journal.c revision 63b3913dbc0bc7cdf8a63f3bdb0c8d7d605e9a40
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 15d1154eb460efe588eaed3d439c1caaca149fa362Theodore Ts'o#include "config.h" 163b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o#ifdef HAVE_SYS_MOUNT_H 17b34cbddbd66baedc163d36dd281b63ef478f547aMatthias Andree#include <sys/param.h> 183b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o#include <sys/mount.h> 193b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o#define MNT_FL (MS_MGC_VAL | MS_RDONLY) 203b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o#endif 213b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o#ifdef HAVE_SYS_STAT_H 223b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o#include <sys/stat.h> 233b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o#endif 2417390c047f5470eec005c5461a7926d03d6bbbe7Theodore Ts'o 2553ef44c40a3e425d2c700d8fd77a6b655aa121feTheodore Ts'o#define E2FSCK_INCLUDE_INLINE_FUNCS 260e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o#include "jfs_user.h" 273b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o#include "problem.h" 283b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o#include "uuid/uuid.h" 2917390c047f5470eec005c5461a7926d03d6bbbe7Theodore Ts'o 308cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o#ifdef CONFIG_JBD_DEBUG /* Enabled by configure --enable-jfs-debug */ 313b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'ostatic int bh_count = 0; 323b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o#endif 333b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 34d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o/* 35d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o * Define USE_INODE_IO to use the inode_io.c / fileio.c codepaths. 36d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o * This creates a larger static binary, and a smaller binary using 37d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o * shared libraries. It's also probably slightly less CPU-efficient, 38d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o * which is why it's not on by default. But, it's a good way of 39d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o * testing the functions in inode_io.c and fileio.c. 40d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o */ 41d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o#undef USE_INODE_IO 42d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o 43b2f93192a1701855d4f5f05f0087c45e92a35681Theodore Ts'o/* Kernel compatibility functions for handling the journal. These allow us 44b2f93192a1701855d4f5f05f0087c45e92a35681Theodore Ts'o * to use the recovery.c file virtually unchanged from the kernel, so we 45b2f93192a1701855d4f5f05f0087c45e92a35681Theodore Ts'o * don't have to do much to keep kernel and user recovery in sync. 46b2f93192a1701855d4f5f05f0087c45e92a35681Theodore Ts'o */ 473b693d0b03569795d04920a04a0a21e5f64ffedcTheodore Ts'oint journal_bmap(journal_t *journal, blk64_t block, unsigned long long *phys) 483b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o{ 49d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o#ifdef USE_INODE_IO 50d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o *phys = block; 51d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o return 0; 52d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o#else 538cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o struct inode *inode = journal->j_inode; 548cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o errcode_t retval; 556dc64392c052839f373b7bbbb58efa3048bfb355Valerie Aurora Henson blk64_t pblk; 563b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 578cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o if (!inode) { 588cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o *phys = block; 598cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o return 0; 608cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o } 613b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 626dc64392c052839f373b7bbbb58efa3048bfb355Valerie Aurora Henson retval= ext2fs_bmap2(inode->i_ctx->fs, inode->i_ino, 636dc64392c052839f373b7bbbb58efa3048bfb355Valerie Aurora Henson &inode->i_ext2, NULL, 0, block, 0, &pblk); 648cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o *phys = pblk; 658cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o return (retval); 66d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o#endif 673b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o} 683b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 696dc64392c052839f373b7bbbb58efa3048bfb355Valerie Aurora Hensonstruct buffer_head *getblk(kdev_t kdev, blk64_t blocknr, int blocksize) 703b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o{ 713b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o struct buffer_head *bh; 72e35d548b59e24af9f7fc18396e8880df96d1bc51Theodore Ts'o int bufsize = sizeof(*bh) + kdev->k_ctx->fs->blocksize - 73e35d548b59e24af9f7fc18396e8880df96d1bc51Theodore Ts'o sizeof(bh->b_data); 743b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 75e35d548b59e24af9f7fc18396e8880df96d1bc51Theodore Ts'o bh = e2fsck_allocate_memory(kdev->k_ctx, bufsize, "block buffer"); 763b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (!bh) 773b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return NULL; 783b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 79185c4aeaf23d48375e3506218305031663203d0fTheodore Ts'o#ifdef CONFIG_JBD_DEBUG 80185c4aeaf23d48375e3506218305031663203d0fTheodore Ts'o if (journal_enable_debug >= 3) 81185c4aeaf23d48375e3506218305031663203d0fTheodore Ts'o bh_count++; 82185c4aeaf23d48375e3506218305031663203d0fTheodore Ts'o#endif 833b693d0b03569795d04920a04a0a21e5f64ffedcTheodore Ts'o jfs_debug(4, "getblk for block %llu (%d bytes)(total %d)\n", 843b693d0b03569795d04920a04a0a21e5f64ffedcTheodore Ts'o (unsigned long long) blocknr, blocksize, bh_count); 853b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 868cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o bh->b_ctx = kdev->k_ctx; 878cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o if (kdev->k_dev == K_DEV_FS) 888cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o bh->b_io = kdev->k_ctx->fs->io; 89efc6f628e15de95bcd13e4f0ee223cb42115d520Theodore Ts'o else 908cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o bh->b_io = kdev->k_ctx->journal_io; 913b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o bh->b_size = blocksize; 923b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o bh->b_blocknr = blocknr; 933b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 943b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return bh; 953b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o} 963b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 9793effaa456e490c6dfff08287c8f5c652cac8469Theodore Ts'ovoid sync_blockdev(kdev_t kdev) 9893effaa456e490c6dfff08287c8f5c652cac8469Theodore Ts'o{ 9993effaa456e490c6dfff08287c8f5c652cac8469Theodore Ts'o io_channel io; 10093effaa456e490c6dfff08287c8f5c652cac8469Theodore Ts'o 10193effaa456e490c6dfff08287c8f5c652cac8469Theodore Ts'o if (kdev->k_dev == K_DEV_FS) 10293effaa456e490c6dfff08287c8f5c652cac8469Theodore Ts'o io = kdev->k_ctx->fs->io; 103efc6f628e15de95bcd13e4f0ee223cb42115d520Theodore Ts'o else 10493effaa456e490c6dfff08287c8f5c652cac8469Theodore Ts'o io = kdev->k_ctx->journal_io; 10593effaa456e490c6dfff08287c8f5c652cac8469Theodore Ts'o 10693effaa456e490c6dfff08287c8f5c652cac8469Theodore Ts'o io_channel_flush(io); 10793effaa456e490c6dfff08287c8f5c652cac8469Theodore Ts'o} 10893effaa456e490c6dfff08287c8f5c652cac8469Theodore Ts'o 1090e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'ovoid ll_rw_block(int rw, int nr, struct buffer_head *bhp[]) 1103b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o{ 1113b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o int retval; 1120e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o struct buffer_head *bh; 1133b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 1140e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o for (; nr > 0; --nr) { 1150e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o bh = *bhp++; 1160e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o if (rw == READ && !bh->b_uptodate) { 1173b693d0b03569795d04920a04a0a21e5f64ffedcTheodore Ts'o jfs_debug(3, "reading block %llu/%p\n", 1183b693d0b03569795d04920a04a0a21e5f64ffedcTheodore Ts'o bh->b_blocknr, (void *) bh); 11924a117abd0340d247befbf7687ffb70547fdf218Valerie Aurora Henson retval = io_channel_read_blk64(bh->b_io, 1200e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o bh->b_blocknr, 1210e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o 1, bh->b_data); 1220e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o if (retval) { 1230e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o com_err(bh->b_ctx->device_name, retval, 1243b693d0b03569795d04920a04a0a21e5f64ffedcTheodore Ts'o "while reading block %llu\n", 1253b693d0b03569795d04920a04a0a21e5f64ffedcTheodore Ts'o bh->b_blocknr); 1260e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o bh->b_err = retval; 1270e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o continue; 1280e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o } 1290e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o bh->b_uptodate = 1; 1300e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o } else if (rw == WRITE && bh->b_dirty) { 1313b693d0b03569795d04920a04a0a21e5f64ffedcTheodore Ts'o jfs_debug(3, "writing block %llu/%p\n", 1323b693d0b03569795d04920a04a0a21e5f64ffedcTheodore Ts'o bh->b_blocknr, 1333b693d0b03569795d04920a04a0a21e5f64ffedcTheodore Ts'o (void *) bh); 13424a117abd0340d247befbf7687ffb70547fdf218Valerie Aurora Henson retval = io_channel_write_blk64(bh->b_io, 1350e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o bh->b_blocknr, 1360e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o 1, bh->b_data); 1370e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o if (retval) { 1380e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o com_err(bh->b_ctx->device_name, retval, 1393b693d0b03569795d04920a04a0a21e5f64ffedcTheodore Ts'o "while writing block %llu\n", 1403b693d0b03569795d04920a04a0a21e5f64ffedcTheodore Ts'o bh->b_blocknr); 1410e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o bh->b_err = retval; 1420e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o continue; 1430e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o } 1440e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o bh->b_dirty = 0; 1450e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o bh->b_uptodate = 1; 146b969b1b8a5c13992cadb026114731958644540d8Matthias Andree } else { 1473b693d0b03569795d04920a04a0a21e5f64ffedcTheodore Ts'o jfs_debug(3, "no-op %s for block %llu\n", 148efc6f628e15de95bcd13e4f0ee223cb42115d520Theodore Ts'o rw == READ ? "read" : "write", 1493b693d0b03569795d04920a04a0a21e5f64ffedcTheodore Ts'o bh->b_blocknr); 150b969b1b8a5c13992cadb026114731958644540d8Matthias Andree } 1510e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o } 1523b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o} 1533b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 