journal.c revision 27a407df546eafa54f3f50c470e3a0a4c788fae5
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 */ 468cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'oint journal_bmap(journal_t *journal, blk_t block, unsigned 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; 548cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o blk_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 61efc6f628e15de95bcd13e4f0ee223cb42115d520Theodore Ts'o retval= ext2fs_bmap(inode->i_ctx->fs, inode->i_ino, 628cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o &inode->i_ext2, NULL, 0, block, &pblk); 638cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o *phys = pblk; 648cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o return (retval); 65d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o#endif 663b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o} 673b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 688cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'ostruct buffer_head *getblk(kdev_t kdev, blk_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 823b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o jfs_debug(4, "getblk for block %lu (%d bytes)(total %d)\n", 83185c4aeaf23d48375e3506218305031663203d0fTheodore Ts'o (unsigned 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{ 1103b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o int 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) { 116efc6f628e15de95bcd13e4f0ee223cb42115d520Theodore Ts'o jfs_debug(3, "reading block %lu/%p\n", 11753ef44c40a3e425d2c700d8fd77a6b655aa121feTheodore Ts'o (unsigned long) bh->b_blocknr, (void *) bh); 118efc6f628e15de95bcd13e4f0ee223cb42115d520Theodore Ts'o retval = io_channel_read_blk(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, 123efc6f628e15de95bcd13e4f0ee223cb42115d520Theodore Ts'o "while reading block %lu\n", 124544349270e4c74a6feb971123884a8cf5052a7eeTheodore Ts'o (unsigned long) bh->b_blocknr); 1250e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o bh->b_err = 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) { 130efc6f628e15de95bcd13e4f0ee223cb42115d520Theodore Ts'o jfs_debug(3, "writing block %lu/%p\n", 13153ef44c40a3e425d2c700d8fd77a6b655aa121feTheodore Ts'o (unsigned long) bh->b_blocknr, (void *) bh); 132efc6f628e15de95bcd13e4f0ee223cb42115d520Theodore Ts'o retval = io_channel_write_blk(bh->b_io, 1330e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o bh->b_blocknr, 1340e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o 1, bh->b_data); 1350e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o if (retval) { 1360e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o com_err(bh->b_ctx->device_name, retval, 137efc6f628e15de95bcd13e4f0ee223cb42115d520Theodore Ts'o "while writing block %lu\n", 138544349270e4c74a6feb971123884a8cf5052a7eeTheodore Ts'o (unsigned long) bh->b_blocknr); 1390e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o bh->b_err = retval; 1400e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o continue; 1410e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o } 1420e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o bh->b_dirty = 0; 1430e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o bh->b_uptodate = 1; 144b969b1b8a5c13992cadb026114731958644540d8Matthias Andree } else { 1450e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o jfs_debug(3, "no-op %s for block %lu\n", 146efc6f628e15de95bcd13e4f0ee223cb42115d520Theodore Ts'o rw == READ ? "read" : "write", 14753ef44c40a3e425d2c700d8fd77a6b655aa121feTheodore Ts'o (unsigned long) bh->b_blocknr); 148b969b1b8a5c13992cadb026114731958644540d8Matthias Andree } 1490e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o } 1503b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o} 1513b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 1528cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'ovoid mark_buffer_dirty(struct buffer_head *bh) 1533b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o{ 1548cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o bh->b_dirty = 1; 1553b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o} 1563b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 1576a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'ostatic void mark_buffer_clean(struct buffer_head * bh) 1586a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o{ 1596a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o bh->b_dirty = 0; 1606a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o} 1616a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o 1623b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'ovoid brelse(struct buffer_head *bh) 1633b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o{ 1643b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (bh->b_dirty) 1650e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o ll_rw_block(WRITE, 1, &bh); 1663b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o jfs_debug(3, "freeing block %lu/%p (total %d)\n", 16753ef44c40a3e425d2c700d8fd77a6b655aa121feTheodore Ts'o (unsigned long) bh->b_blocknr, (void *) bh, --bh_count); 168c4e3d3f374b409500e3dd05c0b0eca6ac98a6b4eTheodore Ts'o ext2fs_free_mem(&bh); 1693b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o} 1703b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 1713b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'oint buffer_uptodate(struct buffer_head *bh) 1723b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o{ 1733b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return bh->b_uptodate; 1743b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o} 1753b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 17615986f7931e1fe65621b4defb5522c9bf8da76efTheodore Ts'ovoid mark_buffer_uptodate(struct buffer_head *bh, int val) 17715986f7931e1fe65621b4defb5522c9bf8da76efTheodore Ts'o{ 17815986f7931e1fe65621b4defb5522c9bf8da76efTheodore Ts'o bh->b_uptodate = val; 17915986f7931e1fe65621b4defb5522c9bf8da76efTheodore Ts'o} 18015986f7931e1fe65621b4defb5522c9bf8da76efTheodore Ts'o 1813b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'ovoid wait_on_buffer(struct buffer_head *bh) 1823b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o{ 1833b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (!bh->b_uptodate) 1840e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o ll_rw_block(READ, 1, &bh); 1853b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o} 1863b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 18780bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o 1883b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'ostatic void e2fsck_clear_recover(e2fsck_t ctx, int error) 1893b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o{ 1905dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o ctx->fs->super->s_feature_incompat &= ~EXT3_FEATURE_INCOMPAT_RECOVER; 1913b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 1923b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o /* if we had an error doing journal recovery, we need a full fsck */ 1933b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (error) 1945dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o ctx->fs->super->s_state &= ~EXT2_VALID_FS; 1953b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o ext2fs_mark_super_dirty(ctx->fs); 1963b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o} 1973b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 198051afbe0d7f49429c26d2a7a33f1f3857d07c3d0Theodore Ts'o/* 199051afbe0d7f49429c26d2a7a33f1f3857d07c3d0Theodore Ts'o * This is a helper function to check the validity of the journal. 200051afbe0d7f49429c26d2a7a33f1f3857d07c3d0Theodore Ts'o */ 201051afbe0d7f49429c26d2a7a33f1f3857d07c3d0Theodore Ts'ostruct process_block_struct { 202051afbe0d7f49429c26d2a7a33f1f3857d07c3d0Theodore Ts'o e2_blkcnt_t last_block; 203051afbe0d7f49429c26d2a7a33f1f3857d07c3d0Theodore Ts'o}; 204051afbe0d7f49429c26d2a7a33f1f3857d07c3d0Theodore Ts'o 205051afbe0d7f49429c26d2a7a33f1f3857d07c3d0Theodore Ts'ostatic int process_journal_block(ext2_filsys fs, 206051afbe0d7f49429c26d2a7a33f1f3857d07c3d0Theodore Ts'o blk_t *block_nr, 207051afbe0d7f49429c26d2a7a33f1f3857d07c3d0Theodore Ts'o e2_blkcnt_t blockcnt, 208051afbe0d7f49429c26d2a7a33f1f3857d07c3d0Theodore Ts'o blk_t ref_block EXT2FS_ATTR((unused)), 209051afbe0d7f49429c26d2a7a33f1f3857d07c3d0Theodore Ts'o int ref_offset EXT2FS_ATTR((unused)), 210051afbe0d7f49429c26d2a7a33f1f3857d07c3d0Theodore Ts'o void *priv_data) 211051afbe0d7f49429c26d2a7a33f1f3857d07c3d0Theodore Ts'o{ 212051afbe0d7f49429c26d2a7a33f1f3857d07c3d0Theodore Ts'o struct process_block_struct *p; 213051afbe0d7f49429c26d2a7a33f1f3857d07c3d0Theodore Ts'o blk_t blk = *block_nr; 214051afbe0d7f49429c26d2a7a33f1f3857d07c3d0Theodore Ts'o 215051afbe0d7f49429c26d2a7a33f1f3857d07c3d0Theodore Ts'o p = (struct process_block_struct *) priv_data; 216051afbe0d7f49429c26d2a7a33f1f3857d07c3d0Theodore Ts'o 217051afbe0d7f49429c26d2a7a33f1f3857d07c3d0Theodore Ts'o if (blk < fs->super->s_first_data_block || 218051afbe0d7f49429c26d2a7a33f1f3857d07c3d0Theodore Ts'o blk >= fs->super->s_blocks_count) 219051afbe0d7f49429c26d2a7a33f1f3857d07c3d0Theodore Ts'o return BLOCK_ABORT; 220051afbe0d7f49429c26d2a7a33f1f3857d07c3d0Theodore Ts'o 221051afbe0d7f49429c26d2a7a33f1f3857d07c3d0Theodore Ts'o if (blockcnt >= 0) 222051afbe0d7f49429c26d2a7a33f1f3857d07c3d0Theodore Ts'o p->last_block = blockcnt; 223051afbe0d7f49429c26d2a7a33f1f3857d07c3d0Theodore Ts'o return 0; 224051afbe0d7f49429c26d2a7a33f1f3857d07c3d0Theodore Ts'o} 225051afbe0d7f49429c26d2a7a33f1f3857d07c3d0Theodore Ts'o 226d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'ostatic errcode_t e2fsck_get_journal(e2fsck_t ctx, journal_t **ret_journal) 2273b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o{ 228051afbe0d7f49429c26d2a7a33f1f3857d07c3d0Theodore Ts'o struct process_block_struct pb; 229d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o struct ext2_super_block *sb = ctx->fs->super; 230d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o struct ext2_super_block