/* $Id: msdosfs_vfsops.c,v 1.20 1997/08/16 19:15:24 wollman Exp $ */ /* $NetBSD: msdosfs_vfsops.c,v 1.19 1994/08/21 18:44:10 ws Exp $ */ /*- * Copyright (C) 1994 Wolfgang Solfrank. * Copyright (C) 1994 TooLs GmbH. * All rights reserved. * Original code by Paul Popelka (paulp@uts.amdahl.com) (see below). * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by TooLs GmbH. * 4. The name of TooLs GmbH may not be used to endorse or promote products * derived from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ /* * Written by Paul Popelka (paulp@uts.amdahl.com) * * You can do anything you want with this software, just don't say you wrote * it, and don't remove this notice. * * This software is provided "as is". * * The author supplies this software to be publicly redistributed on the * understanding that the author is not responsible for the correct * functioning of this software in any circumstances and is not liable for * any damages caused by this software. * * October 1992 */ #include #include #include #include #include #include #include /* XXX */ /* defines v_rdev */ #include #include #include #include #include #include #include #include #include #include MALLOC_DEFINE(M_MSDOSFSFAT, "MSDOSFS FAT", "MSDOSFS file allocation table"); static int mountmsdosfs __P((struct vnode *devvp, struct mount *mp, struct proc *p)); static int msdosfs_fhtovp __P((struct mount *, struct fid *, struct sockaddr *, struct vnode **, int *, struct ucred **)); static int msdosfs_mount __P((struct mount *, char *, caddr_t, struct nameidata *, struct proc *)); static int msdosfs_quotactl __P((struct mount *, int, uid_t, caddr_t, struct proc *)); static int msdosfs_root __P((struct mount *, struct vnode **)); static int msdosfs_start __P((struct mount *, int, struct proc *)); static int msdosfs_statfs __P((struct mount *, struct statfs *, struct proc *)); static int msdosfs_sync __P((struct mount *, int, struct ucred *, struct proc *)); static int msdosfs_unmount __P((struct mount *, int, struct proc *)); static int msdosfs_vget __P((struct mount *mp, ino_t ino, struct vnode **vpp)); static int msdosfs_vptofh __P((struct vnode *, struct fid *)); /* * mp - path - addr in user space of mount point (ie /usr or whatever) * data - addr in user space of mount params including the name of the block * special file to treat as a filesystem. */ static int msdosfs_mount(mp, path, data, ndp, p) struct mount *mp; char *path; caddr_t data; struct nameidata *ndp; struct proc *p; { struct vnode *devvp; /* vnode for blk device to mount */ struct msdosfs_args args; /* will hold data from mount request */ struct msdosfsmount *pmp; /* msdosfs specific mount control block */ int error, flags; u_int size; struct ucred *cred, *scred; struct vattr va; /* * Copy in the args for the mount request. */ error = copyin(data, (caddr_t) & args, sizeof(struct msdosfs_args)); if (error) return error; /* * If they just want to update then be sure we can do what is * asked. Can't change a filesystem from read/write to read only. * Why? And if they've supplied a new device file name then we * continue, otherwise return. */ if (mp->mnt_flag & MNT_UPDATE) { pmp = (struct msdosfsmount *) mp->mnt_data; error = 0; if (pmp->pm_ronly == 0 && (mp->mnt_flag & MNT_RDONLY)) { flags = WRITECLOSE; if (mp->mnt_flag & MNT_FORCE) flags |= FORCECLOSE; error = vflush(mp, NULLVP, flags); } if (!error && (mp->mnt_flag & MNT_RELOAD)) /* not yet implemented */ error = EINVAL; if (error) return error; if (pmp->pm_ronly && (mp->mnt_flag & MNT_WANTRDWR)) pmp->pm_ronly = 0; if (args.fspec == 0) { /* * Process export requests. */ return vfs_export(mp, &pmp->pm_export, &args.export); } } else pmp = NULL; /* * check to see that the user in owns the target directory. * Note the very XXX trick to make sure we're checking as the * real user -- were mount() executable by anyone, this wouldn't * be a problem. * * XXX there should be one consistent error out. */ cred = crdup(p->p_ucred); /* XXX */ cred->cr_uid = p->p_cred->p_ruid; /* XXX */ error = VOP_GETATTR(mp->mnt_vnodecovered, &va, cred, p); if (error) { crfree(cred); /* XXX */ return error; } if (cred->cr_uid != 0) { if (va.va_uid != cred->cr_uid) { error = EACCES; crfree(cred); /* XXX */ return error; } /* a user mounted it; we'll verify permissions when unmounting */ mp->mnt_flag |= MNT_USER; } /* * Now, lookup the name of the block device this mount or name * update request is to apply to. */ NDINIT(ndp, LOOKUP, FOLLOW, UIO_USERSPACE, args.fspec, p); scred = p->p_ucred; /* XXX */ p->p_ucred = cred; /* XXX */ error = namei(ndp); p->p_ucred = scred; /* XXX */ crfree(cred); /* XXX */ if (error != 0) return error; /* * Be sure they've given us a block device to treat as a * filesystem. And, that its major number is within the bdevsw * table. */ devvp = ndp->ni_vp; if (devvp->v_type != VBLK) { vrele(devvp); return ENOTBLK; } if (major(devvp->v_rdev) >= nblkdev) { vrele(devvp); return ENXIO; } /* * If this is an update, then make sure the vnode for the block * special device is the same as the one our filesystem is in. */ if (mp->mnt_flag & MNT_UPDATE) { if (devvp != pmp->pm_devvp) error = EINVAL; else vrele(devvp); } else { /* * Well, it's not an update, it's a real mount request. * Time to get dirty. */ error = mountmsdosfs(devvp, mp, p); } if (error) { vrele(devvp); return error; } /* * Copy in the name of the directory the filesystem is to be * mounted on. Then copy in the name of the block special file * representing the filesystem being mounted. And we clear the * remainder of the character strings to be tidy. Set up the * user id/group id/mask as specified by the user. Then, we try to * fill in the filesystem stats structure as best we can with * whatever applies from a dos file system. */ pmp = (struct msdosfsmount *) mp->mnt_data; copyinstr(path, (caddr_t) mp->mnt_stat.f_mntonname, sizeof(mp->mnt_stat.f_mntonname) - 1, &size); bzero(mp->mnt_stat.f_mntonname + size, sizeof(mp->mnt_stat.f_mntonname) - size); copyinstr(args.fspec, mp->mnt_stat.f_mntfromname, MNAMELEN - 1, &size); bzero(mp->mnt_stat.f_mntfromname + size, MNAMELEN - size); pmp->pm_mounter = p->p_cred->p_ruid; pmp->pm_gid = args.gid; pmp->pm_uid = args.uid; pmp->pm_mask = args.mask; (void) msdosfs_statfs(mp, &mp->mnt_stat, p); #ifdef MSDOSFS_DEBUG printf("msdosfs_mount(): mp %p, pmp %p, inusemap %p\n", mp, pmp, pmp->pm_inusemap); #endif return 0; } static int mountmsdosfs(devvp, mp, p) struct vnode *devvp; struct mount *mp; struct proc *p; { int i; int bpc; int bit; int error; int needclose; int ronly = (mp->mnt_flag & MNT_RDONLY) != 0; dev_t dev = devvp->v_rdev; union bootsector *bsp; struct msdosfsmount *pmp = NULL; struct buf *bp0 = NULL; struct byte_bpb33 *b33; struct byte_bpb50 *b50; #ifdef PC98 u_int pc98_wrk; u_int Phy_Sector_Size; #endif /* * Multiple mounts of the same block special file aren't allowed. * Make sure no one else has the special file open. And flush any * old buffers from this filesystem. Presumably this prevents us * from running into buffers that are the wrong blocksize. */ error = vfs_mountedon(devvp); if (error) return error; if (vcount(devvp) > 1) return EBUSY; error = vinvalbuf(devvp, V_SAVE, p->p_ucred, p, 0, 0); if (error) return error; /* * Now open the block special file. */ error = VOP_OPEN(devvp, ronly ? FREAD : FREAD | FWRITE, FSCRED, p); if (error) return error; needclose = 1; #ifdef HDSUPPORT /* * Put this in when we support reading dos filesystems from * partitioned harddisks. */ if (VOP_IOCTL(devvp, DIOCGPART, &msdosfspart, FREAD, NOCRED, p) == 0) { } #endif /* * Read the boot sector of the filesystem, and then check the boot * signature. If not a dos boot sector then error out. We could * also add some checking on the bsOemName field. So far I've seen * the following values: "IBM 3.3" "MSDOS3.3" "MSDOS5.0" */ #ifdef PC98 devvp->v_flag &= 0xffff; error = bread(devvp, 0, 1024, NOCRED, &bp0); #else error = bread(devvp, 0, 512, NOCRED, &bp0); #endif if (error) goto error_exit; bp0->b_flags |= B_AGE; bsp = (union bootsector *) bp0->b_data; b33 = (struct byte_bpb33 *) bsp->bs33.bsBPB; b50 = (struct byte_bpb50 *) bsp->bs50.bsBPB; #ifdef MSDOSFS_CHECKSIG #ifdef PC98 if (bsp->bs50.bsBootSectSig != BOOTSIG && bsp->bs50.bsBootSectSig != 0 && /* PC98 DOS 3.3x */ bsp->bs50.bsBootSectSig != 15760 && /* PC98 DOS 5.0 */ bsp->bs50.bsBootSectSig != 64070) { /* PC98 DOS 3.3B */ #else if (bsp->bs50.bsBootSectSig != BOOTSIG) { #endif error = EINVAL; goto error_exit; } #endif if ( bsp->bs50.bsJump[0] != 0xe9 && (bsp->bs50.bsJump[0] != 0xeb || bsp->bs50.bsJump[2] != 0x90)) { error = EINVAL; goto error_exit; } pmp = malloc(sizeof *pmp, M_MSDOSFSMNT, M_WAITOK); bzero((caddr_t)pmp, sizeof *pmp); pmp->pm_mountp = mp; /* * Compute several useful quantities from the bpb in the * bootsector. Copy in the dos 5 variant of the bpb then fix up * the fields that are different between dos 5 and dos 3.3. */ pmp->pm_BytesPerSec = getushort(b50->bpbBytesPerSec); pmp->pm_SectPerClust = b50->bpbSecPerClust; pmp->pm_ResSectors = getushort(b50->bpbResSectors); pmp->pm_FATs = b50->bpbFATs; pmp->pm_RootDirEnts = getushort(b50->bpbRootDirEnts); pmp->pm_Sectors = getushort(b50->bpbSectors); pmp->pm_Media = b50->bpbMedia; pmp->pm_FATsecs = getushort(b50->bpbFATsecs); pmp->pm_SecPerTrack = getushort(b50->bpbSecPerTrack); pmp->pm_Heads = getushort(b50->bpbHeads); /* XXX - We should probably check more values here */ if (!pmp->pm_BytesPerSec || !pmp->pm_SectPerClust || !pmp->pm_Heads || pmp->pm_Heads > 255 || #ifdef PC98 !pmp->pm_SecPerTrack || pmp->pm_SecPerTrack > 255) { #else !pmp->pm_SecPerTrack || pmp->pm_SecPerTrack > 63) { #endif error = EINVAL; goto error_exit; } if (pmp->pm_Sectors == 