1548cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'ovoid mark_buffer_dirty(struct buffer_head *bh) 1553b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o{ 1568cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o bh->b_dirty = 1; 1573b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o} 1583b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 1596a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'ostatic void mark_buffer_clean(struct buffer_head * bh) 1606a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o{ 1616a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o bh->b_dirty = 0; 1626a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o} 1636a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o 1643b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'ovoid brelse(struct buffer_head *bh) 1653b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o{ 1663b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (bh->b_dirty) 1670e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o ll_rw_block(WRITE, 1, &bh); 1683b693d0b03569795d04920a04a0a21e5f64ffedcTheodore Ts'o jfs_debug(3, "freeing block %llu/%p (total %d)\n", 1693b693d0b03569795d04920a04a0a21e5f64ffedcTheodore Ts'o bh->b_blocknr, (void *) bh, --bh_count); 170c4e3d3f374b409500e3dd05c0b0eca6ac98a6b4eTheodore Ts'o ext2fs_free_mem(&bh); 1713b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o} 1723b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 1733b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'oint buffer_uptodate(struct buffer_head *bh) 1743b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o{ 1753b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return bh->b_uptodate; 1763b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o} 1773b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 17815986f7931e1fe65621b4defb5522c9bf8da76efTheodore Ts'ovoid mark_buffer_uptodate(struct buffer_head *bh, int val) 17915986f7931e1fe65621b4defb5522c9bf8da76efTheodore Ts'o{ 18015986f7931e1fe65621b4defb5522c9bf8da76efTheodore Ts'o bh->b_uptodate = val; 18115986f7931e1fe65621b4defb5522c9bf8da76efTheodore Ts'o} 18215986f7931e1fe65621b4defb5522c9bf8da76efTheodore Ts'o 1833b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'ovoid wait_on_buffer(struct buffer_head *bh) 1843b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o{ 1853b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (!bh->b_uptodate) 1860e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o ll_rw_block(READ, 1, &bh); 1873b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o} 1883b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 18980bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o 1903b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'ostatic void e2fsck_clear_recover(e2fsck_t ctx, int error) 1913b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o{ 1925dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o ctx->fs->super->s_feature_incompat &= ~EXT3_FEATURE_INCOMPAT_RECOVER; 1933b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 1943b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o /* if we had an error doing journal recovery, we need a full fsck */ 1953b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (error) 1965dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o ctx->fs->super->s_state &= ~EXT2_VALID_FS; 1973b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o ext2fs_mark_super_dirty(ctx->fs); 1983b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o} 1993b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 200051afbe0d7f49429c26d2a7a33f1f3857d07c3d0Theodore Ts'o/* 201051afbe0d7f49429c26d2a7a33f1f3857d07c3d0Theodore Ts'o * This is a helper function to check the validity of the journal. 202051afbe0d7f49429c26d2a7a33f1f3857d07c3d0Theodore Ts'o */ 203051afbe0d7f49429c26d2a7a33f1f3857d07c3d0Theodore Ts'ostruct process_block_struct { 204051afbe0d7f49429c26d2a7a33f1f3857d07c3d0Theodore Ts'o e2_blkcnt_t last_block; 205051afbe0d7f49429c26d2a7a33f1f3857d07c3d0Theodore Ts'o}; 206051afbe0d7f49429c26d2a7a33f1f3857d07c3d0Theodore Ts'o 207051afbe0d7f49429c26d2a7a33f1f3857d07c3d0Theodore Ts'ostatic int process_journal_block(ext2_filsys fs, 2086dc64392c052839f373b7bbbb58efa3048bfb355Valerie Aurora Henson blk64_t *block_nr, 209051afbe0d7f49429c26d2a7a33f1f3857d07c3d0Theodore Ts'o e2_blkcnt_t blockcnt, 2106dc64392c052839f373b7bbbb58efa3048bfb355Valerie Aurora Henson blk64_t ref_block EXT2FS_ATTR((unused)), 211051afbe0d7f49429c26d2a7a33f1f3857d07c3d0Theodore Ts'o int ref_offset EXT2FS_ATTR((unused)), 212051afbe0d7f49429c26d2a7a33f1f3857d07c3d0Theodore Ts'o void *priv_data) 213051afbe0d7f49429c26d2a7a33f1f3857d07c3d0Theodore Ts'o{ 214051afbe0d7f49429c26d2a7a33f1f3857d07c3d0Theodore Ts'o struct process_block_struct *p; 2156dc64392c052839f373b7bbbb58efa3048bfb355Valerie Aurora Henson blk64_t blk = *block_nr; 216051afbe0d7f49429c26d2a7a33f1f3857d07c3d0Theodore Ts'o 217051afbe0d7f49429c26d2a7a33f1f3857d07c3d0Theodore Ts'o p = (struct process_block_struct *) priv_data; 218051afbe0d7f49429c26d2a7a33f1f3857d07c3d0Theodore Ts'o 2195750e5f9246ead0bc2af7da0cb5bcdfc916cace6Eric Sandeen if (!blk || blk < fs->super->s_first_data_block || 2204efbac6fed75c29d3d5f1b676b932754653a2ac5Valerie Aurora Henson blk >= ext2fs_blocks_count(fs->super)) 221051afbe0d7f49429c26d2a7a33f1f3857d07c3d0Theodore Ts'o return BLOCK_ABORT; 222051afbe0d7f49429c26d2a7a33f1f3857d07c3d0Theodore Ts'o 223051afbe0d7f49429c26d2a7a33f1f3857d07c3d0Theodore Ts'o if (blockcnt >= 0) 224051afbe0d7f49429c26d2a7a33f1f3857d07c3d0Theodore Ts'o p->last_block = blockcnt; 225051afbe0d7f49429c26d2a7a33f1f3857d07c3d0Theodore Ts'o return 0; 226051afbe0d7f49429c26d2a7a33f1f3857d07c3d0Theodore Ts'o} 227051afbe0d7f49429c26d2a7a33f1f3857d07c3d0Theodore Ts'o 228d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'ostatic errcode_t e2fsck_get_journal(e2fsck_t ctx, journal_t **ret_journal) 2293b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o{ 230051afbe0d7f49429c26d2a7a33f1f3857d07c3d0Theodore Ts'o struct process_block_struct pb; 231d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o struct ext2_super_block *sb = ctx->fs->super; 232d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o struct ext2_super_block jsuper; 233d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o struct problem_context pctx; 234d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o struct buffer_head *bh; 235d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o struct inode *j_inode = NULL; 236d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o struct kdev_s *dev_fs = NULL, *dev_journal; 2373e69906495d5898849a6154b0311b5d4a84a27aeTheodore Ts'o const char *journal_name = 0; 238d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o journal_t *journal = NULL; 2393e69906495d5898849a6154b0311b5d4a84a27aeTheodore Ts'o errcode_t retval = 0; 2403e69906495d5898849a6154b0311b5d4a84a27aeTheodore Ts'o io_manager io_ptr = 0; 2413b693d0b03569795d04920a04a0a21e5f64ffedcTheodore Ts'o unsigned long long start = 0; 242d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o int ext_journal = 0; 243a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o int tried_backup_jnl = 0; 2442bfe0bdba37bfd0e4378e855377ebaa823846ea3Brian Behlendorf 245d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o clear_problem_context(&pctx); 2462bfe0bdba37bfd0e4378e855377ebaa823846ea3Brian Behlendorf 247d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o journal = e2fsck_allocate_memory(ctx, sizeof(journal_t), "journal"); 248d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o if (!journal) { 2493b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return EXT2_ET_NO_MEMORY; 2503b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } 2513b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 2528cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o dev_fs = e2fsck_allocate_memory(ctx, 2*sizeof(struct kdev_s), "kdev"); 2538cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o if (!dev_fs) { 2548cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o retval = EXT2_ET_NO_MEMORY; 2558cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o goto errout; 2568cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o } 2578cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o dev_journal = dev_fs+1; 2582bfe0bdba37bfd0e4378e855377ebaa823846ea3Brian Behlendorf 2598cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o dev_fs->k_ctx = dev_journal->k_ctx = ctx; 2608cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o dev_fs->k_dev = K_DEV_FS; 2618cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o dev_journal->k_dev = K_DEV_JOURNAL; 2622bfe0bdba37bfd0e4378e855377ebaa823846ea3Brian Behlendorf 263d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o journal->j_dev = dev_journal; 264d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o journal->j_fs_dev = dev_fs; 265d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o journal->j_inode = NULL; 266d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o journal->j_blocksize = ctx->fs->blocksize; 2673b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 268d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o if (uuid_is_null(sb->s_journal_uuid)) { 2692bfe0bdba37bfd0e4378e855377ebaa823846ea3Brian Behlendorf if (!sb->s_journal_inum) { 2702bfe0bdba37bfd0e4378e855377ebaa823846ea3Brian Behlendorf retval = EXT2_ET_BAD_INODE_NUM; 2712bfe0bdba37bfd0e4378e855377ebaa823846ea3Brian Behlendorf goto errout; 2722bfe0bdba37bfd0e4378e855377ebaa823846ea3Brian Behlendorf } 273d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o j_inode = e2fsck_allocate_memory(ctx, sizeof(*j_inode), 274d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o "journal inode"); 275d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o if (!j_inode) { 276d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o retval = EXT2_ET_NO_MEMORY; 277d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o goto errout; 278d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o } 2793b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 280d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o j_inode->i_ctx = ctx; 281d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o j_inode->i_ino = sb->s_journal_inum; 2822bfe0bdba37bfd0e4378e855377ebaa823846ea3Brian Behlendorf 283d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o if ((retval = ext2fs_read_inode(ctx->fs, 284d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o sb->s_journal_inum, 285a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o &j_inode->i_ext2))) { 286a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o try_backup_journal: 287a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o if (sb->s_jnl_backup_type != EXT3_JNL_BACKUP_BLOCKS || 288a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o tried_backup_jnl) 289a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o goto errout; 290a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o memset(&j_inode->i_ext2, 0, sizeof(struct ext2_inode)); 291efc6f628e15de95bcd13e4f0ee223cb42115d520Theodore Ts'o memcpy(&j_inode->i_ext2.i_block[0], sb->s_jnl_blocks, 