inject_type, inject_type);
479 #endif
480 F2FS_GENERAL_RO_ATTR(dirty_segments);
481 F2FS_GENERAL_RO_ATTR(lifetime_write_kbytes);
482 F2FS_GENERAL_RO_ATTR(features);
483 F2FS_GENERAL_RO_ATTR(current_reserved_blocks);
484 F2FS_GENERAL_RO_ATTR(unusable);
485 F2FS_GENERAL_RO_ATTR(encoding);
486
487 #ifdef CONFIG_FS_ENCRYPTION
488 F2FS_FEATURE_RO_ATTR(encryption, FEAT_CRYPTO);
489 #endif
490 #ifdef CONFIG_BLK_DEV_ZONED
491 F2FS_FEATURE_RO_ATTR(block_zoned, FEAT_BLKZONED);
492 #endif
493 F2FS_FEATURE_RO_ATTR(atomic_write, FEAT_ATOMIC_WRITE);
494 F2FS_FEATURE_RO_ATTR(extra_attr, FEAT_EXTRA_ATTR);
495 F2FS_FEATURE_RO_ATTR(project_quota, FEAT_PROJECT_QUOTA);
496 F2FS_FEATURE_RO_ATTR(inode_checksum, FEAT_INODE_CHECKSUM);
497 F2FS_FEATURE_RO_ATTR(flexible_inline_xattr, FEAT_FLEXIBLE_INLINE_XATTR);
498 F2FS_FEATURE_RO_ATTR(quota_ino, FEAT_QUOTA_INO);
499 F2FS_FEATURE_RO_ATTR(inode_crtime, FEAT_INODE_CRTIME);
500 F2FS_FEATURE_RO_ATTR(lost_found, FEAT_LOST_FOUND);
501 #ifdef CONFIG_FS_VERITY
502 F2FS_FEATURE_RO_ATTR(verity, FEAT_VERITY);
503 #endif
504 F2FS_FEATURE_RO_ATTR(sb_checksum, FEAT_SB_CHECKSUM);
505 F2FS_FEATURE_RO_ATTR(casefold, FEAT_CASEFOLD);
506
507 #define ATTR_LIST(name) (&f2fs_attr_##name.attr)
508 static struct attribute *f2fs_attrs[] = {
509 ATTR_LIST(gc_urgent_sleep_time),
510 ATTR_LIST(gc_min_sleep_time),
511 ATTR_LIST(gc_max_sleep_time),
512 ATTR_LIST(gc_no_gc_sleep_time),
513 ATTR_LIST(gc_idle),
514 ATTR_LIST(gc_urgent),
515 ATTR_LIST(reclaim_segments),
516 ATTR_LIST(main_blkaddr),
517 ATTR_LIST(max_small_discards),
518 ATTR_LIST(discard_granularity),
519 ATTR_LIST(batched_trim_sections),
520 ATTR_LIST(ipu_policy),
521 ATTR_LIST(min_ipu_util),
522 ATTR_LIST(min_fsync_blocks),
523 ATTR_LIST(min_seq_blocks),
524 ATTR_LIST(min_hot_blocks),
525 ATTR_LIST(min_ssr_sections),
526 ATTR_LIST(max_victim_search),
527 ATTR_LIST(migration_granularity),
528 ATTR_LIST(dir_level),
529 ATTR_LIST(ram_thresh),
530 ATTR_LIST(ra_nid_pages),
531 ATTR_LIST(dirty_nats_ratio),
532 ATTR_LIST(cp_interval),
533 ATTR_LIST(idle_interval),
534 ATTR_LIST(discard_idle_interval),
535 ATTR_LIST(gc_idle_interval),
536 ATTR_LIST(umount_discard_timeout),
537 ATTR_LIST(iostat_enable),
538 ATTR_LIST(readdir_ra),
539 ATTR_LIST(gc_pin_file_thresh),
540 ATTR_LIST(extension_list),
541 #ifdef CONFIG_F2FS_FAULT_INJECTION
542 ATTR_LIST(inject_rate),
543 ATTR_LIST(inject_type),
544 #endif
545 ATTR_LIST(dirty_segments),
546 ATTR_LIST(unusable),
547 ATTR_LIST(lifetime_write_kbytes),
548 ATTR_LIST(features),
549 ATTR_LIST(reserved_blocks),
550 ATTR_LIST(current_reserved_blocks),
551 ATTR_LIST(encoding),
552 NULL,
553 };
554 ATTRIBUTE_GROUPS(f2fs);
555
556 static struct attribute *f2fs_feat_attrs[] = {
557 #ifdef CONFIG_FS_ENCRYPTION
558 ATTR_LIST(encryption),
559 #endif
560 #ifdef CONFIG_BLK_DEV_ZONED
561 ATTR_LIST(block_zoned),
562 #endif
563 ATTR_LIST(atomic_write),
564 ATTR_LIST(extra_attr),
565 ATTR_LIST(project_quota),
566 ATTR_LIST(inode_checksum),
567 ATTR_LIST(flexible_inline_xattr),
568 ATTR_LIST(quota_ino),
569 ATTR_LIST(inode_crtime),
570 ATTR_LIST(lost_found),
571 #ifdef CONFIG_FS_VERITY
572 ATTR_LIST(verity),
573 #endif
