Initial Revision

1 files changed, 451 insertions, 0 deletions

diff --git a/serverboot/ext2_fs.h b/serverboot/ext2_fs.h
new file mode 100644
index 00000000..4068c002
--- /dev/null
+++ b/serverboot/ext2_fs.h
@@ -0,0 +1,451 @@
+/*
+ *  linux/include/linux/ext2_fs.h
+ *
+ *  Copyright (C) 1992, 1993, 1994  Remy Card (card@masi.ibp.fr)
+ *                                  Laboratoire MASI - Institut Blaise Pascal
+ *                                  Universite Pierre et Marie Curie (Paris VI)
+ *
+ *  from
+ *
+ *  linux/include/linux/minix_fs.h
+ *
+ *  Copyright (C) 1991, 1992  Linus Torvalds
+ */
+
+#ifndef _LINUX_EXT2_FS_H
+#define _LINUX_EXT2_FS_H
+
+/*
+ * The second extended filesystem constants/structures
+ */
+
+/*
+ * Define EXT2FS_DEBUG to produce debug messages
+ */
+#undef EXT2FS_DEBUG
+
+/*
+ * Define EXT2FS_DEBUG_CACHE to produce cache debug messages
+ */
+#undef EXT2FS_DEBUG_CACHE
+
+/*
+ * Define EXT2FS_CHECK_CACHE to add some checks to the name cache code
+ */
+#undef EXT2FS_CHECK_CACHE
+
+/*
+ * Define EXT2FS_PRE_02B_COMPAT to convert ext 2 fs prior to 0.2b
+ */
+#undef EXT2FS_PRE_02B_COMPAT
+
+/*
+ * Define DONT_USE_DCACHE to inhibit the directory cache
+ */
+#define DONT_USE_DCACHE
+
+/*
+ * Define EXT2_PREALLOCATE to preallocate data blocks for expanding files
+ */
+#define EXT2_PREALLOCATE
+
+/*
+ * The second extended file system version
+ */
+#define EXT2FS_DATE		"94/03/10"
+#define EXT2FS_VERSION		"0.5"
+
+/*
+ * Debug code
+ */
+#ifdef EXT2FS_DEBUG
+#	define ext2_debug(f, a...)	{ \
+					printk ("EXT2-fs DEBUG (%s, %d): %s:", \
+						__FILE__, __LINE__, __FUNCTION__); \
+				  	printk (f, ## a); \
+					}
+#else
+#	define ext2_debug(f, a...)	/**/
+#endif
+
+/*
+ * Special inodes numbers
+ */
+#define	EXT2_BAD_INO		 1	/* Bad blocks inode */
+#define EXT2_ROOT_INO		 2	/* Root inode */
+#define EXT2_ACL_IDX_INO	 3	/* ACL inode */
+#define EXT2_ACL_DATA_INO	 4	/* ACL inode */
+#define EXT2_BOOT_LOADER_INO	 5	/* Boot loader inode */
+#define EXT2_UNDEL_DIR_INO	 6	/* Undelete directory inode */
+#define EXT2_FIRST_INO		11	/* First non reserved inode */
+
+/*
+ * The second extended file system magic number
+ */
+#define EXT2_PRE_02B_MAGIC	0xEF51
+#define EXT2_SUPER_MAGIC	0xEF53
+
+/*
+ * Maximal count of links to a file
+ */
+#define EXT2_LINK_MAX		32000
+
+/*
+ * Macro-instructions used to manage several block sizes
+ */
+#define EXT2_MIN_BLOCK_SIZE		1024
+#define	EXT2_MAX_BLOCK_SIZE		4096
+#define EXT2_MIN_BLOCK_LOG_SIZE		  10
+#ifdef __KERNEL__
+# define EXT2_BLOCK_SIZE(s)		((s)->s_blocksize)
+#else
+# define EXT2_BLOCK_SIZE(s)		(EXT2_MIN_BLOCK_SIZE << (s)->s_log_block_size)
+#endif
