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1/*
2 * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
3 * Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved.
4 *
5 * This copyrighted material is made available to anyone wishing to use,
6 * modify, copy, or redistribute it subject to the terms and conditions
7 * of the GNU General Public License version 2.
8 */
9
10#include <linux/spinlock.h>
11#include <linux/completion.h>
12#include <linux/buffer_head.h>
13#include <linux/crc32.h>
14#include <linux/gfs2_ondisk.h>
15#include <asm/uaccess.h>
16
17#include "gfs2.h"
18#include "incore.h"
19#include "glock.h"
20#include "util.h"
21
22struct kmem_cache *gfs2_glock_cachep __read_mostly;
23struct kmem_cache *gfs2_glock_aspace_cachep __read_mostly;
24struct kmem_cache *gfs2_inode_cachep __read_mostly;
25struct kmem_cache *gfs2_bufdata_cachep __read_mostly;
26struct kmem_cache *gfs2_rgrpd_cachep __read_mostly;
27struct kmem_cache *gfs2_quotad_cachep __read_mostly;
28
29void gfs2_assert_i(struct gfs2_sbd *sdp)
30{
31 printk(KERN_EMERG "GFS2: fsid=%s: fatal assertion failed\n",
32 sdp->sd_fsname);
33}
34
35int gfs2_lm_withdraw(struct gfs2_sbd *sdp, char *fmt, ...)
36{
37 struct lm_lockstruct *ls = &sdp->sd_lockstruct;
38 const struct lm_lockops *lm = ls->ls_ops;
39 va_list args;
40
41 if (sdp->sd_args.ar_errors == GFS2_ERRORS_WITHDRAW &&
42 test_and_set_bit(SDF_SHUTDOWN, &sdp->sd_flags))
43 return 0;
44
45 va_start(args, fmt);
46 vprintk(fmt, args);
47 va_end(args);
48
49 if (sdp->sd_args.ar_errors == GFS2_ERRORS_WITHDRAW) {
50 fs_err(sdp, "about to withdraw this file system\n");
51 BUG_ON(sdp->sd_args.ar_debug);
52
53 kobject_uevent(&sdp->sd_kobj, KOBJ_OFFLINE);
54
55 if (lm->lm_unmount) {
56 fs_err(sdp, "telling LM to unmount\n");
57 lm->lm_unmount(sdp);
58 }
59 fs_err(sdp, "withdrawn\n");
60 dump_stack();
61 }
62
63 if (sdp->sd_args.ar_errors == GFS2_ERRORS_PANIC)
64 panic("GFS2: fsid=%s: panic requested.\n", sdp->sd_fsname);
65
66 return -1;
67}
68
69/**
70 * gfs2_assert_withdraw_i - Cause the machine to withdraw if @assertion is false
71 * Returns: -1 if this call withdrew the machine,
72 * -2 if it was already withdrawn
73 */
74
75int gfs2_assert_withdraw_i(struct gfs2_sbd *sdp, char *assertion,
76 const char *function, char *file, unsigned int line)
77{
78 int me;
79 me = gfs2_lm_withdraw(sdp,
80 "GFS2: fsid=%s: fatal: assertion \"%s\" failed\n"
81 "GFS2: fsid=%s: function = %s, file = %s, line = %u\n",
82 sdp->sd_fsname, assertion,
83 sdp->sd_fsname, function, file, line);
84 dump_stack();
85 return (me) ? -1 : -2;
86}
87
88/**
89 * gfs2_assert_warn_i - Print a message to the console if @assertion is false
90 * Returns: -1 if we printed something
91 * -2 if we didn't
92 */
93
94int gfs2_assert_warn_i(struct gfs2_sbd *sdp, char *assertion,
95 const char *function, char *file, unsigned int line)
96{
97 if (time_before(jiffies,
98 sdp->sd_last_warning +
