Differential D10460 Diff 27887 sys/fs/ext2fs/ext2_extattr.h

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sys/fs/ext2fs/ext2_extattr.h

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	#define _FS_EXT2FS_EXT2_EXTARTTR_H_	#define _FS_EXT2FS_EXT2_EXTARTTR_H_

	/* Linux xattr name indexes */	/* Linux xattr name indexes */
	#define EXT4_XATTR_INDEX_USER 1	#define EXT4_XATTR_INDEX_USER 1
	#define EXT4_XATTR_INDEX_POSIX_ACL_ACCESS 2	#define EXT4_XATTR_INDEX_POSIX_ACL_ACCESS 2
	#define EXT4_XATTR_INDEX_POSIX_ACL_DEFAULT 3	#define EXT4_XATTR_INDEX_POSIX_ACL_DEFAULT 3
	#define EXT4_XATTR_INDEX_TRUSTED 4	#define EXT4_XATTR_INDEX_TRUSTED 4
	#define EXT4_XATTR_INDEX_LUSTRE 5	#define EXT4_XATTR_INDEX_LUSTRE 5
	#define EXT4_XATTR_INDEX_SECURITY 6	#define EXT4_XATTR_INDEX_SECURITY 6
	#define EXT4_XATTR_INDEX_SYSTEM 7	#define EXT4_XATTR_INDEX_SYSTEM 7
	#define EXT4_XATTR_INDEX_RICHACL 8	#define EXT4_XATTR_INDEX_RICHACL 8
	#define EXT4_XATTR_INDEX_ENCRYPTION 9	#define EXT4_XATTR_INDEX_ENCRYPTION 9

	/* Magic value in attribute blocks */	/* Magic value in attribute blocks */
	#define EXTATTR_MAGIC 0xEA020000	#define EXTATTR_MAGIC 0xEA020000

		/* Max EA name length */
		#define EXT2_EXTATTR_NAMELEN_MAX 255

		/* EA hash constants */
		#define EXT2_EXTATTR_NAME_HASH_SHIFT 5
		#define EXT2_EXTATTR_VALUE_HASH_SHIFT 16
		#define EXT2_EXTATTR_BLOCK_HASH_SHIFT 16

	struct ext2fs_extattr_header {	struct ext2fs_extattr_header {
	int32_t h_magic; /* magic number for identification */	int32_t h_magic; /* magic number for identification */
	int32_t h_refcount; /* reference count */	int32_t h_refcount; /* reference count */
	int32_t h_blocks; /* number of disk blocks used */	int32_t h_blocks; /* number of disk blocks used */
	int32_t h_hash; /* hash value of all attributes */	int32_t h_hash; /* hash value of all attributes */
	uint32_t h_reserved[4]; /* zero right now */	uint32_t h_reserved[4]; /* zero right now */
	};	};

	struct ext2fs_extattr_dinode_header {	struct ext2fs_extattr_dinode_header {
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	};	};

	struct ext2fs_extattr_entry {	struct ext2fs_extattr_entry {
	uint8_t e_name_len; /* length of name */	uint8_t e_name_len; /* length of name */
	uint8_t e_name_index; /* attribute name index */	uint8_t e_name_index; /* attribute name index */
	uint16_t e_value_offs; /* offset in disk block of value */	uint16_t e_value_offs; /* offset in disk block of value */
	uint32_t e_value_block; /* disk block attribute is stored on (n/i) */	uint32_t e_value_block; /* disk block attribute is stored on (n/i) */
	uint32_t e_value_size; /* size of attribute value */	uint32_t e_value_size; /* size of attribute value */
	uint32_t e_hash; /* hash value of name and value */	uint32_t e_hash; /* hash value of name and value */
	char e_name[0]; /* attribute name */	char e_name[0]; /* attribute name */
	};	};

	#define EXT2_IHDR(inode, raw_inode) \
	((struct ext4_xattr_ibody_header *) \
	((void *)raw_inode + \
	EXT4_GOOD_OLD_INODE_SIZE + \
	EXT4_I(inode)->i_extra_isize))

	#define EXT2_IFIRST(hdr) ((struct ext2fs_extattr_entry *)((hdr)+1))	#define EXT2_IFIRST(hdr) ((struct ext2fs_extattr_entry *)((hdr)+1))

