/* * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved. * Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved. * * This copyrighted material is made available to anyone wishing to use, * modify, copy, or redistribute it subject to the terms and conditions * of the GNU General Public License version 2. */ #include <linux/slab.h> #include <linux/spinlock.h> #include <linux/completion.h> #include <linux/buffer_head.h> #include <linux/crc32.h> #include <linux/gfs2_ondisk.h> #include <asm/uaccess.h> #include "gfs2.h" #include "incore.h" #include "glock.h" #include "util.h" struct kmem_cache *gfs2_glock_cachep __read_mostly; struct kmem_cache *gfs2_inode_cachep __read_mostly; struct kmem_cache *gfs2_bufdata_cachep __read_mostly; struct kmem_cache *gfs2_rgrpd_cachep __read_mostly; struct kmem_cache *gfs2_quotad_cachep __read_mostly; void gfs2_assert_i(struct gfs2_sbd *sdp) { printk(KERN_EMERG "GFS2: fsid=%s: fatal assertion failed\n", sdp->sd_fsname); } int gfs2_lm_withdraw(struct gfs2_sbd *sdp, char *fmt, ...) { struct lm_lockstruct *ls = &sdp->sd_lockstruct; const struct lm_lockops *lm = ls->ls_ops; va_list args; if (test_and_set_bit(SDF_SHUTDOWN, &sdp->sd_flags)) return 0; va_start(args, fmt); vprintk(fmt, args); va_end(args); fs_err(sdp, "about to withdraw this file system\n"); BUG_ON(sdp->sd_args.ar_debug); kobject_uevent(&sdp->sd_kobj, KOBJ_OFFLINE); if (lm->lm_unmount) { fs_err(sdp, "telling LM to unmount\n"); lm->lm_unmount(sdp); } fs_err(sdp, "withdrawn\n"); dump_stack(); return -1; } /** * gfs2_assert_withdraw_i - Cause the machine to withdraw if @assertion is false * Returns: -1 if this call withdrew the machine, * -2 if it was already withdrawn */ int gfs2_assert_withdraw_i(struct gfs2_sbd *sdp, char *assertion, const char *function, char *file, unsigned int line) { int me; me = gfs2_lm_withdraw(sdp, "GFS2: fsid=%s: fatal: assertion \"%s\" failed\n" "GFS2: fsid=%s: function = %s, file = %s, line = %u\n", sdp->sd_fsname, assertion, sdp->sd_fsname, function, file, line); dump_stack(); return (me) ? -1 : -2; } /** * gfs2_assert_warn_i - Print a message to the console if @assertion is false * Returns: -1 if we printed something * -2 if we didn't */ int gfs2_assert_warn_i(struct gfs2_sbd *sdp, char *assertion, const char *function, char *file, unsigned int line) { if (time_before(jiffies, sdp->sd_last_warning + gfs2_tune_get(sdp, gt_complain_secs) * HZ)) return -2; printk(KERN_WARNING "GFS2: fsid=%s: warning: assertion \"%s\" failed\n" "GFS2: fsid=%s: function = %s, file = %s, line = %u\n", sdp->sd_fsname, assertion, sdp->sd_fsname, function, file, line); if (sdp->sd_args.ar_debug) BUG(); else dump_stack(); sdp->sd_last_warning = jiffies; return -1; } /** * gfs2_consist_i - Flag a filesystem consistency error and withdraw * Returns: -1 if this call withdrew the machine, * 0 if it was already withdrawn */ int gfs2_consist_i(struct gfs2_sbd *sdp, int cluster_wide, const char *function, char *file, unsigned int line) { int rv; rv = gfs2_lm_withdraw(sdp, "GFS2: fsid=%s: fatal: filesystem consistency error\n" "GFS2: fsid=%s: function = %s, file = %s, line = %u\n", sdp->sd_fsname, sdp->sd_fsname, function, file, line); return rv; } /** * gfs2_consist_inode_i - Flag an inode consistency error and withdraw * Returns: -1 if this call withdrew the machine, * 0 if it was already withdrawn */ int gfs2_consist_inode_i(struct gfs2_inode *ip, int cluster_wide, const char *function, char *file, unsigned int line) { struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode); int rv; rv = gfs2_lm_withdraw(sdp, "GFS2: fsid=%s: fatal: filesystem consistency error\n" "GFS2: fsid=%s: inode = %llu %llu\n" "GFS2: fsid=%s: function = %s, file = %s, line = %u\n", sdp->sd_fsname, sdp->sd_fsname, (unsigned long long)ip->i_no_formal_ino, (unsigned long long)ip->i_no_addr, sdp->sd_fsname, function, file, line); return rv; } /** * gfs2_consist_rgrpd_i - Flag a RG consistency error and withdraw * Returns: -1 if this call withdrew the machine, * 0 if it was already withdrawn */ int gfs2_consist_rgrpd_i(struct gfs2_rgrpd *rgd, int cluster_wide, const char *function, char *file, unsigned int line) { struct gfs2_sbd *sdp = rgd->rd_sbd; int rv; rv = gfs2_lm_withdraw(sdp, "GFS2: fsid=%s: fatal: filesystem consistency error\n" "GFS2: fsid=%s: RG = %llu\n" "GFS2: fsid=%s: function = %s, file = %s, line = %u\n", sdp->sd_fsname, sdp->sd_fsname, (unsigned long long)rgd->rd_addr, sdp->sd_fsname, function, file, line); return rv; } /** * gfs2_meta_check_ii - Flag a magic number consistency error and withdraw * Returns: -1 if this call withdrew the machine, * -2 if it was already withdrawn */ int gfs2_meta_check_ii(struct gfs2_sbd *sdp, struct buffer_head *bh, const char *type, const char *function, char *file, unsigned int line) { int me; me = gfs2_lm_withdraw(sdp, "GFS2: fsid=%s: fatal: invalid metadata block\n" "GFS2: fsid=%s: bh = %llu (%s)\n" "GFS2: fsid=%s: function = %s, file = %s, line = %u\n", sdp->sd_fsname, sdp->sd_fsname, (unsigned long long)bh->b_blocknr, type, sdp->sd_fsname, function, file, line); return (me) ? -1 : -2; } /** * gfs2_metatype_check_ii - Flag a metadata type consistency error and withdraw * Returns: -1 if this call withdrew the machine, * -2 if it was already withdrawn */ int gfs2_metatype_check_ii(struct gfs2_sbd *sdp, struct buffer_head *bh, u16 type, u16 t, const char *function, char *file, unsigned int line) { int me; me = gfs2_lm_withdraw(sdp, "GFS2: fsid=%s: fatal: invalid metadata block\n" "GFS2: fsid=%s: bh = %llu (type: exp=%u, found=%u)\n" "GFS2: fsid=%s: function = %s, file = %s, line = %u\n", sdp->sd_fsname, sdp->sd_fsname, (unsigned long long)bh->b_blocknr, type, t, sdp->sd_fsname, function, file, line); return (me) ? -1 : -2; } /** * gfs2_io_error_i - Flag an I/O error and withdraw * Returns: -1 if this call withdrew the machine, * 0 if it was already withdrawn */ int gfs2_io_error_i(struct gfs2_sbd *sdp, const char *function, char *file, unsigned int line) { int rv; rv = gfs2_lm_withdraw(sdp, "GFS2: fsid=%s: fatal: I/O error\n" "GFS2: fsid=%s: function = %s, file = %s, line = %u\n", sdp->sd_fsname, sdp->sd_fsname, function, file, line); return rv; } /** * gfs2_io_error_bh_i - Flag a buffer I/O error and withdraw * Returns: -1 if this call withdrew the machine, * 0 if it was already withdrawn */ int gfs2_io_error_bh_i(struct gfs2_sbd *sdp, struct buffer_head *bh, const char *function, char *file, unsigned int line) { int rv; rv = gfs2_lm_withdraw(sdp, "GFS2: fsid=%s: fatal: I/O error\n" "GFS2: fsid=%s: block = %llu\n" "GFS2: fsid=%s: function = %s, file = %s, line = %u\n", sdp->sd_fsname, sdp->sd_fsname, (unsigned long long)bh->b_blocknr, sdp->sd_fsname, function, file, line); return rv; } void gfs2_icbit_munge(struct gfs2_sbd *sdp, unsigned char **bitmap, unsigned int bit, int new_value) { unsigned int c, o, b = bit; int old_value; c = b / (8 * PAGE_SIZE); b %= 8 * PAGE_SIZE; o = b / 8; b %= 8; old_value = (bitmap[c][o] & (1 << b)); gfs2_assert_withdraw(sdp, !old_value != !new_value); if (new_value) bitmap[c][o] |= 1 << b; else bitmap[c][o] &= ~(1 << b); }