journal.c revision d051521278790e5fc7d97d59bb3be6b662a76365
117390c047f5470eec005c5461a7926d03d6bbbe7Theodore Ts'o/* 217390c047f5470eec005c5461a7926d03d6bbbe7Theodore Ts'o * journal.c --- code for handling the "ext3" journal 33b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o * 43b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o * Copyright (C) 2000 Andreas Dilger 53b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o * Copyright (C) 2000 Theodore Ts'o 63b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o * 73b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o * Parts of the code are based on fs/jfs/journal.c by Stephen C. Tweedie 83b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o * Copyright (C) 1999 Red Hat Software 93b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o * 103b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o * This file may be redistributed under the terms of the 113b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o * GNU General Public License version 2 or at your discretion 123b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o * any later version. 1317390c047f5470eec005c5461a7926d03d6bbbe7Theodore Ts'o */ 1417390c047f5470eec005c5461a7926d03d6bbbe7Theodore Ts'o 153b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o#ifdef HAVE_SYS_MOUNT_H 163b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o#include <sys/mount.h> 173b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o#define MNT_FL (MS_MGC_VAL | MS_RDONLY) 183b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o#endif 193b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o#ifdef HAVE_SYS_STAT_H 203b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o#include <sys/stat.h> 213b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o#endif 2217390c047f5470eec005c5461a7926d03d6bbbe7Theodore Ts'o 2353ef44c40a3e425d2c700d8fd77a6b655aa121feTheodore Ts'o#define E2FSCK_INCLUDE_INLINE_FUNCS 240e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o#include "jfs_user.h" 253b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o#include "problem.h" 263b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o#include "uuid/uuid.h" 2717390c047f5470eec005c5461a7926d03d6bbbe7Theodore Ts'o 283b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o#ifdef JFS_DEBUG 293b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'ostatic int bh_count = 0; 300e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'oint journal_enable_debug = 0; 313b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o#endif 323b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 33b2f93192a1701855d4f5f05f0087c45e92a35681Theodore Ts'o/* Kernel compatibility functions for handling the journal. These allow us 34b2f93192a1701855d4f5f05f0087c45e92a35681Theodore Ts'o * to use the recovery.c file virtually unchanged from the kernel, so we 35b2f93192a1701855d4f5f05f0087c45e92a35681Theodore Ts'o * don't have to do much to keep kernel and user recovery in sync. 36b2f93192a1701855d4f5f05f0087c45e92a35681Theodore Ts'o */ 373b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'oint bmap(struct inode *inode, int block) 383b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o{ 393b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o int retval; 403b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o blk_t phys; 413b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 423b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o retval = ext2fs_bmap(inode->i_ctx->fs, inode->i_ino, &inode->i_ext2, 433b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o NULL, 0, block, &phys); 443b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 453b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (retval) 463b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o com_err(inode->i_ctx->device_name, retval, 473b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o _("bmap journal inode %ld, block %d\n"), 483b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o inode->i_ino, block); 493b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 503b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return phys; 513b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o} 523b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 533b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'ostruct buffer_head *getblk(e2fsck_t ctx, blk_t blocknr, int blocksize) 543b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o{ 553b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o struct buffer_head *bh; 563b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 573b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o bh = e2fsck_allocate_memory(ctx, sizeof(*bh), "block buffer"); 583b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (!bh) 593b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return NULL; 603b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 613b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o jfs_debug(4, "getblk for block %lu (%d bytes)(total %d)\n", 6253ef44c40a3e425d2c700d8fd77a6b655aa121feTheodore Ts'o (unsigned long) blocknr, blocksize, ++bh_count); 633b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 643b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o bh->b_ctx = ctx; 653b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o bh->b_size = blocksize; 663b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o bh->b_blocknr = blocknr; 673b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 683b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return bh; 693b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o} 703b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 710e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'ovoid ll_rw_block(int rw, int nr, struct buffer_head *bhp[]) 723b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o{ 733b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o int retval; 740e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o struct buffer_head *bh; 753b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 760e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o for (; nr > 0; --nr) { 770e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o bh = *bhp++; 780e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o if (rw == READ && !bh->b_uptodate) { 790e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o jfs_debug(3, "reading block %lu/%p\n", 8053ef44c40a3e425d2c700d8fd77a6b655aa121feTheodore Ts'o (unsigned long) bh->b_blocknr, (void *) bh); 810e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o retval = io_channel_read_blk(bh->b_ctx->fs->io, 820e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o bh->b_blocknr, 830e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o 1, bh->b_data); 840e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o if (retval) { 850e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o com_err(bh->b_ctx->device_name, retval, 860e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o "while reading block %ld\n", 870e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o bh->b_blocknr); 880e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o bh->b_err = retval; 890e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o continue; 900e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o } 910e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o bh->b_uptodate = 1; 920e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o } else if (rw == WRITE && bh->b_dirty) { 930e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o jfs_debug(3, "writing block %lu/%p\n", 9453ef44c40a3e425d2c700d8fd77a6b655aa121feTheodore