/* $OpenBSD: tmpfs_specops.c,v 1.7 2021/06/29 16:15:37 claudio 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 #include #include #include #include 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 = spec_badop, .vop_mknod = spec_badop, .vop_open = spec_open, .vop_ioctl = spec_ioctl, .vop_poll = spec_poll, .vop_kqfilter = spec_kqfilter, .vop_revoke = vop_generic_revoke, .vop_remove = spec_badop, .vop_link = spec_badop, .vop_rename = spec_badop, .vop_mkdir = spec_badop, .vop_rmdir = spec_badop, .vop_symlink = spec_badop, .vop_readdir = spec_badop, .vop_readlink = spec_badop, .vop_abortop = spec_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)); }