292a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o EXT2_N_BLOCKS*4); 293931b58e1cb2158c1f5218059cce92e94917ef485Andreas Dilger j_inode->i_ext2.i_size_high = sb->s_jnl_blocks[15]; 294a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o j_inode->i_ext2.i_size = sb->s_jnl_blocks[16]; 295a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o j_inode->i_ext2.i_links_count = 1; 296a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o j_inode->i_ext2.i_mode = LINUX_S_IFREG | 0600; 297051afbe0d7f49429c26d2a7a33f1f3857d07c3d0Theodore Ts'o e2fsck_use_inode_shortcuts(ctx, 1); 298051afbe0d7f49429c26d2a7a33f1f3857d07c3d0Theodore Ts'o ctx->stashed_ino = j_inode->i_ino; 299051afbe0d7f49429c26d2a7a33f1f3857d07c3d0Theodore Ts'o ctx->stashed_inode = &j_inode->i_ext2; 300a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o tried_backup_jnl++; 301a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o } 302d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o if (!j_inode->i_ext2.i_links_count || 303d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o !LINUX_S_ISREG(j_inode->i_ext2.i_mode)) { 304d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o retval = EXT2_ET_NO_JOURNAL; 305a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o goto try_backup_journal; 306d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o } 307931b58e1cb2158c1f5218059cce92e94917ef485Andreas Dilger if (EXT2_I_SIZE(&j_inode->i_ext2) / journal->j_blocksize < 308d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o JFS_MIN_JOURNAL_BLOCKS) { 309d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o retval = EXT2_ET_JOURNAL_TOO_SMALL; 310a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o goto try_backup_journal; 311a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o } 312051afbe0d7f49429c26d2a7a33f1f3857d07c3d0Theodore Ts'o pb.last_block = -1; 3136dc64392c052839f373b7bbbb58efa3048bfb355Valerie Aurora Henson retval = ext2fs_block_iterate3(ctx->fs, j_inode->i_ino, 314efc6f628e15de95bcd13e4f0ee223cb42115d520Theodore Ts'o BLOCK_FLAG_HOLE, 0, 315051afbe0d7f49429c26d2a7a33f1f3857d07c3d0Theodore Ts'o process_journal_block, &pb); 316931b58e1cb2158c1f5218059cce92e94917ef485Andreas Dilger if ((pb.last_block + 1) * ctx->fs->blocksize < 317931b58e1cb2158c1f5218059cce92e94917ef485Andreas Dilger EXT2_I_SIZE(&j_inode->i_ext2)) { 318051afbe0d7f49429c26d2a7a33f1f3857d07c3d0Theodore Ts'o retval = EXT2_ET_JOURNAL_TOO_SMALL; 319051afbe0d7f49429c26d2a7a33f1f3857d07c3d0Theodore Ts'o goto try_backup_journal; 320d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o } 321ded28ac2ab67300f39783184a8f8930b548fc5f0Kalpak Shah if (tried_backup_jnl && !(ctx->options & E2F_OPT_READONLY)) { 322ded28ac2ab67300f39783184a8f8930b548fc5f0Kalpak Shah retval = ext2fs_write_inode(ctx->fs, sb->s_journal_inum, 323ded28ac2ab67300f39783184a8f8930b548fc5f0Kalpak Shah &j_inode->i_ext2); 324ded28ac2ab67300f39783184a8f8930b548fc5f0Kalpak Shah if (retval) 325ded28ac2ab67300f39783184a8f8930b548fc5f0Kalpak Shah goto errout; 326ded28ac2ab67300f39783184a8f8930b548fc5f0Kalpak Shah } 327ded28ac2ab67300f39783184a8f8930b548fc5f0Kalpak Shah 328931b58e1cb2158c1f5218059cce92e94917ef485Andreas Dilger journal->j_maxlen = EXT2_I_SIZE(&j_inode->i_ext2) / 329931b58e1cb2158c1f5218059cce92e94917ef485Andreas Dilger journal->j_blocksize; 3303b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 331d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o#ifdef USE_INODE_IO 332a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o retval = ext2fs_inode_io_intern2(ctx->fs, sb->s_journal_inum, 333a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o &j_inode->i_ext2, 334a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o &journal_name); 335d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o if (retval) 336d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o goto errout; 3373b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 338d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o io_ptr = inode_io_manager; 339d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o#else 340d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o journal->j_inode = j_inode; 341d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o ctx->journal_io = ctx->fs->io; 342d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o if ((retval = journal_bmap(journal, 0, &start)) != 0) 343d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o goto errout; 344d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o#endif 345d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o } else { 346d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o ext_journal = 1; 347f364093b1956def0b0f1d037852cbb645284d5f2Theodore Ts'o if (!ctx->journal_name) { 348f364093b1956def0b0f1d037852cbb645284d5f2Theodore Ts'o char uuid[37]; 349f364093b1956def0b0f1d037852cbb645284d5f2Theodore Ts'o 350f364093b1956def0b0f1d037852cbb645284d5f2Theodore Ts'o uuid_unparse(sb->s_journal_uuid, uuid); 351f364093b1956def0b0f1d037852cbb645284d5f2Theodore Ts'o ctx->journal_name = blkid_get_devname(ctx->blkid, 352f364093b1956def0b0f1d037852cbb645284d5f2Theodore Ts'o "UUID", uuid); 353f364093b1956def0b0f1d037852cbb645284d5f2Theodore Ts'o if (!ctx->journal_name) 354f364093b1956def0b0f1d037852cbb645284d5f2Theodore Ts'o ctx->journal_name = blkid_devno_to_devname(sb->s_journal_dev); 355d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o } 356f364093b1956def0b0f1d037852cbb645284d5f2Theodore Ts'o journal_name = ctx->journal_name; 3572bfe0bdba37bfd0e4378e855377ebaa823846ea3Brian Behlendorf 358d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o if (!journal_name) { 359d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o fix_problem(ctx, PR_0_CANT_FIND_JOURNAL, &pctx); 3602bfe0bdba37bfd0e4378e855377ebaa823846ea3Brian Behlendorf retval = EXT2_ET_LOAD_EXT_JOURNAL; 3612bfe0bdba37bfd0e4378e855377ebaa823846ea3Brian Behlendorf goto errout; 362d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o } 3632bfe0bdba37bfd0e4378e855377ebaa823846ea3Brian Behlendorf 364d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o jfs_debug(1, "Using journal file %s\n", journal_name); 365d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o io_ptr = unix_io_manager; 3663b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } 3673b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 368d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o#if 0 369d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o test_io_backing_manager = io_ptr; 370adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o io_ptr = test_io_manager; 371adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o#endif 372d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o#ifndef USE_INODE_IO 373d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o if (ext_journal) 374d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o#endif 3758718359b4057bf2b998f4ac6125e33f20efe60cbTheodore Ts'o retval = io_ptr->open(journal_name, 3768718359b4057bf2b998f4ac6125e33f20efe60cbTheodore Ts'o IO_FLAG_RW | IO_FLAG_EXCLUSIVE, 377d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o &ctx->journal_io); 3786d222f3217b11c9b27f92b4aafe47bfeb59b81faTheodore Ts'o if (retval) 379d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o goto errout; 380adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o 381d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o io_channel_set_blksize(ctx->journal_io, ctx->fs->blocksize); 382d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o 383d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o if (ext_journal) { 384d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o if (ctx->fs->blocksize == 1024) 385d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o start = 1; 386d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o bh = getblk(dev_journal, start, ctx->fs->blocksize); 387d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o if (!bh) { 388d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o retval = EXT2_ET_NO_MEMORY; 389d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o goto errout; 390d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o } 391d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o ll_rw_block(READ, 1, &bh); 3922aa362f54a9a486ffd495028b95532897551d619Theodore Ts'o if ((retval = bh->b_err) != 0) { 3932aa362f54a9a486ffd495028b95532897551d619Theodore Ts'o brelse(bh); 394d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o goto errout; 3952aa362f54a9a486ffd495028b95532897551d619Theodore Ts'o } 396d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o memcpy(&jsuper, start ? bh->b_data : bh->b_data + 1024, 397d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o sizeof(jsuper)); 398d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o brelse(bh); 3992eae093081a097a0a611fe2817e1533825dfdd86Theodore Ts'o#ifdef WORDS_BIGENDIAN 400efc6f628e15de95bcd13e4f0ee223cb42115d520Theodore Ts'o if (jsuper.s_magic == ext2fs_swab16(EXT2_SUPER_MAGIC)) 401d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o ext2fs_swap_super(&jsuper); 402adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o#endif 403d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o if (jsuper.s_magic != EXT2_SUPER_MAGIC || 404d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o !(jsuper.s_feature_incompat & EXT3_FEATURE_INCOMPAT_JOURNAL_DEV)) { 405d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o fix_problem(ctx, PR_0_EXT_JOURNAL_BAD_SUPER, &pctx); 406d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o retval = EXT2_ET_LOAD_EXT_JOURNAL; 407d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o goto errout; 408d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o } 409d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o /* Make sure the journal UUID is correct */ 410d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o if (memcmp(jsuper.s_uuid, ctx->fs->super->s_journal_uuid, 411d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o sizeof(jsuper.s_uuid))) { 412d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o fix_problem(ctx, PR_0_JOURNAL_BAD_UUID, &pctx); 413d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o retval = EXT2_ET_LOAD_EXT_JOURNAL; 414d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o goto errout; 415d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o } 4162bfe0bdba37bfd0e4378e855377ebaa823846ea3Brian Behlendorf 4174efbac6fed75c29d3d5f1b676b932754653a2ac5Valerie Aurora Henson journal->j_maxlen = ext2fs_blocks_count(&jsuper); 418d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o start++; 4193b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } 4203b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 421d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o if (!