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 | 23 | struct kmem_cache *gfs2_glock_cachep __read_mostly; |
009d8518 | 24 | struct kmem_cache *gfs2_glock_aspace_cachep __read_mostly; |
e18b890b CL |
25 | struct kmem_cache *gfs2_inode_cachep __read_mostly; |
26 | struct kmem_cache *gfs2_bufdata_cachep __read_mostly; | |
6bdd9be6 | 27 | struct kmem_cache *gfs2_rgrpd_cachep __read_mostly; |
37b2c837 | 28 | struct kmem_cache *gfs2_quotad_cachep __read_mostly; |
b3b94faa | 29 | |
b3b94faa DT |
30 | void 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 | ||
da755fdb SW |
36 | int gfs2_lm_withdraw(struct gfs2_sbd *sdp, char *fmt, ...) |
37 | { | |
f057f6cd SW |
38 | struct lm_lockstruct *ls = &sdp->sd_lockstruct; |
39 | const struct lm_lockops *lm = ls->ls_ops; | |
da755fdb SW |
40 | va_list args; |
41 | ||
d34843d0 BP |
42 | if (sdp->sd_args.ar_errors == GFS2_ERRORS_WITHDRAW && |
43 | test_and_set_bit(SDF_SHUTDOWN, &sdp->sd_flags)) | |
da755fdb SW |
44 | return 0; |
45 | ||
46 | va_start(args, fmt); | |
47 | vprintk(fmt, args); | |
48 | va_end(args); | |
49 | ||
d34843d0 BP |
50 | if (sdp->sd_args.ar_errors == GFS2_ERRORS_WITHDRAW) { |
51 | fs_err(sdp, "about to withdraw this file system\n"); | |
52 | BUG_ON(sdp->sd_args.ar_debug); | |
da755fdb | 53 | |
d34843d0 | 54 | kobject_uevent(&sdp->sd_kobj, KOBJ_OFFLINE); |
f057f6cd | 55 | |
d34843d0 BP |
56 | if (lm->lm_unmount) { |
57 | fs_err(sdp, "telling LM to unmount\n"); | |
58 | lm->lm_unmount(sdp); | |
59 | } | |
60 | fs_err(sdp, "withdrawn\n"); | |
61 | dump_stack(); | |
f057f6cd | 62 | } |
d34843d0 BP |
63 | |
64 | if (sdp->sd_args.ar_errors == GFS2_ERRORS_PANIC) | |
65 | panic("GFS2: fsid=%s: panic requested.\n", sdp->sd_fsname); | |
da755fdb SW |
66 | |
67 | return -1; | |
68 | } | |
69 | ||
b3b94faa DT |
70 | /** |
71 | * gfs2_assert_withdraw_i - Cause the machine to withdraw if @assertion is false | |
72 | * Returns: -1 if this call withdrew the machine, | |
73 | * -2 if it was already withdrawn | |
74 | */ | |
75 | ||
76 | int gfs2_assert_withdraw_i(struct gfs2_sbd *sdp, char *assertion, | |
77 | const char *function, char *file, unsigned int line) | |
78 | { | |
79 | int me; | |
80 | me = gfs2_lm_withdraw(sdp, | |
81 | "GFS2: fsid=%s: fatal: assertion \"%s\" failed\n" | |
82 | "GFS2: fsid=%s: function = %s, file = %s, line = %u\n", | |
83 | sdp->sd_fsname, assertion, | |
84 | sdp->sd_fsname, function, file, line); | |
18ec7d5c | 85 | dump_stack(); |
b3b94faa DT |
86 | return (me) ? -1 : -2; |
87 | } | |
88 | ||
89 | /** | |
90 | * gfs2_assert_warn_i - Print a message to the console if @assertion is false | |
91 | * Returns: -1 if we printed something | |
92 | * -2 if we didn't | |
93 | */ | |
94 | ||
95 | int gfs2_assert_warn_i(struct gfs2_sbd *sdp, char *assertion, | |
96 | const char *function, char *file, unsigned int line) | |
97 | { | |
98 | if (time_before(jiffies, | |
99 | sdp->sd_last_warning + | |
100 | gfs2_tune_get(sdp, gt_complain_secs) * HZ)) | |
101 | return -2; | |
102 | ||
d34843d0 BP |
103 | if (sdp->sd_args.ar_errors == GFS2_ERRORS_WITHDRAW) |
104 | printk(KERN_WARNING | |
105 | "GFS2: fsid=%s: warning: assertion \"%s\" failed\n" | |
106 | "GFS2: fsid=%s: function = %s, file = %s, line = %u\n", | |
