758 lines
19 KiB
C
758 lines
19 KiB
C
/* $NetBSD: coda_vfsops.c,v 1.5 1998/09/25 15:01:13 rvb Exp $ */
|
|
|
|
/*
|
|
*
|
|
* 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.
|
|
*
|
|
* @(#) cfs/coda_vfsops.c,v 1.1.1.1 1998/08/29 21:26:45 rvb Exp $
|
|
*/
|
|
|
|
/*
|
|
* Mach Operating System
|
|
* Copyright (c) 1989 Carnegie-Mellon University
|
|
* All rights reserved. The CMU software License Agreement specifies
|
|
* the terms and conditions for use and redistribution.
|
|
*/
|
|
|
|
/*
|
|
* This code was written for the Coda file system at Carnegie Mellon
|
|
* University. Contributers include David Steere, James Kistler, and
|
|
* M. Satyanarayanan.
|
|
*/
|
|
|
|
/*
|
|
* HISTORY
|
|
* $Log: coda_vfsops.c,v $
|
|
* Revision 1.5 1998/09/25 15:01:13 rvb
|
|
* Conditionalize "stray" printouts under DIAGNOSTIC and DEBUG.
|
|
* Make files compile if DEBUG is on (from Alan Barrett). Finally,
|
|
* make coda an lkm.
|
|
*
|
|
* Revision 1.4 1998/09/15 02:03:00 rvb
|
|
* Final piece of rename cfs->coda
|
|
*
|
|
* Revision 1.3 1998/09/12 15:05:49 rvb
|
|
* Change cfs/CFS in symbols, strings and constants to coda/CODA
|
|
* to avoid fs conflicts.
|
|
*
|
|
* Revision 1.2 1998/09/08 17:12:47 rvb
|
|
* Pass2 complete
|
|
*
|
|
* Revision 1.1.1.1 1998/08/29 21:26:45 rvb
|
|
* Very Preliminary Coda
|
|
*
|
|
* Revision 1.11 1998/08/28 18:12:22 rvb
|
|
* Now it also works on FreeBSD -current. This code will be
|
|
* committed to the FreeBSD -current and NetBSD -current
|
|
* trees. It will then be tailored to the particular platform
|
|
* by flushing conditional code.
|
|
*
|
|
* Revision 1.10 1998/08/18 17:05:19 rvb
|
|
* Don't use __RCSID now
|
|
*
|
|
* Revision 1.9 1998/08/18 16:31:44 rvb
|
|
* Sync the code for NetBSD -current; test on 1.3 later
|
|
*
|
|
* Revision 1.8 98/02/24 22:22:48 rvb
|
|
* Fixes up mainly to flush iopen and friends
|
|
*
|
|
* Revision 1.7 98/01/23 11:53:45 rvb
|
|
* Bring RVB_CODA1_1 to HEAD
|
|
*
|
|
* Revision 1.6.2.6 98/01/23 11:21:07 rvb
|
|
* Sync with 2.2.5
|
|
*
|
|
* Revision 1.6.2.5 98/01/22 13:05:33 rvb
|
|
* Move make_coda_node ctlfid later so vfsp is known
|
|
*
|
|
* Revision 1.6.2.4 97/12/19 14:26:05 rvb
|
|
* session id
|
|
*
|
|
* Revision 1.6.2.3 97/12/16 12:40:11 rvb
|
|
* Sync with 1.3
|
|
*
|
|
* Revision 1.6.2.2 97/12/10 11:40:25 rvb
|
|
* No more ody
|
|
*
|
|
* Revision 1.6.2.1 97/12/06 17:41:24 rvb
|
|
* Sync with peters coda.h
|
|
*
|
|
* Revision 1.6 97/12/05 10:39:21 rvb
|
|
* Read CHANGES
|
|
*
|
|
* Revision 1.5.14.8 97/11/24 15:44:46 rvb
|
|
* Final cfs_venus.c w/o macros, but one locking bug
|
|
*
|
|
* Revision 1.5.14.7 97/11/21 13:22:03 rvb
|
|
* Catch a few coda_calls in coda_vfsops.c
|
|
*
|
|
* Revision 1.5.14.6 97/11/20 11:46:48 rvb
|
|
* Capture current cfs_venus
|
|
*
|
|
* Revision 1.5.14.5 97/11/18 10:27:17 rvb
|
|
* cfs_nbsd.c is DEAD!!!; integrated into cfs_vf/vnops.c
|
|
* cfs_nb_foo and cfs_foo are joined
|
|
*
|
|
* Revision 1.5.14.4 97/11/13 22:03:01 rvb
|
|
* pass2 cfs_NetBSD.h mt
|
|
*
|
|
* Revision 1.5.14.3 97/11/12 12:09:40 rvb
|
|
* reorg pass1
|
|
*
|
|
* Revision 1.5.14.2 97/10/29 16:06:28 rvb
|
|
* Kill DYING
|
|
*
|
|
* Revision 1.5.14.1 1997/10/28 23:10:17 rvb
|
|
* >64Meg; venus can be killed!
