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sys/param.h was manually adjusted to not define __NetBSD_Version__ since it will be defined by the compiler.
286 lines
12 KiB
C
Vendored
286 lines
12 KiB
C
Vendored
/* $NetBSD: ext2fs_dinode.h,v 1.37 2017/01/13 18:04:36 christos Exp $ */
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/*
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* Copyright (c) 1982, 1989, 1993
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* The Regents of the University of California. All rights reserved.
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* (c) UNIX System Laboratories, Inc.
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* All or some portions of this file are derived from material licensed
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* to the University of California by American Telephone and Telegraph
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* Co. or Unix System Laboratories, Inc. and are reproduced herein with
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* the permission of UNIX System Laboratories, Inc.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)dinode.h 8.6 (Berkeley) 9/13/94
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* Modified for ext2fs by Manuel Bouyer.
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*/
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/*
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* Copyright (c) 1997 Manuel Bouyer.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* @(#)dinode.h 8.6 (Berkeley) 9/13/94
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* Modified for ext2fs by Manuel Bouyer.
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*/
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#ifndef _UFS_EXT2FS_EXT2FS_DINODE_H_
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#define _UFS_EXT2FS_EXT2FS_DINODE_H_
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#if !defined(_KERNEL) && !defined(_STANDALONE)
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#include <stddef.h> /* for offsetof */
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#endif
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#include <sys/stat.h>
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/*
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* The root inode is the root of the file system. Inode 0 can't be used for
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* normal purposes and bad blocks are normally linked to inode 1, thus
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* the root inode is 2.
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* Inode 3 to 10 are reserved in ext2fs.
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*/
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#define EXT2_BADBLKINO ((ino_t)1)
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#define EXT2_ROOTINO ((ino_t)2)
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#define EXT2_ACLIDXINO ((ino_t)3)
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#define EXT2_ACLDATAINO ((ino_t)4)
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#define EXT2_BOOTLOADERINO ((ino_t)5)
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#define EXT2_UNDELDIRINO ((ino_t)6)
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#define EXT2_RESIZEINO ((ino_t)7)
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#define EXT2_JOURNALINO ((ino_t)8)
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#define EXT2_FIRSTINO ((ino_t)11)
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/*
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* A dinode contains all the meta-data associated with a UFS file.
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* This structure defines the on-disk format of a dinode. Since
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* this structure describes an on-disk structure, all its fields
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* are defined by types with precise widths.
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*/
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/*
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* XXX these are the same values as UFS_NDADDR/UFS_NIADDR and it is
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* far from clear that there isn't code that relies on them being the
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* same.
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*/
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#define EXT2FS_NDADDR 12 /* Direct addresses in inode. */
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#define EXT2FS_NIADDR 3 /* Indirect addresses in inode. */
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#define EXT2_MAXSYMLINKLEN ((EXT2FS_NDADDR+EXT2FS_NIADDR) * sizeof (uint32_t))
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#define E2MAXSYMLINKLEN EXT2_MAXSYMLINKLEN
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struct ext2fs_dinode {
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uint16_t e2di_mode; /* 0: IFMT, permissions; see below. */
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uint16_t e2di_uid; /* 2: Owner UID */
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uint32_t e2di_size; /* 4: Size (in bytes) */
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uint32_t e2di_atime; /* 8: Access time */
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uint32_t e2di_ctime; /* 12: Create time */
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uint32_t e2di_mtime; /* 16: Modification time */
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uint32_t e2di_dtime; /* 20: Deletion time */
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uint16_t e2di_gid; /* 24: Owner GID */
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uint16_t e2di_nlink; /* 26: File link count */
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uint32_t e2di_nblock; /* 28: Blocks count */
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uint32_t e2di_flags; /* 32: Status flags (chflags) */
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uint32_t e2di_version; /* 36: was reserved1 */
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uint32_t e2di_blocks[EXT2FS_NDADDR+EXT2FS_NIADDR];
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/* 40: disk blocks */
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uint32_t e2di_gen; /* 100: generation number */
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uint32_t e2di_facl; /* 104: file ACL (ext3) */
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uint32_t e2di_size_high; /* 108: Size (in bytes) high */
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uint32_t e2di_obso_faddr;/* 112: obsolete fragment address (ext2) */
