4178db1cdc
When coding the pNFS server, I added several vn_start_write() calls done while the vnode was locked, not realizing I had introduced LORs and possible deadlock when an exported file system on the MDS is suspended. This patch fixes this by removing the added vn_start_write() calls and modifying the code so that the extant vn_start_write() call before the NFS RPC/operation is done when needed by the pNFS server. Flags are changed so that LayoutCommit and LayoutReturn now get a vn_start_write() done for them. When the pNFS server is enabled, the code now also changes the flags for Getattr, so that the vn_start_write() is done for Getattr, since it may need to do a vn_set_extattr(). The nfs_writerpc flag array was made global to the NFS server and renamed nfsrv_writerpc, which is consistent naming for globals in the NFS server. Thanks go to kib@ for reporting that doing vn_start_write() while the vnode is locked results in a LOR. This patch only affects the behaviour of the pNFS server.
5795 lines
154 KiB
C
5795 lines
154 KiB
C
/*-
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* SPDX-License-Identifier: BSD-3-Clause
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*
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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. 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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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/capsicum.h>
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#include <sys/extattr.h>
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/*
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* Functions that perform the vfs operations required by the routines in
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* nfsd_serv.c. It is hoped that this change will make the server more
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* portable.
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*/
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#include <fs/nfs/nfsport.h>
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#include <sys/hash.h>
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#include <sys/sysctl.h>
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#include <nlm/nlm_prot.h>
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#include <nlm/nlm.h>
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FEATURE(nfsd, "NFSv4 server");
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extern u_int32_t newnfs_true, newnfs_false, newnfs_xdrneg1;
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extern int nfsrv_useacl;
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extern int newnfs_numnfsd;
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extern struct mount nfsv4root_mnt;
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extern struct nfsrv_stablefirst nfsrv_stablefirst;
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extern void (*nfsd_call_servertimer)(void);
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extern SVCPOOL *nfsrvd_pool;
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extern struct nfsv4lock nfsd_suspend_lock;
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extern struct nfsclienthashhead *nfsclienthash;
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extern struct nfslockhashhead *nfslockhash;
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extern struct nfssessionhash *nfssessionhash;
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extern int nfsrv_sessionhashsize;
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extern struct nfsstatsv1 nfsstatsv1;
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extern struct nfslayouthash *nfslayouthash;
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extern int nfsrv_layouthashsize;
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extern struct mtx nfsrv_dslock_mtx;
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extern int nfs_pnfsiothreads;
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extern struct nfsdontlisthead nfsrv_dontlisthead;
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extern volatile int nfsrv_dontlistlen;
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extern volatile int nfsrv_devidcnt;
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extern int nfsrv_maxpnfsmirror;
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struct vfsoptlist nfsv4root_opt, nfsv4root_newopt;
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NFSDLOCKMUTEX;
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NFSSTATESPINLOCK;
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struct nfsrchash_bucket nfsrchash_table[NFSRVCACHE_HASHSIZE];
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struct nfsrchash_bucket nfsrcahash_table[NFSRVCACHE_HASHSIZE];
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struct mtx nfsrc_udpmtx;
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struct mtx nfs_v4root_mutex;
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struct mtx nfsrv_dontlistlock_mtx;
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struct mtx nfsrv_recalllock_mtx;
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struct nfsrvfh nfs_rootfh, nfs_pubfh;
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int nfs_pubfhset = 0, nfs_rootfhset = 0;
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struct proc *nfsd_master_proc = NULL;
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int nfsd_debuglevel = 0;
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static pid_t nfsd_master_pid = (pid_t)-1;
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static char nfsd_master_comm[MAXCOMLEN + 1];
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static struct timeval nfsd_master_start;
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static uint32_t nfsv4_sysid = 0;
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static fhandle_t zerofh;
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static int nfssvc_srvcall(struct thread *, struct nfssvc_args *,
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struct ucred *);
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int nfsrv_enable_crossmntpt = 1;
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static int nfs_commit_blks;
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static int nfs_commit_miss;
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extern int nfsrv_issuedelegs;
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extern int nfsrv_dolocallocks;
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extern int nfsd_enable_stringtouid;
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extern struct nfsdevicehead nfsrv_devidhead;
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static void nfsrv_pnfscreate(struct vnode *, struct vattr *, struct ucred *,
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NFSPROC_T *);
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static void nfsrv_pnfsremovesetup(struct vnode *, NFSPROC_T *, struct vnode **,
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int *, char *, fhandle_t *);
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static void nfsrv_pnfsremove(struct vnode **, int, char *, fhandle_t *,
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NFSPROC_T *);
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static int nfsrv_proxyds(struct nfsrv_descript *, struct vnode *, off_t, int,
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struct ucred *, struct thread *, int, struct mbuf **, char *,
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struct mbuf **, struct nfsvattr *, struct acl *);
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static int nfsrv_setextattr(struct vnode *, struct nfsvattr *, NFSPROC_T *);
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static int nfsrv_readdsrpc(fhandle_t *, off_t, int, struct ucred *,
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NFSPROC_T *, struct nfsmount *, struct mbuf **, struct mbuf **);
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static int nfsrv_writedsrpc(fhandle_t *, off_t, int, struct ucred *,
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NFSPROC_T *, struct vnode *, struct nfsmount **, int, struct mbuf **,
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char *, int *);
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static int nfsrv_setacldsrpc(fhandle_t *, struct ucred *, NFSPROC_T *,
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struct vnode *, struct nfsmount **, int, struct acl *, int *);
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static int nfsrv_setattrdsrpc(fhandle_t *, struct ucred *, NFSPROC_T *,
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struct vnode *, struct nfsmount **, int, struct nfsvattr *, int *);
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static int nfsrv_getattrdsrpc(fhandle_t *, struct ucred *, NFSPROC_T *,
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struct vnode *, struct nfsmount *, struct nfsvattr *);
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static int nfsrv_putfhname(fhandle_t *, char *);
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static int nfsrv_pnfslookupds(struct vnode *, struct vnode *,
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struct pnfsdsfile *, struct vnode **, NFSPROC_T *);
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static void nfsrv_pnfssetfh(struct vnode *, struct pnfsdsfile *, char *, char *,
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struct vnode *, NFSPROC_T *);
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static int nfsrv_dsremove(struct vnode *, char *, struct ucred *, NFSPROC_T *);
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static int nfsrv_dssetacl(struct vnode *, struct acl *, struct ucred *,
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NFSPROC_T *);
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static int nfsrv_pnfsstatfs(struct statfs *);
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int nfs_pnfsio(task_fn_t *, void *);
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SYSCTL_NODE(_vfs, OID_AUTO, nfsd, CTLFLAG_RW, 0, "NFS server");
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SYSCTL_INT(_vfs_nfsd, OID_AUTO, mirrormnt, CTLFLAG_RW,
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&nfsrv_enable_crossmntpt, 0, "Enable nfsd to cross mount points");
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SYSCTL_INT(_vfs_nfsd, OID_AUTO, commit_blks, CTLFLAG_RW, &nfs_commit_blks,
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0, "");
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SYSCTL_INT(_vfs_nfsd, OID_AUTO, commit_miss, CTLFLAG_RW, &nfs_commit_miss,
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0, "");
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SYSCTL_INT(_vfs_nfsd, OID_AUTO, issue_delegations, CTLFLAG_RW,
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&nfsrv_issuedelegs, 0, "Enable nfsd to issue delegations");
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SYSCTL_INT(_vfs_nfsd, OID_AUTO, enable_locallocks, CTLFLAG_RW,
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&nfsrv_dolocallocks, 0, "Enable nfsd to acquire local locks on files");
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SYSCTL_INT(_vfs_nfsd, OID_AUTO, debuglevel, CTLFLAG_RW, &nfsd_debuglevel,
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0, "Debug level for NFS server");
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SYSCTL_INT(_vfs_nfsd, OID_AUTO, enable_stringtouid, CTLFLAG_RW,
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&nfsd_enable_stringtouid, 0, "Enable nfsd to accept numeric owner_names");
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static int nfsrv_pnfsgetdsattr = 1;
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SYSCTL_INT(_vfs_nfsd, OID_AUTO, pnfsgetdsattr, CTLFLAG_RW,
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&nfsrv_pnfsgetdsattr, 0, "When set getattr gets DS attributes via RPC");
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/*
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* nfsrv_dsdirsize can only be increased and only when the nfsd threads are
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* not running.
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* The dsN subdirectories for the increased values must have been created
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* on all DS servers before this increase is done.
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*/
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u_int nfsrv_dsdirsize = 20;
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static int
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sysctl_dsdirsize(SYSCTL_HANDLER_ARGS)
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{
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int error, newdsdirsize;
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newdsdirsize = nfsrv_dsdirsize;
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error = sysctl_handle_int(oidp, &newdsdirsize, 0, req);
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if (error != 0 || req->newptr == NULL)
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return (error);
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if (newdsdirsize <= nfsrv_dsdirsize || newdsdirsize > 10000 ||
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newnfs_numnfsd != 0)
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return (EINVAL);
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nfsrv_dsdirsize = newdsdirsize;
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return (0);
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}
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SYSCTL_PROC(_vfs_nfsd, OID_AUTO, dsdirsize, CTLTYPE_UINT | CTLFLAG_RW, 0,
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sizeof(nfsrv_dsdirsize), sysctl_dsdirsize, "IU",
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"Number of dsN subdirs on the DS servers");
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#define MAX_REORDERED_RPC 16
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#define NUM_HEURISTIC 1031
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#define NHUSE_INIT 64
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#define NHUSE_INC 16
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#define NHUSE_MAX 2048
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static struct nfsheur {
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struct vnode *nh_vp; /* vp to match (unreferenced pointer) */
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off_t nh_nextoff; /* next offset for sequential detection */
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int nh_use; /* use count for selection */
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int nh_seqcount; /* heuristic */
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} nfsheur[NUM_HEURISTIC];
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/*
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* Heuristic to detect sequential operation.
