+ if (error = suser(p->p_ucred, &p->p_acflag))
+ return (error);
+ if (nfssvc_sockhead.ns_next == NULL) {
+ nfs_udpsock = (struct nfssvc_sock *)
+ malloc(sizeof (struct nfssvc_sock), M_NFSSVC, M_WAITOK);
+ bzero((caddr_t)nfs_udpsock, sizeof (struct nfssvc_sock));
+ nfs_cltpsock = (struct nfssvc_sock *)
+ malloc(sizeof (struct nfssvc_sock), M_NFSSVC, M_WAITOK);
+ bzero((caddr_t)nfs_cltpsock, sizeof (struct nfssvc_sock));
+ nfssvc_sockhead.ns_next = nfs_udpsock;
+ nfs_udpsock->ns_next = nfs_cltpsock;
+ nfs_cltpsock->ns_next = &nfssvc_sockhead;
+ nfssvc_sockhead.ns_prev = nfs_cltpsock;
+ nfs_cltpsock->ns_prev = nfs_udpsock;
+ nfs_udpsock->ns_prev = &nfssvc_sockhead;
+ nfs_udpsock->ns_lrunext = nfs_udpsock->ns_lruprev =
+ (struct nfsuid *)nfs_udpsock;
+ nfs_cltpsock->ns_lrunext = nfs_cltpsock->ns_lruprev =
+ (struct nfsuid *)nfs_cltpsock;
+ nfsd_head.nd_next = nfsd_head.nd_prev = &nfsd_head;
+ nfsd_head.nd_flag = 0;
+ }
+ if (uap->flag & NFSSVC_BIOD)
+ error = nfssvc_iod(p);
+ else if (uap->flag & NFSSVC_MNTD) {
+ if (error = copyin(uap->argp, (caddr_t)&ncd, sizeof (ncd)))
+ return (error);
+ nd.ni_nameiop = LOOKUP | FOLLOW | LOCKLEAF;
+ nd.ni_segflg = UIO_USERSPACE;
+ nd.ni_dirp = ncd.ncd_dirp;
+ if (error = namei(&nd, p))
+ return (error);
+ if ((nd.ni_vp->v_flag & VROOT) == 0)
+ error = EINVAL;
+ nmp = VFSTONFS(nd.ni_vp->v_mount);
+ vput(nd.ni_vp);
+ if (error)
+ return (error);
+ else if (nmp->nm_flag & NFSMNT_MNTD)
+ return (0);
+ nmp->nm_flag |= NFSMNT_MNTD;
+ error = nqnfs_clientd(nmp, p->p_ucred, &ncd, uap->flag, uap->argp, p);
+ } else if (uap->flag & NFSSVC_ADDSOCK) {
+ if (error = copyin(uap->argp, (caddr_t)&nfsdarg, sizeof (nfsdarg)))
+ return (error);
+ if (error = getsock(p->p_fd, nfsdarg.sock, &fp))
+ return (error);
+ /*
+ * Get the client address for connected sockets.
+ */
+ if (nfsdarg.name == NULL || nfsdarg.namelen == 0)
+ nam = (struct mbuf *)0;
+ else if (error = sockargs(&nam, nfsdarg.name, nfsdarg.namelen,
+ MT_SONAME))
+ return (error);
+ error = nfssvc_addsock(fp, nam);
+ } else {
+ if (error = copyin(uap->argp, (caddr_t)nsd, sizeof (*nsd)))
+ return (error);
+ if ((uap->flag & NFSSVC_AUTHIN) && (nfsd = nsd->nsd_nfsd) &&
+ nfsd->nd_sref == nfsd->nd_slp->ns_sref) {
+ slp = nfsd->nd_slp;
+ if (slp->ns_numuids < nuidhash_max) {
+ slp->ns_numuids++;
+ nuidp = (struct nfsuid *)
+ malloc(sizeof (struct nfsuid), M_NFSUID, M_WAITOK);
+ } else
+ nuidp = (struct nfsuid *)0;
+ if (slp->ns_sref != nfsd->nd_sref) {
+ if (nuidp)
+ free((caddr_t)nuidp, M_NFSUID);
+ } else {
+ if (nuidp == (struct nfsuid *)0) {
+ nuidp = slp->ns_lruprev;
+ remque(nuidp);
+ if (nuidp->nu_hprev)
+ nuidp->nu_hprev->nu_hnext = nuidp->nu_hnext;
+ if (nuidp->nu_hnext)
+ nuidp->nu_hnext->nu_hprev = nuidp->nu_hprev;
+ }
+ nuidp->nu_cr = nsd->nsd_cr;
+ nuidp->nu_cr.cr_ref = 1;
+ nuidp->nu_uid = nsd->nsd_uid;
+ insque(nuidp, (struct nfsuid *)slp);
+ nuh = &slp->ns_uidh[NUIDHASH(nsd->nsd_uid)];
+ if (nuidp->nu_hnext = *nuh)
+ nuidp->nu_hnext->nu_hprev = nuidp;
+ nuidp->nu_hprev = (struct nfsuid *)0;
+ *nuh = nuidp;
+ }
+ }
+ if ((uap->flag & NFSSVC_AUTHINFAIL) && (nfsd = nsd->nsd_nfsd))
+ nfsd->nd_flag |= NFSD_AUTHFAIL;
+ error = nfssvc_nfsd(nsd, uap->argp, p);
+ }
+ if (error == EINTR || error == ERESTART)
+ error = 0;
+ return (error);
+}
+
+/*
+ * Adds a socket to the list for servicing by nfsds.
+ */
+nfssvc_addsock(fp, mynam)
+ struct file *fp;
+ struct mbuf *mynam;
+{
+ register struct mbuf *m;
+ register int siz;
+ register struct nfssvc_sock *slp;
+ register struct socket *so;
+ struct nfssvc_sock *tslp;
+ int error, s;
+