Ts'o (unsigned long) bh->b_blocknr, (void *) bh); 950e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o retval = io_channel_write_blk(bh->b_ctx->fs->io, 960e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o bh->b_blocknr, 970e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o 1, bh->b_data); 980e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o if (retval) { 990e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o com_err(bh->b_ctx->device_name, retval, 1000e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o "while writing block %ld\n", 1010e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o bh->b_blocknr); 1020e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o bh->b_err = retval; 1030e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o continue; 1040e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o } 1050e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o bh->b_dirty = 0; 1060e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o bh->b_uptodate = 1; 1070e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o } else 1080e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o jfs_debug(3, "no-op %s for block %lu\n", 1090e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o rw == READ ? "read" : "write", 11053ef44c40a3e425d2c700d8fd77a6b655aa121feTheodore Ts'o (unsigned long) bh->b_blocknr); 1110e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o } 1123b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o} 1133b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 1143b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'ovoid mark_buffer_dirty(struct buffer_head *bh, int dummy) 1153b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o{ 1163b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o bh->b_dirty = dummy | 1; /* use dummy to avoid unused variable */ 1173b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o} 1183b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 1196a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'ostatic void mark_buffer_clean(struct buffer_head * bh) 1206a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o{ 1216a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o bh->b_dirty = 0; 1226a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o} 1236a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o 1243b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'ovoid brelse(struct buffer_head *bh) 1253b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o{ 1263b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (bh->b_dirty) 1270e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o ll_rw_block(WRITE, 1, &bh); 1283b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o jfs_debug(3, "freeing block %lu/%p (total %d)\n", 12953ef44c40a3e425d2c700d8fd77a6b655aa121feTheodore Ts'o (unsigned long) bh->b_blocknr, (void *) bh, --bh_count); 1303b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o ext2fs_free_mem((void **) &bh); 1313b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o} 1323b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 1333b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'oint buffer_uptodate(struct buffer_head *bh) 1343b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o{ 1353b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return bh->b_uptodate; 1363b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o} 1373b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 1383b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'ovoid wait_on_buffer(struct buffer_head *bh) 1393b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o{ 1403b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (!bh->b_uptodate) 1410e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o ll_rw_block(READ, 1, &bh); 1423b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o} 1433b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 14480bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o 1453b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'ostatic void e2fsck_clear_recover(e2fsck_t ctx, int error) 1463b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o{ 1475dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o ctx->fs->super->s_feature_incompat &= ~EXT3_FEATURE_INCOMPAT_RECOVER; 1483b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 1493b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o /* if we had an error doing journal recovery, we need a full fsck */ 1503b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (error) 1515dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o ctx->fs->super->s_state &= ~EXT2_VALID_FS; 1523b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o ext2fs_mark_super_dirty(ctx->fs); 1533b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o} 1543b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 1556a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'ostatic errcode_t e2fsck_journal_init_inode(e2fsck_t ctx, 1566a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o struct ext2_super_block *s, 1576a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o ext2_ino_t journal_inum, 1586a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o journal_t **journal) 1593b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o{ 1603b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o struct inode *inode; 1613b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o struct buffer_head *bh; 1623b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o blk_t start; 1633b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o int retval; 1643b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 16586c627ec1136446409a0170d439e60c148e6eb48Theodore Ts'o jfs_debug(1, "Using journal inode %u\n", journal_inum); 1663b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o *journal = e2fsck_allocate_memory(ctx, sizeof(journal_t), "journal"); 1673b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (!*journal) { 1683b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return EXT2_ET_NO_MEMORY; 1693b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } 1703b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 1713b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o inode = e2fsck_allocate_memory(ctx, sizeof(*inode), "journal inode"); 1723b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (!inode) { 1733b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o retval = EXT2_ET_NO_MEMORY; 1743b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o goto exit_journal; 1753b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } 1763b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 1773b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o inode->i_ctx = ctx; 1783b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o inode->i_ino = journal_inum; 1793b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o retval = ext2fs_read_inode(ctx->fs, journal_inum, &inode->i_ext2); 1803b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (retval) 1813b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o goto exit_inode; 1823b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 1833b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o (*journal)->j_dev = ctx; 1843b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o (*journal)->j_inode = inode; 1853b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o (*journal)->j_blocksize = ctx->fs->blocksize; 1863b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o (*journal)->j_maxlen = inode->i_ext2.i_size / (*journal)->j_blocksize; 1873b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 