3437 lines
85 KiB
C
3437 lines
85 KiB
C
/*
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* Copyright (c) 1989, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* Rick Macklem at The University of Guelph.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)nfs_serv.c 8.3 (Berkeley) 1/12/94
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* $Id: nfs_serv.c,v 1.28 1996/01/13 23:27:48 phk Exp $
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*/
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/*
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* nfs version 2 and 3 server calls to vnode ops
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* - these routines generally have 3 phases
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* 1 - break down and validate rpc request in mbuf list
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* 2 - do the vnode ops for the request
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* (surprisingly ?? many are very similar to syscalls in vfs_syscalls.c)
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* 3 - build the rpc reply in an mbuf list
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* nb:
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* - do not mix the phases, since the nfsm_?? macros can return failures
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* on a bad rpc or similar and do not do any vrele() or vput()'s
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*
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* - the nfsm_reply() macro generates an nfs rpc reply with the nfs
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* error number iff error != 0 whereas
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* returning an error from the server function implies a fatal error
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* such as a badly constructed rpc request that should be dropped without
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* a reply.
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* For Version 3, nfsm_reply() does not return for the error case, since
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* most version 3 rpcs return more than the status for error cases.
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*/
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/proc.h>
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#include <sys/file.h>
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#include <sys/namei.h>
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#include <sys/vnode.h>
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#include <sys/mount.h>
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#include <sys/socket.h>
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#include <sys/socketvar.h>
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#include <sys/mbuf.h>
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#include <sys/dirent.h>
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#include <sys/stat.h>
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#include <sys/kernel.h>
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#include <sys/sysctl.h>
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#include <ufs/ufs/dir.h>
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#include <vm/vm.h>
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#include <vm/vm_param.h>
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#include <vm/vm_object.h>
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#include <vm/vm_extern.h>
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#include <nfs/nfsproto.h>
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#include <nfs/rpcv2.h>
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#include <nfs/nfs.h>
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#include <nfs/xdr_subs.h>
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#include <nfs/nfsm_subs.h>
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#include <nfs/nqnfs.h>
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nfstype nfsv3_type[9] = { NFNON, NFREG, NFDIR, NFBLK, NFCHR, NFLNK, NFSOCK,
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NFFIFO, NFNON };
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#ifndef NFS_NOSERVER
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nfstype nfsv2_type[9] = { NFNON, NFREG, NFDIR, NFBLK, NFCHR, NFLNK, NFNON,
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NFCHR, NFNON };
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/* Global vars */
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extern u_long nfs_xdrneg1;
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extern u_long nfs_false, nfs_true;
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extern enum vtype nv3tov_type[8];
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extern struct nfsstats nfsstats;
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int nfsrvw_procrastinate = NFS_GATHERDELAY * 1000;
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int nfs_async;
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SYSCTL_INT(_vfs_nfs, OID_AUTO, async, CTLFLAG_RW, &nfs_async, 0, "");
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static int nfsrv_access __P((struct vnode *,int,struct ucred *,int,
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struct proc *));
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static void nfsrvw_coalesce __P((struct nfsrv_descript *,
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struct nfsrv_descript *));
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/*
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* nfs v3 access service
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*/
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int
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nfsrv3_access(nfsd, slp, procp, mrq)
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struct nfsrv_descript *nfsd;
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struct nfssvc_sock *slp;
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struct proc *procp;
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struct mbuf **mrq;
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{
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struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
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struct mbuf *nam = nfsd->nd_nam;
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caddr_t dpos = nfsd->nd_dpos;
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struct ucred *cred = &nfsd->nd_cr;
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struct vnode *vp;
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nfsfh_t nfh;
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fhandle_t *fhp;
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register u_long *tl;
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register long t1;
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caddr_t bpos;
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int error = 0, rdonly, cache, getret;
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char *cp2;
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struct mbuf *mb, *mreq, *mb2;
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struct vattr vattr, *vap = &vattr;
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u_long testmode, nfsmode;
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u_quad_t frev;
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#ifndef nolint
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cache = 0;
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#endif
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fhp = &nfh.fh_generic;
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nfsm_srvmtofh(fhp);
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nfsm_dissect(tl, u_long *, NFSX_UNSIGNED);
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if (error = nfsrv_fhtovp(fhp, 1, &vp, cred, slp, nam,
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&rdonly, (nfsd->nd_flag & ND_KERBAUTH))) {
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nfsm_reply(NFSX_UNSIGNED);
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nfsm_srvpostop_attr(1, (struct vattr *)0);
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return (0);
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}
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nfsmode = fxdr_unsigned(u_long, *tl);
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if ((nfsmode & NFSV3ACCESS_READ) &&
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nfsrv_access(vp, VREAD, cred, rdonly, procp))
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nfsmode &= ~NFSV3ACCESS_READ;
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if (vp->v_type == VDIR)
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testmode = (NFSV3ACCESS_MODIFY | NFSV3ACCESS_EXTEND |
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NFSV3ACCESS_DELETE);
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else
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testmode = (NFSV3ACCESS_MODIFY | NFSV3ACCESS_EXTEND);
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if ((nfsmode & testmode) &&
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nfsrv_access(vp, VWRITE, cred, rdonly, procp))
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nfsmode &= ~testmode;
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if (vp->v_type == VDIR)
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testmode = NFSV3ACCESS_LOOKUP;
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else
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testmode = NFSV3ACCESS_EXECUTE;
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if ((nfsmode & testmode) &&
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nfsrv_access(vp, VEXEC, cred, rdonly, procp))
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nfsmode &= ~testmode;
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getret = VOP_GETATTR(vp, vap, cred, procp);
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nfsrv_vput(vp);
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nfsm_reply(NFSX_POSTOPATTR(1) + NFSX_UNSIGNED);
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nfsm_srvpostop_attr(getret, vap);
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nfsm_build(tl, u_long *, NFSX_UNSIGNED);
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*tl = txdr_unsigned(nfsmode);
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nfsm_srvdone;
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}
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/*
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* nfs getattr service
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*/
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int
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nfsrv_getattr(nfsd, slp, procp, mrq)
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struct nfsrv_descript *nfsd;
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struct nfssvc_sock *slp;
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struct proc *procp;
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struct mbuf **mrq;
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{
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struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
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struct mbuf *nam = nfsd->nd_nam;
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caddr_t dpos = nfsd->nd_dpos;
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struct ucred *cred = &nfsd->nd_cr;
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register struct nfs_fattr *fp;
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struct vattr va;
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register struct vattr *vap = &va;
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struct vnode *vp;
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nfsfh_t nfh;
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fhandle_t *fhp;
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register u_long *tl;
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register long t1;
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caddr_t bpos;
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int error = 0, rdonly, cache;
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char *cp2;
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struct mbuf *mb, *mb2, *mreq;
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u_quad_t frev;
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fhp = &nfh.fh_generic;
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nfsm_srvmtofh(fhp);
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if (error = nfsrv_fhtovp(fhp, 1, &vp, cred, slp, nam,
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&rdonly, (nfsd->nd_flag & ND_KERBAUTH))) {
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nfsm_reply(0);
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return (0);
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}
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nqsrv_getl(vp, ND_READ);
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error = VOP_GETATTR(vp, vap, cred, procp);
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nfsrv_vput(vp);
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nfsm_reply(NFSX_FATTR(nfsd->nd_flag & ND_NFSV3));
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if (error)
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return (0);
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nfsm_build(fp, struct nfs_fattr *, NFSX_FATTR(nfsd->nd_flag & ND_NFSV3));
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nfsm_srvfillattr(vap, fp);
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nfsm_srvdone;
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}
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/*
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* nfs setattr service
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*/
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int
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nfsrv_setattr(nfsd, slp, procp, mrq)
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struct nfsrv_descript *nfsd;
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struct nfssvc_sock *slp;
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struct proc *procp;
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struct mbuf **mrq;
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{
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struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
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struct mbuf *nam = nfsd->nd_nam;
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caddr_t dpos = nfsd->nd_dpos;
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struct ucred *cred = &nfsd->nd_cr;
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struct vattr va, preat;
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register struct vattr *vap = &va;
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register struct nfsv2_sattr *sp;
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register struct nfs_fattr *fp;
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struct vnode *vp;
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nfsfh_t nfh;
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fhandle_t *fhp;
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register u_long *tl;
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register long t1;
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caddr_t bpos;
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int error = 0, rdonly, cache, preat_ret = 1, postat_ret = 1;
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int v3 = (nfsd->nd_flag & ND_NFSV3), gcheck = 0;
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char *cp2;
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struct mbuf *mb, *mb2, *mreq;
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u_quad_t frev;
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struct timespec guard;
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fhp = &nfh.fh_generic;
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nfsm_srvmtofh(fhp);
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VATTR_NULL(vap);
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if (v3) {
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nfsm_srvsattr(vap);
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nfsm_dissect(tl, u_long *, NFSX_UNSIGNED);
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gcheck = fxdr_unsigned(int, *tl);
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if (gcheck) {
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nfsm_dissect(tl, u_long *, 2 * NFSX_UNSIGNED);
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fxdr_nfsv3time(tl, &guard);
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}
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} else {
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nfsm_dissect(sp, struct nfsv2_sattr *, NFSX_V2SATTR);
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/*
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* Nah nah nah nah na nah
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* There is a bug in the Sun client that puts 0xffff in the mode
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* field of sattr when it should put in 0xffffffff. The u_short
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* doesn't sign extend.
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* --> check the low order 2 bytes for 0xffff
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*/
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if ((fxdr_unsigned(int, sp->sa_mode) & 0xffff) != 0xffff)
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vap->va_mode = nfstov_mode(sp->sa_mode);
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if (sp->sa_uid != nfs_xdrneg1)
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vap->va_uid = fxdr_unsigned(uid_t, sp->sa_uid);
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if (sp->sa_gid != nfs_xdrneg1)
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vap->va_gid = fxdr_unsigned(gid_t, sp->sa_gid);
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if (sp->sa_size != nfs_xdrneg1)
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vap->va_size = fxdr_unsigned(u_quad_t, sp->sa_size);
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if (sp->sa_atime.nfsv2_sec != nfs_xdrneg1) {
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#ifdef notyet
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fxdr_nfsv2time(&sp->sa_atime, &vap->va_atime);
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#else
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vap->va_atime.ts_sec =
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fxdr_unsigned(long, sp->sa_atime.nfsv2_sec);
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vap->va_atime.ts_nsec = 0;
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#endif
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}
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if (sp->sa_mtime.nfsv2_sec != nfs_xdrneg1)
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fxdr_nfsv2time(&sp->sa_mtime, &vap->va_mtime);
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}
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/*
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* Now that we have all the fields, lets do it.
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*/
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if (error = nfsrv_fhtovp(fhp, 1, &vp, cred, slp, nam,
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&rdonly, (nfsd->nd_flag & ND_KERBAUTH))) {
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nfsm_reply(2 * NFSX_UNSIGNED);
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nfsm_srvwcc_data(preat_ret, &preat, postat_ret, vap);
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return (0);
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}
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nqsrv_getl(vp, ND_WRITE);
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if (v3) {
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error = preat_ret = VOP_GETATTR(vp, &preat, cred, procp);
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if (!error && gcheck &&
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(preat.va_ctime.ts_sec != guard.ts_sec ||
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preat.va_ctime.ts_nsec != guard.ts_nsec))
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error = NFSERR_NOT_SYNC;
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if (error) {
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nfsrv_vput(vp);
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nfsm_reply(NFSX_WCCDATA(v3));
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nfsm_srvwcc_data(preat_ret, &preat, postat_ret, vap);
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return (0);
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}
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}
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/*
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* If the size is being changed write acces is required, otherwise
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* just check for a read only file system.
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*/