99 gfs2_tune_get(sdp, gt_complain_secs) * HZ))
100 return -2;
101
102 if (sdp->sd_args.ar_errors == GFS2_ERRORS_WITHDRAW)
103 printk(KERN_WARNING
104 "GFS2: fsid=%s: warning: assertion \"%s\" failed\n"
105 "GFS2: fsid=%s: function = %s, file = %s, line = %u\n",
106 sdp->sd_fsname, assertion,
107 sdp->sd_fsname, function, file, line);
108
109 if (sdp->sd_args.ar_debug)
110 BUG();
111 else
112 dump_stack();
113
114 if (sdp->sd_args.ar_errors == GFS2_ERRORS_PANIC)
115 panic("GFS2: fsid=%s: warning: assertion \"%s\" failed\n"
116 "GFS2: fsid=%s: function = %s, file = %s, line = %u\n",
117 sdp->sd_fsname, assertion,
118 sdp->sd_fsname, function, file, line);
119
120 sdp->sd_last_warning = jiffies;
121
122 return -1;
123}
124
125/**
126 * gfs2_consist_i - Flag a filesystem consistency error and withdraw
127 * Returns: -1 if this call withdrew the machine,
128 * 0 if it was already withdrawn
129 */
130
131int gfs2_consist_i(struct gfs2_sbd *sdp, int cluster_wide, const char *function,
132 char *file, unsigned int line)
133{
134 int rv;
135 rv = gfs2_lm_withdraw(sdp,
136 "GFS2: fsid=%s: fatal: filesystem consistency error\n"
137 "GFS2: fsid=%s: function = %s, file = %s, line = %u\n",
138 sdp->sd_fsname,
139 sdp->sd_fsname, function, file, line);
140 return rv;
141}
142
143/**
144 * gfs2_consist_inode_i - Flag an inode consistency error and withdraw
145 * Returns: -1 if this call withdrew the machine,
146 * 0 if it was already withdrawn
147 */
148
149int gfs2_consist_inode_i(struct gfs2_inode *ip, int cluster_wide,
150 const char *function, char *file, unsigned int line)
151{
152 struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
153 int rv;
154 rv = gfs2_lm_withdraw(sdp,
155 "GFS2: fsid=%s: fatal: filesystem consistency error\n"
156 "GFS2: fsid=%s: inode = %llu %llu\n"
157 "GFS2: fsid=%s: function = %s, file = %s, line = %u\n",
158 sdp->sd_fsname,
159 sdp->sd_fsname, (unsigned long long)ip->i_no_formal_ino,
160 (unsigned long long)ip->i_no_addr,
161 sdp->sd_fsname, function, file, line);
162 return rv;
163}
164
165/**
166 * gfs2_consist_rgrpd_i - Flag a RG consistency error and withdraw
167 * Returns: -1 if this call withdrew the machine,
168 * 0 if it was already withdrawn
169 */
170
171int gfs2_consist_rgrpd_i(struct gfs2_rgrpd *rgd, int cluster_wide,
172 const char *function, char *file, unsigned int line)
173{
174 struct gfs2_sbd *sdp = rgd->rd_sbd;
175 int rv;
176 rv = gfs2_lm_withdraw(sdp,
177 "GFS2: fsid=%s: fatal: filesystem consistency error\n"
178 "GFS2: fsid=%s: RG = %llu\n"
179 "GFS2: fsid=%s: function = %s, file = %s, line = %u\n",
180 sdp->sd_fsname,
181 sdp->sd_fsname, (unsigned long long)rgd->rd_addr,
182 sdp->sd_fsname, function, file, line);
183 return rv;
184}
185
186/**
187 * gfs2_meta_check_ii - Flag a magic number consistency error and withdraw
188 * Returns: -1 if this call withdrew the machine,
189 * -2 if it was already withdrawn
190 */
191