+#define EXT2_ACLE_PER_BLOCK(s)		(EXT2_BLOCK_SIZE(s) / sizeof (struct ext2_acl_entry))
+#define	EXT2_ADDR_PER_BLOCK(s)		(EXT2_BLOCK_SIZE(s) / sizeof (unsigned long))
+#ifdef __KERNEL__
+# define EXT2_BLOCK_SIZE_BITS(s)	((s)->u.ext2_sb.s_es->s_log_block_size + 10)
+#else
+# define EXT2_BLOCK_SIZE_BITS(s)	((s)->s_log_block_size + 10)
+#endif
+#define	EXT2_INODES_PER_BLOCK(s)	(EXT2_BLOCK_SIZE(s) / sizeof (struct ext2_inode))
+
+/*
+ * Macro-instructions used to manage fragments
+ */
+#define EXT2_MIN_FRAG_SIZE		1024
+#define	EXT2_MAX_FRAG_SIZE		4096
+#define EXT2_MIN_FRAG_LOG_SIZE		  10
+#ifdef __KERNEL__
+# define EXT2_FRAG_SIZE(s)		((s)->u.ext2_sb.s_frag_size)
+# define EXT2_FRAGS_PER_BLOCK(s)	((s)->u.ext2_sb.s_frags_per_block)
+#else
+# define EXT2_FRAG_SIZE(s)		(EXT2_MIN_FRAG_SIZE << (s)->s_log_frag_size)
+# define EXT2_FRAGS_PER_BLOCK(s)	(EXT2_BLOCK_SIZE(s) / EXT2_FRAG_SIZE(s))
+#endif
+
+/*
+ * ACL structures
+ */
+struct ext2_acl_header	/* Header of Access Control Lists */
+{
+	unsigned long aclh_size;
+	unsigned long aclh_file_count;
+	unsigned long aclh_acle_count;
+	unsigned long aclh_first_acle;
+};
+
+struct ext2_acl_entry	/* Access Control List Entry */
+{
+	unsigned long  acle_size;
+	unsigned short acle_perms;	/* Access permissions */
+	unsigned short acle_type;	/* Type of entry */
+	unsigned short acle_tag;	/* User or group identity */
+	unsigned short acle_pad1;
+	unsigned long  acle_next;	/* Pointer on next entry for the */
+					/* same inode or on next free entry */
+};
+
+/*
+ * Structure of a blocks group descriptor
+ */
+struct ext2_old_group_desc
+{
+	unsigned long  bg_block_bitmap;		/* Blocks bitmap block */
+	unsigned long  bg_inode_bitmap;		/* Inodes bitmap block */
+	unsigned long  bg_inode_table;		/* Inodes table block */
+	unsigned short bg_free_blocks_count;	/* Free blocks count */
+	unsigned short bg_free_inodes_count;	/* Free inodes count */
+};
+
+struct ext2_group_desc
+{
+	unsigned long  bg_block_bitmap;		/* Blocks bitmap block */
+	unsigned long  bg_inode_bitmap;		/* Inodes bitmap block */
+	unsigned long  bg_inode_table;		/* Inodes table block */
+	unsigned short bg_free_blocks_count;	/* Free blocks count */
+	unsigned short bg_free_inodes_count;	/* Free inodes count */
+	unsigned short bg_used_dirs_count;	/* Directories count */
+	unsigned short bg_pad;
+	unsigned long  bg_reserved[3];
+};
+
+/*
+ * Macro-instructions used to manage group descriptors
+ */
+#ifdef __KERNEL__
+# define EXT2_BLOCKS_PER_GROUP(s)	((s)->u.ext2_sb.s_blocks_per_group)
+# define EXT2_DESC_PER_BLOCK(s)		((s)->u.ext2_sb.s_desc_per_block)
+# define EXT2_INODES_PER_GROUP(s)	((s)->u.ext2_sb.s_inodes_per_group)
+#else
+# define EXT2_BLOCKS_PER_GROUP(s)	((s)->s_blocks_per_group)
