X-Git-Url: https://git.carlh.net/gitweb/?a=blobdiff_plain;f=include%2Fext4_xattr.h;h=3cd1bcd4b66c5af1e85c33ca1c3d166cb933b3d1;hb=dbcf9937ca2a64604133b2c38ecea906c90f7f2c;hp=f6076d2b8b3fb3858480edb5b62b799d91b90c2e;hpb=a45154a49b743eba4669442e6993c50583329d99;p=lwext4.git

diff --git a/include/ext4_xattr.h b/include/ext4_xattr.h
index f6076d2..3cd1bcd 100644
--- a/include/ext4_xattr.h
+++ b/include/ext4_xattr.h
@@ -43,6 +43,78 @@ extern "C" {
 
 #include "ext4_config.h"
 #include "ext4_types.h"
+#include "ext4_inode.h"
+#include "misc/tree.h"
+#include "misc/queue.h"
+
+struct ext4_xattr_item {
+	/* This attribute should be stored in inode body */
+	bool in_inode;
+	bool is_data;
+
+	uint8_t name_index;
+	char  *name;
+	size_t name_len;
+	void  *data;
+	size_t data_size;
+
+	RB_ENTRY(ext4_xattr_item) node;
+};
+
+struct ext4_xattr_ref {
+	bool block_loaded;
+	struct ext4_block block;
+	struct ext4_inode_ref *inode_ref;
+	bool   dirty;
+	size_t ea_size;
+	size_t block_size_rem;
+	size_t inode_size_rem;
+	struct ext4_fs *fs;
+
+	void *iter_arg;
+	struct ext4_xattr_item *iter_from;
+
+	RB_HEAD(ext4_xattr_tree,
+		ext4_xattr_item) root;
+};
+
+#define EXT4_XATTR_PAD_BITS		2
+#define EXT4_XATTR_PAD		(1<<EXT4_XATTR_PAD_BITS)
+#define EXT4_XATTR_ROUND		(EXT4_XATTR_PAD-1)
+#define EXT4_XATTR_LEN(name_len) \
+	(((name_len) + EXT4_XATTR_ROUND + \
+	sizeof(struct ext4_xattr_entry)) & ~EXT4_XATTR_ROUND)
+#define EXT4_XATTR_NEXT(entry) \
+	((struct ext4_xattr_entry *)( \
+	 (char *)(entry) + EXT4_XATTR_LEN((entry)->e_name_len)))
+#define EXT4_XATTR_SIZE(size) \
+	(((size) + EXT4_XATTR_ROUND) & ~EXT4_XATTR_ROUND)
+#define EXT4_XATTR_NAME(entry) \
+	((char *)((entry) + 1))
+
+#define EXT4_XATTR_IHDR(sb, raw_inode) \
+	((struct ext4_xattr_ibody_header *) \
+		((char *)raw_inode + \
+		EXT4_GOOD_OLD_INODE_SIZE + \
+		ext4_inode_get_extra_isize(sb, raw_inode)))
+#define EXT4_XATTR_IFIRST(hdr) \
+	((struct ext4_xattr_entry *)((hdr)+1))
+
+#define EXT4_XATTR_BHDR(block) \
+	((struct ext4_xattr_header *)((block)->data))
+#define EXT4_XATTR_ENTRY(ptr) \
+	((struct ext4_xattr_entry *)(ptr))
+#define EXT4_XATTR_BFIRST(block) \
+	EXT4_XATTR_ENTRY(EXT4_XATTR_BHDR(block)+1)
+#define EXT4_XATTR_IS_LAST_ENTRY(entry) \
+	(*(uint32_t *)(entry) == 0)
+
+#define EXT4_ZERO_XATTR_VALUE ((void *)-1)
+
+
+#define EXT4_XATTR_ITERATE_CONT 0
+#define EXT4_XATTR_ITERATE_STOP 1
+#define EXT4_XATTR_ITERATE_PAUSE 2
 
 int ext4_fs_get_xattr_ref(struct ext4_fs *fs, struct ext4_inode_ref *inode_ref,
 			  struct ext4_xattr_ref *ref);
@@ -67,7 +139,8 @@ void ext4_fs_xattr_iterate(struct ext4_xattr_ref *ref,
 void ext4_fs_xattr_iterate_reset(struct ext4_xattr_ref *ref);
 
 const char *ext4_extract_xattr_name(const char *full_name, size_t full_name_len,
-			      uint8_t *name_index, size_t *name_len);
+			      uint8_t *name_index, size_t *name_len,
+			      bool *found);
 
 const char *ext4_get_xattr_name_prefix(uint8_t name_index,
 				       size_t *ret_prefix_len);