blob: 48878ec0a1b185e8286cd9da20a63391a88b44fa [file] [log] [blame]
Mark Fashehccd979b2005-12-15 14:31:24 -08001/* -*- mode: c; c-basic-offset: 8; -*-
2 * vim: noexpandtab sw=8 ts=8 sts=0:
3 *
4 * super.c
5 *
6 * load/unload driver, mount/dismount volumes
7 *
8 * Copyright (C) 2002, 2004 Oracle. All rights reserved.
9 *
10 * This program is free software; you can redistribute it and/or
11 * modify it under the terms of the GNU General Public
12 * License as published by the Free Software Foundation; either
13 * version 2 of the License, or (at your option) any later version.
14 *
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 * General Public License for more details.
19 *
20 * You should have received a copy of the GNU General Public
21 * License along with this program; if not, write to the
22 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
23 * Boston, MA 021110-1307, USA.
24 */
25
26#include <linux/module.h>
27#include <linux/fs.h>
28#include <linux/types.h>
29#include <linux/slab.h>
30#include <linux/highmem.h>
Mark Fashehccd979b2005-12-15 14:31:24 -080031#include <linux/init.h>
32#include <linux/random.h>
33#include <linux/statfs.h>
34#include <linux/moduleparam.h>
35#include <linux/blkdev.h>
36#include <linux/socket.h>
37#include <linux/inet.h>
38#include <linux/parser.h>
39#include <linux/crc32.h>
40#include <linux/debugfs.h>
Sunil Mushrand5500712007-09-06 13:34:16 -070041#include <linux/mount.h>
Joel Becker6953b4c2008-01-29 16:59:56 -080042#include <linux/seq_file.h>
Jan Kara19ece542008-08-21 20:13:17 +020043#include <linux/quotaops.h>
Dan Magenheimer1cfd8bd2011-05-26 10:02:08 -060044#include <linux/cleancache.h>
Ingo Molnarf361bf42017-02-03 23:47:37 +010045#include <linux/signal.h>
Mark Fashehccd979b2005-12-15 14:31:24 -080046
Wengang Wang80a9a842011-02-21 11:13:14 +080047#define CREATE_TRACE_POINTS
48#include "ocfs2_trace.h"
49
Mark Fashehccd979b2005-12-15 14:31:24 -080050#include <cluster/masklog.h>
51
52#include "ocfs2.h"
53
54/* this should be the only file to include a version 1 header */
55#include "ocfs1_fs_compat.h"
56
57#include "alloc.h"
Mark Fasheha11f7e62011-06-22 14:23:38 -070058#include "aops.h"
Joel Beckerd030cc92008-12-11 15:04:14 -080059#include "blockcheck.h"
Mark Fashehccd979b2005-12-15 14:31:24 -080060#include "dlmglue.h"
61#include "export.h"
62#include "extent_map.h"
63#include "heartbeat.h"
64#include "inode.h"
65#include "journal.h"
66#include "localalloc.h"
67#include "namei.h"
68#include "slot_map.h"
69#include "super.h"
70#include "sysfile.h"
71#include "uptodate.h"
Tiger Yangcf1d6c72008-08-18 17:11:00 +080072#include "xattr.h"
Jan Kara9e33d692008-08-25 19:56:50 +020073#include "quota.h"
Tao Ma374a2632009-08-24 11:13:37 +080074#include "refcounttree.h"
Tiger Yangb89c5422010-01-25 14:11:06 +080075#include "suballoc.h"
Mark Fashehccd979b2005-12-15 14:31:24 -080076
77#include "buffer_head_io.h"
Gang Hea849d462016-03-22 14:24:27 -070078#include "filecheck.h"
Mark Fashehccd979b2005-12-15 14:31:24 -080079
Fabian Frederick1a5c4e22014-06-04 16:06:06 -070080static struct kmem_cache *ocfs2_inode_cachep;
Jan Kara9e33d692008-08-25 19:56:50 +020081struct kmem_cache *ocfs2_dquot_cachep;
82struct kmem_cache *ocfs2_qf_chunk_cachep;
Mark Fashehccd979b2005-12-15 14:31:24 -080083
Fabian Frederick1a5c4e22014-06-04 16:06:06 -070084static struct dentry *ocfs2_debugfs_root;
Mark Fashehccd979b2005-12-15 14:31:24 -080085
86MODULE_AUTHOR("Oracle");
87MODULE_LICENSE("GPL");
Goldwyn Rodriguesff8fb332014-01-21 15:48:20 -080088MODULE_DESCRIPTION("OCFS2 cluster file system");
Mark Fashehccd979b2005-12-15 14:31:24 -080089
Tiger Yangc0123ad2007-09-08 00:16:10 +080090struct mount_options
91{
Mark Fashehd147b3d2007-11-07 14:40:36 -080092 unsigned long commit_interval;
Tiger Yangc0123ad2007-09-08 00:16:10 +080093 unsigned long mount_opt;
94 unsigned int atime_quantum;
Junxiao Bi2905e9b2020-08-06 23:18:02 -070095 unsigned short slot;
Mark Fasheh73c8a802010-04-05 18:17:13 -070096 int localalloc_opt;
Mark Fashehd02f00c2009-12-07 13:10:48 -080097 unsigned int resv_level;
Mark Fasheh83f92312010-04-05 18:17:16 -070098 int dir_resv_level;
Joel Beckerb61817e2008-02-01 15:08:23 -080099 char cluster_stack[OCFS2_STACK_LABEL_LEN + 1];
Tiger Yangc0123ad2007-09-08 00:16:10 +0800100};
101
Mark Fashehccd979b2005-12-15 14:31:24 -0800102static int ocfs2_parse_options(struct super_block *sb, char *options,
Tiger Yangc0123ad2007-09-08 00:16:10 +0800103 struct mount_options *mopt,
Sunil Mushranbaf46612007-06-18 17:00:24 -0700104 int is_remount);
Jan Kara5297aad2009-10-15 14:54:04 +0200105static int ocfs2_check_set_options(struct super_block *sb,
106 struct mount_options *options);
Al Viro34c80b12011-12-08 21:32:45 -0500107static int ocfs2_show_options(struct seq_file *s, struct dentry *root);
Mark Fashehccd979b2005-12-15 14:31:24 -0800108static void ocfs2_put_super(struct super_block *sb);
109static int ocfs2_mount_volume(struct super_block *sb);
110static int ocfs2_remount(struct super_block *sb, int *flags, char *data);
111static void ocfs2_dismount_volume(struct super_block *sb, int mnt_err);
112static int ocfs2_initialize_mem_caches(void);
113static void ocfs2_free_mem_caches(void);
114static void ocfs2_delete_osb(struct ocfs2_super *osb);
115
David Howells726c3342006-06-23 02:02:58 -0700116static int ocfs2_statfs(struct dentry *dentry, struct kstatfs *buf);
Mark Fashehccd979b2005-12-15 14:31:24 -0800117
118static int ocfs2_sync_fs(struct super_block *sb, int wait);
119
120static int ocfs2_init_global_system_inodes(struct ocfs2_super *osb);
121static int ocfs2_init_local_system_inodes(struct ocfs2_super *osb);
Denis Chengbddb8eb32007-09-27 02:10:04 +0800122static void ocfs2_release_system_inodes(struct ocfs2_super *osb);
Mark Fashehccd979b2005-12-15 14:31:24 -0800123static int ocfs2_check_volume(struct ocfs2_super *osb);
124static int ocfs2_verify_volume(struct ocfs2_dinode *di,
125 struct buffer_head *bh,
Joel Becker73be1922009-01-06 14:57:08 -0800126 u32 sectsize,
127 struct ocfs2_blockcheck_stats *stats);
Mark Fashehccd979b2005-12-15 14:31:24 -0800128static int ocfs2_initialize_super(struct super_block *sb,
129 struct buffer_head *bh,
Joel Becker73be1922009-01-06 14:57:08 -0800130 int sector_size,
131 struct ocfs2_blockcheck_stats *stats);
Mark Fashehccd979b2005-12-15 14:31:24 -0800132static int ocfs2_get_sector(struct super_block *sb,
133 struct buffer_head **bh,
134 int block,
135 int sect_size);
Mark Fashehccd979b2005-12-15 14:31:24 -0800136static struct inode *ocfs2_alloc_inode(struct super_block *sb);
137static void ocfs2_destroy_inode(struct inode *inode);
Jan Kara19ece542008-08-21 20:13:17 +0200138static int ocfs2_susp_quotas(struct ocfs2_super *osb, int unsuspend);
139static int ocfs2_enable_quotas(struct ocfs2_super *osb);
140static void ocfs2_disable_quotas(struct ocfs2_super *osb);
Mark Fashehccd979b2005-12-15 14:31:24 -0800141
Jan Kara1c92ec62014-09-29 15:02:51 +0200142static struct dquot **ocfs2_get_dquots(struct inode *inode)
143{
144 return OCFS2_I(inode)->i_dquot;
145}
146
Josef 'Jeff' Sipekee9b6d62007-02-12 00:55:41 -0800147static const struct super_operations ocfs2_sops = {
Mark Fashehccd979b2005-12-15 14:31:24 -0800148 .statfs = ocfs2_statfs,
149 .alloc_inode = ocfs2_alloc_inode,
150 .destroy_inode = ocfs2_destroy_inode,
151 .drop_inode = ocfs2_drop_inode,
Al Viro066d92d2010-06-08 21:28:10 -0400152 .evict_inode = ocfs2_evict_inode,
Mark Fashehccd979b2005-12-15 14:31:24 -0800153 .sync_fs = ocfs2_sync_fs,
Mark Fashehccd979b2005-12-15 14:31:24 -0800154 .put_super = ocfs2_put_super,
155 .remount_fs = ocfs2_remount,
Sunil Mushrand5500712007-09-06 13:34:16 -0700156 .show_options = ocfs2_show_options,
Jan Kara9e33d692008-08-25 19:56:50 +0200157 .quota_read = ocfs2_quota_read,
158 .quota_write = ocfs2_quota_write,
Jan Kara1c92ec62014-09-29 15:02:51 +0200159 .get_dquots = ocfs2_get_dquots,
Mark Fashehccd979b2005-12-15 14:31:24 -0800160};
161
162enum {
163 Opt_barrier,
164 Opt_err_panic,
165 Opt_err_ro,
166 Opt_intr,
167 Opt_nointr,
168 Opt_hb_none,
169 Opt_hb_local,
Sunil Mushran2c442712010-10-07 15:23:50 -0700170 Opt_hb_global,
Mark Fashehccd979b2005-12-15 14:31:24 -0800171 Opt_data_ordered,
172 Opt_data_writeback,
Tiger Yang7f1a37e2006-11-15 15:48:42 +0800173 Opt_atime_quantum,
Sunil Mushranbaf46612007-06-18 17:00:24 -0700174 Opt_slot,
Mark Fashehd147b3d2007-11-07 14:40:36 -0800175 Opt_commit,
Sunil Mushran2fbe8d12007-12-20 14:58:11 -0800176 Opt_localalloc,
Mark Fasheh53fc6222007-12-20 16:49:04 -0800177 Opt_localflocks,
Joel Beckerb61817e2008-02-01 15:08:23 -0800178 Opt_stack,
Tiger Yangcf1d6c72008-08-18 17:11:00 +0800179 Opt_user_xattr,
180 Opt_nouser_xattr,
Joel Becker12462f12008-09-03 20:03:40 -0700181 Opt_inode64,
Tiger Yanga68979b2008-11-14 11:17:52 +0800182 Opt_acl,
183 Opt_noacl,
Jan Kara19ece542008-08-21 20:13:17 +0200184 Opt_usrquota,
185 Opt_grpquota,
Tristan Ye7bdb0d12010-10-11 16:46:39 +0800186 Opt_coherency_buffered,
187 Opt_coherency_full,
Mark Fashehd02f00c2009-12-07 13:10:48 -0800188 Opt_resv_level,
Mark Fasheh83f92312010-04-05 18:17:16 -0700189 Opt_dir_resv_level,
alex chen1dfeb762015-02-10 14:09:04 -0800190 Opt_journal_async_commit,
Goldwyn Rodrigues7d0fb912015-09-04 15:44:11 -0700191 Opt_err_cont,
Mark Fashehccd979b2005-12-15 14:31:24 -0800192 Opt_err,
193};
194
Steven Whitehousea447c092008-10-13 10:46:57 +0100195static const match_table_t tokens = {
Mark Fashehccd979b2005-12-15 14:31:24 -0800196 {Opt_barrier, "barrier=%u"},
197 {Opt_err_panic, "errors=panic"},
198 {Opt_err_ro, "errors=remount-ro"},
199 {Opt_intr, "intr"},
200 {Opt_nointr, "nointr"},
201 {Opt_hb_none, OCFS2_HB_NONE},
202 {Opt_hb_local, OCFS2_HB_LOCAL},
Sunil Mushran2c442712010-10-07 15:23:50 -0700203 {Opt_hb_global, OCFS2_HB_GLOBAL},
Mark Fashehccd979b2005-12-15 14:31:24 -0800204 {Opt_data_ordered, "data=ordered"},
205 {Opt_data_writeback, "data=writeback"},
Tiger Yang7f1a37e2006-11-15 15:48:42 +0800206 {Opt_atime_quantum, "atime_quantum=%u"},
Sunil Mushranbaf46612007-06-18 17:00:24 -0700207 {Opt_slot, "preferred_slot=%u"},
Mark Fashehd147b3d2007-11-07 14:40:36 -0800208 {Opt_commit, "commit=%u"},
Sunil Mushran2fbe8d12007-12-20 14:58:11 -0800209 {Opt_localalloc, "localalloc=%d"},
Mark Fasheh53fc6222007-12-20 16:49:04 -0800210 {Opt_localflocks, "localflocks"},
Joel Beckerb61817e2008-02-01 15:08:23 -0800211 {Opt_stack, "cluster_stack=%s"},
Tiger Yangcf1d6c72008-08-18 17:11:00 +0800212 {Opt_user_xattr, "user_xattr"},
213 {Opt_nouser_xattr, "nouser_xattr"},
Joel Becker12462f12008-09-03 20:03:40 -0700214 {Opt_inode64, "inode64"},
Tiger Yanga68979b2008-11-14 11:17:52 +0800215 {Opt_acl, "acl"},
216 {Opt_noacl, "noacl"},
Jan Kara19ece542008-08-21 20:13:17 +0200217 {Opt_usrquota, "usrquota"},
218 {Opt_grpquota, "grpquota"},
Tristan Ye7bdb0d12010-10-11 16:46:39 +0800219 {Opt_coherency_buffered, "coherency=buffered"},
220 {Opt_coherency_full, "coherency=full"},
Mark Fashehd02f00c2009-12-07 13:10:48 -0800221 {Opt_resv_level, "resv_level=%u"},
Mark Fasheh83f92312010-04-05 18:17:16 -0700222 {Opt_dir_resv_level, "dir_resv_level=%u"},
alex chen1dfeb762015-02-10 14:09:04 -0800223 {Opt_journal_async_commit, "journal_async_commit"},
Goldwyn Rodrigues7d0fb912015-09-04 15:44:11 -0700224 {Opt_err_cont, "errors=continue"},
Mark Fashehccd979b2005-12-15 14:31:24 -0800225 {Opt_err, NULL}
226};
227
Sunil Mushran50397502008-12-17 14:17:43 -0800228#ifdef CONFIG_DEBUG_FS
229static int ocfs2_osb_dump(struct ocfs2_super *osb, char *buf, int len)
230{
Sunil Mushran50397502008-12-17 14:17:43 -0800231 struct ocfs2_cluster_connection *cconn = osb->cconn;
232 struct ocfs2_recovery_map *rm = osb->recovery_map;
Sunil Mushrandf152c22009-06-22 11:40:07 -0700233 struct ocfs2_orphan_scan *os = &osb->osb_orphan_scan;
234 int i, out = 0;
jiangyiwenbfd97a02016-03-15 14:53:01 -0700235 unsigned long flags;
Sunil Mushran50397502008-12-17 14:17:43 -0800236
237 out += snprintf(buf + out, len - out,
238 "%10s => Id: %-s Uuid: %-s Gen: 0x%X Label: %-s\n",
239 "Device", osb->dev_str, osb->uuid_str,
240 osb->fs_generation, osb->vol_label);
241
242 out += snprintf(buf + out, len - out,
243 "%10s => State: %d Flags: 0x%lX\n", "Volume",
244 atomic_read(&osb->vol_state), osb->osb_flags);
245
246 out += snprintf(buf + out, len - out,
247 "%10s => Block: %lu Cluster: %d\n", "Sizes",
248 osb->sb->s_blocksize, osb->s_clustersize);
249
250 out += snprintf(buf + out, len - out,
251 "%10s => Compat: 0x%X Incompat: 0x%X "
252 "ROcompat: 0x%X\n",
253 "Features", osb->s_feature_compat,
254 osb->s_feature_incompat, osb->s_feature_ro_compat);
255
256 out += snprintf(buf + out, len - out,
257 "%10s => Opts: 0x%lX AtimeQuanta: %u\n", "Mount",
258 osb->s_mount_opt, osb->s_atime_quantum);
259
Sunil Mushranc3d38842009-06-19 14:45:55 -0700260 if (cconn) {
261 out += snprintf(buf + out, len - out,
262 "%10s => Stack: %s Name: %*s "
263 "Version: %d.%d\n", "Cluster",
264 (*osb->osb_cluster_stack == '\0' ?
265 "o2cb" : osb->osb_cluster_stack),
266 cconn->cc_namelen, cconn->cc_name,
267 cconn->cc_version.pv_major,
268 cconn->cc_version.pv_minor);
269 }
Sunil Mushran50397502008-12-17 14:17:43 -0800270
jiangyiwenbfd97a02016-03-15 14:53:01 -0700271 spin_lock_irqsave(&osb->dc_task_lock, flags);
Sunil Mushran50397502008-12-17 14:17:43 -0800272 out += snprintf(buf + out, len - out,
273 "%10s => Pid: %d Count: %lu WakeSeq: %lu "
274 "WorkSeq: %lu\n", "DownCnvt",
Sunil Mushranc3d38842009-06-19 14:45:55 -0700275 (osb->dc_task ? task_pid_nr(osb->dc_task) : -1),
276 osb->blocked_lock_count, osb->dc_wake_sequence,
277 osb->dc_work_sequence);
jiangyiwenbfd97a02016-03-15 14:53:01 -0700278 spin_unlock_irqrestore(&osb->dc_task_lock, flags);
Sunil Mushran50397502008-12-17 14:17:43 -0800279
280 spin_lock(&osb->osb_lock);
281 out += snprintf(buf + out, len - out, "%10s => Pid: %d Nodes:",
282 "Recovery",
283 (osb->recovery_thread_task ?
