Annotation of src/sys/miscfs/portal/portal_vfsops.c, Revision 1.26.2.3
1.26.2.3! jdolecek 1: /* $NetBSD: portal_vfsops.c,v 1.26.2.2 2002/09/06 08:48:39 jdolecek Exp $ */
1.6 cgd 2:
1.1 cgd 3: /*
1.17 fvdl 4: * Copyright (c) 1992, 1993, 1995
1.5 mycroft 5: * The Regents of the University of California. All rights reserved.
1.1 cgd 6: *
7: * This code is derived from software donated to Berkeley by
8: * Jan-Simon Pendry.
9: *
10: * Redistribution and use in source and binary forms, with or without
11: * modification, are permitted provided that the following conditions
12: * are met:
13: * 1. Redistributions of source code must retain the above copyright
14: * notice, this list of conditions and the following disclaimer.
15: * 2. Redistributions in binary form must reproduce the above copyright
16: * notice, this list of conditions and the following disclaimer in the
17: * documentation and/or other materials provided with the distribution.
18: * 3. All advertising materials mentioning features or use of this software
19: * must display the following acknowledgement:
20: * This product includes software developed by the University of
21: * California, Berkeley and its contributors.
22: * 4. Neither the name of the University nor the names of its contributors
23: * may be used to endorse or promote products derived from this software
24: * without specific prior written permission.
25: *
26: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
27: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
28: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
29: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
30: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
31: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
32: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
33: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
34: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
35: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
36: * SUCH DAMAGE.
37: *
1.5 mycroft 38: * from: Id: portal_vfsops.c,v 1.5 1992/05/30 10:25:27 jsp Exp
1.17 fvdl 39: * @(#)portal_vfsops.c 8.11 (Berkeley) 5/14/95
1.1 cgd 40: */
41:
42: /*
43: * Portal Filesystem
44: */
1.18 jonathan 45:
1.26.2.1 thorpej 46: #include <sys/cdefs.h>
1.26.2.3! jdolecek 47: __KERNEL_RCSID(0, "$NetBSD: portal_vfsops.c,v 1.26.2.2 2002/09/06 08:48:39 jdolecek Exp $");
1.26.2.1 thorpej 48:
1.26 mrg 49: #if defined(_KERNEL_OPT)
1.18 jonathan 50: #include "opt_compat_netbsd.h"
51: #endif
1.1 cgd 52:
53: #include <sys/param.h>
54: #include <sys/systm.h>
55: #include <sys/time.h>
56: #include <sys/proc.h>
57: #include <sys/filedesc.h>
58: #include <sys/file.h>
59: #include <sys/vnode.h>
60: #include <sys/mount.h>
61: #include <sys/namei.h>
62: #include <sys/malloc.h>
63: #include <sys/mbuf.h>
64: #include <sys/socket.h>
65: #include <sys/socketvar.h>
66: #include <sys/protosw.h>
67: #include <sys/domain.h>
68: #include <sys/un.h>
69: #include <miscfs/portal/portal.h>
70:
1.14 christos 71: void portal_init __P((void));
1.23 jdolecek 72: void portal_done __P((void));
1.15 cgd 73: int portal_mount __P((struct mount *, const char *, void *,
1.14 christos 74: struct nameidata *, struct proc *));
75: int portal_start __P((struct mount *, int, struct proc *));
76: int portal_unmount __P((struct mount *, int, struct proc *));
77: int portal_root __P((struct mount *, struct vnode **));
78: int portal_quotactl __P((struct mount *, int, uid_t, caddr_t,
79: struct proc *));
80: int portal_statfs __P((struct mount *, struct statfs *, struct proc *));
81: int portal_sync __P((struct mount *, int, struct ucred *, struct proc *));
82: int portal_vget __P((struct mount *, ino_t, struct vnode **));
