/* ARGSUSED */
void
acl3_getxattrdir(GETXATTRDIR3args *args, GETXATTRDIR3res *resp,
struct exportinfo *exi, struct svc_req *req, cred_t *cr, bool_t ro)
{
int error;
int flags;
vnode_t *vp, *avp;
vp = nfs3_fhtovp(&args->fh, exi);
if (vp == NULL) {
resp->status = NFS3ERR_STALE;
return;
}
flags = LOOKUP_XATTR;
if (args->create)
flags |= CREATE_XATTR_DIR;
else {
ulong_t val = 0;
error = VOP_PATHCONF(vp, _PC_SATTR_EXISTS, &val, cr, NULL);
if (!error && val == 0) {
error = VOP_PATHCONF(vp, _PC_XATTR_EXISTS,
&val, cr, NULL);
if (!error && val == 0) {
VN_RELE(vp);
resp->status = NFS3ERR_NOENT;
return;
}
}
}
error = VOP_LOOKUP(vp, "", &avp, NULL, flags, NULL, cr,
NULL, NULL, NULL);
if (!error && avp == vp) { /* lookup of "" on old FS? */
error = EINVAL;
VN_RELE(avp);
}
if (!error) {
struct vattr va;
va.va_mask = AT_ALL;
error = rfs4_delegated_getattr(avp, &va, 0, cr);
if (!error) {
vattr_to_post_op_attr(&va, &resp->resok.attr);
error = makefh3(&resp->resok.fh, avp, exi);
}
VN_RELE(avp);
}
VN_RELE(vp);
if (error) {
resp->status = puterrno3(error);
return;
}
resp->status = NFS3_OK;
}
static int
unionfs_pathconf(void *v)
{
struct vop_pathconf_args *ap = v;
struct unionfs_node *unp;
struct vnode *vp;
unp = VTOUNIONFS(ap->a_vp);
vp = (unp->un_uppervp != NULLVP ? unp->un_uppervp : unp->un_lowervp);
return (VOP_PATHCONF(vp, ap->a_name, ap->a_retval));
}
int
RUMP_VOP_PATHCONF(struct vnode *vp,
int name,
register_t *retval)
{
int error;
rump_schedule();
error = VOP_PATHCONF(vp, name, retval);
rump_unschedule();
return error;
}
/*
* Determine if the file system supports NFSv4 ACLs.
* Return 1 if it does, 0 otherwise.
*/
int
nfs_supportsnfsv4acls(struct vnode *vp)
{
int error;
register_t retval;
ASSERT_VOP_LOCKED(vp, "nfs supports nfsv4acls");
if (nfsrv_useacl == 0)
return (0);
error = VOP_PATHCONF(vp, _PC_ACL_NFS4, &retval);
if (error == 0 && retval != 0)
return (1);
return (0);
}
/*
* Return pathconf information about a file descriptor.
*/
int
sys_fpathconf(struct lwp *l, const struct sys_fpathconf_args *uap,
register_t *retval)
{
/* {
syscallarg(int) fd;
syscallarg(int) name;
} */
int fd, error;
file_t *fp;
fd = SCARG(uap, fd);
error = 0;
if ((fp = fd_getfile(fd)) == NULL) {
return (EBADF);
}
switch (fp->f_type) {
case DTYPE_SOCKET:
case DTYPE_PIPE:
if (SCARG(uap, name) != _PC_PIPE_BUF)
error = EINVAL;
else
*retval = PIPE_BUF;
break;
case DTYPE_VNODE:
error = VOP_PATHCONF(fp->f_vnode, SCARG(uap, name), retval);
break;
case DTYPE_KQUEUE:
error = EINVAL;
break;
default:
error = EOPNOTSUPP;
break;
}
fd_putfile(fd);
return (error);
}
static int
devfs_pathconf(vnode_t *vp, int cmd, ulong_t *valp, cred_t *cr)
{
switch (cmd) {
case _PC_ACL_ENABLED:
/*
* We rely on the underlying filesystem for ACLs,
* so direct the query for ACL support there.
* ACL support isn't relative to the file
* and we can't guarantee that the dv node
* has an attribute node, so any valid
* attribute node will suffice.
*/
ASSERT(dvroot);
ASSERT(dvroot->dv_attrvp);
return (VOP_PATHCONF(dvroot->dv_attrvp, cmd, valp, cr));
/*NOTREACHED*/
}
return (fs_pathconf(vp, cmd, valp, cr));
}
/*
* Do the pathconf vnode op.
*/
int
nfsvno_pathconf(struct vnode *vp, int flag, register_t *retf,
struct ucred *cred, struct thread *p)
{
int error;
error = VOP_PATHCONF(vp, flag, retf);
if (error == EOPNOTSUPP || error == EINVAL) {
/*
* Some file systems return EINVAL for name arguments not
* supported and some return EOPNOTSUPP for this case.
* So the NFSv3 Pathconf RPC doesn't fail for these cases,
* just fake them.
*/
switch (flag) {
case _PC_LINK_MAX:
*retf = LINK_MAX;
break;
case _PC_NAME_MAX:
*retf = NAME_MAX;
break;
case _PC_CHOWN_RESTRICTED:
*retf = 1;
break;
case _PC_NO_TRUNC:
*retf = 1;
break;
default:
/*
* Only happens if a _PC_xxx is added to the server,
* but this isn't updated.
