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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59 fs_err(sdp, "withdrawn\n");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72 * -2 if it was already withdrawn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/*
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;
28struct kmem_cache *gfs2_rsrv_cachep __read_mostly;
29mempool_t *gfs2_page_pool __read_mostly;
30
31void gfs2_assert_i(struct gfs2_sbd *sdp)
32{
33 printk(KERN_EMERG "GFS2: fsid=%s: fatal assertion failed\n",
34 sdp->sd_fsname);
35}
36
37int gfs2_lm_withdraw(struct gfs2_sbd *sdp, char *fmt, ...)
38{
39 struct lm_lockstruct *ls = &sdp->sd_lockstruct;
40 const struct lm_lockops *lm = ls->ls_ops;
41 va_list args;
42
43 if (sdp->sd_args.ar_errors == GFS2_ERRORS_WITHDRAW &&
44 test_and_set_bit(SDF_SHUTDOWN, &sdp->sd_flags))
45 return 0;
46
47 va_start(args, fmt);
48 vprintk(fmt, args);
49 va_end(args);
50
51 if (sdp->sd_args.ar_errors == GFS2_ERRORS_WITHDRAW) {
52 fs_err(sdp, "about to withdraw this file system\n");
53 BUG_ON(sdp->sd_args.ar_debug);
54
55 kobject_uevent(&sdp->sd_kobj, KOBJ_OFFLINE);
56
57 if (lm->lm_unmount) {
58 fs_err(sdp, "telling LM to unmount\n");
59 lm->lm_unmount(sdp);
60 }
61 fs_err(sdp, "withdrawn\n");
62 dump_stack();
63 }
64
65 if (sdp->sd_args.ar_errors == GFS2_ERRORS_PANIC)
66 panic("GFS2: fsid=%s: panic requested.\n", sdp->sd_fsname);
67
68 return -1;
69}
70
71/**
72 * gfs2_assert_withdraw_i - Cause the machine to withdraw if @assertion is false
73 * Returns: -1 if this call withdrew the machine,
74 * -2 if it was already withdrawn
75 */
76
77int gfs2_assert_withdraw_i(struct gfs2_sbd *sdp, char *assertion,
78 const char *function, char *file, unsigned int line)
79{
80 int me;
81 me = gfs2_lm_withdraw(sdp,
82 "GFS2: fsid=%s: fatal: assertion \"%s\" failed\n"
83 "GFS2: fsid=%s: function = %s, file = %s, line = %u\n",
84 sdp->sd_fsname, assertion,
85 sdp->sd_fsname, function, file, line);
86 dump_stack();
87 return (me) ? -1 : -2;
88}
89
90/**
91 * gfs2_assert_warn_i - Print a message to the console if @assertion is false
92 * Returns: -1 if we printed something
93 * -2 if we didn't
94 */
95
96int gfs2_assert_warn_i(struct gfs2_sbd *sdp, char *assertion,
97 const char *function, char *file, unsigned int line)
98{
99 if (time_before(jiffies,
100 sdp->sd_last_warning +
101 gfs2_tune_get(sdp, gt_complain_secs) * HZ))
102 return -2;
103
104 if (sdp->sd_args.ar_errors == GFS2_ERRORS_WITHDRAW)
105 printk(KERN_WARNING
106 "GFS2: fsid=%s: warning: assertion \"%s\" failed\n"
107 "GFS2: fsid=%s: function = %s, file = %s, line = %u\n",
108 sdp->sd_fsname, assertion,
109 sdp->sd_fsname, function, file, line);
110
111 if (sdp->sd_args.ar_debug)
112 BUG();
113 else
114 dump_stack();
115
116 if (sdp->sd_args.ar_errors == GFS2_ERRORS_PANIC)
117 panic("GFS2: fsid=%s: warning: assertion \"%s\" failed\n"
118 "GFS2: fsid=%s: function = %s, file = %s, line = %u\n",
119 sdp->sd_fsname, assertion,
120 sdp->sd_fsname, function, file, line);
121
122 sdp->sd_last_warning = jiffies;
123
124 return -1;
125}
126
127/**
128 * gfs2_consist_i - Flag a filesystem consistency error and withdraw
129 * Returns: -1 if this call withdrew the machine,
130 * 0 if it was already withdrawn
131 */
132
133int gfs2_consist_i(struct gfs2_sbd *sdp, int cluster_wide, const char *function,
134 char *file, unsigned int line)
135{
136 int rv;
137 rv = gfs2_lm_withdraw(sdp,
138 "GFS2: fsid=%s: fatal: filesystem consistency error\n"
139 "GFS2: fsid=%s: function = %s, file = %s, line = %u\n",
140 sdp->sd_fsname,
141 sdp->sd_fsname, function, file, line);
142 return rv;
143}
144
145/**
146 * gfs2_consist_inode_i - Flag an inode consistency error and withdraw
147 * Returns: -1 if this call withdrew the machine,
148 * 0 if it was already withdrawn
149 */
150
151int gfs2_consist_inode_i(struct gfs2_inode *ip, int cluster_wide,
152 const char *function, char *file, unsigned int line)
153{
154 struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
155 int rv;