1.21 wrstuden 83: int portal_fhtovp __P((struct mount *, struct fid *, struct vnode **));
84: int portal_checkexp __P((struct mount *, struct mbuf *, int *,
85: struct ucred **));
1.14 christos 86: int portal_vptofh __P((struct vnode *, struct fid *));
1.17 fvdl 87: int portal_sysctl __P((int *, u_int, void *, size_t *, void *, size_t,
88: struct proc *));
1.14 christos 89:
90: void
1.5 mycroft 91: portal_init()
92: {
1.1 cgd 93: }
94:
1.23 jdolecek 95: void
96: portal_done()
97: {
98: }
99:
1.1 cgd 100: /*
101: * Mount the per-process file descriptors (/dev/fd)
102: */
1.5 mycroft 103: int
1.1 cgd 104: portal_mount(mp, path, data, ndp, p)
105: struct mount *mp;
1.15 cgd 106: const char *path;
107: void *data;
1.1 cgd 108: struct nameidata *ndp;
109: struct proc *p;
110: {
1.5 mycroft 111: struct file *fp;
1.1 cgd 112: struct portal_args args;
113: struct portalmount *fmp;
1.5 mycroft 114: struct socket *so;
1.1 cgd 115: struct vnode *rvp;
1.12 mycroft 116: size_t size;
1.5 mycroft 117: int error;
1.1 cgd 118:
1.26.2.3! jdolecek 119: if (mp->mnt_flag & MNT_GETARGS) {
! 120: fmp = VFSTOPORTAL(mp);
! 121: if (fmp == NULL)
! 122: return EIO;
! 123: args.pa_config = NULL;
! 124: args.pa_socket = 0; /* XXX */
! 125: return copyout(&args, data, sizeof(args));
! 126: }
1.1 cgd 127: /*
128: * Update is a no-op
129: */
130: if (mp->mnt_flag & MNT_UPDATE)
131: return (EOPNOTSUPP);
132:
1.14 christos 133: error = copyin(data, (caddr_t) &args, sizeof(struct portal_args));
134: if (error)
1.1 cgd 135: return (error);
136:
1.22 thorpej 137: /* getsock() will use the descriptor for us */
1.14 christos 138: if ((error = getsock(p->p_fd, args.pa_socket, &fp)) != 0)
1.1 cgd 139: return (error);
140: so = (struct socket *) fp->f_data;
1.22 thorpej 141: FILE_UNUSE(fp, NULL);
1.19 lukem 142: if (so->so_proto->pr_domain->dom_family != AF_LOCAL)
1.1 cgd 143: return (ESOCKTNOSUPPORT);
144:
1.5 mycroft 145: error = getnewvnode(VT_PORTAL, mp, portal_vnodeop_p, &rvp); /* XXX */
1.1 cgd 146: if (error)
147: return (error);
1.5 mycroft 148: MALLOC(rvp->v_data, void *, sizeof(struct portalnode),
149: M_TEMP, M_WAITOK);
1.1 cgd 150:
151: fmp = (struct portalmount *) malloc(sizeof(struct portalmount),
152: M_UFSMNT, M_WAITOK); /* XXX */
153: rvp->v_type = VDIR;
154: rvp->v_flag |= VROOT;
155: VTOPORTAL(rvp)->pt_arg = 0;
156: VTOPORTAL(rvp)->pt_size = 0;
157: VTOPORTAL(rvp)->pt_fileid = PORTAL_ROOTFILEID;
158: fmp->pm_root = rvp;
159: fmp->pm_server = fp; fp->f_count++;
160:
1.5 mycroft 161: mp->mnt_flag |= MNT_LOCAL;
1.26.2.2 jdolecek 162: mp->mnt_data = fmp;
1.24 assar 163: vfs_getnewfsid(mp);
1.1 cgd 164:
1.10 mycroft 165: (void) copyinstr(path, mp->mnt_stat.f_mntonname, MNAMELEN - 1, &size);
1.20 perry 166: memset(mp->mnt_stat.f_mntonname + size, 0, MNAMELEN - size);
1.10 mycroft 167: (void) copyinstr(args.pa_config, mp->mnt_stat.f_mntfromname,
168: MNAMELEN - 1, &size);
1.20 perry 169: memset(mp->mnt_stat.f_mntfromname + size, 0, MNAMELEN - size);
1.1 cgd 170: return (0);
171: }
172:
1.5 mycroft 173: int
1.1 cgd 174: portal_start(mp, flags, p)
175: struct mount *mp;
176: int flags;
177: struct proc *p;
178: {
1.5 mycroft 179:
1.1 cgd 180: return (0);
181: }
182:
1.5 mycroft 183: int
1.1 cgd 184: portal_unmount(mp, mntflags, p)
185: struct mount *mp;
186: int mntflags;
187: struct proc *p;
188: {
189: struct vnode *rootvp = VFSTOPORTAL(mp)->pm_root;
1.5 mycroft 190: int error, flags = 0;
1.1 cgd 191:
1.17 fvdl 192: if (mntflags & MNT_FORCE)
1.1 cgd 193: flags |= FORCECLOSE;
194:
195: /*
196: * Clear out buffer cache. I don't think we
197: * ever get anything cached at this level at the
198: * moment, but who knows...
