64 # define ea_idebug(inode, f...) do { \  argument
66 			inode->i_sb->s_id, inode->i_ino); \
79 # define ea_idebug(inode, fmt, ...)	no_printk(fmt, ##__VA_ARGS__)  argument
84 static struct buffer_head *ext4_xattr_cache_find(struct inode *,
117 #define EXT4_GET_MB_CACHE(inode)	(((struct ext4_sb_info *) \  argument
118 				inode->i_sb->s_fs_info)->s_mb_cache)
120 static __le32 ext4_xattr_block_csum(struct inode *inode,  in ext4_xattr_block_csum()  argument
124 	struct ext4_sb_info *sbi = EXT4_SB(inode->i_sb);  in ext4_xattr_block_csum()
134 			   EXT4_BLOCK_SIZE(inode->i_sb));  in ext4_xattr_block_csum()
140 static int ext4_xattr_block_csum_verify(struct inode *inode,  in ext4_xattr_block_csum_verify()  argument
144 	if (ext4_has_metadata_csum(inode->i_sb) &&  in ext4_xattr_block_csum_verify()
145 	    (hdr->h_checksum != ext4_xattr_block_csum(inode, block_nr, hdr)))  in ext4_xattr_block_csum_verify()
150 static void ext4_xattr_block_csum_set(struct inode *inode,  in ext4_xattr_block_csum_set()  argument
154 	if (!ext4_has_metadata_csum(inode->i_sb))  in ext4_xattr_block_csum_set()
157 	hdr->h_checksum = ext4_xattr_block_csum(inode, block_nr, hdr);  in ext4_xattr_block_csum_set()
161 						struct inode *inode,  in ext4_handle_dirty_xattr_block()  argument
164 	ext4_xattr_block_csum_set(inode, bh->b_blocknr, BHDR(bh));  in ext4_handle_dirty_xattr_block()
165 	return ext4_handle_dirty_metadata(handle, inode, bh);  in ext4_handle_dirty_xattr_block()
216 ext4_xattr_check_block(struct inode *inode, struct buffer_head *bh)  in ext4_xattr_check_block()  argument
226 	if (!ext4_xattr_block_csum_verify(inode, bh->b_blocknr, BHDR(bh)))  in ext4_xattr_check_block()
274 ext4_xattr_block_get(struct inode *inode, int name_index, const char *name,  in ext4_xattr_block_get()  argument
281 	struct mb_cache *ext4_mb_cache = EXT4_GET_MB_CACHE(inode);  in ext4_xattr_block_get()
283 	ea_idebug(inode, "name=%d.%s, buffer=%p, buffer_size=%ld",  in ext4_xattr_block_get()
287 	if (!EXT4_I(inode)->i_file_acl)  in ext4_xattr_block_get()
289 	ea_idebug(inode, "reading block %llu",  in ext4_xattr_block_get()
290 		  (unsigned long long)EXT4_I(inode)->i_file_acl);  in ext4_xattr_block_get()
291 	bh = sb_bread(inode->i_sb, EXT4_I(inode)->i_file_acl);  in ext4_xattr_block_get()
296 	if (ext4_xattr_check_block(inode, bh)) {  in ext4_xattr_block_get()
298 		EXT4_ERROR_INODE(inode, "bad block %llu",  in ext4_xattr_block_get()
299 				 EXT4_I(inode)->i_file_acl);  in ext4_xattr_block_get()
326 ext4_xattr_ibody_get(struct inode *inode, int name_index, const char *name,  in ext4_xattr_ibody_get()  argument
337 	if (!ext4_test_inode_state(inode, EXT4_STATE_XATTR))  in ext4_xattr_ibody_get()
339 	error = ext4_get_inode_loc(inode, &iloc);  in ext4_xattr_ibody_get()
343 	header = IHDR(inode, raw_inode);  in ext4_xattr_ibody_get()
345 	end = (void *)raw_inode + EXT4_SB(inode->i_sb)->s_inode_size;  in ext4_xattr_ibody_get()
379 ext4_xattr_get(struct inode *inode, int name_index, const char *name,  in ext4_xattr_get()  argument