1883b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (!inode->i_ext2.i_links_count || 1893b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o !LINUX_S_ISREG(inode->i_ext2.i_mode) || 1903b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o (*journal)->j_maxlen < JFS_MIN_JOURNAL_BLOCKS || 1913b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o (start = bmap(inode, 0)) == 0) { 1923b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o retval = EXT2_ET_BAD_INODE_NUM; 1933b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o goto exit_inode; 1943b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } 1953b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 1963b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o bh = getblk(ctx, start, (*journal)->j_blocksize); 1973b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (!bh) { 1983b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o retval = EXT2_ET_NO_MEMORY; 1993b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o goto exit_inode; 2003b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } 2013b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o (*journal)->j_sb_buffer = bh; 2023b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o (*journal)->j_superblock = (journal_superblock_t *)bh->b_data; 2033b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 2043b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return 0; 2053b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 2063b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'oexit_inode: 2073b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o ext2fs_free_mem((void **)&inode); 2083b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'oexit_journal: 2093b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o ext2fs_free_mem((void **)journal); 2103b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 2113b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return retval; 2123b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o} 2133b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 2146a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'ostatic errcode_t e2fsck_get_journal(e2fsck_t ctx, journal_t **journal) 2153b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o{ 2163b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o char uuid_str[40]; 2173b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o struct problem_context pctx; 2185dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o struct ext2_super_block *sb = ctx->fs->super; 2193b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 2203b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o clear_problem_context(&pctx); 2213b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 2225dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o if (sb->s_feature_compat & EXT3_FEATURE_COMPAT_HAS_JOURNAL) { 2234e009f6a2e86fa4936a14330f379a8cfcbf0ce86Theodore Ts'o /* FIXME: check if dev is valid block dev, has a journal */ 2245dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o if (sb->s_journal_dev) { 2255dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o pctx.num = sb->s_journal_dev; 2263b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o /* this problem aborts on -y, -p, unsupported on -n */ 2273b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (!fix_problem(ctx, PR_0_JOURNAL_UNSUPP_DEV, &pctx)) 2283b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return EXT2_ET_UNSUPP_FEATURE; 2295dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o sb->s_journal_dev = 0; 2305dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o sb->s_state &= ~EXT2_VALID_FS; 2313b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o ext2fs_mark_super_dirty(ctx->fs); 2323b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } 233a9ca2016e14b5b56e5f0b61a73d52c4caee718bcTheodore Ts'o /* FIXME: check if UUID is valid block dev, has a journal */ 2345dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o if (!uuid_is_null(sb->s_journal_uuid)) { 2355dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o uuid_unparse(sb->s_journal_uuid, uuid_str); 2363b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o pctx.str = uuid_str; 2373b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o /* this problem aborts on -y, -p, unsupported on -n */ 2383b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (!fix_problem(ctx, PR_0_JOURNAL_UNSUPP_UUID, &pctx)) 2393b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return EXT2_ET_UNSUPP_FEATURE; 2405dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o uuid_clear(sb->s_journal_uuid); 2415dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o sb->s_state &= ~EXT2_VALID_FS; 2423b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o ext2fs_mark_super_dirty(ctx->fs); 2433b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } 2445dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o if (!sb->s_journal_inum) 2453b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return EXT2_ET_BAD_INODE_NUM; 2463b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } 2473b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 2485dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o if (sb->s_journal_dev) { 2495dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o pctx.num = sb->s_journal_dev; 2503b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (!fix_problem(ctx, PR_0_JOURNAL_BAD_DEV, &pctx)) 2513b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return EXT2_ET_UNSUPP_FEATURE; 2525dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o sb->s_journal_dev = 0; 2535dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o sb->s_state &= ~EXT2_VALID_FS; 2543b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o ext2fs_mark_super_dirty(ctx->fs); 2553b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } 2565dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o if (!uuid_is_null(sb->s_journal_uuid)) { 2575dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o uuid_unparse(sb->s_journal_uuid, uuid_str); 2583b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o pctx.str = uuid_str; 2593b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (!fix_problem(ctx, PR_0_JOURNAL_BAD_UUID, &pctx)) 2603b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return EXT2_ET_UNSUPP_FEATURE; 2615dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o uuid_clear(sb->s_journal_uuid); 2625dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o sb->s_state &= ~EXT2_VALID_FS; 2633b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o ext2fs_mark_super_dirty(ctx->fs); 2643b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } 2653b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 2665dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o return e2fsck_journal_init_inode(ctx, sb, sb->s_journal_inum, journal); 2673b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o} 2683b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 2696a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'ostatic errcode_t e2fsck_journal_fix_bad_inode(e2fsck_t ctx, 2706a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o struct problem_context *pctx) 2713b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o{ 2725dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o struct ext2_super_block *sb = ctx->fs->super; 2735dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o int recover = ctx->fs->super->s_feature_incompat & 2745dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o EXT3_FEATURE_INCOMPAT_RECOVER; 2755dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o int has_journal = ctx->fs->super->s_feature_compat & 2765dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o EXT3_FEATURE_COMPAT_HAS_JOURNAL; 2773b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 2785dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o if (has_journal || sb->s_journal_inum) { 2793b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o /* The journal inode is bogus, remove and force full fsck */ 2807e92dfae9e60947a20a2078b7871b073441dac44Theodore Ts'o pctx->ino = sb->s_journal_inum; 2813b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (fix_problem(ctx, PR_0_JOURNAL_BAD_INODE, pctx)) { 2825dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o if (has_journal && sb->s_journal_inum) 2833b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o printf("*** ext3 journal has been deleted - " 2843b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o "filesystem is now ext2 only ***\n\n"); 2855dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o sb->s_feature_compat &= ~EXT3_FEATURE_COMPAT_HAS_JOURNAL; 2865dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o sb->s_journal_inum = 0; 2873b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o e2fsck_clear_recover(ctx, 1); 2883b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return 0; 2893b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } 2903b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return EXT2_ET_BAD_INODE_NUM; 2913b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } else if (recover) { 2923b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (fix_problem(ctx, PR_0_JOURNAL_RECOVER_SET, pctx)) { 2933b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o e2fsck_clear_recover(ctx, 1); 2943b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return 0; 2953b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } 2963b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return EXT2_ET_UNSUPP_FEATURE; 2973b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } 2983b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return 0; 2993b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o} 3003b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 3016a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'ostatic errcode_t e2fsck_journal_load(journal_t *journal) 3023b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o{ 3033b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o e2fsck_t ctx = journal->j_dev; 3043b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o journal_superblock_t *jsb; 3053b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o struct buffer_head *jbh = journal->j_sb_buffer; 3063b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o struct problem_context pctx; 3073b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 3083b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o clear_problem_context(&pctx); 3093b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 3100e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o ll_rw_block(READ, 1, &jbh); 3113b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (jbh->b_err) { 3123b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o com_err(ctx->device_name, jbh->b_err, 3133b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o _("reading journal superblock\n")); 3143b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return jbh->b_err; 3153b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } 3163b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 3173b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o jsb = journal->j_superblock; 3183b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o /* If we don't even have JFS_MAGIC, we probably have a wrong inode */ 3193b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (jsb->s_header.h_magic != htonl(JFS_MAGIC_NUMBER)) 3203b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return e2fsck_journal_fix_bad_inode(ctx, &pctx); 3213b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 3220e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o switch (ntohl(jsb->s_header.h_blocktype)) { 3230e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o case JFS_SUPERBLOCK_V1: 3240e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o journal->j_format_version = 1; 3250e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o break; 3260e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o 3270e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o case JFS_SUPERBLOCK_V2: 3280e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o journal->j_format_version = 2; 3290e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o break; 3300e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o 3310e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o /* If we don't understand the superblock major type, but there 3320e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o * is a magic number, then it is likely to be a new format we 3330e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o * just don't understand, so leave it alone. */ 3340e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o default: 3350e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o com_err(ctx->program_name, EXT2_ET_UNSUPP_FEATURE, 3360e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o _("%s: journal has unrecognised format\n"), 3370e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o ctx->device_name); 3380e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o return EXT2_ET_UNSUPP_FEATURE; 3390e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o } 3400e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o 3410e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o if (JFS_HAS_INCOMPAT_FEATURE(journal, ~JFS_KNOWN_INCOMPAT_FEATURES)) { 3420e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o com_err(ctx->program_name, EXT2_ET_UNSUPP_FEATURE, 3430e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o _("%s: journal has incompatible features\n"), 3440e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o ctx->device_name); 3450e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o return EXT2_ET_UNSUPP_FEATURE; 3460e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o } 3470e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o 3480e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o if (JFS_HAS_RO_COMPAT_FEATURE(journal, ~JFS_KNOWN_ROCOMPAT_FEATURES)) { 3490e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o com_err(ctx->program_name, EXT2_ET_UNSUPP_FEATURE, 3500e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o _("%s: journal has readonly-incompatible features\n"), 3510e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o ctx->device_name); 3520e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o return EXT2_ET_RO_UNSUPP_FEATURE; 3533b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } 3543b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 3550e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o /* We have now checked whether we know enough about the journal 3560e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o * format to be able to proceed safely, so any other checks that 3570e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o * fail we should attempt to recover from. */ 3580e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o if (jsb->s_blocksize != htonl(journal->j_blocksize)) { 3590e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o com_err(ctx->program_name, EXT2_ET_CORRUPT_SUPERBLOCK, 3600e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o _("%s: no valid journal superblock found\n"), 3610e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o