2 * Copyright (c) 1989, 1993
3 * The Regents of the University of California. All rights reserved.
5 * This code is derived from software contributed to Berkeley by
6 * Rick Macklem at The University of Guelph.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. All advertising materials mentioning features or use of this software
17 * must display the following acknowledgement:
18 * This product includes software developed by the University of
19 * California, Berkeley and its contributors.
20 * 4. Neither the name of the University nor the names of its contributors
21 * may be used to endorse or promote products derived from this software
22 * without specific prior written permission.
24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
36 * @(#)nfs_subs.c 8.8 (Berkeley) 5/22/95
41 * These functions support the macros and help fiddle mbuf chains for
42 * the nfs op functions. They do things like create the rpc header and
43 * copy data between mbuf chains and uio lists.
45 #include <sys/param.h>
46 #include <sys/systm.h>
47 #include <sys/kernel.h>
51 #include <sys/mount.h>
52 #include <sys/vnode.h>
53 #include <sys/namei.h>
55 #include <sys/socket.h>
57 #include <sys/malloc.h>
58 #include <sys/sysent.h>
59 #include <sys/syscall.h>
62 #include <vm/vm_object.h>
63 #include <vm/vm_extern.h>
64 #include <vm/vm_zone.h>
66 #include <nfs/rpcv2.h>
67 #include <nfs/nfsproto.h>
69 #include <nfs/nfsnode.h>
70 #include <nfs/xdr_subs.h>
71 #include <nfs/nfsm_subs.h>
72 #include <nfs/nfsmount.h>
73 #include <nfs/nqnfs.h>
74 #include <nfs/nfsrtt.h>
76 #include <netinet/in.h>
79 * Data items converted to xdr at startup, since they are constant
80 * This is kinda hokey, but may save a little time doing byte swaps
82 u_int32_t nfs_xdrneg1;
83 u_int32_t rpc_call, rpc_vers, rpc_reply, rpc_msgdenied, rpc_autherr,
84 rpc_mismatch, rpc_auth_unix, rpc_msgaccepted,
86 u_int32_t nfs_prog, nqnfs_prog, nfs_true, nfs_false;
88 /* And other global data */
89 static u_int32_t nfs_xid = 0;
90 static enum vtype nv2tov_type[8]= {
91 VNON, VREG, VDIR, VBLK, VCHR, VLNK, VNON, VNON
93 enum vtype nv3tov_type[8]= {
94 VNON, VREG, VDIR, VBLK, VCHR, VLNK, VSOCK, VFIFO
98 int nfs_pbuf_freecnt = -1; /* start out unlimited */
100 struct nfs_reqq nfs_reqq;
101 struct nfssvc_sockhead nfssvc_sockhead;
102 int nfssvc_sockhead_flag;
103 struct nfsd_head nfsd_head;
105 struct nfs_bufq nfs_bufq;
106 struct nqtimerhead nqtimerhead;
107 struct nqfhhashhead *nqfhhashtbl;
110 static void (*nfs_prev_lease_updatetime) __P((int));
111 static int nfs_prev_nfssvc_sy_narg;
112 static sy_call_t *nfs_prev_nfssvc_sy_call;
116 static vop_t *nfs_prev_vop_lease_check;
119 * Mapping of old NFS Version 2 RPC numbers to generic numbers.
121 int nfsv3_procid[NFS_NPROCS] = {
150 #endif /* NFS_NOSERVER */
152 * and the reverse mapping from generic to Version 2 procedure numbers
154 int nfsv2_procid[NFS_NPROCS] = {
185 * Maps errno values to nfs error numbers.
186 * Use NFSERR_IO as the catch all for ones not specifically defined in
189 static u_char nfsrv_v2errmap[ELAST] = {
190 NFSERR_PERM, NFSERR_NOENT, NFSERR_IO, NFSERR_IO, NFSERR_IO,
191 NFSERR_NXIO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO,
192 NFSERR_IO, NFSERR_IO, NFSERR_ACCES, NFSERR_IO, NFSERR_IO,
193 NFSERR_IO, NFSERR_EXIST, NFSERR_IO, NFSERR_NODEV, NFSERR_NOTDIR,
194 NFSERR_ISDIR, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO,
195 NFSERR_IO, NFSERR_FBIG, NFSERR_NOSPC, NFSERR_IO, NFSERR_ROFS,
196 NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO,
197 NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO,
198 NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO,
199 NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO,
200 NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO,
201 NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO,
202 NFSERR_IO, NFSERR_IO, NFSERR_NAMETOL, NFSERR_IO, NFSERR_IO,
203 NFSERR_NOTEMPTY, NFSERR_IO, NFSERR_IO, NFSERR_DQUOT, NFSERR_STALE,
204 NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO,
205 NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO,
206 NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO,
207 NFSERR_IO /* << Last is 86 */
211 * Maps errno values to nfs error numbers.
212 * Although it is not obvious whether or not NFS clients really care if
213 * a returned error value is in the specified list for the procedure, the
214 * safest thing to do is filter them appropriately. For Version 2, the
215 * X/Open XNFS document is the only specification that defines error values
216 * for each RPC (The RFC simply lists all possible error values for all RPCs),
217 * so I have decided to not do this for Version 2.
218 * The first entry is the default error return and the rest are the valid
219 * errors for that RPC in increasing numeric order.
221 static short nfsv3err_null[] = {
226 static short nfsv3err_getattr[] = {
235 static short nfsv3err_setattr[] = {
251 static short nfsv3err_lookup[] = {
264 static short nfsv3err_access[] = {
273 static short nfsv3err_readlink[] = {
285 static short nfsv3err_read[] = {
297 static short nfsv3err_write[] = {
312 static short nfsv3err_create[] = {
329 static short nfsv3err_mkdir[] = {
346 static short nfsv3err_symlink[] = {
363 static short nfsv3err_mknod[] = {
381 static short nfsv3err_remove[] = {
395 static short nfsv3err_rmdir[] = {
413 static short nfsv3err_rename[] = {
436 static short nfsv3err_link[] = {
456 static short nfsv3err_readdir[] = {
469 static short nfsv3err_readdirplus[] = {
483 static short nfsv3err_fsstat[] = {
492 static short nfsv3err_fsinfo[] = {
500 static short nfsv3err_pathconf[] = {
508 static short nfsv3err_commit[] = {
517 static short *nfsrv_v3errmap[] = {
535 nfsv3err_readdirplus,
542 #endif /* NFS_NOSERVER */
544 extern struct nfsrtt nfsrtt;
545 extern time_t nqnfsstarttime;
546 extern int nqsrv_clockskew;
547 extern int nqsrv_writeslack;
548 extern int nqsrv_maxlease;
549 extern struct nfsstats nfsstats;
550 extern int nqnfs_piggy[NFS_NPROCS];
551 extern nfstype nfsv2_type[9];
552 extern nfstype nfsv3_type[9];
553 extern struct nfsnodehashhead *nfsnodehashtbl;
554 extern u_long nfsnodehash;
557 extern int nfssvc(struct proc *, struct nfssvc_args *, int *);
559 LIST_HEAD(nfsnodehashhead, nfsnode);
561 int nfs_webnamei __P((struct nameidata *, struct vnode *, struct proc *));
569 return ((u_quad_t)tv.tv_sec * 1000000 + (u_quad_t)tv.tv_usec);
573 * Create the header for an rpc request packet
574 * The hsiz is the size of the rest of the nfs request header.
