Author: dgorbachev Date: Sat Jul 25 09:59:18 2009 New Revision: 42194
URL: http://svn.reactos.org/svn/reactos?rev=42194&view=rev Log: Undo part of r42190. Sorry.
Modified: trunk/reactos/boot/freeldr/freeldr/include/fs/ext2.h
Modified: trunk/reactos/boot/freeldr/freeldr/include/fs/ext2.h URL: http://svn.reactos.org/svn/reactos/trunk/reactos/boot/freeldr/freeldr/includ... ============================================================================== --- trunk/reactos/boot/freeldr/freeldr/include/fs/ext2.h [iso-8859-1] (original) +++ trunk/reactos/boot/freeldr/freeldr/include/fs/ext2.h [iso-8859-1] Sat Jul 25 09:59:18 2009 @@ -20,154 +20,613 @@ #ifndef __EXT2_H #define __EXT2_H
-/* - * grub/fs/ext2.c + +/* + * linux/include/linux/ext3_fs.h * - * GRUB -- GRand Unified Bootloader - * Copyright (C) 2003,2004,2005,2007 Free Software Foundation, Inc. + * Copyright (C) 1992, 1993, 1994, 1995 + * Remy Card (card@masi.ibp.fr) + * Laboratoire MASI - Institut Blaise Pascal + * Universite Pierre et Marie Curie (Paris VI) * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. + * from * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. + * linux/include/linux/minix_fs.h * - * You should have received a copy of the GNU General Public License - * along with GRUB. If not, see http://www.gnu.org/licenses/. - */ - -/* Magic value used to identify an ext2 filesystem. */ -#define EXT2_MAGIC 0xEF53 -/* Amount of indirect blocks in an inode. */ -#define INDIRECT_BLOCKS 12 -/* Maximum lenght of a pathname. */ -#define EXT2_PATH_MAX 4096 -/* Maximum nesting of symlinks, used to prevent a loop. */ -#define EXT2_MAX_SYMLINKCNT 8 - -/* The good old revision and the default inode size. */ -#define EXT2_GOOD_OLD_REVISION 0 -#define EXT2_GOOD_OLD_INODE_SIZE 128 - -/* Filetype used in directory entry. */ -#define FILETYPE_UNKNOWN 0 -#define FILETYPE_REG 1 -#define FILETYPE_DIRECTORY 2 -#define FILETYPE_SYMLINK 7 - -/* Filetype information as used in inodes. */ -#define FILETYPE_INO_MASK 0170000 -#define FILETYPE_INO_REG 0100000 -#define FILETYPE_INO_DIRECTORY 0040000 -#define FILETYPE_INO_SYMLINK 0120000 - -/* The ext2 superblock. */ -struct ext2_sblock + * Copyright (C) 1991, 1992 Linus Torvalds + */ + +#ifndef _LINUX_EXT3_FS_H +#define _LINUX_EXT3_FS_H + +//#include <linux/types.h> + +/* + * The second extended filesystem constants/structures + */ + +/* + * Define EXT3FS_DEBUG to produce debug messages + */ +#undef EXT3FS_DEBUG + +/* + * Define EXT3_PREALLOCATE to preallocate data blocks for expanding files + */ +#undef EXT3_PREALLOCATE /* @@@ Fix this! */ +#define EXT3_DEFAULT_PREALLOC_BLOCKS 8 + +/* + * The second extended file system version + */ +#define EXT3FS_DATE "10 Jan 2002" +#define EXT3FS_VERSION "2.4-0.9.17" + +/* + * Debug code + */ +#ifdef EXT3FS_DEBUG +#define ext3_debug(f, a...) \ + do { \ + printk (KERN_DEBUG "EXT3-fs DEBUG (%s, %d): %s:", \ + __FILE__, __LINE__, __FUNCTION__); \ + printk (KERN_DEBUG f, ## a); \ + } while (0) +#else + #ifdef __GNUC__ + #define ext3_debug(f, a...) do {} while (0) + #else + #define ext3_debug + #endif +#endif + +/* + * Special inodes numbers + */ +#define EXT3_BAD_INO 1 /* Bad blocks inode */ +#define EXT3_ROOT_INO 2 /* Root inode */ +#define EXT3_ACL_IDX_INO 3 /* ACL inode */ +#define EXT3_ACL_DATA_INO 4 /* ACL inode */ +#define EXT3_BOOT_LOADER_INO 