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 16b34cbddbd66baedc163d36dd281b63ef478f547aMatthias Andree#include <sys/param.h> 173b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o#include <sys/mount.h> 183b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o#define MNT_FL (MS_MGC_VAL | MS_RDONLY) 193b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o#endif 203b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o#ifdef HAVE_SYS_STAT_H 213b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o#include <sys/stat.h> 223b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o#endif 2317390c047f5470eec005c5461a7926d03d6bbbe7Theodore Ts'o 2453ef44c40a3e425d2c700d8fd77a6b655aa121feTheodore Ts'o#define E2FSCK_INCLUDE_INLINE_FUNCS 250e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o#include "jfs_user.h" 263b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o#include "problem.h" 273b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o#include "uuid/uuid.h" 2817390c047f5470eec005c5461a7926d03d6bbbe7Theodore Ts'o 298cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o#ifdef CONFIG_JBD_DEBUG /* Enabled by configure --enable-jfs-debug */ 303b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'ostatic int bh_count = 0; 313b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o#endif 323b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 33d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o/* 34d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o * Define USE_INODE_IO to use the inode_io.c / fileio.c codepaths. 35d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o * This creates a larger static binary, and a smaller binary using 36d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o * shared libraries. It's also probably slightly less CPU-efficient, 37d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o * which is why it's not on by default. But, it's a good way of 38d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o * testing the functions in inode_io.c and fileio.c. 39d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o */ 40d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o#undef USE_INODE_IO 41d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o 42b2f93192a1701855d4f5f05f0087c45e92a35681Theodore Ts'o/* Kernel compatibility functions for handling the journal. These allow us 43b2f93192a1701855d4f5f05f0087c45e92a35681Theodore Ts'o * to use the recovery.c file virtually unchanged from the kernel, so we 44b2f93192a1701855d4f5f05f0087c45e92a35681Theodore Ts'o * don't have to do much to keep kernel and user recovery in sync. 45b2f93192a1701855d4f5f05f0087c45e92a35681Theodore Ts'o */ 46e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrallint journal_bmap(journal_t *journal, blk64_t block, unsigned long long *phys) 473b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o{ 48d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o#ifdef USE_INODE_IO 49d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o *phys = block; 50d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o return 0; 51d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o#else 528cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o struct inode *inode = journal->j_inode; 538cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o errcode_t retval; 54e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall blk64_t pblk; 553b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 568cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o if (!inode) { 578cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o *phys = block; 588cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o return 0; 598cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o } 603b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 61e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall retval= ext2fs_bmap2(inode->i_ctx->fs, inode->i_ino, 62e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall &inode->i_ext2, NULL, 0, block, 0, &pblk); 638cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o *phys = pblk; 64e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall return (int) retval; 65d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o#endif 663b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o} 673b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 68e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrallstruct buffer_head *getblk(kdev_t kdev, blk64_t blocknr, int blocksize) 693b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o{ 703b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o struct buffer_head *bh; 71e35d548b59e24af9f7fc18396e8880df96d1bc51Theodore Ts'o int bufsize = sizeof(*bh) + kdev->k_ctx->fs->blocksize - 72e35d548b59e24af9f7fc18396e8880df96d1bc51Theodore Ts'o sizeof(bh->b_data); 733b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 74e35d548b59e24af9f7fc18396e8880df96d1bc51Theodore Ts'o bh = e2fsck_allocate_memory(kdev->k_ctx, bufsize, "block buffer"); 753b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (!bh) 763b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return NULL; 773b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 78185c4aeaf23d48375e3506218305031663203d0fTheodore Ts'o#ifdef CONFIG_JBD_DEBUG 79185c4aeaf23d48375e3506218305031663203d0fTheodore Ts'o if (journal_enable_debug >= 3) 80185c4aeaf23d48375e3506218305031663203d0fTheodore Ts'o bh_count++; 81185c4aeaf23d48375e3506218305031663203d0fTheodore Ts'o#endif 82e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall jfs_debug(4, "getblk for block %llu (%d bytes)(total %d)\n", 83e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall (unsigned long long) blocknr, blocksize, bh_count); 843b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 858cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o bh->b_ctx = kdev->k_ctx; 868cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o if (kdev->k_dev == K_DEV_FS) 878cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o bh->b_io = kdev->k_ctx->fs->io; 88efc6f628e15de95bcd13e4f0ee223cb42115d520Theodore Ts'o else 898cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o bh->b_io = kdev->k_ctx->journal_io; 903b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o bh->b_size = blocksize; 913b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o bh->b_blocknr = blocknr; 923b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 933b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return bh; 943b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o} 953b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 9693effaa456e490c6dfff08287c8f5c652cac8469Theodore Ts'ovoid sync_blockdev(kdev_t kdev) 9793effaa456e490c6dfff08287c8f5c652cac8469Theodore Ts'o{ 9893effaa456e490c6dfff08287c8f5c652cac8469Theodore Ts'o io_channel io; 9993effaa456e490c6dfff08287c8f5c652cac8469Theodore Ts'o 10093effaa456e490c6dfff08287c8f5c652cac8469Theodore Ts'o if (kdev->k_dev == K_DEV_FS) 10193effaa456e490c6dfff08287c8f5c652cac8469Theodore Ts'o io = kdev->k_ctx->fs->io; 102efc6f628e15de95bcd13e4f0ee223cb42115d520Theodore Ts'o else 10393effaa456e490c6dfff08287c8f5c652cac8469Theodore Ts'o io = kdev->k_ctx->journal_io; 10493effaa456e490c6dfff08287c8f5c652cac8469Theodore Ts'o 10593effaa456e490c6dfff08287c8f5c652cac8469Theodore Ts'o io_channel_flush(io); 10693effaa456e490c6dfff08287c8f5c652cac8469Theodore Ts'o} 10793effaa456e490c6dfff08287c8f5c652cac8469Theodore Ts'o 1080e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'ovoid ll_rw_block(int rw, int nr, struct buffer_head *bhp[]) 1093b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o{ 110e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall errcode_t retval; 1110e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o struct buffer_head *bh; 1123b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 1130e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o for (; nr > 0; --nr) { 1140e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o bh = *bhp++; 1150e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o if (rw == READ && !bh->b_uptodate) { 116e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall jfs_debug(3, "reading block %llu/%p\n", 117e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall bh->b_blocknr, (void *) bh); 118e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall retval = io_channel_read_blk64(bh->b_io, 1190e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o bh->b_blocknr, 1200e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o 1, bh->b_data); 1210e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o if (retval) { 1220e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o com_err(bh->b_ctx->device_name, retval, 123e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall "while reading block %llu\n", 124e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall bh->b_blocknr); 125e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall bh->b_err = (int) retval; 1260e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o continue; 1270e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o } 1280e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o bh->b_uptodate = 1; 1290e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o } else if (rw == WRITE && bh->b_dirty) { 130e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall jfs_debug(3, "writing block %llu/%p\n", 131e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall bh->b_blocknr, 132e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall (void *) bh); 133e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall retval = io_channel_write_blk64(bh->b_io, 1340e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o bh->b_blocknr, 1350e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o 1, bh->b_data); 1360e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o if (retval) { 1370e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o com_err(bh->b_ctx->device_name, retval, 138e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall "while writing block %llu\n", 139e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall bh->b_blocknr); 140e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall bh->b_err = (int) retval; 1410e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o continue; 1420e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o } 1430e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o bh->b_dirty = 0; 1440e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o bh->b_uptodate = 1; 145b969b1b8a5c13992cadb026114731958644540d8Matthias Andree } else { 146e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall jfs_debug(3, "no-op %s for block %llu\n", 147efc6f628e15de95bcd13e4f0ee223cb42115d520Theodore Ts'o rw == READ ? "read" : "write", 148e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall bh->b_blocknr); 149b969b1b8a5c13992cadb026114731958644540d8Matthias Andree } 1500e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o } 1513b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o} 1523b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 1538cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'ovoid mark_buffer_dirty(struct buffer_head *bh) 1543b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o{ 1558cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o bh->b_dirty = 1; 1563b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o} 