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*/
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static struct nfsheur *
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nfsrv_sequential_heuristic(struct uio *uio, struct vnode *vp)
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{
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struct nfsheur *nh;
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int hi, try;
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/* Locate best candidate. */
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try = 32;
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hi = ((int)(vm_offset_t)vp / sizeof(struct vnode)) % NUM_HEURISTIC;
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nh = &nfsheur[hi];
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while (try--) {
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if (nfsheur[hi].nh_vp == vp) {
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nh = &nfsheur[hi];
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break;
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}
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if (nfsheur[hi].nh_use > 0)
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--nfsheur[hi].nh_use;
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hi = (hi + 1) % NUM_HEURISTIC;
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if (nfsheur[hi].nh_use < nh->nh_use)
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nh = &nfsheur[hi];
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}
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/* Initialize hint if this is a new file. */
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if (nh->nh_vp != vp) {
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nh->nh_vp = vp;
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nh->nh_nextoff = uio->uio_offset;
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nh->nh_use = NHUSE_INIT;
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if (uio->uio_offset == 0)
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nh->nh_seqcount = 4;
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else
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nh->nh_seqcount = 1;
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}
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|
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/* Calculate heuristic. */
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if ((uio->uio_offset == 0 && nh->nh_seqcount > 0) ||
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uio->uio_offset == nh->nh_nextoff) {
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/* See comments in vfs_vnops.c:sequential_heuristic(). */
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nh->nh_seqcount += howmany(uio->uio_resid, 16384);
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if (nh->nh_seqcount > IO_SEQMAX)
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nh->nh_seqcount = IO_SEQMAX;
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} else if (qabs(uio->uio_offset - nh->nh_nextoff) <= MAX_REORDERED_RPC *
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imax(vp->v_mount->mnt_stat.f_iosize, uio->uio_resid)) {
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/* Probably a reordered RPC, leave seqcount alone. */
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} else if (nh->nh_seqcount > 1) {
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nh->nh_seqcount /= 2;
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} else {
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nh->nh_seqcount = 0;
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}
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nh->nh_use += NHUSE_INC;
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if (nh->nh_use > NHUSE_MAX)
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nh->nh_use = NHUSE_MAX;
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return (nh);
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}
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|
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/*
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* Get attributes into nfsvattr structure.
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*/
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int
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nfsvno_getattr(struct vnode *vp, struct nfsvattr *nvap,
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struct nfsrv_descript *nd, struct thread *p, int vpislocked,
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nfsattrbit_t *attrbitp)
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{
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int error, gotattr, lockedit = 0;
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struct nfsvattr na;
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|
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if (vpislocked == 0) {
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/*
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* When vpislocked == 0, the vnode is either exclusively
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* locked by this thread or not locked by this thread.
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* As such, shared lock it, if not exclusively locked.
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*/
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if (NFSVOPISLOCKED(vp) != LK_EXCLUSIVE) {
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lockedit = 1;
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NFSVOPLOCK(vp, LK_SHARED | LK_RETRY);
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}
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}
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|
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/*
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* Acquire the Change, Size and TimeModify attributes, as required.
|
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* This needs to be done for regular files if:
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* - non-NFSv4 RPCs or
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* - when attrbitp == NULL or
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* - an NFSv4 RPC with any of the above attributes in attrbitp.
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* A return of 0 for nfsrv_proxyds() indicates that it has acquired
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* these attributes. nfsrv_proxyds() will return an error if the
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* server is not a pNFS one.
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*/
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gotattr = 0;
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if (vp->v_type == VREG && nfsrv_devidcnt > 0 && (attrbitp == NULL ||
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(nd->nd_flag & ND_NFSV4) == 0 ||
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NFSISSET_ATTRBIT(attrbitp, NFSATTRBIT_CHANGE) ||
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NFSISSET_ATTRBIT(attrbitp, NFSATTRBIT_SIZE) ||
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NFSISSET_ATTRBIT(attrbitp, NFSATTRBIT_TIMEACCESS) ||
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NFSISSET_ATTRBIT(attrbitp, NFSATTRBIT_TIMEMODIFY))) {
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error = nfsrv_proxyds(nd, vp, 0, 0, nd->nd_cred, p,
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NFSPROC_GETATTR, NULL, NULL, NULL, &na, NULL);
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if (error == 0)
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gotattr = 1;
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}
|
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error = VOP_GETATTR(vp, &nvap->na_vattr, nd->nd_cred);
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if (lockedit != 0)
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NFSVOPUNLOCK(vp, 0);
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|
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/*
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* If we got the Change, Size and Modify Time from the DS,
|
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* replace them.
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*/
|
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if (gotattr != 0) {
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nvap->na_atime = na.na_atime;
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nvap->na_mtime = na.na_mtime;
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nvap->na_filerev = na.na_filerev;
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nvap->na_size = na.na_size;
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}
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NFSD_DEBUG(4, "nfsvno_getattr: gotattr=%d err=%d chg=%ju\n", gotattr,
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error, (uintmax_t)na.na_filerev);
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|
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NFSEXITCODE(error);
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return (error);
|
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}
|
|
|
|
/*
|
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* Get a file handle for a vnode.
|
|
*/
|
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int
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nfsvno_getfh(struct vnode *vp, fhandle_t *fhp, struct thread *p)
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{
|
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int error;
|
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|
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NFSBZERO((caddr_t)fhp, sizeof(fhandle_t));
|
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fhp->fh_fsid = vp->v_mount->mnt_stat.f_fsid;
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error = VOP_VPTOFH(vp, &fhp->fh_fid);
|
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|
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NFSEXITCODE(error);
|
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return (error);
|
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}
|
|
|
|
/*
|
|
* 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_ACCESSX() 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 for some
|
|
* operations, so that processes that chmod after opening a file don't
|
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* break.
|
|
*/
|
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int
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nfsvno_accchk(struct vnode *vp, accmode_t accmode, struct ucred *cred,
|
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struct nfsexstuff *exp, struct thread *p, int override, int vpislocked,
|
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u_int32_t *supportedtypep)
|
|
{
|
|
struct vattr vattr;
|
|
int error = 0, getret = 0;
|
|
|
|
if (vpislocked == 0) {
|
|
if (NFSVOPLOCK(vp, LK_SHARED) != 0) {
|
|
error = EPERM;
|
|
goto out;
|
|
}
|
|
}
|
|
if (accmode & 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 (NFSVNO_EXRDONLY(exp) ||
|
|
(vp->v_mount->mnt_flag & MNT_RDONLY)) {
|
|
switch (vp->v_type) {
|
|
case VREG:
|
|
case VDIR:
|
|
case VLNK:
|
|
error = EROFS;
|
|
default:
|
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break;
|
|
}
|
|
}
|
|
/*
|
|
* If there's shared text associated with
|
|
* the inode, try to free it up once. If
|
|
* we fail, we can't allow writing.
|
|
*/
|
|
if (VOP_IS_TEXT(vp) && error == 0)
|
|
error = ETXTBSY;
|
|
}
|
|
if (error != 0) {
|
|
if (vpislocked == 0)
|
|
NFSVOPUNLOCK(vp, 0);
|
|
goto out;
|
|
}
|
|
|
|
/*
|
|
* Should the override still be applied when ACLs are enabled?
|
|
*/
|
|
error = VOP_ACCESSX(vp, accmode, cred, p);
|
|
if (error != 0 && (accmode & (VDELETE | VDELETE_CHILD))) {
|
|
/*
|
|
* Try again with VEXPLICIT_DENY, to see if the test for
|
|
* deletion is supported.
|
|
*/
|
|
error = VOP_ACCESSX(vp, accmode | VEXPLICIT_DENY, cred, p);
|
|
if (error == 0) {
|
|
if (vp->v_type == VDIR) {
|
|
accmode &= ~(VDELETE | VDELETE_CHILD);
|
|
accmode |= VWRITE;
|
|
error = VOP_ACCESSX(vp, accmode, cred, p);
|
|
} else if (supportedtypep != NULL) {
|
|
*supportedtypep &= ~NFSACCESS_DELETE;
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Allow certain operations for the owner (reads and writes
|
|
* on files that are already open).
|
|
*/
|
|
if (override != NFSACCCHK_NOOVERRIDE &&
|
|
(error == EPERM || error == EACCES)) {
|
|
if (cred->cr_uid == 0 && (override & NFSACCCHK_ALLOWROOT))
|
|
error = 0;
|
|
else if (override & NFSACCCHK_ALLOWOWNER) {
|
|
getret = VOP_GETATTR(vp, &vattr, cred);
|
|
if (getret == 0 && cred->cr_uid == vattr.va_uid)
|
|
error = 0;
|
|
}
|
|
}
|
|
if (vpislocked == 0)
|
|
NFSVOPUNLOCK(vp, 0);
|
|
|
|
out:
|
|
NFSEXITCODE(error);
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* Set attribute(s) vnop.
|
|
*/
|
|
int
|
|
nfsvno_setattr(struct vnode *vp, struct nfsvattr *nvap, struct ucred *cred,
|
|
struct thread *p, struct nfsexstuff *exp)
|
|
{
|
|
u_quad_t savsize = 0;
|
|
int error, savedit;
|
|
|
|
/*
|
|
* If this is an exported file system and a pNFS service is running,
|
|
* don't VOP_SETATTR() of size for the MDS file system.
