journal.c revision 3e69906495d5898849a6154b0311b5d4a84a27ae
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; 30328a5ce4ae7bd30a3a57094531bcb6688207415eTheodore Ts'oint journal_enable_debug = 2; 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 900e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'ovoid ll_rw_block(int rw, int nr, struct buffer_head *bhp[]) 913b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o{ 923b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o int retval; 930e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o struct buffer_head *bh; 943b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 950e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o for (; nr > 0; --nr) { 960e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o bh = *bhp++; 970e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o if (rw == READ && !bh->b_uptodate) { 980e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o jfs_debug(3, "reading block %lu/%p\n", 9953ef44c40a3e425d2c700d8fd77a6b655aa121feTheodore Ts'o (unsigned long) bh->b_blocknr, (void *) bh); 1008cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o retval = io_channel_read_blk(bh->b_io, 1010e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o bh->b_blocknr, 1020e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o 1, bh->b_data); 1030e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o if (retval) { 1040e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o com_err(bh->b_ctx->device_name, retval, 1050e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o "while reading block %ld\n", 1060e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o bh->b_blocknr); 1070e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o bh->b_err = retval; 1080e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o continue; 1090e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o } 1100e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o bh->b_uptodate = 1; 1110e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o } else if (rw == WRITE && bh->b_dirty) { 1120e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o jfs_debug(3, "writing block %lu/%p\n", 11353ef44c40a3e425d2c700d8fd77a6b655aa121feTheodore Ts'o (unsigned long) bh->b_blocknr, (void *) bh); 1148cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o retval = io_channel_write_blk(bh->b_io, 1150e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o bh->b_blocknr, 1160e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o 1, bh->b_data); 1170e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o if (retval) { 1180e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o com_err(bh->b_ctx->device_name, retval, 1190e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o "while writing block %ld\n", 1200e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o bh->b_blocknr); 1210e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o bh->b_err = retval; 1220e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o continue; 1230e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o } 1240e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o bh->b_dirty = 0; 1250e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o bh->b_uptodate = 1; 1260e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o } else 1270e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o jfs_debug(3, "no-op %s for block %lu\n", 1280e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o rw == READ ? "read" : "write", 12953ef44c40a3e425d2c700d8fd77a6b655aa121feTheodore Ts'o (unsigned long) bh->b_blocknr); 1300e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o } 1313b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o} 1323b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 1338cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'ovoid mark_buffer_dirty(struct buffer_head *bh) 1343b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o{ 1358cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o bh->b_dirty = 1; 1363b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o} 1373b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 1386a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'ostatic void mark_buffer_clean(struct buffer_head * bh) 1396a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o{ 1406a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o bh->b_dirty = 0; 1416a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o} 1426a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o 1433b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'ovoid brelse(struct buffer_head *bh) 1443b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o{ 1453b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (bh->b_dirty) 1460e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o ll_rw_block(WRITE, 1, &bh); 1473b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o jfs_debug(3, "freeing block %lu/%p (total %d)\n", 14853ef44c40a3e425d2c700d8fd77a6b655aa121feTheodore Ts'o (unsigned long) bh->b_blocknr, (void *) bh, --bh_count); 1493b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o ext2fs_free_mem((void **) &bh); 1503b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o} 1513b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 1523b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'oint buffer_uptodate(struct buffer_head *bh) 1533b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o{ 1543b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return bh->b_uptodate; 1553b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o} 1563b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 15715986f7931e1fe65621b4defb5522c9bf8da76efTheodore Ts'ovoid mark_buffer_uptodate(struct buffer_head *bh, int val) 15815986f7931e1fe65621b4defb5522c9bf8da76efTheodore Ts'o{ 15915986f7931e1fe65621b4defb5522c9bf8da76efTheodore Ts'o bh->b_uptodate = val; 16015986f7931e1fe65621b4defb5522c9bf8da76efTheodore Ts'o} 16115986f7931e1fe65621b4defb5522c9bf8da76efTheodore Ts'o 1623b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'ovoid wait_on_buffer(struct buffer_head *bh) 1633b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o{ 1643b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (!bh->b_uptodate) 1650e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o ll_rw_block(READ, 1, &bh); 1663b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o} 1673b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 16880bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o 1693b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'ostatic void e2fsck_clear_recover(e2fsck_t ctx, int error) 1703b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o{ 1715dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o ctx->fs->super->s_feature_incompat &= ~EXT3_FEATURE_INCOMPAT_RECOVER; 1723b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 1733b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o /* if we had an error doing journal recovery, we need a full fsck */ 1743b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (error) 1755dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o ctx->fs->super->s_state &= ~EXT2_VALID_FS; 1763b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o ext2fs_mark_super_dirty(ctx->fs); 1773b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o} 1783b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 179d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'ostatic errcode_t e2fsck_get_journal(e2fsck_t ctx, journal_t **ret_journal) 1803b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o{ 181d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o struct ext2_super_block *sb = ctx->fs->super; 182d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o struct ext2_super_block jsuper; 183d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o struct problem_context pctx; 184d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o struct buffer_head *bh; 185d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o struct inode *j_inode = NULL; 186d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o struct kdev_s *dev_fs = NULL, *dev_journal; 1873e69906495d5898849a6154b0311b5d4a84a27aeTheodore Ts'o const char *journal_name = 0; 188d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o journal_t *journal = NULL; 1893e69906495d5898849a6154b0311b5d4a84a27aeTheodore Ts'o errcode_t retval = 0; 1903e69906495d5898849a6154b0311b5d4a84a27aeTheodore Ts'o io_manager io_ptr = 0; 