Commit | Line | Data |
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b3b94faa DT |
1 | /* |
2 | * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved. | |
3a8a9a10 | 3 | * Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved. |
b3b94faa DT |
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 | |
e9fc2aa0 | 7 | * of the GNU General Public License version 2. |
b3b94faa DT |
8 | */ |
9 | ||
b3b94faa DT |
10 | #include <linux/slab.h> |
11 | #include <linux/spinlock.h> | |
12 | #include <linux/completion.h> | |
13 | #include <linux/buffer_head.h> | |
14 | #include <linux/crc32.h> | |
5c676f6d | 15 | #include <linux/gfs2_ondisk.h> |
b3b94faa DT |
16 | #include <asm/uaccess.h> |
17 | ||
18 | #include "gfs2.h" | |
5c676f6d | 19 | #include "incore.h" |
b3b94faa | 20 | #include "glock.h" |
5c676f6d | 21 | #include "util.h" |
b3b94faa | 22 | |
e18b890b CL |
23 | struct kmem_cache *gfs2_glock_cachep __read_mostly; |
24 | struct kmem_cache *gfs2_inode_cachep __read_mostly; | |
25 | struct kmem_cache *gfs2_bufdata_cachep __read_mostly; | |
6bdd9be6 | 26 | struct kmem_cache *gfs2_rgrpd_cachep __read_mostly; |
37b2c837 | 27 | struct kmem_cache *gfs2_quotad_cachep __read_mostly; |
b3b94faa | 28 | |
b3b94faa DT |
29 | void 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 | ||
da755fdb SW |
35 | int gfs2_lm_withdraw(struct gfs2_sbd *sdp, char *fmt, ...) |
36 | { | |
f057f6cd SW |
37 | struct lm_lockstruct *ls = &sdp->sd_lockstruct; |
38 | const struct lm_lockops *lm = ls->ls_ops; | |
da755fdb SW |
39 | va_list args; |
40 | ||
41 | if (test_and_set_bit(SDF_SHUTDOWN, &sdp->sd_flags)) | |
42 | return 0; | |
43 | ||
44 | va_start(args, fmt); | |
45 | vprintk(fmt, args); | |
46 | va_end(args); | |
47 | ||
48 | fs_err(sdp, "about to withdraw this file system\n"); | |
49 | BUG_ON(sdp->sd_args.ar_debug); | |
50 | ||
f057f6cd SW |
51 | kobject_uevent(&sdp->sd_kobj, KOBJ_OFFLINE); |
52 | ||
53 | if (lm->lm_unmount) { | |
54 | fs_err(sdp, "telling LM to unmount\n"); | |
55 | lm->lm_unmount(sdp); | |
56 | } | |
da755fdb SW |
57 | fs_err(sdp, "withdrawn\n"); |
58 | dump_stack(); | |
59 | ||
60 | return -1; | |
61 | } | |
62 | ||
b3b94faa DT |
63 | /** |
64 | * gfs2_assert_withdraw_i - Cause the machine to withdraw if @assertion is false | |
65 | * Returns: -1 if this call withdrew the machine, | |
66 | * -2 if it was already withdrawn | |
67 | */ | |
68 | ||
69 | int gfs2_assert_withdraw_i(struct gfs2_sbd *sdp, char *assertion, | |
70 | const char *function, char *file, unsigned int line) | |
71 | { | |
72 | int me; | |
73 | me = gfs2_lm_withdraw(sdp, | |
74 | "GFS2: fsid=%s: fatal: assertion \"%s\" failed\n" | |
75 | "GFS2: fsid=%s: function = %s, file = %s, line = %u\n", | |
76 | sdp->sd_fsname, assertion, | |
77 | sdp->sd_fsname, function, file, line); | |
18ec7d5c | 78 | dump_stack(); |
b3b94faa DT |
79 | return (me) ? -1 : -2; |
80 | } | |
81 | ||
82 | /** | |
83 | * gfs2_assert_warn_i - Print a message to the console if @assertion is false | |
84 | * Returns: -1 if we printed something | |
85 | * -2 if we didn't | |
86 | */ | |
87 | ||
88 | int gfs2_assert_warn_i(struct gfs2_sbd *sdp, char *assertion, | |
89 | const char *function, char *file, unsigned int line) | |
90 | { | |
91 | if (time_before(jiffies, | |
92 | sdp->sd_last_warning + | |
93 | gfs2_tune_get(sdp, gt_complain_secs) * HZ)) | |