284 task_pid_nr(osb->recovery_thread_task) : -1));
285 if (rm->rm_used == 0)
286 out += snprintf(buf + out, len - out, " None\n");
287 else {
288 for (i = 0; i < rm->rm_used; i++)
289 out += snprintf(buf + out, len - out, " %d",
290 rm->rm_entries[i]);
291 out += snprintf(buf + out, len - out, "\n");
292 }
293 spin_unlock(&osb->osb_lock);
294
295 out += snprintf(buf + out, len - out,
Goldwyn Rodrigues8fa9d172013-07-03 15:00:51 -0700296 "%10s => Pid: %d Interval: %lu\n", "Commit",
Sunil Mushranc3d38842009-06-19 14:45:55 -0700297 (osb->commit_task ? task_pid_nr(osb->commit_task) : -1),
Goldwyn Rodrigues8fa9d172013-07-03 15:00:51 -0700298 osb->osb_commit_interval);
Sunil Mushran50397502008-12-17 14:17:43 -0800299
300 out += snprintf(buf + out, len - out,
Sunil Mushranc3d38842009-06-19 14:45:55 -0700301 "%10s => State: %d TxnId: %lu NumTxns: %d\n",
Sunil Mushran50397502008-12-17 14:17:43 -0800302 "Journal", osb->journal->j_state,
Sunil Mushranc3d38842009-06-19 14:45:55 -0700303 osb->journal->j_trans_id,
304 atomic_read(&osb->journal->j_num_trans));
Sunil Mushran50397502008-12-17 14:17:43 -0800305
306 out += snprintf(buf + out, len - out,
307 "%10s => GlobalAllocs: %d LocalAllocs: %d "
308 "SubAllocs: %d LAWinMoves: %d SAExtends: %d\n",
309 "Stats",
310 atomic_read(&osb->alloc_stats.bitmap_data),
311 atomic_read(&osb->alloc_stats.local_data),
312 atomic_read(&osb->alloc_stats.bg_allocs),
313 atomic_read(&osb->alloc_stats.moves),
314 atomic_read(&osb->alloc_stats.bg_extends));
315
316 out += snprintf(buf + out, len - out,
317 "%10s => State: %u Descriptor: %llu Size: %u bits "
318 "Default: %u bits\n",
319 "LocalAlloc", osb->local_alloc_state,
320 (unsigned long long)osb->la_last_gd,
321 osb->local_alloc_bits, osb->local_alloc_default_bits);
322
323 spin_lock(&osb->osb_lock);
324 out += snprintf(buf + out, len - out,
Tiger Yangb89c5422010-01-25 14:11:06 +0800325 "%10s => InodeSlot: %d StolenInodes: %d, "
326 "MetaSlot: %d StolenMeta: %d\n", "Steal",
Sunil Mushran50397502008-12-17 14:17:43 -0800327 osb->s_inode_steal_slot,
Tiger Yangb89c5422010-01-25 14:11:06 +0800328 atomic_read(&osb->s_num_inodes_stolen),
329 osb->s_meta_steal_slot,
330 atomic_read(&osb->s_num_meta_stolen));
Sunil Mushran50397502008-12-17 14:17:43 -0800331 spin_unlock(&osb->osb_lock);
332
Sunil Mushrandf152c22009-06-22 11:40:07 -0700333 out += snprintf(buf + out, len - out, "OrphanScan => ");
334 out += snprintf(buf + out, len - out, "Local: %u Global: %u ",
335 os->os_count, os->os_seqno);
336 out += snprintf(buf + out, len - out, " Last Scan: ");
337 if (atomic_read(&os->os_state) == ORPHAN_SCAN_INACTIVE)
338 out += snprintf(buf + out, len - out, "Disabled\n");
339 else
340 out += snprintf(buf + out, len - out, "%lu seconds ago\n",
Deepa Dinamani395627b2016-12-12 16:41:23 -0800341 (unsigned long)(ktime_get_seconds() - os->os_scantime));
Sunil Mushrandf152c22009-06-22 11:40:07 -0700342
Sunil Mushran50397502008-12-17 14:17:43 -0800343 out += snprintf(buf + out, len - out, "%10s => %3s %10s\n",
344 "Slots", "Num", "RecoGen");
Sunil Mushran50397502008-12-17 14:17:43 -0800345 for (i = 0; i < osb->max_slots; ++i) {
346 out += snprintf(buf + out, len - out,
347 "%10s %c %3d %10d\n",
348 " ",
349 (i == osb->slot_num ? '*' : ' '),
350 i, osb->slot_recovery_generations[i]);
351 }
352
353 return out;
354}
355
356static int ocfs2_osb_debug_open(struct inode *inode, struct file *file)
357{
358 struct ocfs2_super *osb = inode->i_private;
359 char *buf = NULL;
360
361 buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
362 if (!buf)
363 goto bail;
364
365 i_size_write(inode, ocfs2_osb_dump(osb, buf, PAGE_SIZE));
366
367 file->private_data = buf;
368
369 return 0;
370bail:
371 return -ENOMEM;
372}
373
374static int ocfs2_debug_release(struct inode *inode, struct file *file)
375{
376 kfree(file->private_data);
377 return 0;
378}
379
380static ssize_t ocfs2_debug_read(struct file *file, char __user *buf,
381 size_t nbytes, loff_t *ppos)
382{
383 return simple_read_from_buffer(buf, nbytes, ppos, file->private_data,
384 i_size_read(file->f_mapping->host));
385}
386#else
387static int ocfs2_osb_debug_open(struct inode *inode, struct file *file)
388{
389 return 0;
390}
391static int ocfs2_debug_release(struct inode *inode, struct file *file)
392{
393 return 0;
394}
395static ssize_t ocfs2_debug_read(struct file *file, char __user *buf,
396 size_t nbytes, loff_t *ppos)
397{
398 return 0;
399}
400#endif /* CONFIG_DEBUG_FS */
401
Alexey Dobriyan828c0952009-10-01 15:43:56 -0700402static const struct file_operations ocfs2_osb_debug_fops = {
Sunil Mushran50397502008-12-17 14:17:43 -0800403 .open = ocfs2_osb_debug_open,
404 .release = ocfs2_debug_release,
405 .read = ocfs2_debug_read,
406 .llseek = generic_file_llseek,
407};
408
Mark Fashehccd979b2005-12-15 14:31:24 -0800409static int ocfs2_sync_fs(struct super_block *sb, int wait)
410{
Denis Chengbddb8eb32007-09-27 02:10:04 +0800411 int status;
Mark Fashehccd979b2005-12-15 14:31:24 -0800412 tid_t target;
413 struct ocfs2_super *osb = OCFS2_SB(sb);
414
Mark Fashehccd979b2005-12-15 14:31:24 -0800415 if (ocfs2_is_hard_readonly(osb))
416 return -EROFS;
417
418 if (wait) {
419 status = ocfs2_flush_truncate_log(osb);
420 if (status < 0)
421 mlog_errno(status);
422 } else {
423 ocfs2_schedule_truncate_log_flush(osb, 0);
424 }
425
Joel Becker2b4e30f2008-09-03 20:03:41 -0700426 if (jbd2_journal_start_commit(OCFS2_SB(sb)->journal->j_journal,
427 &target)) {
Mark Fashehccd979b2005-12-15 14:31:24 -0800428 if (wait)
Joel Becker2b4e30f2008-09-03 20:03:41 -0700429 jbd2_log_wait_commit(OCFS2_SB(sb)->journal->j_journal,
430 target);
Mark Fashehccd979b2005-12-15 14:31:24 -0800431 }
432 return 0;
433}
434
Jan Kara1a224ad2008-08-20 15:43:36 +0200435static int ocfs2_need_system_inode(struct ocfs2_super *osb, int ino)
436{
437 if (!OCFS2_HAS_RO_COMPAT_FEATURE(osb->sb, OCFS2_FEATURE_RO_COMPAT_USRQUOTA)
438 && (ino == USER_QUOTA_SYSTEM_INODE
439 || ino == LOCAL_USER_QUOTA_SYSTEM_INODE))
440 return 0;
441 if (!OCFS2_HAS_RO_COMPAT_FEATURE(osb->sb, OCFS2_FEATURE_RO_COMPAT_GRPQUOTA)
442 && (ino == GROUP_QUOTA_SYSTEM_INODE
443 || ino == LOCAL_GROUP_QUOTA_SYSTEM_INODE))
444 return 0;
445 return 1;
446}
447
Mark Fashehccd979b2005-12-15 14:31:24 -0800448static int ocfs2_init_global_system_inodes(struct ocfs2_super *osb)
449{
450 struct inode *new = NULL;
451 int status = 0;
452 int i;
453
Jan Kara5fa06132008-01-11 00:11:45 +0100454 new = ocfs2_iget(osb, osb->root_blkno, OCFS2_FI_FLAG_SYSFILE, 0);
Mark Fashehccd979b2005-12-15 14:31:24 -0800455 if (IS_ERR(new)) {
456 status = PTR_ERR(new);
457 mlog_errno(status);
458 goto bail;
459 }
460 osb->root_inode = new;
461
Jan Kara5fa06132008-01-11 00:11:45 +0100462 new = ocfs2_iget(osb, osb->system_dir_blkno, OCFS2_FI_FLAG_SYSFILE, 0);
Mark Fashehccd979b2005-12-15 14:31:24 -0800463 if (IS_ERR(new)) {
464 status = PTR_ERR(new);
465 mlog_errno(status);
466 goto bail;
467 }
468 osb->sys_root_inode = new;
469
470 for (i = OCFS2_FIRST_ONLINE_SYSTEM_INODE;
471 i <= OCFS2_LAST_GLOBAL_SYSTEM_INODE; i++) {
Jan Kara1a224ad2008-08-20 15:43:36 +0200472 if (!ocfs2_need_system_inode(osb, i))
473 continue;
Mark Fashehccd979b2005-12-15 14:31:24 -0800474 new = ocfs2_get_system_file_inode(osb, i, osb->slot_num);
475 if (!new) {
476 ocfs2_release_system_inodes(osb);
piaojun66aaeed2018-01-31 16:14:44 -0800477 status = ocfs2_is_soft_readonly(osb) ? -EROFS : -EINVAL;
Mark Fashehccd979b2005-12-15 14:31:24 -0800478 mlog_errno(status);
Mark Fashehccd979b2005-12-15 14:31:24 -0800479 mlog(ML_ERROR, "Unable to load system inode %d, "
480 "possibly corrupt fs?", i);
481 goto bail;
482 }
483 // the array now has one ref, so drop this one
484 iput(new);
485 }
486
487bail:
Tao Mac1e8d352011-03-07 16:43:21 +0800488 if (status)
489 mlog_errno(status);
Mark Fashehccd979b2005-12-15 14:31:24 -0800490 return status;
491}
492
493static int ocfs2_init_local_system_inodes(struct ocfs2_super *osb)
494{
495 struct inode *new = NULL;
496 int status = 0;
497 int i;
498
Mark Fashehccd979b2005-12-15 14:31:24 -0800499 for (i = OCFS2_LAST_GLOBAL_SYSTEM_INODE + 1;
500 i < NUM_SYSTEM_INODES;
501 i++) {
Jan Kara1a224ad2008-08-20 15:43:36 +0200502 if (!ocfs2_need_system_inode(osb, i))
503 continue;
Mark Fashehccd979b2005-12-15 14:31:24 -0800504 new = ocfs2_get_system_file_inode(osb, i, osb->slot_num);
505 if (!new) {
506 ocfs2_release_system_inodes(osb);
piaojun66aaeed2018-01-31 16:14:44 -0800507 status = ocfs2_is_soft_readonly(osb) ? -EROFS : -EINVAL;
Mark Fashehccd979b2005-12-15 14:31:24 -0800508 mlog(ML_ERROR, "status=%d, sysfile=%d, slot=%d\n",
509 status, i, osb->slot_num);
510 goto bail;
511 }
512 /* the array now has one ref, so drop this one */
513 iput(new);
514 }
515
516bail:
Tao Mac1e8d352011-03-07 16:43:21 +0800517 if (status)
518 mlog_errno(status);
Mark Fashehccd979b2005-12-15 14:31:24 -0800519 return status;
520}
521
Denis Chengbddb8eb32007-09-27 02:10:04 +0800522static void ocfs2_release_system_inodes(struct ocfs2_super *osb)
Mark Fashehccd979b2005-12-15 14:31:24 -0800523{
Denis Chengbddb8eb32007-09-27 02:10:04 +0800524 int i;
Mark Fashehccd979b2005-12-15 14:31:24 -0800525 struct inode *inode;
526
Tao Mab4d693f2010-08-16 16:58:21 +0800527 for (i = 0; i < NUM_GLOBAL_SYSTEM_INODES; i++) {
528 inode = osb->global_system_inodes[i];
Mark Fashehccd979b2005-12-15 14:31:24 -0800529 if (inode) {
530 iput(inode);
Tao Mab4d693f2010-08-16 16:58:21 +0800531 osb->global_system_inodes[i] = NULL;
Mark Fashehccd979b2005-12-15 14:31:24 -0800532 }
533 }
534
535 inode = osb->sys_root_inode;
536 if (inode) {
537 iput(inode);
538 osb->sys_root_inode = NULL;
539 }
540
541 inode = osb->root_inode;
542 if (inode) {
543 iput(inode);
544 osb->root_inode = NULL;
545 }
546
Tao Mab4d693f2010-08-16 16:58:21 +0800547 if (!osb->local_system_inodes)
Tao Mac1e8d352011-03-07 16:43:21 +0800548 return;
Tao Mab4d693f2010-08-16 16:58:21 +0800549
550 for (i = 0; i < NUM_LOCAL_SYSTEM_INODES * osb->max_slots; i++) {
551 if (osb->local_system_inodes[i]) {
552 iput(osb->local_system_inodes[i]);
553 osb->local_system_inodes[i] = NULL;
554 }
555 }
556
557 kfree(osb->local_system_inodes);
558 osb->local_system_inodes = NULL;
Mark Fashehccd979b2005-12-15 14:31:24 -0800559}
560
561/* We're allocating fs objects, use GFP_NOFS */
562static struct inode *ocfs2_alloc_inode(struct super_block *sb)
563{
564 struct ocfs2_inode_info *oi;
565
Christoph Lametere6b4f8d2006-12-06 20:33:14 -0800566 oi = kmem_cache_alloc(ocfs2_inode_cachep, GFP_NOFS);
Mark Fashehccd979b2005-12-15 14:31:24 -0800567 if (!oi)
568 return NULL;
569
Darrick J. Wong2931cdc2014-04-03 14:46:48 -0700570 oi->i_sync_tid = 0;
571 oi->i_datasync_tid = 0;
Jan Kara1c92ec62014-09-29 15:02:51 +0200572 memset(&oi->i_dquot, 0, sizeof(oi->i_dquot));
Darrick J. Wong2931cdc2014-04-03 14:46:48 -0700573
Joel Becker2b4e30f2008-09-03 20:03:41 -0700574 jbd2_journal_init_jbd_inode(&oi->ip_jinode, &oi->vfs_inode);
Mark Fashehccd979b2005-12-15 14:31:24 -0800575 return &oi->vfs_inode;
576}
577
Nick Pigginfa0d7e3d2011-01-07 17:49:49 +1100578static void ocfs2_i_callback(struct rcu_head *head)
579{
580 struct inode *inode = container_of(head, struct inode, i_rcu);
Nick Pigginfa0d7e3d2011-01-07 17:49:49 +1100581 kmem_cache_free(ocfs2_inode_cachep, OCFS2_I(inode));
582}
583
Mark Fashehccd979b2005-12-15 14:31:24 -0800584static void ocfs2_destroy_inode(struct inode *inode)
585{
Nick Pigginfa0d7e3d2011-01-07 17:49:49 +1100586 call_rcu(&inode->i_rcu, ocfs2_i_callback);
Mark Fashehccd979b2005-12-15 14:31:24 -0800587}
588
Mark Fasheh5a254032007-07-20 12:56:16 -0700589static unsigned long long ocfs2_max_file_offset(unsigned int bbits,
590 unsigned int cbits)
Mark Fashehccd979b2005-12-15 14:31:24 -0800591{
Mark Fasheh5a254032007-07-20 12:56:16 -0700592 unsigned int bytes = 1 << cbits;
593 unsigned int trim = bytes;
594 unsigned int bitshift = 32;
Mark Fashehccd979b2005-12-15 14:31:24 -0800595
Mark Fasheh5a254032007-07-20 12:56:16 -0700596 /*
597 * i_size and all block offsets in ocfs2 are always 64 bits
598 * wide. i_clusters is 32 bits, in cluster-sized units. So on
599 * 64 bit platforms, cluster size will be the limiting factor.
Mark Fashehccd979b2005-12-15 14:31:24 -0800600 */
601
602#if BITS_PER_LONG == 32
Bartlomiej Zolnierkiewicz90c699a2009-06-19 08:08:50 +0200603# if defined(CONFIG_LBDAF)
Alexey Dobriyan2ecd05a2006-10-11 01:22:05 -0700604 BUILD_BUG_ON(sizeof(sector_t) != 8);
Mark Fasheh5a254032007-07-20 12:56:16 -0700605 /*
606 * We might be limited by page cache size.
607 */
Kirill A. Shutemov09cbfea2016-04-01 15:29:47 +0300608 if (bytes > PAGE_SIZE) {
609 bytes = PAGE_SIZE;
Mark Fasheh5a254032007-07-20 12:56:16 -0700610 trim = 1;
611 /*
612 * Shift by 31 here so that we don't get larger than
613 * MAX_LFS_FILESIZE
614 */
615 bitshift = 31;
616 }
Mark Fashehccd979b2005-12-15 14:31:24 -0800617# else
Mark Fasheh5a254032007-07-20 12:56:16 -0700618 /*
619 * We are limited by the size of sector_t. Use block size, as
620 * that's what we expose to the VFS.
621 */
622 bytes = 1 << bbits;
623 trim = 1;
624 bitshift = 31;
Mark Fashehccd979b2005-12-15 14:31:24 -0800625# endif
626#endif
627
Mark Fasheh5a254032007-07-20 12:56:16 -0700628 /*
629 * Trim by a whole cluster when we can actually approach the
630 * on-disk limits. Otherwise we can overflow i_clusters when
631 * an extent start is at the max offset.
