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; /* XFS_IBULK_FLAG_* */ 17 unsigned int iwalk_flags; /* XFS_IWALK_FLAG_* */ 18 }; 19 20 /* Fill out the bs_extents64 field if set. */ 21 #define XFS_IBULK_NREXT64 (1U << 0) 22 23 /* Signal that we can return metadata directories. */ 24 #define XFS_IBULK_METADIR (1U << 1) 25 26 /* 27 * Advance the user buffer pointer by one record of the given size. If the 28 * buffer is now full, return the appropriate error code. 29 */ 30 static inline int 31 xfs_ibulk_advance( 32 struct xfs_ibulk *breq, 33 size_t bytes) 34 { 35 char __user *b = breq->ubuffer; 36 37 breq->ubuffer = b + bytes; 38 breq->ocount++; 39 return breq->ocount == breq->icount ? -ECANCELED : 0; 40 } 41 42 /* 43 * Return stat information in bulk (by-inode) for the filesystem. 44 */ 45 46 /* 47 * Return codes for the formatter function are 0 to continue iterating, and 48 * non-zero to stop iterating. Any non-zero value will be passed up to the 49 * bulkstat/inumbers caller. The special value -ECANCELED can be used to stop 50 * iteration, as neither bulkstat nor inumbers will ever generate that error 51 * code on their own. 52 */ 53 54 typedef int (*bulkstat_one_fmt_pf)(struct xfs_ibulk *breq, 55 const struct xfs_bulkstat *bstat); 56 57 int xfs_bulkstat_one(struct xfs_ibulk *breq, bulkstat_one_fmt_pf formatter); 58 int xfs_bulkstat(struct xfs_ibulk *breq, bulkstat_one_fmt_pf formatter); 59 void xfs_bulkstat_to_bstat(struct xfs_mount *mp, struct xfs_bstat *bs1, 60 const struct xfs_bulkstat *bstat); 61 62 typedef int (*inumbers_fmt_pf)(struct xfs_ibulk *breq, 63 const struct xfs_inumbers *igrp); 64 65 int xfs_inumbers(struct xfs_ibulk *breq, inumbers_fmt_pf formatter); 66 void xfs_inumbers_to_inogrp(struct xfs_inogrp *ig1, 67 const struct xfs_inumbers *ig); 68 69 #endif /* __XFS_ITABLE_H__ */ 70