journal.c revision ded28ac2ab67300f39783184a8f8930b548fc5f0
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 618cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore 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; 713b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 728cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o bh = e2fsck_allocate_memory(kdev->k_ctx, sizeof(*bh), "block buffer"); 733b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (!bh) 743b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return NULL; 753b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 763b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o jfs_debug(4, "getblk for block %lu (%d bytes)(total %d)\n", 7753ef44c40a3e425d2c700d8fd77a6b655aa121feTheodore Ts'o (unsigned long) blocknr, blocksize, ++bh_count); 783b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 798cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o bh->b_ctx = kdev->k_ctx; 808cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o if (kdev->k_dev == K_DEV_FS) 818cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o bh->b_io = kdev->k_ctx->fs->io; 828cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o else 838cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o bh->b_io = kdev->k_ctx->journal_io; 843b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o bh->b_size = blocksize; 853b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o bh->b_blocknr = blocknr; 863b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 873b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return bh; 883b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o} 893b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 9093effaa456e490c6dfff08287c8f5c652cac8469Theodore Ts'ovoid sync_blockdev(kdev_t kdev) 9193effaa456e490c6dfff08287c8f5c652cac8469Theodore Ts'o{ 9293effaa456e490c6dfff08287c8f5c652cac8469Theodore Ts'o io_channel io; 9393effaa456e490c6dfff08287c8f5c652cac8469Theodore Ts'o 9493effaa456e490c6dfff08287c8f5c652cac8469Theodore Ts'o if (kdev->k_dev == K_DEV_FS) 9593effaa456e490c6dfff08287c8f5c652cac8469Theodore Ts'o io = kdev->k_ctx->fs->io; 9693effaa456e490c6dfff08287c8f5c652cac8469Theodore Ts'o else 9793effaa456e490c6dfff08287c8f5c652cac8469Theodore Ts'o io = kdev->k_ctx->journal_io; 9893effaa456e490c6dfff08287c8f5c652cac8469Theodore Ts'o 9993effaa456e490c6dfff08287c8f5c652cac8469Theodore Ts'o io_channel_flush(io); 10093effaa456e490c6dfff08287c8f5c652cac8469Theodore Ts'o} 10193effaa456e490c6dfff08287c8f5c652cac8469Theodore Ts'o 1020e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'ovoid ll_rw_block(int rw, int nr, struct buffer_head *bhp[]) 1033b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o{ 1043b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o int retval; 1050e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o struct buffer_head *bh; 1063b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 1070e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o for (; nr > 0; --nr) { 1080e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o bh = *bhp++; 1090e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o if (rw == READ && !bh->b_uptodate) { 1100e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o jfs_debug(3, "reading block %lu/%p\n", 11153ef44c40a3e425d2c700d8fd77a6b655aa121feTheodore Ts'o (unsigned long) bh->b_blocknr, (void *) bh); 1128cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o retval = io_channel_read_blk(bh->b_io, 1130e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o bh->b_blocknr, 1140e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o 1, bh->b_data); 1150e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o if (retval) { 1160e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o com_err(bh->b_ctx->device_name, retval, 117544349270e4c74a6feb971123884a8cf5052a7eeTheodore Ts'o "while reading block %lu\n", 118544349270e4c74a6feb971123884a8cf5052a7eeTheodore Ts'o (unsigned long) bh->b_blocknr); 1190e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o bh->b_err = retval; 1200e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o continue; 1210e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o } 1220e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o bh->b_uptodate = 1; 1230e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o } else if (rw == WRITE && bh->b_dirty) { 1240e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o jfs_debug(3, "writing block %lu/%p\n", 12553ef44c40a3e425d2c700d8fd77a6b655aa121feTheodore Ts'o (unsigned long) bh->b_blocknr, (void *) bh); 1268cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o retval = io_channel_write_blk(bh->b_io, 1270e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o bh->b_blocknr, 1280e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o 1, bh->b_data); 1290e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o if (retval) { 1300e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o com_err(bh->b_ctx->device_name, retval, 131544349270e4c74a6feb971123884a8cf5052a7eeTheodore Ts'o "while writing block %lu\n", 132544349270e4c74a6feb971123884a8cf5052a7eeTheodore Ts'o (unsigned long) bh->b_blocknr); 1330e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o bh->b_err = retval; 1340e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o continue; 1350e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o } 1360e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o bh->b_dirty = 0; 1370e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o bh->b_uptodate = 1; 138b969b1b8a5c13992cadb026114731958644540d8Matthias Andree } else { 1390e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o jfs_debug(3, "no-op %s for block %lu\n", 1400e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o rw == READ ? "read" : "write", 14153ef44c40a3e425d2c700d8fd77a6b655aa121feTheodore Ts'o (unsigned long) bh->b_blocknr); 142b969b1b8a5c13992cadb026114731958644540d8Matthias Andree } 1430e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o } 1443b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o} 1453b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 1468cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'ovoid mark_buffer_dirty(struct buffer_head *bh) 1473b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o{ 1488cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o bh->b_dirty = 1; 1493b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o} 1503b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 1516a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'ostatic void mark_buffer_clean(struct buffer_head * bh) 1526a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o{ 1536a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o bh->b_dirty = 0; 1546a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o} 1556a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o 1563b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'ovoid brelse(struct buffer_head *bh) 1573b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o{ 1583b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (bh->b_dirty) 1590e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o ll_rw_block(WRITE, 1, &bh); 1603b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o jfs_debug(3, "freeing block %lu/%p (total %d)\n", 16153ef44c40a3e425d2c700d8fd77a6b655aa121feTheodore Ts'o (unsigned long) bh->b_blocknr, (void *) bh, --bh_count); 162c4e3d3f374b409500e3dd05c0b0eca6ac98a6b4eTheodore Ts'o ext2fs_free_mem(&bh); 1633b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o} 1643b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 1653b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'oint buffer_uptodate(struct buffer_head *bh) 1663b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o{ 1673b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return bh->b_uptodate; 1683b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o} 1693b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 17015986f7931e1fe65621b4defb5522c9bf8da76efTheodore Ts'ovoid mark_buffer_uptodate(struct buffer_head *bh, int val) 17115986f7931e1fe65621b4defb5522c9bf8da76efTheodore Ts'o{ 17215986f7931e1fe65621b4defb5522c9bf8da76efTheodore Ts'o bh->b_uptodate = val; 17315986f7931e1fe65621b4defb5522c9bf8da76efTheodore Ts'o} 17415986f7931e1fe65621b4defb5522c9bf8da76efTheodore Ts'o 1753b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'ovoid wait_on_buffer(struct buffer_head *bh) 1763b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o{ 1773b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (!bh->b_uptodate) 1780e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o ll_rw_block(READ, 1, &bh); 1793b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o} 1803b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 18180bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o 1823b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'ostatic void e2fsck_clear_recover(e2fsck_t ctx, int error) 1833b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o{ 1845dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o ctx->fs->super->s_feature_incompat &= ~EXT3_FEATURE_INCOMPAT_RECOVER; 1853b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 1863b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o /* if we had an error doing journal recovery, we need a full fsck */ 1873b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (error) 1885dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o ctx->fs->super->s_state &= ~EXT2_VALID_FS; 1893b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o ext2fs_mark_super_dirty(ctx->fs); 1903b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o} 1913b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 192d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'ostatic errcode_t e2fsck_get_journal(e2fsck_t