632 */
633 return (((unsigned long long)bytes) << bitshift) - trim;
Mark Fashehccd979b2005-12-15 14:31:24 -0800634}
635
636static int ocfs2_remount(struct super_block *sb, int *flags, char *data)
637{
638 int incompat_features;
639 int ret = 0;
Tiger Yangc0123ad2007-09-08 00:16:10 +0800640 struct mount_options parsed_options;
Mark Fashehccd979b2005-12-15 14:31:24 -0800641 struct ocfs2_super *osb = OCFS2_SB(sb);
Sunil Mushran2c442712010-10-07 15:23:50 -0700642 u32 tmp;
Mark Fashehccd979b2005-12-15 14:31:24 -0800643
Theodore Ts'o02b99842014-03-13 10:14:33 -0400644 sync_filesystem(sb);
645
Jan Kara5297aad2009-10-15 14:54:04 +0200646 if (!ocfs2_parse_options(sb, data, &parsed_options, 1) ||
647 !ocfs2_check_set_options(sb, &parsed_options)) {
Mark Fashehccd979b2005-12-15 14:31:24 -0800648 ret = -EINVAL;
649 goto out;
650 }
651
Sunil Mushran2c442712010-10-07 15:23:50 -0700652 tmp = OCFS2_MOUNT_HB_LOCAL | OCFS2_MOUNT_HB_GLOBAL |
653 OCFS2_MOUNT_HB_NONE;
654 if ((osb->s_mount_opt & tmp) != (parsed_options.mount_opt & tmp)) {
Mark Fashehccd979b2005-12-15 14:31:24 -0800655 ret = -EINVAL;
656 mlog(ML_ERROR, "Cannot change heartbeat mode on remount\n");
657 goto out;
658 }
659
660 if ((osb->s_mount_opt & OCFS2_MOUNT_DATA_WRITEBACK) !=
Tiger Yangc0123ad2007-09-08 00:16:10 +0800661 (parsed_options.mount_opt & OCFS2_MOUNT_DATA_WRITEBACK)) {
Mark Fashehccd979b2005-12-15 14:31:24 -0800662 ret = -EINVAL;
663 mlog(ML_ERROR, "Cannot change data mode on remount\n");
664 goto out;
665 }
666
Joel Becker12462f12008-09-03 20:03:40 -0700667 /* Probably don't want this on remount; it might
668 * mess with other nodes */
669 if (!(osb->s_mount_opt & OCFS2_MOUNT_INODE64) &&
670 (parsed_options.mount_opt & OCFS2_MOUNT_INODE64)) {
671 ret = -EINVAL;
672 mlog(ML_ERROR, "Cannot enable inode64 on remount\n");
673 goto out;
674 }
675
Mark Fashehccd979b2005-12-15 14:31:24 -0800676 /* We're going to/from readonly mode. */
David Howellsbc98a422017-07-17 08:45:34 +0100677 if ((bool)(*flags & MS_RDONLY) != sb_rdonly(sb)) {
Jan Kara19ece542008-08-21 20:13:17 +0200678 /* Disable quota accounting before remounting RO */
679 if (*flags & MS_RDONLY) {
680 ret = ocfs2_susp_quotas(osb, 0);
681 if (ret < 0)
682 goto out;
683 }
Mark Fashehccd979b2005-12-15 14:31:24 -0800684 /* Lock here so the check of HARD_RO and the potential
685 * setting of SOFT_RO is atomic. */
686 spin_lock(&osb->osb_lock);
687 if (osb->osb_flags & OCFS2_OSB_HARD_RO) {
688 mlog(ML_ERROR, "Remount on readonly device is forbidden.\n");
689 ret = -EROFS;
690 goto unlock_osb;
691 }
692
693 if (*flags & MS_RDONLY) {
Mark Fashehccd979b2005-12-15 14:31:24 -0800694 sb->s_flags |= MS_RDONLY;
695 osb->osb_flags |= OCFS2_OSB_SOFT_RO;
696 } else {
Mark Fashehccd979b2005-12-15 14:31:24 -0800697 if (osb->osb_flags & OCFS2_OSB_ERROR_FS) {
698 mlog(ML_ERROR, "Cannot remount RDWR "
699 "filesystem due to previous errors.\n");
700 ret = -EROFS;
701 goto unlock_osb;
702 }
703 incompat_features = OCFS2_HAS_RO_COMPAT_FEATURE(sb, ~OCFS2_FEATURE_RO_COMPAT_SUPP);
704 if (incompat_features) {
705 mlog(ML_ERROR, "Cannot remount RDWR because "
706 "of unsupported optional features "
707 "(%x).\n", incompat_features);
708 ret = -EINVAL;
709 goto unlock_osb;
710 }
711 sb->s_flags &= ~MS_RDONLY;
712 osb->osb_flags &= ~OCFS2_OSB_SOFT_RO;
713 }
Tao Ma32a42d32011-02-23 21:29:08 +0800714 trace_ocfs2_remount(sb->s_flags, osb->osb_flags, *flags);
Mark Fashehccd979b2005-12-15 14:31:24 -0800715unlock_osb:
716 spin_unlock(&osb->osb_lock);
Jan Kara19ece542008-08-21 20:13:17 +0200717 /* Enable quota accounting after remounting RW */
718 if (!ret && !(*flags & MS_RDONLY)) {
719 if (sb_any_quota_suspended(sb))
720 ret = ocfs2_susp_quotas(osb, 1);
721 else
722 ret = ocfs2_enable_quotas(osb);
723 if (ret < 0) {
724 /* Return back changes... */
725 spin_lock(&osb->osb_lock);
726 sb->s_flags |= MS_RDONLY;
727 osb->osb_flags |= OCFS2_OSB_SOFT_RO;
728 spin_unlock(&osb->osb_lock);
729 goto out;
730 }
731 }
Mark Fashehccd979b2005-12-15 14:31:24 -0800732 }
733
734 if (!ret) {
Mark Fashehccd979b2005-12-15 14:31:24 -0800735 /* Only save off the new mount options in case of a successful
736 * remount. */
Tiger Yangc0123ad2007-09-08 00:16:10 +0800737 osb->s_mount_opt = parsed_options.mount_opt;
738 osb->s_atime_quantum = parsed_options.atime_quantum;
739 osb->preferred_slot = parsed_options.slot;
Mark Fashehd147b3d2007-11-07 14:40:36 -0800740 if (parsed_options.commit_interval)
741 osb->osb_commit_interval = parsed_options.commit_interval;
Mark Fashehe001e792007-11-07 14:21:45 -0800742
743 if (!ocfs2_is_hard_readonly(osb))
744 ocfs2_set_journal_params(osb);
Jan Kara57b09bb2009-10-15 14:54:05 +0200745
746 sb->s_flags = (sb->s_flags & ~MS_POSIXACL) |
747 ((osb->s_mount_opt & OCFS2_MOUNT_POSIX_ACL) ?
748 MS_POSIXACL : 0);
Mark Fashehccd979b2005-12-15 14:31:24 -0800749 }
750out:
751 return ret;
752}
753
754static int ocfs2_sb_probe(struct super_block *sb,
755 struct buffer_head **bh,
Joel Becker73be1922009-01-06 14:57:08 -0800756 int *sector_size,
757 struct ocfs2_blockcheck_stats *stats)
Mark Fashehccd979b2005-12-15 14:31:24 -0800758{
Denis Chengbddb8eb32007-09-27 02:10:04 +0800759 int status, tmpstat;
Mark Fashehccd979b2005-12-15 14:31:24 -0800760 struct ocfs1_vol_disk_hdr *hdr;
761 struct ocfs2_dinode *di;
762 int blksize;
763
764 *bh = NULL;
765
766 /* may be > 512 */
Martin K. Petersene1defc42009-05-22 17:17:49 -0400767 *sector_size = bdev_logical_block_size(sb->s_bdev);
Mark Fashehccd979b2005-12-15 14:31:24 -0800768 if (*sector_size > OCFS2_MAX_BLOCKSIZE) {
769 mlog(ML_ERROR, "Hardware sector size too large: %d (max=%d)\n",
770 *sector_size, OCFS2_MAX_BLOCKSIZE);
771 status = -EINVAL;
772 goto bail;
773 }
774
775 /* Can this really happen? */
776 if (*sector_size < OCFS2_MIN_BLOCKSIZE)
777 *sector_size = OCFS2_MIN_BLOCKSIZE;
778
779 /* check block zero for old format */
780 status = ocfs2_get_sector(sb, bh, 0, *sector_size);
781 if (status < 0) {
782 mlog_errno(status);
783 goto bail;
784 }
785 hdr = (struct ocfs1_vol_disk_hdr *) (*bh)->b_data;
786 if (hdr->major_version == OCFS1_MAJOR_VERSION) {
787 mlog(ML_ERROR, "incompatible version: %u.%u\n",
788 hdr->major_version, hdr->minor_version);
789 status = -EINVAL;
790 }
791 if (memcmp(hdr->signature, OCFS1_VOLUME_SIGNATURE,
792 strlen(OCFS1_VOLUME_SIGNATURE)) == 0) {
793 mlog(ML_ERROR, "incompatible volume signature: %8s\n",
794 hdr->signature);
795 status = -EINVAL;
796 }
797 brelse(*bh);
798 *bh = NULL;
799 if (status < 0) {
800 mlog(ML_ERROR, "This is an ocfs v1 filesystem which must be "
801 "upgraded before mounting with ocfs v2\n");
802 goto bail;
803 }
804
805 /*
806 * Now check at magic offset for 512, 1024, 2048, 4096
807 * blocksizes. 4096 is the maximum blocksize because it is
808 * the minimum clustersize.
809 */
810 status = -EINVAL;
811 for (blksize = *sector_size;
812 blksize <= OCFS2_MAX_BLOCKSIZE;
813 blksize <<= 1) {
814 tmpstat = ocfs2_get_sector(sb, bh,
815 OCFS2_SUPER_BLOCK_BLKNO,
816 blksize);
817 if (tmpstat < 0) {
818 status = tmpstat;
819 mlog_errno(status);
Joel Beckerfb5cbe92009-10-28 22:28:24 -0700820 break;
Mark Fashehccd979b2005-12-15 14:31:24 -0800821 }
822 di = (struct ocfs2_dinode *) (*bh)->b_data;
Joel Becker73be1922009-01-06 14:57:08 -0800823 memset(stats, 0, sizeof(struct ocfs2_blockcheck_stats));
Jan Kara1c1d9792009-07-22 13:17:19 +0200824 spin_lock_init(&stats->b_lock);
Joel Beckerfb5cbe92009-10-28 22:28:24 -0700825 tmpstat = ocfs2_verify_volume(di, *bh, blksize, stats);
826 if (tmpstat < 0) {
827 brelse(*bh);
828 *bh = NULL;
829 }
830 if (tmpstat != -EAGAIN) {
831 status = tmpstat;
Mark Fashehccd979b2005-12-15 14:31:24 -0800832 break;
Joel Beckerfb5cbe92009-10-28 22:28:24 -0700833 }
Mark Fashehccd979b2005-12-15 14:31:24 -0800834 }
835
836bail:
837 return status;
838}
839
Sunil Mushranc271c5c2006-12-05 17:56:35 -0800840static int ocfs2_verify_heartbeat(struct ocfs2_super *osb)
841{
Sunil Mushran2c442712010-10-07 15:23:50 -0700842 u32 hb_enabled = OCFS2_MOUNT_HB_LOCAL | OCFS2_MOUNT_HB_GLOBAL;
843
844 if (osb->s_mount_opt & hb_enabled) {
845 if (ocfs2_mount_local(osb)) {
Sunil Mushranc271c5c2006-12-05 17:56:35 -0800846 mlog(ML_ERROR, "Cannot heartbeat on a locally "
847 "mounted device.\n");
848 return -EINVAL;
849 }
Sunil Mushran2c442712010-10-07 15:23:50 -0700850 if (ocfs2_userspace_stack(osb)) {
Joel Beckerb61817e2008-02-01 15:08:23 -0800851 mlog(ML_ERROR, "Userspace stack expected, but "
852 "o2cb heartbeat arguments passed to mount\n");
853 return -EINVAL;
854 }
Sunil Mushran2c442712010-10-07 15:23:50 -0700855 if (((osb->s_mount_opt & OCFS2_MOUNT_HB_GLOBAL) &&
856 !ocfs2_cluster_o2cb_global_heartbeat(osb)) ||
857 ((osb->s_mount_opt & OCFS2_MOUNT_HB_LOCAL) &&
858 ocfs2_cluster_o2cb_global_heartbeat(osb))) {
859 mlog(ML_ERROR, "Mismatching o2cb heartbeat modes\n");
860 return -EINVAL;
861 }
Joel Beckerb61817e2008-02-01 15:08:23 -0800862 }
863
Sunil Mushran2c442712010-10-07 15:23:50 -0700864 if (!(osb->s_mount_opt & hb_enabled)) {
Joel Beckerb61817e2008-02-01 15:08:23 -0800865 if (!ocfs2_mount_local(osb) && !ocfs2_is_hard_readonly(osb) &&
866 !ocfs2_userspace_stack(osb)) {
Sunil Mushranc271c5c2006-12-05 17:56:35 -0800867 mlog(ML_ERROR, "Heartbeat has to be started to mount "
868 "a read-write clustered device.\n");
869 return -EINVAL;
870 }
871 }
872
873 return 0;
874}
875
Joel Beckerb61817e2008-02-01 15:08:23 -0800876/*
877 * If we're using a userspace stack, mount should have passed
878 * a name that matches the disk. If not, mount should not
879 * have passed a stack.
880 */
881static int ocfs2_verify_userspace_stack(struct ocfs2_super *osb,
882 struct mount_options *mopt)
883{
884 if (!ocfs2_userspace_stack(osb) && mopt->cluster_stack[0]) {
885 mlog(ML_ERROR,
886 "cluster stack passed to mount, but this filesystem "
887 "does not support it\n");
888 return -EINVAL;
889 }
890
891 if (ocfs2_userspace_stack(osb) &&
892 strncmp(osb->osb_cluster_stack, mopt->cluster_stack,
893 OCFS2_STACK_LABEL_LEN)) {
894 mlog(ML_ERROR,
895 "cluster stack passed to mount (\"%s\") does not "
896 "match the filesystem (\"%s\")\n",
897 mopt->cluster_stack,
898 osb->osb_cluster_stack);
899 return -EINVAL;
900 }
901
902 return 0;
903}
904
Jan Kara19ece542008-08-21 20:13:17 +0200905static int ocfs2_susp_quotas(struct ocfs2_super *osb, int unsuspend)
906{
907 int type;
908 struct super_block *sb = osb->sb;
Jan Kara52362812014-09-10 21:06:39 +0200909 unsigned int feature[OCFS2_MAXQUOTAS] = {
910 OCFS2_FEATURE_RO_COMPAT_USRQUOTA,
911 OCFS2_FEATURE_RO_COMPAT_GRPQUOTA};
Jan Kara19ece542008-08-21 20:13:17 +0200912 int status = 0;
913
Jan Kara52362812014-09-10 21:06:39 +0200914 for (type = 0; type < OCFS2_MAXQUOTAS; type++) {
Jan Kara19ece542008-08-21 20:13:17 +0200915 if (!OCFS2_HAS_RO_COMPAT_FEATURE(sb, feature[type]))
916 continue;
917 if (unsuspend)
Christoph Hellwig0f0dd622010-05-19 07:16:41 -0400918 status = dquot_resume(sb, type);
Jan Karaeea7feb2010-05-13 22:14:53 +0200919 else {
920 struct ocfs2_mem_dqinfo *oinfo;
921
922 /* Cancel periodic syncing before suspending */
923 oinfo = sb_dqinfo(sb, type)->dqi_priv;
924 cancel_delayed_work_sync(&oinfo->dqi_sync_work);
Christoph Hellwig0f0dd622010-05-19 07:16:41 -0400925 status = dquot_suspend(sb, type);
Jan Karaeea7feb2010-05-13 22:14:53 +0200926 }
Jan Kara19ece542008-08-21 20:13:17 +0200927 if (status < 0)
928 break;
929 }
930 if (status < 0)
931 mlog(ML_ERROR, "Failed to suspend/unsuspend quotas on "
932 "remount (error = %d).\n", status);
933 return status;
934}
935
936static int ocfs2_enable_quotas(struct ocfs2_super *osb)
937{
Jan Kara52362812014-09-10 21:06:39 +0200938 struct inode *inode[OCFS2_MAXQUOTAS] = { NULL, NULL };
Jan Kara19ece542008-08-21 20:13:17 +0200939 struct super_block *sb = osb->sb;
Jan Kara52362812014-09-10 21:06:39 +0200940 unsigned int feature[OCFS2_MAXQUOTAS] = {
941 OCFS2_FEATURE_RO_COMPAT_USRQUOTA,
942 OCFS2_FEATURE_RO_COMPAT_GRPQUOTA};
943 unsigned int ino[OCFS2_MAXQUOTAS] = {
944 LOCAL_USER_QUOTA_SYSTEM_INODE,
Jan Kara19ece542008-08-21 20:13:17 +0200945 LOCAL_GROUP_QUOTA_SYSTEM_INODE };
946 int status;
947 int type;
948
949 sb_dqopt(sb)->flags |= DQUOT_QUOTA_SYS_FILE | DQUOT_NEGATIVE_USAGE;
Jan Kara52362812014-09-10 21:06:39 +0200950 for (type = 0; type < OCFS2_MAXQUOTAS; type++) {
Jan Kara19ece542008-08-21 20:13:17 +0200951 if (!OCFS2_HAS_RO_COMPAT_FEATURE(sb, feature[type]))
952 continue;
953 inode[type] = ocfs2_get_system_file_inode(osb, ino[type],
954 osb->slot_num);
955 if (!inode[type]) {
956 status = -ENOENT;
957 goto out_quota_off;
958 }
Christoph Hellwig287a8092010-05-19 07:16:45 -0400959 status = dquot_enable(inode[type], type, QFMT_OCFS2,
960 DQUOT_USAGE_ENABLED);
Jan Kara19ece542008-08-21 20:13:17 +0200961 if (status < 0)
962 goto out_quota_off;
963 }
964
Jan Kara52362812014-09-10 21:06:39 +0200965 for (type = 0; type < OCFS2_MAXQUOTAS; type++)
Jan Kara19ece542008-08-21 20:13:17 +0200966 iput(inode[type]);
967 return 0;
968out_quota_off:
969 ocfs2_disable_quotas(osb);
Jan Kara52362812014-09-10 21:06:39 +0200970 for (type = 0; type < OCFS2_MAXQUOTAS; type++)
Jan Kara19ece542008-08-21 20:13:17 +0200971 iput(inode[type]);
972 mlog_errno(status);
973 return status;
974}
975
976static void ocfs2_disable_quotas(struct ocfs2_super *osb)
977{
978 int type;
979 struct inode *inode;
980 struct super_block *sb = osb->sb;
Jan Karac06bcbf2010-05-13 22:14:53 +0200981 struct ocfs2_mem_dqinfo *oinfo;
Jan Kara19ece542008-08-21 20:13:17 +0200982
983 /* We mostly ignore errors in this function because there's not much
984 * we can do when we see them */
Jan Kara52362812014-09-10 21:06:39 +0200985 for (type = 0; type < OCFS2_MAXQUOTAS; type++) {
Jan Kara19ece542008-08-21 20:13:17 +0200986 if (!sb_has_quota_loaded(sb, type))
987 continue;
Luís Henriques2b88ccb2023-05-22 11:21:12 +0100988 if (!sb_has_quota_suspended(sb, type)) {
989 oinfo = sb_dqinfo(sb, type)->dqi_priv;
990 cancel_delayed_work_sync(&oinfo->dqi_sync_work);
991 }
Jan Kara19ece542008-08-21 20:13:17 +0200992 inode = igrab(sb->s_dquot.files[type]);
993 /* Turn off quotas. This will remove all dquot structures from
994 * memory and so they will be automatically synced to global
995 * quota files */
Christoph Hellwig0f0dd622010-05-19 07:16:41 -0400996 dquot_disable(sb, type, DQUOT_USAGE_ENABLED |
997 DQUOT_LIMITS_ENABLED);
Jan Kara19ece542008-08-21 20:13:17 +0200998 if (!inode)
999 continue;
1000 iput(inode);
1001 }
1002}
1003
Mark Fashehccd979b2005-12-15 14:31:24 -08001004static int ocfs2_fill_super(struct super_block *sb, void *data, int silent)
1005{
1006 struct dentry *root;
1007 int status, sector_size;
Tiger Yangc0123ad2007-09-08 00:16:10 +08001008 struct mount_options parsed_options;
Mark Fashehccd979b2005-12-15 14:31:24 -08001009 struct inode *inode = NULL;
1010 struct ocfs2_super *osb = NULL;
1011 struct buffer_head *bh = NULL;
Goldwyn Rodrigues49fa8142013-08-28 16:35:21 -07001012 char nodestr[12];
Joel Becker73be1922009-01-06 14:57:08 -08001013 struct ocfs2_blockcheck_stats stats;
Mark Fashehccd979b2005-12-15 14:31:24 -08001014
Tao Ma32a42d32011-02-23 21:29:08 +08001015 trace_ocfs2_fill_super(sb, data, silent);
Mark Fashehccd979b2005-12-15 14:31:24 -08001016
Tiger Yangc0123ad2007-09-08 00:16:10 +08001017 if (!ocfs2_parse_options(sb, data, &parsed_options, 0)) {
Mark Fashehccd979b2005-12-15 14:31:24 -08001018 status = -EINVAL;
1019 goto read_super_error;
1020 }
1021
1022 /* probe for superblock */
Joel Becker73be1922009-01-06 14:57:08 -08001023 status = ocfs2_sb_probe(sb, &bh, &sector_size, &stats);
Mark Fashehccd979b2005-12-15 14:31:24 -08001024 if (status < 0) {
1025 mlog(ML_ERROR, "superblock probe failed!\n");
1026 goto read_super_error;
1027 }
1028
Joel Becker73be1922009-01-06 14:57:08 -08001029 status = ocfs2_initialize_super(sb, bh, sector_size, &stats);
Mark Fashehccd979b2005-12-15 14:31:24 -08001030 osb = OCFS2_SB(sb);
1031 if (status < 0) {
1032 mlog_errno(status);
1033 goto read_super_error;
1034 }
1035 brelse(bh);
1036 bh = NULL;
Tiger Yanga68979b2008-11-14 11:17:52 +08001037
Jan Kara5297aad2009-10-15 14:54:04 +02001038 if (!ocfs2_check_set_options(sb, &parsed_options)) {