jsuper; 231d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o struct problem_context pctx; 232d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o struct buffer_head *bh; 233d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o struct inode *j_inode = NULL; 234d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o struct kdev_s *dev_fs = NULL, *dev_journal; 2353e69906495d5898849a6154b0311b5d4a84a27aeTheodore Ts'o const char *journal_name = 0; 236d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o journal_t *journal = NULL; 2373e69906495d5898849a6154b0311b5d4a84a27aeTheodore Ts'o errcode_t retval = 0; 2383e69906495d5898849a6154b0311b5d4a84a27aeTheodore Ts'o io_manager io_ptr = 0; 239d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o unsigned long start = 0; 240d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o int ext_journal = 0; 241a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o int tried_backup_jnl = 0; 2422bfe0bdba37bfd0e4378e855377ebaa823846ea3Brian Behlendorf 243d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o clear_problem_context(&pctx); 2442bfe0bdba37bfd0e4378e855377ebaa823846ea3Brian Behlendorf 245d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o journal = e2fsck_allocate_memory(ctx, sizeof(journal_t), "journal"); 246d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o if (!journal) { 2473b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return EXT2_ET_NO_MEMORY; 2483b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } 2493b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 2508cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o dev_fs = e2fsck_allocate_memory(ctx, 2*sizeof(struct kdev_s), "kdev"); 2518cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o if (!dev_fs) { 2528cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o retval = EXT2_ET_NO_MEMORY; 2538cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o goto errout; 2548cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o } 2558cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o dev_journal = dev_fs+1; 2562bfe0bdba37bfd0e4378e855377ebaa823846ea3Brian Behlendorf 2578cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o dev_fs->k_ctx = dev_journal->k_ctx = ctx; 2588cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o dev_fs->k_dev = K_DEV_FS; 2598cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o dev_journal->k_dev = K_DEV_JOURNAL; 2602bfe0bdba37bfd0e4378e855377ebaa823846ea3Brian Behlendorf 261d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o journal->j_dev = dev_journal; 262d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o journal->j_fs_dev = dev_fs; 263d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o journal->j_inode = NULL; 264d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o journal->j_blocksize = ctx->fs->blocksize; 2653b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 266d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o if (uuid_is_null(sb->s_journal_uuid)) { 2672bfe0bdba37bfd0e4378e855377ebaa823846ea3Brian Behlendorf if (!sb->s_journal_inum) { 2682bfe0bdba37bfd0e4378e855377ebaa823846ea3Brian Behlendorf retval = EXT2_ET_BAD_INODE_NUM; 2692bfe0bdba37bfd0e4378e855377ebaa823846ea3Brian Behlendorf goto errout; 2702bfe0bdba37bfd0e4378e855377ebaa823846ea3Brian Behlendorf } 271d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o j_inode = e2fsck_allocate_memory(ctx, sizeof(*j_inode), 272d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o "journal inode"); 273d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o if (!j_inode) { 274d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o retval = EXT2_ET_NO_MEMORY; 275d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o goto errout; 276d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o } 2773b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 278d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o j_inode->i_ctx = ctx; 279d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o j_inode->i_ino = sb->s_journal_inum; 2802bfe0bdba37bfd0e4378e855377ebaa823846ea3Brian Behlendorf 281d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o if ((retval = ext2fs_read_inode(ctx->fs, 282d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o sb->s_journal_inum, 283a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o &j_inode->i_ext2))) { 284a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o try_backup_journal: 285a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o if (sb->s_jnl_backup_type != EXT3_JNL_BACKUP_BLOCKS || 286a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o tried_backup_jnl) 287a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o goto errout; 288a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o memset(&j_inode->i_ext2, 0, sizeof(struct ext2_inode)); 289efc6f628e15de95bcd13e4f0ee223cb42115d520Theodore Ts'o memcpy(&j_inode->i_ext2.i_block[0], sb->s_jnl_blocks, 290a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o EXT2_N_BLOCKS*4); 291a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o j_inode->i_ext2.i_size = sb->s_jnl_blocks[16]; 292a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o j_inode->i_ext2.i_links_count = 1; 293a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o j_inode->i_ext2.i_mode = LINUX_S_IFREG | 0600; 294051afbe0d7f49429c26d2a7a33f1f3857d07c3d0Theodore Ts'o e2fsck_use_inode_shortcuts(ctx, 1); 295051afbe0d7f49429c26d2a7a33f1f3857d07c3d0Theodore Ts'o ctx->stashed_ino = j_inode->i_ino; 296051afbe0d7f49429c26d2a7a33f1f3857d07c3d0Theodore Ts'o ctx->stashed_inode = &j_inode->i_ext2; 297a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o tried_backup_jnl++; 298a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o } 299d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o if (!j_inode->i_ext2.i_links_count || 300d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o !LINUX_S_ISREG(j_inode->i_ext2.i_mode)) { 301d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o retval = EXT2_ET_NO_JOURNAL; 302a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o goto try_backup_journal; 303d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o } 304d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o if (j_inode->i_ext2.i_size / journal->j_blocksize < 305d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o JFS_MIN_JOURNAL_BLOCKS) { 306d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o retval = EXT2_ET_JOURNAL_TOO_SMALL; 307a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o goto try_backup_journal; 308a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o } 309051afbe0d7f49429c26d2a7a33f1f3857d07c3d0Theodore Ts'o pb.last_block = -1; 310051afbe0d7f49429c26d2a7a33f1f3857d07c3d0Theodore Ts'o retval = ext2fs_block_iterate2(ctx->fs, j_inode->i_ino, 311efc6f628e15de95bcd13e4f0ee223cb42115d520Theodore Ts'o BLOCK_FLAG_HOLE, 0, 312051afbe0d7f49429c26d2a7a33f1f3857d07c3d0Theodore Ts'o process_journal_block, &pb); 313efc6f628e15de95bcd13e4f0ee223cb42115d520Theodore Ts'o if ((pb.last_block+1) * ctx->fs->blocksize < 314051afbe0d7f49429c26d2a7a33f1f3857d07c3d0Theodore Ts'o j_inode->i_ext2.i_size) { 315051afbe0d7f49429c26d2a7a33f1f3857d07c3d0Theodore Ts'o retval = EXT2_ET_JOURNAL_TOO_SMALL; 316051afbe0d7f49429c26d2a7a33f1f3857d07c3d0Theodore Ts'o goto try_backup_journal; 317d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o } 318ded28ac2ab67300f39783184a8f8930b548fc5f0Kalpak Shah if (tried_backup_jnl && !(ctx->options & E2F_OPT_READONLY)) { 319ded28ac2ab67300f39783184a8f8930b548fc5f0Kalpak Shah retval = ext2fs_write_inode(ctx->fs, sb->s_journal_inum, 320ded28ac2ab67300f39783184a8f8930b548fc5f0Kalpak Shah &j_inode->i_ext2); 321ded28ac2ab67300f39783184a8f8930b548fc5f0Kalpak Shah if (retval) 322ded28ac2ab67300f39783184a8f8930b548fc5f0Kalpak Shah goto errout; 323ded28ac2ab67300f39783184a8f8930b548fc5f0Kalpak Shah } 324ded28ac2ab67300f39783184a8f8930b548fc5f0Kalpak Shah 325d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o journal->j_maxlen = j_inode->i_ext2.i_size / journal->j_blocksize; 3263b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 327d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o#ifdef USE_INODE_IO 328a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o retval = ext2fs_inode_io_intern2(ctx->fs, sb->s_journal_inum, 329a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o &j_inode->i_ext2, 330a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o &journal_name); 331d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o if (retval) 332d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o goto errout; 3333b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 334d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o io_ptr = inode_io_manager; 335d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o#else 336d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o journal->j_inode = j_inode; 337d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o ctx->journal_io = ctx->fs->io; 338d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o if ((retval = journal_bmap(journal, 0, &start)) != 0) 339d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o goto errout; 340d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o#endif 341d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o } else { 342d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o ext_journal = 1; 343f364093b1956def0b0f1d037852cbb645284d5f2Theodore Ts'o if (!ctx->journal_name) { 344f364093b1956def0b0f1d037852cbb645284d5f2Theodore Ts'o char uuid[37]; 345f364093b1956def0b0f1d037852cbb645284d5f2Theodore Ts'o 346f364093b1956def0b0f1d037852cbb645284d5f2Theodore Ts'o uuid_unparse(sb->s_journal_uuid, uuid); 347f364093b1956def0b0f1d037852cbb645284d5f2Theodore Ts'o ctx->journal_name = blkid_get_devname(ctx->blkid, 348f364093b1956def0b0f1d037852cbb645284d5f2Theodore Ts'o "UUID", uuid); 349f364093b1956def0b0f1d037852cbb645284d5f2Theodore Ts'o if (!ctx->journal_name) 350f364093b1956def0b0f1d037852cbb645284d5f2Theodore Ts'o ctx->journal_name = blkid_devno_to_devname(sb->s_journal_dev); 