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if (vap->va_size == ((u_quad_t)((quad_t) -1))) {
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if (rdonly || (vp->v_mount->mnt_flag & MNT_RDONLY)) {
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error = EROFS;
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goto out;
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}
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} else {
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if (vp->v_type == VDIR) {
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error = EISDIR;
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goto out;
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} else if (error = nfsrv_access(vp, VWRITE, cred, rdonly,
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procp))
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goto out;
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}
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error = VOP_SETATTR(vp, vap, cred, procp);
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postat_ret = VOP_GETATTR(vp, vap, cred, procp);
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if (!error)
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error = postat_ret;
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out:
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nfsrv_vput(vp);
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nfsm_reply(NFSX_WCCORFATTR(v3));
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if (v3) {
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nfsm_srvwcc_data(preat_ret, &preat, postat_ret, vap);
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return (0);
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} else {
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nfsm_build(fp, struct nfs_fattr *, NFSX_V2FATTR);
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nfsm_srvfillattr(vap, fp);
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}
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nfsm_srvdone;
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}
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/*
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* nfs lookup rpc
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*/
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int
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nfsrv_lookup(nfsd, slp, procp, mrq)
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struct nfsrv_descript *nfsd;
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struct nfssvc_sock *slp;
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struct proc *procp;
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struct mbuf **mrq;
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{
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struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
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struct mbuf *nam = nfsd->nd_nam;
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caddr_t dpos = nfsd->nd_dpos;
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struct ucred *cred = &nfsd->nd_cr;
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register struct nfs_fattr *fp;
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struct nameidata nd;
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struct vnode *vp, *dirp;
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nfsfh_t nfh;
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fhandle_t *fhp;
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register caddr_t cp;
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register u_long *tl;
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register long t1;
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caddr_t bpos;
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int error = 0, cache, len, dirattr_ret = 1;
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int v3 = (nfsd->nd_flag & ND_NFSV3);
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char *cp2;
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struct mbuf *mb, *mb2, *mreq;
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struct vattr va, dirattr, *vap = &va;
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u_quad_t frev;
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fhp = &nfh.fh_generic;
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nfsm_srvmtofh(fhp);
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nfsm_srvnamesiz(len);
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nd.ni_cnd.cn_cred = cred;
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nd.ni_cnd.cn_nameiop = LOOKUP;
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nd.ni_cnd.cn_flags = LOCKLEAF | SAVESTART;
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error = nfs_namei(&nd, fhp, len, slp, nam, &md, &dpos,
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&dirp, procp, (nfsd->nd_flag & ND_KERBAUTH));
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if (dirp) {
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if (v3)
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dirattr_ret = VOP_GETATTR(dirp, &dirattr, cred,
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procp);
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nfsrv_vrele(dirp);
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}
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if (error) {
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nfsm_reply(NFSX_POSTOPATTR(v3));
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nfsm_srvpostop_attr(dirattr_ret, &dirattr);
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return (0);
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}
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nqsrv_getl(nd.ni_startdir, ND_READ);
|
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nfsrv_vrele(nd.ni_startdir);
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FREE(nd.ni_cnd.cn_pnbuf, M_NAMEI);
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vp = nd.ni_vp;
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bzero((caddr_t)fhp, sizeof(nfh));
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fhp->fh_fsid = vp->v_mount->mnt_stat.f_fsid;
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error = VFS_VPTOFH(vp, &fhp->fh_fid);
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if (!error)
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error = VOP_GETATTR(vp, vap, cred, procp);
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nfsrv_vput(vp);
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nfsm_reply(NFSX_SRVFH(v3) + NFSX_POSTOPORFATTR(v3) + NFSX_POSTOPATTR(v3));
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if (error) {
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nfsm_srvpostop_attr(dirattr_ret, &dirattr);
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return (0);
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}
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nfsm_srvfhtom(fhp, v3);
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if (v3) {
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nfsm_srvpostop_attr(0, vap);
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nfsm_srvpostop_attr(dirattr_ret, &dirattr);
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} else {
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nfsm_build(fp, struct nfs_fattr *, NFSX_V2FATTR);
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nfsm_srvfillattr(vap, fp);
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}
|
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nfsm_srvdone;
|
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}
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|
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/*
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* nfs readlink service
|
|
*/
|
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int
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nfsrv_readlink(nfsd, slp, procp, mrq)
|
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struct nfsrv_descript *nfsd;
|
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struct nfssvc_sock *slp;
|
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struct proc *procp;
|
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struct mbuf **mrq;
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{
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struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
|
|
struct mbuf *nam = nfsd->nd_nam;
|
|
caddr_t dpos = nfsd->nd_dpos;
|
|
struct ucred *cred = &nfsd->nd_cr;
|
|
struct iovec iv[(NFS_MAXPATHLEN+MLEN-1)/MLEN];
|
|
register struct iovec *ivp = iv;
|
|
register struct mbuf *mp;
|
|
register u_long *tl;
|
|
register long t1;
|
|
caddr_t bpos;
|
|
int error = 0, rdonly, cache, i, tlen, len, getret;
|
|
int v3 = (nfsd->nd_flag & ND_NFSV3);
|
|
char *cp2;
|
|
struct mbuf *mb, *mb2, *mp2, *mp3, *mreq;
|
|
struct vnode *vp;
|
|
struct vattr attr;
|
|
nfsfh_t nfh;
|
|
fhandle_t *fhp;
|
|
struct uio io, *uiop = &io;
|
|
u_quad_t frev;
|
|
|
|
#ifndef nolint
|
|
mp2 = mp3 = (struct mbuf *)0;
|
|
#endif
|
|
fhp = &nfh.fh_generic;
|
|
nfsm_srvmtofh(fhp);
|
|
len = 0;
|
|
i = 0;
|
|
while (len < NFS_MAXPATHLEN) {
|
|
MGET(mp, M_WAIT, MT_DATA);
|
|
MCLGET(mp, M_WAIT);
|
|
mp->m_len = NFSMSIZ(mp);
|
|
if (len == 0)
|
|
mp3 = mp2 = mp;
|
|
else {
|
|
mp2->m_next = mp;
|
|
mp2 = mp;
|
|
}
|
|
if ((len+mp->m_len) > NFS_MAXPATHLEN) {
|
|
mp->m_len = NFS_MAXPATHLEN-len;
|
|
len = NFS_MAXPATHLEN;
|
|
} else
|
|
len += mp->m_len;
|
|
ivp->iov_base = mtod(mp, caddr_t);
|
|
ivp->iov_len = mp->m_len;
|
|
i++;
|
|
ivp++;
|
|
}
|
|
uiop->uio_iov = iv;
|
|
uiop->uio_iovcnt = i;
|
|
uiop->uio_offset = 0;
|
|
uiop->uio_resid = len;
|
|
uiop->uio_rw = UIO_READ;
|
|
uiop->uio_segflg = UIO_SYSSPACE;
|
|
uiop->uio_procp = (struct proc *)0;
|
|
if (error = nfsrv_fhtovp(fhp, 1, &vp, cred, slp, nam,
|
|
&rdonly, (nfsd->nd_flag & ND_KERBAUTH))) {
|
|
m_freem(mp3);
|
|
nfsm_reply(2 * NFSX_UNSIGNED);
|
|
nfsm_srvpostop_attr(1, (struct vattr *)0);
|
|
return (0);
|
|
}
|
|
if (vp->v_type != VLNK) {
|
|
if (v3)
|
|
error = EINVAL;
|
|
else
|
|
error = ENXIO;
|
|
goto out;
|
|
}
|
|
nqsrv_getl(vp, ND_READ);
|
|
error = VOP_READLINK(vp, uiop, cred);
|
|
out:
|
|
getret = VOP_GETATTR(vp, &attr, cred, procp);
|
|
nfsrv_vput(vp);
|
|
if (error)
|
|
m_freem(mp3);
|
|
nfsm_reply(NFSX_POSTOPATTR(v3) + NFSX_UNSIGNED);
|
|
if (v3) {
|
|
nfsm_srvpostop_attr(getret, &attr);
|
|
if (error)
|
|
return (0);
|
|
}
|
|
if (uiop->uio_resid > 0) {
|
|
len -= uiop->uio_resid;
|
|
tlen = nfsm_rndup(len);
|
|
nfsm_adj(mp3, NFS_MAXPATHLEN-tlen, tlen-len);
|
|
}
|
|
nfsm_build(tl, u_long *, NFSX_UNSIGNED);
|
|
*tl = txdr_unsigned(len);
|
|
mb->m_next = mp3;
|
|
nfsm_srvdone;
|
|
}
|
|
|
|
/*
|
|
* nfs read service
|
|
*/
|
|
int
|
|
nfsrv_read(nfsd, slp, procp, mrq)
|
|
struct nfsrv_descript *nfsd;
|
|
struct nfssvc_sock *slp;
|
|
struct proc *procp;
|
|
struct mbuf **mrq;
|
|
{
|
|
struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
|
|
struct mbuf *nam = nfsd->nd_nam;
|
|
caddr_t dpos = nfsd->nd_dpos;
|
|
struct ucred *cred = &nfsd->nd_cr;
|
|
register struct iovec *iv;
|
|
struct iovec *iv2;
|
|
register struct mbuf *m;
|
|
register struct nfs_fattr *fp;
|
|
register u_long *tl;
|
|
register long t1;
|
|
register int i;
|
|
caddr_t bpos;
|
|
int error = 0, rdonly, cache, cnt, len, left, siz, tlen, getret;
|
|
int v3 = (nfsd->nd_flag & ND_NFSV3), reqlen;
|
|
char *cp2;
|
|
struct mbuf *mb, *mb2, *mreq;
|
|
struct mbuf *m2;
|
|
struct vnode *vp;
|
|
nfsfh_t nfh;
|
|
fhandle_t *fhp;
|
|
struct uio io, *uiop = &io;
|
|
struct vattr va, *vap = &va;
|
|
off_t off;
|
|
u_quad_t frev;
|
|
|
|
fhp = &nfh.fh_generic;
|
|
nfsm_srvmtofh(fhp);
|
|
if (v3) {
|
|
nfsm_dissect(tl, u_long *, 2 * NFSX_UNSIGNED);
|
|
fxdr_hyper(tl, &off);
|
|
} else {
|
|
nfsm_dissect(tl, u_long *, NFSX_UNSIGNED);
|
|
off = (off_t)fxdr_unsigned(u_long, *tl);
|
|
}
|
|
nfsm_srvstrsiz(reqlen, NFS_SRVMAXDATA(nfsd));
|
|
if (error = nfsrv_fhtovp(fhp, 1, &vp, cred, slp, nam,
|
|
&rdonly, (nfsd->nd_flag & ND_KERBAUTH))) {
|
|
nfsm_reply(2 * NFSX_UNSIGNED);
|
|
nfsm_srvpostop_attr(1, (struct vattr *)0);
|
|
return (0);
|
|
}
|
|
if (vp->v_type != VREG) {
|
|
if (v3)
|
|
error = EINVAL;
|
|
else
|
|
error = (vp->v_type == VDIR) ? EISDIR : EACCES;
|
|
}
|
|
if (!error) {
|
|
nqsrv_getl(vp, ND_READ);
|
|
if (error = nfsrv_access(vp, VREAD, cred, rdonly, procp))
|
|
error = nfsrv_access(vp, VEXEC, cred, rdonly, procp);
|
|
}
|
|
getret = VOP_GETATTR(vp, vap, cred, procp);
|
|
if (!error)
|
|
error = getret;
|
|
if (error) {
|
|
nfsrv_vput(vp);
|
|
nfsm_reply(NFSX_POSTOPATTR(v3));
|
|
nfsm_srvpostop_attr(getret, vap);
|
|
return (0);
|
|
}
|
|
if (off >= vap->va_size)
|
|
cnt = 0;
|
|
else if ((off + reqlen) > vap->va_size)
|
|
cnt = nfsm_rndup(vap->va_size - off);
|
|
else
|
|
cnt = reqlen;
|
|
nfsm_reply(NFSX_POSTOPORFATTR(v3) + 3 * NFSX_UNSIGNED+nfsm_rndup(cnt));
|
|
if (v3) {
|
|
nfsm_build(tl, u_long *, NFSX_V3FATTR + 4 * NFSX_UNSIGNED);
|
|
*tl++ = nfs_true;
|
|
fp = (struct nfs_fattr *)tl;
|
|
tl += (NFSX_V3FATTR / sizeof (u_long));
|
|
} else {
|
|
nfsm_build(tl, u_long *, NFSX_V2FATTR + NFSX_UNSIGNED);
|
|
fp = (struct nfs_fattr *)tl;
|
|
tl += (NFSX_V2FATTR / sizeof (u_long));
|
|
}
|
|
len = left = cnt;
|
|
if (cnt > 0) {
|
|
/*
|
|
* Generate the mbuf list with the uio_iov ref. to it.
|
|
*/
|
|
i = 0;
|
|
m = m2 = mb;
|
|
while (left > 0) {
|
|
siz = min(M_TRAILINGSPACE(m), left);
|
|
if (siz > 0) {
|
|
left -= siz;
|
|
i++;
|
|
}
|
|
if (left > 0) {
|
|
MGET(m, M_WAIT, MT_DATA);
|
|
MCLGET(m, M_WAIT);
|
|
m->m_len = 0;
|
|
m2->m_next = m;
|
|
m2 = m;
|
|
}
|
|
}
|
|
MALLOC(iv, struct iovec *, i * sizeof (struct iovec),
|
|
M_TEMP, M_WAITOK);
|
|
uiop->uio_iov = iv2 = iv;
|
|
m = mb;
|
|
left = cnt;
|
|
i = 0;
|
|
while (left > 0) {
|
|
if (m == NULL)
|
|
panic("nfsrv_read iov");
|
|
siz = min(M_TRAILINGSPACE(m), left);
|
|
if (siz > 0) {
|
|
iv->iov_base = mtod(m, caddr_t) + m->m_len;
|
|
iv->iov_len = siz;
|
|
m->m_len += siz;
|
|
left -= siz;
|
|
iv++;
|
|
i++;
|
|
}
|
|
m = m->m_next;
|
|
}
|
|
uiop->uio_iovcnt = i;
|
|
uiop->uio_offset = off;
|
|
uiop->uio_resid = cnt;
|
|
uiop->uio_rw = UIO_READ;
|
|
uiop->uio_segflg = UIO_SYSSPACE;
|
|
error = VOP_READ(vp, uiop, IO_NODELOCKED, cred);
|
|
off = uiop->uio_offset;
|
|
FREE((caddr_t)iv2, M_TEMP);
|
|
if (error || (getret = VOP_GETATTR(vp, vap, cred, procp))) {
|
|
if (!error)
|
|
error = getret;
|
|
m_freem(mreq);
|
|
nfsrv_vput(vp);
|
|
nfsm_reply(NFSX_POSTOPATTR(v3));
|
|
nfsm_srvpostop_attr(getret, vap);
|
|
return (0);
|
|
}
|
|
} else
|
|
uiop->uio_resid = 0;
|
|
nfsrv_vput(vp);
|
|
nfsm_srvfillattr(vap, fp);
|
|
len -= uiop->uio_resid;
|
|
tlen = nfsm_rndup(len);
|
|
if (cnt != tlen || tlen != len)
|
|
nfsm_adj(mb, cnt - tlen, tlen - len);
|
|
if (v3) {
|
|
*tl++ = txdr_unsigned(len);
|
|
if (len < reqlen)
|
|
*tl++ = nfs_true;
|
|
else
|
|
*tl++ = nfs_false;
|
|
}
|
|
*tl = txdr_unsigned(len);
|
|
nfsm_srvdone;
|
|
}
|
|
|
|
/*
|
|
* nfs write service
|
|
*/
|
|
int
|
|
nfsrv_write(nfsd, slp, procp, mrq)
|
|
struct nfsrv_descript *nfsd;
|
|
struct nfssvc_sock *slp;
|
|
struct proc *procp;
|
|
struct mbuf **mrq;
|
|
{
|
|
struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
|
|
struct mbuf *nam = nfsd->nd_nam;
|
|
caddr_t dpos = nfsd->nd_dpos;
|
|
struct ucred *cred = &nfsd->nd_cr;
|
|
register struct iovec *ivp;
|
|
register int i, cnt;
|
|
register struct mbuf *mp;
|
|
register struct nfs_fattr *fp;
|
|
struct iovec *iv;
|
|
struct vattr va, forat;
|
|
register struct vattr *vap = &va;
|
|
register u_long *tl;
|
|
register long t1;
|
|
caddr_t bpos;
|
|
int error = 0, rdonly, cache, len, forat_ret = 1;
|
|
int ioflags, aftat_ret = 1, retlen, zeroing, adjust;
|
|
int stable = NFSV3WRITE_FILESYNC;
|
|
int v3 = (nfsd->nd_flag & ND_NFSV3);
|
|
char *cp2;
|
|
struct mbuf *mb, *mb2, *mreq;
|
|
struct vnode *vp;
|
|
nfsfh_t nfh;
|
|
fhandle_t *fhp;
|
|
struct uio io, *uiop = &io;
|
|
off_t off;
|
|
u_quad_t frev;
|
|
|
|
if (mrep == NULL) {
|
|
*mrq = NULL;
|
|
return (0);
|
|
}
|
|
fhp = &nfh.fh_generic;
|
|
nfsm_srvmtofh(fhp);
|
|
if (v3) {
|
|
nfsm_dissect(tl, u_long *, 5 * NFSX_UNSIGNED);
|
|
fxdr_hyper(tl, &off);
|
|
tl += 3;
|
|
stable = fxdr_unsigned(int, *tl++);
|
|
} else {
|
|
nfsm_dissect(tl, u_long *, 4 * NFSX_UNSIGNED);
|
|
off = (off_t)fxdr_unsigned(u_long, *++tl);
|
|
tl += 2;
|
|
if (nfs_async)
|
|
stable = NFSV3WRITE_UNSTABLE;
|
|
}
|
|
retlen = len = fxdr_unsigned(long, *tl);
|
|
cnt = i = 0;
|
|
|
|
/*
|
|
* For NFS Version 2, it is not obvious what a write of zero length
|
|
* should do, but I might as well be consistent with Version 3,
|
|
* which is to return ok so long as there are no permission problems.
|
|
*/
|
|
if (len > 0) {
|
|
zeroing = 1;
|
|
mp = mrep;
|
|
while (mp) {
|
|
if (mp == md) {
|
|
zeroing = 0;
|
|
adjust = dpos - mtod(mp, caddr_t);
|
|
mp->m_len -= adjust;
|
|
if (mp->m_len > 0 && adjust > 0)
|
|
NFSMADV(mp, adjust);
|
|
}
|
|
if (zeroing)
|
|
mp->m_len = 0;
|
|
else if (mp->m_len > 0) {
|
|
i += mp->m_len;
|
|
if (i > len) {
|
|
mp->m_len -= (i - len);
|
|
zeroing = 1;
|
|
}
|
|
if (mp->m_len > 0)
|
|
cnt++;
|
|
}
|
|
mp = mp->m_next;
|
|
}
|
|
}
|
|
if (len > NFS_MAXDATA || len < 0 || i < len) {
|
|
error = EIO;
|
|
nfsm_reply(2 * NFSX_UNSIGNED);
|
|
nfsm_srvwcc_data(forat_ret, &forat, aftat_ret, vap);
|
|
return (0);
|
|
}
|
|
if (error = nfsrv_fhtovp(fhp, 1, &vp, cred, slp, nam,
|
|
&rdonly, (nfsd->nd_flag & ND_KERBAUTH))) {
|
|
nfsm_reply(2 * NFSX_UNSIGNED);
|
|
nfsm_srvwcc_data(forat_ret, &forat, aftat_ret, vap);
|
|
return (0);
|
|
}
|
|
if (v3)
|
|
forat_ret = VOP_GETATTR(vp, &forat, cred, procp);
|
|
if (vp->v_type != VREG) {
|
|
if (v3)
|
|
error = EINVAL;
|
|
else
|
|
error = (vp->v_type == VDIR) ? EISDIR : EACCES;
|
|
}
|
|
if (!error) {
|
|
nqsrv_getl(vp, ND_WRITE);
|
|
error = nfsrv_access(vp, VWRITE, cred, rdonly, procp);
|
|
}
|
|
if (error) {
|
|
nfsrv_vput(vp);
|
|
nfsm_reply(NFSX_WCCDATA(v3));
|
|
nfsm_srvwcc_data(forat_ret, &forat, aftat_ret, vap);
|
|
return (0);
|
|
}
|
|
|
|
if (len > 0) {
|
|
MALLOC(ivp, struct iovec *, cnt * sizeof (struct iovec), M_TEMP,
|
|
M_WAITOK);
|
|
uiop->uio_iov = iv = ivp;
|
|
uiop->uio_iovcnt = cnt;
|
|
mp = mrep;
|
|
while (mp) {
|
|
if (mp->m_len > 0) {
|
|
ivp->iov_base = mtod(mp, caddr_t);
|
|
ivp->iov_len = mp->m_len;
|
|
ivp++;
|
|
}
|
|
mp = mp->m_next;
|
|
}
|
|
|
|
/*
|
|
* XXX
|
|
* The IO_METASYNC flag indicates that all metadata (and not just
|
|
* enough to ensure data integrity) mus be written to stable storage
|
|
* synchronously.
|
|
* (IO_METASYNC is not yet implemented in 4.4BSD-Lite.)
|
|
*/
|
|
if (stable == NFSV3WRITE_UNSTABLE)
|
|
ioflags = IO_NODELOCKED;
|
|
else if (stable == NFSV3WRITE_DATASYNC)
|
|
ioflags = (IO_SYNC | IO_NODELOCKED);
|
|
else
|
|
ioflags = (IO_METASYNC | IO_SYNC | IO_NODELOCKED);
|
|
uiop->uio_resid = len;
|
|
uiop->uio_rw = UIO_WRITE;
|
|
uiop->uio_segflg = UIO_SYSSPACE;
|
|
uiop->uio_procp = (struct proc *)0;
|
|
uiop->uio_offset = off;
|
|
error = VOP_WRITE(vp, uiop, ioflags, cred);
|
|
nfsstats.srvvop_writes++;
|
|
FREE((caddr_t)iv, M_TEMP);
|
|
}
|
|
aftat_ret = VOP_GETATTR(vp, vap, cred, procp);
|
|
nfsrv_vput(vp);
|
|
if (!error)
|
|
error = aftat_ret;
|
|
nfsm_reply(NFSX_PREOPATTR(v3) + NFSX_POSTOPORFATTR(v3) +
|
|
2 * NFSX_UNSIGNED + NFSX_WRITEVERF(v3));
|
|
if (v3) {
|
|
nfsm_srvwcc_data(forat_ret, &forat, aftat_ret, vap);
|
|
if (error)
|
|
return (0);
|
|
nfsm_build(tl, u_long *, 4 * NFSX_UNSIGNED);
|
|
*tl++ = txdr_unsigned(retlen);
|
|
if (stable == NFSV3WRITE_UNSTABLE)
|
|
*tl++ = txdr_unsigned(stable);
|
|
else
|
|
*tl++ = txdr_unsigned(NFSV3WRITE_FILESYNC);
|
|
/*
|
|
* Actually, there is no need to txdr these fields,
|
|
* but it may make the values more human readable,
|
|
* for debugging purposes.
|
|
*/
|
|
*tl++ = txdr_unsigned(boottime.tv_sec);
|
|
*tl = txdr_unsigned(boottime.tv_usec);
|
|
} else {
|
|
nfsm_build(fp, struct nfs_fattr *, NFSX_V2FATTR);
|
|
nfsm_srvfillattr(vap, fp);
|
|
}
|
|
nfsm_srvdone;
|
|
}
|
|
|
|
/*
|
|
* NFS write service with write gathering support. Called when
|
|
* nfsrvw_procrastinate > 0.
|
|
* See: Chet Juszczak, "Improving the Write Performance of an NFS Server",
|
|
* in Proc. of the Winter 1994 Usenix Conference, pg. 247-259, San Franscisco,
|
|
* Jan. 1994.
|
|
*/
|
|
int
|
|
nfsrv_writegather(ndp, slp, procp, mrq)
|
|
struct nfsrv_descript **ndp;
|
|
struct nfssvc_sock *slp;
|
|
struct proc *procp;
|
|
struct mbuf **mrq;
|
|
{
|
|
register struct iovec *ivp;
|
|
register struct mbuf *mp;
|
|
register struct nfsrv_descript *wp, *nfsd, *owp, *swp;
|
|
register struct nfs_fattr *fp;
|
|
register int i;
|
|
struct iovec *iov;
|
|
struct nfsrvw_delayhash *wpp;
|
|
struct ucred *cred;
|
|
struct vattr va, forat;
|
|
register u_long *tl;
|
|
register long t1;
|
|
caddr_t bpos, dpos;
|
|
int error = 0, rdonly, cache, len, forat_ret = 1;
|
|
int ioflags, aftat_ret = 1, s, adjust, v3, zeroing;
|
|
char *cp2;
|
|
struct mbuf *mb, *mb2, *mreq, *mrep, *md;
|
|
struct vnode *vp;
|
|
struct uio io, *uiop = &io;
|
|
u_quad_t frev, cur_usec;
|
|
|
|
#ifndef nolint
|
|
i = 0;
|
|
len = 0;
|
|
#endif
|
|
*mrq = NULL;
|
|
if (*ndp) {
|
|
nfsd = *ndp;
|
|
*ndp = NULL;
|
|
mrep = nfsd->nd_mrep;
|
|
md = nfsd->nd_md;
|
|
dpos = nfsd->nd_dpos;
|
|
cred = &nfsd->nd_cr;
|
|
v3 = (nfsd->nd_flag & ND_NFSV3);
|
|
LIST_INIT(&nfsd->nd_coalesce);
|
|
nfsd->nd_mreq = NULL;
|
|
nfsd->nd_stable = NFSV3WRITE_FILESYNC;
|
|
cur_usec = (u_quad_t)time.tv_sec * 1000000 + (u_quad_t)time.tv_usec;
|
|
nfsd->nd_time = cur_usec + nfsrvw_procrastinate;
|
|
|
|
/*
|
|
* Now, get the write header..