199: */
1.5 mycroft 200: #ifdef notyet
1.1 cgd 201: mntflushbuf(mp, 0);
202: if (mntinvalbuf(mp, 1))
203: return (EBUSY);
1.5 mycroft 204: #endif
1.1 cgd 205: if (rootvp->v_usecount > 1)
206: return (EBUSY);
1.14 christos 207: if ((error = vflush(mp, rootvp, flags)) != 0)
1.1 cgd 208: return (error);
209:
210: /*
211: * Release reference on underlying root vnode
212: */
213: vrele(rootvp);
214: /*
215: * And blow it away for future re-use
216: */
217: vgone(rootvp);
218: /*
219: * Shutdown the socket. This will cause the select in the
220: * daemon to wake up, and then the accept will get ECONNABORTED
221: * which it interprets as a request to go and bury itself.
222: */
1.22 thorpej 223: FILE_USE(VFSTOPORTAL(mp)->pm_server);
1.1 cgd 224: soshutdown((struct socket *) VFSTOPORTAL(mp)->pm_server->f_data, 2);
225: /*
226: * Discard reference to underlying file. Must call closef because
227: * this may be the last reference.
228: */
229: closef(VFSTOPORTAL(mp)->pm_server, (struct proc *) 0);
230: /*
231: * Finally, throw away the portalmount structure
232: */
233: free(mp->mnt_data, M_UFSMNT); /* XXX */
234: mp->mnt_data = 0;
1.5 mycroft 235: return (0);
1.1 cgd 236: }
237:
1.5 mycroft 238: int
1.1 cgd 239: portal_root(mp, vpp)
240: struct mount *mp;
241: struct vnode **vpp;
242: {
243: struct vnode *vp;
244:
245: /*
246: * Return locked reference to root.
247: */
248: vp = VFSTOPORTAL(mp)->pm_root;
249: VREF(vp);
1.17 fvdl 250: vn_lock(vp, LK_EXCLUSIVE | LK_RETRY);
1.1 cgd 251: *vpp = vp;
252: return (0);
253: }
254:
1.5 mycroft 255: int
1.1 cgd 256: portal_quotactl(mp, cmd, uid, arg, p)
257: struct mount *mp;
258: int cmd;
259: uid_t uid;
260: caddr_t arg;
261: struct proc *p;
262: {
1.5 mycroft 263:
1.1 cgd 264: return (EOPNOTSUPP);
265: }
266:
1.5 mycroft 267: int
1.1 cgd 268: portal_statfs(mp, sbp, p)
269: struct mount *mp;
270: struct statfs *sbp;
271: struct proc *p;
272: {
273:
274: sbp->f_bsize = DEV_BSIZE;
1.3 cgd 275: sbp->f_iosize = DEV_BSIZE;
1.1 cgd 276: sbp->f_blocks = 2; /* 1K to keep df happy */
277: sbp->f_bfree = 0;
278: sbp->f_bavail = 0;
279: sbp->f_files = 1; /* Allow for "." */
280: sbp->f_ffree = 0; /* See comments above */
1.17 fvdl 281: #ifdef COMPAT_09
282: sbp->f_type = 12;
283: #else
284: sbp->f_type = 0;
285: #endif
1.1 cgd 286: if (sbp != &mp->mnt_stat) {
1.20 perry 287: memcpy(&sbp->f_fsid, &mp->mnt_stat.f_fsid, sizeof(sbp->f_fsid));
288: memcpy(sbp->f_mntonname, mp->mnt_stat.f_mntonname, MNAMELEN);