1573b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 1586a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'ostatic void mark_buffer_clean(struct buffer_head * bh) 1596a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o{ 1606a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o bh->b_dirty = 0; 1616a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o} 1626a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o 1633b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'ovoid brelse(struct buffer_head *bh) 1643b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o{ 1653b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (bh->b_dirty) 1660e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o ll_rw_block(WRITE, 1, &bh); 167e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall jfs_debug(3, "freeing block %llu/%p (total %d)\n", 168e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall bh->b_blocknr, (void *) bh, --bh_count); 169c4e3d3f374b409500e3dd05c0b0eca6ac98a6b4eTheodore Ts'o ext2fs_free_mem(&bh); 1703b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o} 1713b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 1723b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'oint buffer_uptodate(struct buffer_head *bh) 1733b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o{ 1743b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return bh->b_uptodate; 1753b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o} 1763b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 17715986f7931e1fe65621b4defb5522c9bf8da76efTheodore Ts'ovoid mark_buffer_uptodate(struct buffer_head *bh, int val) 17815986f7931e1fe65621b4defb5522c9bf8da76efTheodore Ts'o{ 17915986f7931e1fe65621b4defb5522c9bf8da76efTheodore Ts'o bh->b_uptodate = val; 18015986f7931e1fe65621b4defb5522c9bf8da76efTheodore Ts'o} 18115986f7931e1fe65621b4defb5522c9bf8da76efTheodore Ts'o 1823b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'ovoid wait_on_buffer(struct buffer_head *bh) 1833b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o{ 1843b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (!bh->b_uptodate) 1850e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o ll_rw_block(READ, 1, &bh); 1863b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o} 1873b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 18880bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o 1893b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'ostatic void e2fsck_clear_recover(e2fsck_t ctx, int error) 1903b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o{ 1915dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o ctx->fs->super->s_feature_incompat &= ~EXT3_FEATURE_INCOMPAT_RECOVER; 1923b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 1933b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o /* if we had an error doing journal recovery, we need a full fsck */ 1943b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (error) 1955dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o ctx->fs->super->s_state &= ~EXT2_VALID_FS; 1963b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o ext2fs_mark_super_dirty(ctx->fs); 1973b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o} 1983b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 199051afbe0d7f49429c26d2a7a33f1f3857d07c3d0Theodore Ts'o/* 200051afbe0d7f49429c26d2a7a33f1f3857d07c3d0Theodore Ts'o * This is a helper function to check the validity of the journal. 201051afbe0d7f49429c26d2a7a33f1f3857d07c3d0Theodore Ts'o */ 202051afbe0d7f49429c26d2a7a33f1f3857d07c3d0Theodore Ts'ostruct process_block_struct { 203051afbe0d7f49429c26d2a7a33f1f3857d07c3d0Theodore Ts'o e2_blkcnt_t last_block; 204051afbe0d7f49429c26d2a7a33f1f3857d07c3d0Theodore Ts'o}; 205051afbe0d7f49429c26d2a7a33f1f3857d07c3d0Theodore Ts'o 206051afbe0d7f49429c26d2a7a33f1f3857d07c3d0Theodore Ts'ostatic int process_journal_block(ext2_filsys fs, 207e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall blk64_t *block_nr, 208051afbe0d7f49429c26d2a7a33f1f3857d07c3d0Theodore Ts'o e2_blkcnt_t blockcnt, 209e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall blk64_t ref_block EXT2FS_ATTR((unused)), 210051afbe0d7f49429c26d2a7a33f1f3857d07c3d0Theodore Ts'o int ref_offset EXT2FS_ATTR((unused)), 211051afbe0d7f49429c26d2a7a33f1f3857d07c3d0Theodore Ts'o void *priv_data) 212051afbe0d7f49429c26d2a7a33f1f3857d07c3d0Theodore Ts'o{ 213051afbe0d7f49429c26d2a7a33f1f3857d07c3d0Theodore Ts'o struct process_block_struct *p; 214e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall blk64_t blk = *block_nr; 215051afbe0d7f49429c26d2a7a33f1f3857d07c3d0Theodore Ts'o 216051afbe0d7f49429c26d2a7a33f1f3857d07c3d0Theodore Ts'o p = (struct process_block_struct *) priv_data; 217051afbe0d7f49429c26d2a7a33f1f3857d07c3d0Theodore Ts'o 2185750e5f9246ead0bc2af7da0cb5bcdfc916cace6Eric Sandeen if (!blk || blk < fs->super->s_first_data_block || 219e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall blk >= ext2fs_blocks_count(fs->super)) 220051afbe0d7f49429c26d2a7a33f1f3857d07c3d0Theodore Ts'o return BLOCK_ABORT; 221051afbe0d7f49429c26d2a7a33f1f3857d07c3d0Theodore Ts'o 222051afbe0d7f49429c26d2a7a33f1f3857d07c3d0Theodore Ts'o if (blockcnt >= 0) 223051afbe0d7f49429c26d2a7a33f1f3857d07c3d0Theodore Ts'o p->last_block = blockcnt; 224051afbe0d7f49429c26d2a7a33f1f3857d07c3d0Theodore Ts'o return 0; 225051afbe0d7f49429c26d2a7a33f1f3857d07c3d0Theodore Ts'o} 226051afbe0d7f49429c26d2a7a33f1f3857d07c3d0Theodore Ts'o 227d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'ostatic errcode_t e2fsck_get_journal(e2fsck_t ctx, journal_t **ret_journal) 2283b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o{ 229051afbe0d7f49429c26d2a7a33f1f3857d07c3d0Theodore Ts'o struct process_block_struct pb; 230d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o struct ext2_super_block *sb = ctx->fs->super; 231d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o struct ext2_super_block jsuper; 232d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o struct problem_context pctx; 233d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o struct buffer_head *bh; 234d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o struct inode *j_inode = NULL; 235d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o struct kdev_s *dev_fs = NULL, *dev_journal; 2363e69906495d5898849a6154b0311b5d4a84a27aeTheodore Ts'o const char *journal_name = 0; 237d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o journal_t *journal = NULL; 2383e69906495d5898849a6154b0311b5d4a84a27aeTheodore Ts'o errcode_t retval = 0; 2393e69906495d5898849a6154b0311b5d4a84a27aeTheodore Ts'o io_manager io_ptr = 0; 240e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall unsigned long long start = 0; 241d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o int ext_journal = 0; 242a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o int tried_backup_jnl = 0; 2432bfe0bdba37bfd0e4378e855377ebaa823846ea3Brian Behlendorf 244d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o clear_problem_context(&pctx); 2452bfe0bdba37bfd0e4378e855377ebaa823846ea3Brian Behlendorf 246d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o journal = e2fsck_allocate_memory(ctx, sizeof(journal_t), "journal"); 247d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o if (!journal) { 2483b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return EXT2_ET_NO_MEMORY; 2493b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } 2503b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 2518cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o dev_fs = e2fsck_allocate_memory(ctx, 2*sizeof(struct kdev_s), "kdev"); 2528cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o if (!dev_fs) { 2538cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o retval = EXT2_ET_NO_MEMORY; 2548cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o goto errout; 2558cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o } 2568cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o dev_journal = dev_fs+1; 2572bfe0bdba37bfd0e4378e855377ebaa823846ea3Brian Behlendorf 2588cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o dev_fs->k_ctx = dev_journal->k_ctx = ctx; 2598cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o dev_fs->k_dev = K_DEV_FS; 2608cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o dev_journal->k_dev = K_DEV_JOURNAL; 2612bfe0bdba37bfd0e4378e855377ebaa823846ea3Brian Behlendorf 262d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o journal->j_dev = dev_journal; 263d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o journal->j_fs_dev = dev_fs; 264d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o journal->j_inode = NULL; 265d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o journal->j_blocksize = ctx->fs->blocksize; 2663b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 267d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o if (uuid_is_null(sb->s_journal_uuid)) { 2682bfe0bdba37bfd0e4378e855377ebaa823846ea3Brian Behlendorf if (!sb->s_journal_inum) { 2692bfe0bdba37bfd0e4378e855377ebaa823846ea3Brian Behlendorf retval = EXT2_ET_BAD_INODE_NUM; 2702bfe0bdba37bfd0e4378e855377ebaa823846ea3Brian Behlendorf goto errout; 2712bfe0bdba37bfd0e4378e855377ebaa823846ea3Brian Behlendorf } 272d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o j_inode = e2fsck_allocate_memory(ctx, sizeof(*j_inode), 273d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o "journal inode"); 274d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o if (!j_inode) { 275d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o retval = EXT2_ET_NO_MEMORY; 276d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o goto errout; 277d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o } 2783b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 279d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o j_inode->i_ctx = ctx; 280d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o j_inode->i_ino = sb->s_journal_inum; 2812bfe0bdba37bfd0e4378e855377ebaa823846ea3Brian Behlendorf 282d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o if ((retval = ext2fs_read_inode(ctx->fs, 283d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o sb->s_journal_inum, 284a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o &j_inode->i_ext2))) { 285a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o try_backup_journal: 286a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o if (sb->s_jnl_backup_type != EXT3_JNL_BACKUP_BLOCKS || 287a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o tried_backup_jnl) 288a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o goto errout; 289a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o memset(&j_inode->i_ext2, 0, sizeof(struct ext2_inode)); 290efc6f628e15de95bcd13e4f0ee223cb42115d520Theodore Ts'o memcpy(&j_inode->i_ext2.i_block[0], sb->s_jnl_blocks, 291a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o EXT2_N_BLOCKS*4); 292e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall j_inode->i_ext2.i_size_high = sb->s_jnl_blocks[15]; 293a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o j_inode->i_ext2.i_size = sb->s_jnl_blocks[16]; 294a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o j_inode->i_ext2.i_links_count = 1; 295a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o j_inode->i_ext2.i_mode = LINUX_S_IFREG | 0600; 296051afbe0d7f49429c26d2a7a33f1f3857d07c3d0Theodore Ts'o e2fsck_use_inode_shortcuts(ctx, 1); 297051afbe0d7f49429c26d2a7a33f1f3857d07c3d0Theodore Ts'o ctx->stashed_ino = j_inode->i_ino; 298051afbe0d7f49429c26d2a7a33f1f3857d07c3d0Theodore Ts'o ctx->stashed_inode = &j_inode->i_ext2; 299a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o tried_backup_jnl++; 300a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o } 301d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o if (!j_inode->i_ext2.i_links_count || 302d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o !LINUX_S_ISREG(j_inode->i_ext2.i_mode)) { 303d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o retval = EXT2_ET_NO_JOURNAL; 304a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o goto try_backup_journal; 305d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o } 306e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall if (EXT2_I_SIZE(&j_inode->i_ext2) / journal->j_blocksize < 307d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o JFS_MIN_JOURNAL_BLOCKS) { 308d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o retval = EXT2_ET_JOURNAL_TOO_SMALL; 309a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o goto try_backup_journal; 310a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o } 311051afbe0d7f49429c26d2a7a33f1f3857d07c3d0Theodore Ts'o pb.last_block = -1; 312e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall retval = ext2fs_block_iterate3(ctx->fs, j_inode->i_ino, 313efc6f628e15de95bcd13e4f0ee223cb42115d520Theodore Ts'o BLOCK_FLAG_HOLE, 0, 314051afbe0d7f49429c26d2a7a33f1f3857d07c3d0Theodore Ts'o process_journal_block, &pb); 315e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall if ((pb.last_block + 1) * ctx->fs->blocksize < 316e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall (int) EXT2_I_SIZE(&j_inode->i_ext2)) { 317051afbe0d7f49429c26d2a7a33f1f3857d07c3d0Theodore Ts'o retval = EXT2_ET_JOURNAL_TOO_SMALL; 318051afbe0d7f49429c26d2a7a33f1f3857d07c3d0Theodore Ts'o goto try_backup_journal; 319d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o } 320ded28ac2ab67300f39783184a8f8930b548fc5f0Kalpak Shah if (tried_backup_jnl && !(ctx->options & E2F_OPT_READONLY)) { 321ded28ac2ab67300f39783184a8f8930b548fc5f0Kalpak Shah retval = ext2fs_write_inode(ctx->fs, sb->s_journal_inum, 322ded28ac2ab67300f39783184a8f8930b548fc5f0Kalpak Shah &j_inode->i_ext2); 323ded28ac2ab67300f39783184a8f8930b548fc5f0Kalpak Shah if (retval) 324ded28ac2ab67300f39783184a8f8930b548fc5f0Kalpak Shah goto errout; 325ded28ac2ab67300f39783184a8f8930b548fc5f0Kalpak Shah } 326ded28ac2ab67300f39783184a8f8930b548fc5f0Kalpak Shah 327e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall journal->j_maxlen = EXT2_I_SIZE(&j_inode->i_ext2) / 328e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall journal->j_blocksize; 3293b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 330d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o#ifdef USE_INODE_IO 331a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o retval = ext2fs_inode_io_intern2(ctx->fs, sb->s_journal_inum, 332a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o &j_inode->i_ext2, 333a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o &journal_name); 334d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o if (retval) 335d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o goto errout; 3363b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 337d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o io_ptr = inode_io_manager; 338d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o#else 339d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o journal->j_inode = j_inode; 340d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o ctx->journal_io = ctx->fs->io; 341e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall if ((retval = (errcode_t) journal_bmap(journal, 0, &start)) != 0) 342d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o goto errout; 343d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o#endif 344d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o } else { 345d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o ext_journal = 1; 346f364093b1956def0b0f1d037852cbb645284d5f2Theodore Ts'o if (!ctx->journal_name) { 347f364093b1956def0b0f1d037852cbb645284d5f2Theodore Ts'o char uuid[37]; 348f364093b1956def0b0f1d037852cbb645284d5f2Theodore Ts'o 349f364093b1956def0b0f1d037852cbb645284d5f2Theodore Ts'o uuid_unparse(sb->s_journal_uuid, uuid); 350f364093b1956def0b0f1d037852cbb645284d5f2Theodore Ts'o ctx->journal_name = blkid_get_devname(ctx->blkid, 351f364093b1956def0b0f1d037852cbb645284d5f2Theodore Ts'o "UUID", uuid); 352f364093b1956def0b0f1d037852cbb645284d5f2Theodore Ts'o if (!ctx->journal_name) 353f364093b1956def0b0f1d037852cbb645284d5f2Theodore Ts'o ctx->journal_name = blkid_devno_to_devname(sb->s_journal_dev); 354d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o } 355f364093b1956def0b0f1d037852cbb645284d5f2Theodore Ts'o journal_name = ctx->journal_name; 3562bfe0bdba37bfd0e4378e855377ebaa823846ea3Brian Behlendorf 357d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o if (!journal_name) { 358d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o fix_problem(ctx, PR_0_CANT_FIND_JOURNAL, &pctx); 3592bfe0bdba37bfd0e4378e855377ebaa823846ea3Brian Behlendorf retval = EXT2_ET_LOAD_EXT_JOURNAL; 3602bfe0bdba37bfd0e4378e855377ebaa823846ea3Brian Behlendorf goto errout; 361d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o } 3622bfe0bdba37bfd0e4378e855377ebaa823846ea3Brian Behlendorf 363d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o jfs_debug(1, "Using journal file %s\n", journal_name); 364d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o io_ptr = unix_io_manager; 3653b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } 3663b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 367d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o#if 0 368d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o test_io_backing_manager = io_ptr; 369adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o io_ptr = test_io_manager; 370adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o#endif 371d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o#ifndef USE_INODE_IO 372d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o if (ext_journal) 373d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o#endif 374e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall { 375e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall int flags = IO_FLAG_RW; 376e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall if (!(ctx->mount_flags & EXT2_MF_ISROOT && 377e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall ctx->mount_flags & EXT2_MF_READONLY)) 378e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall flags |= IO_FLAG_EXCLUSIVE; 379e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall if ((ctx->mount_flags & EXT2_MF_READONLY) && 380e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall (ctx->options & E2F_OPT_FORCE)) 381e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall flags &= ~IO_FLAG_EXCLUSIVE; 382e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall 383e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall 384e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall retval = io_ptr->open(journal_name, flags, 385d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o &ctx->journal_io); 386e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall } 3876d222f3217b11c9b27f92b4aafe47bfeb59b81faTheodore Ts'o if (retval) 388d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o goto errout; 389adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o 390d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o io_channel_set_blksize(ctx->journal_io, ctx->fs->blocksize); 391d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o 392d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o if (ext_journal) { 393e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall blk64_t maxlen; 394e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall 395d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o if (ctx->fs->blocksize == 1024) 396d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o start = 1; 397d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o bh = getblk(dev_journal, start, ctx->fs->blocksize); 398d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o if (!bh) { 399d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o retval = EXT2_ET_NO_MEMORY; 400d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o goto errout; 401d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o } 402d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o ll_rw_block(READ, 1, &bh); 4032aa362f54a9a486ffd495028b95532897551d619Theodore Ts'o if ((retval = bh->b_err) != 0) { 4042aa362f54a9a486ffd495028b95532897551d619Theodore Ts'o brelse(bh); 405d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o goto errout; 4062aa362f54a9a486ffd495028b95532897551d619Theodore Ts'o } 407d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o memcpy(&jsuper, start ? bh->b_data : bh->b_data + 1024, 408d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o sizeof(jsuper)); 409d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o brelse(bh); 4102eae093081a097a0a611fe2817e1533825dfdd86Theodore Ts'o#ifdef WORDS_BIGENDIAN 411efc6f628e15de95bcd13e4f0ee223cb42115d520Theodore Ts'o if (jsuper.s_magic == ext2fs_swab16(EXT2_SUPER_MAGIC)) 412d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o ext2fs_swap_super(&jsuper); 413adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o#endif 414d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o if (jsuper.s_magic != EXT2_SUPER_MAGIC || 415d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o !(jsuper.s_feature_incompat & EXT3_FEATURE_INCOMPAT_JOURNAL_DEV)) { 416d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o fix_problem(ctx, PR_0_EXT_JOURNAL_BAD_SUPER, &pctx); 417d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o retval = EXT2_ET_LOAD_EXT_JOURNAL; 418d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o goto errout; 419d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o } 420d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o /* Make sure the journal UUID is correct */ 421d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o if (memcmp(jsuper.s_uuid, ctx->fs->super->s_journal_uuid, 422d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o sizeof(jsuper.s_uuid))) { 423d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o fix_problem(ctx, PR_0_JOURNAL_BAD_UUID, &pctx); 424d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o retval = EXT2_ET_LOAD_EXT_JOURNAL; 425d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o goto errout; 426d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o } 4272bfe0bdba37bfd0e4378e855377ebaa823846ea3Brian Behlendorf 428e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall maxlen = ext2fs_blocks_count(&jsuper); 429e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall journal->j_maxlen = (maxlen < 1ULL << 32) ? maxlen : (1ULL << 32) - 1; 430d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o start++; 4313b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } 4323b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 433d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o if (!