1039 status = -EINVAL;
1040 goto read_super_error;
1041 }
Tiger Yangc0123ad2007-09-08 00:16:10 +08001042 osb->s_mount_opt = parsed_options.mount_opt;
1043 osb->s_atime_quantum = parsed_options.atime_quantum;
1044 osb->preferred_slot = parsed_options.slot;
Mark Fashehd147b3d2007-11-07 14:40:36 -08001045 osb->osb_commit_interval = parsed_options.commit_interval;
Mark Fasheh73c8a802010-04-05 18:17:13 -07001046
1047 ocfs2_la_set_sizes(osb, parsed_options.localalloc_opt);
Mark Fashehd02f00c2009-12-07 13:10:48 -08001048 osb->osb_resv_level = parsed_options.resv_level;
Mark Fasheh83f92312010-04-05 18:17:16 -07001049 osb->osb_dir_resv_level = parsed_options.resv_level;
1050 if (parsed_options.dir_resv_level == -1)
1051 osb->osb_dir_resv_level = parsed_options.resv_level;
1052 else
1053 osb->osb_dir_resv_level = parsed_options.dir_resv_level;
Mark Fashehccd979b2005-12-15 14:31:24 -08001054
Joel Beckerb61817e2008-02-01 15:08:23 -08001055 status = ocfs2_verify_userspace_stack(osb, &parsed_options);
1056 if (status)
1057 goto read_super_error;
1058
Mark Fashehccd979b2005-12-15 14:31:24 -08001059 sb->s_magic = OCFS2_SUPER_MAGIC;
1060
Al Viro9e1f1de2011-06-03 18:24:58 -04001061 sb->s_flags = (sb->s_flags & ~(MS_POSIXACL | MS_NOSEC)) |
Tiger Yanga68979b2008-11-14 11:17:52 +08001062 ((osb->s_mount_opt & OCFS2_MOUNT_POSIX_ACL) ? MS_POSIXACL : 0);
1063
Mark Fashehccd979b2005-12-15 14:31:24 -08001064 /* Hard readonly mode only if: bdev_read_only, MS_RDONLY,
1065 * heartbeat=none */
1066 if (bdev_read_only(sb->s_bdev)) {
David Howellsbc98a422017-07-17 08:45:34 +01001067 if (!sb_rdonly(sb)) {
Mark Fashehccd979b2005-12-15 14:31:24 -08001068 status = -EACCES;
1069 mlog(ML_ERROR, "Readonly device detected but readonly "
1070 "mount was not specified.\n");
1071 goto read_super_error;
1072 }
1073
1074 /* You should not be able to start a local heartbeat
1075 * on a readonly device. */
1076 if (osb->s_mount_opt & OCFS2_MOUNT_HB_LOCAL) {
1077 status = -EROFS;
1078 mlog(ML_ERROR, "Local heartbeat specified on readonly "
1079 "device.\n");
1080 goto read_super_error;
1081 }
1082
1083 status = ocfs2_check_journals_nolocks(osb);
1084 if (status < 0) {
1085 if (status == -EROFS)
1086 mlog(ML_ERROR, "Recovery required on readonly "
1087 "file system, but write access is "
1088 "unavailable.\n");
1089 else
Sunil Mushran2bd63212010-01-25 16:57:38 -08001090 mlog_errno(status);
Mark Fashehccd979b2005-12-15 14:31:24 -08001091 goto read_super_error;
1092 }
1093
1094 ocfs2_set_ro_flag(osb, 1);
1095
Sunil Mushran619c2002011-07-24 10:34:54 -07001096 printk(KERN_NOTICE "ocfs2: Readonly device (%s) detected. "
1097 "Cluster services will not be used for this mount. "
1098 "Recovery will be skipped.\n", osb->dev_str);
Mark Fashehccd979b2005-12-15 14:31:24 -08001099 }
1100
1101 if (!ocfs2_is_hard_readonly(osb)) {
David Howellsbc98a422017-07-17 08:45:34 +01001102 if (sb_rdonly(sb))
Mark Fashehccd979b2005-12-15 14:31:24 -08001103 ocfs2_set_ro_flag(osb, 0);
1104 }
1105
Sunil Mushranc271c5c2006-12-05 17:56:35 -08001106 status = ocfs2_verify_heartbeat(osb);
1107 if (status < 0) {
1108 mlog_errno(status);
1109 goto read_super_error;
1110 }
1111
Mark Fashehccd979b2005-12-15 14:31:24 -08001112 osb->osb_debug_root = debugfs_create_dir(osb->uuid_str,
1113 ocfs2_debugfs_root);
Linus Torvalds8f443e22015-04-21 09:17:28 -07001114 if (!osb->osb_debug_root) {
Mark Fashehccd979b2005-12-15 14:31:24 -08001115 status = -EINVAL;
1116 mlog(ML_ERROR, "Unable to create per-mount debugfs root.\n");
1117 goto read_super_error;
1118 }
1119
Sunil Mushran50397502008-12-17 14:17:43 -08001120 osb->osb_ctxt = debugfs_create_file("fs_state", S_IFREG|S_IRUSR,
1121 osb->osb_debug_root,
1122 osb,
1123 &ocfs2_osb_debug_fops);
Linus Torvalds8f443e22015-04-21 09:17:28 -07001124 if (!osb->osb_ctxt) {
Sunil Mushran50397502008-12-17 14:17:43 -08001125 status = -EINVAL;
1126 mlog_errno(status);
1127 goto read_super_error;
1128 }
1129
Joel Becker73be1922009-01-06 14:57:08 -08001130 if (ocfs2_meta_ecc(osb)) {
1131 status = ocfs2_blockcheck_stats_debugfs_install(
1132 &osb->osb_ecc_stats,
1133 osb->osb_debug_root);
1134 if (status) {
1135 mlog(ML_ERROR,
1136 "Unable to create blockcheck statistics "
1137 "files\n");
1138 goto read_super_error;
1139 }
1140 }
1141
Mark Fashehccd979b2005-12-15 14:31:24 -08001142 status = ocfs2_mount_volume(sb);
Mark Fashehccd979b2005-12-15 14:31:24 -08001143 if (status < 0)
1144 goto read_super_error;
1145
Al Virobe0d93f2012-02-12 21:46:49 -05001146 if (osb->root_inode)
1147 inode = igrab(osb->root_inode);
1148
Mark Fashehccd979b2005-12-15 14:31:24 -08001149 if (!inode) {
1150 status = -EIO;
1151 mlog_errno(status);
1152 goto read_super_error;
1153 }
1154
Al Viro48fde702012-01-08 22:15:13 -05001155 root = d_make_root(inode);
Mark Fashehccd979b2005-12-15 14:31:24 -08001156 if (!root) {
1157 status = -ENOMEM;
1158 mlog_errno(status);
1159 goto read_super_error;
1160 }
1161
1162 sb->s_root = root;
1163
1164 ocfs2_complete_mount_recovery(osb);
1165
Sunil Mushranc271c5c2006-12-05 17:56:35 -08001166 if (ocfs2_mount_local(osb))
1167 snprintf(nodestr, sizeof(nodestr), "local");
1168 else
Joel Becker19fdb622008-01-30 15:38:24 -08001169 snprintf(nodestr, sizeof(nodestr), "%u", osb->node_num);
Sunil Mushranc271c5c2006-12-05 17:56:35 -08001170
1171 printk(KERN_INFO "ocfs2: Mounting device (%s) on (node %s, slot %d) "
Sunil Mushran781ee3e2006-04-27 16:41:31 -07001172 "with %s data mode.\n",
Sunil Mushranc271c5c2006-12-05 17:56:35 -08001173 osb->dev_str, nodestr, osb->slot_num,
Mark Fashehccd979b2005-12-15 14:31:24 -08001174 osb->s_mount_opt & OCFS2_MOUNT_DATA_WRITEBACK ? "writeback" :
1175 "ordered");
1176
1177 atomic_set(&osb->vol_state, VOLUME_MOUNTED);
1178 wake_up(&osb->osb_mount_event);
1179
Jan Kara19ece542008-08-21 20:13:17 +02001180 /* Now we can initialize quotas because we can afford to wait
1181 * for cluster locks recovery now. That also means that truncation
1182 * log recovery can happen but that waits for proper quota setup */
David Howellsbc98a422017-07-17 08:45:34 +01001183 if (!sb_rdonly(sb)) {
Jan Kara19ece542008-08-21 20:13:17 +02001184 status = ocfs2_enable_quotas(osb);
1185 if (status < 0) {
1186 /* We have to err-out specially here because
1187 * s_root is already set */
1188 mlog_errno(status);
1189 atomic_set(&osb->vol_state, VOLUME_DISABLED);
1190 wake_up(&osb->osb_mount_event);
Jan Kara19ece542008-08-21 20:13:17 +02001191 return status;
1192 }
1193 }
1194
1195 ocfs2_complete_quota_recovery(osb);
1196
1197 /* Now we wake up again for processes waiting for quotas */
1198 atomic_set(&osb->vol_state, VOLUME_MOUNTED_QUOTAS);
1199 wake_up(&osb->osb_mount_event);
1200
Sunil Mushrandf152c22009-06-22 11:40:07 -07001201 /* Start this when the mount is almost sure of being successful */
Jeff Mahoney8b712cd2009-07-07 17:22:12 -04001202 ocfs2_orphan_scan_start(osb);
Sunil Mushrandf152c22009-06-22 11:40:07 -07001203
Gang Hea849d462016-03-22 14:24:27 -07001204 /* Create filecheck sysfile /sys/fs/ocfs2/<devname>/filecheck */
1205 ocfs2_filecheck_create_sysfs(sb);
1206
Mark Fashehccd979b2005-12-15 14:31:24 -08001207 return status;
1208
1209read_super_error:
Mark Fasheha81cb882008-10-07 14:25:16 -07001210 brelse(bh);
Mark Fashehccd979b2005-12-15 14:31:24 -08001211
Mark Fashehccd979b2005-12-15 14:31:24 -08001212 if (osb) {
1213 atomic_set(&osb->vol_state, VOLUME_DISABLED);
1214 wake_up(&osb->osb_mount_event);
1215 ocfs2_dismount_volume(sb, 1);
1216 }
1217
Tao Mac1e8d352011-03-07 16:43:21 +08001218 if (status)
1219 mlog_errno(status);
Mark Fashehccd979b2005-12-15 14:31:24 -08001220 return status;
1221}
1222
Al Viro152a0832010-07-25 00:46:55 +04001223static struct dentry *ocfs2_mount(struct file_system_type *fs_type,
David Howells454e2392006-06-23 02:02:57 -07001224 int flags,
1225 const char *dev_name,
Al Viro152a0832010-07-25 00:46:55 +04001226 void *data)
Mark Fashehccd979b2005-12-15 14:31:24 -08001227{
Al Viro152a0832010-07-25 00:46:55 +04001228 return mount_bdev(fs_type, flags, dev_name, data, ocfs2_fill_super);
Mark Fashehccd979b2005-12-15 14:31:24 -08001229}
1230
1231static struct file_system_type ocfs2_fs_type = {
1232 .owner = THIS_MODULE,
1233 .name = "ocfs2",
Al Viro152a0832010-07-25 00:46:55 +04001234 .mount = ocfs2_mount,
Goldwyn Rodrigues8ed6b232014-04-03 14:46:59 -07001235 .kill_sb = kill_block_super,
Mark Fasheh1ba9da22006-09-08 14:22:54 -07001236 .fs_flags = FS_REQUIRES_DEV|FS_RENAME_DOES_D_MOVE,
Mark Fashehccd979b2005-12-15 14:31:24 -08001237 .next = NULL
1238};
Eric W. Biederman91417702013-03-07 01:08:55 -08001239MODULE_ALIAS_FS("ocfs2");
Mark Fashehccd979b2005-12-15 14:31:24 -08001240
Jan Kara5297aad2009-10-15 14:54:04 +02001241static int ocfs2_check_set_options(struct super_block *sb,
1242 struct mount_options *options)
1243{
1244 if (options->mount_opt & OCFS2_MOUNT_USRQUOTA &&
1245 !OCFS2_HAS_RO_COMPAT_FEATURE(sb,
1246 OCFS2_FEATURE_RO_COMPAT_USRQUOTA)) {
1247 mlog(ML_ERROR, "User quotas were requested, but this "
1248 "filesystem does not have the feature enabled.\n");
1249 return 0;
1250 }
1251 if (options->mount_opt & OCFS2_MOUNT_GRPQUOTA &&
1252 !OCFS2_HAS_RO_COMPAT_FEATURE(sb,
1253 OCFS2_FEATURE_RO_COMPAT_GRPQUOTA)) {
1254 mlog(ML_ERROR, "Group quotas were requested, but this "
1255 "filesystem does not have the feature enabled.\n");
1256 return 0;
1257 }
1258 if (options->mount_opt & OCFS2_MOUNT_POSIX_ACL &&
1259 !OCFS2_HAS_INCOMPAT_FEATURE(sb, OCFS2_FEATURE_INCOMPAT_XATTR)) {
1260 mlog(ML_ERROR, "ACL support requested but extended attributes "
1261 "feature is not enabled\n");
1262 return 0;
1263 }
1264 /* No ACL setting specified? Use XATTR feature... */
1265 if (!(options->mount_opt & (OCFS2_MOUNT_POSIX_ACL |
1266 OCFS2_MOUNT_NO_POSIX_ACL))) {
1267 if (OCFS2_HAS_INCOMPAT_FEATURE(sb, OCFS2_FEATURE_INCOMPAT_XATTR))
1268 options->mount_opt |= OCFS2_MOUNT_POSIX_ACL;
1269 else
1270 options->mount_opt |= OCFS2_MOUNT_NO_POSIX_ACL;
1271 }
1272 return 1;
1273}
1274
Mark Fashehccd979b2005-12-15 14:31:24 -08001275static int ocfs2_parse_options(struct super_block *sb,
1276 char *options,
Tiger Yangc0123ad2007-09-08 00:16:10 +08001277 struct mount_options *mopt,
Mark Fashehccd979b2005-12-15 14:31:24 -08001278 int is_remount)
1279{
Mark Fasheh52c303c2011-01-31 11:31:04 -08001280 int status, user_stack = 0;
Mark Fashehccd979b2005-12-15 14:31:24 -08001281 char *p;
Sunil Mushran2c442712010-10-07 15:23:50 -07001282 u32 tmp;
Norton.Zhu3eb5bdf2016-01-14 15:17:09 -08001283 int token, option;
1284 substring_t args[MAX_OPT_ARGS];
Mark Fashehccd979b2005-12-15 14:31:24 -08001285
Tao Ma32a42d32011-02-23 21:29:08 +08001286 trace_ocfs2_parse_options(is_remount, options ? options : "(none)");
Mark Fashehccd979b2005-12-15 14:31:24 -08001287
Mark Fashehd147b3d2007-11-07 14:40:36 -08001288 mopt->commit_interval = 0;
Sunil Mushran4b37fcb2010-04-13 18:00:31 -07001289 mopt->mount_opt = OCFS2_MOUNT_NOINTR;
Tiger Yangc0123ad2007-09-08 00:16:10 +08001290 mopt->atime_quantum = OCFS2_DEFAULT_ATIME_QUANTUM;
1291 mopt->slot = OCFS2_INVALID_SLOT;
Mark Fasheh73c8a802010-04-05 18:17:13 -07001292 mopt->localalloc_opt = -1;
Joel Beckerb61817e2008-02-01 15:08:23 -08001293 mopt->cluster_stack[0] = '\0';
Mark Fashehd02f00c2009-12-07 13:10:48 -08001294 mopt->resv_level = OCFS2_DEFAULT_RESV_LEVEL;
Mark Fasheh83f92312010-04-05 18:17:16 -07001295 mopt->dir_resv_level = -1;
Mark Fashehccd979b2005-12-15 14:31:24 -08001296
1297 if (!options) {
1298 status = 1;
1299 goto bail;
1300 }
1301
1302 while ((p = strsep(&options, ",")) != NULL) {
Mark Fashehccd979b2005-12-15 14:31:24 -08001303 if (!*p)
1304 continue;
1305
1306 token = match_token(p, tokens, args);
1307 switch (token) {
1308 case Opt_hb_local:
Tiger Yangc0123ad2007-09-08 00:16:10 +08001309 mopt->mount_opt |= OCFS2_MOUNT_HB_LOCAL;
Mark Fashehccd979b2005-12-15 14:31:24 -08001310 break;
1311 case Opt_hb_none:
Sunil Mushran2c442712010-10-07 15:23:50 -07001312 mopt->mount_opt |= OCFS2_MOUNT_HB_NONE;
1313 break;
1314 case Opt_hb_global:
1315 mopt->mount_opt |= OCFS2_MOUNT_HB_GLOBAL;
Mark Fashehccd979b2005-12-15 14:31:24 -08001316 break;
1317 case Opt_barrier:
1318 if (match_int(&args[0], &option)) {
1319 status = 0;
1320 goto bail;
1321 }
1322 if (option)
Tiger Yangc0123ad2007-09-08 00:16:10 +08001323 mopt->mount_opt |= OCFS2_MOUNT_BARRIER;
Mark Fashehccd979b2005-12-15 14:31:24 -08001324 else
Tiger Yangc0123ad2007-09-08 00:16:10 +08001325 mopt->mount_opt &= ~OCFS2_MOUNT_BARRIER;
Mark Fashehccd979b2005-12-15 14:31:24 -08001326 break;
1327 case Opt_intr:
Tiger Yangc0123ad2007-09-08 00:16:10 +08001328 mopt->mount_opt &= ~OCFS2_MOUNT_NOINTR;
Mark Fashehccd979b2005-12-15 14:31:24 -08001329 break;
1330 case Opt_nointr:
Tiger Yangc0123ad2007-09-08 00:16:10 +08001331 mopt->mount_opt |= OCFS2_MOUNT_NOINTR;
Mark Fashehccd979b2005-12-15 14:31:24 -08001332 break;
1333 case Opt_err_panic:
Goldwyn Rodrigues7d0fb912015-09-04 15:44:11 -07001334 mopt->mount_opt &= ~OCFS2_MOUNT_ERRORS_CONT;
1335 mopt->mount_opt &= ~OCFS2_MOUNT_ERRORS_ROFS;
Tiger Yangc0123ad2007-09-08 00:16:10 +08001336 mopt->mount_opt |= OCFS2_MOUNT_ERRORS_PANIC;
Mark Fashehccd979b2005-12-15 14:31:24 -08001337 break;
1338 case Opt_err_ro:
Goldwyn Rodrigues7d0fb912015-09-04 15:44:11 -07001339 mopt->mount_opt &= ~OCFS2_MOUNT_ERRORS_CONT;
Tiger Yangc0123ad2007-09-08 00:16:10 +08001340 mopt->mount_opt &= ~OCFS2_MOUNT_ERRORS_PANIC;
Goldwyn Rodrigues7d0fb912015-09-04 15:44:11 -07001341 mopt->mount_opt |= OCFS2_MOUNT_ERRORS_ROFS;
1342 break;
1343 case Opt_err_cont:
1344 mopt->mount_opt &= ~OCFS2_MOUNT_ERRORS_ROFS;
1345 mopt->mount_opt &= ~OCFS2_MOUNT_ERRORS_PANIC;
1346 mopt->mount_opt |= OCFS2_MOUNT_ERRORS_CONT;
Mark Fashehccd979b2005-12-15 14:31:24 -08001347 break;
1348 case Opt_data_ordered:
Tiger Yangc0123ad2007-09-08 00:16:10 +08001349 mopt->mount_opt &= ~OCFS2_MOUNT_DATA_WRITEBACK;
Mark Fashehccd979b2005-12-15 14:31:24 -08001350 break;
1351 case Opt_data_writeback:
Tiger Yangc0123ad2007-09-08 00:16:10 +08001352 mopt->mount_opt |= OCFS2_MOUNT_DATA_WRITEBACK;
Mark Fashehccd979b2005-12-15 14:31:24 -08001353 break;
Tiger Yangcf1d6c72008-08-18 17:11:00 +08001354 case Opt_user_xattr:
1355 mopt->mount_opt &= ~OCFS2_MOUNT_NOUSERXATTR;
1356 break;
1357 case Opt_nouser_xattr:
1358 mopt->mount_opt |= OCFS2_MOUNT_NOUSERXATTR;
1359 break;
Tiger Yang7f1a37e2006-11-15 15:48:42 +08001360 case Opt_atime_quantum:
1361 if (match_int(&args[0], &option)) {
1362 status = 0;
1363 goto bail;
1364 }
1365 if (option >= 0)
Tiger Yangc0123ad2007-09-08 00:16:10 +08001366 mopt->atime_quantum = option;
Tiger Yang7f1a37e2006-11-15 15:48:42 +08001367 break;
Sunil Mushranbaf46612007-06-18 17:00:24 -07001368 case Opt_slot:
Sunil Mushranbaf46612007-06-18 17:00:24 -07001369 if (match_int(&args[0], &option)) {
1370 status = 0;
1371 goto bail;
1372 }
1373 if (option)
Junxiao Bi2905e9b2020-08-06 23:18:02 -07001374 mopt->slot = (u16)option;
Sunil Mushranbaf46612007-06-18 17:00:24 -07001375 break;
Mark Fashehd147b3d2007-11-07 14:40:36 -08001376 case Opt_commit:
Mark Fashehd147b3d2007-11-07 14:40:36 -08001377 if (match_int(&args[0], &option)) {
1378 status = 0;
1379 goto bail;
1380 }
1381 if (option < 0)
1382 return 0;
1383 if (option == 0)
Joel Becker2b4e30f2008-09-03 20:03:41 -07001384 option = JBD2_DEFAULT_MAX_COMMIT_AGE;
Mark Fashehd147b3d2007-11-07 14:40:36 -08001385 mopt->commit_interval = HZ * option;
1386 break;
Sunil Mushran2fbe8d12007-12-20 14:58:11 -08001387 case Opt_localalloc:
Sunil Mushran2fbe8d12007-12-20 14:58:11 -08001388 if (match_int(&args[0], &option)) {
1389 status = 0;
1390 goto bail;
1391 }
Mark Fasheh73c8a802010-04-05 18:17:13 -07001392 if (option >= 0)
Sunil Mushran2fbe8d12007-12-20 14:58:11 -08001393 mopt->localalloc_opt = option;
1394 break;
Mark Fasheh53fc6222007-12-20 16:49:04 -08001395 case Opt_localflocks:
1396 /*
1397 * Changing this during remount could race
1398 * flock() requests, or "unbalance" existing
1399 * ones (e.g., a lock is taken in one mode but
1400 * dropped in the other). If users care enough
1401 * to flip locking modes during remount, we
1402 * could add a "local" flag to individual
1403 * flock structures for proper tracking of
1404 * state.
