journal.c revision a435ec3449694a8fa299337197cc09624960a3a6
117390c047f5470eec005c5461a7926d03d6bbbe7Theodore Ts'o/* 217390c047f5470eec005c5461a7926d03d6bbbe7Theodore Ts'o * journal.c --- code for handling the "ext3" journal 33b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o * 43b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o * Copyright (C) 2000 Andreas Dilger 53b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o * Copyright (C) 2000 Theodore Ts'o 63b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o * 73b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o * Parts of the code are based on fs/jfs/journal.c by Stephen C. Tweedie 83b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o * Copyright (C) 1999 Red Hat Software 93b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o * 103b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o * This file may be redistributed under the terms of the 113b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o * GNU General Public License version 2 or at your discretion 123b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o * any later version. 1317390c047f5470eec005c5461a7926d03d6bbbe7Theodore Ts'o */ 1417390c047f5470eec005c5461a7926d03d6bbbe7Theodore Ts'o 153b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o#ifdef HAVE_SYS_MOUNT_H 163b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o#include <sys/mount.h> 173b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o#define MNT_FL (MS_MGC_VAL | MS_RDONLY) 183b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o#endif 193b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o#ifdef HAVE_SYS_STAT_H 203b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o#include <sys/stat.h> 213b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o#endif 2217390c047f5470eec005c5461a7926d03d6bbbe7Theodore Ts'o 2353ef44c40a3e425d2c700d8fd77a6b655aa121feTheodore Ts'o#define E2FSCK_INCLUDE_INLINE_FUNCS 240e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o#include "jfs_user.h" 253b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o#include "problem.h" 263b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o#include "uuid/uuid.h" 2717390c047f5470eec005c5461a7926d03d6bbbe7Theodore Ts'o 288cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o#ifdef CONFIG_JBD_DEBUG /* Enabled by configure --enable-jfs-debug */ 293b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'ostatic int bh_count = 0; 303b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o#endif 313b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 32d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o/* 33d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o * Define USE_INODE_IO to use the inode_io.c / fileio.c codepaths. 34d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o * This creates a larger static binary, and a smaller binary using 35d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o * shared libraries. It's also probably slightly less CPU-efficient, 36d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o * which is why it's not on by default. But, it's a good way of 37d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o * testing the functions in inode_io.c and fileio.c. 38d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o */ 39d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o#undef USE_INODE_IO 40d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o 41b2f93192a1701855d4f5f05f0087c45e92a35681Theodore Ts'o/* Kernel compatibility functions for handling the journal. These allow us 42b2f93192a1701855d4f5f05f0087c45e92a35681Theodore Ts'o * to use the recovery.c file virtually unchanged from the kernel, so we 43b2f93192a1701855d4f5f05f0087c45e92a35681Theodore Ts'o * don't have to do much to keep kernel and user recovery in sync. 44b2f93192a1701855d4f5f05f0087c45e92a35681Theodore Ts'o */ 458cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'oint journal_bmap(journal_t *journal, blk_t block, unsigned long *phys) 463b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o{ 47d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o#ifdef USE_INODE_IO 48d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o *phys = block; 49d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o return 0; 50d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o#else 518cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o struct inode *inode = journal->j_inode; 528cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o errcode_t retval; 538cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o blk_t pblk; 543b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 558cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o if (!inode) { 568cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o *phys = block; 578cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o return 0; 588cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o } 593b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 608cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o retval= ext2fs_bmap(inode->i_ctx->fs, inode->i_ino, 618cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o &inode->i_ext2, NULL, 0, block, &pblk); 628cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o *phys = pblk; 638cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o return (retval); 64d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o#endif 653b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o} 663b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 678cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'ostruct buffer_head *getblk(kdev_t kdev, blk_t blocknr, int blocksize) 683b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o{ 693b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o struct buffer_head *bh; 703b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 718cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o bh = e2fsck_allocate_memory(kdev->k_ctx, sizeof(*bh), "block buffer"); 723b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (!bh) 733b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return NULL; 743b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 753b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o jfs_debug(4, "getblk for block %lu (%d bytes)(total %d)\n", 7653ef44c40a3e425d2c700d8fd77a6b655aa121feTheodore Ts'o (unsigned long) blocknr, blocksize, ++bh_count); 773b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 788cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o bh->b_ctx = kdev->k_ctx; 798cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o if (kdev->k_dev == K_DEV_FS) 808cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o bh->b_io = kdev->k_ctx->fs->io; 818cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o else 828cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o bh->b_io = kdev->k_ctx->journal_io; 833b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o bh->b_size = blocksize; 843b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o bh->b_blocknr = blocknr; 853b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 863b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return bh; 873b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o} 883b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 890e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'ovoid ll_rw_block(int rw, int nr, struct buffer_head *bhp[]) 903b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o{ 913b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o int retval; 920e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o struct buffer_head *bh; 933b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 940e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o for (; nr > 0; --nr) { 950e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o bh = *bhp++; 960e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o if (rw == READ && !bh->b_uptodate) { 970e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o jfs_debug(3, "reading block %lu/%p\n", 9853ef44c40a3e425d2c700d8fd77a6b655aa121feTheodore Ts'o (unsigned long) bh->b_blocknr, (void *) bh); 998cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o retval = io_channel_read_blk(bh->b_io, 1000e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o bh->b_blocknr, 1010e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o 1, bh->b_data); 1020e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o if (retval) { 1030e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o com_err(bh->b_ctx->device_name, retval, 1040e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o "while reading block %ld\n", 1050e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o bh->b_blocknr); 1060e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o bh->b_err = retval; 1070e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o continue; 1080e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o } 1090e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o bh->b_uptodate = 1; 1100e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o } else if (rw == WRITE && bh->b_dirty) { 1110e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o jfs_debug(3, "writing block %lu/%p\n", 11253ef44c40a3e425d2c700d8fd77a6b655aa121feTheodore Ts'o (unsigned long) bh->b_blocknr, (void *) bh); 1138cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o retval = io_channel_write_blk(bh->b_io, 1140e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o bh->b_blocknr, 1150e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o 1, bh->b_data); 1160e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o if (retval) { 1170e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o com_err(bh->b_ctx->device_name, retval, 1180e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o "while writing block %ld\n", 1190e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o bh->b_blocknr); 