0) { pmp->pm_HiddenSects = getulong(b50->bpbHiddenSecs); pmp->pm_HugeSectors = getulong(b50->bpbHugeSectors); } else { pmp->pm_HiddenSects = getushort(b33->bpbHiddenSecs); pmp->pm_HugeSectors = pmp->pm_Sectors; } #ifdef PC98 /* for PC98 added Satoshi Yasuda */ Phy_Sector_Size = 512; if ((devvp->v_rdev>>8) == 2) { /* floppy check */ if (((devvp->v_rdev&077) == 2) && (pmp->pm_HugeSectors == 1232)) { Phy_Sector_Size = 1024; /* 2HD */ /* * 1024byte/sector support */ devvp->v_flag |= 0x10000; } else { if ((((devvp->v_rdev&077) == 3) /* 2DD 8 or 9 sector */ && (pmp->pm_HugeSectors == 1440)) /* 9 sector */ || (((devvp->v_rdev&077) == 4) && (pmp->pm_HugeSectors == 1280)) /* 8 sector */ || (((devvp->v_rdev&077) == 5) && (pmp->pm_HugeSectors == 2880))) { /* 1.44M */ Phy_Sector_Size = 512; } else { if (((devvp->v_rdev&077) != 1) && ((devvp->v_rdev&077) != 0)) { /* 2HC */ error = EINVAL; goto error_exit; } } } } pc98_wrk = pmp->pm_BytesPerSec / Phy_Sector_Size; pmp->pm_BytesPerSec = Phy_Sector_Size; pmp->pm_SectPerClust = pmp->pm_SectPerClust * pc98_wrk; pmp->pm_HugeSectors = pmp->pm_HugeSectors * pc98_wrk; pmp->pm_ResSectors = pmp->pm_ResSectors * pc98_wrk; pmp->pm_FATsecs = pmp->pm_FATsecs * pc98_wrk; pmp->pm_SecPerTrack = pmp->pm_SecPerTrack * pc98_wrk; pmp->pm_HiddenSects = pmp->pm_HiddenSects * pc98_wrk; #endif /* */ pmp->pm_fatblk = pmp->pm_ResSectors; pmp->pm_rootdirblk = pmp->pm_fatblk + (pmp->pm_FATs * pmp->pm_FATsecs); pmp->pm_rootdirsize = (pmp->pm_RootDirEnts * sizeof(struct direntry)) / pmp->pm_BytesPerSec;/* in sectors */ pmp->pm_firstcluster = pmp->pm_rootdirblk + pmp->pm_rootdirsize; pmp->pm_nmbrofclusters = (pmp->pm_HugeSectors - pmp->pm_firstcluster) / pmp->pm_SectPerClust; pmp->pm_maxcluster = pmp->pm_nmbrofclusters + 1; pmp->pm_fatsize = pmp->pm_FATsecs * pmp->pm_BytesPerSec; if (FAT12(pmp)) /* * This will usually be a floppy disk. This size makes sure * that one fat entry will not be split across multiple * blocks. */ pmp->pm_fatblocksize = 3 * pmp->pm_BytesPerSec; else /* * This will usually be a hard disk. Reading or writing one * block should be quite fast. */ pmp->pm_fatblocksize = MAXBSIZE; pmp->pm_fatblocksec = pmp->pm_fatblocksize / pmp->pm_BytesPerSec; if ((pmp->pm_rootdirsize % pmp->pm_SectPerClust) != 0) printf("mountmsdosfs(): Warning: root directory is not a multiple of the clustersize in length\n"); /* * Compute mask and shift value for isolating cluster relative byte * offsets and cluster numbers from a file offset. */ bpc = pmp->pm_SectPerClust * pmp->pm_BytesPerSec; pmp->pm_bpcluster = bpc; pmp->pm_depclust = bpc / sizeof(struct direntry); pmp->pm_crbomask = bpc - 1; if (bpc == 0) { error = EINVAL; goto error_exit; } bit = 1; for (i = 0; i < 32; i++) { if (bit & bpc) { if (bit ^ bpc) { error = EINVAL; goto error_exit; } pmp->pm_cnshift = i; break; } bit <<= 1; } #ifdef PC98 if (Phy_Sector_Size == 512) { pmp->pm_brbomask = 0x01ff; /* 512 byte blocks only (so far) */ pmp->pm_bnshift = 9; /* shift right 9 bits to get bn */ } else { pmp->pm_brbomask = 0x03ff; pmp->pm_bnshift = 10; } #else pmp->pm_brbomask = 0x01ff; /* 512 byte blocks only (so far) */ pmp->pm_bnshift = 9; /* shift right 9 bits to get bn */ #endif /* * Release the bootsector buffer. */ brelse(bp0); bp0 = NULL; /* * Allocate memory for the bitmap of allocated clusters, and then * fill it in. */ pmp->pm_inusemap = malloc(((pmp->pm_maxcluster + N_INUSEBITS - 1) / N_INUSEBITS) * sizeof(*pmp->pm_inusemap), M_MSDOSFSFAT, M_WAITOK); /* * fillinusemap() needs pm_devvp. */ pmp->pm_dev = dev; pmp->pm_devvp = devvp; /* * Have the inuse map filled in. */ error = fillinusemap(pmp); if (error) goto error_exit; /* * If they want fat updates to be synchronous then let them suffer * the performance degradation in exchange for the on disk copy of * the fat being correct just about all the time. I suppose this * would be a good thing to turn on if the kernel is still flakey. */ pmp->pm_waitonfat = mp->mnt_flag & MNT_SYNCHRONOUS; /* * Finish up. */ pmp->pm_ronly = ronly; if (ronly == 0) pmp->pm_fmod = 1; mp->mnt_data = (qaddr_t) pmp; mp->mnt_stat.f_fsid.val[0] = (long)dev; mp->mnt_stat.f_fsid.val[1] = mp->mnt_vfc->vfc_typenum; mp->mnt_flag |= MNT_LOCAL; devvp->v_specflags |= SI_MOUNTEDON; return 0; error_exit:; if (bp0) brelse(bp0); if (needclose) (void) VOP_CLOSE(devvp, ronly ? FREAD : FREAD | FWRITE, NOCRED, p); if (pmp) { if (pmp->pm_inusemap) free((caddr_t) pmp->pm_inusemap, M_MSDOSFSFAT); free((caddr_t) pmp, M_MSDOSFSMNT); mp->mnt_data = (qaddr_t) 0; } return error; } static int msdosfs_start(mp, flags, p) struct mount *mp; int flags; struct proc *p; { return 0; } /* * Unmount the filesystem described by mp. */ static int msdosfs_unmount(mp, mntflags, p) struct mount *mp; int mntflags; struct proc *p; { int flags = 0; int error; struct msdosfsmount *pmp = (struct msdosfsmount *) mp->mnt_data; /* only the mounter, or superuser can unmount */ if ((p->p_cred->p_ruid != pmp->pm_mounter) && (error = suser(p->p_ucred, &p->p_acflag))) return error; if (mntflags & MNT_FORCE) { flags |= FORCECLOSE; } error = vflush(mp, NULLVP, flags); if (error) return error; pmp->pm_devvp->v_specflags &= ~SI_MOUNTEDON; error = VOP_CLOSE(pmp->pm_devvp, pmp->pm_ronly ? FREAD : FREAD | FWRITE, NOCRED, p); vrele(pmp->pm_devvp); free((caddr_t) pmp->pm_inusemap, M_MSDOSFSFAT); free((caddr_t) pmp, M_MSDOSFSMNT); mp->mnt_data = (qaddr_t) 0; mp->mnt_flag &= ~MNT_LOCAL; return error; } static int msdosfs_root(mp, vpp) struct mount *mp; struct vnode **vpp; { struct denode *ndep; struct msdosfsmount *pmp = (struct msdosfsmount *) (mp->mnt_data); int error; error = deget(pmp, MSDOSFSROOT, MSDOSFSROOT_OFS, NULL, &ndep); #ifdef MSDOSFS_DEBUG printf("msdosfs_root(); mp %p, pmp %p, ndep %p, vp %p\n", mp, pmp, ndep, DETOV(ndep)); #endif if (error == 0) *vpp = DETOV(ndep); return error; } static int msdosfs_quotactl(mp, cmds, uid, arg, p) struct mount *mp; int cmds; uid_t uid; caddr_t arg; struct proc *p; { return EOPNOTSUPP; } static int msdosfs_statfs(mp, sbp, p) struct mount *mp; struct statfs *sbp; struct proc *p; { struct msdosfsmount *pmp = (struct msdosfsmount *) mp->mnt_data; /* * Fill in the stat block. */ sbp->f_bsize = pmp->pm_bpcluster; sbp->f_iosize = pmp->pm_bpcluster; sbp->f_blocks = pmp->pm_nmbrofclusters; sbp->f_bfree = pmp->pm_freeclustercount; sbp->f_bavail = pmp->pm_freeclustercount; sbp->f_files = pmp->pm_RootDirEnts; /* XXX */ sbp->f_ffree = 0; /* what to put in here? */ /* * Copy the mounted on and mounted