191d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o unsigned long start = 0; 192d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o int free_journal_name = 0; 193d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o int ext_journal = 0; 194d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o 195d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o clear_problem_context(&pctx); 196d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o 197d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o journal = e2fsck_allocate_memory(ctx, sizeof(journal_t), "journal"); 198d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o if (!journal) { 1993b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return EXT2_ET_NO_MEMORY; 2003b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } 2013b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 2028cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o dev_fs = e2fsck_allocate_memory(ctx, 2*sizeof(struct kdev_s), "kdev"); 2038cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o if (!dev_fs) { 2048cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o retval = EXT2_ET_NO_MEMORY; 2058cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o goto errout; 2068cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o } 2078cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o dev_journal = dev_fs+1; 2088cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o 2098cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o dev_fs->k_ctx = dev_journal->k_ctx = ctx; 2108cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o dev_fs->k_dev = K_DEV_FS; 2118cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o dev_journal->k_dev = K_DEV_JOURNAL; 2128cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o 213d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o journal->j_dev = dev_journal; 214d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o journal->j_fs_dev = dev_fs; 215d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o journal->j_inode = NULL; 216d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o journal->j_blocksize = ctx->fs->blocksize; 2173b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 218d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o if (uuid_is_null(sb->s_journal_uuid)) { 219d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o if (!sb->s_journal_inum) 220d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o return EXT2_ET_BAD_INODE_NUM; 221d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o j_inode = e2fsck_allocate_memory(ctx, sizeof(*j_inode), 222d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o "journal inode"); 223d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o if (!j_inode) { 224d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o retval = EXT2_ET_NO_MEMORY; 225d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o goto errout; 226d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o } 2273b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 228d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o j_inode->i_ctx = ctx; 229d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o j_inode->i_ino = sb->s_journal_inum; 230d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o 231d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o if ((retval = ext2fs_read_inode(ctx->fs, 232d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o sb->s_journal_inum, 233d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o &j_inode->i_ext2))) 234d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o goto errout; 235d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o if (!j_inode->i_ext2.i_links_count || 236d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o !LINUX_S_ISREG(j_inode->i_ext2.i_mode)) { 237d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o retval = EXT2_ET_NO_JOURNAL; 238d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o goto errout; 239d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o } 240d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o if (j_inode->i_ext2.i_size / journal->j_blocksize < 241d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o JFS_MIN_JOURNAL_BLOCKS) { 242d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o retval = EXT2_ET_JOURNAL_TOO_SMALL; 243d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o goto errout; 244d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o } 2453b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 246d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o journal->j_maxlen = j_inode->i_ext2.i_size / journal->j_blocksize; 2473b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 248d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o#ifdef USE_INODE_IO 249d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o retval = ext2fs_inode_io_intern(ctx->fs, sb->s_journal_inum, 250d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o &journal_name); 251d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o if (retval) 252d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o goto errout; 2533b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 254d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o io_ptr = inode_io_manager; 255d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o#else 256d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o journal->j_inode = j_inode; 257d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o ctx->journal_io = ctx->fs->io; 258d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o if ((retval = journal_bmap(journal, 0, &start)) != 0) 259d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o goto errout; 260d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o#endif 261d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o } else { 262d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o ext_journal = 1; 263d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o journal_name = ctx->journal_name; 264d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o if (!journal_name) { 265d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o journal_name = ext2fs_find_block_device(sb->s_journal_dev); 266d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o free_journal_name = 1; 267d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o } 268d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o 269d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o if (!journal_name) { 270d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o fix_problem(ctx, PR_0_CANT_FIND_JOURNAL, &pctx); 271d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o return EXT2_ET_LOAD_EXT_JOURNAL; 272d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o } 273d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o 274d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o jfs_debug(1, "Using journal file %s\n", journal_name); 275d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o io_ptr = unix_io_manager; 2763b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } 2773b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 278d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o#if 0 279d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o test_io_backing_manager = io_ptr; 280adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o io_ptr = test_io_manager; 281adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o#endif 282d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o#ifndef USE_INODE_IO 283d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o if (ext_journal) 284d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o#endif 285d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o retval = io_ptr->open(journal_name, IO_FLAG_RW, 286d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o &ctx->journal_io); 287d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o if (free_journal_name) 2886d222f3217b11c9b27f92b4aafe47bfeb59b81faTheodore Ts'o free((void *) journal_name); 2896d222f3217b11c9b27f92b4aafe47bfeb59b81faTheodore Ts'o if (retval) 290d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o goto errout; 291adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o 292d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o io_channel_set_blksize(ctx->journal_io, ctx->fs->blocksize); 293d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o 294d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o if (ext_journal) { 295d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o if (ctx->fs->blocksize == 1024) 