fs/f2fs/sysfs.c

   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
  14 #include "f2fs.h"
  15 #include "segment.h"
  16 #include "gc.h"
  17
  18 static struct proc_dir_entry *f2fs_proc_root;
  19
  20 /* Sysfs support for f2fs */
  21 enum {
  22         GC_THREAD,      /* struct f2fs_gc_thread */
  23         SM_INFO,        /* struct f2fs_sm_info */
  24         DCC_INFO,       /* struct discard_cmd_control */
  25         NM_INFO,        /* struct f2fs_nm_info */
  26         F2FS_SBI,       /* struct f2fs_sb_info */
  27 #ifdef CONFIG_F2FS_FAULT_INJECTION
  28         FAULT_INFO_RATE,        /* struct f2fs_fault_info */
  29         FAULT_INFO_TYPE,        /* struct f2fs_fault_info */
  30 #endif
  31         RESERVED_BLOCKS,        /* struct f2fs_sb_info */
  32 };
  33
  34 struct f2fs_attr {
  35         struct attribute attr;
  36         ssize_t (*show)(struct f2fs_attr *, struct f2fs_sb_info *, char *);
  37         ssize_t (*store)(struct f2fs_attr *, struct f2fs_sb_info *,
  38                          const char *, size_t);
  39         int struct_type;
  40         int offset;
  41         int id;
  42 };
  43
  44 static unsigned char *__struct_ptr(struct f2fs_sb_info *sbi, int struct_type)
  45 {
  46         if (struct_type == GC_THREAD)
  47                 return (unsigned char *)sbi->gc_thread;
  48         else if (struct_type == SM_INFO)
  49                 return (unsigned char *)SM_I(sbi);
  50         else if (struct_type == DCC_INFO)
  51                 return (unsigned char *)SM_I(sbi)->dcc_info;
  52         else if (struct_type == NM_INFO)
  53                 return (unsigned char *)NM_I(sbi);
  54         else if (struct_type == F2FS_SBI || struct_type == RESERVED_BLOCKS)
  55                 return (unsigned char *)sbi;
  56 #ifdef CONFIG_F2FS_FAULT_INJECTION
  57         else if (struct_type == FAULT_INFO_RATE ||
  58                                         struct_type == FAULT_INFO_TYPE)
  59                 return (unsigned char *)&F2FS_OPTION(sbi).fault_info;
  60 #endif
  61         return NULL;
  62 }
  63
  64 static ssize_t dirty_segments_show(struct f2fs_attr *a,
  65                 struct f2fs_sb_info *sbi, char *buf)
  66 {
  67         return snprintf(buf, PAGE_SIZE, "%llu\n",
  68                 (unsigned long long)(dirty_segments(sbi)));
  69 }
  70
  71 static ssize_t lifetime_write_kbytes_show(struct f2fs_attr *a,
  72                 struct f2fs_sb_info *sbi, char *buf)
  73 {
  74         struct super_block *sb = sbi->sb;
  75
  76         if (!sb->s_bdev->bd_part)
  77                 return snprintf(buf, PAGE_SIZE, "0\n");
  78
  79         return snprintf(buf, PAGE_SIZE, "%llu\n",
  80                 (unsigned long long)(sbi->kbytes_written +
  81                         BD_PART_WRITTEN(sbi)));
  82 }
  83
  84 static ssize_t features_show(struct f2fs_attr *a,
  85                 struct f2fs_sb_info *sbi, char *buf)
  86 {
  87         struct super_block *sb = sbi->sb;
  88         int len = 0;
  89
  90         if (!sb->s_bdev->bd_part)
  91                 return snprintf(buf, PAGE_SIZE, "0\n");
  92
  93         if (f2fs_sb_has_encrypt(sb))
  94                 len += snprintf(buf, PAGE_SIZE - len, "%s",
  95                                                 "encryption");
  96         if (f2fs_sb_has_blkzoned(sb))
  97                 len += snprintf(buf + len, PAGE_SIZE - len, "%s%s",
  98                                 len ? ", " : "", "blkzoned");
  99         if (f2fs_sb_has_extra_attr(sb))
 100                 len += snprintf(buf + len, PAGE_SIZE - len, "%s%s",
 101                                 len ? ", " : "", "extra_attr");
 102         if (f2fs_sb_has_project_quota(sb))
 103                 len += snprintf(buf + len, PAGE_SIZE - len, "%s%s",
