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1.1 root 1: /*
2: * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
3: *
4: * @APPLE_LICENSE_HEADER_START@
5: *
6: * Portions Copyright (c) 1999 Apple Computer, Inc. All Rights
7: * Reserved. This file contains Original Code and/or Modifications of
8: * Original Code as defined in and that are subject to the Apple Public
9: * Source License Version 1.1 (the "License"). You may not use this file
10: * except in compliance with the License. Please obtain a copy of the
11: * License at http://www.apple.com/publicsource and read it before using
12: * this file.
13: *
14: * The Original Code and all software distributed under the License are
15: * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
16: * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
17: * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
18: * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the
19: * License for the specific language governing rights and limitations
20: * under the License.
21: *
22: * @APPLE_LICENSE_HEADER_END@
23: */
24:
25: /* Copyright (c) 1995 NeXT Computer, Inc. All Rights Reserved */
26: /*
27: * Copyright (c) 1992, 1993, 1995
28: * The Regents of the University of California. All rights reserved.
29: *
30: * This code is derived from software donated to Berkeley by
31: * Jan-Simon Pendry.
32: *
33: * Redistribution and use in source and binary forms, with or without
34: * modification, are permitted provided that the following conditions
35: * are met:
36: * 1. Redistributions of source code must retain the above copyright
37: * notice, this list of conditions and the following disclaimer.
38: * 2. Redistributions in binary form must reproduce the above copyright
39: * notice, this list of conditions and the following disclaimer in the
40: * documentation and/or other materials provided with the distribution.
41: * 3. All advertising materials mentioning features or use of this software
42: * must display the following acknowledgement:
43: * This product includes software developed by the University of
44: * California, Berkeley and its contributors.
45: * 4. Neither the name of the University nor the names of its contributors
46: * may be used to endorse or promote products derived from this software
47: * without specific prior written permission.
48: *
49: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
50: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
51: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
52: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
53: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
54: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
55: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
56: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
57: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
58: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
59: * SUCH DAMAGE.
60: *
61: * @(#)portal_vfsops.c 8.11 (Berkeley) 5/14/95
62: *
63: * @(#)portal_vfsops.c 8.6 (Berkeley) 1/21/94
64: */
65:
66: /*
67: * Portal Filesystem
68: */
69:
70: #include <sys/param.h>
71: #include <sys/systm.h>
72: #include <sys/time.h>
73: #include <sys/types.h>
74: #include <sys/proc.h>
75: #include <sys/filedesc.h>
76: #include <sys/file.h>
77: #include <sys/vnode.h>
78: #include <sys/mount.h>
79: #include <sys/namei.h>
80: #include <sys/malloc.h>
81: #include <sys/mbuf.h>
82: #include <sys/socket.h>
83: #include <sys/socketvar.h>
84: #include <sys/protosw.h>
85: #include <sys/domain.h>
86: #include <sys/un.h>
87: #include <miscfs/portal/portal.h>
88:
89: int
90: portal_init(vfsp)
91: struct vfsconf *vfsp;
92: {
93:
94: return (0);
95: }
96:
97: /*
98: * Mount the per-process file descriptors (/dev/fd)
99: */
100: int
101: portal_mount(mp, path, data, ndp, p)
102: struct mount *mp;
103: char *path;
104: caddr_t data;
105: struct nameidata *ndp;
106: struct proc *p;
107: {
108: struct file *fp;
109: struct portal_args args;
110: struct portalmount *fmp;
111: struct socket *so;
112: struct vnode *rvp;
113: u_int size;
114: int error;
115:
116: /*
117: * Update is a no-op
118: */
119: if (mp->mnt_flag & MNT_UPDATE)
120: return (EOPNOTSUPP);
121:
122: if (error = copyin(data, (caddr_t) &args, sizeof(struct portal_args)))
123: return (error);
124:
125: if (error = getsock(p, args.pa_socket, &fp))
126: return (error);
127: so = (struct socket *) fp->f_data;
128: if (so->so_proto->pr_domain->dom_family != AF_UNIX)
129: return (ESOCKTNOSUPPORT);
130:
131: error = getnewvnode(VT_PORTAL, mp, portal_vnodeop_p, &rvp); /* XXX */
132: if (error)
133: return (error);
134: MALLOC(rvp->v_data, void *, sizeof(struct portalnode),
135: M_TEMP, M_WAITOK);
136:
137: fmp = (struct portalmount *) _MALLOC(sizeof(struct portalmount),
138: M_UFSMNT, M_WAITOK); /* XXX */
139: rvp->v_type = VDIR;
140: rvp->v_flag |= VROOT;
141: VTOPORTAL(rvp)->pt_arg = 0;
142: VTOPORTAL(rvp)->pt_size = 0;
143: VTOPORTAL(rvp)->pt_fileid = PORTAL_ROOTFILEID;
144: fmp->pm_root = rvp;
145: fmp->pm_server = fp; fp->f_count++;
146:
147: mp->mnt_flag |= MNT_LOCAL;
148: mp->mnt_data = (qaddr_t) fmp;
149: vfs_getnewfsid(mp);
150:
151: (void)copyinstr(path, mp->mnt_stat.f_mntonname, MNAMELEN - 1, &size);
152: bzero(mp->mnt_stat.f_mntonname + size, MNAMELEN - size);
153: (void)copyinstr(args.pa_config,
154: mp->mnt_stat.f_mntfromname, MNAMELEN - 1, &size);
155: bzero(mp->mnt_stat.f_mntfromname + size, MNAMELEN - size);
156:
157: #ifdef notdef
158: bzero(mp->mnt_stat.f_mntfromname, MNAMELEN);
159: bcopy("portal", mp->mnt_stat.f_mntfromname, sizeof("portal"));
160: #endif
161:
162: return (0);
163: }
164:
165: int
166: portal_start(mp, flags, p)
167: struct mount *mp;
168: int flags;
169: struct proc *p;
170: {
171:
172: return (0);
173: }
174:
175: int
176: portal_unmount(mp, mntflags, p)
177: struct mount *mp;
178: int mntflags;
179: struct proc *p;
180: {
181: struct vnode *rootvp = VFSTOPORTAL(mp)->pm_root;
182: int error, flags = 0;
183:
184:
185: if (mntflags & MNT_FORCE)
186: flags |= FORCECLOSE;
187:
188: /*
189: * Clear out buffer cache. I don't think we
190: * ever get anything cached at this level at the
191: * moment, but who knows...