156 rv = gfs2_lm_withdraw(sdp,
157 "GFS2: fsid=%s: fatal: filesystem consistency error\n"
158 "GFS2: fsid=%s: inode = %llu %llu\n"
159 "GFS2: fsid=%s: function = %s, file = %s, line = %u\n",
160 sdp->sd_fsname,
161 sdp->sd_fsname, (unsigned long long)ip->i_no_formal_ino,
162 (unsigned long long)ip->i_no_addr,
163 sdp->sd_fsname, function, file, line);
164 return rv;
165}
166
167/**
168 * gfs2_consist_rgrpd_i - Flag a RG consistency error and withdraw
169 * Returns: -1 if this call withdrew the machine,
170 * 0 if it was already withdrawn
171 */
172
173int gfs2_consist_rgrpd_i(struct gfs2_rgrpd *rgd, int cluster_wide,
174 const char *function, char *file, unsigned int line)
175{
176 struct gfs2_sbd *sdp = rgd->rd_sbd;
177 int rv;
178 rv = gfs2_lm_withdraw(sdp,
179 "GFS2: fsid=%s: fatal: filesystem consistency error\n"
180 "GFS2: fsid=%s: RG = %llu\n"
181 "GFS2: fsid=%s: function = %s, file = %s, line = %u\n",
182 sdp->sd_fsname,
183 sdp->sd_fsname, (unsigned long long)rgd->rd_addr,
184 sdp->sd_fsname, function, file, line);
185 return rv;
186}
187
188/**
189 * gfs2_meta_check_ii - Flag a magic number consistency error and withdraw
190 * Returns: -1 if this call withdrew the machine,
191 * -2 if it was already withdrawn
192 */
193
194int gfs2_meta_check_ii(struct gfs2_sbd *sdp, struct buffer_head *bh,
195 const char *type, const char *function, char *file,
196 unsigned int line)
197{
198 int me;
199 me = gfs2_lm_withdraw(sdp,
200 "GFS2: fsid=%s: fatal: invalid metadata block\n"
201 "GFS2: fsid=%s: bh = %llu (%s)\n"
202 "GFS2: fsid=%s: function = %s, file = %s, line = %u\n",
203 sdp->sd_fsname,
204 sdp->sd_fsname, (unsigned long long)bh->b_blocknr, type,
205 sdp->sd_fsname, function, file, line);
206 return (me) ? -1 : -2;
207}
208
209/**
210 * gfs2_metatype_check_ii - Flag a metadata type consistency error and withdraw
211 * Returns: -1 if this call withdrew the machine,
212 * -2 if it was already withdrawn
213 */
214
215int gfs2_metatype_check_ii(struct gfs2_sbd *sdp, struct buffer_head *bh,
216 u16 type, u16 t, const char *function,
217 char *file, unsigned int line)
218{
219 int me;
220 me = gfs2_lm_withdraw(sdp,
221 "GFS2: fsid=%s: fatal: invalid metadata block\n"
222 "GFS2: fsid=%s: bh = %llu (type: exp=%u, found=%u)\n"
223 "GFS2: fsid=%s: function = %s, file = %s, line = %u\n",
224 sdp->sd_fsname,
225 sdp->sd_fsname, (unsigned long long)bh->b_blocknr, type, t,
226 sdp->sd_fsname, function, file, line);
227 return (me) ? -1 : -2;
228}
229
230/**
231 * gfs2_io_error_i - Flag an I/O error and withdraw
232 * Returns: -1 if this call withdrew the machine,
233 * 0 if it was already withdrawn
234 */
235
236int gfs2_io_error_i(struct gfs2_sbd *sdp, const char *function, char *file,
237 unsigned int line)
238{
239 int rv;
240 rv = gfs2_lm_withdraw(sdp,
241 "GFS2: fsid=%s: fatal: I/O error\n"
242 "GFS2: fsid=%s: function = %s, file = %s, line = %u\n",
243 sdp->sd_fsname,
244 sdp->sd_fsname, function, file, line);
245 return rv;
246}
247
248/**
249 * gfs2_io_error_bh_i - Flag a buffer I/O error and withdraw
250 * Returns: -1 if this call withdrew the machine,
251 * 0 if it was already withdrawn
252 */
253
254int gfs2_io_error_bh_i(struct gfs2_sbd *sdp, struct buffer_head *bh,
255 const char *function, char *file, unsigned int line)
256{
257 int rv;
258 rv = gfs2_lm_withdraw(sdp,
259 "GFS2: fsid=%s: fatal: I/O error\n"
260 "GFS2: fsid=%s: block = %llu\n"
261 "GFS2: fsid=%s: function = %s, file = %s, line = %u\n",
262 sdp->sd_fsname,
263 sdp->sd_fsname, (unsigned long long)bh->b_blocknr,
264 sdp->sd_fsname, function, file, line);
265 return rv;
266}
267
268void gfs2_icbit_munge(struct gfs2_sbd *sdp, unsigned char **bitmap,
269 unsigned int bit, int new_value)
270{
271 unsigned int c, o, b = bit;
272 int old_value;
273
274 c = b / (8 * PAGE_SIZE);
275 b %= 8 * PAGE_SIZE;
276 o = b / 8;
277 b %= 8;
278
279 old_value = (bitmap[c][o] & (1 << b));
280 gfs2_assert_withdraw(sdp, !old_value != !new_value);
281
282 if (new_value)
283 bitmap[c][o] |= 1 << b;
284 else
285 bitmap[c][o] &= ~(1 << b);
286}
287