192int gfs2_meta_check_ii(struct gfs2_sbd *sdp, struct buffer_head *bh,
193 const char *type, const char *function, char *file,
194 unsigned int line)
195{
196 int me;
197 me = gfs2_lm_withdraw(sdp,
198 "GFS2: fsid=%s: fatal: invalid metadata block\n"
199 "GFS2: fsid=%s: bh = %llu (%s)\n"
200 "GFS2: fsid=%s: function = %s, file = %s, line = %u\n",
201 sdp->sd_fsname,
202 sdp->sd_fsname, (unsigned long long)bh->b_blocknr, type,
203 sdp->sd_fsname, function, file, line);
204 return (me) ? -1 : -2;
205}
206
207/**
208 * gfs2_metatype_check_ii - Flag a metadata type consistency error and withdraw
209 * Returns: -1 if this call withdrew the machine,
210 * -2 if it was already withdrawn
211 */
212
213int gfs2_metatype_check_ii(struct gfs2_sbd *sdp, struct buffer_head *bh,
214 u16 type, u16 t, const char *function,
215 char *file, unsigned int line)
216{
217 int me;
218 me = gfs2_lm_withdraw(sdp,
219 "GFS2: fsid=%s: fatal: invalid metadata block\n"
220 "GFS2: fsid=%s: bh = %llu (type: exp=%u, found=%u)\n"
221 "GFS2: fsid=%s: function = %s, file = %s, line = %u\n",
222 sdp->sd_fsname,
223 sdp->sd_fsname, (unsigned long long)bh->b_blocknr, type, t,
224 sdp->sd_fsname, function, file, line);
225 return (me) ? -1 : -2;
226}
227
228/**
229 * gfs2_io_error_i - Flag an I/O error and withdraw
230 * Returns: -1 if this call withdrew the machine,
231 * 0 if it was already withdrawn
232 */
233
234int gfs2_io_error_i(struct gfs2_sbd *sdp, const char *function, char *file,
235 unsigned int line)
236{
237 int rv;
238 rv = gfs2_lm_withdraw(sdp,
239 "GFS2: fsid=%s: fatal: I/O error\n"
240 "GFS2: fsid=%s: function = %s, file = %s, line = %u\n",
241 sdp->sd_fsname,
242 sdp->sd_fsname, function, file, line);
243 return rv;
244}
245
246/**
247 * gfs2_io_error_bh_i - Flag a buffer I/O error and withdraw
248 * Returns: -1 if this call withdrew the machine,
249 * 0 if it was already withdrawn
250 */
251
252int gfs2_io_error_bh_i(struct gfs2_sbd *sdp, struct buffer_head *bh,
253 const char *function, char *file, unsigned int line)
254{
255 int rv;
256 rv = gfs2_lm_withdraw(sdp,
257 "GFS2: fsid=%s: fatal: I/O error\n"
258 "GFS2: fsid=%s: block = %llu\n"
259 "GFS2: fsid=%s: function = %s, file = %s, line = %u\n",
260 sdp->sd_fsname,
261 sdp->sd_fsname, (unsigned long long)bh->b_blocknr,
262 sdp->sd_fsname, function, file, line);
263 return rv;
264}
265
266void gfs2_icbit_munge(struct gfs2_sbd *sdp, unsigned char **bitmap,
267 unsigned int bit, int new_value)
268{
269 unsigned int c, o, b = bit;
270 int old_value;
271
272 c = b / (8 * PAGE_SIZE);
273 b %= 8 * PAGE_SIZE;
274 o = b / 8;
275 b %= 8;
276
277 old_value = (bitmap[c][o] & (1 << b));
278 gfs2_assert_withdraw(sdp, !old_value != !new_value);
279
280 if (new_value)
281 bitmap[c][o] |= 1 << b;
282 else
283 bitmap[c][o] &= ~(1 << b);
284}
285
1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
4 * Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved.