296d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o start = 1; 297d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o bh = getblk(dev_journal, start, ctx->fs->blocksize); 298d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o if (!bh) { 299d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o retval = EXT2_ET_NO_MEMORY; 300d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o goto errout; 301d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o } 302d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o ll_rw_block(READ, 1, &bh); 303d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o if ((retval = bh->b_err) != 0) 304d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o goto errout; 305d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o memcpy(&jsuper, start ? bh->b_data : bh->b_data + 1024, 306d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o sizeof(jsuper)); 307d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o brelse(bh); 308adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o#ifdef EXT2FS_ENABLE_SWAPFS 309d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o if (jsuper.s_magic == ext2fs_swab16(EXT2_SUPER_MAGIC)) 310d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o ext2fs_swap_super(&jsuper); 311adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o#endif 312d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o if (jsuper.s_magic != EXT2_SUPER_MAGIC || 313d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o !(jsuper.s_feature_incompat & EXT3_FEATURE_INCOMPAT_JOURNAL_DEV)) { 314d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o fix_problem(ctx, PR_0_EXT_JOURNAL_BAD_SUPER, &pctx); 315d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o retval = EXT2_ET_LOAD_EXT_JOURNAL; 316d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o goto errout; 317d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o } 318d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o /* Make sure the journal UUID is correct */ 319d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o if (memcmp(jsuper.s_uuid, ctx->fs->super->s_journal_uuid, 320d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o sizeof(jsuper.s_uuid))) { 321d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o fix_problem(ctx, PR_0_JOURNAL_BAD_UUID, &pctx); 322d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o retval = EXT2_ET_LOAD_EXT_JOURNAL; 323d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o goto errout; 324d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o } 325adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o 326d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o journal->j_maxlen = jsuper.s_blocks_count; 327d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o start++; 3283b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } 3293b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 330d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o if (!(bh = getblk(dev_journal, start, journal->j_blocksize))) { 331adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o retval = EXT2_ET_NO_MEMORY; 332adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o goto errout; 333adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o } 334adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o 335d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o journal->j_sb_buffer = bh; 336d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o journal->j_superblock = (journal_superblock_t *)bh->b_data; 337d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o 338d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o#ifdef USE_INODE_IO 339d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o if (j_inode) 340d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o ext2fs_free_mem((void **)&j_inode); 341d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o#endif 342d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o 343d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o *ret_journal = journal; 344adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o return 0; 345adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o 346adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'oerrout: 347d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o if (dev_fs) 348d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o ext2fs_free_mem((void **)&dev_fs); 349d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o if (j_inode) 350d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o ext2fs_free_mem((void **)&j_inode); 351d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o if (journal) 352d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o ext2fs_free_mem((void **)&journal); 353adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o return retval; 354d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o 3553b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o} 3563b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 3576a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'ostatic errcode_t e2fsck_journal_fix_bad_inode(e2fsck_t ctx, 3586a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o struct problem_context *pctx) 3593b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o{ 3605dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o struct ext2_super_block *sb = ctx->fs->super; 3615dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o int recover = ctx->fs->super->s_feature_incompat & 3625dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o EXT3_FEATURE_INCOMPAT_RECOVER; 3635dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o int has_journal = ctx->fs->super->s_feature_compat & 3645dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o EXT3_FEATURE_COMPAT_HAS_JOURNAL; 3653b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 3665dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o if (has_journal || sb->s_journal_inum) { 3673b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o /* The journal inode is bogus, remove and force full fsck */ 3687e92dfae9e60947a20a2078b7871b073441dac44Theodore Ts'o pctx->ino = sb->s_journal_inum; 3693b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (fix_problem(ctx, PR_0_JOURNAL_BAD_INODE, pctx)) { 3705dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o if (has_journal && sb->s_journal_inum) 3713b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o printf("*** ext3 journal has been deleted - " 3723b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o "filesystem is now ext2 only ***\n\n"); 3735dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o sb->s_feature_compat &= ~EXT3_FEATURE_COMPAT_HAS_JOURNAL; 3745dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o sb->s_journal_inum = 0; 375424cd2beb7c40a3e4cf96b5bf28b24e48554a754Theodore Ts'o ctx->flags |= E2F_FLAG_JOURNAL_INODE; /* FIXME: todo */ 3763b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o e2fsck_clear_recover(ctx, 1); 3773b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return 0; 3783b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } 3793b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return EXT2_ET_BAD_INODE_NUM; 3803b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } else if (recover) { 3813b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (fix_problem(ctx, PR_0_JOURNAL_RECOVER_SET, pctx)) { 3823b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o e2fsck_clear_recover(ctx, 1); 3833b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return 0; 3843b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } 3853b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return EXT2_ET_UNSUPP_FEATURE; 3863b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } 3873b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return 0; 3883b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o} 3893b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 39062e3e7fe4f32c2186e848f37b7f977835975413eTheodore Ts'o#define V1_SB_SIZE 0x0024 39162e3e7fe4f32c2186e848f37b7f977835975413eTheodore Ts'ostatic void clear_v2_journal_fields(journal_t *journal) 39262e3e7fe4f32c2186e848f37b7f977835975413eTheodore Ts'o{ 3938cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o e2fsck_t ctx = journal->j_dev->k_ctx; 39462e3e7fe4f32c2186e848f37b7f977835975413eTheodore Ts'o struct problem_context pctx; 39562e3e7fe4f32c2186e848f37b7f977835975413eTheodore Ts'o 39662e3e7fe4f32c2186e848f37b7f977835975413eTheodore Ts'o clear_problem_context(&pctx); 