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df866c538f
Allow the V5 bulkstat ioctl to return information about metadata directory files so that xfs_scrub can find and scrub them, since they are otherwise ordinary directories. (Metadata files of course require per-file scrub code and hence do not need exposure.) Signed-off-by: Darrick J. Wong <djwong@kernel.org> Reviewed-by: Christoph Hellwig <hch@lst.de>
1407 lines
33 KiB
C
1407 lines
33 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Copyright (c) 2000-2005 Silicon Graphics, Inc.
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* All Rights Reserved.
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*/
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#include "xfs.h"
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#include "xfs_fs.h"
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#include "xfs_shared.h"
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#include "xfs_format.h"
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#include "xfs_log_format.h"
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#include "xfs_trans_resv.h"
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#include "xfs_mount.h"
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#include "xfs_inode.h"
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#include "xfs_rtalloc.h"
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#include "xfs_iwalk.h"
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#include "xfs_itable.h"
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#include "xfs_error.h"
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#include "xfs_da_format.h"
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#include "xfs_da_btree.h"
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#include "xfs_attr.h"
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#include "xfs_bmap.h"
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#include "xfs_bmap_util.h"
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#include "xfs_fsops.h"
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#include "xfs_discard.h"
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#include "xfs_quota.h"
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#include "xfs_trace.h"
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#include "xfs_icache.h"
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#include "xfs_trans.h"
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#include "xfs_btree.h"
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#include <linux/fsmap.h>
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#include "xfs_fsmap.h"
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#include "scrub/xfs_scrub.h"
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#include "xfs_sb.h"
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#include "xfs_ag.h"
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#include "xfs_health.h"
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#include "xfs_reflink.h"
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#include "xfs_ioctl.h"
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#include "xfs_xattr.h"
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#include "xfs_rtbitmap.h"
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#include "xfs_file.h"
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#include "xfs_exchrange.h"
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#include "xfs_handle.h"
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#include <linux/mount.h>
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#include <linux/fileattr.h>
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/* Return 0 on success or positive error */
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int
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xfs_fsbulkstat_one_fmt(
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struct xfs_ibulk *breq,
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const struct xfs_bulkstat *bstat)
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{
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struct xfs_bstat bs1;
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xfs_bulkstat_to_bstat(breq->mp, &bs1, bstat);
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if (copy_to_user(breq->ubuffer, &bs1, sizeof(bs1)))
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return -EFAULT;
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return xfs_ibulk_advance(breq, sizeof(struct xfs_bstat));
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}
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int
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xfs_fsinumbers_fmt(
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struct xfs_ibulk *breq,
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const struct xfs_inumbers *igrp)
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{
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struct xfs_inogrp ig1;
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xfs_inumbers_to_inogrp(&ig1, igrp);
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if (copy_to_user(breq->ubuffer, &ig1, sizeof(struct xfs_inogrp)))
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return -EFAULT;
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return xfs_ibulk_advance(breq, sizeof(struct xfs_inogrp));
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}
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STATIC int
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xfs_ioc_fsbulkstat(
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struct file *file,
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unsigned int cmd,
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void __user *arg)
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{
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struct xfs_mount *mp = XFS_I(file_inode(file))->i_mount;
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struct xfs_fsop_bulkreq bulkreq;
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struct xfs_ibulk breq = {
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.mp = mp,
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.idmap = file_mnt_idmap(file),
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.ocount = 0,
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};
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xfs_ino_t lastino;
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int error;
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/* done = 1 if there are more stats to get and if bulkstat */
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/* should be called again (unused here, but used in dmapi) */
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if (!capable(CAP_SYS_ADMIN))
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return -EPERM;
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if (xfs_is_shutdown(mp))
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return -EIO;
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if (copy_from_user(&bulkreq, arg, sizeof(struct xfs_fsop_bulkreq)))
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return -EFAULT;
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if (copy_from_user(&lastino, bulkreq.lastip, sizeof(__s64)))
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return -EFAULT;
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if (bulkreq.icount <= 0)
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return -EINVAL;
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if (bulkreq.ubuffer == NULL)
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return -EINVAL;
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breq.ubuffer = bulkreq.ubuffer;
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breq.icount = bulkreq.icount;
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/*
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* FSBULKSTAT_SINGLE expects that *lastip contains the inode number
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* that we want to stat. However, FSINUMBERS and FSBULKSTAT expect
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* that *lastip contains either zero or the number of the last inode to
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* be examined by the previous call and return results starting with
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* the next inode after that. The new bulk request back end functions
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* take the inode to start with, so we have to compute the startino
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* parameter from lastino to maintain correct function. lastino == 0
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* is a special case because it has traditionally meant "first inode
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* in filesystem".
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*/
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if (cmd == XFS_IOC_FSINUMBERS) {
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breq.startino = lastino ? lastino + 1 : 0;
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error = xfs_inumbers(&breq, xfs_fsinumbers_fmt);
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lastino = breq.startino - 1;
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} else if (cmd == XFS_IOC_FSBULKSTAT_SINGLE) {
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breq.startino = lastino;
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breq.icount = 1;
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error = xfs_bulkstat_one(&breq, xfs_fsbulkstat_one_fmt);
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} else { /* XFS_IOC_FSBULKSTAT */
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breq.startino = lastino ? lastino + 1 : 0;
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error = xfs_bulkstat(&breq, xfs_fsbulkstat_one_fmt);
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lastino = breq.startino - 1;
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}
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if (error)
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return error;
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if (bulkreq.lastip != NULL &&
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copy_to_user(bulkreq.lastip, &lastino, sizeof(xfs_ino_t)))
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return -EFAULT;
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if (bulkreq.ocount != NULL &&
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copy_to_user(bulkreq.ocount, &breq.ocount, sizeof(__s32)))
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return -EFAULT;
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return 0;
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}
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/* Return 0 on success or positive error */
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static int
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xfs_bulkstat_fmt(
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struct xfs_ibulk *breq,
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const struct xfs_bulkstat *bstat)
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{
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if (copy_to_user(breq->ubuffer, bstat, sizeof(struct xfs_bulkstat)))
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return -EFAULT;
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return xfs_ibulk_advance(breq, sizeof(struct xfs_bulkstat));
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}
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/*
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* Check the incoming bulk request @hdr from userspace and initialize the
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* internal @breq bulk request appropriately. Returns 0 if the bulk request
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* should proceed; -ECANCELED if there's nothing to do; or the usual
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* negative error code.
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*/
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static int
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xfs_bulk_ireq_setup(
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struct xfs_mount *mp,
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const struct xfs_bulk_ireq *hdr,
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struct xfs_ibulk *breq,
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void __user *ubuffer)
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{
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if (hdr->icount == 0 ||
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(hdr->flags & ~XFS_BULK_IREQ_FLAGS_ALL) ||
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memchr_inv(hdr->reserved, 0, sizeof(hdr->reserved)))
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return -EINVAL;
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breq->startino = hdr->ino;
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breq->ubuffer = ubuffer;
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breq->icount = hdr->icount;
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breq->ocount = 0;
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breq->flags = 0;
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/*
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* The @ino parameter is a special value, so we must look it up here.
