Thomas Gleixner | 50acfb2 | 2019-05-29 07:18:00 -0700 | [diff] [blame] | 1 | // SPDX-License-Identifier: GPL-2.0-only |
Gang He | a860f6e | 2016-03-22 14:24:24 -0700 | [diff] [blame] | 2 | /* -*- mode: c; c-basic-offset: 8; -*- |
| 3 | * vim: noexpandtab sw=8 ts=8 sts=0: |
| 4 | * |
| 5 | * filecheck.c |
| 6 | * |
| 7 | * Code which implements online file check. |
| 8 | * |
| 9 | * Copyright (C) 2016 SuSE. All rights reserved. |
Gang He | a860f6e | 2016-03-22 14:24:24 -0700 | [diff] [blame] | 10 | */ |
| 11 | |
| 12 | #include <linux/list.h> |
| 13 | #include <linux/spinlock.h> |
| 14 | #include <linux/module.h> |
| 15 | #include <linux/slab.h> |
| 16 | #include <linux/kmod.h> |
| 17 | #include <linux/fs.h> |
| 18 | #include <linux/kobject.h> |
| 19 | #include <linux/sysfs.h> |
| 20 | #include <linux/sysctl.h> |
| 21 | #include <cluster/masklog.h> |
| 22 | |
| 23 | #include "ocfs2.h" |
| 24 | #include "ocfs2_fs.h" |
| 25 | #include "stackglue.h" |
| 26 | #include "inode.h" |
| 27 | |
| 28 | #include "filecheck.h" |
| 29 | |
| 30 | |
| 31 | /* File check error strings, |
| 32 | * must correspond with error number in header file. |
| 33 | */ |
| 34 | static const char * const ocfs2_filecheck_errs[] = { |
| 35 | "SUCCESS", |
| 36 | "FAILED", |
| 37 | "INPROGRESS", |
| 38 | "READONLY", |
| 39 | "INJBD", |
| 40 | "INVALIDINO", |
| 41 | "BLOCKECC", |
| 42 | "BLOCKNO", |
| 43 | "VALIDFLAG", |
| 44 | "GENERATION", |
| 45 | "UNSUPPORTED" |
| 46 | }; |
| 47 | |
Gang He | a860f6e | 2016-03-22 14:24:24 -0700 | [diff] [blame] | 48 | struct ocfs2_filecheck_entry { |
| 49 | struct list_head fe_list; |
| 50 | unsigned long fe_ino; |
| 51 | unsigned int fe_type; |
| 52 | unsigned int fe_done:1; |
| 53 | unsigned int fe_status:31; |
| 54 | }; |
| 55 | |
| 56 | struct ocfs2_filecheck_args { |
| 57 | unsigned int fa_type; |
| 58 | union { |
| 59 | unsigned long fa_ino; |
| 60 | unsigned int fa_len; |
| 61 | }; |
| 62 | }; |
| 63 | |
| 64 | static const char * |
| 65 | ocfs2_filecheck_error(int errno) |
| 66 | { |
| 67 | if (!errno) |
| 68 | return ocfs2_filecheck_errs[errno]; |
| 69 | |
| 70 | BUG_ON(errno < OCFS2_FILECHECK_ERR_START || |
| 71 | errno > OCFS2_FILECHECK_ERR_END); |
| 72 | return ocfs2_filecheck_errs[errno - OCFS2_FILECHECK_ERR_START + 1]; |
| 73 | } |
| 74 | |
Gang He | 5f483c4 | 2018-04-05 16:19:29 -0700 | [diff] [blame] | 75 | static ssize_t ocfs2_filecheck_attr_show(struct kobject *kobj, |
| 76 | struct kobj_attribute *attr, |
| 77 | char *buf); |
| 78 | static ssize_t ocfs2_filecheck_attr_store(struct kobject *kobj, |
| 79 | struct kobj_attribute *attr, |
| 80 | const char *buf, size_t count); |
