Brian Foster | a31b1d3 | 2014-07-15 08:07:01 +1000 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2014 Red Hat, Inc. |
| 3 | * All Rights Reserved. |
| 4 | * |
| 5 | * This program is free software; you can redistribute it and/or |
| 6 | * modify it under the terms of the GNU General Public License as |
| 7 | * published by the Free Software Foundation. |
| 8 | * |
| 9 | * This program is distributed in the hope that it would be useful, |
| 10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 12 | * GNU General Public License for more details. |
| 13 | * |
| 14 | * You should have received a copy of the GNU General Public License |
| 15 | * along with this program; if not, write the Free Software Foundation, |
| 16 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
| 17 | */ |
| 18 | |
| 19 | #include "xfs.h" |
Carlos Maiolino | 192852b | 2016-05-18 10:58:51 +1000 | [diff] [blame] | 20 | #include "xfs_shared.h" |
Brian Foster | 801cc4e | 2016-03-15 11:42:44 +1100 | [diff] [blame] | 21 | #include "xfs_format.h" |
Brian Foster | baff4e4 | 2014-07-15 08:07:29 +1000 | [diff] [blame] | 22 | #include "xfs_log_format.h" |
Brian Foster | 801cc4e | 2016-03-15 11:42:44 +1100 | [diff] [blame] | 23 | #include "xfs_trans_resv.h" |
Carlos Maiolino | 192852b | 2016-05-18 10:58:51 +1000 | [diff] [blame] | 24 | #include "xfs_sysfs.h" |
Brian Foster | baff4e4 | 2014-07-15 08:07:29 +1000 | [diff] [blame] | 25 | #include "xfs_log.h" |
| 26 | #include "xfs_log_priv.h" |
Bill O'Donnell | bb230c1 | 2015-10-12 05:15:45 +1100 | [diff] [blame] | 27 | #include "xfs_stats.h" |
Brian Foster | 801cc4e | 2016-03-15 11:42:44 +1100 | [diff] [blame] | 28 | #include "xfs_mount.h" |
Brian Foster | a31b1d3 | 2014-07-15 08:07:01 +1000 | [diff] [blame] | 29 | |
| 30 | struct xfs_sysfs_attr { |
| 31 | struct attribute attr; |
Bill O'Donnell | a27c264 | 2015-10-12 05:18:45 +1100 | [diff] [blame] | 32 | ssize_t (*show)(struct kobject *kobject, char *buf); |
| 33 | ssize_t (*store)(struct kobject *kobject, const char *buf, |
| 34 | size_t count); |
Brian Foster | a31b1d3 | 2014-07-15 08:07:01 +1000 | [diff] [blame] | 35 | }; |
| 36 | |
| 37 | static inline struct xfs_sysfs_attr * |
| 38 | to_attr(struct attribute *attr) |
| 39 | { |
| 40 | return container_of(attr, struct xfs_sysfs_attr, attr); |
| 41 | } |
| 42 | |
| 43 | #define XFS_SYSFS_ATTR_RW(name) \ |
| 44 | static struct xfs_sysfs_attr xfs_sysfs_attr_##name = __ATTR_RW(name) |
| 45 | #define XFS_SYSFS_ATTR_RO(name) \ |
| 46 | static struct xfs_sysfs_attr xfs_sysfs_attr_##name = __ATTR_RO(name) |
Bill O'Donnell | bb230c1 | 2015-10-12 05:15:45 +1100 | [diff] [blame] | 47 | #define XFS_SYSFS_ATTR_WO(name) \ |
| 48 | static struct xfs_sysfs_attr xfs_sysfs_attr_##name = __ATTR_WO(name) |
Brian Foster | a31b1d3 | 2014-07-15 08:07:01 +1000 | [diff] [blame] | 49 | |
| 50 | #define ATTR_LIST(name) &xfs_sysfs_attr_##name.attr |
| 51 | |
Bill O'Donnell | a27c264 | 2015-10-12 05:18:45 +1100 | [diff] [blame] | 52 | STATIC ssize_t |
| 53 | xfs_sysfs_object_show( |
| 54 | struct kobject *kobject, |
| 55 | struct attribute *attr, |
| 56 | char *buf) |
| 57 | { |
| 58 | struct xfs_sysfs_attr *xfs_attr = to_attr(attr); |
| 59 | |
| 60 | return xfs_attr->show ? xfs_attr->show(kobject, buf) : 0; |
| 61 | } |
| 62 | |
| 63 | STATIC ssize_t |
| 64 | xfs_sysfs_object_store( |