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* We're not allowed to have IREQ_AGNO, and we only return one inode
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* worth of data.
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*/
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if (hdr->flags & XFS_BULK_IREQ_SPECIAL) {
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if (hdr->flags & XFS_BULK_IREQ_AGNO)
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return -EINVAL;
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switch (hdr->ino) {
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case XFS_BULK_IREQ_SPECIAL_ROOT:
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breq->startino = mp->m_sb.sb_rootino;
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break;
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default:
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return -EINVAL;
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}
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breq->icount = 1;
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}
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/*
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* The IREQ_AGNO flag means that we only want results from a given AG.
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* If @hdr->ino is zero, we start iterating in that AG. If @hdr->ino is
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* beyond the specified AG then we return no results.
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*/
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if (hdr->flags & XFS_BULK_IREQ_AGNO) {
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if (hdr->agno >= mp->m_sb.sb_agcount)
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return -EINVAL;
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if (breq->startino == 0)
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breq->startino = XFS_AGINO_TO_INO(mp, hdr->agno, 0);
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else if (XFS_INO_TO_AGNO(mp, breq->startino) < hdr->agno)
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return -EINVAL;
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breq->flags |= XFS_IBULK_SAME_AG;
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/* Asking for an inode past the end of the AG? We're done! */
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if (XFS_INO_TO_AGNO(mp, breq->startino) > hdr->agno)
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return -ECANCELED;
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} else if (hdr->agno)
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return -EINVAL;
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/* Asking for an inode past the end of the FS? We're done! */
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if (XFS_INO_TO_AGNO(mp, breq->startino) >= mp->m_sb.sb_agcount)
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return -ECANCELED;
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if (hdr->flags & XFS_BULK_IREQ_NREXT64)
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breq->flags |= XFS_IBULK_NREXT64;
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/* Caller wants to see metadata directories in bulkstat output. */
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if (hdr->flags & XFS_BULK_IREQ_METADIR)
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breq->flags |= XFS_IBULK_METADIR;
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return 0;
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}
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/*
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* Update the userspace bulk request @hdr to reflect the end state of the
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* internal bulk request @breq.
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*/
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static void
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xfs_bulk_ireq_teardown(
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struct xfs_bulk_ireq *hdr,
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struct xfs_ibulk *breq)
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{
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hdr->ino = breq->startino;
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hdr->ocount = breq->ocount;
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}
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/* Handle the v5 bulkstat ioctl. */
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STATIC int
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xfs_ioc_bulkstat(
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struct file *file,
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unsigned int cmd,
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struct xfs_bulkstat_req __user *arg)
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{
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struct xfs_mount *mp = XFS_I(file_inode(file))->i_mount;
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struct xfs_bulk_ireq hdr;
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struct xfs_ibulk breq = {
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.mp = mp,
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.idmap = file_mnt_idmap(file),
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};
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int error;
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if (!capable(CAP_SYS_ADMIN))
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return -EPERM;
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if (xfs_is_shutdown(mp))
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return -EIO;
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if (copy_from_user(&hdr, &arg->hdr, sizeof(hdr)))
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return -EFAULT;
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error = xfs_bulk_ireq_setup(mp, &hdr, &breq, arg->bulkstat);
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if (error == -ECANCELED)
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goto out_teardown;
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if (error < 0)
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return error;
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error = xfs_bulkstat(&breq, xfs_bulkstat_fmt);
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if (error)
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return error;
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out_teardown:
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xfs_bulk_ireq_teardown(&hdr, &breq);
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if (copy_to_user(&arg->hdr, &hdr, sizeof(hdr)))
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return -EFAULT;
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return 0;
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}
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STATIC int
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xfs_inumbers_fmt(
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struct xfs_ibulk *breq,
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const struct xfs_inumbers *igrp)
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{
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if (copy_to_user(breq->ubuffer, igrp, sizeof(struct xfs_inumbers)))
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return -EFAULT;
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return xfs_ibulk_advance(breq, sizeof(struct xfs_inumbers));
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}
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/* Handle the v5 inumbers ioctl. */
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STATIC int
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xfs_ioc_inumbers(
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struct xfs_mount *mp,
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unsigned int cmd,
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struct xfs_inumbers_req __user *arg)
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{
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struct xfs_bulk_ireq hdr;
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struct xfs_ibulk breq = {
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.mp = mp,
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};
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int error;
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if (!capable(CAP_SYS_ADMIN))
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return -EPERM;
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if (xfs_is_shutdown(mp))
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return -EIO;
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if (copy_from_user(&hdr, &arg->hdr, sizeof(hdr)))
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return -EFAULT;
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if (hdr.flags & XFS_BULK_IREQ_METADIR)
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return -EINVAL;
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error = xfs_bulk_ireq_setup(mp, &hdr, &breq, arg->inumbers);
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if (error == -ECANCELED)
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goto out_teardown;
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if (error < 0)
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return error;
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error = xfs_inumbers(&breq, xfs_inumbers_fmt);
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if (error)
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return error;
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out_teardown:
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xfs_bulk_ireq_teardown(&hdr, &breq);
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if (copy_to_user(&arg->hdr, &hdr, sizeof(hdr)))
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return -EFAULT;
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return 0;
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}
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STATIC int
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xfs_ioc_fsgeometry(
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struct xfs_mount *mp,
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void __user *arg,
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int struct_version)
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{
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struct xfs_fsop_geom fsgeo;
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size_t len;
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xfs_fs_geometry(mp, &fsgeo, struct_version);
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if (struct_version <= 3)
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len = sizeof(struct xfs_fsop_geom_v1);
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else if (struct_version == 4)
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len = sizeof(struct xfs_fsop_geom_v4);
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else {
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xfs_fsop_geom_health(mp, &fsgeo);
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len = sizeof(fsgeo);
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}
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if (copy_to_user(arg, &fsgeo, len))
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return -EFAULT;
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return 0;
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}
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STATIC int
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xfs_ioc_ag_geometry(
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struct xfs_mount *mp,
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void __user *arg)
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{
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struct xfs_perag *pag;
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struct xfs_ag_geometry ageo;
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int error;
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if (copy_from_user(&ageo, arg, sizeof(ageo)))
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return -EFAULT;
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if (ageo.ag_flags)
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return -EINVAL;
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if (memchr_inv(&ageo.ag_reserved, 0, sizeof(ageo.ag_reserved)))
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return -EINVAL;
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pag = xfs_perag_get(mp, ageo.ag_number);
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if (!pag)
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return -EINVAL;
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error = xfs_ag_get_geometry(pag, &ageo);
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xfs_perag_put(pag);
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if (error)
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return error;
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if (copy_to_user(arg, &ageo, sizeof(ageo)))
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return -EFAULT;
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return 0;
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}
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/*
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* Linux extended inode flags interface.