| 81 | static struct kobj_attribute ocfs2_filecheck_attr_chk = |
Gang He | a860f6e | 2016-03-22 14:24:24 -0700 | [diff] [blame] | 82 | __ATTR(check, S_IRUSR | S_IWUSR, |
Gang He | 5f483c4 | 2018-04-05 16:19:29 -0700 | [diff] [blame] | 83 | ocfs2_filecheck_attr_show, |
| 84 | ocfs2_filecheck_attr_store); |
| 85 | static struct kobj_attribute ocfs2_filecheck_attr_fix = |
Gang He | a860f6e | 2016-03-22 14:24:24 -0700 | [diff] [blame] | 86 | __ATTR(fix, S_IRUSR | S_IWUSR, |
Gang He | 5f483c4 | 2018-04-05 16:19:29 -0700 | [diff] [blame] | 87 | ocfs2_filecheck_attr_show, |
| 88 | ocfs2_filecheck_attr_store); |
| 89 | static struct kobj_attribute ocfs2_filecheck_attr_set = |
Gang He | a860f6e | 2016-03-22 14:24:24 -0700 | [diff] [blame] | 90 | __ATTR(set, S_IRUSR | S_IWUSR, |
Gang He | 5f483c4 | 2018-04-05 16:19:29 -0700 | [diff] [blame] | 91 | ocfs2_filecheck_attr_show, |
| 92 | ocfs2_filecheck_attr_store); |
| 93 | static struct attribute *ocfs2_filecheck_attrs[] = { |
| 94 | &ocfs2_filecheck_attr_chk.attr, |
| 95 | &ocfs2_filecheck_attr_fix.attr, |
| 96 | &ocfs2_filecheck_attr_set.attr, |
| 97 | NULL |
| 98 | }; |
| 99 | |
| 100 | static void ocfs2_filecheck_release(struct kobject *kobj) |
| 101 | { |
| 102 | struct ocfs2_filecheck_sysfs_entry *entry = container_of(kobj, |
| 103 | struct ocfs2_filecheck_sysfs_entry, fs_kobj); |
| 104 | |
| 105 | complete(&entry->fs_kobj_unregister); |
| 106 | } |
| 107 | |
| 108 | static ssize_t |
| 109 | ocfs2_filecheck_show(struct kobject *kobj, struct attribute *attr, char *buf) |
| 110 | { |
| 111 | ssize_t ret = -EIO; |
| 112 | struct kobj_attribute *kattr = container_of(attr, |
| 113 | struct kobj_attribute, attr); |
| 114 | |
| 115 | kobject_get(kobj); |
| 116 | if (kattr->show) |
| 117 | ret = kattr->show(kobj, kattr, buf); |
| 118 | kobject_put(kobj); |
| 119 | return ret; |
| 120 | } |
| 121 | |
| 122 | static ssize_t |
| 123 | ocfs2_filecheck_store(struct kobject *kobj, struct attribute *attr, |
| 124 | const char *buf, size_t count) |
| 125 | { |
| 126 | ssize_t ret = -EIO; |
| 127 | struct kobj_attribute *kattr = container_of(attr, |
| 128 | struct kobj_attribute, attr); |
| 129 | |
| 130 | kobject_get(kobj); |
| 131 | if (kattr->store) |
| 132 | ret = kattr->store(kobj, kattr, buf, count); |
| 133 | kobject_put(kobj); |
| 134 | return ret; |
| 135 | } |
| 136 | |
| 137 | static const struct sysfs_ops ocfs2_filecheck_ops = { |
| 138 | .show = ocfs2_filecheck_show, |
| 139 | .store = ocfs2_filecheck_store, |
| 140 | }; |
| 141 | |
| 142 | static struct kobj_type ocfs2_ktype_filecheck = { |
| 143 | .default_attrs = ocfs2_filecheck_attrs, |
