diff options
Diffstat (limited to 'sys/fs/coda/coda_fbsd.c')
| -rw-r--r-- | sys/fs/coda/coda_fbsd.c | 190 |
1 files changed, 190 insertions, 0 deletions
diff --git a/sys/fs/coda/coda_fbsd.c b/sys/fs/coda/coda_fbsd.c new file mode 100644 index 0000000..f7143bd --- /dev/null +++ b/sys/fs/coda/coda_fbsd.c @@ -0,0 +1,190 @@ +/* + * + * 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/kernel.h> +#include <sys/proc.h> +#include <sys/malloc.h> +#include <sys/fcntl.h> +#include <sys/ucred.h> +#include <sys/vnode.h> +#include <sys/conf.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, + /* bmaj */ -1 +}; + +int vcdebug = 1; +#define VCDEBUG if (vcdebug) printf + +static int +codadev_modevent(module_t mod, int type, void *data) +{ + + switch (type) { + case MOD_LOAD: + cdevsw_add(&codadevsw); + 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; + int ret = 0; + +#if 1 + /* ??? a_offset */ + ret = vnode_pager_generic_getpages(ap->a_vp, ap->a_m, ap->a_count, + ap->a_reqpage); + return ret; +#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 +} + +int +coda_fbsd_putpages(v) + void *v; +{ + struct vop_putpages_args *ap = v; + + /*??? a_offset */ + return vnode_pager_generic_putpages(ap->a_vp, ap->a_m, ap->a_count, + ap->a_sync, ap->a_rtvals); +} |
