diff options
Diffstat (limited to 'sys/fs/portalfs/portal_vfsops.c')
-rw-r--r-- | sys/fs/portalfs/portal_vfsops.c | 263 |
1 files changed, 0 insertions, 263 deletions
diff --git a/sys/fs/portalfs/portal_vfsops.c b/sys/fs/portalfs/portal_vfsops.c deleted file mode 100644 index 62131dc..0000000 --- a/sys/fs/portalfs/portal_vfsops.c +++ /dev/null @@ -1,263 +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. - * 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/capability.h> -#include <sys/domain.h> -#include <sys/filedesc.h> -#include <sys/kernel.h> -#include <sys/lock.h> -#include <sys/mutex.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 <fs/portalfs/portal.h> - -static MALLOC_DEFINE(M_PORTALFSMNT, "portal_mount", "PORTAL mount structure"); - -static vfs_unmount_t portal_unmount; -static vfs_root_t portal_root; -static vfs_statfs_t portal_statfs; - -static const char *portal_opts[] = { - "socket", "config", - NULL -}; - -static int -portal_cmount(struct mntarg *ma, void *data, uint64_t flags) -{ - struct portal_args args; - int error; - - if (data == NULL) - return (EINVAL); - error = copyin(data, &args, sizeof args); - if (error) - return (error); - - ma = mount_argf(ma, "socket", "%d", args.pa_socket); - ma = mount_argsu(ma, "config", args.pa_config, MAXPATHLEN); - error = kernel_mount(ma, flags); - - return (error); -} - -/* - * Mount the per-process file descriptors (/dev/fd) - */ -static int -portal_mount(struct mount *mp) -{ - struct file *fp; - struct portalmount *fmp; - struct socket *so; - struct vnode *rvp; - struct thread *td; - struct portalnode *pn; - int error, v; - char *p; - - td = curthread; - if (vfs_filteropt(mp->mnt_optnew, portal_opts)) - return (EINVAL); - - error = vfs_scanopt(mp->mnt_optnew, "socket", "%d", &v); - if (error != 1) - return (EINVAL); - error = vfs_getopt(mp->mnt_optnew, "config", (void **)&p, NULL); - if (error) - return (error); - - /* - * Capsicum is not incompatible with portalfs, but we don't really - * know what rights are required. In the spirit of "better safe than - * sorry", pretend that all rights are required for now. - */ - if ((error = fget(td, v, CAP_MASK_VALID, &fp)) != 0) - return (error); - if (fp->f_type != DTYPE_SOCKET) { - fdrop(fp, td); - return(ENOTSOCK); - } - so = fp->f_data; /* XXX race against userland */ - if (so->so_proto->pr_domain->dom_family != AF_UNIX) { - fdrop(fp, td); - return (ESOCKTNOSUPPORT); - } - - pn = malloc(sizeof(struct portalnode), - M_TEMP, M_WAITOK); - - fmp = malloc(sizeof(struct portalmount), - M_PORTALFSMNT, M_WAITOK); /* XXX */ - - error = getnewvnode("portal", mp, &portal_vnodeops, &rvp); /* XXX */ - if (error) { - free(fmp, M_PORTALFSMNT); - free(pn, M_TEMP); - fdrop(fp, td); - return (error); - } - - error = insmntque(rvp, mp); /* XXX: Too early for mpsafe fs */ - if (error != 0) { - free(fmp, M_PORTALFSMNT); - free(pn, M_TEMP); - fdrop(fp, td); - return (error); - } - rvp->v_data = pn; - rvp->v_type = VDIR; - rvp->v_vflag |= VV_ROOT; - VTOPORTAL(rvp)->pt_arg = 0; - VTOPORTAL(rvp)->pt_size = 0; - VTOPORTAL(rvp)->pt_fileid = PORTAL_ROOTFILEID; - fmp->pm_root = rvp; - fhold(fp); - fmp->pm_server = fp; - - MNT_ILOCK(mp); - mp->mnt_flag |= MNT_LOCAL; - MNT_IUNLOCK(mp); - mp->mnt_data = fmp; - vfs_getnewfsid(mp); - - vfs_mountedfrom(mp, p); - fdrop(fp, td); - return (0); -} - -static int -portal_unmount(mp, mntflags) - struct mount *mp; - int mntflags; -{ - 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, curthread); - 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(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 thread *) 0); - /* - * Finally, throw away the portalmount structure - */ - free(mp->mnt_data, M_PORTALFSMNT); /* XXX */ - mp->mnt_data = NULL; - return (0); -} - -static int -portal_root(mp, flags, vpp) - struct mount *mp; - int flags; - struct vnode **vpp; -{ - struct vnode *vp; - - /* - * Return locked reference to root. - */ - vp = VFSTOPORTAL(mp)->pm_root; - VREF(vp); - vn_lock(vp, LK_EXCLUSIVE | LK_RETRY); - *vpp = vp; - return (0); -} - -static int -portal_statfs(mp, sbp) - struct mount *mp; - struct statfs *sbp; -{ - - 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 */ - return (0); -} - -static struct vfsops portal_vfsops = { - .vfs_cmount = portal_cmount, - .vfs_mount = portal_mount, - .vfs_root = portal_root, - .vfs_statfs = portal_statfs, - .vfs_unmount = portal_unmount, -}; - -VFS_SET(portal_vfsops, portalfs, VFCF_SYNTHETIC); |