 104                                 len ? ", " : "", "projquota");
 105         if (f2fs_sb_has_inode_chksum(sb))
 106                 len += snprintf(buf + len, PAGE_SIZE - len, "%s%s",
 107                                 len ? ", " : "", "inode_checksum");
 108         if (f2fs_sb_has_flexible_inline_xattr(sb))
 109                 len += snprintf(buf + len, PAGE_SIZE - len, "%s%s",
 110                                 len ? ", " : "", "flexible_inline_xattr");
 111         if (f2fs_sb_has_quota_ino(sb))
 112                 len += snprintf(buf + len, PAGE_SIZE - len, "%s%s",
 113                                 len ? ", " : "", "quota_ino");
 114         if (f2fs_sb_has_inode_crtime(sb))
 115                 len += snprintf(buf + len, PAGE_SIZE - len, "%s%s",
 116                                 len ? ", " : "", "inode_crtime");
 117         if (f2fs_sb_has_lost_found(sb))
 118                 len += snprintf(buf + len, PAGE_SIZE - len, "%s%s",
 119                                 len ? ", " : "", "lost_found");
 120         if (f2fs_sb_has_sb_chksum(sb))
 121                 len += snprintf(buf + len, PAGE_SIZE - len, "%s%s",
 122                                 len ? ", " : "", "sb_checksum");
 123         len += snprintf(buf + len, PAGE_SIZE - len, "\n");
 124         return len;
 125 }
 126
 127 static ssize_t current_reserved_blocks_show(struct f2fs_attr *a,
 128                                         struct f2fs_sb_info *sbi, char *buf)
 129 {
 130         return snprintf(buf, PAGE_SIZE, "%u\n", sbi->current_reserved_blocks);
 131 }
 132
 133 static ssize_t f2fs_sbi_show(struct f2fs_attr *a,
 134                         struct f2fs_sb_info *sbi, char *buf)
 135 {
 136         unsigned char *ptr = NULL;
 137         unsigned int *ui;
 138
 139         ptr = __struct_ptr(sbi, a->struct_type);
 140         if (!ptr)
 141                 return -EINVAL;
 142
 143         if (!strcmp(a->attr.name, "extension_list")) {
 144                 __u8 (*extlist)[F2FS_EXTENSION_LEN] =
 145                                         sbi->raw_super->extension_list;
 146                 int cold_count = le32_to_cpu(sbi->raw_super->extension_count);
 147                 int hot_count = sbi->raw_super->hot_ext_count;
 148                 int len = 0, i;
 149
 150                 len += snprintf(buf + len, PAGE_SIZE - len,
 151                                                 "cold file extension:\n");
 152                 for (i = 0; i < cold_count; i++)
 153                         len += snprintf(buf + len, PAGE_SIZE - len, "%s\n",
 154                                                                 extlist[i]);
 155
 156                 len += snprintf(buf + len, PAGE_SIZE - len,
 157                                                 "hot file extension:\n");
 158                 for (i = cold_count; i < cold_count + hot_count; i++)
 159                         len += snprintf(buf + len, PAGE_SIZE - len, "%s\n",
 160                                                                 extlist[i]);
 161                 return len;
 162         }
 163
 164         ui = (unsigned int *)(ptr + a->offset);
 165
 166         return snprintf(buf, PAGE_SIZE, "%u\n", *ui);
 167 }
 168
 169 static ssize_t __sbi_store(struct f2fs_attr *a,
 170                         struct f2fs_sb_info *sbi,
 171                         const char *buf, size_t count)
 172 {
 173         unsigned char *ptr;
 174         unsigned long t;
 175         unsigned int *ui;
 176         ssize_t ret;
 177
 178         ptr = __struct_ptr(sbi, a->struct_type);
 179         if (!ptr)
 180                 return -EINVAL;
 181
 182         if (!strcmp(a->attr.name, "extension_list")) {
 183                 const char *name = strim((char *)buf);
 184                 bool set = true, hot;