|
|
*/
|
|
savedit = 0;
|
|
error = 0;
|
|
if (vp->v_type == VREG && (vp->v_mount->mnt_flag & MNT_EXPORTED) != 0 &&
|
|
nfsrv_devidcnt != 0 && nvap->na_vattr.va_size != VNOVAL &&
|
|
nvap->na_vattr.va_size > 0) {
|
|
savsize = nvap->na_vattr.va_size;
|
|
nvap->na_vattr.va_size = VNOVAL;
|
|
if (nvap->na_vattr.va_uid != (uid_t)VNOVAL ||
|
|
nvap->na_vattr.va_gid != (gid_t)VNOVAL ||
|
|
nvap->na_vattr.va_mode != (mode_t)VNOVAL ||
|
|
nvap->na_vattr.va_atime.tv_sec != VNOVAL ||
|
|
nvap->na_vattr.va_mtime.tv_sec != VNOVAL)
|
|
savedit = 1;
|
|
else
|
|
savedit = 2;
|
|
}
|
|
if (savedit != 2)
|
|
error = VOP_SETATTR(vp, &nvap->na_vattr, cred);
|
|
if (savedit != 0)
|
|
nvap->na_vattr.va_size = savsize;
|
|
if (error == 0 && (nvap->na_vattr.va_uid != (uid_t)VNOVAL ||
|
|
nvap->na_vattr.va_gid != (gid_t)VNOVAL ||
|
|
nvap->na_vattr.va_size != VNOVAL ||
|
|
nvap->na_vattr.va_mode != (mode_t)VNOVAL ||
|
|
nvap->na_vattr.va_atime.tv_sec != VNOVAL ||
|
|
nvap->na_vattr.va_mtime.tv_sec != VNOVAL)) {
|
|
/* For a pNFS server, set the attributes on the DS file. */
|
|
error = nfsrv_proxyds(NULL, vp, 0, 0, cred, p, NFSPROC_SETATTR,
|
|
NULL, NULL, NULL, nvap, NULL);
|
|
if (error == ENOENT)
|
|
error = 0;
|
|
}
|
|
NFSEXITCODE(error);
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* Set up nameidata for a lookup() call and do it.
|
|
*/
|
|
int
|
|
nfsvno_namei(struct nfsrv_descript *nd, struct nameidata *ndp,
|
|
struct vnode *dp, int islocked, struct nfsexstuff *exp, struct thread *p,
|
|
struct vnode **retdirp)
|
|
{
|
|
struct componentname *cnp = &ndp->ni_cnd;
|
|
int i;
|
|
struct iovec aiov;
|
|
struct uio auio;
|
|
int lockleaf = (cnp->cn_flags & LOCKLEAF) != 0, linklen;
|
|
int error = 0;
|
|
char *cp;
|
|
|
|
*retdirp = NULL;
|
|
cnp->cn_nameptr = cnp->cn_pnbuf;
|
|
ndp->ni_lcf = 0;
|
|
/*
|
|
* Extract and set starting directory.
|
|
*/
|
|
if (dp->v_type != VDIR) {
|
|
if (islocked)
|
|
vput(dp);
|
|
else
|
|
vrele(dp);
|
|
nfsvno_relpathbuf(ndp);
|
|
error = ENOTDIR;
|
|
goto out1;
|
|
}
|
|
if (islocked)
|
|
NFSVOPUNLOCK(dp, 0);
|
|
VREF(dp);
|
|
*retdirp = dp;
|
|
if (NFSVNO_EXRDONLY(exp))
|
|
cnp->cn_flags |= RDONLY;
|
|
ndp->ni_segflg = UIO_SYSSPACE;
|
|
|
|
if (nd->nd_flag & ND_PUBLOOKUP) {
|
|
ndp->ni_loopcnt = 0;
|
|
if (cnp->cn_pnbuf[0] == '/') {
|
|
vrele(dp);
|
|
/*
|
|
* Check for degenerate pathnames here, since lookup()
|
|
* panics on them.
|
|
*/
|
|
for (i = 1; i < ndp->ni_pathlen; i++)
|
|
if (cnp->cn_pnbuf[i] != '/')
|
|
break;
|
|
if (i == ndp->ni_pathlen) {
|
|
error = NFSERR_ACCES;
|
|
goto out;
|
|
}
|
|
dp = rootvnode;
|
|
VREF(dp);
|
|
}
|
|
} else if ((nfsrv_enable_crossmntpt == 0 && NFSVNO_EXPORTED(exp)) ||
|
|
(nd->nd_flag & ND_NFSV4) == 0) {
|
|
/*
|
|
* Only cross mount points for NFSv4 when doing a
|
|
* mount while traversing the file system above
|
|
* the mount point, unless nfsrv_enable_crossmntpt is set.
|
|
*/
|
|
cnp->cn_flags |= NOCROSSMOUNT;
|
|
}
|
|
|
|
/*
|
|
* Initialize for scan, set ni_startdir and bump ref on dp again
|
|
* because lookup() will dereference ni_startdir.
|
|
*/
|
|
|
|
cnp->cn_thread = p;
|
|
ndp->ni_startdir = dp;
|
|
ndp->ni_rootdir = rootvnode;
|
|
ndp->ni_topdir = NULL;
|
|
|
|
if (!lockleaf)
|
|
cnp->cn_flags |= LOCKLEAF;
|
|
for (;;) {
|
|
cnp->cn_nameptr = cnp->cn_pnbuf;
|
|
/*
|
|
* Call lookup() to do the real work. If an error occurs,
|
|
* ndp->ni_vp and ni_dvp are left uninitialized or NULL and
|
|
* we do not have to dereference anything before returning.
|
|
* In either case ni_startdir will be dereferenced and NULLed
|
|
* out.
|
|
*/
|
|
error = lookup(ndp);
|
|
if (error)
|
|
break;
|
|
|
|
/*
|
|
* Check for encountering a symbolic link. Trivial
|
|
* termination occurs if no symlink encountered.
|
|
*/
|
|
if ((cnp->cn_flags & ISSYMLINK) == 0) {
|
|
if ((cnp->cn_flags & (SAVENAME | SAVESTART)) == 0)
|
|
nfsvno_relpathbuf(ndp);
|
|
if (ndp->ni_vp && !lockleaf)
|
|
NFSVOPUNLOCK(ndp->ni_vp, 0);
|
|
break;
|
|
}
|
|
|
|
/*
|
|
* Validate symlink
|
|
*/
|
|
if ((cnp->cn_flags & LOCKPARENT) && ndp->ni_pathlen == 1)
|
|
NFSVOPUNLOCK(ndp->ni_dvp, 0);
|
|
if (!(nd->nd_flag & ND_PUBLOOKUP)) {
|
|
error = EINVAL;
|
|
goto badlink2;
|
|
}
|
|
|
|
if (ndp->ni_loopcnt++ >= MAXSYMLINKS) {
|
|
error = ELOOP;
|
|
goto badlink2;
|
|
}
|
|
if (ndp->ni_pathlen > 1)
|
|
cp = uma_zalloc(namei_zone, M_WAITOK);
|
|
else
|
|
cp = cnp->cn_pnbuf;
|
|
aiov.iov_base = cp;
|
|
aiov.iov_len = MAXPATHLEN;
|
|
auio.uio_iov = &aiov;
|
|
auio.uio_iovcnt = 1;
|
|
auio.uio_offset = 0;
|
|
auio.uio_rw = UIO_READ;
|
|
auio.uio_segflg = UIO_SYSSPACE;
|
|
auio.uio_td = NULL;
|
|
auio.uio_resid = MAXPATHLEN;
|
|
error = VOP_READLINK(ndp->ni_vp, &auio, cnp->cn_cred);
|
|
if (error) {
|
|
badlink1:
|
|
if (ndp->ni_pathlen > 1)
|
|
uma_zfree(namei_zone, cp);
|
|
badlink2:
|
|
vrele(ndp->ni_dvp);
|
|
vput(ndp->ni_vp);
|
|
break;
|
|
}
|
|
linklen = MAXPATHLEN - auio.uio_resid;
|
|
if (linklen == 0) {
|
|
error = ENOENT;
|
|
goto badlink1;
|
|
}
|
|
if (linklen + ndp->ni_pathlen >= MAXPATHLEN) {
|
|
error = ENAMETOOLONG;
|
|
goto badlink1;
|
|
}
|
|
|
|
/*
|
|
* Adjust or replace path
|
|
*/
|
|
if (ndp->ni_pathlen > 1) {
|
|
NFSBCOPY(ndp->ni_next, cp + linklen, ndp->ni_pathlen);
|
|
uma_zfree(namei_zone, cnp->cn_pnbuf);
|
|
cnp->cn_pnbuf = cp;
|
|
} else
|
|
cnp->cn_pnbuf[linklen] = '\0';
|
|
ndp->ni_pathlen += linklen;
|
|
|
|
/*
|
|
* Cleanup refs for next loop and check if root directory
|
|
* should replace current directory. Normally ni_dvp
|
|
* becomes the new base directory and is cleaned up when
|
|
* we loop. Explicitly null pointers after invalidation
|
|
* to clarify operation.
|
|
*/
|
|
vput(ndp->ni_vp);
|
|
ndp->ni_vp = NULL;
|
|
|
|
if (cnp->cn_pnbuf[0] == '/') {
|
|
vrele(ndp->ni_dvp);
|
|
ndp->ni_dvp = ndp->ni_rootdir;
|
|
VREF(ndp->ni_dvp);
|
|
}
|
|
ndp->ni_startdir = ndp->ni_dvp;
|
|
ndp->ni_dvp = NULL;
|
|
}
|
|
if (!lockleaf)
|
|
cnp->cn_flags &= ~LOCKLEAF;
|
|
|
|
out:
|
|
if (error) {
|
|
nfsvno_relpathbuf(ndp);
|
|
ndp->ni_vp = NULL;
|
|
ndp->ni_dvp = NULL;
|
|
ndp->ni_startdir = NULL;
|
|
} else if ((ndp->ni_cnd.cn_flags & (WANTPARENT|LOCKPARENT)) == 0) {
|
|
ndp->ni_dvp = NULL;
|
|
}
|
|
|
|
out1:
|
|
NFSEXITCODE2(error, nd);
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* Set up a pathname buffer and return a pointer to it and, optionally
|
|
* set a hash pointer.
|
|
*/
|
|
void
|
|
nfsvno_setpathbuf(struct nameidata *ndp, char **bufpp, u_long **hashpp)
|
|
{
|
|
struct componentname *cnp = &ndp->ni_cnd;
|
|
|
|
cnp->cn_flags |= (NOMACCHECK | HASBUF);
|
|
cnp->cn_pnbuf = uma_zalloc(namei_zone, M_WAITOK);
|
|
if (hashpp != NULL)
|
|
*hashpp = NULL;
|
|
*bufpp = cnp->cn_pnbuf;
|
|
}
|
|
|
|
/*
|
|
* Release the above path buffer, if not released by nfsvno_namei().