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*/
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static void
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xfs_fill_fsxattr(
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struct xfs_inode *ip,
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int whichfork,
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struct fileattr *fa)
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{
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struct xfs_mount *mp = ip->i_mount;
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struct xfs_ifork *ifp = xfs_ifork_ptr(ip, whichfork);
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fileattr_fill_xflags(fa, xfs_ip2xflags(ip));
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if (ip->i_diflags & XFS_DIFLAG_EXTSIZE) {
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fa->fsx_extsize = XFS_FSB_TO_B(mp, ip->i_extsize);
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} else if (ip->i_diflags & XFS_DIFLAG_EXTSZINHERIT) {
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/*
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* Don't let a misaligned extent size hint on a directory
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* escape to userspace if it won't pass the setattr checks
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* later.
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*/
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if ((ip->i_diflags & XFS_DIFLAG_RTINHERIT) &&
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xfs_extlen_to_rtxmod(mp, ip->i_extsize) > 0) {
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fa->fsx_xflags &= ~(FS_XFLAG_EXTSIZE |
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FS_XFLAG_EXTSZINHERIT);
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fa->fsx_extsize = 0;
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} else {
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fa->fsx_extsize = XFS_FSB_TO_B(mp, ip->i_extsize);
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}
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}
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if (ip->i_diflags2 & XFS_DIFLAG2_COWEXTSIZE)
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fa->fsx_cowextsize = XFS_FSB_TO_B(mp, ip->i_cowextsize);
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fa->fsx_projid = ip->i_projid;
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if (ifp && !xfs_need_iread_extents(ifp))
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fa->fsx_nextents = xfs_iext_count(ifp);
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else
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fa->fsx_nextents = xfs_ifork_nextents(ifp);
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}
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STATIC int
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xfs_ioc_fsgetxattra(
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xfs_inode_t *ip,
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void __user *arg)
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{
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struct fileattr fa;
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xfs_ilock(ip, XFS_ILOCK_SHARED);
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xfs_fill_fsxattr(ip, XFS_ATTR_FORK, &fa);
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xfs_iunlock(ip, XFS_ILOCK_SHARED);
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return copy_fsxattr_to_user(&fa, arg);
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}
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int
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xfs_fileattr_get(
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struct dentry *dentry,
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struct fileattr *fa)
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{
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struct xfs_inode *ip = XFS_I(d_inode(dentry));
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if (d_is_special(dentry))
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return -ENOTTY;
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xfs_ilock(ip, XFS_ILOCK_SHARED);
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xfs_fill_fsxattr(ip, XFS_DATA_FORK, fa);
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xfs_iunlock(ip, XFS_ILOCK_SHARED);
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return 0;
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}
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static int
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xfs_ioctl_setattr_xflags(
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struct xfs_trans *tp,
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struct xfs_inode *ip,
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struct fileattr *fa)
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{
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struct xfs_mount *mp = ip->i_mount;
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bool rtflag = (fa->fsx_xflags & FS_XFLAG_REALTIME);
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uint64_t i_flags2;
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if (rtflag != XFS_IS_REALTIME_INODE(ip)) {
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/* Can't change realtime flag if any extents are allocated. */
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|
if (xfs_inode_has_filedata(ip))
|
|
return -EINVAL;
|
|
|
|
/*
|
|
* If S_DAX is enabled on this file, we can only switch the
|
|
* device if both support fsdax. We can't update S_DAX because
|
|
* there might be other threads walking down the access paths.
|
|
*/
|
|
if (IS_DAX(VFS_I(ip)) &&
|
|
(mp->m_ddev_targp->bt_daxdev == NULL ||
|
|
(mp->m_rtdev_targp &&
|
|
mp->m_rtdev_targp->bt_daxdev == NULL)))
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (rtflag) {
|
|
/* If realtime flag is set then must have realtime device */
|
|
if (mp->m_sb.sb_rblocks == 0 || mp->m_sb.sb_rextsize == 0 ||
|
|
xfs_extlen_to_rtxmod(mp, ip->i_extsize))
|
|
return -EINVAL;
|
|
|
|
/* Clear reflink if we are actually able to set the rt flag. */
|
|
if (xfs_is_reflink_inode(ip))
|
|
ip->i_diflags2 &= ~XFS_DIFLAG2_REFLINK;
|
|
}
|
|
|
|
/* diflags2 only valid for v3 inodes. */
|
|
i_flags2 = xfs_flags2diflags2(ip, fa->fsx_xflags);
|
|
if (i_flags2 && !xfs_has_v3inodes(mp))
|
|
return -EINVAL;
|
|
|
|
ip->i_diflags = xfs_flags2diflags(ip, fa->fsx_xflags);
|
|
ip->i_diflags2 = i_flags2;
|
|
|
|
xfs_diflags_to_iflags(ip, false);
|
|
|
|
/*
|
|
* Make the stable writes flag match that of the device the inode
|
|
* resides on when flipping the RT flag.
|
|
*/
|
|
if (rtflag != XFS_IS_REALTIME_INODE(ip) && S_ISREG(VFS_I(ip)->i_mode))
|
|
xfs_update_stable_writes(ip);
|
|
|
|
xfs_trans_ichgtime(tp, ip, XFS_ICHGTIME_CHG);
|
|
xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);
|
|
XFS_STATS_INC(mp, xs_ig_attrchg);
|
|
return 0;
|
|
}
|
|
|
|
static void
|
|
xfs_ioctl_setattr_prepare_dax(
|
|
struct xfs_inode *ip,
|
|
struct fileattr *fa)
|
|
{
|
|
struct xfs_mount *mp = ip->i_mount;
|
|
struct inode *inode = VFS_I(ip);
|
|
|
|
if (S_ISDIR(inode->i_mode))
|
|
return;
|
|
|
|
if (xfs_has_dax_always(mp) || xfs_has_dax_never(mp))
|
|
return;
|
|
|
|
if (((fa->fsx_xflags & FS_XFLAG_DAX) &&
|
|
!(ip->i_diflags2 & XFS_DIFLAG2_DAX)) ||
|
|
(!(fa->fsx_xflags & FS_XFLAG_DAX) &&
|
|
(ip->i_diflags2 & XFS_DIFLAG2_DAX)))
|
|
d_mark_dontcache(inode);
|
|
}
|
|
|
|
/*
|
|
* Set up the transaction structure for the setattr operation, checking that we
|
|
* have permission to do so. On success, return a clean transaction and the
|
|
* inode locked exclusively ready for further operation specific checks. On
|
|
* failure, return an error without modifying or locking the inode.