5 /* Boot loader inode */ +#define EXT3_UNDEL_DIR_INO 6 /* Undelete directory inode */ +#define EXT3_RESIZE_INO 7 /* Reserved group descriptors inode */ +#define EXT3_JOURNAL_INO 8 /* Journal inode */ + +/* First non-reserved inode for old ext3 filesystems */ +#define EXT3_GOOD_OLD_FIRST_INO 11 + +/* + * The second extended file system magic number + */ +#define EXT3_SUPER_MAGIC 0xEF53 + +/* + * Maximal count of links to a file + */ +#define EXT3_LINK_MAX 32000 + +/* + * Macro-instructions used to manage several block sizes + */ +#define EXT3_MIN_BLOCK_SIZE 1024 +#define EXT3_MAX_BLOCK_SIZE 4096 +#define EXT3_MIN_BLOCK_LOG_SIZE 10 +#ifdef __KERNEL__ +# define EXT3_BLOCK_SIZE(s) ((s)->s_blocksize) +#else +# define EXT3_BLOCK_SIZE(s) (EXT3_MIN_BLOCK_SIZE << (s)->s_log_block_size) +#endif +#define EXT3_ACLE_PER_BLOCK(s) (EXT3_BLOCK_SIZE(s) / sizeof (struct ext3_acl_entry)) +#define EXT3_ADDR_PER_BLOCK(s) (EXT3_BLOCK_SIZE(s) / sizeof (ULONG)) +#ifdef __KERNEL__ +# define EXT3_BLOCK_SIZE_BITS(s) ((s)->s_blocksize_bits) +#else +# define EXT3_BLOCK_SIZE_BITS(s) ((s)->s_log_block_size + 10) +#endif +#ifdef __KERNEL__ +#define EXT3_ADDR_PER_BLOCK_BITS(s) ((s)->u.ext3_sb.s_addr_per_block_bits) +#define EXT3_INODE_SIZE(s) ((s)->u.ext3_sb.s_inode_size) +#define EXT3_FIRST_INO(s) ((s)->u.ext3_sb.s_first_ino) +#else +#define EXT3_INODE_SIZE(s) (((s)->s_rev_level == EXT3_GOOD_OLD_REV) ? \ + EXT3_GOOD_OLD_INODE_SIZE : \ + (s)->s_inode_size) +#define EXT3_FIRST_INO(s) (((s)->s_rev_level == EXT3_GOOD_OLD_REV) ? \ + EXT3_GOOD_OLD_FIRST_INO : \ + (s)->s_first_ino) +#endif + +/* + * Macro-instructions used to manage fragments + */ +#define EXT3_MIN_FRAG_SIZE 1024 +#define EXT3_MAX_FRAG_SIZE 4096 +#define EXT3_MIN_FRAG_LOG_SIZE 10 +#ifdef __KERNEL__ +# define EXT3_FRAG_SIZE(s) ((s)->u.ext3_sb.s_frag_size) +# define EXT3_FRAGS_PER_BLOCK(s) ((s)->u.ext3_sb.s_frags_per_block) +#else +# define EXT3_FRAG_SIZE(s) (EXT3_MIN_FRAG_SIZE << (s)->s_log_frag_size) +# define EXT3_FRAGS_PER_BLOCK(s) (EXT3_BLOCK_SIZE(s) / EXT3_FRAG_SIZE(s)) +#endif + +/* + * ACL structures + */ +struct ext3_acl_header /* Header of Access Control Lists */ { - ULONG total_inodes; - ULONG total_blocks; - ULONG reserved_blocks; - ULONG free_blocks; - ULONG free_inodes; - ULONG first_data_block; - ULONG log2_block_size; - ULONG log2_fragment_size; - ULONG blocks_per_group; - ULONG fragments_per_group; - ULONG inodes_per_group; - ULONG mtime; - ULONG utime; - USHORT mnt_count; - USHORT max_mnt_count; - USHORT magic; - USHORT fs_state; - USHORT error_handling; - USHORT minor_revision_level; - ULONG lastcheck; - ULONG checkinterval; - ULONG creator_os; - ULONG revision_level; - USHORT uid_reserved; - USHORT gid_reserved; - ULONG first_inode; - USHORT inode_size; - USHORT block_group_number; - ULONG feature_compatibility; - ULONG feature_incompat; - ULONG feature_ro_compat; - ULONG unique_id[4]; - char volume_name[16]; - char last_mounted_on[64]; - ULONG compression_info; + ULONG aclh_size; + ULONG aclh_file_count; + ULONG aclh_acle_count; + ULONG aclh_first_acle; };
