X-Git-Url: https://git.ucc.asn.au/?a=blobdiff_plain;ds=sidebyside;f=Modules%2FFilesystems%2FExt2%2Fext2fs.h;fp=Modules%2FFilesystems%2FExt2%2Fext2fs.h;h=8fd87ce415af3ae8830679d6e6362e2160b1dbf1;hb=923a9dc473851ec2bb1c94021bbf139724e7e8a5;hp=0000000000000000000000000000000000000000;hpb=f4646f2b6d64e42d1eec1d97877ae23eac6863f6;p=tpg%2Facess2.git

diff --git a/Modules/Filesystems/Ext2/ext2fs.h b/Modules/Filesystems/Ext2/ext2fs.h
new file mode 100644
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--- /dev/null
+++ b/Modules/Filesystems/Ext2/ext2fs.h
@@ -0,0 +1,156 @@
+/**
+ * Acess2
+ * \file ext2fs.h
+ * \brief EXT2 Filesystem Driver
+ */
+#ifndef _EXT2FS_H_
+#define _EXT2FS_H_
+
+/**
+ \name Inode Flag Values
+ \{
+*/
+#define EXT2_S_IFMT		0xF000	//!< Format Mask
+#define EXT2_S_IFSOCK	0xC000	//!< Socket
+#define EXT2_S_IFLNK	0xA000	//!< Symbolic Link
+#define EXT2_S_IFREG	0x8000	//!< Regular File
+#define EXT2_S_IFBLK	0x6000	//!< Block Device
+#define EXT2_S_IFDIR	0x4000	//!< Directory
+#define EXT2_S_IFCHR	0x2000	//!< Character Device
+#define EXT2_S_IFIFO	0x1000	//!< FIFO
+#define EXT2_S_ISUID	0x0800	//!< SUID
+#define EXT2_S_ISGID	0x0400	//!< SGID
+#define EXT2_S_ISVTX	0x0200	//!< sticky bit
+#define EXT2_S_IRWXU	0700	//!< user access rights mask
+#define EXT2_S_IRUSR	0400	//!< Owner Read
+#define EXT2_S_IWUSR	0200	//!< Owner Write
+#define EXT2_S_IXUSR	0100	//!< Owner Execute
+#define EXT2_S_IRWXG	0070	//!< Group Access rights mask
+#define EXT2_S_IRGRP	0040	//!< Group Read
+#define EXT2_S_IWGRP	0020	//!< Group Write
+#define EXT2_S_IXGRP	0010	//!< Group Execute
+#define EXT2_S_IRWXO	0007	//!< Global Access rights mask
+#define EXT2_S_IROTH	0004	//!< Global Read
+#define EXT2_S_IWOTH	0002	//!< Global Write
+#define EXT2_S_IXOTH	0001	//!< Global Execute
+//! \}
+
+#define EXT2_NAME_LEN 255	//!< Maximum Name Length
+
+// === TYPEDEFS ===
+typedef struct ext2_inode_s			tExt2_Inode;	//!< Inode Type
+typedef struct ext2_super_block_s	tExt2_SuperBlock;	//!< Superblock Type
+typedef struct ext2_group_desc_s	tExt2_Group;	//!< Group Descriptor Type
+typedef struct ext2_dir_entry_s		tExt2_DirEnt;	//!< Directory Entry Type
+
+// === STRUCTURES ===
+/**
+ * \brief EXT2 Superblock Structure
+ */
+struct ext2_super_block_s {
+	Uint32	s_inodes_count;		//!< Inodes count
+	Uint32	s_blocks_count;		//!< Blocks count
+	Uint32	s_r_blocks_count;	//!< Reserved blocks count
+	Uint32	s_free_blocks_count;	//!< Free blocks count
+	Uint32	s_free_inodes_count;	//!< Free inodes count
+	Uint32	s_first_data_block;	//!< First Data Block
+	Uint32	s_log_block_size;	//!< Block size
+	Sint32	s_log_frag_size;	//!< Fragment size
+	Uint32	s_blocks_per_group;	//!< Number Blocks per group
+	Uint32	s_frags_per_group;	//!< Number Fragments per group
+	Uint32	s_inodes_per_group;	//!< Number Inodes per group
+	Uint32	s_mtime;			//!< Mount time
+	Uint32	s_wtime;			//!< Write time
+	Uint16	s_mnt_count;		//!< Mount count
+	Sint16	s_max_mnt_count;	//!< Maximal mount count
