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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
Nathan Scott1e69dd02006-06-19 08:39:53 +10002 * Copyright (c) 2000-2006 Silicon Graphics, Inc.
Nathan Scott7b718762005-11-02 14:58:39 +11003 * All Rights Reserved.
Linus Torvalds1da177e2005-04-16 15:20:36 -07004 *
Nathan Scott7b718762005-11-02 14:58:39 +11005 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License as
Linus Torvalds1da177e2005-04-16 15:20:36 -07007 * published by the Free Software Foundation.
8 *
Nathan Scott7b718762005-11-02 14:58:39 +11009 * This program is distributed in the hope that it would be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
Linus Torvalds1da177e2005-04-16 15:20:36 -070013 *
Nathan Scott7b718762005-11-02 14:58:39 +110014 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write the Free Software Foundation,
16 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
Linus Torvalds1da177e2005-04-16 15:20:36 -070017 */
Linus Torvalds1da177e2005-04-16 15:20:36 -070018#include "xfs.h"
Nathan Scotta844f452005-11-02 14:38:42 +110019#include "xfs_fs.h"
Linus Torvalds1da177e2005-04-16 15:20:36 -070020#include "xfs_types.h"
Nathan Scotta844f452005-11-02 14:38:42 +110021#include "xfs_bit.h"
Linus Torvalds1da177e2005-04-16 15:20:36 -070022#include "xfs_log.h"
Nathan Scotta844f452005-11-02 14:38:42 +110023#include "xfs_inum.h"
Linus Torvalds1da177e2005-04-16 15:20:36 -070024#include "xfs_trans.h"
25#include "xfs_sb.h"
26#include "xfs_ag.h"
Linus Torvalds1da177e2005-04-16 15:20:36 -070027#include "xfs_dir2.h"
28#include "xfs_dmapi.h"
29#include "xfs_mount.h"
Linus Torvalds1da177e2005-04-16 15:20:36 -070030#include "xfs_bmap_btree.h"
Nathan Scotta844f452005-11-02 14:38:42 +110031#include "xfs_alloc_btree.h"
Linus Torvalds1da177e2005-04-16 15:20:36 -070032#include "xfs_ialloc_btree.h"
Nathan Scotta844f452005-11-02 14:38:42 +110033#include "xfs_dir2_sf.h"
34#include "xfs_attr_sf.h"
35#include "xfs_dinode.h"
36#include "xfs_inode.h"
37#include "xfs_inode_item.h"
Linus Torvalds1da177e2005-04-16 15:20:36 -070038#include "xfs_itable.h"
39#include "xfs_btree.h"
40#include "xfs_alloc.h"
41#include "xfs_ialloc.h"
42#include "xfs_attr.h"
Linus Torvalds1da177e2005-04-16 15:20:36 -070043#include "xfs_bmap.h"
Linus Torvalds1da177e2005-04-16 15:20:36 -070044#include "xfs_error.h"
45#include "xfs_buf_item.h"
46#include "xfs_rw.h"
Christoph Hellwig0b1b2132009-12-14 23:14:59 +000047#include "xfs_trace.h"
Linus Torvalds1da177e2005-04-16 15:20:36 -070048
49/*
Linus Torvalds1da177e2005-04-16 15:20:36 -070050 * Force a shutdown of the filesystem instantly while keeping
51 * the filesystem consistent. We don't do an unmount here; just shutdown
52 * the shop, make sure that absolutely nothing persistent happens to
53 * this filesystem after this point.
54 */
Linus Torvalds1da177e2005-04-16 15:20:36 -070055void
56xfs_do_force_shutdown(
Christoph Hellwig48c872a9f2007-08-30 17:20:31 +100057 xfs_mount_t *mp,
Linus Torvalds1da177e2005-04-16 15:20:36 -070058 int flags,
59 char *fname,
60 int lnnum)
61{
62 int logerror;
Linus Torvalds1da177e2005-04-16 15:20:36 -070063
Nathan Scott7d04a332006-06-09 14:58:38 +100064 logerror = flags & SHUTDOWN_LOG_IO_ERROR;
Linus Torvalds1da177e2005-04-16 15:20:36 -070065
Nathan Scott7d04a332006-06-09 14:58:38 +100066 if (!(flags & SHUTDOWN_FORCE_UMOUNT)) {
67 cmn_err(CE_NOTE, "xfs_force_shutdown(%s,0x%x) called from "
68 "line %d of file %s. Return address = 0x%p",
69 mp->m_fsname, flags, lnnum, fname, __return_address);
Linus Torvalds1da177e2005-04-16 15:20:36 -070070 }
71 /*
72 * No need to duplicate efforts.
73 */
74 if (XFS_FORCED_SHUTDOWN(mp) && !logerror)
75 return;
76
77 /*
78 * This flags XFS_MOUNT_FS_SHUTDOWN, makes sure that we don't
79 * queue up anybody new on the log reservations, and wakes up
Nathan Scott7d04a332006-06-09 14:58:38 +100080 * everybody who's sleeping on log reservations to tell them
81 * the bad news.
