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