|
|
*/
|
|
nfsm_srvmtofh(&nfsd->nd_fh);
|
|
if (v3) {
|
|
nfsm_dissect(tl, u_long *, 5 * NFSX_UNSIGNED);
|
|
fxdr_hyper(tl, &nfsd->nd_off);
|
|
tl += 3;
|
|
nfsd->nd_stable = fxdr_unsigned(int, *tl++);
|
|
} else {
|
|
nfsm_dissect(tl, u_long *, 4 * NFSX_UNSIGNED);
|
|
nfsd->nd_off = (off_t)fxdr_unsigned(u_long, *++tl);
|
|
tl += 2;
|
|
if (nfs_async)
|
|
nfsd->nd_stable = NFSV3WRITE_UNSTABLE;
|
|
}
|
|
len = fxdr_unsigned(long, *tl);
|
|
nfsd->nd_len = len;
|
|
nfsd->nd_eoff = nfsd->nd_off + len;
|
|
|
|
/*
|
|
* Trim the header out of the mbuf list and trim off any trailing
|
|
* junk so that the mbuf list has only the write data.
|
|
*/
|
|
zeroing = 1;
|
|
i = 0;
|
|
mp = mrep;
|
|
while (mp) {
|
|
if (mp == md) {
|
|
zeroing = 0;
|
|
adjust = dpos - mtod(mp, caddr_t);
|
|
mp->m_len -= adjust;
|
|
if (mp->m_len > 0 && adjust > 0)
|
|
NFSMADV(mp, adjust);
|
|
}
|
|
if (zeroing)
|
|
mp->m_len = 0;
|
|
else {
|
|
i += mp->m_len;
|
|
if (i > len) {
|
|
mp->m_len -= (i - len);
|
|
zeroing = 1;
|
|
}
|
|
}
|
|
mp = mp->m_next;
|
|
}
|
|
if (len > NFS_MAXDATA || len < 0 || i < len) {
|
|
nfsmout:
|
|
m_freem(mrep);
|
|
error = EIO;
|
|
nfsm_writereply(2 * NFSX_UNSIGNED, v3);
|
|
if (v3)
|
|
nfsm_srvwcc_data(forat_ret, &forat, aftat_ret, &va);
|
|
nfsd->nd_mreq = mreq;
|
|
nfsd->nd_mrep = NULL;
|
|
nfsd->nd_time = 0;
|
|
}
|
|
|
|
/*
|
|
* Add this entry to the hash and time queues.
|
|
*/
|
|
s = splsoftclock();
|
|
owp = NULL;
|
|
wp = slp->ns_tq.lh_first;
|
|
while (wp && wp->nd_time < nfsd->nd_time) {
|
|
owp = wp;
|
|
wp = wp->nd_tq.le_next;
|
|
}
|
|
if (owp) {
|
|
LIST_INSERT_AFTER(owp, nfsd, nd_tq);
|
|
} else {
|
|
LIST_INSERT_HEAD(&slp->ns_tq, nfsd, nd_tq);
|
|
}
|
|
if (nfsd->nd_mrep) {
|
|
wpp = NWDELAYHASH(slp, nfsd->nd_fh.fh_fid.fid_data);
|
|
owp = NULL;
|
|
wp = wpp->lh_first;
|
|
while (wp &&
|
|
bcmp((caddr_t)&nfsd->nd_fh,(caddr_t)&wp->nd_fh,NFSX_V3FH)) {
|
|
owp = wp;
|
|
wp = wp->nd_hash.le_next;
|
|
}
|
|
while (wp && wp->nd_off < nfsd->nd_off &&
|
|
!bcmp((caddr_t)&nfsd->nd_fh,(caddr_t)&wp->nd_fh,NFSX_V3FH)) {
|
|
owp = wp;
|
|
wp = wp->nd_hash.le_next;
|
|
}
|
|
if (owp) {
|
|
LIST_INSERT_AFTER(owp, nfsd, nd_hash);
|
|
|
|
/*
|
|
* Search the hash list for overlapping entries and
|
|
* coalesce.
|
|
*/
|
|
for(; nfsd && NFSW_CONTIG(owp, nfsd); nfsd = wp) {
|
|
wp = nfsd->nd_hash.le_next;
|
|
if (NFSW_SAMECRED(owp, nfsd))
|
|
nfsrvw_coalesce(owp, nfsd);
|
|
}
|
|
} else {
|
|
LIST_INSERT_HEAD(wpp, nfsd, nd_hash);
|
|
}
|
|
}
|
|
splx(s);
|
|
}
|
|
|
|
/*
|
|
* Now, do VOP_WRITE()s for any one(s) that need to be done now
|
|
* and generate the associated reply mbuf list(s).
|
|
*/
|
|
loop1:
|
|
cur_usec = (u_quad_t)time.tv_sec * 1000000 + (u_quad_t)time.tv_usec;
|
|
s = splsoftclock();
|
|
for (nfsd = slp->ns_tq.lh_first; nfsd; nfsd = owp) {
|
|
owp = nfsd->nd_tq.le_next;
|
|
if (nfsd->nd_time > cur_usec)
|
|
break;
|
|
if (nfsd->nd_mreq)
|
|
continue;
|
|
LIST_REMOVE(nfsd, nd_tq);
|
|
LIST_REMOVE(nfsd, nd_hash);
|
|
splx(s);
|
|
mrep = nfsd->nd_mrep;
|
|
nfsd->nd_mrep = NULL;
|
|
cred = &nfsd->nd_cr;
|
|
v3 = (nfsd->nd_flag & ND_NFSV3);
|
|
forat_ret = aftat_ret = 1;
|
|
error = nfsrv_fhtovp(&nfsd->nd_fh, 1, &vp, cred, slp,
|
|
nfsd->nd_nam, &rdonly, (nfsd->nd_flag & ND_KERBAUTH));
|
|
if (!error) {
|
|
if (v3)
|
|
forat_ret = VOP_GETATTR(vp, &forat, cred, procp);
|
|
if (vp->v_type != VREG) {
|
|
if (v3)
|
|
error = EINVAL;
|
|
else
|
|
error = (vp->v_type == VDIR) ? EISDIR : EACCES;
|
|
}
|
|
} else
|
|
vp = NULL;
|
|
if (!error) {
|
|
nqsrv_getl(vp, ND_WRITE);
|
|
error = nfsrv_access(vp, VWRITE, cred, rdonly, procp);
|
|
}
|
|
|
|
if (nfsd->nd_stable == NFSV3WRITE_UNSTABLE)
|
|
ioflags = IO_NODELOCKED;
|
|
else if (nfsd->nd_stable == NFSV3WRITE_DATASYNC)
|
|
ioflags = (IO_SYNC | IO_NODELOCKED);
|
|
else
|
|
ioflags = (IO_METASYNC | IO_SYNC | IO_NODELOCKED);
|
|
uiop->uio_rw = UIO_WRITE;
|
|
uiop->uio_segflg = UIO_SYSSPACE;
|
|
uiop->uio_procp = (struct proc *)0;
|
|
uiop->uio_offset = nfsd->nd_off;
|
|
uiop->uio_resid = nfsd->nd_eoff - nfsd->nd_off;
|
|
if (uiop->uio_resid > 0) {
|
|
mp = mrep;
|
|
i = 0;
|
|
while (mp) {
|
|
if (mp->m_len > 0)
|
|
i++;
|
|
mp = mp->m_next;
|
|
}
|
|
uiop->uio_iovcnt = i;
|
|
MALLOC(iov, struct iovec *, i * sizeof (struct iovec),
|
|
M_TEMP, M_WAITOK);
|
|
uiop->uio_iov = ivp = iov;
|
|
mp = mrep;
|
|
while (mp) {
|
|
if (mp->m_len > 0) {
|
|
ivp->iov_base = mtod(mp, caddr_t);
|
|
ivp->iov_len = mp->m_len;
|
|
ivp++;
|
|
}
|
|
mp = mp->m_next;
|
|
}
|
|
if (!error) {
|
|
error = VOP_WRITE(vp, uiop, ioflags, cred);
|
|
nfsstats.srvvop_writes++;
|
|
}
|
|
FREE((caddr_t)iov, M_TEMP);
|
|
}
|
|
m_freem(mrep);
|
|
if (vp) {
|
|
aftat_ret = VOP_GETATTR(vp, &va, cred, procp);
|
|
nfsrv_vput(vp);
|
|
}
|
|
|
|
/*
|
|
* Loop around generating replies for all write rpcs that have
|
|
* now been completed.
|
|
*/
|
|
swp = nfsd;
|
|
do {
|
|
if (error) {
|
|
nfsm_writereply(NFSX_WCCDATA(v3), v3);
|
|
if (v3) {
|
|
nfsm_srvwcc_data(forat_ret, &forat, aftat_ret, &va);
|
|
}
|
|
} else {
|
|
nfsm_writereply(NFSX_PREOPATTR(v3) +
|
|
NFSX_POSTOPORFATTR(v3) + 2 * NFSX_UNSIGNED +
|
|
NFSX_WRITEVERF(v3), v3);
|
|
if (v3) {
|
|
nfsm_srvwcc_data(forat_ret, &forat, aftat_ret, &va);
|
|
nfsm_build(tl, u_long *, 4 * NFSX_UNSIGNED);
|
|
*tl++ = txdr_unsigned(nfsd->nd_len);
|
|
*tl++ = txdr_unsigned(swp->nd_stable);
|
|
/*
|
|
* Actually, there is no need to txdr these fields,
|
|
* but it may make the values more human readable,
|
|
* for debugging purposes.
|
|
*/
|
|
*tl++ = txdr_unsigned(boottime.tv_sec);
|
|
*tl = txdr_unsigned(boottime.tv_usec);
|
|
} else {
|
|
nfsm_build(fp, struct nfs_fattr *, NFSX_V2FATTR);
|
|
nfsm_srvfillattr(&va, fp);
|
|
}
|
|
}
|
|
nfsd->nd_mreq = mreq;
|
|
if (nfsd->nd_mrep)
|
|
panic("nfsrv_write: nd_mrep not free");
|
|
|
|
/*
|
|
* Done. Put it at the head of the timer queue so that
|
|
* the final phase can return the reply.
|
|
*/
|
|
s = splsoftclock();
|
|
if (nfsd != swp) {
|
|
nfsd->nd_time = 0;
|
|
LIST_INSERT_HEAD(&slp->ns_tq, nfsd, nd_tq);
|
|
}
|
|
nfsd = swp->nd_coalesce.lh_first;
|
|
if (nfsd) {
|
|
LIST_REMOVE(nfsd, nd_tq);
|
|
}
|
|
splx(s);
|
|
} while (nfsd);
|
|
s = splsoftclock();
|
|
swp->nd_time = 0;
|
|
LIST_INSERT_HEAD(&slp->ns_tq, swp, nd_tq);
|
|
splx(s);
|
|
goto loop1;
|
|
}
|
|
splx(s);
|
|
|
|
/*
|
|
* Search for a reply to return.
|
|
*/
|
|
s = splsoftclock();
|
|
for (nfsd = slp->ns_tq.lh_first; nfsd; nfsd = nfsd->nd_tq.le_next)
|
|
if (nfsd->nd_mreq) {
|
|
LIST_REMOVE(nfsd, nd_tq);
|
|
*mrq = nfsd->nd_mreq;
|
|
*ndp = nfsd;
|
|
break;
|
|
}
|
|
splx(s);
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Coalesce the write request nfsd into owp. To do this we must:
|
|
* - remove nfsd from the queues
|
|
* - merge nfsd->nd_mrep into owp->nd_mrep
|
|
* - update the nd_eoff and nd_stable for owp
|
|
* - put nfsd on owp's nd_coalesce list
|
|
* NB: Must be called at splsoftclock().
|
|
*/
|
|
static void
|
|
nfsrvw_coalesce(owp, nfsd)
|
|
register struct nfsrv_descript *owp;
|
|
register struct nfsrv_descript *nfsd;
|
|
{
|
|
register int overlap;
|
|
register struct mbuf *mp;
|
|
|
|
LIST_REMOVE(nfsd, nd_hash);
|
|
LIST_REMOVE(nfsd, nd_tq);
|
|
if (owp->nd_eoff < nfsd->nd_eoff) {
|
|
overlap = owp->nd_eoff - nfsd->nd_off;
|
|
if (overlap < 0)
|
|
panic("nfsrv_coalesce: bad off");
|
|
if (overlap > 0)
|
|
m_adj(nfsd->nd_mrep, overlap);
|
|
mp = owp->nd_mrep;
|
|
while (mp->m_next)
|
|
mp = mp->m_next;
|
|
mp->m_next = nfsd->nd_mrep;
|
|
owp->nd_eoff = nfsd->nd_eoff;
|
|
} else
|
|
m_freem(nfsd->nd_mrep);
|
|
nfsd->nd_mrep = NULL;
|
|
if (nfsd->nd_stable == NFSV3WRITE_FILESYNC)
|
|
owp->nd_stable = NFSV3WRITE_FILESYNC;
|
|
else if (nfsd->nd_stable == NFSV3WRITE_DATASYNC &&
|
|
owp->nd_stable == NFSV3WRITE_UNSTABLE)
|
|
owp->nd_stable = NFSV3WRITE_DATASYNC;
|
|
LIST_INSERT_HEAD(&owp->nd_coalesce, nfsd, nd_tq);
|
|
}
|
|
|
|
/*
|
|
* Sort the group list in increasing numerical order.
|
|
* (Insertion sort by Chris Torek, who was grossed out by the bubble sort
|
|
* that used to be here.)
|
|
*/
|
|
void
|
|
nfsrvw_sort(list, num)
|
|
register gid_t *list;
|
|
register int num;
|
|
{
|
|
register int i, j;
|
|
gid_t v;
|
|
|
|
/* Insertion sort. */
|
|
for (i = 1; i < num; i++) {
|
|
v = list[i];
|
|
/* find correct slot for value v, moving others up */
|
|
for (j = i; --j >= 0 && v < list[j];)
|
|
list[j + 1] = list[j];
|
|
list[j + 1] = v;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* copy credentials making sure that the result can be compared with bcmp().
|
|
*/
|
|
void
|
|
nfsrv_setcred(incred, outcred)
|
|
register struct ucred *incred, *outcred;
|
|
{
|
|
register int i;
|
|
|
|
bzero((caddr_t)outcred, sizeof (struct ucred));
|
|
outcred->cr_ref = 1;
|
|
outcred->cr_uid = incred->cr_uid;
|
|
outcred->cr_ngroups = incred->cr_ngroups;
|
|
for (i = 0; i < incred->cr_ngroups; i++)
|
|
outcred->cr_groups[i] = incred->cr_groups[i];
|
|
nfsrvw_sort(outcred->cr_groups, outcred->cr_ngroups);
|
|
}
|
|
|
|
/*
|
|
* nfs create service
|
|
* now does a truncate to 0 length via. setattr if it already exists
|
|
*/
|
|
int
|
|
nfsrv_create(nfsd, slp, procp, mrq)
|
|
struct nfsrv_descript *nfsd;
|
|
struct nfssvc_sock *slp;
|
|
struct proc *procp;
|
|
struct mbuf **mrq;
|
|
{
|
|
struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
|
|
struct mbuf *nam = nfsd->nd_nam;
|
|
caddr_t dpos = nfsd->nd_dpos;
|
|
struct ucred *cred = &nfsd->nd_cr;
|
|
register struct nfs_fattr *fp;
|
|
struct vattr va, dirfor, diraft;
|
|
register struct vattr *vap = &va;
|
|
register struct nfsv2_sattr *sp;
|
|
register u_long *tl;
|
|
struct nameidata nd;
|
|
register caddr_t cp;
|
|
register long t1;
|
|
caddr_t bpos;
|
|
int error = 0, rdev, cache, len, tsize, dirfor_ret = 1, diraft_ret = 1;
|
|
int v3 = (nfsd->nd_flag & ND_NFSV3), how, exclusive_flag = 0;
|
|
char *cp2;
|
|
struct mbuf *mb, *mb2, *mreq;
|
|
struct vnode *vp, *dirp = (struct vnode *)0;
|
|
nfsfh_t nfh;
|
|
fhandle_t *fhp;
|
|
u_quad_t frev, tempsize;
|
|
u_char cverf[NFSX_V3CREATEVERF];
|
|
|
|
#ifndef nolint
|
|
rdev = 0;
|
|
#endif
|
|
nd.ni_cnd.cn_nameiop = 0;
|
|
fhp = &nfh.fh_generic;
|
|
nfsm_srvmtofh(fhp);
|
|
nfsm_srvnamesiz(len);
|
|
nd.ni_cnd.cn_cred = cred;
|
|
nd.ni_cnd.cn_nameiop = CREATE;
|
|
nd.ni_cnd.cn_flags = LOCKPARENT | LOCKLEAF | SAVESTART;
|
|
error = nfs_namei(&nd, fhp, len, slp, nam, &md, &dpos,
|
|
&dirp, procp, (nfsd->nd_flag & ND_KERBAUTH));
|
|
if (dirp) {
|
|
if (v3)
|
|
dirfor_ret = VOP_GETATTR(dirp, &dirfor, cred,
|
|
procp);
|
|
else {
|
|
nfsrv_vrele(dirp);
|
|
dirp = (struct vnode *)0;
|
|
}
|
|
}
|
|
if (error) {
|
|
nfsm_reply(NFSX_WCCDATA(v3));
|
|
nfsm_srvwcc_data(dirfor_ret, &dirfor, diraft_ret, &diraft);
|
|
if (dirp)
|
|
nfsrv_vrele(dirp);
|
|
return (0);
|
|
}
|
|
VATTR_NULL(vap);
|
|
if (v3) {
|
|
nfsm_dissect(tl, u_long *, NFSX_UNSIGNED);
|
|
how = fxdr_unsigned(int, *tl);
|
|
switch (how) {
|
|
case NFSV3CREATE_GUARDED:
|
|
if (nd.ni_vp) {
|
|
error = EEXIST;
|
|
break;
|
|
}
|
|
case NFSV3CREATE_UNCHECKED:
|
|
nfsm_srvsattr(vap);
|
|
break;
|
|
case NFSV3CREATE_EXCLUSIVE:
|
|
nfsm_dissect(cp, caddr_t, NFSX_V3CREATEVERF);
|
|
bcopy(cp, cverf, NFSX_V3CREATEVERF);
|
|
exclusive_flag = 1;
|
|
if (nd.ni_vp == NULL)
|
|
vap->va_mode = 0;
|
|
break;
|
|
};
|
|
vap->va_type = VREG;
|
|
} else {
|
|
nfsm_dissect(sp, struct nfsv2_sattr *, NFSX_V2SATTR);
|
|
vap->va_type = IFTOVT(fxdr_unsigned(u_long, sp->sa_mode));
|
|
if (vap->va_type == VNON)
|
|
vap->va_type = VREG;
|
|
vap->va_mode = nfstov_mode(sp->sa_mode);
|
|
switch (vap->va_type) {
|
|
case VREG:
|
|
tsize = fxdr_unsigned(long, sp->sa_size);
|
|
if (tsize != -1)
|
|
vap->va_size = (u_quad_t)tsize;
|
|
break;
|
|
case VCHR:
|
|
case VBLK:
|
|
case VFIFO:
|
|
rdev = fxdr_unsigned(long, sp->sa_size);
|
|
break;
|
|
};
|
|
}
|
|
|
|
/*
|
|
* Iff doesn't exist, create it
|
|
* otherwise just truncate to 0 length
|
|
* should I set the mode too ??