ctx, journal_t **ret_journal) 1933b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o{ 194d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o struct ext2_super_block *sb = ctx->fs->super; 195d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o struct ext2_super_block jsuper; 196d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o struct problem_context pctx; 197d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o struct buffer_head *bh; 198d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o struct inode *j_inode = NULL; 199d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o struct kdev_s *dev_fs = NULL, *dev_journal; 2003e69906495d5898849a6154b0311b5d4a84a27aeTheodore Ts'o const char *journal_name = 0; 201d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o journal_t *journal = NULL; 2023e69906495d5898849a6154b0311b5d4a84a27aeTheodore Ts'o errcode_t retval = 0; 2033e69906495d5898849a6154b0311b5d4a84a27aeTheodore Ts'o io_manager io_ptr = 0; 204d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o unsigned long start = 0; 205a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o blk_t blk; 206d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o int ext_journal = 0; 207a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o int tried_backup_jnl = 0; 208a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o int i; 2092bfe0bdba37bfd0e4378e855377ebaa823846ea3Brian Behlendorf 210d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o clear_problem_context(&pctx); 2112bfe0bdba37bfd0e4378e855377ebaa823846ea3Brian Behlendorf 212d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o journal = e2fsck_allocate_memory(ctx, sizeof(journal_t), "journal"); 213d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o if (!journal) { 2143b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return EXT2_ET_NO_MEMORY; 2153b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } 2163b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 2178cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o dev_fs = e2fsck_allocate_memory(ctx, 2*sizeof(struct kdev_s), "kdev"); 2188cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o if (!dev_fs) { 2198cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o retval = EXT2_ET_NO_MEMORY; 2208cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o goto errout; 2218cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o } 2228cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o dev_journal = dev_fs+1; 2232bfe0bdba37bfd0e4378e855377ebaa823846ea3Brian Behlendorf 2248cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o dev_fs->k_ctx = dev_journal->k_ctx = ctx; 2258cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o dev_fs->k_dev = K_DEV_FS; 2268cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o dev_journal->k_dev = K_DEV_JOURNAL; 2272bfe0bdba37bfd0e4378e855377ebaa823846ea3Brian Behlendorf 228d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o journal->j_dev = dev_journal; 229d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o journal->j_fs_dev = dev_fs; 230d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o journal->j_inode = NULL; 231d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o journal->j_blocksize = ctx->fs->blocksize; 2323b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 233d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o if (uuid_is_null(sb->s_journal_uuid)) { 2342bfe0bdba37bfd0e4378e855377ebaa823846ea3Brian Behlendorf if (!sb->s_journal_inum) { 2352bfe0bdba37bfd0e4378e855377ebaa823846ea3Brian Behlendorf retval = EXT2_ET_BAD_INODE_NUM; 2362bfe0bdba37bfd0e4378e855377ebaa823846ea3Brian Behlendorf goto errout; 2372bfe0bdba37bfd0e4378e855377ebaa823846ea3Brian Behlendorf } 238d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o j_inode = e2fsck_allocate_memory(ctx, sizeof(*j_inode), 239d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o "journal inode"); 240d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o if (!j_inode) { 241d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o retval = EXT2_ET_NO_MEMORY; 242d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o goto errout; 243d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o } 2443b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 245d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o j_inode->i_ctx = ctx; 246d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o j_inode->i_ino = sb->s_journal_inum; 2472bfe0bdba37bfd0e4378e855377ebaa823846ea3Brian Behlendorf 248d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o if ((retval = ext2fs_read_inode(ctx->fs, 249d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o sb->s_journal_inum, 250a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o &j_inode->i_ext2))) { 251a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o try_backup_journal: 252a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o if (sb->s_jnl_backup_type != EXT3_JNL_BACKUP_BLOCKS || 253a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o tried_backup_jnl) 254a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o goto errout; 255a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o memset(&j_inode->i_ext2, 0, sizeof(struct ext2_inode)); 256a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o memcpy(&j_inode->i_ext2.i_block[0], sb->s_jnl_blocks, 257a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o EXT2_N_BLOCKS*4); 258a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o j_inode->i_ext2.i_size = sb->s_jnl_blocks[16]; 259a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o j_inode->i_ext2.i_links_count = 1; 260a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o j_inode->i_ext2.i_mode = LINUX_S_IFREG | 0600; 261a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o tried_backup_jnl++; 262a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o } 263d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o if (!j_inode->i_ext2.i_links_count || 264d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o !LINUX_S_ISREG(j_inode->i_ext2.i_mode)) { 265d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o retval = EXT2_ET_NO_JOURNAL; 266a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o goto try_backup_journal; 267d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o } 268d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o if (j_inode->i_ext2.i_size / journal->j_blocksize < 269d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o JFS_MIN_JOURNAL_BLOCKS) { 270d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o retval = EXT2_ET_JOURNAL_TOO_SMALL; 271a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o goto try_backup_journal; 272a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o } 273a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o for (i=0; i < EXT2_N_BLOCKS; i++) { 274a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o blk = j_inode->i_ext2.i_block[i]; 275a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o if (!blk) { 276a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o if (i < EXT2_NDIR_BLOCKS) { 277a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o retval = EXT2_ET_JOURNAL_TOO_SMALL; 278a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o goto try_backup_journal; 279a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o } 280a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o continue; 281a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o } 282a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o if (blk < sb->s_first_data_block || 283a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o blk >= sb->s_blocks_count) { 284a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o retval = EXT2_ET_BAD_BLOCK_NUM; 285a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o goto try_backup_journal; 286a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o } 287d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o } 288ded28ac2ab67300f39783184a8f8930b548fc5f0Kalpak Shah if (tried_backup_jnl && !(ctx->options & E2F_OPT_READONLY)) { 289ded28ac2ab67300f39783184a8f8930b548fc5f0Kalpak Shah retval = ext2fs_write_inode(ctx->fs, sb->s_journal_inum, 290ded28ac2ab67300f39783184a8f8930b548fc5f0Kalpak Shah &j_inode->i_ext2); 291ded28ac2ab67300f39783184a8f8930b548fc5f0Kalpak Shah if (retval) 292ded28ac2ab67300f39783184a8f8930b548fc5f0Kalpak Shah goto errout; 293ded28ac2ab67300f39783184a8f8930b548fc5f0Kalpak Shah } 294ded28ac2ab67300f39783184a8f8930b548fc5f0Kalpak Shah 295d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o journal->j_maxlen = j_inode->i_ext2.i_size / journal->j_blocksize; 2963b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 297d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o#ifdef USE_INODE_IO 298a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o retval = ext2fs_inode_io_intern2(ctx->fs, sb->s_journal_inum, 299a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o &j_inode->i_ext2, 300a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o &journal_name); 301d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o if (retval) 302d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o goto errout; 3033b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 304d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o io_ptr = inode_io_manager; 305d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o#else 306d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o journal->j_inode = j_inode; 307d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o ctx->journal_io = ctx->fs->io; 308d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o if ((retval = journal_bmap(journal, 0, &start)) != 0) 309d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o goto errout; 310d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o#endif 311d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o } else { 