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 (1U << 0) 21 22 /* Fill out the bs_extents64 field if set. */ 23 #define XFS_IBULK_NREXT64 (1U << 1) 24 25 /* 26 * Advance the user buffer pointer by one record of the given size. If the 27 * buffer is now full, return the appropriate error code. 28 */ 29 static inline int 30 xfs_ibulk_advance( 31 struct xfs_ibulk *breq, 32 size_t bytes) 33 { 34 char __user *b = breq->ubuffer; 35 36 breq->ubuffer = b + bytes; 37 breq->ocount++; 38 return breq->ocount == breq->icount ? -ECANCELED : 0; 39 } 40 41 /* 42 * Return stat information in bulk (by-inode) for the filesystem. 43 */ 44 45 /* 46 * Return codes for the formatter function are 0 to continue iterating, and 47 * non-zero to stop iterating. Any non-zero value will be passed up to the 48 * bulkstat/inumbers caller. The special value -ECANCELED can be used to stop 49 * iteration, as neither bulkstat nor inumbers will ever generate that error 50 * code on their own. 51 */ 52 53 typedef int (*bulkstat_one_fmt_pf)(struct xfs_ibulk *breq, 54 const struct xfs_bulkstat *bstat); 55 56 int xfs_bulkstat_one(struct xfs_ibulk *breq, bulkstat_one_fmt_pf formatter); 57 int xfs_bulkstat(struct xfs_ibulk *breq, bulkstat_one_fmt_pf formatter); 58 void xfs_bulkstat_to_bstat(struct xfs_mount *mp, struct xfs_bstat *bs1, 59 const struct xfs_bulkstat *bstat); 60 61 typedef int (*inumbers_fmt_pf)(struct xfs_ibulk *breq, 62 const struct xfs_inumbers *igrp); 63 64 int xfs_inumbers(struct xfs_ibulk *breq, inumbers_fmt_pf formatter); 65 void xfs_inumbers_to_inogrp(struct xfs_inogrp *ig1, 66 const struct xfs_inumbers *ig); 67 68 #endif /* __XFS_ITABLE_H__ */ 69