|
|
*/
|
|
if (nd.ni_vp == NULL) {
|
|
if (vap->va_type == VREG || vap->va_type == VSOCK) {
|
|
nfsrv_vrele(nd.ni_startdir);
|
|
nqsrv_getl(nd.ni_dvp, ND_WRITE);
|
|
error = VOP_CREATE(nd.ni_dvp, &nd.ni_vp, &nd.ni_cnd, vap);
|
|
if (!error) {
|
|
nfsrv_vmio(nd.ni_vp);
|
|
FREE(nd.ni_cnd.cn_pnbuf, M_NAMEI);
|
|
if (exclusive_flag) {
|
|
exclusive_flag = 0;
|
|
VATTR_NULL(vap);
|
|
bcopy(cverf, (caddr_t)&vap->va_atime,
|
|
NFSX_V3CREATEVERF);
|
|
error = VOP_SETATTR(nd.ni_vp, vap, cred,
|
|
procp);
|
|
}
|
|
}
|
|
} else if (vap->va_type == VCHR || vap->va_type == VBLK ||
|
|
vap->va_type == VFIFO) {
|
|
if (vap->va_type == VCHR && rdev == 0xffffffff)
|
|
vap->va_type = VFIFO;
|
|
if (error = suser(cred, (u_short *)0)) {
|
|
nfsrv_vrele(nd.ni_startdir);
|
|
free(nd.ni_cnd.cn_pnbuf, M_NAMEI);
|
|
VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd);
|
|
nfsrv_vput(nd.ni_dvp);
|
|
nfsm_reply(0);
|
|
return (error);
|
|
} else
|
|
vap->va_rdev = (dev_t)rdev;
|
|
nqsrv_getl(nd.ni_dvp, ND_WRITE);
|
|
if (error = VOP_MKNOD(nd.ni_dvp, &nd.ni_vp, &nd.ni_cnd, vap)) {
|
|
nfsrv_vrele(nd.ni_startdir);
|
|
nfsm_reply(0);
|
|
}
|
|
nd.ni_cnd.cn_nameiop = LOOKUP;
|
|
nd.ni_cnd.cn_flags &= ~(LOCKPARENT | SAVESTART);
|
|
nd.ni_cnd.cn_proc = procp;
|
|
nd.ni_cnd.cn_cred = cred;
|
|
if (error = lookup(&nd)) {
|
|
free(nd.ni_cnd.cn_pnbuf, M_NAMEI);
|
|
nfsm_reply(0);
|
|
}
|
|
nfsrv_vmio(nd.ni_vp);
|
|
FREE(nd.ni_cnd.cn_pnbuf, M_NAMEI);
|
|
if (nd.ni_cnd.cn_flags & ISSYMLINK) {
|
|
nfsrv_vrele(nd.ni_dvp);
|
|
nfsrv_vput(nd.ni_vp);
|
|
VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd);
|
|
error = EINVAL;
|
|
nfsm_reply(0);
|
|
}
|
|
} else {
|
|
nfsrv_vrele(nd.ni_startdir);
|
|
free(nd.ni_cnd.cn_pnbuf, M_NAMEI);
|
|
VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd);
|
|
nfsrv_vput(nd.ni_dvp);
|
|
error = ENXIO;
|
|
}
|
|
vp = nd.ni_vp;
|
|
} else {
|
|
nfsrv_vrele(nd.ni_startdir);
|
|
free(nd.ni_cnd.cn_pnbuf, M_NAMEI);
|
|
vp = nd.ni_vp;
|
|
if (nd.ni_dvp == vp)
|
|
nfsrv_vrele(nd.ni_dvp);
|
|
else
|
|
nfsrv_vput(nd.ni_dvp);
|
|
VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd);
|
|
if (vap->va_size != -1) {
|
|
error = nfsrv_access(vp, VWRITE, cred,
|
|
(nd.ni_cnd.cn_flags & RDONLY), procp);
|
|
if (!error) {
|
|
nqsrv_getl(vp, ND_WRITE);
|
|
tempsize = vap->va_size;
|
|
VATTR_NULL(vap);
|
|
vap->va_size = tempsize;
|
|
error = VOP_SETATTR(vp, vap, cred,
|
|
procp);
|
|
}
|
|
if (error)
|
|
nfsrv_vput(vp);
|
|
}
|
|
}
|
|
if (!error) {
|
|
bzero((caddr_t)fhp, sizeof(nfh));
|
|
fhp->fh_fsid = vp->v_mount->mnt_stat.f_fsid;
|
|
error = VFS_VPTOFH(vp, &fhp->fh_fid);
|
|
if (!error)
|
|
error = VOP_GETATTR(vp, vap, cred, procp);
|
|
nfsrv_vput(vp);
|
|
}
|
|
if (v3) {
|
|
if (exclusive_flag && !error &&
|
|
bcmp(cverf, (caddr_t)&vap->va_atime, NFSX_V3CREATEVERF))
|
|
error = EEXIST;
|
|
diraft_ret = VOP_GETATTR(dirp, &diraft, cred, procp);
|
|
nfsrv_vrele(dirp);
|
|
}
|
|
nfsm_reply(NFSX_SRVFH(v3) + NFSX_FATTR(v3) + NFSX_WCCDATA(v3));
|
|
if (v3) {
|
|
if (!error) {
|
|
nfsm_srvpostop_fh(fhp);
|
|
nfsm_srvpostop_attr(0, vap);
|
|
}
|
|
nfsm_srvwcc_data(dirfor_ret, &dirfor, diraft_ret, &diraft);
|
|
} else {
|
|
nfsm_srvfhtom(fhp, v3);
|
|
nfsm_build(fp, struct nfs_fattr *, NFSX_V2FATTR);
|
|
nfsm_srvfillattr(vap, fp);
|
|
}
|
|
return (0);
|
|
nfsmout:
|
|
if (dirp)
|
|
nfsrv_vrele(dirp);
|
|
if (nd.ni_cnd.cn_nameiop) {
|
|
nfsrv_vrele(nd.ni_startdir);
|
|
free((caddr_t)nd.ni_cnd.cn_pnbuf, M_NAMEI);
|
|
}
|
|
VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd);
|
|
if (nd.ni_dvp == nd.ni_vp)
|
|
nfsrv_vrele(nd.ni_dvp);
|
|
else
|
|
nfsrv_vput(nd.ni_dvp);
|
|
if (nd.ni_vp)
|
|
nfsrv_vput(nd.ni_vp);
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* nfs v3 mknod service
|
|
*/
|
|
int
|
|
nfsrv_mknod(nfsd, slp, procp, mrq)
|
|
struct nfsrv_descript *nfsd;
|
|
struct nfssvc_sock *slp;
|
|
struct proc *procp;
|
|
struct mbuf **mrq;
|
|
{
|
|
struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
|
|
struct mbuf *nam = nfsd->nd_nam;
|
|
caddr_t dpos = nfsd->nd_dpos;
|
|
struct ucred *cred = &nfsd->nd_cr;
|
|
struct vattr va, dirfor, diraft;
|
|
register struct vattr *vap = &va;
|
|
register u_long *tl;
|
|
struct nameidata nd;
|
|
register long t1;
|
|
caddr_t bpos;
|
|
int error = 0, cache, len, dirfor_ret = 1, diraft_ret = 1;
|
|
u_long major, minor;
|
|
enum vtype vtyp;
|
|
char *cp2;
|
|
struct mbuf *mb, *mb2, *mreq;
|
|
struct vnode *vp, *dirp = (struct vnode *)0;
|
|
nfsfh_t nfh;
|
|
fhandle_t *fhp;
|
|
u_quad_t frev;
|
|
|
|
nd.ni_cnd.cn_nameiop = 0;
|
|
fhp = &nfh.fh_generic;
|
|
nfsm_srvmtofh(fhp);
|
|
nfsm_srvnamesiz(len);
|
|
nd.ni_cnd.cn_cred = cred;
|
|
nd.ni_cnd.cn_nameiop = CREATE;
|
|
nd.ni_cnd.cn_flags = LOCKPARENT | LOCKLEAF | SAVESTART;
|
|
error = nfs_namei(&nd, fhp, len, slp, nam, &md, &dpos,
|
|
&dirp, procp, (nfsd->nd_flag & ND_KERBAUTH));
|
|
if (dirp)
|
|
dirfor_ret = VOP_GETATTR(dirp, &dirfor, cred, procp);
|
|
if (error) {
|
|
nfsm_reply(NFSX_WCCDATA(1));
|
|
nfsm_srvwcc_data(dirfor_ret, &dirfor, diraft_ret, &diraft);
|
|
if (dirp)
|
|
nfsrv_vrele(dirp);
|
|
return (0);
|
|
}
|
|
nfsm_dissect(tl, u_long *, NFSX_UNSIGNED);
|
|
vtyp = nfsv3tov_type(*tl);
|
|
if (vtyp != VCHR && vtyp != VBLK && vtyp != VSOCK && vtyp != VFIFO) {
|
|
nfsrv_vrele(nd.ni_startdir);
|
|
free((caddr_t)nd.ni_cnd.cn_pnbuf, M_NAMEI);
|
|
error = NFSERR_BADTYPE;
|
|
VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd);
|
|
nfsrv_vput(nd.ni_dvp);
|
|
goto out;
|
|
}
|
|
VATTR_NULL(vap);
|
|
nfsm_srvsattr(vap);
|
|
if (vtyp == VCHR || vtyp == VBLK) {
|
|
nfsm_dissect(tl, u_long *, 2 * NFSX_UNSIGNED);
|
|
major = fxdr_unsigned(u_long, *tl++);
|
|
minor = fxdr_unsigned(u_long, *tl);
|
|
vap->va_rdev = makedev(major, minor);
|
|
}
|
|
|
|
/*
|
|
* Iff doesn't exist, create it.
|
|
*/
|
|
if (nd.ni_vp) {
|
|
nfsrv_vrele(nd.ni_startdir);
|
|
free((caddr_t)nd.ni_cnd.cn_pnbuf, M_NAMEI);
|
|
error = EEXIST;
|
|
VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd);
|
|
nfsrv_vput(nd.ni_dvp);
|
|
goto out;
|
|
}
|
|
vap->va_type = vtyp;
|
|
if (vtyp == VSOCK) {
|
|
nfsrv_vrele(nd.ni_startdir);
|
|
nqsrv_getl(nd.ni_dvp, ND_WRITE);
|
|
error = VOP_CREATE(nd.ni_dvp, &nd.ni_vp, &nd.ni_cnd, vap);
|
|
if (!error)
|
|
FREE(nd.ni_cnd.cn_pnbuf, M_NAMEI);
|
|
} else {
|
|
if (error = suser(cred, (u_short *)0)) {
|
|
nfsrv_vrele(nd.ni_startdir);
|
|
free((caddr_t)nd.ni_cnd.cn_pnbuf, M_NAMEI);
|
|
VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd);
|
|
nfsrv_vput(nd.ni_dvp);
|
|
goto out;
|
|
}
|
|
nqsrv_getl(nd.ni_dvp, ND_WRITE);
|
|
if (error = VOP_MKNOD(nd.ni_dvp, &nd.ni_vp, &nd.ni_cnd, vap)) {
|
|
nfsrv_vrele(nd.ni_startdir);
|
|
goto out;
|
|
}
|
|
nd.ni_cnd.cn_nameiop = LOOKUP;
|
|
nd.ni_cnd.cn_flags &= ~(LOCKPARENT | SAVESTART);
|
|
nd.ni_cnd.cn_proc = procp;
|
|
nd.ni_cnd.cn_cred = procp->p_ucred;
|
|
error = lookup(&nd);
|
|
FREE(nd.ni_cnd.cn_pnbuf, M_NAMEI);
|
|
if (error)
|
|
goto out;
|
|
if (nd.ni_cnd.cn_flags & ISSYMLINK) {
|
|
nfsrv_vrele(nd.ni_dvp);
|
|
nfsrv_vput(nd.ni_vp);
|
|
VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd);
|
|
error = EINVAL;
|
|
}
|
|
}
|
|
out:
|
|
vp = nd.ni_vp;
|
|
if (!error) {
|
|
bzero((caddr_t)fhp, sizeof(nfh));
|
|
fhp->fh_fsid = vp->v_mount->mnt_stat.f_fsid;
|
|
error = VFS_VPTOFH(vp, &fhp->fh_fid);
|
|
if (!error)
|
|
error = VOP_GETATTR(vp, vap, cred, procp);
|
|
nfsrv_vput(vp);
|
|
}
|
|
diraft_ret = VOP_GETATTR(dirp, &diraft, cred, procp);
|
|
nfsrv_vrele(dirp);
|
|
nfsm_reply(NFSX_SRVFH(1) + NFSX_POSTOPATTR(1) + NFSX_WCCDATA(1));
|
|
if (!error) {
|
|
nfsm_srvpostop_fh(fhp);
|
|
nfsm_srvpostop_attr(0, vap);
|
|
}
|
|
nfsm_srvwcc_data(dirfor_ret, &dirfor, diraft_ret, &diraft);
|
|
return (0);
|
|
nfsmout:
|
|
if (dirp)
|
|
nfsrv_vrele(dirp);
|
|
if (nd.ni_cnd.cn_nameiop) {
|
|
nfsrv_vrele(nd.ni_startdir);
|
|
free((caddr_t)nd.ni_cnd.cn_pnbuf, M_NAMEI);
|
|
}
|
|
VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd);
|
|
if (nd.ni_dvp == nd.ni_vp)
|
|
nfsrv_vrele(nd.ni_dvp);
|
|
else
|
|
nfsrv_vput(nd.ni_dvp);
|
|
if (nd.ni_vp)
|
|
nfsrv_vput(nd.ni_vp);
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* nfs remove service
|
|
*/
|
|
int
|
|
nfsrv_remove(nfsd, slp, procp, mrq)
|
|
struct nfsrv_descript *nfsd;
|
|
struct nfssvc_sock *slp;
|
|
struct proc *procp;
|
|
struct mbuf **mrq;
|
|
{
|
|
struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
|
|
struct mbuf *nam = nfsd->nd_nam;
|
|
caddr_t dpos = nfsd->nd_dpos;
|
|
struct ucred *cred = &nfsd->nd_cr;
|
|
struct nameidata nd;
|
|
register u_long *tl;
|
|
register long t1;
|
|
caddr_t bpos;
|
|
int error = 0, cache, len, dirfor_ret = 1, diraft_ret = 1;
|
|
int v3 = (nfsd->nd_flag & ND_NFSV3);
|
|
char *cp2;
|
|
struct mbuf *mb, *mreq;
|
|
struct vnode *vp, *dirp;
|
|
struct vattr dirfor, diraft;
|
|
nfsfh_t nfh;
|
|
fhandle_t *fhp;
|
|
u_quad_t frev;
|
|
|
|
#ifndef nolint
|
|
vp = (struct vnode *)0;
|
|
#endif
|
|
fhp = &nfh.fh_generic;
|
|
nfsm_srvmtofh(fhp);
|
|
nfsm_srvnamesiz(len);
|
|
nd.ni_cnd.cn_cred = cred;
|
|
nd.ni_cnd.cn_nameiop = DELETE;
|
|
nd.ni_cnd.cn_flags = LOCKPARENT | LOCKLEAF;
|
|
error = nfs_namei(&nd, fhp, len, slp, nam, &md, &dpos,
|
|
&dirp, procp, (nfsd->nd_flag & ND_KERBAUTH));
|
|
if (dirp) {
|
|
if (v3)
|
|
dirfor_ret = VOP_GETATTR(dirp, &dirfor, cred,
|
|
procp);
|
|
else
|
|
nfsrv_vrele(dirp);
|
|
}
|
|
if (!error) {
|
|
vp = nd.ni_vp;
|
|
if (vp->v_type == VDIR &&
|
|
(error = suser(cred, (u_short *)0)))
|
|
goto out;
|
|
/*
|
|
* The root of a mounted filesystem cannot be deleted.
