coda_vfsops.c revision 76166
138625Srvb/* 238759Srvb * 338759Srvb * Coda: an Experimental Distributed File System 438759Srvb * Release 3.1 538759Srvb * 638759Srvb * Copyright (c) 1987-1998 Carnegie Mellon University 738759Srvb * All Rights Reserved 838759Srvb * 938759Srvb * Permission to use, copy, modify and distribute this software and its 1038759Srvb * documentation is hereby granted, provided that both the copyright 1138759Srvb * notice and this permission notice appear in all copies of the 1238759Srvb * software, derivative works or modified versions, and any portions 1338759Srvb * thereof, and that both notices appear in supporting documentation, and 1438759Srvb * that credit is given to Carnegie Mellon University in all documents 1538759Srvb * and publicity pertaining to direct or indirect use of this code or its 1638759Srvb * derivatives. 1738759Srvb * 1838759Srvb * CODA IS AN EXPERIMENTAL SOFTWARE SYSTEM AND IS KNOWN TO HAVE BUGS, 1938759Srvb * SOME OF WHICH MAY HAVE SERIOUS CONSEQUENCES. CARNEGIE MELLON ALLOWS 2038759Srvb * FREE USE OF THIS SOFTWARE IN ITS "AS IS" CONDITION. CARNEGIE MELLON 2138759Srvb * DISCLAIMS ANY LIABILITY OF ANY KIND FOR ANY DAMAGES WHATSOEVER 2238759Srvb * RESULTING DIRECTLY OR INDIRECTLY FROM THE USE OF THIS SOFTWARE OR OF 2338759Srvb * ANY DERIVATIVE WORK. 2438759Srvb * 2538759Srvb * Carnegie Mellon encourages users of this software to return any 2638759Srvb * improvements or extensions that they make, and to grant Carnegie 2738759Srvb * Mellon the rights to redistribute these changes without encumbrance. 2838759Srvb * 2939085Srvb * @(#) src/sys/cfs/coda_vfsops.c,v 1.1.1.1 1998/08/29 21:14:52 rvb Exp $ 3050477Speter * $FreeBSD: head/sys/fs/coda/coda_vfsops.c 76166 2001-05-01 08:13:21Z markm $ 3138759Srvb * 3238759Srvb */ 3338625Srvb 3438625Srvb/* 3538625Srvb * Mach Operating System 3638625Srvb * Copyright (c) 1989 Carnegie-Mellon University 3738625Srvb * All rights reserved. The CMU software License Agreement specifies 3838625Srvb * the terms and conditions for use and redistribution. 3938625Srvb */ 4038625Srvb 4138625Srvb/* 4238625Srvb * This code was written for the Coda file system at Carnegie Mellon 4338625Srvb * University. Contributers include David Steere, James Kistler, and 4438625Srvb * M. Satyanarayanan. 4538625Srvb */ 4638625Srvb 4739085Srvb#include <vcoda.h> 4838625Srvb 4938625Srvb#include <sys/param.h> 5038625Srvb#include <sys/systm.h> 5176166Smarkm#include <sys/conf.h> 5238759Srvb#include <sys/kernel.h> 5376166Smarkm#include <sys/lock.h> 5438625Srvb#include <sys/malloc.h> 5576166Smarkm#include <sys/mount.h> 5638625Srvb#include <sys/namei.h> 5776166Smarkm#include <sys/proc.h> 5875877Smjacob#include <sys/socket.h> 5938625Srvb 6039126Srvb#include <coda/coda.h> 6139126Srvb#include <coda/cnode.h> 6239126Srvb#include <coda/coda_vfsops.h> 