575 * (just used to decide if a cluster is a good idea)
578 nfsm_reqh(vp, procid, hsiz, bposp)
584 register struct mbuf *mb;
585 register u_int32_t *tl;
586 register caddr_t bpos;
588 struct nfsmount *nmp;
591 MGET(mb, M_TRYWAIT, MT_DATA);
592 if (hsiz >= MINCLSIZE)
593 MCLGET(mb, M_TRYWAIT);
595 bpos = mtod(mb, caddr_t);
598 * For NQNFS, add lease request.
601 nmp = VFSTONFS(vp->v_mount);
602 if (nmp->nm_flag & NFSMNT_NQNFS) {
603 nqflag = NQNFS_NEEDLEASE(vp, procid);
605 nfsm_build(tl, u_int32_t *, 2*NFSX_UNSIGNED);
606 *tl++ = txdr_unsigned(nqflag);
607 *tl = txdr_unsigned(nmp->nm_leaseterm);
609 nfsm_build(tl, u_int32_t *, NFSX_UNSIGNED);
614 /* Finally, return values */
620 * Build the RPC header and fill in the authorization info.
621 * The authorization string argument is only used when the credentials
622 * come from outside of the kernel.
623 * Returns the head of the mbuf list.
626 nfsm_rpchead(cr, nmflag, procid, auth_type, auth_len, auth_str, verf_len,
627 verf_str, mrest, mrest_len, mbp, xidp)
628 register struct ucred *cr;
641 register struct mbuf *mb;
642 register u_int32_t *tl;
643 register caddr_t bpos;
645 struct mbuf *mreq, *mb2;
646 int siz, grpsiz, authsiz;
648 authsiz = nfsm_rndup(auth_len);
649 MGETHDR(mb, M_TRYWAIT, MT_DATA);
650 if ((authsiz + 10 * NFSX_UNSIGNED) >= MINCLSIZE) {
651 MCLGET(mb, M_TRYWAIT);
652 } else if ((authsiz + 10 * NFSX_UNSIGNED) < MHLEN) {
653 MH_ALIGN(mb, authsiz + 10 * NFSX_UNSIGNED);
655 MH_ALIGN(mb, 8 * NFSX_UNSIGNED);
659 bpos = mtod(mb, caddr_t);
662 * First the RPC header.
664 nfsm_build(tl, u_int32_t *, 8 * NFSX_UNSIGNED);
666 /* Get a pretty random xid to start with */
670 * Skip zero xid if it should ever happen.
675 *tl++ = *xidp = txdr_unsigned(nfs_xid);
678 if (nmflag & NFSMNT_NQNFS) {
679 *tl++ = txdr_unsigned(NQNFS_PROG);
680 *tl++ = txdr_unsigned(NQNFS_VER3);
682 *tl++ = txdr_unsigned(NFS_PROG);
683 if (nmflag & NFSMNT_NFSV3)
684 *tl++ = txdr_unsigned(NFS_VER3);
686 *tl++ = txdr_unsigned(NFS_VER2);
688 if (nmflag & NFSMNT_NFSV3)
689 *tl++ = txdr_unsigned(procid);
691 *tl++ = txdr_unsigned(nfsv2_procid[procid]);
694 * And then the authorization cred.
696 *tl++ = txdr_unsigned(auth_type);
697 *tl = txdr_unsigned(authsiz);
700 nfsm_build(tl, u_int32_t *, auth_len);
701 *tl++ = 0; /* stamp ?? */
702 *tl++ = 0; /* NULL hostname */
703 *tl++ = txdr_unsigned(cr->cr_uid);
704 *tl++ = txdr_unsigned(cr->cr_groups[0]);
705 grpsiz = (auth_len >> 2) - 5;
706 *tl++ = txdr_unsigned(grpsiz);
707 for (i = 1; i <= grpsiz; i++)
708 *tl++ = txdr_unsigned(cr->cr_groups[i]);
713 if (M_TRAILINGSPACE(mb) == 0) {
714 MGET(mb2, M_TRYWAIT, MT_DATA);
715 if (siz >= MINCLSIZE)
716 MCLGET(mb2, M_TRYWAIT);
720 bpos = mtod(mb, caddr_t);
722 i = min(siz, M_TRAILINGSPACE(mb));
723 bcopy(auth_str, bpos, i);
729 if ((siz = (nfsm_rndup(auth_len) - auth_len)) > 0) {
730 for (i = 0; i < siz; i++)
738 * And the verifier...
740 nfsm_build(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
742 *tl++ = txdr_unsigned(RPCAUTH_KERB4);
743 *tl = txdr_unsigned(verf_len);
746 if (M_TRAILINGSPACE(mb) == 0) {
747 MGET(mb2, M_TRYWAIT, MT_DATA);
748 if (siz >= MINCLSIZE)
749 MCLGET(mb2, M_TRYWAIT);
753 bpos = mtod(mb, caddr_t);
755 i = min(siz, M_TRAILINGSPACE(mb));
756 bcopy(verf_str, bpos, i);
762 if ((siz = (nfsm_rndup(verf_len) - verf_len)) > 0) {
763 for (i = 0; i < siz; i++)
768 *tl++ = txdr_unsigned(RPCAUTH_NULL);
772 mreq->m_pkthdr.len = authsiz + 10 * NFSX_UNSIGNED + mrest_len;
773 mreq->m_pkthdr.rcvif = (struct ifnet *)0;
779 * copies mbuf chain to the uio scatter/gather list
782 nfsm_mbuftouio(mrep, uiop, siz, dpos)
784 register struct uio *uiop;
788 register char *mbufcp, *uiocp;
789 register int xfer, left, len;
790 register struct mbuf *mp;
796 len = mtod(mp, caddr_t)+mp->m_len-mbufcp;
797 rem = nfsm_rndup(siz)-siz;
799 if (uiop->uio_iovcnt <= 0 || uiop->uio_iov == NULL)
801 left = uiop->uio_iov->iov_len;
802 uiocp = uiop->uio_iov->iov_base;
811 mbufcp = mtod(mp, caddr_t);
814 xfer = (left > len) ? len : left;
817 if (uiop->uio_iov->iov_op != NULL)
818 (*(uiop->uio_iov->iov_op))
819 (mbufcp, uiocp, xfer);
822 if (uiop->uio_segflg == UIO_SYSSPACE)
823 bcopy(mbufcp, uiocp, xfer);
825 copyout(mbufcp, uiocp, xfer);
830 uiop->uio_offset += xfer;
831 uiop->uio_resid -= xfer;
833 if (uiop->uio_iov->iov_len <= siz) {
837 uiop->uio_iov->iov_base += uiosiz;
838 uiop->uio_iov->iov_len -= uiosiz;
846 error = nfs_adv(mrep, dpos, rem, len);
854 * copies a uio scatter/gather list to an mbuf chain.