192: */
193: #ifdef notyet
194: mntflushbuf(mp, 0);
195: if (mntinvalbuf(mp, 1))
196: return (EBUSY);
197: #endif
198: if (rootvp->v_usecount > 1)
199: return (EBUSY);
200: if (error = vflush(mp, rootvp, flags))
201: return (error);
202:
203: /*
204: * Release reference on underlying root vnode
205: */
206: vrele(rootvp);
207: /*
208: * And blow it away for future re-use
209: */
210: vgone(rootvp);
211: /*
212: * Shutdown the socket. This will cause the select in the
213: * daemon to wake up, and then the accept will get ECONNABORTED
214: * which it interprets as a request to go and bury itself.
215: */
216: soshutdown((struct socket *) VFSTOPORTAL(mp)->pm_server->f_data, 2);
217: /*
218: * Discard reference to underlying file. Must call closef because
219: * this may be the last reference.
220: */
221: closef(VFSTOPORTAL(mp)->pm_server, (struct proc *) 0);
222: /*
223: * Finally, throw away the portalmount structure
224: */
225: _FREE(mp->mnt_data, M_UFSMNT); /* XXX */
226: mp->mnt_data = 0;
227: return (0);
228: }
229:
230: int
231: portal_root(mp, vpp)
232: struct mount *mp;
233: struct vnode **vpp;
234: {
235: struct proc *p = current_proc(); /* XXX */
236: struct vnode *vp;
237:
238: /*
239: * Return locked reference to root.
240: */
241: vp = VFSTOPORTAL(mp)->pm_root;
242: VREF(vp);
243: vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, p);
244: *vpp = vp;
245: return (0);
246: }
247:
248: int
249: portal_statfs(mp, sbp, p)
250: struct mount *mp;
251: struct statfs *sbp;
252: struct proc *p;
253: {
254:
255: sbp->f_flags = 0;
256: sbp->f_bsize = DEV_BSIZE;
257: sbp->f_iosize = DEV_BSIZE;
258: sbp->f_blocks = 2; /* 1K to keep df happy */
259: sbp->f_bfree = 0;
260: sbp->f_bavail = 0;
261: sbp->f_files = 1; /* Allow for "." */
262: sbp->f_ffree = 0; /* See comments above */
263: if (sbp != &mp->mnt_stat) {
264: sbp->f_type = mp->mnt_vfc->vfc_typenum;
265: bcopy(&mp->mnt_stat.f_fsid, &sbp->f_fsid, sizeof(sbp->f_fsid));
266: bcopy(mp->mnt_stat.f_mntonname, sbp->f_mntonname, MNAMELEN);
267: bcopy(mp->mnt_stat.f_mntfromname, sbp->f_mntfromname, MNAMELEN);
268: }
269: return (0);
270: }
271:
272: #define portal_fhtovp ((int (*) __P((struct mount *, struct fid *, \
273: struct mbuf *, struct vnode **, int *, struct ucred **)))eopnotsupp)
274: #define portal_quotactl ((int (*) __P((struct mount *, int, uid_t, caddr_t, \
275: struct proc *)))eopnotsupp)
276: #define portal_sync ((int (*) __P((struct mount *, int, struct ucred *, \
277: struct proc *)))nullop)
278: #define portal_sysctl ((int (*) __P((int *, u_int, void *, size_t *, void *, \
279: size_t, struct proc *)))eopnotsupp)
280: #define portal_vget ((int (*) __P((struct mount *, ino_t, struct vnode **))) \
281: eopnotsupp)
282: #define portal_vptofh ((int (*) __P((struct vnode *, struct fid *)))eopnotsupp)
283:
284: struct vfsops portal_vfsops = {
285: portal_mount,
286: portal_start,
287: portal_unmount,
288: portal_root,
289: portal_quotactl,
290: portal_statfs,
291: portal_sync,
292: portal_vget,
293: portal_fhtovp,
294: portal_vptofh,
295: portal_init,
296: portal_sysctl,
297: };
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