|
|
*
|
|
* Revision 1.5 1997/01/13 17:11:07 bnoble
|
|
* Coda statfs needs to return something other than -1 for blocks avail. and
|
|
* files available for wabi (and other windowsish) programs to install
|
|
* there correctly.
|
|
*
|
|
* Revision 1.4 1996/12/12 22:11:00 bnoble
|
|
* Fixed the "downcall invokes venus operation" deadlock in all known cases.
|
|
* There may be more
|
|
*
|
|
* Revision 1.3 1996/11/08 18:06:12 bnoble
|
|
* Minor changes in vnode operation signature, VOP_UPDATE signature, and
|
|
* some newly defined bits in the include files.
|
|
*
|
|
* Revision 1.2 1996/01/02 16:57:04 bnoble
|
|
* Added support for Coda MiniCache and raw inode calls (final commit)
|
|
*
|
|
* Revision 1.1.2.1 1995/12/20 01:57:32 bnoble
|
|
* Added CODA-specific files
|
|
*
|
|
* Revision 3.1.1.1 1995/03/04 19:08:02 bnoble
|
|
* Branch for NetBSD port revisions
|
|
*
|
|
* Revision 3.1 1995/03/04 19:08:01 bnoble
|
|
* Bump to major revision 3 to prepare for NetBSD port
|
|
*
|
|
* Revision 2.4 1995/02/17 16:25:22 dcs
|
|
* These versions represent several changes:
|
|
* 1. Allow venus to restart even if outstanding references exist.
|
|
* 2. Have only one ctlvp per client, as opposed to one per mounted cfs device.d
|
|
* 3. Allow ody_expand to return many members, not just one.
|
|
*
|
|
* Revision 2.3 94/10/14 09:58:21 dcs
|
|
* Made changes 'cause sun4s have braindead compilers
|
|
*
|
|
* Revision 2.2 94/10/12 16:46:33 dcs
|
|
* Cleaned kernel/venus interface by removing XDR junk, plus
|
|
* so cleanup to allow this code to be more easily ported.
|
|
*
|
|
* Revision 1.3 93/05/28 16:24:29 bnoble
|
|
* *** empty log message ***
|
|
*
|
|
* Revision 1.2 92/10/27 17:58:24 lily
|
|
* merge kernel/latest and alpha/src/cfs
|
|
*
|
|
* Revision 2.3 92/09/30 14:16:32 mja
|
|
* Added call to coda_flush to coda_unmount.
|
|
* [90/12/15 dcs]
|
|
*
|
|
* Added contributors blurb.
|
|
* [90/12/13 jjk]
|
|
*
|
|
* Revision 2.2 90/07/05 11:26:40 mrt
|
|
* Created for the Coda File System.