+# define EXT2_DESC_PER_BLOCK(s)		(EXT2_BLOCK_SIZE(s) / sizeof (struct ext2_group_desc))
+# define EXT2_INODES_PER_GROUP(s)	((s)->s_inodes_per_group)
+#endif
+
+/*
+ * Constants relative to the data blocks
+ */
+#define	EXT2_NDIR_BLOCKS		12
+#define	EXT2_IND_BLOCK			EXT2_NDIR_BLOCKS
+#define	EXT2_DIND_BLOCK			(EXT2_IND_BLOCK + 1)
+#define	EXT2_TIND_BLOCK			(EXT2_DIND_BLOCK + 1)
+#define	EXT2_N_BLOCKS			(EXT2_TIND_BLOCK + 1)
+
+/*
+ * Inode flags
+ */
+#define	EXT2_SECRM_FL			0x0001	/* Secure deletion */
+#define	EXT2_UNRM_FL			0x0002	/* Undelete */
+#define	EXT2_COMPR_FL			0x0004	/* Compress file */
+#define EXT2_SYNC_FL			0x0008	/* Synchronous updates */
+
+/*
+ * ioctl commands
+ */
+#define	EXT2_IOC_GETFLAGS		_IOR('f', 1, long)
+#define	EXT2_IOC_SETFLAGS		_IOW('f', 2, long)
+#define	EXT2_IOC_GETVERSION		_IOR('v', 1, long)
+#define	EXT2_IOC_SETVERSION		_IOW('v', 2, long)
+
+/*
+ * Structure of an inode on the disk
+ */
+struct ext2_inode {
+	unsigned short i_mode;		/* File mode */
+	unsigned short i_uid;		/* Owner Uid */
+	unsigned long  i_size;		/* Size in bytes */
+	unsigned long  i_atime;		/* Access time */
+	unsigned long  i_ctime;		/* Creation time */
+	unsigned long  i_mtime;		/* Modification time */
+	unsigned long  i_dtime;		/* Deletion Time */
+	unsigned short i_gid;		/* Group Id */
+	unsigned short i_links_count;	/* Links count */
+	unsigned long  i_blocks;	/* Blocks count */
+	unsigned long  i_flags;		/* File flags */
+	unsigned long  i_reserved1;
+	unsigned long  i_block[EXT2_N_BLOCKS];/* Pointers to blocks */
+	unsigned long  i_version;	/* File version (for NFS) */
+	unsigned long  i_file_acl;	/* File ACL */
+	unsigned long  i_dir_acl;	/* Directory ACL */
+	unsigned long  i_faddr;		/* Fragment address */
+	unsigned char  i_frag;		/* Fragment number */
+	unsigned char  i_fsize;		/* Fragment size */
+	unsigned short i_pad1;
+	unsigned long  i_reserved2[2];
+};
+
+/*
+ * File system states
+ */
+#define	EXT2_VALID_FS			0x0001	/* Unmounted cleany */
+#define	EXT2_ERROR_FS			0x0002	/* Errors detected */
+
+/*
+ * Mount flags
+ */
+#define EXT2_MOUNT_CHECK_NORMAL		0x0001	/* Do some more checks */
+#define EXT2_MOUNT_CHECK_STRICT		0x0002	/* Do again more checks */
+#define EXT2_MOUNT_CHECK		(EXT2_MOUNT_CHECK_NORMAL | \
+					 EXT2_MOUNT_CHECK_STRICT)
+#define EXT2_MOUNT_GRPID		0x0004	/* Create files with directory's group */
+#define EXT2_MOUNT_DEBUG		0x0008	/* Some debugging messages */
+#define EXT2_MOUNT_ERRORS_CONT		0x0010	/* Continue on errors */
+#define EXT2_MOUNT_ERRORS_RO		0x0020	/* Remount fs ro on errors */
+#define EXT2_MOUNT_ERRORS_PANIC		0x0040	/* Panic on errors */
+
+#define clear_opt(o, opt)		o &= ~EXT2_MOUNT_##opt
