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 user_namespace *mnt_userns; 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 (XFS_IWALK_SAME_AG) 21 22 /* 23 * Advance the user buffer pointer by one record of the given size. If the 24 * buffer is now full, return the appropriate error code. 25 */ 26 static inline int 27 xfs_ibulk_advance( 28 struct xfs_ibulk *breq, 29 size_t bytes) 30 { 31 char __user *b = breq->ubuffer; 32 33 breq->ubuffer = b + bytes; 34 breq->ocount++; 35 return breq->ocount == breq->icount ? -ECANCELED : 0; 36 } 37 38 /* 39 * Return stat information in bulk (by-inode) for the filesystem. 40 */ 41 42 /* 43 * Return codes for the formatter function are 0 to continue iterating, and 44 * non-zero to stop iterating. Any non-zero value will be passed up to the 45 * bulkstat/inumbers caller. The special value -ECANCELED can be used to stop 46 * iteration, as neither bulkstat nor inumbers will ever generate that error 47 * code on their own. 48 */ 49 50 typedef int (*bulkstat_one_fmt_pf)(struct xfs_ibulk *breq, 51 const struct xfs_bulkstat *bstat); 52 53 int xfs_bulkstat_one(struct xfs_ibulk *breq, bulkstat_one_fmt_pf formatter); 54 int xfs_bulkstat(struct xfs_ibulk *breq, bulkstat_one_fmt_pf formatter); 55 void xfs_bulkstat_to_bstat(struct xfs_mount *mp, struct xfs_bstat *bs1, 56 const struct xfs_bulkstat *bstat); 57 58 typedef int (*inumbers_fmt_pf)(struct xfs_ibulk *breq, 59 const struct xfs_inumbers *igrp); 60 61 int xfs_inumbers(struct xfs_ibulk *breq, inumbers_fmt_pf formatter); 62 void xfs_inumbers_to_inogrp(struct xfs_inogrp *ig1, 63 const struct xfs_inumbers *ig); 64 65 #endif /* __XFS_ITABLE_H__ */ 66