351d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o } 352f364093b1956def0b0f1d037852cbb645284d5f2Theodore Ts'o journal_name = ctx->journal_name; 3532bfe0bdba37bfd0e4378e855377ebaa823846ea3Brian Behlendorf 354d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o if (!journal_name) { 355d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o fix_problem(ctx, PR_0_CANT_FIND_JOURNAL, &pctx); 3562bfe0bdba37bfd0e4378e855377ebaa823846ea3Brian Behlendorf retval = EXT2_ET_LOAD_EXT_JOURNAL; 3572bfe0bdba37bfd0e4378e855377ebaa823846ea3Brian Behlendorf goto errout; 358d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o } 3592bfe0bdba37bfd0e4378e855377ebaa823846ea3Brian Behlendorf 360d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o jfs_debug(1, "Using journal file %s\n", journal_name); 361d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o io_ptr = unix_io_manager; 3623b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } 3633b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 364d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o#if 0 365d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o test_io_backing_manager = io_ptr; 366adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o io_ptr = test_io_manager; 367adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o#endif 368d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o#ifndef USE_INODE_IO 369d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o if (ext_journal) 370d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o#endif 371d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o retval = io_ptr->open(journal_name, IO_FLAG_RW, 372d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o &ctx->journal_io); 3736d222f3217b11c9b27f92b4aafe47bfeb59b81faTheodore Ts'o if (retval) 374d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o goto errout; 375adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o 376d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o io_channel_set_blksize(ctx->journal_io, ctx->fs->blocksize); 377d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o 378d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o if (ext_journal) { 379d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o if (ctx->fs->blocksize == 1024) 380d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o start = 1; 381d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o bh = getblk(dev_journal, start, ctx->fs->blocksize); 382d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o if (!bh) { 383d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o retval = EXT2_ET_NO_MEMORY; 384d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o goto errout; 385d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o } 386d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o ll_rw_block(READ, 1, &bh); 3872aa362f54a9a486ffd495028b95532897551d619Theodore Ts'o if ((retval = bh->b_err) != 0) { 3882aa362f54a9a486ffd495028b95532897551d619Theodore Ts'o brelse(bh); 389d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o goto errout; 3902aa362f54a9a486ffd495028b95532897551d619Theodore Ts'o } 391d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o memcpy(&jsuper, start ? bh->b_data : bh->b_data + 1024, 392d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o sizeof(jsuper)); 393d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o brelse(bh); 3942eae093081a097a0a611fe2817e1533825dfdd86Theodore Ts'o#ifdef WORDS_BIGENDIAN 395efc6f628e15de95bcd13e4f0ee223cb42115d520Theodore Ts'o if (jsuper.s_magic == ext2fs_swab16(EXT2_SUPER_MAGIC)) 396d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o ext2fs_swap_super(&jsuper); 397adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o#endif 398d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o if (jsuper.s_magic != EXT2_SUPER_MAGIC || 399d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o !(jsuper.s_feature_incompat & EXT3_FEATURE_INCOMPAT_JOURNAL_DEV)) { 400d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o fix_problem(ctx, PR_0_EXT_JOURNAL_BAD_SUPER, &pctx); 401d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o retval = EXT2_ET_LOAD_EXT_JOURNAL; 402d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o goto errout; 403d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o } 404d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o /* Make sure the journal UUID is correct */ 405d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o if (memcmp(jsuper.s_uuid, ctx->fs->super->s_journal_uuid, 406d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o sizeof(jsuper.s_uuid))) { 407d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o fix_problem(ctx, PR_0_JOURNAL_BAD_UUID, &pctx); 408d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o retval = EXT2_ET_LOAD_EXT_JOURNAL; 409d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o goto errout; 410d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o } 4112bfe0bdba37bfd0e4378e855377ebaa823846ea3Brian Behlendorf 412d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o journal->j_maxlen = jsuper.s_blocks_count; 413d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o start++; 4143b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } 4153b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 416d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o if (!(bh = getblk(dev_journal, start, journal->j_blocksize))) { 417adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o retval = EXT2_ET_NO_MEMORY; 418adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o goto errout; 419adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o } 4202bfe0bdba37bfd0e4378e855377ebaa823846ea3Brian Behlendorf 421d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o journal->j_sb_buffer = bh; 422d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o journal->j_superblock = (journal_superblock_t *)bh->b_data; 4232bfe0bdba37bfd0e4378e855377ebaa823846ea3Brian Behlendorf 424d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o#ifdef USE_INODE_IO 425d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o if (j_inode) 426c4e3d3f374b409500e3dd05c0b0eca6ac98a6b4eTheodore Ts'o ext2fs_free_mem(&j_inode); 427d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o#endif 428d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o 429d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o *ret_journal = journal; 430051afbe0d7f49429c26d2a7a33f1f3857d07c3d0Theodore Ts'o e2fsck_use_inode_shortcuts(ctx, 0); 431adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o return 0; 432adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o 433adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'oerrout: 434051afbe0d7f49429c26d2a7a33f1f3857d07c3d0Theodore Ts'o e2fsck_use_inode_shortcuts(ctx, 0); 435d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o if (dev_fs) 436c4e3d3f374b409500e3dd05c0b0eca6ac98a6b4eTheodore Ts'o ext2fs_free_mem(&dev_fs); 437d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o if (j_inode) 438c4e3d3f374b409500e3dd05c0b0eca6ac98a6b4eTheodore Ts'o ext2fs_free_mem(&j_inode); 439d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o if (journal) 440c4e3d3f374b409500e3dd05c0b0eca6ac98a6b4eTheodore Ts'o ext2fs_free_mem(&journal); 441adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o return retval; 4423b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o} 4433b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 4446a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'ostatic errcode_t e2fsck_journal_fix_bad_inode(e2fsck_t ctx, 4456a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o struct problem_context *pctx) 4463b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o{ 4475dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o struct ext2_super_block *sb = ctx->fs->super; 4485dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o int recover = ctx->fs->super->s_feature_incompat & 4495dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o EXT3_FEATURE_INCOMPAT_RECOVER; 4505dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o int has_journal = ctx->fs->super->s_feature_compat & 4515dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o EXT3_FEATURE_COMPAT_HAS_JOURNAL; 4523b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 4535dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o if (has_journal || sb->s_journal_inum) { 4543b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o /* The journal inode is bogus, remove and force full fsck */ 4557e92dfae9e60947a20a2078b7871b073441dac44Theodore Ts'o pctx->ino = sb->s_journal_inum; 4563b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (fix_problem(ctx, PR_0_JOURNAL_BAD_INODE, pctx)) { 4575dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o if (has_journal && sb->s_journal_inum) 4583b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o printf("*** ext3 journal has been deleted - " 4593b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o "filesystem is now ext2 only ***\n\n"); 4605dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o sb->s_feature_compat &= ~EXT3_FEATURE_COMPAT_HAS_JOURNAL; 4615dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o sb->s_journal_inum = 0; 4625107d0d196b9c51cf18380b6996b1074afe51df2Kalpak Shah ctx->flags |= E2F_FLAG_JOURNAL_INODE; 4630cfce7f749ea519522929d91e705cf90518594c4Theodore Ts'o ctx->fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY; 4643b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o e2fsck_clear_recover(ctx, 1); 4653b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return 0; 4663b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } 4673b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return EXT2_ET_BAD_INODE_NUM; 4683b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } else if (recover) { 4693b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (fix_problem(ctx, PR_0_JOURNAL_RECOVER_SET, pctx)) { 4703b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o e2fsck_clear_recover(ctx, 1); 4713b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return 0; 4723b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } 4733b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return EXT2_ET_UNSUPP_FEATURE; 4743b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } 4753b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return 0; 4763b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o} 4773b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 47862e3e7fe4f32c2186e848f37b7f977835975413eTheodore Ts'o#define V1_SB_SIZE 0x0024 47962e3e7fe4f32c2186e848f37b7f977835975413eTheodore Ts'ostatic void clear_v2_journal_fields(journal_t *journal) 48062e3e7fe4f32c2186e848f37b7f977835975413eTheodore Ts'o{ 4818cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o e2fsck_t ctx = journal->j_dev->k_ctx; 48262e3e7fe4f32c2186e848f37b7f977835975413eTheodore Ts'o struct problem_context pctx; 48362e3e7fe4f32c2186e848f37b7f977835975413eTheodore Ts'o 48462e3e7fe4f32c2186e848f37b7f977835975413eTheodore Ts'o clear_problem_context(&pctx); 48562e3e7fe4f32c2186e848f37b7f977835975413eTheodore Ts'o 48662e3e7fe4f32c2186e848f37b7f977835975413eTheodore Ts'o if (!fix_problem(ctx, PR_0_CLEAR_V2_JOURNAL, &pctx)) 48762e3e7fe4f32c2186e848f37b7f977835975413eTheodore Ts'o return; 48862e3e7fe4f32c2186e848f37b7f977835975413eTheodore Ts'o 48962e3e7fe4f32c2186e848f37b7f977835975413eTheodore Ts'o memset(((char *) journal->j_superblock) + V1_SB_SIZE, 0, 49062e3e7fe4f32c2186e848f37b7f977835975413eTheodore Ts'o ctx->fs->blocksize-V1_SB_SIZE); 4918cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o mark_buffer_dirty(journal->j_sb_buffer); 49262e3e7fe4f32c2186e848f37b7f977835975413eTheodore Ts'o} 49362e3e7fe4f32c2186e848f37b7f977835975413eTheodore Ts'o 49462e3e7fe4f32c2186e848f37b7f977835975413eTheodore Ts'o 4956a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'ostatic errcode_t e2fsck_journal_load(journal_t *journal) 4963b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o{ 4978cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o e2fsck_t ctx = journal->j_dev->k_ctx; 4983b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o journal_superblock_t *jsb; 4993b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o struct buffer_head *jbh = journal->j_sb_buffer; 5003b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o struct problem_context pctx; 5013b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 5023b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o clear_problem_context(&pctx); 5033b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 5040e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o ll_rw_block(READ, 1, &jbh); 5053b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (jbh->b_err) { 5063b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o com_err(ctx->device_name, jbh->b_err, 5073b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o _("reading journal superblock\n")); 5083b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return jbh->b_err; 5093b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } 5103b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 5113b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o jsb = journal->j_superblock; 5123b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o /* If we don't even have JFS_MAGIC, we probably have a wrong inode */ 5133b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (jsb->s_header.h_magic != htonl(JFS_MAGIC_NUMBER)) 5143b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return e2fsck_journal_fix_bad_inode(ctx, &pctx); 5153b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 5160e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o switch (ntohl(jsb->s_header.h_blocktype)) { 5170e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o case JFS_SUPERBLOCK_V1: 5180e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o journal->j_format_version = 1; 51962e3e7fe4f32c2186e848f37b7f977835975413eTheodore Ts'o if (jsb->s_feature_compat || 52062e3e7fe4f32c2186e848f37b7f977835975413eTheodore Ts'o jsb->s_feature_incompat || 52162e3e7fe4f32c2186e848f37b7f977835975413eTheodore Ts'o jsb->s_feature_ro_compat || 52262e3e7fe4f32c2186e848f37b7f977835975413eTheodore Ts'o jsb->s_nr_users) 52362e3e7fe4f32c2186e848f37b7f977835975413eTheodore Ts'o clear_v2_journal_fields(journal); 5240e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o break; 525efc6f628e15de95bcd13e4f0ee223cb42115d520Theodore Ts'o 5260e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o case JFS_SUPERBLOCK_V2: 5270e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o journal->j_format_version = 2; 528b3b3d465b1e833af355a41c1c470d8fa3592bc26Gabriel Paubert if (ntohl(jsb->s_nr_users) > 1 && 529a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o uuid_is_null(ctx->fs->super->s_journal_uuid)) 53062e3e7fe4f32c2186e848f37b7f977835975413eTheodore Ts'o clear_v2_journal_fields(journal); 531adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o if (ntohl(jsb->s_nr_users) > 1) { 532adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o fix_problem(ctx, PR_0_JOURNAL_UNSUPP_MULTIFS, &pctx); 533adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o return EXT2_ET_JOURNAL_UNSUPP_VERSION; 534adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o } 5350e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o break; 536c7f23364fd6d8d25d74e51ba5f342fc2230048d8Theodore Ts'o 537c7f23364fd6d8d25d74e51ba5f342fc2230048d8Theodore Ts'o /* 538c7f23364fd6d8d25d74e51ba5f342fc2230048d8Theodore Ts'o * These should never appear in a journal super block, so if 539c7f23364fd6d8d25d74e51ba5f342fc2230048d8Theodore Ts'o * they do, the journal is badly corrupted. 540c7f23364fd6d8d25d74e51ba5f342fc2230048d8Theodore Ts'o */ 541c7f23364fd6d8d25d74e51ba5f342fc2230048d8Theodore Ts'o case JFS_DESCRIPTOR_BLOCK: 542c7f23364fd6d8d25d74e51ba5f342fc2230048d8Theodore Ts'o case JFS_COMMIT_BLOCK: 543c7f23364fd6d8d25d74e51ba5f342fc2230048d8Theodore Ts'o case JFS_REVOKE_BLOCK: 544c7f23364fd6d8d25d74e51ba5f342fc2230048d8Theodore Ts'o return EXT2_ET_CORRUPT_SUPERBLOCK; 545efc6f628e15de95bcd13e4f0ee223cb42115d520Theodore Ts'o 5460e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o /* If we don't understand the superblock major type, but there 5470e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o * is a magic number, then it is likely to be a new format we 5480e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o * just don't understand, so leave it alone. */ 5490e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o default: 550c7f23364fd6d8d25d74e51ba5f342fc2230048d8Theodore Ts'o return EXT2_ET_JOURNAL_UNSUPP_VERSION; 5510e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o } 5520e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o 5532f686ace1c8e2f680ffd450d143cdd01a649687aTheodore Ts'o if (JFS_HAS_INCOMPAT_FEATURE(journal, ~JFS_KNOWN_INCOMPAT_FEATURES)) 5542f686ace1c8e2f680ffd450d143cdd01a649687aTheodore Ts'o return EXT2_ET_UNSUPP_FEATURE; 555efc6f628e15de95bcd13e4f0ee223cb42115d520Theodore Ts'o 5562f686ace1c8e2f680ffd450d143cdd01a649687aTheodore Ts'o if (JFS_HAS_RO_COMPAT_FEATURE(journal, ~JFS_KNOWN_ROCOMPAT_FEATURES)) 5572f686ace1c8e2f680ffd450d143cdd01a649687aTheodore Ts'o return EXT2_ET_RO_UNSUPP_FEATURE; 5583b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 5590e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o /* We have now checked whether we know enough about the journal 5600e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o * format to be able to proceed safely, so any other checks that 5610e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o * fail we should attempt to recover from. */ 5620e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o if (jsb->s_blocksize != htonl(journal->j_blocksize)) { 5630e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o com_err(ctx->program_name, EXT2_ET_CORRUPT_SUPERBLOCK, 5640e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o _("%s: no valid journal superblock found\n"), 5650e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o ctx->device_name); 5660e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o return EXT2_ET_CORRUPT_SUPERBLOCK; 5673b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } 5683b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 5693b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (ntohl(jsb->s_maxlen) < journal->j_maxlen) 5703b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o journal->j_maxlen = ntohl(jsb->s_maxlen); 5713b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o else if (ntohl(jsb->s_maxlen) > journal->j_maxlen) { 5720e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o com_err(ctx->program_name, EXT2_ET_CORRUPT_SUPERBLOCK, 5730e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o _("%s: journal too short\n"), 5740e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o ctx->device_name); 5753b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return EXT2_ET_CORRUPT_SUPERBLOCK; 5763b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } 5773b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 5783b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o journal->j_tail_sequence = ntohl(jsb->s_sequence); 579ecf1b7767e1772f4c6dba8f02026057ed05397bdTheodore Ts'o journal->j_transaction_sequence = journal->j_tail_sequence; 5803b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o journal->j_tail = ntohl(jsb->s_start); 5813b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o journal->j_first = ntohl(jsb->s_first); 5823b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o journal->j_last = ntohl(jsb->s_maxlen); 5833b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 5843b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return 0; 5853b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o} 5863b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 58753ef44c40a3e425d2c700d8fd77a6b655aa121feTheodore Ts'ostatic void e2fsck_journal_reset_super(e2fsck_t ctx, journal_superblock_t *jsb, 5886a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o journal_t *journal) 5893b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o{ 5900e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o char *p; 591424cd2beb7c40a3e4cf96b5bf28b24e48554a754Theodore Ts'o union { 592424cd2beb7c40a3e4cf96b5bf28b24e48554a754Theodore Ts'o uuid_t uuid; 593424cd2beb7c40a3e4cf96b5bf28b24e48554a754Theodore Ts'o __u32 val[4]; 594424cd2beb7c40a3e4cf96b5bf28b24e48554a754Theodore Ts'o } u; 595424cd2beb7c40a3e4cf96b5bf28b24e48554a754Theodore Ts'o __u32 new_seq = 0; 596424cd2beb7c40a3e4cf96b5bf28b24e48554a754Theodore Ts'o int i; 597424cd2beb7c40a3e4cf96b5bf28b24e48554a754Theodore Ts'o 5980e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o /* Leave a valid existing V1 superblock signature alone. 