855 * NOTE: can ony handle iovcnt == 1
858 nfsm_uiotombuf(uiop, mq, siz, bpos)
859 register struct uio *uiop;
864 register char *uiocp;
865 register struct mbuf *mp, *mp2;
866 register int xfer, left, mlen;
867 int uiosiz, clflg, rem;
871 if (uiop->uio_iovcnt != 1)
872 panic("nfsm_uiotombuf: iovcnt != 1");
875 if (siz > MLEN) /* or should it >= MCLBYTES ?? */
879 rem = nfsm_rndup(siz)-siz;
882 left = uiop->uio_iov->iov_len;
883 uiocp = uiop->uio_iov->iov_base;
888 mlen = M_TRAILINGSPACE(mp);
890 MGET(mp, M_TRYWAIT, MT_DATA);
892 MCLGET(mp, M_TRYWAIT);
896 mlen = M_TRAILINGSPACE(mp);
898 xfer = (left > mlen) ? mlen : left;
901 if (uiop->uio_iov->iov_op != NULL)
902 (*(uiop->uio_iov->iov_op))
903 (uiocp, mtod(mp, caddr_t)+mp->m_len, xfer);
906 if (uiop->uio_segflg == UIO_SYSSPACE)
907 bcopy(uiocp, mtod(mp, caddr_t)+mp->m_len, xfer);
909 copyin(uiocp, mtod(mp, caddr_t)+mp->m_len, xfer);
913 uiop->uio_offset += xfer;
914 uiop->uio_resid -= xfer;
916 uiop->uio_iov->iov_base += uiosiz;
917 uiop->uio_iov->iov_len -= uiosiz;
921 if (rem > M_TRAILINGSPACE(mp)) {
922 MGET(mp, M_TRYWAIT, MT_DATA);
926 cp = mtod(mp, caddr_t)+mp->m_len;
927 for (left = 0; left < rem; left++)
932 *bpos = mtod(mp, caddr_t)+mp->m_len;
938 * Help break down an mbuf chain by setting the first siz bytes contiguous
939 * pointed to by returned val.
940 * This is used by the macros nfsm_dissect and nfsm_dissecton for tough
941 * cases. (The macros use the vars. dpos and dpos2)
944 nfsm_disct(mdp, dposp, siz, left, cp2)
951 register struct mbuf *mp, *mp2;
952 register int siz2, xfer;
957 *mdp = mp = mp->m_next;
961 *dposp = mtod(mp, caddr_t);
966 } else if (mp->m_next == NULL) {
968 } else if (siz > MHLEN) {
969 panic("nfs S too big");
971 MGET(mp2, M_TRYWAIT, MT_DATA);
972 mp2->m_next = mp->m_next;
976 *cp2 = p = mtod(mp, caddr_t);
977 bcopy(*dposp, p, left); /* Copy what was left */
981 /* Loop around copying up the siz2 bytes */
985 xfer = (siz2 > mp2->m_len) ? mp2->m_len : siz2;
987 bcopy(mtod(mp2, caddr_t), p, xfer);
998 *dposp = mtod(mp2, caddr_t);
1004 * Advance the position in the mbuf chain.
1007 nfs_adv(mdp, dposp, offs, left)
1013 register struct mbuf *m;
1026 *dposp = mtod(m, caddr_t)+offs;
1031 * Copy a string into mbufs for the hard cases...
1034 nfsm_strtmbuf(mb, bpos, cp, siz)
1040 register struct mbuf *m1 = NULL, *m2;
1041 long left, xfer, len, tlen;
1047 left = M_TRAILINGSPACE(m2);
1049 tl = ((u_int32_t *)(*bpos));
1050 *tl++ = txdr_unsigned(siz);
1052 left -= NFSX_UNSIGNED;
1053 m2->m_len += NFSX_UNSIGNED;
1055 bcopy(cp, (caddr_t) tl, left);
1062 /* Loop around adding mbufs */
1064 MGET(m1, M_TRYWAIT, MT_DATA);
1066 MCLGET(m1, M_TRYWAIT);
1067 m1->m_len = NFSMSIZ(m1);
1070 tl = mtod(m1, u_int32_t *);
1073 *tl++ = txdr_unsigned(siz);
1074 m1->m_len -= NFSX_UNSIGNED;
1075 tlen = NFSX_UNSIGNED;
1078 if (siz < m1->m_len) {
1079 len = nfsm_rndup(siz);
1082 *(tl+(xfer>>2)) = 0;
1084 xfer = len = m1->m_len;
1086 bcopy(cp, (caddr_t) tl, xfer);
1087 m1->m_len = len+tlen;
1092 *bpos = mtod(m1, caddr_t)+m1->m_len;
1097 * Called once to initialize data structures...
1101 struct vfsconf *vfsp;
1105 nfsmount_zone = zinit("NFSMOUNT", sizeof(struct nfsmount), 0, 0, 1);
1107 nfs_mount_type = vfsp->vfc_typenum;
1109 rpc_vers = txdr_unsigned(RPC_VER2);
1110 rpc_call = txdr_unsigned(RPC_CALL);
1111 rpc_reply = txdr_unsigned(RPC_REPLY);
1112 rpc_msgdenied = txdr_unsigned(RPC_MSGDENIED);
1113 rpc_msgaccepted = txdr_unsigned(RPC_MSGACCEPTED);
1114 rpc_mismatch = txdr_unsigned(RPC_MISMATCH);
1115 rpc_autherr = txdr_unsigned(RPC_AUTHERR);
1116 rpc_auth_unix = txdr_unsigned(RPCAUTH_UNIX);
1117 rpc_auth_kerb = txdr_unsigned(RPCAUTH_KERB4);
1118 nfs_prog = txdr_unsigned(NFS_PROG);
1119 nqnfs_prog = txdr_unsigned(NQNFS_PROG);
1120 nfs_true = txdr_unsigned(TRUE);
1121 nfs_false = txdr_unsigned(FALSE);
1122 nfs_xdrneg1 = txdr_unsigned(-1);
1123 nfs_ticks = (hz * NFS_TICKINTVL + 500) / 1000;
1126 /* Ensure async daemons disabled */
1127 for (i = 0; i < NFS_MAXASYNCDAEMON; i++) {
1128 nfs_iodwant[i] = (struct proc *)0;
1129 nfs_iodmount[i] = (struct nfsmount *)0;
1131 nfs_nhinit(); /* Init the nfsnode table */
1132 #ifndef NFS_NOSERVER
1133 nfsrv_init(0); /* Init server data structures */
1134 nfsrv_initcache(); /* Init the server request cache */
1138 * Initialize the nqnfs server stuff.