1405 */
1406 if (!is_remount)
1407 mopt->mount_opt |= OCFS2_MOUNT_LOCALFLOCKS;
1408 break;
Joel Beckerb61817e2008-02-01 15:08:23 -08001409 case Opt_stack:
1410 /* Check both that the option we were passed
1411 * is of the right length and that it is a proper
1412 * string of the right length.
1413 */
1414 if (((args[0].to - args[0].from) !=
1415 OCFS2_STACK_LABEL_LEN) ||
1416 (strnlen(args[0].from,
1417 OCFS2_STACK_LABEL_LEN) !=
1418 OCFS2_STACK_LABEL_LEN)) {
1419 mlog(ML_ERROR,
1420 "Invalid cluster_stack option\n");
1421 status = 0;
1422 goto bail;
1423 }
1424 memcpy(mopt->cluster_stack, args[0].from,
1425 OCFS2_STACK_LABEL_LEN);
1426 mopt->cluster_stack[OCFS2_STACK_LABEL_LEN] = '\0';
Mark Fasheh52c303c2011-01-31 11:31:04 -08001427 /*
1428 * Open code the memcmp here as we don't have
1429 * an osb to pass to
1430 * ocfs2_userspace_stack().
1431 */
1432 if (memcmp(mopt->cluster_stack,
1433 OCFS2_CLASSIC_CLUSTER_STACK,
1434 OCFS2_STACK_LABEL_LEN))
1435 user_stack = 1;
Joel Beckerb61817e2008-02-01 15:08:23 -08001436 break;
Joel Becker12462f12008-09-03 20:03:40 -07001437 case Opt_inode64:
1438 mopt->mount_opt |= OCFS2_MOUNT_INODE64;
1439 break;
Jan Kara19ece542008-08-21 20:13:17 +02001440 case Opt_usrquota:
Jan Kara19ece542008-08-21 20:13:17 +02001441 mopt->mount_opt |= OCFS2_MOUNT_USRQUOTA;
1442 break;
1443 case Opt_grpquota:
Jan Kara19ece542008-08-21 20:13:17 +02001444 mopt->mount_opt |= OCFS2_MOUNT_GRPQUOTA;
1445 break;
Tristan Ye7bdb0d12010-10-11 16:46:39 +08001446 case Opt_coherency_buffered:
1447 mopt->mount_opt |= OCFS2_MOUNT_COHERENCY_BUFFERED;
1448 break;
1449 case Opt_coherency_full:
1450 mopt->mount_opt &= ~OCFS2_MOUNT_COHERENCY_BUFFERED;
1451 break;
Tiger Yanga68979b2008-11-14 11:17:52 +08001452 case Opt_acl:
1453 mopt->mount_opt |= OCFS2_MOUNT_POSIX_ACL;
Jan Kara5297aad2009-10-15 14:54:04 +02001454 mopt->mount_opt &= ~OCFS2_MOUNT_NO_POSIX_ACL;
Tiger Yanga68979b2008-11-14 11:17:52 +08001455 break;
1456 case Opt_noacl:
Jan Kara5297aad2009-10-15 14:54:04 +02001457 mopt->mount_opt |= OCFS2_MOUNT_NO_POSIX_ACL;
Tiger Yanga68979b2008-11-14 11:17:52 +08001458 mopt->mount_opt &= ~OCFS2_MOUNT_POSIX_ACL;
1459 break;
Mark Fashehd02f00c2009-12-07 13:10:48 -08001460 case Opt_resv_level:
1461 if (is_remount)
1462 break;
1463 if (match_int(&args[0], &option)) {
1464 status = 0;
1465 goto bail;
1466 }
1467 if (option >= OCFS2_MIN_RESV_LEVEL &&
1468 option < OCFS2_MAX_RESV_LEVEL)
1469 mopt->resv_level = option;
1470 break;
Mark Fasheh83f92312010-04-05 18:17:16 -07001471 case Opt_dir_resv_level:
1472 if (is_remount)
1473 break;
1474 if (match_int(&args[0], &option)) {
1475 status = 0;
1476 goto bail;
1477 }
1478 if (option >= OCFS2_MIN_RESV_LEVEL &&
1479 option < OCFS2_MAX_RESV_LEVEL)
1480 mopt->dir_resv_level = option;
1481 break;
alex chen1dfeb762015-02-10 14:09:04 -08001482 case Opt_journal_async_commit:
1483 mopt->mount_opt |= OCFS2_MOUNT_JOURNAL_ASYNC_COMMIT;
1484 break;
Mark Fashehccd979b2005-12-15 14:31:24 -08001485 default:
1486 mlog(ML_ERROR,
1487 "Unrecognized mount option \"%s\" "
1488 "or missing value\n", p);
1489 status = 0;
1490 goto bail;
1491 }
1492 }
1493
Mark Fasheh52c303c2011-01-31 11:31:04 -08001494 if (user_stack == 0) {
1495 /* Ensure only one heartbeat mode */
1496 tmp = mopt->mount_opt & (OCFS2_MOUNT_HB_LOCAL |
1497 OCFS2_MOUNT_HB_GLOBAL |
1498 OCFS2_MOUNT_HB_NONE);
1499 if (hweight32(tmp) != 1) {
1500 mlog(ML_ERROR, "Invalid heartbeat mount options\n");
1501 status = 0;
1502 goto bail;
1503 }
Sunil Mushran2c442712010-10-07 15:23:50 -07001504 }
1505
Mark Fashehccd979b2005-12-15 14:31:24 -08001506 status = 1;
1507
1508bail:
Mark Fashehccd979b2005-12-15 14:31:24 -08001509 return status;
1510}
1511
Al Viro34c80b12011-12-08 21:32:45 -05001512static int ocfs2_show_options(struct seq_file *s, struct dentry *root)
Sunil Mushrand5500712007-09-06 13:34:16 -07001513{
Al Viro34c80b12011-12-08 21:32:45 -05001514 struct ocfs2_super *osb = OCFS2_SB(root->d_sb);
Sunil Mushrand5500712007-09-06 13:34:16 -07001515 unsigned long opts = osb->s_mount_opt;
Mark Fashehebcee4b2008-07-28 14:55:20 -07001516 unsigned int local_alloc_megs;
Sunil Mushrand5500712007-09-06 13:34:16 -07001517
Sunil Mushran2c442712010-10-07 15:23:50 -07001518 if (opts & (OCFS2_MOUNT_HB_LOCAL | OCFS2_MOUNT_HB_GLOBAL)) {
1519 seq_printf(s, ",_netdev");
1520 if (opts & OCFS2_MOUNT_HB_LOCAL)
1521 seq_printf(s, ",%s", OCFS2_HB_LOCAL);
1522 else
1523 seq_printf(s, ",%s", OCFS2_HB_GLOBAL);
1524 } else
1525 seq_printf(s, ",%s", OCFS2_HB_NONE);
Sunil Mushrand5500712007-09-06 13:34:16 -07001526
1527 if (opts & OCFS2_MOUNT_NOINTR)
1528 seq_printf(s, ",nointr");
1529
1530 if (opts & OCFS2_MOUNT_DATA_WRITEBACK)
1531 seq_printf(s, ",data=writeback");
1532 else
1533 seq_printf(s, ",data=ordered");
1534
1535 if (opts & OCFS2_MOUNT_BARRIER)
1536 seq_printf(s, ",barrier=1");
1537
1538 if (opts & OCFS2_MOUNT_ERRORS_PANIC)
1539 seq_printf(s, ",errors=panic");
Goldwyn Rodrigues7d0fb912015-09-04 15:44:11 -07001540 else if (opts & OCFS2_MOUNT_ERRORS_CONT)
1541 seq_printf(s, ",errors=continue");
Sunil Mushrand5500712007-09-06 13:34:16 -07001542 else
1543 seq_printf(s, ",errors=remount-ro");
1544
1545 if (osb->preferred_slot != OCFS2_INVALID_SLOT)
1546 seq_printf(s, ",preferred_slot=%d", osb->preferred_slot);
1547
Al Viro34c80b12011-12-08 21:32:45 -05001548 seq_printf(s, ",atime_quantum=%u", osb->s_atime_quantum);
Sunil Mushrand5500712007-09-06 13:34:16 -07001549
Mark Fashehd147b3d2007-11-07 14:40:36 -08001550 if (osb->osb_commit_interval)
1551 seq_printf(s, ",commit=%u",
1552 (unsigned) (osb->osb_commit_interval / HZ));
1553
Mark Fashehebcee4b2008-07-28 14:55:20 -07001554 local_alloc_megs = osb->local_alloc_bits >> (20 - osb->s_clustersize_bits);
Mark Fasheh6b820212010-04-05 18:17:14 -07001555 if (local_alloc_megs != ocfs2_la_default_mb(osb))
Mark Fashehebcee4b2008-07-28 14:55:20 -07001556 seq_printf(s, ",localalloc=%d", local_alloc_megs);
Sunil Mushran2fbe8d12007-12-20 14:58:11 -08001557
Mark Fasheh53fc6222007-12-20 16:49:04 -08001558 if (opts & OCFS2_MOUNT_LOCALFLOCKS)
1559 seq_printf(s, ",localflocks,");
1560
Joel Beckerb61817e2008-02-01 15:08:23 -08001561 if (osb->osb_cluster_stack[0])
Kees Cooka068acf2015-09-04 15:44:57 -07001562 seq_show_option_n(s, "cluster_stack", osb->osb_cluster_stack,
1563 OCFS2_STACK_LABEL_LEN);
Jan Kara19ece542008-08-21 20:13:17 +02001564 if (opts & OCFS2_MOUNT_USRQUOTA)
1565 seq_printf(s, ",usrquota");
1566 if (opts & OCFS2_MOUNT_GRPQUOTA)
1567 seq_printf(s, ",grpquota");
Joel Beckerb61817e2008-02-01 15:08:23 -08001568
Tristan Ye7bdb0d12010-10-11 16:46:39 +08001569 if (opts & OCFS2_MOUNT_COHERENCY_BUFFERED)
1570 seq_printf(s, ",coherency=buffered");
1571 else
1572 seq_printf(s, ",coherency=full");
1573
Sunil Mushranb0f73cf2008-09-05 11:29:14 -07001574 if (opts & OCFS2_MOUNT_NOUSERXATTR)
1575 seq_printf(s, ",nouser_xattr");
1576 else
1577 seq_printf(s, ",user_xattr");
1578
Joel Becker12462f12008-09-03 20:03:40 -07001579 if (opts & OCFS2_MOUNT_INODE64)
1580 seq_printf(s, ",inode64");
1581
Tiger Yanga68979b2008-11-14 11:17:52 +08001582 if (opts & OCFS2_MOUNT_POSIX_ACL)
1583 seq_printf(s, ",acl");
1584 else
1585 seq_printf(s, ",noacl");
Tiger Yanga68979b2008-11-14 11:17:52 +08001586
Mark Fashehd02f00c2009-12-07 13:10:48 -08001587 if (osb->osb_resv_level != OCFS2_DEFAULT_RESV_LEVEL)
1588 seq_printf(s, ",resv_level=%d", osb->osb_resv_level);
1589
Mark Fasheh83f92312010-04-05 18:17:16 -07001590 if (osb->osb_dir_resv_level != osb->osb_resv_level)
1591 seq_printf(s, ",dir_resv_level=%d", osb->osb_resv_level);
1592
alex chen1dfeb762015-02-10 14:09:04 -08001593 if (opts & OCFS2_MOUNT_JOURNAL_ASYNC_COMMIT)
1594 seq_printf(s, ",journal_async_commit");
1595
Sunil Mushrand5500712007-09-06 13:34:16 -07001596 return 0;
1597}
1598
Mark Fashehccd979b2005-12-15 14:31:24 -08001599static int __init ocfs2_init(void)
1600{
Wengang Wangc18ceab2014-04-03 14:46:46 -07001601 int status;
Mark Fasheha11f7e62011-06-22 14:23:38 -07001602
Mark Fashehccd979b2005-12-15 14:31:24 -08001603 status = init_ocfs2_uptodate_cache();
Al Viro342827d2012-03-17 22:03:58 -04001604 if (status < 0)
1605 goto out1;
Mark Fashehccd979b2005-12-15 14:31:24 -08001606
1607 status = ocfs2_initialize_mem_caches();
Al Viro342827d2012-03-17 22:03:58 -04001608 if (status < 0)
1609 goto out2;
Mark Fashehccd979b2005-12-15 14:31:24 -08001610
Mark Fashehccd979b2005-12-15 14:31:24 -08001611 ocfs2_debugfs_root = debugfs_create_dir("ocfs2", NULL);
Linus Torvalds8f443e22015-04-21 09:17:28 -07001612 if (!ocfs2_debugfs_root) {
1613 status = -ENOMEM;
Mark Fashehccd979b2005-12-15 14:31:24 -08001614 mlog(ML_ERROR, "Unable to create ocfs2 debugfs root.\n");
jiangyiwen35ddf782016-03-25 14:21:32 -07001615 goto out3;
Mark Fashehccd979b2005-12-15 14:31:24 -08001616 }
1617
Joel Becker63e0c482008-01-30 16:58:36 -08001618 ocfs2_set_locking_protocol();
1619
Jan Kara9e33d692008-08-25 19:56:50 +02001620 status = register_quota_format(&ocfs2_quota_format);
Al Viro342827d2012-03-17 22:03:58 -04001621 if (status < 0)
jiangyiwen35ddf782016-03-25 14:21:32 -07001622 goto out3;
Al Viro342827d2012-03-17 22:03:58 -04001623 status = register_filesystem(&ocfs2_fs_type);
1624 if (!status)
1625 return 0;
Mark Fashehccd979b2005-12-15 14:31:24 -08001626
Al Viro342827d2012-03-17 22:03:58 -04001627 unregister_quota_format(&ocfs2_quota_format);
Al Viro342827d2012-03-17 22:03:58 -04001628out3:
jiangyiwen35ddf782016-03-25 14:21:32 -07001629 debugfs_remove(ocfs2_debugfs_root);
Al Viro342827d2012-03-17 22:03:58 -04001630 ocfs2_free_mem_caches();
1631out2:
1632 exit_ocfs2_uptodate_cache();
1633out1:
1634 mlog_errno(status);
1635 return status;
Mark Fashehccd979b2005-12-15 14:31:24 -08001636}
1637
1638static void __exit ocfs2_exit(void)
1639{
Jan Kara9e33d692008-08-25 19:56:50 +02001640 unregister_quota_format(&ocfs2_quota_format);
1641
Mark Fashehccd979b2005-12-15 14:31:24 -08001642 debugfs_remove(ocfs2_debugfs_root);
1643
1644 ocfs2_free_mem_caches();
1645
1646 unregister_filesystem(&ocfs2_fs_type);
1647
Mark Fashehccd979b2005-12-15 14:31:24 -08001648 exit_ocfs2_uptodate_cache();
Mark Fashehccd979b2005-12-15 14:31:24 -08001649}
1650
1651static void ocfs2_put_super(struct super_block *sb)
1652{
Tao Ma32a42d32011-02-23 21:29:08 +08001653 trace_ocfs2_put_super(sb);
Mark Fashehccd979b2005-12-15 14:31:24 -08001654
1655 ocfs2_sync_blockdev(sb);
1656 ocfs2_dismount_volume(sb, 0);
Gang Hea849d462016-03-22 14:24:27 -07001657 ocfs2_filecheck_remove_sysfs(sb);
Mark Fashehccd979b2005-12-15 14:31:24 -08001658}
1659
David Howells726c3342006-06-23 02:02:58 -07001660static int ocfs2_statfs(struct dentry *dentry, struct kstatfs *buf)
Mark Fashehccd979b2005-12-15 14:31:24 -08001661{
1662 struct ocfs2_super *osb;
1663 u32 numbits, freebits;
1664 int status;
1665 struct ocfs2_dinode *bm_lock;
1666 struct buffer_head *bh = NULL;
1667 struct inode *inode = NULL;
1668
Tao Ma32a42d32011-02-23 21:29:08 +08001669 trace_ocfs2_statfs(dentry->d_sb, buf);
Mark Fashehccd979b2005-12-15 14:31:24 -08001670
David Howells726c3342006-06-23 02:02:58 -07001671 osb = OCFS2_SB(dentry->d_sb);
Mark Fashehccd979b2005-12-15 14:31:24 -08001672
1673 inode = ocfs2_get_system_file_inode(osb,