5 */
6
7#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
8
9#include <linux/spinlock.h>
10#include <linux/completion.h>
11#include <linux/buffer_head.h>
12#include <linux/crc32.h>
13#include <linux/gfs2_ondisk.h>
14#include <linux/delay.h>
15#include <linux/uaccess.h>
16
17#include "gfs2.h"
18#include "incore.h"
19#include "glock.h"
20#include "glops.h"
21#include "log.h"
22#include "lops.h"
23#include "recovery.h"
24#include "rgrp.h"
25#include "super.h"
26#include "util.h"
27
28struct kmem_cache *gfs2_glock_cachep __read_mostly;
29struct kmem_cache *gfs2_glock_aspace_cachep __read_mostly;
30struct kmem_cache *gfs2_inode_cachep __read_mostly;
31struct kmem_cache *gfs2_bufdata_cachep __read_mostly;
32struct kmem_cache *gfs2_rgrpd_cachep __read_mostly;
33struct kmem_cache *gfs2_quotad_cachep __read_mostly;
34struct kmem_cache *gfs2_qadata_cachep __read_mostly;
35struct kmem_cache *gfs2_trans_cachep __read_mostly;
36mempool_t *gfs2_page_pool __read_mostly;
37
38void gfs2_assert_i(struct gfs2_sbd *sdp)
39{
40 fs_emerg(sdp, "fatal assertion failed\n");
41}
42
43/**
44 * check_journal_clean - Make sure a journal is clean for a spectator mount
45 * @sdp: The GFS2 superblock
46 * @jd: The journal descriptor
47 *
48 * Returns: 0 if the journal is clean or locked, else an error
49 */
50int check_journal_clean(struct gfs2_sbd *sdp, struct gfs2_jdesc *jd,
51 bool verbose)
52{
53 int error;
54 struct gfs2_holder j_gh;
55 struct gfs2_log_header_host head;
56 struct gfs2_inode *ip;
57
58 ip = GFS2_I(jd->jd_inode);
59 error = gfs2_glock_nq_init(ip->i_gl, LM_ST_SHARED, LM_FLAG_NOEXP |
60 GL_EXACT | GL_NOCACHE, &j_gh);
61 if (error) {
62 if (verbose)
63 fs_err(sdp, "Error %d locking journal for spectator "
64 "mount.\n", error);
65 return -EPERM;
66 }
67 error = gfs2_jdesc_check(jd);
68 if (error) {
69 if (verbose)
70 fs_err(sdp, "Error checking journal for spectator "
71 "mount.\n");
72 goto out_unlock;
73 }
74 error = gfs2_find_jhead(jd, &head, false);
75 if (error) {
76 if (verbose)
77 fs_err(sdp, "Error parsing journal for spectator "
78 "mount.\n");
79 goto out_unlock;
80 }
81 if (!(head.lh_flags & GFS2_LOG_HEAD_UNMOUNT)) {
82 error = -EPERM;
83 if (verbose)
84 fs_err(sdp, "jid=%u: Journal is dirty, so the first "
85 "mounter must not be a spectator.\n",
86 jd->jd_jid);
87 }
88
89out_unlock:
90 gfs2_glock_dq_uninit(&j_gh);
91 return error;
92}
93
94static void signal_our_withdraw(struct gfs2_sbd *sdp)
95{
96 struct gfs2_glock *gl = sdp->sd_live_gh.gh_gl;
97 struct inode *inode = sdp->sd_jdesc->jd_inode;
98 struct gfs2_inode *ip = GFS2_I(inode);
99 u64 no_formal_ino = ip->i_no_formal_ino;
100 int ret = 0;
101 int tries;
102
103 if (test_bit(SDF_NORECOVERY, &sdp->sd_flags))
104 return;
105
106 /* Prevent any glock dq until withdraw recovery is complete */
107 set_bit(SDF_WITHDRAW_RECOVERY, &sdp->sd_flags);
108 /*
109 * Don't tell dlm we're bailing until we have no more buffers in the
110 * wind. If journal had an IO error, the log code should just purge
111 * the outstanding buffers rather than submitting new IO. Making the
112 * file system read-only will flush the journal, etc.
113 *
114 * During a normal unmount, gfs2_make_fs_ro calls gfs2_log_shutdown
115 * which clears SDF_JOURNAL_LIVE. In a withdraw, we must not write
116 * any UNMOUNT log header, so we can't call gfs2_log_shutdown, and
117 * therefore we need to clear SDF_JOURNAL_LIVE manually.