387 	down_read(&EXT4_I(inode)->xattr_sem);  in ext4_xattr_get()
388 	error = ext4_xattr_ibody_get(inode, name_index, name, buffer,  in ext4_xattr_get()
391 		error = ext4_xattr_block_get(inode, name_index, name, buffer,  in ext4_xattr_get()
393 	up_read(&EXT4_I(inode)->xattr_sem);  in ext4_xattr_get()
426 	struct inode *inode = d_inode(dentry);  in ext4_xattr_block_list()  local
429 	struct mb_cache *ext4_mb_cache = EXT4_GET_MB_CACHE(inode);  in ext4_xattr_block_list()
431 	ea_idebug(inode, "buffer=%p, buffer_size=%ld",  in ext4_xattr_block_list()
435 	if (!EXT4_I(inode)->i_file_acl)  in ext4_xattr_block_list()
437 	ea_idebug(inode, "reading block %llu",  in ext4_xattr_block_list()
438 		  (unsigned long long)EXT4_I(inode)->i_file_acl);  in ext4_xattr_block_list()
439 	bh = sb_bread(inode->i_sb, EXT4_I(inode)->i_file_acl);  in ext4_xattr_block_list()
445 	if (ext4_xattr_check_block(inode, bh)) {  in ext4_xattr_block_list()
446 		EXT4_ERROR_INODE(inode, "bad block %llu",  in ext4_xattr_block_list()
447 				 EXT4_I(inode)->i_file_acl);  in ext4_xattr_block_list()
463 	struct inode *inode = d_inode(dentry);  in ext4_xattr_ibody_list()  local
470 	if (!ext4_test_inode_state(inode, EXT4_STATE_XATTR))  in ext4_xattr_ibody_list()
472 	error = ext4_get_inode_loc(inode, &iloc);  in ext4_xattr_ibody_list()
476 	header = IHDR(inode, raw_inode);  in ext4_xattr_ibody_list()
477 	end = (void *)raw_inode + EXT4_SB(inode->i_sb)->s_inode_size;  in ext4_xattr_ibody_list()
543 ext4_xattr_release_block(handle_t *handle, struct inode *inode,  in ext4_xattr_release_block()  argument
548 	struct mb_cache *ext4_mb_cache = EXT4_GET_MB_CACHE(inode);  in ext4_xattr_release_block()
563 		ext4_free_blocks(handle, inode, bh, 0, 1,  in ext4_xattr_release_block()
581 			error = ext4_handle_dirty_xattr_block(handle, inode,  in ext4_xattr_release_block()
585 			error = ext4_handle_dirty_xattr_block(handle, inode,  in ext4_xattr_release_block()
587 		if (IS_SYNC(inode))  in ext4_xattr_release_block()
589 		dquot_free_block(inode, EXT4_C2B(EXT4_SB(inode->i_sb), 1));  in ext4_xattr_release_block()
594 	ext4_std_error(inode->i_sb, error);  in ext4_xattr_release_block()
733 ext4_xattr_block_find(struct inode *inode, struct ext4_xattr_info *i,  in ext4_xattr_block_find()  argument
736 	struct super_block *sb = inode->i_sb;  in ext4_xattr_block_find()
739 	ea_idebug(inode, "name=%d.%s, value=%p, value_len=%ld",  in ext4_xattr_block_find()
742 	if (EXT4_I(inode)->i_file_acl) {  in ext4_xattr_block_find()
744 		bs->bh = sb_bread(sb, EXT4_I(inode)->i_file_acl);  in ext4_xattr_block_find()
751 		if (ext4_xattr_check_block(inode, bs->bh)) {  in ext4_xattr_block_find()
752 			EXT4_ERROR_INODE(inode, "bad block %llu",  in ext4_xattr_block_find()
753 					 EXT4_I(inode)->i_file_acl);  in ext4_xattr_block_find()
775 ext4_xattr_block_set(handle_t *handle, struct inode *inode,  in ext4_xattr_block_set()  argument
779 	struct super_block *sb = inode->i_sb;  in ext4_xattr_block_set()
784 	struct mb_cache *ext4_mb_cache = EXT4_GET_MB_CACHE(inode);  in ext4_xattr_block_set()