|
|
*/
|
|
if (vp->v_flag & VROOT) {
|
|
error = EBUSY;
|
|
goto out;
|
|
}
|
|
vnode_pager_uncache(vp);
|
|
out:
|
|
if (!error) {
|
|
int deallocobj = 0;
|
|
nqsrv_getl(nd.ni_dvp, ND_WRITE);
|
|
nqsrv_getl(vp, ND_WRITE);
|
|
|
|
if ((vp->v_flag & VVMIO) && vp->v_object)
|
|
deallocobj = 1;
|
|
error = VOP_REMOVE(nd.ni_dvp, nd.ni_vp, &nd.ni_cnd);
|
|
if (error == 0 && deallocobj)
|
|
vm_object_deallocate(vp->v_object);
|
|
} else {
|
|
VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd);
|
|
if (nd.ni_dvp == vp)
|
|
nfsrv_vrele(nd.ni_dvp);
|
|
else
|
|
nfsrv_vput(nd.ni_dvp);
|
|
nfsrv_vput(vp);
|
|
}
|
|
}
|
|
if (dirp && v3) {
|
|
diraft_ret = VOP_GETATTR(dirp, &diraft, cred, procp);
|
|
nfsrv_vrele(dirp);
|
|
}
|
|
nfsm_reply(NFSX_WCCDATA(v3));
|
|
if (v3) {
|
|
nfsm_srvwcc_data(dirfor_ret, &dirfor, diraft_ret, &diraft);
|
|
return (0);
|
|
}
|
|
nfsm_srvdone;
|
|
}
|
|
|
|
/*
|
|
* nfs rename service
|
|
*/
|
|
int
|
|
nfsrv_rename(nfsd, slp, procp, mrq)
|
|
struct nfsrv_descript *nfsd;
|
|
struct nfssvc_sock *slp;
|
|
struct proc *procp;
|
|
struct mbuf **mrq;
|
|
{
|
|
struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
|
|
struct mbuf *nam = nfsd->nd_nam;
|
|
caddr_t dpos = nfsd->nd_dpos;
|
|
struct ucred *cred = &nfsd->nd_cr;
|
|
register u_long *tl;
|
|
register long t1;
|
|
caddr_t bpos;
|
|
int error = 0, cache, len, len2, fdirfor_ret = 1, fdiraft_ret = 1;
|
|
int tdirfor_ret = 1, tdiraft_ret = 1;
|
|
int v3 = (nfsd->nd_flag & ND_NFSV3);
|
|
char *cp2;
|
|
struct mbuf *mb, *mreq;
|
|
struct nameidata fromnd, tond;
|
|
struct vnode *fvp, *tvp, *tdvp, *fdirp = (struct vnode *)0;
|
|
struct vnode *tdirp = (struct vnode *)0;
|
|
struct vattr fdirfor, fdiraft, tdirfor, tdiraft;
|
|
nfsfh_t fnfh, tnfh;
|
|
fhandle_t *ffhp, *tfhp;
|
|
u_quad_t frev;
|
|
uid_t saved_uid;
|
|
|
|
#ifndef nolint
|
|
fvp = (struct vnode *)0;
|
|
#endif
|
|
ffhp = &fnfh.fh_generic;
|
|
tfhp = &tnfh.fh_generic;
|
|
fromnd.ni_cnd.cn_nameiop = 0;
|
|
tond.ni_cnd.cn_nameiop = 0;
|
|
nfsm_srvmtofh(ffhp);
|
|
nfsm_srvnamesiz(len);
|
|
/*
|
|
* Remember our original uid so that we can reset cr_uid before
|
|
* the second nfs_namei() call, in case it is remapped.
|
|
*/
|
|
saved_uid = cred->cr_uid;
|
|
fromnd.ni_cnd.cn_cred = cred;
|
|
fromnd.ni_cnd.cn_nameiop = DELETE;
|
|
fromnd.ni_cnd.cn_flags = WANTPARENT | SAVESTART;
|
|
error = nfs_namei(&fromnd, ffhp, len, slp, nam, &md,
|
|
&dpos, &fdirp, procp, (nfsd->nd_flag & ND_KERBAUTH));
|
|
if (fdirp) {
|
|
if (v3)
|
|
fdirfor_ret = VOP_GETATTR(fdirp, &fdirfor, cred,
|
|
procp);
|
|
else {
|
|
nfsrv_vrele(fdirp);
|
|
fdirp = (struct vnode *)0;
|
|
}
|
|
}
|
|
if (error) {
|
|
nfsm_reply(2 * NFSX_WCCDATA(v3));
|
|
nfsm_srvwcc_data(fdirfor_ret, &fdirfor, fdiraft_ret, &fdiraft);
|
|
nfsm_srvwcc_data(tdirfor_ret, &tdirfor, tdiraft_ret, &tdiraft);
|
|
if (fdirp)
|
|
nfsrv_vrele(fdirp);
|
|
return (0);
|
|
}
|
|
fvp = fromnd.ni_vp;
|
|
nfsm_srvmtofh(tfhp);
|
|
nfsm_strsiz(len2, NFS_MAXNAMLEN);
|
|
cred->cr_uid = saved_uid;
|
|
tond.ni_cnd.cn_cred = cred;
|
|
tond.ni_cnd.cn_nameiop = RENAME;
|
|
tond.ni_cnd.cn_flags = LOCKPARENT | LOCKLEAF | NOCACHE | SAVESTART;
|
|
error = nfs_namei(&tond, tfhp, len2, slp, nam, &md,
|
|
&dpos, &tdirp, procp, (nfsd->nd_flag & ND_KERBAUTH));
|
|
if (tdirp) {
|
|
if (v3)
|
|
tdirfor_ret = VOP_GETATTR(tdirp, &tdirfor, cred,
|
|
procp);
|
|
else {
|
|
nfsrv_vrele(tdirp);
|
|
tdirp = (struct vnode *)0;
|
|
}
|
|
}
|
|
if (error) {
|
|
VOP_ABORTOP(fromnd.ni_dvp, &fromnd.ni_cnd);
|
|
nfsrv_vrele(fromnd.ni_dvp);
|
|
nfsrv_vrele(fvp);
|
|
goto out1;
|
|
}
|
|
tdvp = tond.ni_dvp;
|
|
tvp = tond.ni_vp;
|
|
if (tvp != NULL) {
|
|
if (fvp->v_type == VDIR && tvp->v_type != VDIR) {
|
|
if (v3)
|
|
error = EEXIST;
|
|
else
|
|
error = EISDIR;
|
|
goto out;
|
|
} else if (fvp->v_type != VDIR && tvp->v_type == VDIR) {
|
|
if (v3)
|
|
error = EEXIST;
|
|
else
|
|
error = ENOTDIR;
|
|
goto out;
|
|
}
|
|
if (tvp->v_type == VDIR && tvp->v_mountedhere) {
|
|
if (v3)
|
|
error = EXDEV;
|
|
else
|
|
error = ENOTEMPTY;
|
|
goto out;
|
|
}
|
|
}
|
|
if (fvp->v_type == VDIR && fvp->v_mountedhere) {
|
|
if (v3)
|
|
error = EXDEV;
|
|
else
|
|
error = ENOTEMPTY;
|
|
goto out;
|
|
}
|
|
if (fvp->v_mount != tdvp->v_mount) {
|
|
if (v3)
|
|
error = EXDEV;
|
|
else
|
|
error = ENOTEMPTY;
|
|
goto out;
|
|
}
|
|
if (fvp == tdvp)
|
|
if (v3)
|
|
error = EINVAL;
|
|
else
|
|
error = ENOTEMPTY;
|
|
/*
|
|
* If source is the same as the destination (that is the
|
|
* same vnode with the same name in the same directory),
|
|
* then there is nothing to do.
|
|
*/
|
|
if (fvp == tvp && fromnd.ni_dvp == tdvp &&
|
|
fromnd.ni_cnd.cn_namelen == tond.ni_cnd.cn_namelen &&
|
|
!bcmp(fromnd.ni_cnd.cn_nameptr, tond.ni_cnd.cn_nameptr,
|
|
fromnd.ni_cnd.cn_namelen))
|
|
error = -1;
|
|
out:
|
|
if (!error) {
|
|
int deallocobjfrom = 0, deallocobjto = 0;
|
|
nqsrv_getl(fromnd.ni_dvp, ND_WRITE);
|
|
nqsrv_getl(tdvp, ND_WRITE);
|
|
if (tvp) {
|
|
nqsrv_getl(tvp, ND_WRITE);
|
|
if ((tvp->v_flag & VVMIO) && tvp->v_object)
|
|
deallocobjto = 1;
|
|
}
|
|
if ((fvp->v_flag & VVMIO) && fvp->v_object)
|
|
deallocobjfrom = 1;
|
|
error = VOP_RENAME(fromnd.ni_dvp, fromnd.ni_vp, &fromnd.ni_cnd,
|
|
tond.ni_dvp, tond.ni_vp, &tond.ni_cnd);
|
|
if (deallocobjfrom)
|
|
vm_object_deallocate(fvp->v_object);
|
|
if (deallocobjto)
|
|
vm_object_deallocate(tvp->v_object);
|
|
|
|
} else {
|
|
VOP_ABORTOP(tond.ni_dvp, &tond.ni_cnd);
|
|
if (tdvp == tvp)
|
|
nfsrv_vrele(tdvp);
|
|
else
|
|
nfsrv_vput(tdvp);
|
|
if (tvp)
|
|
nfsrv_vput(tvp);
|
|
VOP_ABORTOP(fromnd.ni_dvp, &fromnd.ni_cnd);
|
|
nfsrv_vrele(fromnd.ni_dvp);
|
|
nfsrv_vrele(fvp);
|
|
if (error == -1)
|
|
error = 0;
|
|
}
|
|
nfsrv_vrele(tond.ni_startdir);
|
|
FREE(tond.ni_cnd.cn_pnbuf, M_NAMEI);
|
|
out1:
|
|
if (fdirp) {
|
|
fdiraft_ret = VOP_GETATTR(fdirp, &fdiraft, cred, procp);
|
|
nfsrv_vrele(fdirp);
|
|
}
|
|
if (tdirp) {
|
|
tdiraft_ret = VOP_GETATTR(tdirp, &tdiraft, cred, procp);
|
|
nfsrv_vrele(tdirp);
|
|
}
|
|
nfsrv_vrele(fromnd.ni_startdir);
|
|
FREE(fromnd.ni_cnd.cn_pnbuf, M_NAMEI);
|
|
nfsm_reply(2 * NFSX_WCCDATA(v3));
|
|
if (v3) {
|
|
nfsm_srvwcc_data(fdirfor_ret, &fdirfor, fdiraft_ret, &fdiraft);
|
|
nfsm_srvwcc_data(tdirfor_ret, &tdirfor, tdiraft_ret, &tdiraft);
|
|
}
|
|
return (0);
|
|
|
|
nfsmout:
|
|
if (fdirp)
|
|
nfsrv_vrele(fdirp);
|
|
if (tdirp)
|
|
nfsrv_vrele(tdirp);
|
|
if (tond.ni_cnd.cn_nameiop) {
|
|
nfsrv_vrele(tond.ni_startdir);
|
|
FREE(tond.ni_cnd.cn_pnbuf, M_NAMEI);
|
|
}
|
|
if (fromnd.ni_cnd.cn_nameiop) {
|
|
nfsrv_vrele(fromnd.ni_startdir);
|
|
FREE(fromnd.ni_cnd.cn_pnbuf, M_NAMEI);
|
|
VOP_ABORTOP(fromnd.ni_dvp, &fromnd.ni_cnd);
|
|
nfsrv_vrele(fromnd.ni_dvp);
|
|
nfsrv_vrele(fvp);
|
|
}
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* nfs link service
|
|
*/
|
|
int
|
|
nfsrv_link(nfsd, slp, procp, mrq)
|
|
struct nfsrv_descript *nfsd;
|
|
struct nfssvc_sock *slp;
|
|
struct proc *procp;
|
|
struct mbuf **mrq;
|
|
{
|
|
struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
|
|
struct mbuf *nam = nfsd->nd_nam;
|
|
caddr_t dpos = nfsd->nd_dpos;
|
|
struct ucred *cred = &nfsd->nd_cr;
|
|
struct nameidata nd;
|
|
register u_long *tl;
|
|
register long t1;
|
|
caddr_t bpos;
|
|
int error = 0, rdonly, cache, len, dirfor_ret = 1, diraft_ret = 1;
|
|
int getret = 1, v3 = (nfsd->nd_flag & ND_NFSV3);
|
|
char *cp2;
|
|
struct mbuf *mb, *mreq;
|
|
struct vnode *vp, *xp, *dirp = (struct vnode *)0;
|
|
struct vattr dirfor, diraft, at;
|
|
nfsfh_t nfh, dnfh;
|
|
fhandle_t *fhp, *dfhp;
|
|
u_quad_t frev;
|
|
|
|
fhp = &nfh.fh_generic;
|
|
dfhp = &dnfh.fh_generic;
|
|
nfsm_srvmtofh(fhp);
|
|
nfsm_srvmtofh(dfhp);
|
|
nfsm_srvnamesiz(len);
|
|
if (error = nfsrv_fhtovp(fhp, FALSE, &vp, cred, slp, nam,
|
|
&rdonly, (nfsd->nd_flag & ND_KERBAUTH))) {
|
|
nfsm_reply(NFSX_POSTOPATTR(v3) + NFSX_WCCDATA(v3));
|
|
nfsm_srvpostop_attr(getret, &at);
|
|
nfsm_srvwcc_data(dirfor_ret, &dirfor, diraft_ret, &diraft);
|
|
return (0);
|
|
}
|
|
if (vp->v_type == VDIR && (error = suser(cred, (u_short *)0)))
|
|
goto out1;
|
|
nd.ni_cnd.cn_cred = cred;
|
|
nd.ni_cnd.cn_nameiop = CREATE;
|
|
nd.ni_cnd.cn_flags = LOCKPARENT;
|
|
error = nfs_namei(&nd, dfhp, len, slp, nam, &md, &dpos,
|
|
&dirp, procp, (nfsd->nd_flag & ND_KERBAUTH));
|
|
if (dirp) {
|
|
if (v3)
|
|
dirfor_ret = VOP_GETATTR(dirp, &dirfor, cred,
|
|
procp);
|
|
else {
|
|
nfsrv_vrele(dirp);
|
|
dirp = (struct vnode *)0;
|
|
}
|
|
}
|
|
if (error)
|
|
goto out1;
|
|
xp = nd.ni_vp;
|
|
if (xp != NULL) {
|
|
error = EEXIST;
|
|
goto out;
|
|
}
|
|
xp = nd.ni_dvp;
|
|
if (vp->v_mount != xp->v_mount)
|
|
error = EXDEV;
|
|
out:
|
|
if (!error) {
|
|
nqsrv_getl(vp, ND_WRITE);
|
|
nqsrv_getl(xp, ND_WRITE);
|
|
#if defined(__NetBSD__) || defined(__FreeBSD__)
|
|
error = VOP_LINK(nd.ni_dvp, vp, &nd.ni_cnd);
|
|
#else
|
|
error = VOP_LINK(vp, nd.ni_dvp, &nd.ni_cnd);
|
|
#endif
|
|
} else {
|
|
VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd);
|
|
if (nd.ni_dvp == nd.ni_vp)
|
|
nfsrv_vrele(nd.ni_dvp);
|
|
else
|
|
nfsrv_vput(nd.ni_dvp);
|
|
if (nd.ni_vp)
|
|
nfsrv_vrele(nd.ni_vp);
|
|
}
|
|
out1:
|
|
if (v3)
|
|
getret = VOP_GETATTR(vp, &at, cred, procp);
|
|
if (dirp) {
|
|
diraft_ret = VOP_GETATTR(dirp, &diraft, cred, procp);
|
|
nfsrv_vrele(dirp);
|
|
}
|
|
nfsrv_vrele(vp);
|
|
nfsm_reply(NFSX_POSTOPATTR(v3) + NFSX_WCCDATA(v3));
|
|
if (v3) {
|
|
nfsm_srvpostop_attr(getret, &at);
|
|
nfsm_srvwcc_data(dirfor_ret, &dirfor, diraft_ret, &diraft);
|
|
return (0);
|
|
}
|
|
nfsm_srvdone;
|
|
}
|
|
|
|
/*
|
|
* nfs symbolic link service
|
|
*/
|
|
int
|
|
nfsrv_symlink(nfsd, slp, procp, mrq)
|
|
struct nfsrv_descript *nfsd;
|
|
struct nfssvc_sock *slp;
|
|
struct proc *procp;
|
|
struct mbuf **mrq;
|
|
{
|
|
struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
|
|
struct mbuf *nam = nfsd->nd_nam;
|
|
caddr_t dpos = nfsd->nd_dpos;
|
|
struct ucred *cred = &nfsd->nd_cr;
|
|
struct vattr va, dirfor, diraft;
|
|
struct vnode *ovp;
|
|
struct nameidata nd;
|
|
register struct vattr *vap = &va;
|
|
register u_long *tl;
|
|
register long t1;
|
|
struct nfsv2_sattr *sp;
|
|
char *bpos, *pathcp = (char *)0, *cp2;
|
|
struct uio io;
|
|
struct iovec iv;
|
|
int error = 0, cache, len, len2, dirfor_ret = 1, diraft_ret = 1;
|
|
int v3 = (nfsd->nd_flag & ND_NFSV3);
|
|
struct mbuf *mb, *mreq, *mb2;
|
|
struct vnode *dirp = (struct vnode *)0;
|
|
nfsfh_t nfh;
|
|
fhandle_t *fhp;
|
|
u_quad_t frev;
|
|
int deallocobj = 0;
|
|
|
|
nd.ni_cnd.cn_nameiop = 0;
|
|
fhp = &nfh.fh_generic;
|
|
nfsm_srvmtofh(fhp);
|
|
nfsm_srvnamesiz(len);
|
|
nd.ni_cnd.cn_cred = cred;
|
|
nd.ni_cnd.cn_nameiop = CREATE;
|
|
nd.ni_cnd.cn_flags = LOCKPARENT | SAVESTART;
|
|
error = nfs_namei(&nd, fhp, len, slp, nam, &md, &dpos,
|
|
&dirp, procp, (nfsd->nd_flag & ND_KERBAUTH));
|
|
if (dirp) {
|
|
if (v3)
|
|
dirfor_ret = VOP_GETATTR(dirp, &dirfor, cred,
|
|
procp);
|
|
else {
|
|
nfsrv_vrele(dirp);
|
|
dirp = (struct vnode *)0;
|
|
}
|
|
}
|
|
if (error)
|
|
goto out;
|
|
VATTR_NULL(vap);
|
|
if (v3)
|
|
nfsm_srvsattr(vap);
|
|
nfsm_strsiz(len2, NFS_MAXPATHLEN);
|
|
MALLOC(pathcp, caddr_t, len2 + 1, M_TEMP, M_WAITOK);
|
|
iv.iov_base = pathcp;
|
|
iv.iov_len = len2;
|
|
io.uio_resid = len2;
|
|
io.uio_offset = 0;
|
|
io.uio_iov = &iv;
|
|
io.uio_iovcnt = 1;
|
|
io.uio_segflg = UIO_SYSSPACE;
|
|
io.uio_rw = UIO_READ;
|
|
io.uio_procp = (struct proc *)0;
|
|
nfsm_mtouio(&io, len2);
|
|
if (!v3) {
|
|
nfsm_dissect(sp, struct nfsv2_sattr *, NFSX_V2SATTR);
|
|
vap->va_mode = fxdr_unsigned(u_short, sp->sa_mode);
|
|
}
|
|
*(pathcp + len2) = '\0';
|
|
if (nd.ni_vp) {
|
|
nfsrv_vrele(nd.ni_startdir);
|
|
free(nd.ni_cnd.cn_pnbuf, M_NAMEI);
|
|
VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd);
|
|
if (nd.ni_dvp == nd.ni_vp)
|
|
nfsrv_vrele(nd.ni_dvp);
|
|
else
|
|
nfsrv_vput(nd.ni_dvp);
|
|
nfsrv_vrele(nd.ni_vp);
|
|
error = EEXIST;
|
|
goto out;
|
|
}
|
|
nqsrv_getl(nd.ni_dvp, ND_WRITE);
|
|
if ((ovp = nd.ni_vp) && (ovp->v_flag & VVMIO) && ovp->v_object)
|
|
deallocobj = 1;
|
|
error = VOP_SYMLINK(nd.ni_dvp, &nd.ni_vp, &nd.ni_cnd, vap, pathcp);
|
|
if (error == 0 && deallocobj)
|
|
vm_object_deallocate(ovp->v_object);
|
|
if (error)
|
|
nfsrv_vrele(nd.ni_startdir);
|
|
else {
|
|
if (v3) {
|
|
nd.ni_cnd.cn_nameiop = LOOKUP;
|
|
nd.ni_cnd.cn_flags &= ~(LOCKPARENT | SAVESTART | FOLLOW);
|
|
nd.ni_cnd.cn_flags |= (NOFOLLOW | LOCKLEAF);
|
|
