journal.c revision d37066a9fa14ff3c0e7f4ea95e07204fce95f41a
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 33b2f93192a1701855d4f5f05f0087c45e92a35681Theodore Ts'o/* Kernel compatibility functions for handling the journal. These allow us 34b2f93192a1701855d4f5f05f0087c45e92a35681Theodore Ts'o * to use the recovery.c file virtually unchanged from the kernel, so we 35b2f93192a1701855d4f5f05f0087c45e92a35681Theodore Ts'o * don't have to do much to keep kernel and user recovery in sync. 36b2f93192a1701855d4f5f05f0087c45e92a35681Theodore Ts'o */ 378cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'oint journal_bmap(journal_t *journal, blk_t block, unsigned long *phys) 383b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o{ 398cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o struct inode *inode = journal->j_inode; 408cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o errcode_t retval; 418cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o blk_t pblk; 423b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 438cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o if (!inode) { 448cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o *phys = block; 458cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o return 0; 468cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o } 473b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 488cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o retval= ext2fs_bmap(inode->i_ctx->fs, inode->i_ino, 498cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o &inode->i_ext2, NULL, 0, block, &pblk); 508cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o *phys = pblk; 518cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o return (retval); 523b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o} 533b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 548cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'ostruct buffer_head *getblk(kdev_t kdev, blk_t blocknr, int blocksize) 553b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o{ 563b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o struct buffer_head *bh; 573b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 588cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o bh = e2fsck_allocate_memory(kdev->k_ctx, sizeof(*bh), "block buffer"); 593b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (!bh) 603b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return NULL; 613b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 623b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o jfs_debug(4, "getblk for block %lu (%d bytes)(total %d)\n", 6353ef44c40a3e425d2c700d8fd77a6b655aa121feTheodore Ts'o (unsigned long) blocknr, blocksize, ++bh_count); 643b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 658cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o bh->b_ctx = kdev->k_ctx; 668cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o if (kdev->k_dev == K_DEV_FS) 678cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o bh->b_io = kdev->k_ctx->fs->io; 688cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o else 698cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o bh->b_io = kdev->k_ctx->journal_io; 703b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o bh->b_size = blocksize; 713b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o bh->b_blocknr = blocknr; 723b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 733b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return bh; 743b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o} 753b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 760e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'ovoid ll_rw_block(int rw, int nr, struct buffer_head *bhp[]) 773b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o{ 783b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o int retval; 790e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o struct buffer_head *bh; 803b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 810e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o for (; nr > 0; --nr) { 820e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o bh = *bhp++; 830e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o if (rw == READ && !bh->b_uptodate) { 840e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o jfs_debug(3, "reading block %lu/%p\n", 8553ef44c40a3e425d2c700d8fd77a6b655aa121feTheodore Ts'o (unsigned long) bh->b_blocknr, (void *) bh); 868cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o retval = io_channel_read_blk(bh->b_io, 870e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o bh->b_blocknr, 880e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o 1, bh->b_data); 890e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o if (retval) { 900e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o com_err(bh->b_ctx->device_name, retval, 910e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o "while reading block %ld\n", 920e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o bh->b_blocknr); 930e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o bh->b_err = retval; 940e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o continue; 950e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o } 960e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o bh->b_uptodate = 1; 970e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o } else if (rw == WRITE && bh->b_dirty) { 980e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o jfs_debug(3, "writing block %lu/%p\n", 9953ef44c40a3e425d2c700d8fd77a6b655aa121feTheodore Ts'o (unsigned long) bh->b_blocknr, (void *) bh); 1008cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o retval = io_channel_write_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 writing 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_dirty = 0; 1110e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o bh->b_uptodate = 1; 1120e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o } else 1130e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o jfs_debug(3, "no-op %s for block %lu\n", 1140e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o rw == READ ? "read" : "write", 11553ef44c40a3e425d2c700d8fd77a6b655aa121feTheodore Ts'o (unsigned long) bh->b_blocknr); 1160e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o } 1173b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o} 1183b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 1198cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'ovoid mark_buffer_dirty(struct buffer_head *bh) 1203b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o{ 1218cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o bh->b_dirty = 1; 1223b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o} 1233b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 1246a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'ostatic void mark_buffer_clean(struct buffer_head * bh) 1256a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o{ 1266a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o bh->b_dirty = 0; 1276a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o} 1286a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o 1293b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'ovoid brelse(struct buffer_head *bh) 1303b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o{ 1313b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (bh->b_dirty) 1320e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o ll_rw_block(WRITE, 1, &bh); 1333b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o jfs_debug(3, "freeing block %lu/%p (total %d)\n", 13453ef44c40a3e425d2c700d8fd77a6b655aa121feTheodore Ts'o (unsigned long) bh->b_blocknr, (void *) bh, --bh_count); 1353b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o ext2fs_free_mem((void **) &bh); 1363b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o} 1373b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 1383b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'oint buffer_uptodate(struct buffer_head *bh) 1393b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o{ 1403b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return bh->b_uptodate; 1413b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o} 1423b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 14315986f7931e1fe65621b4defb5522c9bf8da76efTheodore Ts'ovoid mark_buffer_uptodate(struct buffer_head *bh, int val) 14415986f7931e1fe65621b4defb5522c9bf8da76efTheodore Ts'o{ 14515986f7931e1fe65621b4defb5522c9bf8da76efTheodore Ts'o bh->b_uptodate = val; 14615986f7931e1fe65621b4defb5522c9bf8da76efTheodore Ts'o} 14715986f7931e1fe65621b4defb5522c9bf8da76efTheodore Ts'o 1483b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'ovoid wait_on_buffer(struct buffer_head *bh) 1493b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o{ 1503b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (!bh->b_uptodate) 