| 65 | struct kobject *kobject, |
| 66 | struct attribute *attr, |
| 67 | const char *buf, |
| 68 | size_t count) |
| 69 | { |
| 70 | struct xfs_sysfs_attr *xfs_attr = to_attr(attr); |
| 71 | |
| 72 | return xfs_attr->store ? xfs_attr->store(kobject, buf, count) : 0; |
| 73 | } |
| 74 | |
| 75 | static const struct sysfs_ops xfs_sysfs_ops = { |
| 76 | .show = xfs_sysfs_object_show, |
| 77 | .store = xfs_sysfs_object_store, |
| 78 | }; |
| 79 | |
Brian Foster | 801cc4e | 2016-03-15 11:42:44 +1100 | [diff] [blame] | 80 | /* |
| 81 | * xfs_mount kobject. The mp kobject also serves as the per-mount parent object |
| 82 | * that is identified by the fsname under sysfs. |
| 83 | */ |
| 84 | |
| 85 | static inline struct xfs_mount * |
| 86 | to_mp(struct kobject *kobject) |
| 87 | { |
| 88 | struct xfs_kobj *kobj = to_kobj(kobject); |
| 89 | |
| 90 | return container_of(kobj, struct xfs_mount, m_kobj); |
| 91 | } |
| 92 | |
| 93 | #ifdef DEBUG |
| 94 | |
| 95 | STATIC ssize_t |
| 96 | fail_writes_store( |
| 97 | struct kobject *kobject, |
| 98 | const char *buf, |
| 99 | size_t count) |
| 100 | { |
| 101 | struct xfs_mount *mp = to_mp(kobject); |
| 102 | int ret; |
| 103 | int val; |
| 104 | |
| 105 | ret = kstrtoint(buf, 0, &val); |
| 106 | if (ret) |
| 107 | return ret; |
| 108 | |
| 109 | if (val == 1) |
| 110 | mp->m_fail_writes = true; |
| 111 | else if (val == 0) |
| 112 | mp->m_fail_writes = false; |
| 113 | else |
| 114 | return -EINVAL; |
| 115 | |
| 116 | return count; |
| 117 | } |
| 118 | |
| 119 | STATIC ssize_t |
| 120 | fail_writes_show( |
| 121 | struct kobject *kobject, |
| 122 | char *buf) |
| 123 | { |
| 124 | struct xfs_mount *mp = to_mp(kobject); |
| 125 | |
| 126 | return snprintf(buf, PAGE_SIZE, "%d\n", mp->m_fail_writes ? 1 : 0); |
| 127 | } |
| 128 | XFS_SYSFS_ATTR_RW(fail_writes); |
| 129 | |
| 130 | #endif /* DEBUG */ |
| 131 | |
| 132 | static struct attribute *xfs_mp_attrs[] = { |
| 133 | #ifdef DEBUG |
| 134 | ATTR_LIST(fail_writes), |
| 135 | #endif |
| 136 | NULL, |
| 137 | }; |
| 138 | |
| 139 | struct kobj_type xfs_mp_ktype = { |
| 140 | .release = xfs_sysfs_release, |
| 141 | .sysfs_ops = &xfs_sysfs_ops, |
| 142 | .default_attrs = xfs_mp_attrs, |
| 143 | }; |
| 144 | |
Brian Foster | 65b6573 | 2014-09-09 11:52:42 +1000 | [diff] [blame] | 145 | #ifdef DEBUG |
| 146 | /* debug */ |
| 147 | |
Brian Foster | 2e22717 | 2014-09-09 11:56:13 +1000 | [diff] [blame] | 148 | STATIC ssize_t |
| 149 | log_recovery_delay_store( |
Bill O'Donnell | a27c264 | 2015-10-12 05:18:45 +1100 | [diff] [blame] | 150 | struct kobject *kobject, |
Brian Foster | 2e22717 | 2014-09-09 11:56:13 +1000 | [diff] [blame] | 151 | const char *buf, |
Bill O'Donnell | a27c264 | 2015-10-12 05:18:45 +1100 | [diff] [blame] | 152 | size_t count) |
Brian Foster | 2e22717 | 2014-09-09 11:56:13 +1000 | [diff] [blame] | 153 | { |
| 154 | int ret; |
| 155 | int val; |
| 156 | |
| 157 | ret = kstrtoint(buf, 0, &val); |
| 158 | if (ret) |
| 159 | return ret; |
| 160 | |
| 161 | if (val < 0 || val > 60) |
| 162 | return -EINVAL; |
| 163 | |
| 164 | xfs_globals.log_recovery_delay = val; |
| 165 | |
| 166 | return count; |
| 167 | } |
| 168 | |
| 169 | STATIC ssize_t |
| 170 | log_recovery_delay_show( |
Bill O'Donnell | a27c264 | 2015-10-12 05:18:45 +1100 | [diff] [blame] | 171 | struct kobject *kobject, |
