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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#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
11
12#include <linux/spinlock.h>
13#include <linux/completion.h>
14#include <linux/buffer_head.h>
15#include <linux/crc32.h>
16#include <linux/gfs2_ondisk.h>
17#include <asm/uaccess.h>
18
19#include "gfs2.h"
20#include "incore.h"
21#include "glock.h"
22#include "util.h"
23
24struct kmem_cache *gfs2_glock_cachep __read_mostly;
25struct kmem_cache *gfs2_glock_aspace_cachep __read_mostly;
26struct kmem_cache *gfs2_inode_cachep __read_mostly;
27struct kmem_cache *gfs2_bufdata_cachep __read_mostly;
28struct kmem_cache *gfs2_rgrpd_cachep __read_mostly;
29struct kmem_cache *gfs2_quotad_cachep __read_mostly;
30struct kmem_cache *gfs2_qadata_cachep __read_mostly;
31mempool_t *gfs2_page_pool __read_mostly;
32
33void gfs2_assert_i(struct gfs2_sbd *sdp)
34{
35 fs_emerg(sdp, "fatal assertion failed\n");
36}
37
38int gfs2_lm_withdraw(struct gfs2_sbd *sdp, const char *fmt, ...)
39{
40 struct lm_lockstruct *ls = &sdp->sd_lockstruct;
41 const struct lm_lockops *lm = ls->ls_ops;
42 va_list args;
43 struct va_format vaf;
44
45 if (sdp->sd_args.ar_errors == GFS2_ERRORS_WITHDRAW &&
46 test_and_set_bit(SDF_SHUTDOWN, &sdp->sd_flags))
47 return 0;
48
49 va_start(args, fmt);
50
51 vaf.fmt = fmt;
52 vaf.va = &args;
53
54 fs_err(sdp, "%pV", &vaf);
55
56 va_end(args);
57
58 if (sdp->sd_args.ar_errors == GFS2_ERRORS_WITHDRAW) {
59 fs_err(sdp, "about to withdraw this file system\n");
60 BUG_ON(sdp->sd_args.ar_debug);
61
62 kobject_uevent(&sdp->sd_kobj, KOBJ_OFFLINE);
63
64 if (!strcmp(sdp->sd_lockstruct.ls_ops->lm_proto_name, "lock_dlm"))
65 wait_for_completion(&sdp->sd_wdack);
66
67 if (lm->lm_unmount) {
68 fs_err(sdp, "telling LM to unmount\n");
69 lm->lm_unmount(sdp);
70 }
71 fs_err(sdp, "withdrawn\n");
72 dump_stack();
73 }
74
75 if (sdp->sd_args.ar_errors == GFS2_ERRORS_PANIC)
76 panic("GFS2: fsid=%s: panic requested\n", sdp->sd_fsname);
77
78 return -1;
79}
80
81/**
82 * gfs2_assert_withdraw_i - Cause the machine to withdraw if @assertion is false
83 * Returns: -1 if this call withdrew the machine,
84 * -2 if it was already withdrawn
85 */
86
87int gfs2_assert_withdraw_i(struct gfs2_sbd *sdp, char *assertion,
88 const char *function, char *file, unsigned int line)
89{
90 int me;
91 me = gfs2_lm_withdraw(sdp,
92 "fatal: assertion \"%s\" failed\n"
93 " function = %s, file = %s, line = %u\n",
94 assertion, function, file, line);
95 dump_stack();
96 return (me) ? -1 : -2;
97}
98
99/**
100 * gfs2_assert_warn_i - Print a message to the console if @assertion is false
101 * Returns: -1 if we printed something
102 * -2 if we didn't
103 */
104
105int gfs2_assert_warn_i(struct gfs2_sbd *sdp, char *assertion,
106 const char *function, char *file, unsigned int line)
107{
108 if (time_before(jiffies,
109 sdp->sd_last_warning +
110 gfs2_tune_get(sdp, gt_complain_secs) * HZ))
111 return -2;
112
113 if (sdp->sd_args.ar_errors == GFS2_ERRORS_WITHDRAW)
114 fs_warn(sdp, "warning: assertion \"%s\" failed at function = %s, file = %s, line = %u\n",
115 assertion, function, file, line);
116
117 if (sdp->sd_args.ar_debug)
118 BUG();
119 else
120 dump_stack();
121
122 if (sdp->sd_args.ar_errors == GFS2_ERRORS_PANIC)
123 panic("GFS2: fsid=%s: warning: assertion \"%s\" failed\n"
124 "GFS2: fsid=%s: function = %s, file = %s, line = %u\n",
125 sdp->sd_fsname, assertion,
126 sdp->sd_fsname, function, file, line);
127
128 sdp->sd_last_warning = jiffies;
129
130 return -1;
131}
132
133/**
134 * gfs2_consist_i - Flag a filesystem consistency error and withdraw