818 								      inode,  in ext4_xattr_block_set()
867 		new_bh = ext4_xattr_cache_find(inode, header(s->base), &ce);  in ext4_xattr_block_set()
875 				error = dquot_alloc_block(inode,  in ext4_xattr_block_set()
890 								      inode,  in ext4_xattr_block_set()
907 						EXT4_I(inode)->i_block_group);  in ext4_xattr_block_set()
910 			if (!(ext4_test_inode_flag(inode, EXT4_INODE_EXTENTS)))  in ext4_xattr_block_set()
913 			block = ext4_new_meta_blocks(handle, inode, goal, 0,  in ext4_xattr_block_set()
918 			if (!(ext4_test_inode_flag(inode, EXT4_INODE_EXTENTS)))  in ext4_xattr_block_set()
921 			ea_idebug(inode, "creating block %llu",  in ext4_xattr_block_set()
928 				ext4_free_blocks(handle, inode, NULL, block, 1,  in ext4_xattr_block_set()
944 							      inode, new_bh);  in ext4_xattr_block_set()
951 	EXT4_I(inode)->i_file_acl = new_bh ? new_bh->b_blocknr : 0;  in ext4_xattr_block_set()
955 		ext4_xattr_release_block(handle, inode, bs->bh);  in ext4_xattr_block_set()
968 	dquot_free_block(inode, EXT4_C2B(EXT4_SB(sb), 1));  in ext4_xattr_block_set()
972 	EXT4_ERROR_INODE(inode, "bad block %llu",  in ext4_xattr_block_set()
973 			 EXT4_I(inode)->i_file_acl);  in ext4_xattr_block_set()
979 int ext4_xattr_ibody_find(struct inode *inode, struct ext4_xattr_info *i,  in ext4_xattr_ibody_find()  argument
986 	if (EXT4_I(inode)->i_extra_isize == 0)  in ext4_xattr_ibody_find()
989 	header = IHDR(inode, raw_inode);  in ext4_xattr_ibody_find()
992 	is->s.end = (void *)raw_inode + EXT4_SB(inode->i_sb)->s_inode_size;  in ext4_xattr_ibody_find()
993 	if (ext4_test_inode_state(inode, EXT4_STATE_XATTR)) {  in ext4_xattr_ibody_find()
1009 int ext4_xattr_ibody_inline_set(handle_t *handle, struct inode *inode,  in ext4_xattr_ibody_inline_set()  argument
1017 	if (EXT4_I(inode)->i_extra_isize == 0)  in ext4_xattr_ibody_inline_set()
1022 		    ext4_has_inline_data(inode)) {  in ext4_xattr_ibody_inline_set()
1023 			error = ext4_try_to_evict_inline_data(handle, inode,  in ext4_xattr_ibody_inline_set()
1028 			error = ext4_xattr_ibody_find(inode, i, is);  in ext4_xattr_ibody_inline_set()
1036 	header = IHDR(inode, ext4_raw_inode(&is->iloc));  in ext4_xattr_ibody_inline_set()
1039 		ext4_set_inode_state(inode, EXT4_STATE_XATTR);  in ext4_xattr_ibody_inline_set()
1042 		ext4_clear_inode_state(inode, EXT4_STATE_XATTR);  in ext4_xattr_ibody_inline_set()
1047 static int ext4_xattr_ibody_set(handle_t *handle, struct inode *inode,  in ext4_xattr_ibody_set()  argument
1055 	if (EXT4_I(inode)->i_extra_isize == 0)  in ext4_xattr_ibody_set()
1060 	header = IHDR(inode, ext4_raw_inode(&is->iloc));  in ext4_xattr_ibody_set()
1063 		ext4_set_inode_state(inode, EXT4_STATE_XATTR);  in ext4_xattr_ibody_set()
1066 		ext4_clear_inode_state(inode, EXT4_STATE_XATTR);  in ext4_xattr_ibody_set()
1084 ext4_xattr_set_handle(handle_t *handle, struct inode *inode, int name_index,  in ext4_xattr_set_handle()  argument
1108 	down_write(&EXT4_I(inode)->xattr_sem);  in ext4_xattr_set_handle()
