244 lines
6.7 KiB
C
244 lines
6.7 KiB
C
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/*
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* Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
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* Copyright (C) 2004-2005 Red Hat, Inc. All rights reserved.
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*
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* This copyrighted material is made available to anyone wishing to use,
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* modify, copy, or redistribute it subject to the terms and conditions
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* of the GNU General Public License v.2.
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*/
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#include <linux/sched.h>
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#include <linux/slab.h>
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#include <linux/spinlock.h>
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#include <linux/completion.h>
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#include <linux/buffer_head.h>
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#include <linux/crc32.h>
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#include <asm/semaphore.h>
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#include <asm/uaccess.h>
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#include "gfs2.h"
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#include "glock.h"
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#include "lm.h"
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kmem_cache_t *gfs2_glock_cachep __read_mostly;
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kmem_cache_t *gfs2_inode_cachep __read_mostly;
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kmem_cache_t *gfs2_bufdata_cachep __read_mostly;
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uint32_t gfs2_disk_hash(const char *data, int len)
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{
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return crc32_le(0xFFFFFFFF, data, len) ^ 0xFFFFFFFF;
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}
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void gfs2_assert_i(struct gfs2_sbd *sdp)
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{
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printk(KERN_EMERG "GFS2: fsid=%s: fatal assertion failed\n",
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sdp->sd_fsname);
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}
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/**
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* gfs2_assert_withdraw_i - Cause the machine to withdraw if @assertion is false
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* Returns: -1 if this call withdrew the machine,
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* -2 if it was already withdrawn
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*/
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int gfs2_assert_withdraw_i(struct gfs2_sbd *sdp, char *assertion,
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const char *function, char *file, unsigned int line)
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{
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int me;
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me = gfs2_lm_withdraw(sdp,
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"GFS2: fsid=%s: fatal: assertion \"%s\" failed\n"
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"GFS2: fsid=%s: function = %s, file = %s, line = %u\n",
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sdp->sd_fsname, assertion,
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sdp->sd_fsname, function, file, line);
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return (me) ? -1 : -2;
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}
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/**
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* gfs2_assert_warn_i - Print a message to the console if @assertion is false
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* Returns: -1 if we printed something
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* -2 if we didn't
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*/
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int gfs2_assert_warn_i(struct gfs2_sbd *sdp, char *assertion,
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const char *function, char *file, unsigned int line)
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{
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if (time_before(jiffies,
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sdp->sd_last_warning +
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gfs2_tune_get(sdp, gt_complain_secs) * HZ))
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return -2;
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printk(KERN_WARNING
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"GFS2: fsid=%s: warning: assertion \"%s\" failed\n"
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"GFS2: fsid=%s: function = %s, file = %s, line = %u\n",
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sdp->sd_fsname, assertion,
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sdp->sd_fsname, function, file, line);
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if (sdp->sd_args.ar_debug)
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BUG();
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sdp->sd_last_warning = jiffies;
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return -1;
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}
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/**
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* gfs2_consist_i - Flag a filesystem consistency error and withdraw
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* Returns: -1 if this call withdrew the machine,
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* 0 if it was already withdrawn
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*/
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int gfs2_consist_i(struct gfs2_sbd *sdp, int cluster_wide, const char *function,
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char *file, unsigned int line)
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{
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int rv;
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rv = gfs2_lm_withdraw(sdp,
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"GFS2: fsid=%s: fatal: filesystem consistency error\n"
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"GFS2: fsid=%s: function = %s, file = %s, line = %u\n",
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sdp->sd_fsname,
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sdp->sd_fsname, function, file, line);
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return rv;
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}
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/**
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* gfs2_consist_inode_i - Flag an inode consistency error and withdraw
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* Returns: -1 if this call withdrew the machine,
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* 0 if it was already withdrawn
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*/
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int gfs2_consist_inode_i(struct gfs2_inode *ip, int cluster_wide,
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const char *function, char *file, unsigned int line)
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{
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struct gfs2_sbd *sdp = ip->i_sbd;
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int rv;
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rv = gfs2_lm_withdraw(sdp,
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"GFS2: fsid=%s: fatal: filesystem consistency error\n"
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"GFS2: fsid=%s: inode = %llu %llu\n"
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"GFS2: fsid=%s: function = %s, file = %s, line = %u\n",
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sdp->sd_fsname,
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sdp->sd_fsname, ip->i_num.no_formal_ino, ip->i_num.no_addr,
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sdp->sd_fsname, function, file, line);
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return rv;
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}
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/**