(bh = getblk(dev_journal, start, journal->j_blocksize))) { 422adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o retval = EXT2_ET_NO_MEMORY; 423adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o goto errout; 424adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o } 4252bfe0bdba37bfd0e4378e855377ebaa823846ea3Brian Behlendorf 426d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o journal->j_sb_buffer = bh; 427d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o journal->j_superblock = (journal_superblock_t *)bh->b_data; 4282bfe0bdba37bfd0e4378e855377ebaa823846ea3Brian Behlendorf 429d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o#ifdef USE_INODE_IO 430d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o if (j_inode) 431c4e3d3f374b409500e3dd05c0b0eca6ac98a6b4eTheodore Ts'o ext2fs_free_mem(&j_inode); 432d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o#endif 433d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o 434d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o *ret_journal = journal; 435051afbe0d7f49429c26d2a7a33f1f3857d07c3d0Theodore Ts'o e2fsck_use_inode_shortcuts(ctx, 0); 436adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o return 0; 437adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o 438adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'oerrout: 439051afbe0d7f49429c26d2a7a33f1f3857d07c3d0Theodore Ts'o e2fsck_use_inode_shortcuts(ctx, 0); 440d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o if (dev_fs) 441c4e3d3f374b409500e3dd05c0b0eca6ac98a6b4eTheodore Ts'o ext2fs_free_mem(&dev_fs); 442d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o if (j_inode) 443c4e3d3f374b409500e3dd05c0b0eca6ac98a6b4eTheodore Ts'o ext2fs_free_mem(&j_inode); 444d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o if (journal) 445c4e3d3f374b409500e3dd05c0b0eca6ac98a6b4eTheodore Ts'o ext2fs_free_mem(&journal); 446adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o return retval; 4473b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o} 4483b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 4496a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'ostatic errcode_t e2fsck_journal_fix_bad_inode(e2fsck_t ctx, 4506a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o struct problem_context *pctx) 4513b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o{ 4525dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o struct ext2_super_block *sb = ctx->fs->super; 4535dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o int recover = ctx->fs->super->s_feature_incompat & 4545dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o EXT3_FEATURE_INCOMPAT_RECOVER; 4555dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o int has_journal = ctx->fs->super->s_feature_compat & 4565dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o EXT3_FEATURE_COMPAT_HAS_JOURNAL; 4573b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 4585dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o if (has_journal || sb->s_journal_inum) { 4593b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o /* The journal inode is bogus, remove and force full fsck */ 4607e92dfae9e60947a20a2078b7871b073441dac44Theodore Ts'o pctx->ino = sb->s_journal_inum; 4613b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (fix_problem(ctx, PR_0_JOURNAL_BAD_INODE, pctx)) { 4625dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o if (has_journal && sb->s_journal_inum) 4633b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o printf("*** ext3 journal has been deleted - " 4643b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o "filesystem is now ext2 only ***\n\n"); 4655dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o sb->s_feature_compat &= ~EXT3_FEATURE_COMPAT_HAS_JOURNAL; 4665dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o sb->s_journal_inum = 0; 4675107d0d196b9c51cf18380b6996b1074afe51df2Kalpak Shah ctx->flags |= E2F_FLAG_JOURNAL_INODE; 4680cfce7f749ea519522929d91e705cf90518594c4Theodore Ts'o ctx->fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY; 4693b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o e2fsck_clear_recover(ctx, 1); 4703b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return 0; 4713b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } 4723b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return EXT2_ET_BAD_INODE_NUM; 4733b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } else if (recover) { 4743b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (fix_problem(ctx, PR_0_JOURNAL_RECOVER_SET, pctx)) { 4753b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o e2fsck_clear_recover(ctx, 1); 4763b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return 0; 4773b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } 4783b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return EXT2_ET_UNSUPP_FEATURE; 4793b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } 4803b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return 0; 4813b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o} 4823b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 48362e3e7fe4f32c2186e848f37b7f977835975413eTheodore Ts'o#define V1_SB_SIZE 0x0024 48462e3e7fe4f32c2186e848f37b7f977835975413eTheodore Ts'ostatic void clear_v2_journal_fields(journal_t *journal) 48562e3e7fe4f32c2186e848f37b7f977835975413eTheodore Ts'o{ 4868cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o e2fsck_t ctx = journal->j_dev->k_ctx; 48762e3e7fe4f32c2186e848f37b7f977835975413eTheodore Ts'o struct problem_context pctx; 48862e3e7fe4f32c2186e848f37b7f977835975413eTheodore Ts'o 48962e3e7fe4f32c2186e848f37b7f977835975413eTheodore Ts'o clear_problem_context(&pctx); 49062e3e7fe4f32c2186e848f37b7f977835975413eTheodore Ts'o 49162e3e7fe4f32c2186e848f37b7f977835975413eTheodore Ts'o if (!fix_problem(ctx, PR_0_CLEAR_V2_JOURNAL, &pctx)) 49262e3e7fe4f32c2186e848f37b7f977835975413eTheodore Ts'o return; 49362e3e7fe4f32c2186e848f37b7f977835975413eTheodore Ts'o 49462e3e7fe4f32c2186e848f37b7f977835975413eTheodore Ts'o memset(((char *) journal->j_superblock) + V1_SB_SIZE, 0, 49562e3e7fe4f32c2186e848f37b7f977835975413eTheodore Ts'o ctx->fs->blocksize-V1_SB_SIZE); 4968cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o mark_buffer_dirty(journal->j_sb_buffer); 49762e3e7fe4f32c2186e848f37b7f977835975413eTheodore Ts'o} 49862e3e7fe4f32c2186e848f37b7f977835975413eTheodore Ts'o 49962e3e7fe4f32c2186e848f37b7f977835975413eTheodore Ts'o 5006a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'ostatic errcode_t e2fsck_journal_load(journal_t *journal) 5013b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o{ 5028cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o e2fsck_t ctx = journal->j_dev->k_ctx; 5033b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o journal_superblock_t *jsb; 5043b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o struct buffer_head *jbh = journal->j_sb_buffer; 5053b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o struct problem_context pctx; 5063b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 5073b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o clear_problem_context(&pctx); 5083b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 5090e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o ll_rw_block(READ, 1, &jbh); 5103b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (jbh->b_err) { 5113b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o com_err(ctx->device_name, jbh->b_err, 5123b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o _("reading journal superblock\n")); 5133b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return jbh->b_err; 5143b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } 5153b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 5163b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o jsb = journal->j_superblock; 5173b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o /* If we don't even have JFS_MAGIC, we probably have a wrong inode */ 5183b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (jsb->s_header.h_magic != htonl(JFS_MAGIC_NUMBER)) 5193b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return e2fsck_journal_fix_bad_inode(ctx, &pctx); 5203b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 5210e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o switch (ntohl(jsb->s_header.h_blocktype)) { 5220e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o case JFS_SUPERBLOCK_V1: 5230e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o journal->j_format_version = 1; 52462e3e7fe4f32c2186e848f37b7f977835975413eTheodore Ts'o if (jsb->s_feature_compat || 52562e3e7fe4f32c2186e848f37b7f977835975413eTheodore Ts'o jsb->s_feature_incompat || 52662e3e7fe4f32c2186e848f37b7f977835975413eTheodore Ts'o jsb->s_feature_ro_compat || 52762e3e7fe4f32c2186e848f37b7f977835975413eTheodore Ts'o jsb->s_nr_users) 52862e3e7fe4f32c2186e848f37b7f977835975413eTheodore Ts'o clear_v2_journal_fields(journal); 5290e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o break; 530efc6f628e15de95bcd13e4f0ee223cb42115d520Theodore Ts'o 5310e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o case JFS_SUPERBLOCK_V2: 5320e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o journal->j_format_version = 2; 533b3b3d465b1e833af355a41c1c470d8fa3592bc26Gabriel Paubert if (ntohl(jsb->s_nr_users) > 1 && 534a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o uuid_is_null(ctx->fs->super->s_journal_uuid)) 53562e3e7fe4f32c2186e848f37b7f977835975413eTheodore Ts'o clear_v2_journal_fields(journal); 536adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o if (ntohl(jsb->s_nr_users) > 1) { 537adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o fix_problem(ctx, PR_0_JOURNAL_UNSUPP_MULTIFS, &pctx); 538adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o return EXT2_ET_JOURNAL_UNSUPP_VERSION; 539adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o } 5400e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o break; 541c7f23364fd6d8d25d74e51ba5f342fc2230048d8Theodore Ts'o 542c7f23364fd6d8d25d74e51ba5f342fc2230048d8Theodore Ts'o /* 543c7f23364fd6d8d25d74e51ba5f342fc2230048d8Theodore Ts'o * These should never appear in a journal super block, so if 544c7f23364fd6d8d25d74e51ba5f342fc2230048d8Theodore Ts'o * they do, the journal is badly corrupted. 