diff options
Diffstat (limited to 'sys/miscfs/portal')
| -rw-r--r-- | sys/miscfs/portal/portal.h | 71 | ||||
| -rw-r--r-- | sys/miscfs/portal/portal_vfsops.c | 257 | ||||
| -rw-r--r-- | sys/miscfs/portal/portal_vnops.c | 591 |
3 files changed, 0 insertions, 919 deletions
diff --git a/sys/miscfs/portal/portal.h b/sys/miscfs/portal/portal.h deleted file mode 100644 index ec46662..0000000 --- a/sys/miscfs/portal/portal.h +++ /dev/null @@ -1,71 +0,0 @@ -/* - * Copyright (c) 1992, 1993 - * 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.h 8.4 (Berkeley) 1/21/94 - * - * $FreeBSD$ - */ - -struct portal_args { - char *pa_config; /* Config file */ - int pa_socket; /* Socket to server */ -}; - -struct portal_cred { - int pcr_flag; /* File open mode */ - uid_t pcr_uid; /* From ucred */ - short pcr_ngroups; /* From ucred */ - gid_t pcr_groups[NGROUPS]; /* From ucred */ -}; - -#ifdef _KERNEL -struct portalmount { - struct vnode *pm_root; /* Root node */ - struct file *pm_server; /* Held reference to server socket */ -}; - -struct portalnode { - int pt_size; /* Length of Arg */ - char *pt_arg; /* Arg to send to server */ - int pt_fileid; /* cookie */ -}; - -#define VFSTOPORTAL(mp) ((struct portalmount *)((mp)->mnt_data)) -#define VTOPORTAL(vp) ((struct portalnode *)(vp)->v_data) - -#define PORTAL_ROOTFILEID 2 - -extern vop_t **portal_vnodeop_p; -#endif /* _KERNEL */ diff --git a/sys/miscfs/portal/portal_vfsops.c b/sys/miscfs/portal/portal_vfsops.c deleted file mode 100644 index 423cd38..0000000 --- a/sys/miscfs/portal/portal_vfsops.c +++ /dev/null @@ -1,257 +0,0 @@ -/* - * 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 - * - * $FreeBSD$ - */ - -/* - * Portal Filesystem - */ - -#include <sys/param.h> -#include <sys/systm.h> -#include <sys/domain.h> -#include <sys/filedesc.h> -#include <sys/kernel.h> -#include <sys/lock.h> -#include <sys/malloc.h> -#include <sys/file.h> /* Must come after sys/malloc.h */ -#include <sys/mount.h> -#include <sys/proc.h> -#include <sys/protosw.h> -#include <sys/socket.h> -#include <sys/socketvar.h> -#include <sys/vnode.h> - -#include <miscfs/portal/portal.h> - -static MALLOC_DEFINE(M_PORTALFSMNT, "PORTAL mount", "PORTAL mount structure"); - -static int portal_mount __P((struct mount *mp, char *path, caddr_t data, - struct nameidata *ndp, struct proc *p)); -static int portal_unmount __P((struct mount *mp, int mntflags, - struct proc *p)); -static int portal_root __P((struct mount *mp, struct vnode **vpp)); -static int portal_statfs __P((struct mount *mp, struct statfs *sbp, - struct proc *p)); - -/* - * Mount the per-process file descriptors (/dev/fd) - */ -static 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; - struct portalnode *pn; - u_int size; - int error; - - /* - * Update is a no-op - */ - if (mp->mnt_flag & MNT_UPDATE) - return (EOPNOTSUPP); - - error = copyin(data, (caddr_t) &args, sizeof(struct portal_args)); - if (error) - return (error); - - error = holdsock(p->p_fd, args.pa_socket, &fp); - if (error) - return (error); - so = (struct socket *) fp->f_data; - if (so->so_proto->pr_domain->dom_family != AF_UNIX) { - fdrop(fp, p); - return (ESOCKTNOSUPPORT); - } - - MALLOC(pn, struct portalnode *, sizeof(struct portalnode), - M_TEMP, M_WAITOK); - - MALLOC(fmp, struct portalmount *, sizeof(struct portalmount), - M_PORTALFSMNT, M_WAITOK); /* XXX */ - - error = getnewvnode(VT_PORTAL, mp, portal_vnodeop_p, &rvp); /* XXX */ - if (error) { - FREE(fmp, M_PORTALFSMNT); - FREE(pn, M_TEMP); - fdrop(fp, p); - return (error); - } - - rvp->v_data = pn; - 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; fp->f_count++; - - mp->mnt_flag |= MNT_LOCAL; - mp->mnt_data = (qaddr_t) fmp; - vfs_getnewfsid(mp); - - (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 - - (void)portal_statfs(mp, &mp->mnt_stat, p); - fdrop(fp, p); - return (0); -} - -static int -portal_unmount(mp, mntflags, p) - struct mount *mp; - int mntflags; - struct proc *p; -{ - 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 - /* There is 1 extra root vnode reference (pm_root). */ - error = vflush(mp, 1, flags); - if (error) - return (error); - - /* - * 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. - */ - soshutdown((struct socket *) VFSTOPORTAL(mp)->pm_server->f_data, 2); - /* - * 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_PORTALFSMNT); /* XXX */ - mp->mnt_data = 0; - return (0); -} - -static int -portal_root(mp, vpp) - struct mount *mp; - struct vnode **vpp; -{ - struct proc *p = curproc; /* 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); -} - -static 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); -} - -static struct vfsops portal_vfsops = { - portal_mount, - vfs_stdstart, - portal_unmount, - portal_root, - vfs_stdquotactl, - portal_statfs, - vfs_stdsync, - vfs_stdvget, - vfs_stdfhtovp, - vfs_stdcheckexp, - vfs_stdvptofh, - vfs_stdinit, - vfs_stduninit, - vfs_stdextattrctl, -}; - -VFS_SET(portal_vfsops, portal, VFCF_SYNTHETIC); diff --git a/sys/miscfs/portal/portal_vnops.c b/sys/miscfs/portal/portal_vnops.c deleted file mode 100644 index b53c4ca..0000000 --- a/sys/miscfs/portal/portal_vnops.c +++ /dev/null @@ -1,591 +0,0 @@ -/* - * Copyright (c) 1992, 1993 - * 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_vnops.c 8.14 (Berkeley) 5/21/95 - * - * $FreeBSD$ - */ - -/* - * Portal Filesystem - */ - -#include <sys/param.h> -#include <sys/systm.h> -#include <sys/sysproto.h> -#include <sys/kernel.h> -#include <sys/time.h> -#include <sys/proc.h> -#include <sys/filedesc.h> -#include <sys/vnode.h> -#include <sys/fcntl.h> -#include <sys/file.h> -#include <sys/stat.h> -#include <sys/mount.h> -#include <sys/malloc.h> -#include <sys/namei.h> -#include <sys/mbuf.h> -#include <sys/socket.h> -#include <sys/socketvar.h> -#include <sys/un.h> -#include <sys/unpcb.h> -#include <miscfs/portal/portal.h> - -static int portal_fileid = PORTAL_ROOTFILEID+1; - -static int portal_badop __P((void)); -static void portal_closefd __P((struct proc *p, int fd)); -static int portal_connect __P((struct socket *so, struct socket *so2)); -static int portal_getattr __P((struct vop_getattr_args *ap)); -static int portal_lookup __P((struct vop_lookup_args *ap)); -static int portal_open __P((struct vop_open_args *ap)); -static int portal_print __P((struct vop_print_args *ap)); -static int portal_readdir __P((struct vop_readdir_args *ap)); -static int portal_reclaim __P((struct vop_reclaim_args *ap)); -static int portal_setattr __P((struct vop_setattr_args *ap)); - -static void -portal_closefd(p, fd) - struct proc *p; - int fd; -{ - int error; - struct close_args ua; - - ua.fd = fd; - error = close(p, &ua); - /* - * We should never get an error, and there isn't anything - * we could do if we got one, so just print a message. - */ - if (error) - printf("portal_closefd: error = %d\n", error); -} - -/* - * vp is the current namei directory - * cnp is the name to locate in that directory... - */ -static int -portal_lookup(ap) - struct vop_lookup_args /* { - struct vnode * a_dvp; - struct vnode ** a_vpp; - struct componentname * a_cnp; - } */ *ap; -{ - struct componentname *cnp = ap->a_cnp; - struct vnode **vpp = ap->a_vpp; - struct vnode *dvp = ap->a_dvp; - char *pname = cnp->cn_nameptr; - struct portalnode *pt; - int error; - struct vnode *fvp = 0; - char *path; - int size; - - *vpp = NULLVP; - - if (cnp->cn_nameiop == DELETE || cnp->cn_nameiop == RENAME) - return (EROFS); - - if (cnp->cn_namelen == 1 && *pname == '.') { - *vpp = dvp; - VREF(dvp); - /*VOP_LOCK(dvp);*/ - return (0); - } - - /* - * Do the MALLOC before the getnewvnode since doing so afterward - * might cause a bogus v_data pointer to get dereferenced - * elsewhere if MALLOC should block. - */ - MALLOC(pt, struct portalnode *, sizeof(struct portalnode), - M_TEMP, M_WAITOK); - - error = getnewvnode(VT_PORTAL, dvp->v_mount, portal_vnodeop_p, &fvp); - if (error) { - FREE(pt, M_TEMP); - goto bad; - } - fvp->v_type = VREG; - fvp->v_data = pt; - /* - * Save all of the remaining pathname and - * advance the namei next pointer to the end - * of the string. - */ - for (size = 0, path = pname; *path; path++) - size++; - cnp->cn_consume = size - cnp->cn_namelen; - - pt->pt_arg = malloc(size+1, M_TEMP, M_WAITOK); - pt->pt_size = size+1; - bcopy(pname, pt->pt_arg, pt->pt_size); - pt->pt_fileid = portal_fileid++; - - *vpp = fvp; - /*VOP_LOCK(fvp);*/ - return (0); - -bad:; - if (fvp) - vrele(fvp); - return (error); -} - -static int -portal_connect(so, so2) - struct socket *so; - struct socket *so2; -{ - /* from unp_connect, bypassing the namei stuff... */ - struct socket *so3; - struct unpcb *unp2; - struct unpcb *unp3; - - if (so2 == 0) - return (ECONNREFUSED); - - if (so->so_type != so2->so_type) - return (EPROTOTYPE); - - if ((so2->so_options & SO_ACCEPTCONN) == 0) - return (ECONNREFUSED); - - if ((so3 = sonewconn(so2, 0)) == 0) - return (ECONNREFUSED); - - unp2 = sotounpcb(so2); - unp3 = sotounpcb(so3); - if (unp2->unp_addr) - unp3->unp_addr = (struct sockaddr_un *) - dup_sockaddr((struct sockaddr *)unp2->unp_addr, 0); - so2 = so3; - - return (unp_connect2(so, so2)); -} - -static int -portal_open(ap) - struct vop_open_args /* { - struct vnode *a_vp; - int a_mode; - struct ucred *a_cred; - struct proc *a_p; - } */ *ap; -{ - struct socket *so = 0; - struct portalnode *pt; - struct proc *p = ap->a_p; - struct vnode *vp = ap->a_vp; - int s; - struct uio auio; - struct iovec aiov[2]; - int res; - struct mbuf *cm = 0; - struct cmsghdr *cmsg; - int newfds; - int *ip; - int fd; - int error; - int len; - struct portalmount *fmp; - struct file *fp; - struct portal_cred pcred; - - /* - * Nothing to do when opening the root node. - */ - if (vp->v_flag & VROOT) - return (0); - - /* - * Can't be opened unless the caller is set up - * to deal with the side effects. Check for this - * by testing whether the p_dupfd has been set. - */ - if (p->p_dupfd >= 0) - return (ENODEV); - - pt = VTOPORTAL(vp); - fmp = VFSTOPORTAL(vp->v_mount); - - /* - * Create a new socket. - */ - error = socreate(AF_UNIX, &so, SOCK_STREAM, 0, ap->a_p); - if (error) - goto bad; - - /* - * Reserve some buffer space - */ - res = pt->pt_size + sizeof(pcred) + 512; /* XXX */ - error = soreserve(so, res, res); - if (error) - goto bad; - - /* - * Kick off connection - */ - error = portal_connect(so, (struct socket *)fmp->pm_server->f_data); - if (error) - goto bad; - - /* - * Wait for connection to complete - */ - /* - * XXX: Since the mount point is holding a reference on the - * underlying server socket, it is not easy to find out