 185
 186                 if (!strncmp(name, "[h]", 3))
 187                         hot = true;
 188                 else if (!strncmp(name, "[c]", 3))
 189                         hot = false;
 190                 else
 191                         return -EINVAL;
 192
 193                 name += 3;
 194
 195                 if (*name == '!') {
 196                         name++;
 197                         set = false;
 198                 }
 199
 200                 if (strlen(name) >= F2FS_EXTENSION_LEN)
 201                         return -EINVAL;
 202
 203                 down_write(&sbi->sb_lock);
 204
 205                 ret = f2fs_update_extension_list(sbi, name, hot, set);
 206                 if (ret)
 207                         goto out;
 208
 209                 ret = f2fs_commit_super(sbi, false);
 210                 if (ret)
 211                         f2fs_update_extension_list(sbi, name, hot, !set);
 212 out:
 213                 up_write(&sbi->sb_lock);
 214                 return ret ? ret : count;
 215         }
 216
 217         ui = (unsigned int *)(ptr + a->offset);
 218
 219         ret = kstrtoul(skip_spaces(buf), 0, &t);
 220         if (ret < 0)
 221                 return ret;
 222 #ifdef CONFIG_F2FS_FAULT_INJECTION
 223         if (a->struct_type == FAULT_INFO_TYPE && t >= (1 << FAULT_MAX))
 224                 return -EINVAL;
 225 #endif
 226         if (a->struct_type == RESERVED_BLOCKS) {
 227                 spin_lock(&sbi->stat_lock);
 228                 if (t > (unsigned long)(sbi->user_block_count -
 229                                 F2FS_OPTION(sbi).root_reserved_blocks)) {
 230                         spin_unlock(&sbi->stat_lock);
 231                         return -EINVAL;
 232                 }
 233                 *ui = t;
 234                 sbi->current_reserved_blocks = min(sbi->reserved_blocks,
 235                                 sbi->user_block_count - valid_user_blocks(sbi));
 236                 spin_unlock(&sbi->stat_lock);
 237                 return count;
 238         }
 239
 240         if (!strcmp(a->attr.name, "discard_granularity")) {
 241                 if (t == 0 || t > MAX_PLIST_NUM)
 242                         return -EINVAL;
 243                 if (t == *ui)
 244                         return count;
 245                 *ui = t;
 246                 return count;
 247         }
 248
 249         if (!strcmp(a->attr.name, "trim_sections"))
 250                 return -EINVAL;
 251
 252         if (!strcmp(a->attr.name, "gc_urgent")) {
 253                 if (t >= 1) {
 254                         sbi->gc_mode = GC_URGENT;
 255                         if (sbi->gc_thread) {
 256                                 sbi->gc_thread->gc_wake = 1;
 257                                 wake_up_interruptible_all(
 258                                         &sbi->gc_thread->gc_wait_queue_head);
 259                                 wake_up_discard_thread(sbi, true);
 260                         }
 261                 } else {
 262                         sbi->gc_mode = GC_NORMAL;
 263                 }
 264                 return count;
 265         }
 266         if (!strcmp(a->attr.name, "gc_idle")) {
 267                 if (t == GC_IDLE_CB)
 268                         sbi->gc_mode = GC_IDLE_CB;
 269                 else if (t == GC_IDLE_GREEDY)
 270                         sbi->gc_mode = GC_IDLE_GREEDY;
 271                 else
 272                         sbi->gc_mode = GC_NORMAL;
 273                 return count;
 274         }
 275
 276         *ui = t;
 277
 278         if (!strcmp(a->attr.name, "iostat_enable") && *ui == 0)
 279                 f2fs_reset_iostat(sbi);
 280         return count;
 281 }
 282
 283 static ssize_t f2fs_sbi_store(struct f2fs_attr *a,
