/* * Copyright (c) 2000 Apple Computer, Inc. All rights reserved. * * @APPLE_LICENSE_HEADER_START@ * * The contents of this file constitute Original Code as defined in and * are subject to the Apple Public Source License Version 1.1 (the * "License"). You may not use this file except in compliance with the * License. Please obtain a copy of the License at * http://www.apple.com/publicsource and read it before using this file. * * This Original Code and all software distributed under the License are * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the * License for the specific language governing rights and limitations * under the License. * * @APPLE_LICENSE_HEADER_END@ */ /* Copyright (c) 1995 NeXT Computer, Inc. All Rights Reserved */ /* * Copyright (c) 1992, 1993, 1995 * The Regents of the University of California. All rights reserved. * * This code is derived from software donated to Berkeley by * Jan-Simon Pendry. * * 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. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the University of * California, Berkeley and its contributors. * 4. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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. * * @(#)portal_vfsops.c 8.11 (Berkeley) 5/14/95 * * @(#)portal_vfsops.c 8.6 (Berkeley) 1/21/94 */ /* * Portal Filesystem */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include int portal_init(vfsp) struct vfsconf *vfsp; { return (0); } /* * Mount the per-process file descriptors (/dev/fd) */ int portal_mount(mp, path, data, ndp, p) struct mount *mp; char *path; caddr_t data; struct nameidata *ndp; struct proc *p; { struct file *fp; struct portal_args args; struct portalmount *fmp; struct socket *so; struct vnode *rvp; u_int size; int error; struct portalnode *pnp; /* * Update is a no-op */ if (mp->mnt_flag & MNT_UPDATE) return (EOPNOTSUPP); if (error = copyin(data, (caddr_t) &args, sizeof(struct portal_args))) return (error); if (error = getsock(p->p_fd, args.pa_socket, &fp)) return (error); so = (struct socket *) fp->f_data; if (so->so_proto->pr_domain->dom_family != AF_UNIX) return (ESOCKTNOSUPPORT); fmp = (struct portalmount *) _MALLOC(sizeof(struct portalmount), M_UFSMNT, M_WAITOK); /* XXX */ MALLOC(pnp, void *, sizeof(struct portalnode), M_TEMP, M_WAITOK); error = getnewvnode(VT_PORTAL, mp, portal_vnodeop_p, &rvp); /* XXX */ if (error) { FREE(pnp, M_TEMP); FREE(fmp, M_UFSMNT); return (error); } rvp->v_data = pnp; rvp->v_type = VDIR; rvp->v_flag |= VROOT; VTOPORTAL(rvp)->pt_arg = 0; VTOPORTAL(rvp)->pt_size = 0; VTOPORTAL(rvp)->pt_fileid = PORTAL_ROOTFILEID; fmp->pm_root = rvp; fmp->pm_server = fp; (void)fref(fp); mp->mnt_flag |= MNT_LOCAL; mp->mnt_data = (qaddr_t) fmp; vfs_getnewfsid(mp); (void)copyinstr(path, mp->mnt_stat.f_mntonname, MNAMELEN - 1, &size); bzero(mp->mnt_stat.f_mntonname + size, MNAMELEN - size); (void)copyinstr(args.pa_config, mp->mnt_stat.f_mntfromname, MNAMELEN - 1, &size); bzero(mp->mnt_stat.f_mntfromname + size, MNAMELEN - size); #ifdef notdef bzero(mp->mnt_stat.f_mntfromname, MNAMELEN); bcopy("portal", mp->mnt_stat.f_mntfromname, sizeof("portal")); #endif return (0); } int portal_start(mp, flags, p) struct mount *mp; int flags; struct proc *p; { return (0); } int portal_unmount(mp, mntflags, p) struct mount *mp; int mntflags; struct proc *p; { struct vnode *rootvp = VFSTOPORTAL(mp)->pm_root; int error, flags = 0; if (mntflags & MNT_FORCE) flags |= FORCECLOSE; /* * Clear out buffer cache. I don't think we * ever get anything cached at this level at the * moment, but who knows... */ #ifdef notyet mntflushbuf(mp, 0); if (mntinvalbuf(mp, 1)) return (EBUSY); #endif if (rootvp->v_usecount > 1) return (EBUSY); if (error = vflush(mp, rootvp, flags)) return (error); /* * Release reference on underlying root vnode */ vrele(rootvp); /* * And blow it away for future re-use */ vgone(rootvp); /* * Shutdown the socket. This will cause the select in the * daemon to wake up, and then the accept will get ECONNABORTED * which it interprets as a request to go and bury itself. */ thread_funnel_switch(KERNEL_FUNNEL, NETWORK_FUNNEL); soshutdown((struct socket *) VFSTOPORTAL(mp)->pm_server->f_data, 2); thread_funnel_switch(NETWORK_FUNNEL, KERNEL_FUNNEL); /* * Discard reference to underlying file. Must call closef because * this may be the last reference. */ closef(VFSTOPORTAL(mp)->pm_server, (struct proc *) 0); /* * Finally, throw away the portalmount structure */ _FREE(mp->mnt_data, M_UFSMNT); /* XXX */ mp->mnt_data = 0; return (0); } int portal_root(mp, vpp) struct mount *mp; struct vnode **vpp; { struct proc *p = current_proc(); /* XXX */ struct vnode *vp; /* * Return locked reference to root. */ vp = VFSTOPORTAL(mp)->pm_root; VREF(vp); vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, p); *vpp = vp; return (0); } int portal_statfs(mp, sbp, p) struct mount *mp; struct statfs *sbp; struct proc *p; { sbp->f_flags = 0; sbp->f_bsize = DEV_BSIZE; sbp->f_iosize = DEV_BSIZE; sbp->f_blocks = 2; /* 1K to keep df happy */ sbp->f_bfree = 0; sbp->f_bavail = 0; sbp->f_files = 1; /* Allow for "." */ sbp->f_ffree = 0; /* See comments above */ if (sbp != &mp->mnt_stat) { sbp->f_type = mp->mnt_vfc->vfc_typenum; bcopy(&mp->mnt_stat.f_fsid, &sbp->f_fsid, sizeof(sbp->f_fsid)); bcopy(mp->mnt_stat.f_mntonname, sbp->f_mntonname, MNAMELEN); bcopy(mp->mnt_stat.f_mntfromname, sbp->f_mntfromname, MNAMELEN); } return (0); } #define portal_fhtovp ((int (*) __P((struct mount *, struct fid *, \ struct mbuf *, struct vnode **, int *, struct ucred **)))eopnotsupp) #define portal_quotactl ((int (*) __P((struct mount *, int, uid_t, caddr_t, \ struct proc *)))eopnotsupp) #define portal_sync ((int (*) __P((struct mount *, int, struct ucred *, \ struct proc *)))nullop) #define portal_sysctl ((int (*) __P((int *, u_int, void *, size_t *, void *, \ size_t, struct proc *)))eopnotsupp) #define portal_vget ((int (*) __P((struct mount *, ino_t, struct vnode **))) \ eopnotsupp) #define portal_vptofh ((int (*) __P((struct vnode *, struct fid *)))eopnotsupp) struct vfsops portal_vfsops = { portal_mount, portal_start, portal_unmount, portal_root, portal_quotactl, portal_statfs, portal_sync, portal_vget, portal_fhtovp, portal_vptofh, portal_init, portal_sysctl, };