312d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o ext_journal = 1; 313f364093b1956def0b0f1d037852cbb645284d5f2Theodore Ts'o if (!ctx->journal_name) { 314f364093b1956def0b0f1d037852cbb645284d5f2Theodore Ts'o char uuid[37]; 315f364093b1956def0b0f1d037852cbb645284d5f2Theodore Ts'o 316f364093b1956def0b0f1d037852cbb645284d5f2Theodore Ts'o uuid_unparse(sb->s_journal_uuid, uuid); 317f364093b1956def0b0f1d037852cbb645284d5f2Theodore Ts'o ctx->journal_name = blkid_get_devname(ctx->blkid, 318f364093b1956def0b0f1d037852cbb645284d5f2Theodore Ts'o "UUID", uuid); 319f364093b1956def0b0f1d037852cbb645284d5f2Theodore Ts'o if (!ctx->journal_name) 320f364093b1956def0b0f1d037852cbb645284d5f2Theodore Ts'o ctx->journal_name = blkid_devno_to_devname(sb->s_journal_dev); 321d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o } 322f364093b1956def0b0f1d037852cbb645284d5f2Theodore Ts'o journal_name = ctx->journal_name; 3232bfe0bdba37bfd0e4378e855377ebaa823846ea3Brian Behlendorf 324d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o if (!journal_name) { 325d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o fix_problem(ctx, PR_0_CANT_FIND_JOURNAL, &pctx); 3262bfe0bdba37bfd0e4378e855377ebaa823846ea3Brian Behlendorf retval = EXT2_ET_LOAD_EXT_JOURNAL; 3272bfe0bdba37bfd0e4378e855377ebaa823846ea3Brian Behlendorf goto errout; 328d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o } 3292bfe0bdba37bfd0e4378e855377ebaa823846ea3Brian Behlendorf 330d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o jfs_debug(1, "Using journal file %s\n", journal_name); 331d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o io_ptr = unix_io_manager; 3323b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } 3333b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 334d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o#if 0 335d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o test_io_backing_manager = io_ptr; 336adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o io_ptr = test_io_manager; 337adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o#endif 338d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o#ifndef USE_INODE_IO 339d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o if (ext_journal) 340d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o#endif 341d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o retval = io_ptr->open(journal_name, IO_FLAG_RW, 342d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o &ctx->journal_io); 3436d222f3217b11c9b27f92b4aafe47bfeb59b81faTheodore Ts'o if (retval) 344d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o goto errout; 345adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o 346d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o io_channel_set_blksize(ctx->journal_io, ctx->fs->blocksize); 347d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o 348d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o if (ext_journal) { 349d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o if (ctx->fs->blocksize == 1024) 350d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o start = 1; 351d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o bh = getblk(dev_journal, start, ctx->fs->blocksize); 352d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o if (!bh) { 353d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o retval = EXT2_ET_NO_MEMORY; 354d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o goto errout; 355d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o } 356d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o ll_rw_block(READ, 1, &bh); 3572aa362f54a9a486ffd495028b95532897551d619Theodore Ts'o if ((retval = bh->b_err) != 0) { 3582aa362f54a9a486ffd495028b95532897551d619Theodore Ts'o brelse(bh); 359d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o goto errout; 3602aa362f54a9a486ffd495028b95532897551d619Theodore Ts'o } 361d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o memcpy(&jsuper, start ? bh->b_data : bh->b_data + 1024, 362d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o sizeof(jsuper)); 363d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o brelse(bh); 364adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o#ifdef EXT2FS_ENABLE_SWAPFS 365d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o if (jsuper.s_magic == ext2fs_swab16(EXT2_SUPER_MAGIC)) 366d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o ext2fs_swap_super(&jsuper); 367adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o#endif 368d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o if (jsuper.s_magic != EXT2_SUPER_MAGIC || 369d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o !(jsuper.s_feature_incompat & EXT3_FEATURE_INCOMPAT_JOURNAL_DEV)) { 370d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o fix_problem(ctx, PR_0_EXT_JOURNAL_BAD_SUPER, &pctx); 371d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o retval = EXT2_ET_LOAD_EXT_JOURNAL; 372d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o goto errout; 373d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o } 374d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o /* Make sure the journal UUID is correct */ 375d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o if (memcmp(jsuper.s_uuid, ctx->fs->super->s_journal_uuid, 376d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o sizeof(jsuper.s_uuid))) { 377d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o fix_problem(ctx, PR_0_JOURNAL_BAD_UUID, &pctx); 378d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o retval = EXT2_ET_LOAD_EXT_JOURNAL; 379d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o goto errout; 380d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o } 3812bfe0bdba37bfd0e4378e855377ebaa823846ea3Brian Behlendorf 382d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o journal->j_maxlen = jsuper.s_blocks_count; 383d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o start++; 3843b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } 3853b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 386d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o if (!(bh = getblk(dev_journal, start, journal->j_blocksize))) { 387adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o retval = EXT2_ET_NO_MEMORY; 388adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o goto errout; 389adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o } 3902bfe0bdba37bfd0e4378e855377ebaa823846ea3Brian Behlendorf 391d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o journal->j_sb_buffer = bh; 392d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o journal->j_superblock = (journal_superblock_t *)bh->b_data; 3932bfe0bdba37bfd0e4378e855377ebaa823846ea3Brian Behlendorf 394d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o#ifdef USE_INODE_IO 395d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o if (j_inode) 396c4e3d3f374b409500e3dd05c0b0eca6ac98a6b4eTheodore Ts'o ext2fs_free_mem(&j_inode); 397d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o#endif 398d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o 399d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o *ret_journal = journal; 400adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o return 0; 401adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o 402adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'oerrout: 403d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o if (dev_fs) 404c4e3d3f374b409500e3dd05c0b0eca6ac98a6b4eTheodore Ts'o ext2fs_free_mem(&dev_fs); 405d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o if (j_inode) 406c4e3d3f374b409500e3dd05c0b0eca6ac98a6b4eTheodore Ts'o ext2fs_free_mem(&j_inode); 407d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o if (journal) 408c4e3d3f374b409500e3dd05c0b0eca6ac98a6b4eTheodore Ts'o ext2fs_free_mem(&journal); 409adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o return retval; 4103b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o} 4113b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 4126a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'ostatic errcode_t e2fsck_journal_fix_bad_inode(e2fsck_t ctx, 4136a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o struct problem_context *pctx) 4143b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o{ 4155dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o struct ext2_super_block *sb = ctx->fs->super; 4165dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o int recover = ctx->fs->super->s_feature_incompat & 4175dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o EXT3_FEATURE_INCOMPAT_RECOVER; 4185dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o int has_journal = ctx->fs->super->s_feature_compat & 4195dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o EXT3_FEATURE_COMPAT_HAS_JOURNAL; 4203b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 4215dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o if (has_journal || sb->s_journal_inum) { 4223b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o /* The journal inode is bogus, remove and force full fsck */ 4237e92dfae9e60947a20a2078b7871b073441dac44Theodore Ts'o pctx->ino = sb->s_journal_inum; 4243b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (fix_problem(ctx, PR_0_JOURNAL_BAD_INODE, pctx)) { 4255dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o if (has_journal && sb->s_journal_inum) 4263b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o printf("*** ext3 journal has been deleted - " 4273b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o "filesystem is now ext2 only ***\n\n"); 4285dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o sb->s_feature_compat &= ~EXT3_FEATURE_COMPAT_HAS_JOURNAL; 4295dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o sb->s_journal_inum = 0; 4305107d0d196b9c51cf18380b6996b1074afe51df2Kalpak Shah ctx->flags |= E2F_FLAG_JOURNAL_INODE; 4313b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o e2fsck_clear_recover(ctx, 1); 4323b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return 0; 4333b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } 4343b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return EXT2_ET_BAD_INODE_NUM; 4353b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } else if (recover) { 4363b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (fix_problem(ctx, PR_0_JOURNAL_RECOVER_SET, pctx)) { 4373b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o e2fsck_clear_recover(ctx, 1); 4383b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return 0; 4393b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } 4403b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return EXT2_ET_UNSUPP_FEATURE; 4413b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } 4423b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return 0; 4433b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o} 4443b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 44562e3e7fe4f32c2186e848f37b7f977835975413eTheodore Ts'o#define V1_SB_SIZE 0x0024 44662e3e7fe4f32c2186e848f37b7f977835975413eTheodore Ts'ostatic void clear_v2_journal_fields(journal_t *journal) 44762e3e7fe4f32c2186e848f37b7f977835975413eTheodore Ts'o{ 4488cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o e2fsck_t ctx = journal->j_dev->k_ctx; 44962e3e7fe4f32c2186e848f37b7f977835975413eTheodore Ts'o struct problem_context pctx; 45062e3e7fe4f32c2186e848f37b7f977835975413eTheodore Ts'o 45162e3e7fe4f32c2186e848f37b7f977835975413eTheodore Ts'o clear_problem_context(&pctx); 45262e3e7fe4f32c2186e848f37b7f977835975413eTheodore Ts'o 45362e3e7fe4f32c2186e848f37b7f977835975413eTheodore Ts'o if (!fix_problem(ctx, PR_0_CLEAR_V2_JOURNAL, &pctx)) 45462e3e7fe4f32c2186e848f37b7f977835975413eTheodore Ts'o return; 45562e3e7fe4f32c2186e848f37b7f977835975413eTheodore Ts'o 45662e3e7fe4f32c2186e848f37b7f977835975413eTheodore Ts'o memset(((char *) journal->j_superblock) + V1_SB_SIZE, 0, 45762e3e7fe4f32c2186e848f37b7f977835975413eTheodore Ts'o ctx->fs->blocksize-V1_SB_SIZE); 4588cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o mark_buffer_dirty(journal->j_sb_buffer); 45962e3e7fe4f32c2186e848f37b7f977835975413eTheodore Ts'o} 46062e3e7fe4f32c2186e848f37b7f977835975413eTheodore Ts'o 46162e3e7fe4f32c2186e848f37b7f977835975413eTheodore Ts'o 4626a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'ostatic errcode_t e2fsck_journal_load(journal_t *journal) 4633b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o{ 4648cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o e2fsck_t ctx = journal->j_dev->k_ctx; 4653b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o journal_superblock_t *jsb; 4663b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o struct buffer_head *jbh = journal->j_sb_buffer; 4673b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o struct problem_context pctx; 4683b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 4693b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o clear_problem_context(&pctx); 4703b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 4710e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o ll_rw_block(READ, 1, &jbh); 4723b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (jbh->b_err) { 4733b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o com_err(ctx->device_name, jbh->b_err, 4743b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o _("reading journal superblock\n")); 4753b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return jbh->b_err; 4763b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } 4773b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 4783b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o jsb = journal->j_superblock; 4793b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o /* If we don't even have JFS_MAGIC, we probably have a wrong inode */ 4803b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (jsb->s_header.h_magic != htonl(JFS_MAGIC_NUMBER)) 4813b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return e2fsck_journal_fix_bad_inode(ctx, &pctx); 4823b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 4830e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o switch (ntohl(jsb->s_header.h_blocktype)) { 4840e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o case JFS_SUPERBLOCK_V1: 4850e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o journal->j_format_version = 1; 48662e3e7fe4f32c2186e848f37b7f977835975413eTheodore Ts'o if (jsb->s_feature_compat || 48762e3e7fe4f32c2186e848f37b7f977835975413eTheodore Ts'o jsb->s_feature_incompat || 48862e3e7fe4f32c2186e848f37b7f977835975413eTheodore Ts'o jsb->s_feature_ro_compat || 48962e3e7fe4f32c2186e848f37b7f977835975413eTheodore Ts'o jsb->s_nr_users) 49062e3e7fe4f32c2186e848f37b7f977835975413eTheodore Ts'o clear_v2_journal_fields(journal); 4910e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o break; 4920e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o 4930e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o case JFS_SUPERBLOCK_V2: 4940e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o journal->j_format_version = 2; 495b3b3d465b1e833af355a41c1c470d8fa3592bc26Gabriel Paubert if (ntohl(jsb->s_nr_users) > 1 && 496a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o uuid_is_null(ctx->fs->super->s_journal_uuid)) 49762e3e7fe4f32c2186e848f37b7f977835975413eTheodore Ts'o clear_v2_journal_fields(journal); 498adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o if (ntohl(jsb->s_nr_users) > 1) { 499adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o fix_problem(ctx, PR_0_JOURNAL_UNSUPP_MULTIFS, &pctx); 500adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o return EXT2_ET_JOURNAL_UNSUPP_VERSION; 501adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o } 5020e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o break; 503c7f23364fd6d8d25d74e51ba5f342fc2230048d8Theodore Ts'o 504c7f23364fd6d8d25d74e51ba5f342fc2230048d8Theodore Ts'o /* 505c7f23364fd6d8d25d74e51ba5f342fc2230048d8Theodore Ts'o * These should never appear in a journal super block, so if 506c7f23364fd6d8d25d74e51ba5f342fc2230048d8Theodore Ts'o * they do, the journal is badly corrupted. 507c7f23364fd6d8d25d74e51ba5f342fc2230048d8Theodore Ts'o */ 508c7f23364fd6d8d25d74e51ba5f342fc2230048d8Theodore Ts'o case JFS_DESCRIPTOR_BLOCK: 509c7f23364fd6d8d25d74e51ba5f342fc2230048d8Theodore Ts'o case JFS_COMMIT_BLOCK: 510c7f23364fd6d8d25d74e51ba5f342fc2230048d8Theodore Ts'o case JFS_REVOKE_BLOCK: 511c7f23364fd6d8d25d74e51ba5f342fc2230048d8Theodore Ts'o return EXT2_ET_CORRUPT_SUPERBLOCK; 5120e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o 5130e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o /* If we don't understand the superblock major type, but there 5140e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o * is a magic number, then it is likely to be a new format we 5150e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o * just don't understand, so leave it alone. */ 5160e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o default: 517c7f23364fd6d8d25d74e51ba5f342fc2230048d8Theodore Ts'o return EXT2_ET_JOURNAL_UNSUPP_VERSION; 5180e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o } 5190e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o 5202f686ace1c8e2f680ffd450d143cdd01a649687aTheodore Ts'o if (JFS_HAS_INCOMPAT_FEATURE(journal, ~JFS_KNOWN_INCOMPAT_FEATURES)) 5212f686ace1c8e2f680ffd450d143cdd01a649687aTheodore Ts'o return EXT2_ET_UNSUPP_FEATURE; 522424cd2beb7c40a3e4cf96b5bf28b24e48554a754Theodore Ts'o 5232f686ace1c8e2f680ffd450d143cdd01a649687aTheodore Ts'o if (JFS_HAS_RO_COMPAT_FEATURE(journal, ~JFS_KNOWN_ROCOMPAT_FEATURES)) 5242f686ace1c8e2f680ffd450d143cdd01a649687aTheodore Ts'o return EXT2_ET_RO_UNSUPP_FEATURE; 5253b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 5260e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o /* We have now checked whether we know enough about the journal 5270e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o * format to be able to proceed safely, so any other checks that 5280e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o * fail we should attempt to recover from. */ 5290e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o if (jsb->s_blocksize != htonl(journal->j_blocksize)) { 5300e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o com_err(ctx->program_name, EXT2_ET_CORRUPT_SUPERBLOCK, 5310e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o _("%s: no valid journal superblock found\n"), 5320e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o ctx->device_name); 5330e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o return EXT2_ET_CORRUPT_SUPERBLOCK; 5343b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } 5353b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 5363b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (ntohl(jsb->s_maxlen) < journal->j_maxlen) 5373b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o journal->j_maxlen = ntohl(jsb->s_maxlen); 5383b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o else if (ntohl(jsb->s_maxlen) > journal->j_maxlen) { 5390e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o com_err(ctx->program_name, EXT2_ET_CORRUPT_SUPERBLOCK, 5400e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o _("%s: journal too short\n"), 5410e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o ctx->device_name); 5423b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return EXT2_ET_CORRUPT_SUPERBLOCK; 5433b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } 5443b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 5453b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o journal->j_tail_sequence = ntohl(jsb->s_sequence); 546ecf1b7767e1772f4c6dba8f02026057ed05397bdTheodore