118 */
119 clear_bit(SDF_JOURNAL_LIVE, &sdp->sd_flags);
120 if (!sb_rdonly(sdp->sd_vfs))
121 ret = gfs2_make_fs_ro(sdp);
122
123 if (sdp->sd_lockstruct.ls_ops->lm_lock == NULL) { /* lock_nolock */
124 if (!ret)
125 ret = -EIO;
126 clear_bit(SDF_WITHDRAW_RECOVERY, &sdp->sd_flags);
127 goto skip_recovery;
128 }
129 /*
130 * Drop the glock for our journal so another node can recover it.
131 */
132 if (gfs2_holder_initialized(&sdp->sd_journal_gh)) {
133 gfs2_glock_dq_wait(&sdp->sd_journal_gh);
134 gfs2_holder_uninit(&sdp->sd_journal_gh);
135 }
136 sdp->sd_jinode_gh.gh_flags |= GL_NOCACHE;
137 gfs2_glock_dq(&sdp->sd_jinode_gh);
138 if (test_bit(SDF_FS_FROZEN, &sdp->sd_flags)) {
139 /* Make sure gfs2_unfreeze works if partially-frozen */
140 flush_workqueue(gfs2_freeze_wq);
141 atomic_set(&sdp->sd_freeze_state, SFS_FROZEN);
142 thaw_super(sdp->sd_vfs);
143 } else {
144 wait_on_bit(&gl->gl_flags, GLF_DEMOTE, TASK_UNINTERRUPTIBLE);
145 }
146
147 /*
148 * holder_uninit to force glock_put, to force dlm to let go
149 */
150 gfs2_holder_uninit(&sdp->sd_jinode_gh);
151
152 /*
153 * Note: We need to be careful here:
154 * Our iput of jd_inode will evict it. The evict will dequeue its
155 * glock, but the glock dq will wait for the withdraw unless we have
156 * exception code in glock_dq.
157 */
158 iput(inode);
159 /*
160 * Wait until the journal inode's glock is freed. This allows try locks
161 * on other nodes to be successful, otherwise we remain the owner of
162 * the glock as far as dlm is concerned.
163 */
164 if (gl->gl_ops->go_free) {
165 set_bit(GLF_FREEING, &gl->gl_flags);
166 wait_on_bit(&gl->gl_flags, GLF_FREEING, TASK_UNINTERRUPTIBLE);
167 }
168
169 /*
170 * Dequeue the "live" glock, but keep a reference so it's never freed.
171 */
172 gfs2_glock_hold(gl);
173 gfs2_glock_dq_wait(&sdp->sd_live_gh);
174 /*
175 * We enqueue the "live" glock in EX so that all other nodes
176 * get a demote request and act on it. We don't really want the
177 * lock in EX, so we send a "try" lock with 1CB to produce a callback.
178 */
179 fs_warn(sdp, "Requesting recovery of jid %d.\n",
180 sdp->sd_lockstruct.ls_jid);
181 gfs2_holder_reinit(LM_ST_EXCLUSIVE, LM_FLAG_TRY_1CB | LM_FLAG_NOEXP,
182 &sdp->sd_live_gh);
183 msleep(GL_GLOCK_MAX_HOLD);
184 /*
185 * This will likely fail in a cluster, but succeed standalone:
186 */
187 ret = gfs2_glock_nq(&sdp->sd_live_gh);
188
189 /*
190 * If we actually got the "live" lock in EX mode, there are no other
191 * nodes available to replay our journal. So we try to replay it
192 * ourselves. We hold the "live" glock to prevent other mounters
193 * during recovery, then just dequeue it and reacquire it in our
194 * normal SH mode. Just in case the problem that caused us to
195 * withdraw prevents us from recovering our journal (e.g. io errors
196 * and such) we still check if the journal is clean before proceeding
197 * but we may wait forever until another mounter does the recovery.