|
|
*/
|
|
static struct xfs_trans *
|
|
xfs_ioctl_setattr_get_trans(
|
|
struct xfs_inode *ip,
|
|
struct xfs_dquot *pdqp)
|
|
{
|
|
struct xfs_mount *mp = ip->i_mount;
|
|
struct xfs_trans *tp;
|
|
int error = -EROFS;
|
|
|
|
if (xfs_is_readonly(mp))
|
|
goto out_error;
|
|
error = -EIO;
|
|
if (xfs_is_shutdown(mp))
|
|
goto out_error;
|
|
|
|
error = xfs_trans_alloc_ichange(ip, NULL, NULL, pdqp,
|
|
has_capability_noaudit(current, CAP_FOWNER), &tp);
|
|
if (error)
|
|
goto out_error;
|
|
|
|
if (xfs_has_wsync(mp))
|
|
xfs_trans_set_sync(tp);
|
|
|
|
return tp;
|
|
|
|
out_error:
|
|
return ERR_PTR(error);
|
|
}
|
|
|
|
/*
|
|
* Validate a proposed extent size hint. For regular files, the hint can only
|
|
* be changed if no extents are allocated.
|
|
*/
|
|
static int
|
|
xfs_ioctl_setattr_check_extsize(
|
|
struct xfs_inode *ip,
|
|
struct fileattr *fa)
|
|
{
|
|
struct xfs_mount *mp = ip->i_mount;
|
|
xfs_failaddr_t failaddr;
|
|
uint16_t new_diflags;
|
|
|
|
if (!fa->fsx_valid)
|
|
return 0;
|
|
|
|
if (S_ISREG(VFS_I(ip)->i_mode) && xfs_inode_has_filedata(ip) &&
|
|
XFS_FSB_TO_B(mp, ip->i_extsize) != fa->fsx_extsize)
|
|
return -EINVAL;
|
|
|
|
if (fa->fsx_extsize & mp->m_blockmask)
|
|
return -EINVAL;
|
|
|
|
new_diflags = xfs_flags2diflags(ip, fa->fsx_xflags);
|
|
|
|
/*
|
|
* Inode verifiers do not check that the extent size hint is an integer
|
|
* multiple of the rt extent size on a directory with both rtinherit
|
|
* and extszinherit flags set. Don't let sysadmins misconfigure
|
|
* directories.
|
|
*/
|
|
if ((new_diflags & XFS_DIFLAG_RTINHERIT) &&
|
|
(new_diflags & XFS_DIFLAG_EXTSZINHERIT)) {
|
|
unsigned int rtextsize_bytes;
|
|
|
|
rtextsize_bytes = XFS_FSB_TO_B(mp, mp->m_sb.sb_rextsize);
|
|
if (fa->fsx_extsize % rtextsize_bytes)
|
|
return -EINVAL;
|
|
}
|
|
|
|
failaddr = xfs_inode_validate_extsize(ip->i_mount,
|
|
XFS_B_TO_FSB(mp, fa->fsx_extsize),
|
|
VFS_I(ip)->i_mode, new_diflags);
|
|
return failaddr != NULL ? -EINVAL : 0;
|
|
}
|
|
|
|
static int
|
|
xfs_ioctl_setattr_check_cowextsize(
|
|
struct xfs_inode *ip,
|
|
struct fileattr *fa)
|
|
{
|
|
struct xfs_mount *mp = ip->i_mount;
|
|
xfs_failaddr_t failaddr;
|
|
uint64_t new_diflags2;
|
|
uint16_t new_diflags;
|
|
|
|
if (!fa->fsx_valid)
|
|
return 0;
|
|
|
|
if (fa->fsx_cowextsize & mp->m_blockmask)
|
|
return -EINVAL;
|
|
|
|
new_diflags = xfs_flags2diflags(ip, fa->fsx_xflags);
|
|
new_diflags2 = xfs_flags2diflags2(ip, fa->fsx_xflags);
|
|
|
|
failaddr = xfs_inode_validate_cowextsize(ip->i_mount,
|
|
XFS_B_TO_FSB(mp, fa->fsx_cowextsize),
|
|
VFS_I(ip)->i_mode, new_diflags, new_diflags2);
|
|
return failaddr != NULL ? -EINVAL : 0;
|
|
}
|
|
|
|
static int
|
|
xfs_ioctl_setattr_check_projid(
|
|
struct xfs_inode *ip,
|
|
struct fileattr *fa)
|
|
{
|
|
if (!fa->fsx_valid)
|
|
return 0;
|
|
|
|
/* Disallow 32bit project ids if 32bit IDs are not enabled. */
|
|
if (fa->fsx_projid > (uint16_t)-1 &&
|
|
!xfs_has_projid32(ip->i_mount))
|
|
return -EINVAL;
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
xfs_fileattr_set(
|
|
struct mnt_idmap *idmap,
|
|
struct dentry *dentry,
|
|
struct fileattr *fa)
|
|
{
|
|
struct xfs_inode *ip = XFS_I(d_inode(dentry));
|
|
struct xfs_mount *mp = ip->i_mount;
|
|
struct xfs_trans *tp;
|
|
struct xfs_dquot *pdqp = NULL;
|
|
struct xfs_dquot *olddquot = NULL;
|
|
int error;
|
|
|
|
trace_xfs_ioctl_setattr(ip);
|
|
|
|
if (d_is_special(dentry))
|
|
return -ENOTTY;
|
|
|
|
if (!fa->fsx_valid) {
|
|
if (fa->flags & ~(FS_IMMUTABLE_FL | FS_APPEND_FL |
|
|
FS_NOATIME_FL | FS_NODUMP_FL |
|
|
FS_SYNC_FL | FS_DAX_FL | FS_PROJINHERIT_FL))
|
|
return -EOPNOTSUPP;
|
|
}
|
|
|
|
error = xfs_ioctl_setattr_check_projid(ip, fa);
|
|
if (error)
|
|
return error;
|
|
|
|
/*
|
|
* If disk quotas is on, we make sure that the dquots do exist on disk,
|
|
* before we start any other transactions. Trying to do this later
|
|
* is messy. We don't care to take a readlock to look at the ids
|
|
* in inode here, because we can't hold it across the trans_reserve.
|
|
* If the IDs do change before we take the ilock, we're covered
|
|
* because the i_*dquot fields will get updated anyway.