Ts'o journal->j_transaction_sequence = journal->j_tail_sequence; 5473b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o journal->j_tail = ntohl(jsb->s_start); 5483b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o journal->j_first = ntohl(jsb->s_first); 5493b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o journal->j_last = ntohl(jsb->s_maxlen); 5503b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 5513b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return 0; 5523b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o} 5533b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 55453ef44c40a3e425d2c700d8fd77a6b655aa121feTheodore Ts'ostatic void e2fsck_journal_reset_super(e2fsck_t ctx, journal_superblock_t *jsb, 5556a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o journal_t *journal) 5563b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o{ 5570e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o char *p; 558424cd2beb7c40a3e4cf96b5bf28b24e48554a754Theodore Ts'o union { 559424cd2beb7c40a3e4cf96b5bf28b24e48554a754Theodore Ts'o uuid_t uuid; 560424cd2beb7c40a3e4cf96b5bf28b24e48554a754Theodore Ts'o __u32 val[4]; 561424cd2beb7c40a3e4cf96b5bf28b24e48554a754Theodore Ts'o } u; 562424cd2beb7c40a3e4cf96b5bf28b24e48554a754Theodore Ts'o __u32 new_seq = 0; 563424cd2beb7c40a3e4cf96b5bf28b24e48554a754Theodore Ts'o int i; 564424cd2beb7c40a3e4cf96b5bf28b24e48554a754Theodore Ts'o 5650e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o /* Leave a valid existing V1 superblock signature alone. 5660e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o * Anything unrecognisable we overwrite with a new V2 5670e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o * signature. */ 5680e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o 5690e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o if (jsb->s_header.h_magic != htonl(JFS_MAGIC_NUMBER) || 5700e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o jsb->s_header.h_blocktype != htonl(JFS_SUPERBLOCK_V1)) { 5710e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o jsb->s_header.h_magic = htonl(JFS_MAGIC_NUMBER); 5720e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o jsb->s_header.h_blocktype = htonl(JFS_SUPERBLOCK_V2); 5730e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o } 5740e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o 5750e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o /* Zero out everything else beyond the superblock header */ 5760e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o 5770e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o p = ((char *) jsb) + sizeof(journal_header_t); 5780e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o memset (p, 0, ctx->fs->blocksize-sizeof(journal_header_t)); 5790e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o 5803b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o jsb->s_blocksize = htonl(ctx->fs->blocksize); 5810e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o jsb->s_maxlen = htonl(journal->j_maxlen); 5820e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o jsb->s_first = htonl(1); 5830e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o 584424cd2beb7c40a3e4cf96b5bf28b24e48554a754Theodore Ts'o /* Initialize the journal sequence number so that there is "no" 585424cd2beb7c40a3e4cf96b5bf28b24e48554a754Theodore Ts'o * chance we will find old "valid" transactions in the journal. 586424cd2beb7c40a3e4cf96b5bf28b24e48554a754Theodore Ts'o * This avoids the need to zero the whole journal (slow to do, 587424cd2beb7c40a3e4cf96b5bf28b24e48554a754Theodore Ts'o * and risky when we are just recovering the filesystem). 588424cd2beb7c40a3e4cf96b5bf28b24e48554a754Theodore Ts'o */ 589424cd2beb7c40a3e4cf96b5bf28b24e48554a754Theodore Ts'o uuid_generate(u.uuid); 590424cd2beb7c40a3e4cf96b5bf28b24e48554a754Theodore Ts'o for (i = 0; i < 4; i ++) 591424cd2beb7c40a3e4cf96b5bf28b24e48554a754Theodore Ts'o new_seq ^= u.val[i]; 592424cd2beb7c40a3e4cf96b5bf28b24e48554a754Theodore Ts'o jsb->s_sequence = htonl(new_seq); 5930e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o 5948cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o mark_buffer_dirty(journal->j_sb_buffer); 5950e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o ll_rw_block(WRITE, 1, &journal->j_sb_buffer); 5963b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o} 5973b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 5986a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'ostatic errcode_t e2fsck_journal_fix_corrupt_super(e2fsck_t ctx, 5996a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o journal_t *journal, 6006a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o struct problem_context *pctx) 6013b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o{ 6025dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o struct ext2_super_block *sb = ctx->fs->super; 6035dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o int recover = ctx->fs->super->s_feature_incompat & 6045dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o EXT3_FEATURE_INCOMPAT_RECOVER; 6053b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 6065dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o if (sb->s_feature_compat & EXT3_FEATURE_COMPAT_HAS_JOURNAL) { 6073b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (fix_problem(ctx, PR_0_JOURNAL_BAD_SUPER, pctx)) { 608b2f93192a1701855d4f5f05f0087c45e92a35681Theodore Ts'o e2fsck_journal_reset_super(ctx, journal->j_superblock, 609b2f93192a1701855d4f5f05f0087c45e92a35681Theodore Ts'o journal); 6103b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o journal->j_transaction_sequence = 1; 6113b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o e2fsck_clear_recover(ctx, recover); 6123b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return 0; 6133b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } 6143b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return EXT2_ET_CORRUPT_SUPERBLOCK; 6153b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } else if (e2fsck_journal_fix_bad_inode(ctx, pctx)) 6163b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return EXT2_ET_CORRUPT_SUPERBLOCK; 6173b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 6183b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return 0; 6193b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o} 6203b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 6216a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'ostatic void e2fsck_journal_release(e2fsck_t ctx, journal_t *journal, 6226a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o int reset, int drop) 6233b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o{ 6243b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o journal_superblock_t *jsb; 6253b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 6266a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o if (drop) 6276a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o mark_buffer_clean(journal->j_sb_buffer); 6286a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o else if (!(ctx->options & E2F_OPT_READONLY)) { 6293b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o jsb = journal->j_superblock; 6303b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o jsb->s_sequence = htonl(journal->j_transaction_sequence); 6313b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (reset) 6323b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o jsb->s_start = 0; /* this marks the journal as empty */ 6338cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o mark_buffer_dirty(journal->j_sb_buffer); 6343b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } 6353b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o brelse(journal->j_sb_buffer); 6363b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 6376d222f3217b11c9b27f92b4aafe47bfeb59b81faTheodore Ts'o if (ctx->journal_io) { 6386d222f3217b11c9b27f92b4aafe47bfeb59b81faTheodore Ts'o if (ctx->fs && ctx->fs->io != ctx->journal_io) 6396d222f3217b11c9b27f92b4aafe47bfeb59b81faTheodore Ts'o io_channel_close(ctx->journal_io); 6406d222f3217b11c9b27f92b4aafe47bfeb59b81faTheodore Ts'o ctx->journal_io = 0; 6416d222f3217b11c9b27f92b4aafe47bfeb59b81faTheodore Ts'o } 6426d222f3217b11c9b27f92b4aafe47bfeb59b81faTheodore Ts'o 643d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o#ifndef USE_INODE_IO 6443b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (journal->j_inode) 645c4e3d3f374b409500e3dd05c0b0eca6ac98a6b4eTheodore Ts'o ext2fs_free_mem(&journal->j_inode); 646d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o#endif 647d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o if (journal->j_fs_dev) 648c4e3d3f374b409500e3dd05c0b0eca6ac98a6b4eTheodore Ts'o ext2fs_free_mem(&journal->j_fs_dev); 649c4e3d3f374b409500e3dd05c0b0eca6ac98a6b4eTheodore Ts'o ext2fs_free_mem(&journal); 6503b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o} 6513b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 6529b5657591b1db9b82fe433f3f90e496f3df6a851Theodore Ts'o/* 6539b5657591b1db9b82fe433f3f90e496f3df6a851Theodore Ts'o * This function makes sure that the superblock fields regarding the 6549b5657591b1db9b82fe433f3f90e496f3df6a851Theodore Ts'o * journal are consistent. 