1140 if (nqnfsstarttime == 0) {
1141 nqnfsstarttime = boottime.tv_sec + nqsrv_maxlease
1142 + nqsrv_clockskew + nqsrv_writeslack;
1143 NQLOADNOVRAM(nqnfsstarttime);
1144 TAILQ_INIT(&nqtimerhead);
1145 nqfhhashtbl = hashinit(NQLCHSZ, M_NQLEASE, &nqfhhash);
1149 * Initialize reply list and start timer
1151 TAILQ_INIT(&nfs_reqq);
1156 * Set up lease_check and lease_updatetime so that other parts
1157 * of the system can call us, if we are loadable.
1159 #ifndef NFS_NOSERVER
1160 nfs_prev_vop_lease_check = default_vnodeop_p[VOFFSET(vop_lease)];
1161 default_vnodeop_p[VOFFSET(vop_lease)] = (vop_t *)nqnfs_vop_lease_check;
1163 nfs_prev_lease_updatetime = lease_updatetime;
1164 lease_updatetime = nfs_lease_updatetime;
1165 nfs_prev_nfssvc_sy_narg = sysent[SYS_nfssvc].sy_narg;
1166 sysent[SYS_nfssvc].sy_narg = 2;
1167 nfs_prev_nfssvc_sy_call = sysent[SYS_nfssvc].sy_call;
1168 sysent[SYS_nfssvc].sy_call = (sy_call_t *)nfssvc;
1170 nfs_pbuf_freecnt = nswbuf / 2 + 1;
1177 struct vfsconf *vfsp;
1180 untimeout(nfs_timer, (void *)NULL, nfs_timer_handle);
1181 nfs_mount_type = -1;
1182 #ifndef NFS_NOSERVER
1183 default_vnodeop_p[VOFFSET(vop_lease)] = nfs_prev_vop_lease_check;
1185 lease_updatetime = nfs_prev_lease_updatetime;
1186 sysent[SYS_nfssvc].sy_narg = nfs_prev_nfssvc_sy_narg;
1187 sysent[SYS_nfssvc].sy_call = nfs_prev_nfssvc_sy_call;
1192 * Attribute cache routines.
1193 * nfs_loadattrcache() - loads or updates the cache contents from attributes
1194 * that are on the mbuf list
1195 * nfs_getattrcache() - returns valid attributes if found in cache, returns
1200 * Load the attribute cache (that lives in the nfsnode entry) with
1201 * the values on the mbuf list and
1203 * copy the attributes to *vaper
1206 nfs_loadattrcache(vpp, mdp, dposp, vaper, dontshrink)
1210 struct vattr *vaper;
1213 register struct vnode *vp = *vpp;
1214 register struct vattr *vap;
1215 register struct nfs_fattr *fp;
1216 register struct nfsnode *np;
1217 register int32_t t1;
1219 int error = 0, rdev;
1223 struct timespec mtime;
1224 int v3 = NFS_ISV3(vp);
1227 t1 = (mtod(md, caddr_t) + md->m_len) - *dposp;
1228 if ((error = nfsm_disct(mdp, dposp, NFSX_FATTR(v3), t1, &cp2)) != 0)
1230 fp = (struct nfs_fattr *)cp2;
1232 vtyp = nfsv3tov_type(fp->fa_type);
1233 vmode = fxdr_unsigned(u_short, fp->fa_mode);
1234 rdev = makeudev(fxdr_unsigned(int, fp->fa3_rdev.specdata1),
1235 fxdr_unsigned(int, fp->fa3_rdev.specdata2));
1236 fxdr_nfsv3time(&fp->fa3_mtime, &mtime);
1238 vtyp = nfsv2tov_type(fp->fa_type);
1239 vmode = fxdr_unsigned(u_short, fp->fa_mode);
1243 * The duplicate information returned in fa_type and fa_mode
1244 * is an ambiguity in the NFS version 2 protocol.
1246 * VREG should be taken literally as a regular file. If a
1247 * server intents to return some type information differently
1248 * in the upper bits of the mode field (e.g. for sockets, or
1249 * FIFOs), NFSv2 mandates fa_type to be VNON. Anyway, we
1250 * leave the examination of the mode bits even in the VREG
1251 * case to avoid breakage for bogus servers, but we make sure
1252 * that there are actually type bits set in the upper part of
1253 * fa_mode (and failing that, trust the va_type field).
1255 * NFSv3 cleared the issue, and requires fa_mode to not
1256 * contain any type information (while also introduing sockets
1257 * and FIFOs for fa_type).
1259 if (vtyp == VNON || (vtyp == VREG && (vmode & S_IFMT) != 0))
1260 vtyp = IFTOVT(vmode);
1261 rdev = fxdr_unsigned(int32_t, fp->fa2_rdev);
1262 fxdr_nfsv2time(&fp->fa2_mtime, &mtime);
1265 * Really ugly NFSv2 kludge.
1267 if (vtyp == VCHR && rdev == 0xffffffff)
1272 * If v_type == VNON it is a new node, so fill in the v_type,
1273 * n_mtime fields. Check to see if it represents a special
1274 * device, and if so, check for a possible alias. Once the
1275 * correct vnode has been obtained, fill in the rest of the
1279 if (vp->v_type != vtyp) {
1281 if (vp->v_type == VFIFO) {
1282 vp->v_op = fifo_nfsv2nodeop_p;
1284 if (vp->v_type == VCHR || vp->v_type == VBLK) {
1285 vp->v_op = spec_nfsv2nodeop_p;
1286 vp = addaliasu(vp, rdev);
1289 np->n_mtime = mtime.tv_sec;
1292 vap->va_type = vtyp;
1293 vap->va_mode = (vmode & 07777);
1294 vap->va_rdev = rdev;
1295 vap->va_mtime = mtime;
1296 vap->va_fsid = vp->v_mount->mnt_stat.f_fsid.val[0];
1298 vap->va_nlink = fxdr_unsigned(u_short, fp->fa_nlink);
1299 vap->va_uid = fxdr_unsigned(uid_t, fp->fa_uid);
1300 vap->va_gid = fxdr_unsigned(gid_t, fp->fa_gid);
1301 vap->va_size = fxdr_hyper(&fp->fa3_size);
1302 vap->va_blocksize = NFS_FABLKSIZE;
1303 vap->va_bytes = fxdr_hyper(&fp->fa3_used);
1304 vap->va_fileid = fxdr_unsigned(int32_t,
1305 fp->fa3_fileid.nfsuquad[1]);
1306 fxdr_nfsv3time(&fp->fa3_atime, &vap->va_atime);
1307 fxdr_nfsv3time(&fp->fa3_ctime, &vap->va_ctime);
1309 vap->va_filerev = 0;
1311 vap->va_nlink = fxdr_unsigned(u_short, fp->fa_nlink);
1312 vap->va_uid = fxdr_unsigned(uid_t, fp->fa_uid);
1313 vap->va_gid = fxdr_unsigned(gid_t, fp->fa_gid);
1314 vap->va_size = fxdr_unsigned(u_int32_t, fp->fa2_size);
1315 vap->va_blocksize = fxdr_unsigned(int32_t, fp->fa2_blocksize);
1316 vap->va_bytes = (u_quad_t)fxdr_unsigned(int32_t, fp->fa2_blocks)
1318 vap->va_fileid = fxdr_unsigned(int32_t, fp->fa2_fileid);
1319 fxdr_nfsv2time(&fp->fa2_atime, &vap->va_atime);
1321 vap->va_ctime.tv_sec = fxdr_unsigned(u_int32_t,
1322 fp->fa2_ctime.nfsv2_sec);
1323 vap->va_ctime.tv_nsec = 0;
1324 vap->va_gen = fxdr_unsigned(u_int32_t,fp->fa2_ctime.nfsv2_usec);
1325 vap->va_filerev = 0;
1327 np->n_attrstamp = time_second;
1328 if (vap->va_size != np->n_size) {
1329 if (vap->va_type == VREG) {
1330 if (dontshrink && vap->va_size < np->n_size) {
1332 * We've been told not to shrink the file;
1333 * zero np->n_attrstamp to indicate that
1334 * the attributes are stale.
