mirror of https://github.com/vitalif/e2fsprogs
699 lines
19 KiB
C
699 lines
19 KiB
C
/*
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* journal.c --- code for handling the "ext3" journal
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*
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* Copyright (C) 2000 Andreas Dilger
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* Copyright (C) 2000 Theodore Ts'o
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*
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* Parts of the code are based on fs/jfs/journal.c by Stephen C. Tweedie
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* Copyright (C) 1999 Red Hat Software
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*
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* This file may be redistributed under the terms of the
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* GNU General Public License version 2 or at your discretion
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* any later version.
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*/
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#ifdef HAVE_SYS_MOUNT_H
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#include <sys/mount.h>
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#define MNT_FL (MS_MGC_VAL | MS_RDONLY)
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#endif
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#ifdef HAVE_SYS_STAT_H
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#include <sys/stat.h>
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#endif
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#define E2FSCK_INCLUDE_INLINE_FUNCS
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#include "jfs_user.h"
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#include "problem.h"
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#include "uuid/uuid.h"
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#ifdef JFS_DEBUG /* Enabled by configure --enable-jfs-debug */
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static int bh_count = 0;
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int journal_enable_debug = 2;
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#endif
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/* Kernel compatibility functions for handling the journal. These allow us
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* to use the recovery.c file virtually unchanged from the kernel, so we
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* don't have to do much to keep kernel and user recovery in sync.
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*/
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int bmap(struct inode *inode, int block)
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{
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int retval;
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blk_t phys;
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retval = ext2fs_bmap(inode->i_ctx->fs, inode->i_ino, &inode->i_ext2,
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NULL, 0, block, &phys);
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if (retval)
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com_err(inode->i_ctx->device_name, retval,
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_("bmap journal inode %ld, block %d\n"),
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inode->i_ino, block);
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return phys;
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}
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struct buffer_head *getblk(e2fsck_t ctx, blk_t blocknr, int blocksize)
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{
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struct buffer_head *bh;
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bh = e2fsck_allocate_memory(ctx, sizeof(*bh), "block buffer");
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if (!bh)
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return NULL;
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jfs_debug(4, "getblk for block %lu (%d bytes)(total %d)\n",
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(unsigned long) blocknr, blocksize, ++bh_count);
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bh->b_ctx = ctx;
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bh->b_size = blocksize;
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bh->b_blocknr = blocknr;
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return bh;
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}
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void ll_rw_block(int rw, int nr, struct buffer_head *bhp[])
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{
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int retval;
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struct buffer_head *bh;
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for (; nr > 0; --nr) {
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bh = *bhp++;
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if (rw == READ && !bh->b_uptodate) {
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jfs_debug(3, "reading block %lu/%p\n",
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(unsigned long) bh->b_blocknr, (void *) bh);
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retval = io_channel_read_blk(bh->b_ctx->journal_io,
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bh->b_blocknr,
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1, bh->b_data);
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if (retval) {
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com_err(bh->b_ctx->device_name, retval,
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"while reading block %ld\n",
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bh->b_blocknr);
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bh->b_err = retval;
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continue;
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}
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bh->b_uptodate = 1;
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} else if (rw == WRITE && bh->b_dirty) {
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jfs_debug(3, "writing block %lu/%p\n",
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(unsigned long) bh->b_blocknr, (void *) bh);
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retval = io_channel_write_blk(bh->b_ctx->journal_io,
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bh->b_blocknr,
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1, bh->b_data);
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if (retval) {
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com_err(bh->b_ctx->device_name, retval,
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"while writing block %ld\n",
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bh->b_blocknr);
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bh->b_err = retval;
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continue;
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}
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bh->b_dirty = 0;
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bh->b_uptodate = 1;
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} else
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jfs_debug(3, "no-op %s for block %lu\n",
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rw == READ ? "read" : "write",
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(unsigned long) bh->b_blocknr);
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}
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}