| 172 | char *buf) |
Brian Foster | 2e22717 | 2014-09-09 11:56:13 +1000 | [diff] [blame] | 173 | { |
| 174 | return snprintf(buf, PAGE_SIZE, "%d\n", xfs_globals.log_recovery_delay); |
| 175 | } |
| 176 | XFS_SYSFS_ATTR_RW(log_recovery_delay); |
| 177 | |
Brian Foster | 65b6573 | 2014-09-09 11:52:42 +1000 | [diff] [blame] | 178 | static struct attribute *xfs_dbg_attrs[] = { |
Brian Foster | 2e22717 | 2014-09-09 11:56:13 +1000 | [diff] [blame] | 179 | ATTR_LIST(log_recovery_delay), |
Brian Foster | 65b6573 | 2014-09-09 11:52:42 +1000 | [diff] [blame] | 180 | NULL, |
| 181 | }; |
| 182 | |
Brian Foster | 65b6573 | 2014-09-09 11:52:42 +1000 | [diff] [blame] | 183 | struct kobj_type xfs_dbg_ktype = { |
| 184 | .release = xfs_sysfs_release, |
Bill O'Donnell | a27c264 | 2015-10-12 05:18:45 +1100 | [diff] [blame] | 185 | .sysfs_ops = &xfs_sysfs_ops, |
Brian Foster | 65b6573 | 2014-09-09 11:52:42 +1000 | [diff] [blame] | 186 | .default_attrs = xfs_dbg_attrs, |
| 187 | }; |
| 188 | |
| 189 | #endif /* DEBUG */ |
| 190 | |
Bill O'Donnell | bb230c1 | 2015-10-12 05:15:45 +1100 | [diff] [blame] | 191 | /* stats */ |
| 192 | |
Bill O'Donnell | 80529c4 | 2015-10-12 05:19:45 +1100 | [diff] [blame] | 193 | static inline struct xstats * |
| 194 | to_xstats(struct kobject *kobject) |
| 195 | { |
| 196 | struct xfs_kobj *kobj = to_kobj(kobject); |
| 197 | |
| 198 | return container_of(kobj, struct xstats, xs_kobj); |
| 199 | } |
| 200 | |
Bill O'Donnell | bb230c1 | 2015-10-12 05:15:45 +1100 | [diff] [blame] | 201 | STATIC ssize_t |
| 202 | stats_show( |
Bill O'Donnell | a27c264 | 2015-10-12 05:18:45 +1100 | [diff] [blame] | 203 | struct kobject *kobject, |
| 204 | char *buf) |
Bill O'Donnell | bb230c1 | 2015-10-12 05:15:45 +1100 | [diff] [blame] | 205 | { |
Bill O'Donnell | 80529c4 | 2015-10-12 05:19:45 +1100 | [diff] [blame] | 206 | struct xstats *stats = to_xstats(kobject); |
| 207 | |
| 208 | return xfs_stats_format(stats->xs_stats, buf); |
Bill O'Donnell | bb230c1 | 2015-10-12 05:15:45 +1100 | [diff] [blame] | 209 | } |
| 210 | XFS_SYSFS_ATTR_RO(stats); |
| 211 | |
| 212 | STATIC ssize_t |
| 213 | stats_clear_store( |
Bill O'Donnell | a27c264 | 2015-10-12 05:18:45 +1100 | [diff] [blame] | 214 | struct kobject *kobject, |
Bill O'Donnell | bb230c1 | 2015-10-12 05:15:45 +1100 | [diff] [blame] | 215 | const char *buf, |
Bill O'Donnell | a27c264 | 2015-10-12 05:18:45 +1100 | [diff] [blame] | 216 | size_t count) |
Bill O'Donnell | bb230c1 | 2015-10-12 05:15:45 +1100 | [diff] [blame] | 217 | { |
| 218 | int ret; |
| 219 | int val; |
Bill O'Donnell | 80529c4 | 2015-10-12 05:19:45 +1100 | [diff] [blame] | 220 | struct xstats *stats = to_xstats(kobject); |
Bill O'Donnell | bb230c1 | 2015-10-12 05:15:45 +1100 | [diff] [blame] | 221 | |
| 222 | ret = kstrtoint(buf, 0, &val); |
| 223 | if (ret) |
| 224 | return ret; |
| 225 | |
| 226 | if (val != 1) |
| 227 | return -EINVAL; |
Bill O'Donnell | 80529c4 | 2015-10-12 05:19:45 +1100 | [diff] [blame] | 228 | |
| 229 | xfs_stats_clearall(stats->xs_stats); |
Bill O'Donnell | bb230c1 | 2015-10-12 05:15:45 +1100 | [diff] [blame] | 230 | return count; |
| 231 | } |
| 232 | XFS_SYSFS_ATTR_WO(stats_clear); |
| 233 | |
| 234 | static struct attribute *xfs_stats_attrs[] = { |
| 235 | ATTR_LIST(stats), |
| 236 | ATTR_LIST(stats_clear), |
| 237 | NULL, |
| 238 | }; |
