1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * Copyright (c) 2000-2003,2005 Silicon Graphics, Inc.
4 * All Rights Reserved.
5 */
6 #ifndef __XFS_INODE_BUF_H__
7 #define __XFS_INODE_BUF_H__
8
9 struct xfs_inode;
10 struct xfs_dinode;
11
12 /*
13 * In memory representation of the XFS inode. This is held in the in-core struct
14 * xfs_inode and represents the current on disk values but the structure is not
15 * in on-disk format. That is, this structure is always translated to on-disk
16 * format specific structures at the appropriate time.
17 */
18 struct xfs_icdinode {
19 uint16_t di_flushiter; /* incremented on flush */
20 prid_t di_projid; /* owner's project id */
21 xfs_fsize_t di_size; /* number of bytes in file */
22 xfs_rfsblock_t di_nblocks; /* # of direct & btree blocks used */
23 xfs_extlen_t di_extsize; /* basic/minimum extent size for file */
24 uint8_t di_forkoff; /* attr fork offs, <<3 for 64b align */
25 uint32_t di_dmevmask; /* DMIG event mask */
26 uint16_t di_dmstate; /* DMIG state info */
27 uint16_t di_flags; /* random flags, XFS_DIFLAG_... */
28
29 uint64_t di_flags2; /* more random flags */
30 uint32_t di_cowextsize; /* basic cow extent size for file */
31
32 struct timespec64 di_crtime; /* time created */
33 };
34
xfs_icdinode_has_bigtime(const struct xfs_icdinode * icd)35 static inline bool xfs_icdinode_has_bigtime(const struct xfs_icdinode *icd)
36 {
37 return icd->di_flags2 & XFS_DIFLAG2_BIGTIME;
38 }
39
40 /*
41 * Inode location information. Stored in the inode and passed to
42 * xfs_imap_to_bp() to get a buffer and dinode for a given inode.
43 */
44 struct xfs_imap {
45 xfs_daddr_t im_blkno; /* starting BB of inode chunk */
46 unsigned short im_len; /* length in BBs of inode chunk */
47 unsigned short im_boffset; /* inode offset in block in bytes */
48 };
49
50 int xfs_imap_to_bp(struct xfs_mount *, struct xfs_trans *,
51 struct xfs_imap *, struct xfs_dinode **,
52 struct xfs_buf **, uint);
53 void xfs_dinode_calc_crc(struct xfs_mount *, struct xfs_dinode *);
54 void xfs_inode_to_disk(struct xfs_inode *ip, struct xfs_dinode *to,
55 xfs_lsn_t lsn);
56 int xfs_inode_from_disk(struct xfs_inode *ip, struct xfs_dinode *from);
57
58 xfs_failaddr_t xfs_dinode_verify(struct xfs_mount *mp, xfs_ino_t ino,
59 struct xfs_dinode *dip);
60 xfs_failaddr_t xfs_inode_validate_extsize(struct xfs_mount *mp,
61 uint32_t extsize, uint16_t mode, uint16_t flags);
62 xfs_failaddr_t xfs_inode_validate_cowextsize(struct xfs_mount *mp,
63 uint32_t cowextsize, uint16_t mode, uint16_t flags,
64 uint64_t flags2);
65
xfs_inode_encode_bigtime(struct timespec64 tv)66 static inline uint64_t xfs_inode_encode_bigtime(struct timespec64 tv)
67 {
68 return xfs_unix_to_bigtime(tv.tv_sec) * NSEC_PER_SEC + tv.tv_nsec;
69 }
70
71 struct timespec64 xfs_inode_from_disk_ts(struct xfs_dinode *dip,
72 const xfs_timestamp_t ts);
73
74 #endif /* __XFS_INODE_BUF_H__ */
75