 284                         struct f2fs_sb_info *sbi,
 285                         const char *buf, size_t count)
 286 {
 287         ssize_t ret;
 288         bool gc_entry = (!strcmp(a->attr.name, "gc_urgent") ||
 289                                         a->struct_type == GC_THREAD);
 290
 291         if (gc_entry) {
 292                 if (!down_read_trylock(&sbi->sb->s_umount))
 293                         return -EAGAIN;
 294         }
 295         ret = __sbi_store(a, sbi, buf, count);
 296         if (gc_entry)
 297                 up_read(&sbi->sb->s_umount);
 298
 299         return ret;
 300 }
 301
 302 static ssize_t f2fs_attr_show(struct kobject *kobj,
 303                                 struct attribute *attr, char *buf)
 304 {
 305         struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info,
 306                                                                 s_kobj);
 307         struct f2fs_attr *a = container_of(attr, struct f2fs_attr, attr);
 308
 309         return a->show ? a->show(a, sbi, buf) : 0;
 310 }
 311
 312 static ssize_t f2fs_attr_store(struct kobject *kobj, struct attribute *attr,
 313                                                 const char *buf, size_t len)
 314 {
 315         struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info,
 316                                                                         s_kobj);
 317         struct f2fs_attr *a = container_of(attr, struct f2fs_attr, attr);
 318
 319         return a->store ? a->store(a, sbi, buf, len) : 0;
 320 }
 321
 322 static void f2fs_sb_release(struct kobject *kobj)
 323 {
 324         struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info,
 325                                                                 s_kobj);
 326         complete(&sbi->s_kobj_unregister);
 327 }
 328
 329 enum feat_id {
 330         FEAT_CRYPTO = 0,
 331         FEAT_BLKZONED,
 332         FEAT_ATOMIC_WRITE,
 333         FEAT_EXTRA_ATTR,
 334         FEAT_PROJECT_QUOTA,
 335         FEAT_INODE_CHECKSUM,
 336         FEAT_FLEXIBLE_INLINE_XATTR,
 337         FEAT_QUOTA_INO,
 338         FEAT_INODE_CRTIME,
 339         FEAT_LOST_FOUND,
 340         FEAT_SB_CHECKSUM,
 341 };
 342
 343 static ssize_t f2fs_feature_show(struct f2fs_attr *a,
 344                 struct f2fs_sb_info *sbi, char *buf)
 345 {
 346         switch (a->id) {
 347         case FEAT_CRYPTO:
 348         case FEAT_BLKZONED:
 349         case FEAT_ATOMIC_WRITE:
 350         case FEAT_EXTRA_ATTR:
 351         case FEAT_PROJECT_QUOTA:
 352         case FEAT_INODE_CHECKSUM:
 353         case FEAT_FLEXIBLE_INLINE_XATTR:
 354         case FEAT_QUOTA_INO:
 355         case FEAT_INODE_CRTIME:
 356         case FEAT_LOST_FOUND:
 357         case FEAT_SB_CHECKSUM:
 358                 return snprintf(buf, PAGE_SIZE, "supported\n");
 359         }
 360         return 0;
 361 }
 362
 363 #define F2FS_ATTR_OFFSET(_struct_type, _name, _mode, _show, _store, _offset) \
 364 static struct f2fs_attr f2fs_attr_##_name = {                   \
 365         .attr = {.name = __stringify(_name), .mode = _mode },   \
 366         .show   = _show,                                        \
 367         .store  = _store,                                       \
 368         .struct_type = _struct_type,                            \
 369         .offset = _offset                                       \
 370 }
 371
 372 #define F2FS_RW_ATTR(struct_type, struct_name, name, elname)    \
 373         F2FS_ATTR_OFFSET(struct_type, name, 0644,               \
 374                 f2fs_sbi_show, f2fs_sbi_store,                  \
 375                 offsetof(struct struct_name, elname))
 376
 377 #define F2FS_GENERAL_RO_ATTR(name) \