1109 	no_expand = ext4_test_inode_state(inode, EXT4_STATE_NO_EXPAND);  in ext4_xattr_set_handle()
1110 	ext4_set_inode_state(inode, EXT4_STATE_NO_EXPAND);  in ext4_xattr_set_handle()
1112 	error = ext4_reserve_inode_write(handle, inode, &is.iloc);  in ext4_xattr_set_handle()
1116 	if (ext4_test_inode_state(inode, EXT4_STATE_NEW)) {  in ext4_xattr_set_handle()
1118 		memset(raw_inode, 0, EXT4_SB(inode->i_sb)->s_inode_size);  in ext4_xattr_set_handle()
1119 		ext4_clear_inode_state(inode, EXT4_STATE_NEW);  in ext4_xattr_set_handle()
1122 	error = ext4_xattr_ibody_find(inode, &i, &is);  in ext4_xattr_set_handle()
1126 		error = ext4_xattr_block_find(inode, &i, &bs);  in ext4_xattr_set_handle()
1143 			error = ext4_xattr_ibody_set(handle, inode, &i, &is);  in ext4_xattr_set_handle()
1145 			error = ext4_xattr_block_set(handle, inode, &i, &bs);  in ext4_xattr_set_handle()
1147 		error = ext4_xattr_ibody_set(handle, inode, &i, &is);  in ext4_xattr_set_handle()
1150 			error = ext4_xattr_block_set(handle, inode, &i, &bs);  in ext4_xattr_set_handle()
1152 			if (EXT4_I(inode)->i_file_acl && !bs.s.base) {  in ext4_xattr_set_handle()
1153 				error = ext4_xattr_block_find(inode, &i, &bs);  in ext4_xattr_set_handle()
1157 			error = ext4_xattr_block_set(handle, inode, &i, &bs);  in ext4_xattr_set_handle()
1162 				error = ext4_xattr_ibody_set(handle, inode, &i,  in ext4_xattr_set_handle()
1168 		ext4_xattr_update_super_block(handle, inode->i_sb);  in ext4_xattr_set_handle()
1169 		inode->i_ctime = ext4_current_time(inode);  in ext4_xattr_set_handle()
1171 			ext4_clear_inode_state(inode, EXT4_STATE_NO_EXPAND);  in ext4_xattr_set_handle()
1172 		error = ext4_mark_iloc_dirty(handle, inode, &is.iloc);  in ext4_xattr_set_handle()
1178 		if (IS_SYNC(inode))  in ext4_xattr_set_handle()
1186 		ext4_clear_inode_state(inode, EXT4_STATE_NO_EXPAND);  in ext4_xattr_set_handle()
1187 	up_write(&EXT4_I(inode)->xattr_sem);  in ext4_xattr_set_handle()
1200 ext4_xattr_set(struct inode *inode, int name_index, const char *name,  in ext4_xattr_set()  argument
1205 	int credits = ext4_jbd2_credits_xattr(inode);  in ext4_xattr_set()
1208 	handle = ext4_journal_start(inode, EXT4_HT_XATTR, credits);  in ext4_xattr_set()
1214 		error = ext4_xattr_set_handle(handle, inode, name_index, name,  in ext4_xattr_set()
1218 		    ext4_should_retry_alloc(inode->i_sb, &retries))  in ext4_xattr_set()
1256 int ext4_expand_extra_isize_ea(struct inode *inode, int new_extra_isize,  in ext4_expand_extra_isize_ea()  argument
1269 	int s_min_extra_isize = le16_to_cpu(EXT4_SB(inode->i_sb)->s_es->s_min_extra_isize);  in ext4_expand_extra_isize_ea()
1271 	down_write(&EXT4_I(inode)->xattr_sem);  in ext4_expand_extra_isize_ea()
1273 	if (EXT4_I(inode)->i_extra_isize >= new_extra_isize) {  in ext4_expand_extra_isize_ea()
1274 		up_write(&EXT4_I(inode)->xattr_sem);  in ext4_expand_extra_isize_ea()
1278 	header = IHDR(inode, raw_inode);  in ext4_expand_extra_isize_ea()
1287 	end = (void *)raw_inode + EXT4_SB(inode->i_sb)->s_inode_size;  in ext4_expand_extra_isize_ea()