|
|
* [90/05/23 dcs]
|
|
*
|
|
* Revision 1.3 90/05/31 17:01:42 dcs
|
|
* Prepare for merge with facilities kernel.
|
|
*
|
|
*
|
|
*/
|
|
|
|
#ifdef _LKM
|
|
#define NVCODA 4
|
|
#else
|
|
#include <vcoda.h>
|
|
#endif
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/malloc.h>
|
|
#include <sys/conf.h>
|
|
#include <sys/namei.h>
|
|
#include <sys/mount.h>
|
|
#include <sys/proc.h>
|
|
#include <sys/select.h>
|
|
|
|
#include <coda/coda.h>
|
|
#include <coda/cnode.h>
|
|
#include <coda/coda_vfsops.h>
|
|
#include <coda/coda_venus.h>
|
|
#include <coda/coda_subr.h>
|
|
#include <coda/coda_opstats.h>
|
|
/* for VN_RDEV */
|
|
#include <miscfs/specfs/specdev.h>
|
|
|
|
int codadebug = 0;
|
|
|
|
int coda_vfsop_print_entry = 0;
|
|
#define ENTRY if(coda_vfsop_print_entry) myprintf(("Entered %s\n",__FUNCTION__))
|
|
|
|
struct vnode *coda_ctlvp;
|
|
struct coda_mntinfo coda_mnttbl[NVCODA]; /* indexed by minor device number */
|
|
|
|
/* structure to keep statistics of internally generated/satisfied calls */
|
|
|
|
struct coda_op_stats coda_vfsopstats[CODA_VFSOPS_SIZE];
|
|
|
|
#define MARK_ENTRY(op) (coda_vfsopstats[op].entries++)
|
|
#define MARK_INT_SAT(op) (coda_vfsopstats[op].sat_intrn++)
|
|
#define MARK_INT_FAIL(op) (coda_vfsopstats[op].unsat_intrn++)
|
|
#define MRAK_INT_GEN(op) (coda_vfsopstats[op].gen_intrn++)
|
|
|
|
extern int coda_nc_initialized; /* Set if cache has been initialized */
|
|
extern int vc_nb_open __P((dev_t, int, int, struct proc *));
|
|
extern struct cdevsw cdevsw[]; /* For sanity check in coda_mount */
|
|
extern struct vnodeopv_desc coda_vnodeop_opv_desc;
|
|
|
|
struct vnodeopv_desc *coda_vnodeopv_descs[] = {
|
|
&coda_vnodeop_opv_desc,
|
|
NULL,
|
|
};
|
|
|
|
struct vfsops coda_vfsops = {
|
|
MOUNT_CODA,
|
|
coda_mount,
|
|
coda_start,
|
|
coda_unmount,
|
|
coda_root,
|
|
coda_quotactl,
|
|
coda_nb_statfs,
|
|
coda_sync,
|
|
coda_vget,
|
|
(int (*) (struct mount *, struct fid *, struct mbuf *, struct vnode **,
|
|
int *, struct ucred **))
|
|
eopnotsupp,
|
|
(int (*) (struct vnode *, struct fid *)) eopnotsupp,
|
|
coda_init,
|
|
coda_sysctl,
|
|
(int (*)(void)) eopnotsupp,
|
|
coda_vnodeopv_descs,
|
|
0
|
|
};
|
|
|
|
int
|
|
coda_vfsopstats_init(void)
|
|
{
|
|
register int i;
|
|
|
|
for (i=0;i<CODA_VFSOPS_SIZE;i++) {
|
|
coda_vfsopstats[i].opcode = i;
|
|
coda_vfsopstats[i].entries = 0;
|
|
coda_vfsopstats[i].sat_intrn = 0;
|
|
coda_vfsopstats[i].unsat_intrn = 0;
|
|
coda_vfsopstats[i].gen_intrn = 0;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* cfs mount vfsop
|
|
* Set up mount info record and attach it to vfs struct.