|
|
*/
|
|
if (fa->fsx_valid && XFS_IS_QUOTA_ON(mp)) {
|
|
error = xfs_qm_vop_dqalloc(ip, VFS_I(ip)->i_uid,
|
|
VFS_I(ip)->i_gid, fa->fsx_projid,
|
|
XFS_QMOPT_PQUOTA, NULL, NULL, &pdqp);
|
|
if (error)
|
|
return error;
|
|
}
|
|
|
|
xfs_ioctl_setattr_prepare_dax(ip, fa);
|
|
|
|
tp = xfs_ioctl_setattr_get_trans(ip, pdqp);
|
|
if (IS_ERR(tp)) {
|
|
error = PTR_ERR(tp);
|
|
goto error_free_dquots;
|
|
}
|
|
|
|
error = xfs_ioctl_setattr_check_extsize(ip, fa);
|
|
if (error)
|
|
goto error_trans_cancel;
|
|
|
|
error = xfs_ioctl_setattr_check_cowextsize(ip, fa);
|
|
if (error)
|
|
goto error_trans_cancel;
|
|
|
|
error = xfs_ioctl_setattr_xflags(tp, ip, fa);
|
|
if (error)
|
|
goto error_trans_cancel;
|
|
|
|
if (!fa->fsx_valid)
|
|
goto skip_xattr;
|
|
/*
|
|
* Change file ownership. Must be the owner or privileged. CAP_FSETID
|
|
* overrides the following restrictions:
|
|
*
|
|
* The set-user-ID and set-group-ID bits of a file will be cleared upon
|
|
* successful return from chown()
|
|
*/
|
|
|
|
if ((VFS_I(ip)->i_mode & (S_ISUID|S_ISGID)) &&
|
|
!capable_wrt_inode_uidgid(idmap, VFS_I(ip), CAP_FSETID))
|
|
VFS_I(ip)->i_mode &= ~(S_ISUID|S_ISGID);
|
|
|
|
/* Change the ownerships and register project quota modifications */
|
|
if (ip->i_projid != fa->fsx_projid) {
|
|
if (XFS_IS_PQUOTA_ON(mp)) {
|
|
olddquot = xfs_qm_vop_chown(tp, ip,
|
|
&ip->i_pdquot, pdqp);
|
|
}
|
|
ip->i_projid = fa->fsx_projid;
|
|
}
|
|
|
|
/*
|
|
* Only set the extent size hint if we've already determined that the
|
|
* extent size hint should be set on the inode. If no extent size flags
|
|
* are set on the inode then unconditionally clear the extent size hint.
|
|
*/
|
|
if (ip->i_diflags & (XFS_DIFLAG_EXTSIZE | XFS_DIFLAG_EXTSZINHERIT))
|
|
ip->i_extsize = XFS_B_TO_FSB(mp, fa->fsx_extsize);
|
|
else
|
|
ip->i_extsize = 0;
|
|
|
|
if (xfs_has_v3inodes(mp)) {
|
|
if (ip->i_diflags2 & XFS_DIFLAG2_COWEXTSIZE)
|
|
ip->i_cowextsize = XFS_B_TO_FSB(mp, fa->fsx_cowextsize);
|
|
else
|
|
ip->i_cowextsize = 0;
|
|
}
|
|
|
|
skip_xattr:
|
|
error = xfs_trans_commit(tp);
|
|
|
|
/*
|
|
* Release any dquot(s) the inode had kept before chown.
|
|
*/
|
|
xfs_qm_dqrele(olddquot);
|
|
xfs_qm_dqrele(pdqp);
|
|
|
|
return error;
|
|
|
|
error_trans_cancel:
|
|
xfs_trans_cancel(tp);
|
|
error_free_dquots:
|
|
xfs_qm_dqrele(pdqp);
|
|
return error;
|
|
}
|
|
|
|
static bool
|
|
xfs_getbmap_format(
|
|
struct kgetbmap *p,
|
|
struct getbmapx __user *u,
|
|
size_t recsize)
|
|
{
|
|
if (put_user(p->bmv_offset, &u->bmv_offset) ||
|
|
put_user(p->bmv_block, &u->bmv_block) ||
|
|
put_user(p->bmv_length, &u->bmv_length) ||
|
|
put_user(0, &u->bmv_count) ||
|
|
put_user(0, &u->bmv_entries))
|
|
return false;
|
|
if (recsize < sizeof(struct getbmapx))
|
|
return true;
|
|
if (put_user(0, &u->bmv_iflags) ||
|
|
put_user(p->bmv_oflags, &u->bmv_oflags) ||
|
|
put_user(0, &u->bmv_unused1) ||
|
|
put_user(0, &u->bmv_unused2))
|
|
return false;
|
|
return true;
|
|
}
|
|
|
|
STATIC int
|
|
xfs_ioc_getbmap(
|
|
struct file *file,
|
|
unsigned int cmd,
|
|
void __user *arg)
|
|
{
|
|
struct getbmapx bmx = { 0 };
|
|
struct kgetbmap *buf;
|
|
size_t recsize;
|
|
int error, i;
|
|
|
|
switch (cmd) {
|
|
case XFS_IOC_GETBMAPA:
|
|
bmx.bmv_iflags = BMV_IF_ATTRFORK;
|
|
fallthrough;
|
|
case XFS_IOC_GETBMAP:
|
|
/* struct getbmap is a strict subset of struct getbmapx. */
|
|
recsize = sizeof(struct getbmap);
|
|
break;
|
|
case XFS_IOC_GETBMAPX:
|
|
recsize = sizeof(struct getbmapx);
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (copy_from_user(&bmx, arg, recsize))
|
|
return -EFAULT;
|
|
|
|
if (bmx.bmv_count < 2)
|
|
return -EINVAL;
|
|
if (bmx.bmv_count >= INT_MAX / recsize)
|
|
return -ENOMEM;
|
|
|
|
buf = kvcalloc(bmx.bmv_count, sizeof(*buf), GFP_KERNEL);
|
|
if (!buf)
|
|
return -ENOMEM;
|
|
|
|
error = xfs_getbmap(XFS_I(file_inode(file)), &bmx, buf);
|
|
if (error)
|
|
goto out_free_buf;
|
|
|
|
error = -EFAULT;
|
|
if (copy_to_user(arg, &bmx, recsize))
|
|
goto out_free_buf;
|
|
arg += recsize;
|
|
|
|
for (i = 0; i < bmx.bmv_entries; i++) {
|
|
if (!xfs_getbmap_format(buf + i, arg, recsize))
|
|
goto out_free_buf;
|
|
arg += recsize;
|
|
}
|
|
|
|
error = 0;
|
|
out_free_buf:
|
|
kvfree(buf);
|
|
return error;
|
|
}
|
|
|
|
int
|
|
xfs_ioc_swapext(
|
|
xfs_swapext_t *sxp)
|
|
{
|
|
xfs_inode_t *ip, *tip;
|
|
struct fd f, tmp;
|
|
int error = 0;
|
|
|
|
/* Pull information for the target fd */
|
|
f = fdget((int)sxp->sx_fdtarget);
|
|
if (!fd_file(f)) {
|
|
error = -EINVAL;
|
|
goto out;
|
|
}
|
|
|
|
if (!(fd_file(f)->f_mode & FMODE_WRITE) ||
|
|
!(fd_file(f)->f_mode & FMODE_READ) ||
|
|
(fd_file(f)->f_flags & O_APPEND)) {
|
|
error = -EBADF;
|
|
goto out_put_file;
|
|
}
|
|
|
|
tmp = fdget((int)sxp->sx_fdtmp);
|
|
if (!fd_file(tmp)) {
|
|
error = -EINVAL;
|
|
goto out_put_file;
|
|
}
|
|
|
|
if (!(fd_file(tmp)->f_mode & FMODE_WRITE) ||
|
|
!(fd_file(tmp)->f_mode & FMODE_READ) ||
|
|
(fd_file(tmp)->f_flags & O_APPEND)) {
|
|
error = -EBADF;
|
|
goto out_put_tmp_file;
|
|
}
|
|
|
|
if (IS_SWAPFILE(file_inode(fd_file(f))) ||
|
|
IS_SWAPFILE(file_inode(fd_file(tmp)))) {
|
|
error = -EINVAL;
|
|
goto out_put_tmp_file;
|
|
}
|
|
|
|
/*
|
|
* We need to ensure that the fds passed in point to XFS inodes
|
|
* before we cast and access them as XFS structures as we have no
|
|
* control over what the user passes us here.