1510e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o ll_rw_block(READ, 1, &bh); 1523b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o} 1533b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 15480bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o 1553b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'ostatic void e2fsck_clear_recover(e2fsck_t ctx, int error) 1563b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o{ 1575dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o ctx->fs->super->s_feature_incompat &= ~EXT3_FEATURE_INCOMPAT_RECOVER; 1583b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 1593b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o /* if we had an error doing journal recovery, we need a full fsck */ 1603b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (error) 1615dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o ctx->fs->super->s_state &= ~EXT2_VALID_FS; 1623b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o ext2fs_mark_super_dirty(ctx->fs); 1633b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o} 1643b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 1656a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'ostatic errcode_t e2fsck_journal_init_inode(e2fsck_t ctx, 1666a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o struct ext2_super_block *s, 1676a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o journal_t **journal) 1683b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o{ 1698cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o struct inode *inode = NULL; 1703b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o struct buffer_head *bh; 1718cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o unsigned long start; 1723b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o int retval; 1738cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o struct kdev_s *dev_fs = NULL, *dev_journal; 1743b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 175adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o jfs_debug(1, "Using journal inode %u\n", s->s_journal_inum); 1763b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o *journal = e2fsck_allocate_memory(ctx, sizeof(journal_t), "journal"); 1773b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (!*journal) { 1783b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return EXT2_ET_NO_MEMORY; 1793b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } 1803b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 1818cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o dev_fs = e2fsck_allocate_memory(ctx, 2*sizeof(struct kdev_s), "kdev"); 1828cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o if (!dev_fs) { 1838cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o retval = EXT2_ET_NO_MEMORY; 1848cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o goto errout; 1858cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o } 1868cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o dev_journal = dev_fs+1; 1878cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o 1883b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o inode = e2fsck_allocate_memory(ctx, sizeof(*inode), "journal inode"); 1893b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (!inode) { 1903b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o retval = EXT2_ET_NO_MEMORY; 1918cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o goto errout; 1923b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } 1933b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 1943b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o inode->i_ctx = ctx; 195adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o inode->i_ino = s->s_journal_inum; 196adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o retval = ext2fs_read_inode(ctx->fs, s->s_journal_inum, &inode->i_ext2); 1973b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (retval) 1988cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o goto errout; 1993b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 2008cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o dev_fs->k_ctx = dev_journal->k_ctx = ctx; 2018cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o dev_fs->k_dev = K_DEV_FS; 2028cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o dev_journal->k_dev = K_DEV_JOURNAL; 2038cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o 2048cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o (*journal)->j_dev = dev_journal; 2058cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o (*journal)->j_fs_dev = dev_fs; 2063b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o (*journal)->j_inode = inode; 2073b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o (*journal)->j_blocksize = ctx->fs->blocksize; 2083b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o (*journal)->j_maxlen = inode->i_ext2.i_size / (*journal)->j_blocksize; 209adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o ctx->journal_io = ctx->fs->io; 2103b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 2113b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (!inode->i_ext2.i_links_count || 2123b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o !LINUX_S_ISREG(inode->i_ext2.i_mode) || 2133b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o (*journal)->j_maxlen < JFS_MIN_JOURNAL_BLOCKS || 2148cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o (retval = journal_bmap(*journal, 0, &start)) != 0) { 2158cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o goto errout; 2163b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } 2173b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 2188cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o bh = getblk(dev_journal, start, (*journal)->j_blocksize); 2193b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (!bh) { 2203b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o retval = EXT2_ET_NO_MEMORY; 2218cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o goto errout; 2223b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } 2233b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o (*journal)->j_sb_buffer = bh; 2243b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o (*journal)->j_superblock = (journal_superblock_t *)bh->b_data; 225adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o 2263b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return 0; 2273b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 2288cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'oerrout: 2298cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o if (dev_fs) 2308cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o ext2fs_free_mem((void **)&dev_fs); 2318cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o if (inode) 2328cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o ext2fs_free_mem((void **)&inode); 2338cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o if (journal) 2348cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o ext2fs_free_mem((void **)journal); 2353b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return retval; 2363b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o} 2373b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 238adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'ostatic errcode_t e2fsck_journal_init_dev(e2fsck_t ctx, 239adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o struct ext2_super_block *s, 240adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o journal_t **journal) 2413b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o{ 242adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o struct buffer_head *bh; 243adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o io_manager io_ptr; 244adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o blk_t start; 245adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o int retval; 246adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o int blocksize = ctx->fs->blocksize; 247adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o struct ext2_super_block jsuper; 2483b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o struct problem_context pctx; 2496d222f3217b11c9b27f92b4aafe47bfeb59b81faTheodore Ts'o const char *journal_name; 2508cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o struct kdev_s *dev_fs = NULL, *dev_journal; 2513b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 2528cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o dev_fs = e2fsck_allocate_memory(ctx, 2*sizeof(struct kdev_s), "kdev"); 2538cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o if (!dev_fs) { 2548cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o return EXT2_ET_NO_MEMORY; 2558cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o } 2568cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o dev_journal = dev_fs+1; 2578cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o dev_fs->k_ctx = dev_journal->k_ctx = ctx; 2588cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o dev_fs->k_dev = K_DEV_FS; 2598cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o dev_journal->k_dev = K_DEV_JOURNAL; 2608cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o 2613b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o clear_problem_context(&pctx); 2626d222f3217b11c9b27f92b4aafe47bfeb59b81faTheodore Ts'o journal_name = ctx->journal_name; 2636d222f3217b11c9b27f92b4aafe47bfeb59b81faTheodore Ts'o if (!journal_name) 2646d222f3217b11c9b27f92b4aafe47bfeb59b81faTheodore Ts'o journal_name = ext2fs_find_block_device(s->s_journal_dev); 2653b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 2666d222f3217b11c9b27f92b4aafe47bfeb59b81faTheodore Ts'o if (!journal_name) { 267adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o fix_problem(ctx, PR_0_CANT_FIND_JOURNAL, &pctx); 268adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o return EXT2_ET_LOAD_EXT_JOURNAL; 2693b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } 2703b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 2716d222f3217b11c9b27f92b4aafe47bfeb59b81faTheodore Ts'o jfs_debug(1, "Using journal file %s\n", journal_name); 272adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o 273adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o#if 1 274adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o io_ptr = unix_io_manager; 275adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o#else 276adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o io_ptr = test_io_manager; 277adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o test_io_backing_manager = unix_io_manager; 278adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o#endif 2796d222f3217b11c9b27f92b4aafe47bfeb59b81faTheodore Ts'o retval = io_ptr->open(journal_name, IO_FLAG_RW, &ctx->journal_io); 2806d222f3217b11c9b27f92b4aafe47bfeb59b81faTheodore Ts'o if (!ctx->journal_name) 2816d222f3217b11c9b27f92b4aafe47bfeb59b81faTheodore Ts'o free((void *) journal_name); 2826d222f3217b11c9b27f92b4aafe47bfeb59b81faTheodore Ts'o if (retval) 283adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o return retval; 284adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o 285adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o io_channel_set_blksize(ctx->journal_io, blocksize); 286adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o start = (blocksize == 1024) ? 1 : 0; 2878cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o bh = getblk(dev_journal, start, blocksize); 288adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o if (!bh) 289adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o return EXT2_ET_NO_MEMORY; 290adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o ll_rw_block(READ, 1, &bh); 291adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o if (bh->b_err) 292adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o return bh->b_err; 293adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o memcpy(&jsuper, start ? bh->b_data : bh->b_data + 1024, 294adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o sizeof(jsuper)); 295adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o brelse(bh); 296adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o#ifdef EXT2FS_ENABLE_SWAPFS 297adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o if (jsuper.s_magic == ext2fs_swab16(EXT2_SUPER_MAGIC)) 298adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o ext2fs_swap_super(&jsuper); 299adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o#endif 300adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o if (jsuper.s_magic != EXT2_SUPER_MAGIC || 301adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o !(jsuper.s_feature_incompat & EXT3_FEATURE_INCOMPAT_JOURNAL_DEV)) { 302adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o fix_problem(ctx, PR_0_EXT_JOURNAL_BAD_SUPER, &pctx); 303adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o return EXT2_ET_LOAD_EXT_JOURNAL; 3043b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } 305adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o /* Make sure the journal UUID is correct */ 306adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o if (memcmp(jsuper.s_uuid, ctx->fs->super->s_journal_uuid, 307adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o sizeof(jsuper.s_uuid))) { 308adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o fix_problem(ctx, PR_0_JOURNAL_BAD_UUID, &pctx); 309adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o return EXT2_ET_LOAD_EXT_JOURNAL; 310adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o } 311adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o 312adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o *journal = e2fsck_allocate_memory(ctx, sizeof(journal_t), "journal"); 313adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o if (!*journal) { 314adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o return EXT2_ET_NO_MEMORY; 3153b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } 3163b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 3178cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o (*journal)->j_dev = dev_journal; 3188cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o (*journal)->j_fs_dev = dev_fs; 319adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o (*journal)->j_inode = NULL; 320adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o (*journal)->j_blocksize = ctx->fs->blocksize; 321adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o (*journal)->j_maxlen = jsuper.s_blocks_count; 322adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o 3238cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o bh = getblk(dev_journal, start+1, (*journal)->j_blocksize); 324adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o if (!bh) { 325adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o retval = EXT2_ET_NO_MEMORY; 326adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o goto errout; 327adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o } 328adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o (*journal)->j_sb_buffer = bh; 329adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o (*journal)->j_superblock = (journal_superblock_t *)bh->b_data; 330adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o 331adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o return 0; 332adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o 333adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'oerrout: 3348cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o ext2fs_free_mem((void **)&dev_fs); 335adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o ext2fs_free_mem((void **)journal); 336adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o return retval; 337adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o} 338adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o 339adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'ostatic errcode_t e2fsck_get_journal(e2fsck_t ctx, journal_t **journal) 340adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o{ 341adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o struct ext2_super_block *sb = ctx->fs->super; 342adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o 343adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o if (uuid_is_null(sb->s_journal_uuid)) { 344adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o if (!sb->s_journal_inum) 345adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o return EXT2_ET_BAD_INODE_NUM; 346adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o return e2fsck_journal_init_inode(ctx, sb, journal); 347adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o } else { 348adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o return e2fsck_journal_init_dev(ctx, sb, journal); 349adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o } 3503b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o} 3513b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 3526a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'ostatic errcode_t e2fsck_journal_fix_bad_inode(e2fsck_t ctx, 3536a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o struct problem_context *pctx) 3543b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o{ 3555dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o struct ext2_super_block *sb = ctx->fs->super; 3565dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o int recover = ctx->fs->super->s_feature_incompat & 3575dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o EXT3_FEATURE_INCOMPAT_RECOVER; 3585dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o int has_journal = ctx->fs->super->s_feature_compat & 3595dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o EXT3_FEATURE_COMPAT_HAS_JOURNAL; 3603b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 3615dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o