3 * Coda: an Experimental Distributed File System
6 * Copyright (c) 1987-1998 Carnegie Mellon University
9 * Permission to use, copy, modify and distribute this software and its
10 * documentation is hereby granted, provided that both the copyright
11 * notice and this permission notice appear in all copies of the
12 * software, derivative works or modified versions, and any portions
13 * thereof, and that both notices appear in supporting documentation, and
14 * that credit is given to Carnegie Mellon University in all documents
15 * and publicity pertaining to direct or indirect use of this code or its
18 * CODA IS AN EXPERIMENTAL SOFTWARE SYSTEM AND IS KNOWN TO HAVE BUGS,
19 * SOME OF WHICH MAY HAVE SERIOUS CONSEQUENCES. CARNEGIE MELLON ALLOWS
20 * FREE USE OF THIS SOFTWARE IN ITS "AS IS" CONDITION. CARNEGIE MELLON
21 * DISCLAIMS ANY LIABILITY OF ANY KIND FOR ANY DAMAGES WHATSOEVER
22 * RESULTING DIRECTLY OR INDIRECTLY FROM THE USE OF THIS SOFTWARE OR OF
23 * ANY DERIVATIVE WORK.
25 * Carnegie Mellon encourages users of this software to return any
26 * improvements or extensions that they make, and to grant Carnegie
27 * Mellon the rights to redistribute these changes without encumbrance.
29 * @(#) src/sys/coda/coda_fbsd.cr,v 1.1.1.1 1998/08/29 21:14:52 rvb Exp $
30 * $FreeBSD: src/sys/coda/coda_fbsd.c,v 1.18 1999/09/25 18:23:43 phk Exp $
31 * $DragonFly: src/sys/vfs/coda/Attic/coda_fbsd.c,v 1.8 2004/11/12 00:09:28 dillon Exp $
35 #include "use_vcoda.h"
37 #include <sys/param.h>
38 #include <sys/systm.h>
39 #include <sys/kernel.h>
41 #include <sys/malloc.h>
42 #include <sys/fcntl.h>
43 #include <sys/ucred.h>
44 #include <sys/vnode.h>
48 #include <vm/vnode_pager.h>
52 #include "coda_vnops.h"
53 #include "coda_psdev.h"
56 From: "Jordan K. Hubbard" <jkh@time.cdrom.com>
57 Subject: Re: New 3.0 SNAPshot CDROM about ready for production..
58 To: "Robert.V.Baron" <rvb@GLUCK.CODA.CS.CMU.EDU>
59 Date: Fri, 20 Feb 1998 15:57:01 -0800
61 > Also I need a character device major number. (and might want to reserve
62 > a block of 10 syscalls.)
64 Just one char device number? No block devices? Very well, cdev 93 is yours!
69 static struct cdevsw codadevsw = {
76 /* open */ vc_nb_open,
77 /* close */ vc_nb_close,
78 /* read */ vc_nb_read,
79 /* write */ vc_nb_write,
80 /* ioctl */ vc_nb_ioctl,
81 /* poll */ vc_nb_poll,
83 /* strategy */ nostrategy,
89 #define VCDEBUG if (vcdebug) printf
92 codadev_modevent(module_t mod, int type, void *data)
96 cdevsw_add(&codadevsw, 0, 0);
99 cdevsw_remove(&codadevsw, 0, 0);
106 static moduledata_t codadev_mod = {
111 DECLARE_MODULE(codadev, codadev_mod, SI_SUB_DRIVERS, SI_ORDER_MIDDLE+VC_DEV_NO);
114 coda_fbsd_getpages(void *v)
116 struct vop_getpages_args *ap = v;
121 ret = vnode_pager_generic_getpages(ap->a_vp, ap->a_m, ap->a_count,
126 struct vnode *vp = ap->a_vp;
127 struct cnode *cp = VTOC(vp);
128 struct vnode *cfvp = cp->c_ovp;
129 int opened_internally = 0;
130 struct ucred *cred = (struct ucred *) 0;
131 struct proc *p = curproc;
138 /* Redirect the request to UFS. */
141 opened_internally = 1;
143 error = VOP_OPEN(vp, FREAD, cred, NULL, p);
144 printf("coda_getp: Internally Opening %p\n", vp);
147 printf("coda_getpage: VOP_OPEN on container failed %d\n", error);
150 if (vp->v_type == VREG) {
151 error = vfs_object_create(vp, p, cred);
153 printf("coda_getpage: vfs_object_create() returns %d\n", error);
161 printf("coda_getp: has container %p\n", cfvp);
164 printf("coda_fbsd_getpages: using container ");
166 error = vnode_pager_generic_getpages(cfvp, ap->a_m, ap->a_count,
169 error = VOP_GETPAGES(cfvp, ap->a_m, ap->a_count,
170 ap->a_reqpage, ap->a_offset);
171 printf("error = %d\n", error);
173 /* Do an internal close if necessary. */
174 if (opened_internally) {
175 (void)VOP_CLOSE(vp, FREAD, cred, p);
184 coda_fbsd_putpages(void *v)
186 struct vop_putpages_args *ap = v;
189 return vnode_pager_generic_putpages(ap->a_vp, ap->a_m, ap->a_count,
190 ap->a_sync, ap->a_rtvals);