From 2c3c1048746a4622d8c89a29670120dc8fab93c4 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 20:49:45 +0200 Subject: Adding upstream version 6.1.76. Signed-off-by: Daniel Baumann --- fs/xfs/xfs_itable.h | 68 +++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 68 insertions(+) create mode 100644 fs/xfs/xfs_itable.h (limited to 'fs/xfs/xfs_itable.h') diff --git a/fs/xfs/xfs_itable.h b/fs/xfs/xfs_itable.h new file mode 100644 index 000000000..e2d0eba43 --- /dev/null +++ b/fs/xfs/xfs_itable.h @@ -0,0 +1,68 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (c) 2000-2001 Silicon Graphics, Inc. All Rights Reserved. + */ +#ifndef __XFS_ITABLE_H__ +#define __XFS_ITABLE_H__ + +/* In-memory representation of a userspace request for batch inode data. */ +struct xfs_ibulk { + struct xfs_mount *mp; + struct user_namespace *mnt_userns; + void __user *ubuffer; /* user output buffer */ + xfs_ino_t startino; /* start with this inode */ + unsigned int icount; /* number of elements in ubuffer */ + unsigned int ocount; /* number of records returned */ + unsigned int flags; /* see XFS_IBULK_FLAG_* */ +}; + +/* Only iterate within the same AG as startino */ +#define XFS_IBULK_SAME_AG (1U << 0) + +/* Fill out the bs_extents64 field if set. */ +#define XFS_IBULK_NREXT64 (1U << 1) + +/* + * Advance the user buffer pointer by one record of the given size. If the + * buffer is now full, return the appropriate error code. + */ +static inline int +xfs_ibulk_advance( + struct xfs_ibulk *breq, + size_t bytes) +{ + char __user *b = breq->ubuffer; + + breq->ubuffer = b + bytes; + breq->ocount++; + return breq->ocount == breq->icount ? -ECANCELED : 0; +} + +/* + * Return stat information in bulk (by-inode) for the filesystem. + */ + +/* + * Return codes for the formatter function are 0 to continue iterating, and + * non-zero to stop iterating. Any non-zero value will be passed up to the + * bulkstat/inumbers caller. The special value -ECANCELED can be used to stop + * iteration, as neither bulkstat nor inumbers will ever generate that error + * code on their own. + */ + +typedef int (*bulkstat_one_fmt_pf)(struct xfs_ibulk *breq, + const struct xfs_bulkstat *bstat); + +int xfs_bulkstat_one(struct xfs_ibulk *breq, bulkstat_one_fmt_pf formatter); +int xfs_bulkstat(struct xfs_ibulk *breq, bulkstat_one_fmt_pf formatter); +void xfs_bulkstat_to_bstat(struct xfs_mount *mp, struct xfs_bstat *bs1, + const struct xfs_bulkstat *bstat); + +typedef int (*inumbers_fmt_pf)(struct xfs_ibulk *breq, + const struct xfs_inumbers *igrp); + +int xfs_inumbers(struct xfs_ibulk *breq, inumbers_fmt_pf formatter); +void xfs_inumbers_to_inogrp(struct xfs_inogrp *ig1, + const struct xfs_inumbers *ig); + +#endif /* __XFS_ITABLE_H__ */ -- cgit v1.2.3