|
|
*/
|
|
void
|
|
nfsvno_relpathbuf(struct nameidata *ndp)
|
|
{
|
|
|
|
if ((ndp->ni_cnd.cn_flags & HASBUF) == 0)
|
|
panic("nfsrelpath");
|
|
uma_zfree(namei_zone, ndp->ni_cnd.cn_pnbuf);
|
|
ndp->ni_cnd.cn_flags &= ~HASBUF;
|
|
}
|
|
|
|
/*
|
|
* Readlink vnode op into an mbuf list.
|
|
*/
|
|
int
|
|
nfsvno_readlink(struct vnode *vp, struct ucred *cred, struct thread *p,
|
|
struct mbuf **mpp, struct mbuf **mpendp, int *lenp)
|
|
{
|
|
struct iovec iv[(NFS_MAXPATHLEN+MLEN-1)/MLEN];
|
|
struct iovec *ivp = iv;
|
|
struct uio io, *uiop = &io;
|
|
struct mbuf *mp, *mp2 = NULL, *mp3 = NULL;
|
|
int i, len, tlen, error = 0;
|
|
|
|
len = 0;
|
|
i = 0;
|
|
while (len < NFS_MAXPATHLEN) {
|
|
NFSMGET(mp);
|
|
MCLGET(mp, M_WAITOK);
|
|
mp->m_len = M_SIZE(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_td = NULL;
|
|
error = VOP_READLINK(vp, uiop, cred);
|
|
if (error) {
|
|
m_freem(mp3);
|
|
*lenp = 0;
|
|
goto out;
|
|
}
|
|
if (uiop->uio_resid > 0) {
|
|
len -= uiop->uio_resid;
|
|
tlen = NFSM_RNDUP(len);
|
|
nfsrv_adj(mp3, NFS_MAXPATHLEN - tlen, tlen - len);
|
|
}
|
|
*lenp = len;
|
|
*mpp = mp3;
|
|
*mpendp = mp;
|
|
|
|
out:
|
|
NFSEXITCODE(error);
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* Read vnode op call into mbuf list.
|
|
*/
|
|
int
|
|
nfsvno_read(struct vnode *vp, off_t off, int cnt, struct ucred *cred,
|
|
struct thread *p, struct mbuf **mpp, struct mbuf **mpendp)
|
|
{
|
|
struct mbuf *m;
|
|
int i;
|
|
struct iovec *iv;
|
|
struct iovec *iv2;
|
|
int error = 0, len, left, siz, tlen, ioflag = 0;
|
|
struct mbuf *m2 = NULL, *m3;
|
|
struct uio io, *uiop = &io;
|
|
struct nfsheur *nh;
|
|
|
|
/*
|
|
* Attempt to read from a DS file. A return of ENOENT implies
|
|
* there is no DS file to read.
|
|
*/
|
|
error = nfsrv_proxyds(NULL, vp, off, cnt, cred, p, NFSPROC_READDS, mpp,
|
|
NULL, mpendp, NULL, NULL);
|
|
if (error != ENOENT)
|
|
return (error);
|
|
|
|
len = left = NFSM_RNDUP(cnt);
|
|
m3 = NULL;
|
|
/*
|
|
* Generate the mbuf list with the uio_iov ref. to it.
|
|
*/
|
|
i = 0;
|
|
while (left > 0) {
|
|
NFSMGET(m);
|
|
MCLGET(m, M_WAITOK);
|
|
m->m_len = 0;
|
|
siz = min(M_TRAILINGSPACE(m), left);
|
|
left -= siz;
|
|
i++;
|
|
if (m3)
|
|
m2->m_next = m;
|
|
else
|
|
m3 = m;
|
|
m2 = m;
|
|
}
|
|
iv = malloc(i * sizeof (struct iovec),
|
|
M_TEMP, M_WAITOK);
|
|
uiop->uio_iov = iv2 = iv;
|
|
m = m3;
|
|
left = len;
|
|
i = 0;
|
|
while (left > 0) {
|
|
if (m == NULL)
|
|
panic("nfsvno_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 = len;
|
|
uiop->uio_rw = UIO_READ;
|
|
uiop->uio_segflg = UIO_SYSSPACE;
|
|
uiop->uio_td = NULL;
|
|
nh = nfsrv_sequential_heuristic(uiop, vp);
|
|
ioflag |= nh->nh_seqcount << IO_SEQSHIFT;
|
|
/* XXX KDM make this more systematic? */
|
|
nfsstatsv1.srvbytes[NFSV4OP_READ] += uiop->uio_resid;
|
|
error = VOP_READ(vp, uiop, IO_NODELOCKED | ioflag, cred);
|
|
free(iv2, M_TEMP);
|
|
if (error) {
|
|
m_freem(m3);
|
|
*mpp = NULL;
|
|
goto out;
|
|
}
|
|
nh->nh_nextoff = uiop->uio_offset;
|
|
tlen = len - uiop->uio_resid;
|
|
cnt = cnt < tlen ? cnt : tlen;
|
|
tlen = NFSM_RNDUP(cnt);
|
|
if (tlen == 0) {
|
|
m_freem(m3);
|
|
m3 = NULL;
|
|
} else if (len != tlen || tlen != cnt)
|
|
nfsrv_adj(m3, len - tlen, tlen - cnt);
|
|
*mpp = m3;
|
|
*mpendp = m2;
|
|
|
|
out:
|
|
NFSEXITCODE(error);
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* Write vnode op from an mbuf list.
|
|
*/
|
|
int
|
|
nfsvno_write(struct vnode *vp, off_t off, int retlen, int cnt, int *stable,
|
|
struct mbuf *mp, char *cp, struct ucred *cred, struct thread *p)
|
|
{
|
|
struct iovec *ivp;
|
|
int i, len;
|
|
struct iovec *iv;
|
|
int ioflags, error;
|
|
struct uio io, *uiop = &io;
|
|
struct nfsheur *nh;
|
|
|
|
/*
|
|
* Attempt to write to a DS file. A return of ENOENT implies
|
|
* there is no DS file to write.
|
|
*/
|
|
error = nfsrv_proxyds(NULL, vp, off, retlen, cred, p, NFSPROC_WRITEDS,
|
|
&mp, cp, NULL, NULL, NULL);
|
|
if (error != ENOENT) {
|
|
*stable = NFSWRITE_FILESYNC;
|
|
return (error);
|
|
}
|
|
|
|
ivp = malloc(cnt * sizeof (struct iovec), M_TEMP,
|
|
M_WAITOK);
|
|
uiop->uio_iov = iv = ivp;
|
|
uiop->uio_iovcnt = cnt;
|
|
i = mtod(mp, caddr_t) + mp->m_len - cp;
|
|
len = retlen;
|
|
while (len > 0) {
|
|
if (mp == NULL)
|
|
panic("nfsvno_write");
|
|
if (i > 0) {
|
|
i = min(i, len);
|
|
ivp->iov_base = cp;
|
|
ivp->iov_len = i;
|
|
ivp++;
|
|
len -= i;
|
|
}
|
|
mp = mp->m_next;
|
|
if (mp) {
|
|
i = mp->m_len;
|
|
cp = mtod(mp, caddr_t);
|
|
}
|
|
}
|
|
|
|
if (*stable == NFSWRITE_UNSTABLE)
|
|
ioflags = IO_NODELOCKED;
|
|
else
|
|
ioflags = (IO_SYNC | IO_NODELOCKED);
|
|
uiop->uio_resid = retlen;
|
|
uiop->uio_rw = UIO_WRITE;
|
|
uiop->uio_segflg = UIO_SYSSPACE;
|
|
NFSUIOPROC(uiop, p);
|
|
uiop->uio_offset = off;
|
|
nh = nfsrv_sequential_heuristic(uiop, vp);
|
|
ioflags |= nh->nh_seqcount << IO_SEQSHIFT;
|
|
/* XXX KDM make this more systematic? */
|
|
nfsstatsv1.srvbytes[NFSV4OP_WRITE] += uiop->uio_resid;
|
|
error = VOP_WRITE(vp, uiop, ioflags, cred);
|
|
if (error == 0)
|
|
nh->nh_nextoff = uiop->uio_offset;
|
|
free(iv, M_TEMP);
|
|
|
|
NFSEXITCODE(error);
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* Common code for creating a regular file (plus special files for V2).
|
|
*/
|
|
int
|
|
nfsvno_createsub(struct nfsrv_descript *nd, struct nameidata *ndp,
|
|
struct vnode **vpp, struct nfsvattr *nvap, int *exclusive_flagp,
|
|
int32_t *cverf, NFSDEV_T rdev, struct thread *p, struct nfsexstuff *exp)
|
|
{
|
|
u_quad_t tempsize;
|
|
int error;
|
|
|
|
error = nd->nd_repstat;
|
|
if (!error && ndp->ni_vp == NULL) {
|
|
if (nvap->na_type == VREG || nvap->na_type == VSOCK) {
|
|
vrele(ndp->ni_startdir);
|
|
error = VOP_CREATE(ndp->ni_dvp,
|
|
&ndp->ni_vp, &ndp->ni_cnd, &nvap->na_vattr);
|
|
/* For a pNFS server, create the data file on a DS. */
|
|
if (error == 0 && nvap->na_type == VREG) {
|
|
/*
|
|
* Create a data file on a DS for a pNFS server.
|
|
* This function just returns if not
|
|
* running a pNFS DS or the creation fails.
