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 1.2 2003/06/17 04:28:19 dillon Exp $
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>
50 #include <coda/coda.h>
51 #include <coda/cnode.h>
52 #include <coda/coda_vnops.h>
53 #include <coda/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 = {
70 /* open */ vc_nb_open,
71 /* close */ vc_nb_close,
72 /* read */ vc_nb_read,
73 /* write */ vc_nb_write,
74 /* ioctl */ vc_nb_ioctl,
75 /* poll */ vc_nb_poll,
77 /* strategy */ nostrategy,
87 #define VCDEBUG if (vcdebug) printf
90 codadev_modevent(module_t mod, int type, void *data)
95 cdevsw_add(&codadevsw);
104 static moduledata_t codadev_mod = {
109 DECLARE_MODULE(codadev, codadev_mod, SI_SUB_DRIVERS, SI_ORDER_MIDDLE+VC_DEV_NO);
112 coda_fbsd_getpages(v)
115 struct vop_getpages_args *ap = v;
120 ret = vnode_pager_generic_getpages(ap->a_vp, ap->a_m, ap->a_count,
125 struct vnode *vp = ap->a_vp;
126 struct cnode *cp = VTOC(vp);
127 struct vnode *cfvp = cp->c_ovp;
128 int opened_internally = 0;
129 struct ucred *cred = (struct ucred *) 0;
130 struct proc *p = curproc;
137 /* Redirect the request to UFS. */
140 opened_internally = 1;
142 error = VOP_OPEN(vp, FREAD, cred, p);
143 printf("coda_getp: Internally Opening %p\n", vp);
146 printf("coda_getpage: VOP_OPEN on container failed %d\n", error);
149 if (vp->v_type == VREG) {
150 error = vfs_object_create(vp, p, cred);
152 printf("coda_getpage: vfs_object_create() returns %d\n", error);
160 printf("coda_getp: has container %p\n", cfvp);
163 printf("coda_fbsd_getpages: using container ");
165 error = vnode_pager_generic_getpages(cfvp, ap->a_m, ap->a_count,
168 error = VOP_GETPAGES(cfvp, ap->a_m, ap->a_count,
169 ap->a_reqpage, ap->a_offset);
170 printf("error = %d\n", error);
172 /* Do an internal close if necessary. */
173 if (opened_internally) {
174 (void)VOP_CLOSE(vp, FREAD, cred, p);
183 coda_fbsd_putpages(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);