|
|
*/
|
|
if (fd_file(f)->f_op != &xfs_file_operations ||
|
|
fd_file(tmp)->f_op != &xfs_file_operations) {
|
|
error = -EINVAL;
|
|
goto out_put_tmp_file;
|
|
}
|
|
|
|
ip = XFS_I(file_inode(fd_file(f)));
|
|
tip = XFS_I(file_inode(fd_file(tmp)));
|
|
|
|
if (ip->i_mount != tip->i_mount) {
|
|
error = -EINVAL;
|
|
goto out_put_tmp_file;
|
|
}
|
|
|
|
if (ip->i_ino == tip->i_ino) {
|
|
error = -EINVAL;
|
|
goto out_put_tmp_file;
|
|
}
|
|
|
|
if (xfs_is_shutdown(ip->i_mount)) {
|
|
error = -EIO;
|
|
goto out_put_tmp_file;
|
|
}
|
|
|
|
error = xfs_swap_extents(ip, tip, sxp);
|
|
|
|
out_put_tmp_file:
|
|
fdput(tmp);
|
|
out_put_file:
|
|
fdput(f);
|
|
out:
|
|
return error;
|
|
}
|
|
|
|
static int
|
|
xfs_ioc_getlabel(
|
|
struct xfs_mount *mp,
|
|
char __user *user_label)
|
|
{
|
|
struct xfs_sb *sbp = &mp->m_sb;
|
|
char label[XFSLABEL_MAX + 1];
|
|
|
|
/* Paranoia */
|
|
BUILD_BUG_ON(sizeof(sbp->sb_fname) > FSLABEL_MAX);
|
|
|
|
/* 1 larger than sb_fname, so this ensures a trailing NUL char */
|
|
memset(label, 0, sizeof(label));
|
|
spin_lock(&mp->m_sb_lock);
|
|
strncpy(label, sbp->sb_fname, XFSLABEL_MAX);
|
|
spin_unlock(&mp->m_sb_lock);
|
|
|
|
if (copy_to_user(user_label, label, sizeof(label)))
|
|
return -EFAULT;
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
xfs_ioc_setlabel(
|
|
struct file *filp,
|
|
struct xfs_mount *mp,
|
|
char __user *newlabel)
|
|
{
|
|
struct xfs_sb *sbp = &mp->m_sb;
|
|
char label[XFSLABEL_MAX + 1];
|
|
size_t len;
|
|
int error;
|
|
|
|
if (!capable(CAP_SYS_ADMIN))
|
|
return -EPERM;
|
|
/*
|
|
* The generic ioctl allows up to FSLABEL_MAX chars, but XFS is much
|
|
* smaller, at 12 bytes. We copy one more to be sure we find the
|
|
* (required) NULL character to test the incoming label length.
|
|
* NB: The on disk label doesn't need to be null terminated.
|
|
*/
|
|
if (copy_from_user(label, newlabel, XFSLABEL_MAX + 1))
|
|
return -EFAULT;
|
|
len = strnlen(label, XFSLABEL_MAX + 1);
|
|
if (len > sizeof(sbp->sb_fname))
|
|
return -EINVAL;
|
|
|
|
error = mnt_want_write_file(filp);
|
|
if (error)
|
|
return error;
|
|
|
|
spin_lock(&mp->m_sb_lock);
|
|
memset(sbp->sb_fname, 0, sizeof(sbp->sb_fname));
|
|
memcpy(sbp->sb_fname, label, len);
|
|
spin_unlock(&mp->m_sb_lock);
|
|
|
|
/*
|
|
* Now we do several things to satisfy userspace.
|
|
* In addition to normal logging of the primary superblock, we also
|
|
* immediately write these changes to sector zero for the primary, then
|
|
* update all backup supers (as xfs_db does for a label change), then
|
|
* invalidate the block device page cache. This is so that any prior
|
|
* buffered reads from userspace (i.e. from blkid) are invalidated,
|
|
* and userspace will see the newly-written label.
|
|
*/
|
|
error = xfs_sync_sb_buf(mp);
|
|
if (error)
|
|
goto out;
|
|
/*
|
|
* growfs also updates backup supers so lock against that.
|
|
*/
|
|
mutex_lock(&mp->m_growlock);
|
|
error = xfs_update_secondary_sbs(mp);
|
|
mutex_unlock(&mp->m_growlock);
|
|
|
|
invalidate_bdev(mp->m_ddev_targp->bt_bdev);
|
|
|
|
out:
|
|
mnt_drop_write_file(filp);
|
|
return error;
|
|
}
|
|
|
|
static inline int
|
|
xfs_fs_eofblocks_from_user(
|
|
struct xfs_fs_eofblocks *src,
|
|
struct xfs_icwalk *dst)
|
|
{
|
|
if (src->eof_version != XFS_EOFBLOCKS_VERSION)
|
|
return -EINVAL;
|
|
|
|
if (src->eof_flags & ~XFS_EOF_FLAGS_VALID)
|
|
return -EINVAL;
|
|
|
|
if (memchr_inv(&src->pad32, 0, sizeof(src->pad32)) ||
|
|
memchr_inv(src->pad64, 0, sizeof(src->pad64)))
|
|
return -EINVAL;
|
|
|
|
dst->icw_flags = 0;
|
|
if (src->eof_flags & XFS_EOF_FLAGS_SYNC)
|
|
dst->icw_flags |= XFS_ICWALK_FLAG_SYNC;
|
|
if (src->eof_flags & XFS_EOF_FLAGS_UID)
|
|
dst->icw_flags |= XFS_ICWALK_FLAG_UID;
|
|
if (src->eof_flags & XFS_EOF_FLAGS_GID)
|
|
dst->icw_flags |= XFS_ICWALK_FLAG_GID;
|
|
if (src->eof_flags & XFS_EOF_FLAGS_PRID)
|
|
dst->icw_flags |= XFS_ICWALK_FLAG_PRID;
|
|
if (src->eof_flags & XFS_EOF_FLAGS_MINFILESIZE)
|
|
dst->icw_flags |= XFS_ICWALK_FLAG_MINFILESIZE;
|
|
|
|
dst->icw_prid = src->eof_prid;
|
|
dst->icw_min_file_size = src->eof_min_file_size;
|
|
|
|
dst->icw_uid = INVALID_UID;
|
|
if (src->eof_flags & XFS_EOF_FLAGS_UID) {
|
|
dst->icw_uid = make_kuid(current_user_ns(), src->eof_uid);
|
|