39762e3e7fe4f32c2186e848f37b7f977835975413eTheodore Ts'o 39862e3e7fe4f32c2186e848f37b7f977835975413eTheodore Ts'o if (!fix_problem(ctx, PR_0_CLEAR_V2_JOURNAL, &pctx)) 39962e3e7fe4f32c2186e848f37b7f977835975413eTheodore Ts'o return; 40062e3e7fe4f32c2186e848f37b7f977835975413eTheodore Ts'o 40162e3e7fe4f32c2186e848f37b7f977835975413eTheodore Ts'o memset(((char *) journal->j_superblock) + V1_SB_SIZE, 0, 40262e3e7fe4f32c2186e848f37b7f977835975413eTheodore Ts'o ctx->fs->blocksize-V1_SB_SIZE); 4038cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o mark_buffer_dirty(journal->j_sb_buffer); 40462e3e7fe4f32c2186e848f37b7f977835975413eTheodore Ts'o} 40562e3e7fe4f32c2186e848f37b7f977835975413eTheodore Ts'o 40662e3e7fe4f32c2186e848f37b7f977835975413eTheodore Ts'o 4076a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'ostatic errcode_t e2fsck_journal_load(journal_t *journal) 4083b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o{ 4098cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o e2fsck_t ctx = journal->j_dev->k_ctx; 4103b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o journal_superblock_t *jsb; 4113b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o struct buffer_head *jbh = journal->j_sb_buffer; 4123b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o struct problem_context pctx; 4133b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 4143b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o clear_problem_context(&pctx); 4153b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 4160e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o ll_rw_block(READ, 1, &jbh); 4173b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (jbh->b_err) { 4183b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o com_err(ctx->device_name, jbh->b_err, 4193b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o _("reading journal superblock\n")); 4203b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return jbh->b_err; 4213b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } 4223b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 4233b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o jsb = journal->j_superblock; 4243b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o /* If we don't even have JFS_MAGIC, we probably have a wrong inode */ 4253b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (jsb->s_header.h_magic != htonl(JFS_MAGIC_NUMBER)) 4263b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return e2fsck_journal_fix_bad_inode(ctx, &pctx); 4273b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 4280e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o switch (ntohl(jsb->s_header.h_blocktype)) { 4290e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o case JFS_SUPERBLOCK_V1: 4300e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o journal->j_format_version = 1; 43162e3e7fe4f32c2186e848f37b7f977835975413eTheodore Ts'o if (jsb->s_feature_compat || 43262e3e7fe4f32c2186e848f37b7f977835975413eTheodore Ts'o jsb->s_feature_incompat || 43362e3e7fe4f32c2186e848f37b7f977835975413eTheodore Ts'o jsb->s_feature_ro_compat || 43462e3e7fe4f32c2186e848f37b7f977835975413eTheodore Ts'o jsb->s_nr_users) 43562e3e7fe4f32c2186e848f37b7f977835975413eTheodore Ts'o clear_v2_journal_fields(journal); 4360e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o break; 4370e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o 4380e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o case JFS_SUPERBLOCK_V2: 4390e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o journal->j_format_version = 2; 440b3b3d465b1e833af355a41c1c470d8fa3592bc26Gabriel Paubert if (ntohl(jsb->s_nr_users) > 1 && 44162e3e7fe4f32c2186e848f37b7f977835975413eTheodore Ts'o (ctx->fs->io == ctx->journal_io)) 44262e3e7fe4f32c2186e848f37b7f977835975413eTheodore Ts'o clear_v2_journal_fields(journal); 443adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o if (ntohl(jsb->s_nr_users) > 1) { 444adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o fix_problem(ctx, PR_0_JOURNAL_UNSUPP_MULTIFS, &pctx); 445adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o return EXT2_ET_JOURNAL_UNSUPP_VERSION; 446adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o } 4470e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o break; 448c7f23364fd6d8d25d74e51ba5f342fc2230048d8Theodore Ts'o 449c7f23364fd6d8d25d74e51ba5f342fc2230048d8Theodore Ts'o /* 450c7f23364fd6d8d25d74e51ba5f342fc2230048d8Theodore Ts'o * These should never appear in a journal super block, so if 451c7f23364fd6d8d25d74e51ba5f342fc2230048d8Theodore Ts'o * they do, the journal is badly corrupted. 452c7f23364fd6d8d25d74e51ba5f342fc2230048d8Theodore Ts'o */ 453c7f23364fd6d8d25d74e51ba5f342fc2230048d8Theodore Ts'o case JFS_DESCRIPTOR_BLOCK: 454c7f23364fd6d8d25d74e51ba5f342fc2230048d8Theodore Ts'o case JFS_COMMIT_BLOCK: 455c7f23364fd6d8d25d74e51ba5f342fc2230048d8Theodore Ts'o case JFS_REVOKE_BLOCK: 456c7f23364fd6d8d25d74e51ba5f342fc2230048d8Theodore Ts'o return EXT2_ET_CORRUPT_SUPERBLOCK; 4570e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o 4580e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o /* If we don't understand the superblock major type, but there 4590e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o * is a magic number, then it is likely to be a new format we 4600e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o * just don't understand, so leave it alone. */ 4610e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o default: 462c7f23364fd6d8d25d74e51ba5f342fc2230048d8Theodore Ts'o return EXT2_ET_JOURNAL_UNSUPP_VERSION; 4630e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o } 4640e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o 4652f686ace1c8e2f680ffd450d143cdd01a649687aTheodore Ts'o if (JFS_HAS_INCOMPAT_FEATURE(journal, ~JFS_KNOWN_INCOMPAT_FEATURES)) 4662f686ace1c8e2f680ffd450d143cdd01a649687aTheodore Ts'o return EXT2_ET_UNSUPP_FEATURE; 467424cd2beb7c40a3e4cf96b5bf28b24e48554a754Theodore Ts'o 4682f686ace1c8e2f680ffd450d143cdd01a649687aTheodore Ts'o if (JFS_HAS_RO_COMPAT_FEATURE(journal, ~JFS_KNOWN_ROCOMPAT_FEATURES)) 4692f686ace1c8e2f680ffd450d143cdd01a649687aTheodore Ts'o return EXT2_ET_RO_UNSUPP_FEATURE; 4703b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 4710e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o /* We have now checked whether we know enough about the journal 4720e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o * format to be able to proceed safely, so any other checks that 4730e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o * fail we should attempt to recover from. */ 4740e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o if (jsb->s_blocksize != htonl(journal->j_blocksize)) { 4750e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o com_err(ctx->program_name, EXT2_ET_CORRUPT_SUPERBLOCK, 4760e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o _("%s: no valid journal superblock found\n"), 4770e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o ctx->device_name); 4780e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o return EXT2_ET_CORRUPT_SUPERBLOCK; 4793b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } 4803b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 4813b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (ntohl(jsb->s_maxlen) < journal->j_maxlen) 4823b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o journal->j_maxlen = ntohl(jsb->s_maxlen); 4833b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o else if (ntohl(jsb->s_maxlen) > journal->j_maxlen) { 4840e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o com_err(ctx->program_name, EXT2_ET_CORRUPT_SUPERBLOCK, 4850e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o _("%s: journal too short\n"), 4860e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o ctx->device_name); 4873b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return EXT2_ET_CORRUPT_SUPERBLOCK; 4883b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } 4893b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 4903b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o journal->j_tail_sequence = ntohl(jsb->s_sequence); 491ecf1b7767e1772f4c6dba8f02026057ed05397bdTheodore Ts'o journal->j_transaction_sequence = journal->j_tail_sequence; 4923b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o journal->j_tail = ntohl(jsb->s_start); 4933b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o journal->j_first = ntohl(jsb->s_first); 4943b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o journal->j_last = ntohl(jsb->s_maxlen); 4953b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 4963b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return 0; 4973b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o} 4983b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 49953ef44c40a3e425d2c700d8fd77a6b655aa121feTheodore Ts'ostatic void e2fsck_journal_reset_super(e2fsck_t ctx, journal_superblock_t *jsb, 5006a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o journal_t *journal) 5013b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o{ 5020e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o char *p; 503424cd2beb7c40a3e4cf96b5bf28b24e48554a754Theodore Ts'o union { 504424cd2beb7c40a3e4cf96b5bf28b24e48554a754Theodore Ts'o uuid_t uuid; 505424cd2beb7c40a3e4cf96b5bf28b24e48554a754Theodore Ts'o __u32 val[4]; 506424cd2beb7c40a3e4cf96b5bf28b24e48554a754Theodore Ts'o } u; 507424cd2beb7c40a3e4cf96b5bf28b24e48554a754Theodore Ts'o __u32 new_seq = 0; 508424cd2beb7c40a3e4cf96b5bf28b24e48554a754Theodore Ts'o int i; 509424cd2beb7c40a3e4cf96b5bf28b24e48554a754Theodore Ts'o 5100e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o /* Leave a valid existing V1 superblock signature alone. 