107 | sdp->sd_fsname, assertion, | |
108 | sdp->sd_fsname, function, file, line); | |
b3b94faa DT |
109 | |
110 | if (sdp->sd_args.ar_debug) | |
111 | BUG(); | |
18ec7d5c SW |
112 | else |
113 | dump_stack(); | |
b3b94faa | 114 | |
d34843d0 BP |
115 | if (sdp->sd_args.ar_errors == GFS2_ERRORS_PANIC) |
116 | panic("GFS2: fsid=%s: warning: assertion \"%s\" failed\n" | |
117 | "GFS2: fsid=%s: function = %s, file = %s, line = %u\n", | |
118 | sdp->sd_fsname, assertion, | |
119 | sdp->sd_fsname, function, file, line); | |
120 | ||
b3b94faa DT |
121 | sdp->sd_last_warning = jiffies; |
122 | ||
123 | return -1; | |
124 | } | |
125 | ||
126 | /** | |
127 | * gfs2_consist_i - Flag a filesystem consistency error and withdraw | |
128 | * Returns: -1 if this call withdrew the machine, | |
129 | * 0 if it was already withdrawn | |
130 | */ | |
131 | ||
132 | int gfs2_consist_i(struct gfs2_sbd *sdp, int cluster_wide, const char *function, | |
133 | char *file, unsigned int line) | |
134 | { | |
135 | int rv; | |
136 | rv = gfs2_lm_withdraw(sdp, | |
137 | "GFS2: fsid=%s: fatal: filesystem consistency error\n" | |
138 | "GFS2: fsid=%s: function = %s, file = %s, line = %u\n", | |
139 | sdp->sd_fsname, | |
140 | sdp->sd_fsname, function, file, line); | |
141 | return rv; | |
142 | } | |
143 | ||
144 | /** | |
145 | * gfs2_consist_inode_i - Flag an inode consistency error and withdraw | |
146 | * Returns: -1 if this call withdrew the machine, | |
147 | * 0 if it was already withdrawn | |
148 | */ | |
149 | ||
150 | int gfs2_consist_inode_i(struct gfs2_inode *ip, int cluster_wide, | |
151 | const char *function, char *file, unsigned int line) | |
152 | { | |
feaa7bba | 153 | struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode); |
b3b94faa DT |
154 | int rv; |
155 | rv = gfs2_lm_withdraw(sdp, | |
156 | "GFS2: fsid=%s: fatal: filesystem consistency error\n" | |
157 | "GFS2: fsid=%s: inode = %llu %llu\n" | |
158 | "GFS2: fsid=%s: function = %s, file = %s, line = %u\n", | |
159 | sdp->sd_fsname, | |
dbb7cae2 SW |
160 | sdp->sd_fsname, (unsigned long long)ip->i_no_formal_ino, |
161 | (unsigned long long)ip->i_no_addr, | |
b3b94faa DT |
162 | sdp->sd_fsname, function, file, line); |
163 | return rv; | |
164 | } | |
165 | ||
166 | /** | |
167 | * gfs2_consist_rgrpd_i - Flag a RG consistency error and withdraw | |
168 | * Returns: -1 if this call withdrew the machine, | |
169 | * 0 if it was already withdrawn | |
170 | */ | |
171 | ||
172 | int gfs2_consist_rgrpd_i(struct gfs2_rgrpd *rgd, int cluster_wide, | |
173 | const char *function, char *file, unsigned int line) | |
174 | { | |
175 | struct gfs2_sbd *sdp = rgd->rd_sbd; | |
176 | int rv; | |
177 | rv = gfs2_lm_withdraw(sdp, | |
178 | "GFS2: fsid=%s: fatal: filesystem consistency error\n" | |
179 | "GFS2: fsid=%s: RG = %llu\n" | |
180 | "GFS2: fsid=%s: function = %s, file = %s, line = %u\n", | |
181 | sdp->sd_fsname, | |
bb8d8a6f | 182 | sdp->sd_fsname, (unsigned long long)rgd->rd_addr, |
b3b94faa DT |
183 | sdp->sd_fsname, function, file, line); |
184 | return rv; | |
185 | } | |
186 | ||
187 | /** | |
188 | * gfs2_meta_check_ii - Flag a magic number consistency error and withdraw | |