|
|
*/
|
|
nfsrv_pnfscreate(ndp->ni_vp, &nvap->na_vattr,
|
|
nd->nd_cred, p);
|
|
}
|
|
vput(ndp->ni_dvp);
|
|
nfsvno_relpathbuf(ndp);
|
|
if (!error) {
|
|
if (*exclusive_flagp) {
|
|
*exclusive_flagp = 0;
|
|
NFSVNO_ATTRINIT(nvap);
|
|
nvap->na_atime.tv_sec = cverf[0];
|
|
nvap->na_atime.tv_nsec = cverf[1];
|
|
error = VOP_SETATTR(ndp->ni_vp,
|
|
&nvap->na_vattr, nd->nd_cred);
|
|
if (error != 0) {
|
|
vput(ndp->ni_vp);
|
|
ndp->ni_vp = NULL;
|
|
error = NFSERR_NOTSUPP;
|
|
}
|
|
}
|
|
}
|
|
/*
|
|
* NFS V2 Only. nfsrvd_mknod() does this for V3.
|
|
* (This implies, just get out on an error.)
|
|
*/
|
|
} else if (nvap->na_type == VCHR || nvap->na_type == VBLK ||
|
|
nvap->na_type == VFIFO) {
|
|
if (nvap->na_type == VCHR && rdev == 0xffffffff)
|
|
nvap->na_type = VFIFO;
|
|
if (nvap->na_type != VFIFO &&
|
|
(error = priv_check_cred(nd->nd_cred,
|
|
PRIV_VFS_MKNOD_DEV, 0))) {
|
|
vrele(ndp->ni_startdir);
|
|
nfsvno_relpathbuf(ndp);
|
|
vput(ndp->ni_dvp);
|
|
goto out;
|
|
}
|
|
nvap->na_rdev = rdev;
|
|
error = VOP_MKNOD(ndp->ni_dvp, &ndp->ni_vp,
|
|
&ndp->ni_cnd, &nvap->na_vattr);
|
|
vput(ndp->ni_dvp);
|
|
nfsvno_relpathbuf(ndp);
|
|
vrele(ndp->ni_startdir);
|
|
if (error)
|
|
goto out;
|
|
} else {
|
|
vrele(ndp->ni_startdir);
|
|
nfsvno_relpathbuf(ndp);
|
|
vput(ndp->ni_dvp);
|
|
error = ENXIO;
|
|
goto out;
|
|
}
|
|
*vpp = ndp->ni_vp;
|
|
} else {
|
|
/*
|
|
* Handle cases where error is already set and/or
|
|
* the file exists.
|
|
* 1 - clean up the lookup
|
|
* 2 - iff !error and na_size set, truncate it
|
|
*/
|
|
vrele(ndp->ni_startdir);
|
|
nfsvno_relpathbuf(ndp);
|
|
*vpp = ndp->ni_vp;
|
|
if (ndp->ni_dvp == *vpp)
|
|
vrele(ndp->ni_dvp);
|
|
else
|
|
vput(ndp->ni_dvp);
|
|
if (!error && nvap->na_size != VNOVAL) {
|
|
error = nfsvno_accchk(*vpp, VWRITE,
|
|
nd->nd_cred, exp, p, NFSACCCHK_NOOVERRIDE,
|
|
NFSACCCHK_VPISLOCKED, NULL);
|
|
if (!error) {
|
|
tempsize = nvap->na_size;
|
|
NFSVNO_ATTRINIT(nvap);
|
|
nvap->na_size = tempsize;
|
|
error = VOP_SETATTR(*vpp,
|
|
&nvap->na_vattr, nd->nd_cred);
|
|
}
|
|
}
|
|
if (error)
|
|
vput(*vpp);
|
|
}
|
|
|
|
out:
|
|
NFSEXITCODE(error);
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* Do a mknod vnode op.
|
|
*/
|
|
int
|
|
nfsvno_mknod(struct nameidata *ndp, struct nfsvattr *nvap, struct ucred *cred,
|
|
struct thread *p)
|
|
{
|
|
int error = 0;
|
|
enum vtype vtyp;
|
|
|
|
vtyp = nvap->na_type;
|
|
/*
|
|
* Iff doesn't exist, create it.
|
|
*/
|
|
if (ndp->ni_vp) {
|
|
vrele(ndp->ni_startdir);
|
|
nfsvno_relpathbuf(ndp);
|
|
vput(ndp->ni_dvp);
|
|
vrele(ndp->ni_vp);
|
|
error = EEXIST;
|
|
goto out;
|
|
}
|
|
if (vtyp != VCHR && vtyp != VBLK && vtyp != VSOCK && vtyp != VFIFO) {
|
|
vrele(ndp->ni_startdir);
|
|
nfsvno_relpathbuf(ndp);
|
|
vput(ndp->ni_dvp);
|
|
error = NFSERR_BADTYPE;
|
|
goto out;
|
|
}
|
|
if (vtyp == VSOCK) {
|
|
vrele(ndp->ni_startdir);
|
|
error = VOP_CREATE(ndp->ni_dvp, &ndp->ni_vp,
|
|
&ndp->ni_cnd, &nvap->na_vattr);
|
|
vput(ndp->ni_dvp);
|
|
nfsvno_relpathbuf(ndp);
|
|
} else {
|
|
if (nvap->na_type != VFIFO &&
|
|
(error = priv_check_cred(cred, PRIV_VFS_MKNOD_DEV, 0))) {
|
|
vrele(ndp->ni_startdir);
|
|
nfsvno_relpathbuf(ndp);
|
|
vput(ndp->ni_dvp);
|
|
goto out;
|
|
}
|
|
error = VOP_MKNOD(ndp->ni_dvp, &ndp->ni_vp,
|
|
&ndp->ni_cnd, &nvap->na_vattr);
|
|
vput(ndp->ni_dvp);
|
|
nfsvno_relpathbuf(ndp);
|
|
vrele(ndp->ni_startdir);
|
|
/*
|
|
* Since VOP_MKNOD returns the ni_vp, I can't
|
|
* see any reason to do the lookup.
|
|
*/
|
|
}
|
|
|
|
out:
|
|
NFSEXITCODE(error);
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* Mkdir vnode op.
|
|
*/
|
|
int
|
|
nfsvno_mkdir(struct nameidata *ndp, struct nfsvattr *nvap, uid_t saved_uid,
|
|
struct ucred *cred, struct thread *p, struct nfsexstuff *exp)
|
|
{
|
|
int error = 0;
|
|
|
|
if (ndp->ni_vp != NULL) {
|
|
if (ndp->ni_dvp == ndp->ni_vp)
|
|
vrele(ndp->ni_dvp);
|
|
else
|
|
vput(ndp->ni_dvp);
|
|
vrele(ndp->ni_vp);
|
|
nfsvno_relpathbuf(ndp);
|
|
error = EEXIST;
|
|
goto out;
|
|
}
|
|
error = VOP_MKDIR(ndp->ni_dvp, &ndp->ni_vp, &ndp->ni_cnd,
|
|
&nvap->na_vattr);
|
|
vput(ndp->ni_dvp);
|
|
nfsvno_relpathbuf(ndp);
|
|
|
|
out:
|
|
NFSEXITCODE(error);
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* symlink vnode op.
|
|
*/
|
|
int
|
|
nfsvno_symlink(struct nameidata *ndp, struct nfsvattr *nvap, char *pathcp,
|
|
int pathlen, int not_v2, uid_t saved_uid, struct ucred *cred, struct thread *p,
|
|
struct nfsexstuff *exp)
|
|
{
|
|
int error = 0;
|
|
|
|
if (ndp->ni_vp) {
|
|
vrele(ndp->ni_startdir);
|
|
nfsvno_relpathbuf(ndp);
|
|
if (ndp->ni_dvp == ndp->ni_vp)
|
|
vrele(ndp->ni_dvp);
|
|
else
|
|
vput(ndp->ni_dvp);
|
|
vrele(ndp->ni_vp);
|
|
error = EEXIST;
|
|
goto out;
|
|
}
|
|
|
|
error = VOP_SYMLINK(ndp->ni_dvp, &ndp->ni_vp, &ndp->ni_cnd,
|
|
&nvap->na_vattr, pathcp);
|
|
vput(ndp->ni_dvp);
|
|
vrele(ndp->ni_startdir);
|
|
nfsvno_relpathbuf(ndp);
|
|
/*
|
|
* Although FreeBSD still had the lookup code in
|
|
* it for 7/current, there doesn't seem to be any
|
|
* point, since VOP_SYMLINK() returns the ni_vp.
|
|
* Just vput it for v2.
|
|
*/
|
|
if (!not_v2 && !error)
|
|
vput(ndp->ni_vp);
|
|
|
|
out:
|
|
NFSEXITCODE(error);
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* Parse symbolic link arguments.
|
|
* This function has an ugly side effect. It will malloc() an area for
|
|
* the symlink and set iov_base to point to it, only if it succeeds.
|
|
* So, if it returns with uiop->uio_iov->iov_base != NULL, that must
|
|
* be FREE'd later.
|
|
*/
|
|
int
|
|
nfsvno_getsymlink(struct nfsrv_descript *nd, struct nfsvattr *nvap,
|
|
struct thread *p, char **pathcpp, int *lenp)
|
|
{
|
|
u_int32_t *tl;
|
|
char *pathcp = NULL;
|
|
int error = 0, len;
|
|
struct nfsv2_sattr *sp;
|
|
|
|
*pathcpp = NULL;
|
|
*lenp = 0;
|
|
if ((nd->nd_flag & ND_NFSV3) &&
|
|
(error = nfsrv_sattr(nd, NULL, nvap, NULL, NULL, p)))
|
|
goto nfsmout;
|
|
NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
|
|
len = fxdr_unsigned(int, *tl);
|
|
if (len > NFS_MAXPATHLEN || len <= 0) {
|
|
error = EBADRPC;
|
|
goto nfsmout;
|
|
}
|
|
pathcp = malloc(len + 1, M_TEMP, M_WAITOK);
|
|
error = nfsrv_mtostr(nd, pathcp, len);
|
|
if (error)
|
|
goto nfsmout;
|
|
if (nd->nd_flag & ND_NFSV2) {
|
|
NFSM_DISSECT(sp, struct nfsv2_sattr *, NFSX_V2SATTR);
|
|
nvap->na_mode = fxdr_unsigned(u_int16_t, sp->sa_mode);
|
|
}
|
|
*pathcpp = pathcp;
|
|
*lenp = len;
|
|
NFSEXITCODE2(0, nd);
|
|
return (0);
|
|
nfsmout:
|
|
if (pathcp)
|
|
free(pathcp, M_TEMP);
|
|
NFSEXITCODE2(error, nd);
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* Remove a non-directory object.