5990e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o * Anything unrecognisable we overwrite with a new V2 6000e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o * signature. */ 601efc6f628e15de95bcd13e4f0ee223cb42115d520Theodore Ts'o 6020e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o if (jsb->s_header.h_magic != htonl(JFS_MAGIC_NUMBER) || 6030e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o jsb->s_header.h_blocktype != htonl(JFS_SUPERBLOCK_V1)) { 6040e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o jsb->s_header.h_magic = htonl(JFS_MAGIC_NUMBER); 6050e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o jsb->s_header.h_blocktype = htonl(JFS_SUPERBLOCK_V2); 6060e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o } 6070e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o 6080e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o /* Zero out everything else beyond the superblock header */ 609efc6f628e15de95bcd13e4f0ee223cb42115d520Theodore Ts'o 6100e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o p = ((char *) jsb) + sizeof(journal_header_t); 6110e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o memset (p, 0, ctx->fs->blocksize-sizeof(journal_header_t)); 6120e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o 6133b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o jsb->s_blocksize = htonl(ctx->fs->blocksize); 6140e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o jsb->s_maxlen = htonl(journal->j_maxlen); 6150e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o jsb->s_first = htonl(1); 6160e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o 617424cd2beb7c40a3e4cf96b5bf28b24e48554a754Theodore Ts'o /* Initialize the journal sequence number so that there is "no" 618424cd2beb7c40a3e4cf96b5bf28b24e48554a754Theodore Ts'o * chance we will find old "valid" transactions in the journal. 619424cd2beb7c40a3e4cf96b5bf28b24e48554a754Theodore Ts'o * This avoids the need to zero the whole journal (slow to do, 620424cd2beb7c40a3e4cf96b5bf28b24e48554a754Theodore Ts'o * and risky when we are just recovering the filesystem). 621424cd2beb7c40a3e4cf96b5bf28b24e48554a754Theodore Ts'o */ 622424cd2beb7c40a3e4cf96b5bf28b24e48554a754Theodore Ts'o uuid_generate(u.uuid); 623424cd2beb7c40a3e4cf96b5bf28b24e48554a754Theodore Ts'o for (i = 0; i < 4; i ++) 624424cd2beb7c40a3e4cf96b5bf28b24e48554a754Theodore Ts'o new_seq ^= u.val[i]; 625424cd2beb7c40a3e4cf96b5bf28b24e48554a754Theodore Ts'o jsb->s_sequence = htonl(new_seq); 6260e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o 6278cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o mark_buffer_dirty(journal->j_sb_buffer); 6280e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o ll_rw_block(WRITE, 1, &journal->j_sb_buffer); 6293b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o} 6303b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 6316a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'ostatic errcode_t e2fsck_journal_fix_corrupt_super(e2fsck_t ctx, 6326a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o journal_t *journal, 6336a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o struct problem_context *pctx) 6343b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o{ 6355dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o struct ext2_super_block *sb = ctx->fs->super; 6365dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o int recover = ctx->fs->super->s_feature_incompat & 6375dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o EXT3_FEATURE_INCOMPAT_RECOVER; 6383b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 6395dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o if (sb->s_feature_compat & EXT3_FEATURE_COMPAT_HAS_JOURNAL) { 6403b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (fix_problem(ctx, PR_0_JOURNAL_BAD_SUPER, pctx)) { 641b2f93192a1701855d4f5f05f0087c45e92a35681Theodore Ts'o e2fsck_journal_reset_super(ctx, journal->j_superblock, 642b2f93192a1701855d4f5f05f0087c45e92a35681Theodore Ts'o journal); 6433b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o journal->j_transaction_sequence = 1; 6443b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o e2fsck_clear_recover(ctx, recover); 6453b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return 0; 6463b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } 6473b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return EXT2_ET_CORRUPT_SUPERBLOCK; 6483b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } else if (e2fsck_journal_fix_bad_inode(ctx, pctx)) 6493b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return EXT2_ET_CORRUPT_SUPERBLOCK; 6503b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 6513b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return 0; 6523b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o} 6533b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 6546a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'ostatic void e2fsck_journal_release(e2fsck_t ctx, journal_t *journal, 6556a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o int reset, int drop) 6563b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o{ 6573b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o journal_superblock_t *jsb; 6583b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 6596a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o if (drop) 6606a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o mark_buffer_clean(journal->j_sb_buffer); 6616a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o else if (!(ctx->options & E2F_OPT_READONLY)) { 6623b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o jsb = journal->j_superblock; 6633b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o jsb->s_sequence = htonl(journal->j_transaction_sequence); 6643b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (reset) 6653b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o jsb->s_start = 0; /* this marks the journal as empty */ 6668cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o mark_buffer_dirty(journal->j_sb_buffer); 6673b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } 6683b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o brelse(journal->j_sb_buffer); 6693b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 6706d222f3217b11c9b27f92b4aafe47bfeb59b81faTheodore Ts'o if (ctx->journal_io) { 6716d222f3217b11c9b27f92b4aafe47bfeb59b81faTheodore Ts'o if (ctx->fs && ctx->fs->io != ctx->journal_io) 6726d222f3217b11c9b27f92b4aafe47bfeb59b81faTheodore Ts'o io_channel_close(ctx->journal_io); 6736d222f3217b11c9b27f92b4aafe47bfeb59b81faTheodore Ts'o ctx->journal_io = 0; 6746d222f3217b11c9b27f92b4aafe47bfeb59b81faTheodore Ts'o } 675efc6f628e15de95bcd13e4f0ee223cb42115d520Theodore Ts'o 676d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o#ifndef USE_INODE_IO 6773b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (journal->j_inode) 678c4e3d3f374b409500e3dd05c0b0eca6ac98a6b4eTheodore Ts'o ext2fs_free_mem(&journal->j_inode); 679d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o#endif 680d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o if (journal->j_fs_dev) 681c4e3d3f374b409500e3dd05c0b0eca6ac98a6b4eTheodore Ts'o ext2fs_free_mem(&journal->j_fs_dev); 682c4e3d3f374b409500e3dd05c0b0eca6ac98a6b4eTheodore Ts'o ext2fs_free_mem(&journal); 6833b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o} 6843b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 6859b5657591b1db9b82fe433f3f90e496f3df6a851Theodore Ts'o/* 6869b5657591b1db9b82fe433f3f90e496f3df6a851Theodore Ts'o * This function makes sure that the superblock fields regarding the 6879b5657591b1db9b82fe433f3f90e496f3df6a851Theodore Ts'o * journal are consistent. 6889b5657591b1db9b82fe433f3f90e496f3df6a851Theodore Ts'o */ 6893b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'oint e2fsck_check_ext3_journal(e2fsck_t ctx) 6903b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o{ 6915dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o struct ext2_super_block *sb = ctx->fs->super; 6923b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o journal_t *journal; 6935dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o int recover = ctx->fs->super->s_feature_incompat & 6945dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o EXT3_FEATURE_INCOMPAT_RECOVER; 6953b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o struct problem_context pctx; 696d37066a9fa14ff3c0e7f4ea95e07204fce95f41aTheodore Ts'o problem_t problem; 697d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o int reset = 0, force_fsck = 0; 6983b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o int retval; 6993b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 7003b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o /* If we don't have any journal features, don't do anything more */ 7015dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o if (!