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void mark_buffer_dirty(struct buffer_head *bh, int dummy)
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{
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bh->b_dirty = dummy | 1; /* use dummy to avoid unused variable */
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}
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static void mark_buffer_clean(struct buffer_head * bh)
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{
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bh->b_dirty = 0;
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}
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void brelse(struct buffer_head *bh)
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{
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if (bh->b_dirty)
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ll_rw_block(WRITE, 1, &bh);
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jfs_debug(3, "freeing block %lu/%p (total %d)\n",
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(unsigned long) bh->b_blocknr, (void *) bh, --bh_count);
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ext2fs_free_mem((void **) &bh);
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}
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int buffer_uptodate(struct buffer_head *bh)
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{
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return bh->b_uptodate;
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}
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void mark_buffer_uptodate(struct buffer_head *bh, int val)
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{
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bh->b_uptodate = val;
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}
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void wait_on_buffer(struct buffer_head *bh)
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{
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if (!bh->b_uptodate)
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ll_rw_block(READ, 1, &bh);
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}
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static void e2fsck_clear_recover(e2fsck_t ctx, int error)
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{
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ctx->fs->super->s_feature_incompat &= ~EXT3_FEATURE_INCOMPAT_RECOVER;
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/* if we had an error doing journal recovery, we need a full fsck */
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if (error)
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ctx->fs->super->s_state &= ~EXT2_VALID_FS;
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ext2fs_mark_super_dirty(ctx->fs);
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}
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static errcode_t e2fsck_journal_init_inode(e2fsck_t ctx,
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struct ext2_super_block *s,
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journal_t **journal)
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{
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struct inode *inode;
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struct buffer_head *bh;
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blk_t start;
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int retval;
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jfs_debug(1, "Using journal inode %u\n", s->s_journal_inum);
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*journal = e2fsck_allocate_memory(ctx, sizeof(journal_t), "journal");
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if (!*journal) {
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return EXT2_ET_NO_MEMORY;
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}
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inode = e2fsck_allocate_memory(ctx, sizeof(*inode), "journal inode");
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if (!inode) {
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retval = EXT2_ET_NO_MEMORY;
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goto exit_journal;
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}
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inode->i_ctx = ctx;
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inode->i_ino = s->s_journal_inum;
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retval = ext2fs_read_inode(ctx->fs, s->s_journal_inum, &inode->i_ext2);
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if (retval)
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goto exit_inode;
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(*journal)->j_dev = ctx;
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(*journal)->j_inode = inode;
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(*journal)->j_blocksize = ctx->fs->blocksize;
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(*journal)->j_maxlen = inode->i_ext2.i_size / (*journal)->j_blocksize;
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ctx->journal_io = ctx->fs->io;
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if (!inode->i_ext2.i_links_count ||
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!LINUX_S_ISREG(inode->i_ext2.i_mode) ||
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(*journal)->j_maxlen < JFS_MIN_JOURNAL_BLOCKS ||
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(start = bmap(inode, 0)) == 0) {
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retval = EXT2_ET_BAD_INODE_NUM;
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goto exit_inode;
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}
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bh = getblk(ctx, start, (*journal)->j_blocksize);
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if (!bh) {
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retval = EXT2_ET_NO_MEMORY;
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goto exit_inode;
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}
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(*journal)->j_sb_buffer = bh;
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(*journal)->j_superblock = (journal_superblock_t *)bh->b_data;
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return 0;
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exit_inode:
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ext2fs_free_mem((void **)&inode);
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exit_journal:
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ext2fs_free_mem((void **)journal);
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return retval;
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}
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static errcode_t e2fsck_journal_init_dev(e2fsck_t ctx,
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struct ext2_super_block *s,
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journal_t **journal)
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{
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struct buffer_head *bh;
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io_manager io_ptr;
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blk_t start;
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int retval;
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int blocksize = ctx->fs->blocksize;
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struct ext2_super_block jsuper;
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struct problem_context pctx;
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const char *journal_name;
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clear_problem_context(&pctx);