545c7f23364fd6d8d25d74e51ba5f342fc2230048d8Theodore Ts'o */ 546c7f23364fd6d8d25d74e51ba5f342fc2230048d8Theodore Ts'o case JFS_DESCRIPTOR_BLOCK: 547c7f23364fd6d8d25d74e51ba5f342fc2230048d8Theodore Ts'o case JFS_COMMIT_BLOCK: 548c7f23364fd6d8d25d74e51ba5f342fc2230048d8Theodore Ts'o case JFS_REVOKE_BLOCK: 549c7f23364fd6d8d25d74e51ba5f342fc2230048d8Theodore Ts'o return EXT2_ET_CORRUPT_SUPERBLOCK; 550efc6f628e15de95bcd13e4f0ee223cb42115d520Theodore Ts'o 5510e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o /* If we don't understand the superblock major type, but there 5520e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o * is a magic number, then it is likely to be a new format we 5530e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o * just don't understand, so leave it alone. */ 5540e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o default: 555c7f23364fd6d8d25d74e51ba5f342fc2230048d8Theodore Ts'o return EXT2_ET_JOURNAL_UNSUPP_VERSION; 5560e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o } 5570e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o 5582f686ace1c8e2f680ffd450d143cdd01a649687aTheodore Ts'o if (JFS_HAS_INCOMPAT_FEATURE(journal, ~JFS_KNOWN_INCOMPAT_FEATURES)) 5592f686ace1c8e2f680ffd450d143cdd01a649687aTheodore Ts'o return EXT2_ET_UNSUPP_FEATURE; 560efc6f628e15de95bcd13e4f0ee223cb42115d520Theodore Ts'o 5612f686ace1c8e2f680ffd450d143cdd01a649687aTheodore Ts'o if (JFS_HAS_RO_COMPAT_FEATURE(journal, ~JFS_KNOWN_ROCOMPAT_FEATURES)) 5622f686ace1c8e2f680ffd450d143cdd01a649687aTheodore Ts'o return EXT2_ET_RO_UNSUPP_FEATURE; 5633b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 5640e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o /* We have now checked whether we know enough about the journal 5650e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o * format to be able to proceed safely, so any other checks that 5660e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o * fail we should attempt to recover from. */ 5670e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o if (jsb->s_blocksize != htonl(journal->j_blocksize)) { 5680e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o com_err(ctx->program_name, EXT2_ET_CORRUPT_SUPERBLOCK, 5690e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o _("%s: no valid journal superblock found\n"), 5700e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o ctx->device_name); 5710e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o return EXT2_ET_CORRUPT_SUPERBLOCK; 5723b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } 5733b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 5743b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (ntohl(jsb->s_maxlen) < journal->j_maxlen) 5753b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o journal->j_maxlen = ntohl(jsb->s_maxlen); 5763b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o else if (ntohl(jsb->s_maxlen) > journal->j_maxlen) { 5770e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o com_err(ctx->program_name, EXT2_ET_CORRUPT_SUPERBLOCK, 5780e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o _("%s: journal too short\n"), 5790e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o ctx->device_name); 5803b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return EXT2_ET_CORRUPT_SUPERBLOCK; 5813b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } 5823b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 5833b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o journal->j_tail_sequence = ntohl(jsb->s_sequence); 584ecf1b7767e1772f4c6dba8f02026057ed05397bdTheodore Ts'o journal->j_transaction_sequence = journal->j_tail_sequence; 5853b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o journal->j_tail = ntohl(jsb->s_start); 5863b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o journal->j_first = ntohl(jsb->s_first); 5873b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o journal->j_last = ntohl(jsb->s_maxlen); 5883b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 5893b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return 0; 5903b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o} 5913b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 59253ef44c40a3e425d2c700d8fd77a6b655aa121feTheodore Ts'ostatic void e2fsck_journal_reset_super(e2fsck_t ctx, journal_superblock_t *jsb, 5936a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o journal_t *journal) 5943b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o{ 5950e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o char *p; 596424cd2beb7c40a3e4cf96b5bf28b24e48554a754Theodore Ts'o union { 597424cd2beb7c40a3e4cf96b5bf28b24e48554a754Theodore Ts'o uuid_t uuid; 598424cd2beb7c40a3e4cf96b5bf28b24e48554a754Theodore Ts'o __u32 val[4]; 599424cd2beb7c40a3e4cf96b5bf28b24e48554a754Theodore Ts'o } u; 600424cd2beb7c40a3e4cf96b5bf28b24e48554a754Theodore Ts'o __u32 new_seq = 0; 601424cd2beb7c40a3e4cf96b5bf28b24e48554a754Theodore Ts'o int i; 602424cd2beb7c40a3e4cf96b5bf28b24e48554a754Theodore Ts'o 6030e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o /* Leave a valid existing V1 superblock signature alone. 6040e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o * Anything unrecognisable we overwrite with a new V2 6050e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o * signature. */ 606efc6f628e15de95bcd13e4f0ee223cb42115d520Theodore Ts'o 6070e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o if (jsb->s_header.h_magic != htonl(JFS_MAGIC_NUMBER) || 6080e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o jsb->s_header.h_blocktype != htonl(JFS_SUPERBLOCK_V1)) { 6090e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o jsb->s_header.h_magic = htonl(JFS_MAGIC_NUMBER); 6100e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o jsb->s_header.h_blocktype = htonl(JFS_SUPERBLOCK_V2); 6110e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o } 6120e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o 6130e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o /* Zero out everything else beyond the superblock header */ 614efc6f628e15de95bcd13e4f0ee223cb42115d520Theodore Ts'o 6150e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o p = ((char *) jsb) + sizeof(journal_header_t); 6160e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o memset (p, 0, ctx->fs->blocksize-sizeof(journal_header_t)); 6170e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o 6183b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o jsb->s_blocksize = htonl(ctx->fs->blocksize); 6190e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o jsb->s_maxlen = htonl(journal->j_maxlen); 6200e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o jsb->s_first = htonl(1); 6210e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o 622424cd2beb7c40a3e4cf96b5bf28b24e48554a754Theodore Ts'o /* Initialize the journal sequence number so that there is "no" 623424cd2beb7c40a3e4cf96b5bf28b24e48554a754Theodore Ts'o * chance we will find old "valid" transactions in the journal. 624424cd2beb7c40a3e4cf96b5bf28b24e48554a754Theodore Ts'o * This avoids the need to zero the whole journal (slow to do, 625424cd2beb7c40a3e4cf96b5bf28b24e48554a754Theodore Ts'o * and risky when we are just recovering the filesystem). 626424cd2beb7c40a3e4cf96b5bf28b24e48554a754Theodore Ts'o */ 627424cd2beb7c40a3e4cf96b5bf28b24e48554a754Theodore Ts'o uuid_generate(u.uuid); 628424cd2beb7c40a3e4cf96b5bf28b24e48554a754Theodore Ts'o for (i = 0; i < 4; i ++) 629424cd2beb7c40a3e4cf96b5bf28b24e48554a754Theodore Ts'o new_seq ^= u.val[i]; 630424cd2beb7c40a3e4cf96b5bf28b24e48554a754Theodore Ts'o jsb->s_sequence = htonl(new_seq); 6310e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o 6328cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o mark_buffer_dirty(journal->j_sb_buffer); 6330e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o ll_rw_block(WRITE, 1, &journal->j_sb_buffer); 6343b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o} 6353b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 6366a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'ostatic errcode_t e2fsck_journal_fix_corrupt_super(e2fsck_t ctx, 6376a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o journal_t *journal, 6386a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o struct problem_context *pctx) 6393b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o{ 6405dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o struct ext2_super_block *sb = ctx->fs->super; 6415dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o int recover = ctx->fs->super->s_feature_incompat & 6425dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o EXT3_FEATURE_INCOMPAT_RECOVER; 6433b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 6445dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o if (sb->s_feature_compat & EXT3_FEATURE_COMPAT_HAS_JOURNAL) { 6453b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (fix_problem(ctx, PR_0_JOURNAL_BAD_SUPER, pctx)) { 646b2f93192a1701855d4f5f05f0087c45e92a35681Theodore Ts'o e2fsck_journal_reset_super(ctx, journal->j_superblock, 647b2f93192a1701855d4f5f05f0087c45e92a35681Theodore Ts'o journal); 6483b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o journal->j_transaction_sequence = 1; 6493b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o e2fsck_clear_recover(ctx, recover); 6503b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return 0; 6513b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } 6523b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return EXT2_ET_CORRUPT_SUPERBLOCK; 6533b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } else if (e2fsck_journal_fix_bad_inode(ctx, pctx)) 6543b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return EXT2_ET_CORRUPT_SUPERBLOCK; 6553b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 6563b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return 0; 6573b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o} 6583b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 6596a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'ostatic void e2fsck_journal_release(e2fsck_t ctx, journal_t *journal, 6606a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o int reset, int drop) 6613b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o{ 6623b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o journal_superblock_t *jsb; 6633b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 6646a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o if (drop) 6656a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o mark_buffer_clean(journal->j_sb_buffer); 6666a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o else if (!(ctx->options & E2F_OPT_READONLY)) { 6673b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o jsb = journal->j_superblock; 6683b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o jsb->s_sequence = htonl(journal->j_transaction_sequence); 6693b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (reset) 6703b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o jsb->s_start = 0; /* this marks the journal as empty */ 6718cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o mark_buffer_dirty(journal->j_sb_buffer); 6723b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } 6733b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o brelse(journal->j_sb_buffer); 6743b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 6756d222f3217b11c9b27f92b4aafe47bfeb59b81faTheodore Ts'o if (ctx->journal_io) { 6766d222f3217b11c9b27f92b4aafe47bfeb59b81faTheodore Ts'o if (ctx->fs && ctx->fs->io != ctx->journal_io) 6776d222f3217b11c9b27f92b4aafe47bfeb59b81faTheodore Ts'o io_channel_close(ctx->journal_io); 6786d222f3217b11c9b27f92b4aafe47bfeb59b81faTheodore Ts'o ctx->journal_io = 0; 6796d222f3217b11c9b27f92b4aafe47bfeb59b81faTheodore Ts'o } 680efc6f628e15de95bcd13e4f0ee223cb42115d520Theodore Ts'o 681d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o#ifndef USE_INODE_IO 6823b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (journal->j_inode) 683c4e3d3f374b409500e3dd05c0b0eca6ac98a6b4eTheodore Ts'o ext2fs_free_mem(&journal->j_inode); 684d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o#endif 685d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o if (journal->j_fs_dev) 686c4e3d3f374b409500e3dd05c0b0eca6ac98a6b4eTheodore Ts'o ext2fs_free_mem(&journal->j_fs_dev); 687c4e3d3f374b409500e3dd05c0b0eca6ac98a6b4eTheodore Ts'o ext2fs_free_mem(&journal); 6883b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o} 6893b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 6909b5657591b1db9b82fe433f3f90e496f3df6a851Theodore Ts'o/* 6919b5657591b1db9b82fe433f3f90e496f3df6a851Theodore Ts'o * This function makes sure that the superblock fields regarding the 6929b5657591b1db9b82fe433f3f90e496f3df6a851Theodore Ts'o * journal are consistent. 