94 | return -2; | |
95 | ||
96 | printk(KERN_WARNING | |
97 | "GFS2: fsid=%s: warning: assertion \"%s\" failed\n" | |
98 | "GFS2: fsid=%s: function = %s, file = %s, line = %u\n", | |
99 | sdp->sd_fsname, assertion, | |
100 | sdp->sd_fsname, function, file, line); | |
101 | ||
102 | if (sdp->sd_args.ar_debug) | |
103 | BUG(); | |
18ec7d5c SW |
104 | else |
105 | dump_stack(); | |
b3b94faa DT |
106 | |
107 | sdp->sd_last_warning = jiffies; | |
108 | ||
109 | return -1; | |
110 | } | |
111 | ||
112 | /** | |
113 | * gfs2_consist_i - Flag a filesystem consistency error and withdraw | |
114 | * Returns: -1 if this call withdrew the machine, | |
115 | * 0 if it was already withdrawn | |
116 | */ | |
117 | ||
118 | int gfs2_consist_i(struct gfs2_sbd *sdp, int cluster_wide, const char *function, | |
119 | char *file, unsigned int line) | |
120 | { | |
121 | int rv; | |
122 | rv = gfs2_lm_withdraw(sdp, | |
123 | "GFS2: fsid=%s: fatal: filesystem consistency error\n" | |
124 | "GFS2: fsid=%s: function = %s, file = %s, line = %u\n", | |
125 | sdp->sd_fsname, | |
126 | sdp->sd_fsname, function, file, line); | |
127 | return rv; | |
128 | } | |
129 | ||
130 | /** | |
131 | * gfs2_consist_inode_i - Flag an inode consistency error and withdraw | |
132 | * Returns: -1 if this call withdrew the machine, | |
133 | * 0 if it was already withdrawn | |
134 | */ | |
135 | ||
136 | int gfs2_consist_inode_i(struct gfs2_inode *ip, int cluster_wide, | |
137 | const char *function, char *file, unsigned int line) | |
138 | { | |
feaa7bba | 139 | struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode); |
b3b94faa DT |
140 | int rv; |
141 | rv = gfs2_lm_withdraw(sdp, | |
142 | "GFS2: fsid=%s: fatal: filesystem consistency error\n" | |
143 | "GFS2: fsid=%s: inode = %llu %llu\n" | |
144 | "GFS2: fsid=%s: function = %s, file = %s, line = %u\n", | |
145 | sdp->sd_fsname, | |
dbb7cae2 SW |
146 | sdp->sd_fsname, (unsigned long long)ip->i_no_formal_ino, |
147 | (unsigned long long)ip->i_no_addr, | |
b3b94faa DT |
148 | sdp->sd_fsname, function, file, line); |
149 | return rv; | |
150 | } | |
151 | ||
152 | /** | |
153 | * gfs2_consist_rgrpd_i - Flag a RG consistency error and withdraw | |
154 | * Returns: -1 if this call withdrew the machine, | |
155 | * 0 if it was already withdrawn | |
156 | */ | |
157 | ||
158 | int gfs2_consist_rgrpd_i(struct gfs2_rgrpd *rgd, int cluster_wide, | |
159 | const char *function, char *file, unsigned int line) | |
160 | { | |
161 | struct gfs2_sbd *sdp = rgd->rd_sbd; | |
162 | int rv; | |
163 | rv = gfs2_lm_withdraw(sdp, | |
164 | "GFS2: fsid=%s: fatal: filesystem consistency error\n" | |
165 | "GFS2: fsid=%s: RG = %llu\n" | |
166 | "GFS2: fsid=%s: function = %s, file = %s, line = %u\n", | |
167 | sdp->sd_fsname, | |
bb8d8a6f | 168 | sdp->sd_fsname, (unsigned long long)rgd->rd_addr, |
b3b94faa DT |
169 | sdp->sd_fsname, function, file, line); |
170 | return rv; | |
171 | } | |
172 | ||
173 | /** | |
174 | * gfs2_meta_check_ii - Flag a magic number consistency error and withdraw | |
175 | * Returns: -1 if this call withdrew the machine, | |
176 | * -2 if it was already withdrawn | |
177 | */ | |
178 | ||
179 | int gfs2_meta_check_ii(struct gfs2_sbd *sdp, struct buffer_head *bh, | |
180 | const char *type, const char *function, char *file, | |