189 | * Returns: -1 if this call withdrew the machine, | |
190 | * -2 if it was already withdrawn | |
191 | */ | |
192 | ||
193 | int gfs2_meta_check_ii(struct gfs2_sbd *sdp, struct buffer_head *bh, | |
194 | const char *type, const char *function, char *file, | |
195 | unsigned int line) | |
196 | { | |
197 | int me; | |
198 | me = gfs2_lm_withdraw(sdp, | |
199 | "GFS2: fsid=%s: fatal: invalid metadata block\n" | |
200 | "GFS2: fsid=%s: bh = %llu (%s)\n" | |
201 | "GFS2: fsid=%s: function = %s, file = %s, line = %u\n", | |
202 | sdp->sd_fsname, | |
382066da | 203 | sdp->sd_fsname, (unsigned long long)bh->b_blocknr, type, |
b3b94faa DT |
204 | sdp->sd_fsname, function, file, line); |
205 | return (me) ? -1 : -2; | |
206 | } | |
207 | ||
208 | /** | |
209 | * gfs2_metatype_check_ii - Flag a metadata type consistency error and withdraw | |
210 | * Returns: -1 if this call withdrew the machine, | |
211 | * -2 if it was already withdrawn | |
212 | */ | |
213 | ||
214 | int gfs2_metatype_check_ii(struct gfs2_sbd *sdp, struct buffer_head *bh, | |
cd915493 | 215 | u16 type, u16 t, const char *function, |
b3b94faa DT |
216 | char *file, unsigned int line) |
217 | { | |
218 | int me; | |
219 | me = gfs2_lm_withdraw(sdp, | |
220 | "GFS2: fsid=%s: fatal: invalid metadata block\n" | |
221 | "GFS2: fsid=%s: bh = %llu (type: exp=%u, found=%u)\n" | |
222 | "GFS2: fsid=%s: function = %s, file = %s, line = %u\n", | |
223 | sdp->sd_fsname, | |
382066da | 224 | sdp->sd_fsname, (unsigned long long)bh->b_blocknr, type, t, |
b3b94faa DT |
225 | sdp->sd_fsname, function, file, line); |
226 | return (me) ? -1 : -2; | |
227 | } | |
228 | ||
229 | /** | |
230 | * gfs2_io_error_i - Flag an I/O error and withdraw | |
231 | * Returns: -1 if this call withdrew the machine, | |
232 | * 0 if it was already withdrawn | |
233 | */ | |
234 | ||
235 | int gfs2_io_error_i(struct gfs2_sbd *sdp, const char *function, char *file, | |
236 | unsigned int line) | |
237 | { | |
238 | int rv; | |
239 | rv = gfs2_lm_withdraw(sdp, | |
240 | "GFS2: fsid=%s: fatal: I/O error\n" | |
241 | "GFS2: fsid=%s: function = %s, file = %s, line = %u\n", | |
242 | sdp->sd_fsname, | |
243 | sdp->sd_fsname, 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 | ||
253 | int 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 | "GFS2: fsid=%s: fatal: I/O error\n" | |
259 | "GFS2: fsid=%s: block = %llu\n" | |
260 | "GFS2: fsid=%s: function = %s, file = %s, line = %u\n", | |
261 | sdp->sd_fsname, | |
382066da | 262 | sdp->sd_fsname, (unsigned long long)bh->b_blocknr, |
b3b94faa DT |
263 | sdp->sd_fsname, function, file, line); |
264 | return rv; | |
265 | } | |
266 | ||
b3b94faa DT |
267 | void gfs2_icbit_munge(struct gfs2_sbd *sdp, unsigned char **bitmap, |
268 | unsigned int bit, int new_value) | |
269 | { | |
270 | unsigned int c, o, b = bit; | |
271 | int old_value; | |
272 | ||
273 | c = b / (8 * PAGE_SIZE); | |
274 | b %= 8 * PAGE_SIZE; | |
275 | o = b / 8; | |
276 | b %= 8; | |
277 | ||
278 | old_value = (bitmap[c][o] & (1 << b)); | |
279 | gfs2_assert_withdraw(sdp, !old_value != !new_value); | |
280 | ||
281 | if (new_value) | |
282 | bitmap[c][o] |= 1 << b; | |
283 | else | |
284 | bitmap[c][o] &= ~(1 << b); | |
285 | } | |
286 |