| 144 | .sysfs_ops = &ocfs2_filecheck_ops, |
| 145 | .release = ocfs2_filecheck_release, |
| 146 | }; |
Gang He | a860f6e | 2016-03-22 14:24:24 -0700 | [diff] [blame] | 147 | |
Gang He | a860f6e | 2016-03-22 14:24:24 -0700 | [diff] [blame] | 148 | static void |
| 149 | ocfs2_filecheck_sysfs_free(struct ocfs2_filecheck_sysfs_entry *entry) |
| 150 | { |
| 151 | struct ocfs2_filecheck_entry *p; |
| 152 | |
Gang He | a860f6e | 2016-03-22 14:24:24 -0700 | [diff] [blame] | 153 | spin_lock(&entry->fs_fcheck->fc_lock); |
| 154 | while (!list_empty(&entry->fs_fcheck->fc_head)) { |
| 155 | p = list_first_entry(&entry->fs_fcheck->fc_head, |
| 156 | struct ocfs2_filecheck_entry, fe_list); |
| 157 | list_del(&p->fe_list); |
| 158 | BUG_ON(!p->fe_done); /* To free a undone file check entry */ |
| 159 | kfree(p); |
| 160 | } |
| 161 | spin_unlock(&entry->fs_fcheck->fc_lock); |
| 162 | |
Gang He | a860f6e | 2016-03-22 14:24:24 -0700 | [diff] [blame] | 163 | kfree(entry->fs_fcheck); |
Gang He | 5f483c4 | 2018-04-05 16:19:29 -0700 | [diff] [blame] | 164 | entry->fs_fcheck = NULL; |
Gang He | a860f6e | 2016-03-22 14:24:24 -0700 | [diff] [blame] | 165 | } |
| 166 | |
Gang He | 5f483c4 | 2018-04-05 16:19:29 -0700 | [diff] [blame] | 167 | int ocfs2_filecheck_create_sysfs(struct ocfs2_super *osb) |
Gang He | a860f6e | 2016-03-22 14:24:24 -0700 | [diff] [blame] | 168 | { |
Gang He | 5f483c4 | 2018-04-05 16:19:29 -0700 | [diff] [blame] | 169 | int ret; |
| 170 | struct ocfs2_filecheck *fcheck; |
| 171 | struct ocfs2_filecheck_sysfs_entry *entry = &osb->osb_fc_ent; |
Gang He | a860f6e | 2016-03-22 14:24:24 -0700 | [diff] [blame] | 172 | |
| 173 | fcheck = kmalloc(sizeof(struct ocfs2_filecheck), GFP_NOFS); |
Gang He | 5f483c4 | 2018-04-05 16:19:29 -0700 | [diff] [blame] | 174 | if (!fcheck) |
| 175 | return -ENOMEM; |
| 176 | |
| 177 | INIT_LIST_HEAD(&fcheck->fc_head); |
| 178 | spin_lock_init(&fcheck->fc_lock); |
| 179 | fcheck->fc_max = OCFS2_FILECHECK_MINSIZE; |
| 180 | fcheck->fc_size = 0; |
| 181 | fcheck->fc_done = 0; |
| 182 | |
| 183 | entry->fs_kobj.kset = osb->osb_dev_kset; |
| 184 | init_completion(&entry->fs_kobj_unregister); |
| 185 | ret = kobject_init_and_add(&entry->fs_kobj, &ocfs2_ktype_filecheck, |
| 186 | NULL, "filecheck"); |
| 187 | if (ret) { |
Tobin C. Harding | b9fba67 | 2019-05-31 22:30:29 -0700 | [diff] [blame] | 188 | kobject_put(&entry->fs_kobj); |
Gang He | 5f483c4 | 2018-04-05 16:19:29 -0700 | [diff] [blame] | 189 | kfree(fcheck); |
| 190 | return ret; |
Gang He | a860f6e | 2016-03-22 14:24:24 -0700 | [diff] [blame] | 191 | } |
| 192 | |
Gang He | 5f483c4 | 2018-04-05 16:19:29 -0700 | [diff] [blame] | 193 | entry->fs_fcheck = fcheck; |