5110e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o * Anything unrecognisable we overwrite with a new V2 5120e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o * signature. */ 5130e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o 5140e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o if (jsb->s_header.h_magic != htonl(JFS_MAGIC_NUMBER) || 5150e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o jsb->s_header.h_blocktype != htonl(JFS_SUPERBLOCK_V1)) { 5160e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o jsb->s_header.h_magic = htonl(JFS_MAGIC_NUMBER); 5170e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o jsb->s_header.h_blocktype = htonl(JFS_SUPERBLOCK_V2); 5180e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o } 5190e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o 5200e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o /* Zero out everything else beyond the superblock header */ 5210e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o 5220e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o p = ((char *) jsb) + sizeof(journal_header_t); 5230e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o memset (p, 0, ctx->fs->blocksize-sizeof(journal_header_t)); 5240e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o 5253b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o jsb->s_blocksize = htonl(ctx->fs->blocksize); 5260e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o jsb->s_maxlen = htonl(journal->j_maxlen); 5270e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o jsb->s_first = htonl(1); 5280e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o 529424cd2beb7c40a3e4cf96b5bf28b24e48554a754Theodore Ts'o /* Initialize the journal sequence number so that there is "no" 530424cd2beb7c40a3e4cf96b5bf28b24e48554a754Theodore Ts'o * chance we will find old "valid" transactions in the journal. 531424cd2beb7c40a3e4cf96b5bf28b24e48554a754Theodore Ts'o * This avoids the need to zero the whole journal (slow to do, 532424cd2beb7c40a3e4cf96b5bf28b24e48554a754Theodore Ts'o * and risky when we are just recovering the filesystem). 533424cd2beb7c40a3e4cf96b5bf28b24e48554a754Theodore Ts'o */ 534424cd2beb7c40a3e4cf96b5bf28b24e48554a754Theodore Ts'o uuid_generate(u.uuid); 535424cd2beb7c40a3e4cf96b5bf28b24e48554a754Theodore Ts'o for (i = 0; i < 4; i ++) 536424cd2beb7c40a3e4cf96b5bf28b24e48554a754Theodore Ts'o new_seq ^= u.val[i]; 537424cd2beb7c40a3e4cf96b5bf28b24e48554a754Theodore Ts'o jsb->s_sequence = htonl(new_seq); 5380e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o 5398cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o mark_buffer_dirty(journal->j_sb_buffer); 5400e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o ll_rw_block(WRITE, 1, &journal->j_sb_buffer); 5413b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o} 5423b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 5436a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'ostatic errcode_t e2fsck_journal_fix_corrupt_super(e2fsck_t ctx, 5446a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o journal_t *journal, 5456a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o struct problem_context *pctx) 5463b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o{ 5475dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o struct ext2_super_block *sb = ctx->fs->super; 5485dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o int recover = ctx->fs->super->s_feature_incompat & 5495dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o EXT3_FEATURE_INCOMPAT_RECOVER; 5503b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 5515dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o if (sb->s_feature_compat & EXT3_FEATURE_COMPAT_HAS_JOURNAL) { 5523b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (fix_problem(ctx, PR_0_JOURNAL_BAD_SUPER, pctx)) { 553b2f93192a1701855d4f5f05f0087c45e92a35681Theodore Ts'o e2fsck_journal_reset_super(ctx, journal->j_superblock, 554b2f93192a1701855d4f5f05f0087c45e92a35681Theodore Ts'o journal); 5553b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o journal->j_transaction_sequence = 1; 5563b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o e2fsck_clear_recover(ctx, recover); 5573b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return 0; 5583b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } 5593b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return EXT2_ET_CORRUPT_SUPERBLOCK; 5603b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } else if (e2fsck_journal_fix_bad_inode(ctx, pctx)) 5613b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return EXT2_ET_CORRUPT_SUPERBLOCK; 5623b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 5633b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return 0; 5643b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o} 5653b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 5666a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'ostatic void e2fsck_journal_release(e2fsck_t ctx, journal_t *journal, 5676a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o int reset, int drop) 5683b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o{ 5693b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o journal_superblock_t *jsb; 5703b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 5716a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o if (drop) 5726a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o mark_buffer_clean(journal->j_sb_buffer); 5736a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o else if (!(ctx->options & E2F_OPT_READONLY)) { 5743b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o jsb = journal->j_superblock; 5753b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o jsb->s_sequence = htonl(journal->j_transaction_sequence); 5763b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (reset) 5773b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o jsb->s_start = 0; /* this marks the journal as empty */ 5788cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o mark_buffer_dirty(journal->j_sb_buffer); 5793b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } 5803b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o brelse(journal->j_sb_buffer); 5813b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 5826d222f3217b11c9b27f92b4aafe47bfeb59b81faTheodore Ts'o if (ctx->journal_io) { 5836d222f3217b11c9b27f92b4aafe47bfeb59b81faTheodore Ts'o if (ctx->fs && ctx->fs->io != ctx->journal_io) 5846d222f3217b11c9b27f92b4aafe47bfeb59b81faTheodore Ts'o io_channel_close(ctx->journal_io); 5856d222f3217b11c9b27f92b4aafe47bfeb59b81faTheodore Ts'o ctx->journal_io = 0; 5866d222f3217b11c9b27f92b4aafe47bfeb59b81faTheodore Ts'o } 5876d222f3217b11c9b27f92b4aafe47bfeb59b81faTheodore Ts'o 588d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o#ifndef USE_INODE_IO 5893b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (journal->j_inode) 5906a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o ext2fs_free_mem((void **)&journal->j_inode); 591d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o#endif 592d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o if (journal->j_fs_dev) 593d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o ext2fs_free_mem((void **)&journal->j_fs_dev); 5943b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o ext2fs_free_mem((void **)&journal); 5953b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o} 5963b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 5979b5657591b1db9b82fe433f3f90e496f3df6a851Theodore Ts'o/* 5989b5657591b1db9b82fe433f3f90e496f3df6a851Theodore Ts'o * This function makes sure that the superblock fields regarding the 5999b5657591b1db9b82fe433f3f90e496f3df6a851Theodore Ts'o * journal are consistent. 