(bh = getblk(dev_journal, start, journal->j_blocksize))) { 434adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o retval = EXT2_ET_NO_MEMORY; 435adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o goto errout; 436adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o } 4372bfe0bdba37bfd0e4378e855377ebaa823846ea3Brian Behlendorf 438d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o journal->j_sb_buffer = bh; 439d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o journal->j_superblock = (journal_superblock_t *)bh->b_data; 4402bfe0bdba37bfd0e4378e855377ebaa823846ea3Brian Behlendorf 441d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o#ifdef USE_INODE_IO 442d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o if (j_inode) 443c4e3d3f374b409500e3dd05c0b0eca6ac98a6b4eTheodore Ts'o ext2fs_free_mem(&j_inode); 444d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o#endif 445d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o 446d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o *ret_journal = journal; 447051afbe0d7f49429c26d2a7a33f1f3857d07c3d0Theodore Ts'o e2fsck_use_inode_shortcuts(ctx, 0); 448adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o return 0; 449adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o 450adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'oerrout: 451051afbe0d7f49429c26d2a7a33f1f3857d07c3d0Theodore Ts'o e2fsck_use_inode_shortcuts(ctx, 0); 452d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o if (dev_fs) 453c4e3d3f374b409500e3dd05c0b0eca6ac98a6b4eTheodore Ts'o ext2fs_free_mem(&dev_fs); 454d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o if (j_inode) 455c4e3d3f374b409500e3dd05c0b0eca6ac98a6b4eTheodore Ts'o ext2fs_free_mem(&j_inode); 456d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o if (journal) 457c4e3d3f374b409500e3dd05c0b0eca6ac98a6b4eTheodore Ts'o ext2fs_free_mem(&journal); 458adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o return retval; 4593b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o} 4603b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 4616a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'ostatic errcode_t e2fsck_journal_fix_bad_inode(e2fsck_t ctx, 4626a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o struct problem_context *pctx) 4633b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o{ 4645dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o struct ext2_super_block *sb = ctx->fs->super; 4655dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o int recover = ctx->fs->super->s_feature_incompat & 4665dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o EXT3_FEATURE_INCOMPAT_RECOVER; 4675dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o int has_journal = ctx->fs->super->s_feature_compat & 4685dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o EXT3_FEATURE_COMPAT_HAS_JOURNAL; 4693b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 4705dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o if (has_journal || sb->s_journal_inum) { 4713b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o /* The journal inode is bogus, remove and force full fsck */ 4727e92dfae9e60947a20a2078b7871b073441dac44Theodore Ts'o pctx->ino = sb->s_journal_inum; 4733b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (fix_problem(ctx, PR_0_JOURNAL_BAD_INODE, pctx)) { 4745dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o if (has_journal && sb->s_journal_inum) 4753b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o printf("*** ext3 journal has been deleted - " 4763b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o "filesystem is now ext2 only ***\n\n"); 4775dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o sb->s_feature_compat &= ~EXT3_FEATURE_COMPAT_HAS_JOURNAL; 4785dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o sb->s_journal_inum = 0; 4795107d0d196b9c51cf18380b6996b1074afe51df2Kalpak Shah ctx->flags |= E2F_FLAG_JOURNAL_INODE; 4800cfce7f749ea519522929d91e705cf90518594c4Theodore Ts'o ctx->fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY; 4813b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o e2fsck_clear_recover(ctx, 1); 4823b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return 0; 4833b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } 4843b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return EXT2_ET_BAD_INODE_NUM; 4853b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } else if (recover) { 4863b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (fix_problem(ctx, PR_0_JOURNAL_RECOVER_SET, pctx)) { 4873b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o e2fsck_clear_recover(ctx, 1); 4883b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return 0; 4893b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } 4903b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return EXT2_ET_UNSUPP_FEATURE; 4913b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } 4923b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return 0; 4933b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o} 4943b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 49562e3e7fe4f32c2186e848f37b7f977835975413eTheodore Ts'o#define V1_SB_SIZE 0x0024 49662e3e7fe4f32c2186e848f37b7f977835975413eTheodore Ts'ostatic void clear_v2_journal_fields(journal_t *journal) 49762e3e7fe4f32c2186e848f37b7f977835975413eTheodore Ts'o{ 4988cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o e2fsck_t ctx = journal->j_dev->k_ctx; 49962e3e7fe4f32c2186e848f37b7f977835975413eTheodore Ts'o struct problem_context pctx; 50062e3e7fe4f32c2186e848f37b7f977835975413eTheodore Ts'o 50162e3e7fe4f32c2186e848f37b7f977835975413eTheodore Ts'o clear_problem_context(&pctx); 50262e3e7fe4f32c2186e848f37b7f977835975413eTheodore Ts'o 50362e3e7fe4f32c2186e848f37b7f977835975413eTheodore Ts'o if (!fix_problem(ctx, PR_0_CLEAR_V2_JOURNAL, &pctx)) 50462e3e7fe4f32c2186e848f37b7f977835975413eTheodore Ts'o return; 50562e3e7fe4f32c2186e848f37b7f977835975413eTheodore Ts'o 50662e3e7fe4f32c2186e848f37b7f977835975413eTheodore Ts'o memset(((char *) journal->j_superblock) + V1_SB_SIZE, 0, 50762e3e7fe4f32c2186e848f37b7f977835975413eTheodore Ts'o ctx->fs->blocksize-V1_SB_SIZE); 5088cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o mark_buffer_dirty(journal->j_sb_buffer); 50962e3e7fe4f32c2186e848f37b7f977835975413eTheodore Ts'o} 51062e3e7fe4f32c2186e848f37b7f977835975413eTheodore Ts'o 51162e3e7fe4f32c2186e848f37b7f977835975413eTheodore Ts'o 5126a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'ostatic errcode_t e2fsck_journal_load(journal_t *journal) 5133b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o{ 5148cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o e2fsck_t ctx = journal->j_dev->k_ctx; 5153b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o journal_superblock_t *jsb; 5163b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o struct buffer_head *jbh = journal->j_sb_buffer; 5173b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o struct problem_context pctx; 5183b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 5193b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o clear_problem_context(&pctx); 5203b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 5210e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o ll_rw_block(READ, 1, &jbh); 5223b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (jbh->b_err) { 523e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall com_err(ctx->device_name, jbh->b_err, "%s", 5243b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o _("reading journal superblock\n")); 5253b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return jbh->b_err; 5263b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } 5273b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 5283b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o jsb = journal->j_superblock; 5293b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o /* If we don't even have JFS_MAGIC, we probably have a wrong inode */ 5303b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (jsb->s_header.h_magic != htonl(JFS_MAGIC_NUMBER)) 5313b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return e2fsck_journal_fix_bad_inode(ctx, &pctx); 5323b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 5330e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o switch (ntohl(jsb->s_header.h_blocktype)) { 5340e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o case JFS_SUPERBLOCK_V1: 5350e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o journal->j_format_version = 1; 53662e3e7fe4f32c2186e848f37b7f977835975413eTheodore Ts'o if (jsb->s_feature_compat || 53762e3e7fe4f32c2186e848f37b7f977835975413eTheodore Ts'o jsb->s_feature_incompat || 53862e3e7fe4f32c2186e848f37b7f977835975413eTheodore Ts'o jsb->s_feature_ro_compat || 53962e3e7fe4f32c2186e848f37b7f977835975413eTheodore Ts'o jsb->s_nr_users) 54062e3e7fe4f32c2186e848f37b7f977835975413eTheodore Ts'o clear_v2_journal_fields(journal); 5410e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o break; 542efc6f628e15de95bcd13e4f0ee223cb42115d520Theodore Ts'o 5430e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o case JFS_SUPERBLOCK_V2: 5440e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o journal->j_format_version = 2; 545b3b3d465b1e833af355a41c1c470d8fa3592bc26Gabriel Paubert if (ntohl(jsb->s_nr_users) > 1 && 546a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o uuid_is_null(ctx->fs->super->s_journal_uuid)) 54762e3e7fe4f32c2186e848f37b7f977835975413eTheodore Ts'o clear_v2_journal_fields(journal); 548adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o if (ntohl(jsb->s_nr_users) > 1) { 549adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o fix_problem(ctx, PR_0_JOURNAL_UNSUPP_MULTIFS, &pctx); 550adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o return EXT2_ET_JOURNAL_UNSUPP_VERSION; 551adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o } 5520e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o break; 553c7f23364fd6d8d25d74e51ba5f342fc2230048d8Theodore Ts'o 554c7f23364fd6d8d25d74e51ba5f342fc2230048d8Theodore Ts'o /* 555c7f23364fd6d8d25d74e51ba5f342fc2230048d8Theodore Ts'o * These should never appear in a journal super block, so if 556c7f23364fd6d8d25d74e51ba5f342fc2230048d8Theodore Ts'o * they do, the journal is badly corrupted. 