181 | unsigned int line) | |
182 | { | |
183 | int me; | |
184 | me = gfs2_lm_withdraw(sdp, | |
185 | "GFS2: fsid=%s: fatal: invalid metadata block\n" | |
186 | "GFS2: fsid=%s: bh = %llu (%s)\n" | |
187 | "GFS2: fsid=%s: function = %s, file = %s, line = %u\n", | |
188 | sdp->sd_fsname, | |
382066da | 189 | sdp->sd_fsname, (unsigned long long)bh->b_blocknr, type, |
b3b94faa DT |
190 | sdp->sd_fsname, function, file, line); |
191 | return (me) ? -1 : -2; | |
192 | } | |
193 | ||
194 | /** | |
195 | * gfs2_metatype_check_ii - Flag a metadata type consistency error and withdraw | |
196 | * Returns: -1 if this call withdrew the machine, | |
197 | * -2 if it was already withdrawn | |
198 | */ | |
199 | ||
200 | int gfs2_metatype_check_ii(struct gfs2_sbd *sdp, struct buffer_head *bh, | |
cd915493 | 201 | u16 type, u16 t, const char *function, |
b3b94faa DT |
202 | char *file, unsigned int line) |
203 | { | |
204 | int me; | |
205 | me = gfs2_lm_withdraw(sdp, | |
206 | "GFS2: fsid=%s: fatal: invalid metadata block\n" | |
207 | "GFS2: fsid=%s: bh = %llu (type: exp=%u, found=%u)\n" | |
208 | "GFS2: fsid=%s: function = %s, file = %s, line = %u\n", | |
209 | sdp->sd_fsname, | |
382066da | 210 | sdp->sd_fsname, (unsigned long long)bh->b_blocknr, type, t, |
b3b94faa DT |
211 | sdp->sd_fsname, function, file, line); |
212 | return (me) ? -1 : -2; | |
213 | } | |
214 | ||
215 | /** | |
216 | * gfs2_io_error_i - Flag an I/O error and withdraw | |
217 | * Returns: -1 if this call withdrew the machine, | |
218 | * 0 if it was already withdrawn | |
219 | */ | |
220 | ||
221 | int gfs2_io_error_i(struct gfs2_sbd *sdp, const char *function, char *file, | |
222 | unsigned int line) | |
223 | { | |
224 | int rv; | |
225 | rv = gfs2_lm_withdraw(sdp, | |
226 | "GFS2: fsid=%s: fatal: I/O error\n" | |
227 | "GFS2: fsid=%s: function = %s, file = %s, line = %u\n", | |
228 | sdp->sd_fsname, | |
229 | sdp->sd_fsname, function, file, line); | |
230 | return rv; | |
231 | } | |
232 | ||
233 | /** | |
234 | * gfs2_io_error_bh_i - Flag a buffer I/O error and withdraw | |
235 | * Returns: -1 if this call withdrew the machine, | |
236 | * 0 if it was already withdrawn | |
237 | */ | |
238 | ||
239 | int gfs2_io_error_bh_i(struct gfs2_sbd *sdp, struct buffer_head *bh, | |
240 | const char *function, char *file, unsigned int line) | |
241 | { | |
242 | int rv; | |
243 | rv = gfs2_lm_withdraw(sdp, | |
244 | "GFS2: fsid=%s: fatal: I/O error\n" | |
245 | "GFS2: fsid=%s: block = %llu\n" | |
246 | "GFS2: fsid=%s: function = %s, file = %s, line = %u\n", | |
247 | sdp->sd_fsname, | |
382066da | 248 | sdp->sd_fsname, (unsigned long long)bh->b_blocknr, |
b3b94faa DT |
249 | sdp->sd_fsname, function, file, line); |
250 | return rv; | |
251 | } | |
252 | ||
b3b94faa DT |
253 | void gfs2_icbit_munge(struct gfs2_sbd *sdp, unsigned char **bitmap, |
254 | unsigned int bit, int new_value) | |
255 | { | |
256 | unsigned int c, o, b = bit; | |
257 | int old_value; | |
258 | ||
259 | c = b / (8 * PAGE_SIZE); | |
260 | b %= 8 * PAGE_SIZE; | |
261 | o = b / 8; | |
262 | b %= 8; | |
263 | ||
264 | old_value = (bitmap[c][o] & (1 << b)); | |
265 | gfs2_assert_withdraw(sdp, !old_value != !new_value); | |
266 | ||
267 | if (new_value) | |
268 | bitmap[c][o] |= 1 << b; | |
269 | else | |
270 | bitmap[c][o] &= ~(1 << b); | |
271 | } | |
272 |