if (has_journal || sb->s_journal_inum) { 3623b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o /* The journal inode is bogus, remove and force full fsck */ 3637e92dfae9e60947a20a2078b7871b073441dac44Theodore Ts'o pctx->ino = sb->s_journal_inum; 3643b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (fix_problem(ctx, PR_0_JOURNAL_BAD_INODE, pctx)) { 3655dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o if (has_journal && sb->s_journal_inum) 3663b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o printf("*** ext3 journal has been deleted - " 3673b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o "filesystem is now ext2 only ***\n\n"); 3685dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o sb->s_feature_compat &= ~EXT3_FEATURE_COMPAT_HAS_JOURNAL; 3695dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o sb->s_journal_inum = 0; 370424cd2beb7c40a3e4cf96b5bf28b24e48554a754Theodore Ts'o ctx->flags |= E2F_FLAG_JOURNAL_INODE; /* FIXME: todo */ 3713b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o e2fsck_clear_recover(ctx, 1); 3723b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return 0; 3733b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } 3743b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return EXT2_ET_BAD_INODE_NUM; 3753b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } else if (recover) { 3763b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (fix_problem(ctx, PR_0_JOURNAL_RECOVER_SET, pctx)) { 3773b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o e2fsck_clear_recover(ctx, 1); 3783b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return 0; 3793b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } 3803b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return EXT2_ET_UNSUPP_FEATURE; 3813b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } 3823b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return 0; 3833b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o} 3843b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 38562e3e7fe4f32c2186e848f37b7f977835975413eTheodore Ts'o#define V1_SB_SIZE 0x0024 38662e3e7fe4f32c2186e848f37b7f977835975413eTheodore Ts'ostatic void clear_v2_journal_fields(journal_t *journal) 38762e3e7fe4f32c2186e848f37b7f977835975413eTheodore Ts'o{ 3888cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o e2fsck_t ctx = journal->j_dev->k_ctx; 38962e3e7fe4f32c2186e848f37b7f977835975413eTheodore Ts'o struct problem_context pctx; 39062e3e7fe4f32c2186e848f37b7f977835975413eTheodore Ts'o 39162e3e7fe4f32c2186e848f37b7f977835975413eTheodore Ts'o clear_problem_context(&pctx); 39262e3e7fe4f32c2186e848f37b7f977835975413eTheodore Ts'o 39362e3e7fe4f32c2186e848f37b7f977835975413eTheodore Ts'o if (!fix_problem(ctx, PR_0_CLEAR_V2_JOURNAL, &pctx)) 39462e3e7fe4f32c2186e848f37b7f977835975413eTheodore Ts'o return; 39562e3e7fe4f32c2186e848f37b7f977835975413eTheodore Ts'o 39662e3e7fe4f32c2186e848f37b7f977835975413eTheodore Ts'o memset(((char *) journal->j_superblock) + V1_SB_SIZE, 0, 39762e3e7fe4f32c2186e848f37b7f977835975413eTheodore Ts'o ctx->fs->blocksize-V1_SB_SIZE); 3988cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o mark_buffer_dirty(journal->j_sb_buffer); 39962e3e7fe4f32c2186e848f37b7f977835975413eTheodore Ts'o} 40062e3e7fe4f32c2186e848f37b7f977835975413eTheodore Ts'o 40162e3e7fe4f32c2186e848f37b7f977835975413eTheodore Ts'o 4026a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'ostatic errcode_t e2fsck_journal_load(journal_t *journal) 4033b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o{ 4048cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o e2fsck_t ctx = journal->j_dev->k_ctx; 4053b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o journal_superblock_t *jsb; 4063b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o struct buffer_head *jbh = journal->j_sb_buffer; 4073b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o struct problem_context pctx; 4083b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 4093b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o clear_problem_context(&pctx); 4103b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 4110e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o ll_rw_block(READ, 1, &jbh); 4123b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (jbh->b_err) { 4133b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o com_err(ctx->device_name, jbh->b_err, 4143b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o _("reading journal superblock\n")); 4153b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return jbh->b_err; 4163b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } 4173b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 4183b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o jsb = journal->j_superblock; 4193b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o /* If we don't even have JFS_MAGIC, we probably have a wrong inode */ 4203b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (jsb->s_header.h_magic != htonl(JFS_MAGIC_NUMBER)) 4213b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return e2fsck_journal_fix_bad_inode(ctx, &pctx); 4223b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 4230e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o switch (ntohl(jsb->s_header.h_blocktype)) { 4240e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o case JFS_SUPERBLOCK_V1: 4250e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o journal->j_format_version = 1; 42662e3e7fe4f32c2186e848f37b7f977835975413eTheodore Ts'o if (jsb->s_feature_compat || 42762e3e7fe4f32c2186e848f37b7f977835975413eTheodore Ts'o jsb->s_feature_incompat || 42862e3e7fe4f32c2186e848f37b7f977835975413eTheodore Ts'o jsb->s_feature_ro_compat || 42962e3e7fe4f32c2186e848f37b7f977835975413eTheodore Ts'o jsb->s_nr_users) 43062e3e7fe4f32c2186e848f37b7f977835975413eTheodore Ts'o clear_v2_journal_fields(journal); 4310e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o break; 4320e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o 4330e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o case JFS_SUPERBLOCK_V2: 4340e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o journal->j_format_version = 2; 435b3b3d465b1e833af355a41c1c470d8fa3592bc26Gabriel Paubert if (ntohl(jsb->s_nr_users) > 1 && 43662e3e7fe4f32c2186e848f37b7f977835975413eTheodore Ts'o (ctx->fs->io == ctx->journal_io)) 43762e3e7fe4f32c2186e848f37b7f977835975413eTheodore Ts'o clear_v2_journal_fields(journal); 438adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o if (ntohl(jsb->s_nr_users) > 1) { 439adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o fix_problem(ctx, PR_0_JOURNAL_UNSUPP_MULTIFS, &pctx); 440adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o return EXT2_ET_JOURNAL_UNSUPP_VERSION; 441adee8d75db09dc8ecb2a32f59a8c64d3f4c64b0eTheodore Ts'o } 4420e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o break; 443c7f23364fd6d8d25d74e51ba5f342fc2230048d8Theodore Ts'o 444c7f23364fd6d8d25d74e51ba5f342fc2230048d8Theodore Ts'o /* 445c7f23364fd6d8d25d74e51ba5f342fc2230048d8Theodore Ts'o * These should never appear in a journal super block, so if 446c7f23364fd6d8d25d74e51ba5f342fc2230048d8Theodore Ts'o * they do, the journal is badly corrupted. 447c7f23364fd6d8d25d74e51ba5f342fc2230048d8Theodore Ts'o */ 448c7f23364fd6d8d25d74e51ba5f342fc2230048d8Theodore Ts'o case JFS_DESCRIPTOR_BLOCK: 449c7f23364fd6d8d25d74e51ba5f342fc2230048d8Theodore Ts'o case JFS_COMMIT_BLOCK: 450c7f23364fd6d8d25d74e51ba5f342fc2230048d8Theodore Ts'o case JFS_REVOKE_BLOCK: 451c7f23364fd6d8d25d74e51ba5f342fc2230048d8Theodore Ts'o return EXT2_ET_CORRUPT_SUPERBLOCK; 4520e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o 4530e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o /* If we don't understand the superblock major type, but there 4540e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o * is a magic number, then it is likely to be a new format we 4550e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o * just don't understand, so leave it alone. */ 4560e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o default: 457c7f23364fd6d8d25d74e51ba5f342fc2230048d8Theodore Ts'o return EXT2_ET_JOURNAL_UNSUPP_VERSION; 4580e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o } 4590e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o 4602f686ace1c8e2f680ffd450d143cdd01a649687aTheodore Ts'o if (JFS_HAS_INCOMPAT_FEATURE(journal, ~JFS_KNOWN_INCOMPAT_FEATURES)) 4612f686ace1c8e2f680ffd450d143cdd01a649687aTheodore Ts'o return EXT2_ET_UNSUPP_FEATURE; 462424cd2beb7c40a3e4cf96b5bf28b24e48554a754Theodore Ts'o 4632f686ace1c8e2f680ffd450d143cdd01a649687aTheodore Ts'o if (JFS_HAS_RO_COMPAT_FEATURE(journal, ~JFS_KNOWN_ROCOMPAT_FEATURES)) 4642f686ace1c8e2f680ffd450d143cdd01a649687aTheodore Ts'o return EXT2_ET_RO_UNSUPP_FEATURE; 4653b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 4660e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o /* We have now checked whether we know enough about the journal 4670e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o * format to be able to proceed safely, so any other checks that 4680e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o * fail we should attempt to recover from. */ 4690e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o if (jsb->s_blocksize != htonl(journal->j_blocksize)) { 4700e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o com_err(ctx->program_name, EXT2_ET_CORRUPT_SUPERBLOCK, 4710e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o _("%s: no valid journal superblock found\n"), 4720e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o ctx->device_name); 4730e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o return EXT2_ET_CORRUPT_SUPERBLOCK; 4743b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } 4753b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 4763b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (ntohl(jsb->s_maxlen) < journal->j_maxlen) 4773b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o journal->j_maxlen = ntohl(jsb->s_maxlen); 4783b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o else if (ntohl(jsb->s_maxlen) > journal->j_maxlen) { 4790e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o com_err(ctx->program_name, EXT2_ET_CORRUPT_SUPERBLOCK, 4800e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o _("%s: journal too short\n"), 4810e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o ctx->device_name); 4823b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return EXT2_ET_CORRUPT_SUPERBLOCK; 4833b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } 4843b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 4853b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o journal->j_tail_sequence = ntohl(jsb->s_sequence); 486ecf1b7767e1772f4c6dba8f02026057ed05397bdTheodore Ts'o journal->j_transaction_sequence = journal->j_tail_sequence; 4873b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o journal->j_tail = ntohl(jsb->s_start); 4883b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o journal->j_first = ntohl(jsb->s_first); 4893b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o journal->j_last = ntohl(jsb->s_maxlen); 4903b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 4913b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return 0; 4923b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o} 4933b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 49453ef44c40a3e425d2c700d8fd77a6b655aa121feTheodore Ts'ostatic void e2fsck_journal_reset_super(e2fsck_t ctx, journal_superblock_t *jsb, 4956a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o journal_t *journal) 4963b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o{ 4970e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o char *p; 498424cd2beb7c40a3e4cf96b5bf28b24e48554a754Theodore Ts'o union { 499424cd2beb7c40a3e4cf96b5bf28b24e48554a754Theodore Ts'o uuid_t uuid; 500424cd2beb7c40a3e4cf96b5bf28b24e48554a754Theodore Ts'o __u32 val[4]; 501424cd2beb7c40a3e4cf96b5bf28b24e48554a754Theodore Ts'o } u; 502424cd2beb7c40a3e4cf96b5bf28b24e48554a754Theodore Ts'o __u32 new_seq = 0; 503424cd2beb7c40a3e4cf96b5bf28b24e48554a754Theodore Ts'o int i; 504424cd2beb7c40a3e4cf96b5bf28b24e48554a754Theodore Ts'o 5050e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o /* Leave a valid existing V1 superblock signature alone. 5060e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o * Anything unrecognisable we overwrite with a new V2 5070e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o * signature. */ 5080e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o 5090e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o if (jsb->s_header.h_magic != htonl(JFS_MAGIC_NUMBER) || 5100e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o jsb->s_header.h_blocktype != htonl(JFS_SUPERBLOCK_V1)) { 5110e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o jsb->s_header.h_magic = htonl(JFS_MAGIC_NUMBER); 5120e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o jsb->s_header.h_blocktype = htonl(JFS_SUPERBLOCK_V2); 5130e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o } 5140e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o 5150e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o /* Zero out everything else beyond the superblock header */ 5160e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o 5170e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o p = ((char *) jsb) + sizeof(journal_header_t); 5180e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o memset (p, 0, ctx->fs->blocksize-sizeof(journal_header_t)); 5190e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o 5203b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o jsb->s_blocksize = htonl(ctx->fs->blocksize); 5210e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o jsb->s_maxlen = htonl(journal->j_maxlen); 5220e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o jsb->s_first = htonl(1); 5230e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o 524424cd2beb7c40a3e4cf96b5bf28b24e48554a754Theodore Ts'o /* Initialize the journal sequence number so that there is "no" 525424cd2beb7c40a3e4cf96b5bf28b24e48554a754Theodore Ts'o * chance we will find old "valid" transactions in the journal. 526424cd2beb7c40a3e4cf96b5bf28b24e48554a754Theodore Ts'o * This avoids the need to zero the whole journal (slow to do, 527424cd2beb7c40a3e4cf96b5bf28b24e48554a754Theodore Ts'o * and risky when we are just recovering the filesystem). 528424cd2beb7c40a3e4cf96b5bf28b24e48554a754Theodore Ts'o */ 529424cd2beb7c40a3e4cf96b5bf28b24e48554a754Theodore Ts'o uuid_generate(u.uuid); 530424cd2beb7c40a3e4cf96b5bf28b24e48554a754Theodore Ts'o for (i = 0; i < 4; i ++) 531424cd2beb7c40a3e4cf96b5bf28b24e48554a754Theodore Ts'o new_seq ^= u.val[i]; 532424cd2beb7c40a3e4cf96b5bf28b24e48554a754Theodore Ts'o jsb->s_sequence = htonl(new_seq); 5330e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o 5348cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o mark_buffer_dirty(journal->j_sb_buffer); 5350e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o ll_rw_block(WRITE, 1, &journal->j_sb_buffer); 5363b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o} 5373b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 5386a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'ostatic errcode_t e2fsck_journal_fix_corrupt_super(e2fsck_t ctx, 5396a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o journal_t *journal, 5406a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o struct problem_context *pctx) 5413b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o{ 5425dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o struct ext2_super_block *sb = ctx->fs->super; 5435dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o int recover = ctx->fs->super->s_feature_incompat & 5445dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o EXT3_FEATURE_INCOMPAT_RECOVER; 5453b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 5463b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o pctx->num = journal->j_inode->i_ino; 5473b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 5485dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o if (sb->s_feature_compat & EXT3_FEATURE_COMPAT_HAS_JOURNAL) { 5493b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (fix_problem(ctx, PR_0_JOURNAL_BAD_SUPER, pctx)) { 550b2f93192a1701855d4f5f05f0087c45e92a35681Theodore Ts'o e2fsck_journal_reset_super(ctx, journal->j_superblock, 551b2f93192a1701855d4f5f05f0087c45e92a35681Theodore Ts'o journal); 5523b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o journal->j_transaction_sequence = 1; 5533b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o e2fsck_clear_recover(ctx, recover); 5543b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return 0; 5553b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } 5563b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return EXT2_ET_CORRUPT_SUPERBLOCK; 5573b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } else if (e2fsck_journal_fix_bad_inode(ctx, pctx)) 5583b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return EXT2_ET_CORRUPT_SUPERBLOCK; 5593b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 5603b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return 0; 5613b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o} 5623b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 5636a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'ostatic void e2fsck_journal_release(e2fsck_t ctx, journal_t *journal, 5646a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o int reset, int drop) 5653b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o{ 5663b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o journal_superblock_t *jsb; 5673b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 5686a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o if (drop) 5696a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o mark_buffer_clean(journal->j_sb_buffer); 5706a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o else if (!