6559b5657591b1db9b82fe433f3f90e496f3df6a851Theodore Ts'o */ 6563b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'oint e2fsck_check_ext3_journal(e2fsck_t ctx) 6573b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o{ 6585dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o struct ext2_super_block *sb = ctx->fs->super; 6593b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o journal_t *journal; 6605dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o int recover = ctx->fs->super->s_feature_incompat & 6615dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o EXT3_FEATURE_INCOMPAT_RECOVER; 6623b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o struct problem_context pctx; 663d37066a9fa14ff3c0e7f4ea95e07204fce95f41aTheodore Ts'o problem_t problem; 664d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o int reset = 0, force_fsck = 0; 6653b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o int retval; 6663b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 6673b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o /* If we don't have any journal features, don't do anything more */ 6685dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o if (!(sb->s_feature_compat & EXT3_FEATURE_COMPAT_HAS_JOURNAL) && 6695dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o !recover && sb->s_journal_inum == 0 && sb->s_journal_dev == 0 && 6705dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o uuid_is_null(sb->s_journal_uuid)) 6719b5657591b1db9b82fe433f3f90e496f3df6a851Theodore Ts'o return 0; 6723b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 6733b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o clear_problem_context(&pctx); 6745dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o pctx.num = sb->s_journal_inum; 6753b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 6763b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o retval = e2fsck_get_journal(ctx, &journal); 6773b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (retval) { 678f2d5c937034e6c07391549ef6d46b2c8db086c85Theodore Ts'o if ((retval == EXT2_ET_BAD_INODE_NUM) || 6796e4fbbeb500d6aa7aaa193f689356c487d461edeRichard Mortimer (retval == EXT2_ET_BAD_BLOCK_NUM) || 680f2d5c937034e6c07391549ef6d46b2c8db086c85Theodore Ts'o (retval == EXT2_ET_JOURNAL_TOO_SMALL) || 681f2d5c937034e6c07391549ef6d46b2c8db086c85Theodore Ts'o (retval == EXT2_ET_NO_JOURNAL)) 6823b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return e2fsck_journal_fix_bad_inode(ctx, &pctx); 6833b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return retval; 6843b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } 6853b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 6863b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o retval = e2fsck_journal_load(journal); 6873b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (retval) { 688c7f23364fd6d8d25d74e51ba5f342fc2230048d8Theodore Ts'o if ((retval == EXT2_ET_CORRUPT_SUPERBLOCK) || 6892f686ace1c8e2f680ffd450d143cdd01a649687aTheodore Ts'o ((retval == EXT2_ET_UNSUPP_FEATURE) && 6902f686ace1c8e2f680ffd450d143cdd01a649687aTheodore Ts'o (!fix_problem(ctx, PR_0_JOURNAL_UNSUPP_INCOMPAT, 6912f686ace1c8e2f680ffd450d143cdd01a649687aTheodore Ts'o &pctx))) || 6922f686ace1c8e2f680ffd450d143cdd01a649687aTheodore Ts'o ((retval == EXT2_ET_RO_UNSUPP_FEATURE) && 6932f686ace1c8e2f680ffd450d143cdd01a649687aTheodore Ts'o (!fix_problem(ctx, PR_0_JOURNAL_UNSUPP_ROCOMPAT, 6942f686ace1c8e2f680ffd450d143cdd01a649687aTheodore Ts'o &pctx))) || 695c7f23364fd6d8d25d74e51ba5f342fc2230048d8Theodore Ts'o ((retval == EXT2_ET_JOURNAL_UNSUPP_VERSION) && 696c7f23364fd6d8d25d74e51ba5f342fc2230048d8Theodore Ts'o (!fix_problem(ctx, PR_0_JOURNAL_UNSUPP_VERSION, &pctx)))) 6976a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o retval = e2fsck_journal_fix_corrupt_super(ctx, journal, 6986a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o &pctx); 6996a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o e2fsck_journal_release(ctx, journal, 0, 1); 7003b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return retval; 7013b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } 7023b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 7033b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o /* 7043b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o * We want to make the flags consistent here. We will not leave with 7053b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o * needs_recovery set but has_journal clear. We can't get in a loop 7063b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o * with -y, -n, or -p, only if a user isn't making up their mind. 7073b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o */ 7083b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'ono_has_journal: 7095dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o if (!(sb->s_feature_compat & EXT3_FEATURE_COMPAT_HAS_JOURNAL)) { 7105dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o recover = sb->s_feature_incompat & EXT3_FEATURE_INCOMPAT_RECOVER; 7113b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o pctx.str = "inode"; 7123b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (fix_problem(ctx, PR_0_JOURNAL_HAS_JOURNAL, &pctx)) { 7133b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (recover && 7143b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o !fix_problem(ctx, PR_0_JOURNAL_RECOVER_SET, &pctx)) 7153b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o goto no_has_journal; 716d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o /* 717d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o * Need a full fsck if we are releasing a 7188c2dc52180373f4e7b12e92669db59b1a52e2153Theodore Ts'o * journal stored on a reserved inode. 719d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o */ 720d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o force_fsck = recover || 721d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o (sb->s_journal_inum < EXT2_FIRST_INODE(sb)); 722d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o /* Clear all of the journal fields */ 7235dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o sb->s_journal_inum = 0; 724d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o sb->s_journal_dev = 0; 725d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o memset(sb->s_journal_uuid, 0, 726d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o sizeof(sb->s_journal_uuid)); 727d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o e2fsck_clear_recover(ctx, force_fsck); 7283b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } else if (!(ctx->options & E2F_OPT_READONLY)) { 7295dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o sb->s_feature_compat |= EXT3_FEATURE_COMPAT_HAS_JOURNAL; 7303b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o ext2fs_mark_super_dirty(ctx->fs); 7313b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } 7323b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } 7333b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 7345dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o if (sb->s_feature_compat & EXT3_FEATURE_COMPAT_HAS_JOURNAL && 7355dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o !(sb->s_feature_incompat & EXT3_FEATURE_INCOMPAT_RECOVER) && 7363b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o journal->j_superblock->s_start != 0) { 737d37066a9fa14ff3c0e7f4ea95e07204fce95f41aTheodore Ts'o /* Print status information */ 738d37066a9fa14ff3c0e7f4ea95e07204fce95f41aTheodore Ts'o fix_problem(ctx, PR_0_JOURNAL_RECOVERY_CLEAR, &pctx); 739d37066a9fa14ff3c0e7f4ea95e07204fce95f41aTheodore Ts'o if (ctx->superblock) 740d37066a9fa14ff3c0e7f4ea95e07204fce95f41aTheodore Ts'o problem = PR_0_JOURNAL_RUN_DEFAULT; 741d37066a9fa14ff3c0e7f4ea95e07204fce95f41aTheodore Ts'o else 742d37066a9fa14ff3c0e7f4ea95e07204fce95f41aTheodore Ts'o problem = PR_0_JOURNAL_RUN; 743d37066a9fa14ff3c0e7f4ea95e07204fce95f41aTheodore Ts'o if (fix_problem(ctx, problem, &pctx)) { 744d37066a9fa14ff3c0e7f4ea95e07204fce95f41aTheodore Ts'o ctx->options |= E2F_OPT_FORCE; 745d37066a9fa14ff3c0e7f4ea95e07204fce95f41aTheodore Ts'o sb->s_feature_incompat |= 746d37066a9fa14ff3c0e7f4ea95e07204fce95f41aTheodore Ts'o EXT3_FEATURE_INCOMPAT_RECOVER; 747d37066a9fa14ff3c0e7f4ea95e07204fce95f41aTheodore Ts'o ext2fs_mark_super_dirty(ctx->fs); 748d37066a9fa14ff3c0e7f4ea95e07204fce95f41aTheodore Ts'o } else if (fix_problem(ctx, 749d37066a9fa14ff3c0e7f4ea95e07204fce95f41aTheodore Ts'o PR_0_JOURNAL_RESET_JOURNAL, &pctx)) { 7503b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o reset = 1; 751d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o sb->s_state &= ~EXT2_VALID_FS; 752d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o ext2fs_mark_super_dirty(ctx->fs); 753d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o } 754d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o /* 755d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o * If the user answers no to the above question, we 756d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o * ignore the fact that journal apparently has data; 757d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o * accidentally replaying over valid data would be far 758d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o * worse than skipping a questionable recovery. 759d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o * 760d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o * XXX should we abort with a fatal error here? What 761d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o * will the ext3 kernel code do if a filesystem with 762d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o * !NEEDS_RECOVERY but with a non-zero 763d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o * journal->j_superblock->s_start is mounted? 