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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;
1.1.1.2 ! root 145: fmp->pm_server = fp;
! 146: if (++fp->f_count <= 0)
! 147: panic("portal_mount f_count");
1.1 root 148:
149: mp->mnt_flag |= MNT_LOCAL;
150: mp->mnt_data = (qaddr_t) fmp;
151: vfs_getnewfsid(mp);
152:
153: (void)copyinstr(path, mp->mnt_stat.f_mntonname, MNAMELEN - 1, &size);
154: bzero(mp->mnt_stat.f_mntonname + size, MNAMELEN - size);
155: (void)copyinstr(args.pa_config,
156: mp->mnt_stat.f_mntfromname, MNAMELEN - 1, &size);
157: bzero(mp->mnt_stat.f_mntfromname + size, MNAMELEN - size);
158:
159: #ifdef notdef
160: bzero(mp->mnt_stat.f_mntfromname, MNAMELEN);
161: bcopy("portal", mp->mnt_stat.f_mntfromname, sizeof("portal"));
162: #endif
163:
164: return (0);
165: }
166:
167: int
168: portal_start(mp, flags, p)
169: struct mount *mp;
170: int flags;
171: struct proc *p;
172: {
173:
174: return (0);
175: }
176:
177: int
178: portal_unmount(mp, mntflags, p)
179: struct mount *mp;
180: int mntflags;
181: struct proc *p;
182: {
183: struct vnode *rootvp = VFSTOPORTAL(mp)->pm_root;
184: int error, flags = 0;
185:
186:
187: if (mntflags & MNT_FORCE)
188: flags |= FORCECLOSE;
189:
190: /*
191: * Clear out buffer cache. I don't think we
192: * ever get anything cached at this level at the
193: * moment, but who knows...
194: */
195: #ifdef notyet
196: mntflushbuf(mp, 0);
197: if (mntinvalbuf(mp, 1))
198: return (EBUSY);
199: #endif
200: if (rootvp->v_usecount > 1)
201: return (EBUSY);
202: if (error = vflush(mp, rootvp, flags))
203: return (error);
204:
205: /*
206: * Release reference on underlying root vnode
207: */
208: vrele(rootvp);
209: /*
210: * And blow it away for future re-use
211: */
212: vgone(rootvp);
213: /*
214: * Shutdown the socket. This will cause the select in the
215: * daemon to wake up, and then the accept will get ECONNABORTED
216: * which it interprets as a request to go and bury itself.
217: */
218: soshutdown((struct socket *) VFSTOPORTAL(mp)->pm_server->f_data, 2);
219: /*
220: * Discard reference to underlying file. Must call closef because
221: * this may be the last reference.
222: */
223: closef(VFSTOPORTAL(mp)->pm_server, (struct proc *) 0);
224: /*
225: * Finally, throw away the portalmount structure
226: */
227: _FREE(mp->mnt_data, M_UFSMNT); /* XXX */
228: mp->mnt_data = 0;
229: return (0);
230: }
231:
232: int
233: portal_root(mp, vpp)
234: struct mount *mp;
235: struct vnode **vpp;
236: {
237: struct proc *p = current_proc(); /* XXX */
238: struct vnode *vp;
239:
240: /*
241: * Return locked reference to root.
242: */
243: vp = VFSTOPORTAL(mp)->pm_root;
244: VREF(vp);
245: vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, p);
246: *vpp = vp;
247: return (0);
248: }
249:
250: int
251: portal_statfs(mp, sbp, p)
252: struct mount *mp;
253: struct statfs *sbp;
254: struct proc *p;
255: {
256:
257: sbp->f_flags = 0;
258: sbp->f_bsize = DEV_BSIZE;
259: sbp->f_iosize = DEV_BSIZE;
260: sbp->f_blocks = 2; /* 1K to keep df happy */
261: sbp->f_bfree = 0;
262: sbp->f_bavail = 0;
263: sbp->f_files = 1; /* Allow for "." */
264: sbp->f_ffree = 0; /* See comments above */
265: if (sbp != &mp->mnt_stat) {
266: sbp->f_type = mp->mnt_vfc->vfc_typenum;
267: bcopy(&mp->mnt_stat.f_fsid, &sbp->f_fsid, sizeof(sbp->f_fsid));
268: bcopy(mp->mnt_stat.f_mntonname, sbp->f_mntonname, MNAMELEN);
269: bcopy(mp->mnt_stat.f_mntfromname, sbp->f_mntfromname, MNAMELEN);
270: }
271: return (0);
272: }
273:
274: #define portal_fhtovp ((int (*) __P((struct mount *, struct fid *, \
275: struct mbuf *, struct vnode **, int *, struct ucred **)))eopnotsupp)
276: #define portal_quotactl ((int (*) __P((struct mount *, int, uid_t, caddr_t, \
277: struct proc *)))eopnotsupp)
278: #define portal_sync ((int (*) __P((struct mount *, int, struct ucred *, \
279: struct proc *)))nullop)
280: #define portal_sysctl ((int (*) __P((int *, u_int, void *, size_t *, void *, \
281: size_t, struct proc *)))eopnotsupp)
282: #define portal_vget ((int (*) __P((struct mount *, ino_t, struct vnode **))) \
283: eopnotsupp)
284: #define portal_vptofh ((int (*) __P((struct vnode *, struct fid *)))eopnotsupp)
285:
286: struct vfsops portal_vfsops = {
287: portal_mount,
288: portal_start,
289: portal_unmount,
290: portal_root,
291: portal_quotactl,
292: portal_statfs,
293: portal_sync,
294: portal_vget,
295: portal_fhtovp,
296: portal_vptofh,
297: portal_init,
298: portal_sysctl,
299: };
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