(ctx->options & E2F_OPT_READONLY)) { 5713b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o jsb = journal->j_superblock; 5723b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o jsb->s_sequence = htonl(journal->j_transaction_sequence); 5733b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (reset) 5743b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o jsb->s_start = 0; /* this marks the journal as empty */ 5758cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o mark_buffer_dirty(journal->j_sb_buffer); 5763b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } 5773b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o brelse(journal->j_sb_buffer); 5783b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 5796d222f3217b11c9b27f92b4aafe47bfeb59b81faTheodore Ts'o if (ctx->journal_io) { 5806d222f3217b11c9b27f92b4aafe47bfeb59b81faTheodore Ts'o if (ctx->fs && ctx->fs->io != ctx->journal_io) 5816d222f3217b11c9b27f92b4aafe47bfeb59b81faTheodore Ts'o io_channel_close(ctx->journal_io); 5826d222f3217b11c9b27f92b4aafe47bfeb59b81faTheodore Ts'o ctx->journal_io = 0; 5836d222f3217b11c9b27f92b4aafe47bfeb59b81faTheodore Ts'o } 5846d222f3217b11c9b27f92b4aafe47bfeb59b81faTheodore Ts'o 5853b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (journal->j_inode) 5866a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o ext2fs_free_mem((void **)&journal->j_inode); 5873b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o ext2fs_free_mem((void **)&journal); 5883b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o} 5893b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 5909b5657591b1db9b82fe433f3f90e496f3df6a851Theodore Ts'o/* 5919b5657591b1db9b82fe433f3f90e496f3df6a851Theodore Ts'o * This function makes sure that the superblock fields regarding the 5929b5657591b1db9b82fe433f3f90e496f3df6a851Theodore Ts'o * journal are consistent. 5939b5657591b1db9b82fe433f3f90e496f3df6a851Theodore Ts'o */ 5943b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'oint e2fsck_check_ext3_journal(e2fsck_t ctx) 5953b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o{ 5965dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o struct ext2_super_block *sb = ctx->fs->super; 5973b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o journal_t *journal; 5985dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o int recover = ctx->fs->super->s_feature_incompat & 5995dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o EXT3_FEATURE_INCOMPAT_RECOVER; 6003b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o struct problem_context pctx; 601d37066a9fa14ff3c0e7f4ea95e07204fce95f41aTheodore Ts'o problem_t problem; 602d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o int reset = 0, force_fsck = 0; 6033b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o int retval; 6043b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 6053b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o /* If we don't have any journal features, don't do anything more */ 6065dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o if (!(sb->s_feature_compat & EXT3_FEATURE_COMPAT_HAS_JOURNAL) && 6075dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o !recover && sb->s_journal_inum == 0 && sb->s_journal_dev == 0 && 6085dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o uuid_is_null(sb->s_journal_uuid)) 6099b5657591b1db9b82fe433f3f90e496f3df6a851Theodore Ts'o return 0; 6103b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 6113b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o clear_problem_context(&pctx); 6125dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o pctx.num = sb->s_journal_inum; 6133b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 6143b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o retval = e2fsck_get_journal(ctx, &journal); 6153b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (retval) { 6163b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (retval == EXT2_ET_BAD_INODE_NUM) 6173b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return e2fsck_journal_fix_bad_inode(ctx, &pctx); 6183b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return retval; 6193b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } 6203b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 6213b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o retval = e2fsck_journal_load(journal); 6223b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (retval) { 623c7f23364fd6d8d25d74e51ba5f342fc2230048d8Theodore Ts'o if ((retval == EXT2_ET_CORRUPT_SUPERBLOCK) || 6242f686ace1c8e2f680ffd450d143cdd01a649687aTheodore Ts'o ((retval == EXT2_ET_UNSUPP_FEATURE) && 6252f686ace1c8e2f680ffd450d143cdd01a649687aTheodore Ts'o (!fix_problem(ctx, PR_0_JOURNAL_UNSUPP_INCOMPAT, 6262f686ace1c8e2f680ffd450d143cdd01a649687aTheodore Ts'o &pctx))) || 6272f686ace1c8e2f680ffd450d143cdd01a649687aTheodore Ts'o ((retval == EXT2_ET_RO_UNSUPP_FEATURE) && 6282f686ace1c8e2f680ffd450d143cdd01a649687aTheodore Ts'o (!fix_problem(ctx, PR_0_JOURNAL_UNSUPP_ROCOMPAT, 6292f686ace1c8e2f680ffd450d143cdd01a649687aTheodore Ts'o &pctx))) || 630c7f23364fd6d8d25d74e51ba5f342fc2230048d8Theodore Ts'o ((retval == EXT2_ET_JOURNAL_UNSUPP_VERSION) && 631c7f23364fd6d8d25d74e51ba5f342fc2230048d8Theodore Ts'o (!fix_problem(ctx, PR_0_JOURNAL_UNSUPP_VERSION, &pctx)))) 6326a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o retval = e2fsck_journal_fix_corrupt_super(ctx, journal, 6336a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o &pctx); 6346a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o e2fsck_journal_release(ctx, journal, 0, 1); 6353b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return retval; 6363b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } 6373b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 6383b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o /* 6393b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o * We want to make the flags consistent here. We will not leave with 6403b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o * needs_recovery set but has_journal clear. We can't get in a loop 6413b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o * with -y, -n, or -p, only if a user isn't making up their mind. 6423b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o */ 6433b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'ono_has_journal: 6445dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o if (!(sb->s_feature_compat & EXT3_FEATURE_COMPAT_HAS_JOURNAL)) { 6455dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o recover = sb->s_feature_incompat & EXT3_FEATURE_INCOMPAT_RECOVER; 6463b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o pctx.str = "inode"; 6473b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (fix_problem(ctx, PR_0_JOURNAL_HAS_JOURNAL, &pctx)) { 6483b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (recover && 6493b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o !fix_problem(ctx, PR_0_JOURNAL_RECOVER_SET, &pctx)) 6503b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o goto no_has_journal; 651d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o /* 652d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o * Need a full fsck if we are releasing a 6538c2dc52180373f4e7b12e92669db59b1a52e2153Theodore Ts'o * journal stored on a reserved inode. 654d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o */ 655d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o force_fsck = recover || 656d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o (sb->s_journal_inum < EXT2_FIRST_INODE(sb)); 657d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o /* Clear all of the journal fields */ 6585dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o sb->s_journal_inum = 0; 659d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o sb->s_journal_dev = 0; 660d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o memset(sb->s_journal_uuid, 0, 661d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o sizeof(sb->s_journal_uuid)); 662d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o e2fsck_clear_recover(ctx, force_fsck); 6633b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } else if (!(ctx->options & E2F_OPT_READONLY)) { 6645dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o sb->s_feature_compat |= EXT3_FEATURE_COMPAT_HAS_JOURNAL; 6653b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o ext2fs_mark_super_dirty(ctx->fs); 6663b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } 6673b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } 6683b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 6695dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o if (sb->s_feature_compat & EXT3_FEATURE_COMPAT_HAS_JOURNAL && 6705dd8f963d04fa4099a003cb3b13ffae05ab29210Theodore Ts'o !