nd.ni_cnd.cn_proc = procp;
|
|
nd.ni_cnd.cn_cred = cred;
|
|
error = lookup(&nd);
|
|
if (!error) {
|
|
bzero((caddr_t)fhp, sizeof(nfh));
|
|
fhp->fh_fsid = nd.ni_vp->v_mount->mnt_stat.f_fsid;
|
|
error = VFS_VPTOFH(nd.ni_vp, &fhp->fh_fid);
|
|
if (!error)
|
|
error = VOP_GETATTR(nd.ni_vp, vap, cred,
|
|
procp);
|
|
nfsrv_vput(nd.ni_vp);
|
|
}
|
|
} else
|
|
nfsrv_vrele(nd.ni_startdir);
|
|
FREE(nd.ni_cnd.cn_pnbuf, M_NAMEI);
|
|
}
|
|
out:
|
|
if (pathcp)
|
|
FREE(pathcp, M_TEMP);
|
|
if (dirp) {
|
|
diraft_ret = VOP_GETATTR(dirp, &diraft, cred, procp);
|
|
nfsrv_vrele(dirp);
|
|
}
|
|
nfsm_reply(NFSX_SRVFH(v3) + NFSX_POSTOPATTR(v3) + NFSX_WCCDATA(v3));
|
|
if (v3) {
|
|
if (!error) {
|
|
nfsm_srvpostop_fh(fhp);
|
|
nfsm_srvpostop_attr(0, vap);
|
|
}
|
|
nfsm_srvwcc_data(dirfor_ret, &dirfor, diraft_ret, &diraft);
|
|
}
|
|
return (0);
|
|
nfsmout:
|
|
if (nd.ni_cnd.cn_nameiop) {
|
|
nfsrv_vrele(nd.ni_startdir);
|
|
free(nd.ni_cnd.cn_pnbuf, M_NAMEI);
|
|
}
|
|
if (dirp)
|
|
nfsrv_vrele(dirp);
|
|
VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd);
|
|
if (nd.ni_dvp == nd.ni_vp)
|
|
nfsrv_vrele(nd.ni_dvp);
|
|
else
|
|
nfsrv_vput(nd.ni_dvp);
|
|
if (nd.ni_vp)
|
|
nfsrv_vrele(nd.ni_vp);
|
|
if (pathcp)
|
|
FREE(pathcp, M_TEMP);
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* nfs mkdir service
|
|
*/
|
|
int
|
|
nfsrv_mkdir(nfsd, slp, procp, mrq)
|
|
struct nfsrv_descript *nfsd;
|
|
struct nfssvc_sock *slp;
|
|
struct proc *procp;
|
|
struct mbuf **mrq;
|
|
{
|
|
struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
|
|
struct mbuf *nam = nfsd->nd_nam;
|
|
caddr_t dpos = nfsd->nd_dpos;
|
|
struct ucred *cred = &nfsd->nd_cr;
|
|
struct vattr va, dirfor, diraft;
|
|
register struct vattr *vap = &va;
|
|
register struct nfs_fattr *fp;
|
|
struct nameidata nd;
|
|
register caddr_t cp;
|
|
register u_long *tl;
|
|
register long t1;
|
|
caddr_t bpos;
|
|
int error = 0, cache, len, dirfor_ret = 1, diraft_ret = 1;
|
|
int v3 = (nfsd->nd_flag & ND_NFSV3);
|
|
char *cp2;
|
|
struct mbuf *mb, *mb2, *mreq;
|
|
struct vnode *vp, *dirp = (struct vnode *)0;
|
|
nfsfh_t nfh;
|
|
fhandle_t *fhp;
|
|
u_quad_t frev;
|
|
|
|
fhp = &nfh.fh_generic;
|
|
nfsm_srvmtofh(fhp);
|
|
nfsm_srvnamesiz(len);
|
|
nd.ni_cnd.cn_cred = cred;
|
|
nd.ni_cnd.cn_nameiop = CREATE;
|
|
nd.ni_cnd.cn_flags = LOCKPARENT;
|
|
error = nfs_namei(&nd, fhp, len, slp, nam, &md, &dpos,
|
|
&dirp, procp, (nfsd->nd_flag & ND_KERBAUTH));
|
|
if (dirp) {
|
|
if (v3)
|
|
dirfor_ret = VOP_GETATTR(dirp, &dirfor, cred,
|
|
procp);
|
|
else {
|
|
nfsrv_vrele(dirp);
|
|
dirp = (struct vnode *)0;
|
|
}
|
|
}
|
|
if (error) {
|
|
nfsm_reply(NFSX_WCCDATA(v3));
|
|
nfsm_srvwcc_data(dirfor_ret, &dirfor, diraft_ret, &diraft);
|
|
if (dirp)
|
|
nfsrv_vrele(dirp);
|
|
return (0);
|
|
}
|
|
VATTR_NULL(vap);
|
|
if (v3) {
|
|
nfsm_srvsattr(vap);
|
|
} else {
|
|
nfsm_dissect(tl, u_long *, NFSX_UNSIGNED);
|
|
vap->va_mode = nfstov_mode(*tl++);
|
|
}
|
|
vap->va_type = VDIR;
|
|
vp = nd.ni_vp;
|
|
if (vp != NULL) {
|
|
VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd);
|
|
if (nd.ni_dvp == vp)
|
|
nfsrv_vrele(nd.ni_dvp);
|
|
else
|
|
nfsrv_vput(nd.ni_dvp);
|
|
nfsrv_vrele(vp);
|
|
error = EEXIST;
|
|
goto out;
|
|
}
|
|
nqsrv_getl(nd.ni_dvp, ND_WRITE);
|
|
error = VOP_MKDIR(nd.ni_dvp, &nd.ni_vp, &nd.ni_cnd, vap);
|
|
if (!error) {
|
|
vp = nd.ni_vp;
|
|
bzero((caddr_t)fhp, sizeof(nfh));
|
|
fhp->fh_fsid = vp->v_mount->mnt_stat.f_fsid;
|
|
error = VFS_VPTOFH(vp, &fhp->fh_fid);
|
|
if (!error)
|
|
error = VOP_GETATTR(vp, vap, cred, procp);
|
|
nfsrv_vput(vp);
|
|
}
|
|
out:
|
|
if (dirp) {
|
|
diraft_ret = VOP_GETATTR(dirp, &diraft, cred, procp);
|
|
nfsrv_vrele(dirp);
|
|
}
|
|
nfsm_reply(NFSX_SRVFH(v3) + NFSX_POSTOPATTR(v3) + NFSX_WCCDATA(v3));
|
|
if (v3) {
|
|
if (!error) {
|
|
nfsm_srvpostop_fh(fhp);
|
|
nfsm_srvpostop_attr(0, vap);
|
|
}
|
|
nfsm_srvwcc_data(dirfor_ret, &dirfor, diraft_ret, &diraft);
|
|
} else {
|
|
nfsm_srvfhtom(fhp, v3);
|
|
nfsm_build(fp, struct nfs_fattr *, NFSX_V2FATTR);
|
|
nfsm_srvfillattr(vap, fp);
|
|
}
|
|
return (0);
|
|
nfsmout:
|
|
if (dirp)
|
|
nfsrv_vrele(dirp);
|
|
VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd);
|
|
if (nd.ni_dvp == nd.ni_vp)
|
|
nfsrv_vrele(nd.ni_dvp);
|
|
else
|
|
nfsrv_vput(nd.ni_dvp);
|
|
if (nd.ni_vp)
|
|
nfsrv_vrele(nd.ni_vp);
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* nfs rmdir service
|
|
*/
|
|
int
|
|
nfsrv_rmdir(nfsd, slp, procp, mrq)
|
|
struct nfsrv_descript *nfsd;
|
|
struct nfssvc_sock *slp;
|
|
struct proc *procp;
|
|
struct mbuf **mrq;
|
|
{
|
|
struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
|
|
struct mbuf *nam = nfsd->nd_nam;
|
|
caddr_t dpos = nfsd->nd_dpos;
|
|
struct ucred *cred = &nfsd->nd_cr;
|
|
register u_long *tl;
|
|
register long t1;
|
|
caddr_t bpos;
|
|
int error = 0, cache, len, dirfor_ret = 1, diraft_ret = 1;
|
|
int v3 = (nfsd->nd_flag & ND_NFSV3);
|
|
char *cp2;
|
|
struct mbuf *mb, *mreq;
|
|
struct vnode *vp, *dirp = (struct vnode *)0;
|
|
struct vattr dirfor, diraft;
|
|
nfsfh_t nfh;
|
|
fhandle_t *fhp;
|
|
struct nameidata nd;
|
|
u_quad_t frev;
|
|
|
|
fhp = &nfh.fh_generic;
|
|
nfsm_srvmtofh(fhp);
|
|
nfsm_srvnamesiz(len);
|
|
nd.ni_cnd.cn_cred = cred;
|
|
nd.ni_cnd.cn_nameiop = DELETE;
|
|
nd.ni_cnd.cn_flags = LOCKPARENT | LOCKLEAF;
|
|
error = nfs_namei(&nd, fhp, len, slp, nam, &md, &dpos,
|
|
&dirp, procp, (nfsd->nd_flag & ND_KERBAUTH));
|
|
if (dirp) {
|
|
if (v3)
|
|
dirfor_ret = VOP_GETATTR(dirp, &dirfor, cred,
|
|
procp);
|
|
else {
|
|
nfsrv_vrele(dirp);
|
|
dirp = (struct vnode *)0;
|
|
}
|
|
}
|
|
if (error) {
|
|
nfsm_reply(NFSX_WCCDATA(v3));
|
|
nfsm_srvwcc_data(dirfor_ret, &dirfor, diraft_ret, &diraft);
|
|
if (dirp)
|
|
nfsrv_vrele(dirp);
|
|
return (0);
|
|
}
|
|
vp = nd.ni_vp;
|
|
if (vp->v_type != VDIR) {
|
|
error = ENOTDIR;
|
|
goto out;
|
|
}
|
|
/*
|
|
* No rmdir "." please.
|
|
*/
|
|
if (nd.ni_dvp == vp) {
|
|
error = EINVAL;
|
|
goto out;
|
|
}
|
|
/*
|
|
* The root of a mounted filesystem cannot be deleted.
|
|
*/
|
|
if (vp->v_flag & VROOT)
|
|
error = EBUSY;
|
|
out:
|
|
if (!error) {
|
|
nqsrv_getl(nd.ni_dvp, ND_WRITE);
|
|
nqsrv_getl(vp, ND_WRITE);
|
|
error = VOP_RMDIR(nd.ni_dvp, nd.ni_vp, &nd.ni_cnd);
|
|
} else {
|
|
VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd);
|
|
if (nd.ni_dvp == nd.ni_vp)
|
|
nfsrv_vrele(nd.ni_dvp);
|
|
else
|
|
nfsrv_vput(nd.ni_dvp);
|
|
nfsrv_vput(vp);
|
|
}
|
|
if (dirp) {
|
|
diraft_ret = VOP_GETATTR(dirp, &diraft, cred, procp);
|
|
nfsrv_vrele(dirp);
|
|
}
|
|
nfsm_reply(NFSX_WCCDATA(v3));
|
|
if (v3) {
|
|
nfsm_srvwcc_data(dirfor_ret, &dirfor, diraft_ret, &diraft);
|
|
return (0);
|
|
}
|
|
nfsm_srvdone;
|
|
}
|
|
|
|
/*
|
|
* nfs readdir service
|
|
* - mallocs what it thinks is enough to read
|
|
* count rounded up to a multiple of NFS_DIRBLKSIZ <= NFS_MAXREADDIR
|
|
* - calls VOP_READDIR()
|
|
* - loops around building the reply
|
|
* if the output generated exceeds count break out of loop
|
|
* The nfsm_clget macro is used here so that the reply will be packed
|
|
* tightly in mbuf clusters.
|
|
* - it only knows that it has encountered eof when the VOP_READDIR()
|
|
* reads nothing
|
|
* - as such one readdir rpc will return eof false although you are there
|
|
* and then the next will return eof
|
|
* - it trims out records with d_fileno == 0
|
|
* this doesn't matter for Unix clients, but they might confuse clients
|
|
* for other os'.
|
|
* NB: It is tempting to set eof to true if the VOP_READDIR() reads less
|
|
* than requested, but this may not apply to all filesystems. For
|
|
* example, client NFS does not { although it is never remote mounted
|
|
* anyhow }
|
|
* The alternate call nfsrv_readdirplus() does lookups as well.
|
|
* PS: The NFS protocol spec. does not clarify what the "count" byte
|
|
* argument is a count of.. just name strings and file id's or the
|
|
* entire reply rpc or ...
|
|
* I tried just file name and id sizes and it confused the Sun client,
|
|
* so I am using the full rpc size now. The "paranoia.." comment refers
|
|
* to including the status longwords that are not a part of the dir.
|
|
* "entry" structures, but are in the rpc.
|
|
*/
|
|
struct flrep {
|
|
nfsuint64 fl_off;
|
|
u_long fl_postopok;
|
|
u_long fl_fattr[NFSX_V3FATTR / sizeof (u_long)];
|
|
u_long fl_fhok;
|
|
u_long fl_fhsize;
|
|
u_long fl_nfh[NFSX_V3FH / sizeof (u_long)];
|
|
};
|
|
|
|
int
|
|
nfsrv_readdir(nfsd, slp, procp, mrq)
|
|
struct nfsrv_descript *nfsd;
|
|
struct nfssvc_sock *slp;
|
|
struct proc *procp;
|
|
struct mbuf **mrq;
|
|
{
|
|
struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
|
|
struct mbuf *nam = nfsd->nd_nam;
|
|
caddr_t dpos = nfsd->nd_dpos;
|
|
struct ucred *cred = &nfsd->nd_cr;
|
|
register char *bp, *be;
|
|
register struct mbuf *mp;
|
|
register struct dirent *dp;
|
|
register caddr_t cp;
|
|
register u_long *tl;
|
|
register long t1;
|
|
caddr_t bpos;
|
|
struct mbuf *mb, *mb2, *mreq, *mp2;
|
|
char *cpos, *cend, *cp2, *rbuf;
|
|
struct vnode *vp;
|
|
struct vattr at;
|
|
nfsfh_t nfh;
|
|
fhandle_t *fhp;
|
|
struct uio io;
|
|
struct iovec iv;
|
|
int len, nlen, rem, xfer, tsiz, i, error = 0, getret = 1;
|
|
int siz, cnt, fullsiz, eofflag, rdonly, cache, ncookies;
|
|
int v3 = (nfsd->nd_flag & ND_NFSV3);
|
|
u_quad_t frev, off, toff, verf;
|
|
u_int *cookies = NULL, *cookiep;
|
|
|
|
fhp = &nfh.fh_generic;
|
|
nfsm_srvmtofh(fhp);
|
|
if (v3) {
|
|
nfsm_dissect(tl, u_long *, 5 * NFSX_UNSIGNED);
|
|
fxdr_hyper(tl, &toff);
|
|
tl += 2;
|
|
fxdr_hyper(tl, &verf);
|
|
tl += 2;
|
|
} else {
|
|
nfsm_dissect(tl, u_long *, 2 * NFSX_UNSIGNED);
|
|
toff = fxdr_unsigned(u_quad_t, *tl++);
|
|
}
|
|
off = toff;
|
|
cnt = fxdr_unsigned(int, *tl);
|
|
siz = ((cnt + DIRBLKSIZ - 1) & ~(DIRBLKSIZ - 1));
|
|
xfer = NFS_SRVMAXDATA(nfsd);
|
|
if (siz > xfer)
|
|
siz = xfer;
|
|
fullsiz = siz;
|
|
if (error = nfsrv_fhtovp(fhp, 1, &vp, cred, slp, nam,
|
|
&rdonly, (nfsd->nd_flag & ND_KERBAUTH))) {
|
|
nfsm_reply(NFSX_UNSIGNED);
|
|
nfsm_srvpostop_attr(getret, &at);
|
|
return (0);
|
|
}
|
|
nqsrv_getl(vp, ND_READ);
|
|
if (v3) {
|
|
error = getret = VOP_GETATTR(vp, &at, cred, procp);
|
|
if (!error && toff && verf != at.va_filerev)
|
|
error = NFSERR_BAD_COOKIE;
|
|
}
|
|
if (!error)
|
|
error = nfsrv_access(vp, VEXEC, cred, rdonly, procp);
|
|
if (error) {
|
|
nfsrv_vput(vp);
|
|
nfsm_reply(NFSX_POSTOPATTR(v3));
|
|
nfsm_srvpostop_attr(getret, &at);
|
|
return (0);
|
|
}
|
|
VOP_UNLOCK(vp);
|
|
MALLOC(rbuf, caddr_t, siz, M_TEMP, M_WAITOK);
|
|
#ifdef __NetBSD__
|
|
ncookies = siz / (5 * NFSX_UNSIGNED); /*7 for V3, but it's an est. so*/
|
|
MALLOC(cookies, u_long *, ncookies * sizeof (u_long *), M_TEMP,
|
|
M_WAITOK);
|
|
#endif
|
|
again:
|
|
iv.iov_base = rbuf;
|
|
iv.iov_len = fullsiz;
|
|
io.uio_iov = &iv;
|
|
io.uio_iovcnt = 1;
|
|
io.uio_offset = (off_t)off;
|
|
io.uio_resid = fullsiz;
|
|
io.uio_segflg = UIO_SYSSPACE;
|
|
io.uio_rw = UIO_READ;
|
|
io.uio_procp = (struct proc *)0;
|
|
eofflag = 0;
|
|
VOP_LOCK(vp);
|
|
#ifndef __NetBSD__
|
|
if (cookies) {
|
|
free((caddr_t)cookies, M_TEMP);
|
|
cookies = NULL;
|
|
}
|
|
error = VOP_READDIR(vp, &io, cred, &eofflag, &ncookies, &cookies);
|
|
#else
|
|
error = VOP_READDIR(vp, &io, cred, &eofflag, cookies, ncookies);
|
|
#endif
|
|
off = (off_t)io.uio_offset;
|
|
if (!cookies && !error)
|
|
error = NFSERR_PERM;
|
|
if (v3) {
|
|
getret = VOP_GETATTR(vp, &at, cred, procp);
|
|
if (!error)
|
|
error = getret;
|
|
}
|
|
VOP_UNLOCK(vp);
|
|
if (error) {
|
|
nfsrv_vrele(vp);
|
|
free((caddr_t)rbuf, M_TEMP);
|
|
if (cookies)
|
|
free((caddr_t)cookies, M_TEMP);
|
|
nfsm_reply(NFSX_POSTOPATTR(v3));
|
|
nfsm_srvpostop_attr(getret, &at);
|
|
return (0);
|
|
}
|
|
if (io.uio_resid) {
|
|
siz -= io.uio_resid;
|
|
|
|
/*
|
|
* If nothing read, return eof
|
|
* rpc reply
|
|
*/
|
|
if (siz == 0) {
|
|
nfsrv_vrele(vp);
|
|
nfsm_reply(NFSX_POSTOPATTR(v3) + NFSX_COOKIEVERF(v3) +
|
|
2 * NFSX_UNSIGNED);
|
|
if (v3) {
|
|
nfsm_srvpostop_attr(getret, &at);
|
|
nfsm_build(tl, u_long *, 4 * NFSX_UNSIGNED);
|
|
txdr_hyper(&at.va_filerev, tl);
|
|
tl += 2;
|
|
} else
|
|
nfsm_build(tl, u_long *, 2 * NFSX_UNSIGNED);
|
|
*tl++ = nfs_false;
|
|
*tl = nfs_true;
|
|
FREE((caddr_t)rbuf, M_TEMP);
|
|
FREE((caddr_t)cookies, M_TEMP);
|
|
return (0);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Check for degenerate cases of nothing useful read.