574 ATTR_LIST(sb_checksum),
575 ATTR_LIST(casefold),
576 NULL,
577 };
578 ATTRIBUTE_GROUPS(f2fs_feat);
579
580 static const struct sysfs_ops f2fs_attr_ops = {
581 .show = f2fs_attr_show,
582 .store = f2fs_attr_store,
583 };
584
585 static struct kobj_type f2fs_sb_ktype = {
586 .default_groups = f2fs_groups,
587 .sysfs_ops = &f2fs_attr_ops,
588 .release = f2fs_sb_release,
589 };
590
591 static struct kobj_type f2fs_ktype = {
592 .sysfs_ops = &f2fs_attr_ops,
593 };
594
595 static struct kset f2fs_kset = {
596 .kobj = {.ktype = &f2fs_ktype},
597 };
598
599 static struct kobj_type f2fs_feat_ktype = {
600 .default_groups = f2fs_feat_groups,
601 .sysfs_ops = &f2fs_attr_ops,
602 };
603
604 static struct kobject f2fs_feat = {
605 .kset = &f2fs_kset,
606 };
607
608 static int __maybe_unused segment_info_seq_show(struct seq_file *seq,
609 void *offset)
610 {
611 struct super_block *sb = seq->private;
612 struct f2fs_sb_info *sbi = F2FS_SB(sb);
613 unsigned int total_segs =
614 le32_to_cpu(sbi->raw_super->segment_count_main);
615 int i;
616
617 seq_puts(seq, "format: segment_type|valid_blocks\n"
618 "segment_type(0:HD, 1:WD, 2:CD, 3:HN, 4:WN, 5:CN)\n");
619
620 for (i = 0; i < total_segs; i++) {
621 struct seg_entry *se = get_seg_entry(sbi, i);
622
623 if ((i % 10) == 0)
624 seq_printf(seq, "%-10d", i);
625 seq_printf(seq, "%d|%-3u", se->type, se->valid_blocks);
626 if ((i % 10) == 9 || i == (total_segs - 1))
627 seq_putc(seq, '\n');
628 else
629 seq_putc(seq, ' ');
630 }
631
632 return 0;
633 }
634
635 static int __maybe_unused segment_bits_seq_show(struct seq_file *seq,
636 void *offset)
637 {
638 struct super_block *sb = seq->private;
639 struct f2fs_sb_info *sbi = F2FS_SB(sb);
640 unsigned int total_segs =
641 le32_to_cpu(sbi->raw_super->segment_count_main);
642 int i, j;
643
644 seq_puts(seq, "format: segment_type|valid_blocks|bitmaps\n"
645 "segment_type(0:HD, 1:WD, 2:CD, 3:HN, 4:WN, 5:CN)\n");
646
647 for (i = 0; i < total_segs; i++) {
648 struct seg_entry *se = get_seg_entry(sbi, i);
649
650 seq_printf(seq, "%-10d", i);
651 seq_printf(seq, "%d|%-3u|", se->type, se->valid_blocks);
652 for (j = 0; j < SIT_VBLOCK_MAP_SIZE; j++)
653 seq_printf(seq, " %.2x", se->cur_valid_map[j]);
654 seq_putc(seq, '\n');
655 }
656 return 0;
657 }
658
659 static int __maybe_unused iostat_info_seq_show(struct seq_file *seq,
660 void *offset)
661 {
662 struct super_block *sb = seq->private;
663 struct f2fs_sb_info *sbi = F2FS_SB(sb);
664 time64_t now = ktime_get_real_seconds();
665
666 if (!sbi->iostat_enable)
667 return 0;
668
669 seq_printf(seq, "time: %-16llu\n", now);
670
671 /* print app IOs */
672 seq_printf(seq, "app buffered: %-16llu\n",
673 sbi->write_iostat[APP_BUFFERED_IO]);
674 seq_printf(seq, "app direct: %-16llu\n",
675 sbi->write_iostat[APP_DIRECT_IO]);
676 seq_printf(seq, "app mapped: %-16llu\n",
677 sbi->write_iostat[APP_MAPPED_IO]);
678
679 /* print fs IOs */
680 seq_printf(seq, "fs data: %-16llu\n",
681 sbi->write_iostat[FS_DATA_IO]);
682 seq_printf(seq, "fs node: %-16llu\n",
683 sbi->write_iostat[FS_NODE_IO]);
684 seq_printf(seq, "fs meta: %-16llu\n",
685 sbi->write_iostat[FS_META_IO]);
686 seq_printf(seq, "fs gc data: %-16llu\n",