6339126Srvb#include <coda/coda_venus.h> 6439126Srvb#include <coda/coda_subr.h> 6539126Srvb#include <coda/coda_opstats.h> 6638759Srvb 6739085SrvbMALLOC_DEFINE(M_CODA, "CODA storage", "Various Coda Structures"); 6838625Srvb 6939085Srvbint codadebug = 0; 7039085Srvbint coda_vfsop_print_entry = 0; 7139085Srvb#define ENTRY if(coda_vfsop_print_entry) myprintf(("Entered %s\n",__FUNCTION__)) 7238625Srvb 7339085Srvbstruct vnode *coda_ctlvp; 7439085Srvbstruct coda_mntinfo coda_mnttbl[NVCODA]; /* indexed by minor device number */ 7538625Srvb 7638625Srvb/* structure to keep statistics of internally generated/satisfied calls */ 7738625Srvb 7839085Srvbstruct coda_op_stats coda_vfsopstats[CODA_VFSOPS_SIZE]; 7938625Srvb 8039085Srvb#define MARK_ENTRY(op) (coda_vfsopstats[op].entries++) 8139085Srvb#define MARK_INT_SAT(op) (coda_vfsopstats[op].sat_intrn++) 8239085Srvb#define MARK_INT_FAIL(op) (coda_vfsopstats[op].unsat_intrn++) 8339085Srvb#define MRAK_INT_GEN(op) (coda_vfsopstats[op].gen_intrn++) 8438625Srvb 8539085Srvbextern int coda_nc_initialized; /* Set if cache has been initialized */ 8638625Srvbextern int vc_nb_open __P((dev_t, int, int, struct proc *)); 8738625Srvb 8838625Srvbint 8939085Srvbcoda_vfsopstats_init(void) 9038625Srvb{ 9138625Srvb register int i; 9238625Srvb 9339085Srvb for (i=0;i<CODA_VFSOPS_SIZE;i++) { 9439085Srvb coda_vfsopstats[i].opcode = i; 9539085Srvb coda_vfsopstats[i].entries = 0; 9639085Srvb coda_vfsopstats[i].sat_intrn = 0; 9739085Srvb coda_vfsopstats[i].unsat_intrn = 0; 9839085Srvb coda_vfsopstats[i].gen_intrn = 0; 9938625Srvb } 10038625Srvb 10138625Srvb return 0; 10238625Srvb} 10338625Srvb 10438625Srvb/* 10538625Srvb * cfs mount vfsop 10638625Srvb * Set up mount info record and attach it to vfs struct. 10738625Srvb */ 10838625Srvb/*ARGSUSED*/ 10938625Srvbint 11039085Srvbcoda_mount(vfsp, path, data, ndp, p) 11138625Srvb struct mount *vfsp; /* Allocated and initialized by mount(2) */ 11238625Srvb char *path; /* path covered: ignored by the fs-layer */ 11338625Srvb caddr_t data; /* Need to define a data type for this in netbsd? */ 11438625Srvb struct nameidata *ndp; /* Clobber this to lookup the device name */ 11538625Srvb struct proc *p; /* The ever-famous proc pointer */ 11638625Srvb{ 11738625Srvb struct vnode *dvp; 11838625Srvb struct cnode *cp; 11938625Srvb dev_t dev; 12039085Srvb struct coda_mntinfo *mi; 12138625Srvb struct vnode *rootvp; 12238625Srvb ViceFid rootfid; 12338625Srvb ViceFid ctlfid; 12438625Srvb int error; 12538625Srvb 12638625Srvb ENTRY; 12738625Srvb 12839085Srvb coda_vfsopstats_init(); 12939085Srvb coda_vnodeopstats_init(); 13038625Srvb 13139085Srvb MARK_ENTRY(CODA_MOUNT_STATS); 13239085Srvb if (CODA_MOUNTED(vfsp)) { 13339085Srvb MARK_INT_FAIL(CODA_MOUNT_STATS); 13438625Srvb return(EBUSY); 13538625Srvb } 13638625Srvb 13738625Srvb /* Validate mount device. Similar