/* * Copyright (c) 1995, 1996, 1997, 1998, 1999 Kungliga Tekniska Högskolan * (Royal Institute of Technology, Stockholm, Sweden). * All rights reserved. * * 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 the Kungliga Tekniska * Högskolan and its contributors. * * 4. Neither the name of the Institute nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``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 THE INSTITUTE OR CONTRIBUTORS 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. */ #include RCSID("$Id: xfs_vfsops-bsd.c,v 1.41.2.1 1999/08/08 16:33:29 assar Exp $"); /* * XFS vfs operations. */ #include #include #include #include #include #include #include #include int xfs_mount(struct mount *mp, const char *user_path, caddr_t user_data, struct nameidata *ndp, struct proc *p) { return xfs_mount_common(mp, user_path, user_data, ndp, p); } int xfs_start(struct mount * mp, int flags, struct proc * p) { XFSDEB(XDEBVFOPS, ("xfs_start mp = %p, flags = %d, proc = %p\n", mp, flags, p)); return 0; } int xfs_unmount(struct mount * mp, int mntflags, struct proc *p) { XFSDEB(XDEBVFOPS, ("xfs_umount: mp = %p, mntflags = %d, proc = %p\n", mp, mntflags, p)); return xfs_unmount_common(mp, mntflags); } int xfs_root(struct mount *mp, struct vnode **vpp) { XFSDEB(XDEBVFOPS, ("xfs_root mp = %p\n", mp)); return xfs_root_common(mp, vpp, curproc, curproc->p_ucred); } int xfs_quotactl(struct mount *mp, int cmd, uid_t uid, caddr_t arg, struct proc *p) { XFSDEB(XDEBVFOPS, ("xfs_quotactl: mp = %p, cmd = %d, uid = %u, " "arg = %p, proc = %p\n", mp, cmd, uid, arg, p)); return EOPNOTSUPP; } int xfs_statfs(struct mount *mp, struct statfs *sbp, struct proc *p) { XFSDEB(XDEBVFOPS, ("xfs_statfs: mp = %p, sbp = %p, proc = %p\n", mp, sbp, p)); bcopy(&mp->mnt_stat, sbp, sizeof(*sbp)); return 0; } int xfs_sync(struct mount *mp, int waitfor, struct ucred *cred, struct proc *p) { XFSDEB(XDEBVFOPS, ("xfs_sync: mp = %p, waitfor = %d, " "cred = %p, proc = %p\n", mp, waitfor, cred, p)); return 0; } int xfs_vget(struct mount * mp, ino_t ino, struct vnode ** vpp) { XFSDEB(XDEBVFOPS, ("xfs_vget\n")); return EOPNOTSUPP; } int xfs_fhtovp(struct mount * mp, struct fid * fhp, struct mbuf * nam, struct vnode ** vpp, int *exflagsp, struct ucred ** credanonp) { #ifdef ARLA_KNFS static struct ucred fhtovpcred; struct netcred *np = NULL; struct xfs_node *xn; struct vnode *vp; xfs_handle handle; int error; XFSDEB(XDEBVFOPS, ("xfs_fhtovp\n")); if (fhp->fid_len != 16) { printf("xfs_fhtovp: *PANIC* got a invalid length of a fid\n"); return EINVAL; } /* XXX: Should see if we is exported to this client */ #if 0 np = vfs_export_lookup(mp, &ump->um_export, nam); if (np == NULL) return EACCES; #endif memcpy(&handle, fhp->fid_data, sizeof(handle)); XFSDEB(XDEBVFOPS, ("xfs_fhtovp: fid: %d.%d.%d.%d\n", handle.a, handle.d, handle.c, handle.d)); XFSDEB(XDEBVFOPS, ("xfs_fhtovp: xfs_vnode_find\n")); xn = xfs_node_find(&xfs[0], &handle); /* XXX: 0 */ if (xn == NULL) { struct xfs_message_getattr msg; error = xfs_getnewvnode(xfs[0].mp, &vp, &handle); if (error) return error; xfs_do_vget(vp, 0, current); } else { /* XXX access ? */ vp = XNODE_TO_VNODE(xn); /* XXX wrong ? (we tell arla below) */ if (vp->v_usecount <= 0) xfs_do_vget(vp, 0, current); else VREF(vp); error = 0; } if (error == 0) { fhtovpcred.cr_uid = 0; fhtovpcred.cr_gid = 0; fhtovpcred.cr_ngroups = 0; *vpp = vp; #ifdef MNT_EXPUBLIC *exflagsp = MNT_EXPUBLIC; #else *exflagsp = 0; #endif *credanonp = &fhtovpcred; XFSDEB(XDEBVFOPS, ("xfs_fhtovp done\n")); /* * XXX tell arla about this node is hold by nfsd. * There need to be code in