6939b5657591b1db9b82fe433f3f90e496f3df6a851Theodore Ts'o */ 6943b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'oint e2fsck_check_ext3_journal(e2fsck_t ctx) 6953b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o{ 6965dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o struct ext2_super_block *sb = ctx->fs->super; 6973b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o journal_t *journal; 6985dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o int recover = ctx->fs->super->s_feature_incompat & 6995dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o EXT3_FEATURE_INCOMPAT_RECOVER; 7003b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o struct problem_context pctx; 701d37066a9fa14ff3c0e7f4ea95e07204fce95f41aTheodore Ts'o problem_t problem; 702d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o int reset = 0, force_fsck = 0; 7033b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o int retval; 7043b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 7053b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o /* If we don't have any journal features, don't do anything more */ 7065dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o if (!(sb->s_feature_compat & EXT3_FEATURE_COMPAT_HAS_JOURNAL) && 7075dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o !recover && sb->s_journal_inum == 0 && sb->s_journal_dev == 0 && 7085dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o uuid_is_null(sb->s_journal_uuid)) 7099b5657591b1db9b82fe433f3f90e496f3df6a851Theodore Ts'o return 0; 7103b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 7113b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o clear_problem_context(&pctx); 7125dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o pctx.num = sb->s_journal_inum; 7133b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 7143b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o retval = e2fsck_get_journal(ctx, &journal); 7153b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (retval) { 716f2d5c937034e6c07391549ef6d46b2c8db086c85Theodore Ts'o if ((retval == EXT2_ET_BAD_INODE_NUM) || 7176e4fbbeb500d6aa7aaa193f689356c487d461edeRichard Mortimer (retval == EXT2_ET_BAD_BLOCK_NUM) || 718f2d5c937034e6c07391549ef6d46b2c8db086c85Theodore Ts'o (retval == EXT2_ET_JOURNAL_TOO_SMALL) || 719f2d5c937034e6c07391549ef6d46b2c8db086c85Theodore Ts'o (retval == EXT2_ET_NO_JOURNAL)) 7203b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return e2fsck_journal_fix_bad_inode(ctx, &pctx); 7213b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return retval; 7223b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } 7233b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 7243b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o retval = e2fsck_journal_load(journal); 7253b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (retval) { 726c7f23364fd6d8d25d74e51ba5f342fc2230048d8Theodore Ts'o if ((retval == EXT2_ET_CORRUPT_SUPERBLOCK) || 7272f686ace1c8e2f680ffd450d143cdd01a649687aTheodore Ts'o ((retval == EXT2_ET_UNSUPP_FEATURE) && 7282f686ace1c8e2f680ffd450d143cdd01a649687aTheodore Ts'o (!fix_problem(ctx, PR_0_JOURNAL_UNSUPP_INCOMPAT, 7292f686ace1c8e2f680ffd450d143cdd01a649687aTheodore Ts'o &pctx))) || 7302f686ace1c8e2f680ffd450d143cdd01a649687aTheodore Ts'o ((retval == EXT2_ET_RO_UNSUPP_FEATURE) && 7312f686ace1c8e2f680ffd450d143cdd01a649687aTheodore Ts'o (!fix_problem(ctx, PR_0_JOURNAL_UNSUPP_ROCOMPAT, 7322f686ace1c8e2f680ffd450d143cdd01a649687aTheodore Ts'o &pctx))) || 733c7f23364fd6d8d25d74e51ba5f342fc2230048d8Theodore Ts'o ((retval == EXT2_ET_JOURNAL_UNSUPP_VERSION) && 734c7f23364fd6d8d25d74e51ba5f342fc2230048d8Theodore Ts'o (!fix_problem(ctx, PR_0_JOURNAL_UNSUPP_VERSION, &pctx)))) 7356a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o retval = e2fsck_journal_fix_corrupt_super(ctx, journal, 7366a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o &pctx); 7376a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o e2fsck_journal_release(ctx, journal, 0, 1); 7383b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return retval; 7393b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } 7403b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 7413b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o /* 7423b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o * We want to make the flags consistent here. We will not leave with 7433b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o * needs_recovery set but has_journal clear. We can't get in a loop 7443b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o * with -y, -n, or -p, only if a user isn't making up their mind. 7453b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o */ 7463b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'ono_has_journal: 7475dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o if (!(sb->s_feature_compat & EXT3_FEATURE_COMPAT_HAS_JOURNAL)) { 7485dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o recover = sb->s_feature_incompat & EXT3_FEATURE_INCOMPAT_RECOVER; 7493b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o pctx.str = "inode"; 7503b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (fix_problem(ctx, PR_0_JOURNAL_HAS_JOURNAL, &pctx)) { 7513b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (recover && 7523b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o !fix_problem(ctx, PR_0_JOURNAL_RECOVER_SET, &pctx)) 7533b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o goto no_has_journal; 754d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o /* 755d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o * Need a full fsck if we are releasing a 7568c2dc52180373f4e7b12e92669db59b1a52e2153Theodore Ts'o * journal stored on a reserved inode. 757d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o */ 758d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o force_fsck = recover || 759d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o (sb->s_journal_inum < EXT2_FIRST_INODE(sb)); 760d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o /* Clear all of the journal fields */ 7615dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o sb->s_journal_inum = 0; 762d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o sb->s_journal_dev = 0; 763d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o memset(sb->s_journal_uuid, 0, 764d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o sizeof(sb->s_journal_uuid)); 765d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o e2fsck_clear_recover(ctx, force_fsck); 7663b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } else if (!(ctx->options & E2F_OPT_READONLY)) { 7675dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o sb->s_feature_compat |= EXT3_FEATURE_COMPAT_HAS_JOURNAL; 7680cfce7f749ea519522929d91e705cf90518594c4Theodore Ts'o ctx->fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY; 7693b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o ext2fs_mark_super_dirty(ctx->fs); 7703b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } 7713b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } 7723b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 7735dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o if (sb->s_feature_compat & EXT3_FEATURE_COMPAT_HAS_JOURNAL && 7745dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o !(sb->s_feature_incompat & EXT3_FEATURE_INCOMPAT_RECOVER) && 7753b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o journal->j_superblock->s_start != 0) { 776d37066a9fa14ff3c0e7f4ea95e07204fce95f41aTheodore Ts'o /* Print status information */ 777d37066a9fa14ff3c0e7f4ea95e07204fce95f41aTheodore Ts'o fix_problem(ctx, PR_0_JOURNAL_RECOVERY_CLEAR, &pctx); 778d37066a9fa14ff3c0e7f4ea95e07204fce95f41aTheodore Ts'o if (ctx->superblock) 779d37066a9fa14ff3c0e7f4ea95e07204fce95f41aTheodore Ts'o problem = PR_0_JOURNAL_RUN_DEFAULT; 780d37066a9fa14ff3c0e7f4ea95e07204fce95f41aTheodore Ts'o else 781d37066a9fa14ff3c0e7f4ea95e07204fce95f41aTheodore Ts'o problem = PR_0_JOURNAL_RUN; 782d37066a9fa14ff3c0e7f4ea95e07204fce95f41aTheodore Ts'o if (fix_problem(ctx, problem, &pctx)) { 783d37066a9fa14ff3c0e7f4ea95e07204fce95f41aTheodore Ts'o ctx->options |= E2F_OPT_FORCE; 784d37066a9fa14ff3c0e7f4ea95e07204fce95f41aTheodore Ts'o sb->s_feature_incompat |= 785d37066a9fa14ff3c0e7f4ea95e07204fce95f41aTheodore Ts'o EXT3_FEATURE_INCOMPAT_RECOVER; 786d37066a9fa14ff3c0e7f4ea95e07204fce95f41aTheodore Ts'o ext2fs_mark_super_dirty(ctx->fs); 787d37066a9fa14ff3c0e7f4ea95e07204fce95f41aTheodore Ts'o } else if (fix_problem(ctx, 788d37066a9fa14ff3c0e7f4ea95e07204fce95f41aTheodore Ts'o PR_0_JOURNAL_RESET_JOURNAL, &pctx)) { 7893b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o reset = 1; 790d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o sb->s_state &= ~EXT2_VALID_FS; 791d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o ext2fs_mark_super_dirty(ctx->fs); 792d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o } 793d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o /* 794d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o * If the user answers no to the above question, we 795d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o * ignore the fact that journal apparently has data; 796d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o * accidentally replaying over valid data would be far 797d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o * worse than skipping a questionable recovery. 798efc6f628e15de95bcd13e4f0ee223cb42115d520Theodore Ts'o * 799d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o * XXX should we abort with a fatal error here? What 800d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o * will the ext3 kernel code do if a filesystem with 801d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o * !NEEDS_RECOVERY but with a non-zero 802d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o * journal->j_superblock->s_start is mounted? 803d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o */ 8043b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } 8053b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 8066d75685e2b76f4099589ad33732cf59f279b5d65Theodore Ts'o /* 8076d75685e2b76f4099589ad33732cf59f279b5d65Theodore Ts'o * If we don't need to do replay the journal, check to see if 8086d75685e2b76f4099589ad33732cf59f279b5d65Theodore Ts'o * the journal's errno is set; if so, we need to mark the file 8096d75685e2b76f4099589ad33732cf59f279b5d65Theodore Ts'o * system as being corrupt and clear the journal's s_errno. 8106d75685e2b76f4099589ad33732cf59f279b5d65Theodore Ts'o */ 8116d75685e2b76f4099589ad33732cf59f279b5d65Theodore Ts'o if (!