 378 static struct f2fs_attr f2fs_attr_##name = __ATTR(name, 0444, name##_show, NULL)
 379
 380 #define F2FS_FEATURE_RO_ATTR(_name, _id)                        \
 381 static struct f2fs_attr f2fs_attr_##_name = {                   \
 382         .attr = {.name = __stringify(_name), .mode = 0444 },    \
 383         .show   = f2fs_feature_show,                            \
 384         .id     = _id,                                          \
 385 }
 386
 387 F2FS_RW_ATTR(GC_THREAD, f2fs_gc_kthread, gc_urgent_sleep_time,
 388                                                         urgent_sleep_time);
 389 F2FS_RW_ATTR(GC_THREAD, f2fs_gc_kthread, gc_min_sleep_time, min_sleep_time);
 390 F2FS_RW_ATTR(GC_THREAD, f2fs_gc_kthread, gc_max_sleep_time, max_sleep_time);
 391 F2FS_RW_ATTR(GC_THREAD, f2fs_gc_kthread, gc_no_gc_sleep_time, no_gc_sleep_time);
 392 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, gc_idle, gc_mode);
 393 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, gc_urgent, gc_mode);
 394 F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, reclaim_segments, rec_prefree_segments);
 395 F2FS_RW_ATTR(DCC_INFO, discard_cmd_control, max_small_discards, max_discards);
 396 F2FS_RW_ATTR(DCC_INFO, discard_cmd_control, discard_granularity, discard_granularity);
 397 F2FS_RW_ATTR(RESERVED_BLOCKS, f2fs_sb_info, reserved_blocks, reserved_blocks);
 398 F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, batched_trim_sections, trim_sections);
 399 F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, ipu_policy, ipu_policy);
 400 F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, min_ipu_util, min_ipu_util);
 401 F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, min_fsync_blocks, min_fsync_blocks);
 402 F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, min_seq_blocks, min_seq_blocks);
 403 F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, min_hot_blocks, min_hot_blocks);
 404 F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, min_ssr_sections, min_ssr_sections);
 405 F2FS_RW_ATTR(NM_INFO, f2fs_nm_info, ram_thresh, ram_thresh);
 406 F2FS_RW_ATTR(NM_INFO, f2fs_nm_info, ra_nid_pages, ra_nid_pages);
 407 F2FS_RW_ATTR(NM_INFO, f2fs_nm_info, dirty_nats_ratio, dirty_nats_ratio);
 408 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, max_victim_search, max_victim_search);
 409 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, dir_level, dir_level);
 410 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, cp_interval, interval_time[CP_TIME]);
 411 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, idle_interval, interval_time[REQ_TIME]);
 412 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, discard_idle_interval,
 413                                         interval_time[DISCARD_TIME]);
 414 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, gc_idle_interval, interval_time[GC_TIME]);
 415 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, iostat_enable, iostat_enable);
 416 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, readdir_ra, readdir_ra);
 417 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, gc_pin_file_thresh, gc_pin_file_threshold);
 418 F2FS_RW_ATTR(F2FS_SBI, f2fs_super_block, extension_list, extension_list);
 419 #ifdef CONFIG_F2FS_FAULT_INJECTION
 420 F2FS_RW_ATTR(FAULT_INFO_RATE, f2fs_fault_info, inject_rate, inject_rate);
 421 F2FS_RW_ATTR(FAULT_INFO_TYPE, f2fs_fault_info, inject_type, inject_type);
 422 #endif
 423 F2FS_GENERAL_RO_ATTR(dirty_segments);
 424 F2FS_GENERAL_RO_ATTR(lifetime_write_kbytes);
 425 F2FS_GENERAL_RO_ATTR(features);
 426 F2FS_GENERAL_RO_ATTR(current_reserved_blocks);
 427
 428 #ifdef CONFIG_F2FS_FS_ENCRYPTION
 429 F2FS_FEATURE_RO_ATTR(encryption, FEAT_CRYPTO);
 430 #endif
 431 #ifdef CONFIG_BLK_DEV_ZONED
 432 F2FS_FEATURE_RO_ATTR(block_zoned, FEAT_BLKZONED);