if (!uid_valid(dst->icw_uid))
|
|
return -EINVAL;
|
|
}
|
|
|
|
dst->icw_gid = INVALID_GID;
|
|
if (src->eof_flags & XFS_EOF_FLAGS_GID) {
|
|
dst->icw_gid = make_kgid(current_user_ns(), src->eof_gid);
|
|
if (!gid_valid(dst->icw_gid))
|
|
return -EINVAL;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
xfs_ioctl_getset_resblocks(
|
|
struct file *filp,
|
|
unsigned int cmd,
|
|
void __user *arg)
|
|
{
|
|
struct xfs_mount *mp = XFS_I(file_inode(filp))->i_mount;
|
|
struct xfs_fsop_resblks fsop = { };
|
|
int error;
|
|
|
|
if (!capable(CAP_SYS_ADMIN))
|
|
return -EPERM;
|
|
|
|
if (cmd == XFS_IOC_SET_RESBLKS) {
|
|
if (xfs_is_readonly(mp))
|
|
return -EROFS;
|
|
|
|
if (copy_from_user(&fsop, arg, sizeof(fsop)))
|
|
return -EFAULT;
|
|
|
|
error = mnt_want_write_file(filp);
|
|
if (error)
|
|
return error;
|
|
error = xfs_reserve_blocks(mp, fsop.resblks);
|
|
mnt_drop_write_file(filp);
|
|
if (error)
|
|
return error;
|
|
}
|
|
|
|
spin_lock(&mp->m_sb_lock);
|
|
fsop.resblks = mp->m_resblks;
|
|
fsop.resblks_avail = mp->m_resblks_avail;
|
|
spin_unlock(&mp->m_sb_lock);
|
|
|
|
if (copy_to_user(arg, &fsop, sizeof(fsop)))
|
|
return -EFAULT;
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
xfs_ioctl_fs_counts(
|
|
struct xfs_mount *mp,
|
|
struct xfs_fsop_counts __user *uarg)
|
|
{
|
|
struct xfs_fsop_counts out = {
|
|
.allocino = percpu_counter_read_positive(&mp->m_icount),
|
|
.freeino = percpu_counter_read_positive(&mp->m_ifree),
|
|
.freedata = percpu_counter_read_positive(&mp->m_fdblocks) -
|
|
xfs_fdblocks_unavailable(mp),
|
|
.freertx = percpu_counter_read_positive(&mp->m_frextents),
|
|
};
|
|
|
|
if (copy_to_user(uarg, &out, sizeof(out)))
|
|
return -EFAULT;
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* These long-unused ioctls were removed from the official ioctl API in 5.17,
|
|
* but retain these definitions so that we can log warnings about them.
|
|
*/
|
|
#define XFS_IOC_ALLOCSP _IOW ('X', 10, struct xfs_flock64)
|
|
#define XFS_IOC_FREESP _IOW ('X', 11, struct xfs_flock64)
|
|
#define XFS_IOC_ALLOCSP64 _IOW ('X', 36, struct xfs_flock64)
|
|
#define XFS_IOC_FREESP64 _IOW ('X', 37, struct xfs_flock64)
|
|
|
|
/*
|
|
* Note: some of the ioctl's return positive numbers as a
|
|
* byte count indicating success, such as readlink_by_handle.
|
|
* So we don't "sign flip" like most other routines. This means
|
|
* true errors need to be returned as a negative value.
|
|
*/
|
|
long
|
|
xfs_file_ioctl(
|
|
struct file *filp,
|
|
unsigned int cmd,
|
|
unsigned long p)
|
|
{
|
|
struct inode *inode = file_inode(filp);
|
|
struct xfs_inode *ip = XFS_I(inode);
|
|
struct xfs_mount *mp = ip->i_mount;
|
|
void __user *arg = (void __user *)p;
|
|
int error;
|
|
|
|
trace_xfs_file_ioctl(ip);
|
|
|
|
switch (cmd) {
|
|
case FITRIM:
|
|
return xfs_ioc_trim(mp, arg);
|
|
case FS_IOC_GETFSLABEL:
|
|
return xfs_ioc_getlabel(mp, arg);
|
|
case FS_IOC_SETFSLABEL:
|
|
return xfs_ioc_setlabel(filp, mp, arg);
|
|
case XFS_IOC_ALLOCSP:
|
|
case XFS_IOC_FREESP:
|
|
case XFS_IOC_ALLOCSP64:
|
|
case XFS_IOC_FREESP64:
|
|
xfs_warn_once(mp,
|
|
"%s should use fallocate; XFS_IOC_{ALLOC,FREE}SP ioctl unsupported",
|
|
current->comm);
|
|
return -ENOTTY;
|
|
case XFS_IOC_DIOINFO: {
|
|
struct xfs_buftarg *target = xfs_inode_buftarg(ip);
|
|
struct dioattr da;
|
|
|
|
da.d_mem = da.d_miniosz = target->bt_logical_sectorsize;
|
|
da.d_maxiosz = INT_MAX & ~(da.d_miniosz - 1);
|
|
|
|
if (copy_to_user(arg, &da, sizeof(da)))
|
|
return -EFAULT;
|
|
return 0;
|
|
}
|
|
|
|
case XFS_IOC_FSBULKSTAT_SINGLE:
|
|
case XFS_IOC_FSBULKSTAT:
|
|
case XFS_IOC_FSINUMBERS:
|
|
return xfs_ioc_fsbulkstat(filp, cmd, arg);
|
|
|
|
case XFS_IOC_BULKSTAT:
|
|
return xfs_ioc_bulkstat(filp, cmd, arg);
|
|
case XFS_IOC_INUMBERS:
|
|
return xfs_ioc_inumbers(mp, cmd, arg);
|
|
|
|
case XFS_IOC_FSGEOMETRY_V1:
|
|
return xfs_ioc_fsgeometry(mp, arg, 3);
|
|
case XFS_IOC_FSGEOMETRY_V4:
|
|
return xfs_ioc_fsgeometry(mp, arg, 4);
|
|
case XFS_IOC_FSGEOMETRY:
|
|
return xfs_ioc_fsgeometry(mp, arg, 5);
|
|
|
|
case XFS_IOC_AG_GEOMETRY:
|
|
return xfs_ioc_ag_geometry(mp, arg);
|
|
|
|
case XFS_IOC_GETVERSION:
|
|
return put_user(inode->i_generation, (int __user *)arg);
|
|
|
|
case XFS_IOC_FSGETXATTRA:
|
|