|
|
*/
|
|
int
|
|
nfsvno_removesub(struct nameidata *ndp, int is_v4, struct ucred *cred,
|
|
struct thread *p, struct nfsexstuff *exp)
|
|
{
|
|
struct vnode *vp, *dsdvp[NFSDEV_MAXMIRRORS];
|
|
int error = 0, mirrorcnt;
|
|
char fname[PNFS_FILENAME_LEN + 1];
|
|
fhandle_t fh;
|
|
|
|
vp = ndp->ni_vp;
|
|
dsdvp[0] = NULL;
|
|
if (vp->v_type == VDIR)
|
|
error = NFSERR_ISDIR;
|
|
else if (is_v4)
|
|
error = nfsrv_checkremove(vp, 1, p);
|
|
if (error == 0)
|
|
nfsrv_pnfsremovesetup(vp, p, dsdvp, &mirrorcnt, fname, &fh);
|
|
if (!error)
|
|
error = VOP_REMOVE(ndp->ni_dvp, vp, &ndp->ni_cnd);
|
|
if (error == 0 && dsdvp[0] != NULL)
|
|
nfsrv_pnfsremove(dsdvp, mirrorcnt, fname, &fh, p);
|
|
if (ndp->ni_dvp == vp)
|
|
vrele(ndp->ni_dvp);
|
|
else
|
|
vput(ndp->ni_dvp);
|
|
vput(vp);
|
|
if ((ndp->ni_cnd.cn_flags & SAVENAME) != 0)
|
|
nfsvno_relpathbuf(ndp);
|
|
NFSEXITCODE(error);
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* Remove a directory.
|
|
*/
|
|
int
|
|
nfsvno_rmdirsub(struct nameidata *ndp, int is_v4, struct ucred *cred,
|
|
struct thread *p, struct nfsexstuff *exp)
|
|
{
|
|
struct vnode *vp;
|
|
int error = 0;
|
|
|
|
vp = ndp->ni_vp;
|
|
if (vp->v_type != VDIR) {
|
|
error = ENOTDIR;
|
|
goto out;
|
|
}
|
|
/*
|
|
* No rmdir "." please.
|
|
*/
|
|
if (ndp->ni_dvp == vp) {
|
|
error = EINVAL;
|
|
goto out;
|
|
}
|
|
/*
|
|
* The root of a mounted filesystem cannot be deleted.
|
|
*/
|
|
if (vp->v_vflag & VV_ROOT)
|
|
error = EBUSY;
|
|
out:
|
|
if (!error)
|
|
error = VOP_RMDIR(ndp->ni_dvp, vp, &ndp->ni_cnd);
|
|
if (ndp->ni_dvp == vp)
|
|
vrele(ndp->ni_dvp);
|
|
else
|
|
vput(ndp->ni_dvp);
|
|
vput(vp);
|
|
if ((ndp->ni_cnd.cn_flags & SAVENAME) != 0)
|
|
nfsvno_relpathbuf(ndp);
|
|
NFSEXITCODE(error);
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* Rename vnode op.
|
|
*/
|
|
int
|
|
nfsvno_rename(struct nameidata *fromndp, struct nameidata *tondp,
|
|
u_int32_t ndstat, u_int32_t ndflag, struct ucred *cred, struct thread *p)
|
|
{
|
|
struct vnode *fvp, *tvp, *tdvp, *dsdvp[NFSDEV_MAXMIRRORS];
|
|
int error = 0, mirrorcnt;
|
|
char fname[PNFS_FILENAME_LEN + 1];
|
|
fhandle_t fh;
|
|
|
|
dsdvp[0] = NULL;
|
|
fvp = fromndp->ni_vp;
|
|
if (ndstat) {
|
|
vrele(fromndp->ni_dvp);
|
|
vrele(fvp);
|
|
error = ndstat;
|
|
goto out1;
|
|
}
|
|
tdvp = tondp->ni_dvp;
|
|
tvp = tondp->ni_vp;
|
|
if (tvp != NULL) {
|
|
if (fvp->v_type == VDIR && tvp->v_type != VDIR) {
|
|
error = (ndflag & ND_NFSV2) ? EISDIR : EEXIST;
|
|
goto out;
|
|
} else if (fvp->v_type != VDIR && tvp->v_type == VDIR) {
|
|
error = (ndflag & ND_NFSV2) ? ENOTDIR : EEXIST;
|
|
goto out;
|
|
}
|
|
if (tvp->v_type == VDIR && tvp->v_mountedhere) {
|
|
error = (ndflag & ND_NFSV2) ? ENOTEMPTY : EXDEV;
|
|
goto out;
|
|
}
|
|
|
|
/*
|
|
* A rename to '.' or '..' results in a prematurely
|
|
* unlocked vnode on FreeBSD5, so I'm just going to fail that
|
|
* here.
|
|
*/
|
|
if ((tondp->ni_cnd.cn_namelen == 1 &&
|
|
tondp->ni_cnd.cn_nameptr[0] == '.') ||
|
|
(tondp->ni_cnd.cn_namelen == 2 &&
|
|
tondp->ni_cnd.cn_nameptr[0] == '.' &&
|
|
tondp->ni_cnd.cn_nameptr[1] == '.')) {
|
|
error = EINVAL;
|
|
goto out;
|
|
}
|
|
}
|
|
if (fvp->v_type == VDIR && fvp->v_mountedhere) {
|
|
error = (ndflag & ND_NFSV2) ? ENOTEMPTY : EXDEV;
|
|
goto out;
|
|
}
|
|
if (fvp->v_mount != tdvp->v_mount) {
|
|
error = (ndflag & ND_NFSV2) ? ENOTEMPTY : EXDEV;
|
|
goto out;
|
|
}
|
|
if (fvp == tdvp) {
|
|
error = (ndflag & ND_NFSV2) ? ENOTEMPTY : EINVAL;
|
|
goto out;
|
|
}
|
|
if (fvp == tvp) {
|
|
/*
|
|
* If source and destination are the same, there is nothing to
|
|
* do. Set error to -1 to indicate this.
|
|
*/
|
|
error = -1;
|
|
goto out;
|
|
}
|
|
if (ndflag & ND_NFSV4) {
|
|
if (NFSVOPLOCK(fvp, LK_EXCLUSIVE) == 0) {
|
|
error = nfsrv_checkremove(fvp, 0, p);
|
|
NFSVOPUNLOCK(fvp, 0);
|
|
} else
|
|
error = EPERM;
|
|
if (tvp && !error)
|
|
error = nfsrv_checkremove(tvp, 1, p);
|
|
} else {
|
|
/*
|
|
* For NFSv2 and NFSv3, try to get rid of the delegation, so
|
|
* that the NFSv4 client won't be confused by the rename.
|
|
* Since nfsd_recalldelegation() can only be called on an
|
|
* unlocked vnode at this point and fvp is the file that will
|
|
* still exist after the rename, just do fvp.
|
|
*/
|
|
nfsd_recalldelegation(fvp, p);
|
|
}
|
|
if (error == 0 && tvp != NULL) {
|
|
nfsrv_pnfsremovesetup(tvp, p, dsdvp, &mirrorcnt, fname, &fh);
|
|
NFSD_DEBUG(4, "nfsvno_rename: pnfsremovesetup"
|
|
" dsdvp=%p\n", dsdvp[0]);
|
|
}
|
|
out:
|
|
if (!error) {
|
|
error = VOP_RENAME(fromndp->ni_dvp, fromndp->ni_vp,
|
|
&fromndp->ni_cnd, tondp->ni_dvp, tondp->ni_vp,
|
|
&tondp->ni_cnd);
|
|
} else {
|
|
if (tdvp == tvp)
|
|
vrele(tdvp);
|
|
else
|
|
vput(tdvp);
|
|
if (tvp)
|
|
vput(tvp);
|
|
vrele(fromndp->ni_dvp);
|
|
vrele(fvp);
|
|
if (error == -1)
|
|
error = 0;
|
|
}
|
|
|
|
/*
|
|
* If dsdvp[0] != NULL, it was set up by nfsrv_pnfsremovesetup() and
|
|
* if the rename succeeded, the DS file for the tvp needs to be
|
|
* removed.
|
|
*/
|
|
if (error == 0 && dsdvp[0] != NULL) {
|
|
nfsrv_pnfsremove(dsdvp, mirrorcnt, fname, &fh, p);
|
|
NFSD_DEBUG(4, "nfsvno_rename: pnfsremove\n");
|
|
}
|
|
|
|
vrele(tondp->ni_startdir);
|
|
nfsvno_relpathbuf(tondp);
|
|
out1:
|
|
vrele(fromndp->ni_startdir);
|
|
nfsvno_relpathbuf(fromndp);
|
|
NFSEXITCODE(error);
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* Link vnode op.
|
|
*/
|
|
int
|
|
nfsvno_link(struct nameidata *ndp, struct vnode *vp, struct ucred *cred,
|
|
struct thread *p, struct nfsexstuff *exp)
|
|
{
|
|
struct vnode *xp;
|
|
int error = 0;
|
|
|
|
xp = ndp->ni_vp;
|
|
if (xp != NULL) {
|
|
error = EEXIST;
|
|
} else {
|
|
xp = ndp->ni_dvp;
|
|
if (vp->v_mount != xp->v_mount)
|
|
error = EXDEV;
|
|
}
|
|
if (!error) {
|
|
NFSVOPLOCK(vp, LK_EXCLUSIVE | LK_RETRY);
|
|
if ((vp->v_iflag & VI_DOOMED) == 0)
|
|
error = VOP_LINK(ndp->ni_dvp, vp, &ndp->ni_cnd);
|
|
else
|
|
error = EPERM;
|
|
if (ndp->ni_dvp == vp)
|
|
vrele(ndp->ni_dvp);
|
|
else
|
|
vput(ndp->ni_dvp);
|
|
NFSVOPUNLOCK(vp, 0);
|
|
} else {
|
|
if (ndp->ni_dvp == ndp->ni_vp)
|
|
vrele(ndp->ni_dvp);
|
|
else
|
|
vput(ndp->ni_dvp);
|
|
if (ndp->ni_vp)
|
|
vrele(ndp->ni_vp);
|
|
}
|
|
nfsvno_relpathbuf(ndp);
|
|
NFSEXITCODE(error);
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* Do the fsync() appropriate for the commit.