1336 vap->va_size = np->n_size;
1337 np->n_attrstamp = 0;
1338 } else if (np->n_flag & NMODIFIED) {
1339 if (vap->va_size < np->n_size)
1340 vap->va_size = np->n_size;
1342 np->n_size = vap->va_size;
1344 np->n_size = vap->va_size;
1346 vnode_pager_setsize(vp, np->n_size);
1348 np->n_size = vap->va_size;
1351 if (vaper != NULL) {
1352 bcopy((caddr_t)vap, (caddr_t)vaper, sizeof(*vap));
1353 if (np->n_flag & NCHG) {
1354 if (np->n_flag & NACC)
1355 vaper->va_atime = np->n_atim;
1356 if (np->n_flag & NUPD)
1357 vaper->va_mtime = np->n_mtim;
1364 #include <sys/sysctl.h>
1365 SYSCTL_DECL(_vfs_nfs);
1366 static int nfs_acdebug;
1367 SYSCTL_INT(_vfs_nfs, OID_AUTO, acdebug, CTLFLAG_RW, &nfs_acdebug, 0, "");
1371 * Check the time stamp
1372 * If the cache is valid, copy contents to *vap and return 0
1373 * otherwise return an error
1376 nfs_getattrcache(vp, vaper)
1377 register struct vnode *vp;
1378 struct vattr *vaper;
1380 register struct nfsnode *np;
1381 register struct vattr *vap;
1382 struct nfsmount *nmp;
1387 nmp = VFSTONFS(vp->v_mount);
1388 /* XXX n_mtime doesn't seem to be updated on a miss-and-reload */
1389 timeo = (time_second - np->n_mtime) / 10;
1393 printf("nfs_getattrcache: initial timeo = %d\n", timeo);
1396 if (vap->va_type == VDIR) {
1397 if ((np->n_flag & NMODIFIED) || timeo < nmp->nm_acdirmin)
1398 timeo = nmp->nm_acdirmin;
1399 else if (timeo > nmp->nm_acdirmax)
1400 timeo = nmp->nm_acdirmax;
1402 if ((np->n_flag & NMODIFIED) || timeo < nmp->nm_acregmin)
1403 timeo = nmp->nm_acregmin;
1404 else if (timeo > nmp->nm_acregmax)
1405 timeo = nmp->nm_acregmax;
1409 if (nfs_acdebug > 2)
1410 printf("acregmin %d; acregmax %d; acdirmin %d; acdirmax %d\n",
1411 nmp->nm_acregmin, nmp->nm_acregmax,
1412 nmp->nm_acdirmin, nmp->nm_acdirmax);
1415 printf("nfs_getattrcache: age = %d; final timeo = %d\n",
1416 (time_second - np->n_attrstamp), timeo);
1419 if ((time_second - np->n_attrstamp) >= timeo) {
1420 nfsstats.attrcache_misses++;
1423 nfsstats.attrcache_hits++;
1424 if (vap->va_size != np->n_size) {
1425 if (vap->va_type == VREG) {
1426 if (np->n_flag & NMODIFIED) {
1427 if (vap->va_size < np->n_size)
1428 vap->va_size = np->n_size;
1430 np->n_size = vap->va_size;
1432 np->n_size = vap->va_size;
1434 vnode_pager_setsize(vp, np->n_size);
1436 np->n_size = vap->va_size;
1439 bcopy((caddr_t)vap, (caddr_t)vaper, sizeof(struct vattr));
1440 if (np->n_flag & NCHG) {
1441 if (np->n_flag & NACC)
1442 vaper->va_atime = np->n_atim;
1443 if (np->n_flag & NUPD)
1444 vaper->va_mtime = np->n_mtim;
1449 #ifndef NFS_NOSERVER
1451 * Set up nameidata for a lookup() call and do it.
1453 * If pubflag is set, this call is done for a lookup operation on the
1454 * public filehandle. In that case we allow crossing mountpoints and
1455 * absolute pathnames. However, the caller is expected to check that
1456 * the lookup result is within the public fs, and deny access if
1459 * nfs_namei() clears out garbage fields that namei() might leave garbage.
1460 * This is mainly ni_vp and ni_dvp when an error occurs, and ni_dvp when no
1461 * error occurs but the parent was not requested.
1463 * dirp may be set whether an error is returned or not, and must be
1464 * released by the caller.
1467 nfs_namei(ndp, fhp, len, slp, nam, mdp, dposp, retdirp, p, kerbflag, pubflag)
1468 register struct nameidata *ndp;
1471 struct nfssvc_sock *slp;
1472 struct sockaddr *nam;
1475 struct vnode **retdirp;
1477 int kerbflag, pubflag;
1479 register int i, rem;
1480 register struct mbuf *md;
1481 register char *fromcp, *tocp, *cp;
1485 int error, rdonly, linklen;
1486 struct componentname *cnp = &ndp->ni_cnd;
1488 *retdirp = (struct vnode *)0;
1489 cnp->cn_pnbuf = zalloc(namei_zone);
1492 * Copy the name from the mbuf list to ndp->ni_pnbuf
1493 * and set the various ndp fields appropriately.
1496 tocp = cnp->cn_pnbuf;
1498 rem = mtod(md, caddr_t) + md->m_len - fromcp;
1499 for (i = 0; i < len; i++) {
1506 fromcp = mtod(md, caddr_t);
1509 if (*fromcp == '\0' || (!pubflag && *fromcp == '/')) {
1513 *tocp++ = *fromcp++;
1519 len = nfsm_rndup(len)-len;
1523 else if ((error = nfs_adv(mdp, dposp, len, rem)) != 0)
1528 * Extract and set starting directory.