to getmdev(). */ 13838625Srvb NDINIT(ndp, LOOKUP, FOLLOW, UIO_USERSPACE, data, p); 13938625Srvb error = namei(ndp); 14038625Srvb dvp = ndp->ni_vp; 14138625Srvb 14238625Srvb if (error) { 14339085Srvb MARK_INT_FAIL(CODA_MOUNT_STATS); 14438625Srvb return (error); 14538625Srvb } 14638625Srvb if (dvp->v_type != VCHR) { 14739085Srvb MARK_INT_FAIL(CODA_MOUNT_STATS); 14838625Srvb vrele(dvp); 14954655Seivind NDFREE(ndp, NDF_ONLY_PNBUF); 15038625Srvb return(ENXIO); 15138625Srvb } 15248926Sphk dev = dvp->v_rdev; 15338625Srvb vrele(dvp); 15454655Seivind NDFREE(ndp, NDF_ONLY_PNBUF); 15538625Srvb 15638625Srvb /* 15738625Srvb * See if the device table matches our expectations. 15838625Srvb */ 15946676Sphk if (devsw(dev)->d_open != vc_nb_open) 16038625Srvb { 16139085Srvb MARK_INT_FAIL(CODA_MOUNT_STATS); 16238625Srvb return(ENXIO); 16338625Srvb } 16438625Srvb 16539085Srvb if (minor(dev) >= NVCODA || minor(dev) < 0) { 16639085Srvb MARK_INT_FAIL(CODA_MOUNT_STATS); 16738625Srvb return(ENXIO); 16838625Srvb } 16938625Srvb 17038625Srvb /* 17138625Srvb * Initialize the mount record and link it to the vfs struct 17238625Srvb */ 17339085Srvb mi = &coda_mnttbl[minor(dev)]; 17438625Srvb 17538625Srvb if (!VC_OPEN(&mi->mi_vcomm)) { 17639085Srvb MARK_INT_FAIL(CODA_MOUNT_STATS); 17738625Srvb return(ENODEV); 17838625Srvb } 17938625Srvb 18038625Srvb /* No initialization (here) of mi_vcomm! */ 18138625Srvb vfsp->mnt_data = (qaddr_t)mi; 18238625Srvb vfs_getnewfsid (vfsp); 18338625Srvb 18438625Srvb mi->mi_vfsp = vfsp; 18538625Srvb 18638625Srvb /* 18738625Srvb * Make a root vnode to placate the Vnode interface, but don't 18839085Srvb * actually make the CODA_ROOT call to venus until the first call 18939085Srvb * to coda_root in case a server is down while venus is starting. 19038625Srvb */ 19138625Srvb rootfid.Volume = 0; 19238625Srvb rootfid.Vnode = 0; 19338625Srvb rootfid.Unique = 0; 19439085Srvb cp = make_coda_node(&rootfid, vfsp, VDIR); 19538625Srvb rootvp = CTOV(cp); 19638625Srvb rootvp->v_flag |= VROOT; 19738625Srvb 19838625Srvb ctlfid.Volume = CTL_VOL; 19938625Srvb ctlfid.Vnode = CTL_VNO; 20038625Srvb ctlfid.Unique = CTL_UNI; 20139085Srvb/* cp = make_coda_node(&ctlfid, vfsp, VCHR); 20238625Srvb The above code seems to cause a loop in the cnode links. 20338625Srvb I don't totally understand when it happens, it is caught 20438625Srvb when closing down the system. 20538625Srvb */ 20639085Srvb cp = make_coda_node(&ctlfid, 0, VCHR); 20738625Srvb 20839085Srvb coda_ctlvp = CTOV(cp); 20938625Srvb 21038625Srvb /* Add vfs and rootvp to chain of vfs hanging off mntinfo */ 21138625Srvb mi->mi_vfsp = vfsp; 21238625Srvb mi->mi_rootvp = rootvp; 21338625Srvb 21438625Srvb /* set filesystem block size */ 21538625Srvb vfsp->mnt_stat.f_bsize = 8192; /* XXX -JJK */ 21638759Srvb 21738625Srvb /* Set f_iosize. XXX -- inamura@isl.ntt.co.jp. 