|
|
*/
|
|
int
|
|
nfsvno_fsync(struct vnode *vp, u_int64_t off, int cnt, struct ucred *cred,
|
|
struct thread *td)
|
|
{
|
|
int error = 0;
|
|
|
|
/*
|
|
* RFC 1813 3.3.21: if count is 0, a flush from offset to the end of
|
|
* file is done. At this time VOP_FSYNC does not accept offset and
|
|
* byte count parameters so call VOP_FSYNC the whole file for now.
|
|
* The same is true for NFSv4: RFC 3530 Sec. 14.2.3.
|
|
* File systems that do not use the buffer cache (as indicated
|
|
* by MNTK_USES_BCACHE not being set) must use VOP_FSYNC().
|
|
*/
|
|
if (cnt == 0 || cnt > MAX_COMMIT_COUNT ||
|
|
(vp->v_mount->mnt_kern_flag & MNTK_USES_BCACHE) == 0) {
|
|
/*
|
|
* Give up and do the whole thing
|
|
*/
|
|
if (vp->v_object &&
|
|
(vp->v_object->flags & OBJ_MIGHTBEDIRTY)) {
|
|
VM_OBJECT_WLOCK(vp->v_object);
|
|
vm_object_page_clean(vp->v_object, 0, 0, OBJPC_SYNC);
|
|
VM_OBJECT_WUNLOCK(vp->v_object);
|
|
}
|
|
error = VOP_FSYNC(vp, MNT_WAIT, td);
|
|
} else {
|
|
/*
|
|
* Locate and synchronously write any buffers that fall
|
|
* into the requested range. Note: we are assuming that
|
|
* f_iosize is a power of 2.
|
|
*/
|
|
int iosize = vp->v_mount->mnt_stat.f_iosize;
|
|
int iomask = iosize - 1;
|
|
struct bufobj *bo;
|
|
daddr_t lblkno;
|
|
|
|
/*
|
|
* Align to iosize boundary, super-align to page boundary.
|
|
*/
|
|
if (off & iomask) {
|
|
cnt += off & iomask;
|
|
off &= ~(u_quad_t)iomask;
|
|
}
|
|
if (off & PAGE_MASK) {
|
|
cnt += off & PAGE_MASK;
|
|
off &= ~(u_quad_t)PAGE_MASK;
|
|
}
|
|
lblkno = off / iosize;
|
|
|
|
if (vp->v_object &&
|
|
(vp->v_object->flags & OBJ_MIGHTBEDIRTY)) {
|
|
VM_OBJECT_WLOCK(vp->v_object);
|
|
vm_object_page_clean(vp->v_object, off, off + cnt,
|
|
OBJPC_SYNC);
|
|
VM_OBJECT_WUNLOCK(vp->v_object);
|
|
}
|
|
|
|
bo = &vp->v_bufobj;
|
|
BO_LOCK(bo);
|
|
while (cnt > 0) {
|
|
struct buf *bp;
|
|
|
|
/*
|
|
* If we have a buffer and it is marked B_DELWRI we
|
|
* have to lock and write it. Otherwise the prior
|
|
* write is assumed to have already been committed.
|
|
*
|
|
* gbincore() can return invalid buffers now so we
|
|
* have to check that bit as well (though B_DELWRI
|
|
* should not be set if B_INVAL is set there could be
|
|
* a race here since we haven't locked the buffer).
|
|
*/
|
|
if ((bp = gbincore(&vp->v_bufobj, lblkno)) != NULL) {
|
|
if (BUF_LOCK(bp, LK_EXCLUSIVE | LK_SLEEPFAIL |
|
|
LK_INTERLOCK, BO_LOCKPTR(bo)) == ENOLCK) {
|
|
BO_LOCK(bo);
|
|
continue; /* retry */
|
|
}
|
|
if ((bp->b_flags & (B_DELWRI|B_INVAL)) ==
|
|
B_DELWRI) {
|
|
bremfree(bp);
|
|
bp->b_flags &= ~B_ASYNC;
|
|
bwrite(bp);
|
|
++nfs_commit_miss;
|
|
} else
|
|
BUF_UNLOCK(bp);
|
|
BO_LOCK(bo);
|
|
}
|
|
++nfs_commit_blks;
|
|
if (cnt < iosize)
|
|
break;
|
|
cnt -= iosize;
|
|
++lblkno;
|
|
}
|
|
BO_UNLOCK(bo);
|
|
}
|
|
NFSEXITCODE(error);
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* Statfs vnode op.
|
|
*/
|
|
int
|
|
nfsvno_statfs(struct vnode *vp, struct statfs *sf)
|
|
{
|
|
struct statfs *tsf;
|
|
int error;
|
|
|
|
tsf = NULL;
|
|
if (nfsrv_devidcnt > 0) {
|
|
/* For a pNFS service, get the DS numbers. */
|
|
tsf = malloc(sizeof(*tsf), M_TEMP, M_WAITOK | M_ZERO);
|
|
error = nfsrv_pnfsstatfs(tsf);
|
|
if (error != 0) {
|
|
free(tsf, M_TEMP);
|
|
tsf = NULL;
|
|
}
|
|
}
|
|
error = VFS_STATFS(vp->v_mount, sf);
|
|
if (error == 0) {
|
|
if (tsf != NULL) {
|
|
sf->f_blocks = tsf->f_blocks;
|
|
sf->f_bavail = tsf->f_bavail;
|
|
sf->f_bfree = tsf->f_bfree;
|
|
sf->f_bsize = tsf->f_bsize;
|
|
}
|
|
/*
|
|
* Since NFS handles these values as unsigned on the
|
|
* wire, there is no way to represent negative values,
|
|
* so set them to 0. Without this, they will appear
|
|
* to be very large positive values for clients like
|
|
* Solaris10.
|
|
*/
|
|
if (sf->f_bavail < 0)
|
|
sf->f_bavail = 0;
|
|
if (sf->f_ffree < 0)
|
|
sf->f_ffree = 0;
|
|
}
|
|
free(tsf, M_TEMP);
|
|
NFSEXITCODE(error);
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* Do the vnode op stuff for Open. Similar to nfsvno_createsub(), but
|
|
* must handle nfsrv_opencheck() calls after any other access checks.
|
|
*/
|
|
void
|
|
nfsvno_open(struct nfsrv_descript *nd, struct nameidata *ndp,
|
|
nfsquad_t clientid, nfsv4stateid_t *stateidp, struct nfsstate *stp,
|
|
int *exclusive_flagp, struct nfsvattr *nvap, int32_t *cverf, int create,
|
|
NFSACL_T *aclp, nfsattrbit_t *attrbitp, struct ucred *cred, struct thread *p,
|
|
struct nfsexstuff *exp, struct vnode **vpp)
|
|
{
|
|
struct vnode *vp = NULL;
|
|
u_quad_t tempsize;
|
|
struct nfsexstuff nes;
|
|
|
|
if (ndp->ni_vp == NULL)
|
|
nd->nd_repstat = nfsrv_opencheck(clientid,
|
|
stateidp, stp, NULL, nd, p, nd->nd_repstat);
|
|
if (!nd->nd_repstat) {
|
|
if (ndp->ni_vp == NULL) {
|
|
vrele(ndp->ni_startdir);
|
|
nd->nd_repstat = VOP_CREATE(ndp->ni_dvp,
|
|
&ndp->ni_vp, &ndp->ni_cnd, &nvap->na_vattr);
|
|
/* For a pNFS server, create the data file on a DS. */
|
|
if (nd->nd_repstat == 0) {
|
|
/*
|
|
* Create a data file on a DS for a pNFS server.
|
|
* This function just returns if not
|
|
* running a pNFS DS or the creation fails.