687 sbi->write_iostat[FS_GC_DATA_IO]);
688 seq_printf(seq, "fs gc node: %-16llu\n",
689 sbi->write_iostat[FS_GC_NODE_IO]);
690 seq_printf(seq, "fs cp data: %-16llu\n",
691 sbi->write_iostat[FS_CP_DATA_IO]);
692 seq_printf(seq, "fs cp node: %-16llu\n",
693 sbi->write_iostat[FS_CP_NODE_IO]);
694 seq_printf(seq, "fs cp meta: %-16llu\n",
695 sbi->write_iostat[FS_CP_META_IO]);
696 seq_printf(seq, "fs discard: %-16llu\n",
697 sbi->write_iostat[FS_DISCARD]);
698
699 return 0;
700 }
701
702 static int __maybe_unused victim_bits_seq_show(struct seq_file *seq,
703 void *offset)
704 {
705 struct super_block *sb = seq->private;
706 struct f2fs_sb_info *sbi = F2FS_SB(sb);
707 struct dirty_seglist_info *dirty_i = DIRTY_I(sbi);
708 int i;
709
710 seq_puts(seq, "format: victim_secmap bitmaps\n");
711
712 for (i = 0; i < MAIN_SECS(sbi); i++) {
713 if ((i % 10) == 0)
714 seq_printf(seq, "%-10d", i);
715 seq_printf(seq, "%d", test_bit(i, dirty_i->victim_secmap) ? 1 : 0);
716 if ((i % 10) == 9 || i == (MAIN_SECS(sbi) - 1))
717 seq_putc(seq, '\n');
718 else
719 seq_putc(seq, ' ');
720 }
721 return 0;
722 }
723
724 int __init f2fs_init_sysfs(void)
725 {
726 int ret;
727
728 kobject_set_name(&f2fs_kset.kobj, "f2fs");
729 f2fs_kset.kobj.parent = fs_kobj;
730 ret = kset_register(&f2fs_kset);
731 if (ret)
732 return ret;
733
734 ret = kobject_init_and_add(&f2fs_feat, &f2fs_feat_ktype,
735 NULL, "features");
736 if (ret) {
737 kobject_put(&f2fs_feat);
738 kset_unregister(&f2fs_kset);
739 } else {
740 f2fs_proc_root = proc_mkdir("fs/f2fs", NULL);
741 }
742 return ret;
743 }
744
745 void f2fs_exit_sysfs(void)
746 {
747 kobject_put(&f2fs_feat);
748 kset_unregister(&f2fs_kset);
749 remove_proc_entry("fs/f2fs", NULL);
750 f2fs_proc_root = NULL;
751 }
752
753 int f2fs_register_sysfs(struct f2fs_sb_info *sbi)
754 {
755 struct super_block *sb = sbi->sb;
756 int err;
757
758 sbi->s_kobj.kset = &f2fs_kset;
759 init_completion(&sbi->s_kobj_unregister);
760 err = kobject_init_and_add(&sbi->s_kobj, &f2fs_sb_ktype, NULL,
761 "%s", sb->s_id);
762 if (err) {
763 kobject_put(&sbi->s_kobj);
764 wait_for_completion(&sbi->s_kobj_unregister);
765 return err;
766 }
767
768 if (f2fs_proc_root)
769 sbi->s_proc = proc_mkdir(sb->s_id, f2fs_proc_root);
770
771 if (sbi->s_proc) {
772 proc_create_single_data("segment_info", S_IRUGO, sbi->s_proc,
773 segment_info_seq_show, sb);
774 proc_create_single_data("segment_bits", S_IRUGO, sbi->s_proc,
775 segment_bits_seq_show, sb);
776 proc_create_single_data("iostat_info", S_IRUGO, sbi->s_proc,
777 iostat_info_seq_show, sb);
778 proc_create_single_data("victim_bits", S_IRUGO, sbi->s_proc,
779 victim_bits_seq_show, sb);
780 }
781 return 0;
782 }
783
784 void f2fs_unregister_sysfs(struct f2fs_sb_info *sbi)
785 {
786 if (sbi->s_proc) {
787 remove_proc_entry("iostat_info", sbi->s_proc);
788 remove_proc_entry("segment_info", sbi->s_proc);
789 remove_proc_entry("segment_bits", sbi->s_proc);
790 remove_proc_entry("victim_bits", sbi->s_proc);
791 remove_proc_entry(sbi->sb->s_id, f2fs_proc_root);
792 }
793 kobject_del(&sbi->s_kobj);
794 kobject_put(&sbi->s_kobj);
795 }
Linux with added FPC-III support