/** @file Copyright (c) 2019, Intel Corporation. All rights reserved.
SPDX-License-Identifier: BSD-2-Clause-Patent Copyright (c) 1982, 1986, 1989, 1993 The Regents of the University of California. All rights reserved. (c) UNIX System Laboratories, Inc. All or some portions of this file are derived from material licensed to the University of California by American Telephone and Telegraph Co. or Unix System Laboratories, Inc. and are reproduced herein with the permission of UNIX System Laboratories, Inc. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: 1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. 2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. 3. Neither the name of the University nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission. THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. @file dinode.h 8.6 (Berkeley) 9/13/94 Modified for ext2fs by Manuel Bouyer. Copyright (c) 1997 Manuel Bouyer. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: 1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. 2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. @file dinode.h 8.6 (Berkeley) 9/13/94 Modified for ext2fs by Manuel Bouyer. **/ #ifndef _UFS_EXT2FS_EXT2FS_DINODE_H_ #define _UFS_EXT2FS_EXT2FS_DINODE_H_ /** The root inode is the root of the file system. Inode 0 can't be used for normal purposes and bad blocks are normally linked to inode 1, thus the root inode is 2. Inode 3 to 10 are reserved in ext2fs. **/ #define EXT2_BADBLKINO ((INODE)1) #define EXT2_ROOTINO ((INODE)2) #define EXT2_ACLIDXINO ((INODE)3) #define EXT2_ACLDATAINO ((INODE)4) #define EXT2_BOOTLOADERINO ((INODE)5) #define EXT2_UNDELDIRINO ((INODE)6) #define EXT2_RESIZEINO ((INODE)7) #define EXT2_JOURNALINO ((INODE)8) #define EXT2_FIRSTINO ((INODE)11) /** A dinode contains all the meta-data associated with a UFS file. This structure defines the on-disk format of a dinode. Since this structure describes an on-disk structure, all its fields are defined by types with precise widths. **/ #define NDADDR 12 // Direct addresses in inode. #define NIADDR 3 // Indirect addresses in inode. #define EXT2_MAXSYMLINKLEN ((NDADDR+NIADDR) * sizeof (UINT32)) typedef struct { UINT16 Ext2DInodeMode; // 0: IFMT, permissions; see below. UINT16 Ext2DInodeUid; // 2: Owner UID UINT32 Ext2DInodeSize; // 4: Size (in bytes) UINT32 Ext2DInodeAcessTime; // 8: Acces time UINT32 Ext2DInodeCreatTime; // 12: Create time UINT32 Ext2DInodeModificationTime; // 16: Modification time UINT32 Ext2DInodeDeletionTime; // 20: Deletion time UINT16 Ext2DInodeGid; // 24: Owner GID UINT16 Ext2DInodeLinkcount; // 26: File link count UINT32 Ext2DInodeBlockcount; // 28: Blocks count UINT32 Ext2DInodeStatusFlags; // 32: Status flags (chflags) UINT32 Ext2DInodeLinuxRsvd1; // 36 UINT32 Ext2DInodeBlocks[NDADDR + NIADDR]; // 40: disk blocks UINT32 Ext2DInodeGen; // 100: generation number UINT32 Ext2DInodeFileAcl; // 104: file ACL (not implemented) UINT32 Ext2DInodeDirAcl; // 108: dir ACL (not implemented) UINT32 Ext2DInodeFragmentAddr; // 112: fragment address UINT8 Ext2DInodeFragmentNum; // 116: fragment number UINT8 Ext2DInodeFragmentSize; // 117: fragment size UINT16 Ext2DInodeLinuxRsvd2; // 118 UINT16 Ext2DInodeUidHigh; // 120: Owner UID top 16 bits UINT16 Ext2DInodeGidHigh; // 122: Owner GID top 16 bits UINT32 Ext2DInodeLinuxRsvd3; // 124 } EXTFS_DINODE; #define EXT4_MAX_HEADER_EXTENT_ENTRIES 4 #define EXT4_EXTENT_HEADER_MAGIC 0xF30A typedef struct { UINT16 EhMagic; // magic number: 0xF30A UINT16 EhEntries; // number of valid entries UINT16 EhMax; // capacity of store in entries UINT16 EhDepth; // the depth of extent tree UINT32 EhGen; // generation of extent tree } EXT4_EXTENT_HEADER; typedef struct { UINT32 EiBlk; // indexes logical blocks UINT32 EiLeafLo; // points to physical block of the next level UINT16 EiLeafHi; // high 16 bits of physical block UINT16 EiUnused; } EXT4_EXTENT_INDEX; typedef struct { UINT32 Eblk; // first logical block UINT16 Elen; // number of blocks UINT16 EstartHi; // high 16 bits of physical block UINT32 EstartLo; // low 32 bits of physical block } EXT4_EXTENT; typedef struct { EXT4_EXTENT_HEADER Eheader; union { EXT4_EXTENT_INDEX Eindex[EXT4_MAX_HEADER_EXTENT_ENTRIES]; EXT4_EXTENT Extent[EXT4_MAX_HEADER_EXTENT_ENTRIES]; } Enodes; } EXT4_EXTENT_TABLE; #define E2MAXSYMLINKLEN ((NDADDR + NIADDR) * sizeof(UINT32)) // // File permissions. // #define EXT2_IEXEC 0000100 // Executable. #define EXT2_IWRITE 0000200 // Writable. #define EXT2_IREAD 0000400 // Readable. #define EXT2_ISVTX 0001000 // Sticky bit. #define EXT2_ISGID 0002000 // Set-gid. #define EXT2_ISUID 0004000 // Set-uid. // // File types. // #define EXT2_IFMT 0170000 // Mask of file type. #define EXT2_IFIFO 0010000 // Named pipe (fifo). #define EXT2_IFCHR 0020000 // Character device. #define EXT2_IFDIR 0040000 // Directory file. #define EXT2_IFBLK 0060000 // Block device. #define EXT2_IFREG 0100000 // Regular file. #define EXT2_IFLNK 0120000 // Symbolic link. #define EXT2_IFSOCK 0140000 // UNIX domain socket. // // file flags // #define EXT2_SECRM 0x00000001 // Secure deletion #define EXT2_UNRM 0x00000002 // Undelete #define EXT2_COMPR 0x00000004 // Compress file #define EXT2_SYNC 0x00000008 // Synchronous updates #define EXT2_IMMUTABLE 0x00000010 // Immutable file #define EXT2_APPEND 0x00000020 // writes to file may only append #define EXT2_NODUMP 0x00000040 // do not dump file #define EXT4_EXTENTS 0x00080000 // Inode uses extents // // Size of on-disk inode. // #define EXT2_REV0_DINODE_SIZE sizeof(EXTFS_DINODE) #define EXT2_DINODE_SIZE(fs) ((fs)->Ext2Fs.Ext2FsRev > E2FS_REV0 ? \ (fs)->Ext2Fs.Ext2FsInodeSize : \ EXT2_REV0_DINODE_SIZE) /** * The Ext2DInodeBlocks fields may be overlaid with other information for * file types that do not have associated disk storage. Block * and character devices overlay the first data block with their * dev_t value. Short symbolic links place their path in the * di_db area. **/ // // Ext2Fs needs byte swapping on big-endian systems // #define E2FSILOAD(OLD, NEW) \ CopyMem((NEW),(OLD),sizeof(EXTFS_DINODE)) #define E2FSISAVE(OLD, NEW) \ CopyMem((NEW),(OLD),sizeof(EXTFS_DINODE)) #endif // !_UFS_EXT2FS_EXT2FS_DINODE_H_