1674 GLOBAL_BITMAP_SYSTEM_INODE,
1675 OCFS2_INVALID_SLOT);
1676 if (!inode) {
1677 mlog(ML_ERROR, "failed to get bitmap inode\n");
1678 status = -EIO;
1679 goto bail;
1680 }
1681
Mark Fashehe63aecb62007-10-18 15:30:42 -07001682 status = ocfs2_inode_lock(inode, &bh, 0);
Mark Fashehccd979b2005-12-15 14:31:24 -08001683 if (status < 0) {
1684 mlog_errno(status);
1685 goto bail;
1686 }
1687
1688 bm_lock = (struct ocfs2_dinode *) bh->b_data;
1689
1690 numbits = le32_to_cpu(bm_lock->id1.bitmap1.i_total);
1691 freebits = numbits - le32_to_cpu(bm_lock->id1.bitmap1.i_used);
1692
1693 buf->f_type = OCFS2_SUPER_MAGIC;
David Howells726c3342006-06-23 02:02:58 -07001694 buf->f_bsize = dentry->d_sb->s_blocksize;
Mark Fashehccd979b2005-12-15 14:31:24 -08001695 buf->f_namelen = OCFS2_MAX_FILENAME_LEN;
1696 buf->f_blocks = ((sector_t) numbits) *
1697 (osb->s_clustersize >> osb->sb->s_blocksize_bits);
1698 buf->f_bfree = ((sector_t) freebits) *
1699 (osb->s_clustersize >> osb->sb->s_blocksize_bits);
1700 buf->f_bavail = buf->f_bfree;
1701 buf->f_files = numbits;
1702 buf->f_ffree = freebits;
Coly Li837711f2009-01-16 16:33:05 +08001703 buf->f_fsid.val[0] = crc32_le(0, osb->uuid_str, OCFS2_VOL_UUID_LEN)
1704 & 0xFFFFFFFFUL;
1705 buf->f_fsid.val[1] = crc32_le(0, osb->uuid_str + OCFS2_VOL_UUID_LEN,
1706 OCFS2_VOL_UUID_LEN) & 0xFFFFFFFFUL;
Mark Fashehccd979b2005-12-15 14:31:24 -08001707
1708 brelse(bh);
1709
Mark Fashehe63aecb62007-10-18 15:30:42 -07001710 ocfs2_inode_unlock(inode, 0);
Mark Fashehccd979b2005-12-15 14:31:24 -08001711 status = 0;
1712bail:
Joseph Qi72865d92016-01-14 15:17:27 -08001713 iput(inode);
Mark Fashehccd979b2005-12-15 14:31:24 -08001714
Tao Mac1e8d352011-03-07 16:43:21 +08001715 if (status)
1716 mlog_errno(status);
Mark Fashehccd979b2005-12-15 14:31:24 -08001717
1718 return status;
1719}
1720
Alexey Dobriyan51cc5062008-07-25 19:45:34 -07001721static void ocfs2_inode_init_once(void *data)
Mark Fashehccd979b2005-12-15 14:31:24 -08001722{
1723 struct ocfs2_inode_info *oi = data;
1724
Christoph Lametera35afb82007-05-16 22:10:57 -07001725 oi->ip_flags = 0;
1726 oi->ip_open_count = 0;
1727 spin_lock_init(&oi->ip_lock);
1728 ocfs2_extent_map_init(&oi->vfs_inode);
1729 INIT_LIST_HEAD(&oi->ip_io_markers);
Ryan Ding4506cfb2016-03-25 14:21:06 -07001730 INIT_LIST_HEAD(&oi->ip_unwritten_list);
Christoph Lametera35afb82007-05-16 22:10:57 -07001731 oi->ip_dir_start_lookup = 0;
Christoph Lametera35afb82007-05-16 22:10:57 -07001732 init_rwsem(&oi->ip_alloc_sem);
Tiger Yangcf1d6c72008-08-18 17:11:00 +08001733 init_rwsem(&oi->ip_xattr_sem);
Christoph Lametera35afb82007-05-16 22:10:57 -07001734 mutex_init(&oi->ip_io_mutex);
Mark Fashehccd979b2005-12-15 14:31:24 -08001735
Christoph Lametera35afb82007-05-16 22:10:57 -07001736 oi->ip_blkno = 0ULL;
1737 oi->ip_clusters = 0;
Wengang Wangc3ea2652020-11-13 22:52:23 -08001738 oi->ip_next_orphan = NULL;
Mark Fashehccd979b2005-12-15 14:31:24 -08001739
Mark Fasheh4fe370a2009-12-07 13:15:40 -08001740 ocfs2_resv_init_once(&oi->ip_la_data_resv);
1741
Christoph Lametera35afb82007-05-16 22:10:57 -07001742 ocfs2_lock_res_init_once(&oi->ip_rw_lockres);
Mark Fashehe63aecb62007-10-18 15:30:42 -07001743 ocfs2_lock_res_init_once(&oi->ip_inode_lockres);
Christoph Lametera35afb82007-05-16 22:10:57 -07001744 ocfs2_lock_res_init_once(&oi->ip_open_lockres);
Mark Fashehccd979b2005-12-15 14:31:24 -08001745
Joel Becker8cb471e2009-02-10 20:00:41 -08001746 ocfs2_metadata_cache_init(INODE_CACHE(&oi->vfs_inode),
Joel Becker6e5a3d72009-02-10 19:00:37 -08001747 &ocfs2_inode_caching_ops);
Mark Fashehccd979b2005-12-15 14:31:24 -08001748
Christoph Lametera35afb82007-05-16 22:10:57 -07001749 inode_init_once(&oi->vfs_inode);
Mark Fashehccd979b2005-12-15 14:31:24 -08001750}
1751
1752static int ocfs2_initialize_mem_caches(void)
1753{
1754 ocfs2_inode_cachep = kmem_cache_create("ocfs2_inode_cache",
Paul Jacksonfffb60f2006-03-24 03:16:06 -08001755 sizeof(struct ocfs2_inode_info),
1756 0,
1757 (SLAB_HWCACHE_ALIGN|SLAB_RECLAIM_ACCOUNT|
Vladimir Davydov5d097052016-01-14 15:18:21 -08001758 SLAB_MEM_SPREAD|SLAB_ACCOUNT),
Paul Mundt20c2df82007-07-20 10:11:58 +09001759 ocfs2_inode_init_once);
Jan Kara9e33d692008-08-25 19:56:50 +02001760 ocfs2_dquot_cachep = kmem_cache_create("ocfs2_dquot_cache",
1761 sizeof(struct ocfs2_dquot),
1762 0,
1763 (SLAB_HWCACHE_ALIGN|SLAB_RECLAIM_ACCOUNT|
1764 SLAB_MEM_SPREAD),
1765 NULL);
1766 ocfs2_qf_chunk_cachep = kmem_cache_create("ocfs2_qf_chunk_cache",
1767 sizeof(struct ocfs2_quota_chunk),
1768 0,
1769 (SLAB_RECLAIM_ACCOUNT|SLAB_MEM_SPREAD),
1770 NULL);
1771 if (!ocfs2_inode_cachep || !ocfs2_dquot_cachep ||
1772 !ocfs2_qf_chunk_cachep) {
1773 if (ocfs2_inode_cachep)
1774 kmem_cache_destroy(ocfs2_inode_cachep);
1775 if (ocfs2_dquot_cachep)
1776 kmem_cache_destroy(ocfs2_dquot_cachep);
1777 if (ocfs2_qf_chunk_cachep)
1778 kmem_cache_destroy(ocfs2_qf_chunk_cachep);
Mark Fashehccd979b2005-12-15 14:31:24 -08001779 return -ENOMEM;
Jan Kara9e33d692008-08-25 19:56:50 +02001780 }
Mark Fashehccd979b2005-12-15 14:31:24 -08001781
Mark Fashehccd979b2005-12-15 14:31:24 -08001782 return 0;
1783}
1784
1785static void ocfs2_free_mem_caches(void)
1786{
Kirill A. Shutemov8c0a8532012-09-26 11:33:07 +10001787 /*
1788 * Make sure all delayed rcu free inodes are flushed before we
1789 * destroy cache.
1790 */
1791 rcu_barrier();
Mark Fashehccd979b2005-12-15 14:31:24 -08001792 if (ocfs2_inode_cachep)
1793 kmem_cache_destroy(ocfs2_inode_cachep);
Mark Fashehccd979b2005-12-15 14:31:24 -08001794 ocfs2_inode_cachep = NULL;
Jan Kara9e33d692008-08-25 19:56:50 +02001795
1796 if (ocfs2_dquot_cachep)
1797 kmem_cache_destroy(ocfs2_dquot_cachep);
1798 ocfs2_dquot_cachep = NULL;
1799
1800 if (ocfs2_qf_chunk_cachep)
1801 kmem_cache_destroy(ocfs2_qf_chunk_cachep);
1802 ocfs2_qf_chunk_cachep = NULL;
Mark Fashehccd979b2005-12-15 14:31:24 -08001803}
1804
1805static int ocfs2_get_sector(struct super_block *sb,
1806 struct buffer_head **bh,
1807 int block,
1808 int sect_size)
1809{
1810 if (!sb_set_blocksize(sb, sect_size)) {
1811 mlog(ML_ERROR, "unable to set blocksize\n");
1812 return -EIO;
1813 }
1814
1815 *bh = sb_getblk(sb, block);
1816 if (!*bh) {
Rui Xiang7391a292013-11-12 15:06:54 -08001817 mlog_errno(-ENOMEM);
1818 return -ENOMEM;
Mark Fashehccd979b2005-12-15 14:31:24 -08001819 }
1820 lock_buffer(*bh);
1821 if (!buffer_dirty(*bh))
1822 clear_buffer_uptodate(*bh);
1823 unlock_buffer(*bh);
Mike Christiedfec8a12016-06-05 14:31:44 -05001824 ll_rw_block(REQ_OP_READ, 0, 1, bh);
Mark Fashehccd979b2005-12-15 14:31:24 -08001825 wait_on_buffer(*bh);
wengang wang28d57d42009-02-13 10:11:47 +08001826 if (!buffer_uptodate(*bh)) {
1827 mlog_errno(-EIO);
1828 brelse(*bh);
1829 *bh = NULL;
1830 return -EIO;
1831 }
1832
Mark Fashehccd979b2005-12-15 14:31:24 -08001833 return 0;
1834}
1835
Mark Fashehccd979b2005-12-15 14:31:24 -08001836static int ocfs2_mount_volume(struct super_block *sb)
1837{
1838 int status = 0;
1839 int unlock_super = 0;
1840 struct ocfs2_super *osb = OCFS2_SB(sb);
1841
Mark Fashehccd979b2005-12-15 14:31:24 -08001842 if (ocfs2_is_hard_readonly(osb))
1843 goto leave;
1844
Mark Fashehccd979b2005-12-15 14:31:24 -08001845 status = ocfs2_dlm_init(osb);
1846 if (status < 0) {
1847 mlog_errno(status);
1848 goto leave;
1849 }
1850
Mark Fashehccd979b2005-12-15 14:31:24 -08001851 status = ocfs2_super_lock(osb, 1);
1852 if (status < 0) {
1853 mlog_errno(status);
1854 goto leave;
1855 }
1856 unlock_super = 1;
1857
1858 /* This will load up the node map and add ourselves to it. */
1859 status = ocfs2_find_slot(osb);
1860 if (status < 0) {
1861 mlog_errno(status);
1862 goto leave;
1863 }
1864
Mark Fashehccd979b2005-12-15 14:31:24 -08001865 /* load all node-local system inodes */
1866 status = ocfs2_init_local_system_inodes(osb);
1867 if (status < 0) {
1868 mlog_errno(status);
1869 goto leave;
1870 }
1871
1872 status = ocfs2_check_volume(osb);
1873 if (status < 0) {
1874 mlog_errno(status);
1875 goto leave;
1876 }
1877
1878 status = ocfs2_truncate_log_init(osb);
Tao Ma06c59bb2009-05-19 06:47:20 +08001879 if (status < 0)
Mark Fashehccd979b2005-12-15 14:31:24 -08001880 mlog_errno(status);
Sunil Mushranc271c5c2006-12-05 17:56:35 -08001881
Mark Fashehccd979b2005-12-15 14:31:24 -08001882leave:
1883 if (unlock_super)
1884 ocfs2_super_unlock(osb, 1);
1885
Mark Fashehccd979b2005-12-15 14:31:24 -08001886 return status;
1887}
1888
Mark Fashehccd979b2005-12-15 14:31:24 -08001889static void ocfs2_dismount_volume(struct super_block *sb, int mnt_err)
1890{
Joel Becker286eaa92008-02-01 15:03:57 -08001891 int tmp, hangup_needed = 0;
Mark Fashehccd979b2005-12-15 14:31:24 -08001892 struct ocfs2_super *osb = NULL;
Goldwyn Rodrigues99d7a882013-09-24 15:27:32 -07001893 char nodestr[12];
Mark Fashehccd979b2005-12-15 14:31:24 -08001894
Tao Ma32a42d32011-02-23 21:29:08 +08001895 trace_ocfs2_dismount_volume(sb);
Mark Fashehccd979b2005-12-15 14:31:24 -08001896
1897 BUG_ON(!sb);
1898 osb = OCFS2_SB(sb);
1899 BUG_ON(!osb);
1900
Sunil Mushran50397502008-12-17 14:17:43 -08001901 debugfs_remove(osb->osb_ctxt);
1902
Sunil Mushran692684e2009-06-19 16:53:17 -07001903 /* Orphan scan should be stopped as early as possible */
1904 ocfs2_orphan_scan_stop(osb);
1905
Jan Kara19ece542008-08-21 20:13:17 +02001906 ocfs2_disable_quotas(osb);
1907
Jan Karae3a767b2014-04-03 14:46:56 -07001908 /* All dquots should be freed by now */
1909 WARN_ON(!llist_empty(&osb->dquot_drop_list));
1910 /* Wait for worker to be done with the work structure in osb */
1911 cancel_work_sync(&osb->dquot_drop_work);
1912
Mark Fashehccd979b2005-12-15 14:31:24 -08001913 ocfs2_shutdown_local_alloc(osb);
1914
Xue jiufeib253bfd2014-06-23 13:22:08 -07001915 ocfs2_truncate_log_shutdown(osb);
1916
Joel Becker553abd02008-02-01 12:03:57 -08001917 /* This will disable recovery and flush any recovery work. */
1918 ocfs2_recovery_exit(osb);
Mark Fashehccd979b2005-12-15 14:31:24 -08001919
1920 ocfs2_journal_shutdown(osb);
1921
1922 ocfs2_sync_blockdev(sb);
1923
Tao Ma374a2632009-08-24 11:13:37 +08001924 ocfs2_purge_refcount_trees(osb);
1925
Joel Becker4670c462008-02-01 14:39:35 -08001926 /* No cluster connection means we've failed during mount, so skip
1927 * all the steps which depended on that to complete. */
1928 if (osb->cconn) {
Mark Fashehccd979b2005-12-15 14:31:24 -08001929 tmp = ocfs2_super_lock(osb, 1);
1930 if (tmp < 0) {
1931 mlog_errno(tmp);
1932 return;
1933 }
Mark Fashehccd979b2005-12-15 14:31:24 -08001934 }
1935
Mark Fasheh19b613d2007-10-04 14:47:09 -07001936 if (osb->slot_num != OCFS2_INVALID_SLOT)
1937 ocfs2_put_slot(osb);
1938
Joel Becker4670c462008-02-01 14:39:35 -08001939 if (osb->cconn)
Mark Fasheh19b613d2007-10-04 14:47:09 -07001940 ocfs2_super_unlock(osb, 1);
1941
Mark Fashehccd979b2005-12-15 14:31:24 -08001942 ocfs2_release_system_inodes(osb);
1943
Joel Becker6953b4c2008-01-29 16:59:56 -08001944 /*
Joel Becker6953b4c2008-01-29 16:59:56 -08001945 * If we're dismounting due to mount error, mount.ocfs2 will clean
1946 * up heartbeat. If we're a local mount, there is no heartbeat.
1947 * If we failed before we got a uuid_str yet, we can't stop
1948 * heartbeat. Otherwise, do it.