whether - * the server process is still running. To handle this problem - * we loop waiting for the new socket to be connected (something - * which will only happen if the server is still running) or for - * the reference count on the server socket to drop to 1, which - * will happen if the server dies. Sleep for 5 second intervals - * and keep polling the reference count. XXX. - */ - s = splnet(); - while ((so->so_state & SS_ISCONNECTING) && so->so_error == 0) { - if (fmp->pm_server->f_count == 1) { - error = ECONNREFUSED; - splx(s); - goto bad; - } - (void) tsleep((caddr_t) &so->so_timeo, PSOCK, "portalcon", 5 * hz); - } - splx(s); - - if (so->so_error) { - error = so->so_error; - goto bad; - } - - /* - * Set miscellaneous flags - */ - so->so_rcv.sb_timeo = 0; - so->so_snd.sb_timeo = 0; - so->so_rcv.sb_flags |= SB_NOINTR; - so->so_snd.sb_flags |= SB_NOINTR; - - - pcred.pcr_flag = ap->a_mode; - pcred.pcr_uid = ap->a_cred->cr_uid; - pcred.pcr_ngroups = ap->a_cred->cr_ngroups; - bcopy(ap->a_cred->cr_groups, pcred.pcr_groups, NGROUPS * sizeof(gid_t)); - aiov[0].iov_base = (caddr_t) &pcred; - aiov[0].iov_len = sizeof(pcred); - aiov[1].iov_base = pt->pt_arg; - aiov[1].iov_len = pt->pt_size; - auio.uio_iov = aiov; - auio.uio_iovcnt = 2; - auio.uio_rw = UIO_WRITE; - auio.uio_segflg = UIO_SYSSPACE; - auio.uio_procp = p; - auio.uio_offset = 0; - auio.uio_resid = aiov[0].iov_len + aiov[1].iov_len; - - error = sosend(so, (struct sockaddr *) 0, &auio, - (struct mbuf *) 0, (struct mbuf *) 0, 0, p); - if (error) - goto bad; - - len = auio.uio_resid = sizeof(int); - do { - struct mbuf *m = 0; - int flags = MSG_WAITALL; - error = soreceive(so, (struct sockaddr **) 0, &auio, - &m, &cm, &flags); - if (error) - goto bad; - - /* - * Grab an error code from the mbuf. - */ - if (m) { - m = m_pullup(m, sizeof(int)); /* Needed? */ - if (m) { - error = *(mtod(m, int *)); - m_freem(m); - } else { - error = EINVAL; - } - } else { - if (cm == 0) { - error = ECONNRESET; /* XXX */ -#ifdef notdef - break; -#endif - } - } - } while (cm == 0 && auio.uio_resid == len && !error); - - if (cm == 0) - goto bad; - - if (auio.uio_resid) { - error = 0; -#ifdef notdef - error = EMSGSIZE; - goto bad; -#endif - } - - /* - * XXX: Break apart the control message, and retrieve the - * received file descriptor. Note that more than one descriptor - * may have been received, or that the rights chain may have more - * than a single mbuf in it. What to do? - */ - cmsg = mtod(cm, struct cmsghdr *); - newfds = (cmsg->cmsg_len - sizeof(*cmsg)) / sizeof (int); - if (newfds == 0) { - error = ECONNREFUSED; - goto bad; - } - /* - * At this point the rights message consists of a control message - * header, followed by a data region containing a vector of - * integer file descriptors. The fds were allocated by the action - * of receiving the control message. - */ - ip = (int *) (cmsg + 1); - fd = *ip++; - if (newfds > 1) { - /* - * Close extra fds. - */ - int i; - printf("portal_open: %d extra fds\n", newfds - 1); - for (i = 1; i < newfds; i++) { - portal_closefd(p, *ip); - ip++; - } - } - - /* - * Check that the mode the file is being opened for is a subset - * of the mode of the existing descriptor. - */ - fp = p->p_fd->fd_ofiles[fd]; - if (((ap->a_mode & (FREAD|FWRITE)) | fp->f_flag) != fp->f_flag) { - portal_closefd(p, fd); - error = EACCES; - goto bad; - } - - /* - * Save the dup fd in the proc structure then return the - * special error code (ENXIO) which causes magic things to - * happen in vn_open. The