ctx->device_name); 3620e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o return EXT2_ET_CORRUPT_SUPERBLOCK; 3633b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } 3643b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 3653b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (ntohl(jsb->s_maxlen) < journal->j_maxlen) 3663b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o journal->j_maxlen = ntohl(jsb->s_maxlen); 3673b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o else if (ntohl(jsb->s_maxlen) > journal->j_maxlen) { 3680e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o com_err(ctx->program_name, EXT2_ET_CORRUPT_SUPERBLOCK, 3690e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o _("%s: journal too short\n"), 3700e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o ctx->device_name); 3713b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return EXT2_ET_CORRUPT_SUPERBLOCK; 3723b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } 3733b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 3743b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o journal->j_tail_sequence = ntohl(jsb->s_sequence); 375ecf1b7767e1772f4c6dba8f02026057ed05397bdTheodore Ts'o journal->j_transaction_sequence = journal->j_tail_sequence; 3763b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o journal->j_tail = ntohl(jsb->s_start); 3773b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o journal->j_first = ntohl(jsb->s_first); 3783b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o journal->j_last = ntohl(jsb->s_maxlen); 3793b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 3803b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return 0; 3813b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o} 3823b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 38353ef44c40a3e425d2c700d8fd77a6b655aa121feTheodore Ts'ostatic void e2fsck_journal_reset_super(e2fsck_t ctx, journal_superblock_t *jsb, 3846a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o journal_t *journal) 3853b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o{ 3860e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o char *p; 3870e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o 3880e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o /* Leave a valid existing V1 superblock signature alone. 3890e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o * Anything unrecognisable we overwrite with a new V2 3900e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o * signature. */ 3910e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o 3920e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o if (jsb->s_header.h_magic != htonl(JFS_MAGIC_NUMBER) || 3930e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o jsb->s_header.h_blocktype != htonl(JFS_SUPERBLOCK_V1)) { 3940e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o jsb->s_header.h_magic = htonl(JFS_MAGIC_NUMBER); 3950e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o jsb->s_header.h_blocktype = htonl(JFS_SUPERBLOCK_V2); 3960e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o } 3970e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o 3980e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o /* Zero out everything else beyond the superblock header */ 3990e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o 4000e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o p = ((char *) jsb) + sizeof(journal_header_t); 4010e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o memset (p, 0, ctx->fs->blocksize-sizeof(journal_header_t)); 4020e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o 4033b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o jsb->s_blocksize = htonl(ctx->fs->blocksize); 4040e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o jsb->s_maxlen = htonl(journal->j_maxlen); 4050e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o jsb->s_first = htonl(1); 4063b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o jsb->s_sequence = htonl(1); 4070e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o 4080e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o /* In theory we should also re-zero the entire journal here. 4090e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o * Initialising s_sequence to a random value would be a 4100e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o * reasonable compromise. */ 4110e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o 4120e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o ll_rw_block(WRITE, 1, &journal->j_sb_buffer); 4133b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o} 4143b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 4156a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'ostatic errcode_t e2fsck_journal_fix_corrupt_super(e2fsck_t ctx, 4166a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o journal_t *journal, 4176a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o struct problem_context *pctx) 4183b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o{ 4195dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o struct ext2_super_block *sb = ctx->fs->super; 4205dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o int recover = ctx->fs->super->s_feature_incompat & 4215dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o EXT3_FEATURE_INCOMPAT_RECOVER; 4223b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 4233b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o pctx->num = journal->j_inode->i_ino; 4243b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 4255dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o if (sb->s_feature_compat & EXT3_FEATURE_COMPAT_HAS_JOURNAL) { 4263b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (fix_problem(ctx, PR_0_JOURNAL_BAD_SUPER, pctx)) { 427b2f93192a1701855d4f5f05f0087c45e92a35681Theodore Ts'o e2fsck_journal_reset_super(ctx, journal->j_superblock, 428b2f93192a1701855d4f5f05f0087c45e92a35681Theodore Ts'o journal); 4293b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o journal->j_transaction_sequence = 1; 4303b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o e2fsck_clear_recover(ctx, recover); 4313b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return 0; 4323b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } 4333b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return EXT2_ET_CORRUPT_SUPERBLOCK; 4343b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } else if (e2fsck_journal_fix_bad_inode(ctx, pctx)) 4353b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return EXT2_ET_CORRUPT_SUPERBLOCK; 4363b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 4373b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return 0; 4383b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o} 4393b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 4406a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'ostatic void e2fsck_journal_release(e2fsck_t ctx, journal_t *journal, 4416a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o int reset, int drop) 4423b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o{ 4433b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o journal_superblock_t *jsb; 4443b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 4456a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o if (drop) 4466a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o mark_buffer_clean(journal->j_sb_buffer); 4476a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o else if (!