+#define set_opt(o, opt)			o |= EXT2_MOUNT_##opt
+#define test_opt(sb, opt)		((sb)->u.ext2_sb.s_mount_opt & \
+					 EXT2_MOUNT_##opt)
+/*
+ * Maximal mount counts between two filesystem checks
+ */
+#define EXT2_DFL_MAX_MNT_COUNT		20	/* Allow 20 mounts */
+#define EXT2_DFL_CHECKINTERVAL		0	/* Don't use interval check */
+
+/*
+ * Behaviour when detecting errors
+ */
+#define EXT2_ERRORS_CONTINUE		1	/* Continue execution */
+#define EXT2_ERRORS_RO			2	/* Remount fs read-only */
+#define EXT2_ERRORS_PANIC		3	/* Panic */
+#define EXT2_ERRORS_DEFAULT		EXT2_ERRORS_CONTINUE
+
+/*
+ * Structure of the super block
+ */
+struct ext2_super_block {
+	unsigned long  s_inodes_count;	/* Inodes count */
+	unsigned long  s_blocks_count;	/* Blocks count */
+	unsigned long  s_r_blocks_count;/* Reserved blocks count */
+	unsigned long  s_free_blocks_count;/* Free blocks count */
+	unsigned long  s_free_inodes_count;/* Free inodes count */
+	unsigned long  s_first_data_block;/* First Data Block */
+	unsigned long  s_log_block_size;/* Block size */
+	long           s_log_frag_size;	/* Fragment size */
+	unsigned long  s_blocks_per_group;/* # Blocks per group */
+	unsigned long  s_frags_per_group;/* # Fragments per group */
+	unsigned long  s_inodes_per_group;/* # Inodes per group */
+	unsigned long  s_mtime;		/* Mount time */
+	unsigned long  s_wtime;		/* Write time */
+	unsigned short s_mnt_count;	/* Mount count */
+	short          s_max_mnt_count;	/* Maximal mount count */
+	unsigned short s_magic;		/* Magic signature */
+	unsigned short s_state;		/* File system state */
+	unsigned short s_errors;	/* Behaviour when detecting errors */
+	unsigned short s_pad;
+	unsigned long  s_lastcheck;	/* time of last check */
+	unsigned long  s_checkinterval;	/* max. time between checks */
+	unsigned long  s_reserved[238];	/* Padding to the end of the block */
+};
+
+/*
+ * Structure of a directory entry
+ */
+#define EXT2_NAME_LEN 255
+
+struct ext2_dir_entry {
+	unsigned long  inode;			/* Inode number */
+	unsigned short rec_len;			/* Directory entry length */
+	unsigned short name_len;		/* Name length */
+	char           name[EXT2_NAME_LEN];	/* File name */
+};
+
+/*
+ * EXT2_DIR_PAD defines the directory entries boundaries
+ *
+ * NOTE: It must be a multiple of 4
+ */
+#define EXT2_DIR_PAD		 	4
+#define EXT2_DIR_ROUND 			(EXT2_DIR_PAD - 1)
+#define EXT2_DIR_REC_LEN(name_len)	(((name_len) + 8 + EXT2_DIR_ROUND) & \
+					 ~EXT2_DIR_ROUND)
+
+#ifdef __KERNEL__
+/*
+ * Function prototypes
+ */
+
+/*
+ * Ok, these declarations are also in <linux/kernel.h> but none of the
+ * ext2 source programs needs to include it so they are duplicated here.