557c7f23364fd6d8d25d74e51ba5f342fc2230048d8Theodore Ts'o */ 558c7f23364fd6d8d25d74e51ba5f342fc2230048d8Theodore Ts'o case JFS_DESCRIPTOR_BLOCK: 559c7f23364fd6d8d25d74e51ba5f342fc2230048d8Theodore Ts'o case JFS_COMMIT_BLOCK: 560c7f23364fd6d8d25d74e51ba5f342fc2230048d8Theodore Ts'o case JFS_REVOKE_BLOCK: 561c7f23364fd6d8d25d74e51ba5f342fc2230048d8Theodore Ts'o return EXT2_ET_CORRUPT_SUPERBLOCK; 562efc6f628e15de95bcd13e4f0ee223cb42115d520Theodore Ts'o 5630e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o /* If we don't understand the superblock major type, but there 5640e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o * is a magic number, then it is likely to be a new format we 5650e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o * just don't understand, so leave it alone. */ 5660e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o default: 567c7f23364fd6d8d25d74e51ba5f342fc2230048d8Theodore Ts'o return EXT2_ET_JOURNAL_UNSUPP_VERSION; 5680e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o } 5690e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o 5702f686ace1c8e2f680ffd450d143cdd01a649687aTheodore Ts'o if (JFS_HAS_INCOMPAT_FEATURE(journal, ~JFS_KNOWN_INCOMPAT_FEATURES)) 5712f686ace1c8e2f680ffd450d143cdd01a649687aTheodore Ts'o return EXT2_ET_UNSUPP_FEATURE; 572efc6f628e15de95bcd13e4f0ee223cb42115d520Theodore Ts'o 5732f686ace1c8e2f680ffd450d143cdd01a649687aTheodore Ts'o if (JFS_HAS_RO_COMPAT_FEATURE(journal, ~JFS_KNOWN_ROCOMPAT_FEATURES)) 5742f686ace1c8e2f680ffd450d143cdd01a649687aTheodore Ts'o return EXT2_ET_RO_UNSUPP_FEATURE; 5753b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 5760e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o /* We have now checked whether we know enough about the journal 5770e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o * format to be able to proceed safely, so any other checks that 5780e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o * fail we should attempt to recover from. */ 5790e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o if (jsb->s_blocksize != htonl(journal->j_blocksize)) { 5800e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o com_err(ctx->program_name, EXT2_ET_CORRUPT_SUPERBLOCK, 5810e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o _("%s: no valid journal superblock found\n"), 5820e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o ctx->device_name); 5830e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o return EXT2_ET_CORRUPT_SUPERBLOCK; 5843b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } 5853b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 5863b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (ntohl(jsb->s_maxlen) < journal->j_maxlen) 5873b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o journal->j_maxlen = ntohl(jsb->s_maxlen); 5883b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o else if (ntohl(jsb->s_maxlen) > journal->j_maxlen) { 5890e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o com_err(ctx->program_name, EXT2_ET_CORRUPT_SUPERBLOCK, 5900e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o _("%s: journal too short\n"), 5910e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o ctx->device_name); 5923b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return EXT2_ET_CORRUPT_SUPERBLOCK; 5933b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } 5943b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 5953b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o journal->j_tail_sequence = ntohl(jsb->s_sequence); 596ecf1b7767e1772f4c6dba8f02026057ed05397bdTheodore Ts'o journal->j_transaction_sequence = journal->j_tail_sequence; 5973b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o journal->j_tail = ntohl(jsb->s_start); 5983b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o journal->j_first = ntohl(jsb->s_first); 5993b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o journal->j_last = ntohl(jsb->s_maxlen); 6003b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 6013b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return 0; 6023b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o} 6033b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 60453ef44c40a3e425d2c700d8fd77a6b655aa121feTheodore Ts'ostatic void e2fsck_journal_reset_super(e2fsck_t ctx, journal_superblock_t *jsb, 6056a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o journal_t *journal) 6063b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o{ 6070e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o char *p; 608424cd2beb7c40a3e4cf96b5bf28b24e48554a754Theodore Ts'o union { 609424cd2beb7c40a3e4cf96b5bf28b24e48554a754Theodore Ts'o uuid_t uuid; 610424cd2beb7c40a3e4cf96b5bf28b24e48554a754Theodore Ts'o __u32 val[4]; 611424cd2beb7c40a3e4cf96b5bf28b24e48554a754Theodore Ts'o } u; 612424cd2beb7c40a3e4cf96b5bf28b24e48554a754Theodore Ts'o __u32 new_seq = 0; 613424cd2beb7c40a3e4cf96b5bf28b24e48554a754Theodore Ts'o int i; 614424cd2beb7c40a3e4cf96b5bf28b24e48554a754Theodore Ts'o 6150e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o /* Leave a valid existing V1 superblock signature alone. 6160e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o * Anything unrecognisable we overwrite with a new V2 6170e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o * signature. */ 618efc6f628e15de95bcd13e4f0ee223cb42115d520Theodore Ts'o 6190e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o if (jsb->s_header.h_magic != htonl(JFS_MAGIC_NUMBER) || 6200e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o jsb->s_header.h_blocktype != htonl(JFS_SUPERBLOCK_V1)) { 6210e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o jsb->s_header.h_magic = htonl(JFS_MAGIC_NUMBER); 6220e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o jsb->s_header.h_blocktype = htonl(JFS_SUPERBLOCK_V2); 6230e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o } 6240e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o 6250e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o /* Zero out everything else beyond the superblock header */ 626efc6f628e15de95bcd13e4f0ee223cb42115d520Theodore Ts'o 6270e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o p = ((char *) jsb) + sizeof(journal_header_t); 6280e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o memset (p, 0, ctx->fs->blocksize-sizeof(journal_header_t)); 6290e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o 6303b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o jsb->s_blocksize = htonl(ctx->fs->blocksize); 6310e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o jsb->s_maxlen = htonl(journal->j_maxlen); 6320e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o jsb->s_first = htonl(1); 6330e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o 634424cd2beb7c40a3e4cf96b5bf28b24e48554a754Theodore Ts'o /* Initialize the journal sequence number so that there is "no" 635424cd2beb7c40a3e4cf96b5bf28b24e48554a754Theodore Ts'o * chance we will find old "valid" transactions in the journal. 636424cd2beb7c40a3e4cf96b5bf28b24e48554a754Theodore Ts'o * This avoids the need to zero the whole journal (slow to do, 637424cd2beb7c40a3e4cf96b5bf28b24e48554a754Theodore Ts'o * and risky when we are just recovering the filesystem). 638424cd2beb7c40a3e4cf96b5bf28b24e48554a754Theodore Ts'o */ 639424cd2beb7c40a3e4cf96b5bf28b24e48554a754Theodore Ts'o uuid_generate(u.uuid); 640424cd2beb7c40a3e4cf96b5bf28b24e48554a754Theodore Ts'o for (i = 0; i < 4; i ++) 641424cd2beb7c40a3e4cf96b5bf28b24e48554a754Theodore Ts'o new_seq ^= u.val[i]; 642424cd2beb7c40a3e4cf96b5bf28b24e48554a754Theodore Ts'o jsb->s_sequence = htonl(new_seq); 6430e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o 6448cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o mark_buffer_dirty(journal->j_sb_buffer); 6450e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o ll_rw_block(WRITE, 1, &journal->j_sb_buffer); 6463b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o} 6473b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 6486a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'ostatic errcode_t e2fsck_journal_fix_corrupt_super(e2fsck_t ctx, 6496a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o journal_t *journal, 6506a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o struct problem_context *pctx) 6513b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o{ 6525dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o struct ext2_super_block *sb = ctx->fs->super; 6535dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o int recover = ctx->fs->super->s_feature_incompat & 6545dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o EXT3_FEATURE_INCOMPAT_RECOVER; 6553b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 6565dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o if (sb->s_feature_compat & EXT3_FEATURE_COMPAT_HAS_JOURNAL) { 6573b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (fix_problem(ctx, PR_0_JOURNAL_BAD_SUPER, pctx)) { 658b2f93192a1701855d4f5f05f0087c45e92a35681Theodore Ts'o e2fsck_journal_reset_super(ctx, journal->j_superblock, 659b2f93192a1701855d4f5f05f0087c45e92a35681Theodore Ts'o journal); 6603b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o journal->j_transaction_sequence = 1; 6613b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o e2fsck_clear_recover(ctx, recover); 6623b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return 0; 6633b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } 6643b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return EXT2_ET_CORRUPT_SUPERBLOCK; 6653b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } else if (e2fsck_journal_fix_bad_inode(ctx, pctx)) 6663b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return EXT2_ET_CORRUPT_SUPERBLOCK; 6673b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 6683b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return 0; 6693b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o} 6703b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 6716a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'ostatic void e2fsck_journal_release(e2fsck_t ctx, journal_t *journal, 6726a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o int reset, int drop) 6733b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o{ 6743b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o journal_superblock_t *jsb; 6753b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 6766a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o if (drop) 6776a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o mark_buffer_clean(journal->j_sb_buffer); 6786a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o else if (!(ctx->options & E2F_OPT_READONLY)) { 6793b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o jsb = journal->j_superblock; 6803b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o jsb->s_sequence = htonl(journal->j_transaction_sequence); 6813b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (reset) 6823b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o jsb->s_start = 0; /* this marks the journal as empty */ 6838cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o mark_buffer_dirty(journal->j_sb_buffer); 6843b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } 6853b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o brelse(journal->j_sb_buffer); 6863b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 6876d222f3217b11c9b27f92b4aafe47bfeb59b81faTheodore Ts'o if (ctx->journal_io) { 6886d222f3217b11c9b27f92b4aafe47bfeb59b81faTheodore Ts'o if (ctx->fs && ctx->fs->io != ctx->journal_io) 6896d222f3217b11c9b27f92b4aafe47bfeb59b81faTheodore Ts'o io_channel_close(ctx->journal_io); 6906d222f3217b11c9b27f92b4aafe47bfeb59b81faTheodore Ts'o ctx->journal_io = 0; 6916d222f3217b11c9b27f92b4aafe47bfeb59b81faTheodore Ts'o } 692efc6f628e15de95bcd13e4f0ee223cb42115d520Theodore Ts'o 693d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o#ifndef USE_INODE_IO 6943b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (journal->j_inode) 695c4e3d3f374b409500e3dd05c0b0eca6ac98a6b4eTheodore Ts'o ext2fs_free_mem(&journal->j_inode); 696d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o#endif 697d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o if (journal->j_fs_dev) 698c4e3d3f374b409500e3dd05c0b0eca6ac98a6b4eTheodore Ts'o ext2fs_free_mem(&journal->j_fs_dev); 699c4e3d3f374b409500e3dd05c0b0eca6ac98a6b4eTheodore Ts'o ext2fs_free_mem(&journal); 7003b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o} 7013b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 7029b5657591b1db9b82fe433f3f90e496f3df6a851Theodore Ts'o/* 7039b5657591b1db9b82fe433f3f90e496f3df6a851Theodore Ts'o * This function makes sure that the superblock fields regarding the 7049b5657591b1db9b82fe433f3f90e496f3df6a851Theodore Ts'o * journal are consistent. 