xref: /openbmc/linux/fs/xfs/libxfs/xfs_inode_buf.h (revision cf28e17c)
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  * Inode location information.  Stored in the inode and passed to
14  * xfs_imap_to_bp() to get a buffer and dinode for a given inode.
15  */
16 struct xfs_imap {
17 	xfs_daddr_t	im_blkno;	/* starting BB of inode chunk */
18 	unsigned short	im_len;		/* length in BBs of inode chunk */
19 	unsigned short	im_boffset;	/* inode offset in block in bytes */
20 };
21 
22 int	xfs_imap_to_bp(struct xfs_mount *mp, struct xfs_trans *tp,
23 		       struct xfs_imap *imap, struct xfs_buf **bpp);
24 void	xfs_dinode_calc_crc(struct xfs_mount *mp, struct xfs_dinode *dip);
25 void	xfs_inode_to_disk(struct xfs_inode *ip, struct xfs_dinode *to,
26 			  xfs_lsn_t lsn);
27 int	xfs_inode_from_disk(struct xfs_inode *ip, struct xfs_dinode *from);
28 
29 xfs_failaddr_t xfs_dinode_verify(struct xfs_mount *mp, xfs_ino_t ino,
30 			   struct xfs_dinode *dip);
31 xfs_failaddr_t xfs_inode_validate_extsize(struct xfs_mount *mp,
32 		uint32_t extsize, uint16_t mode, uint16_t flags);
33 xfs_failaddr_t xfs_inode_validate_cowextsize(struct xfs_mount *mp,
34 		uint32_t cowextsize, uint16_t mode, uint16_t flags,
35 		uint64_t flags2);
36 
xfs_inode_encode_bigtime(struct timespec64 tv)37 static inline uint64_t xfs_inode_encode_bigtime(struct timespec64 tv)
38 {
39 	return xfs_unix_to_bigtime(tv.tv_sec) * NSEC_PER_SEC + tv.tv_nsec;
40 }
41 
42 struct timespec64 xfs_inode_from_disk_ts(struct xfs_dinode *dip,
43 		const xfs_timestamp_t ts);
44 
45 static inline bool
xfs_dinode_good_version(struct xfs_mount * mp,uint8_t version)46 xfs_dinode_good_version(struct xfs_mount *mp, uint8_t version)
47 {
48 	if (xfs_has_v3inodes(mp))
49 		return version == 3;
50 	return version == 1 || version == 2;
51 }
52 
53 
54 #endif	/* __XFS_INODE_BUF_H__ */
55