764d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o */ 7653b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } 7663b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 7676a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o e2fsck_journal_release(ctx, journal, reset, 0); 7683b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return retval; 7693b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o} 7703b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 7716a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'ostatic errcode_t recover_ext3_journal(e2fsck_t ctx) 7723b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o{ 7733b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o journal_t *journal; 7743b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o int retval; 7753b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 7768cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o journal_init_revoke_caches(); 7773b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o retval = e2fsck_get_journal(ctx, &journal); 7783b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (retval) 779ecf1b7767e1772f4c6dba8f02026057ed05397bdTheodore Ts'o return retval; 780ecf1b7767e1772f4c6dba8f02026057ed05397bdTheodore Ts'o 7813b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o retval = e2fsck_journal_load(journal); 7823b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (retval) 7836a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o goto errout; 7843b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 7850e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o retval = journal_init_revoke(journal, 1024); 7860e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o if (retval) 7876a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o goto errout; 7880e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o 7893b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o retval = -journal_recover(journal); 790c0a083fac3b8f03ae15f5bf30c230c015538051eTheodore Ts'o if (retval) 791c0a083fac3b8f03ae15f5bf30c230c015538051eTheodore Ts'o goto errout; 792c0a083fac3b8f03ae15f5bf30c230c015538051eTheodore Ts'o 793c0a083fac3b8f03ae15f5bf30c230c015538051eTheodore Ts'o if (journal->j_superblock->s_errno) { 794c0a083fac3b8f03ae15f5bf30c230c015538051eTheodore Ts'o ctx->fs->super->s_state |= EXT2_ERROR_FS; 795c0a083fac3b8f03ae15f5bf30c230c015538051eTheodore Ts'o ext2fs_mark_super_dirty(ctx->fs); 796c0a083fac3b8f03ae15f5bf30c230c015538051eTheodore Ts'o journal->j_superblock->s_errno = 0; 7978cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o mark_buffer_dirty(journal->j_sb_buffer); 798c0a083fac3b8f03ae15f5bf30c230c015538051eTheodore Ts'o } 799c0a083fac3b8f03ae15f5bf30c230c015538051eTheodore Ts'o 8006a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'oerrout: 801d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o journal_destroy_revoke(journal); 8028cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o journal_destroy_revoke_caches(); 8036a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o e2fsck_journal_release(ctx, journal, 1, 0); 8043b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return retval; 8053b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o} 8063b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 80780bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'oint e2fsck_run_ext3_journal(e2fsck_t ctx) 80880bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o{ 80980bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o io_manager io_ptr = ctx->fs->io->manager; 81080bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o int blocksize = ctx->fs->blocksize; 811ecf1b7767e1772f4c6dba8f02026057ed05397bdTheodore Ts'o errcode_t retval, recover_retval; 8128394902e04e64ed10ca81e869892c00143ee4931Theodore Ts'o 8138394902e04e64ed10ca81e869892c00143ee4931Theodore Ts'o printf(_("%s: recovering journal\n"), ctx->device_name); 814ecf1b7767e1772f4c6dba8f02026057ed05397bdTheodore Ts'o if (ctx->options & E2F_OPT_READONLY) { 8158394902e04e64ed10ca81e869892c00143ee4931Theodore Ts'o printf(_("%s: won't do journal recovery while read-only\n"), 816ecf1b7767e1772f4c6dba8f02026057ed05397bdTheodore Ts'o ctx->device_name); 817ecf1b7767e1772f4c6dba8f02026057ed05397bdTheodore Ts'o return EXT2_ET_FILE_RO; 818ecf1b7767e1772f4c6dba8f02026057ed05397bdTheodore Ts'o } 819ecf1b7767e1772f4c6dba8f02026057ed05397bdTheodore Ts'o 8200f2cfe25796bd53b920b1607410bf94251f17fbcTheodore Ts'o if (ctx->fs->flags & EXT2_FLAG_DIRTY) 8213c6b8977d44c66f0a50dd77c18a78b57b1022f8cTheodore Ts'o ext2fs_flush(ctx->fs); /* Force out any modifications */ 822d051521278790e5fc7d97d59bb3be6b662a76365Theodore Ts'o 823ecf1b7767e1772f4c6dba8f02026057ed05397bdTheodore Ts'o recover_retval = recover_ext3_journal(ctx); 82480bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o 82580bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o /* 82680bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o * Reload the filesystem context to get up-to-date data from disk 82780bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o * because journal recovery will change the filesystem under us. 82880bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o */ 82980bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o ext2fs_close(ctx->fs); 830ecf1b7767e1772f4c6dba8f02026057ed05397bdTheodore Ts'o retval = ext2fs_open(ctx->filesystem_name, EXT2_FLAG_RW, 83180bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o ctx->superblock, blocksize, io_ptr, 83280bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o &ctx->fs); 83380bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o 83480bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o if (retval) { 83580bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o com_err(ctx->program_name, retval, 83680bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o _("while trying to re-open %s"), 83780bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o ctx->device_name); 83899a2cc969fb47e8c87965aa9fb93cabf6fe4ac1eTheodore Ts'o fatal_error(ctx, 0); 83980bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o } 84080bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o ctx->fs->priv_data = ctx; 8418dceb92407f751d1a8aecd4bfb36d1fe2dc3cf9aTheodore Ts'o ctx->fs->now = ctx->now; 842058ad1c70c9a097d282270c6f76d3c3493e15fe2Theodore Ts'o ctx->fs->flags |= EXT2_FLAG_MASTER_SB_ONLY; 84317390c047f5470eec005c5461a7926d03d6bbbe7Theodore Ts'o 844ecf1b7767e1772f4c6dba8f02026057ed05397bdTheodore Ts'o /* Set the superblock flags */ 845ecf1b7767e1772f4c6dba8f02026057ed05397bdTheodore Ts'o e2fsck_clear_recover(ctx, recover_retval); 846ecf1b7767e1772f4c6dba8f02026057ed05397bdTheodore Ts'o return recover_retval; 84717390c047f5470eec005c5461a7926d03d6bbbe7Theodore Ts'o} 848773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o 849773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o/* 850773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o * This function will move the journal inode from a visible file in 851773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o * the filesystem directory hierarchy to the reserved inode if necessary. 852773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o */ 853546a1ff18cc912003883ff67ba3e87c69f700fc4Theodore Ts'ostatic const char * const journal_names[] = { 854773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o ".journal", "journal", ".journal.dat", "journal.dat", 0 }; 855773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o 856773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'ovoid e2fsck_move_ext3_journal(e2fsck_t ctx) 857773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o{ 858773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o struct ext2_super_block *sb = ctx->fs->super; 859773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o struct problem_context pctx; 860773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o struct ext2_inode inode; 861773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o ext2_filsys fs = ctx->fs; 862773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o ext2_ino_t ino; 863773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o errcode_t retval; 864773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o const char * const * cpp; 865773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o int group, mount_flags; 866773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o 867a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o clear_problem_context(&pctx); 868a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o 869773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o /* 870773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o * If the filesystem is opened read-only, or there is no 871a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o * journal, then do nothing. 872773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o */ 873773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o if ((ctx->options & E2F_OPT_READONLY) || 874773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o (sb->s_journal_inum == 0) || 875773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o !