7059b5657591b1db9b82fe433f3f90e496f3df6a851Theodore Ts'o */ 706e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrallerrcode_t e2fsck_check_ext3_journal(e2fsck_t ctx) 7073b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o{ 7085dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o struct ext2_super_block *sb = ctx->fs->super; 7093b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o journal_t *journal; 7105dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o int recover = ctx->fs->super->s_feature_incompat & 7115dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o EXT3_FEATURE_INCOMPAT_RECOVER; 7123b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o struct problem_context pctx; 713d37066a9fa14ff3c0e7f4ea95e07204fce95f41aTheodore Ts'o problem_t problem; 714d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o int reset = 0, force_fsck = 0; 715e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall errcode_t retval; 7163b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 7173b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o /* If we don't have any journal features, don't do anything more */ 7185dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o if (!(sb->s_feature_compat & EXT3_FEATURE_COMPAT_HAS_JOURNAL) && 7195dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o !recover && sb->s_journal_inum == 0 && sb->s_journal_dev == 0 && 7205dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o uuid_is_null(sb->s_journal_uuid)) 7219b5657591b1db9b82fe433f3f90e496f3df6a851Theodore Ts'o return 0; 7223b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 7233b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o clear_problem_context(&pctx); 7245dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o pctx.num = sb->s_journal_inum; 7253b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 7263b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o retval = e2fsck_get_journal(ctx, &journal); 7273b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (retval) { 728f2d5c937034e6c07391549ef6d46b2c8db086c85Theodore Ts'o if ((retval == EXT2_ET_BAD_INODE_NUM) || 7296e4fbbeb500d6aa7aaa193f689356c487d461edeRichard Mortimer (retval == EXT2_ET_BAD_BLOCK_NUM) || 730f2d5c937034e6c07391549ef6d46b2c8db086c85Theodore Ts'o (retval == EXT2_ET_JOURNAL_TOO_SMALL) || 731f2d5c937034e6c07391549ef6d46b2c8db086c85Theodore Ts'o (retval == EXT2_ET_NO_JOURNAL)) 7323b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return e2fsck_journal_fix_bad_inode(ctx, &pctx); 7333b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return retval; 7343b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } 7353b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 7363b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o retval = e2fsck_journal_load(journal); 7373b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (retval) { 738c7f23364fd6d8d25d74e51ba5f342fc2230048d8Theodore Ts'o if ((retval == EXT2_ET_CORRUPT_SUPERBLOCK) || 7392f686ace1c8e2f680ffd450d143cdd01a649687aTheodore Ts'o ((retval == EXT2_ET_UNSUPP_FEATURE) && 7402f686ace1c8e2f680ffd450d143cdd01a649687aTheodore Ts'o (!fix_problem(ctx, PR_0_JOURNAL_UNSUPP_INCOMPAT, 7412f686ace1c8e2f680ffd450d143cdd01a649687aTheodore Ts'o &pctx))) || 7422f686ace1c8e2f680ffd450d143cdd01a649687aTheodore Ts'o ((retval == EXT2_ET_RO_UNSUPP_FEATURE) && 7432f686ace1c8e2f680ffd450d143cdd01a649687aTheodore Ts'o (!fix_problem(ctx, PR_0_JOURNAL_UNSUPP_ROCOMPAT, 7442f686ace1c8e2f680ffd450d143cdd01a649687aTheodore Ts'o &pctx))) || 745c7f23364fd6d8d25d74e51ba5f342fc2230048d8Theodore Ts'o ((retval == EXT2_ET_JOURNAL_UNSUPP_VERSION) && 746c7f23364fd6d8d25d74e51ba5f342fc2230048d8Theodore Ts'o (!fix_problem(ctx, PR_0_JOURNAL_UNSUPP_VERSION, &pctx)))) 7476a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o retval = e2fsck_journal_fix_corrupt_super(ctx, journal, 7486a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o &pctx); 7496a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o e2fsck_journal_release(ctx, journal, 0, 1); 7503b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return retval; 7513b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } 7523b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 7533b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o /* 7543b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o * We want to make the flags consistent here. We will not leave with 7553b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o * needs_recovery set but has_journal clear. We can't get in a loop 7563b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o * with -y, -n, or -p, only if a user isn't making up their mind. 7573b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o */ 7583b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'ono_has_journal: 7595dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o if (!(sb->s_feature_compat & EXT3_FEATURE_COMPAT_HAS_JOURNAL)) { 7605dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o recover = sb->s_feature_incompat & EXT3_FEATURE_INCOMPAT_RECOVER; 7613b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o pctx.str = "inode"; 7623b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (fix_problem(ctx, PR_0_JOURNAL_HAS_JOURNAL, &pctx)) { 7633b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (recover && 7643b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o !fix_problem(ctx, PR_0_JOURNAL_RECOVER_SET, &pctx)) 7653b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o goto no_has_journal; 766d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o /* 767d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o * Need a full fsck if we are releasing a 7688c2dc52180373f4e7b12e92669db59b1a52e2153Theodore Ts'o * journal stored on a reserved inode. 769d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o */ 770d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o force_fsck = recover || 771d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o (sb->s_journal_inum < EXT2_FIRST_INODE(sb)); 772d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o /* Clear all of the journal fields */ 7735dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o sb->s_journal_inum = 0; 774d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o sb->s_journal_dev = 0; 775d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o memset(sb->s_journal_uuid, 0, 776d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o sizeof(sb->s_journal_uuid)); 777d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o e2fsck_clear_recover(ctx, force_fsck); 7783b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } else if (!(ctx->options & E2F_OPT_READONLY)) { 7795dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o sb->s_feature_compat |= EXT3_FEATURE_COMPAT_HAS_JOURNAL; 7800cfce7f749ea519522929d91e705cf90518594c4Theodore Ts'o ctx->fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY; 7813b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o ext2fs_mark_super_dirty(ctx->fs); 7823b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } 7833b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } 7843b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 7855dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o if (sb->s_feature_compat & EXT3_FEATURE_COMPAT_HAS_JOURNAL && 7865dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o !(sb->s_feature_incompat & EXT3_FEATURE_INCOMPAT_RECOVER) && 7873b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o journal->j_superblock->s_start != 0) { 788d37066a9fa14ff3c0e7f4ea95e07204fce95f41aTheodore Ts'o /* Print status information */ 789d37066a9fa14ff3c0e7f4ea95e07204fce95f41aTheodore Ts'o fix_problem(ctx, PR_0_JOURNAL_RECOVERY_CLEAR, &pctx); 790d37066a9fa14ff3c0e7f4ea95e07204fce95f41aTheodore Ts'o if (ctx->superblock) 791d37066a9fa14ff3c0e7f4ea95e07204fce95f41aTheodore Ts'o problem = PR_0_JOURNAL_RUN_DEFAULT; 792d37066a9fa14ff3c0e7f4ea95e07204fce95f41aTheodore Ts'o else 793d37066a9fa14ff3c0e7f4ea95e07204fce95f41aTheodore Ts'o problem = PR_0_JOURNAL_RUN; 794d37066a9fa14ff3c0e7f4ea95e07204fce95f41aTheodore Ts'o if (fix_problem(ctx, problem, &pctx)) { 795d37066a9fa14ff3c0e7f4ea95e07204fce95f41aTheodore Ts'o ctx->options |= E2F_OPT_FORCE; 796d37066a9fa14ff3c0e7f4ea95e07204fce95f41aTheodore Ts'o sb->s_feature_incompat |= 797d37066a9fa14ff3c0e7f4ea95e07204fce95f41aTheodore Ts'o EXT3_FEATURE_INCOMPAT_RECOVER; 798d37066a9fa14ff3c0e7f4ea95e07204fce95f41aTheodore Ts'o ext2fs_mark_super_dirty(ctx->fs); 799d37066a9fa14ff3c0e7f4ea95e07204fce95f41aTheodore Ts'o } else if (fix_problem(ctx, 800d37066a9fa14ff3c0e7f4ea95e07204fce95f41aTheodore Ts'o PR_0_JOURNAL_RESET_JOURNAL, &pctx)) { 8013b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o reset = 1; 802d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o sb->s_state &= ~EXT2_VALID_FS; 803d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o ext2fs_mark_super_dirty(ctx->fs); 804d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o } 805d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o /* 806d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o * If the user answers no to the above question, we 807d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o * ignore the fact that journal apparently has data; 808d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o * accidentally replaying over valid data would be far 809d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o * worse than skipping a questionable recovery. 810efc6f628e15de95bcd13e4f0ee223cb42115d520Theodore Ts'o * 811d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o * XXX should we abort with a fatal error here? What 812d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o * will the ext3 kernel code do if a filesystem with 813d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o * !NEEDS_RECOVERY but with a non-zero 814d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o * journal->j_superblock->s_start is mounted? 815d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o */ 8163b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } 8173b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 8186d75685e2b76f4099589ad33732cf59f279b5d65Theodore Ts'o /* 8196d75685e2b76f4099589ad33732cf59f279b5d65Theodore Ts'o * If we don't need to do replay the journal, check to see if 8206d75685e2b76f4099589ad33732cf59f279b5d65Theodore Ts'o * the journal's errno is set; if so, we need to mark the file 8216d75685e2b76f4099589ad33732cf59f279b5d65Theodore Ts'o * system as being corrupt and clear the journal's s_errno. 8226d75685e2b76f4099589ad33732cf59f279b5d65Theodore Ts'o */ 8236d75685e2b76f4099589ad33732cf59f279b5d65Theodore Ts'o if (!