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 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 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