/* * * Coda: an Experimental Distributed File System * Release 3.1 * * Copyright (c) 1987-1998 Carnegie Mellon University * All Rights Reserved * * Permission to use, copy, modify and distribute this software and its * documentation is hereby granted, provided that both the copyright * notice and this permission notice appear in all copies of the * software, derivative works or modified versions, and any portions * thereof, and that both notices appear in supporting documentation, and * that credit is given to Carnegie Mellon University in all documents * and publicity pertaining to direct or indirect use of this code or its * derivatives. * * CODA IS AN EXPERIMENTAL SOFTWARE SYSTEM AND IS KNOWN TO HAVE BUGS, * SOME OF WHICH MAY HAVE SERIOUS CONSEQUENCES. CARNEGIE MELLON ALLOWS * FREE USE OF THIS SOFTWARE IN ITS "AS IS" CONDITION. CARNEGIE MELLON * DISCLAIMS ANY LIABILITY OF ANY KIND FOR ANY DAMAGES WHATSOEVER * RESULTING DIRECTLY OR INDIRECTLY FROM THE USE OF THIS SOFTWARE OR OF * ANY DERIVATIVE WORK. * * Carnegie Mellon encourages users of this software to return any * improvements or extensions that they make, and to grant Carnegie * Mellon the rights to redistribute these changes without encumbrance. * * @(#) src/sys/coda/coda_fbsd.cr,v 1.1.1.1 1998/08/29 21:14:52 rvb Exp $ * $FreeBSD$ * */ #include "vcoda.h" #include <sys/param.h> #include <sys/systm.h> #include <sys/conf.h> #include <sys/fcntl.h> #include <sys/kernel.h> #include <sys/lock.h> #include <sys/malloc.h> #include <sys/ucred.h> #include <sys/vnode.h> #include <vm/vm.h> #include <vm/vnode_pager.h> #include <coda/coda.h> #include <coda/cnode.h> #include <coda/coda_vnops.h> #include <coda/coda_psdev.h> /* From: "Jordan K. Hubbard" <jkh@time.cdrom.com> Subject: Re: New 3.0 SNAPshot CDROM about ready for production.. To: "Robert.V.Baron" <rvb@GLUCK.CODA.CS.CMU.EDU> Date: Fri, 20 Feb 1998 15:57:01 -0800 > Also I need a character device major number. (and might want to reserve > a block of 10 syscalls.) Just one char device number? No block devices? Very well, cdev 93 is yours! */ #define VC_DEV_NO 93 static struct cdevsw codadevsw = { /* open */ vc_nb_open, /* close */ vc_nb_close, /* read */ vc_nb_read, /* write */ vc_nb_write, /* ioctl */ vc_nb_ioctl, /* poll */ vc_nb_poll, /* mmap */ nommap, /* strategy */ nostrategy, /* name */ "Coda", /* maj */ VC_DEV_NO, /* dump */ nodump, /* psize */ nopsize, /* flags */ 0, }; int vcdebug = 1; #define VCDEBUG if (vcdebug) printf static int codadev_modevent(module_t mod, int type, void *data) { switch (type) { case MOD_LOAD: break; case MOD_UNLOAD: break; default: break; } return 0; } static moduledata_t codadev_mod = { "codadev", codadev_modevent, NULL }; DECLARE_MODULE(codadev, codadev_mod, SI_SUB_DRIVERS, SI_ORDER_MIDDLE+VC_DEV_NO); int coda_fbsd_getpages(v) void *v; { struct vop_getpages_args *ap = v; #if 1 return vop_stdgetpages(ap); #else { struct vnode *vp = ap->a_vp; struct cnode *cp = VTOC(vp); struct vnode *cfvp = cp->c_ovp; int opened_internally = 0; struct ucred *cred = (struct ucred *) 0; struct proc *p = curproc; int error = 0; if (IS_CTL_VP(vp)) { return(EINVAL); } /* Redirect the request to UFS. */ if (cfvp == NULL) { opened_internally = 1; error = VOP_OPEN(vp, FREAD, cred, p); printf("coda_getp: Internally Opening %p\n", vp); if (error) { printf("coda_getpage: VOP_OPEN on container failed %d\n", error); return (error); } if (vp->v_type == VREG) { error = vfs_object_create(vp, p, cred); if (error != 0) { printf("coda_getpage: vfs_object_create() returns %d\n", error); vput(vp); return(error); } } cfvp = cp->c_ovp; } else { printf("coda_getp: has container %p\n", cfvp); } printf("coda_fbsd_getpages: using container "); /* error = vnode_pager_generic_getpages(cfvp, ap->a_m, ap->a_count, ap->a_reqpage); */ error = VOP_GETPAGES(cfvp, ap->a_m, ap->a_count, ap->a_reqpage, ap->a_offset); printf("error = %d\n", error); /* Do an internal close if necessary. */ if (opened_internally) { (void)VOP_CLOSE(vp, FREAD, cred, p); } return(error); } #endif } /* for DEVFS, using bpf & tun drivers as examples*/ static void coda_fbsd_drvinit __P((void *unused)); static void coda_fbsd_drvuninit __P((void *unused)); static void coda_fbsd_clone __P((void *arg, char *name, int namelen, dev_t *dev)); static void coda_fbsd_clone(arg, name, namelen, dev) void *arg; char *name; int namelen; dev_t *dev; { int u; if (*dev != NODEV) return; if (dev_stdclone(name,NULL,"cfs",&u) != 1) return; *dev = make_dev(&codadevsw,unit2minor(u),UID_ROOT,GID_WHEEL,0600,"cfs%d",u); coda_mnttbl[unit2minor(u)].dev = *dev; } static void coda_fbsd_drvinit(unused) void *unused; { int i; EVENTHANDLER_REGISTER(dev_clone,coda_fbsd_clone,0,1000); cdevsw_add(&codadevsw); for(i=0;i<NVCODA;i++) coda_mnttbl[i].dev = NULL; } static void coda_fbsd_drvuninit(unused) void *unused; { int i; EVENTHANDLER_DEREGISTER(dev_clone,NULL); for(i=0;i<NVCODA;i++) if(coda_mnttbl[i].dev) destroy_dev(coda_mnttbl[i].dev); cdevsw_remove(&codadevsw); } SYSINIT(coda_fbsd_dev,SI_SUB_DRIVERS,SI_ORDER_MIDDLE+VC_DEV_NO,coda_fbsd_drvinit,NULL); SYSUNINIT(coda_fbsd_dev,SI_SUB_DRIVERS,SI_ORDER_MIDDLE+VC_DEV_NO,coda_fbsd_drvuninit,NULL);