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journal_name = ctx->journal_name;
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if (!journal_name)
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journal_name = ext2fs_find_block_device(s->s_journal_dev);
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if (!journal_name) {
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fix_problem(ctx, PR_0_CANT_FIND_JOURNAL, &pctx);
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return EXT2_ET_LOAD_EXT_JOURNAL;
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}
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jfs_debug(1, "Using journal file %s\n", journal_name);
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#if 1
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io_ptr = unix_io_manager;
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#else
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io_ptr = test_io_manager;
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test_io_backing_manager = unix_io_manager;
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#endif
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retval = io_ptr->open(journal_name, IO_FLAG_RW, &ctx->journal_io);
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if (!ctx->journal_name)
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free((void *) journal_name);
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if (retval)
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return retval;
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io_channel_set_blksize(ctx->journal_io, blocksize);
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start = (blocksize == 1024) ? 1 : 0;
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bh = getblk(ctx, start, blocksize);
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if (!bh)
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return EXT2_ET_NO_MEMORY;
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ll_rw_block(READ, 1, &bh);
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if (bh->b_err)
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return bh->b_err;
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memcpy(&jsuper, start ? bh->b_data : bh->b_data + 1024,
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sizeof(jsuper));
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brelse(bh);
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#ifdef EXT2FS_ENABLE_SWAPFS
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if (jsuper.s_magic == ext2fs_swab16(EXT2_SUPER_MAGIC))
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ext2fs_swap_super(&jsuper);
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#endif
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if (jsuper.s_magic != EXT2_SUPER_MAGIC ||
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!(jsuper.s_feature_incompat & EXT3_FEATURE_INCOMPAT_JOURNAL_DEV)) {
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fix_problem(ctx, PR_0_EXT_JOURNAL_BAD_SUPER, &pctx);
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return EXT2_ET_LOAD_EXT_JOURNAL;
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}
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/* Make sure the journal UUID is correct */
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if (memcmp(jsuper.s_uuid, ctx->fs->super->s_journal_uuid,
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sizeof(jsuper.s_uuid))) {
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fix_problem(ctx, PR_0_JOURNAL_BAD_UUID, &pctx);
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return EXT2_ET_LOAD_EXT_JOURNAL;
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}
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*journal = e2fsck_allocate_memory(ctx, sizeof(journal_t), "journal");
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if (!*journal) {
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return EXT2_ET_NO_MEMORY;
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}
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(*journal)->j_dev = ctx;
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(*journal)->j_inode = NULL;
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(*journal)->j_blocksize = ctx->fs->blocksize;
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(*journal)->j_maxlen = jsuper.s_blocks_count;
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bh = getblk(ctx, start+1, (*journal)->j_blocksize);
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if (!bh) {
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retval = EXT2_ET_NO_MEMORY;
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goto errout;
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}
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(*journal)->j_sb_buffer = bh;
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(*journal)->j_superblock = (journal_superblock_t *)bh->b_data;
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return 0;
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errout:
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ext2fs_free_mem((void **)journal);
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return retval;
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}
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static errcode_t e2fsck_get_journal(e2fsck_t ctx, journal_t **journal)
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{
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struct ext2_super_block *sb = ctx->fs->super;
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if (uuid_is_null(sb->s_journal_uuid)) {
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if (!sb->s_journal_inum)
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return EXT2_ET_BAD_INODE_NUM;
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return e2fsck_journal_init_inode(ctx, sb, journal);
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} else {
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return e2fsck_journal_init_dev(ctx, sb, journal);
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}
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}
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static errcode_t e2fsck_journal_fix_bad_inode(e2fsck_t ctx,
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struct problem_context *pctx)
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{
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struct ext2_super_block *sb = ctx->fs->super;
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int recover = ctx->fs->super->s_feature_incompat &
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EXT3_FEATURE_INCOMPAT_RECOVER;
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int has_journal = ctx->fs->super->s_feature_compat &
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EXT3_FEATURE_COMPAT_HAS_JOURNAL;
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if (has_journal || sb->s_journal_inum) {
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/* The journal inode is bogus, remove and force full fsck */
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pctx->ino = sb->s_journal_inum;
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if (fix_problem(ctx, PR_0_JOURNAL_BAD_INODE, pctx)) {
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if (has_journal && sb->s_journal_inum)
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printf("*** ext3 journal has been deleted - "
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"filesystem is now ext2 only ***\n\n");
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sb->s_feature_compat &= ~EXT3_FEATURE_COMPAT_HAS_JOURNAL;
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sb->s_journal_inum = 0;
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ctx->flags |= E2F_FLAG_JOURNAL_INODE; /* FIXME: todo */