1200e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o bh->b_err = retval; 1210e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o continue; 1220e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o } 1230e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o bh->b_dirty = 0; 1240e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o bh->b_uptodate = 1; 1250e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o } else 1260e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o jfs_debug(3, "no-op %s for block %lu\n", 1270e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o rw == READ ? "read" : "write", 12853ef44c40a3e425d2c700d8fd77a6b655aa121feTheodore Ts'o (unsigned long) bh->b_blocknr); 1290e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o } 1303b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o} 1313b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 1328cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'ovoid mark_buffer_dirty(struct buffer_head *bh) 1333b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o{ 1348cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o bh->b_dirty = 1; 1353b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o} 1363b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 1376a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'ostatic void mark_buffer_clean(struct buffer_head * bh) 1386a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o{ 1396a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o bh->b_dirty = 0; 1406a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o} 1416a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o 1423b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'ovoid brelse(struct buffer_head *bh) 1433b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o{ 1443b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (bh->b_dirty) 1450e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o ll_rw_block(WRITE, 1, &bh); 1463b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o jfs_debug(3, "freeing block %lu/%p (total %d)\n", 14753ef44c40a3e425d2c700d8fd77a6b655aa121feTheodore Ts'o (unsigned long) bh->b_blocknr, (void *) bh, --bh_count); 148c4e3d3f374b409500e3dd05c0b0eca6ac98a6b4eTheodore Ts'o ext2fs_free_mem(&bh); 1493b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o} 1503b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 1513b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'oint buffer_uptodate(struct buffer_head *bh) 1523b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o{ 1533b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return bh->b_uptodate; 1543b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o} 1553b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 15615986f7931e1fe65621b4defb5522c9bf8da76efTheodore Ts'ovoid mark_buffer_uptodate(struct buffer_head *bh, int val) 15715986f7931e1fe65621b4defb5522c9bf8da76efTheodore Ts'o{ 15815986f7931e1fe65621b4defb5522c9bf8da76efTheodore Ts'o bh->b_uptodate = val; 15915986f7931e1fe65621b4defb5522c9bf8da76efTheodore Ts'o} 16015986f7931e1fe65621b4defb5522c9bf8da76efTheodore Ts'o 1613b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'ovoid wait_on_buffer(struct buffer_head *bh) 1623b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o{ 1633b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (!bh->b_uptodate) 1640e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o ll_rw_block(READ, 1, &bh); 1653b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o} 1663b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 16780bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o 1683b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'ostatic void e2fsck_clear_recover(e2fsck_t ctx, int error) 1693b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o{ 1705dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o ctx->fs->super->s_feature_incompat &= ~EXT3_FEATURE_INCOMPAT_RECOVER; 1713b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 1723b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o /* if we had an error doing journal recovery, we need a full fsck */ 1733b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (error) 1745dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o ctx->fs->super->s_state &= ~EXT2_VALID_FS; 1753b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o ext2fs_mark_super_dirty(ctx->fs); 1763b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o} 1773b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 178d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'ostatic errcode_t e2fsck_get_journal(e2fsck_t ctx, journal_t **ret_journal) 1793b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o{ 180d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o struct ext2_super_block *sb = ctx->fs->super; 181d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o struct ext2_super_block jsuper; 182d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o struct problem_context pctx; 183d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o struct buffer_head *bh; 184d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o struct inode *j_inode = NULL; 185d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o struct kdev_s *dev_fs = NULL, *dev_journal; 1863e69906495d5898849a6154b0311b5d4a84a27aeTheodore Ts'o const char *journal_name = 0; 187d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o journal_t *journal = NULL; 1883e69906495d5898849a6154b0311b5d4a84a27aeTheodore Ts'o errcode_t retval = 0; 1893e69906495d5898849a6154b0311b5d4a84a27aeTheodore Ts'o io_manager io_ptr = 0; 190d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o unsigned long start = 0; 191a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o blk_t blk; 192d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o int ext_journal = 0; 193a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o int tried_backup_jnl = 0; 194a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o int i; 195d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o 196d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o clear_problem_context(&pctx); 197d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o 198d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o journal = e2fsck_allocate_memory(ctx, sizeof(journal_t), "journal"); 199d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o if (!journal) { 2003b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return EXT2_ET_NO_MEMORY; 2013b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } 2023b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 2038cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o dev_fs = e2fsck_allocate_memory(ctx, 2*sizeof(struct kdev_s), "kdev"); 2048cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o if (!dev_fs) { 2058cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o retval = EXT2_ET_NO_MEMORY; 2068cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o goto errout; 2078cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o } 2088cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o dev_journal = dev_fs+1; 2098cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o 2108cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o dev_fs->k_ctx = dev_journal->k_ctx = ctx; 2118cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o dev_fs->k_dev = K_DEV_FS; 2128cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o dev_journal->k_dev = K_DEV_JOURNAL; 2138cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o 214d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o journal->j_dev = dev_journal; 215d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o journal->j_fs_dev = dev_fs; 216d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o journal->j_inode = NULL; 217d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o journal->j_blocksize = ctx->fs->blocksize; 2183b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 219d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o if (uuid_is_null(sb->s_journal_uuid)) { 220d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o if (!sb->s_journal_inum) 221d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o return EXT2_ET_BAD_INODE_NUM; 222d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o j_inode = e2fsck_allocate_memory(ctx, sizeof(*j_inode), 223d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o "journal inode"); 224d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o if (!j_inode) { 225d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o retval = EXT2_ET_NO_MEMORY; 226d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o goto errout; 227d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o } 2283b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 229d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o j_inode->i_ctx = ctx; 230d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o j_inode->i_ino = sb->s_journal_inum; 231d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o 232d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o if ((retval = ext2fs_read_inode(ctx->fs, 233d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o sb->s_journal_inum, 234a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o &j_inode->i_ext2))) { 235a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o try_backup_journal: 236a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o if (sb->s_jnl_backup_type != EXT3_JNL_BACKUP_BLOCKS || 237a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o tried_backup_jnl) 238a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o goto errout; 239a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o memset(&j_inode->i_ext2, 0, sizeof(struct ext2_inode)); 240a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o memcpy(&j_inode->i_ext2.i_block[0], sb->s_jnl_blocks, 241a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o EXT2_N_BLOCKS*4); 242a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o j_inode->i_ext2.i_size = sb->s_jnl_blocks[16]; 243a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o j_inode->i_ext2.i_links_count = 1; 244a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o j_inode->i_ext2.i_mode = LINUX_S_IFREG | 0600; 245a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o tried_backup_jnl++; 246a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o } 247d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o if (!j_inode->i_ext2.i_links_count || 248d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o !LINUX_S_ISREG(j_inode->i_ext2.i_mode)) { 249d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o retval = EXT2_ET_NO_JOURNAL; 250a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o goto try_backup_journal; 251d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o } 252d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o if (j_inode->i_ext2.i_size / journal->j_blocksize < 253d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o JFS_MIN_JOURNAL_BLOCKS) { 254d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o retval = EXT2_ET_JOURNAL_TOO_SMALL; 255a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o goto try_backup_journal; 256a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o } 257a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o for (i=0; i < EXT2_N_BLOCKS; i++) { 258a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o blk = j_inode->i_ext2.i_block[i]; 259a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o if (!blk) { 260a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o if (i < EXT2_NDIR_BLOCKS) { 261a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o retval = EXT2_ET_JOURNAL_TOO_SMALL; 262a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o goto try_backup_journal; 263a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o } 264a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o continue; 265a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o } 266a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o if (blk < sb->s_first_data_block || 267a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o blk >= sb->s_blocks_count) { 268a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o retval = EXT2_ET_BAD_BLOCK_NUM; 269a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o goto try_backup_journal; 270a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o } 271d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o } 272d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o journal->j_maxlen = j_inode->i_ext2.i_size / journal->j_blocksize; 2733b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 274d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o#ifdef USE_INODE_IO 275a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o retval = ext2fs_inode_io_intern2(ctx->fs, sb->s_journal_inum, 276a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o &j_inode->i_ext2, 277a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o &journal_name); 278d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o if (retval) 279d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o goto errout; 2803b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 281d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o io_ptr = inode_io_manager; 282d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o#else 283d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o journal->j_inode = j_inode; 284d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o ctx->journal_io = ctx->fs->io; 285d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o if ((retval = journal_bmap(journal, 0, &start)) != 0) 286d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o goto errout; 287d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o#endif 288d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o } else { 289d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o ext_journal = 1; 290f364093b1956def0b0f1d037852cbb645284d5f2Theodore Ts'o if (!ctx->journal_name) { 291f364093b1956def0b0f1d037852cbb645284d5f2Theodore Ts'o char uuid[37]; 292f364093b1956def0b0f1d037852cbb645284d5f2Theodore Ts'o 293f364093b1956def0b0f1d037852cbb645284d5f2Theodore Ts'o uuid_unparse(sb->s_journal_uuid, uuid); 294f364093b1956def0b0f1d037852cbb645284d5f2Theodore Ts'o ctx->journal_name = blkid_get_devname(ctx->blkid, 295f364093b1956def0b0f1d037852cbb645284d5f2Theodore Ts'o "UUID", uuid); 296f364093b1956def0b0f1d037852cbb645284d5f2Theodore Ts'o if (!ctx->journal_name) 297f364093b1956def0b0f1d037852cbb645284d5f2Theodore Ts'o ctx->journal_name = blkid_devno_to_devname(sb->s_journal_dev); 298d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o } 299f364093b1956def0b0f1d037852cbb645284d5f2Theodore Ts'o journal_name = ctx->journal_name; 300d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o 301d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o if (!journal_name) { 302d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o fix_problem(ctx, PR_0_CANT_FIND_JOURNAL, &pctx); 303d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o return EXT2_ET_LOAD_EXT_JOURNAL; 304d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o } 305d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o 306d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o jfs_debug(1, "Using journal file %s\n", journal_name); 307d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o io_ptr = unix_io_manager; 3083b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } 3093b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 310d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o#if 0 311d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o test_io_backing_manager = io_ptr; 312adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o io_ptr = test_io_manager; 313adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o#endif 314d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o#ifndef USE_INODE_IO 315d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o if (ext_journal) 316d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o#endif 317d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o retval = io_ptr->open(journal_name, IO_FLAG_RW, 318d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o &ctx->journal_io); 3196d222f3217b11c9b27f92b4aafe47bfeb59b81faTheodore Ts'o if (retval) 320d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o goto errout; 321adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o 322d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o io_channel_set_blksize(ctx->journal_io, ctx->fs->blocksize); 323d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o 324d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o if (ext_journal) { 325d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o if (ctx->fs->blocksize == 1024) 326d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o start = 1; 327d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o bh = getblk(dev_journal, start, ctx->fs->blocksize); 328d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o if (!bh) { 329d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o retval = EXT2_ET_NO_MEMORY; 330d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o goto errout; 331d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o } 332d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o ll_rw_block(READ, 1, &bh); 333d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o if ((retval = bh->b_err) != 0) 334d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o goto errout; 335d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o memcpy(&jsuper, start ? bh->b_data : bh->b_data + 1024, 336d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o sizeof(jsuper)); 337d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o brelse(bh); 338adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o#ifdef EXT2FS_ENABLE_SWAPFS 339d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o if (jsuper.s_magic == ext2fs_swab16(EXT2_SUPER_MAGIC)) 340d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o ext2fs_swap_super(&jsuper); 341adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o#endif 342d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o if (jsuper.s_magic != EXT2_SUPER_MAGIC || 343d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o !(jsuper.s_feature_incompat & EXT3_FEATURE_INCOMPAT_JOURNAL_DEV)) { 344d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o fix_problem(ctx, PR_0_EXT_JOURNAL_BAD_SUPER, &pctx); 345d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o retval = EXT2_ET_LOAD_EXT_JOURNAL; 346d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o goto errout; 347d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o } 348d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o /* Make sure the journal UUID is correct */ 349d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o if (memcmp(jsuper.s_uuid, ctx->fs->super->s_journal_uuid, 350d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o sizeof(jsuper.s_uuid))) { 351d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o fix_problem(ctx, PR_0_JOURNAL_BAD_UUID, &pctx); 352d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o retval = EXT2_ET_LOAD_EXT_JOURNAL; 353d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o goto errout; 354d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o } 355adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o 356d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o journal->j_maxlen = jsuper.s_blocks_count; 357d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o start++; 3583b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } 3593b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 360d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o if (!