(sb->s_feature_incompat & EXT3_FEATURE_INCOMPAT_RECOVER) && 8246d75685e2b76f4099589ad33732cf59f279b5d65Theodore Ts'o journal->j_superblock->s_errno) { 8256d75685e2b76f4099589ad33732cf59f279b5d65Theodore Ts'o ctx->fs->super->s_state |= EXT2_ERROR_FS; 8266d75685e2b76f4099589ad33732cf59f279b5d65Theodore Ts'o ext2fs_mark_super_dirty(ctx->fs); 8276d75685e2b76f4099589ad33732cf59f279b5d65Theodore Ts'o journal->j_superblock->s_errno = 0; 8286d75685e2b76f4099589ad33732cf59f279b5d65Theodore Ts'o mark_buffer_dirty(journal->j_sb_buffer); 8296d75685e2b76f4099589ad33732cf59f279b5d65Theodore Ts'o } 8306d75685e2b76f4099589ad33732cf59f279b5d65Theodore Ts'o 8316a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o e2fsck_journal_release(ctx, journal, reset, 0); 8323b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return retval; 8333b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o} 8343b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 8356a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'ostatic errcode_t recover_ext3_journal(e2fsck_t ctx) 8363b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o{ 837185c4aeaf23d48375e3506218305031663203d0fTheodore Ts'o struct problem_context pctx; 8383b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o journal_t *journal; 839e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall errcode_t retval; 8403b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 841185c4aeaf23d48375e3506218305031663203d0fTheodore Ts'o clear_problem_context(&pctx); 842185c4aeaf23d48375e3506218305031663203d0fTheodore Ts'o 8438cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o journal_init_revoke_caches(); 8443b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o retval = e2fsck_get_journal(ctx, &journal); 8453b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (retval) 846ecf1b7767e1772f4c6dba8f02026057ed05397bdTheodore Ts'o return retval; 847ecf1b7767e1772f4c6dba8f02026057ed05397bdTheodore Ts'o 8483b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o retval = e2fsck_journal_load(journal); 8493b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (retval) 8506a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o goto errout; 8513b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 8520e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o retval = journal_init_revoke(journal, 1024); 8530e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o if (retval) 8546a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o goto errout; 855efc6f628e15de95bcd13e4f0ee223cb42115d520Theodore Ts'o 8563b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o retval = -journal_recover(journal); 857c0a083fac3b8f03ae15f5bf30c230c015538051eTheodore Ts'o if (retval) 858c0a083fac3b8f03ae15f5bf30c230c015538051eTheodore Ts'o goto errout; 859efc6f628e15de95bcd13e4f0ee223cb42115d520Theodore Ts'o 860185c4aeaf23d48375e3506218305031663203d0fTheodore Ts'o if (journal->j_failed_commit) { 861185c4aeaf23d48375e3506218305031663203d0fTheodore Ts'o pctx.ino = journal->j_failed_commit; 862185c4aeaf23d48375e3506218305031663203d0fTheodore Ts'o fix_problem(ctx, PR_0_JNL_TXN_CORRUPT, &pctx); 86363b3913dbc0bc7cdf8a63f3bdb0c8d7d605e9a40Theodore Ts'o journal->j_superblock->s_errno = -EINVAL; 8648cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o mark_buffer_dirty(journal->j_sb_buffer); 865c0a083fac3b8f03ae15f5bf30c230c015538051eTheodore Ts'o } 866efc6f628e15de95bcd13e4f0ee223cb42115d520Theodore Ts'o 8676a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'oerrout: 868d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o journal_destroy_revoke(journal); 8698cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o journal_destroy_revoke_caches(); 8706a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o e2fsck_journal_release(ctx, journal, 1, 0); 8713b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return retval; 8723b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o} 8733b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 874e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrallerrcode_t e2fsck_run_ext3_journal(e2fsck_t ctx) 87580bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o{ 87680bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o io_manager io_ptr = ctx->fs->io->manager; 87780bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o int blocksize = ctx->fs->blocksize; 878ecf1b7767e1772f4c6dba8f02026057ed05397bdTheodore Ts'o errcode_t retval, recover_retval; 87927a407df546eafa54f3f50c470e3a0a4c788fae5Theodore Ts'o io_stats stats = 0; 88027a407df546eafa54f3f50c470e3a0a4c788fae5Theodore Ts'o unsigned long long kbytes_written = 0; 8818394902e04e64ed10ca81e869892c00143ee4931Theodore Ts'o 8828394902e04e64ed10ca81e869892c00143ee4931Theodore Ts'o printf(_("%s: recovering journal\n"), ctx->device_name); 883ecf1b7767e1772f4c6dba8f02026057ed05397bdTheodore Ts'o if (ctx->options & E2F_OPT_READONLY) { 8848394902e04e64ed10ca81e869892c00143ee4931Theodore Ts'o printf(_("%s: won't do journal recovery while read-only\n"), 885ecf1b7767e1772f4c6dba8f02026057ed05397bdTheodore Ts'o ctx->device_name); 886ecf1b7767e1772f4c6dba8f02026057ed05397bdTheodore Ts'o return EXT2_ET_FILE_RO; 887ecf1b7767e1772f4c6dba8f02026057ed05397bdTheodore Ts'o } 888ecf1b7767e1772f4c6dba8f02026057ed05397bdTheodore Ts'o 8890f2cfe25796bd53b920b1607410bf94251f17fbcTheodore Ts'o if (ctx->fs->flags & EXT2_FLAG_DIRTY) 8903c6b8977d44c66f0a50dd77c18a78b57b1022f8cTheodore Ts'o ext2fs_flush(ctx->fs); /* Force out any modifications */ 891d051521278790e5fc7d97d59bb3be6b662a76365Theodore Ts'o 892ecf1b7767e1772f4c6dba8f02026057ed05397bdTheodore Ts'o recover_retval = recover_ext3_journal(ctx); 893efc6f628e15de95bcd13e4f0ee223cb42115d520Theodore Ts'o 89480bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o /* 89580bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o * Reload the filesystem context to get up-to-date data from disk 89680bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o * because journal recovery will change the filesystem under us. 89780bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o */ 89827a407df546eafa54f3f50c470e3a0a4c788fae5Theodore Ts'o if (ctx->fs->super->s_kbytes_written && 89927a407df546eafa54f3f50c470e3a0a4c788fae5Theodore Ts'o ctx->fs->io->manager->get_stats) 90027a407df546eafa54f3f50c470e3a0a4c788fae5Theodore Ts'o ctx->fs->io->manager->get_stats(ctx->fs->io, &stats); 90127a407df546eafa54f3f50c470e3a0a4c788fae5Theodore Ts'o if (stats && stats->bytes_written) 90227a407df546eafa54f3f50c470e3a0a4c788fae5Theodore Ts'o kbytes_written = stats->bytes_written >> 10; 903e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall 904e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall ext2fs_mmp_stop(ctx->fs); 90527a407df546eafa54f3f50c470e3a0a4c788fae5Theodore Ts'o ext2fs_free(ctx->fs); 906ecf1b7767e1772f4c6dba8f02026057ed05397bdTheodore Ts'o retval = ext2fs_open(ctx->filesystem_name, EXT2_FLAG_RW, 90780bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o ctx->superblock, blocksize, io_ptr, 90880bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o &ctx->fs); 90980bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o if (retval) { 91080bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o com_err(ctx->program_name, retval, 91180bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o _("while trying to re-open %s"), 91280bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o ctx->device_name); 91399a2cc969fb47e8c87965aa9fb93cabf6fe4ac1eTheodore Ts'o fatal_error(ctx, 0); 91480bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o } 91580bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o ctx->fs->priv_data = ctx; 9168dceb92407f751d1a8aecd4bfb36d1fe2dc3cf9aTheodore Ts'o ctx->fs->now = ctx->now; 917058ad1c70c9a097d282270c6f76d3c3493e15fe2Theodore Ts'o ctx->fs->flags |= EXT2_FLAG_MASTER_SB_ONLY; 91827a407df546eafa54f3f50c470e3a0a4c788fae5Theodore Ts'o ctx->fs->super->s_kbytes_written += kbytes_written; 91917390c047f5470eec005c5461a7926d03d6bbbe7Theodore Ts'o 920ecf1b7767e1772f4c6dba8f02026057ed05397bdTheodore Ts'o /* Set the superblock flags */ 921e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall e2fsck_clear_recover(ctx, recover_retval != 0); 92263b3913dbc0bc7cdf8a63f3bdb0c8d7d605e9a40Theodore Ts'o 92363b3913dbc0bc7cdf8a63f3bdb0c8d7d605e9a40Theodore Ts'o /* 92463b3913dbc0bc7cdf8a63f3bdb0c8d7d605e9a40Theodore Ts'o * Do one last sanity check, and propagate journal->s_errno to 92563b3913dbc0bc7cdf8a63f3bdb0c8d7d605e9a40Theodore Ts'o * the EXT2_ERROR_FS flag in the fs superblock if needed. 92663b3913dbc0bc7cdf8a63f3bdb0c8d7d605e9a40Theodore Ts'o */ 92763b3913dbc0bc7cdf8a63f3bdb0c8d7d605e9a40Theodore Ts'o retval = e2fsck_check_ext3_journal(ctx); 92863b3913dbc0bc7cdf8a63f3bdb0c8d7d605e9a40Theodore Ts'o return retval ? retval : recover_retval; 92917390c047f5470eec005c5461a7926d03d6bbbe7Theodore Ts'o} 930773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o 931773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o/* 932773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o * This function will move the journal inode from a visible file in 933773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o * the filesystem directory hierarchy to the reserved inode if necessary. 934773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o */ 935546a1ff18cc912003883ff67ba3e87c69f700fc4Theodore Ts'ostatic const char * const journal_names[] = { 936773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o ".journal", "journal", ".journal.dat", "journal.dat", 0 }; 937773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o 938773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'ovoid e2fsck_move_ext3_journal(e2fsck_t ctx) 939773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o{ 940773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o struct ext2_super_block *sb = ctx->fs->super; 941773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o struct problem_context pctx; 942773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o struct ext2_inode inode; 943773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o ext2_filsys fs = ctx->fs; 944773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o ext2_ino_t ino; 945773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o errcode_t retval; 946773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o const char * const * cpp; 947e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall dgrp_t group; 948e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall int mount_flags; 949efc6f628e15de95bcd13e4f0ee223cb42115d520Theodore Ts'o 950a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o clear_problem_context(&pctx); 951a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o 952773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o /* 953773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o * If the filesystem is opened read-only, or there is no 954a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o * journal, then do nothing. 955773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o */ 956773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o if ((ctx->options & E2F_OPT_READONLY) || 957773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o (sb->s_journal_inum == 0) || 958773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o !