return xfs_ioc_fsgetxattra(ip, arg);
|
|
case XFS_IOC_GETPARENTS:
|
|
return xfs_ioc_getparents(filp, arg);
|
|
case XFS_IOC_GETPARENTS_BY_HANDLE:
|
|
return xfs_ioc_getparents_by_handle(filp, arg);
|
|
case XFS_IOC_GETBMAP:
|
|
case XFS_IOC_GETBMAPA:
|
|
case XFS_IOC_GETBMAPX:
|
|
return xfs_ioc_getbmap(filp, cmd, arg);
|
|
|
|
case FS_IOC_GETFSMAP:
|
|
return xfs_ioc_getfsmap(ip, arg);
|
|
|
|
case XFS_IOC_SCRUBV_METADATA:
|
|
return xfs_ioc_scrubv_metadata(filp, arg);
|
|
case XFS_IOC_SCRUB_METADATA:
|
|
return xfs_ioc_scrub_metadata(filp, arg);
|
|
|
|
case XFS_IOC_FD_TO_HANDLE:
|
|
case XFS_IOC_PATH_TO_HANDLE:
|
|
case XFS_IOC_PATH_TO_FSHANDLE: {
|
|
xfs_fsop_handlereq_t hreq;
|
|
|
|
if (copy_from_user(&hreq, arg, sizeof(hreq)))
|
|
return -EFAULT;
|
|
return xfs_find_handle(cmd, &hreq);
|
|
}
|
|
case XFS_IOC_OPEN_BY_HANDLE: {
|
|
xfs_fsop_handlereq_t hreq;
|
|
|
|
if (copy_from_user(&hreq, arg, sizeof(xfs_fsop_handlereq_t)))
|
|
return -EFAULT;
|
|
return xfs_open_by_handle(filp, &hreq);
|
|
}
|
|
|
|
case XFS_IOC_READLINK_BY_HANDLE: {
|
|
xfs_fsop_handlereq_t hreq;
|
|
|
|
if (copy_from_user(&hreq, arg, sizeof(xfs_fsop_handlereq_t)))
|
|
return -EFAULT;
|
|
return xfs_readlink_by_handle(filp, &hreq);
|
|
}
|
|
case XFS_IOC_ATTRLIST_BY_HANDLE:
|
|
return xfs_attrlist_by_handle(filp, arg);
|
|
|
|
case XFS_IOC_ATTRMULTI_BY_HANDLE:
|
|
return xfs_attrmulti_by_handle(filp, arg);
|
|
|
|
case XFS_IOC_SWAPEXT: {
|
|
struct xfs_swapext sxp;
|
|
|
|
if (copy_from_user(&sxp, arg, sizeof(xfs_swapext_t)))
|
|
return -EFAULT;
|
|
error = mnt_want_write_file(filp);
|
|
if (error)
|
|
return error;
|
|
error = xfs_ioc_swapext(&sxp);
|
|
mnt_drop_write_file(filp);
|
|
return error;
|
|
}
|
|
|
|
case XFS_IOC_FSCOUNTS:
|
|
return xfs_ioctl_fs_counts(mp, arg);
|
|
|
|
case XFS_IOC_SET_RESBLKS:
|
|
case XFS_IOC_GET_RESBLKS:
|
|
return xfs_ioctl_getset_resblocks(filp, cmd, arg);
|
|
|
|
case XFS_IOC_FSGROWFSDATA: {
|
|
struct xfs_growfs_data in;
|
|
|
|
if (copy_from_user(&in, arg, sizeof(in)))
|
|
return -EFAULT;
|
|
|
|
error = mnt_want_write_file(filp);
|
|
if (error)
|
|
return error;
|
|
error = xfs_growfs_data(mp, &in);
|
|
mnt_drop_write_file(filp);
|
|
return error;
|
|
}
|
|
|
|
case XFS_IOC_FSGROWFSLOG: {
|
|
struct xfs_growfs_log in;
|
|
|
|
if (copy_from_user(&in, arg, sizeof(in)))
|
|
return -EFAULT;
|
|
|
|
error = mnt_want_write_file(filp);
|
|
if (error)
|
|
return error;
|
|
error = xfs_growfs_log(mp, &in);
|
|
mnt_drop_write_file(filp);
|
|
return error;
|
|
}
|
|
|
|
case XFS_IOC_FSGROWFSRT: {
|
|
xfs_growfs_rt_t in;
|
|
|
|
if (copy_from_user(&in, arg, sizeof(in)))
|
|
return -EFAULT;
|
|
|
|
error = mnt_want_write_file(filp);
|
|
if (error)
|
|
return error;
|
|
error = xfs_growfs_rt(mp, &in);
|
|
mnt_drop_write_file(filp);
|
|
return error;
|
|
}
|
|
|
|
case XFS_IOC_GOINGDOWN: {
|
|
uint32_t in;
|
|
|
|
if (!capable(CAP_SYS_ADMIN))
|
|
return -EPERM;
|
|
|
|
if (get_user(in, (uint32_t __user *)arg))
|
|
return -EFAULT;
|
|
|
|
return xfs_fs_goingdown(mp, in);
|
|
}
|
|
|
|
case XFS_IOC_ERROR_INJECTION: {
|
|
xfs_error_injection_t in;
|
|
|
|
if (!capable(CAP_SYS_ADMIN))
|
|
return -EPERM;
|
|
|
|
if (copy_from_user(&in, arg, sizeof(in)))
|
|
return -EFAULT;
|
|
|
|
return xfs_errortag_add(mp, in.errtag);
|
|
}
|
|
|
|
case XFS_IOC_ERROR_CLEARALL:
|
|
if (!capable(CAP_SYS_ADMIN))
|
|
return -EPERM;
|
|
|
|
return xfs_errortag_clearall(mp);
|
|
|
|
case XFS_IOC_FREE_EOFBLOCKS: {
|
|
struct xfs_fs_eofblocks eofb;
|
|
struct xfs_icwalk icw;
|
|
|
|
if (!capable(CAP_SYS_ADMIN))
|
|
return -EPERM;
|
|
|
|
if (xfs_is_readonly(mp))
|
|
return -EROFS;
|
|
|
|
if (copy_from_user(&eofb, arg, sizeof(eofb)))
|
|
return -EFAULT;
|
|
|
|
error = xfs_fs_eofblocks_from_user(&eofb, &icw);
|
|
if (error)
|
|
return error;
|
|
|
|
trace_xfs_ioc_free_eofblocks(mp, &icw, _RET_IP_);
|
|
|
|
sb_start_write(mp->m_super);
|
|
error = xfs_blockgc_free_space(mp, &icw);
|
|
sb_end_write(mp->m_super);
|
|
return error;
|
|
}
|
|
|
|
case XFS_IOC_EXCHANGE_RANGE:
|
|
return xfs_ioc_exchange_range(filp, arg);
|
|
case XFS_IOC_START_COMMIT:
|
|
return xfs_ioc_start_commit(filp, arg);
|
|
case XFS_IOC_COMMIT_RANGE:
|
|
return xfs_ioc_commit_range(filp, arg);
|
|
|
|
default:
|
|
return -ENOTTY;
|
|
}
|
|
}
|