|
|
*/
|
|
/*ARGSUSED*/
|
|
int
|
|
coda_mount(vfsp, path, data, ndp, p)
|
|
struct mount *vfsp; /* Allocated and initialized by mount(2) */
|
|
const char *path; /* path covered: ignored by the fs-layer */
|
|
void *data; /* Need to define a data type for this in netbsd? */
|
|
struct nameidata *ndp; /* Clobber this to lookup the device name */
|
|
struct proc *p; /* The ever-famous proc pointer */
|
|
{
|
|
struct vnode *dvp;
|
|
struct cnode *cp;
|
|
dev_t dev;
|
|
struct coda_mntinfo *mi;
|
|
struct vnode *rootvp;
|
|
ViceFid rootfid;
|
|
ViceFid ctlfid;
|
|
int error;
|
|
|
|
ENTRY;
|
|
|
|
coda_vfsopstats_init();
|
|
coda_vnodeopstats_init();
|
|
|
|
MARK_ENTRY(CODA_MOUNT_STATS);
|
|
if (CODA_MOUNTED(vfsp)) {
|
|
MARK_INT_FAIL(CODA_MOUNT_STATS);
|
|
return(EBUSY);
|
|
}
|
|
|
|
/* Validate mount device. Similar to getmdev(). */
|
|
|
|
NDINIT(ndp, LOOKUP, FOLLOW, UIO_USERSPACE, data, p);
|
|
error = namei(ndp);
|
|
dvp = ndp->ni_vp;
|
|
|
|
if (error) {
|
|
MARK_INT_FAIL(CODA_MOUNT_STATS);
|
|
return (error);
|
|
}
|
|
if (dvp->v_type != VCHR) {
|
|
MARK_INT_FAIL(CODA_MOUNT_STATS);
|
|
vrele(dvp);
|
|
return(ENXIO);
|
|
}
|
|
dev = dvp->v_specinfo->si_rdev;
|
|
vrele(dvp);
|
|
if (major(dev) >= nchrdev || major(dev) < 0) {
|
|
MARK_INT_FAIL(CODA_MOUNT_STATS);
|
|
return(ENXIO);
|
|
}
|
|
|
|
/*
|
|
* See if the device table matches our expectations.
|
|
*/
|
|
if (cdevsw[major(dev)].d_open != vc_nb_open)
|
|
{
|
|
MARK_INT_FAIL(CODA_MOUNT_STATS);
|
|
return(ENXIO);
|
|
}
|
|
|
|
if (minor(dev) >= NVCODA || minor(dev) < 0) {
|
|
MARK_INT_FAIL(CODA_MOUNT_STATS);
|
|
return(ENXIO);
|
|
}
|
|
|
|
/*
|
|
* Initialize the mount record and link it to the vfs struct
|
|
*/
|
|
mi = &coda_mnttbl[minor(dev)];
|
|
|
|
if (!VC_OPEN(&mi->mi_vcomm)) {
|
|
MARK_INT_FAIL(CODA_MOUNT_STATS);
|
|
return(ENODEV);
|
|
}
|
|
|
|
/* No initialization (here) of mi_vcomm! */
|
|
vfsp->mnt_data = (qaddr_t)mi;
|
|
vfsp->mnt_stat.f_fsid.val[0] = 0;
|
|
vfsp->mnt_stat.f_fsid.val[1] = makefstype(MOUNT_CODA);
|
|
mi->mi_vfsp = vfsp;
|
|
|
|
/*
|
|
* Make a root vnode to placate the Vnode interface, but don't
|
|
* actually make the CODA_ROOT call to venus until the first call
|
|
* to coda_root in case a server is down while venus is starting.
