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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 | |
22 | struct kmem_cache *gfs2_glock_cachep __read_mostly; |
23 | struct kmem_cache *gfs2_glock_aspace_cachep __read_mostly; |
24 | struct kmem_cache *gfs2_inode_cachep __read_mostly; |
25 | struct kmem_cache *gfs2_bufdata_cachep __read_mostly; |
26 | struct kmem_cache *gfs2_rgrpd_cachep __read_mostly; |
27 | struct kmem_cache *gfs2_quotad_cachep __read_mostly; |
28 | |
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 | |
35 | int 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59 | fs_err(sdp, "withdrawn\n"); |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72 | * -2 if it was already withdrawn |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 | |
75 | int 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 | |
94 | int 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 | |
131 | int 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 | |
149 | int 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 | |
171 | int 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 | |
192 | int 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 | |
213 | int 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 | |
234 | int 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 | |
252 | int 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 | |
266 | void 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 | |
286 |
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