121 lines
3.6 KiB
C
121 lines
3.6 KiB
C
/* $OpenBSD: tmpfs_specops.c,v 1.9 2022/06/26 05:20:42 visa Exp $ */
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/* $NetBSD: tmpfs_specops.c,v 1.10 2011/05/24 20:17:49 rmind Exp $ */
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/*
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* Copyright (c) 2005 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Julio M. Merino Vidal, developed as part of Google's Summer of Code
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* 2005 program.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* tmpfs vnode interface for special devices.
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*/
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#include <sys/param.h>
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#include <sys/vnode.h>
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#include <sys/specdev.h>
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#include <tmpfs/tmpfs_vnops.h>
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#include <tmpfs/tmpfs.h>
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int tmpfs_spec_read (void *);
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int tmpfs_spec_write (void *);
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/*
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* vnode operations vector used for special devices stored in a tmpfs
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* file system.
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*/
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const struct vops tmpfs_specvops = {
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.vop_close = spec_close,
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.vop_access = tmpfs_access,
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.vop_getattr = tmpfs_getattr,
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.vop_setattr = tmpfs_setattr,
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.vop_read = tmpfs_spec_read,
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.vop_write = tmpfs_spec_write,
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.vop_fsync = spec_fsync,
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.vop_inactive = tmpfs_inactive,
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.vop_reclaim = tmpfs_reclaim,
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.vop_lock = tmpfs_lock,
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.vop_unlock = tmpfs_unlock,
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.vop_print = tmpfs_print,
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.vop_islocked = tmpfs_islocked,
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/* keep in sync with spec_vops */
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.vop_lookup = vop_generic_lookup,
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.vop_create = vop_generic_badop,
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.vop_mknod = vop_generic_badop,
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.vop_open = spec_open,
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.vop_ioctl = spec_ioctl,
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.vop_kqfilter = spec_kqfilter,
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.vop_revoke = vop_generic_revoke,
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.vop_remove = vop_generic_badop,
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.vop_link = vop_generic_badop,
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.vop_rename = vop_generic_badop,
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.vop_mkdir = vop_generic_badop,
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.vop_rmdir = vop_generic_badop,
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.vop_symlink = vop_generic_badop,
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.vop_readdir = vop_generic_badop,
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.vop_readlink = vop_generic_badop,
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.vop_abortop = vop_generic_badop,
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.vop_bmap = vop_generic_bmap,
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.vop_strategy = spec_strategy,
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.vop_pathconf = spec_pathconf,
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.vop_advlock = spec_advlock,
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.vop_bwrite = vop_generic_bwrite,
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};
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int
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tmpfs_spec_read(void *v)
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{
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struct vop_read_args /* {
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struct vnode *a_vp;
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struct uio *a_uio;
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int a_ioflag;
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kauth_cred_t a_cred;
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} */ *ap = v;
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struct vnode *vp = ap->a_vp;
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tmpfs_update(VP_TO_TMPFS_NODE(vp), TMPFS_NODE_ACCESSED);
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return (spec_read(ap));
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}
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int
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tmpfs_spec_write(void *v)
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{
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struct vop_write_args /* {
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struct vnode *a_vp;
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struct uio *a_uio;
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int a_ioflag;
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kauth_cred_t a_cred;
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} */ *ap = v;
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struct vnode *vp = ap->a_vp;
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tmpfs_update(VP_TO_TMPFS_NODE(vp), TMPFS_NODE_MODIFIED);
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return (spec_write(ap));
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}
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