21838625Srvb For vnode_pager_haspage() references. The value should be obtained 21938625Srvb from underlying UFS. */ 22038625Srvb /* Checked UFS. iosize is set as 8192 */ 22138625Srvb vfsp->mnt_stat.f_iosize = 8192; 22238625Srvb 22338625Srvb /* error is currently guaranteed to be zero, but in case some 22438625Srvb code changes... */ 22539085Srvb CODADEBUG(1, 22639085Srvb myprintf(("coda_mount returned %d\n",error));); 22738625Srvb if (error) 22839085Srvb MARK_INT_FAIL(CODA_MOUNT_STATS); 22938625Srvb else 23039085Srvb MARK_INT_SAT(CODA_MOUNT_STATS); 23138625Srvb 23238625Srvb return(error); 23338625Srvb} 23438625Srvb 23538625Srvbint 23639085Srvbcoda_unmount(vfsp, mntflags, p) 23738625Srvb struct mount *vfsp; 23838625Srvb int mntflags; 23938625Srvb struct proc *p; 24038625Srvb{ 24139085Srvb struct coda_mntinfo *mi = vftomi(vfsp); 24238625Srvb int active, error = 0; 24338625Srvb 24438625Srvb ENTRY; 24539085Srvb MARK_ENTRY(CODA_UMOUNT_STATS); 24639085Srvb if (!CODA_MOUNTED(vfsp)) { 24739085Srvb MARK_INT_FAIL(CODA_UMOUNT_STATS); 24838625Srvb return(EINVAL); 24938625Srvb } 25038625Srvb 25138625Srvb if (mi->mi_vfsp == vfsp) { /* We found the victim */ 25238625Srvb if (!IS_UNMOUNTING(VTOC(mi->mi_rootvp))) 25338625Srvb return (EBUSY); /* Venus is still running */ 25438625Srvb 25538625Srvb#ifdef DEBUG 25639085Srvb printf("coda_unmount: ROOT: vp %p, cp %p\n", mi->mi_rootvp, VTOC(mi->mi_rootvp)); 25738625Srvb#endif 25838625Srvb vrele(mi->mi_rootvp); 25938625Srvb 26039085Srvb active = coda_kill(vfsp, NOT_DOWNCALL); 26141202Srvb mi->mi_rootvp->v_flag &= ~VROOT; 26238625Srvb error = vflush(mi->mi_vfsp, NULLVP, FORCECLOSE); 26339085Srvb printf("coda_unmount: active = %d, vflush active %d\n", active, error); 26438625Srvb error = 0; 26538625Srvb /* I'm going to take this out to allow lookups to go through. I'm 26638625Srvb * not sure it's important anyway. -- DCS 2/2/94 26738625Srvb */ 26838625Srvb /* vfsp->VFS_DATA = NULL; */ 26938625Srvb 27038625Srvb /* No more vfsp's to hold onto */ 27138625Srvb mi->mi_vfsp = NULL; 27238625Srvb mi->mi_rootvp = NULL; 27338625Srvb 27438625Srvb if (error) 27539085Srvb MARK_INT_FAIL(CODA_UMOUNT_STATS); 27638625Srvb else 27739085Srvb MARK_INT_SAT(CODA_UMOUNT_STATS); 27838625Srvb 27938625Srvb return(error); 28038625Srvb } 28138625Srvb return (EINVAL); 28238625Srvb} 28338625Srvb 28438625Srvb/* 28538625Srvb * find root of cfs 28638625Srvb */ 28738625Srvbint 28839085Srvbcoda_root(vfsp, vpp) 28938625Srvb struct mount *vfsp; 29038625Srvb struct vnode **vpp; 29138625Srvb{ 29239085Srvb struct coda_mntinfo *mi = vftomi(vfsp); 29338625Srvb struct vnode **result; 29438625Srvb int error; 29538625Srvb struct proc *p = curproc; /* XXX - bnoble */ 29638625Srvb ViceFid VFid; 29738625Srvb 29838625Srvb ENTRY; 29939085Srvb MARK_ENTRY(CODA_ROOT_STATS); 30038625Srvb result = NULL; 30138625Srvb 