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21d5f25724
Use statx to verify that path-based unmounts proceed only if the mountpoint reported by statx matches the MNTTAB entry reported by libzfs, aborting the operation if they differ. Align `zfs umount /path` behavior with `zfs umount dataset`. Reviewed-by: Alexander Motin <mav@FreeBSD.org> Signed-off-by: Ameer Hamza <ahamza@ixsystems.com> Closes #17481
57 lines
1.5 KiB
C
57 lines
1.5 KiB
C
// SPDX-License-Identifier: CDDL-1.0
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/*
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* CDDL HEADER START
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*
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* The contents of this file are subject to the terms of the
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* Common Development and Distribution License, Version 1.0 only
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* (the "License"). You may not use this file except in compliance
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* with the License.
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*
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* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
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* or https://opensource.org/licenses/CDDL-1.0.
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* See the License for the specific language governing permissions
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* and limitations under the License.
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*
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* When distributing Covered Code, include this CDDL HEADER in each
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* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
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* If applicable, add the following below this CDDL HEADER, with the
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* fields enclosed by brackets "[]" replaced with your own identifying
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* information: Portions Copyright [yyyy] [name of copyright owner]
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*
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* CDDL HEADER END
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*/
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/*
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* Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
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*/
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#ifndef _LIBSPL_SYS_STAT_H
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#define _LIBSPL_SYS_STAT_H
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#include_next <sys/stat.h>
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#include <sys/mount.h> /* for BLKGETSIZE64 */
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#ifdef HAVE_STATX
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#include <fcntl.h>
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#include <linux/stat.h>
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#endif
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/*
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* Emulate Solaris' behavior of returning the block device size in fstat64().
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*/
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static inline int
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fstat64_blk(int fd, struct stat64 *st)
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{
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if (fstat64(fd, st) == -1)
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return (-1);
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/* In Linux we need to use an ioctl to get the size of a block device */
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if (S_ISBLK(st->st_mode)) {
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if (ioctl(fd, BLKGETSIZE64, &st->st_size) != 0)
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return (-1);
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}
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return (0);
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}
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#endif /* _LIBSPL_SYS_STAT_H */
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