198 */
199 if (ret == 0) {
200 fs_warn(sdp, "No other mounters found. Trying to recover our "
201 "own journal jid %d.\n", sdp->sd_lockstruct.ls_jid);
202 if (gfs2_recover_journal(sdp->sd_jdesc, 1))
203 fs_warn(sdp, "Unable to recover our journal jid %d.\n",
204 sdp->sd_lockstruct.ls_jid);
205 gfs2_glock_dq_wait(&sdp->sd_live_gh);
206 gfs2_holder_reinit(LM_ST_SHARED, LM_FLAG_NOEXP | GL_EXACT,
207 &sdp->sd_live_gh);
208 gfs2_glock_nq(&sdp->sd_live_gh);
209 }
210
211 gfs2_glock_queue_put(gl); /* drop the extra reference we acquired */
212 clear_bit(SDF_WITHDRAW_RECOVERY, &sdp->sd_flags);
213
214 /*
215 * At this point our journal is evicted, so we need to get a new inode
216 * for it. Once done, we need to call gfs2_find_jhead which
217 * calls gfs2_map_journal_extents to map it for us again.
218 *
219 * Note that we don't really want it to look up a FREE block. The
220 * GFS2_BLKST_FREE simply overrides a block check in gfs2_inode_lookup
221 * which would otherwise fail because it requires grabbing an rgrp
222 * glock, which would fail with -EIO because we're withdrawing.
223 */
224 inode = gfs2_inode_lookup(sdp->sd_vfs, DT_UNKNOWN,
225 sdp->sd_jdesc->jd_no_addr, no_formal_ino,
226 GFS2_BLKST_FREE);
227 if (IS_ERR(inode)) {
228 fs_warn(sdp, "Reprocessing of jid %d failed with %ld.\n",
229 sdp->sd_lockstruct.ls_jid, PTR_ERR(inode));
230 goto skip_recovery;
231 }
232 sdp->sd_jdesc->jd_inode = inode;
233
234 /*
235 * Now wait until recovery is complete.
236 */
237 for (tries = 0; tries < 10; tries++) {
238 ret = check_journal_clean(sdp, sdp->sd_jdesc, false);
239 if (!ret)
240 break;
241 msleep(HZ);
242 fs_warn(sdp, "Waiting for journal recovery jid %d.\n",
243 sdp->sd_lockstruct.ls_jid);
244 }
245skip_recovery:
246 if (!ret)
247 fs_warn(sdp, "Journal recovery complete for jid %d.\n",
248 sdp->sd_lockstruct.ls_jid);
249 else
250 fs_warn(sdp, "Journal recovery skipped for %d until next "
251 "mount.\n", sdp->sd_lockstruct.ls_jid);
252 fs_warn(sdp, "Glock dequeues delayed: %lu\n", sdp->sd_glock_dqs_held);
253 sdp->sd_glock_dqs_held = 0;
254 wake_up_bit(&sdp->sd_flags, SDF_WITHDRAW_RECOVERY);
255}
256
257void gfs2_lm(struct gfs2_sbd *sdp, const char *fmt, ...)
258{
259 struct va_format vaf;
260 va_list args;
261
262 if (sdp->sd_args.ar_errors == GFS2_ERRORS_WITHDRAW &&
263 test_bit(SDF_WITHDRAWN, &sdp->sd_flags))
264 return;
265
266 va_start(args, fmt);
267 vaf.fmt = fmt;
268 vaf.va = &args;
269 fs_err(sdp, "%pV", &vaf);
270 va_end(args);
271}
272
273int gfs2_withdraw(struct gfs2_sbd *sdp)
274{
275 struct lm_lockstruct *ls = &sdp->sd_lockstruct;
276 const struct lm_lockops *lm = ls->ls_ops;
277
278 if (sdp->sd_args.ar_errors == GFS2_ERRORS_WITHDRAW &&
279 test_and_set_bit(SDF_WITHDRAWN, &sdp->sd_flags)) {
280 if (!test_bit(SDF_WITHDRAW_IN_PROG, &sdp->sd_flags))
281 return -1;
282
283 wait_on_bit(&sdp->sd_flags, SDF_WITHDRAW_IN_PROG,
284 TASK_UNINTERRUPTIBLE);
285 return -1;
286 }
287
288 set_bit(SDF_WITHDRAW_IN_PROG, &sdp->sd_flags);
289
290 if (sdp->sd_args.ar_errors == GFS2_ERRORS_WITHDRAW) {
291 fs_err(sdp, "about to withdraw this file system\n");