(sb->s_feature_compat & EXT3_FEATURE_COMPAT_HAS_JOURNAL)) 959773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o return; 960773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o 961773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o /* 962a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o * Read in the journal inode 963a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o */ 964a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o if (ext2fs_read_inode(fs, sb->s_journal_inum, &inode) != 0) 965a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o return; 966a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o 967a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o /* 968a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o * If it's necessary to backup the journal inode, do so. 969a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o */ 970a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o if ((sb->s_jnl_backup_type == 0) || 971a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o ((sb->s_jnl_backup_type == EXT3_JNL_BACKUP_BLOCKS) && 972a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o memcmp(inode.i_block, sb->s_jnl_blocks, EXT2_N_BLOCKS*4))) { 973a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o if (fix_problem(ctx, PR_0_BACKUP_JNL, &pctx)) { 974a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o memcpy(sb->s_jnl_blocks, inode.i_block, 975a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o EXT2_N_BLOCKS*4); 976e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall sb->s_jnl_blocks[15] = inode.i_size_high; 977a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o sb->s_jnl_blocks[16] = inode.i_size; 978a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o sb->s_jnl_backup_type = EXT3_JNL_BACKUP_BLOCKS; 979a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o ext2fs_mark_super_dirty(fs); 98027479eb2270c344a0042b4c492337b67a547c393Theodore Ts'o fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY; 981a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o } 982a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o } 983a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o 984a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o /* 985a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o * If the journal is already the hidden inode, then do nothing 986a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o */ 987a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o if (sb->s_journal_inum == EXT2_JOURNAL_INO) 988a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o return; 989efc6f628e15de95bcd13e4f0ee223cb42115d520Theodore Ts'o 990a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o /* 991a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o * The journal inode had better have only one link and not be readable. 992a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o */ 993a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o if (inode.i_links_count != 1) 994a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o return; 995a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o 996a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o /* 997773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o * If the filesystem is mounted, or we can't tell whether 998773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o * or not it's mounted, do nothing. 999773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o */ 1000773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o retval = ext2fs_check_if_mounted(ctx->filesystem_name, &mount_flags); 1001773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o if (retval || (mount_flags & EXT2_MF_MOUNTED)) 1002773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o return; 1003773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o 1004773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o /* 1005773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o * If we can't find the name of the journal inode, then do 1006773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o * nothing. 1007773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o */ 1008773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o for (cpp = journal_names; *cpp; cpp++) { 1009773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o retval = ext2fs_lookup(fs, EXT2_ROOT_INO, *cpp, 1010773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o strlen(*cpp), 0, &ino); 1011773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o if ((retval == 0) && (ino == sb->s_journal_inum)) 1012773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o break; 1013773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o } 1014773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o if (*cpp == 0) 1015773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o return; 1016773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o 1017773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o /* We need the inode bitmap to be loaded */ 1018773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o retval = ext2fs_read_bitmaps(fs); 1019773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o if (retval) 1020773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o return; 1021773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o 1022773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o pctx.str = *cpp; 1023773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o if (!fix_problem(ctx, PR_0_MOVE_JOURNAL, &pctx)) 1024773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o return; 1025efc6f628e15de95bcd13e4f0ee223cb42115d520Theodore Ts'o 1026773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o /* 1027773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o * OK, we've done all the checks, let's actually move the 1028773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o * journal inode. Errors at this point mean we need to force 1029773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o * an ext2 filesystem check. 1030773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o */ 1031773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o if ((retval = ext2fs_unlink(fs, EXT2_ROOT_INO, *cpp, ino, 0)) != 0) 1032773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o goto err_out; 1033773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o if ((retval = ext2fs_write_inode(fs, EXT2_JOURNAL_INO, &inode)) != 0) 1034773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o goto err_out; 1035773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o sb->s_journal_inum = EXT2_JOURNAL_INO; 1036773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o ext2fs_mark_super_dirty(fs); 103727479eb2270c344a0042b4c492337b67a547c393Theodore Ts'o fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY; 1038773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o inode.i_links_count = 0; 10391f3ad14a5ad5df3ac4012d41ef5d76411cd8fff3Theodore Ts'o inode.i_dtime = ctx->now; 1040773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o if ((retval = ext2fs_write_inode(fs, ino, &inode)) != 0) 1041773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o goto err_out; 1042773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o 1043773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o group = ext2fs_group_of_ino(fs, ino); 1044e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall ext2fs_unmark_inode_bitmap2(fs->inode_map, ino); 1045773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o ext2fs_mark_ib_dirty(fs); 1046e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall ext2fs_bg_free_inodes_count_set(fs, group, ext2fs_bg_free_inodes_count(fs, group) + 1); 104749a7360ba6b986242d9f0f33e102291d2e0dfb47Jose R. Santos ext2fs_group_desc_csum_set(fs, group); 1048773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o fs->super->s_free_inodes_count++; 1049773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o return; 1050773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o 1051773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'oerr_out: 1052773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o pctx.errcode = retval; 1053773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o fix_problem(ctx, PR_0_ERR_MOVE_JOURNAL, &pctx); 1054773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o fs->super->s_state &= ~EXT2_VALID_FS; 1055773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o ext2fs_mark_super_dirty(fs); 1056773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o return; 1057773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o} 1058773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o 1059b1c52b26a44efeb366402985763c242a4b21aeb1Theodore Ts'o/* 1060b1c52b26a44efeb366402985763c242a4b21aeb1Theodore Ts'o * This function makes sure the superblock hint for the external 1061b1c52b26a44efeb366402985763c242a4b21aeb1Theodore Ts'o * journal is correct. 1062b1c52b26a44efeb366402985763c242a4b21aeb1Theodore Ts'o */ 1063b1c52b26a44efeb366402985763c242a4b21aeb1Theodore Ts'oint e2fsck_fix_ext3_journal_hint(e2fsck_t ctx) 1064b1c52b26a44efeb366402985763c242a4b21aeb1Theodore Ts'o{ 1065b1c52b26a44efeb366402985763c242a4b21aeb1Theodore Ts'o struct ext2_super_block *sb = ctx->fs->super; 1066b1c52b26a44efeb366402985763c242a4b21aeb1Theodore Ts'o struct problem_context pctx; 1067b1c52b26a44efeb366402985763c242a4b21aeb1Theodore Ts'o char uuid[37], *journal_name; 1068b1c52b26a44efeb366402985763c242a4b21aeb1Theodore Ts'o struct stat st; 1069b1c52b26a44efeb366402985763c242a4b21aeb1Theodore Ts'o 1070b1c52b26a44efeb366402985763c242a4b21aeb1Theodore Ts'o if (!(sb->s_feature_compat & EXT3_FEATURE_COMPAT_HAS_JOURNAL) || 1071b1c52b26a44efeb366402985763c242a4b21aeb1Theodore Ts'o uuid_is_null(sb->s_journal_uuid)) 1072b1c52b26a44efeb366402985763c242a4b21aeb1Theodore Ts'o return 0; 1073b1c52b26a44efeb366402985763c242a4b21aeb1Theodore Ts'o 1074b1c52b26a44efeb366402985763c242a4b21aeb1Theodore Ts'o uuid_unparse(sb->s_journal_uuid, uuid); 1075b1c52b26a44efeb366402985763c242a4b21aeb1Theodore Ts'o journal_name = blkid_get_devname(ctx->blkid, "UUID", uuid); 1076b1c52b26a44efeb366402985763c242a4b21aeb1Theodore Ts'o if (!journal_name) 1077b1c52b26a44efeb366402985763c242a4b21aeb1Theodore Ts'o return 0; 1078b1c52b26a44efeb366402985763c242a4b21aeb1Theodore Ts'o 1079e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall if (stat(journal_name, &st) < 0) { 1080e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall free(journal_name); 1081b1c52b26a44efeb366402985763c242a4b21aeb1Theodore Ts'o return 0; 1082e0ed7404719a9ddd2ba427a80db5365c8bad18c0JP Abgrall } 1083b1c52b26a44efeb366402985763c242a4b21aeb1Theodore Ts'o 1084b1c52b26a44efeb366402985763c242a4b21aeb1Theodore Ts'o if (st.st_rdev != sb->s_journal_dev) { 1085b1c52b26a44efeb366402985763c242a4b21aeb1Theodore Ts'o clear_problem_context(&pctx); 1086b1c52b26a44efeb366402985763c242a4b21aeb1Theodore Ts'o pctx.num = st.st_rdev; 1087b1c52b26a44efeb366402985763c242a4b21aeb1Theodore Ts'o if (fix_problem(ctx, PR_0_EXTERNAL_JOURNAL_HINT, &pctx)) { 1088b1c52b26a44efeb366402985763c242a4b21aeb1Theodore Ts'o sb->s_journal_dev = st.st_rdev; 1089b1c52b26a44efeb366402985763c242a4b21aeb1Theodore Ts'o ext2fs_mark_super_dirty(ctx->fs); 1090b1c52b26a44efeb366402985763c242a4b21aeb1Theodore Ts'o } 1091b1c52b26a44efeb366402985763c242a4b21aeb1Theodore Ts'o } 1092b1c52b26a44efeb366402985763c242a4b21aeb1Theodore Ts'o 1093b1c52b26a44efeb366402985763c242a4b21aeb1Theodore Ts'o free(journal_name); 1094b1c52b26a44efeb366402985763c242a4b21aeb1Theodore Ts'o return 0; 1095b1c52b26a44efeb366402985763c242a4b21aeb1Theodore Ts'o} 1096