Linus Torvalds1da177e2005-04-16 15:20:36 -070082 */
83 if (xfs_log_force_umount(mp, logerror))
84 return;
85
Nathan Scott7d04a332006-06-09 14:58:38 +100086 if (flags & SHUTDOWN_CORRUPT_INCORE) {
Linus Torvalds1da177e2005-04-16 15:20:36 -070087 xfs_cmn_err(XFS_PTAG_SHUTDOWN_CORRUPT, CE_ALERT, mp,
88 "Corruption of in-memory data detected. Shutting down filesystem: %s",
89 mp->m_fsname);
90 if (XFS_ERRLEVEL_HIGH <= xfs_error_level) {
91 xfs_stack_trace();
92 }
Nathan Scott7d04a332006-06-09 14:58:38 +100093 } else if (!(flags & SHUTDOWN_FORCE_UMOUNT)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -070094 if (logerror) {
95 xfs_cmn_err(XFS_PTAG_SHUTDOWN_LOGERROR, CE_ALERT, mp,
Nathan Scott7d04a332006-06-09 14:58:38 +100096 "Log I/O Error Detected. Shutting down filesystem: %s",
Linus Torvalds1da177e2005-04-16 15:20:36 -070097 mp->m_fsname);
Nathan Scott7d04a332006-06-09 14:58:38 +100098 } else if (flags & SHUTDOWN_DEVICE_REQ) {
Linus Torvalds1da177e2005-04-16 15:20:36 -070099 xfs_cmn_err(XFS_PTAG_SHUTDOWN_IOERROR, CE_ALERT, mp,
Nathan Scott7d04a332006-06-09 14:58:38 +1000100 "All device paths lost. Shutting down filesystem: %s",
101 mp->m_fsname);
102 } else if (!(flags & SHUTDOWN_REMOTE_REQ)) {
103 xfs_cmn_err(XFS_PTAG_SHUTDOWN_IOERROR, CE_ALERT, mp,
104 "I/O Error Detected. Shutting down filesystem: %s",
Linus Torvalds1da177e2005-04-16 15:20:36 -0700105 mp->m_fsname);
106 }
107 }
Nathan Scott7d04a332006-06-09 14:58:38 +1000108 if (!(flags & SHUTDOWN_FORCE_UMOUNT)) {
109 cmn_err(CE_ALERT, "Please umount the filesystem, "
110 "and rectify the problem(s)");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700111 }
112}
113
Linus Torvalds1da177e2005-04-16 15:20:36 -0700114/*
115 * Prints out an ALERT message about I/O error.
116 */
117void
118xfs_ioerror_alert(
119 char *func,
120 struct xfs_mount *mp,
121 xfs_buf_t *bp,
122 xfs_daddr_t blkno)
123{
124 cmn_err(CE_ALERT,
125 "I/O error in filesystem (\"%s\") meta-data dev %s block 0x%llx"
Christoph Hellwigda1650a2005-11-02 10:21:35 +1100126 " (\"%s\") error %d buf count %zd",
Linus Torvalds1da177e2005-04-16 15:20:36 -0700127 (!mp || !mp->m_fsname) ? "(fs name not set)" : mp->m_fsname,
Nathan Scottce8e9222006-01-11 15:39:08 +1100128 XFS_BUFTARG_NAME(XFS_BUF_TARGET(bp)),
129 (__uint64_t)blkno, func,
130 XFS_BUF_GETERROR(bp), XFS_BUF_COUNT(bp));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700131}
132
133/*
134 * This isn't an absolute requirement, but it is
135 * just a good idea to call xfs_read_buf instead of
136 * directly doing a read_buf call. For one, we shouldn't
137 * be doing this disk read if we are in SHUTDOWN state anyway,
138 * so this stops that from happening. Secondly, this does all
139 * the error checking stuff and the brelse if appropriate for
140 * the caller, so the code can be a little leaner.
141 */
142
143int
144xfs_read_buf(
145 struct xfs_mount *mp,
146 xfs_buftarg_t *target,
147 xfs_daddr_t blkno,
148 int len,
149 uint flags,
150 xfs_buf_t **bpp)
151{
152 xfs_buf_t *bp;
153 int error;
154
Christoph Hellwig6ad112b2009-11-24 18:02:23 +0000155 if (!flags)
156 flags = XBF_LOCK | XBF_MAPPED;
157
158 bp = xfs_buf_read(target, blkno, len, flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700159 if (!bp)
160 return XFS_ERROR(EIO);
161 error = XFS_BUF_GETERROR(bp);
162 if (bp && !error && !XFS_FORCED_SHUTDOWN(mp)) {
163 *bpp = bp;
164 } else {
165 *bpp = NULL;
166 if (error) {
167 xfs_ioerror_alert("xfs_read_buf", mp, bp, XFS_BUF_ADDR(bp));
168 } else {
169 error = XFS_ERROR(EIO);
170 }
171 if (bp) {
172 XFS_BUF_UNDONE(bp);
173 XFS_BUF_UNDELAYWRITE(bp);
174 XFS_BUF_STALE(bp);
175 /*
176 * brelse clears B_ERROR and b_error
177 */
178 xfs_buf_relse(bp);
179 }
180 }
181 return (error);
182}
183
184/*
Christoph Hellwig5683f532009-11-14 16:17:21 +0000185 * helper function to extract extent size hint from inode
186 */
187xfs_extlen_t
188xfs_get_extsz_hint(
189 struct xfs_inode *ip)
190{
191 xfs_extlen_t extsz;
192
193 if (unlikely(XFS_IS_REALTIME_INODE(ip))) {
194 extsz = (ip->i_d.di_flags & XFS_DIFLAG_EXTSIZE)
195 ? ip->i_d.di_extsize
196 : ip->i_mount->m_sb.sb_rextsize;
197 ASSERT(extsz);
198 } else {
199 extsz = (ip->i_d.di_flags & XFS_DIFLAG_EXTSIZE)
200 ? ip->i_d.di_extsize : 0;
201 }
202
203 return extsz;
204}