|
|
*/
|
|
rootfid.Volume = 0;
|
|
rootfid.Vnode = 0;
|
|
rootfid.Unique = 0;
|
|
cp = make_coda_node(&rootfid, vfsp, VDIR);
|
|
rootvp = CTOV(cp);
|
|
rootvp->v_flag |= VROOT;
|
|
|
|
ctlfid.Volume = CTL_VOL;
|
|
ctlfid.Vnode = CTL_VNO;
|
|
ctlfid.Unique = CTL_UNI;
|
|
/* cp = make_coda_node(&ctlfid, vfsp, VCHR);
|
|
The above code seems to cause a loop in the cnode links.
|
|
I don't totally understand when it happens, it is caught
|
|
when closing down the system.
|
|
*/
|
|
cp = make_coda_node(&ctlfid, 0, VCHR);
|
|
|
|
coda_ctlvp = CTOV(cp);
|
|
|
|
/* Add vfs and rootvp to chain of vfs hanging off mntinfo */
|
|
mi->mi_vfsp = vfsp;
|
|
mi->mi_rootvp = rootvp;
|
|
|
|
/* set filesystem block size */
|
|
vfsp->mnt_stat.f_bsize = 8192; /* XXX -JJK */
|
|
|
|
/* error is currently guaranteed to be zero, but in case some
|
|
code changes... */
|
|
CODADEBUG(1,
|
|
myprintf(("coda_mount returned %d\n",error)););
|
|
if (error)
|
|
MARK_INT_FAIL(CODA_MOUNT_STATS);
|
|
else
|
|
MARK_INT_SAT(CODA_MOUNT_STATS);
|
|
|
|
return(error);
|
|
}
|
|
|
|
int
|
|
coda_start(vfsp, flags, p)
|
|
struct mount *vfsp;
|
|
int flags;
|
|
struct proc *p;
|
|
{
|
|
ENTRY;
|
|
return (0);
|
|
}
|
|
|
|
int
|
|
coda_unmount(vfsp, mntflags, p)
|
|
struct mount *vfsp;
|
|
int mntflags;
|
|
struct proc *p;
|
|
{
|
|
struct coda_mntinfo *mi = vftomi(vfsp);
|
|
int active, error = 0;
|
|
|
|
ENTRY;
|
|
MARK_ENTRY(CODA_UMOUNT_STATS);
|
|
if (!CODA_MOUNTED(vfsp)) {
|
|
MARK_INT_FAIL(CODA_UMOUNT_STATS);
|
|
return(EINVAL);
|
|
}
|
|
|
|
if (mi->mi_vfsp == vfsp) { /* We found the victim */
|
|
if (!IS_UNMOUNTING(VTOC(mi->mi_rootvp)))
|
|
return (EBUSY); /* Venus is still running */
|
|
|
|
#ifdef DEBUG
|
|
printf("coda_unmount: ROOT: vp %p, cp %p\n", mi->mi_rootvp, VTOC(mi->mi_rootvp));
|
|
#endif
|
|
vrele(mi->mi_rootvp);
|
|
|
|
active = coda_kill(vfsp, NOT_DOWNCALL);
|
|
error = vflush(mi->mi_vfsp, NULLVP, FORCECLOSE);
|
|
printf("coda_unmount: active = %d, vflush active %d\n", active, error);
|
|
error = 0;
|
|
|
|
/* I'm going to take this out to allow lookups to go through. I'm
|
|
* not sure it's important anyway. -- DCS 2/2/94
|
|
*/
|
|
/* vfsp->VFS_DATA = NULL; */
|
|
|
|
/* No more vfsp's to hold onto */
|
|
mi->mi_vfsp = NULL;
|
|
mi->mi_rootvp = NULL;
|
|
|
|
if (error)
|
|