30238625Srvb if (vfsp == mi->mi_vfsp) { 30338625Srvb if ((VTOC(mi->mi_rootvp)->c_fid.Volume != 0) || 30438625Srvb (VTOC(mi->mi_rootvp)->c_fid.Vnode != 0) || 30538625Srvb (VTOC(mi->mi_rootvp)->c_fid.Unique != 0)) 30638625Srvb { /* Found valid root. */ 30738625Srvb *vpp = mi->mi_rootvp; 30838625Srvb /* On Mach, this is vref. On NetBSD, VOP_LOCK */ 30938759Srvb#if 1 31038625Srvb vref(*vpp); 31138759Srvb vn_lock(*vpp, LK_EXCLUSIVE, p); 31238759Srvb#else 31338759Srvb vget(*vpp, LK_EXCLUSIVE, p); 31438759Srvb#endif 31539085Srvb MARK_INT_SAT(CODA_ROOT_STATS); 31638625Srvb return(0); 31738625Srvb } 31838625Srvb } 31938625Srvb 32071699Sjhb error = venus_root(vftomi(vfsp), p->p_ucred, p, &VFid); 32138625Srvb 32238625Srvb if (!error) { 32338625Srvb /* 32438625Srvb * Save the new rootfid in the cnode, and rehash the cnode into the 32538625Srvb * cnode hash with the new fid key. 32638625Srvb */ 32739085Srvb coda_unsave(VTOC(mi->mi_rootvp)); 32838625Srvb VTOC(mi->mi_rootvp)->c_fid = VFid; 32939085Srvb coda_save(VTOC(mi->mi_rootvp)); 33038625Srvb 33138625Srvb *vpp = mi->mi_rootvp; 33238759Srvb#if 1 33338625Srvb vref(*vpp); 33438759Srvb vn_lock(*vpp, LK_EXCLUSIVE, p); 33538759Srvb#else 33638759Srvb vget(*vpp, LK_EXCLUSIVE, p); 33738759Srvb#endif 33838759Srvb 33939085Srvb MARK_INT_SAT(CODA_ROOT_STATS); 34038625Srvb goto exit; 34141202Srvb } else if (error == ENODEV || error == EINTR) { 34238625Srvb /* Gross hack here! */ 34338625Srvb /* 34439085Srvb * If Venus fails to respond to the CODA_ROOT call, coda_call returns 34538625Srvb * ENODEV. Return the uninitialized root vnode to allow vfs 34638625Srvb * operations such as unmount to continue. Without this hack, 34738625Srvb * there is no way to do an unmount if Venus dies before a 34839085Srvb * successful CODA_ROOT call is done. All vnode operations 34938625Srvb * will fail. 35038625Srvb */ 35138625Srvb *vpp = mi->mi_rootvp; 35238759Srvb#if 1 35338625Srvb vref(*vpp); 35438759Srvb vn_lock(*vpp, LK_EXCLUSIVE, p); 35538759Srvb#else 35638759Srvb vget(*vpp, LK_EXCLUSIVE, p); 35738759Srvb#endif 35838759Srvb 35939085Srvb MARK_INT_FAIL(CODA_ROOT_STATS); 36038625Srvb error = 0; 36138625Srvb goto exit; 36238625Srvb } else { 36339085Srvb CODADEBUG( CODA_ROOT, myprintf(("error %d in CODA_ROOT\n", error)); ); 36439085Srvb MARK_INT_FAIL(CODA_ROOT_STATS); 36538625Srvb 36638625Srvb goto exit; 36738625Srvb } 36838759Srvb 36938625Srvb exit: 37038625Srvb return(error); 37138625Srvb} 37238625Srvb 37338625Srvb/* 37438625Srvb * Get file system statistics. 