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da92d5cbb3
Provide a common zfs_file_* interface which can be implemented on all platforms to perform normal file access from either the kernel module or the libzpool library. This allows all non-portable vnode_t usage in the common code to be replaced by the new portable zfs_file_t. The associated vnode and kobj compatibility functions, types, and macros have been removed from the SPL. Moving forward, vnodes should only be used in platform specific code when provided by the native operating system. Reviewed-by: Sean Eric Fagan <sef@ixsystems.com> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Reviewed-by: Igor Kozhukhov <igor@dilos.org> Reviewed-by: Jorgen Lundman <lundman@lundman.net> Signed-off-by: Matt Macy <mmacy@FreeBSD.org> Closes #9556
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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zfs_file_put(fd);
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}
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