귀하의 질문에 대한 답변은 파일 시스템에 따라 다릅니다. 예를 들어 ext3의 경우 fs / ext3 / xattr.c를 살펴보면 다음 설명이 포함됩니다.
16 /*
17 * Extended attributes are stored directly in inodes (on file systems with
18 * inodes bigger than 128 bytes) and on additional disk blocks. The i_file_acl
19
* field contains the block number if an inode uses an additional block. All
20 * attributes must fit in the inode and one additional block. Blocks that
21 * contain the identical set of attributes may be shared among several inodes.
22 * Identical blocks are detected by keeping a cache of blocks that have
23 * recently been accessed.
24 *
25 * The attributes in inodes and on blocks have a different header; the entries
26 * are stored in the same format:
27 *
28 * +------------------+
29 * | header |
30 * | entry 1 | |
31 * | entry 2 | | growing downwards
32 * | entry 3 | v
33 * | four null bytes |
34 * | . . . |
35 * | value 1 | ^
36 * | value 3 | | growing upwards
37 * | value 2 | |
38 * +------------------+
39 *
40 * The header is followed by multiple entry descriptors. In disk blocks, the
41 * entry descriptors are kept sorted. In inodes, they are unsorted. The
42 * attribute values are aligned to the end of the block in no specific order.
43 *
44 * Locking strategy
45 * ----------------
46 * EXT3_I(inode)->i_file_acl is protected by EXT3_I(inode)->xattr_sem.
47 * EA blocks are only changed if they are exclusive to an inode, so
48 * holding xattr_sem also means that nothing but the EA block's reference
49 * count can change. Multiple writers to the same block are synchronized
50 * by the buffer lock.
51 */
은 "어떻게 속성이 연결되어"질문에 대해서는, 링크는 아이 노드는 참조 확장 된 속성에 대한 링크를 가지고, 다른 방법으로 라운드에 EXT3_XATTR_NEXT
와 ext3_xattr_list_entries
각각 xattr.h 및 xattr.c에.
요약하면, 속성은 inode에 연결되어 있으며 fs에 따라 달라집니다. 따라서 CD ROM을 굽거나 파일을 전자 메일로 보낼 때 속성이 손실됩니다.