37538625Srvb */ 37638625Srvbint 37739085Srvbcoda_nb_statfs(vfsp, sbp, p) 37838625Srvb register struct mount *vfsp; 37938625Srvb struct statfs *sbp; 38038625Srvb struct proc *p; 38138625Srvb{ 38238625Srvb ENTRY; 38339085Srvb/* MARK_ENTRY(CODA_STATFS_STATS); */ 38439085Srvb if (!CODA_MOUNTED(vfsp)) { 38539085Srvb/* MARK_INT_FAIL(CODA_STATFS_STATS);*/ 38638625Srvb return(EINVAL); 38738625Srvb } 38838625Srvb 38938625Srvb bzero(sbp, sizeof(struct statfs)); 39038625Srvb /* XXX - what to do about f_flags, others? --bnoble */ 39138625Srvb /* Below This is what AFS does 39238625Srvb #define NB_SFS_SIZ 0x895440 39338625Srvb */ 39438625Srvb /* Note: Normal fs's have a bsize of 0x400 == 1024 */ 39538909Sbde sbp->f_type = vfsp->mnt_vfc->vfc_typenum; 39638625Srvb sbp->f_bsize = 8192; /* XXX */ 39738625Srvb sbp->f_iosize = 8192; /* XXX */ 39838625Srvb#define NB_SFS_SIZ 0x8AB75D 39938625Srvb sbp->f_blocks = NB_SFS_SIZ; 40038625Srvb sbp->f_bfree = NB_SFS_SIZ; 40138625Srvb sbp->f_bavail = NB_SFS_SIZ; 40238625Srvb sbp->f_files = NB_SFS_SIZ; 40338625Srvb sbp->f_ffree = NB_SFS_SIZ; 40438625Srvb bcopy((caddr_t)&(vfsp->mnt_stat.f_fsid), (caddr_t)&(sbp->f_fsid), sizeof (fsid_t)); 40541514Sarchie snprintf(sbp->f_mntonname, sizeof(sbp->f_mntonname), "/coda"); 40641514Sarchie snprintf(sbp->f_mntfromname, sizeof(sbp->f_mntfromname), "CODA"); 40739085Srvb/* MARK_INT_SAT(CODA_STATFS_STATS); */ 40838625Srvb return(0); 40938625Srvb} 41038625Srvb 41138625Srvb/* 41238625Srvb * Flush any pending I/O. 41338625Srvb */ 41438625Srvbint 41539085Srvbcoda_sync(vfsp, waitfor, cred, p) 41638625Srvb struct mount *vfsp; 41738625Srvb int waitfor; 41838625Srvb struct ucred *cred; 41938625Srvb struct proc *p; 42038625Srvb{ 42138625Srvb ENTRY; 42239085Srvb MARK_ENTRY(CODA_SYNC_STATS); 42339085Srvb MARK_INT_SAT(CODA_SYNC_STATS); 42438625Srvb return(0); 42538625Srvb} 42638625Srvb 42738625Srvb/* 42838625Srvb * fhtovp is now what vget used to be in 4.3-derived systems. For 42938625Srvb * some silly reason, vget is now keyed by a 32 bit ino_t, rather than 43038625Srvb * a type-specific fid. 43138625Srvb */ 43238625Srvbint 43339085Srvbcoda_fhtovp(vfsp, fhp, nam, vpp, exflagsp, creadanonp) 43438625Srvb register struct mount *vfsp; 43538625Srvb struct fid *fhp; 43638625Srvb struct mbuf *nam; 43738625Srvb struct vnode **vpp; 43838625Srvb int *exflagsp; 43938625Srvb struct ucred **creadanonp; 44038625Srvb{ 44138625Srvb struct cfid *cfid = (struct cfid *)fhp; 44238625Srvb struct cnode *cp = 0; 44338625Srvb int error; 44438625Srvb struct proc *p = curproc; /* XXX -mach */ 44538625Srvb ViceFid VFid; 44638625Srvb int vtype; 44738625Srvb 44838625Srvb ENTRY; 44938625Srvb 45039085Srvb MARK_ENTRY(CODA_VGET_STATS); 45138625Srvb /* Check for vget of control object. */ 45238625Srvb if (IS_CTL_FID(&cfid->cfid_fid)) { 45339085Srvb *vpp = coda_ctlvp; 45439085Srvb vref(coda_ctlvp); 45539085Srvb MARK_INT_SAT(CODA_VGET_STATS); 45638625Srvb return(0); 45738625Srvb } 45838625Srvb 45971699Sjhb error = venus_fhtovp(vftomi(vfsp), &cfid->cfid_fid, p->p_ucred, p, &VFid, &vtype); 46038625Srvb 46138625Srvb if (error) { 46239085Srvb CODADEBUG(CODA_VGET, myprintf(("vget error %d\n",error));) 