| 239 | |
Bill O'Donnell | bb230c1 | 2015-10-12 05:15:45 +1100 | [diff] [blame] | 240 | struct kobj_type xfs_stats_ktype = { |
| 241 | .release = xfs_sysfs_release, |
Bill O'Donnell | a27c264 | 2015-10-12 05:18:45 +1100 | [diff] [blame] | 242 | .sysfs_ops = &xfs_sysfs_ops, |
Bill O'Donnell | bb230c1 | 2015-10-12 05:15:45 +1100 | [diff] [blame] | 243 | .default_attrs = xfs_stats_attrs, |
| 244 | }; |
| 245 | |
Brian Foster | baff4e4 | 2014-07-15 08:07:29 +1000 | [diff] [blame] | 246 | /* xlog */ |
| 247 | |
Bill O'Donnell | a27c264 | 2015-10-12 05:18:45 +1100 | [diff] [blame] | 248 | static inline struct xlog * |
| 249 | to_xlog(struct kobject *kobject) |
| 250 | { |
| 251 | struct xfs_kobj *kobj = to_kobj(kobject); |
| 252 | |
| 253 | return container_of(kobj, struct xlog, l_kobj); |
| 254 | } |
| 255 | |
Brian Foster | 80d6d69 | 2014-07-15 08:07:48 +1000 | [diff] [blame] | 256 | STATIC ssize_t |
| 257 | log_head_lsn_show( |
Bill O'Donnell | a27c264 | 2015-10-12 05:18:45 +1100 | [diff] [blame] | 258 | struct kobject *kobject, |
| 259 | char *buf) |
Brian Foster | 80d6d69 | 2014-07-15 08:07:48 +1000 | [diff] [blame] | 260 | { |
Brian Foster | 80d6d69 | 2014-07-15 08:07:48 +1000 | [diff] [blame] | 261 | int cycle; |
| 262 | int block; |
Bill O'Donnell | a27c264 | 2015-10-12 05:18:45 +1100 | [diff] [blame] | 263 | struct xlog *log = to_xlog(kobject); |
Brian Foster | 80d6d69 | 2014-07-15 08:07:48 +1000 | [diff] [blame] | 264 | |
| 265 | spin_lock(&log->l_icloglock); |
| 266 | cycle = log->l_curr_cycle; |
| 267 | block = log->l_curr_block; |
| 268 | spin_unlock(&log->l_icloglock); |
| 269 | |
| 270 | return snprintf(buf, PAGE_SIZE, "%d:%d\n", cycle, block); |
| 271 | } |
| 272 | XFS_SYSFS_ATTR_RO(log_head_lsn); |
| 273 | |
| 274 | STATIC ssize_t |
| 275 | log_tail_lsn_show( |
Bill O'Donnell | a27c264 | 2015-10-12 05:18:45 +1100 | [diff] [blame] | 276 | struct kobject *kobject, |
| 277 | char *buf) |
Brian Foster | 80d6d69 | 2014-07-15 08:07:48 +1000 | [diff] [blame] | 278 | { |
Brian Foster | 80d6d69 | 2014-07-15 08:07:48 +1000 | [diff] [blame] | 279 | int cycle; |
| 280 | int block; |
Bill O'Donnell | a27c264 | 2015-10-12 05:18:45 +1100 | [diff] [blame] | 281 | struct xlog *log = to_xlog(kobject); |
Brian Foster | 80d6d69 | 2014-07-15 08:07:48 +1000 | [diff] [blame] | 282 | |
| 283 | xlog_crack_atomic_lsn(&log->l_tail_lsn, &cycle, &block); |
| 284 | return snprintf(buf, PAGE_SIZE, "%d:%d\n", cycle, block); |
| 285 | } |
| 286 | XFS_SYSFS_ATTR_RO(log_tail_lsn); |
| 287 | |
| 288 | STATIC ssize_t |
| 289 | reserve_grant_head_show( |
Bill O'Donnell | a27c264 | 2015-10-12 05:18:45 +1100 | [diff] [blame] | 290 | struct kobject *kobject, |
| 291 | char *buf) |
| 292 | |
Brian Foster | 80d6d69 | 2014-07-15 08:07:48 +1000 | [diff] [blame] | 293 | { |
Brian Foster | 80d6d69 | 2014-07-15 08:07:48 +1000 | [diff] [blame] | 294 | int cycle; |
| 295 | int bytes; |
Bill O'Donnell | a27c264 | 2015-10-12 05:18:45 +1100 | [diff] [blame] | 296 | struct xlog *log = to_xlog(kobject); |
Brian Foster | 80d6d69 | 2014-07-15 08:07:48 +1000 | [diff] [blame] | 297 | |
| 298 | xlog_crack_grant_head(&log->l_reserve_head.grant, &cycle, &bytes); |
| 299 | return snprintf(buf, PAGE_SIZE, "%d:%d\n", cycle, bytes); |
| 300 | } |
| 301 | XFS_SYSFS_ATTR_RO(reserve_grant_head); |
| 302 | |
| 303 | STATIC ssize_t |
