/* * Portions Copyright (c) 2003 Apple Computer, Inc. All rights reserved. */ #include #include #include /* Standard vendor system headers */ #include /* Afs-based standard headers */ #include /* statistics */ #include #include #include #ifndef AFS_DARWIN80_ENV #include #endif #include #include "../afs/sysctl.h" #ifndef M_UFSMNT #define M_UFSMNT M_TEMP /* DARWIN80 MALLOC doesn't look at the type anyway */ #endif struct vcache *afs_globalVp = 0; struct mount *afs_globalVFS = 0; int afs_vfs_typenum; int afs_quotactl() { return ENOTSUP; } int afs_fhtovp(struct mount *mp, struct fid *fhp, struct vnode **vpp) { return (EINVAL); } int afs_vptofh(struct vnode *vp, struct fid *fhp) { return (EINVAL); } #ifdef AFS_DARWIN80_ENV #define CTX_TYPE vfs_context_t #define CTX_PROC_CONVERT(C) vfs_context_proc((C)) #define STATFS_TYPE struct vfsstatfs #else #define CTX_TYPE struct proc * #define CTX_PROC_CONVERT(C) (C) #define STATFS_TYPE struct statfs #define vfs_statfs(VFS) &(VFS)->mnt_stat #endif #define PROC_DECL(out,in) struct proc *out = CTX_PROC_CONVERT(in) int afs_start(struct mount *mp, int flags, CTX_TYPE p) { return (0); /* nothing to do. ? */ } int afs_statfs(struct mount *mp, STATFS_TYPE *abp, CTX_TYPE ctx); #ifdef AFS_DARWIN80_ENV int afs_mount(struct mount *mp, vnode_t *devvp, user_addr_t data, vfs_context_t ctx) #else int afs_mount(struct mount *mp, char *path, caddr_t data, struct nameidata *ndp, CTX_TYPE ctx) #endif { /* ndp contains the mounted-from device. Just ignore it. * we also don't care about our proc struct. */ size_t size; int error; #ifdef AFS_DARWIN80_ENV struct vfsioattr ioattr; /* vfs_statfs advertised as RO, but isn't */ /* new api will be needed to initialize this information (nfs needs to set mntfromname too) */ #endif STATFS_TYPE *mnt_stat = vfs_statfs(mp); if (vfs_isupdate(mp)) return EINVAL; AFS_GLOCK(); AFS_STATCNT(afs_mount); if (data == 0 && afs_globalVFS) { /* Don't allow remounts. */ AFS_GUNLOCK(); return (EBUSY); } afs_globalVFS = mp; #ifdef AFS_DARWIN80_ENV vfs_ioattr(mp, &ioattr); ioattr.io_devblocksize = (16 * 32768); vfs_setioattr(mp, &ioattr); /* f_iosize is handled in VFS_GETATTR */ #else mp->vfs_bsize = 8192; mp->mnt_stat.f_iosize = 8192; #endif vfs_getnewfsid(mp); #ifndef AFS_DARWIN80_ENV (void)copyinstr(path, mp->mnt_stat.f_mntonname, MNAMELEN - 1, &size); memset(mp->mnt_stat.f_mntonname + size, 0, MNAMELEN - size); #endif memset(mnt_stat->f_mntfromname, 0, MNAMELEN); if (data == 0) { strcpy(mnt_stat->f_mntfromname, "AFS"); /* null terminated string "AFS" will fit, just leave it be. */ vfs_setfsprivate(mp, NULL); } else { struct VenusFid *rootFid = NULL; struct volume *tvp; char volName[MNAMELEN]; (void)copyinstr(data, volName, MNAMELEN - 1, &size); memset(volName + size, 0, MNAMELEN - size); if (volName[0] == 0) { strcpy(mnt_stat->f_mntfromname, "AFS"); vfs_setfsprivate(mp, &afs_rootFid); } else { struct cell *localcell = afs_GetPrimaryCell(READ_LOCK); if (localcell == NULL) { AFS_GUNLOCK(); return ENODEV; } /* Set the volume identifier to "AFS:volume.name" */ snprintf(mnt_stat->f_mntfromname, MNAMELEN - 1, "AFS:%s", volName); tvp = afs_GetVolumeByName(volName, localcell->cellNum, 1, (struct vrequest *)0, READ_LOCK); if (tvp) { int volid = (tvp->roVol ? tvp->roVol : tvp->volume); MALLOC(rootFid, struct VenusFid *, sizeof(*rootFid), M_UFSMNT, M_WAITOK); rootFid->Cell = localcell->cellNum; rootFid->Fid.Volume = volid; rootFid->Fid.Vnode = 1; rootFid->Fid.Unique = 1; } else { AFS_GUNLOCK(); return ENODEV; } vfs_setfsprivate(mp, &rootFid); } } #ifdef AFS_DARWIN80_ENV afs_vfs_typenum=vfs_typenum(mp); vfs_setauthopaque(mp); vfs_setauthopaqueaccess(mp); #else strcpy(mp->mnt_stat.f_fstypename, "afs"); #endif AFS_GUNLOCK(); (void)afs_statfs(mp, mnt_stat, ctx); return 0; } int afs_unmount(struct mount *mp, int flags, CTX_TYPE ctx) { void *mdata = vfs_fsprivate(mp); AFS_GLOCK(); AFS_STATCNT(afs_unmount); if (mdata != (qaddr_t) - 1) { if (mdata != NULL) { vfs_setfsprivate(mp, (qaddr_t) - 1); FREE(mdata, M_UFSMNT); } else { if (flags & MNT_FORCE) { if (afs_globalVp) { #ifdef AFS_DARWIN80_ENV afs_PutVCache(afs_globalVp); #else AFS_GUNLOCK(); vrele(AFSTOV(afs_globalVp)); AFS_GLOCK(); #endif } afs_globalVp = NULL; AFS_GUNLOCK(); vflush(mp, NULLVP, FORCECLOSE/*0*/); AFS_GLOCK(); afs_globalVFS = 0; afs_shutdown(); } else { AFS_GUNLOCK(); return EBUSY; } } vfs_clearflags(mp, MNT_LOCAL); } AFS_GUNLOCK(); return 0; } #ifdef AFS_DARWIN80_ENV int afs_root(struct mount *mp, struct vnode **vpp, vfs_context_t ctx) #else int afs_root(struct mount *mp, struct vnode **vpp) #endif { void *mdata = vfs_fsprivate(mp); int error; struct vrequest treq; struct vcache *tvp = 0; struct vcache *gvp; int needref=0; #ifdef AFS_DARWIN80_ENV struct ucred *cr = vfs_context_ucred(ctx); #else struct proc *p = current_proc(); struct ucred _cr; struct ucred *cr = &_cr; pcred_readlock(p); _cr = *p->p_cred->pc_ucred; pcred_unlock(p); #endif AFS_GLOCK(); AFS_STATCNT(afs_root); again: if (mdata == NULL && afs_globalVp && (afs_globalVp->f.states & CStatd)) { tvp = afs_globalVp; error = 0; needref=1; } else if (mdata == (qaddr_t) - 1) { error = ENOENT; } else { struct VenusFid *rootFid = (mdata == NULL) ? &afs_rootFid : (struct VenusFid *)mdata; if (!(error = afs_InitReq(&treq, cr)) && !(error = afs_CheckInit())) { tvp = afs_GetVCache(rootFid, &treq, NULL, NULL); #ifdef AFS_DARWIN80_ENV if (tvp) { AFS_GUNLOCK(); error = afs_darwin_finalizevnode(tvp, NULL, NULL, 1, 0); AFS_GLOCK(); if (error) tvp = NULL; else /* re-acquire the usecount that finalizevnode disposed of */ vnode_ref(AFSTOV(tvp)); } #endif /* we really want this to stay around */ if (tvp) { if (mdata == NULL) { gvp = afs_globalVp; afs_globalVp = tvp; if (gvp) { afs_PutVCache(gvp); if (tvp != afs_globalVp) { /* someone else got there before us! */ afs_PutVCache(tvp); tvp = 0; goto again; } } needref=1; } } else error = ENOENT; } } if (tvp) { #ifndef AFS_DARWIN80_ENV /* KPI callers don't need a usecount reference */ osi_vnhold(tvp, 0); AFS_GUNLOCK(); vn_lock(AFSTOV(tvp), LK_EXCLUSIVE | LK_RETRY, p); AFS_GLOCK(); #endif if (needref) #ifdef AFS_DARWIN80_ENV /* This iocount is for the caller. the initial iocount * is for the eventual afs_PutVCache. for mdata != null, * there will not be a PutVCache, so the caller gets the * initial (from GetVCache or finalizevnode) iocount */ vnode_get(AFSTOV(tvp)); #else ; #endif if (mdata == NULL) afs_globalVFS = mp; *vpp = AFSTOV(tvp); #ifndef AFS_DARWIN80_ENV AFSTOV(tvp)->v_flag |= VROOT; AFSTOV(tvp)->v_vfsp = mp; #endif } afs_Trace2(afs_iclSetp, CM_TRACE_VFSROOT, ICL_TYPE_POINTER, *vpp, ICL_TYPE_INT32, error); AFS_GUNLOCK(); return error; } #ifndef AFS_DARWIN80_ENV /* vget vfsop never had this prototype AFAIK */ int afs_vget(struct mount *mp, int lfl, struct vnode *vp) { int error; //printf("vget called. help!\n"); if (vp->v_usecount < 0) { vprint("bad usecount", vp); panic("afs_vget"); } error = vget(vp, lfl, current_proc()); if (!error) insmntque(vp, mp); /* take off free list */ return error; } int afs_vfs_vget(struct mount *mp, void *ino, struct vnode **vpp) { return ENOENT; /* cannot implement */ } #endif int afs_statfs(struct mount *mp, STATFS_TYPE *abp, CTX_TYPE ctx) { STATFS_TYPE *sysstat = vfs_statfs(mp); AFS_GLOCK(); AFS_STATCNT(afs_statfs); #ifdef AFS_DARWIN80_ENV abp->f_iosize = (256 * 1024); abp->f_bsize = vfs_devblocksize(mp); #else abp->f_bsize = mp->vfs_bsize; abp->f_iosize = mp->vfs_bsize; #endif #if 0 abp->f_type = MOUNT_AFS; #endif /* Fake a high number below to satisfy programs that use the statfs call * to make sure that there's enough space in the device partition before * storing something there. */ abp->f_blocks = abp->f_bfree = abp->f_bavail = abp->f_files = abp->f_ffree = 0x7fffffff; if (abp != sysstat) { abp->f_fsid.val[0] = sysstat->f_fsid.val[0]; abp->f_fsid.val[1] = sysstat->f_fsid.val[1]; #ifndef AFS_DARWIN80_ENV abp->f_type = vfs_typenum(mp); #endif memcpy((caddr_t) & abp->f_mntonname[0], (caddr_t) sysstat->f_mntonname, MNAMELEN); memcpy((caddr_t) & abp->f_mntfromname[0], (caddr_t) sysstat->f_mntfromname, MNAMELEN); } AFS_GUNLOCK(); return 0; } #ifdef AFS_DARWIN80_ENV int afs_vfs_getattr(struct mount *mp, struct vfs_attr *outattrs, vfs_context_t context) { VFSATTR_RETURN(outattrs, f_bsize, vfs_devblocksize(mp)); VFSATTR_RETURN(outattrs, f_iosize, vfs_devblocksize(mp)); VFSATTR_RETURN(outattrs, f_blocks, 2000000); VFSATTR_RETURN(outattrs, f_bfree, 2000000); VFSATTR_RETURN(outattrs, f_bavail, 2000000); VFSATTR_RETURN(outattrs, f_files, 2000000); VFSATTR_RETURN(outattrs, f_ffree, 2000000); if ( VFSATTR_IS_ACTIVE(outattrs, f_capabilities) ) { vol_capabilities_attr_t *vcapattrptr; vcapattrptr = &outattrs->f_capabilities; vcapattrptr->capabilities[VOL_CAPABILITIES_FORMAT] = VOL_CAP_FMT_SYMBOLICLINKS | VOL_CAP_FMT_HARDLINKS | VOL_CAP_FMT_ZERO_RUNS | VOL_CAP_FMT_CASE_SENSITIVE | VOL_CAP_FMT_CASE_PRESERVING | VOL_CAP_FMT_PERSISTENTOBJECTIDS | VOL_CAP_FMT_2TB_FILESIZE | VOL_CAP_FMT_FAST_STATFS; vcapattrptr->capabilities[VOL_CAPABILITIES_INTERFACES] = VOL_CAP_INT_ADVLOCK | VOL_CAP_INT_FLOCK; vcapattrptr->capabilities[VOL_CAPABILITIES_RESERVED1] = 0; vcapattrptr->capabilities[VOL_CAPABILITIES_RESERVED2] = 0; /* Capabilities we know about: */ vcapattrptr->valid[VOL_CAPABILITIES_FORMAT] = VOL_CAP_FMT_PERSISTENTOBJECTIDS | VOL_CAP_FMT_SYMBOLICLINKS | VOL_CAP_FMT_HARDLINKS | VOL_CAP_FMT_JOURNAL | VOL_CAP_FMT_JOURNAL_ACTIVE | VOL_CAP_FMT_NO_ROOT_TIMES | VOL_CAP_FMT_SPARSE_FILES | VOL_CAP_FMT_ZERO_RUNS | VOL_CAP_FMT_CASE_SENSITIVE | VOL_CAP_FMT_CASE_PRESERVING | VOL_CAP_FMT_PERSISTENTOBJECTIDS | VOL_CAP_FMT_2TB_FILESIZE | VOL_CAP_FMT_FAST_STATFS; vcapattrptr->valid[VOL_CAPABILITIES_INTERFACES] = VOL_CAP_INT_SEARCHFS | VOL_CAP_INT_ATTRLIST | VOL_CAP_INT_NFSEXPORT | VOL_CAP_INT_READDIRATTR | VOL_CAP_INT_EXCHANGEDATA | VOL_CAP_INT_COPYFILE | VOL_CAP_INT_ALLOCATE | VOL_CAP_INT_VOL_RENAME | VOL_CAP_INT_ADVLOCK | VOL_CAP_INT_FLOCK; vcapattrptr->valid[VOL_CAPABILITIES_RESERVED1] = 0; vcapattrptr->valid[VOL_CAPABILITIES_RESERVED2] = 0; VFSATTR_SET_SUPPORTED(outattrs, f_capabilities); } return 0; } #endif #ifdef AFS_DARWIN80_ENV int afs_sync(struct mount *mp, int waitfor, CTX_TYPE ctx) #else int afs_sync(struct mount *mp, int waitfor, struct ucred *cred, struct proc *p) #endif { return 0; } u_int32_t afs_darwin_realmodes = 0; u_int32_t afs_darwin_fsevents = 0; extern int AFSDOBULK; int afs_sysctl_int(int *name, u_int namelen, user_addr_t oldp, size_t *oldlenp, user_addr_t newp, size_t newlen, u_int32_t *object) { #ifdef AFS_DARWIN80_ENV int error; if (oldp != USER_ADDR_NULL && oldlenp == NULL) return (EFAULT); if (oldp && *oldlenp < sizeof(u_int32_t)) return (ENOMEM); if (newp && newlen != sizeof(u_int32_t)) return (EINVAL); *oldlenp = sizeof(u_int32_t); if (oldp) { if ((error = copyout(object, oldp, sizeof(u_int32_t)))) { return error; } } if (newp) return copyin(newp, object, sizeof(u_int32_t)); return 0; #else return sysctl_int(oldp, oldlenp, newp, newlen, object); #endif } #ifdef AFS_DARWIN80_ENV int afs_sysctl(int *name, u_int namelen, user_addr_t oldp, size_t *oldlenp, user_addr_t newp, size_t newlen, vfs_context_t context) #else int afs_sysctl(int *name, u_int namelen, void *oldp, size_t *oldlenp, void *newp, size_t newlen, struct proc *p) #endif { switch (name[0]) { case AFS_SC_ALL: /* nothing defined */ break; case AFS_SC_DARWIN: if (namelen < 3) return ENOENT; switch (name[1]) { case AFS_SC_DARWIN_ALL: switch (name[2]) { case AFS_SC_DARWIN_ALL_REALMODES: return afs_sysctl_int(name, namelen, oldp, oldlenp, newp, newlen, &afs_darwin_realmodes); case AFS_SC_DARWIN_ALL_FSEVENTS: return afs_sysctl_int(name, namelen, oldp, oldlenp, newp, newlen, &afs_darwin_fsevents); case AFS_SC_DARWIN_ALL_BULKSTAT: return afs_sysctl_int(name, namelen, oldp, oldlenp, newp, newlen, &AFSDOBULK); } break; /* darwin version specific sysctl's goes here */ } break; } return ENOTSUP; } typedef (*PFI) (); extern int vfs_opv_numops; /* The total number of defined vnode operations */ extern struct vnodeopv_desc afs_vnodeop_opv_desc; int afs_init(struct vfsconf *vfc) { #ifndef AFS_DARWIN80_ENV /* vfs_fsadd does all this junk */ int j; int (**opv_desc_vector) (); struct vnodeopv_entry_desc *opve_descp; MALLOC(afs_vnodeop_p, PFI *, vfs_opv_numops * sizeof(PFI), M_TEMP, M_WAITOK); memset(afs_vnodeop_p, 0, vfs_opv_numops * sizeof(PFI)); opv_desc_vector = afs_vnodeop_p; for (j = 0; afs_vnodeop_opv_desc.opv_desc_ops[j].opve_op; j++) { opve_descp = &(afs_vnodeop_opv_desc.opv_desc_ops[j]); /* * Sanity check: is this operation listed * in the list of operations? We check this * by seeing if its offest is zero. Since * the default routine should always be listed * first, it should be the only one with a zero * offset. Any other operation with a zero * offset is probably not listed in * vfs_op_descs, and so is probably an error. * * A panic here means the layer programmer * has committed the all-too common bug * of adding a new operation to the layer's * list of vnode operations but * not adding the operation to the system-wide * list of supported operations. */ if (opve_descp->opve_op->vdesc_offset == 0 && opve_descp->opve_op->vdesc_offset != VOFFSET(vop_default)) { printf("afs_init: operation %s not listed in %s.\n", opve_descp->opve_op->vdesc_name, "vfs_op_descs"); panic("load_afs: bad operation"); } /* * Fill in this entry. */ opv_desc_vector[opve_descp->opve_op->vdesc_offset] = opve_descp->opve_impl; } /* * Finally, go back and replace unfilled routines * with their default. (Sigh, an O(n^3) algorithm. I * could make it better, but that'd be work, and n is small.) */ /* * Force every operations vector to have a default routine. */ opv_desc_vector = afs_vnodeop_p; if (opv_desc_vector[VOFFSET(vop_default)] == NULL) { panic("afs_init: operation vector without default routine."); } for (j = 0; j < vfs_opv_numops; j++) if (opv_desc_vector[j] == NULL) opv_desc_vector[j] = opv_desc_vector[VOFFSET(vop_default)]; #endif return 0; } struct vfsops afs_vfsops = { afs_mount, afs_start, afs_unmount, afs_root, #ifdef AFS_DARWIN80_ENV 0, afs_vfs_getattr, #else afs_quotactl, afs_statfs, #endif afs_sync, #ifdef AFS_DARWIN80_ENV 0,0,0, #else afs_vfs_vget, afs_fhtovp, afs_vptofh, #endif afs_init, afs_sysctl, #ifdef AFS_DARWIN80_ENV 0 /*setattr */, {0} #endif };