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71 lines
1.8 KiB
C
71 lines
1.8 KiB
C
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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 (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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static int
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zfs_onexit_minor_to_state(minor_t minor, zfs_onexit_t **zo)
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{
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*zo = zfsdev_get_state(minor, ZST_ONEXIT);
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if (*zo == NULL)
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return (SET_ERROR(EBADF));
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return (0);
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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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file_t *fp, *tmpfp;
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zfs_onexit_t *zo;
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void *data;
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int error;
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if ((error = zfs_file_get(fd, &fp)))
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return (error);
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tmpfp = curthread->td_fpop;
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curthread->td_fpop = fp;
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error = devfs_get_cdevpriv(&data);
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if (error == 0)
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*minorp = (minor_t)(uintptr_t)data;
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curthread->td_fpop = tmpfp;
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if (error != 0)
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return (SET_ERROR(EBADF));
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return (zfs_onexit_minor_to_state(*minorp, &zo));
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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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zfs_file_put(fd);
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}
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