+ */
+#if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 5)
+# define NORET_TYPE    __volatile__
+# define ATTRIB_NORET  /**/
+# define NORET_AND     /**/
+#else
+# define NORET_TYPE    /**/
+# define ATTRIB_NORET  __attribute__((noreturn))
+# define NORET_AND     noreturn,
+#endif
+
+/* acl.c */
+extern int ext2_permission (struct inode *, int);
+
+/* balloc.c */
+extern int ext2_new_block (struct super_block *, unsigned long,
+			   unsigned long *, unsigned long *);
+extern void ext2_free_blocks (struct super_block *, unsigned long,
+			      unsigned long);
+extern unsigned long ext2_count_free_blocks (struct super_block *);
+extern void ext2_check_blocks_bitmap (struct super_block *);
+
+/* bitmap.c */
+extern unsigned long ext2_count_free (struct buffer_head *, unsigned);
+
+#ifndef DONT_USE_DCACHE
+/* dcache.c */
+extern void ext2_dcache_invalidate (unsigned short);
+extern unsigned long ext2_dcache_lookup (unsigned short, unsigned long,
+					 const char *, int);
+extern void ext2_dcache_add (unsigned short, unsigned long, const char *,
+			     int, unsigned long);
+extern void ext2_dcache_remove (unsigned short, unsigned long, const char *,
+				int);
+#endif
+
+/* dir.c */
+extern int ext2_check_dir_entry (char *, struct inode *,
+				 struct ext2_dir_entry *, struct buffer_head *,
+				 unsigned long);
+
+/* file.c */
+extern int ext2_read (struct inode *, struct file *, char *, int);
+extern int ext2_write (struct inode *, struct file *, char *, int);
+
+/* fsync.c */
+extern int ext2_sync_file (struct inode *, struct file *);
+
+/* ialloc.c */
+extern struct inode * ext2_new_inode (const struct inode *, int);
+extern void ext2_free_inode (struct inode *);
+extern unsigned long ext2_count_free_inodes (struct super_block *);
+extern void ext2_check_inodes_bitmap (struct super_block *);
+
+/* inode.c */
+extern int ext2_bmap (struct inode *, int);
+
+extern struct buffer_head * ext2_getblk (struct inode *, long, int, int *);
+extern struct buffer_head * ext2_bread (struct inode *, int, int, int *);
+
+extern int ext2_getcluster (struct inode * inode, long block);
+extern void ext2_read_inode (struct inode *);
+extern void ext2_write_inode (struct inode *);
+extern void ext2_put_inode (struct inode *);
+extern int ext2_sync_inode (struct inode *);
+extern void ext2_discard_prealloc (struct inode *);
+
+/* ioctl.c */
+extern int ext2_ioctl (struct inode *, struct file *, unsigned int,
+		       unsigned long);
+
+/* namei.c */
+extern int ext2_open (struct inode *, struct file *);
+extern void ext2_release (struct inode *, struct file *);
+extern int ext2_lookup (struct inode *,const char *, int, struct inode **);
+extern int ext2_create (struct inode *,const char *, int, int,
+			struct inode **);
+extern int ext2_mkdir (struct inode *, const char *, int, int);
+extern int ext2_rmdir (struct inode *, const char *, int);
+extern int ext2_unlink (struct inode *, const char *, int);
+extern int ext2_symlink (struct inode *, const char *, int, const char *);
+extern int ext2_link (struct inode *, struct inode *, const char *, int);
+extern int ext2_mknod (struct inode *, const char *, int, int, int);
+extern int ext2_rename (struct inode *, const char *, int,
+			struct inode *, const char *, int);
+
+/* super.c */
+extern void ext2_error (struct super_block *, const char *, const char *, ...)
+	__attribute__ ((format (printf, 3, 4)));
+extern NORET_TYPE void ext2_panic (struct super_block *, const char *,
+				   const char *, ...)
+	__attribute__ ((NORET_AND format (printf, 3, 4)));
+extern void ext2_warning (struct super_block *, const char *, const char *, ...)
+	__attribute__ ((format (printf, 3, 4)));
+extern void ext2_put_super (struct super_block *);
+extern void ext2_write_super (struct super_block *);
+extern int ext2_remount (struct super_block *, int *, char *);
+extern struct super_block * ext2_read_super (struct super_block *,void *,int);
+extern void ext2_statfs (struct super_block *, struct statfs *);
+
+/* truncate.c */
+extern void ext2_truncate (struct inode *);
+
+/*
+ * Inodes and files operations
+ */
+
+/* dir.c */
+extern struct inode_operations ext2_dir_inode_operations;
+
+/* file.c */
+extern struct inode_operations ext2_file_inode_operations;
+
+/* symlink.c */
+extern struct inode_operations ext2_symlink_inode_operations;
+
+#endif	/* __KERNEL__ */
+
+#endif	/* _LINUX_EXT2_FS_H */