292 BUG_ON(sdp->sd_args.ar_debug);
293
294 signal_our_withdraw(sdp);
295
296 kobject_uevent(&sdp->sd_kobj, KOBJ_OFFLINE);
297
298 if (!strcmp(sdp->sd_lockstruct.ls_ops->lm_proto_name, "lock_dlm"))
299 wait_for_completion(&sdp->sd_wdack);
300
301 if (lm->lm_unmount) {
302 fs_err(sdp, "telling LM to unmount\n");
303 lm->lm_unmount(sdp);
304 }
305 set_bit(SDF_SKIP_DLM_UNLOCK, &sdp->sd_flags);
306 fs_err(sdp, "File system withdrawn\n");
307 dump_stack();
308 clear_bit(SDF_WITHDRAW_IN_PROG, &sdp->sd_flags);
309 smp_mb__after_atomic();
310 wake_up_bit(&sdp->sd_flags, SDF_WITHDRAW_IN_PROG);
311 }
312
313 if (sdp->sd_args.ar_errors == GFS2_ERRORS_PANIC)
314 panic("GFS2: fsid=%s: panic requested\n", sdp->sd_fsname);
315
316 return -1;
317}
318
319/**
320 * gfs2_assert_withdraw_i - Cause the machine to withdraw if @assertion is false
321 */
322
323void gfs2_assert_withdraw_i(struct gfs2_sbd *sdp, char *assertion,
324 const char *function, char *file, unsigned int line,
325 bool delayed)
326{
327 if (gfs2_withdrawn(sdp))
328 return;
329
330 fs_err(sdp,
331 "fatal: assertion \"%s\" failed\n"
332 " function = %s, file = %s, line = %u\n",
333 assertion, function, file, line);
334
335 /*
336 * If errors=panic was specified on mount, it won't help to delay the
337 * withdraw.
338 */
339 if (sdp->sd_args.ar_errors == GFS2_ERRORS_PANIC)
340 delayed = false;
341
342 if (delayed)
343 gfs2_withdraw_delayed(sdp);
344 else
345 gfs2_withdraw(sdp);
346 dump_stack();
347}
348
349/**
350 * gfs2_assert_warn_i - Print a message to the console if @assertion is false
351 */
352
353void gfs2_assert_warn_i(struct gfs2_sbd *sdp, char *assertion,
354 const char *function, char *file, unsigned int line)
355{
356 if (time_before(jiffies,
357 sdp->sd_last_warning +
358 gfs2_tune_get(sdp, gt_complain_secs) * HZ))
359 return;
360
361 if (sdp->sd_args.ar_errors == GFS2_ERRORS_WITHDRAW)
362 fs_warn(sdp, "warning: assertion \"%s\" failed at function = %s, file = %s, line = %u\n",
363 assertion, function, file, line);
364
365 if (sdp->sd_args.ar_debug)
366 BUG();
367 else
368 dump_stack();
369
370 if (sdp->sd_args.ar_errors == GFS2_ERRORS_PANIC)
371 panic("GFS2: fsid=%s: warning: assertion \"%s\" failed\n"
372 "GFS2: fsid=%s: function = %s, file = %s, line = %u\n",
373 sdp->sd_fsname, assertion,
374 sdp->sd_fsname, function, file, line);
375
376 sdp->sd_last_warning = jiffies;
377}
378
379/**
380 * gfs2_consist_i - Flag a filesystem consistency error and withdraw
381 */
382
383void gfs2_consist_i(struct gfs2_sbd *sdp, const char *function,
384 char *file, unsigned int line)
385{
386 gfs2_lm(sdp,
387 "fatal: filesystem consistency error - function = %s, file = %s, line = %u\n",
388 function, file, line);
389 gfs2_withdraw(sdp);
390}
391
392/**
393 * gfs2_consist_inode_i - Flag an inode consistency error and withdraw
394 */
395
396void gfs2_consist_inode_i(struct gfs2_inode *ip,
397 const char *function, char *file, unsigned int line)
398{
399 struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
400
401 gfs2_lm(sdp,
402 "fatal: filesystem consistency error\n"