 433 #endif
 434 F2FS_FEATURE_RO_ATTR(atomic_write, FEAT_ATOMIC_WRITE);
 435 F2FS_FEATURE_RO_ATTR(extra_attr, FEAT_EXTRA_ATTR);
 436 F2FS_FEATURE_RO_ATTR(project_quota, FEAT_PROJECT_QUOTA);
 437 F2FS_FEATURE_RO_ATTR(inode_checksum, FEAT_INODE_CHECKSUM);
 438 F2FS_FEATURE_RO_ATTR(flexible_inline_xattr, FEAT_FLEXIBLE_INLINE_XATTR);
 439 F2FS_FEATURE_RO_ATTR(quota_ino, FEAT_QUOTA_INO);
 440 F2FS_FEATURE_RO_ATTR(inode_crtime, FEAT_INODE_CRTIME);
 441 F2FS_FEATURE_RO_ATTR(lost_found, FEAT_LOST_FOUND);
 442 F2FS_FEATURE_RO_ATTR(sb_checksum, FEAT_SB_CHECKSUM);
 443
 444 #define ATTR_LIST(name) (&f2fs_attr_##name.attr)
 445 static struct attribute *f2fs_attrs[] = {
 446         ATTR_LIST(gc_urgent_sleep_time),
 447         ATTR_LIST(gc_min_sleep_time),
 448         ATTR_LIST(gc_max_sleep_time),
 449         ATTR_LIST(gc_no_gc_sleep_time),
 450         ATTR_LIST(gc_idle),
 451         ATTR_LIST(gc_urgent),
 452         ATTR_LIST(reclaim_segments),
 453         ATTR_LIST(max_small_discards),
 454         ATTR_LIST(discard_granularity),
 455         ATTR_LIST(batched_trim_sections),
 456         ATTR_LIST(ipu_policy),
 457         ATTR_LIST(min_ipu_util),
 458         ATTR_LIST(min_fsync_blocks),
 459         ATTR_LIST(min_seq_blocks),
 460         ATTR_LIST(min_hot_blocks),
 461         ATTR_LIST(min_ssr_sections),
 462         ATTR_LIST(max_victim_search),
 463         ATTR_LIST(dir_level),
 464         ATTR_LIST(ram_thresh),
 465         ATTR_LIST(ra_nid_pages),
 466         ATTR_LIST(dirty_nats_ratio),
 467         ATTR_LIST(cp_interval),
 468         ATTR_LIST(idle_interval),
 469         ATTR_LIST(discard_idle_interval),
 470         ATTR_LIST(gc_idle_interval),
 471         ATTR_LIST(iostat_enable),
 472         ATTR_LIST(readdir_ra),
 473         ATTR_LIST(gc_pin_file_thresh),
 474         ATTR_LIST(extension_list),
 475 #ifdef CONFIG_F2FS_FAULT_INJECTION
 476         ATTR_LIST(inject_rate),
 477         ATTR_LIST(inject_type),
 478 #endif
 479         ATTR_LIST(dirty_segments),
 480         ATTR_LIST(lifetime_write_kbytes),
 481         ATTR_LIST(features),
 482         ATTR_LIST(reserved_blocks),
 483         ATTR_LIST(current_reserved_blocks),
 484         NULL,
 485 };
 486
 487 static struct attribute *f2fs_feat_attrs[] = {
 488 #ifdef CONFIG_F2FS_FS_ENCRYPTION
 489         ATTR_LIST(encryption),
 490 #endif
 491 #ifdef CONFIG_BLK_DEV_ZONED
 492         ATTR_LIST(block_zoned),
 493 #endif
 494         ATTR_LIST(atomic_write),
 495         ATTR_LIST(extra_attr),
 496         ATTR_LIST(project_quota),
 497         ATTR_LIST(inode_checksum),
 498         ATTR_LIST(flexible_inline_xattr),
 499         ATTR_LIST(quota_ino),
 500         ATTR_LIST(inode_crtime),
 501         ATTR_LIST(lost_found),
 502         ATTR_LIST(sb_checksum),
 503         NULL,
 504 };
 505
 506 static const struct sysfs_ops f2fs_attr_ops = {
 507         .show   = f2fs_attr_show,
 508         .store  = f2fs_attr_store,
 509 };
 510
 511 static struct kobj_type f2fs_sb_ktype = {
 512         .default_attrs  = f2fs_attrs,
 513         .sysfs_ops      = &f2fs_attr_ops,
 514         .release        = f2fs_sb_release,
 515 };
 516
 517 static struct kobj_type f2fs_ktype = {
 518         .sysfs_ops      = &f2fs_attr_ops,
 519 };
 520
 521 static struct kset f2fs_kset = {
 522         .kobj   = {.ktype = &f2fs_ktype},
 523 };
 524
 525 static struct kobj_type f2fs_feat_ktype = {
 526         .default_attrs  = f2fs_feat_attrs,
 527         .sysfs_ops      = &f2fs_attr_ops,
 528 };
 529
 530 static struct kobject f2fs_feat = {
 531         .kset   = &f2fs_kset,
 532 };
 533
 534 static int __maybe_unused segment_info_seq_show(struct seq_file *seq,
 535                                                 void *offset)
 536 {