6009b5657591b1db9b82fe433f3f90e496f3df6a851Theodore Ts'o */ 6013b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'oint e2fsck_check_ext3_journal(e2fsck_t ctx) 6023b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o{ 6035dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o struct ext2_super_block *sb = ctx->fs->super; 6043b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o journal_t *journal; 6055dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o int recover = ctx->fs->super->s_feature_incompat & 6065dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o EXT3_FEATURE_INCOMPAT_RECOVER; 6073b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o struct problem_context pctx; 608d37066a9fa14ff3c0e7f4ea95e07204fce95f41aTheodore Ts'o problem_t problem; 609d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o int reset = 0, force_fsck = 0; 6103b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o int retval; 6113b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 6123b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o /* If we don't have any journal features, don't do anything more */ 6135dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o if (!(sb->s_feature_compat & EXT3_FEATURE_COMPAT_HAS_JOURNAL) && 6145dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o !recover && sb->s_journal_inum == 0 && sb->s_journal_dev == 0 && 6155dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o uuid_is_null(sb->s_journal_uuid)) 6169b5657591b1db9b82fe433f3f90e496f3df6a851Theodore Ts'o return 0; 6173b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 6183b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o clear_problem_context(&pctx); 6195dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o pctx.num = sb->s_journal_inum; 6203b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 6213b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o retval = e2fsck_get_journal(ctx, &journal); 6223b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (retval) { 623f2d5c937034e6c07391549ef6d46b2c8db086c85Theodore Ts'o if ((retval == EXT2_ET_BAD_INODE_NUM) || 624f2d5c937034e6c07391549ef6d46b2c8db086c85Theodore Ts'o (retval == EXT2_ET_JOURNAL_TOO_SMALL) || 625f2d5c937034e6c07391549ef6d46b2c8db086c85Theodore Ts'o (retval == EXT2_ET_NO_JOURNAL)) 6263b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return e2fsck_journal_fix_bad_inode(ctx, &pctx); 6273b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return retval; 6283b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } 6293b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 6303b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o retval = e2fsck_journal_load(journal); 6313b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (retval) { 632c7f23364fd6d8d25d74e51ba5f342fc2230048d8Theodore Ts'o if ((retval == EXT2_ET_CORRUPT_SUPERBLOCK) || 6332f686ace1c8e2f680ffd450d143cdd01a649687aTheodore Ts'o ((retval == EXT2_ET_UNSUPP_FEATURE) && 6342f686ace1c8e2f680ffd450d143cdd01a649687aTheodore Ts'o (!fix_problem(ctx, PR_0_JOURNAL_UNSUPP_INCOMPAT, 6352f686ace1c8e2f680ffd450d143cdd01a649687aTheodore Ts'o &pctx))) || 6362f686ace1c8e2f680ffd450d143cdd01a649687aTheodore Ts'o ((retval == EXT2_ET_RO_UNSUPP_FEATURE) && 6372f686ace1c8e2f680ffd450d143cdd01a649687aTheodore Ts'o (!fix_problem(ctx, PR_0_JOURNAL_UNSUPP_ROCOMPAT, 6382f686ace1c8e2f680ffd450d143cdd01a649687aTheodore Ts'o &pctx))) || 639c7f23364fd6d8d25d74e51ba5f342fc2230048d8Theodore Ts'o ((retval == EXT2_ET_JOURNAL_UNSUPP_VERSION) && 640c7f23364fd6d8d25d74e51ba5f342fc2230048d8Theodore Ts'o (!fix_problem(ctx, PR_0_JOURNAL_UNSUPP_VERSION, &pctx)))) 6416a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o retval = e2fsck_journal_fix_corrupt_super(ctx, journal, 6426a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o &pctx); 6436a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o e2fsck_journal_release(ctx, journal, 0, 1); 6443b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return retval; 6453b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } 6463b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 6473b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o /* 6483b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o * We want to make the flags consistent here. We will not leave with 6493b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o * needs_recovery set but has_journal clear. We can't get in a loop 6503b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o * with -y, -n, or -p, only if a user isn't making up their mind. 6513b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o */ 6523b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'ono_has_journal: 6535dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o if (!(sb->s_feature_compat & EXT3_FEATURE_COMPAT_HAS_JOURNAL)) { 6545dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o recover = sb->s_feature_incompat & EXT3_FEATURE_INCOMPAT_RECOVER; 6553b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o pctx.str = "inode"; 6563b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (fix_problem(ctx, PR_0_JOURNAL_HAS_JOURNAL, &pctx)) { 6573b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (recover && 6583b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o !fix_problem(ctx, PR_0_JOURNAL_RECOVER_SET, &pctx)) 6593b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o goto no_has_journal; 660d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o /* 661d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o * Need a full fsck if we are releasing a 6628c2dc52180373f4e7b12e92669db59b1a52e2153Theodore Ts'o * journal stored on a reserved inode. 663d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o */ 664d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o force_fsck = recover || 665d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o (sb->s_journal_inum < EXT2_FIRST_INODE(sb)); 666d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o /* Clear all of the journal fields */ 6675dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o sb->s_journal_inum = 0; 668d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o sb->s_journal_dev = 0; 669d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o memset(sb->s_journal_uuid, 0, 670d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o sizeof(sb->s_journal_uuid)); 671d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o e2fsck_clear_recover(ctx, force_fsck); 6723b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } else if (!(ctx->options & E2F_OPT_READONLY)) { 6735dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o sb->s_feature_compat |= EXT3_FEATURE_COMPAT_HAS_JOURNAL; 6743b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o ext2fs_mark_super_dirty(ctx->fs); 6753b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } 6763b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } 6773b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 6785dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o if (sb->s_feature_compat & EXT3_FEATURE_COMPAT_HAS_JOURNAL && 6795dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o !