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e2fsck_clear_recover(ctx, 1);
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return 0;
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}
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return EXT2_ET_BAD_INODE_NUM;
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} else if (recover) {
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if (fix_problem(ctx, PR_0_JOURNAL_RECOVER_SET, pctx)) {
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e2fsck_clear_recover(ctx, 1);
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return 0;
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}
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return EXT2_ET_UNSUPP_FEATURE;
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}
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return 0;
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}
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static errcode_t e2fsck_journal_load(journal_t *journal)
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{
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e2fsck_t ctx = journal->j_dev;
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journal_superblock_t *jsb;
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struct buffer_head *jbh = journal->j_sb_buffer;
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struct problem_context pctx;
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clear_problem_context(&pctx);
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ll_rw_block(READ, 1, &jbh);
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if (jbh->b_err) {
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com_err(ctx->device_name, jbh->b_err,
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_("reading journal superblock\n"));
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return jbh->b_err;
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}
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jsb = journal->j_superblock;
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/* If we don't even have JFS_MAGIC, we probably have a wrong inode */
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if (jsb->s_header.h_magic != htonl(JFS_MAGIC_NUMBER))
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return e2fsck_journal_fix_bad_inode(ctx, &pctx);
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switch (ntohl(jsb->s_header.h_blocktype)) {
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case JFS_SUPERBLOCK_V1:
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journal->j_format_version = 1;
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break;
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case JFS_SUPERBLOCK_V2:
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journal->j_format_version = 2;
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if (ntohl(jsb->s_nr_users) > 1) {
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fix_problem(ctx, PR_0_JOURNAL_UNSUPP_MULTIFS, &pctx);
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return EXT2_ET_JOURNAL_UNSUPP_VERSION;
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}
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break;
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/*
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* These should never appear in a journal super block, so if
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* they do, the journal is badly corrupted.
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*/
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case JFS_DESCRIPTOR_BLOCK:
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case JFS_COMMIT_BLOCK:
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case JFS_REVOKE_BLOCK:
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return EXT2_ET_CORRUPT_SUPERBLOCK;
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/* If we don't understand the superblock major type, but there
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* is a magic number, then it is likely to be a new format we
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* just don't understand, so leave it alone. */
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default:
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return EXT2_ET_JOURNAL_UNSUPP_VERSION;
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}
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if (JFS_HAS_INCOMPAT_FEATURE(journal, ~JFS_KNOWN_INCOMPAT_FEATURES))
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return EXT2_ET_UNSUPP_FEATURE;
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if (JFS_HAS_RO_COMPAT_FEATURE(journal, ~JFS_KNOWN_ROCOMPAT_FEATURES))
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return EXT2_ET_RO_UNSUPP_FEATURE;
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/* We have now checked whether we know enough about the journal
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* format to be able to proceed safely, so any other checks that
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* fail we should attempt to recover from. */
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if (jsb->s_blocksize != htonl(journal->j_blocksize)) {
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com_err(ctx->program_name, EXT2_ET_CORRUPT_SUPERBLOCK,
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_("%s: no valid journal superblock found\n"),
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ctx->device_name);
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return EXT2_ET_CORRUPT_SUPERBLOCK;
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}
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if (ntohl(jsb->s_maxlen) < journal->j_maxlen)
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journal->j_maxlen = ntohl(jsb->s_maxlen);
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else if (ntohl(jsb->s_maxlen) > journal->j_maxlen) {
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com_err(ctx->program_name, EXT2_ET_CORRUPT_SUPERBLOCK,
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_("%s: journal too short\n"),
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ctx->device_name);
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return EXT2_ET_CORRUPT_SUPERBLOCK;
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}
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journal->j_tail_sequence = ntohl(jsb->s_sequence);
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journal->j_transaction_sequence = journal->j_tail_sequence;
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journal->j_tail = ntohl(jsb->s_start);
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journal->j_first = ntohl(jsb->s_first);
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journal->j_last = ntohl(jsb->s_maxlen);
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return 0;
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}
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static void e2fsck_journal_reset_super(e2fsck_t ctx, journal_superblock_t *jsb,
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journal_t *journal)
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{
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char *p;
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union {
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uuid_t uuid;
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__u32 val[4];
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} u;
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__u32 new_seq = 0;
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int i;
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/* Leave a valid existing V1 superblock signature alone.