1949 */
Tiger Yang03efed82011-05-28 00:34:19 +08001950 if (!mnt_err && !ocfs2_mount_local(osb) && osb->uuid_str &&
1951 !ocfs2_is_hard_readonly(osb))
Joel Becker286eaa92008-02-01 15:03:57 -08001952 hangup_needed = 1;
1953
1954 if (osb->cconn)
1955 ocfs2_dlm_shutdown(osb, hangup_needed);
1956
Joel Becker73be1922009-01-06 14:57:08 -08001957 ocfs2_blockcheck_stats_debugfs_remove(&osb->osb_ecc_stats);
Joel Becker286eaa92008-02-01 15:03:57 -08001958 debugfs_remove(osb->osb_debug_root);
1959
1960 if (hangup_needed)
Joel Becker6953b4c2008-01-29 16:59:56 -08001961 ocfs2_cluster_hangup(osb->uuid_str, strlen(osb->uuid_str));
Mark Fashehccd979b2005-12-15 14:31:24 -08001962
1963 atomic_set(&osb->vol_state, VOLUME_DISMOUNTED);
1964
Sunil Mushranc271c5c2006-12-05 17:56:35 -08001965 if (ocfs2_mount_local(osb))
1966 snprintf(nodestr, sizeof(nodestr), "local");
1967 else
Joel Becker19fdb622008-01-30 15:38:24 -08001968 snprintf(nodestr, sizeof(nodestr), "%u", osb->node_num);
Sunil Mushranc271c5c2006-12-05 17:56:35 -08001969
1970 printk(KERN_INFO "ocfs2: Unmounting device (%s) on (node %s)\n",
1971 osb->dev_str, nodestr);
Mark Fashehccd979b2005-12-15 14:31:24 -08001972
1973 ocfs2_delete_osb(osb);
1974 kfree(osb);
1975 sb->s_dev = 0;
1976 sb->s_fs_info = NULL;
1977}
1978
1979static int ocfs2_setup_osb_uuid(struct ocfs2_super *osb, const unsigned char *uuid,
1980 unsigned uuid_bytes)
1981{
1982 int i, ret;
1983 char *ptr;
1984
1985 BUG_ON(uuid_bytes != OCFS2_VOL_UUID_LEN);
1986
Robert P. J. Daycd861282006-12-13 00:34:52 -08001987 osb->uuid_str = kzalloc(OCFS2_VOL_UUID_LEN * 2 + 1, GFP_KERNEL);
Mark Fashehccd979b2005-12-15 14:31:24 -08001988 if (osb->uuid_str == NULL)
1989 return -ENOMEM;
1990
Mark Fashehccd979b2005-12-15 14:31:24 -08001991 for (i = 0, ptr = osb->uuid_str; i < OCFS2_VOL_UUID_LEN; i++) {
1992 /* print with null */
1993 ret = snprintf(ptr, 3, "%02X", uuid[i]);
1994 if (ret != 2) /* drop super cleans up */
1995 return -EINVAL;
1996 /* then only advance past the last char */
1997 ptr += 2;
1998 }
1999
2000 return 0;
2001}
2002
Patrick J. LoPresti3bdb8ef2010-07-22 15:05:57 -07002003/* Make sure entire volume is addressable by our journal. Requires
2004 osb_clusters_at_boot to be valid and for the journal to have been
2005 initialized by ocfs2_journal_init(). */
2006static int ocfs2_journal_addressable(struct ocfs2_super *osb)
2007{
2008 int status = 0;
2009 u64 max_block =
2010 ocfs2_clusters_to_blocks(osb->sb,
2011 osb->osb_clusters_at_boot) - 1;
2012
2013 /* 32-bit block number is always OK. */
2014 if (max_block <= (u32)~0ULL)
2015 goto out;
2016
2017 /* Volume is "huge", so see if our journal is new enough to
2018 support it. */
2019 if (!(OCFS2_HAS_COMPAT_FEATURE(osb->sb,
2020 OCFS2_FEATURE_COMPAT_JBD2_SB) &&
2021 jbd2_journal_check_used_features(osb->journal->j_journal, 0, 0,
2022 JBD2_FEATURE_INCOMPAT_64BIT))) {
2023 mlog(ML_ERROR, "The journal cannot address the entire volume. "
2024 "Enable the 'block64' journal option with tunefs.ocfs2");
2025 status = -EFBIG;
2026 goto out;
2027 }
2028
2029 out:
2030 return status;
2031}
2032
Mark Fashehccd979b2005-12-15 14:31:24 -08002033static int ocfs2_initialize_super(struct super_block *sb,
2034 struct buffer_head *bh,
Joel Becker73be1922009-01-06 14:57:08 -08002035 int sector_size,
2036 struct ocfs2_blockcheck_stats *stats)
Mark Fashehccd979b2005-12-15 14:31:24 -08002037{
Denis Chengbddb8eb32007-09-27 02:10:04 +08002038 int status;
Mark Fasheh5a254032007-07-20 12:56:16 -07002039 int i, cbits, bbits;
2040 struct ocfs2_dinode *di = (struct ocfs2_dinode *)bh->b_data;
Mark Fashehccd979b2005-12-15 14:31:24 -08002041 struct inode *inode = NULL;
Mark Fashehccd979b2005-12-15 14:31:24 -08002042 struct ocfs2_journal *journal;
Mark Fashehccd979b2005-12-15 14:31:24 -08002043 struct ocfs2_super *osb;
Patrick J. LoPresti3bdb8ef2010-07-22 15:05:57 -07002044 u64 total_blocks;
Mark Fashehccd979b2005-12-15 14:31:24 -08002045
Robert P. J. Daycd861282006-12-13 00:34:52 -08002046 osb = kzalloc(sizeof(struct ocfs2_super), GFP_KERNEL);
Mark Fashehccd979b2005-12-15 14:31:24 -08002047 if (!osb) {
2048 status = -ENOMEM;
2049 mlog_errno(status);
2050 goto bail;
2051 }
2052
2053 sb->s_fs_info = osb;
2054 sb->s_op = &ocfs2_sops;
Al Viroba871672010-12-18 12:10:00 -05002055 sb->s_d_op = &ocfs2_dentry_ops;
Mark Fashehccd979b2005-12-15 14:31:24 -08002056 sb->s_export_op = &ocfs2_export_ops;
Jan Kara664dbd52014-10-08 18:30:19 +02002057 sb->s_qcop = &dquot_quotactl_sysfile_ops;
Jan Kara19ece542008-08-21 20:13:17 +02002058 sb->dq_op = &ocfs2_quota_operations;
Jan Kara1c92ec62014-09-29 15:02:51 +02002059 sb->s_quota_types = QTYPE_MASK_USR | QTYPE_MASK_GRP;
Tiger Yangcf1d6c72008-08-18 17:11:00 +08002060 sb->s_xattr = ocfs2_xattr_handlers;
Mark Fashehe0dceaf2007-08-09 16:52:30 -07002061 sb->s_time_gran = 1;
Mark Fashehccd979b2005-12-15 14:31:24 -08002062 sb->s_flags |= MS_NOATIME;
2063 /* this is needed to support O_LARGEFILE */
Mark Fasheh5a254032007-07-20 12:56:16 -07002064 cbits = le32_to_cpu(di->id2.i_super.s_clustersize_bits);
2065 bbits = le32_to_cpu(di->id2.i_super.s_blocksize_bits);
2066 sb->s_maxbytes = ocfs2_max_file_offset(bbits, cbits);
Christoph Hellwig85787092017-05-10 15:06:33 +02002067 memcpy(&sb->s_uuid, di->id2.i_super.s_uuid,
Vladimir Davydov58be19d2015-04-14 15:46:39 -07002068 sizeof(di->id2.i_super.s_uuid));
Mark Fashehccd979b2005-12-15 14:31:24 -08002069
Mark Fasheh9b7895e2008-11-12 16:27:44 -08002070 osb->osb_dx_mask = (1 << (cbits - bbits)) - 1;
2071
2072 for (i = 0; i < 3; i++)
2073 osb->osb_dx_seed[i] = le32_to_cpu(di->id2.i_super.s_dx_seed[i]);
2074 osb->osb_dx_seed[3] = le32_to_cpu(di->id2.i_super.s_uuid_hash);
2075
Mark Fashehccd979b2005-12-15 14:31:24 -08002076 osb->sb = sb;
Mark Fashehccd979b2005-12-15 14:31:24 -08002077 osb->s_sectsize_bits = blksize_bits(sector_size);
Eric Sesterhenn / snakebyteebdec832006-01-27 10:32:52 +01002078 BUG_ON(!osb->s_sectsize_bits);
Mark Fashehccd979b2005-12-15 14:31:24 -08002079
Mark Fasheh34d024f2007-09-24 15:56:19 -07002080 spin_lock_init(&osb->dc_task_lock);
2081 init_waitqueue_head(&osb->dc_event);
2082 osb->dc_work_sequence = 0;
2083 osb->dc_wake_sequence = 0;
Mark Fashehccd979b2005-12-15 14:31:24 -08002084 INIT_LIST_HEAD(&osb->blocked_lock_list);
2085 osb->blocked_lock_count = 0;
Mark Fashehccd979b2005-12-15 14:31:24 -08002086 spin_lock_init(&osb->osb_lock);
Tao Mac8b9cf92009-02-24 17:40:26 -08002087 spin_lock_init(&osb->osb_xattr_lock);
Tiger Yangb89c5422010-01-25 14:11:06 +08002088 ocfs2_init_steal_slots(osb);
Mark Fashehccd979b2005-12-15 14:31:24 -08002089
jiangyiwen43b10a22014-04-03 14:47:13 -07002090 mutex_init(&osb->system_file_mutex);
2091
Mark Fashehccd979b2005-12-15 14:31:24 -08002092 atomic_set(&osb->alloc_stats.moves, 0);
2093 atomic_set(&osb->alloc_stats.local_data, 0);
2094 atomic_set(&osb->alloc_stats.bitmap_data, 0);
2095 atomic_set(&osb->alloc_stats.bg_allocs, 0);
2096 atomic_set(&osb->alloc_stats.bg_extends, 0);
2097
Joel Becker73be1922009-01-06 14:57:08 -08002098 /* Copy the blockcheck stats from the superblock probe */
2099 osb->osb_ecc_stats = *stats;
2100
Mark Fashehccd979b2005-12-15 14:31:24 -08002101 ocfs2_init_node_maps(osb);
2102
2103 snprintf(osb->dev_str, sizeof(osb->dev_str), "%u,%u",
2104 MAJOR(osb->sb->s_dev), MINOR(osb->sb->s_dev));
2105
Goldwyn Rodrigues75d9bbc2010-10-11 12:57:09 -05002106 osb->max_slots = le16_to_cpu(di->id2.i_super.s_max_slots);
2107 if (osb->max_slots > OCFS2_MAX_SLOTS || osb->max_slots == 0) {
2108 mlog(ML_ERROR, "Invalid number of node slots (%u)\n",
2109 osb->max_slots);
2110 status = -EINVAL;
2111 goto bail;
2112 }
Goldwyn Rodrigues75d9bbc2010-10-11 12:57:09 -05002113
Jeff Mahoney8b712cd2009-07-07 17:22:12 -04002114 ocfs2_orphan_scan_init(osb);
2115
Joel Becker553abd02008-02-01 12:03:57 -08002116 status = ocfs2_recovery_init(osb);
2117 if (status) {
2118 mlog(ML_ERROR, "Unable to initialize recovery state\n");
2119 mlog_errno(status);
2120 goto bail;
2121 }
Mark Fashehccd979b2005-12-15 14:31:24 -08002122
2123 init_waitqueue_head(&osb->checkpoint_event);
Mark Fashehccd979b2005-12-15 14:31:24 -08002124
Tiger Yang7f1a37e2006-11-15 15:48:42 +08002125 osb->s_atime_quantum = OCFS2_DEFAULT_ATIME_QUANTUM;
2126
Mark Fashehccd979b2005-12-15 14:31:24 -08002127 osb->slot_num = OCFS2_INVALID_SLOT;
2128
Tiger Yang8154da32008-08-18 17:11:46 +08002129 osb->s_xattr_inline_size = le16_to_cpu(
2130 di->id2.i_super.s_xattr_inline_size);
Tiger Yangfdd77702008-08-18 17:08:55 +08002131
Mark Fashehccd979b2005-12-15 14:31:24 -08002132 osb->local_alloc_state = OCFS2_LA_UNUSED;
2133 osb->local_alloc_bh = NULL;
Mark Fasheh9c7af402008-07-28 18:02:53 -07002134 INIT_DELAYED_WORK(&osb->la_enable_wq, ocfs2_la_enable_worker);
Mark Fashehccd979b2005-12-15 14:31:24 -08002135
Mark Fashehccd979b2005-12-15 14:31:24 -08002136 init_waitqueue_head(&osb->osb_mount_event);
2137
Mark Fashehd02f00c2009-12-07 13:10:48 -08002138 status = ocfs2_resmap_init(osb, &osb->osb_la_resmap);
2139 if (status) {
2140 mlog_errno(status);
2141 goto bail;
2142 }
2143
Mark Fashehccd979b2005-12-15 14:31:24 -08002144 osb->vol_label = kmalloc(OCFS2_MAX_VOL_LABEL_LEN, GFP_KERNEL);
2145 if (!osb->vol_label) {
2146 mlog(ML_ERROR, "unable to alloc vol label\n");
2147 status = -ENOMEM;
2148 goto bail;
2149 }
2150
Sunil Mushran539d8262008-07-14 17:31:10 -07002151 osb->slot_recovery_generations =
2152 kcalloc(osb->max_slots, sizeof(*osb->slot_recovery_generations),
2153 GFP_KERNEL);
2154 if (!osb->slot_recovery_generations) {
2155 status = -ENOMEM;
2156 mlog_errno(status);
2157 goto bail;
2158 }
2159
Mark Fashehb4df6ed2006-02-22 17:35:08 -08002160 init_waitqueue_head(&osb->osb_wipe_event);
2161 osb->osb_orphan_wipes = kcalloc(osb->max_slots,
2162 sizeof(*osb->osb_orphan_wipes),
2163 GFP_KERNEL);
2164 if (!osb->osb_orphan_wipes) {
2165 status = -ENOMEM;
2166 mlog_errno(status);
2167 goto bail;
2168 }
2169
Tao Ma374a2632009-08-24 11:13:37 +08002170 osb->osb_rf_lock_tree = RB_ROOT;
2171
Mark Fashehccd979b2005-12-15 14:31:24 -08002172 osb->s_feature_compat =
2173 le32_to_cpu(OCFS2_RAW_SB(di)->s_feature_compat);
2174 osb->s_feature_ro_compat =
2175 le32_to_cpu(OCFS2_RAW_SB(di)->s_feature_ro_compat);
2176 osb->s_feature_incompat =
2177 le32_to_cpu(OCFS2_RAW_SB(di)->s_feature_incompat);
2178
2179 if ((i = OCFS2_HAS_INCOMPAT_FEATURE(osb->sb, ~OCFS2_FEATURE_INCOMPAT_SUPP))) {
2180 mlog(ML_ERROR, "couldn't mount because of unsupported "
2181 "optional features (%x).\n", i);
2182 status = -EINVAL;
2183 goto bail;
2184 }
David Howellsbc98a422017-07-17 08:45:34 +01002185 if (!sb_rdonly(osb->sb) && (i = OCFS2_HAS_RO_COMPAT_FEATURE(osb->sb, ~OCFS2_FEATURE_RO_COMPAT_SUPP))) {
Mark Fashehccd979b2005-12-15 14:31:24 -08002186 mlog(ML_ERROR, "couldn't mount RDWR because of "
2187 "unsupported optional features (%x).\n", i);
2188 status = -EINVAL;
2189 goto bail;
2190 }
2191
Sunil Mushran98f486f22010-10-09 10:24:46 -07002192 if (ocfs2_clusterinfo_valid(osb)) {
Valentin Vidic232ed972021-10-18 15:15:42 -07002193 /*
2194 * ci_stack and ci_cluster in ocfs2_cluster_info may not be null
2195 * terminated, so make sure no overflow happens here by using
2196 * memcpy. Destination strings will always be null terminated
2197 * because osb is allocated using kzalloc.
2198 */
Sunil Mushran98f486f22010-10-09 10:24:46 -07002199 osb->osb_stackflags =
2200 OCFS2_RAW_SB(di)->s_cluster_info.ci_stackflags;
Valentin Vidic232ed972021-10-18 15:15:42 -07002201 memcpy(osb->osb_cluster_stack,
Joel Beckerb61817e2008-02-01 15:08:23 -08002202 OCFS2_RAW_SB(di)->s_cluster_info.ci_stack,
Valentin Vidic232ed972021-10-18 15:15:42 -07002203 OCFS2_STACK_LABEL_LEN);
Joel Beckerb61817e2008-02-01 15:08:23 -08002204 if (strlen(osb->osb_cluster_stack) != OCFS2_STACK_LABEL_LEN) {
2205 mlog(ML_ERROR,
2206 "couldn't mount because of an invalid "
2207 "cluster stack label (%s) \n",
2208 osb->osb_cluster_stack);
2209 status = -EINVAL;
2210 goto bail;
2211 }
Valentin Vidic232ed972021-10-18 15:15:42 -07002212 memcpy(osb->osb_cluster_name,
Goldwyn Rodriguesc74a3bd2014-01-21 15:48:21 -08002213 OCFS2_RAW_SB(di)->s_cluster_info.ci_cluster,
Valentin Vidic232ed972021-10-18 15:15:42 -07002214 OCFS2_CLUSTER_NAME_LEN);
Joel Beckerb61817e2008-02-01 15:08:23 -08002215 } else {
2216 /* The empty string is identical with classic tools that
2217 * don't know about s_cluster_info. */
2218 osb->osb_cluster_stack[0] = '\0';
2219 }
2220
Mark Fashehccd979b2005-12-15 14:31:24 -08002221 get_random_bytes(&osb->s_next_generation, sizeof(u32));
2222
2223 /* FIXME
2224 * This should be done in ocfs2_journal_init(), but unknown
2225 * ordering issues will cause the filesystem to crash.
2226 * If anyone wants to figure out what part of the code
2227 * refers to osb->journal before ocfs2_journal_init() is run,
2228 * be my guest.