(sb->s_feature_incompat & EXT3_FEATURE_INCOMPAT_RECOVER) && 6713b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o journal->j_superblock->s_start != 0) { 672d37066a9fa14ff3c0e7f4ea95e07204fce95f41aTheodore Ts'o /* Print status information */ 673d37066a9fa14ff3c0e7f4ea95e07204fce95f41aTheodore Ts'o fix_problem(ctx, PR_0_JOURNAL_RECOVERY_CLEAR, &pctx); 674d37066a9fa14ff3c0e7f4ea95e07204fce95f41aTheodore Ts'o if (ctx->superblock) 675d37066a9fa14ff3c0e7f4ea95e07204fce95f41aTheodore Ts'o problem = PR_0_JOURNAL_RUN_DEFAULT; 676d37066a9fa14ff3c0e7f4ea95e07204fce95f41aTheodore Ts'o else 677d37066a9fa14ff3c0e7f4ea95e07204fce95f41aTheodore Ts'o problem = PR_0_JOURNAL_RUN; 678d37066a9fa14ff3c0e7f4ea95e07204fce95f41aTheodore Ts'o if (fix_problem(ctx, problem, &pctx)) { 679d37066a9fa14ff3c0e7f4ea95e07204fce95f41aTheodore Ts'o ctx->options |= E2F_OPT_FORCE; 680d37066a9fa14ff3c0e7f4ea95e07204fce95f41aTheodore Ts'o sb->s_feature_incompat |= 681d37066a9fa14ff3c0e7f4ea95e07204fce95f41aTheodore Ts'o EXT3_FEATURE_INCOMPAT_RECOVER; 682d37066a9fa14ff3c0e7f4ea95e07204fce95f41aTheodore Ts'o ext2fs_mark_super_dirty(ctx->fs); 683d37066a9fa14ff3c0e7f4ea95e07204fce95f41aTheodore Ts'o } else if (fix_problem(ctx, 684d37066a9fa14ff3c0e7f4ea95e07204fce95f41aTheodore Ts'o PR_0_JOURNAL_RESET_JOURNAL, &pctx)) { 6853b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o reset = 1; 686d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o sb->s_state &= ~EXT2_VALID_FS; 687d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o ext2fs_mark_super_dirty(ctx->fs); 688d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o } 689d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o /* 690d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o * If the user answers no to the above question, we 691d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o * ignore the fact that journal apparently has data; 692d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o * accidentally replaying over valid data would be far 693d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o * worse than skipping a questionable recovery. 694d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o * 695d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o * XXX should we abort with a fatal error here? What 696d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o * will the ext3 kernel code do if a filesystem with 697d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o * !NEEDS_RECOVERY but with a non-zero 698d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o * journal->j_superblock->s_start is mounted? 699d3f35b645154ea65ff7c955c862a796e2f281927Theodore Ts'o */ 7003b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o } 7013b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 7026a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o e2fsck_journal_release(ctx, journal, reset, 0); 7033b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return retval; 7043b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o} 7053b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 7066a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'ostatic errcode_t recover_ext3_journal(e2fsck_t ctx) 7073b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o{ 7083b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o journal_t *journal; 7093b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o int retval; 7103b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 7118cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o journal_init_revoke_caches(); 7123b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o retval = e2fsck_get_journal(ctx, &journal); 7133b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (retval) 714ecf1b7767e1772f4c6dba8f02026057ed05397bdTheodore Ts'o return retval; 715ecf1b7767e1772f4c6dba8f02026057ed05397bdTheodore Ts'o 7163b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o retval = e2fsck_journal_load(journal); 7173b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o if (retval) 7186a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o goto errout; 7193b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 7200e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o retval = journal_init_revoke(journal, 1024); 7210e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o if (retval) 7226a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o goto errout; 7230e8a9560d89dd9cca73037a59efa93e46abdccdaTheodore Ts'o 7243b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o retval = -journal_recover(journal); 725c0a083fac3b8f03ae15f5bf30c230c015538051eTheodore Ts'o if (retval) 726c0a083fac3b8f03ae15f5bf30c230c015538051eTheodore Ts'o goto errout; 727c0a083fac3b8f03ae15f5bf30c230c015538051eTheodore Ts'o 728c0a083fac3b8f03ae15f5bf30c230c015538051eTheodore Ts'o if (journal->j_superblock->s_errno) { 729c0a083fac3b8f03ae15f5bf30c230c015538051eTheodore Ts'o ctx->fs->super->s_state |= EXT2_ERROR_FS; 730c0a083fac3b8f03ae15f5bf30c230c015538051eTheodore Ts'o ext2fs_mark_super_dirty(ctx->fs); 731c0a083fac3b8f03ae15f5bf30c230c015538051eTheodore Ts'o journal->j_superblock->s_errno = 0; 7328cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o mark_buffer_dirty(journal->j_sb_buffer); 733c0a083fac3b8f03ae15f5bf30c230c015538051eTheodore Ts'o } 734c0a083fac3b8f03ae15f5bf30c230c015538051eTheodore Ts'o 7356a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'oerrout: 7368cf93332d180e6929d73cd8c855c3a83d6a6648cTheodore Ts'o journal_destroy_revoke_caches(); 7376a6d3d44d6e90539007b8d32e6cb76f62a4af163Theodore Ts'o e2fsck_journal_release(ctx, journal, 1, 0); 7383b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o return retval; 7393b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o} 7403b5386dca8e0008e13351be5de6323576329aa58Theodore Ts'o 74180bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'oint e2fsck_run_ext3_journal(e2fsck_t ctx) 74280bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o{ 74380bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o io_manager io_ptr = ctx->fs->io->manager; 74480bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o int blocksize = ctx->fs->blocksize; 745ecf1b7767e1772f4c6dba8f02026057ed05397bdTheodore Ts'o errcode_t retval, recover_retval; 7468394902e04e64ed10ca81e869892c00143ee4931Theodore Ts'o 7478394902e04e64ed10ca81e869892c00143ee4931Theodore Ts'o printf(_("%s: recovering journal\n"), ctx->device_name); 748ecf1b7767e1772f4c6dba8f02026057ed05397bdTheodore Ts'o if (ctx->options & E2F_OPT_READONLY) { 7498394902e04e64ed10ca81e869892c00143ee4931Theodore Ts'o printf(_("%s: won't do journal recovery while read-only\n"), 750ecf1b7767e1772f4c6dba8f02026057ed05397bdTheodore Ts'o ctx->device_name); 751ecf1b7767e1772f4c6dba8f02026057ed05397bdTheodore Ts'o return EXT2_ET_FILE_RO; 752ecf1b7767e1772f4c6dba8f02026057ed05397bdTheodore Ts'o } 753ecf1b7767e1772f4c6dba8f02026057ed05397bdTheodore Ts'o 7540f2cfe25796bd53b920b1607410bf94251f17fbcTheodore Ts'o if (ctx->fs->flags & EXT2_FLAG_DIRTY) 7553c6b8977d44c66f0a50dd77c18a78b57b1022f8cTheodore Ts'o ext2fs_flush(ctx->fs); /* Force out any modifications */ 756d051521278790e5fc7d97d59bb3be6b662a76365Theodore Ts'o 757ecf1b7767e1772f4c6dba8f02026057ed05397bdTheodore Ts'o recover_retval = recover_ext3_journal(ctx); 75880bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o 75980bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o /* 76080bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o * Reload the filesystem context to get up-to-date data from disk 76180bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o * because journal recovery will change the filesystem under us. 76280bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o */ 76380bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o ext2fs_close(ctx->fs); 764ecf1b7767e1772f4c6dba8f02026057ed05397bdTheodore Ts'o retval = ext2fs_open(ctx->filesystem_name, EXT2_FLAG_RW, 76580bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o ctx->superblock, blocksize, io_ptr, 76680bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o &ctx->fs); 76780bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o 76880bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o if (retval) { 76980bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o com_err(ctx->program_name, retval, 77080bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o _("while trying to re-open %s"), 77180bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o ctx->device_name); 77299a2cc969fb47e8c87965aa9fb93cabf6fe4ac1eTheodore Ts'o fatal_error(ctx, 0); 77380bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o } 77480bfaa3e40ae6ab00cc3d4d1f4c0eeefce0b1a96Theodore Ts'o ctx->fs->priv_data = ctx; 77517390c047f5470eec005c5461a7926d03d6bbbe7Theodore Ts'o 776ecf1b7767e1772f4c6dba8f02026057ed05397bdTheodore Ts'o /* Set the superblock flags */ 777ecf1b7767e1772f4c6dba8f02026057ed05397bdTheodore Ts'o e2fsck_clear_recover(ctx, recover_retval); 778ecf1b7767e1772f4c6dba8f02026057ed05397bdTheodore Ts'o return recover_retval; 77917390c047f5470eec005c5461a7926d03d6bbbe7Theodore Ts'o} 780773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o 781773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o/* 782773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o * This function will move the journal inode from a visible file in 783773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o * the filesystem directory hierarchy to the reserved inode if necessary. 