 537         struct super_block *sb = seq->private;
 538         struct f2fs_sb_info *sbi = F2FS_SB(sb);
 539         unsigned int total_segs =
 540                         le32_to_cpu(sbi->raw_super->segment_count_main);
 541         int i;
 542
 543         seq_puts(seq, "format: segment_type|valid_blocks\n"
 544                 "segment_type(0:HD, 1:WD, 2:CD, 3:HN, 4:WN, 5:CN)\n");
 545
 546         for (i = 0; i < total_segs; i++) {
 547                 struct seg_entry *se = get_seg_entry(sbi, i);
 548
 549                 if ((i % 10) == 0)
 550                         seq_printf(seq, "%-10d", i);
 551                 seq_printf(seq, "%d|%-3u", se->type,
 552                                         get_valid_blocks(sbi, i, false));
 553                 if ((i % 10) == 9 || i == (total_segs - 1))
 554                         seq_putc(seq, '\n');
 555                 else
 556                         seq_putc(seq, ' ');
 557         }
 558
 559         return 0;
 560 }
 561
 562 static int __maybe_unused segment_bits_seq_show(struct seq_file *seq,
 563                                                 void *offset)
 564 {
 565         struct super_block *sb = seq->private;
 566         struct f2fs_sb_info *sbi = F2FS_SB(sb);
 567         unsigned int total_segs =
 568                         le32_to_cpu(sbi->raw_super->segment_count_main);
 569         int i, j;
 570
 571         seq_puts(seq, "format: segment_type|valid_blocks|bitmaps\n"
 572                 "segment_type(0:HD, 1:WD, 2:CD, 3:HN, 4:WN, 5:CN)\n");
 573
 574         for (i = 0; i < total_segs; i++) {
 575                 struct seg_entry *se = get_seg_entry(sbi, i);
 576
 577                 seq_printf(seq, "%-10d", i);
 578                 seq_printf(seq, "%d|%-3u|", se->type,
 579                                         get_valid_blocks(sbi, i, false));
 580                 for (j = 0; j < SIT_VBLOCK_MAP_SIZE; j++)
 581                         seq_printf(seq, " %.2x", se->cur_valid_map[j]);
 582                 seq_putc(seq, '\n');
 583         }
 584         return 0;
 585 }
 586
 587 static int __maybe_unused iostat_info_seq_show(struct seq_file *seq,
 588                                                void *offset)
 589 {
 590         struct super_block *sb = seq->private;
 591         struct f2fs_sb_info *sbi = F2FS_SB(sb);
 592         time64_t now = ktime_get_real_seconds();
 593
 594         if (!sbi->iostat_enable)
 595                 return 0;
 596
 597         seq_printf(seq, "time:          %-16llu\n", now);
 598
 599         /* print app IOs */
 600         seq_printf(seq, "app buffered:  %-16llu\n",
 601                                 sbi->write_iostat[APP_BUFFERED_IO]);
 602         seq_printf(seq, "app direct:    %-16llu\n",
 603                                 sbi->write_iostat[APP_DIRECT_IO]);
 604         seq_printf(seq, "app mapped:    %-16llu\n",
 605                                 sbi->write_iostat[APP_MAPPED_IO]);
 606
 607         /* print fs IOs */
 608         seq_printf(seq, "fs data:       %-16llu\n",
 609                                 sbi->write_iostat[FS_DATA_IO]);
 610         seq_printf(seq, "fs node:       %-16llu\n",
 611                                 sbi->write_iostat[FS_NODE_IO]);
 612         seq_printf(seq, "fs meta:       %-16llu\n",
 613                                 sbi->write_iostat[FS_META_IO]);
 614         seq_printf(seq, "fs gc data:    %-16llu\n",
 615                                 sbi->write_iostat[FS_GC_DATA_IO]);
 616         seq_printf(seq, "fs gc node:    %-16llu\n",
 617                                 sbi->write_iostat[FS_GC_NODE_IO]);
 618         seq_printf(seq, "fs cp data:    %-16llu\n",
 619                                 sbi->write_iostat[FS_CP_DATA_IO]);
 620         seq_printf(seq, "fs cp node:    %-16llu\n",