2229 */
2230 /* initialize our journal structure */
2231
Robert P. J. Daycd861282006-12-13 00:34:52 -08002232 journal = kzalloc(sizeof(struct ocfs2_journal), GFP_KERNEL);
Mark Fashehccd979b2005-12-15 14:31:24 -08002233 if (!journal) {
2234 mlog(ML_ERROR, "unable to alloc journal\n");
2235 status = -ENOMEM;
2236 goto bail;
2237 }
2238 osb->journal = journal;
2239 journal->j_osb = osb;
2240
2241 atomic_set(&journal->j_num_trans, 0);
2242 init_rwsem(&journal->j_trans_barrier);
2243 init_waitqueue_head(&journal->j_checkpointed);
2244 spin_lock_init(&journal->j_lock);
2245 journal->j_trans_id = (unsigned long) 1;
2246 INIT_LIST_HEAD(&journal->j_la_cleanups);
David Howellsc4028952006-11-22 14:57:56 +00002247 INIT_WORK(&journal->j_recovery_work, ocfs2_complete_recovery);
Mark Fashehccd979b2005-12-15 14:31:24 -08002248 journal->j_state = OCFS2_JOURNAL_FREE;
2249
Jan Karae3a767b2014-04-03 14:46:56 -07002250 INIT_WORK(&osb->dquot_drop_work, ocfs2_drop_dquot_refs);
2251 init_llist_head(&osb->dquot_drop_list);
2252
Mark Fashehccd979b2005-12-15 14:31:24 -08002253 /* get some pseudo constants for clustersize bits */
2254 osb->s_clustersize_bits =
2255 le32_to_cpu(di->id2.i_super.s_clustersize_bits);
2256 osb->s_clustersize = 1 << osb->s_clustersize_bits;
Mark Fashehccd979b2005-12-15 14:31:24 -08002257
2258 if (osb->s_clustersize < OCFS2_MIN_CLUSTERSIZE ||
2259 osb->s_clustersize > OCFS2_MAX_CLUSTERSIZE) {
2260 mlog(ML_ERROR, "Volume has invalid cluster size (%d)\n",
2261 osb->s_clustersize);
2262 status = -EINVAL;
2263 goto bail;
2264 }
2265
Patrick J. LoPresti3bdb8ef2010-07-22 15:05:57 -07002266 total_blocks = ocfs2_clusters_to_blocks(osb->sb,
2267 le32_to_cpu(di->i_clusters));
2268
2269 status = generic_check_addressable(osb->sb->s_blocksize_bits,
2270 total_blocks);
2271 if (status) {
2272 mlog(ML_ERROR, "Volume too large "
2273 "to mount safely on this system");
2274 status = -EFBIG;
Mark Fashehccd979b2005-12-15 14:31:24 -08002275 goto bail;
2276 }
2277
2278 if (ocfs2_setup_osb_uuid(osb, di->id2.i_super.s_uuid,
2279 sizeof(di->id2.i_super.s_uuid))) {
2280 mlog(ML_ERROR, "Out of memory trying to setup our uuid.\n");
2281 status = -ENOMEM;
2282 goto bail;
2283 }
2284
Fabian Frederick69201bb2014-06-04 16:06:07 -07002285 strlcpy(osb->vol_label, di->id2.i_super.s_label,
2286 OCFS2_MAX_VOL_LABEL_LEN);
Mark Fashehccd979b2005-12-15 14:31:24 -08002287 osb->root_blkno = le64_to_cpu(di->id2.i_super.s_root_blkno);
2288 osb->system_dir_blkno = le64_to_cpu(di->id2.i_super.s_system_dir_blkno);
2289 osb->first_cluster_group_blkno =
2290 le64_to_cpu(di->id2.i_super.s_first_cluster_group);
2291 osb->fs_generation = le32_to_cpu(di->i_fs_generation);
Tiger Yangcf1d6c72008-08-18 17:11:00 +08002292 osb->uuid_hash = le32_to_cpu(di->id2.i_super.s_uuid_hash);
Tao Ma32a42d32011-02-23 21:29:08 +08002293 trace_ocfs2_initialize_super(osb->vol_label, osb->uuid_str,
2294 (unsigned long long)osb->root_blkno,
2295 (unsigned long long)osb->system_dir_blkno,
2296 osb->s_clustersize_bits);
Mark Fashehccd979b2005-12-15 14:31:24 -08002297
2298 osb->osb_dlm_debug = ocfs2_new_dlm_debug();
2299 if (!osb->osb_dlm_debug) {
2300 status = -ENOMEM;
2301 mlog_errno(status);
2302 goto bail;
2303 }
2304
2305 atomic_set(&osb->vol_state, VOLUME_INIT);
2306
2307 /* load root, system_dir, and all global system inodes */
2308 status = ocfs2_init_global_system_inodes(osb);
2309 if (status < 0) {
2310 mlog_errno(status);
2311 goto bail;
2312 }
2313
2314 /*
2315 * global bitmap
2316 */
2317 inode = ocfs2_get_system_file_inode(osb, GLOBAL_BITMAP_SYSTEM_INODE,
2318 OCFS2_INVALID_SLOT);
2319 if (!inode) {
2320 status = -EINVAL;
2321 mlog_errno(status);
2322 goto bail;
2323 }
2324
2325 osb->bitmap_blkno = OCFS2_I(inode)->ip_blkno;
Mark Fasheh6b820212010-04-05 18:17:14 -07002326 osb->osb_clusters_at_boot = OCFS2_I(inode)->ip_clusters;
Mark Fashehccd979b2005-12-15 14:31:24 -08002327 iput(inode);
Mark Fashehccd979b2005-12-15 14:31:24 -08002328
Tao Ma85718822010-04-13 14:38:06 +08002329 osb->bitmap_cpg = ocfs2_group_bitmap_size(sb, 0,
2330 osb->s_feature_incompat) * 8;
Mark Fashehccd979b2005-12-15 14:31:24 -08002331
2332 status = ocfs2_init_slot_info(osb);
2333 if (status < 0) {
2334 mlog_errno(status);
2335 goto bail;
2336 }
Vladimir Davydov9de16262015-04-14 15:46:42 -07002337 cleancache_init_shared_fs(sb);
Mark Fashehccd979b2005-12-15 14:31:24 -08002338
Bhaktipriya Shridhar44be9752016-10-07 16:57:13 -07002339 osb->ocfs2_wq = alloc_ordered_workqueue("ocfs2_wq", WQ_MEM_RECLAIM);
jiangyiwen35ddf782016-03-25 14:21:32 -07002340 if (!osb->ocfs2_wq) {
2341 status = -ENOMEM;
2342 mlog_errno(status);
2343 }
2344
Mark Fashehccd979b2005-12-15 14:31:24 -08002345bail:
Mark Fashehccd979b2005-12-15 14:31:24 -08002346 return status;
2347}
2348
2349/*
2350 * will return: -EAGAIN if it is ok to keep searching for superblocks
2351 * -EINVAL if there is a bad superblock
2352 * 0 on success
2353 */
2354static int ocfs2_verify_volume(struct ocfs2_dinode *di,
2355 struct buffer_head *bh,
Joel Becker73be1922009-01-06 14:57:08 -08002356 u32 blksz,
2357 struct ocfs2_blockcheck_stats *stats)
Mark Fashehccd979b2005-12-15 14:31:24 -08002358{
2359 int status = -EAGAIN;
2360
Mark Fashehccd979b2005-12-15 14:31:24 -08002361 if (memcmp(di->i_signature, OCFS2_SUPER_BLOCK_SIGNATURE,
2362 strlen(OCFS2_SUPER_BLOCK_SIGNATURE)) == 0) {
Joel Beckerd030cc92008-12-11 15:04:14 -08002363 /* We have to do a raw check of the feature here */
2364 if (le32_to_cpu(di->id2.i_super.s_feature_incompat) &
2365 OCFS2_FEATURE_INCOMPAT_META_ECC) {
2366 status = ocfs2_block_check_validate(bh->b_data,
2367 bh->b_size,
Joel Becker73be1922009-01-06 14:57:08 -08002368 &di->i_check,
2369 stats);
Joel Beckerd030cc92008-12-11 15:04:14 -08002370 if (status)
2371 goto out;
2372 }
Mark Fashehccd979b2005-12-15 14:31:24 -08002373 status = -EINVAL;
2374 if ((1 << le32_to_cpu(di->id2.i_super.s_blocksize_bits)) != blksz) {
2375 mlog(ML_ERROR, "found superblock with incorrect block "
2376 "size: found %u, should be %u\n",
2377 1 << le32_to_cpu(di->id2.i_super.s_blocksize_bits),
2378 blksz);
2379 } else if (le16_to_cpu(di->id2.i_super.s_major_rev_level) !=
2380 OCFS2_MAJOR_REV_LEVEL ||
2381 le16_to_cpu(di->id2.i_super.s_minor_rev_level) !=
2382 OCFS2_MINOR_REV_LEVEL) {
2383 mlog(ML_ERROR, "found superblock with bad version: "
2384 "found %u.%u, should be %u.%u\n",
2385 le16_to_cpu(di->id2.i_super.s_major_rev_level),
2386 le16_to_cpu(di->id2.i_super.s_minor_rev_level),
2387 OCFS2_MAJOR_REV_LEVEL,
2388 OCFS2_MINOR_REV_LEVEL);
2389 } else if (bh->b_blocknr != le64_to_cpu(di->i_blkno)) {
2390 mlog(ML_ERROR, "bad block number on superblock: "
Mark Fashehb06970532006-03-03 10:24:33 -08002391 "found %llu, should be %llu\n",
Mark Fasheh1ca1a112007-04-27 16:01:25 -07002392 (unsigned long long)le64_to_cpu(di->i_blkno),
Mark Fashehb06970532006-03-03 10:24:33 -08002393 (unsigned long long)bh->b_blocknr);
Mark Fashehccd979b2005-12-15 14:31:24 -08002394 } else if (le32_to_cpu(di->id2.i_super.s_clustersize_bits) < 12 ||
2395 le32_to_cpu(di->id2.i_super.s_clustersize_bits) > 20) {
2396 mlog(ML_ERROR, "bad cluster size found: %u\n",
2397 1 << le32_to_cpu(di->id2.i_super.s_clustersize_bits));
2398 } else if (!le64_to_cpu(di->id2.i_super.s_root_blkno)) {
2399 mlog(ML_ERROR, "bad root_blkno: 0\n");
2400 } else if (!le64_to_cpu(di->id2.i_super.s_system_dir_blkno)) {
2401 mlog(ML_ERROR, "bad system_dir_blkno: 0\n");
2402 } else if (le16_to_cpu(di->id2.i_super.s_max_slots) > OCFS2_MAX_SLOTS) {
2403 mlog(ML_ERROR,
2404 "Superblock slots found greater than file system "
2405 "maximum: found %u, max %u\n",
2406 le16_to_cpu(di->id2.i_super.s_max_slots),
2407 OCFS2_MAX_SLOTS);
2408 } else {
2409 /* found it! */
2410 status = 0;
2411 }
2412 }
2413
Joel Beckerd030cc92008-12-11 15:04:14 -08002414out:
Tao Mac1e8d352011-03-07 16:43:21 +08002415 if (status && status != -EAGAIN)
2416 mlog_errno(status);
Mark Fashehccd979b2005-12-15 14:31:24 -08002417 return status;
2418}
2419
2420static int ocfs2_check_volume(struct ocfs2_super *osb)
2421{
Denis Chengbddb8eb32007-09-27 02:10:04 +08002422 int status;
Mark Fashehccd979b2005-12-15 14:31:24 -08002423 int dirty;
Sunil Mushranc271c5c2006-12-05 17:56:35 -08002424 int local;
Mark Fashehccd979b2005-12-15 14:31:24 -08002425 struct ocfs2_dinode *local_alloc = NULL; /* only used if we
2426 * recover
2427 * ourselves. */
2428
Mark Fashehccd979b2005-12-15 14:31:24 -08002429 /* Init our journal object. */
2430 status = ocfs2_journal_init(osb->journal, &dirty);
2431 if (status < 0) {
2432 mlog(ML_ERROR, "Could not initialize journal!\n");
2433 goto finally;
2434 }
2435
Patrick J. LoPresti3bdb8ef2010-07-22 15:05:57 -07002436 /* Now that journal has been initialized, check to make sure
2437 entire volume is addressable. */
2438 status = ocfs2_journal_addressable(osb);
2439 if (status)
2440 goto finally;
2441
Mark Fashehccd979b2005-12-15 14:31:24 -08002442 /* If the journal was unmounted cleanly then we don't want to
2443 * recover anything. Otherwise, journal_load will do that
2444 * dirty work for us :) */
2445 if (!dirty) {
2446 status = ocfs2_journal_wipe(osb->journal, 0);
2447 if (status < 0) {
2448 mlog_errno(status);
2449 goto finally;
2450 }
2451 } else {
Sunil Mushran619c2002011-07-24 10:34:54 -07002452 printk(KERN_NOTICE "ocfs2: File system on device (%s) was not "
2453 "unmounted cleanly, recovering it.\n", osb->dev_str);
Mark Fashehccd979b2005-12-15 14:31:24 -08002454 }
2455
Sunil Mushranc271c5c2006-12-05 17:56:35 -08002456 local = ocfs2_mount_local(osb);
2457
Mark Fashehccd979b2005-12-15 14:31:24 -08002458 /* will play back anything left in the journal. */
Sunil Mushran539d8262008-07-14 17:31:10 -07002459 status = ocfs2_journal_load(osb->journal, local, dirty);
Wengang Wang01af4822008-06-10 14:24:48 +08002460 if (status < 0) {
2461 mlog(ML_ERROR, "ocfs2 journal load failed! %d\n", status);
2462 goto finally;
2463 }
Mark Fashehccd979b2005-12-15 14:31:24 -08002464
alex chen1dfeb762015-02-10 14:09:04 -08002465 if (osb->s_mount_opt & OCFS2_MOUNT_JOURNAL_ASYNC_COMMIT)
2466 jbd2_journal_set_features(osb->journal->j_journal,
2467 JBD2_FEATURE_COMPAT_CHECKSUM, 0,
2468 JBD2_FEATURE_INCOMPAT_ASYNC_COMMIT);
2469 else
2470 jbd2_journal_clear_features(osb->journal->j_journal,
2471 JBD2_FEATURE_COMPAT_CHECKSUM, 0,
2472 JBD2_FEATURE_INCOMPAT_ASYNC_COMMIT);
2473
Mark Fashehccd979b2005-12-15 14:31:24 -08002474 if (dirty) {
2475 /* recover my local alloc if we didn't unmount cleanly. */
2476 status = ocfs2_begin_local_alloc_recovery(osb,
2477 osb->slot_num,
2478 &local_alloc);
2479 if (status < 0) {
2480 mlog_errno(status);
2481 goto finally;
2482 }
2483 /* we complete the recovery process after we've marked
2484 * ourselves as mounted. */
2485 }
2486
Mark Fashehccd979b2005-12-15 14:31:24 -08002487 status = ocfs2_load_local_alloc(osb);
2488 if (status < 0) {
2489 mlog_errno(status);
2490 goto finally;
2491 }
2492
2493 if (dirty) {
2494 /* Recovery will be completed after we've mounted the
2495 * rest of the volume. */
Mark Fashehccd979b2005-12-15 14:31:24 -08002496 osb->local_alloc_copy = local_alloc;
2497 local_alloc = NULL;
2498 }
2499
2500 /* go through each journal, trylock it and if you get the
2501 * lock, and it's marked as dirty, set the bit in the recover
2502 * map and launch a recovery thread for it. */
2503 status = ocfs2_mark_dead_nodes(osb);
Srinivas Eeda9140db02009-03-06 14:21:46 -08002504 if (status < 0) {
2505 mlog_errno(status);
2506 goto finally;
2507 }
2508
2509 status = ocfs2_compute_replay_slots(osb);
Mark Fashehccd979b2005-12-15 14:31:24 -08002510 if (status < 0)
2511 mlog_errno(status);
2512
2513finally:
Tim Gardnerd787ab02013-02-21 16:42:44 -08002514 kfree(local_alloc);
Mark Fashehccd979b2005-12-15 14:31:24 -08002515
Tao Mac1e8d352011-03-07 16:43:21 +08002516 if (status)
2517 mlog_errno(status);
Mark Fashehccd979b2005-12-15 14:31:24 -08002518 return status;
2519}
2520
2521/*
2522 * The routine gets called from dismount or close whenever a dismount on
2523 * volume is requested and the osb open count becomes 1.
2524 * It will remove the osb from the global list and also free up all the
2525 * initialized resources and fileobject.
2526 */
2527static void ocfs2_delete_osb(struct ocfs2_super *osb)
2528{
Mark Fashehccd979b2005-12-15 14:31:24 -08002529 /* This function assumes that the caller has the main osb resource */
2530
jiangyiwen35ddf782016-03-25 14:21:32 -07002531 /* ocfs2_initializer_super have already created this workqueue */
2532 if (osb->ocfs2_wq) {
2533 flush_workqueue(osb->ocfs2_wq);
2534 destroy_workqueue(osb->ocfs2_wq);
2535 }
2536
Mark Fasheh8e8a4602008-02-01 11:59:09 -08002537 ocfs2_free_slot_info(osb);
Mark Fashehccd979b2005-12-15 14:31:24 -08002538
Mark Fashehb4df6ed2006-02-22 17:35:08 -08002539 kfree(osb->osb_orphan_wipes);
Sunil Mushran539d8262008-07-14 17:31:10 -07002540 kfree(osb->slot_recovery_generations);
Mark Fashehccd979b2005-12-15 14:31:24 -08002541 /* FIXME
2542 * This belongs in journal shutdown, but because we have to
Uwe Kleine-König421f91d2010-06-11 12:17:00 +02002543 * allocate osb->journal at the start of ocfs2_initialize_osb(),
Mark Fashehccd979b2005-12-15 14:31:24 -08002544 * we free it here.
2545 */
2546 kfree(osb->journal);
Tim Gardnerd787ab02013-02-21 16:42:44 -08002547 kfree(osb->local_alloc_copy);
Mark Fashehccd979b2005-12-15 14:31:24 -08002548 kfree(osb->uuid_str);
Joseph Qif13a5682014-09-25 16:05:11 -07002549 kfree(osb->vol_label);
Mark Fashehccd979b2005-12-15 14:31:24 -08002550 ocfs2_put_dlm_debug(osb->osb_dlm_debug);
2551 memset(osb, 0, sizeof(struct ocfs2_super));
Mark Fashehccd979b2005-12-15 14:31:24 -08002552}
2553
Goldwyn Rodrigues7d0fb912015-09-04 15:44:11 -07002554/* Depending on the mount option passed, perform one of the following:
2555 * Put OCFS2 into a readonly state (default)
2556 * Return EIO so that only the process errs
2557 * Fix the error as if fsck.ocfs2 -y
2558 * panic
2559 */
2560static int ocfs2_handle_error(struct super_block *sb)
Mark Fashehccd979b2005-12-15 14:31:24 -08002561{
2562 struct ocfs2_super *osb = OCFS2_SB(sb);
Goldwyn Rodrigues7d0fb912015-09-04 15:44:11 -07002563 int rv = 0;
Mark Fashehccd979b2005-12-15 14:31:24 -08002564
2565 ocfs2_set_osb_flag(osb, OCFS2_OSB_ERROR_FS);
Goldwyn Rodrigues7d0fb912015-09-04 15:44:11 -07002566 pr_crit("On-disk corruption discovered. "
2567 "Please run fsck.ocfs2 once the filesystem is unmounted.\n");
Mark Fashehccd979b2005-12-15 14:31:24 -08002568
Goldwyn Rodrigues7d0fb912015-09-04 15:44:11 -07002569 if (osb->s_mount_opt & OCFS2_MOUNT_ERRORS_PANIC) {
2570 panic("OCFS2: (device %s): panic forced after error\n",
2571 sb->s_id);
2572 } else if (osb->s_mount_opt & OCFS2_MOUNT_ERRORS_CONT) {
2573 pr_crit("OCFS2: Returning error to the calling process.\n");
2574 rv = -EIO;
2575 } else { /* default option */
2576 rv = -EROFS;
David Howellsbc98a422017-07-17 08:45:34 +01002577 if (sb_rdonly(sb) && (ocfs2_is_soft_readonly(osb) || ocfs2_is_hard_readonly(osb)))
Goldwyn Rodrigues7d0fb912015-09-04 15:44:11 -07002578 return rv;
Mark Fashehccd979b2005-12-15 14:31:24 -08002579
Goldwyn Rodrigues7d0fb912015-09-04 15:44:11 -07002580 pr_crit("OCFS2: File system is now read-only.\n");
2581 sb->s_flags |= MS_RDONLY;
2582 ocfs2_set_ro_flag(osb, 0);
2583 }
2584
2585 return rv;
Mark Fashehccd979b2005-12-15 14:31:24 -08002586}
2587
Goldwyn Rodrigues7d0fb912015-09-04 15:44:11 -07002588int __ocfs2_error(struct super_block *sb, const char *function,
Joe Perches15433062015-04-14 15:43:46 -07002589 const char *fmt, ...)
Mark Fashehccd979b2005-12-15 14:31:24 -08002590{
Joe Perches15433062015-04-14 15:43:46 -07002591 struct va_format vaf;
Mark Fashehccd979b2005-12-15 14:31:24 -08002592 va_list args;
2593
2594 va_start(args, fmt);
Joe Perches15433062015-04-14 15:43:46 -07002595 vaf.fmt = fmt;
2596 vaf.va = &args;
Mark Fashehccd979b2005-12-15 14:31:24 -08002597
2598 /* Not using mlog here because we want to show the actual
2599 * function the error came from. */
Joe Perches7ecef142015-09-04 15:44:51 -07002600 printk(KERN_CRIT "OCFS2: ERROR (device %s): %s: %pV",
Joe Perches15433062015-04-14 15:43:46 -07002601 sb->s_id, function, &vaf);
2602
2603 va_end(args);
Mark Fashehccd979b2005-12-15 14:31:24 -08002604
Goldwyn Rodrigues7d0fb912015-09-04 15:44:11 -07002605 return ocfs2_handle_error(sb);
Mark Fashehccd979b2005-12-15 14:31:24 -08002606}
2607
2608/* Handle critical errors. This is intentionally more drastic than
2609 * ocfs2_handle_error, so we only use for things like journal errors,
2610 * etc. */
Joe Perches15433062015-04-14 15:43:46 -07002611void __ocfs2_abort(struct super_block *sb, const char *function,
Mark Fashehccd979b2005-12-15 14:31:24 -08002612 const char *fmt, ...)
2613{
Joe Perches15433062015-04-14 15:43:46 -07002614 struct va_format vaf;
Mark Fashehccd979b2005-12-15 14:31:24 -08002615 va_list args;
2616
2617 va_start(args, fmt);
Mark Fashehccd979b2005-12-15 14:31:24 -08002618
Joe Perches15433062015-04-14 15:43:46 -07002619 vaf.fmt = fmt;
2620 vaf.va = &args;
2621
Joe Perches7ecef142015-09-04 15:44:51 -07002622 printk(KERN_CRIT "OCFS2: abort (device %s): %s: %pV",
Joe Perches15433062015-04-14 15:43:46 -07002623 sb->s_id, function, &vaf);
2624
2625 va_end(args);
Mark Fashehccd979b2005-12-15 14:31:24 -08002626
2627 /* We don't have the cluster support yet to go straight to
2628 * hard readonly in here. Until then, we want to keep
2629 * ocfs2_abort() so that we can at least mark critical
2630 * errors.
2631 *
2632 * TODO: This should abort the journal and alert other nodes
2633 * that our slot needs recovery. */
2634
2635 /* Force a panic(). This stinks, but it's better than letting
2636 * things continue without having a proper hard readonly
2637 * here. */
Sunil Mushrana2f2ddb2009-08-19 15:16:01 -07002638 if (!ocfs2_mount_local(OCFS2_SB(sb)))
2639 OCFS2_SB(sb)->s_mount_opt |= OCFS2_MOUNT_ERRORS_PANIC;
Mark Fashehccd979b2005-12-15 14:31:24 -08002640 ocfs2_handle_error(sb);
2641}
2642
Joel Beckere4b963f2009-09-02 17:17:36 -07002643/*
2644 * Void signal blockers, because in-kernel sigprocmask() only fails
2645 * when SIG_* is wrong.
2646 */
2647void ocfs2_block_signals(sigset_t *oldset)
2648{
2649 int rc;
2650 sigset_t blocked;
2651
2652 sigfillset(&blocked);
2653 rc = sigprocmask(SIG_BLOCK, &blocked, oldset);
2654 BUG_ON(rc);
2655}
2656
2657void ocfs2_unblock_signals(sigset_t *oldset)
2658{
2659 int rc = sigprocmask(SIG_SETMASK, oldset, NULL);
2660 BUG_ON(rc);
2661}
2662
Mark Fashehccd979b2005-12-15 14:31:24 -08002663module_init(ocfs2_init);
2664module_exit(ocfs2_exit);