whole concept is, well, hmmm. - */ - p->p_dupfd = fd; - error = ENXIO; - -bad:; - /* - * And discard the control message. - */ - if (cm) { - m_freem(cm); - } - - if (so) { - soshutdown(so, 2); - soclose(so); - } - return (error); -} - -static int -portal_getattr(ap) - struct vop_getattr_args /* { - struct vnode *a_vp; - struct vattr *a_vap; - struct ucred *a_cred; - struct proc *a_p; - } */ *ap; -{ - struct vnode *vp = ap->a_vp; - struct vattr *vap = ap->a_vap; - - bzero(vap, sizeof(*vap)); - vattr_null(vap); - vap->va_uid = 0; - vap->va_gid = 0; - vap->va_size = DEV_BSIZE; - vap->va_blocksize = DEV_BSIZE; - nanotime(&vap->va_atime); - vap->va_mtime = vap->va_atime; - vap->va_ctime = vap->va_mtime; - vap->va_gen = 0; - vap->va_flags = 0; - vap->va_rdev = 0; - /* vap->va_qbytes = 0; */ - vap->va_bytes = 0; - /* vap->va_qsize = 0; */ - if (vp->v_flag & VROOT) { - vap->va_type = VDIR; - vap->va_mode = S_IRUSR|S_IWUSR|S_IXUSR| - S_IRGRP|S_IWGRP|S_IXGRP| - S_IROTH|S_IWOTH|S_IXOTH; - vap->va_nlink = 2; - vap->va_fileid = 2; - } else { - vap->va_type = VREG; - vap->va_mode = S_IRUSR|S_IWUSR| - S_IRGRP|S_IWGRP| - S_IROTH|S_IWOTH; - vap->va_nlink = 1; - vap->va_fileid = VTOPORTAL(vp)->pt_fileid; - } - return (0); -} - -static int -portal_setattr(ap) - struct vop_setattr_args /* { - struct vnode *a_vp; - struct vattr *a_vap; - struct ucred *a_cred; - struct proc *a_p; - } */ *ap; -{ - - /* - * Can't mess with the root vnode - */ - if (ap->a_vp->v_flag & VROOT) - return (EACCES); - - if (ap->a_vap->va_flags != VNOVAL) - return (EOPNOTSUPP); - - return (0); -} - -/* - * Fake readdir, just return empty directory. - * It is hard to deal with '.' and '..' so don't bother. - */ -static int -portal_readdir(ap) - struct vop_readdir_args /* { - struct vnode *a_vp; - struct uio *a_uio; - struct ucred *a_cred; - int *a_eofflag; - u_long *a_cookies; - int a_ncookies; - } */ *ap; -{ - - /* - * We don't allow exporting portal mounts, and currently local - * requests do not need cookies. - */ - if (ap->a_ncookies) - panic("portal_readdir: not hungry"); - - return (0); -} - -static int -portal_reclaim(ap) - struct vop_reclaim_args /* { - struct vnode *a_vp; - } */ *ap; -{ - struct portalnode *pt = VTOPORTAL(ap->a_vp); - - if (pt->pt_arg) { - free((caddr_t) pt->pt_arg, M_TEMP); - pt->pt_arg = 0; - } - FREE(ap->a_vp->v_data, M_TEMP); - ap->a_vp->v_data = 0; - - return (0); -} - - -/* - * Print out the contents of a Portal vnode. - */ -/* ARGSUSED */ -static int -portal_print(ap) - struct vop_print_args /* { - struct vnode *a_vp; - } */ *ap; -{ - - printf("tag VT_PORTAL, portal vnode\n"); - return (0); -} - - -/* - * Portal "should never get here" operation - */ -static int -portal_badop() -{ - - panic("portal: bad op"); - /* NOTREACHED */ -} - -vop_t **portal_vnodeop_p; -static struct vnodeopv_entry_desc portal_vnodeop_entries[] = { - { &vop_default_desc, (vop_t *) vop_defaultop }, - { &vop_access_desc, (vop_t *) vop_null }, - { &vop_getattr_desc, (vop_t *) portal_getattr }, - { &vop_lookup_desc, (vop_t *) portal_lookup }, - { &vop_open_desc, (vop_t *) portal_open }, - { &vop_pathconf_desc, (vop_t *) vop_stdpathconf }, - { &vop_print_desc, (vop_t *) portal_print }, - { &vop_readdir_desc, (vop_t *) portal_readdir }, - { &vop_reclaim_desc, (vop_t *) portal_reclaim }, - { &vop_setattr_desc, (vop_t *) portal_setattr }, - { NULL, NULL } -}; -static struct vnodeopv_desc portal_vnodeop_opv_desc = - { &portal_vnodeop_p, portal_vnodeop_entries }; - -VNODEOP_SET(portal_vnodeop_opv_desc); |