(sb->s_feature_compat & EXT3_FEATURE_COMPAT_HAS_JOURNAL) && 7025dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o !recover && sb->s_journal_inum == 0 && sb->s_journal_dev == 0 && 7035dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o uuid_is_null(sb->s_journal_uuid)) 7049b5657591b1db9b82fe433f3f90e496f3df6a851Theodore Ts'o return 0; 7053b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 7063b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o clear_problem_context(&pctx); 7075dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o pctx.num = sb->s_journal_inum; 7083b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 7093b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o retval = e2fsck_get_journal(ctx, &journal); 7103b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (retval) { 711f2d5c937034e6c07391549ef6d46b2c8db086c85Theodore Ts'o if ((retval == EXT2_ET_BAD_INODE_NUM) || 7126e4fbbeb500d6aa7aaa193f689356c487d461edeRichard Mortimer (retval == EXT2_ET_BAD_BLOCK_NUM) || 713f2d5c937034e6c07391549ef6d46b2c8db086c85Theodore Ts'o (retval == EXT2_ET_JOURNAL_TOO_SMALL) || 714f2d5c937034e6c07391549ef6d46b2c8db086c85Theodore Ts'o (retval == EXT2_ET_NO_JOURNAL)) 7153b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return e2fsck_journal_fix_bad_inode(ctx, &pctx); 7163b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return retval; 7173b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } 7183b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 7193b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o retval = e2fsck_journal_load(journal); 7203b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (retval) { 721c7f23364fd6d8d25d74e51ba5f342fc2230048d8Theodore Ts'o if ((retval == EXT2_ET_CORRUPT_SUPERBLOCK) || 7222f686ace1c8e2f680ffd450d143cdd01a649687aTheodore Ts'o ((retval == EXT2_ET_UNSUPP_FEATURE) && 7232f686ace1c8e2f680ffd450d143cdd01a649687aTheodore Ts'o (!fix_problem(ctx, PR_0_JOURNAL_UNSUPP_INCOMPAT, 7242f686ace1c8e2f680ffd450d143cdd01a649687aTheodore Ts'o &pctx))) || 7252f686ace1c8e2f680ffd450d143cdd01a649687aTheodore Ts'o ((retval == EXT2_ET_RO_UNSUPP_FEATURE) && 7262f686ace1c8e2f680ffd450d143cdd01a649687aTheodore Ts'o (!fix_problem(ctx, PR_0_JOURNAL_UNSUPP_ROCOMPAT, 7272f686ace1c8e2f680ffd450d143cdd01a649687aTheodore Ts'o &pctx))) || 728c7f23364fd6d8d25d74e51ba5f342fc2230048d8Theodore Ts'o ((retval == EXT2_ET_JOURNAL_UNSUPP_VERSION) && 729c7f23364fd6d8d25d74e51ba5f342fc2230048d8Theodore Ts'o (!fix_problem(ctx, PR_0_JOURNAL_UNSUPP_VERSION, &pctx)))) 7306a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o retval = e2fsck_journal_fix_corrupt_super(ctx, journal, 7316a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o &pctx); 7326a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o e2fsck_journal_release(ctx, journal, 0, 1); 7333b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return retval; 7343b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } 7353b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 7363b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o /* 7373b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o * We want to make the flags consistent here. We will not leave with 7383b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o * needs_recovery set but has_journal clear. We can't get in a loop 7393b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o * with -y, -n, or -p, only if a user isn't making up their mind. 7403b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o */ 7413b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'ono_has_journal: 7425dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o if (!(sb->s_feature_compat & EXT3_FEATURE_COMPAT_HAS_JOURNAL)) { 7435dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o recover = sb->s_feature_incompat & EXT3_FEATURE_INCOMPAT_RECOVER; 7443b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o pctx.str = "inode"; 7453b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (fix_problem(ctx, PR_0_JOURNAL_HAS_JOURNAL, &pctx)) { 7463b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (recover && 7473b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o !fix_problem(ctx, PR_0_JOURNAL_RECOVER_SET, &pctx)) 7483b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o goto no_has_journal; 749d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o /* 750d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o * Need a full fsck if we are releasing a 7518c2dc52180373f4e7b12e92669db59b1a52e2153Theodore Ts'o * journal stored on a reserved inode. 752d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o */ 753d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o force_fsck = recover || 754d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o (sb->s_journal_inum < EXT2_FIRST_INODE(sb)); 755d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o /* Clear all of the journal fields */ 7565dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o sb->s_journal_inum = 0; 757d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o sb->s_journal_dev = 0; 758d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o memset(sb->s_journal_uuid, 0, 759d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o sizeof(sb->s_journal_uuid)); 760d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o e2fsck_clear_recover(ctx, force_fsck); 7613b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } else if (!(ctx->options & E2F_OPT_READONLY)) { 7625dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o sb->s_feature_compat |= EXT3_FEATURE_COMPAT_HAS_JOURNAL; 7630cfce7f749ea519522929d91e705cf90518594c4Theodore Ts'o ctx->fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY; 7643b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o ext2fs_mark_super_dirty(ctx->fs); 7653b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } 7663b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } 7673b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 7685dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o if (sb->s_feature_compat & EXT3_FEATURE_COMPAT_HAS_JOURNAL && 7695dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o !(sb->s_feature_incompat & EXT3_FEATURE_INCOMPAT_RECOVER) && 7703b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o journal->j_superblock->s_start != 0) { 771d37066a9fa14ff3c0e7f4ea95e07204fce95f41aTheodore Ts'o /* Print status information */ 772d37066a9fa14ff3c0e7f4ea95e07204fce95f41aTheodore Ts'o fix_problem(ctx, PR_0_JOURNAL_RECOVERY_CLEAR, &pctx); 773d37066a9fa14ff3c0e7f4ea95e07204fce95f41aTheodore Ts'o if (ctx->superblock) 774d37066a9fa14ff3c0e7f4ea95e07204fce95f41aTheodore Ts'o problem = PR_0_JOURNAL_RUN_DEFAULT; 775d37066a9fa14ff3c0e7f4ea95e07204fce95f41aTheodore Ts'o else 776d37066a9fa14ff3c0e7f4ea95e07204fce95f41aTheodore Ts'o problem = PR_0_JOURNAL_RUN; 777d37066a9fa14ff3c0e7f4ea95e07204fce95f41aTheodore Ts'o if (fix_problem(ctx, problem, &pctx)) { 778d37066a9fa14ff3c0e7f4ea95e07204fce95f41aTheodore Ts'o ctx->options |= E2F_OPT_FORCE; 779d37066a9fa14ff3c0e7f4ea95e07204fce95f41aTheodore Ts'o sb->s_feature_incompat |= 780d37066a9fa14ff3c0e7f4ea95e07204fce95f41aTheodore Ts'o EXT3_FEATURE_INCOMPAT_RECOVER; 781d37066a9fa14ff3c0e7f4ea95e07204fce95f41aTheodore Ts'o ext2fs_mark_super_dirty(ctx->fs); 782d37066a9fa14ff3c0e7f4ea95e07204fce95f41aTheodore Ts'o } else if (fix_problem(ctx, 783d37066a9fa14ff3c0e7f4ea95e07204fce95f41aTheodore Ts'o PR_0_JOURNAL_RESET_JOURNAL, &pctx)) { 7843b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o reset = 1; 785d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o sb->s_state &= ~EXT2_VALID_FS; 786d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o ext2fs_mark_super_dirty(ctx->fs); 787d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o } 788d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o /* 789d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o * If the user answers no to the above question, we 790d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o * ignore the fact that journal apparently has data; 791d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o * accidentally replaying over valid data would be far 792d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o * worse than skipping a questionable recovery. 793efc6f628e15de95bcd13e4f0ee223cb42115d520Theodore Ts'o * 794d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o * XXX should we abort with a fatal error here? What 795d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o * will the ext3 kernel code do if a filesystem with 796d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o * !NEEDS_RECOVERY but with a non-zero 797d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o * journal->j_superblock->s_start is mounted? 798d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o */ 7993b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } 8003b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 8016a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o e2fsck_journal_release(ctx, journal, reset, 0); 8023b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return retval; 8033b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o} 8043b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 8056a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'ostatic errcode_t recover_ext3_journal(e2fsck_t ctx) 8063b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o{ 807185c4aeaf23d48375e3506218305031663203d0fTheodore Ts'o struct problem_context pctx; 8083b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o journal_t *journal; 8093b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o int retval; 8103b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 811185c4aeaf23d48375e3506218305031663203d0fTheodore Ts'o clear_problem_context(&pctx); 812185c4aeaf23d48375e3506218305031663203d0fTheodore Ts'o 8138cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o journal_init_revoke_caches(); 8143b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o retval = e2fsck_get_journal(ctx, &journal); 8153b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (retval) 816ecf1b7767e1772f4c6dba8f02026057ed05397bdTheodore Ts'o return retval; 817ecf1b7767e1772f4c6dba8f02026057ed05397bdTheodore Ts'o 8183b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o retval = e2fsck_journal_load(journal); 8193b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (retval) 8206a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o goto errout; 8213b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 8220e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o retval = journal_init_revoke(journal, 1024); 