| 304 | write_grant_head_show( |
Bill O'Donnell | a27c264 | 2015-10-12 05:18:45 +1100 | [diff] [blame] | 305 | struct kobject *kobject, |
| 306 | char *buf) |
Brian Foster | 80d6d69 | 2014-07-15 08:07:48 +1000 | [diff] [blame] | 307 | { |
Brian Foster | 80d6d69 | 2014-07-15 08:07:48 +1000 | [diff] [blame] | 308 | int cycle; |
| 309 | int bytes; |
Bill O'Donnell | a27c264 | 2015-10-12 05:18:45 +1100 | [diff] [blame] | 310 | struct xlog *log = to_xlog(kobject); |
Brian Foster | 80d6d69 | 2014-07-15 08:07:48 +1000 | [diff] [blame] | 311 | |
| 312 | xlog_crack_grant_head(&log->l_write_head.grant, &cycle, &bytes); |
| 313 | return snprintf(buf, PAGE_SIZE, "%d:%d\n", cycle, bytes); |
| 314 | } |
| 315 | XFS_SYSFS_ATTR_RO(write_grant_head); |
| 316 | |
Brian Foster | 609adfc | 2016-01-05 07:41:16 +1100 | [diff] [blame] | 317 | #ifdef DEBUG |
| 318 | STATIC ssize_t |
| 319 | log_badcrc_factor_store( |
| 320 | struct kobject *kobject, |
| 321 | const char *buf, |
| 322 | size_t count) |
| 323 | { |
| 324 | struct xlog *log = to_xlog(kobject); |
| 325 | int ret; |
| 326 | uint32_t val; |
| 327 | |
| 328 | ret = kstrtouint(buf, 0, &val); |
| 329 | if (ret) |
| 330 | return ret; |
| 331 | |
| 332 | log->l_badcrc_factor = val; |
| 333 | |
| 334 | return count; |
| 335 | } |
| 336 | |
| 337 | STATIC ssize_t |
| 338 | log_badcrc_factor_show( |
| 339 | struct kobject *kobject, |
| 340 | char *buf) |
| 341 | { |
| 342 | struct xlog *log = to_xlog(kobject); |
| 343 | |
| 344 | return snprintf(buf, PAGE_SIZE, "%d\n", log->l_badcrc_factor); |
| 345 | } |
| 346 | |
| 347 | XFS_SYSFS_ATTR_RW(log_badcrc_factor); |
| 348 | #endif /* DEBUG */ |
| 349 | |
Brian Foster | baff4e4 | 2014-07-15 08:07:29 +1000 | [diff] [blame] | 350 | static struct attribute *xfs_log_attrs[] = { |
Brian Foster | 80d6d69 | 2014-07-15 08:07:48 +1000 | [diff] [blame] | 351 | ATTR_LIST(log_head_lsn), |
| 352 | ATTR_LIST(log_tail_lsn), |
| 353 | ATTR_LIST(reserve_grant_head), |
| 354 | ATTR_LIST(write_grant_head), |
Brian Foster | 609adfc | 2016-01-05 07:41:16 +1100 | [diff] [blame] | 355 | #ifdef DEBUG |
| 356 | ATTR_LIST(log_badcrc_factor), |
| 357 | #endif |
Brian Foster | baff4e4 | 2014-07-15 08:07:29 +1000 | [diff] [blame] | 358 | NULL, |
| 359 | }; |
| 360 | |
Brian Foster | baff4e4 | 2014-07-15 08:07:29 +1000 | [diff] [blame] | 361 | struct kobj_type xfs_log_ktype = { |
| 362 | .release = xfs_sysfs_release, |
Bill O'Donnell | a27c264 | 2015-10-12 05:18:45 +1100 | [diff] [blame] | 363 | .sysfs_ops = &xfs_sysfs_ops, |
Brian Foster | baff4e4 | 2014-07-15 08:07:29 +1000 | [diff] [blame] | 364 | .default_attrs = xfs_log_attrs, |
| 365 | }; |
Carlos Maiolino | 192852b | 2016-05-18 10:58:51 +1000 | [diff] [blame] | 366 | |
| 367 | /* |
| 368 | * Metadata IO error configuration |
| 369 | * |
| 370 | * The sysfs structure here is: |
| 371 | * ...xfs/<dev>/error/<class>/<errno>/<error_attrs> |
| 372 | * |
| 373 | * where <class> allows us to discriminate between data IO and metadata IO, |
| 374 | * and any other future type of IO (e.g. special inode or directory error |
| 375 | * handling) we care to support. |
| 376 | */ |
Carlos Maiolino | 192852b | 2016-05-18 10:58:51 +1000 | [diff] [blame] | 377 | static inline struct xfs_error_cfg * |
| 378 | to_error_cfg(struct kobject *kobject) |
| 379 | { |
| 380 | struct xfs_kobj *kobj = to_kobj(kobject); |
