1170808Sdelphij/* $NetBSD: tmpfs_fifoops.c,v 1.5 2005/12/11 12:24:29 christos Exp $ */ 2170808Sdelphij 3182739Sdelphij/*- 4170808Sdelphij * Copyright (c) 2005 The NetBSD Foundation, Inc. 5170808Sdelphij * All rights reserved. 6170808Sdelphij * 7170808Sdelphij * This code is derived from software contributed to The NetBSD Foundation 8170808Sdelphij * by Julio M. Merino Vidal, developed as part of Google's Summer of Code 9170808Sdelphij * 2005 program. 10170808Sdelphij * 11170808Sdelphij * Redistribution and use in source and binary forms, with or without 12170808Sdelphij * modification, are permitted provided that the following conditions 13170808Sdelphij * are met: 14170808Sdelphij * 1. Redistributions of source code must retain the above copyright 15170808Sdelphij * notice, this list of conditions and the following disclaimer. 16170808Sdelphij * 2. Redistributions in binary form must reproduce the above copyright 17170808Sdelphij * notice, this list of conditions and the following disclaimer in the 18170808Sdelphij * documentation and/or other materials provided with the distribution. 19170808Sdelphij * 20170808Sdelphij * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 21170808Sdelphij * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 22170808Sdelphij * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 23170808Sdelphij * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 24170808Sdelphij * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 25170808Sdelphij * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 26170808Sdelphij * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 27170808Sdelphij * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 28170808Sdelphij * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 29170808Sdelphij * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 30170808Sdelphij * POSSIBILITY OF SUCH DAMAGE. 31170808Sdelphij */ 32170808Sdelphij 33170808Sdelphij/* 34170808Sdelphij * tmpfs vnode interface for named pipes. 35170808Sdelphij */ 36170808Sdelphij#include <sys/cdefs.h> 37170808Sdelphij __FBSDID("$FreeBSD$"); 38170808Sdelphij 39170808Sdelphij#include <sys/param.h> 40170808Sdelphij#include <sys/filedesc.h> 41170808Sdelphij#include <sys/proc.h> 42170808Sdelphij#include <sys/vnode.h> 43170808Sdelphij 44170808Sdelphij#include <vm/vm.h> 45170808Sdelphij#include <vm/vm_object.h> 46170808Sdelphij 47170808Sdelphij#include <fs/tmpfs/tmpfs.h> 48170808Sdelphij#include <fs/tmpfs/tmpfs_fifoops.h> 49170808Sdelphij#include <fs/tmpfs/tmpfs_vnops.h> 50170808Sdelphij 51170808Sdelphij/* --------------------------------------------------------------------- */ 52170808Sdelphij 53171069Sdelphijstatic int 54170808Sdelphijtmpfs_fifo_kqfilter(struct vop_kqfilter_args *ap) 55170808Sdelphij{ 56170808Sdelphij struct vnode *vp; 57170808Sdelphij struct tmpfs_node *node; 58170808Sdelphij 59170808Sdelphij vp = ap->a_vp; 60170808Sdelphij node = VP_TO_TMPFS_NODE(vp); 61170808Sdelphij 62170808Sdelphij switch (ap->a_kn->kn_filter){ 63170808Sdelphij case EVFILT_READ: 64171070Sdelphij node->tn_status |= TMPFS_NODE_ACCESSED; 65170808Sdelphij break; 66170808Sdelphij case EVFILT_WRITE: 67170808Sdelphij node->tn_status |= TMPFS_NODE_MODIFIED; 68170808Sdelphij break; 69170808Sdelphij } 70171070Sdelphij 71170808Sdelphij return fifo_specops.vop_kqfilter(ap); 72170808Sdelphij} 73170808Sdelphij 74170808Sdelphij/* --------------------------------------------------------------------- */ 75170808Sdelphij 76171069Sdelphijstatic int 77170808Sdelphijtmpfs_fifo_close(struct vop_close_args *v) 78170808Sdelphij{ 79170808Sdelphij struct tmpfs_node *node; 80170808Sdelphij node = VP_TO_TMPFS_NODE(v->a_vp); 81170808Sdelphij node->tn_status |= TMPFS_NODE_ACCESSED; 82171070Sdelphij 83170808Sdelphij tmpfs_update(v->a_vp); 84170808Sdelphij return fifo_specops.vop_close(v); 85170808Sdelphij} 86171069Sdelphij 87171069Sdelphij/* 88171069Sdelphij * vnode operations vector used for fifos stored in a tmpfs file system. 89171069Sdelphij */ 90171069Sdelphijstruct vop_vector tmpfs_fifoop_entries = { 91171069Sdelphij .vop_default = &fifo_specops, 92171069Sdelphij .vop_close = tmpfs_fifo_close, 93171069Sdelphij .vop_reclaim = tmpfs_reclaim, 94171069Sdelphij .vop_access = tmpfs_access, 95171069Sdelphij .vop_getattr = tmpfs_getattr, 96171069Sdelphij .vop_setattr = tmpfs_setattr, 97171069Sdelphij .vop_kqfilter = tmpfs_fifo_kqfilter, 98171069Sdelphij}; 99171069Sdelphij 100