(sb->s_feature_incompat & EXT3_FEATURE_INCOMPAT_RECOVER) && 6803b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o journal->j_superblock->s_start != 0) { 681d37066a9fa14ff3c0e7f4ea95e07204fce95f41aTheodore Ts'o /* Print status information */ 682d37066a9fa14ff3c0e7f4ea95e07204fce95f41aTheodore Ts'o fix_problem(ctx, PR_0_JOURNAL_RECOVERY_CLEAR, &pctx); 683d37066a9fa14ff3c0e7f4ea95e07204fce95f41aTheodore Ts'o if (ctx->superblock) 684d37066a9fa14ff3c0e7f4ea95e07204fce95f41aTheodore Ts'o problem = PR_0_JOURNAL_RUN_DEFAULT; 685d37066a9fa14ff3c0e7f4ea95e07204fce95f41aTheodore Ts'o else 686d37066a9fa14ff3c0e7f4ea95e07204fce95f41aTheodore Ts'o problem = PR_0_JOURNAL_RUN; 687d37066a9fa14ff3c0e7f4ea95e07204fce95f41aTheodore Ts'o if (fix_problem(ctx, problem, &pctx)) { 688d37066a9fa14ff3c0e7f4ea95e07204fce95f41aTheodore Ts'o ctx->options |= E2F_OPT_FORCE; 689d37066a9fa14ff3c0e7f4ea95e07204fce95f41aTheodore Ts'o sb->s_feature_incompat |= 690d37066a9fa14ff3c0e7f4ea95e07204fce95f41aTheodore Ts'o EXT3_FEATURE_INCOMPAT_RECOVER; 691d37066a9fa14ff3c0e7f4ea95e07204fce95f41aTheodore Ts'o ext2fs_mark_super_dirty(ctx->fs); 692d37066a9fa14ff3c0e7f4ea95e07204fce95f41aTheodore Ts'o } else if (fix_problem(ctx, 693d37066a9fa14ff3c0e7f4ea95e07204fce95f41aTheodore Ts'o PR_0_JOURNAL_RESET_JOURNAL, &pctx)) { 6943b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o reset = 1; 695d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o sb->s_state &= ~EXT2_VALID_FS; 696d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o ext2fs_mark_super_dirty(ctx->fs); 697d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o } 698d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o /* 699d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o * If the user answers no to the above question, we 700d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o * ignore the fact that journal apparently has data; 701d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o * accidentally replaying over valid data would be far 702d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o * worse than skipping a questionable recovery. 703d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o * 704d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o * XXX should we abort with a fatal error here? What 705d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o * will the ext3 kernel code do if a filesystem with 706d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o * !NEEDS_RECOVERY but with a non-zero 707d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o * journal->j_superblock->s_start is mounted? 708d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o */ 7093b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } 7103b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 7116a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o e2fsck_journal_release(ctx, journal, reset, 0); 7123b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return retval; 7133b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o} 7143b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 7156a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'ostatic errcode_t recover_ext3_journal(e2fsck_t ctx) 7163b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o{ 7173b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o journal_t *journal; 7183b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o int retval; 7193b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 7208cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o journal_init_revoke_caches(); 7213b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o retval = e2fsck_get_journal(ctx, &journal); 7223b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (retval) 723ecf1b7767e1772f4c6dba8f02026057ed05397bdTheodore Ts'o return retval; 724ecf1b7767e1772f4c6dba8f02026057ed05397bdTheodore Ts'o 7253b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o retval = e2fsck_journal_load(journal); 7263b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (retval) 7276a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o goto errout; 7283b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 7290e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o retval = journal_init_revoke(journal, 1024); 7300e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o if (retval) 7316a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o goto errout; 7320e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o 7333b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o retval = -journal_recover(journal); 734c0a083fac3b8f03ae15f5bf30c230c015538051eTheodore Ts'o if (retval) 735c0a083fac3b8f03ae15f5bf30c230c015538051eTheodore Ts'o goto errout; 736c0a083fac3b8f03ae15f5bf30c230c015538051eTheodore Ts'o 737c0a083fac3b8f03ae15f5bf30c230c015538051eTheodore Ts'o if (journal->j_superblock->s_errno) { 738c0a083fac3b8f03ae15f5bf30c230c015538051eTheodore Ts'o ctx->fs->super->s_state |= EXT2_ERROR_FS; 739c0a083fac3b8f03ae15f5bf30c230c015538051eTheodore Ts'o ext2fs_mark_super_dirty(ctx->fs); 740c0a083fac3b8f03ae15f5bf30c230c015538051eTheodore Ts'o journal->j_superblock->s_errno = 0; 7418cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o mark_buffer_dirty(journal->j_sb_buffer); 742c0a083fac3b8f03ae15f5bf30c230c015538051eTheodore Ts'o } 743c0a083fac3b8f03ae15f5bf30c230c015538051eTheodore Ts'o 7446a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'oerrout: 745d1a2182a1878b1dc6c0996ed1a6c5b108f6626f9Theodore Ts'o journal_destroy_revoke(journal); 7468cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o journal_destroy_revoke_caches(); 7476a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o e2fsck_journal_release(ctx, journal, 1, 0); 7483b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return retval; 7493b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o} 7503b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 75180bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'oint e2fsck_run_ext3_journal(e2fsck_t ctx) 75280bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o{ 75380bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o io_manager io_ptr = ctx->fs->io->manager; 75480bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o int blocksize = ctx->fs->blocksize; 755ecf1b7767e1772f4c6dba8f02026057ed05397bdTheodore Ts'o errcode_t retval, recover_retval; 7568394902e04e64ed10ca81e869892c00143ee4931Theodore Ts'o 7578394902e04e64ed10ca81e869892c00143ee4931Theodore Ts'o printf(_("%s: recovering journal\n"), ctx->device_name); 758ecf1b7767e1772f4c6dba8f02026057ed05397bdTheodore Ts'o if (ctx->options & E2F_OPT_READONLY) { 7598394902e04e64ed10ca81e869892c00143ee4931Theodore Ts'o printf(_("%s: won't do journal recovery while read-only\n"), 760ecf1b7767e1772f4c6dba8f02026057ed05397bdTheodore Ts'o ctx->device_name); 761ecf1b7767e1772f4c6dba8f02026057ed05397bdTheodore Ts'o return EXT2_ET_FILE_RO; 762ecf1b7767e1772f4c6dba8f02026057ed05397bdTheodore Ts'o } 763ecf1b7767e1772f4c6dba8f02026057ed05397bdTheodore Ts'o 7640f2cfe25796bd53b920b1607410bf94251f17fbcTheodore Ts'o if (ctx->fs->flags & EXT2_FLAG_DIRTY) 7653c6b8977d44c66f0a50dd77c18a78b57b1022f8cTheodore Ts'o ext2fs_flush(ctx->fs); /* Force out any modifications */ 766d051521278790e5fc7d97d59bb3be6b662a76365Theodore Ts'o 767ecf1b7767e1772f4c6dba8f02026057ed05397bdTheodore Ts'o recover_retval = recover_ext3_journal(ctx); 76880bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o 76980bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o /* 77080bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o * Reload the filesystem context to get up-to-date data from disk 77180bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o * because journal recovery will change the filesystem under us. 77280bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o */ 77380bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o ext2fs_close(ctx->fs); 774ecf1b7767e1772f4c6dba8f02026057ed05397bdTheodore Ts'o retval = ext2fs_open(ctx->filesystem_name, EXT2_FLAG_RW, 77580bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o ctx->superblock, blocksize, io_ptr, 77680bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o &ctx->fs); 77780bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o 77880bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o if (retval) { 77980bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o com_err(ctx->program_name, retval, 78080bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o _("while trying to re-open %s"), 78180bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o ctx->device_name); 78299a2cc969fb47e8c87965aa9fb93cabf6fe4ac1eTheodore Ts'o fatal_error(ctx, 0); 78380bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o } 78480bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o ctx->fs->priv_data = ctx; 78517390c047f5470eec005c5461a7926d03d6bbbe7Theodore Ts'o 786ecf1b7767e1772f4c6dba8f02026057ed05397bdTheodore Ts'o /* Set the superblock flags */ 787ecf1b7767e1772f4c6dba8f02026057ed05397bdTheodore Ts'o e2fsck_clear_recover(ctx, recover_retval); 788ecf1b7767e1772f4c6dba8f02026057ed05397bdTheodore Ts'o return recover_retval; 78917390c047f5470eec005c5461a7926d03d6bbbe7Theodore Ts'o} 790773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o 791773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o/* 792773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o * This function will move the journal inode from a visible file in 793773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o * the filesystem directory hierarchy to the reserved inode if necessary. 