784773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o */ 785773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'oconst static char * const journal_names[] = { 786773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o ".journal", "journal", ".journal.dat", "journal.dat", 0 }; 787773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o 788773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'ovoid e2fsck_move_ext3_journal(e2fsck_t ctx) 789773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o{ 790773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o struct ext2_super_block *sb = ctx->fs->super; 791773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o struct problem_context pctx; 792773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o struct ext2_inode inode; 793773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o ext2_filsys fs = ctx->fs; 794773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o ext2_ino_t ino; 795773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o errcode_t retval; 796773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o const char * const * cpp; 797773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o int group, mount_flags; 798773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o 799773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o /* 800773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o * If the filesystem is opened read-only, or there is no 801773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o * journal, or the journal is already in the hidden inode, 802773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o * then do nothing. 803773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o */ 804773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o if ((ctx->options & E2F_OPT_READONLY) || 805773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o (sb->s_journal_inum == 0) || 806773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o (sb->s_journal_inum == EXT2_JOURNAL_INO) || 807773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o !(sb->s_feature_compat & EXT3_FEATURE_COMPAT_HAS_JOURNAL)) 808773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o return; 809773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o 810773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o /* 811773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o * If the filesystem is mounted, or we can't tell whether 812773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o * or not it's mounted, do nothing. 813773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o */ 814773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o retval = ext2fs_check_if_mounted(ctx->filesystem_name, &mount_flags); 815773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o if (retval || (mount_flags & EXT2_MF_MOUNTED)) 816773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o return; 817773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o 818773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o /* 819773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o * If we can't find the name of the journal inode, then do 820773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o * nothing. 821773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o */ 822773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o for (cpp = journal_names; *cpp; cpp++) { 823773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o retval = ext2fs_lookup(fs, EXT2_ROOT_INO, *cpp, 824773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o strlen(*cpp), 0, &ino); 825773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o if ((retval == 0) && (ino == sb->s_journal_inum)) 826773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o break; 827773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o } 828773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o if (*cpp == 0) 829773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o return; 830773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o 831773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o /* 832773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o * The inode had better have only one link and not be readable. 833773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o */ 834773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o if (ext2fs_read_inode(fs, ino, &inode) != 0) 835773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o return; 836773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o if (inode.i_links_count != 1) 837773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o return; 838773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o 839773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o /* We need the inode bitmap to be loaded */ 840773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o retval = ext2fs_read_bitmaps(fs); 841773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o if (retval) 842773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o return; 843773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o 844773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o clear_problem_context(&pctx); 845773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o pctx.str = *cpp; 846773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o if (!fix_problem(ctx, PR_0_MOVE_JOURNAL, &pctx)) 847773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o return; 848773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o 849773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o /* 850773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o * OK, we've done all the checks, let's actually move the 851773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o * journal inode. Errors at this point mean we need to force 852773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o * an ext2 filesystem check. 853773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o */ 854773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o if ((retval = ext2fs_unlink(fs, EXT2_ROOT_INO, *cpp, ino, 0)) != 0) 855773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o goto err_out; 856773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o if ((retval = ext2fs_write_inode(fs, EXT2_JOURNAL_INO, &inode)) != 0) 857773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o goto err_out; 858773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o sb->s_journal_inum = EXT2_JOURNAL_INO; 859773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o ext2fs_mark_super_dirty(fs); 860773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o inode.i_links_count = 0; 861773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o inode.i_dtime = time(0); 862773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o if ((retval = ext2fs_write_inode(fs, ino, &inode)) != 0) 863773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o goto err_out; 864773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o 865773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o group = ext2fs_group_of_ino(fs, ino); 866773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o ext2fs_unmark_inode_bitmap(fs->inode_map, ino); 867773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o ext2fs_mark_ib_dirty(fs); 868773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o fs->group_desc[group].bg_free_inodes_count++; 869773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o fs->super->s_free_inodes_count++; 870773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o return; 871773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o 872773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'oerr_out: 873773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o pctx.errcode = retval; 874773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o fix_problem(ctx, PR_0_ERR_MOVE_JOURNAL, &pctx); 875773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o fs->super->s_state &= ~EXT2_VALID_FS; 876773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o ext2fs_mark_super_dirty(fs); 877773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o return; 878773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o} 879773fd8a1d4202af708a37bdc7754134e6fdcfe22Theodore Ts'o 880