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08f530c699
Only pass the file descriptor to make zfsdev_get_miror() portable. Reviewed-by: George Melikov <mail@gmelikov.ru> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Matt Macy <mmacy@FreeBSD.org> Closes #9466
65 lines
1.7 KiB
C
65 lines
1.7 KiB
C
/*
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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 (the "License").
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* You may not use this file except in compliance 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 http://www.opensolaris.org/os/licensing.
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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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* Copyright (c) 2013 by Delphix. All rights reserved.
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*/
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#include <sys/types.h>
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#include <sys/param.h>
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#include <sys/errno.h>
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#include <sys/kmem.h>
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#include <sys/sunddi.h>
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#include <sys/zfs_ioctl.h>
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#include <sys/zfs_onexit.h>
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/*
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* Consumers might need to operate by minor number instead of fd, since
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* they might be running in another thread (e.g. txg_sync_thread). Callers
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* of this function must call zfs_onexit_fd_rele() when they're finished
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* using the minor number.
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*/
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int
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zfs_onexit_fd_hold(int fd, minor_t *minorp)
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{
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zfs_onexit_t *zo = NULL;
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int error;
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error = zfsdev_getminor(fd, minorp);
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if (error) {
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zfs_onexit_fd_rele(fd);
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return (error);
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}
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zo = zfsdev_get_state(*minorp, ZST_ONEXIT);
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if (zo == NULL) {
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zfs_onexit_fd_rele(fd);
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return (SET_ERROR(EBADF));
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}
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return (0);
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}
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void
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zfs_onexit_fd_rele(int fd)
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{
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releasef(fd);
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}
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