(ctx->options & E2F_OPT_READONLY)) { 4483b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o jsb = journal->j_superblock; 4493b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o jsb->s_sequence = htonl(journal->j_transaction_sequence); 4503b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (reset) 4513b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o jsb->s_start = 0; /* this marks the journal as empty */ 4523b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o mark_buffer_dirty(journal->j_sb_buffer, 1); 4533b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } 4543b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o brelse(journal->j_sb_buffer); 4553b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 4563b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (journal->j_inode) 4576a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o ext2fs_free_mem((void **)&journal->j_inode); 4583b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o ext2fs_free_mem((void **)&journal); 4593b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o} 4603b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 4619b5657591b1db9b82fe433f3f90e496f3df6a851Theodore Ts'o/* 4629b5657591b1db9b82fe433f3f90e496f3df6a851Theodore Ts'o * This function makes sure that the superblock fields regarding the 4639b5657591b1db9b82fe433f3f90e496f3df6a851Theodore Ts'o * journal are consistent. 4649b5657591b1db9b82fe433f3f90e496f3df6a851Theodore Ts'o */ 4653b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'oint e2fsck_check_ext3_journal(e2fsck_t ctx) 4663b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o{ 4675dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o struct ext2_super_block *sb = ctx->fs->super; 4683b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o journal_t *journal; 4695dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o int recover = ctx->fs->super->s_feature_incompat & 4705dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o EXT3_FEATURE_INCOMPAT_RECOVER; 4713b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o struct problem_context pctx; 472d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o int reset = 0, force_fsck = 0; 4733b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o int retval; 4743b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 4753b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o /* If we don't have any journal features, don't do anything more */ 4765dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o if (!(sb->s_feature_compat & EXT3_FEATURE_COMPAT_HAS_JOURNAL) && 4775dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o !recover && sb->s_journal_inum == 0 && sb->s_journal_dev == 0 && 4785dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o uuid_is_null(sb->s_journal_uuid)) 4799b5657591b1db9b82fe433f3f90e496f3df6a851Theodore Ts'o return 0; 4803b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 481d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o#ifdef JFS_DEBUG /* Enabled by configure --enable-jfs-debug */ 482f43650c30821900a6a7c9bdba72bb5f6cee6c484Theodore Ts'o journal_enable_debug = 2; 483f43650c30821900a6a7c9bdba72bb5f6cee6c484Theodore Ts'o#endif 4843b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o clear_problem_context(&pctx); 4855dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o pctx.num = sb->s_journal_inum; 4863b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 4873b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o retval = e2fsck_get_journal(ctx, &journal); 4883b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (retval) { 4893b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (retval == EXT2_ET_BAD_INODE_NUM) 4903b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return e2fsck_journal_fix_bad_inode(ctx, &pctx); 4913b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return retval; 4923b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } 4933b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 4943b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o retval = e2fsck_journal_load(journal); 4953b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (retval) { 4963b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (retval == EXT2_ET_CORRUPT_SUPERBLOCK) 4976a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o retval = e2fsck_journal_fix_corrupt_super(ctx, journal, 4986a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o &pctx); 4996a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o e2fsck_journal_release(ctx, journal, 0, 1); 5003b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return retval; 5013b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } 5023b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 5033b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o /* 5043b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o * We want to make the flags consistent here. We will not leave with 5053b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o * needs_recovery set but has_journal clear. We can't get in a loop 5063b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o * with -y, -n, or -p, only if a user isn't making up their mind. 5073b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o */ 5083b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'ono_has_journal: 5095dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o if (!(sb->s_feature_compat & EXT3_FEATURE_COMPAT_HAS_JOURNAL)) { 5105dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o recover = sb->s_feature_incompat & EXT3_FEATURE_INCOMPAT_RECOVER; 5113b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o pctx.str = "inode"; 5123b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (fix_problem(ctx, PR_0_JOURNAL_HAS_JOURNAL, &pctx)) { 5133b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (recover && 5143b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o !fix_problem(ctx, PR_0_JOURNAL_RECOVER_SET, &pctx)) 5153b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o goto no_has_journal; 516d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o /* 517d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o * Need a full fsck if we are releasing a 5188c2dc52180373f4e7b12e92669db59b1a52e2153Theodore Ts'o * journal stored on a reserved inode. 519d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o */ 520d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o force_fsck = recover || 521d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o (sb->s_journal_inum < EXT2_FIRST_INODE(sb)); 522d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o /* Clear all of the journal fields */ 5235dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o sb->s_journal_inum = 0; 524d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o sb->s_journal_dev = 0; 525d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o memset(sb->s_journal_uuid, 0, 526d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o sizeof(sb->s_journal_uuid)); 527d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o e2fsck_clear_recover(ctx, force_fsck); 5283b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } else if (!(ctx->options & E2F_OPT_READONLY)) { 5295dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o sb->s_feature_compat |= EXT3_FEATURE_COMPAT_HAS_JOURNAL; 5303b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o ext2fs_mark_super_dirty(ctx->fs); 5313b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } 5323b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } 5333b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 5345dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o if (sb->s_feature_compat & EXT3_FEATURE_COMPAT_HAS_JOURNAL && 5355dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o !