1530 error = nfsrv_fhtovp(fhp, FALSE, &dp, ndp->ni_cnd.cn_cred, slp,
1531 nam, &rdonly, kerbflag, pubflag);
1534 if (dp->v_type != VDIR) {
1541 cnp->cn_flags |= RDONLY;
1544 * Set return directory. Reference to dp is implicitly transfered
1545 * to the returned pointer
1551 * Oh joy. For WebNFS, handle those pesky '%' escapes,
1552 * and the 'native path' indicator.
1554 cp = zalloc(namei_zone);
1555 fromcp = cnp->cn_pnbuf;
1557 if ((unsigned char)*fromcp >= WEBNFS_SPECCHAR_START) {
1558 switch ((unsigned char)*fromcp) {
1559 case WEBNFS_NATIVE_CHAR:
1561 * 'Native' path for us is the same
1562 * as a path according to the NFS spec,
1563 * just skip the escape char.
1568 * More may be added in the future, range 0x80-0xff
1572 zfree(namei_zone, cp);
1577 * Translate the '%' escapes, URL-style.
1579 while (*fromcp != '\0') {
1580 if (*fromcp == WEBNFS_ESC_CHAR) {
1581 if (fromcp[1] != '\0' && fromcp[2] != '\0') {
1583 *tocp++ = HEXSTRTOI(fromcp);
1588 zfree(namei_zone, cp);
1592 *tocp++ = *fromcp++;
1595 zfree(namei_zone, cnp->cn_pnbuf);
1599 ndp->ni_pathlen = (tocp - cnp->cn_pnbuf) + 1;
1600 ndp->ni_segflg = UIO_SYSSPACE;
1603 ndp->ni_rootdir = rootvnode;
1604 ndp->ni_loopcnt = 0;
1605 if (cnp->cn_pnbuf[0] == '/')
1608 cnp->cn_flags |= NOCROSSMOUNT;
1612 * Initialize for scan, set ni_startdir and bump ref on dp again
1613 * becuase lookup() will dereference ni_startdir.
1618 ndp->ni_startdir = dp;
1621 cnp->cn_nameptr = cnp->cn_pnbuf;
1623 * Call lookup() to do the real work. If an error occurs,
1624 * ndp->ni_vp and ni_dvp are left uninitialized or NULL and
1625 * we do not have to dereference anything before returning.
1626 * In either case ni_startdir will be dereferenced and NULLed
1629 error = lookup(ndp);
1634 * Check for encountering a symbolic link. Trivial
1635 * termination occurs if no symlink encountered.
1636 * Note: zfree is safe because error is 0, so we will
1637 * not zfree it again when we break.
1639 if ((cnp->cn_flags & ISSYMLINK) == 0) {
1640 nfsrv_object_create(ndp->ni_vp);
1641 if (cnp->cn_flags & (SAVENAME | SAVESTART))
1642 cnp->cn_flags |= HASBUF;
1644 zfree(namei_zone, cnp->cn_pnbuf);
1651 if ((cnp->cn_flags & LOCKPARENT) && ndp->ni_pathlen == 1)
1652 VOP_UNLOCK(ndp->ni_dvp, 0, p);
1658 if (ndp->ni_loopcnt++ >= MAXSYMLINKS) {
1662 if (ndp->ni_pathlen > 1)
1663 cp = zalloc(namei_zone);
1667 aiov.iov_len = MAXPATHLEN;
1668 auio.uio_iov = &aiov;
1669 auio.uio_iovcnt = 1;
1670 auio.uio_offset = 0;
1671 auio.uio_rw = UIO_READ;
1672 auio.uio_segflg = UIO_SYSSPACE;
1673 auio.uio_procp = (struct proc *)0;
1674 auio.uio_resid = MAXPATHLEN;
1675 error = VOP_READLINK(ndp->ni_vp, &auio, cnp->cn_cred);
1678 if (ndp->ni_pathlen > 1)
1679 zfree(namei_zone, cp);
1685 linklen = MAXPATHLEN - auio.uio_resid;
1690 if (linklen + ndp->ni_pathlen >= MAXPATHLEN) {
1691 error = ENAMETOOLONG;
1696 * Adjust or replace path
1698 if (ndp->ni_pathlen > 1) {
1699 bcopy(ndp->ni_next, cp + linklen, ndp->ni_pathlen);
1700 zfree(namei_zone, cnp->cn_pnbuf);
1703 cnp->cn_pnbuf[linklen] = '\0';
1704 ndp->ni_pathlen += linklen;
1707 * Cleanup refs for next loop and check if root directory
1708 * should replace current directory. Normally ni_dvp
1709 * becomes the new base directory and is cleaned up when
1710 * we loop. Explicitly null pointers after invalidation
1711 * to clarify operation.
1716 if (cnp->cn_pnbuf[0] == '/') {
1718 ndp->ni_dvp = ndp->ni_rootdir;
1721 ndp->ni_startdir = ndp->ni_dvp;
1726 * nfs_namei() guarentees that fields will not contain garbage
1727 * whether an error occurs or not. This allows the caller to track
1728 * cleanup state trivially.
1732 zfree(namei_zone, cnp->cn_pnbuf);
1735 ndp->ni_startdir = NULL;
1736 cnp->cn_flags &= ~HASBUF;
1737 } else if ((ndp->ni_cnd.cn_flags & (WANTPARENT|LOCKPARENT)) == 0) {
1744 * A fiddled version of m_adj() that ensures null fill to a long
1745 * boundary and only trims off the back end
1748 nfsm_adj(mp, len, nul)
1753 register struct mbuf *m;
1754 register int count, i;
1758 * Trim from tail. Scan the mbuf chain,
1759 * calculating its length and finding the last mbuf.
1760 * If the adjustment only affects this mbuf, then just
1761 * adjust and return. Otherwise, rescan and truncate
1762 * after the remaining size.
1768 if (m->m_next == (struct mbuf *)0)
1772 if (m->m_len > len) {
1775 cp = mtod(m, caddr_t)+m->m_len-nul;
1776 for (i = 0; i < nul; i++)
1785 * Correct length for chain is "count".
1786 * Find the mbuf with last data, adjust its length,
1787 * and toss data from remaining mbufs on chain.
1789 for (m = mp; m; m = m->m_next) {
1790 if (m->m_len >= count) {
1793 cp = mtod(m, caddr_t)+m->m_len-nul;
1794 for (i = 0; i < nul; i++)
1801 for (m = m->m_next;m;m = m->m_next)
1806 * Make these functions instead of macros, so that the kernel text size
1807 * doesn't get too big...