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* gfs2_consist_rgrpd_i - Flag a RG consistency error and withdraw
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* Returns: -1 if this call withdrew the machine,
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* 0 if it was already withdrawn
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*/
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int gfs2_consist_rgrpd_i(struct gfs2_rgrpd *rgd, int cluster_wide,
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const char *function, char *file, unsigned int line)
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{
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struct gfs2_sbd *sdp = rgd->rd_sbd;
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int rv;
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rv = gfs2_lm_withdraw(sdp,
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"GFS2: fsid=%s: fatal: filesystem consistency error\n"
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"GFS2: fsid=%s: RG = %llu\n"
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"GFS2: fsid=%s: function = %s, file = %s, line = %u\n",
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sdp->sd_fsname,
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sdp->sd_fsname, rgd->rd_ri.ri_addr,
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sdp->sd_fsname, function, file, line);
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return rv;
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}
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/**
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* gfs2_meta_check_ii - Flag a magic number consistency error and withdraw
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* Returns: -1 if this call withdrew the machine,
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* -2 if it was already withdrawn
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*/
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int gfs2_meta_check_ii(struct gfs2_sbd *sdp, struct buffer_head *bh,
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const char *type, const char *function, char *file,
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unsigned int line)
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{
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int me;
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me = gfs2_lm_withdraw(sdp,
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"GFS2: fsid=%s: fatal: invalid metadata block\n"
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"GFS2: fsid=%s: bh = %llu (%s)\n"
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"GFS2: fsid=%s: function = %s, file = %s, line = %u\n",
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sdp->sd_fsname,
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sdp->sd_fsname, (uint64_t)bh->b_blocknr, type,
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sdp->sd_fsname, function, file, line);
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return (me) ? -1 : -2;
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}
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/**
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* gfs2_metatype_check_ii - Flag a metadata type consistency error and withdraw
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* Returns: -1 if this call withdrew the machine,
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* -2 if it was already withdrawn
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*/
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int gfs2_metatype_check_ii(struct gfs2_sbd *sdp, struct buffer_head *bh,
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uint16_t type, uint16_t t, const char *function,
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char *file, unsigned int line)
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{
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int me;
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me = gfs2_lm_withdraw(sdp,
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"GFS2: fsid=%s: fatal: invalid metadata block\n"
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"GFS2: fsid=%s: bh = %llu (type: exp=%u, found=%u)\n"
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"GFS2: fsid=%s: function = %s, file = %s, line = %u\n",
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sdp->sd_fsname,
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sdp->sd_fsname, (uint64_t)bh->b_blocknr, type, t,
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sdp->sd_fsname, function, file, line);
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return (me) ? -1 : -2;
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}
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/**
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* gfs2_io_error_i - Flag an I/O error and withdraw
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* Returns: -1 if this call withdrew the machine,
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* 0 if it was already withdrawn
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*/
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int gfs2_io_error_i(struct gfs2_sbd *sdp, const char *function, char *file,
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unsigned int line)
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{
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int rv;
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rv = gfs2_lm_withdraw(sdp,
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"GFS2: fsid=%s: fatal: I/O error\n"
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"GFS2: fsid=%s: function = %s, file = %s, line = %u\n",
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sdp->sd_fsname,
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sdp->sd_fsname, function, file, line);
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return rv;
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}
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/**
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* gfs2_io_error_bh_i - Flag a buffer I/O error and withdraw
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* Returns: -1 if this call withdrew the machine,
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* 0 if it was already withdrawn
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*/
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int gfs2_io_error_bh_i(struct gfs2_sbd *sdp, struct buffer_head *bh,
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const char *function, char *file, unsigned int line)
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{
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int rv;
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rv = gfs2_lm_withdraw(sdp,
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"GFS2: fsid=%s: fatal: I/O error\n"
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"GFS2: fsid=%s: block = %llu\n"
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"GFS2: fsid=%s: function = %s, file = %s, line = %u\n",
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sdp->sd_fsname,
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sdp->sd_fsname, (uint64_t)bh->b_blocknr,
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sdp->sd_fsname, function, file, line);
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return rv;
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}
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void gfs2_icbit_munge(struct gfs2_sbd *sdp, unsigned char **bitmap,
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unsigned int bit, int new_value)
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{
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unsigned int c, o, b = bit;
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int old_value;
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c = b / (8 * PAGE_SIZE);
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b %= 8 * PAGE_SIZE;
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o = b / 8;
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b %= 8;
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old_value = (bitmap[c][o] & (1 << b));
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gfs2_assert_withdraw(sdp, !old_value != !new_value);
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if (new_value)
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bitmap[c][o] |= 1 << b;
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else
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bitmap[c][o] &= ~(1 << b);
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}
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