-/* The ext2 blockgroup. */ -struct ext2_block_group +struct ext3_acl_entry /* Access Control List Entry */ { - ULONG block_id; - ULONG inode_id; - ULONG inode_table_id; - USHORT free_blocks; - USHORT free_inodes; - USHORT used_dirs; - USHORT pad; - ULONG reserved[3]; + ULONG acle_size; + USHORT acle_perms; /* Access permissions */ + USHORT acle_type; /* Type of entry */ + USHORT acle_tag; /* User or group identity */ + USHORT acle_pad1; + ULONG acle_next; /* Pointer on next entry for the */ + /* same inode or on next free entry */ };
-/* The ext2 inode. */ -struct ext2_inode +/* + * Structure of a blocks group descriptor + */ +struct ext3_group_desc { - USHORT mode; - USHORT uid; - ULONG size; - ULONG atime; - ULONG ctime; - ULONG mtime; - ULONG dtime; - USHORT gid; - USHORT nlinks; - ULONG blockcnt; /* Blocks of 512 bytes!! */ - ULONG flags; - ULONG osd1; - union - { - struct datablocks - { - ULONG dir_blocks[INDIRECT_BLOCKS]; - ULONG indir_block; - ULONG double_indir_block; - ULONG tripple_indir_block; - } blocks; - char symlink[60]; - }; - ULONG version; - ULONG acl; - ULONG dir_acl; - ULONG fragment_addr; - ULONG osd2[3]; + ULONG bg_block_bitmap; /* Blocks bitmap block */ + ULONG bg_inode_bitmap; /* Inodes bitmap block */ + ULONG bg_inode_table; /* Inodes table block */ + USHORT bg_free_blocks_count; /* Free blocks count */ + USHORT bg_free_inodes_count; /* Free inodes count */ + USHORT bg_used_dirs_count; /* Directories count */ + USHORT bg_pad; + ULONG bg_reserved[3]; };
-/* The header of an ext2 directory entry. */ -struct ext2_dirent +/* + * Macro-instructions used to manage group descriptors + */ +#ifdef __KERNEL__ +# define EXT3_BLOCKS_PER_GROUP(s) ((s)->u.ext3_sb.s_blocks_per_group) +# define EXT3_DESC_PER_BLOCK(s) ((s)->u.ext3_sb.s_desc_per_block) +# define EXT3_INODES_PER_GROUP(s) ((s)->u.ext3_sb.s_inodes_per_group) +# define EXT3_DESC_PER_BLOCK_BITS(s) ((s)->u.ext3_sb.s_desc_per_block_bits) +#else +# define EXT3_BLOCKS_PER_GROUP(s) ((s)->s_blocks_per_group) +# define EXT3_DESC_PER_BLOCK(s) (EXT3_BLOCK_SIZE(s) / sizeof (struct ext3_group_desc)) +# define EXT3_INODES_PER_GROUP(s) ((s)->s_inodes_per_group) +#endif + +/* + * Constants relative to the data blocks + */ +#define EXT3_NDIR_BLOCKS 12 +#define EXT3_IND_BLOCK EXT3_NDIR_BLOCKS +#define EXT3_DIND_BLOCK (EXT3_IND_BLOCK + 1) +#define EXT3_TIND_BLOCK (EXT3_DIND_BLOCK + 1) +#define EXT3_N_BLOCKS (EXT3_TIND_BLOCK + 1) + +/* + * Inode flags + */ +#define EXT3_SECRM_FL 0x00000001 /* Secure deletion */ +#define EXT3_UNRM_FL 0x00000002 /* Undelete */ +#define EXT3_COMPR_FL 0x00000004 /* Compress file */ +#define EXT3_SYNC_FL 0x00000008 /* Synchronous updates */ +#define EXT3_IMMUTABLE_FL 0x00000010 /* Immutable file */ +#define EXT3_APPEND_FL 0x00000020 /* writes to file may only append */ +#define EXT3_NODUMP_FL 0x00000040 /* do not dump file */ +#define EXT3_NOATIME_FL 0x00000080 /* do not update atime */ +/* Reserved for compression usage... */ +#define EXT3_DIRTY_FL 0x00000100 +#define EXT3_COMPRBLK_FL 0x00000200 /* One or more compressed clusters */ +#define EXT3_NOCOMPR_FL 0x00000400 /* Don't compress */ +#define EXT3_ECOMPR_FL 0x00000800 /* Compression error */ +/* End compression flags --- maybe not all used */ +#define EXT3_INDEX_FL 0x00001000 /* hash-indexed directory */ +#define EXT3_IMAGIC_FL 0x00002000 /* AFS directory */ +#define EXT3_JOURNAL_DATA_FL 0x00004000 /* file data should be journaled */ +#define EXT3_RESERVED_FL 0x80000000 /* reserved for ext3 lib */ + +#define EXT3_FL_USER_VISIBLE 0x00005FFF /* User visible flags */ +#define