(sb->s_feature_compat & EXT3_FEATURE_COMPAT_HAS_JOURNAL)) 876773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o return; 877773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o 878773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o /* 879a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o * Read in the journal inode 880a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o */ 881a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o if (ext2fs_read_inode(fs, sb->s_journal_inum, &inode) != 0) 882a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o return; 883a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o 884a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o /* 885a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o * If it's necessary to backup the journal inode, do so. 886a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o */ 887a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o if ((sb->s_jnl_backup_type == 0) || 888a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o ((sb->s_jnl_backup_type == EXT3_JNL_BACKUP_BLOCKS) && 889a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o memcmp(inode.i_block, sb->s_jnl_blocks, EXT2_N_BLOCKS*4))) { 890a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o if (fix_problem(ctx, PR_0_BACKUP_JNL, &pctx)) { 891a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o memcpy(sb->s_jnl_blocks, inode.i_block, 892a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o EXT2_N_BLOCKS*4); 893a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o sb->s_jnl_blocks[16] = inode.i_size; 894a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o sb->s_jnl_backup_type = EXT3_JNL_BACKUP_BLOCKS; 895a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o ext2fs_mark_super_dirty(fs); 89627479eb2270c344a0042b4c492337b67a547c393Theodore Ts'o fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY; 897a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o } 898a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o } 899a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o 900a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o /* 901a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o * If the journal is already the hidden inode, then do nothing 902a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o */ 903a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o if (sb->s_journal_inum == EXT2_JOURNAL_INO) 904a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o return; 905a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o 906a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o /* 907a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o * The journal inode had better have only one link and not be readable. 908a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o */ 909a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o if (inode.i_links_count != 1) 910a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o return; 911a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o 912a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o /* 913773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o * If the filesystem is mounted, or we can't tell whether 914773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o * or not it's mounted, do nothing. 915773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o */ 916773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o retval = ext2fs_check_if_mounted(ctx->filesystem_name, &mount_flags); 917773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o if (retval || (mount_flags & EXT2_MF_MOUNTED)) 918773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o return; 919773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o 920773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o /* 921773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o * If we can't find the name of the journal inode, then do 922773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o * nothing. 923773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o */ 924773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o for (cpp = journal_names; *cpp; cpp++) { 925773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o retval = ext2fs_lookup(fs, EXT2_ROOT_INO, *cpp, 926773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o strlen(*cpp), 0, &ino); 927773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o if ((retval == 0) && (ino == sb->s_journal_inum)) 928773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o break; 929773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o } 930773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o if (*cpp == 0) 931773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o return; 932773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o 933773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o /* We need the inode bitmap to be loaded */ 934773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o retval = ext2fs_read_bitmaps(fs); 935773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o if (retval) 936773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o return; 937773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o 938773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o pctx.str = *cpp; 939773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o if (!fix_problem(ctx, PR_0_MOVE_JOURNAL, &pctx)) 940773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o return; 941773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o 942773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o /* 943773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o * OK, we've done all the checks, let's actually move the 944773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o * journal inode. Errors at this point mean we need to force 945773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o * an ext2 filesystem check. 946773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o */ 947773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o if ((retval = ext2fs_unlink(fs, EXT2_ROOT_INO, *cpp, ino, 0)) != 0) 948773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o goto err_out; 949773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o if ((retval = ext2fs_write_inode(fs, EXT2_JOURNAL_INO, &inode)) != 0) 950773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o goto err_out; 951773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o sb->s_journal_inum = EXT2_JOURNAL_INO; 952773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o ext2fs_mark_super_dirty(fs); 95327479eb2270c344a0042b4c492337b67a547c393Theodore Ts'o fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY; 954773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o inode.i_links_count = 0; 9551f3ad14a5ad5df3ac4012d41ef5d76411cd8fff3Theodore Ts'o inode.i_dtime = ctx->now; 956773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o if ((retval = ext2fs_write_inode(fs, ino, &inode)) != 0) 957773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o goto err_out; 958773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o 959773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o group = ext2fs_group_of_ino(fs, ino); 960773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o ext2fs_unmark_inode_bitmap(fs->inode_map, ino); 961773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o ext2fs_mark_ib_dirty(fs); 962773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o fs->group_desc[group].bg_free_inodes_count++; 963773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o fs->super->s_free_inodes_count++; 964773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o return; 965773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o 966773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'oerr_out: 967773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o pctx.errcode = retval; 968773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o fix_problem(ctx, PR_0_ERR_MOVE_JOURNAL, &pctx); 969773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o fs->super->s_state &= ~EXT2_VALID_FS; 970773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o ext2fs_mark_super_dirty(fs); 971773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o return; 972773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o} 973773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o 974b1c52b26a44efeb366402985763c242a4b21aeb1Theodore Ts'o/* 975b1c52b26a44efeb366402985763c242a4b21aeb1Theodore Ts'o * This function makes sure the superblock hint for the external 976b1c52b26a44efeb366402985763c242a4b21aeb1Theodore Ts'o * journal is correct. 977b1c52b26a44efeb366402985763c242a4b21aeb1Theodore Ts'o */ 978b1c52b26a44efeb366402985763c242a4b21aeb1Theodore Ts'oint e2fsck_fix_ext3_journal_hint(e2fsck_t ctx) 979b1c52b26a44efeb366402985763c242a4b21aeb1Theodore Ts'o{ 980b1c52b26a44efeb366402985763c242a4b21aeb1Theodore Ts'o struct ext2_super_block *sb = ctx->fs->super; 981b1c52b26a44efeb366402985763c242a4b21aeb1Theodore Ts'o struct problem_context pctx; 982b1c52b26a44efeb366402985763c242a4b21aeb1Theodore Ts'o char uuid[37], *journal_name; 983b1c52b26a44efeb366402985763c242a4b21aeb1Theodore Ts'o struct stat st; 984b1c52b26a44efeb366402985763c242a4b21aeb1Theodore Ts'o 985b1c52b26a44efeb366402985763c242a4b21aeb1Theodore Ts'o if (!(sb->s_feature_compat & EXT3_FEATURE_COMPAT_HAS_JOURNAL) || 986b1c52b26a44efeb366402985763c242a4b21aeb1Theodore Ts'o uuid_is_null(sb->s_journal_uuid)) 987b1c52b26a44efeb366402985763c242a4b21aeb1Theodore Ts'o return 0; 988b1c52b26a44efeb366402985763c242a4b21aeb1Theodore Ts'o 989b1c52b26a44efeb366402985763c242a4b21aeb1Theodore Ts'o uuid_unparse(sb->s_journal_uuid, uuid); 990b1c52b26a44efeb366402985763c242a4b21aeb1Theodore Ts'o journal_name = blkid_get_devname(ctx->blkid, "UUID", uuid); 991b1c52b26a44efeb366402985763c242a4b21aeb1Theodore Ts'o if (!journal_name) 992b1c52b26a44efeb366402985763c242a4b21aeb1Theodore Ts'o return 0; 993b1c52b26a44efeb366402985763c242a4b21aeb1Theodore Ts'o 994b1c52b26a44efeb366402985763c242a4b21aeb1Theodore Ts'o if (stat(journal_name, &st) < 0) 995b1c52b26a44efeb366402985763c242a4b21aeb1Theodore Ts'o return 0; 996b1c52b26a44efeb366402985763c242a4b21aeb1Theodore Ts'o 997b1c52b26a44efeb366402985763c242a4b21aeb1Theodore Ts'o if (st.st_rdev != sb->s_journal_dev) { 998b1c52b26a44efeb366402985763c242a4b21aeb1Theodore Ts'o clear_problem_context(&pctx); 999b1c52b26a44efeb366402985763c242a4b21aeb1Theodore Ts'o pctx.num = st.st_rdev; 1000b1c52b26a44efeb366402985763c242a4b21aeb1Theodore Ts'o if (fix_problem(ctx, PR_0_EXTERNAL_JOURNAL_HINT, &pctx)) { 1001b1c52b26a44efeb366402985763c242a4b21aeb1Theodore Ts'o sb->s_journal_dev = st.st_rdev; 1002b1c52b26a44efeb366402985763c242a4b21aeb1Theodore Ts'o ext2fs_mark_super_dirty(ctx->fs); 1003b1c52b26a44efeb366402985763c242a4b21aeb1Theodore Ts'o } 1004b1c52b26a44efeb366402985763c242a4b21aeb1Theodore Ts'o } 1005b1c52b26a44efeb366402985763c242a4b21aeb1Theodore Ts'o 1006b1c52b26a44efeb366402985763c242a4b21aeb1Theodore Ts'o free(journal_name); 1007b1c52b26a44efeb366402985763c242a4b21aeb1Theodore Ts'o return 0; 1008b1c52b26a44efeb366402985763c242a4b21aeb1Theodore Ts'o} 1009