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* Anything unrecognisable we overwrite with a new V2
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* signature. */
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if (jsb->s_header.h_magic != htonl(JFS_MAGIC_NUMBER) ||
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jsb->s_header.h_blocktype != htonl(JFS_SUPERBLOCK_V1)) {
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jsb->s_header.h_magic = htonl(JFS_MAGIC_NUMBER);
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jsb->s_header.h_blocktype = htonl(JFS_SUPERBLOCK_V2);
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}
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/* Zero out everything else beyond the superblock header */
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p = ((char *) jsb) + sizeof(journal_header_t);
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memset (p, 0, ctx->fs->blocksize-sizeof(journal_header_t));
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jsb->s_blocksize = htonl(ctx->fs->blocksize);
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jsb->s_maxlen = htonl(journal->j_maxlen);
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jsb->s_first = htonl(1);
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/* Initialize the journal sequence number so that there is "no"
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* chance we will find old "valid" transactions in the journal.
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* This avoids the need to zero the whole journal (slow to do,
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* and risky when we are just recovering the filesystem).
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*/
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uuid_generate(u.uuid);
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for (i = 0; i < 4; i ++)
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new_seq ^= u.val[i];
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jsb->s_sequence = htonl(new_seq);
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mark_buffer_dirty(journal->j_sb_buffer, 1);
|
|
ll_rw_block(WRITE, 1, &journal->j_sb_buffer);
|
|
}
|
|
|
|
static errcode_t e2fsck_journal_fix_corrupt_super(e2fsck_t ctx,
|
|
journal_t *journal,
|
|
struct problem_context *pctx)
|
|
{
|
|
struct ext2_super_block *sb = ctx->fs->super;
|
|
int recover = ctx->fs->super->s_feature_incompat &
|
|
EXT3_FEATURE_INCOMPAT_RECOVER;
|
|
|
|
pctx->num = journal->j_inode->i_ino;
|
|
|
|
if (sb->s_feature_compat & EXT3_FEATURE_COMPAT_HAS_JOURNAL) {
|
|
if (fix_problem(ctx, PR_0_JOURNAL_BAD_SUPER, pctx)) {
|
|
e2fsck_journal_reset_super(ctx, journal->j_superblock,
|
|
journal);
|
|
journal->j_transaction_sequence = 1;
|
|
e2fsck_clear_recover(ctx, recover);
|
|
return 0;
|
|
}
|
|
return EXT2_ET_CORRUPT_SUPERBLOCK;
|
|
} else if (e2fsck_journal_fix_bad_inode(ctx, pctx))
|
|
return EXT2_ET_CORRUPT_SUPERBLOCK;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void e2fsck_journal_release(e2fsck_t ctx, journal_t *journal,
|
|
int reset, int drop)
|
|
{
|
|
journal_superblock_t *jsb;
|
|
|
|
if (drop)
|
|
mark_buffer_clean(journal->j_sb_buffer);
|
|
else if (!(ctx->options & E2F_OPT_READONLY)) {
|
|
jsb = journal->j_superblock;
|
|
jsb->s_sequence = htonl(journal->j_transaction_sequence);
|
|
if (reset)
|
|
jsb->s_start = 0; /* this marks the journal as empty */
|
|
mark_buffer_dirty(journal->j_sb_buffer, 1);
|
|
}
|
|
brelse(journal->j_sb_buffer);
|
|
|
|
if (ctx->journal_io) {
|
|
if (ctx->fs && ctx->fs->io != ctx->journal_io)
|
|
io_channel_close(ctx->journal_io);
|
|
ctx->journal_io = 0;
|
|
}
|
|
|
|
if (journal->j_inode)
|
|
ext2fs_free_mem((void **)&journal->j_inode);
|
|
ext2fs_free_mem((void **)&journal);
|
|
}
|
|
|
|
/*
|
|
* This function makes sure that the superblock fields regarding the
|
|
* journal are consistent.