MARK_INT_FAIL(CODA_UMOUNT_STATS);
|
|
else
|
|
MARK_INT_SAT(CODA_UMOUNT_STATS);
|
|
|
|
return(error);
|
|
}
|
|
return (EINVAL);
|
|
}
|
|
|
|
/*
|
|
* find root of cfs
|
|
*/
|
|
int
|
|
coda_root(vfsp, vpp)
|
|
struct mount *vfsp;
|
|
struct vnode **vpp;
|
|
{
|
|
struct coda_mntinfo *mi = vftomi(vfsp);
|
|
struct vnode **result;
|
|
int error;
|
|
struct proc *p = curproc; /* XXX - bnoble */
|
|
ViceFid VFid;
|
|
|
|
ENTRY;
|
|
MARK_ENTRY(CODA_ROOT_STATS);
|
|
result = NULL;
|
|
|
|
if (vfsp == mi->mi_vfsp) {
|
|
if ((VTOC(mi->mi_rootvp)->c_fid.Volume != 0) ||
|
|
(VTOC(mi->mi_rootvp)->c_fid.Vnode != 0) ||
|
|
(VTOC(mi->mi_rootvp)->c_fid.Unique != 0))
|
|
{ /* Found valid root. */
|
|
*vpp = mi->mi_rootvp;
|
|
/* On Mach, this is vref. On NetBSD, VOP_LOCK */
|
|
vref(*vpp);
|
|
vn_lock(*vpp, LK_EXCLUSIVE);
|
|
MARK_INT_SAT(CODA_ROOT_STATS);
|
|
return(0);
|
|
}
|
|
}
|
|
|
|
error = venus_root(vftomi(vfsp), p->p_cred->pc_ucred, p, &VFid);
|
|
|
|
if (!error) {
|
|
/*
|
|
* Save the new rootfid in the cnode, and rehash the cnode into the
|
|
* cnode hash with the new fid key.
|
|
*/
|
|
coda_unsave(VTOC(mi->mi_rootvp));
|
|
VTOC(mi->mi_rootvp)->c_fid = VFid;
|
|
coda_save(VTOC(mi->mi_rootvp));
|
|
|
|
*vpp = mi->mi_rootvp;
|
|
vref(*vpp);
|
|
vn_lock(*vpp, LK_EXCLUSIVE);
|
|
MARK_INT_SAT(CODA_ROOT_STATS);
|
|
goto exit;
|
|
} else if (error == ENODEV) {
|
|
/* Gross hack here! */
|
|
/*
|
|
* If Venus fails to respond to the CODA_ROOT call, coda_call returns
|
|
* ENODEV. Return the uninitialized root vnode to allow vfs
|
|
* operations such as unmount to continue. Without this hack,
|
|
* there is no way to do an unmount if Venus dies before a
|
|
* successful CODA_ROOT call is done. All vnode operations
|
|
* will fail.
|
|
*/
|
|
*vpp = mi->mi_rootvp;
|
|
vref(*vpp);
|
|
vn_lock(*vpp, LK_EXCLUSIVE);
|
|
MARK_INT_FAIL(CODA_ROOT_STATS);
|
|
error = 0;
|
|
goto exit;
|
|
} else {
|
|
CODADEBUG( CODA_ROOT, myprintf(("error %d in CODA_ROOT\n", error)); );
|
|
MARK_INT_FAIL(CODA_ROOT_STATS);
|
|
|
|
goto exit;
|
|
}
|
|
exit:
|
|
return(error);
|
|
}
|
|
|
|
int
|
|
coda_quotactl(vfsp, cmd, uid, arg, p)
|
|
struct mount *vfsp;
|
|
int cmd;
|
|
uid_t uid;
|
|
caddr_t arg;
|
|
struct proc *p;
|
|
{
|
|
ENTRY;
|
|
return (EOPNOTSUPP);
|
|
}
|
|
|
|
/*
|
|
* Get file system statistics.