|
|
* If so go try again
|
|
*/
|
|
cpos = rbuf;
|
|
cend = rbuf + siz;
|
|
dp = (struct dirent *)cpos;
|
|
cookiep = cookies;
|
|
#ifdef __FreeBSD__
|
|
/*
|
|
* For some reason FreeBSD's ufs_readdir() chooses to back the
|
|
* directory offset up to a block boundary, so it is necessary to
|
|
* skip over the records that preceed the requested offset. This
|
|
* requires the assumption that file offset cookies monotonically
|
|
* increase.
|
|
*/
|
|
while (cpos < cend && ncookies > 0 &&
|
|
(dp->d_fileno == 0 || ((u_quad_t)(*cookiep)) <= toff)) {
|
|
#else
|
|
while (dp->d_fileno == 0 && cpos < cend && ncookies > 0) {
|
|
#endif
|
|
cpos += dp->d_reclen;
|
|
dp = (struct dirent *)cpos;
|
|
cookiep++;
|
|
ncookies--;
|
|
}
|
|
if (cpos >= cend || ncookies == 0) {
|
|
toff = off;
|
|
siz = fullsiz;
|
|
goto again;
|
|
}
|
|
|
|
len = 3 * NFSX_UNSIGNED; /* paranoia, probably can be 0 */
|
|
nfsm_reply(NFSX_POSTOPATTR(v3) + NFSX_COOKIEVERF(v3) + siz);
|
|
if (v3) {
|
|
nfsm_srvpostop_attr(getret, &at);
|
|
nfsm_build(tl, u_long *, 2 * NFSX_UNSIGNED);
|
|
txdr_hyper(&at.va_filerev, tl);
|
|
}
|
|
mp = mp2 = mb;
|
|
bp = bpos;
|
|
be = bp + M_TRAILINGSPACE(mp);
|
|
|
|
/* Loop through the records and build reply */
|
|
while (cpos < cend && ncookies > 0) {
|
|
if (dp->d_fileno != 0) {
|
|
nlen = dp->d_namlen;
|
|
rem = nfsm_rndup(nlen)-nlen;
|
|
len += (4 * NFSX_UNSIGNED + nlen + rem);
|
|
if (v3)
|
|
len += 2 * NFSX_UNSIGNED;
|
|
if (len > cnt) {
|
|
eofflag = 0;
|
|
break;
|
|
}
|
|
/*
|
|
* Build the directory record xdr from
|
|
* the dirent entry.
|
|
*/
|
|
nfsm_clget;
|
|
*tl = nfs_true;
|
|
bp += NFSX_UNSIGNED;
|
|
if (v3) {
|
|
nfsm_clget;
|
|
*tl = 0;
|
|
bp += NFSX_UNSIGNED;
|
|
}
|
|
nfsm_clget;
|
|
*tl = txdr_unsigned(dp->d_fileno);
|
|
bp += NFSX_UNSIGNED;
|
|
nfsm_clget;
|
|
*tl = txdr_unsigned(nlen);
|
|
bp += NFSX_UNSIGNED;
|
|
|
|
/* And loop around copying the name */
|
|
xfer = nlen;
|
|
cp = dp->d_name;
|
|
while (xfer > 0) {
|
|
nfsm_clget;
|
|
if ((bp+xfer) > be)
|
|
tsiz = be-bp;
|
|
else
|
|
tsiz = xfer;
|
|
bcopy(cp, bp, tsiz);
|
|
bp += tsiz;
|
|
xfer -= tsiz;
|
|
if (xfer > 0)
|
|
cp += tsiz;
|
|
}
|
|
/* And null pad to a long boundary */
|
|
for (i = 0; i < rem; i++)
|
|
*bp++ = '\0';
|
|
nfsm_clget;
|
|
|
|
/* Finish off the record */
|
|
if (v3) {
|
|
*tl = 0;
|
|
bp += NFSX_UNSIGNED;
|
|
nfsm_clget;
|
|
}
|
|
*tl = txdr_unsigned(*cookiep);
|
|
bp += NFSX_UNSIGNED;
|
|
}
|
|
cpos += dp->d_reclen;
|
|
dp = (struct dirent *)cpos;
|
|
cookiep++;
|
|
ncookies--;
|
|
}
|
|
nfsrv_vrele(vp);
|
|
nfsm_clget;
|
|
*tl = nfs_false;
|
|
bp += NFSX_UNSIGNED;
|
|
nfsm_clget;
|
|
if (eofflag)
|
|
*tl = nfs_true;
|
|
else
|
|
*tl = nfs_false;
|
|
bp += NFSX_UNSIGNED;
|
|
if (mp != mb) {
|
|
if (bp < be)
|
|
mp->m_len = bp - mtod(mp, caddr_t);
|
|
} else
|
|
mp->m_len += bp - bpos;
|
|
FREE((caddr_t)rbuf, M_TEMP);
|
|
FREE((caddr_t)cookies, M_TEMP);
|
|
nfsm_srvdone;
|
|
}
|
|
|
|
int
|
|
nfsrv_readdirplus(nfsd, slp, procp, mrq)
|
|
struct nfsrv_descript *nfsd;
|
|
struct nfssvc_sock *slp;
|
|
struct proc *procp;
|
|
struct mbuf **mrq;
|
|
{
|
|
struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
|
|
struct mbuf *nam = nfsd->nd_nam;
|
|
caddr_t dpos = nfsd->nd_dpos;
|
|
struct ucred *cred = &nfsd->nd_cr;
|
|
register char *bp, *be;
|
|
register struct mbuf *mp;
|
|
register struct dirent *dp;
|
|
register caddr_t cp;
|
|
register u_long *tl;
|
|
register long t1;
|
|
caddr_t bpos;
|
|
struct mbuf *mb, *mb2, *mreq, *mp2;
|
|
char *cpos, *cend, *cp2, *rbuf;
|
|
struct vnode *vp, *nvp;
|
|
struct flrep fl;
|
|
nfsfh_t nfh;
|
|
fhandle_t *fhp, *nfhp = (fhandle_t *)fl.fl_nfh;
|
|
struct uio io;
|
|
struct iovec iv;
|
|
struct vattr va, at, *vap = &va;
|
|
struct nfs_fattr *fp;
|
|
int len, nlen, rem, xfer, tsiz, i, error = 0, getret = 1;
|
|
int siz, cnt, fullsiz, eofflag, rdonly, cache, dirlen, ncookies;
|
|
u_quad_t frev, off, toff, verf;
|
|
u_int *cookies = NULL, *cookiep;
|
|
|
|
fhp = &nfh.fh_generic;
|
|
nfsm_srvmtofh(fhp);
|
|
nfsm_dissect(tl, u_long *, 6 * NFSX_UNSIGNED);
|
|
fxdr_hyper(tl, &toff);
|
|
tl += 2;
|
|
fxdr_hyper(tl, &verf);
|
|
tl += 2;
|
|
siz = fxdr_unsigned(int, *tl++);
|
|
cnt = fxdr_unsigned(int, *tl);
|
|
off = toff;
|
|
siz = ((siz + DIRBLKSIZ - 1) & ~(DIRBLKSIZ - 1));
|
|
xfer = NFS_SRVMAXDATA(nfsd);
|
|
if (siz > xfer)
|
|
siz = xfer;
|
|
fullsiz = siz;
|
|
if (error = nfsrv_fhtovp(fhp, 1, &vp, cred, slp, nam,
|
|
&rdonly, (nfsd->nd_flag & ND_KERBAUTH))) {
|
|
nfsm_reply(NFSX_UNSIGNED);
|
|
nfsm_srvpostop_attr(getret, &at);
|
|
return (0);
|
|
}
|
|
error = getret = VOP_GETATTR(vp, &at, cred, procp);
|
|
if (!error && toff && verf != at.va_filerev)
|
|
error = NFSERR_BAD_COOKIE;
|
|
if (!error) {
|
|
nqsrv_getl(vp, ND_READ);
|
|
error = nfsrv_access(vp, VEXEC, cred, rdonly, procp);
|
|
}
|
|
if (error) {
|
|
nfsrv_vput(vp);
|
|
nfsm_reply(NFSX_V3POSTOPATTR);
|
|
nfsm_srvpostop_attr(getret, &at);
|
|
return (0);
|
|
}
|
|
VOP_UNLOCK(vp);
|
|
MALLOC(rbuf, caddr_t, siz, M_TEMP, M_WAITOK);
|
|
#ifdef __NetBSD__
|
|
ncookies = siz / (7 * NFSX_UNSIGNED);
|
|
MALLOC(cookies, u_long *, ncookies * sizeof (u_long *), M_TEMP,
|
|
M_WAITOK);
|
|
#endif
|
|
again:
|
|
iv.iov_base = rbuf;
|
|
iv.iov_len = fullsiz;
|
|
io.uio_iov = &iv;
|
|
io.uio_iovcnt = 1;
|
|
io.uio_offset = (off_t)off;
|
|
io.uio_resid = fullsiz;
|
|
io.uio_segflg = UIO_SYSSPACE;
|
|
io.uio_rw = UIO_READ;
|
|
io.uio_procp = (struct proc *)0;
|
|
eofflag = 0;
|
|
VOP_LOCK(vp);
|
|
#ifndef __NetBSD__
|
|
if (cookies) {
|
|
free((caddr_t)cookies, M_TEMP);
|
|
cookies = NULL;
|
|
}
|
|
error = VOP_READDIR(vp, &io, cred, &eofflag, &ncookies, &cookies);
|
|
#else
|
|
error = VOP_READDIR(vp, &io, cred, &eofflag, cookies, ncookies);
|
|
#endif
|
|
off = (u_quad_t)io.uio_offset;
|
|
getret = VOP_GETATTR(vp, &at, cred, procp);
|
|
VOP_UNLOCK(vp);
|
|
if (!cookies && !error)
|
|
error = NFSERR_PERM;
|
|
if (!error)
|
|
error = getret;
|
|
if (error) {
|
|
nfsrv_vrele(vp);
|
|
if (cookies)
|
|
free((caddr_t)cookies, M_TEMP);
|
|
free((caddr_t)rbuf, M_TEMP);
|
|
nfsm_reply(NFSX_V3POSTOPATTR);
|
|
nfsm_srvpostop_attr(getret, &at);
|
|
return (0);
|
|
}
|
|
if (io.uio_resid) {
|
|
siz -= io.uio_resid;
|
|
|
|
/*
|
|
* If nothing read, return eof
|
|
* rpc reply
|
|
*/
|
|
if (siz == 0) {
|
|
nfsrv_vrele(vp);
|
|
nfsm_reply(NFSX_V3POSTOPATTR + NFSX_V3COOKIEVERF +
|
|
2 * NFSX_UNSIGNED);
|
|
nfsm_srvpostop_attr(getret, &at);
|
|
nfsm_build(tl, u_long *, 4 * NFSX_UNSIGNED);
|
|
txdr_hyper(&at.va_filerev, tl);
|
|
tl += 2;
|
|
*tl++ = nfs_false;
|
|
*tl = nfs_true;
|
|
FREE((caddr_t)cookies, M_TEMP);
|
|
FREE((caddr_t)rbuf, M_TEMP);
|
|
return (0);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Check for degenerate cases of nothing useful read.
|
|
* If so go try again
|
|
*/
|
|
cpos = rbuf;
|
|
cend = rbuf + siz;
|
|
dp = (struct dirent *)cpos;
|
|
cookiep = cookies;
|
|
#ifdef __FreeBSD__
|
|
/*
|
|
* For some reason FreeBSD's ufs_readdir() chooses to back the
|
|
* directory offset up to a block boundary, so it is necessary to
|
|
* skip over the records that preceed the requested offset. This
|
|
* requires the assumption that file offset cookies monotonically
|
|
* increase.
|
|
*/
|
|
while (cpos < cend && ncookies > 0 &&
|
|
(dp->d_fileno == 0 || ((u_quad_t)(*cookiep)) <= toff)) {
|
|
#else
|
|
while (dp->d_fileno == 0 && cpos < cend && ncookies > 0) {
|
|
#endif
|
|
cpos += dp->d_reclen;
|
|
dp = (struct dirent *)cpos;
|
|
cookiep++;
|
|
ncookies--;
|
|
}
|
|
if (cpos >= cend || ncookies == 0) {
|
|
toff = off;
|
|
siz = fullsiz;
|
|
goto again;
|
|
}
|
|
|
|
/*
|
|
* Probe one of the directory entries to see if the filesystem
|
|
* supports VGET.
|
|
*/
|
|
if (VFS_VGET(vp->v_mount, dp->d_fileno, &nvp) == EOPNOTSUPP) {
|
|
error = NFSERR_NOTSUPP;
|
|
nfsrv_vrele(vp);
|
|
free((caddr_t)cookies, M_TEMP);
|
|
free((caddr_t)rbuf, M_TEMP);
|
|
nfsm_reply(NFSX_V3POSTOPATTR);
|
|
nfsm_srvpostop_attr(getret, &at);
|
|
return (0);
|
|
}
|
|
|
|
dirlen = len = NFSX_V3POSTOPATTR + NFSX_V3COOKIEVERF + 2 * NFSX_UNSIGNED;
|
|
nfsm_reply(cnt);
|
|
nfsm_srvpostop_attr(getret, &at);
|
|
nfsm_build(tl, u_long *, 2 * NFSX_UNSIGNED);
|
|
txdr_hyper(&at.va_filerev, tl);
|
|
mp = mp2 = mb;
|
|
bp = bpos;
|
|
be = bp + M_TRAILINGSPACE(mp);
|
|
|
|
/* Loop through the records and build reply */
|
|
while (cpos < cend && ncookies > 0) {
|
|
if (dp->d_fileno != 0) {
|
|
nlen = dp->d_namlen;
|
|
rem = nfsm_rndup(nlen)-nlen;
|
|
|
|
/*
|
|
* For readdir_and_lookup get the vnode using
|
|
* the file number.
|
|
*/
|
|
if (VFS_VGET(vp->v_mount, dp->d_fileno, &nvp))
|
|
goto invalid;
|
|
bzero((caddr_t)nfhp, NFSX_V3FH);
|
|
nfhp->fh_fsid =
|
|
nvp->v_mount->mnt_stat.f_fsid;
|
|
if (VFS_VPTOFH(nvp, &nfhp->fh_fid)) {
|
|
vput(nvp);
|
|
goto invalid;
|
|
}
|
|
if (VOP_GETATTR(nvp, vap, cred, procp)) {
|
|
vput(nvp);
|
|
goto invalid;
|
|
}
|
|
vput(nvp);
|
|
|
|
/*
|
|
* If either the dircount or maxcount will be
|
|
* exceeded, get out now. Both of these lengths
|
|
* are calculated conservatively, including all
|
|
* XDR overheads.
|
|
*/
|
|
len += (7 * NFSX_UNSIGNED + nlen + rem + NFSX_V3FH +
|
|
NFSX_V3POSTOPATTR);
|
|
dirlen += (6 * NFSX_UNSIGNED + nlen + rem);
|
|
if (len > cnt || dirlen > fullsiz) {
|
|
eofflag = 0;
|
|
break;
|
|
}
|
|
|
|
/*
|
|
* Build the directory record xdr from
|
|
* the dirent entry.
|
|
*/
|
|
fp = (struct nfs_fattr *)&fl.fl_fattr;
|
|
nfsm_srvfillattr(vap, fp);
|
|
fl.fl_fhsize = txdr_unsigned(NFSX_V3FH);
|
|
fl.fl_fhok = nfs_true;
|
|
fl.fl_postopok = nfs_true;
|
|
fl.fl_off.nfsuquad[0] = 0;
|
|
fl.fl_off.nfsuquad[1] = txdr_unsigned(*cookiep);
|
|
|
|
nfsm_clget;
|
|
*tl = nfs_true;
|
|
bp += NFSX_UNSIGNED;
|
|
nfsm_clget;
|
|
*tl = 0;
|
|
bp += NFSX_UNSIGNED;
|
|
nfsm_clget;
|
|
*tl = txdr_unsigned(dp->d_fileno);
|
|
bp += NFSX_UNSIGNED;
|
|
nfsm_clget;
|
|
*tl = txdr_unsigned(nlen);
|
|
bp += NFSX_UNSIGNED;
|
|
|
|
/* And loop around copying the name */
|
|
xfer = nlen;
|
|
cp = dp->d_name;
|
|
while (xfer > 0) {
|
|
nfsm_clget;
|
|
if ((bp + xfer) > be)
|
|
tsiz = be - bp;
|
|
else
|
|
tsiz = xfer;
|
|
bcopy(cp, bp, tsiz);
|
|
bp += tsiz;
|
|
xfer -= tsiz;
|
|
if (xfer > 0)
|
|
cp += tsiz;
|
|
}
|
|
/* And null pad to a long boundary */
|
|
for (i = 0; i < rem; i++)
|
|
*bp++ = '\0';
|
|
|
|
/*
|
|
* Now copy the flrep structure out.