| 381 | return container_of(kobj, struct xfs_error_cfg, kobj); |
| 382 | } |
| 383 | |
Carlos Maiolino | e6b3bb7 | 2016-05-18 11:11:27 +1000 | [diff] [blame] | 384 | static inline struct xfs_mount * |
| 385 | err_to_mp(struct kobject *kobject) |
| 386 | { |
| 387 | struct xfs_kobj *kobj = to_kobj(kobject); |
| 388 | return container_of(kobj, struct xfs_mount, m_error_kobj); |
| 389 | } |
| 390 | |
Carlos Maiolino | a5ea70d | 2016-05-18 11:08:15 +1000 | [diff] [blame] | 391 | static ssize_t |
| 392 | max_retries_show( |
| 393 | struct kobject *kobject, |
| 394 | char *buf) |
| 395 | { |
| 396 | struct xfs_error_cfg *cfg = to_error_cfg(kobject); |
| 397 | |
| 398 | return snprintf(buf, PAGE_SIZE, "%d\n", cfg->max_retries); |
| 399 | } |
| 400 | |
| 401 | static ssize_t |
| 402 | max_retries_store( |
| 403 | struct kobject *kobject, |
| 404 | const char *buf, |
| 405 | size_t count) |
| 406 | { |
| 407 | struct xfs_error_cfg *cfg = to_error_cfg(kobject); |
| 408 | int ret; |
| 409 | int val; |
| 410 | |
| 411 | ret = kstrtoint(buf, 0, &val); |
| 412 | if (ret) |
| 413 | return ret; |
| 414 | |
| 415 | if (val < -1) |
| 416 | return -EINVAL; |
| 417 | |
| 418 | cfg->max_retries = val; |
| 419 | return count; |
| 420 | } |
| 421 | XFS_SYSFS_ATTR_RW(max_retries); |
| 422 | |
| 423 | static ssize_t |
| 424 | retry_timeout_seconds_show( |
| 425 | struct kobject *kobject, |
| 426 | char *buf) |
| 427 | { |
| 428 | struct xfs_error_cfg *cfg = to_error_cfg(kobject); |
| 429 | |
| 430 | return snprintf(buf, PAGE_SIZE, "%ld\n", |
| 431 | jiffies_to_msecs(cfg->retry_timeout) / MSEC_PER_SEC); |
| 432 | } |
| 433 | |
| 434 | static ssize_t |
| 435 | retry_timeout_seconds_store( |
| 436 | struct kobject *kobject, |
| 437 | const char *buf, |
| 438 | size_t count) |
| 439 | { |
| 440 | struct xfs_error_cfg *cfg = to_error_cfg(kobject); |
| 441 | int ret; |
| 442 | int val; |
| 443 | |
| 444 | ret = kstrtoint(buf, 0, &val); |
| 445 | if (ret) |
| 446 | return ret; |
| 447 | |
| 448 | /* 1 day timeout maximum */ |
| 449 | if (val < 0 || val > 86400) |
| 450 | return -EINVAL; |
| 451 | |
| 452 | cfg->retry_timeout = msecs_to_jiffies(val * MSEC_PER_SEC); |
| 453 | return count; |
| 454 | } |
| 455 | XFS_SYSFS_ATTR_RW(retry_timeout_seconds); |
| 456 | |
Carlos Maiolino | e6b3bb7 | 2016-05-18 11:11:27 +1000 | [diff] [blame] | 457 | static ssize_t |
| 458 | fail_at_unmount_show( |
| 459 | struct kobject *kobject, |
| 460 | char *buf) |
| 461 | { |
| 462 | struct xfs_mount *mp = err_to_mp(kobject); |
| 463 | |
| 464 | return snprintf(buf, PAGE_SIZE, "%d\n", mp->m_fail_unmount); |
| 465 | } |
| 466 | |
| 467 | static ssize_t |
| 468 | fail_at_unmount_store( |
| 469 | struct kobject *kobject, |
| 470 | const char *buf, |
| 471 | size_t count) |
| 472 | { |
| 473 | struct xfs_mount *mp = err_to_mp(kobject); |
| 474 | int ret; |
| 475 | int val; |
| 476 | |
| 477 | ret = kstrtoint(buf, 0, &val); |
| 478 | if (ret) |
| 479 | return ret; |
| 480 | |
| 481 | if (val < 0 || val > 1) |
| 482 | return -EINVAL; |
| 483 | |
| 484 | mp->m_fail_unmount = val; |
| 485 | return count; |
| 486 | } |
| 487 | XFS_SYSFS_ATTR_RW(fail_at_unmount); |
| 488 | |
Carlos Maiolino | a5ea70d | 2016-05-18 11:08:15 +1000 | [diff] [blame] | 489 | static struct attribute *xfs_error_attrs[] = { |
| 490 | ATTR_LIST(max_retries), |