(bh = getblk(dev_journal, start, journal->j_blocksize))) { 361adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o retval = EXT2_ET_NO_MEMORY; 362adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o goto errout; 363adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o } 364adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o 365d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o journal->j_sb_buffer = bh; 366d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o journal->j_superblock = (journal_superblock_t *)bh->b_data; 367d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o 368d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o#ifdef USE_INODE_IO 369d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o if (j_inode) 370c4e3d3f374b409500e3dd05c0b0eca6ac98a6b4eTheodore Ts'o ext2fs_free_mem(&j_inode); 371d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o#endif 372d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o 373d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o *ret_journal = journal; 374adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o return 0; 375adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o 376adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'oerrout: 377d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o if (dev_fs) 378c4e3d3f374b409500e3dd05c0b0eca6ac98a6b4eTheodore Ts'o ext2fs_free_mem(&dev_fs); 379d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o if (j_inode) 380c4e3d3f374b409500e3dd05c0b0eca6ac98a6b4eTheodore Ts'o ext2fs_free_mem(&j_inode); 381d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o if (journal) 382c4e3d3f374b409500e3dd05c0b0eca6ac98a6b4eTheodore Ts'o ext2fs_free_mem(&journal); 383adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o return retval; 384d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o 3853b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o} 3863b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 3876a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'ostatic errcode_t e2fsck_journal_fix_bad_inode(e2fsck_t ctx, 3886a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o struct problem_context *pctx) 3893b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o{ 3905dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o struct ext2_super_block *sb = ctx->fs->super; 3915dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o int recover = ctx->fs->super->s_feature_incompat & 3925dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o EXT3_FEATURE_INCOMPAT_RECOVER; 3935dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o int has_journal = ctx->fs->super->s_feature_compat & 3945dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o EXT3_FEATURE_COMPAT_HAS_JOURNAL; 3953b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 3965dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o if (has_journal || sb->s_journal_inum) { 3973b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o /* The journal inode is bogus, remove and force full fsck */ 3987e92dfae9e60947a20a2078b7871b073441dac44Theodore Ts'o pctx->ino = sb->s_journal_inum; 3993b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (fix_problem(ctx, PR_0_JOURNAL_BAD_INODE, pctx)) { 4005dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o if (has_journal && sb->s_journal_inum) 4013b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o printf("*** ext3 journal has been deleted - " 4023b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o "filesystem is now ext2 only ***\n\n"); 4035dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o sb->s_feature_compat &= ~EXT3_FEATURE_COMPAT_HAS_JOURNAL; 4045dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o sb->s_journal_inum = 0; 405424cd2beb7c40a3e4cf96b5bf28b24e48554a754Theodore Ts'o ctx->flags |= E2F_FLAG_JOURNAL_INODE; /* FIXME: todo */ 4063b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o e2fsck_clear_recover(ctx, 1); 4073b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return 0; 4083b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } 4093b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return EXT2_ET_BAD_INODE_NUM; 4103b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } else if (recover) { 4113b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (fix_problem(ctx, PR_0_JOURNAL_RECOVER_SET, pctx)) { 4123b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o e2fsck_clear_recover(ctx, 1); 4133b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return 0; 4143b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } 4153b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return EXT2_ET_UNSUPP_FEATURE; 4163b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } 4173b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return 0; 4183b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o} 4193b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 42062e3e7fe4f32c2186e848f37b7f977835975413eTheodore Ts'o#define V1_SB_SIZE 0x0024 42162e3e7fe4f32c2186e848f37b7f977835975413eTheodore Ts'ostatic void clear_v2_journal_fields(journal_t *journal) 42262e3e7fe4f32c2186e848f37b7f977835975413eTheodore Ts'o{ 4238cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o e2fsck_t ctx = journal->j_dev->k_ctx; 42462e3e7fe4f32c2186e848f37b7f977835975413eTheodore Ts'o struct problem_context pctx; 42562e3e7fe4f32c2186e848f37b7f977835975413eTheodore Ts'o 42662e3e7fe4f32c2186e848f37b7f977835975413eTheodore Ts'o clear_problem_context(&pctx); 42762e3e7fe4f32c2186e848f37b7f977835975413eTheodore Ts'o 42862e3e7fe4f32c2186e848f37b7f977835975413eTheodore Ts'o if (!fix_problem(ctx, PR_0_CLEAR_V2_JOURNAL, &pctx)) 42962e3e7fe4f32c2186e848f37b7f977835975413eTheodore Ts'o return; 43062e3e7fe4f32c2186e848f37b7f977835975413eTheodore Ts'o 43162e3e7fe4f32c2186e848f37b7f977835975413eTheodore Ts'o memset(((char *) journal->j_superblock) + V1_SB_SIZE, 0, 43262e3e7fe4f32c2186e848f37b7f977835975413eTheodore Ts'o ctx->fs->blocksize-V1_SB_SIZE); 4338cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o mark_buffer_dirty(journal->j_sb_buffer); 43462e3e7fe4f32c2186e848f37b7f977835975413eTheodore Ts'o} 43562e3e7fe4f32c2186e848f37b7f977835975413eTheodore Ts'o 43662e3e7fe4f32c2186e848f37b7f977835975413eTheodore Ts'o 4376a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'ostatic errcode_t e2fsck_journal_load(journal_t *journal) 4383b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o{ 4398cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o e2fsck_t ctx = journal->j_dev->k_ctx; 4403b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o journal_superblock_t *jsb; 4413b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o struct buffer_head *jbh = journal->j_sb_buffer; 4423b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o struct problem_context pctx; 4433b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 4443b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o clear_problem_context(&pctx); 4453b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 4460e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o ll_rw_block(READ, 1, &jbh); 4473b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (jbh->b_err) { 4483b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o com_err(ctx->device_name, jbh->b_err, 4493b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o _("reading journal superblock\n")); 4503b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return jbh->b_err; 4513b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } 4523b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 4533b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o jsb = journal->j_superblock; 4543b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o /* If we don't even have JFS_MAGIC, we probably have a wrong inode */ 4553b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (jsb->s_header.h_magic != htonl(JFS_MAGIC_NUMBER)) 4563b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return e2fsck_journal_fix_bad_inode(ctx, &pctx); 4573b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 4580e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o switch (ntohl(jsb->s_header.h_blocktype)) { 4590e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o case JFS_SUPERBLOCK_V1: 4600e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o journal->j_format_version = 1; 46162e3e7fe4f32c2186e848f37b7f977835975413eTheodore Ts'o if (jsb->s_feature_compat || 46262e3e7fe4f32c2186e848f37b7f977835975413eTheodore Ts'o jsb->s_feature_incompat || 46362e3e7fe4f32c2186e848f37b7f977835975413eTheodore Ts'o jsb->s_feature_ro_compat || 46462e3e7fe4f32c2186e848f37b7f977835975413eTheodore Ts'o jsb->s_nr_users) 46562e3e7fe4f32c2186e848f37b7f977835975413eTheodore Ts'o clear_v2_journal_fields(journal); 4660e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o break; 4670e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o 4680e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o case JFS_SUPERBLOCK_V2: 4690e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o journal->j_format_version = 2; 470b3b3d465b1e833af355a41c1c470d8fa3592bc26Gabriel Paubert if (ntohl(jsb->s_nr_users) > 1 && 471a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o uuid_is_null(ctx->fs->super->s_journal_uuid)) 47262e3e7fe4f32c2186e848f37b7f977835975413eTheodore Ts'o clear_v2_journal_fields(journal); 473adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o if (ntohl(jsb->s_nr_users) > 1) { 474adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o fix_problem(ctx, PR_0_JOURNAL_UNSUPP_MULTIFS, &pctx); 475adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o return EXT2_ET_JOURNAL_UNSUPP_VERSION; 476adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o } 4770e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o break; 478c7f23364fd6d8d25d74e51ba5f342fc2230048d8Theodore Ts'o 479c7f23364fd6d8d25d74e51ba5f342fc2230048d8Theodore Ts'o /* 480c7f23364fd6d8d25d74e51ba5f342fc2230048d8Theodore Ts'o * These should never appear in a journal super block, so if 481c7f23364fd6d8d25d74e51ba5f342fc2230048d8Theodore Ts'o * they do, the journal is badly corrupted. 