from names into the passed in * stat block, if it is not the one in the mount structure. */ if (sbp != &mp->mnt_stat) { sbp->f_type = mp->mnt_vfc->vfc_typenum; bcopy((caddr_t) mp->mnt_stat.f_mntonname, (caddr_t) & sbp->f_mntonname[0], MNAMELEN); bcopy((caddr_t) mp->mnt_stat.f_mntfromname, (caddr_t) & sbp->f_mntfromname[0], MNAMELEN); } #if 0 strncpy(&sbp->f_fstypename[0], mp->mnt_op->vfs_name, MFSNAMELEN); sbp->f_fstypename[MFSNAMELEN] = '\0'; #endif return 0; } static int msdosfs_sync(mp, waitfor, cred, p) struct mount *mp; int waitfor; struct ucred *cred; struct proc *p; { struct vnode *vp; struct denode *dep; struct msdosfsmount *pmp; int error; int allerror = 0; pmp = (struct msdosfsmount *) mp->mnt_data; /* * If we ever switch to not updating all of the fats all the time, * this would be the place to update them from the first one. */ if (pmp->pm_fmod) if (pmp->pm_ronly) panic("msdosfs_sync: rofs mod"); else { /* update fats here */ } /* * Go thru in memory denodes and write them out along with * unwritten file blocks. */ simple_lock(&mntvnode_slock); loop: for (vp = mp->mnt_vnodelist.lh_first; vp; vp = vp->v_mntvnodes.le_next) { if (vp->v_mount != mp) /* not ours anymore */ goto loop; simple_lock(&vp->v_interlock); dep = VTODE(vp); if ((dep->de_flag & (DE_MODIFIED | DE_UPDATE)) == 0 && vp->v_dirtyblkhd.lh_first == NULL) { simple_unlock(&vp->v_interlock); continue; } simple_unlock(&mntvnode_slock); error = vget(vp, LK_EXCLUSIVE | LK_NOWAIT | LK_INTERLOCK, p); if (error) { simple_lock(&mntvnode_slock); if (error == ENOENT) goto loop; continue; } error = VOP_FSYNC(vp, cred, waitfor, p); if (error) allerror = error; VOP_UNLOCK(vp, 0, p); vrele(vp); /* done with this one */ simple_lock(&mntvnode_slock); } simple_unlock(&mntvnode_slock); /* * Flush filesystem control info. */ error = VOP_FSYNC(pmp->pm_devvp, cred, waitfor, p); if (error) allerror = error; return allerror; } static int msdosfs_fhtovp(mp, fhp, nam, vpp, exflagsp, credanonp) struct mount *mp; struct fid *fhp; struct sockaddr *nam; struct vnode **vpp; int *exflagsp; struct ucred **credanonp; { struct msdosfsmount *pmp = (struct msdosfsmount *) mp->mnt_data; struct defid *defhp = (struct defid *) fhp; struct denode *dep; struct netcred *np; int error; np = vfs_export_lookup(mp, &pmp->pm_export, nam); if (np == NULL) return EACCES; error = deget(pmp, defhp->defid_dirclust, defhp->defid_dirofs, NULL, &dep); if (error) { *vpp = NULLVP; return error; } *vpp = DETOV(dep); *exflagsp = np->netc_exflags; *credanonp = &np->netc_anon; return 0; } static int msdosfs_vptofh(vp, fhp) struct vnode *vp; struct fid *fhp; { struct denode *dep = VTODE(vp); struct defid *defhp = (struct defid *) fhp; defhp->defid_len = sizeof(struct defid); defhp->defid_dirclust = dep->de_dirclust; defhp->defid_dirofs = dep->de_diroffset; /* defhp->defid_gen = ip->i_gen; */ return 0; } static int msdosfs_vget(mp, ino, vpp) struct mount *mp; ino_t ino; struct vnode **vpp; { return EOPNOTSUPP; } static struct vfsops msdosfs_vfsops = { msdosfs_mount, msdosfs_start, msdosfs_unmount, msdosfs_root, msdosfs_quotactl, msdosfs_statfs, msdosfs_sync, msdosfs_vget, msdosfs_fhtovp, msdosfs_vptofh, msdosfs_init }; VFS_SET(msdosfs_vfsops, msdos, MOUNT_MSDOS, 0);