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uint16_t e2di_nblock_high; /* 116: Blocks count bits 47:32 (ext4) */
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uint16_t e2di_facl_high; /* 118: file ACL bits 47:32 (ext4/64bit) */
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uint16_t e2di_uid_high; /* 120: Owner UID top 16 bits (ext4) */
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uint16_t e2di_gid_high; /* 122: Owner GID top 16 bits (ext4) */
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uint16_t e2di_checksum_low; /* 124: crc LE (not implemented) (ext4) */
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uint16_t e2di_reserved; /* 126: reserved */
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uint16_t e2di_extra_isize; /* 128: inode extra size (over 128) actually used (ext4) */
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uint16_t e2di_checksum_high; /* 130: crc BE (not implemented) (ext4) */
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uint32_t e2di_ctime_extra; /* 132: ctime (nsec << 2 | high epoch) (ext4) */
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uint32_t e2di_mtime_extra; /* 136: mtime (nsec << 2 | high epoch) (ext4) */
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uint32_t e2di_atime_extra; /* 140: atime (nsec << 2 | high epoch) (ext4) */
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uint32_t e2di_crtime; /* 144: creation time (epoch) (ext4) */
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uint32_t e2di_crtime_extra; /* 148: creation time (nsec << 2 | high epoch) (ext4) */
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uint32_t e2di_version_high; /* 152: version high (ext4) */
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uint32_t e2di_projid; /* 156: project id (not implemented) (ext4) */
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};
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#define i_e2fs_mode i_din.e2fs_din->e2di_mode
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#define i_e2fs_uid i_din.e2fs_din->e2di_uid
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#define i_e2fs_size i_din.e2fs_din->e2di_size
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#define i_e2fs_atime i_din.e2fs_din->e2di_atime
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#define i_e2fs_ctime i_din.e2fs_din->e2di_ctime
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#define i_e2fs_mtime i_din.e2fs_din->e2di_mtime
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#define i_e2fs_dtime i_din.e2fs_din->e2di_dtime
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#define i_e2fs_gid i_din.e2fs_din->e2di_gid
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#define i_e2fs_nlink i_din.e2fs_din->e2di_nlink
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#define i_e2fs_nblock i_din.e2fs_din->e2di_nblock
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#define i_e2fs_flags i_din.e2fs_din->e2di_flags
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#define i_e2fs_version i_din.e2fs_din->e2di_version
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#define i_e2fs_blocks i_din.e2fs_din->e2di_blocks
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#define i_e2fs_rdev i_din.e2fs_din->e2di_rdev
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#define i_e2fs_gen i_din.e2fs_din->e2di_gen
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#define i_e2fs_facl i_din.e2fs_din->e2di_facl
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#define i_e2fs_nblock_high i_din.e2fs_din->e2di_nblock_high
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#define i_e2fs_facl_high i_din.e2fs_din->e2di_facl_high
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#define i_e2fs_uid_high i_din.e2fs_din->e2di_uid_high
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#define i_e2fs_gid_high i_din.e2fs_din->e2di_gid_high
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/* File permissions. */
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#define EXT2_IEXEC 0000100 /* Executable. */
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#define EXT2_IWRITE 0000200 /* Writable. */
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#define EXT2_IREAD 0000400 /* Readable. */
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#define EXT2_ISVTX 0001000 /* Sticky bit. */
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#define EXT2_ISGID 0002000 /* Set-gid. */
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#define EXT2_ISUID 0004000 /* Set-uid. */
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/* File types. */
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#define EXT2_IFMT 0170000 /* Mask of file type. */
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#define EXT2_IFIFO 0010000 /* Named pipe (fifo). */
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#define EXT2_IFCHR 0020000 /* Character device. */
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#define EXT2_IFDIR 0040000 /* Directory file. */
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#define EXT2_IFBLK 0060000 /* Block device. */
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#define EXT2_IFREG 0100000 /* Regular file. */
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#define EXT2_IFLNK 0120000 /* Symbolic link. */
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#define EXT2_IFSOCK 0140000 /* UNIX domain socket. */
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/* file flags */
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#define EXT2_SECRM 0x00000001 /* Secure deletion */
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#define EXT2_UNRM 0x00000002 /* Undelete */
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#define EXT2_COMPR 0x00000004 /* Compress file */
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#define EXT2_SYNC 0x00000008 /* Synchronous updates */
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#define EXT2_IMMUTABLE 0x00000010 /* Immutable file */
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#define EXT2_APPEND 0x00000020 /* writes to file may only append */
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#define EXT2_NODUMP 0x00000040 /* do not dump file */
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#define EXT2_NOATIME 0x00000080 /* do not update atime */
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#define EXT2_INDEX 0x00001000 /* hash-indexed directory */
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#define EXT2_IMAGIC 0x00002000 /* AFS directory */
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#define EXT2_JOURNAL_DATA 0x00004000 /* file data should be journaled */
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#define EXT2_NOTAIL 0x00008000 /* file tail should not be merged */
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#define EXT2_DIRSYNC 0x00010000 /* dirsync behaviour */