(sb->s_feature_incompat & EXT3_FEATURE_INCOMPAT_RECOVER) && 8126d75685e2b76f4099589ad33732cf59f279b5d65Theodore Ts'o journal->j_superblock->s_errno) { 8136d75685e2b76f4099589ad33732cf59f279b5d65Theodore Ts'o ctx->fs->super->s_state |= EXT2_ERROR_FS; 8146d75685e2b76f4099589ad33732cf59f279b5d65Theodore Ts'o ext2fs_mark_super_dirty(ctx->fs); 8156d75685e2b76f4099589ad33732cf59f279b5d65Theodore Ts'o journal->j_superblock->s_errno = 0; 8166d75685e2b76f4099589ad33732cf59f279b5d65Theodore Ts'o mark_buffer_dirty(journal->j_sb_buffer); 8176d75685e2b76f4099589ad33732cf59f279b5d65Theodore Ts'o } 8186d75685e2b76f4099589ad33732cf59f279b5d65Theodore Ts'o 8196a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o e2fsck_journal_release(ctx, journal, reset, 0); 8203b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return retval; 8213b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o} 8223b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 8236a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'ostatic errcode_t recover_ext3_journal(e2fsck_t ctx) 8243b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o{ 825185c4aeaf23d48375e3506218305031663203d0fTheodore Ts'o struct problem_context pctx; 8263b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o journal_t *journal; 8273b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o int retval; 8283b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 829185c4aeaf23d48375e3506218305031663203d0fTheodore Ts'o clear_problem_context(&pctx); 830185c4aeaf23d48375e3506218305031663203d0fTheodore Ts'o 8318cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o journal_init_revoke_caches(); 8323b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o retval = e2fsck_get_journal(ctx, &journal); 8333b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (retval) 834ecf1b7767e1772f4c6dba8f02026057ed05397bdTheodore Ts'o return retval; 835ecf1b7767e1772f4c6dba8f02026057ed05397bdTheodore Ts'o 8363b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o retval = e2fsck_journal_load(journal); 8373b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (retval) 8386a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o goto errout; 8393b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 8400e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o retval = journal_init_revoke(journal, 1024); 8410e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o if (retval) 8426a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o goto errout; 843efc6f628e15de95bcd13e4f0ee223cb42115d520Theodore Ts'o 8443b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o retval = -journal_recover(journal); 845c0a083fac3b8f03ae15f5bf30c230c015538051eTheodore Ts'o if (retval) 846c0a083fac3b8f03ae15f5bf30c230c015538051eTheodore Ts'o goto errout; 847efc6f628e15de95bcd13e4f0ee223cb42115d520Theodore Ts'o 848185c4aeaf23d48375e3506218305031663203d0fTheodore Ts'o if (journal->j_failed_commit) { 849185c4aeaf23d48375e3506218305031663203d0fTheodore Ts'o pctx.ino = journal->j_failed_commit; 850185c4aeaf23d48375e3506218305031663203d0fTheodore Ts'o fix_problem(ctx, PR_0_JNL_TXN_CORRUPT, &pctx); 85163b3913dbc0bc7cdf8a63f3bdb0c8d7d605e9a40Theodore Ts'o journal->j_superblock->s_errno = -EINVAL; 8528cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o mark_buffer_dirty(journal->j_sb_buffer); 853c0a083fac3b8f03ae15f5bf30c230c015538051eTheodore Ts'o } 854efc6f628e15de95bcd13e4f0ee223cb42115d520Theodore Ts'o 8556a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'oerrout: 856d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o journal_destroy_revoke(journal); 8578cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o journal_destroy_revoke_caches(); 8586a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o e2fsck_journal_release(ctx, journal, 1, 0); 8593b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return retval; 8603b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o} 8613b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 86280bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'oint e2fsck_run_ext3_journal(e2fsck_t ctx) 86380bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o{ 86480bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o io_manager io_ptr = ctx->fs->io->manager; 86580bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o int blocksize = ctx->fs->blocksize; 866ecf1b7767e1772f4c6dba8f02026057ed05397bdTheodore Ts'o errcode_t retval, recover_retval; 86727a407df546eafa54f3f50c470e3a0a4c788fae5Theodore Ts'o io_stats stats = 0; 86827a407df546eafa54f3f50c470e3a0a4c788fae5Theodore Ts'o unsigned long long kbytes_written = 0; 8698394902e04e64ed10ca81e869892c00143ee4931Theodore Ts'o 8708394902e04e64ed10ca81e869892c00143ee4931Theodore Ts'o printf(_("%s: recovering journal\n"), ctx->device_name); 871ecf1b7767e1772f4c6dba8f02026057ed05397bdTheodore Ts'o if (ctx->options & E2F_OPT_READONLY) { 8728394902e04e64ed10ca81e869892c00143ee4931Theodore Ts'o printf(_("%s: won't do journal recovery while read-only\n"), 873ecf1b7767e1772f4c6dba8f02026057ed05397bdTheodore Ts'o ctx->device_name); 874ecf1b7767e1772f4c6dba8f02026057ed05397bdTheodore Ts'o return EXT2_ET_FILE_RO; 875ecf1b7767e1772f4c6dba8f02026057ed05397bdTheodore Ts'o } 876ecf1b7767e1772f4c6dba8f02026057ed05397bdTheodore Ts'o 8770f2cfe25796bd53b920b1607410bf94251f17fbcTheodore Ts'o if (ctx->fs->flags & EXT2_FLAG_DIRTY) 8783c6b8977d44c66f0a50dd77c18a78b57b1022f8cTheodore Ts'o ext2fs_flush(ctx->fs); /* Force out any modifications */ 879d051521278790e5fc7d97d59bb3be6b662a76365Theodore Ts'o 880ecf1b7767e1772f4c6dba8f02026057ed05397bdTheodore Ts'o recover_retval = recover_ext3_journal(ctx); 881efc6f628e15de95bcd13e4f0ee223cb42115d520Theodore Ts'o 88280bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o /* 88380bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o * Reload the filesystem context to get up-to-date data from disk 88480bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o * because journal recovery will change the filesystem under us. 88580bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o */ 88627a407df546eafa54f3f50c470e3a0a4c788fae5Theodore Ts'o if (ctx->fs->super->s_kbytes_written && 88727a407df546eafa54f3f50c470e3a0a4c788fae5Theodore Ts'o ctx->fs->io->manager->get_stats) 88827a407df546eafa54f3f50c470e3a0a4c788fae5Theodore Ts'o ctx->fs->io->manager->get_stats(ctx->fs->io, &stats); 88927a407df546eafa54f3f50c470e3a0a4c788fae5Theodore Ts'o if (stats && stats->bytes_written) 89027a407df546eafa54f3f50c470e3a0a4c788fae5Theodore Ts'o kbytes_written = stats->bytes_written >> 10; 8910f5eba7501f467f757792ee449d16c9259b994fdAndreas Dilger 8920f5eba7501f467f757792ee449d16c9259b994fdAndreas Dilger ext2fs_mmp_stop(ctx->fs); 89327a407df546eafa54f3f50c470e3a0a4c788fae5Theodore Ts'o ext2fs_free(ctx->fs); 894ecf1b7767e1772f4c6dba8f02026057ed05397bdTheodore Ts'o retval = ext2fs_open(ctx->filesystem_name, EXT2_FLAG_RW, 89580bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o ctx->superblock, blocksize, io_ptr, 89680bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o &ctx->fs); 89780bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o if (retval) { 89880bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o com_err(ctx->program_name, retval, 89980bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o _("while trying to re-open %s"), 90080bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o ctx->device_name); 90199a2cc969fb47e8c87965aa9fb93cabf6fe4ac1eTheodore Ts'o fatal_error(ctx, 0); 90280bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o } 90380bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o ctx->fs->priv_data = ctx; 9048dceb92407f751d1a8aecd4bfb36d1fe2dc3cf9aTheodore Ts'o ctx->fs->now = ctx->now; 905058ad1c70c9a097d282270c6f76d3c3493e15fe2Theodore Ts'o ctx->fs->flags |= EXT2_FLAG_MASTER_SB_ONLY; 90627a407df546eafa54f3f50c470e3a0a4c788fae5Theodore Ts'o ctx->fs->super->s_kbytes_written += kbytes_written; 90717390c047f5470eec005c5461a7926d03d6bbbe7Theodore Ts'o 908ecf1b7767e1772f4c6dba8f02026057ed05397bdTheodore Ts'o /* Set the superblock flags */ 909ecf1b7767e1772f4c6dba8f02026057ed05397bdTheodore Ts'o e2fsck_clear_recover(ctx, recover_retval); 91063b3913dbc0bc7cdf8a63f3bdb0c8d7d605e9a40Theodore Ts'o 91163b3913dbc0bc7cdf8a63f3bdb0c8d7d605e9a40Theodore Ts'o /* 91263b3913dbc0bc7cdf8a63f3bdb0c8d7d605e9a40Theodore Ts'o * Do one last sanity check, and propagate journal->s_errno to 91363b3913dbc0bc7cdf8a63f3bdb0c8d7d605e9a40Theodore Ts'o * the EXT2_ERROR_FS flag in the fs superblock if needed. 91463b3913dbc0bc7cdf8a63f3bdb0c8d7d605e9a40Theodore Ts'o */ 91563b3913dbc0bc7cdf8a63f3bdb0c8d7d605e9a40Theodore Ts'o retval = e2fsck_check_ext3_journal(ctx); 91663b3913dbc0bc7cdf8a63f3bdb0c8d7d605e9a40Theodore Ts'o return retval ? retval : recover_retval; 91717390c047f5470eec005c5461a7926d03d6bbbe7Theodore Ts'o} 918773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o 919773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o/* 920773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o * This function will move the journal inode from a visible file in 921773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o * the filesystem directory hierarchy to the reserved inode if necessary. 922773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o */ 923546a1ff18cc912003883ff67ba3e87c69f700fc4Theodore Ts'ostatic const char * const journal_names[] = { 924773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o ".journal", "journal", ".journal.dat", "journal.dat", 0 }; 925773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o 926773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'ovoid e2fsck_move_ext3_journal(e2fsck_t ctx) 927773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o{ 928773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o struct ext2_super_block *sb = ctx->fs->super; 929773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o struct problem_context pctx; 930773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o struct ext2_inode inode; 931773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o ext2_filsys fs = ctx->fs; 932773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o ext2_ino_t ino; 933773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o errcode_t retval; 934773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o const char * const * cpp; 935773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o int group, mount_flags; 936efc6f628e15de95bcd13e4f0ee223cb42115d520Theodore Ts'o 937a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o clear_problem_context(&pctx); 938a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o 939773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o /* 940773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o * If the filesystem is opened read-only, or there is no 941a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o * journal, then do nothing. 942773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o */ 943773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o if ((ctx->options & E2F_OPT_READONLY) || 944773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o (sb->s_journal_inum == 0) || 945773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o !