403 " inode = %llu %llu\n"
404 " function = %s, file = %s, line = %u\n",
405 (unsigned long long)ip->i_no_formal_ino,
406 (unsigned long long)ip->i_no_addr,
407 function, file, line);
408 gfs2_withdraw(sdp);
409}
410
411/**
412 * gfs2_consist_rgrpd_i - Flag a RG consistency error and withdraw
413 */
414
415void gfs2_consist_rgrpd_i(struct gfs2_rgrpd *rgd,
416 const char *function, char *file, unsigned int line)
417{
418 struct gfs2_sbd *sdp = rgd->rd_sbd;
419 char fs_id_buf[sizeof(sdp->sd_fsname) + 7];
420
421 sprintf(fs_id_buf, "fsid=%s: ", sdp->sd_fsname);
422 gfs2_rgrp_dump(NULL, rgd->rd_gl, fs_id_buf);
423 gfs2_lm(sdp,
424 "fatal: filesystem consistency error\n"
425 " RG = %llu\n"
426 " function = %s, file = %s, line = %u\n",
427 (unsigned long long)rgd->rd_addr,
428 function, file, line);
429 gfs2_withdraw(sdp);
430}
431
432/**
433 * gfs2_meta_check_ii - Flag a magic number consistency error and withdraw
434 * Returns: -1 if this call withdrew the machine,
435 * -2 if it was already withdrawn
436 */
437
438int gfs2_meta_check_ii(struct gfs2_sbd *sdp, struct buffer_head *bh,
439 const char *type, const char *function, char *file,
440 unsigned int line)
441{
442 int me;
443
444 gfs2_lm(sdp,
445 "fatal: invalid metadata block\n"
446 " bh = %llu (%s)\n"
447 " function = %s, file = %s, line = %u\n",
448 (unsigned long long)bh->b_blocknr, type,
449 function, file, line);
450 me = gfs2_withdraw(sdp);
451 return (me) ? -1 : -2;
452}
453
454/**
455 * gfs2_metatype_check_ii - Flag a metadata type consistency error and withdraw
456 * Returns: -1 if this call withdrew the machine,
457 * -2 if it was already withdrawn
458 */
459
460int gfs2_metatype_check_ii(struct gfs2_sbd *sdp, struct buffer_head *bh,
461 u16 type, u16 t, const char *function,
462 char *file, unsigned int line)
463{
464 int me;
465
466 gfs2_lm(sdp,
467 "fatal: invalid metadata block\n"
468 " bh = %llu (type: exp=%u, found=%u)\n"
469 " function = %s, file = %s, line = %u\n",
470 (unsigned long long)bh->b_blocknr, type, t,
471 function, file, line);
472 me = gfs2_withdraw(sdp);
473 return (me) ? -1 : -2;
474}
475
476/**
477 * gfs2_io_error_i - Flag an I/O error and withdraw
478 * Returns: -1 if this call withdrew the machine,
479 * 0 if it was already withdrawn
480 */
481
482int gfs2_io_error_i(struct gfs2_sbd *sdp, const char *function, char *file,
483 unsigned int line)
484{
485 gfs2_lm(sdp,
486 "fatal: I/O error\n"
487 " function = %s, file = %s, line = %u\n",
488 function, file, line);
489 return gfs2_withdraw(sdp);
490}
491
492/**
493 * gfs2_io_error_bh_i - Flag a buffer I/O error
494 * @withdraw: withdraw the filesystem
495 */
496
497void gfs2_io_error_bh_i(struct gfs2_sbd *sdp, struct buffer_head *bh,
498 const char *function, char *file, unsigned int line,
499 bool withdraw)
500{
501 if (gfs2_withdrawn(sdp))
502 return;
503
504 fs_err(sdp, "fatal: I/O error\n"
505 " block = %llu\n"
506 " function = %s, file = %s, line = %u\n",
507 (unsigned long long)bh->b_blocknr, function, file, line);
508 if (withdraw)
509 gfs2_withdraw(sdp);
510}
511