+	Uint16	s_magic;			//!< Magic signature
+	Uint16	s_state;			//!< File system state
+	Uint16	s_errors;			//!< Behaviour when detecting errors
+	Uint16	s_pad;				//!< Padding
+	Uint32	s_lastcheck;		//!< time of last check
+	Uint32	s_checkinterval;	//!< max. time between checks
+	Uint32	s_creator_os;		//!< Formatting OS
+	Uint32	s_rev_level;		//!< Revision level
+	Uint16	s_def_resuid;		//!< Default uid for reserved blocks
+	Uint16	s_def_resgid;		//!< Default gid for reserved blocks
+	Uint32	s_reserved[235];	//!< Padding to the end of the block
+};
+
+/**
+ * \struct ext2_inode_s
+ * \brief EXT2 Inode Definition
+ */
+struct ext2_inode_s {
+	Uint16 i_mode;	//!< File mode
+	Uint16 i_uid;	//!< Owner Uid
+	Uint32 i_size;	//!< Size in bytes
+	Uint32 i_atime;	//!< Access time
+	Uint32 i_ctime; //!< Creation time
+	Uint32 i_mtime; //!< Modification time
+	Uint32 i_dtime; //!< Deletion Time
+	Uint16 i_gid;	//!< Group Id
+	Uint16 i_links_count;	//!< Links count
+	Uint32 i_blocks;	//!< Number of blocks allocated for the file
+	Uint32 i_flags;	//!< File flags
+	union {
+		Uint32 linux_reserved1;	//!< Linux: Reserved
+		Uint32 hurd_translator;	//!< HURD: Translator
+		Uint32 masix_reserved1;	//!< Masix: Reserved
+	} osd1;	//!< OS dependent 1
+	Uint32 i_block[15];	//!< Pointers to blocks
+	Uint32 i_version; 	//!< File version (for NFS)
+	Uint32 i_file_acl;	//!< File ACL
+	Uint32 i_dir_acl;	//!< Directory ACL / Extended File Size
+	Uint32 i_faddr; 	//!< Fragment address
+	union {
+		struct {
+			Uint8 l_i_frag;	//!< Fragment number
+			Uint8 l_i_fsize;	//!< Fragment size
+			Uint16 i_pad1;	//!< Padding
+			Uint32 l_i_reserved2[2];	//!< Reserved
+		} linux2;
+		struct {
+			Uint8 h_i_frag; //!< Fragment number
+			Uint8 h_i_fsize; //!< Fragment size
+			Uint16 h_i_mode_high;	//!< Mode High Bits
+			Uint16 h_i_uid_high;	//!< UID High Bits
+			Uint16 h_i_gid_high;	//!< GID High Bits
+			Uint32 h_i_author;	//!< Creator ID
+		} hurd2;
+		struct {
+			Uint8 m_i_frag;	//!< Fragment number
+			Uint8 m_i_fsize;	//!< Fragment size
+			Uint16 m_pad1;	//!< Padding
+			Uint32 m_i_reserved2[2];	//!< reserved
+		} masix2;
+	} osd2; //!< OS dependent 2
+};
+
+/**
+ * \struct ext2_group_desc_s
+ * \brief EXT2 Group Descriptor
+ */
+struct ext2_group_desc_s {
+	Uint32	bg_block_bitmap;	//!< Blocks bitmap block
+	Uint32	bg_inode_bitmap;	//!< Inodes bitmap block
+	Uint32	bg_inode_table;	//!< Inodes table block
+	Uint16	bg_free_blocks_count;	//!< Free blocks count
+	Uint16	bg_free_inodes_count;	//!< Free inodes count
+	Uint16	bg_used_dirs_count;	//!< Directories count
+	Uint16	bg_pad;	//!< Padding
+	Uint32	bg_reserved[3];	//!< Reserved
+};
+
+/**
+ * \brief EXT2 Directory Entry
+ * \note The name may take up less than 255 characters
+ */
+struct ext2_dir_entry_s {
+	Uint32	inode;		//!< Inode number
+	Uint16	rec_len; 	//!< Directory entry length
+	Uint8	name_len;	//!< Short Name Length
+	Uint8	type;		//!< File Type
+	char	name[];		//!< File name
+};
+
+#endif