(sb->s_feature_compat & EXT3_FEATURE_COMPAT_HAS_JOURNAL)) 946773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o return; 947773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o 948773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o /* 949a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o * Read in the journal inode 950a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o */ 951a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o if (ext2fs_read_inode(fs, sb->s_journal_inum, &inode) != 0) 952a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o return; 953a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o 954a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o /* 955a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o * If it's necessary to backup the journal inode, do so. 956a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o */ 957a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o if ((sb->s_jnl_backup_type == 0) || 958a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o ((sb->s_jnl_backup_type == EXT3_JNL_BACKUP_BLOCKS) && 959a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o memcmp(inode.i_block, sb->s_jnl_blocks, EXT2_N_BLOCKS*4))) { 960a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o if (fix_problem(ctx, PR_0_BACKUP_JNL, &pctx)) { 961a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o memcpy(sb->s_jnl_blocks, inode.i_block, 962a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o EXT2_N_BLOCKS*4); 963931b58e1cb2158c1f5218059cce92e94917ef485Andreas Dilger sb->s_jnl_blocks[15] = inode.i_size_high; 964a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o sb->s_jnl_blocks[16] = inode.i_size; 965a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o sb->s_jnl_backup_type = EXT3_JNL_BACKUP_BLOCKS; 966a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o ext2fs_mark_super_dirty(fs); 96727479eb2270c344a0042b4c492337b67a547c393Theodore Ts'o fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY; 968a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o } 969a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o } 970a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o 971a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o /* 972a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o * If the journal is already the hidden inode, then do nothing 973a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o */ 974a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o if (sb->s_journal_inum == EXT2_JOURNAL_INO) 975a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o return; 976efc6f628e15de95bcd13e4f0ee223cb42115d520Theodore Ts'o 977a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o /* 978a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o * The journal inode had better have only one link and not be readable. 979a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o */ 980a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o if (inode.i_links_count != 1) 981a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o return; 982a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o 983a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o /* 984773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o * If the filesystem is mounted, or we can't tell whether 985773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o * or not it's mounted, do nothing. 986773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o */ 987773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o retval = ext2fs_check_if_mounted(ctx->filesystem_name, &mount_flags); 988773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o if (retval || (mount_flags & EXT2_MF_MOUNTED)) 989773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o return; 990773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o 991773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o /* 992773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o * If we can't find the name of the journal inode, then do 993773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o * nothing. 994773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o */ 995773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o for (cpp = journal_names; *cpp; cpp++) { 996773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o retval = ext2fs_lookup(fs, EXT2_ROOT_INO, *cpp, 997773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o strlen(*cpp), 0, &ino); 998773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o if ((retval == 0) && (ino == sb->s_journal_inum)) 999773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o break; 1000773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o } 1001773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o if (*cpp == 0) 1002773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o return; 1003773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o 1004773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o /* We need the inode bitmap to be loaded */ 1005773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o retval = ext2fs_read_bitmaps(fs); 1006773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o if (retval) 1007773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o return; 1008773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o 1009773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o pctx.str = *cpp; 1010773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o if (!fix_problem(ctx, PR_0_MOVE_JOURNAL, &pctx)) 1011773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o return; 1012efc6f628e15de95bcd13e4f0ee223cb42115d520Theodore Ts'o 1013773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o /* 1014773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o * OK, we've done all the checks, let's actually move the 1015773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o * journal inode. Errors at this point mean we need to force 1016773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o * an ext2 filesystem check. 1017773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o */ 1018773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o if ((retval = ext2fs_unlink(fs, EXT2_ROOT_INO, *cpp, ino, 0)) != 0) 1019773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o goto err_out; 1020773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o if ((retval = ext2fs_write_inode(fs, EXT2_JOURNAL_INO, &inode)) != 0) 1021773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o goto err_out; 1022773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o sb->s_journal_inum = EXT2_JOURNAL_INO; 1023773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o ext2fs_mark_super_dirty(fs); 102427479eb2270c344a0042b4c492337b67a547c393Theodore Ts'o fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY; 1025773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o inode.i_links_count = 0; 10261f3ad14a5ad5df3ac4012d41ef5d76411cd8fff3Theodore Ts'o inode.i_dtime = ctx->now; 1027773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o if ((retval = ext2fs_write_inode(fs, ino, &inode)) != 0) 1028773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o goto err_out; 1029773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o 1030773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o group = ext2fs_group_of_ino(fs, ino); 1031c5d2f50dee996e48e96066155f85d7c925fcba0dValerie Aurora Henson ext2fs_unmark_inode_bitmap2(fs->inode_map, ino); 1032773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o ext2fs_mark_ib_dirty(fs); 1033d7cca6b06f366f998ed43346f9b6fca9e163692fValerie Aurora Henson ext2fs_bg_free_inodes_count_set(fs, group, ext2fs_bg_free_inodes_count(fs, group) + 1); 103449a7360ba6b986242d9f0f33e102291d2e0dfb47Jose R. Santos ext2fs_group_desc_csum_set(fs, group); 1035773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o fs->super->s_free_inodes_count++; 1036773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o return; 1037773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o 1038773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'oerr_out: 1039773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o pctx.errcode = retval; 1040773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o fix_problem(ctx, PR_0_ERR_MOVE_JOURNAL, &pctx); 1041773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o fs->super->s_state &= ~EXT2_VALID_FS; 1042773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o ext2fs_mark_super_dirty(fs); 1043773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o return; 1044773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o} 1045773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o 1046b1c52b26a44efeb366402985763c242a4b21aeb1Theodore Ts'o/* 1047b1c52b26a44efeb366402985763c242a4b21aeb1Theodore Ts'o * This function makes sure the superblock hint for the external 1048b1c52b26a44efeb366402985763c242a4b21aeb1Theodore Ts'o * journal is correct. 1049b1c52b26a44efeb366402985763c242a4b21aeb1Theodore Ts'o */ 1050b1c52b26a44efeb366402985763c242a4b21aeb1Theodore Ts'oint e2fsck_fix_ext3_journal_hint(e2fsck_t ctx) 1051b1c52b26a44efeb366402985763c242a4b21aeb1Theodore Ts'o{ 1052b1c52b26a44efeb366402985763c242a4b21aeb1Theodore Ts'o struct ext2_super_block *sb = ctx->fs->super; 1053b1c52b26a44efeb366402985763c242a4b21aeb1Theodore Ts'o struct problem_context pctx; 1054b1c52b26a44efeb366402985763c242a4b21aeb1Theodore Ts'o char uuid[37], *journal_name; 1055b1c52b26a44efeb366402985763c242a4b21aeb1Theodore Ts'o struct stat st; 1056b1c52b26a44efeb366402985763c242a4b21aeb1Theodore Ts'o 1057b1c52b26a44efeb366402985763c242a4b21aeb1Theodore Ts'o if (!(sb->s_feature_compat & EXT3_FEATURE_COMPAT_HAS_JOURNAL) || 1058b1c52b26a44efeb366402985763c242a4b21aeb1Theodore Ts'o uuid_is_null(sb->s_journal_uuid)) 1059b1c52b26a44efeb366402985763c242a4b21aeb1Theodore Ts'o return 0; 1060b1c52b26a44efeb366402985763c242a4b21aeb1Theodore Ts'o 1061b1c52b26a44efeb366402985763c242a4b21aeb1Theodore Ts'o uuid_unparse(sb->s_journal_uuid, uuid); 1062b1c52b26a44efeb366402985763c242a4b21aeb1Theodore Ts'o journal_name = blkid_get_devname(ctx->blkid, "UUID", uuid); 1063b1c52b26a44efeb366402985763c242a4b21aeb1Theodore Ts'o if (!journal_name) 1064b1c52b26a44efeb366402985763c242a4b21aeb1Theodore Ts'o return 0; 1065b1c52b26a44efeb366402985763c242a4b21aeb1Theodore Ts'o 1066b1c52b26a44efeb366402985763c242a4b21aeb1Theodore Ts'o if (stat(journal_name, &st) < 0) 1067b1c52b26a44efeb366402985763c242a4b21aeb1Theodore Ts'o return 0; 1068b1c52b26a44efeb366402985763c242a4b21aeb1Theodore Ts'o 1069b1c52b26a44efeb366402985763c242a4b21aeb1Theodore Ts'o if (st.st_rdev != sb->s_journal_dev) { 1070b1c52b26a44efeb366402985763c242a4b21aeb1Theodore Ts'o clear_problem_context(&pctx); 1071b1c52b26a44efeb366402985763c242a4b21aeb1Theodore Ts'o pctx.num = st.st_rdev; 1072b1c52b26a44efeb366402985763c242a4b21aeb1Theodore Ts'o if (fix_problem(ctx, PR_0_EXTERNAL_JOURNAL_HINT, &pctx)) { 1073b1c52b26a44efeb366402985763c242a4b21aeb1Theodore Ts'o sb->s_journal_dev = st.st_rdev; 1074b1c52b26a44efeb366402985763c242a4b21aeb1Theodore Ts'o ext2fs_mark_super_dirty(ctx->fs); 1075b1c52b26a44efeb366402985763c242a4b21aeb1Theodore Ts'o } 1076b1c52b26a44efeb366402985763c242a4b21aeb1Theodore Ts'o } 1077b1c52b26a44efeb366402985763c242a4b21aeb1Theodore Ts'o 1078b1c52b26a44efeb366402985763c242a4b21aeb1Theodore Ts'o free(journal_name); 1079b1c52b26a44efeb366402985763c242a4b21aeb1Theodore Ts'o return 0; 1080b1c52b26a44efeb366402985763c242a4b21aeb1Theodore Ts'o} 1081