|
|
*/
|
|
int e2fsck_check_ext3_journal(e2fsck_t ctx)
|
|
{
|
|
struct ext2_super_block *sb = ctx->fs->super;
|
|
journal_t *journal;
|
|
int recover = ctx->fs->super->s_feature_incompat &
|
|
EXT3_FEATURE_INCOMPAT_RECOVER;
|
|
struct problem_context pctx;
|
|
int reset = 0, force_fsck = 0;
|
|
int retval;
|
|
|
|
/* If we don't have any journal features, don't do anything more */
|
|
if (!(sb->s_feature_compat & EXT3_FEATURE_COMPAT_HAS_JOURNAL) &&
|
|
!recover && sb->s_journal_inum == 0 && sb->s_journal_dev == 0 &&
|
|
uuid_is_null(sb->s_journal_uuid))
|
|
return 0;
|
|
|
|
clear_problem_context(&pctx);
|
|
pctx.num = sb->s_journal_inum;
|
|
|
|
retval = e2fsck_get_journal(ctx, &journal);
|
|
if (retval) {
|
|
if (retval == EXT2_ET_BAD_INODE_NUM)
|
|
return e2fsck_journal_fix_bad_inode(ctx, &pctx);
|
|
return retval;
|
|
}
|
|
|
|
retval = e2fsck_journal_load(journal);
|
|
if (retval) {
|
|
if ((retval == EXT2_ET_CORRUPT_SUPERBLOCK) ||
|
|
((retval == EXT2_ET_UNSUPP_FEATURE) &&
|
|
(!fix_problem(ctx, PR_0_JOURNAL_UNSUPP_INCOMPAT,
|
|
&pctx))) ||
|
|
((retval == EXT2_ET_RO_UNSUPP_FEATURE) &&
|
|
(!fix_problem(ctx, PR_0_JOURNAL_UNSUPP_ROCOMPAT,
|
|
&pctx))) ||
|
|
((retval == EXT2_ET_JOURNAL_UNSUPP_VERSION) &&
|
|
(!fix_problem(ctx, PR_0_JOURNAL_UNSUPP_VERSION, &pctx))))
|
|
retval = e2fsck_journal_fix_corrupt_super(ctx, journal,
|
|
&pctx);
|
|
e2fsck_journal_release(ctx, journal, 0, 1);
|
|
return retval;
|
|
}
|
|
|
|
/*
|
|
* We want to make the flags consistent here. We will not leave with
|
|
* needs_recovery set but has_journal clear. We can't get in a loop
|
|
* with -y, -n, or -p, only if a user isn't making up their mind.
|
|
*/
|
|
no_has_journal:
|
|
if (!(sb->s_feature_compat & EXT3_FEATURE_COMPAT_HAS_JOURNAL)) {
|
|
recover = sb->s_feature_incompat & EXT3_FEATURE_INCOMPAT_RECOVER;
|
|
pctx.str = "inode";
|
|
if (fix_problem(ctx, PR_0_JOURNAL_HAS_JOURNAL, &pctx)) {
|
|
if (recover &&
|
|
!fix_problem(ctx, PR_0_JOURNAL_RECOVER_SET, &pctx))
|
|
goto no_has_journal;
|
|
/*
|
|
* Need a full fsck if we are releasing a
|
|
* journal stored on a reserved inode.