(sb->s_feature_incompat & EXT3_FEATURE_INCOMPAT_RECOVER) && 5363b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o journal->j_superblock->s_start != 0) { 537d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o if (fix_problem(ctx, PR_0_JOURNAL_RESET_JOURNAL, &pctx)) { 5383b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o reset = 1; 539d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o sb->s_state &= ~EXT2_VALID_FS; 540d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o ext2fs_mark_super_dirty(ctx->fs); 541d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o } 542d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o /* 543d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o * If the user answers no to the above question, we 544d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o * ignore the fact that journal apparently has data; 545d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o * accidentally replaying over valid data would be far 546d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o * worse than skipping a questionable recovery. 547d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o * 548d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o * XXX should we abort with a fatal error here? What 549d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o * will the ext3 kernel code do if a filesystem with 550d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o * !NEEDS_RECOVERY but with a non-zero 551d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o * journal->j_superblock->s_start is mounted? 552d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o */ 5533b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } 5543b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 5556a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o e2fsck_journal_release(ctx, journal, reset, 0); 5563b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return retval; 5573b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o} 5583b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 5596a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'ostatic errcode_t recover_ext3_journal(e2fsck_t ctx) 5603b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o{ 5613b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o journal_t *journal; 5623b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o int retval; 5633b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 5643b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o retval = e2fsck_get_journal(ctx, &journal); 5653b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (retval) 566ecf1b7767e1772f4c6dba8f02026057ed05397bdTheodore Ts'o return retval; 567ecf1b7767e1772f4c6dba8f02026057ed05397bdTheodore Ts'o 5683b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o retval = e2fsck_journal_load(journal); 5693b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (retval) 5706a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o goto errout; 5713b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 5720e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o retval = journal_init_revoke(journal, 1024); 5730e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o if (retval) 5746a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o goto errout; 5750e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o 5763b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o retval = -journal_recover(journal); 5776a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'oerrout: 5786a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o e2fsck_journal_release(ctx, journal, 1, 0); 5793b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return retval; 5803b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o} 5813b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 5823b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 58380bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o#if 0 5843b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o#define TEMPLATE "/tmp/ext3.XXXXXX" 58517390c047f5470eec005c5461a7926d03d6bbbe7Theodore Ts'o 58617390c047f5470eec005c5461a7926d03d6bbbe7Theodore Ts'o/* 58717390c047f5470eec005c5461a7926d03d6bbbe7Theodore Ts'o * This function attempts to mount and unmount an ext3 filesystem, 58817390c047f5470eec005c5461a7926d03d6bbbe7Theodore Ts'o * which is a cheap way to force the kernel to run the journal and 58980bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o * handle the recovery for us. 59017390c047f5470eec005c5461a7926d03d6bbbe7Theodore Ts'o */ 5916a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'ostatic errcode_t recover_ext3_journal_via_mount(e2fsck_t ctx) 59217390c047f5470eec005c5461a7926d03d6bbbe7Theodore Ts'o{ 5933b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o ext2_filsys fs = ctx->fs; 5943b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o char *dirlist[] = {"/mnt","/lost+found","/tmp","/root","/boot",0}; 59580bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o errcode_t retval, retval2; 5963b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o int count = 0; 5973b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o char template[] = TEMPLATE; 5983b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o struct stat buf; 59917390c047f5470eec005c5461a7926d03d6bbbe7Theodore Ts'o char *tmpdir; 60017390c047f5470eec005c5461a7926d03d6bbbe7Theodore Ts'o 6013b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (ctx->options & E2F_OPT_READONLY) { 6023b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o printf("%s: won't do journal recovery while read-only\n", 6033b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o ctx->device_name); 6043b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return EXT2_ET_FILE_RO; 6053b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } 6063b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 6073b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o printf(_("%s: trying for ext3 kernel journal recovery\n"), 6083b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o ctx->device_name); 60917390c047f5470eec005c5461a7926d03d6bbbe7Theodore Ts'o /* 61017390c047f5470eec005c5461a7926d03d6bbbe7Theodore Ts'o * First try to make a temporary directory. This may fail if 61117390c047f5470eec005c5461a7926d03d6bbbe7Theodore Ts'o * the root partition is still mounted read-only. 61217390c047f5470eec005c5461a7926d03d6bbbe7Theodore Ts'o */ 6133b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'onewtemp: 61417390c047f5470eec005c5461a7926d03d6bbbe7Theodore Ts'o tmpdir = mktemp(template); 61517390c047f5470eec005c5461a7926d03d6bbbe7Theodore Ts'o if (tmpdir) { 6163b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o jfs_debug(2, "trying %s as ext3 temp mount point\n", tmpdir); 61780bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o if (mkdir(template, 0700)) { 6183b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (errno == EROFS) { 6193b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o tmpdir = NULL; 6203b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o template[0] = '\0'; 6213b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } else if (errno == EEXIST && count++ < 10) { 6223b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o strcpy(template, TEMPLATE); 6233b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o goto newtemp; 62480bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o } 62580bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o return errno; 62617390c047f5470eec005c5461a7926d03d6bbbe7Theodore Ts'o } 6273b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } 6283b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 6293b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o /* 6303b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o * OK, creating a temporary directory didn't work. 6313b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o * Let's try a list of possible temporary mountpoints. 