EXT3_FL_USER_MODIFIABLE 0x000000FF /* User modifiable flags */ + +/* + * Inode dynamic state flags + */ +#define EXT3_STATE_JDATA 0x00000001 /* journaled data exists */ +#define EXT3_STATE_NEW 0x00000002 /* inode is newly created */ + +/* + * ioctl commands + */ +#define EXT3_IOC_GETFLAGS _IOR('f', 1, long) +#define EXT3_IOC_SETFLAGS _IOW('f', 2, long) +#define EXT3_IOC_GETVERSION _IOR('f', 3, long) +#define EXT3_IOC_SETVERSION _IOW('f', 4, long) +#define EXT3_IOC_GETVERSION_OLD _IOR('v', 1, long) +#define EXT3_IOC_SETVERSION_OLD _IOW('v', 2, long) +#ifdef CONFIG_JBD_DEBUG +#define EXT3_IOC_WAIT_FOR_READONLY _IOR('f', 99, long) +#endif + +/* + * Structure of an inode on the disk + */ +struct ext3_inode { + USHORT i_mode; /* File mode */ + USHORT i_uid; /* Low 16 bits of Owner Uid */ + ULONG i_size; /* Size in bytes */ + ULONG i_atime; /* Access time */ + ULONG i_ctime; /* Creation time */ + ULONG i_mtime; /* Modification time */ + ULONG i_dtime; /* Deletion Time */ + USHORT i_gid; /* Low 16 bits of Group Id */ + USHORT i_links_count; /* Links count */ + ULONG i_blocks; /* Blocks count */ + ULONG i_flags; /* File flags */ + union { + struct { + ULONG l_i_reserved1; + } linux1; + struct { + ULONG h_i_translator; + } hurd1; + struct { + ULONG m_i_reserved1; + } masix1; + } osd1; /* OS dependent 1 */ + ULONG i_block[EXT3_N_BLOCKS];/* Pointers to blocks */ + ULONG i_generation; /* File version (for NFS) */ + ULONG i_file_acl; /* File ACL */ + ULONG i_dir_acl; /* Directory ACL */ + ULONG i_faddr; /* Fragment address */ + union { + struct { + UCHAR l_i_frag; /* Fragment number */ + UCHAR l_i_fsize; /* Fragment size */ + USHORT i_pad1; + USHORT l_i_uid_high; /* these 2 fields */ + USHORT l_i_gid_high; /* were reserved2[0] */ + ULONG l_i_reserved2; + } linux2; + struct { + UCHAR h_i_frag; /* Fragment number */ + UCHAR h_i_fsize; /* Fragment size */ + USHORT h_i_mode_high; + USHORT h_i_uid_high; + USHORT h_i_gid_high; + ULONG h_i_author; + } hurd2; + struct { + UCHAR m_i_frag; /* Fragment number */ + UCHAR m_i_fsize; /* Fragment size */ + USHORT m_pad1; + ULONG m_i_reserved2[2]; + } masix2; + } osd2; /* OS dependent 2 */ +}; + +#define i_size_high i_dir_acl + +#if defined(__KERNEL__) || defined(__linux__) +#define i_reserved1 osd1.linux1.l_i_reserved1 +#define i_frag osd2.linux2.l_i_frag +#define i_fsize osd2.linux2.l_i_fsize +#define i_uid_low i_uid +#define i_gid_low i_gid +#define i_uid_high osd2.linux2.l_i_uid_high +#define i_gid_high osd2.linux2.l_i_gid_high +#define i_reserved2 osd2.linux2.l_i_reserved2 + +#elif defined(__GNU__) + +#define i_translator osd1.hurd1.h_i_translator +#define i_frag osd2.hurd2.h_i_frag; +#define i_fsize osd2.hurd2.h_i_fsize; +#define i_uid_high osd2.hurd2.h_i_uid_high +#define i_gid_high osd2.hurd2.h_i_gid_high +#define i_author osd2.hurd2.h_i_author + +#elif defined(__masix__) + +#define i_reserved1 osd1.masix1.m_i_reserved1 +#define i_frag osd2.masix2.m_i_frag +#define i_fsize osd2.masix2.m_i_fsize +#define i_reserved2 osd2.masix2.m_i_reserved2 + +#endif /* defined(__KERNEL__) || defined(__linux__) */ + +/* + * File system states + */ +#define EXT3_VALID_FS 0x0001 /* Unmounted cleanly */ +#define EXT3_ERROR_FS 0x0002 /* Errors detected */ +#define EXT3_ORPHAN_FS 0x0004 /* Orphans being recovered */ + +/* + * Mount flags + */ +#define EXT3_MOUNT_CHECK 