|
|
*/
|
|
xfer = sizeof (struct flrep);
|
|
cp = (caddr_t)&fl;
|
|
while (xfer > 0) {
|
|
nfsm_clget;
|
|
if ((bp + xfer) > be)
|
|
tsiz = be - bp;
|
|
else
|
|
tsiz = xfer;
|
|
bcopy(cp, bp, tsiz);
|
|
bp += tsiz;
|
|
xfer -= tsiz;
|
|
if (xfer > 0)
|
|
cp += tsiz;
|
|
}
|
|
}
|
|
invalid:
|
|
cpos += dp->d_reclen;
|
|
dp = (struct dirent *)cpos;
|
|
cookiep++;
|
|
ncookies--;
|
|
}
|
|
nfsrv_vrele(vp);
|
|
nfsm_clget;
|
|
*tl = nfs_false;
|
|
bp += NFSX_UNSIGNED;
|
|
nfsm_clget;
|
|
if (eofflag)
|
|
*tl = nfs_true;
|
|
else
|
|
*tl = nfs_false;
|
|
bp += NFSX_UNSIGNED;
|
|
if (mp != mb) {
|
|
if (bp < be)
|
|
mp->m_len = bp - mtod(mp, caddr_t);
|
|
} else
|
|
mp->m_len += bp - bpos;
|
|
FREE((caddr_t)cookies, M_TEMP);
|
|
FREE((caddr_t)rbuf, M_TEMP);
|
|
nfsm_srvdone;
|
|
}
|
|
|
|
/*
|
|
* nfs commit service
|
|
*/
|
|
int
|
|
nfsrv_commit(nfsd, slp, procp, mrq)
|
|
struct nfsrv_descript *nfsd;
|
|
struct nfssvc_sock *slp;
|
|
struct proc *procp;
|
|
struct mbuf **mrq;
|
|
{
|
|
struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
|
|
struct mbuf *nam = nfsd->nd_nam;
|
|
caddr_t dpos = nfsd->nd_dpos;
|
|
struct ucred *cred = &nfsd->nd_cr;
|
|
struct vattr bfor, aft;
|
|
struct vnode *vp;
|
|
nfsfh_t nfh;
|
|
fhandle_t *fhp;
|
|
register u_long *tl;
|
|
register long t1;
|
|
caddr_t bpos;
|
|
int error = 0, rdonly, for_ret = 1, aft_ret = 1, cnt, cache;
|
|
char *cp2;
|
|
struct mbuf *mb, *mb2, *mreq;
|
|
u_quad_t frev, off;
|
|
|
|
#ifndef nolint
|
|
cache = 0;
|
|
#endif
|
|
fhp = &nfh.fh_generic;
|
|
nfsm_srvmtofh(fhp);
|
|
nfsm_dissect(tl, u_long *, 3 * NFSX_UNSIGNED);
|
|
|
|
/*
|
|
* XXX At this time VOP_FSYNC() does not accept offset and byte
|
|
* count parameters, so these arguments are useless (someday maybe).
|
|
*/
|
|
fxdr_hyper(tl, &off);
|
|
tl += 2;
|
|
cnt = fxdr_unsigned(int, *tl);
|
|
if (error = nfsrv_fhtovp(fhp, 1, &vp, cred, slp, nam,
|
|
&rdonly, (nfsd->nd_flag & ND_KERBAUTH))) {
|
|
nfsm_reply(2 * NFSX_UNSIGNED);
|
|
nfsm_srvwcc_data(for_ret, &bfor, aft_ret, &aft);
|
|
return (0);
|
|
}
|
|
for_ret = VOP_GETATTR(vp, &bfor, cred, procp);
|
|
error = VOP_FSYNC(vp, cred, MNT_WAIT, procp);
|
|
aft_ret = VOP_GETATTR(vp, &aft, cred, procp);
|
|
nfsrv_vput(vp);
|
|
nfsm_reply(NFSX_V3WCCDATA + NFSX_V3WRITEVERF);
|
|
nfsm_srvwcc_data(for_ret, &bfor, aft_ret, &aft);
|
|
if (!error) {
|
|
nfsm_build(tl, u_long *, NFSX_V3WRITEVERF);
|
|
*tl++ = txdr_unsigned(boottime.tv_sec);
|
|
*tl = txdr_unsigned(boottime.tv_usec);
|
|
} else
|
|
return (0);
|
|
nfsm_srvdone;
|
|
}
|
|
|
|
/*
|
|
* nfs statfs service
|
|
*/
|
|
int
|
|
nfsrv_statfs(nfsd, slp, procp, mrq)
|
|
struct nfsrv_descript *nfsd;
|
|
struct nfssvc_sock *slp;
|
|
struct proc *procp;
|
|
struct mbuf **mrq;
|
|
{
|
|
struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
|
|
struct mbuf *nam = nfsd->nd_nam;
|
|
caddr_t dpos = nfsd->nd_dpos;
|
|
struct ucred *cred = &nfsd->nd_cr;
|
|
register struct statfs *sf;
|
|
register struct nfs_statfs *sfp;
|
|
register u_long *tl;
|
|
register long t1;
|
|
caddr_t bpos;
|
|
int error = 0, rdonly, cache, getret = 1;
|
|
int v3 = (nfsd->nd_flag & ND_NFSV3);
|
|
char *cp2;
|
|
struct mbuf *mb, *mb2, *mreq;
|
|
struct vnode *vp;
|
|
struct vattr at;
|
|
nfsfh_t nfh;
|
|
fhandle_t *fhp;
|
|
struct statfs statfs;
|
|
u_quad_t frev, tval;
|
|
|
|
#ifndef nolint
|
|
cache = 0;
|
|
#endif
|
|
fhp = &nfh.fh_generic;
|
|
nfsm_srvmtofh(fhp);
|
|
if (error = nfsrv_fhtovp(fhp, 1, &vp, cred, slp, nam,
|
|
&rdonly, (nfsd->nd_flag & ND_KERBAUTH))) {
|
|
nfsm_reply(NFSX_UNSIGNED);
|
|
nfsm_srvpostop_attr(getret, &at);
|
|
return (0);
|
|
}
|
|
sf = &statfs;
|
|
error = VFS_STATFS(vp->v_mount, sf, procp);
|
|
getret = VOP_GETATTR(vp, &at, cred, procp);
|
|
nfsrv_vput(vp);
|
|
nfsm_reply(NFSX_POSTOPATTR(v3) + NFSX_STATFS(v3));
|
|
if (v3)
|
|
nfsm_srvpostop_attr(getret, &at);
|
|
if (error)
|
|
return (0);
|
|
nfsm_build(sfp, struct nfs_statfs *, NFSX_STATFS(v3));
|
|
if (v3) {
|
|
tval = (u_quad_t)sf->f_blocks;
|
|
tval *= (u_quad_t)sf->f_bsize;
|
|
txdr_hyper(&tval, &sfp->sf_tbytes);
|
|
tval = (u_quad_t)sf->f_bfree;
|
|
tval *= (u_quad_t)sf->f_bsize;
|
|
txdr_hyper(&tval, &sfp->sf_fbytes);
|
|
tval = (u_quad_t)sf->f_bavail;
|
|
tval *= (u_quad_t)sf->f_bsize;
|
|
txdr_hyper(&tval, &sfp->sf_abytes);
|
|
sfp->sf_tfiles.nfsuquad[0] = 0;
|
|
sfp->sf_tfiles.nfsuquad[1] = txdr_unsigned(sf->f_files);
|
|
sfp->sf_ffiles.nfsuquad[0] = 0;
|
|
sfp->sf_ffiles.nfsuquad[1] = txdr_unsigned(sf->f_ffree);
|
|
sfp->sf_afiles.nfsuquad[0] = 0;
|
|
sfp->sf_afiles.nfsuquad[1] = txdr_unsigned(sf->f_ffree);
|
|
sfp->sf_invarsec = 0;
|
|
} else {
|
|
sfp->sf_tsize = txdr_unsigned(NFS_MAXDGRAMDATA);
|
|
sfp->sf_bsize = txdr_unsigned(sf->f_bsize);
|
|
sfp->sf_blocks = txdr_unsigned(sf->f_blocks);
|
|
sfp->sf_bfree = txdr_unsigned(sf->f_bfree);
|
|
sfp->sf_bavail = txdr_unsigned(sf->f_bavail);
|
|
}
|
|
nfsm_srvdone;
|
|
}
|
|
|
|
/*
|
|
* nfs fsinfo service
|
|
*/
|
|
int
|
|
nfsrv_fsinfo(nfsd, slp, procp, mrq)
|
|
struct nfsrv_descript *nfsd;
|
|
struct nfssvc_sock *slp;
|
|
struct proc *procp;
|
|
struct mbuf **mrq;
|
|
{
|
|
struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
|
|
struct mbuf *nam = nfsd->nd_nam;
|
|
caddr_t dpos = nfsd->nd_dpos;
|
|
struct ucred *cred = &nfsd->nd_cr;
|
|
register u_long *tl;
|
|
register struct nfsv3_fsinfo *sip;
|
|
register long t1;
|
|
caddr_t bpos;
|
|
int error = 0, rdonly, cache, getret = 1, pref;
|
|
char *cp2;
|
|
struct mbuf *mb, *mb2, *mreq;
|
|
struct vnode *vp;
|
|
struct vattr at;
|
|
nfsfh_t nfh;
|
|
fhandle_t *fhp;
|
|
u_quad_t frev;
|
|
|
|
#ifndef nolint
|
|
cache = 0;
|
|
#endif
|
|
fhp = &nfh.fh_generic;
|
|
nfsm_srvmtofh(fhp);
|
|
if (error = nfsrv_fhtovp(fhp, 1, &vp, cred, slp, nam,
|
|
&rdonly, (nfsd->nd_flag & ND_KERBAUTH))) {
|
|
nfsm_reply(NFSX_UNSIGNED);
|
|
nfsm_srvpostop_attr(getret, &at);
|
|
return (0);
|
|
}
|
|
getret = VOP_GETATTR(vp, &at, cred, procp);
|
|
nfsrv_vput(vp);
|
|
nfsm_reply(NFSX_V3POSTOPATTR + NFSX_V3FSINFO);
|
|
nfsm_srvpostop_attr(getret, &at);
|
|
nfsm_build(sip, struct nfsv3_fsinfo *, NFSX_V3FSINFO);
|
|
|
|
/*
|
|
* XXX
|
|
* There should be file system VFS OP(s) to get this information.
|
|
* For now, assume ufs.
|
|
*/
|
|
if (slp->ns_so->so_type == SOCK_DGRAM)
|
|
pref = NFS_MAXDGRAMDATA;
|
|
else
|
|
pref = NFS_MAXDATA;
|
|
sip->fs_rtmax = txdr_unsigned(NFS_MAXDATA);
|
|
sip->fs_rtpref = txdr_unsigned(pref);
|
|
sip->fs_rtmult = txdr_unsigned(NFS_FABLKSIZE);
|
|
sip->fs_wtmax = txdr_unsigned(NFS_MAXDATA);
|
|
sip->fs_wtpref = txdr_unsigned(pref);
|
|
sip->fs_wtmult = txdr_unsigned(NFS_FABLKSIZE);
|
|
sip->fs_dtpref = txdr_unsigned(pref);
|
|
sip->fs_maxfilesize.nfsuquad[0] = 0xffffffff;
|
|
sip->fs_maxfilesize.nfsuquad[1] = 0xffffffff;
|
|
sip->fs_timedelta.nfsv3_sec = 0;
|
|
sip->fs_timedelta.nfsv3_nsec = txdr_unsigned(1);
|
|
sip->fs_properties = txdr_unsigned(NFSV3FSINFO_LINK |
|
|
NFSV3FSINFO_SYMLINK | NFSV3FSINFO_HOMOGENEOUS |
|
|
NFSV3FSINFO_CANSETTIME);
|
|
nfsm_srvdone;
|
|
}
|
|
|
|
/*
|
|
* nfs pathconf service
|
|
*/
|
|
int
|
|
nfsrv_pathconf(nfsd, slp, procp, mrq)
|
|
struct nfsrv_descript *nfsd;
|
|
struct nfssvc_sock *slp;
|
|
struct proc *procp;
|
|
struct mbuf **mrq;
|
|
{
|
|
struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
|
|
struct mbuf *nam = nfsd->nd_nam;
|
|
caddr_t dpos = nfsd->nd_dpos;
|
|
struct ucred *cred = &nfsd->nd_cr;
|
|
register u_long *tl;
|
|
register struct nfsv3_pathconf *pc;
|
|
register long t1;
|
|
caddr_t bpos;
|
|
int error = 0, rdonly, cache, getret = 1, linkmax, namemax;
|
|
int chownres, notrunc;
|
|
char *cp2;
|
|
struct mbuf *mb, *mb2, *mreq;
|
|
struct vnode *vp;
|
|
struct vattr at;
|
|
nfsfh_t nfh;
|
|
fhandle_t *fhp;
|
|
u_quad_t frev;
|
|
|
|
#ifndef nolint
|
|
cache = 0;
|
|
#endif
|
|
fhp = &nfh.fh_generic;
|
|
nfsm_srvmtofh(fhp);
|
|
if (error = nfsrv_fhtovp(fhp, 1, &vp, cred, slp, nam,
|
|
&rdonly, (nfsd->nd_flag & ND_KERBAUTH))) {
|
|
nfsm_reply(NFSX_UNSIGNED);
|
|
nfsm_srvpostop_attr(getret, &at);
|
|
return (0);
|
|
}
|
|
error = VOP_PATHCONF(vp, _PC_LINK_MAX, &linkmax);
|
|
if (!error)
|
|
error = VOP_PATHCONF(vp, _PC_NAME_MAX, &namemax);
|
|
if (!error)
|
|
error = VOP_PATHCONF(vp, _PC_CHOWN_RESTRICTED, &chownres);
|
|
if (!error)
|
|
error = VOP_PATHCONF(vp, _PC_NO_TRUNC, ¬runc);
|
|
getret = VOP_GETATTR(vp, &at, cred, procp);
|
|
nfsrv_vput(vp);
|
|
nfsm_reply(NFSX_V3POSTOPATTR + NFSX_V3PATHCONF);
|
|
nfsm_srvpostop_attr(getret, &at);
|
|
if (error)
|
|
return (0);
|
|
nfsm_build(pc, struct nfsv3_pathconf *, NFSX_V3PATHCONF);
|
|
|
|
pc->pc_linkmax = txdr_unsigned(linkmax);
|
|
pc->pc_namemax = txdr_unsigned(namemax);
|
|
pc->pc_notrunc = txdr_unsigned(notrunc);
|
|
pc->pc_chownrestricted = txdr_unsigned(chownres);
|
|
|
|
/*
|
|
* These should probably be supported by VOP_PATHCONF(), but
|
|
* until msdosfs is exportable (why would you want to?), the
|
|
* Unix defaults should be ok.
|
|
*/
|
|
pc->pc_caseinsensitive = nfs_false;
|
|
pc->pc_casepreserving = nfs_true;
|
|
nfsm_srvdone;
|
|
}
|
|
|
|
/*
|
|
* Null operation, used by clients to ping server
|
|
*/
|
|
/* ARGSUSED */
|
|
int
|
|
nfsrv_null(nfsd, slp, procp, mrq)
|
|
struct nfsrv_descript *nfsd;
|
|
struct nfssvc_sock *slp;
|
|
struct proc *procp;
|
|
struct mbuf **mrq;
|
|
{
|
|
struct mbuf *mrep = nfsd->nd_mrep;
|
|
caddr_t bpos;
|
|
int error = NFSERR_RETVOID, cache;
|
|
struct mbuf *mb, *mreq;
|
|
u_quad_t frev;
|
|
|
|
#ifndef nolint
|
|
cache = 0;
|
|
#endif
|
|
nfsm_reply(0);
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* No operation, used for obsolete procedures
|
|
*/
|
|
/* ARGSUSED */
|
|
int
|
|
nfsrv_noop(nfsd, slp, procp, mrq)
|
|
struct nfsrv_descript *nfsd;
|
|
struct nfssvc_sock *slp;
|
|
struct proc *procp;
|
|
struct mbuf **mrq;
|
|
{
|
|
struct mbuf *mrep = nfsd->nd_mrep;
|
|
caddr_t bpos;
|
|
int error, cache;
|
|
struct mbuf *mb, *mreq;
|
|
u_quad_t frev;
|
|
|
|
#ifndef nolint
|
|
cache = 0;
|
|
#endif
|
|
if (nfsd->nd_repstat)
|
|
error = nfsd->nd_repstat;
|
|
else
|
|
error = EPROCUNAVAIL;
|
|
nfsm_reply(0);
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Perform access checking for vnodes obtained from file handles that would
|
|
* refer to files already opened by a Unix client. You cannot just use
|
|
* vn_writechk() and VOP_ACCESS() for two reasons.
|
|
* 1 - You must check for exported rdonly as well as MNT_RDONLY for the write case
|
|
* 2 - The owner is to be given access irrespective of mode bits so that
|
|
* processes that chmod after opening a file don't break. I don't like
|
|
* this because it opens a security hole, but since the nfs server opens
|
|
* a security hole the size of a barn door anyhow, what the heck.
|
|
*/
|
|
static int
|
|
nfsrv_access(vp, flags, cred, rdonly, p)
|
|
register struct vnode *vp;
|
|
int flags;
|
|
register struct ucred *cred;
|
|
int rdonly;
|
|
struct proc *p;
|
|
{
|
|
struct vattr vattr;
|
|
int error;
|
|
if (flags & VWRITE) {
|
|
/* Just vn_writechk() changed to check rdonly */
|
|
/*
|
|
* Disallow write attempts on read-only file systems;
|
|
* unless the file is a socket or a block or character
|
|
* device resident on the file system.
|
|
*/
|
|
if (rdonly || (vp->v_mount->mnt_flag & MNT_RDONLY)) {
|
|
switch (vp->v_type) {
|
|
case VREG: case VDIR: case VLNK:
|
|
return (EROFS);
|
|
}
|
|
}
|
|
/*
|
|
* If there's shared text associated with
|
|
* the inode, we can't allow writing.
|
|
*/
|
|
if (vp->v_flag & VTEXT)
|
|
return (ETXTBSY);
|
|
}
|
|
if (error = VOP_GETATTR(vp, &vattr, cred, p))
|
|
return (error);
|
|
if ((error = VOP_ACCESS(vp, flags, cred, p)) &&
|
|
cred->cr_uid != vattr.va_uid)
|
|
return (error);
|
|
return (0);
|
|
}
|
|
#endif /* NFS_NOSERVER */
|
|
|