8230e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o if (retval) 8246a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o goto errout; 825efc6f628e15de95bcd13e4f0ee223cb42115d520Theodore Ts'o 8263b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o retval = -journal_recover(journal); 827c0a083fac3b8f03ae15f5bf30c230c015538051eTheodore Ts'o if (retval) 828c0a083fac3b8f03ae15f5bf30c230c015538051eTheodore Ts'o goto errout; 829efc6f628e15de95bcd13e4f0ee223cb42115d520Theodore Ts'o 830185c4aeaf23d48375e3506218305031663203d0fTheodore Ts'o if (journal->j_failed_commit) { 831185c4aeaf23d48375e3506218305031663203d0fTheodore Ts'o pctx.ino = journal->j_failed_commit; 832185c4aeaf23d48375e3506218305031663203d0fTheodore Ts'o fix_problem(ctx, PR_0_JNL_TXN_CORRUPT, &pctx); 833185c4aeaf23d48375e3506218305031663203d0fTheodore Ts'o ctx->fs->super->s_state |= EXT2_ERROR_FS; 834185c4aeaf23d48375e3506218305031663203d0fTheodore Ts'o ext2fs_mark_super_dirty(ctx->fs); 835185c4aeaf23d48375e3506218305031663203d0fTheodore Ts'o } 836185c4aeaf23d48375e3506218305031663203d0fTheodore Ts'o 837185c4aeaf23d48375e3506218305031663203d0fTheodore Ts'o 838c0a083fac3b8f03ae15f5bf30c230c015538051eTheodore Ts'o if (journal->j_superblock->s_errno) { 839c0a083fac3b8f03ae15f5bf30c230c015538051eTheodore Ts'o ctx->fs->super->s_state |= EXT2_ERROR_FS; 840c0a083fac3b8f03ae15f5bf30c230c015538051eTheodore Ts'o ext2fs_mark_super_dirty(ctx->fs); 841c0a083fac3b8f03ae15f5bf30c230c015538051eTheodore Ts'o journal->j_superblock->s_errno = 0; 8428cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o mark_buffer_dirty(journal->j_sb_buffer); 843c0a083fac3b8f03ae15f5bf30c230c015538051eTheodore Ts'o } 844efc6f628e15de95bcd13e4f0ee223cb42115d520Theodore Ts'o 8456a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'oerrout: 846d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o journal_destroy_revoke(journal); 8478cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o journal_destroy_revoke_caches(); 8486a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o e2fsck_journal_release(ctx, journal, 1, 0); 8493b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return retval; 8503b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o} 8513b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 85280bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'oint e2fsck_run_ext3_journal(e2fsck_t ctx) 85380bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o{ 85480bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o io_manager io_ptr = ctx->fs->io->manager; 85580bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o int blocksize = ctx->fs->blocksize; 856ecf1b7767e1772f4c6dba8f02026057ed05397bdTheodore Ts'o errcode_t retval, recover_retval; 85727a407df546eafa54f3f50c470e3a0a4c788fae5Theodore Ts'o io_stats stats = 0; 85827a407df546eafa54f3f50c470e3a0a4c788fae5Theodore Ts'o unsigned long long kbytes_written = 0; 8598394902e04e64ed10ca81e869892c00143ee4931Theodore Ts'o 8608394902e04e64ed10ca81e869892c00143ee4931Theodore Ts'o printf(_("%s: recovering journal\n"), ctx->device_name); 861ecf1b7767e1772f4c6dba8f02026057ed05397bdTheodore Ts'o if (ctx->options & E2F_OPT_READONLY) { 8628394902e04e64ed10ca81e869892c00143ee4931Theodore Ts'o printf(_("%s: won't do journal recovery while read-only\n"), 863ecf1b7767e1772f4c6dba8f02026057ed05397bdTheodore Ts'o ctx->device_name); 864ecf1b7767e1772f4c6dba8f02026057ed05397bdTheodore Ts'o return EXT2_ET_FILE_RO; 865ecf1b7767e1772f4c6dba8f02026057ed05397bdTheodore Ts'o } 866ecf1b7767e1772f4c6dba8f02026057ed05397bdTheodore Ts'o 8670f2cfe25796bd53b920b1607410bf94251f17fbcTheodore Ts'o if (ctx->fs->flags & EXT2_FLAG_DIRTY) 8683c6b8977d44c66f0a50dd77c18a78b57b1022f8cTheodore Ts'o ext2fs_flush(ctx->fs); /* Force out any modifications */ 869d051521278790e5fc7d97d59bb3be6b662a76365Theodore Ts'o 870ecf1b7767e1772f4c6dba8f02026057ed05397bdTheodore Ts'o recover_retval = recover_ext3_journal(ctx); 871efc6f628e15de95bcd13e4f0ee223cb42115d520Theodore Ts'o 87280bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o /* 87380bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o * Reload the filesystem context to get up-to-date data from disk 87480bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o * because journal recovery will change the filesystem under us. 87580bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o */ 87627a407df546eafa54f3f50c470e3a0a4c788fae5Theodore Ts'o if (ctx->fs->super->s_kbytes_written && 87727a407df546eafa54f3f50c470e3a0a4c788fae5Theodore Ts'o ctx->fs->io->manager->get_stats) 87827a407df546eafa54f3f50c470e3a0a4c788fae5Theodore Ts'o ctx->fs->io->manager->get_stats(ctx->fs->io, &stats); 87927a407df546eafa54f3f50c470e3a0a4c788fae5Theodore Ts'o if (stats && stats->bytes_written) 88027a407df546eafa54f3f50c470e3a0a4c788fae5Theodore Ts'o kbytes_written = stats->bytes_written >> 10; 88127a407df546eafa54f3f50c470e3a0a4c788fae5Theodore Ts'o ext2fs_free(ctx->fs); 882ecf1b7767e1772f4c6dba8f02026057ed05397bdTheodore Ts'o retval = ext2fs_open(ctx->filesystem_name, EXT2_FLAG_RW, 88380bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o ctx->superblock, blocksize, io_ptr, 88480bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o &ctx->fs); 88580bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o if (retval) { 88680bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o com_err(ctx->program_name, retval, 88780bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o _("while trying to re-open %s"), 88880bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o ctx->device_name); 88999a2cc969fb47e8c87965aa9fb93cabf6fe4ac1eTheodore Ts'o fatal_error(ctx, 0); 89080bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o } 89180bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o ctx->fs->priv_data = ctx; 8928dceb92407f751d1a8aecd4bfb36d1fe2dc3cf9aTheodore Ts'o ctx->fs->now = ctx->now; 893058ad1c70c9a097d282270c6f76d3c3493e15fe2Theodore Ts'o ctx->fs->flags |= EXT2_FLAG_MASTER_SB_ONLY; 89427a407df546eafa54f3f50c470e3a0a4c788fae5Theodore Ts'o ctx->fs->super->s_kbytes_written += kbytes_written; 89517390c047f5470eec005c5461a7926d03d6bbbe7Theodore Ts'o 896ecf1b7767e1772f4c6dba8f02026057ed05397bdTheodore Ts'o /* Set the superblock flags */ 897ecf1b7767e1772f4c6dba8f02026057ed05397bdTheodore Ts'o e2fsck_clear_recover(ctx, recover_retval); 898ecf1b7767e1772f4c6dba8f02026057ed05397bdTheodore Ts'o return recover_retval; 89917390c047f5470eec005c5461a7926d03d6bbbe7Theodore Ts'o} 900773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o 901773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o/* 902773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o * This function will move the journal inode from a visible file in 903773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o * the filesystem directory hierarchy to the reserved inode if necessary. 904773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o */ 905546a1ff18cc912003883ff67ba3e87c69f700fc4Theodore Ts'ostatic const char * const journal_names[] = { 906773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o ".journal", "journal", ".journal.dat", "journal.dat", 0 }; 907773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o 908773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'ovoid e2fsck_move_ext3_journal(e2fsck_t ctx) 909773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o{ 910773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o struct ext2_super_block *sb = ctx->fs->super; 911773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o struct problem_context pctx; 912773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o struct ext2_inode inode; 913773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o ext2_filsys fs = ctx->fs; 914773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o ext2_ino_t ino; 915773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o errcode_t retval; 916773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o const char * const * cpp; 917773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o int group, mount_flags; 918efc6f628e15de95bcd13e4f0ee223cb42115d520Theodore Ts'o 919a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o clear_problem_context(&pctx); 920a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o 921773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o /* 922773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o * If the filesystem is opened read-only, or there is no 923a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o * journal, then do nothing. 924773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o */ 925773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o if ((ctx->options & E2F_OPT_READONLY) || 926773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o (sb->s_journal_inum == 0) || 927773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o !