IABSD.fr/src/sys/tmpfs/tmpfs_specops.c

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• Author : visa
  Date : 2022-06-26 05:20:42
  Hash : 5c9fbd3c
  Message : Remove unused VOP_POLL(). OK mpi@

• sys/tmpfs/tmpfs_specops.c

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