0x0001 /* Do mount-time checks */ +#define EXT3_MOUNT_GRPID 0x0004 /* Create files with directory's group */ +#define EXT3_MOUNT_DEBUG 0x0008 /* Some debugging messages */ +#define EXT3_MOUNT_ERRORS_CONT 0x0010 /* Continue on errors */ +#define EXT3_MOUNT_ERRORS_RO 0x0020 /* Remount fs ro on errors */ +#define EXT3_MOUNT_ERRORS_PANIC 0x0040 /* Panic on errors */ +#define EXT3_MOUNT_MINIX_DF 0x0080 /* Mimics the Minix statfs */ +#define EXT3_MOUNT_NOLOAD 0x0100 /* Don't use existing journal*/ +#define EXT3_MOUNT_ABORT 0x0200 /* Fatal error detected */ +#define EXT3_MOUNT_DATA_FLAGS 0x0C00 /* Mode for data writes: */ + #define EXT3_MOUNT_JOURNAL_DATA 0x0400 /* Write data to journal */ + #define EXT3_MOUNT_ORDERED_DATA 0x0800 /* Flush data before commit */ + #define EXT3_MOUNT_WRITEBACK_DATA 0x0C00 /* No data ordering */ +#define EXT3_MOUNT_UPDATE_JOURNAL 0x1000 /* Update the journal format */ +#define EXT3_MOUNT_NO_UID32 0x2000 /* Disable 32-bit UIDs */ + +/* Compatibility, for having both ext2_fs.h and ext3_fs.h included at once */ +#ifndef _LINUX_EXT2_FS_H +#define clear_opt(o, opt) o &= ~EXT3_MOUNT_##opt +#define set_opt(o, opt) o |= EXT3_MOUNT_##opt +#define test_opt(sb, opt) ((sb)->u.ext3_sb.s_mount_opt & \ + EXT3_MOUNT_##opt) +#else +#define EXT2_MOUNT_NOLOAD EXT3_MOUNT_NOLOAD +#define EXT2_MOUNT_ABORT EXT3_MOUNT_ABORT +#endif + +#define ext3_set_bit ext2_set_bit +#define ext3_clear_bit ext2_clear_bit +#define ext3_test_bit ext2_test_bit +#define ext3_find_first_zero_bit ext2_find_first_zero_bit +#define ext3_find_next_zero_bit ext2_find_next_zero_bit + +/* + * Maximal mount counts between two filesystem checks + */ +#define EXT3_DFL_MAX_MNT_COUNT 20 /* Allow 20 mounts */ +#define EXT3_DFL_CHECKINTERVAL 0 /* Don't use interval check */ + +/* + * Behaviour when detecting errors + */ +#define EXT3_ERRORS_CONTINUE 1 /* Continue execution */ +#define EXT3_ERRORS_RO 2 /* Remount fs read-only */ +#define EXT3_ERRORS_PANIC 3 /* Panic */ +#define EXT3_ERRORS_DEFAULT EXT3_ERRORS_CONTINUE + +/* + * Structure of the super block + */ +struct ext3_super_block { +/*00*/ ULONG s_inodes_count; /* Inodes count */ + ULONG s_blocks_count; /* Blocks count */ + ULONG s_r_blocks_count; /* Reserved blocks count */ + ULONG s_free_blocks_count; /* Free blocks count */ +/*10*/ ULONG s_free_inodes_count; /* Free inodes count */ + ULONG s_first_data_block; /* First Data Block */ + ULONG s_log_block_size; /* Block size */ + LONG s_log_frag_size; /* Fragment size */ +/*20*/ ULONG s_blocks_per_group; /* # Blocks per group */ + ULONG s_frags_per_group; /* # Fragments per group */ + ULONG s_inodes_per_group; /* # Inodes per group */ + ULONG s_mtime; /* Mount time */ +/*30*/ ULONG s_wtime; /* Write time */ + USHORT s_mnt_count; /* Mount count */ + SHORT s_max_mnt_count; /* Maximal mount count */ + USHORT s_magic; /* Magic signature */ + USHORT s_state; /* File system state */ + USHORT s_errors; /* Behaviour when detecting errors */ + USHORT s_minor_rev_level; /* minor revision level */ +/*40*/ ULONG s_lastcheck; /* time of last check */ + ULONG s_checkinterval; /* max. time between checks */ + ULONG s_creator_os; /* OS */ + ULONG s_rev_level; /* Revision level */ +/*50*/ USHORT s_def_resuid; /* Default uid for reserved blocks */ + USHORT s_def_resgid; /* Default gid for reserved blocks */ + /* + * These