|
|
*/
|
|
force_fsck = recover ||
|
|
(sb->s_journal_inum < EXT2_FIRST_INODE(sb));
|
|
/* Clear all of the journal fields */
|
|
sb->s_journal_inum = 0;
|
|
sb->s_journal_dev = 0;
|
|
memset(sb->s_journal_uuid, 0,
|
|
sizeof(sb->s_journal_uuid));
|
|
e2fsck_clear_recover(ctx, force_fsck);
|
|
} else if (!(ctx->options & E2F_OPT_READONLY)) {
|
|
sb->s_feature_compat |= EXT3_FEATURE_COMPAT_HAS_JOURNAL;
|
|
ext2fs_mark_super_dirty(ctx->fs);
|
|
}
|
|
}
|
|
|
|
if (sb->s_feature_compat & EXT3_FEATURE_COMPAT_HAS_JOURNAL &&
|
|
!(sb->s_feature_incompat & EXT3_FEATURE_INCOMPAT_RECOVER) &&
|
|
journal->j_superblock->s_start != 0) {
|
|
if (fix_problem(ctx, PR_0_JOURNAL_RESET_JOURNAL, &pctx)) {
|
|
reset = 1;
|
|
sb->s_state &= ~EXT2_VALID_FS;
|
|
ext2fs_mark_super_dirty(ctx->fs);
|
|
}
|
|
/*
|
|
* If the user answers no to the above question, we
|
|
* ignore the fact that journal apparently has data;
|
|
* accidentally replaying over valid data would be far
|
|
* worse than skipping a questionable recovery.
|
|
*
|
|
* XXX should we abort with a fatal error here? What
|
|
* will the ext3 kernel code do if a filesystem with
|
|
* !NEEDS_RECOVERY but with a non-zero
|
|
* journal->j_superblock->s_start is mounted?
|
|
*/
|
|
}
|
|
|
|
e2fsck_journal_release(ctx, journal, reset, 0);
|
|
return retval;
|
|
}
|
|
|
|
static errcode_t recover_ext3_journal(e2fsck_t ctx)
|
|
{
|
|
journal_t *journal;
|
|
int retval;
|
|
|
|
retval = e2fsck_get_journal(ctx, &journal);
|
|
if (retval)
|
|
return retval;
|
|
|
|
retval = e2fsck_journal_load(journal);
|
|
if (retval)
|
|
goto errout;
|
|
|
|
retval = journal_init_revoke(journal, 1024);
|
|
if (retval)
|
|
goto errout;
|
|
|
|
retval = -journal_recover(journal);
|
|
errout:
|
|
e2fsck_journal_release(ctx, journal, 1, 0);
|
|
return retval;
|
|
}
|
|
|
|
int e2fsck_run_ext3_journal(e2fsck_t ctx)
|
|
{
|
|
io_manager io_ptr = ctx->fs->io->manager;
|
|
int blocksize = ctx->fs->blocksize;
|
|
errcode_t retval, recover_retval;
|
|
|
|
printf(_("%s: recovering journal\n"), ctx->device_name);
|
|
if (ctx->options & E2F_OPT_READONLY) {
|
|
printf(_("%s: won't do journal recovery while read-only\n"),
|
|
ctx->device_name);
|
|
return EXT2_ET_FILE_RO;
|
|
}
|
|
|
|
if (ctx->fs->flags & EXT2_FLAG_DIRTY)
|
|
ext2fs_flush(ctx->fs); /* Force out any modifications */
|
|
|
|
recover_retval = recover_ext3_journal(ctx);
|
|
|
|
/*
|
|
* Reload the filesystem context to get up-to-date data from disk
|
|
* because journal recovery will change the filesystem under us.
|
|
*/
|
|
ext2fs_close(ctx->fs);
|
|
retval = ext2fs_open(ctx->filesystem_name, EXT2_FLAG_RW,
|
|
ctx->superblock, blocksize, io_ptr,
|
|
&ctx->fs);
|
|
|
|
if (retval) {
|
|
com_err(ctx->program_name, retval,
|
|
_("while trying to re-open %s"),
|
|
ctx->device_name);
|
|
fatal_error(ctx, 0);
|
|
}
|
|
ctx->fs->priv_data = ctx;
|
|
|
|
/* Set the superblock flags */
|
|
e2fsck_clear_recover(ctx, recover_retval);
|
|
return recover_retval;
|
|
}
|