289: memcpy(sbp->f_mntfromname, mp->mnt_stat.f_mntfromname, MNAMELEN);
1.1 cgd 290: }
1.10 mycroft 291: strncpy(sbp->f_fstypename, mp->mnt_op->vfs_name, MFSNAMELEN);
1.1 cgd 292: return (0);
293: }
294:
1.14 christos 295: /*ARGSUSED*/
1.5 mycroft 296: int
1.14 christos 297: portal_sync(mp, waitfor, uc, p)
1.1 cgd 298: struct mount *mp;
299: int waitfor;
1.14 christos 300: struct ucred *uc;
301: struct proc *p;
1.1 cgd 302: {
1.5 mycroft 303:
1.1 cgd 304: return (0);
305: }
306:
1.5 mycroft 307: int
308: portal_vget(mp, ino, vpp)
309: struct mount *mp;
310: ino_t ino;
311: struct vnode **vpp;
312: {
313:
314: return (EOPNOTSUPP);
315: }
316:
317: int
1.21 wrstuden 318: portal_fhtovp(mp, fhp, vpp)
1.1 cgd 319: struct mount *mp;
320: struct fid *fhp;
1.21 wrstuden 321: struct vnode **vpp;
322: {
323:
324: return (EOPNOTSUPP);
325: }
326:
327: int
328: portal_checkexp(mp, mb, what, anon)
329: struct mount *mp;
1.14 christos 330: struct mbuf *mb;
331: int *what;
332: struct ucred **anon;
1.1 cgd 333: {
1.5 mycroft 334:
1.1 cgd 335: return (EOPNOTSUPP);
336: }
337:
1.5 mycroft 338: int
1.1 cgd 339: portal_vptofh(vp, fhp)
340: struct vnode *vp;
341: struct fid *fhp;
342: {
1.5 mycroft 343:
1.1 cgd 344: return (EOPNOTSUPP);
345: }
346:
1.17 fvdl 347: int
348: portal_sysctl(name, namelen, oldp, oldlenp, newp, newlen, p)
349: int *name;
350: u_int namelen;
351: void *oldp;
352: size_t *oldlenp;
353: void *newp;
354: size_t newlen;
355: struct proc *p;
356: {
357: return (EOPNOTSUPP);
358: }
359:
1.25 jdolecek 360: extern const struct vnodeopv_desc portal_vnodeop_opv_desc;
1.16 thorpej 361:
1.25 jdolecek 362: const struct vnodeopv_desc * const portal_vnodeopv_descs[] = {
1.16 thorpej 363: &portal_vnodeop_opv_desc,
364: NULL,
365: };
366:
1.1 cgd 367: struct vfsops portal_vfsops = {
1.2 cgd 368: MOUNT_PORTAL,
1.1 cgd 369: portal_mount,
370: portal_start,
371: portal_unmount,
372: portal_root,
373: portal_quotactl,
374: portal_statfs,
375: portal_sync,
1.5 mycroft 376: portal_vget,
1.1 cgd 377: portal_fhtovp,
378: portal_vptofh,
379: portal_init,
1.26.2.1 thorpej 380: NULL,
1.23 jdolecek 381: portal_done,
1.17 fvdl 382: portal_sysctl,
1.16 thorpej 383: NULL, /* vfs_mountroot */
1.21 wrstuden 384: portal_checkexp,
1.16 thorpej 385: portal_vnodeopv_descs,
1.1 cgd 386: };
CVSweb <webmaster@jp.NetBSD.org>
![[BACK]](/icons/back.gif){kind=icon}
Return to portal_vfsops.c CVS log ![[TXT]](/icons/text.gif){kind=icon}
![[DIR]](/icons/dir.gif){kind=icon}
Up to [cvs.NetBSD.org] / src / sys / miscfs / portal