Gang He | a860f6e | 2016-03-22 14:24:24 -0700 | [diff] [blame] | 194 | return 0; |
Gang He | a860f6e | 2016-03-22 14:24:24 -0700 | [diff] [blame] | 195 | } |
| 196 | |
Gang He | 5f483c4 | 2018-04-05 16:19:29 -0700 | [diff] [blame] | 197 | void ocfs2_filecheck_remove_sysfs(struct ocfs2_super *osb) |
Gang He | a860f6e | 2016-03-22 14:24:24 -0700 | [diff] [blame] | 198 | { |
Gang He | 5f483c4 | 2018-04-05 16:19:29 -0700 | [diff] [blame] | 199 | if (!osb->osb_fc_ent.fs_fcheck) |
| 200 | return; |
| 201 | |
| 202 | kobject_del(&osb->osb_fc_ent.fs_kobj); |
| 203 | kobject_put(&osb->osb_fc_ent.fs_kobj); |
| 204 | wait_for_completion(&osb->osb_fc_ent.fs_kobj_unregister); |
| 205 | ocfs2_filecheck_sysfs_free(&osb->osb_fc_ent); |
Gang He | a860f6e | 2016-03-22 14:24:24 -0700 | [diff] [blame] | 206 | } |
| 207 | |
| 208 | static int |
| 209 | ocfs2_filecheck_erase_entries(struct ocfs2_filecheck_sysfs_entry *ent, |
| 210 | unsigned int count); |
| 211 | static int |
| 212 | ocfs2_filecheck_adjust_max(struct ocfs2_filecheck_sysfs_entry *ent, |
| 213 | unsigned int len) |
| 214 | { |
| 215 | int ret; |
| 216 | |
| 217 | if ((len < OCFS2_FILECHECK_MINSIZE) || (len > OCFS2_FILECHECK_MAXSIZE)) |
| 218 | return -EINVAL; |
| 219 | |
| 220 | spin_lock(&ent->fs_fcheck->fc_lock); |
| 221 | if (len < (ent->fs_fcheck->fc_size - ent->fs_fcheck->fc_done)) { |
Gang He | 8fc2cb4b | 2018-04-05 16:19:25 -0700 | [diff] [blame] | 222 | mlog(ML_NOTICE, |
Gang He | a860f6e | 2016-03-22 14:24:24 -0700 | [diff] [blame] | 223 | "Cannot set online file check maximum entry number " |
| 224 | "to %u due to too many pending entries(%u)\n", |
| 225 | len, ent->fs_fcheck->fc_size - ent->fs_fcheck->fc_done); |
| 226 | ret = -EBUSY; |
| 227 | } else { |
| 228 | if (len < ent->fs_fcheck->fc_size) |
| 229 | BUG_ON(!ocfs2_filecheck_erase_entries(ent, |
| 230 | ent->fs_fcheck->fc_size - len)); |
| 231 | |
| 232 | ent->fs_fcheck->fc_max = len; |
| 233 | ret = 0; |
| 234 | } |
| 235 | spin_unlock(&ent->fs_fcheck->fc_lock); |
| 236 | |
| 237 | return ret; |
| 238 | } |
| 239 | |
| 240 | #define OCFS2_FILECHECK_ARGS_LEN 24 |
| 241 | static int |
| 242 | ocfs2_filecheck_args_get_long(const char *buf, size_t count, |
| 243 | unsigned long *val) |
| 244 | { |
| 245 | char buffer[OCFS2_FILECHECK_ARGS_LEN]; |
| 246 | |
| 247 | memcpy(buffer, buf, count); |
| 248 | buffer[count] = '\0'; |
| 249 | |
| 250 | if (kstrtoul(buffer, 0, val)) |
| 251 | return 1; |
| 252 | |
| 253 | return 0; |
| 254 | } |
| 255 | |
| 256 | static int |
| 257 | ocfs2_filecheck_type_parse(const char *name, unsigned int *type) |
| 258 | { |