482c7f23364fd6d8d25d74e51ba5f342fc2230048d8Theodore Ts'o */ 483c7f23364fd6d8d25d74e51ba5f342fc2230048d8Theodore Ts'o case JFS_DESCRIPTOR_BLOCK: 484c7f23364fd6d8d25d74e51ba5f342fc2230048d8Theodore Ts'o case JFS_COMMIT_BLOCK: 485c7f23364fd6d8d25d74e51ba5f342fc2230048d8Theodore Ts'o case JFS_REVOKE_BLOCK: 486c7f23364fd6d8d25d74e51ba5f342fc2230048d8Theodore Ts'o return EXT2_ET_CORRUPT_SUPERBLOCK; 4870e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o 4880e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o /* If we don't understand the superblock major type, but there 4890e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o * is a magic number, then it is likely to be a new format we 4900e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o * just don't understand, so leave it alone. */ 4910e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o default: 492c7f23364fd6d8d25d74e51ba5f342fc2230048d8Theodore Ts'o return EXT2_ET_JOURNAL_UNSUPP_VERSION; 4930e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o } 4940e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o 4952f686ace1c8e2f680ffd450d143cdd01a649687aTheodore Ts'o if (JFS_HAS_INCOMPAT_FEATURE(journal, ~JFS_KNOWN_INCOMPAT_FEATURES)) 4962f686ace1c8e2f680ffd450d143cdd01a649687aTheodore Ts'o return EXT2_ET_UNSUPP_FEATURE; 497424cd2beb7c40a3e4cf96b5bf28b24e48554a754Theodore Ts'o 4982f686ace1c8e2f680ffd450d143cdd01a649687aTheodore Ts'o if (JFS_HAS_RO_COMPAT_FEATURE(journal, ~JFS_KNOWN_ROCOMPAT_FEATURES)) 4992f686ace1c8e2f680ffd450d143cdd01a649687aTheodore Ts'o return EXT2_ET_RO_UNSUPP_FEATURE; 5003b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 5010e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o /* We have now checked whether we know enough about the journal 5020e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o * format to be able to proceed safely, so any other checks that 5030e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o * fail we should attempt to recover from. */ 5040e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o if (jsb->s_blocksize != htonl(journal->j_blocksize)) { 5050e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o com_err(ctx->program_name, EXT2_ET_CORRUPT_SUPERBLOCK, 5060e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o _("%s: no valid journal superblock found\n"), 5070e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o ctx->device_name); 5080e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o return EXT2_ET_CORRUPT_SUPERBLOCK; 5093b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } 5103b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 5113b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (ntohl(jsb->s_maxlen) < journal->j_maxlen) 5123b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o journal->j_maxlen = ntohl(jsb->s_maxlen); 5133b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o else if (ntohl(jsb->s_maxlen) > journal->j_maxlen) { 5140e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o com_err(ctx->program_name, EXT2_ET_CORRUPT_SUPERBLOCK, 5150e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o _("%s: journal too short\n"), 5160e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o ctx->device_name); 5173b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return EXT2_ET_CORRUPT_SUPERBLOCK; 5183b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } 5193b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 5203b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o journal->j_tail_sequence = ntohl(jsb->s_sequence); 521ecf1b7767e1772f4c6dba8f02026057ed05397bdTheodore Ts'o journal->j_transaction_sequence = journal->j_tail_sequence; 5223b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o journal->j_tail = ntohl(jsb->s_start); 5233b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o journal->j_first = ntohl(jsb->s_first); 5243b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o journal->j_last = ntohl(jsb->s_maxlen); 5253b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 5263b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return 0; 5273b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o} 5283b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 52953ef44c40a3e425d2c700d8fd77a6b655aa121feTheodore Ts'ostatic void e2fsck_journal_reset_super(e2fsck_t ctx, journal_superblock_t *jsb, 5306a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o journal_t *journal) 5313b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o{ 5320e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o char *p; 533424cd2beb7c40a3e4cf96b5bf28b24e48554a754Theodore Ts'o union { 534424cd2beb7c40a3e4cf96b5bf28b24e48554a754Theodore Ts'o uuid_t uuid; 535424cd2beb7c40a3e4cf96b5bf28b24e48554a754Theodore Ts'o __u32 val[4]; 536424cd2beb7c40a3e4cf96b5bf28b24e48554a754Theodore Ts'o } u; 537424cd2beb7c40a3e4cf96b5bf28b24e48554a754Theodore Ts'o __u32 new_seq = 0; 538424cd2beb7c40a3e4cf96b5bf28b24e48554a754Theodore Ts'o int i; 539424cd2beb7c40a3e4cf96b5bf28b24e48554a754Theodore Ts'o 5400e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o /* Leave a valid existing V1 superblock signature alone. 5410e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o * Anything unrecognisable we overwrite with a new V2 5420e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o * signature. */ 5430e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o 5440e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o if (jsb->s_header.h_magic != htonl(JFS_MAGIC_NUMBER) || 5450e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o jsb->s_header.h_blocktype != htonl(JFS_SUPERBLOCK_V1)) { 5460e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o jsb->s_header.h_magic = htonl(JFS_MAGIC_NUMBER); 5470e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o jsb->s_header.h_blocktype = htonl(JFS_SUPERBLOCK_V2); 5480e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o } 5490e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o 5500e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o /* Zero out everything else beyond the superblock header */ 5510e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o 5520e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o p = ((char *) jsb) + sizeof(journal_header_t); 5530e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o memset (p, 0, ctx->fs->blocksize-sizeof(journal_header_t)); 5540e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o 5553b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o jsb->s_blocksize = htonl(ctx->fs->blocksize); 5560e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o jsb->s_maxlen = htonl(journal->j_maxlen); 5570e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o jsb->s_first = htonl(1); 5580e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o 559424cd2beb7c40a3e4cf96b5bf28b24e48554a754Theodore Ts'o /* Initialize the journal sequence number so that there is "no" 560424cd2beb7c40a3e4cf96b5bf28b24e48554a754Theodore Ts'o * chance we will find old "valid" transactions in the journal. 561424cd2beb7c40a3e4cf96b5bf28b24e48554a754Theodore Ts'o * This avoids the need to zero the whole journal (slow to do, 562424cd2beb7c40a3e4cf96b5bf28b24e48554a754Theodore Ts'o * and risky when we are just recovering the filesystem). 563424cd2beb7c40a3e4cf96b5bf28b24e48554a754Theodore Ts'o */ 564424cd2beb7c40a3e4cf96b5bf28b24e48554a754Theodore Ts'o uuid_generate(u.uuid); 565424cd2beb7c40a3e4cf96b5bf28b24e48554a754Theodore Ts'o for (i = 0; i < 4; i ++) 566424cd2beb7c40a3e4cf96b5bf28b24e48554a754Theodore Ts'o new_seq ^= u.val[i]; 567424cd2beb7c40a3e4cf96b5bf28b24e48554a754Theodore Ts'o jsb->s_sequence = htonl(new_seq); 5680e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o 5698cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o mark_buffer_dirty(journal->j_sb_buffer); 5700e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o ll_rw_block(WRITE, 1, &journal->j_sb_buffer); 5713b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o} 5723b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 5736a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'ostatic errcode_t e2fsck_journal_fix_corrupt_super(e2fsck_t ctx, 5746a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o journal_t *journal, 5756a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o struct problem_context *pctx) 5763b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o{ 5775dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o struct ext2_super_block *sb = ctx->fs->super; 5785dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o int recover = ctx->fs->super->s_feature_incompat & 5795dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o EXT3_FEATURE_INCOMPAT_RECOVER; 5803b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 5815dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o if (sb->s_feature_compat & EXT3_FEATURE_COMPAT_HAS_JOURNAL) { 5823b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (fix_problem(ctx, PR_0_JOURNAL_BAD_SUPER, pctx)) { 583b2f93192a1701855d4f5f05f0087c45e92a35681Theodore Ts'o e2fsck_journal_reset_super(ctx, journal->j_superblock, 584b2f93192a1701855d4f5f05f0087c45e92a35681Theodore Ts'o journal); 5853b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o journal->j_transaction_sequence = 1; 5863b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o e2fsck_clear_recover(ctx, recover); 5873b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return 0; 5883b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } 5893b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return EXT2_ET_CORRUPT_SUPERBLOCK; 5903b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } else if (e2fsck_journal_fix_bad_inode(ctx, pctx)) 5913b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return EXT2_ET_CORRUPT_SUPERBLOCK; 5923b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 5933b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return 0; 5943b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o} 5953b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 5966a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'ostatic void e2fsck_journal_release(e2fsck_t ctx, journal_t *journal, 5976a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o int reset, int drop) 5983b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o{ 5993b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o journal_superblock_t *jsb; 6003b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 6016a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o if (drop) 6026a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o mark_buffer_clean(journal->j_sb_buffer); 6036a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o else if (!