*/
*retf = 0;
printf("nfsrvd pathconf flag=%d not supp\n", flag);
};
error = 0;
}
NFSEXITCODE(error);
return (error);
}
/*
* smb_vop_acl_type
*
* Determines the ACL type for the given vnode.
* ACLENT_T is a Posix ACL and ACE_T is a ZFS ACL.
*/
acl_type_t
smb_vop_acl_type(vnode_t *vp)
{
int error;
ulong_t whichacl;
error = VOP_PATHCONF(vp, _PC_ACL_ENABLED, &whichacl, kcred, NULL);
if (error != 0) {
/*
* If we got an error, then the filesystem
* likely does not understand the _PC_ACL_ENABLED
* pathconf. In this case, we fall back to trying
* POSIX-draft (aka UFS-style) ACLs.
*/
whichacl = _ACL_ACLENT_ENABLED;
}
if (!(whichacl & (_ACL_ACE_ENABLED | _ACL_ACLENT_ENABLED))) {
/*
* If the file system supports neither ACE nor
* ACLENT ACLs we will fall back to UFS-style ACLs
* like we did above if there was an error upon
* calling VOP_PATHCONF.
*
* ACE and ACLENT type ACLs are the only interfaces
* supported thus far. If any other bits are set on
* 'whichacl' upon return from VOP_PATHCONF, we will
* ignore them.
*/
whichacl = _ACL_ACLENT_ENABLED;
}
if (whichacl == _ACL_ACLENT_ENABLED)
return (ACLENT_T);
return (ACE_T);
}
/*
* Get the XATTR dir for some file or directory.
* See vnode.c: fop_lookup()
*
* Note this only gets the GFS XATTR directory. We'll get the
* real XATTR directory later, in xattr_dir_realdir.
*/
int
xattr_dir_lookup(vnode_t *dvp, vnode_t **vpp, int flags, cred_t *cr)
{
int error = 0;
*vpp = NULL;
if (dvp->v_type != VDIR && dvp->v_type != VREG)
return (EINVAL);
mutex_enter(&dvp->v_lock);
/*
* If we're already in sysattr space, don't allow creation
* of another level of sysattrs.
*/
if (dvp->v_flag & V_SYSATTR) {
mutex_exit(&dvp->v_lock);
return (EINVAL);
}
if (dvp->v_xattrdir != NULL) {
*vpp = dvp->v_xattrdir;
VN_HOLD(*vpp);
} else {
ulong_t val;
int xattrs_allowed = dvp->v_vfsp->vfs_flag & VFS_XATTR;
int sysattrs_allowed = 1;
/*
* We have to drop the lock on dvp. gfs_dir_create will
* grab it for a VN_HOLD.
*/
mutex_exit(&dvp->v_lock);
/*
* If dvp allows xattr creation, but not sysattr
* creation, return the real xattr dir vp. We can't
* use the vfs feature mask here because _PC_SATTR_ENABLED
* has vnode-level granularity (e.g. .zfs).
*/
error = VOP_PATHCONF(dvp, _PC_SATTR_ENABLED, &val, cr, NULL);
if (error != 0 || val == 0)
sysattrs_allowed = 0;
if (!xattrs_allowed && !sysattrs_allowed)
return (EINVAL);
if (!sysattrs_allowed) {
struct pathname pn;
char *nm = "";
error = pn_get(nm, UIO_SYSSPACE, &pn);
if (error)
return (error);
error = VOP_LOOKUP(dvp, nm, vpp, &pn,
flags|LOOKUP_HAVE_SYSATTR_DIR, rootvp, cr, NULL,
NULL, NULL);
pn_free(&pn);
return (error);
}
/*
* Note that we act as if we were given CREATE_XATTR_DIR,
* but only for creation of the GFS directory.
*/
*vpp = gfs_dir_create(
sizeof (xattr_dir_t), dvp, xattr_dir_ops, xattr_dirents,
xattrdir_do_ino, MAXNAMELEN, NULL, xattr_lookup_cb);
mutex_enter(&dvp->v_lock);
if (dvp->v_xattrdir != NULL) {
/*
* We lost the race to create the xattr dir.
* Destroy this one, use the winner. We can't
* just call VN_RELE(*vpp), because the vnode
* is only partially initialized.
*/
gfs_dir_t *dp = (*vpp)->v_data;
ASSERT((*vpp)->v_count == 1);
vn_free(*vpp);
mutex_destroy(&dp->gfsd_lock);
kmem_free(dp->gfsd_static,
dp->gfsd_nstatic * sizeof (gfs_dirent_t));
kmem_free(dp, dp->gfsd_file.gfs_size);
/*
* There is an implied VN_HOLD(dvp) here. We should
* be doing a VN_RELE(dvp) to clean up the reference
* from *vpp, and then a VN_HOLD(dvp) for the new
* reference. Instead, we just leave the count alone.
*/
*vpp = dvp->v_xattrdir;
VN_HOLD(*vpp);
} else {
(*vpp)->v_flag |= (V_XATTRDIR|V_SYSATTR);
dvp->v_xattrdir = *vpp;
}
}
mutex_exit(&dvp->v_lock);
return (error);
}