| 491 | ATTR_LIST(retry_timeout_seconds), |
| 492 | NULL, |
| 493 | }; |
| 494 | |
| 495 | |
Carlos Maiolino | 192852b | 2016-05-18 10:58:51 +1000 | [diff] [blame] | 496 | struct kobj_type xfs_error_cfg_ktype = { |
| 497 | .release = xfs_sysfs_release, |
| 498 | .sysfs_ops = &xfs_sysfs_ops, |
| 499 | .default_attrs = xfs_error_attrs, |
| 500 | }; |
| 501 | |
| 502 | struct kobj_type xfs_error_ktype = { |
| 503 | .release = xfs_sysfs_release, |
Carlos Maiolino | e6b3bb7 | 2016-05-18 11:11:27 +1000 | [diff] [blame] | 504 | .sysfs_ops = &xfs_sysfs_ops, |
Carlos Maiolino | 192852b | 2016-05-18 10:58:51 +1000 | [diff] [blame] | 505 | }; |
| 506 | |
Carlos Maiolino | ef6a50f | 2016-05-18 11:06:44 +1000 | [diff] [blame] | 507 | /* |
| 508 | * Error initialization tables. These need to be ordered in the same |
| 509 | * order as the enums used to index the array. All class init tables need to |
| 510 | * define a "default" behaviour as the first entry, all other entries can be |
| 511 | * empty. |
| 512 | */ |
| 513 | struct xfs_error_init { |
| 514 | char *name; |
| 515 | int max_retries; |
Carlos Maiolino | a5ea70d | 2016-05-18 11:08:15 +1000 | [diff] [blame] | 516 | int retry_timeout; /* in seconds */ |
Carlos Maiolino | ef6a50f | 2016-05-18 11:06:44 +1000 | [diff] [blame] | 517 | }; |
| 518 | |
| 519 | static const struct xfs_error_init xfs_error_meta_init[XFS_ERR_ERRNO_MAX] = { |
| 520 | { .name = "default", |
Carlos Maiolino | e0a431b3 | 2016-05-18 11:09:28 +1000 | [diff] [blame] | 521 | .max_retries = XFS_ERR_RETRY_FOREVER, |
Carlos Maiolino | a5ea70d | 2016-05-18 11:08:15 +1000 | [diff] [blame] | 522 | .retry_timeout = 0, |
Carlos Maiolino | ef6a50f | 2016-05-18 11:06:44 +1000 | [diff] [blame] | 523 | }, |
Carlos Maiolino | e0a431b3 | 2016-05-18 11:09:28 +1000 | [diff] [blame] | 524 | { .name = "EIO", |
| 525 | .max_retries = XFS_ERR_RETRY_FOREVER, |
| 526 | .retry_timeout = 0, |
| 527 | }, |
| 528 | { .name = "ENOSPC", |
| 529 | .max_retries = XFS_ERR_RETRY_FOREVER, |
| 530 | .retry_timeout = 0, |
| 531 | }, |
| 532 | { .name = "ENODEV", |
| 533 | .max_retries = 0, |
| 534 | }, |
Carlos Maiolino | ef6a50f | 2016-05-18 11:06:44 +1000 | [diff] [blame] | 535 | }; |
| 536 | |
| 537 | static int |
| 538 | xfs_error_sysfs_init_class( |
| 539 | struct xfs_mount *mp, |
| 540 | int class, |
| 541 | const char *parent_name, |
| 542 | struct xfs_kobj *parent_kobj, |
| 543 | const struct xfs_error_init init[]) |
| 544 | { |
| 545 | struct xfs_error_cfg *cfg; |
| 546 | int error; |
| 547 | int i; |
| 548 | |
| 549 | ASSERT(class < XFS_ERR_CLASS_MAX); |
| 550 | |
| 551 | error = xfs_sysfs_init(parent_kobj, &xfs_error_ktype, |
| 552 | &mp->m_error_kobj, parent_name); |
| 553 | if (error) |
| 554 | return error; |
| 555 | |
| 556 | for (i = 0; i < XFS_ERR_ERRNO_MAX; i++) { |
| 557 | cfg = &mp->m_error_cfg[class][i]; |
| 558 | error = xfs_sysfs_init(&cfg->kobj, &xfs_error_cfg_ktype, |
| 559 | parent_kobj, init[i].name); |
| 560 | if (error) |
| 561 | goto out_error; |
| 562 | |
| 563 | cfg->max_retries = init[i].max_retries; |
Carlos Maiolino | a5ea70d | 2016-05-18 11:08:15 +1000 | [diff] [blame] | 564 | cfg->retry_timeout = msecs_to_jiffies( |
| 565 | init[i].retry_timeout * MSEC_PER_SEC); |
Carlos Maiolino | ef6a50f | 2016-05-18 11:06:44 +1000 | [diff] [blame] | 566 | } |
| 567 | return 0; |
