1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * Copyright (c) 2000-2001 Silicon Graphics, Inc. All Rights Reserved. 4 */ 5 #ifndef __XFS_ITABLE_H__ 6 #define __XFS_ITABLE_H__ 7 8 /* In-memory representation of a userspace request for batch inode data. */ 9 struct xfs_ibulk { 10 struct xfs_mount *mp; 11 struct mnt_idmap *idmap; 12 void __user *ubuffer; /* user output buffer */ 13 xfs_ino_t startino; /* start with this inode */ 14 unsigned int icount; /* number of elements in ubuffer */ 15 unsigned int ocount; /* number of records returned */ 16 unsigned int flags; /* see XFS_IBULK_FLAG_* */ 17 }; 18 19 /* Only iterate within the same AG as startino */ 20 #define XFS_IBULK_SAME_AG (1U << 0) 21 22 /* Fill out the bs_extents64 field if set. */ 23 #define XFS_IBULK_NREXT64 (1U << 1) 24 25 /* Signal that we can return metadata directories. */ 26 #define XFS_IBULK_METADIR (1U << 2) 27 28 /* 29 * Advance the user buffer pointer by one record of the given size. If the 30 * buffer is now full, return the appropriate error code. 31 */ 32 static inline int 33 xfs_ibulk_advance( 34 struct xfs_ibulk *breq, 35 size_t bytes) 36 { 37 char __user *b = breq->ubuffer; 38 39 breq->ubuffer = b + bytes; 40 breq->ocount++; 41 return breq->ocount == breq->icount ? -ECANCELED : 0; 42 } 43 44 /* 45 * Return stat information in bulk (by-inode) for the filesystem. 46 */ 47 48 /* 49 * Return codes for the formatter function are 0 to continue iterating, and 50 * non-zero to stop iterating. Any non-zero value will be passed up to the 51 * bulkstat/inumbers caller. The special value -ECANCELED can be used to stop 52 * iteration, as neither bulkstat nor inumbers will ever generate that error 53 * code on their own. 54 */ 55 56 typedef int (*bulkstat_one_fmt_pf)(struct xfs_ibulk *breq, 57 const struct xfs_bulkstat *bstat); 58 59 int xfs_bulkstat_one(struct xfs_ibulk *breq, bulkstat_one_fmt_pf formatter); 60 int xfs_bulkstat(struct xfs_ibulk *breq, bulkstat_one_fmt_pf formatter); 61 void xfs_bulkstat_to_bstat(struct xfs_mount *mp, struct xfs_bstat *bs1, 62 const struct xfs_bulkstat *bstat); 63 64 typedef int (*inumbers_fmt_pf)(struct xfs_ibulk *breq, 65 const struct xfs_inumbers *igrp); 66 67 int xfs_inumbers(struct xfs_ibulk *breq, inumbers_fmt_pf formatter); 68 void xfs_inumbers_to_inogrp(struct xfs_inogrp *ig1, 69 const struct xfs_inumbers *ig); 70 71 #endif /* __XFS_ITABLE_H__ */ 72