46338625Srvb *vpp = (struct vnode *)0; 46438625Srvb } else { 46539085Srvb CODADEBUG(CODA_VGET, 46638625Srvb myprintf(("vget: vol %lx vno %lx uni %lx type %d result %d\n", 46738625Srvb VFid.Volume, VFid.Vnode, VFid.Unique, vtype, error)); ) 46838625Srvb 46939085Srvb cp = make_coda_node(&VFid, vfsp, vtype); 47038625Srvb *vpp = CTOV(cp); 47138625Srvb } 47238625Srvb return(error); 47338625Srvb} 47438625Srvb 47538625Srvb/* 47638625Srvb * To allow for greater ease of use, some vnodes may be orphaned when 47738625Srvb * Venus dies. Certain operations should still be allowed to go 47838625Srvb * through, but without propagating ophan-ness. So this function will 47938625Srvb * get a new vnode for the file from the current run of Venus. */ 48038625Srvb 48138625Srvbint 48238625SrvbgetNewVnode(vpp) 48338625Srvb struct vnode **vpp; 48438625Srvb{ 48538625Srvb struct cfid cfid; 48639085Srvb struct coda_mntinfo *mi = vftomi((*vpp)->v_mount); 48738625Srvb 48838625Srvb ENTRY; 48938625Srvb 49038625Srvb cfid.cfid_len = (short)sizeof(ViceFid); 49138625Srvb cfid.cfid_fid = VTOC(*vpp)->c_fid; /* Structure assignment. */ 49238625Srvb /* XXX ? */ 49338625Srvb 49438625Srvb /* We're guessing that if set, the 1st element on the list is a 49538625Srvb * valid vnode to use. If not, return ENODEV as venus is dead. 49638625Srvb */ 49738625Srvb if (mi->mi_vfsp == NULL) 49838625Srvb return ENODEV; 49938625Srvb 50039085Srvb return coda_fhtovp(mi->mi_vfsp, (struct fid*)&cfid, NULL, vpp, 50138625Srvb NULL, NULL); 50238625Srvb} 50338625Srvb 50459241Srwatson#include <ufs/ufs/extattr.h> 50538625Srvb#include <ufs/ufs/quota.h> 50638625Srvb#include <ufs/ufs/ufsmount.h> 50738625Srvb/* get the mount structure corresponding to a given device. Assume 50838625Srvb * device corresponds to a UFS. Return NULL if no device is found. 50938625Srvb */ 51038625Srvbstruct mount *devtomp(dev) 51138625Srvb dev_t dev; 51238625Srvb{ 51353452Sphk struct mount *mp; 51453452Sphk 51553452Sphk TAILQ_FOREACH(mp, &mountlist, mnt_list) { 51646795Sphk if (((VFSTOUFS(mp))->um_dev == dev)) { 51738625Srvb /* mount corresponds to UFS and the device matches one we want */ 51838625Srvb return(mp); 51938625Srvb } 52038625Srvb } 52138625Srvb /* mount structure wasn't found */ 52238625Srvb return(NULL); 52338625Srvb} 52439650Srvb 52539650Srvbstruct vfsops coda_vfsops = { 52639650Srvb coda_mount, 52751068Salfred vfs_stdstart, 52839650Srvb coda_unmount, 52939650Srvb coda_root, 53051068Salfred vfs_stdquotactl, 53139650Srvb coda_nb_statfs, 53239650Srvb coda_sync, 53351068Salfred vfs_stdvget, 53451068Salfred vfs_stdfhtovp, 53551138Salfred vfs_stdcheckexp, 53651068Salfred vfs_stdvptofh, 53754803Srwatson vfs_stdinit, 53854803Srwatson vfs_stduninit, 53954803Srwatson vfs_stdextattrctl, 54039650Srvb}; 54139650Srvb 54239650SrvbVFS_SET(coda_vfsops, coda, VFCF_NETWORK); 543