xfs_write too. */ } else XFSDEB(XDEBVFOPS, ("xfs_fhtovp failed (%d);", error)); return error; #else return EOPNOTSUPP; #endif } int xfs_vptofh(struct vnode * vp, struct fid * fhp) { #ifdef ARLA_KNFS struct xfs_node *xn; XFSDEB(XDEBVFOPS, ("xfs_vptofh\n")); if (MAXFIDSZ < 16) return EOPNOTSUPP; xn = VNODE_TO_XNODE(vp); if (xn == NULL) return EINVAL; fhp->fid_len = 16; memcpy(fhp->fid_data, &xn->handle, 16); return 0; #else XFSDEB(XDEBVFOPS, ("xfs_vptofh\n")); return EOPNOTSUPP; #endif } /* * xfs complete dead vnodes implementation. * * this is because the dead_vnodeops_p is _not_ filesystem, but rather * a part of the vfs-layer. */ int xfs_dead_lookup(struct vop_lookup_args * ap) /* struct vop_lookup_args { struct vnodeop_desc *a_desc; struct vnode *a_dvp; struct vnode **a_vpp; struct componentname *a_cnp; }; */ { *ap->a_vpp = NULL; return ENOTDIR; } /* * Given `fsid', `fileid', and `gen', return in `vpp' a locked and * ref'ed vnode from that file system with that id and generation. * All is done in the context of `proc'. Returns 0 if succesful, and * error otherwise. */ int xfs_fhlookup (struct proc *proc, struct xfs_fhandle_t *fhp, struct vnode **vpp) { int error; struct mount *mp; #if !(defined(HAVE_GETFH) && defined(HAVE_FHOPEN)) struct ucred *cred = proc->p_ucred; struct vattr vattr; fsid_t fsid; struct xfs_fh_args *fh_args = (struct xfs_fh_args *)fhp->fhdata; XFSDEB(XDEBVFOPS, ("xfs_fhlookup (xfs)\n")); error = xfs_suser (proc); if (error) return EPERM; if (fhp->len < sizeof(struct xfs_fh_args)) return EINVAL; fsid = SCARG(fh_args, fsid); mp = xfs_vfs_getvfs (&fsid); if (mp == NULL) return ENXIO; error = VFS_VGET(mp, SCARG(fh_args, fileid), vpp); if (error) return error; error = VOP_GETATTR(*vpp, &vattr, cred, proc); if (error) { vput(*vpp); return error; } if (vattr.va_gen != SCARG(fh_args, gen)) { vput(*vpp); return ENOENT; } #else /* HAVE_GETFH && HAVE_FHOPEN */ { fhandle_t *fh = (fhandle_t *) fhp; XFSDEB(XDEBVFOPS, ("xfs_fhlookup (native)\n")); mp = xfs_vfs_getvfs (&fh->fh_fsid); if (mp == NULL) return ESTALE; if ((error = VFS_FHTOVP(mp, &fh->fh_fid, vpp)) != 0) { *vpp = NULL; return error; } } #endif /* HAVE_GETFH && HAVE_FHOPEN */ #ifdef HAVE_KERNEL_VFS_OBJECT_CREATE if ((*vpp)->v_type == VREG && (*vpp)->v_object == NULL) xfs_vfs_object_create (*vpp, proc, proc->p_ucred); #endif return 0; } /* * Perform an open operation on the vnode identified by a `xfs_fhandle_t' * (see xfs_fhlookup) with flags `user_flags'. Returns 0 or * error. If succsesful, the file descriptor is returned in `retval'. */ int xfs_fhopen (struct proc *proc, struct xfs_fhandle_t *fhp, int user_flags, register_t *retval) { int error; struct vnode *vp; struct ucred *cred = proc->p_ucred; int flags = FFLAGS(user_flags); int index; struct file *fp; extern struct fileops vnops; XFSDEB(XDEBVFOPS, ("xfs_fhopen: flags = %d\n", user_flags)); #if defined(HAVE_GETFH) && defined(HAVE_FHOPEN) return sys_fhopen (proc, fhp, retval); #else error = xfs_fhlookup (proc, fhp, &vp); if (error) return error; error = VOP_OPEN(vp, flags, cred, proc); if (error) goto out; error = falloc(proc, &fp, &index); if (error) goto out; if (flags & FWRITE) vp->v_writecount++; #if __FreeBSD_version >= 300000 if (vp->v_type == VREG) { error = xfs_vfs_object_create(vp, proc, proc->p_cred->pc_ucred); if (error) goto out; } #endif fp->f_flag = flags & FMASK; fp->f_type = DTYPE_VNODE; fp->f_ops = &vnops; fp->f_data = (caddr_t)vp; xfs_vfs_unlock(vp, proc); *retval = index; #ifdef FILE_UNUSE FILE_UNUSE(fp, proc); #endif return 0; out: vput(vp); return error; #endif /* have HAVE_GETFH && HAVE_FHOPEN */ }