(ctx->options & E2F_OPT_READONLY)) { 6043b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o jsb = journal->j_superblock; 6053b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o jsb->s_sequence = htonl(journal->j_transaction_sequence); 6063b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (reset) 6073b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o jsb->s_start = 0; /* this marks the journal as empty */ 6088cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o mark_buffer_dirty(journal->j_sb_buffer); 6093b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } 6103b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o brelse(journal->j_sb_buffer); 6113b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 6126d222f3217b11c9b27f92b4aafe47bfeb59b81faTheodore Ts'o if (ctx->journal_io) { 6136d222f3217b11c9b27f92b4aafe47bfeb59b81faTheodore Ts'o if (ctx->fs && ctx->fs->io != ctx->journal_io) 6146d222f3217b11c9b27f92b4aafe47bfeb59b81faTheodore Ts'o io_channel_close(ctx->journal_io); 6156d222f3217b11c9b27f92b4aafe47bfeb59b81faTheodore Ts'o ctx->journal_io = 0; 6166d222f3217b11c9b27f92b4aafe47bfeb59b81faTheodore Ts'o } 6176d222f3217b11c9b27f92b4aafe47bfeb59b81faTheodore Ts'o 618d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o#ifndef USE_INODE_IO 6193b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (journal->j_inode) 620c4e3d3f374b409500e3dd05c0b0eca6ac98a6b4eTheodore Ts'o ext2fs_free_mem(&journal->j_inode); 621d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o#endif 622d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o if (journal->j_fs_dev) 623c4e3d3f374b409500e3dd05c0b0eca6ac98a6b4eTheodore Ts'o ext2fs_free_mem(&journal->j_fs_dev); 624c4e3d3f374b409500e3dd05c0b0eca6ac98a6b4eTheodore Ts'o ext2fs_free_mem(&journal); 6253b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o} 6263b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 6279b5657591b1db9b82fe433f3f90e496f3df6a851Theodore Ts'o/* 6289b5657591b1db9b82fe433f3f90e496f3df6a851Theodore Ts'o * This function makes sure that the superblock fields regarding the 6299b5657591b1db9b82fe433f3f90e496f3df6a851Theodore Ts'o * journal are consistent. 6309b5657591b1db9b82fe433f3f90e496f3df6a851Theodore Ts'o */ 6313b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'oint e2fsck_check_ext3_journal(e2fsck_t ctx) 6323b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o{ 6335dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o struct ext2_super_block *sb = ctx->fs->super; 6343b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o journal_t *journal; 6355dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o int recover = ctx->fs->super->s_feature_incompat & 6365dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o EXT3_FEATURE_INCOMPAT_RECOVER; 6373b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o struct problem_context pctx; 638d37066a9fa14ff3c0e7f4ea95e07204fce95f41aTheodore Ts'o problem_t problem; 639d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o int reset = 0, force_fsck = 0; 6403b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o int retval; 6413b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 6423b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o /* If we don't have any journal features, don't do anything more */ 6435dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o if (!(sb->s_feature_compat & EXT3_FEATURE_COMPAT_HAS_JOURNAL) && 6445dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o !recover && sb->s_journal_inum == 0 && sb->s_journal_dev == 0 && 6455dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o uuid_is_null(sb->s_journal_uuid)) 6469b5657591b1db9b82fe433f3f90e496f3df6a851Theodore Ts'o return 0; 6473b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 6483b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o clear_problem_context(&pctx); 6495dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o pctx.num = sb->s_journal_inum; 6503b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 6513b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o retval = e2fsck_get_journal(ctx, &journal); 6523b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (retval) { 653f2d5c937034e6c07391549ef6d46b2c8db086c85Theodore Ts'o if ((retval == EXT2_ET_BAD_INODE_NUM) || 654f2d5c937034e6c07391549ef6d46b2c8db086c85Theodore Ts'o (retval == EXT2_ET_JOURNAL_TOO_SMALL) || 655f2d5c937034e6c07391549ef6d46b2c8db086c85Theodore Ts'o (retval == EXT2_ET_NO_JOURNAL)) 6563b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return e2fsck_journal_fix_bad_inode(ctx, &pctx); 6573b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return retval; 6583b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } 6593b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 6603b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o retval = e2fsck_journal_load(journal); 6613b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (retval) { 662c7f23364fd6d8d25d74e51ba5f342fc2230048d8Theodore Ts'o if ((retval == EXT2_ET_CORRUPT_SUPERBLOCK) || 6632f686ace1c8e2f680ffd450d143cdd01a649687aTheodore Ts'o ((retval == EXT2_ET_UNSUPP_FEATURE) && 6642f686ace1c8e2f680ffd450d143cdd01a649687aTheodore Ts'o (!fix_problem(ctx, PR_0_JOURNAL_UNSUPP_INCOMPAT, 6652f686ace1c8e2f680ffd450d143cdd01a649687aTheodore Ts'o &pctx))) || 6662f686ace1c8e2f680ffd450d143cdd01a649687aTheodore Ts'o ((retval == EXT2_ET_RO_UNSUPP_FEATURE) && 6672f686ace1c8e2f680ffd450d143cdd01a649687aTheodore Ts'o (!fix_problem(ctx, PR_0_JOURNAL_UNSUPP_ROCOMPAT, 6682f686ace1c8e2f680ffd450d143cdd01a649687aTheodore Ts'o &pctx))) || 669c7f23364fd6d8d25d74e51ba5f342fc2230048d8Theodore Ts'o ((retval == EXT2_ET_JOURNAL_UNSUPP_VERSION) && 670c7f23364fd6d8d25d74e51ba5f342fc2230048d8Theodore Ts'o (!fix_problem(ctx, PR_0_JOURNAL_UNSUPP_VERSION, &pctx)))) 6716a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o retval = e2fsck_journal_fix_corrupt_super(ctx, journal, 6726a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o &pctx); 6736a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o e2fsck_journal_release(ctx, journal, 0, 1); 6743b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return retval; 6753b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } 6763b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 6773b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o /* 6783b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o * We want to make the flags consistent here. We will not leave with 6793b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o * needs_recovery set but has_journal clear. We can't get in a loop 6803b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o * with -y, -n, or -p, only if a user isn't making up their mind. 6813b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o */ 6823b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'ono_has_journal: 6835dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o if (!(sb->s_feature_compat & EXT3_FEATURE_COMPAT_HAS_JOURNAL)) { 6845dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o recover = sb->s_feature_incompat & EXT3_FEATURE_INCOMPAT_RECOVER; 6853b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o pctx.str = "inode"; 6863b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (fix_problem(ctx, PR_0_JOURNAL_HAS_JOURNAL, &pctx)) { 6873b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (recover && 6883b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o !fix_problem(ctx, PR_0_JOURNAL_RECOVER_SET, &pctx)) 6893b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o goto no_has_journal; 690d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o /* 691d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o * Need a full fsck if we are releasing a 6928c2dc52180373f4e7b12e92669db59b1a52e2153Theodore Ts'o * journal stored on a reserved inode. 693d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o */ 694d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o force_fsck = recover || 695d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o (sb->s_journal_inum < EXT2_FIRST_INODE(sb)); 696d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o /* Clear all of the journal fields */ 6975dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o sb->s_journal_inum = 0; 698d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o sb->s_journal_dev = 0; 699d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o memset(sb->s_journal_uuid, 0, 700d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o sizeof(sb->s_journal_uuid)); 701d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o e2fsck_clear_recover(ctx, force_fsck); 7023b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } else if (!(ctx->options & E2F_OPT_READONLY)) { 7035dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o sb->s_feature_compat |= EXT3_FEATURE_COMPAT_HAS_JOURNAL; 7043b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o ext2fs_mark_super_dirty(ctx->fs); 7053b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } 7063b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } 7073b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 7085dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o if (sb->s_feature_compat & EXT3_FEATURE_COMPAT_HAS_JOURNAL && 7095dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o !