1810 nfsm_srvwcc(nfsd, before_ret, before_vap, after_ret, after_vap, mbp, bposp)
1811 struct nfsrv_descript *nfsd;
1813 register struct vattr *before_vap;
1815 struct vattr *after_vap;
1819 register struct mbuf *mb = *mbp, *mb2;
1820 register char *bpos = *bposp;
1821 register u_int32_t *tl;
1824 nfsm_build(tl, u_int32_t *, NFSX_UNSIGNED);
1827 nfsm_build(tl, u_int32_t *, 7 * NFSX_UNSIGNED);
1829 txdr_hyper(before_vap->va_size, tl);
1831 txdr_nfsv3time(&(before_vap->va_mtime), tl);
1833 txdr_nfsv3time(&(before_vap->va_ctime), tl);
1837 nfsm_srvpostopattr(nfsd, after_ret, after_vap, mbp, bposp);
1841 nfsm_srvpostopattr(nfsd, after_ret, after_vap, mbp, bposp)
1842 struct nfsrv_descript *nfsd;
1844 struct vattr *after_vap;
1848 register struct mbuf *mb = *mbp, *mb2;
1849 register char *bpos = *bposp;
1850 register u_int32_t *tl;
1851 register struct nfs_fattr *fp;
1854 nfsm_build(tl, u_int32_t *, NFSX_UNSIGNED);
1857 nfsm_build(tl, u_int32_t *, NFSX_UNSIGNED + NFSX_V3FATTR);
1859 fp = (struct nfs_fattr *)tl;
1860 nfsm_srvfattr(nfsd, after_vap, fp);
1867 nfsm_srvfattr(nfsd, vap, fp)
1868 register struct nfsrv_descript *nfsd;
1869 register struct vattr *vap;
1870 register struct nfs_fattr *fp;
1873 fp->fa_nlink = txdr_unsigned(vap->va_nlink);
1874 fp->fa_uid = txdr_unsigned(vap->va_uid);
1875 fp->fa_gid = txdr_unsigned(vap->va_gid);
1876 if (nfsd->nd_flag & ND_NFSV3) {
1877 fp->fa_type = vtonfsv3_type(vap->va_type);
1878 fp->fa_mode = vtonfsv3_mode(vap->va_mode);
1879 txdr_hyper(vap->va_size, &fp->fa3_size);
1880 txdr_hyper(vap->va_bytes, &fp->fa3_used);
1881 fp->fa3_rdev.specdata1 = txdr_unsigned(umajor(vap->va_rdev));
1882 fp->fa3_rdev.specdata2 = txdr_unsigned(uminor(vap->va_rdev));
1883 fp->fa3_fsid.nfsuquad[0] = 0;
1884 fp->fa3_fsid.nfsuquad[1] = txdr_unsigned(vap->va_fsid);
1885 fp->fa3_fileid.nfsuquad[0] = 0;
1886 fp->fa3_fileid.nfsuquad[1] = txdr_unsigned(vap->va_fileid);
1887 txdr_nfsv3time(&vap->va_atime, &fp->fa3_atime);
1888 txdr_nfsv3time(&vap->va_mtime, &fp->fa3_mtime);
1889 txdr_nfsv3time(&vap->va_ctime, &fp->fa3_ctime);
1891 fp->fa_type = vtonfsv2_type(vap->va_type);
1892 fp->fa_mode = vtonfsv2_mode(vap->va_type, vap->va_mode);
1893 fp->fa2_size = txdr_unsigned(vap->va_size);
1894 fp->fa2_blocksize = txdr_unsigned(vap->va_blocksize);
1895 if (vap->va_type == VFIFO)
1896 fp->fa2_rdev = 0xffffffff;
1898 fp->fa2_rdev = txdr_unsigned(vap->va_rdev);
1899 fp->fa2_blocks = txdr_unsigned(vap->va_bytes / NFS_FABLKSIZE);
1900 fp->fa2_fsid = txdr_unsigned(vap->va_fsid);
1901 fp->fa2_fileid = txdr_unsigned(vap->va_fileid);
1902 txdr_nfsv2time(&vap->va_atime, &fp->fa2_atime);
1903 txdr_nfsv2time(&vap->va_mtime, &fp->fa2_mtime);
1904 txdr_nfsv2time(&vap->va_ctime, &fp->fa2_ctime);
1909 * nfsrv_fhtovp() - convert a fh to a vnode ptr (optionally locked)
1910 * - look up fsid in mount list (if not found ret error)
1911 * - get vp and export rights by calling VFS_FHTOVP()
1912 * - if cred->cr_uid == 0 or MNT_EXPORTANON set it to credanon
1913 * - if not lockflag unlock it with VOP_UNLOCK()
1916 nfsrv_fhtovp(fhp, lockflag, vpp, cred, slp, nam, rdonlyp, kerbflag, pubflag)
1921 struct nfssvc_sock *slp;
1922 struct sockaddr *nam;
1927 struct proc *p = curproc; /* XXX */
1928 register struct mount *mp;
1930 struct ucred *credanon;
1932 #ifdef MNT_EXNORESPORT /* XXX needs mountd and /etc/exports help yet */
1933 struct sockaddr_int *saddr;
1936 *vpp = (struct vnode *)0;
1938 if (nfs_ispublicfh(fhp)) {
1939 if (!pubflag || !nfs_pub.np_valid)
1941 fhp = &nfs_pub.np_handle;
1944 mp = vfs_getvfs(&fhp->fh_fsid);
1947 error = VFS_CHECKEXP(mp, nam, &exflags, &credanon);
1950 error = VFS_FHTOVP(mp, &fhp->fh_fid, vpp);
1953 #ifdef MNT_EXNORESPORT
1954 if (!(exflags & (MNT_EXNORESPORT|MNT_EXPUBLIC))) {
1955 saddr = (struct sockaddr_in *)nam;
1956 if (saddr->sin_family == AF_INET &&
1957 ntohs(saddr->sin_port) >= IPPORT_RESERVED) {
1960 return (NFSERR_AUTHERR | AUTH_TOOWEAK);
1965 * Check/setup credentials.
1967 if (exflags & MNT_EXKERB) {
1971 return (NFSERR_AUTHERR | AUTH_TOOWEAK);
1973 } else if (kerbflag) {
1976 return (NFSERR_AUTHERR | AUTH_TOOWEAK);
1977 } else if (cred->cr_uid == 0 || (exflags & MNT_EXPORTANON)) {
1978 cred->cr_uid = credanon->cr_uid;
1979 for (i = 0; i < credanon->cr_ngroups && i < NGROUPS; i++)
1980 cred->cr_groups[i] = credanon->cr_groups[i];
1981 cred->cr_ngroups = i;
1983 if (exflags & MNT_EXRDONLY)
1988 nfsrv_object_create(*vpp);
1991 VOP_UNLOCK(*vpp, 0, p);
1997 * WebNFS: check if a filehandle is a public filehandle. For v3, this
1998 * means a length of 0, for v2 it means all zeroes. nfsm_srvmtofh has
1999 * transformed this to all zeroes in both cases, so check for it.