|
|
*/
|
|
int
|
|
coda_nb_statfs(vfsp, sbp, p)
|
|
register struct mount *vfsp;
|
|
struct statfs *sbp;
|
|
struct proc *p;
|
|
{
|
|
ENTRY;
|
|
/* MARK_ENTRY(CODA_STATFS_STATS); */
|
|
if (!CODA_MOUNTED(vfsp)) {
|
|
/* MARK_INT_FAIL(CODA_STATFS_STATS);*/
|
|
return(EINVAL);
|
|
}
|
|
|
|
bzero(sbp, sizeof(struct statfs));
|
|
/* XXX - what to do about f_flags, others? --bnoble */
|
|
/* Below This is what AFS does
|
|
#define NB_SFS_SIZ 0x895440
|
|
*/
|
|
/* Note: Normal fs's have a bsize of 0x400 == 1024 */
|
|
sbp->f_type = 0;
|
|
sbp->f_bsize = 8192; /* XXX */
|
|
sbp->f_iosize = 8192; /* XXX */
|
|
#define NB_SFS_SIZ 0x8AB75D
|
|
sbp->f_blocks = NB_SFS_SIZ;
|
|
sbp->f_bfree = NB_SFS_SIZ;
|
|
sbp->f_bavail = NB_SFS_SIZ;
|
|
sbp->f_files = NB_SFS_SIZ;
|
|
sbp->f_ffree = NB_SFS_SIZ;
|
|
bcopy((caddr_t)&(vfsp->mnt_stat.f_fsid), (caddr_t)&(sbp->f_fsid), sizeof (fsid_t));
|
|
strncpy(sbp->f_fstypename, MOUNT_CODA, MFSNAMELEN-1);
|
|
strcpy(sbp->f_mntonname, "/coda");
|
|
strcpy(sbp->f_mntfromname, "CODA");
|
|
/* MARK_INT_SAT(CODA_STATFS_STATS); */
|
|
return(0);
|
|
}
|
|
|
|
/*
|
|
* Flush any pending I/O.
|
|
*/
|
|
int
|
|
coda_sync(vfsp, waitfor, cred, p)
|
|
struct mount *vfsp;
|
|
int waitfor;
|
|
struct ucred *cred;
|
|
struct proc *p;
|
|
{
|
|
ENTRY;
|
|
MARK_ENTRY(CODA_SYNC_STATS);
|
|
MARK_INT_SAT(CODA_SYNC_STATS);
|
|
return(0);
|
|
}
|
|
|
|
int
|
|
coda_vget(vfsp, ino, vpp)
|
|
struct mount *vfsp;
|
|
ino_t ino;
|
|
struct vnode **vpp;
|
|
{
|
|
ENTRY;
|
|
return (EOPNOTSUPP);
|
|
}
|
|
|
|
/*
|
|
* fhtovp is now what vget used to be in 4.3-derived systems. For
|
|
* some silly reason, vget is now keyed by a 32 bit ino_t, rather than
|
|
* a type-specific fid.
|
|
*/
|
|
int
|
|
coda_fhtovp(vfsp, fhp, nam, vpp, exflagsp, creadanonp)
|
|
register struct mount *vfsp;
|
|
struct fid *fhp;
|
|
struct mbuf *nam;
|
|
struct vnode **vpp;
|
|
int *exflagsp;
|
|
struct ucred **creadanonp;
|
|
{
|
|
struct cfid *cfid = (struct cfid *)fhp;
|
|
struct cnode *cp = 0;
|
|
int error;
|
|
struct proc *p = curproc; /* XXX -mach */
|
|
ViceFid VFid;
|
|
int vtype;
|
|
|
|
ENTRY;
|
|
|
|
MARK_ENTRY(CODA_VGET_STATS);
|
|
/* Check for vget of control object. */
|
|
if (IS_CTL_FID(&cfid->cfid_fid)) {
|
|
*vpp = coda_ctlvp;
|
|
vref(coda_ctlvp);
|
|
MARK_INT_SAT(CODA_VGET_STATS);
|
|
return(0);
|
|
}
|
|
|
|
error = venus_fhtovp(vftomi(vfsp), &cfid->cfid_fid, p->p_cred->pc_ucred, p, &VFid, &vtype);
|
|
|
|
if (error) {
|
|
CODADEBUG(CODA_VGET, myprintf(("vget error %d\n",error));)
|
|