6323b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o */ 6333b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (!tmpdir) { 6343b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o dev_t rootdev; 6353b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o char **cpp, *dir; 6363b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 6373b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (stat("/", &buf)) 63880bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o return errno; 6393b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 6403b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o rootdev = buf.st_dev; 6413b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 64217390c047f5470eec005c5461a7926d03d6bbbe7Theodore Ts'o /* 6433b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o * Check that dir is on the same device as root (no other 6443b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o * filesystem is mounted there), and it's a directory. 64517390c047f5470eec005c5461a7926d03d6bbbe7Theodore Ts'o */ 6463b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o for (cpp = dirlist; (dir = *cpp); cpp++) 6473b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (stat(dir, &buf) == 0 && buf.st_dev == rootdev && 6483b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o S_ISDIR(buf.st_mode)) { 6493b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o tmpdir = dir; 65017390c047f5470eec005c5461a7926d03d6bbbe7Theodore Ts'o break; 6513b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } 6523b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } 6533b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 6543b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (tmpdir) { 6553b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o io_manager io_ptr = fs->io->manager; 6563b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o int blocksize = fs->blocksize; 6573b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 6583b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o jfs_debug(2, "using %s for ext3 mount\n", tmpdir); 6593b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o /* FIXME - need to handle loop devices here */ 66080bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o if (mount(ctx->device_name, tmpdir, "ext3", MNT_FL, NULL)) { 66180bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o retval = errno; 6623b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o com_err(ctx->program_name, errno, 6633b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o "when mounting %s", ctx->device_name); 6643b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (template[0]) 6653b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o rmdir(tmpdir); 66680bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o return retval; 66717390c047f5470eec005c5461a7926d03d6bbbe7Theodore Ts'o } 6683b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o /* 6693b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o * Now that it mounted cleanly, the filesystem will have been 6703b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o * recovered, so we can now unmount it. 6713b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o */ 67280bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o if (umount(tmpdir)) 67317390c047f5470eec005c5461a7926d03d6bbbe7Theodore Ts'o return errno; 6743b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 6753b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o /* 6763b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o * Remove the temporary directory, if it was created. 6773b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o */ 6783b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (template[0]) 6793b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o rmdir(tmpdir); 6803b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return 0; 68117390c047f5470eec005c5461a7926d03d6bbbe7Theodore Ts'o } 68280bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o} 68380bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o#endif 68480bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o 68580bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'oint e2fsck_run_ext3_journal(e2fsck_t ctx) 68680bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o{ 68780bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o io_manager io_ptr = ctx->fs->io->manager; 68880bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o int blocksize = ctx->fs->blocksize; 689ecf1b7767e1772f4c6dba8f02026057ed05397bdTheodore Ts'o errcode_t retval, recover_retval; 6908394902e04e64ed10ca81e869892c00143ee4931Theodore Ts'o 6918394902e04e64ed10ca81e869892c00143ee4931Theodore Ts'o printf(_("%s: recovering journal\n"), ctx->device_name); 692ecf1b7767e1772f4c6dba8f02026057ed05397bdTheodore Ts'o if (ctx->options & E2F_OPT_READONLY) { 6938394902e04e64ed10ca81e869892c00143ee4931Theodore Ts'o printf(_("%s: won't do journal recovery while read-only\n"), 694ecf1b7767e1772f4c6dba8f02026057ed05397bdTheodore Ts'o ctx->device_name); 695ecf1b7767e1772f4c6dba8f02026057ed05397bdTheodore Ts'o return EXT2_ET_FILE_RO; 696ecf1b7767e1772f4c6dba8f02026057ed05397bdTheodore Ts'o } 697ecf1b7767e1772f4c6dba8f02026057ed05397bdTheodore Ts'o 698d051521278790e5fc7d97d59bb3be6b662a76365Theodore Ts'o ext2fs_flush(fs); /* Force out any modifications */ 699d051521278790e5fc7d97d59bb3be6b662a76365Theodore Ts'o 700ecf1b7767e1772f4c6dba8f02026057ed05397bdTheodore Ts'o recover_retval = recover_ext3_journal(ctx); 70180bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o 70280bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o /* 70380bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o * Reload the filesystem context to get up-to-date data from disk 70480bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o * because journal recovery will change the filesystem under us. 70580bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o */ 70680bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o ext2fs_close(ctx->fs); 707ecf1b7767e1772f4c6dba8f02026057ed05397bdTheodore Ts'o retval = ext2fs_open(ctx->filesystem_name, EXT2_FLAG_RW, 70880bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o ctx->superblock, blocksize, io_ptr, 70980bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o &ctx->fs); 71080bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o 71180bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o if (retval) { 71280bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o com_err(ctx->program_name, retval, 71380bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o _("while trying to re-open %s"), 71480bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o ctx->device_name); 71599a2cc969fb47e8c87965aa9fb93cabf6fe4ac1eTheodore Ts'o fatal_error(ctx, 0); 71680bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o } 71780bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o ctx->fs->priv_data = ctx; 71817390c047f5470eec005c5461a7926d03d6bbbe7Theodore Ts'o 719ecf1b7767e1772f4c6dba8f02026057ed05397bdTheodore Ts'o /* Set the superblock flags */ 720ecf1b7767e1772f4c6dba8f02026057ed05397bdTheodore Ts'o e2fsck_clear_recover(ctx, recover_retval); 721ecf1b7767e1772f4c6dba8f02026057ed05397bdTheodore Ts'o return recover_retval; 72217390c047f5470eec005c5461a7926d03d6bbbe7Theodore Ts'o} 723