2005 char *cp = (char *)fhp;
2008 for (i = 0; i < NFSX_V3FH; i++)
2014 #endif /* NFS_NOSERVER */
2016 * This function compares two net addresses by family and returns TRUE
2017 * if they are the same host.
2018 * If there is any doubt, return FALSE.
2019 * The AF_INET family is handled as a special case so that address mbufs
2020 * don't need to be saved to store "struct in_addr", which is only 4 bytes.
2023 netaddr_match(family, haddr, nam)
2025 union nethostaddr *haddr;
2026 struct sockaddr *nam;
2028 register struct sockaddr_in *inetaddr;
2032 inetaddr = (struct sockaddr_in *)nam;
2033 if (inetaddr->sin_family == AF_INET &&
2034 inetaddr->sin_addr.s_addr == haddr->had_inetaddr)
2043 static nfsuint64 nfs_nullcookie = { { 0, 0 } };
2045 * This function finds the directory cookie that corresponds to the
2046 * logical byte offset given.
2049 nfs_getcookie(np, off, add)
2050 register struct nfsnode *np;
2054 register struct nfsdmap *dp, *dp2;
2057 pos = (uoff_t)off / NFS_DIRBLKSIZ;
2058 if (pos == 0 || off < 0) {
2061 panic("nfs getcookie add at <= 0");
2063 return (&nfs_nullcookie);
2066 dp = np->n_cookies.lh_first;
2069 MALLOC(dp, struct nfsdmap *, sizeof (struct nfsdmap),
2070 M_NFSDIROFF, M_WAITOK);
2071 dp->ndm_eocookie = 0;
2072 LIST_INSERT_HEAD(&np->n_cookies, dp, ndm_list);
2074 return ((nfsuint64 *)0);
2076 while (pos >= NFSNUMCOOKIES) {
2077 pos -= NFSNUMCOOKIES;
2078 if (dp->ndm_list.le_next) {
2079 if (!add && dp->ndm_eocookie < NFSNUMCOOKIES &&
2080 pos >= dp->ndm_eocookie)
2081 return ((nfsuint64 *)0);
2082 dp = dp->ndm_list.le_next;
2084 MALLOC(dp2, struct nfsdmap *, sizeof (struct nfsdmap),
2085 M_NFSDIROFF, M_WAITOK);
2086 dp2->ndm_eocookie = 0;
2087 LIST_INSERT_AFTER(dp, dp2, ndm_list);
2090 return ((nfsuint64 *)0);
2092 if (pos >= dp->ndm_eocookie) {
2094 dp->ndm_eocookie = pos + 1;
2096 return ((nfsuint64 *)0);
2098 return (&dp->ndm_cookies[pos]);
2102 * Invalidate cached directory information, except for the actual directory
2103 * blocks (which are invalidated separately).
2104 * Done mainly to avoid the use of stale offset cookies.
2108 register struct vnode *vp;
2110 register struct nfsnode *np = VTONFS(vp);
2113 if (vp->v_type != VDIR)
2114 panic("nfs: invaldir not dir");
2116 np->n_direofoffset = 0;
2117 np->n_cookieverf.nfsuquad[0] = 0;
2118 np->n_cookieverf.nfsuquad[1] = 0;
2119 if (np->n_cookies.lh_first)
2120 np->n_cookies.lh_first->ndm_eocookie = 0;
2124 * The write verifier has changed (probably due to a server reboot), so all
2125 * B_NEEDCOMMIT blocks will have to be written again. Since they are on the
2126 * dirty block list as B_DELWRI, all this takes is clearing the B_NEEDCOMMIT
2127 * and B_CLUSTEROK flags. Once done the new write verifier can be set for the
2130 * B_CLUSTEROK must be cleared along with B_NEEDCOMMIT because stage 1 data
2131 * writes are not clusterable.
2137 register struct vnode *vp, *nvp;
2138 register struct buf *bp, *nbp;
2142 mtx_assert(&Giant, MA_OWNED);
2143 mtx_assert(&vm_mtx, MA_NOTOWNED);
2145 for (vp = mp->mnt_vnodelist.lh_first; vp; vp = nvp) {
2146 if (vp->v_mount != mp) /* Paranoia */
2148 nvp = vp->v_mntvnodes.le_next;
2149 for (bp = TAILQ_FIRST(&vp->v_dirtyblkhd); bp; bp = nbp) {
2150 nbp = TAILQ_NEXT(bp, b_vnbufs);
2151 if (BUF_REFCNT(bp) == 0 &&
2152 (bp->b_flags & (B_DELWRI | B_NEEDCOMMIT))
2153 == (B_DELWRI | B_NEEDCOMMIT))
2154 bp->b_flags &= ~(B_NEEDCOMMIT | B_CLUSTEROK);
2160 #ifndef NFS_NOSERVER
2162 * Map errnos to NFS error numbers. For Version 3 also filter out error
2163 * numbers not specified for the associated procedure.
2166 nfsrv_errmap(nd, err)
2167 struct nfsrv_descript *nd;
2170 register short *defaulterrp, *errp;
2172 if (nd->nd_flag & ND_NFSV3) {
2173 if (nd->nd_procnum <= NFSPROC_COMMIT) {
2174 errp = defaulterrp = nfsrv_v3errmap[nd->nd_procnum];
2178 else if (*errp > err)
2181 return ((int)*defaulterrp);
2183 return (err & 0xffff);
2186 return ((int)nfsrv_v2errmap[err - 1]);
2191 nfsrv_object_create(vp)
2195 if (vp == NULL || vp->v_type != VREG)
2197 return (vfs_object_create(vp, curproc,
2198 curproc ? curproc->p_ucred : NULL));
2202 * Sort the group list in increasing numerical order.
2203 * (Insertion sort by Chris Torek, who was grossed out by the bubble sort
2204 * that used to be here.)
2207 nfsrvw_sort(list, num)
2208 register gid_t *list;
2214 /* Insertion sort. */
2215 for (i = 1; i < num; i++) {
2217 /* find correct slot for value v, moving others up */
2218 for (j = i; --j >= 0 && v < list[j];)
2219 list[j + 1] = list[j];
2225 * copy credentials making sure that the result can be compared with bcmp().
2228 nfsrv_setcred(incred, outcred)
2229 register struct ucred *incred, *outcred;
2233 bzero((caddr_t)outcred, sizeof (struct ucred));
2234 outcred->cr_ref = 1;
2235 outcred->cr_uid = incred->cr_uid;
2236 outcred->cr_ngroups = incred->cr_ngroups;
2237 for (i = 0; i < incred->cr_ngroups; i++)
2238 outcred->cr_groups[i] = incred->cr_groups[i];
2239 nfsrvw_sort(outcred->cr_groups, outcred->cr_ngroups);
2241 #endif /* NFS_NOSERVER */