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#define EXT2_TOPDIR 0x00020000 /* Top of directory hierarchies*/
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#define EXT2_HUGE_FILE 0x00040000 /* Set to each huge file */
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#define EXT2_EXTENTS 0x00080000 /* Inode uses extents */
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#define EXT2_EA_INODE 0x00200000 /* Inode used for large EA */
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#define EXT2_EOFBLOCKS 0x00400000 /* Blocks allocated beyond EOF */
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#define EXT2_INLINE_DATA 0x10000000 /* Inode has inline data */
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#define EXT2_PROJINHERIT 0x20000000 /* Children inherit project ID */
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/* Size of on-disk inode. */
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#define EXT2_REV0_DINODE_SIZE 128U
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#define EXT2_DINODE_SIZE(fs) ((fs)->e2fs.e2fs_rev > E2FS_REV0 ? \
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(fs)->e2fs.e2fs_inode_size : \
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EXT2_REV0_DINODE_SIZE)
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#define EXT2_DINODE_FITS(dinode, field, isize) (\
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(isize > EXT2_REV0_DINODE_SIZE) \
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&& ((EXT2_REV0_DINODE_SIZE + (dinode)->e2di_extra_isize) >= offsetof(struct ext2fs_dinode, field) + sizeof((dinode)->field)) \
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)
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/*
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* Time encoding
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* Lower two bits of extra field are extra high bits for epoch; unfortunately still, Linux kernels treat 11 there as 00 for compatibility
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* Rest of extra fields are nanoseconds
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*/
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static __inline void
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ext2fs_dinode_time_get(struct timespec *ts, uint32_t epoch, uint32_t extra)
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{
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ts->tv_sec = (signed) epoch;
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if (extra) {
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uint64_t epoch_bits = extra & 0x3;
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/* XXX compatibility with linux kernel < 4.20 */
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if (epoch_bits == 3 && ts->tv_sec < 0)
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epoch_bits = 0;
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ts->tv_sec |= epoch_bits << 32;
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ts->tv_nsec = extra >> 2;
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} else {
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ts->tv_nsec = 0;
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}
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}
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#define EXT2_DINODE_TIME_GET(ts, dinode, field, isize) \
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ext2fs_dinode_time_get(ts, (dinode)->field, \
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EXT2_DINODE_FITS(dinode, field ## _extra, isize) \
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? (dinode)->field ## _extra : 0 \
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)
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static __inline void
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ext2fs_dinode_time_set(const struct timespec *ts, uint32_t *epoch, uint32_t *extra)
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{
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*epoch = (int32_t) ts->tv_sec;
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if (extra) {
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uint32_t epoch_bits = (ts->tv_sec >> 32) & 0x3;
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*extra = (ts->tv_nsec << 2) | epoch_bits;
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}
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}
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#define EXT2_DINODE_TIME_SET(ts, dinode, field, isize) \
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ext2fs_dinode_time_set(ts, &(dinode)->field, \
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EXT2_DINODE_FITS(dinode, field ## _extra, isize) \
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? &(dinode)->field ## _extra : NULL \
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)
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/*
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* The e2di_blocks fields may be overlaid with other information for
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* file types that do not have associated disk storage. Block
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* and character devices overlay the first data block with their
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* dev_t value. Short symbolic links place their path in the
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* di_db area.
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*/
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#define e2di_rdev e2di_blocks[0]
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#define e2di_shortlink e2di_blocks
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/* e2fs needs byte swapping on big-endian systems */
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#if BYTE_ORDER == LITTLE_ENDIAN
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# define e2fs_iload(old, new, isize) \
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memcpy((new),(old),(isize))
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# define e2fs_isave(old, new, isize) \
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memcpy((new),(old),(isize))
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#else
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void e2fs_i_bswap(struct ext2fs_dinode *, struct ext2fs_dinode *, size_t);
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# define e2fs_iload(old, new, isize) e2fs_i_bswap((old), (new), (isize))
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# define e2fs_isave(old, new, isize) e2fs_i_bswap((old), (new), (isize))
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#endif
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#endif /* !_UFS_EXT2FS_EXT2FS_DINODE_H_ */ |