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diff --git a/fs/gfs2/util.c b/fs/gfs2/util.c
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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 v.2.
8 */
9
10#include <linux/sched.h>
11#include <linux/slab.h>
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 "lm_interface.h"
21#include "incore.h"
22#include "glock.h"
23#include "lm.h"
24#include "util.h"
25
26kmem_cache_t *gfs2_glock_cachep __read_mostly;
27kmem_cache_t *gfs2_inode_cachep __read_mostly;
28kmem_cache_t *gfs2_bufdata_cachep __read_mostly;
29
30void gfs2_assert_i(struct gfs2_sbd *sdp)
31{
32 printk(KERN_EMERG "GFS2: fsid=%s: fatal assertion failed\n",
33 sdp->sd_fsname);
34}
35
36/**
37 * gfs2_assert_withdraw_i - Cause the machine to withdraw if @assertion is false
38 * Returns: -1 if this call withdrew the machine,
39 * -2 if it was already withdrawn
40 */
41
42int gfs2_assert_withdraw_i(struct gfs2_sbd *sdp, char *assertion,
43 const char *function, char *file, unsigned int line)
44{
45 int me;
46 me = gfs2_lm_withdraw(sdp,
47 "GFS2: fsid=%s: fatal: assertion \"%s\" failed\n"
48 "GFS2: fsid=%s: function = %s, file = %s, line = %u\n",
49 sdp->sd_fsname, assertion,
50 sdp->sd_fsname, function, file, line);
51 dump_stack();
52 return (me) ? -1 : -2;
53}
54
55/**
56 * gfs2_assert_warn_i - Print a message to the console if @assertion is false
57 * Returns: -1 if we printed something
58 * -2 if we didn't
59 */
60
61int gfs2_assert_warn_i(struct gfs2_sbd *sdp, char *assertion,
62 const char *function, char *file, unsigned int line)
63{
64 if (time_before(jiffies,
65 sdp->sd_last_warning +
66 gfs2_tune_get(sdp, gt_complain_secs) * HZ))
67 return -2;
68
69 printk(KERN_WARNING
70 "GFS2: fsid=%s: warning: assertion \"%s\" failed\n"
71 "GFS2: fsid=%s: function = %s, file = %s, line = %u\n",
72 sdp->sd_fsname, assertion,
73 sdp->sd_fsname, function, file, line);
74
75 if (sdp->sd_args.ar_debug)
76 BUG();
77 else
78 dump_stack();
79
80 sdp->sd_last_warning = jiffies;
81
82 return -1;
83}
84
85/**
86 * gfs2_consist_i - Flag a filesystem consistency error and withdraw
87 * Returns: -1 if this call withdrew the machine,
88 * 0 if it was already withdrawn
89 */
90
91int gfs2_consist_i(struct gfs2_sbd *sdp, int cluster_wide, const char *function,
92 char *file, unsigned int line)
93{
94 int rv;
95 rv = gfs2_lm_withdraw(sdp,
96 "GFS2: fsid=%s: fatal: filesystem consistency error\n"
97 "GFS2: fsid=%s: function = %s, file = %s, line = %u\n",
98 sdp->sd_fsname,
99 sdp->sd_fsname, function, file, line);
100 return rv;
101}
102
103/**
104 * gfs2_consist_inode_i - Flag an inode consistency error and withdraw
105 * Returns: -1 if this call withdrew the machine,
106 * 0 if it was already withdrawn
107 */
108
109int gfs2_consist_inode_i(struct gfs2_inode *ip, int cluster_wide,
110 const char *function, char *file, unsigned int line)
111{
112 struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
113 int rv;
114 rv = gfs2_lm_withdraw(sdp,
115 "GFS2: fsid=%s: fatal: filesystem consistency error\n"
116 "GFS2: fsid=%s: inode = %llu %llu\n"
117 "GFS2: fsid=%s: function = %s, file = %s, line = %u\n",
118 sdp->sd_fsname,
119 sdp->sd_fsname, (unsigned long long)ip->i_num.no_formal_ino,
120 (unsigned long long)ip->i_num.no_addr,
121 sdp->sd_fsname, function, file, line);
122 return rv;
123}
124
125/**
126 * gfs2_consist_rgrpd_i - Flag a RG 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_rgrpd_i(struct gfs2_rgrpd *rgd, int cluster_wide,