	#define EXT2_HDR(bh) ((struct ext2fs_extattr_header *)((bh)->b_data))	#define EXT2_HDR(bh) ((struct ext2fs_extattr_header *)((bh)->b_data))
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	(((name_len) + EXT2_EXTATTR_ROUND + \	(((name_len) + EXT2_EXTATTR_ROUND + \
	sizeof(struct ext2fs_extattr_entry)) & ~EXT2_EXTATTR_ROUND)	sizeof(struct ext2fs_extattr_entry)) & ~EXT2_EXTATTR_ROUND)

		#define EXT2_EXTATTR_SIZE(size) \
		(((size) + EXT2_EXTATTR_ROUND) & ~EXT2_EXTATTR_ROUND)

	#define EXT2_EXTATTR_NEXT(entry) \	#define EXT2_EXTATTR_NEXT(entry) \
	( (struct ext2fs_extattr_entry *)( \	( (struct ext2fs_extattr_entry *)( \
	(char *)(entry) + EXT2_EXTATTR_LEN((entry)->e_name_len)) )	(char *)(entry) + EXT2_EXTATTR_LEN((entry)->e_name_len)) )

	int ext2_extattr_inode_list(struct inode *ip, int attrnamespace,
	struct uio uio, size_t size);

	int ext2_extattr_block_list(struct inode *ip, int attrnamespace,	#define EXT2_EXTATTR_INODE(ip) \
	struct uio uio, size_t size);	((EXT2_INODE_SIZE(ip->i_e2fs) != E2FS_REV0_INODE_SIZE) && \
		(ip->i_ea_len != ip->i_e2fs->e2fs_bsize))

		#define EXT2_EXTATTR_BLOCK(ip) (1)
		#define EXT2_EXTATTR_INODE_SIZE(ip) (EXT2_EXTATTR_INODE(ip) ? \
		(ip->i_ea_len - ip->i_e2fs->e2fs_bsize) : 0)

		#define EXT2_EXTATTR_BLOCK_SIZE(ip) (ip->i_e2fs->e2fs_bsize)
		#define EXT2_EXTATTR_INODE_HDR(ip, addr) \
		(EXT2_EXTATTR_INODE(ip) ? \
		((struct ext2fs_extattr_dinode_header *)addr) : NULL)

		#define EXT2_EXTATTR_BLOCK_HDR(ip, addr) (EXT2_EXTATTR_BLOCK(ip) ? \
		(EXT2_EXTATTR_INODE(ip) ? \
		((struct ext2fs_extattr_header *)(addr + \
		EXT2_EXTATTR_INODE_SIZE(ip))) : ((struct ext2fs_extattr_header *) \
		addr)) : NULL)

		int ext2_extattr_check(struct ext2fs_extattr_entry eae, char end);
		void ext2_extattr_delete_entry(char off, struct ext2fs_extattr_entry feae,
		struct ext2fs_extattr_entry eae, char end);

		int ext2_extattr_free(struct inode *ip);
		int ext2_extattr_get_size(struct ext2fs_extattr_entry *feae,
		struct ext2fs_extattr_entry *eeae, int hdr_size,
		int name_len, int new_size);

		void ext2_extattr_rehash(struct ext2fs_extattr_header *hdr,
		struct ext2fs_extattr_entry *eae);

		void ext2_extattr_set_exist_entry(char off, struct ext2fs_extattr_entry feae,
		struct ext2fs_extattr_entry eae, char end, struct uio *uio);

	int ext2_extattr_inode_get(struct inode *ip, int attrnamespace,	struct ext2fs_extattr_entry ext2_extattr_set_new_entry(char off,
	const char name, struct uio uio, size_t *size);	struct ext2fs_extattr_entry feae, const char name,
		int attrnamespace, char end, struct uio uio);

	int ext2_extattr_block_get(struct inode *ip, int attrnamespace,	int ext2_extattr_index_to_bsd(int index);
	const char name, struct uio uio, size_t *size);	int ext2_extattr_valid_attrname(int attrnamespace, const char *attrname);

	#endif /* !_FS_EXT2FS_EXT2_EXTARTTR_H_ */	#endif /* !_FS_EXT2FS_EXT2_EXTARTTR_H_ */
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