(sb->s_feature_compat & EXT3_FEATURE_COMPAT_HAS_JOURNAL)) 928773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o return; 929773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o 930773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o /* 931a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o * Read in the journal inode 932a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o */ 933a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o if (ext2fs_read_inode(fs, sb->s_journal_inum, &inode) != 0) 934a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o return; 935a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o 936a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o /* 937a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o * If it's necessary to backup the journal inode, do so. 938a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o */ 939a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o if ((sb->s_jnl_backup_type == 0) || 940a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o ((sb->s_jnl_backup_type == EXT3_JNL_BACKUP_BLOCKS) && 941a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o memcmp(inode.i_block, sb->s_jnl_blocks, EXT2_N_BLOCKS*4))) { 942a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o if (fix_problem(ctx, PR_0_BACKUP_JNL, &pctx)) { 943a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o memcpy(sb->s_jnl_blocks, inode.i_block, 944a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o EXT2_N_BLOCKS*4); 945a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o sb->s_jnl_blocks[16] = inode.i_size; 946a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o sb->s_jnl_backup_type = EXT3_JNL_BACKUP_BLOCKS; 947a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o ext2fs_mark_super_dirty(fs); 94827479eb2270c344a0042b4c492337b67a547c393Theodore Ts'o fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY; 949a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o } 950a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o } 951a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o 952a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o /* 953a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o * If the journal is already the hidden inode, then do nothing 954a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o */ 955a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o if (sb->s_journal_inum == EXT2_JOURNAL_INO) 956a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o return; 957efc6f628e15de95bcd13e4f0ee223cb42115d520Theodore Ts'o 958a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o /* 959a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o * The journal inode had better have only one link and not be readable. 960a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o */ 961a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o if (inode.i_links_count != 1) 962a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o return; 963a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o 964a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o /* 965773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o * If the filesystem is mounted, or we can't tell whether 966773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o * or not it's mounted, do nothing. 967773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o */ 968773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o retval = ext2fs_check_if_mounted(ctx->filesystem_name, &mount_flags); 969773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o if (retval || (mount_flags & EXT2_MF_MOUNTED)) 970773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o return; 971773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o 972773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o /* 973773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o * If we can't find the name of the journal inode, then do 974773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o * nothing. 975773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o */ 976773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o for (cpp = journal_names; *cpp; cpp++) { 977773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o retval = ext2fs_lookup(fs, EXT2_ROOT_INO, *cpp, 978773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o strlen(*cpp), 0, &ino); 979773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o if ((retval == 0) && (ino == sb->s_journal_inum)) 980773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o break; 981773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o } 982773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o if (*cpp == 0) 983773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o return; 984773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o 985773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o /* We need the inode bitmap to be loaded */ 986773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o retval = ext2fs_read_bitmaps(fs); 987773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o if (retval) 988773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o return; 989773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o 990773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o pctx.str = *cpp; 991773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o if (!fix_problem(ctx, PR_0_MOVE_JOURNAL, &pctx)) 992773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o return; 993efc6f628e15de95bcd13e4f0ee223cb42115d520Theodore Ts'o 994773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o /* 995773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o * OK, we've done all the checks, let's actually move the 996773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o * journal inode. Errors at this point mean we need to force 997773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o * an ext2 filesystem check. 998773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o */ 999773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o if ((retval = ext2fs_unlink(fs, EXT2_ROOT_INO, *cpp, ino, 0)) != 0) 1000773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o goto err_out; 1001773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o if ((retval = ext2fs_write_inode(fs, EXT2_JOURNAL_INO, &inode)) != 0) 1002773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o goto err_out; 1003773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o sb->s_journal_inum = EXT2_JOURNAL_INO; 1004773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o ext2fs_mark_super_dirty(fs); 100527479eb2270c344a0042b4c492337b67a547c393Theodore Ts'o fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY; 1006773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o inode.i_links_count = 0; 10071f3ad14a5ad5df3ac4012d41ef5d76411cd8fff3Theodore Ts'o inode.i_dtime = ctx->now; 1008773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o if ((retval = ext2fs_write_inode(fs, ino, &inode)) != 0) 1009773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o goto err_out; 1010773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o 1011773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o group = ext2fs_group_of_ino(fs, ino); 1012773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o ext2fs_unmark_inode_bitmap(fs->inode_map, ino); 1013773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o ext2fs_mark_ib_dirty(fs); 1014773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o fs->group_desc[group].bg_free_inodes_count++; 101549a7360ba6b986242d9f0f33e102291d2e0dfb47Jose R. Santos ext2fs_group_desc_csum_set(fs, group); 1016773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o fs->super->s_free_inodes_count++; 1017773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o return; 1018773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o 1019773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'oerr_out: 1020773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o pctx.errcode = retval; 1021773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o fix_problem(ctx, PR_0_ERR_MOVE_JOURNAL, &pctx); 1022773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o fs->super->s_state &= ~EXT2_VALID_FS; 1023773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o ext2fs_mark_super_dirty(fs); 1024773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o return; 1025773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o} 1026773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o 1027b1c52b26a44efeb366402985763c242a4b21aeb1Theodore Ts'o/* 1028b1c52b26a44efeb366402985763c242a4b21aeb1Theodore Ts'o * This function makes sure the superblock hint for the external 1029b1c52b26a44efeb366402985763c242a4b21aeb1Theodore Ts'o * journal is correct. 1030b1c52b26a44efeb366402985763c242a4b21aeb1Theodore Ts'o */ 1031b1c52b26a44efeb366402985763c242a4b21aeb1Theodore Ts'oint e2fsck_fix_ext3_journal_hint(e2fsck_t ctx) 1032b1c52b26a44efeb366402985763c242a4b21aeb1Theodore Ts'o{ 1033b1c52b26a44efeb366402985763c242a4b21aeb1Theodore Ts'o struct ext2_super_block *sb = ctx->fs->super; 1034b1c52b26a44efeb366402985763c242a4b21aeb1Theodore Ts'o struct problem_context pctx; 1035b1c52b26a44efeb366402985763c242a4b21aeb1Theodore Ts'o char uuid[37], *journal_name; 1036b1c52b26a44efeb366402985763c242a4b21aeb1Theodore Ts'o struct stat st; 1037b1c52b26a44efeb366402985763c242a4b21aeb1Theodore Ts'o 1038b1c52b26a44efeb366402985763c242a4b21aeb1Theodore Ts'o if (!(sb->s_feature_compat & EXT3_FEATURE_COMPAT_HAS_JOURNAL) || 1039b1c52b26a44efeb366402985763c242a4b21aeb1Theodore Ts'o uuid_is_null(sb->s_journal_uuid)) 1040b1c52b26a44efeb366402985763c242a4b21aeb1Theodore Ts'o return 0; 1041b1c52b26a44efeb366402985763c242a4b21aeb1Theodore Ts'o 1042b1c52b26a44efeb366402985763c242a4b21aeb1Theodore Ts'o uuid_unparse(sb->s_journal_uuid, uuid); 1043b1c52b26a44efeb366402985763c242a4b21aeb1Theodore Ts'o journal_name = blkid_get_devname(ctx->blkid, "UUID", uuid); 1044b1c52b26a44efeb366402985763c242a4b21aeb1Theodore Ts'o if (!journal_name) 1045b1c52b26a44efeb366402985763c242a4b21aeb1Theodore Ts'o return 0; 1046b1c52b26a44efeb366402985763c242a4b21aeb1Theodore Ts'o 1047b1c52b26a44efeb366402985763c242a4b21aeb1Theodore Ts'o if (stat(journal_name, &st) < 0) 1048b1c52b26a44efeb366402985763c242a4b21aeb1Theodore Ts'o return 0; 1049b1c52b26a44efeb366402985763c242a4b21aeb1Theodore Ts'o 1050b1c52b26a44efeb366402985763c242a4b21aeb1Theodore Ts'o if (st.st_rdev != sb->s_journal_dev) { 1051b1c52b26a44efeb366402985763c242a4b21aeb1Theodore Ts'o clear_problem_context(&pctx); 1052b1c52b26a44efeb366402985763c242a4b21aeb1Theodore Ts'o pctx.num = st.st_rdev; 1053b1c52b26a44efeb366402985763c242a4b21aeb1Theodore Ts'o if (fix_problem(ctx, PR_0_EXTERNAL_JOURNAL_HINT, &pctx)) { 1054b1c52b26a44efeb366402985763c242a4b21aeb1Theodore Ts'o sb->s_journal_dev = st.st_rdev; 1055b1c52b26a44efeb366402985763c242a4b21aeb1Theodore Ts'o ext2fs_mark_super_dirty(ctx->fs); 1056b1c52b26a44efeb366402985763c242a4b21aeb1Theodore Ts'o } 1057b1c52b26a44efeb366402985763c242a4b21aeb1Theodore Ts'o } 1058b1c52b26a44efeb366402985763c242a4b21aeb1Theodore Ts'o 1059b1c52b26a44efeb366402985763c242a4b21aeb1Theodore Ts'o free(journal_name); 1060b1c52b26a44efeb366402985763c242a4b21aeb1Theodore Ts'o return 0; 1061b1c52b26a44efeb366402985763c242a4b21aeb1Theodore Ts'o} 1062