fields are for EXT3_DYNAMIC_REV superblocks only. + * + * Note: the difference between the compatible feature set and + * the incompatible feature set is that if there is a bit set + * in the incompatible feature set that the kernel doesn't + * know about, it should refuse to mount the filesystem. + * + * e2fsck's requirements are more strict; if it doesn't know + * about a feature in either the compatible or incompatible + * feature set, it must abort and not try to meddle with + * things it doesn't understand... + */ + ULONG s_first_ino; /* First non-reserved inode */ + USHORT s_inode_size; /* size of inode structure */ + USHORT s_block_group_nr; /* block group # of this superblock */ + ULONG s_feature_compat; /* compatible feature set */ +/*60*/ ULONG s_feature_incompat; /* incompatible feature set */ + ULONG s_feature_ro_compat; /* readonly-compatible feature set */ +/*68*/ UCHAR s_uuid[16]; /* 128-bit uuid for volume */ +/*78*/ char s_volume_name[16]; /* volume name */ +/*88*/ char s_last_mounted[64]; /* directory where last mounted */ +/*C8*/ ULONG s_algorithm_usage_bitmap; /* For compression */ + /* + * Performance hints. Directory preallocation should only + * happen if the EXT3_FEATURE_COMPAT_DIR_PREALLOC flag is on. + */ + UCHAR s_prealloc_blocks; /* Nr of blocks to try to preallocate*/ + UCHAR s_prealloc_dir_blocks; /* Nr to preallocate for dirs */ + USHORT s_padding1; + /* + * Journaling support valid if EXT3_FEATURE_COMPAT_HAS_JOURNAL set. + */ +/*D0*/ UCHAR s_journal_uuid[16]; /* uuid of journal superblock */ +/*E0*/ ULONG s_journal_inum; /* inode number of journal file */ + ULONG s_journal_dev; /* device number of journal file */ + ULONG s_last_orphan; /* start of list of inodes to delete */ + +/*EC*/ ULONG s_reserved[197]; /* Padding to the end of the block */ +}; + +#ifdef __KERNEL__ +#define EXT3_SB(sb) (&((sb)->u.ext3_sb)) +#define EXT3_I(inode) (&((inode)->u.ext3_i)) +#else +/* Assume that user mode programs are passing in an ext3fs superblock, not + * a kernel struct super_block. This will allow us to call the feature-test + * macros from user land. */ +#define EXT3_SB(sb) (sb) +#endif + +#define NEXT_ORPHAN(inode) (inode)->u.ext3_i.i_dtime + +/* + * Codes for operating systems + */ +#define EXT3_OS_LINUX 0 +#define EXT3_OS_HURD 1 +#define EXT3_OS_MASIX 2 +#define EXT3_OS_FREEBSD 3 +#define EXT3_OS_LITES 4 + +/* + * Revision levels + */ +#define EXT3_GOOD_OLD_REV 0 /* The good old (original) format */ +#define EXT3_DYNAMIC_REV 1 /* V2 format w/ dynamic inode sizes */ + +#define EXT3_CURRENT_REV EXT3_GOOD_OLD_REV +#define EXT3_MAX_SUPP_REV EXT3_DYNAMIC_REV + +#define EXT3_GOOD_OLD_INODE_SIZE 128 + +/* + * Feature set definitions + */ + +#define EXT3_HAS_COMPAT_FEATURE(sb,mask) \ + ( EXT3_SB(sb)->s_es->s_feature_compat & cpu_to_le32(mask) ) +#define EXT3_HAS_RO_COMPAT_FEATURE(sb,mask) \ + ( EXT3_SB(sb)->s_es->s_feature_ro_compat & cpu_to_le32(mask) ) +#define EXT3_HAS_INCOMPAT_FEATURE(sb,mask) \ + ( EXT3_SB(sb)->s_es->s_feature_incompat & cpu_to_le32(mask) ) +#define EXT3_SET_COMPAT_FEATURE(sb,mask) \ + EXT3_SB(sb)->s_es->s_feature_compat |= cpu_to_le32(mask) +#define EXT3_SET_RO_COMPAT_FEATURE(sb,mask) \ + EXT3_SB(sb)->s_es->s_feature_ro_compat |= cpu_to_le32(mask) +#define EXT3_SET_INCOMPAT_FEATURE(sb,mask) \ + EXT3_SB(sb)->s_es->s_feature_incompat |= cpu_to_le32(mask) +#define EXT3_CLEAR_COMPAT_FEATURE(sb,mask) \ + EXT3_SB(sb)->s_es->s_feature_compat &= ~cpu_to_le32(mask) +#define EXT3_CLEAR_RO_COMPAT_FEATURE(sb,mask) \ + EXT3_SB(sb)->s_es->s_feature_ro_compat &= ~cpu_to_le32(mask) +#define EXT3_CLEAR_INCOMPAT_FEATURE(sb,mask) \ + EXT3_SB(sb)->s_es->s_feature_incompat &= ~cpu_to_le32(mask) + +#define EXT3_FEATURE_COMPAT_DIR_PREALLOC 0x0001 +#define EXT3_FEATURE_COMPAT_IMAGIC_INODES 0x0002 +#define EXT3_FEATURE_COMPAT_HAS_JOURNAL 0x0004 +#define EXT3_FEATURE_COMPAT_EXT_ATTR 0x0008 +#define EXT3_FEATURE_COMPAT_RESIZE_INODE 0x0010 +#define EXT3_FEATURE_COMPAT_DIR_INDEX 0x0020 + +#define EXT3_FEATURE_RO_COMPAT_SPARSE_SUPER 0x0001 +#define EXT3_FEATURE_RO_COMPAT_LARGE_FILE 0x0002 +#define EXT3_FEATURE_RO_COMPAT_BTREE_DIR 0x0004 + +#define EXT3_FEATURE_INCOMPAT_COMPRESSION 0x0001 +#define EXT3_FEATURE_INCOMPAT_FILETYPE 0x0002 +#define EXT3_FEATURE_INCOMPAT_RECOVER 0x0004 /* Needs recovery */ +#define EXT3_FEATURE_INCOMPAT_JOURNAL_DEV 0x0008 /* Journal device */ + +#define EXT3_FEATURE_COMPAT_SUPP 0 +/*#define EXT3_FEATURE_INCOMPAT_SUPP (EXT3_FEATURE_INCOMPAT_FILETYPE| \ + EXT3_FEATURE_INCOMPAT_RECOVER)*/ +#define EXT3_FEATURE_INCOMPAT_SUPP (EXT3_FEATURE_INCOMPAT_FILETYPE) +#define EXT3_FEATURE_RO_COMPAT_SUPP (EXT3_FEATURE_RO_COMPAT_SPARSE_SUPER| \ + EXT3_FEATURE_RO_COMPAT_LARGE_FILE| \ + EXT3_FEATURE_RO_COMPAT_BTREE_DIR) + +/* + * Default values for user and/or group using reserved blocks + */ +#define EXT3_DEF_RESUID 0 +#define EXT3_DEF_RESGID 0 + +/* + * Structure of a directory entry + */ +#define EXT3_NAME_LEN 255 + +struct ext3_dir_entry { + ULONG inode; /* Inode number */ + USHORT rec_len; /* Directory entry length */ + USHORT name_len; /* Name length */ + CHAR name[EXT3_NAME_LEN]; /* File name */ +}; + +/* + * The new version of the directory entry. Since EXT3 structures are + * stored in intel byte order, and the name_len field could never be + * bigger than 255 chars, it's safe to reclaim the extra byte for the + * file_type field. + */ +struct ext3_dir_entry_2 { + ULONG inode; /* Inode number */ + USHORT rec_len; /* Directory entry length */ + UCHAR name_len; /* Name length */ + UCHAR file_type; + CHAR name[EXT3_NAME_LEN]; /* File name */ +}; + +/* + * Ext3 directory file types. Only the low 3 bits are used. The + * other bits are reserved for now. + */ +#define EXT3_FT_UNKNOWN 0 +#define EXT3_FT_REG_FILE 1 +#define EXT3_FT_DIR 2 +#define EXT3_FT_CHRDEV 3 +#define EXT3_FT_BLKDEV 4 +#define EXT3_FT_FIFO 5 +#define EXT3_FT_SOCK 6 +#define EXT3_FT_SYMLINK 7 + +#define EXT3_FT_MAX 8 + +/* + * EXT3_DIR_PAD defines the directory entries boundaries + * + * NOTE: It must be a multiple of 4 + */ +#define EXT3_DIR_PAD 4 +#define EXT3_DIR_ROUND (EXT3_DIR_PAD - 1) +#define EXT3_DIR_REC_LEN(name_len) (((name_len) + 8 + EXT3_DIR_ROUND) & \ + ~EXT3_DIR_ROUND) + +#ifdef __KERNEL__ +/* + * Describe an inode's exact location on disk and in memory + */ +struct ext3_iloc { - ULONG inode; - USHORT direntlen; - UCHAR namelen; - UCHAR filetype; + struct buffer_head *bh; + struct ext3_inode *raw_inode; + unsigned long block_group; };