| 259 | if (!strncmp(name, "fix", 4)) |
| 260 | *type = OCFS2_FILECHECK_TYPE_FIX; |
| 261 | else if (!strncmp(name, "check", 6)) |
| 262 | *type = OCFS2_FILECHECK_TYPE_CHK; |
| 263 | else if (!strncmp(name, "set", 4)) |
| 264 | *type = OCFS2_FILECHECK_TYPE_SET; |
| 265 | else |
| 266 | return 1; |
| 267 | |
| 268 | return 0; |
| 269 | } |
| 270 | |
| 271 | static int |
| 272 | ocfs2_filecheck_args_parse(const char *name, const char *buf, size_t count, |
| 273 | struct ocfs2_filecheck_args *args) |
| 274 | { |
| 275 | unsigned long val = 0; |
| 276 | unsigned int type; |
| 277 | |
| 278 | /* too short/long args length */ |
| 279 | if ((count < 1) || (count >= OCFS2_FILECHECK_ARGS_LEN)) |
| 280 | return 1; |
| 281 | |
| 282 | if (ocfs2_filecheck_type_parse(name, &type)) |
| 283 | return 1; |
| 284 | if (ocfs2_filecheck_args_get_long(buf, count, &val)) |
| 285 | return 1; |
| 286 | |
| 287 | if (val <= 0) |
| 288 | return 1; |
| 289 | |
| 290 | args->fa_type = type; |
| 291 | if (type == OCFS2_FILECHECK_TYPE_SET) |
| 292 | args->fa_len = (unsigned int)val; |
| 293 | else |
| 294 | args->fa_ino = val; |
| 295 | |
| 296 | return 0; |
| 297 | } |
| 298 | |
Gang He | 5f483c4 | 2018-04-05 16:19:29 -0700 | [diff] [blame] | 299 | static ssize_t ocfs2_filecheck_attr_show(struct kobject *kobj, |
Gang He | a860f6e | 2016-03-22 14:24:24 -0700 | [diff] [blame] | 300 | struct kobj_attribute *attr, |
| 301 | char *buf) |
| 302 | { |
| 303 | |
| 304 | ssize_t ret = 0, total = 0, remain = PAGE_SIZE; |
| 305 | unsigned int type; |
| 306 | struct ocfs2_filecheck_entry *p; |
Gang He | 5f483c4 | 2018-04-05 16:19:29 -0700 | [diff] [blame] | 307 | struct ocfs2_filecheck_sysfs_entry *ent = container_of(kobj, |
| 308 | struct ocfs2_filecheck_sysfs_entry, fs_kobj); |
Gang He | a860f6e | 2016-03-22 14:24:24 -0700 | [diff] [blame] | 309 | |
| 310 | if (ocfs2_filecheck_type_parse(attr->attr.name, &type)) |
| 311 | return -EINVAL; |
| 312 | |
Gang He | a860f6e | 2016-03-22 14:24:24 -0700 | [diff] [blame] | 313 | if (type == OCFS2_FILECHECK_TYPE_SET) { |
| 314 | spin_lock(&ent->fs_fcheck->fc_lock); |
| 315 | total = snprintf(buf, remain, "%u\n", ent->fs_fcheck->fc_max); |
| 316 | spin_unlock(&ent->fs_fcheck->fc_lock); |
| 317 | goto exit; |
| 318 | } |
| 319 | |
| 320 | ret = snprintf(buf, remain, "INO\t\tDONE\tERROR\n"); |
| 321 | total += ret; |
| 322 | remain -= ret; |
| 323 | spin_lock(&ent->fs_fcheck->fc_lock); |
| 324 | list_for_each_entry(p, &ent->fs_fcheck->fc_head, fe_list) { |
| 325 | if (p->fe_type != type) |
| 326 | continue; |
| 327 | |
| 328 | ret = snprintf(buf + total, remain, "%lu\t\t%u\t%s\n", |