794773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o */ 795546a1ff18cc912003883ff67ba3e87c69f700fc4Theodore Ts'ostatic const char * const journal_names[] = { 796773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o ".journal", "journal", ".journal.dat", "journal.dat", 0 }; 797773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o 798773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'ovoid e2fsck_move_ext3_journal(e2fsck_t ctx) 799773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o{ 800773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o struct ext2_super_block *sb = ctx->fs->super; 801773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o struct problem_context pctx; 802773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o struct ext2_inode inode; 803773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o ext2_filsys fs = ctx->fs; 804773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o ext2_ino_t ino; 805773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o errcode_t retval; 806773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o const char * const * cpp; 807773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o int group, mount_flags; 808773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o 809773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o /* 810773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o * If the filesystem is opened read-only, or there is no 811773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o * journal, or the journal is already in the hidden inode, 812773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o * then do nothing. 813773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o */ 814773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o if ((ctx->options & E2F_OPT_READONLY) || 815773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o (sb->s_journal_inum == 0) || 816773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o (sb->s_journal_inum == EXT2_JOURNAL_INO) || 817773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o !(sb->s_feature_compat & EXT3_FEATURE_COMPAT_HAS_JOURNAL)) 818773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o return; 819773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o 820773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o /* 821773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o * If the filesystem is mounted, or we can't tell whether 822773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o * or not it's mounted, do nothing. 823773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o */ 824773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o retval = ext2fs_check_if_mounted(ctx->filesystem_name, &mount_flags); 825773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o if (retval || (mount_flags & EXT2_MF_MOUNTED)) 826773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o return; 827773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o 828773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o /* 829773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o * If we can't find the name of the journal inode, then do 830773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o * nothing. 831773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o */ 832773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o for (cpp = journal_names; *cpp; cpp++) { 833773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o retval = ext2fs_lookup(fs, EXT2_ROOT_INO, *cpp, 834773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o strlen(*cpp), 0, &ino); 835773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o if ((retval == 0) && (ino == sb->s_journal_inum)) 836773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o break; 837773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o } 838773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o if (*cpp == 0) 839773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o return; 840773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o 841773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o /* 842773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o * The inode had better have only one link and not be readable. 843773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o */ 844773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o if (ext2fs_read_inode(fs, ino, &inode) != 0) 845773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o return; 846773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o if (inode.i_links_count != 1) 847773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o return; 848773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o 849773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o /* We need the inode bitmap to be loaded */ 850773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o retval = ext2fs_read_bitmaps(fs); 851773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o if (retval) 852773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o return; 853773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o 854773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o clear_problem_context(&pctx); 855773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o pctx.str = *cpp; 856773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o if (!fix_problem(ctx, PR_0_MOVE_JOURNAL, &pctx)) 857773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o return; 858773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o 859773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o /* 860773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o * OK, we've done all the checks, let's actually move the 861773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o * journal inode. Errors at this point mean we need to force 862773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o * an ext2 filesystem check. 863773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o */ 864773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o if ((retval = ext2fs_unlink(fs, EXT2_ROOT_INO, *cpp, ino, 0)) != 0) 865773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o goto err_out; 866773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o if ((retval = ext2fs_write_inode(fs, EXT2_JOURNAL_INO, &inode)) != 0) 867773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o goto err_out; 868773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o sb->s_journal_inum = EXT2_JOURNAL_INO; 869773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o ext2fs_mark_super_dirty(fs); 870773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o inode.i_links_count = 0; 871773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o inode.i_dtime = time(0); 872773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o if ((retval = ext2fs_write_inode(fs, ino, &inode)) != 0) 873773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o goto err_out; 874773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o 875773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o group = ext2fs_group_of_ino(fs, ino); 876773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o ext2fs_unmark_inode_bitmap(fs->inode_map, ino); 877773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o ext2fs_mark_ib_dirty(fs); 878773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o fs->group_desc[group].bg_free_inodes_count++; 879773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o fs->super->s_free_inodes_count++; 880773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o return; 881773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o 882773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'oerr_out: 883773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o pctx.errcode = retval; 884773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o fix_problem(ctx, PR_0_ERR_MOVE_JOURNAL, &pctx); 885773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o fs->super->s_state &= ~EXT2_VALID_FS; 886773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o ext2fs_mark_super_dirty(fs); 887773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o return; 888773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o} 889773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o 890