(sb->s_feature_incompat & EXT3_FEATURE_INCOMPAT_RECOVER) && 7103b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o journal->j_superblock->s_start != 0) { 711d37066a9fa14ff3c0e7f4ea95e07204fce95f41aTheodore Ts'o /* Print status information */ 712d37066a9fa14ff3c0e7f4ea95e07204fce95f41aTheodore Ts'o fix_problem(ctx, PR_0_JOURNAL_RECOVERY_CLEAR, &pctx); 713d37066a9fa14ff3c0e7f4ea95e07204fce95f41aTheodore Ts'o if (ctx->superblock) 714d37066a9fa14ff3c0e7f4ea95e07204fce95f41aTheodore Ts'o problem = PR_0_JOURNAL_RUN_DEFAULT; 715d37066a9fa14ff3c0e7f4ea95e07204fce95f41aTheodore Ts'o else 716d37066a9fa14ff3c0e7f4ea95e07204fce95f41aTheodore Ts'o problem = PR_0_JOURNAL_RUN; 717d37066a9fa14ff3c0e7f4ea95e07204fce95f41aTheodore Ts'o if (fix_problem(ctx, problem, &pctx)) { 718d37066a9fa14ff3c0e7f4ea95e07204fce95f41aTheodore Ts'o ctx->options |= E2F_OPT_FORCE; 719d37066a9fa14ff3c0e7f4ea95e07204fce95f41aTheodore Ts'o sb->s_feature_incompat |= 720d37066a9fa14ff3c0e7f4ea95e07204fce95f41aTheodore Ts'o EXT3_FEATURE_INCOMPAT_RECOVER; 721d37066a9fa14ff3c0e7f4ea95e07204fce95f41aTheodore Ts'o ext2fs_mark_super_dirty(ctx->fs); 722d37066a9fa14ff3c0e7f4ea95e07204fce95f41aTheodore Ts'o } else if (fix_problem(ctx, 723d37066a9fa14ff3c0e7f4ea95e07204fce95f41aTheodore Ts'o PR_0_JOURNAL_RESET_JOURNAL, &pctx)) { 7243b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o reset = 1; 725d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o sb->s_state &= ~EXT2_VALID_FS; 726d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o ext2fs_mark_super_dirty(ctx->fs); 727d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o } 728d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o /* 729d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o * If the user answers no to the above question, we 730d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o * ignore the fact that journal apparently has data; 731d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o * accidentally replaying over valid data would be far 732d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o * worse than skipping a questionable recovery. 733d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o * 734d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o * XXX should we abort with a fatal error here? What 735d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o * will the ext3 kernel code do if a filesystem with 736d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o * !NEEDS_RECOVERY but with a non-zero 737d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o * journal->j_superblock->s_start is mounted? 738d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o */ 7393b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } 7403b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 7416a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o e2fsck_journal_release(ctx, journal, reset, 0); 7423b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return retval; 7433b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o} 7443b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 7456a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'ostatic errcode_t recover_ext3_journal(e2fsck_t ctx) 7463b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o{ 7473b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o journal_t *journal; 7483b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o int retval; 7493b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 7508cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o journal_init_revoke_caches(); 7513b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o retval = e2fsck_get_journal(ctx, &journal); 7523b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (retval) 753ecf1b7767e1772f4c6dba8f02026057ed05397bdTheodore Ts'o return retval; 754ecf1b7767e1772f4c6dba8f02026057ed05397bdTheodore Ts'o 7553b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o retval = e2fsck_journal_load(journal); 7563b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (retval) 7576a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o goto errout; 7583b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 7590e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o retval = journal_init_revoke(journal, 1024); 7600e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o if (retval) 7616a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o goto errout; 7620e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o 7633b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o retval = -journal_recover(journal); 764c0a083fac3b8f03ae15f5bf30c230c015538051eTheodore Ts'o if (retval) 765c0a083fac3b8f03ae15f5bf30c230c015538051eTheodore Ts'o goto errout; 766c0a083fac3b8f03ae15f5bf30c230c015538051eTheodore Ts'o 767c0a083fac3b8f03ae15f5bf30c230c015538051eTheodore Ts'o if (journal->j_superblock->s_errno) { 768c0a083fac3b8f03ae15f5bf30c230c015538051eTheodore Ts'o ctx->fs->super->s_state |= EXT2_ERROR_FS; 769c0a083fac3b8f03ae15f5bf30c230c015538051eTheodore Ts'o ext2fs_mark_super_dirty(ctx->fs); 770c0a083fac3b8f03ae15f5bf30c230c015538051eTheodore Ts'o journal->j_superblock->s_errno = 0; 7718cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o mark_buffer_dirty(journal->j_sb_buffer); 772c0a083fac3b8f03ae15f5bf30c230c015538051eTheodore Ts'o } 773c0a083fac3b8f03ae15f5bf30c230c015538051eTheodore Ts'o 7746a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'oerrout: 775d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o journal_destroy_revoke(journal); 7768cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o journal_destroy_revoke_caches(); 7776a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o e2fsck_journal_release(ctx, journal, 1, 0); 7783b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return retval; 7793b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o} 7803b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 78180bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'oint e2fsck_run_ext3_journal(e2fsck_t ctx) 78280bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o{ 78380bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o io_manager io_ptr = ctx->fs->io->manager; 78480bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o int blocksize = ctx->fs->blocksize; 785ecf1b7767e1772f4c6dba8f02026057ed05397bdTheodore Ts'o errcode_t retval, recover_retval; 7868394902e04e64ed10ca81e869892c00143ee4931Theodore Ts'o 7878394902e04e64ed10ca81e869892c00143ee4931Theodore Ts'o printf(_("%s: recovering journal\n"), ctx->device_name); 788ecf1b7767e1772f4c6dba8f02026057ed05397bdTheodore Ts'o if (ctx->options & E2F_OPT_READONLY) { 7898394902e04e64ed10ca81e869892c00143ee4931Theodore Ts'o printf(_("%s: won't do journal recovery while read-only\n"), 790ecf1b7767e1772f4c6dba8f02026057ed05397bdTheodore Ts'o ctx->device_name); 791ecf1b7767e1772f4c6dba8f02026057ed05397bdTheodore Ts'o return EXT2_ET_FILE_RO; 792ecf1b7767e1772f4c6dba8f02026057ed05397bdTheodore Ts'o } 793ecf1b7767e1772f4c6dba8f02026057ed05397bdTheodore Ts'o 7940f2cfe25796bd53b920b1607410bf94251f17fbcTheodore Ts'o if (ctx->fs->flags & EXT2_FLAG_DIRTY) 7953c6b8977d44c66f0a50dd77c18a78b57b1022f8cTheodore Ts'o ext2fs_flush(ctx->fs); /* Force out any modifications */ 796d051521278790e5fc7d97d59bb3be6b662a76365Theodore Ts'o 797ecf1b7767e1772f4c6dba8f02026057ed05397bdTheodore Ts'o recover_retval = recover_ext3_journal(ctx); 79880bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o 79980bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o /* 80080bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o * Reload the filesystem context to get up-to-date data from disk 80180bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o * because journal recovery will change the filesystem under us. 80280bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o */ 80380bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o ext2fs_close(ctx->fs); 804ecf1b7767e1772f4c6dba8f02026057ed05397bdTheodore Ts'o retval = ext2fs_open(ctx->filesystem_name, EXT2_FLAG_RW, 80580bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o ctx->superblock, blocksize, io_ptr, 80680bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o &ctx->fs); 80780bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o 80880bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o if (retval) { 80980bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o com_err(ctx->program_name, retval, 81080bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o _("while trying to re-open %s"), 81180bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o ctx->device_name); 81299a2cc969fb47e8c87965aa9fb93cabf6fe4ac1eTheodore Ts'o fatal_error(ctx, 0); 81380bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o } 81480bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o ctx->fs->priv_data = ctx; 81517390c047f5470eec005c5461a7926d03d6bbbe7Theodore Ts'o 816ecf1b7767e1772f4c6dba8f02026057ed05397bdTheodore Ts'o /* Set the superblock flags */ 817ecf1b7767e1772f4c6dba8f02026057ed05397bdTheodore Ts'o e2fsck_clear_recover(ctx, recover_retval); 818ecf1b7767e1772f4c6dba8f02026057ed05397bdTheodore Ts'o return recover_retval; 81917390c047f5470eec005c5461a7926d03d6bbbe7Theodore Ts'o} 820773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o 821773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o/* 822773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o * This function will move the journal inode from a visible file in 823773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o * the filesystem directory hierarchy to the reserved inode if necessary. 