| 329 | p->fe_ino, p->fe_done, |
| 330 | ocfs2_filecheck_error(p->fe_status)); |
| 331 | if (ret < 0) { |
| 332 | total = ret; |
| 333 | break; |
| 334 | } |
| 335 | if (ret == remain) { |
| 336 | /* snprintf() didn't fit */ |
| 337 | total = -E2BIG; |
| 338 | break; |
| 339 | } |
| 340 | total += ret; |
| 341 | remain -= ret; |
| 342 | } |
| 343 | spin_unlock(&ent->fs_fcheck->fc_lock); |
| 344 | |
| 345 | exit: |
Gang He | a860f6e | 2016-03-22 14:24:24 -0700 | [diff] [blame] | 346 | return total; |
| 347 | } |
| 348 | |
Gang He | 5f483c4 | 2018-04-05 16:19:29 -0700 | [diff] [blame] | 349 | static inline int |
Gang He | 39ec377 | 2018-04-05 16:19:32 -0700 | [diff] [blame] | 350 | ocfs2_filecheck_is_dup_entry(struct ocfs2_filecheck_sysfs_entry *ent, |
| 351 | unsigned long ino) |
| 352 | { |
| 353 | struct ocfs2_filecheck_entry *p; |
| 354 | |
| 355 | list_for_each_entry(p, &ent->fs_fcheck->fc_head, fe_list) { |
| 356 | if (!p->fe_done) { |
| 357 | if (p->fe_ino == ino) |
| 358 | return 1; |
| 359 | } |
| 360 | } |
| 361 | |
| 362 | return 0; |
| 363 | } |
| 364 | |
| 365 | static inline int |
Gang He | a860f6e | 2016-03-22 14:24:24 -0700 | [diff] [blame] | 366 | ocfs2_filecheck_erase_entry(struct ocfs2_filecheck_sysfs_entry *ent) |
| 367 | { |
| 368 | struct ocfs2_filecheck_entry *p; |
| 369 | |
| 370 | list_for_each_entry(p, &ent->fs_fcheck->fc_head, fe_list) { |
| 371 | if (p->fe_done) { |
| 372 | list_del(&p->fe_list); |
| 373 | kfree(p); |
| 374 | ent->fs_fcheck->fc_size--; |
| 375 | ent->fs_fcheck->fc_done--; |
| 376 | return 1; |
| 377 | } |
| 378 | } |
| 379 | |
| 380 | return 0; |
| 381 | } |
| 382 | |
| 383 | static int |
| 384 | ocfs2_filecheck_erase_entries(struct ocfs2_filecheck_sysfs_entry *ent, |
| 385 | unsigned int count) |
| 386 | { |
| 387 | unsigned int i = 0; |
| 388 | unsigned int ret = 0; |
| 389 | |
| 390 | while (i++ < count) { |
| 391 | if (ocfs2_filecheck_erase_entry(ent)) |
| 392 | ret++; |
| 393 | else |
| 394 | break; |
| 395 | } |
| 396 | |
| 397 | return (ret == count ? 1 : 0); |
| 398 | } |
| 399 | |
| 400 | static void |
| 401 | ocfs2_filecheck_done_entry(struct ocfs2_filecheck_sysfs_entry *ent, |
| 402 | struct ocfs2_filecheck_entry *entry) |
| 403 | { |
Gang He | a860f6e | 2016-03-22 14:24:24 -0700 | [diff] [blame] | 404 | spin_lock(&ent->fs_fcheck->fc_lock); |
Gang He | 8fc2cb4b | 2018-04-05 16:19:25 -0700 | [diff] [blame] | 405 | entry->fe_done = 1; |
Gang He | a860f6e | 2016-03-22 14:24:24 -0700 | [diff] [blame] | 406 | ent->fs_fcheck->fc_done++; |
| 407 | spin_unlock(&ent->fs_fcheck->fc_lock); |
| 408 | } |
| 409 | |
| 410 | static unsigned int |