1295 		ext4_xattr_shift_entries(entry,	EXT4_I(inode)->i_extra_isize  in ext4_expand_extra_isize_ea()
1299 				inode->i_sb->s_blocksize);  in ext4_expand_extra_isize_ea()
1300 		EXT4_I(inode)->i_extra_isize = new_extra_isize;  in ext4_expand_extra_isize_ea()
1309 	if (EXT4_I(inode)->i_file_acl) {  in ext4_expand_extra_isize_ea()
1310 		bh = sb_bread(inode->i_sb, EXT4_I(inode)->i_file_acl);  in ext4_expand_extra_isize_ea()
1314 		if (ext4_xattr_check_block(inode, bh)) {  in ext4_expand_extra_isize_ea()
1315 			EXT4_ERROR_INODE(inode, "bad block %llu",  in ext4_expand_extra_isize_ea()
1316 					 EXT4_I(inode)->i_file_acl);  in ext4_expand_extra_isize_ea()
1336 		free = inode->i_sb->s_blocksize;  in ext4_expand_extra_isize_ea()
1413 		error = ext4_get_inode_loc(inode, &is->iloc);  in ext4_expand_extra_isize_ea()
1417 		error = ext4_xattr_ibody_find(inode, &i, is);  in ext4_expand_extra_isize_ea()
1422 		error = ext4_xattr_ibody_set(handle, inode, &i, is);  in ext4_expand_extra_isize_ea()
1432 		ext4_xattr_shift_entries(entry, EXT4_I(inode)->i_extra_isize -  in ext4_expand_extra_isize_ea()
1436 			inode->i_sb->s_blocksize);  in ext4_expand_extra_isize_ea()
1440 		EXT4_I(inode)->i_extra_isize = extra_isize;  in ext4_expand_extra_isize_ea()
1445 		error = ext4_xattr_block_find(inode, &i, bs);  in ext4_expand_extra_isize_ea()
1450 		error = ext4_xattr_block_set(handle, inode, &i, bs);  in ext4_expand_extra_isize_ea()
1462 	up_write(&EXT4_I(inode)->xattr_sem);  in ext4_expand_extra_isize_ea()
1473 	up_write(&EXT4_I(inode)->xattr_sem);  in ext4_expand_extra_isize_ea()
1487 ext4_xattr_delete_inode(handle_t *handle, struct inode *inode)  in ext4_xattr_delete_inode()  argument
1491 	if (!EXT4_I(inode)->i_file_acl)  in ext4_xattr_delete_inode()
1493 	bh = sb_bread(inode->i_sb, EXT4_I(inode)->i_file_acl);  in ext4_xattr_delete_inode()
1495 		EXT4_ERROR_INODE(inode, "block %llu read error",  in ext4_xattr_delete_inode()
1496 				 EXT4_I(inode)->i_file_acl);  in ext4_xattr_delete_inode()
1501 		EXT4_ERROR_INODE(inode, "bad block %llu",  in ext4_xattr_delete_inode()
1502 				 EXT4_I(inode)->i_file_acl);  in ext4_xattr_delete_inode()
1505 	ext4_xattr_release_block(handle, inode, bh);  in ext4_xattr_delete_inode()
1506 	EXT4_I(inode)->i_file_acl = 0;  in ext4_xattr_delete_inode()
1605 ext4_xattr_cache_find(struct inode *inode, struct ext4_xattr_header *header,  in ext4_xattr_cache_find()  argument
1610 	struct mb_cache *ext4_mb_cache = EXT4_GET_MB_CACHE(inode);  in ext4_xattr_cache_find()
1614 	ea_idebug(inode, "looking for cached blocks [%x]", (int)hash);  in ext4_xattr_cache_find()
1616 	ce = mb_cache_entry_find_first(ext4_mb_cache, inode->i_sb->s_bdev,  in ext4_xattr_cache_find()
1626 		bh = sb_bread(inode->i_sb, ce->e_block);  in ext4_xattr_cache_find()
1628 			EXT4_ERROR_INODE(inode, "block %lu read error",  in ext4_xattr_cache_find()
1632 			ea_idebug(inode, "block %lu refcount %d>=%d",  in ext4_xattr_cache_find()
1641 		ce = mb_cache_entry_find_next(ce, inode->i_sb->s_bdev, hash);  in ext4_xattr_cache_find()