114 lines
3.3 KiB
C
114 lines
3.3 KiB
C
|
// SPDX-License-Identifier: GPL-2.0
|
||
|
|
/*
|
||
|
|
* Copyright (c) 2000,2005 Silicon Graphics, Inc.
|
||
|
|
* All Rights Reserved.
|
||
|
|
*/
|
||
|
|
#ifndef __XFS_IALLOC_H__
|
||
|
|
#define __XFS_IALLOC_H__
|
||
|
|
|
||
|
|
struct xfs_buf;
|
||
|
|
struct xfs_dinode;
|
||
|
|
struct xfs_imap;
|
||
|
|
struct xfs_mount;
|
||
|
|
struct xfs_trans;
|
||
|
|
struct xfs_btree_cur;
|
||
|
|
struct xfs_perag;
|
||
|
|
|
||
|
|
/* Move inodes in clusters of this size */
|
||
|
|
#define XFS_INODE_BIG_CLUSTER_SIZE 8192
|
||
|
|
|
||
|
|
struct xfs_icluster {
|
||
|
|
bool deleted; /* record is deleted */
|
||
|
|
xfs_ino_t first_ino; /* first inode number */
|
||
|
|
uint64_t alloc; /* inode phys. allocation bitmap for
|
||
|
|
* sparse chunks */
|
||
|
|
};
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Make an inode pointer out of the buffer/offset.
|
||
|
|
*/
|
||
|
|
static inline struct xfs_dinode *
|
||
|
|
xfs_make_iptr(struct xfs_mount *mp, struct xfs_buf *b, int o)
|
||
|
|
{
|
||
|
|
return xfs_buf_offset(b, o << (mp)->m_sb.sb_inodelog);
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Allocate an inode on disk. Mode is used to tell whether the new inode will
|
||
|
|
* need space, and whether it is a directory.
|
||
|
|
*/
|
||
|
|
int xfs_dialloc(struct xfs_trans **tpp, xfs_ino_t parent, umode_t mode,
|
||
|
|
xfs_ino_t *new_ino);
|
||
|
|
|
||
|
|
int xfs_difree(struct xfs_trans *tp, struct xfs_perag *pag,
|
||
|
|
xfs_ino_t ino, struct xfs_icluster *ifree);
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Return the location of the inode in imap, for mapping it into a buffer.
|
||
|
|
*/
|
||
|
|
int
|
||
|
|
xfs_imap(
|
||
|
|
struct xfs_perag *pag,
|
||
|
|
struct xfs_trans *tp, /* transaction pointer */
|
||
|
|
xfs_ino_t ino, /* inode to locate */
|
||
|
|
struct xfs_imap *imap, /* location map structure */
|
||
|
|
uint flags); /* flags for inode btree lookup */
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Log specified fields for the ag hdr (inode section)
|
||
|
|
*/
|
||
|
|
void
|
||
|
|
xfs_ialloc_log_agi(
|
||
|
|
struct xfs_trans *tp, /* transaction pointer */
|
||
|
|
struct xfs_buf *bp, /* allocation group header buffer */
|
||
|
|
uint32_t fields); /* bitmask of fields to log */
|
||
|
|
|
||
|
|
int xfs_read_agi(struct xfs_perag *pag, struct xfs_trans *tp,
|
||
|
|
struct xfs_buf **agibpp);
|
||
|
|
int xfs_ialloc_read_agi(struct xfs_perag *pag, struct xfs_trans *tp,
|
||
|
|
struct xfs_buf **agibpp);
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Lookup a record by ino in the btree given by cur.
|
||
|
|
*/
|
||
|
|
int xfs_inobt_lookup(struct xfs_btree_cur *cur, xfs_agino_t ino,
|
||
|
|
xfs_lookup_t dir, int *stat);
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Get the data from the pointed-to record.
|
||
|
|
*/
|
||
|
|
int xfs_inobt_get_rec(struct xfs_btree_cur *cur,
|
||
|
|
xfs_inobt_rec_incore_t *rec, int *stat);
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Inode chunk initialisation routine
|
||
|
|
*/
|
||
|
|
int xfs_ialloc_inode_init(struct xfs_mount *mp, struct xfs_trans *tp,
|
||
|
|
struct list_head *buffer_list, int icount,
|
||
|
|
xfs_agnumber_t agno, xfs_agblock_t agbno,
|
||
|
|
xfs_agblock_t length, unsigned int gen);
|
||
|
|
|
||
|
|
|
||
|
|
union xfs_btree_rec;
|
||
|
|
void xfs_inobt_btrec_to_irec(struct xfs_mount *mp,
|
||
|
|
const union xfs_btree_rec *rec,
|
||
|
|
struct xfs_inobt_rec_incore *irec);
|
||
|
|
int xfs_ialloc_has_inodes_at_extent(struct xfs_btree_cur *cur,
|
||
|
|
xfs_agblock_t bno, xfs_extlen_t len, bool *exists);
|
||
|
|
int xfs_ialloc_has_inode_record(struct xfs_btree_cur *cur, xfs_agino_t low,
|
||
|
|
xfs_agino_t high, bool *exists);
|
||
|
|
int xfs_ialloc_count_inodes(struct xfs_btree_cur *cur, xfs_agino_t *count,
|
||
|
|
xfs_agino_t *freecount);
|
||
|
|
int xfs_inobt_insert_rec(struct xfs_btree_cur *cur, uint16_t holemask,
|
||
|
|
uint8_t count, int32_t freecount, xfs_inofree_t free,
|
||
|
|
int *stat);
|
||
|
|
|
||
|
|
int xfs_ialloc_cluster_alignment(struct xfs_mount *mp);
|
||
|
|
void xfs_ialloc_setup_geometry(struct xfs_mount *mp);
|
||
|
|
xfs_ino_t xfs_ialloc_calc_rootino(struct xfs_mount *mp, int sunit);
|
||
|
|
|
||
|
|
int xfs_ialloc_check_shrink(struct xfs_perag *pag, struct xfs_trans *tp,
|
||
|
|
struct xfs_buf *agibp, xfs_agblock_t new_length);
|
||
|
|
|
||
|
|
#endif /* __XFS_IALLOC_H__ */
|