Gang He | 5f483c4 | 2018-04-05 16:19:29 -0700 | [diff] [blame] | 411 | ocfs2_filecheck_handle(struct ocfs2_super *osb, |
Gang He | a860f6e | 2016-03-22 14:24:24 -0700 | [diff] [blame] | 412 | unsigned long ino, unsigned int flags) |
| 413 | { |
| 414 | unsigned int ret = OCFS2_FILECHECK_ERR_SUCCESS; |
| 415 | struct inode *inode = NULL; |
| 416 | int rc; |
| 417 | |
Gang He | 5f483c4 | 2018-04-05 16:19:29 -0700 | [diff] [blame] | 418 | inode = ocfs2_iget(osb, ino, flags, 0); |
Gang He | a860f6e | 2016-03-22 14:24:24 -0700 | [diff] [blame] | 419 | if (IS_ERR(inode)) { |
| 420 | rc = (int)(-(long)inode); |
| 421 | if (rc >= OCFS2_FILECHECK_ERR_START && |
| 422 | rc < OCFS2_FILECHECK_ERR_END) |
| 423 | ret = rc; |
| 424 | else |
| 425 | ret = OCFS2_FILECHECK_ERR_FAILED; |
| 426 | } else |
| 427 | iput(inode); |
| 428 | |
| 429 | return ret; |
| 430 | } |
| 431 | |
| 432 | static void |
| 433 | ocfs2_filecheck_handle_entry(struct ocfs2_filecheck_sysfs_entry *ent, |
| 434 | struct ocfs2_filecheck_entry *entry) |
| 435 | { |
Gang He | 5f483c4 | 2018-04-05 16:19:29 -0700 | [diff] [blame] | 436 | struct ocfs2_super *osb = container_of(ent, struct ocfs2_super, |
| 437 | osb_fc_ent); |
| 438 | |
Gang He | a860f6e | 2016-03-22 14:24:24 -0700 | [diff] [blame] | 439 | if (entry->fe_type == OCFS2_FILECHECK_TYPE_CHK) |
Gang He | 5f483c4 | 2018-04-05 16:19:29 -0700 | [diff] [blame] | 440 | entry->fe_status = ocfs2_filecheck_handle(osb, |
Gang He | a860f6e | 2016-03-22 14:24:24 -0700 | [diff] [blame] | 441 | entry->fe_ino, OCFS2_FI_FLAG_FILECHECK_CHK); |
| 442 | else if (entry->fe_type == OCFS2_FILECHECK_TYPE_FIX) |
Gang He | 5f483c4 | 2018-04-05 16:19:29 -0700 | [diff] [blame] | 443 | entry->fe_status = ocfs2_filecheck_handle(osb, |
Gang He | a860f6e | 2016-03-22 14:24:24 -0700 | [diff] [blame] | 444 | entry->fe_ino, OCFS2_FI_FLAG_FILECHECK_FIX); |
| 445 | else |
| 446 | entry->fe_status = OCFS2_FILECHECK_ERR_UNSUPPORTED; |
| 447 | |
| 448 | ocfs2_filecheck_done_entry(ent, entry); |
| 449 | } |
| 450 | |
Gang He | 5f483c4 | 2018-04-05 16:19:29 -0700 | [diff] [blame] | 451 | static ssize_t ocfs2_filecheck_attr_store(struct kobject *kobj, |
Gang He | a860f6e | 2016-03-22 14:24:24 -0700 | [diff] [blame] | 452 | struct kobj_attribute *attr, |
| 453 | const char *buf, size_t count) |
| 454 | { |
Gang He | 5f483c4 | 2018-04-05 16:19:29 -0700 | [diff] [blame] | 455 | ssize_t ret = 0; |
Gang He | a860f6e | 2016-03-22 14:24:24 -0700 | [diff] [blame] | 456 | struct ocfs2_filecheck_args args; |
| 457 | struct ocfs2_filecheck_entry *entry; |
Gang He | 5f483c4 | 2018-04-05 16:19:29 -0700 | [diff] [blame] | 458 | struct ocfs2_filecheck_sysfs_entry *ent = container_of(kobj, |