*vpp = (struct vnode *)0;
|
|
} else {
|
|
CODADEBUG(CODA_VGET,
|
|
myprintf(("vget: vol %lx vno %lx uni %lx type %d result %d\n",
|
|
VFid.Volume, VFid.Vnode, VFid.Unique, vtype, error)); )
|
|
|
|
cp = make_coda_node(&VFid, vfsp, vtype);
|
|
*vpp = CTOV(cp);
|
|
}
|
|
return(error);
|
|
}
|
|
|
|
int
|
|
coda_vptofh(vnp, fidp)
|
|
struct vnode *vnp;
|
|
struct fid *fidp;
|
|
{
|
|
ENTRY;
|
|
return (EOPNOTSUPP);
|
|
}
|
|
|
|
void
|
|
coda_init(void)
|
|
{
|
|
ENTRY;
|
|
}
|
|
|
|
int
|
|
coda_sysctl(name, namelen, oldp, oldlp, newp, newl, p)
|
|
int *name;
|
|
u_int namelen;
|
|
void *oldp;
|
|
size_t *oldlp;
|
|
void *newp;
|
|
size_t newl;
|
|
struct proc *p;
|
|
{
|
|
|
|
/* all sysctl names at this level are terminal */
|
|
if (namelen != 1)
|
|
return (ENOTDIR); /* overloaded */
|
|
|
|
switch (name[0]) {
|
|
/*
|
|
case FFS_CLUSTERREAD:
|
|
return (sysctl_int(oldp, oldlp, newp, newl, &doclusterread));
|
|
*/
|
|
default:
|
|
return (EOPNOTSUPP);
|
|
}
|
|
/* NOTREACHED */
|
|
}
|
|
|
|
/*
|
|
* To allow for greater ease of use, some vnodes may be orphaned when
|
|
* Venus dies. Certain operations should still be allowed to go
|
|
* through, but without propagating ophan-ness. So this function will
|
|
* get a new vnode for the file from the current run of Venus. */
|
|
|
|
int
|
|
getNewVnode(vpp)
|
|
struct vnode **vpp;
|
|
{
|
|
struct cfid cfid;
|
|
struct coda_mntinfo *mi = vftomi((*vpp)->v_mount);
|
|
|
|
ENTRY;
|
|
|
|
cfid.cfid_len = (short)sizeof(ViceFid);
|
|
cfid.cfid_fid = VTOC(*vpp)->c_fid; /* Structure assignment. */
|
|
/* XXX ? */
|
|
|
|
/* We're guessing that if set, the 1st element on the list is a
|
|
* valid vnode to use. If not, return ENODEV as venus is dead.
|
|
*/
|
|
if (mi->mi_vfsp == NULL)
|
|
return ENODEV;
|
|
|
|
return coda_fhtovp(mi->mi_vfsp, (struct fid*)&cfid, NULL, vpp,
|
|
NULL, NULL);
|
|
}
|
|
|
|
#include <ufs/ufs/quota.h>
|
|
#include <ufs/ufs/ufsmount.h>
|
|
/* get the mount structure corresponding to a given device. Assume
|
|
* device corresponds to a UFS. Return NULL if no device is found.
|
|
*/
|
|
struct mount *devtomp(dev)
|
|
dev_t dev;
|
|
{
|
|
struct mount *mp, *nmp;
|
|
|
|
for (mp = mountlist.cqh_first; mp != (void*)&mountlist; mp = nmp) {
|
|
nmp = mp->mnt_list.cqe_next;
|
|
if ((!strcmp(mp->mnt_op->vfs_name, MOUNT_UFS)) &&
|
|
((VFSTOUFS(mp))->um_dev == (dev_t) dev)) {
|
|
/* mount corresponds to UFS and the device matches one we want */
|
|
return(mp);
|
|
}
|
|
}
|
|
/* mount structure wasn't found */
|
|
return(NULL);
|
|
}
|