| 568 | |
| 569 | out_error: |
| 570 | /* unwind the entries that succeeded */ |
| 571 | for (i--; i >= 0; i--) { |
| 572 | cfg = &mp->m_error_cfg[class][i]; |
| 573 | xfs_sysfs_del(&cfg->kobj); |
| 574 | } |
| 575 | xfs_sysfs_del(parent_kobj); |
| 576 | return error; |
| 577 | } |
| 578 | |
Carlos Maiolino | 192852b | 2016-05-18 10:58:51 +1000 | [diff] [blame] | 579 | int |
| 580 | xfs_error_sysfs_init( |
| 581 | struct xfs_mount *mp) |
| 582 | { |
| 583 | int error; |
| 584 | |
| 585 | /* .../xfs/<dev>/error/ */ |
| 586 | error = xfs_sysfs_init(&mp->m_error_kobj, &xfs_error_ktype, |
| 587 | &mp->m_kobj, "error"); |
Carlos Maiolino | ffd40ef | 2016-05-18 11:01:00 +1000 | [diff] [blame] | 588 | if (error) |
| 589 | return error; |
| 590 | |
Carlos Maiolino | e6b3bb7 | 2016-05-18 11:11:27 +1000 | [diff] [blame] | 591 | error = sysfs_create_file(&mp->m_error_kobj.kobject, |
| 592 | ATTR_LIST(fail_at_unmount)); |
| 593 | |
| 594 | if (error) |
| 595 | goto out_error; |
| 596 | |
Carlos Maiolino | ffd40ef | 2016-05-18 11:01:00 +1000 | [diff] [blame] | 597 | /* .../xfs/<dev>/error/metadata/ */ |
Carlos Maiolino | ef6a50f | 2016-05-18 11:06:44 +1000 | [diff] [blame] | 598 | error = xfs_error_sysfs_init_class(mp, XFS_ERR_METADATA, |
| 599 | "metadata", &mp->m_error_meta_kobj, |
| 600 | xfs_error_meta_init); |
Carlos Maiolino | ffd40ef | 2016-05-18 11:01:00 +1000 | [diff] [blame] | 601 | if (error) |
| 602 | goto out_error; |
| 603 | |
Carlos Maiolino | ffd40ef | 2016-05-18 11:01:00 +1000 | [diff] [blame] | 604 | return 0; |
| 605 | |
Carlos Maiolino | ffd40ef | 2016-05-18 11:01:00 +1000 | [diff] [blame] | 606 | out_error: |
| 607 | xfs_sysfs_del(&mp->m_error_kobj); |
Carlos Maiolino | 192852b | 2016-05-18 10:58:51 +1000 | [diff] [blame] | 608 | return error; |
| 609 | } |
| 610 | |
| 611 | void |
| 612 | xfs_error_sysfs_del( |
| 613 | struct xfs_mount *mp) |
| 614 | { |
Carlos Maiolino | ffd40ef | 2016-05-18 11:01:00 +1000 | [diff] [blame] | 615 | struct xfs_error_cfg *cfg; |
| 616 | int i, j; |
| 617 | |
| 618 | for (i = 0; i < XFS_ERR_CLASS_MAX; i++) { |
| 619 | for (j = 0; j < XFS_ERR_ERRNO_MAX; j++) { |
| 620 | cfg = &mp->m_error_cfg[i][j]; |
| 621 | |
| 622 | xfs_sysfs_del(&cfg->kobj); |
| 623 | } |
| 624 | } |
| 625 | xfs_sysfs_del(&mp->m_error_meta_kobj); |
Carlos Maiolino | 192852b | 2016-05-18 10:58:51 +1000 | [diff] [blame] | 626 | xfs_sysfs_del(&mp->m_error_kobj); |
| 627 | } |
Carlos Maiolino | df30939 | 2016-05-18 11:05:33 +1000 | [diff] [blame] | 628 | |
| 629 | struct xfs_error_cfg * |
| 630 | xfs_error_get_cfg( |
| 631 | struct xfs_mount *mp, |
| 632 | int error_class, |
| 633 | int error) |
| 634 | { |
| 635 | struct xfs_error_cfg *cfg; |
| 636 | |
| 637 | switch (error) { |
Carlos Maiolino | e0a431b3 | 2016-05-18 11:09:28 +1000 | [diff] [blame] | 638 | case EIO: |
| 639 | cfg = &mp->m_error_cfg[error_class][XFS_ERR_EIO]; |
| 640 | break; |
| 641 | case ENOSPC: |
| 642 | cfg = &mp->m_error_cfg[error_class][XFS_ERR_ENOSPC]; |
| 643 | break; |
| 644 | case ENODEV: |
| 645 | cfg = &mp->m_error_cfg[error_class][XFS_ERR_ENODEV]; |
| 646 | break; |
Carlos Maiolino | df30939 | 2016-05-18 11:05:33 +1000 | [diff] [blame] | 647 | default: |
| 648 | cfg = &mp->m_error_cfg[error_class][XFS_ERR_DEFAULT]; |
| 649 | break; |
| 650 | } |
| 651 | |
| 652 | return cfg; |
| 653 | } |