| 459 | struct ocfs2_filecheck_sysfs_entry, fs_kobj); |
Gang He | a860f6e | 2016-03-22 14:24:24 -0700 | [diff] [blame] | 460 | |
| 461 | if (count == 0) |
| 462 | return count; |
| 463 | |
Gang He | 5f483c4 | 2018-04-05 16:19:29 -0700 | [diff] [blame] | 464 | if (ocfs2_filecheck_args_parse(attr->attr.name, buf, count, &args)) |
Gang He | a860f6e | 2016-03-22 14:24:24 -0700 | [diff] [blame] | 465 | return -EINVAL; |
Gang He | a860f6e | 2016-03-22 14:24:24 -0700 | [diff] [blame] | 466 | |
| 467 | if (args.fa_type == OCFS2_FILECHECK_TYPE_SET) { |
| 468 | ret = ocfs2_filecheck_adjust_max(ent, args.fa_len); |
| 469 | goto exit; |
| 470 | } |
| 471 | |
| 472 | entry = kmalloc(sizeof(struct ocfs2_filecheck_entry), GFP_NOFS); |
| 473 | if (!entry) { |
| 474 | ret = -ENOMEM; |
| 475 | goto exit; |
| 476 | } |
| 477 | |
| 478 | spin_lock(&ent->fs_fcheck->fc_lock); |
Gang He | 39ec377 | 2018-04-05 16:19:32 -0700 | [diff] [blame] | 479 | if (ocfs2_filecheck_is_dup_entry(ent, args.fa_ino)) { |
| 480 | ret = -EEXIST; |
| 481 | kfree(entry); |
| 482 | } else if ((ent->fs_fcheck->fc_size >= ent->fs_fcheck->fc_max) && |
Gang He | 5f483c4 | 2018-04-05 16:19:29 -0700 | [diff] [blame] | 483 | (ent->fs_fcheck->fc_done == 0)) { |
Gang He | 8fc2cb4b | 2018-04-05 16:19:25 -0700 | [diff] [blame] | 484 | mlog(ML_NOTICE, |
Gang He | a860f6e | 2016-03-22 14:24:24 -0700 | [diff] [blame] | 485 | "Cannot do more file check " |
| 486 | "since file check queue(%u) is full now\n", |
| 487 | ent->fs_fcheck->fc_max); |
Gang He | 8fc2cb4b | 2018-04-05 16:19:25 -0700 | [diff] [blame] | 488 | ret = -EAGAIN; |
Gang He | a860f6e | 2016-03-22 14:24:24 -0700 | [diff] [blame] | 489 | kfree(entry); |
| 490 | } else { |
| 491 | if ((ent->fs_fcheck->fc_size >= ent->fs_fcheck->fc_max) && |
| 492 | (ent->fs_fcheck->fc_done > 0)) { |
| 493 | /* Delete the oldest entry which was done, |
| 494 | * make sure the entry size in list does |
| 495 | * not exceed maximum value |
| 496 | */ |
| 497 | BUG_ON(!ocfs2_filecheck_erase_entry(ent)); |
| 498 | } |
| 499 | |
| 500 | entry->fe_ino = args.fa_ino; |
| 501 | entry->fe_type = args.fa_type; |
| 502 | entry->fe_done = 0; |
| 503 | entry->fe_status = OCFS2_FILECHECK_ERR_INPROGRESS; |
| 504 | list_add_tail(&entry->fe_list, &ent->fs_fcheck->fc_head); |
| 505 | ent->fs_fcheck->fc_size++; |
| 506 | } |
| 507 | spin_unlock(&ent->fs_fcheck->fc_lock); |
| 508 | |
| 509 | if (!ret) |
| 510 | ocfs2_filecheck_handle_entry(ent, entry); |
| 511 | |
| 512 | exit: |
Gang He | a860f6e | 2016-03-22 14:24:24 -0700 | [diff] [blame] | 513 | return (!ret ? count : ret); |
| 514 | } |