135 * Returns: -1 if this call withdrew the machine,
136 * 0 if it was already withdrawn
137 */
138
139int gfs2_consist_i(struct gfs2_sbd *sdp, int cluster_wide, const char *function,
140 char *file, unsigned int line)
141{
142 int rv;
143 rv = gfs2_lm_withdraw(sdp,
144 "fatal: filesystem consistency error - function = %s, file = %s, line = %u\n",
145 function, file, line);
146 return rv;
147}
148
149/**
150 * gfs2_consist_inode_i - Flag an inode consistency error and withdraw
151 * Returns: -1 if this call withdrew the machine,
152 * 0 if it was already withdrawn
153 */
154
155int gfs2_consist_inode_i(struct gfs2_inode *ip, int cluster_wide,
156 const char *function, char *file, unsigned int line)
157{
158 struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
159 int rv;
160 rv = gfs2_lm_withdraw(sdp,
161 "fatal: filesystem consistency error\n"
162 " inode = %llu %llu\n"
163 " function = %s, file = %s, line = %u\n",
164 (unsigned long long)ip->i_no_formal_ino,
165 (unsigned long long)ip->i_no_addr,
166 function, file, line);
167 return rv;
168}
169
170/**
171 * gfs2_consist_rgrpd_i - Flag a RG consistency error and withdraw
172 * Returns: -1 if this call withdrew the machine,
173 * 0 if it was already withdrawn
174 */
175
176int gfs2_consist_rgrpd_i(struct gfs2_rgrpd *rgd, int cluster_wide,
177 const char *function, char *file, unsigned int line)
178{
179 struct gfs2_sbd *sdp = rgd->rd_sbd;
180 int rv;
181 rv = gfs2_lm_withdraw(sdp,
182 "fatal: filesystem consistency error\n"
183 " RG = %llu\n"
184 " function = %s, file = %s, line = %u\n",
185 (unsigned long long)rgd->rd_addr,
186 function, file, line);
187 return rv;
188}
189
190/**
191 * gfs2_meta_check_ii - Flag a magic number consistency error and withdraw
192 * Returns: -1 if this call withdrew the machine,
193 * -2 if it was already withdrawn
194 */
195
196int gfs2_meta_check_ii(struct gfs2_sbd *sdp, struct buffer_head *bh,
197 const char *type, const char *function, char *file,
198 unsigned int line)
199{
200 int me;
201 me = gfs2_lm_withdraw(sdp,
202 "fatal: invalid metadata block\n"
203 " bh = %llu (%s)\n"
204 " function = %s, file = %s, line = %u\n",
205 (unsigned long long)bh->b_blocknr, type,
206 function, file, line);
207 return (me) ? -1 : -2;
208}
209
210/**
211 * gfs2_metatype_check_ii - Flag a metadata type consistency error and withdraw
212 * Returns: -1 if this call withdrew the machine,
213 * -2 if it was already withdrawn
214 */
215
216int gfs2_metatype_check_ii(struct gfs2_sbd *sdp, struct buffer_head *bh,
217 u16 type, u16 t, const char *function,
218 char *file, unsigned int line)
219{
220 int me;
221 me = gfs2_lm_withdraw(sdp,
222 "fatal: invalid metadata block\n"
223 " bh = %llu (type: exp=%u, found=%u)\n"
224 " function = %s, file = %s, line = %u\n",
225 (unsigned long long)bh->b_blocknr, type, t,
226 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 "fatal: I/O error\n"
242 " function = %s, file = %s, line = %u\n",
243 function, file, line);
244 return rv;
245}
246
247/**
248 * gfs2_io_error_bh_i - Flag a buffer I/O error and withdraw
249 * Returns: -1 if this call withdrew the machine,
250 * 0 if it was already withdrawn
251 */
252
253int gfs2_io_error_bh_i(struct gfs2_sbd *sdp, struct buffer_head *bh,
254 const char *function, char *file, unsigned int line)
255{
256 int rv;
257 rv = gfs2_lm_withdraw(sdp,
258 "fatal: I/O error\n"
259 " block = %llu\n"
260 " function = %s, file = %s, line = %u\n",
261 (unsigned long long)bh->b_blocknr,
262 function, file, line);
263 return rv;
264}
265
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