 621                                 sbi->write_iostat[FS_CP_NODE_IO]);
 622         seq_printf(seq, "fs cp meta:    %-16llu\n",
 623                                 sbi->write_iostat[FS_CP_META_IO]);
 624         seq_printf(seq, "fs discard:    %-16llu\n",
 625                                 sbi->write_iostat[FS_DISCARD]);
 626
 627         return 0;
 628 }
 629
 630 static int __maybe_unused victim_bits_seq_show(struct seq_file *seq,
 631                                                 void *offset)
 632 {
 633         struct super_block *sb = seq->private;
 634         struct f2fs_sb_info *sbi = F2FS_SB(sb);
 635         struct dirty_seglist_info *dirty_i = DIRTY_I(sbi);
 636         int i;
 637
 638         seq_puts(seq, "format: victim_secmap bitmaps\n");
 639
 640         for (i = 0; i < MAIN_SECS(sbi); i++) {
 641                 if ((i % 10) == 0)
 642                         seq_printf(seq, "%-10d", i);
 643                 seq_printf(seq, "%d", test_bit(i, dirty_i->victim_secmap) ? 1 : 0);
 644                 if ((i % 10) == 9 || i == (MAIN_SECS(sbi) - 1))
 645                         seq_putc(seq, '\n');
 646                 else
 647                         seq_putc(seq, ' ');
 648         }
 649         return 0;
 650 }
 651
 652 int __init f2fs_init_sysfs(void)
 653 {
 654         int ret;
 655
 656         kobject_set_name(&f2fs_kset.kobj, "f2fs");
 657         f2fs_kset.kobj.parent = fs_kobj;
 658         ret = kset_register(&f2fs_kset);
 659         if (ret)
 660                 return ret;
 661
 662         ret = kobject_init_and_add(&f2fs_feat, &f2fs_feat_ktype,
 663                                    NULL, "features");
 664         if (ret)
 665                 kset_unregister(&f2fs_kset);
 666         else
 667                 f2fs_proc_root = proc_mkdir("fs/f2fs", NULL);
 668         return ret;
 669 }
 670
 671 void f2fs_exit_sysfs(void)
 672 {
 673         kobject_put(&f2fs_feat);
 674         kset_unregister(&f2fs_kset);
 675         remove_proc_entry("fs/f2fs", NULL);
 676         f2fs_proc_root = NULL;
 677 }
 678
 679 int f2fs_register_sysfs(struct f2fs_sb_info *sbi)
 680 {
 681         struct super_block *sb = sbi->sb;
 682         int err;
 683
 684         sbi->s_kobj.kset = &f2fs_kset;
 685         init_completion(&sbi->s_kobj_unregister);
 686         err = kobject_init_and_add(&sbi->s_kobj, &f2fs_sb_ktype, NULL,
 687                                 "%s", sb->s_id);
 688         if (err)
 689                 return err;
 690
 691         if (f2fs_proc_root)
 692                 sbi->s_proc = proc_mkdir(sb->s_id, f2fs_proc_root);
 693
 694         if (sbi->s_proc) {
 695                 proc_create_single_data("segment_info", S_IRUGO, sbi->s_proc,
 696                                 segment_info_seq_show, sb);
 697                 proc_create_single_data("segment_bits", S_IRUGO, sbi->s_proc,
 698                                 segment_bits_seq_show, sb);
 699                 proc_create_single_data("iostat_info", S_IRUGO, sbi->s_proc,
 700                                 iostat_info_seq_show, sb);
 701                 proc_create_single_data("victim_bits", S_IRUGO, sbi->s_proc,
 702                                 victim_bits_seq_show, sb);
 703         }
 704         return 0;
 705 }
 706
 707 void f2fs_unregister_sysfs(struct f2fs_sb_info *sbi)
 708 {
 709         if (sbi->s_proc) {
 710                 remove_proc_entry("iostat_info", sbi->s_proc);
 711                 remove_proc_entry("segment_info", sbi->s_proc);
 712                 remove_proc_entry("segment_bits", sbi->s_proc);
 713                 remove_proc_entry("victim_bits", sbi->s_proc);
 714                 remove_proc_entry(sbi->sb->s_id, f2fs_proc_root);
 715         }
 716         kobject_del(&sbi->s_kobj);
 717 }