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 void __user *ubuffer; /* user output buffer */ 12 xfs_ino_t startino; /* start with this inode */ 13 unsigned int icount; /* number of elements in ubuffer */ 14 unsigned int ocount; /* number of records returned */ 15 unsigned int flags; /* see XFS_IBULK_FLAG_* */ 16 }; 17 18 /* Only iterate within the same AG as startino */ 19 #define XFS_IBULK_SAME_AG (XFS_IWALK_SAME_AG) 20 21 /* 22 * Advance the user buffer pointer by one record of the given size. If the 23 * buffer is now full, return the appropriate error code. 24 */ 25 static inline int 26 xfs_ibulk_advance( 27 struct xfs_ibulk *breq, 28 size_t bytes) 29 { 30 char __user *b = breq->ubuffer; 31 32 breq->ubuffer = b + bytes; 33 breq->ocount++; 34 return breq->ocount == breq->icount ? -ECANCELED : 0; 35 } 36 37 /* 38 * Return stat information in bulk (by-inode) for the filesystem. 39 */ 40 41 /* 42 * Return codes for the formatter function are 0 to continue iterating, and 43 * non-zero to stop iterating. Any non-zero value will be passed up to the 44 * bulkstat/inumbers caller. The special value -ECANCELED can be used to stop 45 * iteration, as neither bulkstat nor inumbers will ever generate that error 46 * code on their own. 47 */ 48 49 typedef int (*bulkstat_one_fmt_pf)(struct xfs_ibulk *breq, 50 const struct xfs_bulkstat *bstat); 51 52 int xfs_bulkstat_one(struct xfs_ibulk *breq, bulkstat_one_fmt_pf formatter); 53 int xfs_bulkstat(struct xfs_ibulk *breq, bulkstat_one_fmt_pf formatter); 54 void xfs_bulkstat_to_bstat(struct xfs_mount *mp, struct xfs_bstat *bs1, 55 const struct xfs_bulkstat *bstat); 56 57 typedef int (*inumbers_fmt_pf)(struct xfs_ibulk *breq, 58 const struct xfs_inumbers *igrp); 59 60 int xfs_inumbers(struct xfs_ibulk *breq, inumbers_fmt_pf formatter); 61 void xfs_inumbers_to_inogrp(struct xfs_inogrp *ig1, 62 const struct xfs_inumbers *ig); 63 64 #endif /* __XFS_ITABLE_H__ */ 65