824773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o */ 825546a1ff18cc912003883ff67ba3e87c69f700fc4Theodore Ts'ostatic const char * const journal_names[] = { 826773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o ".journal", "journal", ".journal.dat", "journal.dat", 0 }; 827773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o 828773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'ovoid e2fsck_move_ext3_journal(e2fsck_t ctx) 829773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o{ 830773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o struct ext2_super_block *sb = ctx->fs->super; 831773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o struct problem_context pctx; 832773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o struct ext2_inode inode; 833773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o ext2_filsys fs = ctx->fs; 834773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o ext2_ino_t ino; 835773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o errcode_t retval; 836773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o const char * const * cpp; 837773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o int group, mount_flags; 838773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o 839a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o clear_problem_context(&pctx); 840a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o 841773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o /* 842773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o * If the filesystem is opened read-only, or there is no 843a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o * journal, then do nothing. 844773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o */ 845773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o if ((ctx->options & E2F_OPT_READONLY) || 846773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o (sb->s_journal_inum == 0) || 847773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o !(sb->s_feature_compat & EXT3_FEATURE_COMPAT_HAS_JOURNAL)) 848773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o return; 849773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o 850773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o /* 851a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o * Read in the journal inode 852a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o */ 853a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o if (ext2fs_read_inode(fs, sb->s_journal_inum, &inode) != 0) 854a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o return; 855a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o 856a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o /* 857a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o * If it's necessary to backup the journal inode, do so. 858a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o */ 859a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o if ((sb->s_jnl_backup_type == 0) || 860a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o ((sb->s_jnl_backup_type == EXT3_JNL_BACKUP_BLOCKS) && 861a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o memcmp(inode.i_block, sb->s_jnl_blocks, EXT2_N_BLOCKS*4))) { 862a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o if (fix_problem(ctx, PR_0_BACKUP_JNL, &pctx)) { 863a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o memcpy(sb->s_jnl_blocks, inode.i_block, 864a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o EXT2_N_BLOCKS*4); 865a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o sb->s_jnl_blocks[16] = inode.i_size; 866a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o sb->s_jnl_backup_type = EXT3_JNL_BACKUP_BLOCKS; 867a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o ext2fs_mark_super_dirty(fs); 868a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o } 869a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o } 870a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o 871a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o /* 872a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o * If the journal is already the hidden inode, then do nothing 873a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o */ 874a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o if (sb->s_journal_inum == EXT2_JOURNAL_INO) 875a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o return; 876a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o 877a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o /* 878a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o * The journal inode had better have only one link and not be readable. 879a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o */ 880a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o if (inode.i_links_count != 1) 881a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o return; 882a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o 883a435ec3449694a8fa299337197cc09624960a3a6Theodore Ts'o /* 884773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o * If the filesystem is mounted, or we can't tell whether 885773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o * or not it's mounted, do nothing. 886773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o */ 887773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o retval = ext2fs_check_if_mounted(ctx->filesystem_name, &mount_flags); 888773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o if (retval || (mount_flags & EXT2_MF_MOUNTED)) 889773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o return; 890773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o 891773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o /* 892773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o * If we can't find the name of the journal inode, then do 893773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o * nothing. 894773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o */ 895773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o for (cpp = journal_names; *cpp; cpp++) { 896773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o retval = ext2fs_lookup(fs, EXT2_ROOT_INO, *cpp, 897773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o strlen(*cpp), 0, &ino); 898773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o if ((retval == 0) && (ino == sb->s_journal_inum)) 899773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o break; 900773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o } 901773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o if (*cpp == 0) 902773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o return; 903773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o 904773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o /* We need the inode bitmap to be loaded */ 905773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o retval = ext2fs_read_bitmaps(fs); 906773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o if (retval) 907773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o return; 908773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o 909773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o pctx.str = *cpp; 910773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o if (!fix_problem(ctx, PR_0_MOVE_JOURNAL, &pctx)) 911773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o return; 912773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o 913773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o /* 914773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o * OK, we've done all the checks, let's actually move the 915773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o * journal inode. Errors at this point mean we need to force 916773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o * an ext2 filesystem check. 917773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o */ 918773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o if ((retval = ext2fs_unlink(fs, EXT2_ROOT_INO, *cpp, ino, 0)) != 0) 919773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o goto err_out; 920773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o if ((retval = ext2fs_write_inode(fs, EXT2_JOURNAL_INO, &inode)) != 0) 921773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o goto err_out; 922773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o sb->s_journal_inum = EXT2_JOURNAL_INO; 923773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o ext2fs_mark_super_dirty(fs); 924773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o inode.i_links_count = 0; 925773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o inode.i_dtime = time(0); 926773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o if ((retval = ext2fs_write_inode(fs, ino, &inode)) != 0) 927773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o goto err_out; 928773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o 929773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o group = ext2fs_group_of_ino(fs, ino); 930773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o ext2fs_unmark_inode_bitmap(fs->inode_map, ino); 931773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o ext2fs_mark_ib_dirty(fs); 932773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o fs->group_desc[group].bg_free_inodes_count++; 933773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o fs->super->s_free_inodes_count++; 934773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o return; 935773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o 936773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'oerr_out: 937773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o pctx.errcode = retval; 938773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o fix_problem(ctx, PR_0_ERR_MOVE_JOURNAL, &pctx); 939773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o fs->super->s_state &= ~EXT2_VALID_FS; 940773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o ext2fs_mark_super_dirty(fs); 941773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o return; 942773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o} 943773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o 944