-/* - * End of code from grub/fs/ext2.c - */ - -typedef struct ext2_sblock EXT2_SUPER_BLOCK, *PEXT2_SUPER_BLOCK; -typedef struct ext2_inode EXT2_INODE, *PEXT2_INODE; -typedef struct ext2_block_group EXT2_GROUP_DESC, *PEXT2_GROUP_DESC; -typedef struct ext2_dirent EXT2_DIR_ENTRY, *PEXT2_DIR_ENTRY; + + +#endif /* __KERNEL__ */ + +#endif /* _LINUX_EXT3_FS_H */ + + + +typedef struct ext3_super_block EXT2_SUPER_BLOCK, *PEXT2_SUPER_BLOCK; +typedef struct ext3_inode EXT2_INODE, *PEXT2_INODE; +typedef struct ext3_group_desc EXT2_GROUP_DESC, *PEXT2_GROUP_DESC; +typedef struct ext3_dir_entry_2 EXT2_DIR_ENTRY, *PEXT2_DIR_ENTRY;
// EXT2_INODE::i_mode values #define EXT2_S_IRWXO 0x0007 // Other mask @@ -202,21 +661,23 @@
typedef struct { - ULONGLONG FileSize; // File size - ULONGLONG FilePointer; // File pointer + ULONGLONG FileSize; // File size + ULONGLONG FilePointer; // File pointer ULONG* FileBlockList; // File block list - UCHAR DriveNumber; // Drive number of open file - EXT2_INODE Inode; // File's inode + UCHAR DriveNumber; // Drive number of open file + EXT2_INODE Inode; // File's inode } EXT2_FILE_INFO, * PEXT2_FILE_INFO; + +
BOOLEAN Ext2OpenVolume(UCHAR DriveNumber, ULONGLONG VolumeStartSector, ULONGLONG PartitionSectorCount); FILE* Ext2OpenFile(PCSTR FileName); BOOLEAN Ext2LookupFile(PCSTR FileName, PEXT2_FILE_INFO Ext2FileInfoPointer); BOOLEAN Ext2SearchDirectoryBufferForFile(PVOID DirectoryBuffer, ULONG DirectorySize, PCHAR FileName, PEXT2_DIR_ENTRY DirectoryEntry); BOOLEAN Ext2ReadFile(FILE *FileHandle, ULONG BytesToRead, ULONG* BytesRead, PVOID Buffer); -ULONG Ext2GetFileSize(FILE *FileHandle); +ULONG Ext2GetFileSize(FILE *FileHandle); VOID Ext2SetFilePointer(FILE *FileHandle, ULONG NewFilePointer); -ULONG Ext2GetFilePointer(FILE *FileHandle); +ULONG Ext2GetFilePointer(FILE *FileHandle); BOOLEAN Ext2ReadVolumeSectors(UCHAR DriveNumber, ULONGLONG SectorNumber, ULONGLONG SectorCount, PVOID Buffer);
BOOLEAN Ext2ReadFileBig(FILE *FileHandle, ULONGLONG BytesToRead, ULONGLONG* BytesRead, PVOID Buffer); @@ -225,15 +686,15 @@ BOOLEAN Ext2ReadDirectory(ULONG Inode, PVOID* DirectoryBuffer, PEXT2_INODE InodePointer); BOOLEAN Ext2ReadBlock(ULONG BlockNumber, PVOID Buffer); BOOLEAN Ext2ReadPartialBlock(ULONG BlockNumber, ULONG StartingOffset, ULONG Length, PVOID Buffer); -ULONG Ext2GetGroupDescBlockNumber(ULONG Group); -ULONG Ext2GetGroupDescOffsetInBlock(ULONG Group); -ULONG Ext2GetInodeGroupNumber(ULONG Inode); -ULONG Ext2GetInodeBlockNumber(ULONG Inode); -ULONG Ext2GetInodeOffsetInBlock(ULONG Inode); +ULONG Ext2GetGroupDescBlockNumber(ULONG Group); +ULONG Ext2GetGroupDescOffsetInBlock(ULONG Group); +ULONG Ext2GetInodeGroupNumber(ULONG Inode); +ULONG Ext2GetInodeBlockNumber(ULONG Inode); +ULONG Ext2GetInodeOffsetInBlock(ULONG Inode); BOOLEAN Ext2ReadInode(ULONG Inode, PEXT2_INODE InodeBuffer); BOOLEAN Ext2ReadGroupDescriptor(ULONG Group, PEXT2_GROUP_DESC GroupBuffer); ULONG* Ext2ReadBlockPointerList(PEXT2_INODE Inode); -ULONGLONG Ext2GetInodeFileSize(PEXT2_INODE Inode); +ULONGLONG Ext2GetInodeFileSize(PEXT2_INODE Inode); BOOLEAN Ext2CopyIndirectBlockPointers(ULONG* BlockList, ULONG* CurrentBlockInList, ULONG BlockCount, ULONG IndirectBlock); BOOLEAN Ext2CopyDoubleIndirectBlockPointers(ULONG* BlockList, ULONG* CurrentBlockInList, ULONG BlockCount, ULONG DoubleIndirectBlock); BOOLEAN Ext2CopyTripleIndirectBlockPointers(ULONG* BlockList, ULONG* CurrentBlockInList, ULONG BlockCount, ULONG TripleIndirectBlock);
-
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