1 /* $OpenBSD: tmpfs_fifoops.c,v 1.5 2020/01/20 23:21:56 claudio Exp $ */ 2 /* $NetBSD: tmpfs_fifoops.c,v 1.9 2011/05/24 20:17:49 rmind Exp $ */ 3 4 /* 5 * Copyright (c) 2005 The NetBSD Foundation, Inc. 6 * Copyright (c) 2013 Pedro Martelletto 7 * All rights reserved. 8 * 9 * This code is derived from software contributed to The NetBSD Foundation 10 * by Julio M. Merino Vidal, developed as part of Google's Summer of Code 11 * 2005 program. 12 * 13 * Redistribution and use in source and binary forms, with or without 14 * modification, are permitted provided that the following conditions 15 * are met: 16 * 1. Redistributions of source code must retain the above copyright 17 * notice, this list of conditions and the following disclaimer. 18 * 2. Redistributions in binary form must reproduce the above copyright 19 * notice, this list of conditions and the following disclaimer in the 20 * documentation and/or other materials provided with the distribution. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 23 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 24 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 25 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 26 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 27 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 28 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 29 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 30 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 31 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 32 * POSSIBILITY OF SUCH DAMAGE. 33 */ 34 35 /* 36 * tmpfs vnode interface for named pipes. 37 */ 38 39 #include <sys/param.h> 40 #include <sys/vnode.h> 41 42 #include <tmpfs/tmpfs.h> 43 #include <miscfs/fifofs/fifo.h> 44 #include <tmpfs/tmpfs_vnops.h> 45 46 int tmpfs_fifo_close (void *); 47 int tmpfs_fifo_read (void *); 48 int tmpfs_fifo_write (void *); 49 int tmpfs_fifo_fsync (void *); 50 51 /* 52 * vnode operations vector used for fifos stored in a tmpfs file system. 53 */ 54 55 const struct vops tmpfs_fifovops = { 56 .vop_lookup = vop_generic_lookup, 57 .vop_create = fifo_badop, 58 .vop_mknod = fifo_badop, 59 .vop_open = fifo_open, 60 .vop_close = fifo_close, 61 .vop_access = tmpfs_access, 62 .vop_getattr = tmpfs_getattr, 63 .vop_setattr = tmpfs_setattr, 64 .vop_read = tmpfs_fifo_read, 65 .vop_write = tmpfs_fifo_write, 66 .vop_ioctl = fifo_ioctl, 67 .vop_poll = fifo_poll, 68 .vop_kqfilter = fifo_kqfilter, 69 .vop_revoke = vop_generic_revoke, 70 .vop_fsync = tmpfs_fifo_fsync, 71 .vop_remove = fifo_badop, 72 .vop_link = fifo_badop, 73 .vop_rename = fifo_badop, 74 .vop_mkdir = fifo_badop, 75 .vop_rmdir = fifo_badop, 76 .vop_symlink = fifo_badop, 77 .vop_readdir = fifo_badop, 78 .vop_readlink = fifo_badop, 79 .vop_abortop = fifo_badop, 80 .vop_inactive = tmpfs_inactive, 81 .vop_reclaim = tmpfs_reclaim, 82 .vop_lock = tmpfs_lock, 83 .vop_unlock = tmpfs_unlock, 84 .vop_bmap = vop_generic_bmap, 85 .vop_strategy = fifo_badop, 86 .vop_print = tmpfs_print, 87 .vop_islocked = tmpfs_islocked, 88 .vop_pathconf = fifo_pathconf, 89 .vop_advlock = fifo_advlock, 90 .vop_bwrite = tmpfs_bwrite, 91 }; 92 93 int 94 tmpfs_fifo_read(void *v) 95 { 96 struct vop_read_args /* { 97 struct vnode *a_vp; 98 struct uio *a_uio; 99 int a_ioflag; 100 kauth_cred_t a_cred; 101 } */ *ap = v; 102 struct vnode *vp = ap->a_vp; 103 104 tmpfs_update(VP_TO_TMPFS_NODE(vp), TMPFS_NODE_ACCESSED); 105 return (fifo_read(v)); 106 } 107 108 int 109 tmpfs_fifo_write(void *v) 110 { 111 struct vop_write_args /* { 112 struct vnode *a_vp; 113 struct uio *a_uio; 114 int a_ioflag; 115 kauth_cred_t a_cred; 116 } */ *ap = v; 117 struct vnode *vp = ap->a_vp; 118 119 tmpfs_update(VP_TO_TMPFS_NODE(vp), TMPFS_NODE_MODIFIED); 120 return (fifo_write(v)); 121 } 122 123 int 124 tmpfs_fifo_fsync(void *v) 125 { 126 return (0); 127 } 128