e09c00cada
of Code 2009: - BSDL block and inode allocation policies for ext2fs. This involves the use FFS1 style block and inode allocation for ext2fs. Preallocation was removed since it was GPL'd. - Make ext2fs MPSAFE by introducing locks to per-mount datastructures. - Fixes for kern/122047 PR. - Various small bugfixes. - Move out of gnu/ directory. Sponsored by: Google Inc. Submitted by: Aditya Sarawgi <sarawgi.aditya AT SPAMFREE gmail DOT com>
82 lines
2.9 KiB
C
Executable File
82 lines
2.9 KiB
C
Executable File
/*-
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* Copyright (c) 2009 Aditya Sarawgi
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* All rights reserved.
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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 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 AUTHOR 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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* $FreeBSD$
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*/
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#ifndef _FS_EXT2FS_EXT2_DIR_H_
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#define _FS_EXT2FS_EXT2_DIR_H_
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/*
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* Structure of a directory entry
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*/
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#define EXT2FS_MAXNAMLEN 255
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struct ext2fs_direct {
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u_int32_t e2d_ino; /* inode number of entry */
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u_int16_t e2d_reclen; /* length of this record */
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u_int16_t e2d_namlen; /* length of string in d_name */
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char e2d_name[EXT2FS_MAXNAMLEN];/* name with length<=EXT2FS_MAXNAMLEN */
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};
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/*
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* The new version of the directory entry. Since EXT2 structures are
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* stored in intel byte order, and the name_len field could never be
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* bigger than 255 chars, it's safe to reclaim the extra byte for the
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* file_type field.
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*/
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struct ext2fs_direct_2 {
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u_int32_t e2d_ino; /* inode number of entry */
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u_int16_t e2d_reclen; /* length of this record */
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u_int8_t e2d_namlen; /* length of string in d_name */
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u_int8_t e2d_type; /* file type */
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char e2d_name[EXT2FS_MAXNAMLEN];/* name with length<=EXT2FS_MAXNAMLEN */
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};
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/*
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* Ext2 directory file types. Only the low 3 bits are used. The
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* other bits are reserved for now.
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*/
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#define EXT2_FT_UNKNOWN 0
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#define EXT2_FT_REG_FILE 1
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#define EXT2_FT_DIR 2
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#define EXT2_FT_CHRDEV 3
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#define EXT2_FT_BLKDEV 4
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#define EXT2_FT_FIFO 5
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#define EXT2_FT_SOCK 6
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#define EXT2_FT_SYMLINK 7
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#define EXT2_FT_MAX 8
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/*
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* EXT2_DIR_PAD defines the directory entries boundaries
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*
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* NOTE: It must be a multiple of 4
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*/
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#define EXT2_DIR_PAD 4
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#define EXT2_DIR_ROUND (EXT2_DIR_PAD - 1)
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#define EXT2_DIR_REC_LEN(name_len) (((name_len) + 8 + EXT2_DIR_ROUND) & \
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~EXT2_DIR_ROUND)
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#endif /* !_FS_EXT2FS_EXT2_DIR_H_ */
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