132 const char *function, char *file, unsigned int line)
133{
134 struct gfs2_sbd *sdp = rgd->rd_sbd;
135 int rv;
136 rv = gfs2_lm_withdraw(sdp,
137 "GFS2: fsid=%s: fatal: filesystem consistency error\n"
138 "GFS2: fsid=%s: RG = %llu\n"
139 "GFS2: fsid=%s: function = %s, file = %s, line = %u\n",
140 sdp->sd_fsname,
141 sdp->sd_fsname, (unsigned long long)rgd->rd_ri.ri_addr,
142 sdp->sd_fsname, function, file, line);
143 return rv;
144}
145
146/**
147 * gfs2_meta_check_ii - Flag a magic number consistency error and withdraw
148 * Returns: -1 if this call withdrew the machine,
149 * -2 if it was already withdrawn
150 */
151
152int gfs2_meta_check_ii(struct gfs2_sbd *sdp, struct buffer_head *bh,
153 const char *type, const char *function, char *file,
154 unsigned int line)
155{
156 int me;
157 me = gfs2_lm_withdraw(sdp,
158 "GFS2: fsid=%s: fatal: invalid metadata block\n"
159 "GFS2: fsid=%s: bh = %llu (%s)\n"
160 "GFS2: fsid=%s: function = %s, file = %s, line = %u\n",
161 sdp->sd_fsname,
162 sdp->sd_fsname, (unsigned long long)bh->b_blocknr, type,
163 sdp->sd_fsname, function, file, line);
164 return (me) ? -1 : -2;
165}
166
167/**
168 * gfs2_metatype_check_ii - Flag a metadata type consistency error and withdraw
169 * Returns: -1 if this call withdrew the machine,
170 * -2 if it was already withdrawn
171 */
172
173int gfs2_metatype_check_ii(struct gfs2_sbd *sdp, struct buffer_head *bh,
174 uint16_t type, uint16_t t, const char *function,
175 char *file, unsigned int line)
176{
177 int me;
178 me = gfs2_lm_withdraw(sdp,
179 "GFS2: fsid=%s: fatal: invalid metadata block\n"
180 "GFS2: fsid=%s: bh = %llu (type: exp=%u, found=%u)\n"
181 "GFS2: fsid=%s: function = %s, file = %s, line = %u\n",
182 sdp->sd_fsname,
183 sdp->sd_fsname, (unsigned long long)bh->b_blocknr, type, t,
184 sdp->sd_fsname, function, file, line);
185 return (me) ? -1 : -2;
186}
187
188/**
189 * gfs2_io_error_i - Flag an I/O error and withdraw
190 * Returns: -1 if this call withdrew the machine,
191 * 0 if it was already withdrawn
192 */
193
194int gfs2_io_error_i(struct gfs2_sbd *sdp, const char *function, char *file,
195 unsigned int line)
196{
197 int rv;
198 rv = gfs2_lm_withdraw(sdp,
199 "GFS2: fsid=%s: fatal: I/O error\n"
200 "GFS2: fsid=%s: function = %s, file = %s, line = %u\n",
201 sdp->sd_fsname,
202 sdp->sd_fsname, function, file, line);
203 return rv;
204}
205
206/**
207 * gfs2_io_error_bh_i - Flag a buffer I/O error and withdraw
208 * Returns: -1 if this call withdrew the machine,
209 * 0 if it was already withdrawn
210 */
211
212int gfs2_io_error_bh_i(struct gfs2_sbd *sdp, struct buffer_head *bh,
213 const char *function, char *file, unsigned int line)
214{
215 int rv;
216 rv = gfs2_lm_withdraw(sdp,
217 "GFS2: fsid=%s: fatal: I/O error\n"
218 "GFS2: fsid=%s: block = %llu\n"
219 "GFS2: fsid=%s: function = %s, file = %s, line = %u\n",
220 sdp->sd_fsname,
221 sdp->sd_fsname, (unsigned long long)bh->b_blocknr,
222 sdp->sd_fsname, function, file, line);
223 return rv;
224}
225
226void gfs2_icbit_munge(struct gfs2_sbd *sdp, unsigned char **bitmap,
227 unsigned int bit, int new_value)
228{
229 unsigned int c, o, b = bit;
230 int old_value;
231
232 c = b / (8 * PAGE_SIZE);
233 b %= 8 * PAGE_SIZE;
234 o = b / 8;
235 b %= 8;
236
237 old_value = (bitmap[c][o] & (1 << b));
238 gfs2_assert_withdraw(sdp, !old_value != !new_value);
239
240 if (new_value)
241 bitmap[c][o] |= 1 << b;
242 else
243 bitmap[c][o] &= ~(1 << b);
244}
245
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