|
|
*/
|
|
nfsrv_pnfscreate(ndp->ni_vp, &nvap->na_vattr,
|
|
cred, p);
|
|
}
|
|
vput(ndp->ni_dvp);
|
|
nfsvno_relpathbuf(ndp);
|
|
if (!nd->nd_repstat) {
|
|
if (*exclusive_flagp) {
|
|
*exclusive_flagp = 0;
|
|
NFSVNO_ATTRINIT(nvap);
|
|
nvap->na_atime.tv_sec = cverf[0];
|
|
nvap->na_atime.tv_nsec = cverf[1];
|
|
nd->nd_repstat = VOP_SETATTR(ndp->ni_vp,
|
|
&nvap->na_vattr, cred);
|
|
if (nd->nd_repstat != 0) {
|
|
vput(ndp->ni_vp);
|
|
ndp->ni_vp = NULL;
|
|
nd->nd_repstat = NFSERR_NOTSUPP;
|
|
} else
|
|
NFSSETBIT_ATTRBIT(attrbitp,
|
|
NFSATTRBIT_TIMEACCESS);
|
|
} else {
|
|
nfsrv_fixattr(nd, ndp->ni_vp, nvap,
|
|
aclp, p, attrbitp, exp);
|
|
}
|
|
}
|
|
vp = ndp->ni_vp;
|
|
} else {
|
|
if (ndp->ni_startdir)
|
|
vrele(ndp->ni_startdir);
|
|
nfsvno_relpathbuf(ndp);
|
|
vp = ndp->ni_vp;
|
|
if (create == NFSV4OPEN_CREATE) {
|
|
if (ndp->ni_dvp == vp)
|
|
vrele(ndp->ni_dvp);
|
|
else
|
|
vput(ndp->ni_dvp);
|
|
}
|
|
if (NFSVNO_ISSETSIZE(nvap) && vp->v_type == VREG) {
|
|
if (ndp->ni_cnd.cn_flags & RDONLY)
|
|
NFSVNO_SETEXRDONLY(&nes);
|
|
else
|
|
NFSVNO_EXINIT(&nes);
|
|
nd->nd_repstat = nfsvno_accchk(vp,
|
|
VWRITE, cred, &nes, p,
|
|
NFSACCCHK_NOOVERRIDE,
|
|
NFSACCCHK_VPISLOCKED, NULL);
|
|
nd->nd_repstat = nfsrv_opencheck(clientid,
|
|
stateidp, stp, vp, nd, p, nd->nd_repstat);
|
|
if (!nd->nd_repstat) {
|
|
tempsize = nvap->na_size;
|
|
NFSVNO_ATTRINIT(nvap);
|
|
nvap->na_size = tempsize;
|
|
nd->nd_repstat = VOP_SETATTR(vp,
|
|
&nvap->na_vattr, cred);
|
|
}
|
|
} else if (vp->v_type == VREG) {
|
|
nd->nd_repstat = nfsrv_opencheck(clientid,
|
|
stateidp, stp, vp, nd, p, nd->nd_repstat);
|
|
}
|
|
}
|
|
} else {
|
|
if (ndp->ni_cnd.cn_flags & HASBUF)
|
|
nfsvno_relpathbuf(ndp);
|
|
if (ndp->ni_startdir && create == NFSV4OPEN_CREATE) {
|
|
vrele(ndp->ni_startdir);
|
|
if (ndp->ni_dvp == ndp->ni_vp)
|
|
vrele(ndp->ni_dvp);
|
|
else
|
|
vput(ndp->ni_dvp);
|
|
if (ndp->ni_vp)
|
|
vput(ndp->ni_vp);
|
|
}
|
|
}
|
|
*vpp = vp;
|
|
|
|
NFSEXITCODE2(0, nd);
|
|
}
|
|
|
|
/*
|
|
* Updates the file rev and sets the mtime and ctime
|
|
* to the current clock time, returning the va_filerev and va_Xtime
|
|
* values.
|
|
* Return ESTALE to indicate the vnode is VI_DOOMED.
|
|
*/
|
|
int
|
|
nfsvno_updfilerev(struct vnode *vp, struct nfsvattr *nvap,
|
|
struct nfsrv_descript *nd, struct thread *p)
|
|
{
|
|
struct vattr va;
|
|
|
|
VATTR_NULL(&va);
|
|
vfs_timestamp(&va.va_mtime);
|
|
if (NFSVOPISLOCKED(vp) != LK_EXCLUSIVE) {
|
|
NFSVOPLOCK(vp, LK_UPGRADE | LK_RETRY);
|
|
if ((vp->v_iflag & VI_DOOMED) != 0)
|
|
return (ESTALE);
|
|
}
|
|
(void) VOP_SETATTR(vp, &va, nd->nd_cred);
|
|
(void) nfsvno_getattr(vp, nvap, nd, p, 1, NULL);
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Glue routine to nfsv4_fillattr().
|
|
*/
|
|
int
|
|
nfsvno_fillattr(struct nfsrv_descript *nd, struct mount *mp, struct vnode *vp,
|
|
struct nfsvattr *nvap, fhandle_t *fhp, int rderror, nfsattrbit_t *attrbitp,
|
|
struct ucred *cred, struct thread *p, int isdgram, int reterr,
|
|
int supports_nfsv4acls, int at_root, uint64_t mounted_on_fileno)
|
|
{
|
|
struct statfs *sf;
|
|
int error;
|
|
|
|
sf = NULL;
|
|
if (nfsrv_devidcnt > 0 &&
|
|
(NFSISSET_ATTRBIT(attrbitp, NFSATTRBIT_SPACEAVAIL) ||
|
|
NFSISSET_ATTRBIT(attrbitp, NFSATTRBIT_SPACEFREE) ||
|
|
NFSISSET_ATTRBIT(attrbitp, NFSATTRBIT_SPACETOTAL))) {
|
|
sf = malloc(sizeof(*sf), M_TEMP, M_WAITOK | M_ZERO);
|
|
error = nfsrv_pnfsstatfs(sf);
|
|
if (error != 0) {
|
|
free(sf, M_TEMP);
|
|
sf = NULL;
|
|
}
|
|
}
|
|
error = nfsv4_fillattr(nd, mp, vp, NULL, &nvap->na_vattr, fhp, rderror,
|
|
attrbitp, cred, p, isdgram, reterr, supports_nfsv4acls, at_root,
|
|
mounted_on_fileno, sf);
|
|
free(sf, M_TEMP);
|
|
NFSEXITCODE2(0, nd);
|
|
return (error);
|
|
}
|
|
|
|
/* Since the Readdir vnode ops vary, put the entire functions in here. */
|
|
/*
|
|
* nfs readdir service
|
|
* - mallocs what it thinks is enough to read
|
|
* count rounded up to a multiple of 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 trims out records with d_fileno == 0
|
|
* this doesn't matter for Unix clients, but they might confuse clients
|
|
* for other os'.
|
|
* - it trims out records with d_type == DT_WHT
|
|
* these cannot be seen through NFS (unless we extend the protocol)
|
|
* The alternate call nfsrvd_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.
|
|
*/
|
|
int
|
|
nfsrvd_readdir(struct nfsrv_descript *nd, int isdgram,
|
|
struct vnode *vp, struct thread *p, struct nfsexstuff *exp)
|
|
{
|
|
struct dirent *dp;
|
|
u_int32_t *tl;
|
|
int dirlen;
|
|
char *cpos, *cend, *rbuf;
|
|
struct nfsvattr at;
|
|
int nlen, error = 0, getret = 1;
|
|
int siz, cnt, fullsiz, eofflag, ncookies;
|
|
u_int64_t off, toff, verf __unused;
|
|
u_long *cookies = NULL, *cookiep;
|
|
struct uio io;
|
|
struct iovec iv;
|
|
int is_ufs;
|
|
|
|
if (nd->nd_repstat) {
|
|
nfsrv_postopattr(nd, getret, &at);
|
|
goto out;
|
|
}
|
|
if (nd->nd_flag & ND_NFSV2) {
|
|
NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
|
|
off = fxdr_unsigned(u_quad_t, *tl++);
|
|
} else {
|
|
NFSM_DISSECT(tl, u_int32_t *, 5 * NFSX_UNSIGNED);
|
|
off = fxdr_hyper(tl);
|
|
tl += 2;
|
|
verf = fxdr_hyper(tl);
|
|
tl += 2;
|
|
}
|
|
toff = off;
|
|
cnt = fxdr_unsigned(int, *tl);
|
|
if (cnt > NFS_SRVMAXDATA(nd) || cnt < 0)
|
|
cnt = NFS_SRVMAXDATA(nd);
|
|
siz = ((cnt + DIRBLKSIZ - 1) & ~(DIRBLKSIZ - 1));
|
|
fullsiz = siz;
|
|
if (nd->nd_flag & ND_NFSV3) {
|
|
nd->nd_repstat = getret = nfsvno_getattr(vp, &at, nd, p, 1,
|
|
NULL);
|
|
#if 0
|
|
/*
|
|
* va_filerev is not sufficient as a cookie verifier,
|
|
* since it is not supposed to change when entries are
|
|
* removed/added unless that offset cookies returned to
|
|
* the client are no longer valid.
|
|
*/
|
|
if (!nd->nd_repstat && toff && verf != at.na_filerev)
|
|
nd->nd_repstat = NFSERR_BAD_COOKIE;
|
|
#endif
|
|
}
|
|
if (!nd->nd_repstat && vp->v_type != VDIR)
|
|
nd->nd_repstat = NFSERR_NOTDIR;
|
|
if (nd->nd_repstat == 0 && cnt == 0) {
|
|
if (nd->nd_flag & ND_NFSV2)
|
|
/* NFSv2 does not have NFSERR_TOOSMALL */
|
|
nd->nd_repstat = EPERM;
|
|
else
|
|
nd->nd_repstat = NFSERR_TOOSMALL;
|
|
}
|
|
if (!nd->nd_repstat)
|
|
nd->nd_repstat = nfsvno_accchk(vp, VEXEC,
|
|
nd->nd_cred, exp, p, NFSACCCHK_NOOVERRIDE,
|
|
NFSACCCHK_VPISLOCKED, NULL);
|
|
if (nd->nd_repstat) {
|
|
vput(vp);
|
|
if (nd->nd_flag & ND_NFSV3)
|
|
nfsrv_postopattr(nd, getret, &at);
|
|
goto out;
|
|
}
|
|
is_ufs = strcmp(vp->v_mount->mnt_vfc->vfc_name, "ufs") == 0;
|
|
rbuf = malloc(siz, M_TEMP, M_WAITOK);
|
|
again:
|
|
eofflag = 0;
|
|
if (cookies) {
|
|
free(cookies, M_TEMP);
|
|
cookies = NULL;
|
|
}
|
|
|
|
iv.iov_base = rbuf;
|
|
iv.iov_len = siz;
|
|
io.uio_iov = &iv;
|
|
io.uio_iovcnt = 1;
|
|
io.uio_offset = (off_t)off;
|
|
io.uio_resid = siz;
|
|
io.uio_segflg = UIO_SYSSPACE;
|
|
io.uio_rw = UIO_READ;
|
|
io.uio_td = NULL;
|
|
nd->nd_repstat = VOP_READDIR(vp, &io, nd->nd_cred, &eofflag, &ncookies,
|
|
&cookies);
|
|
off = (u_int64_t)io.uio_offset;
|
|
if (io.uio_resid)
|
|
siz -= io.uio_resid;
|
|
|
|
if (!cookies && !nd->nd_repstat)
|
|
nd->nd_repstat = NFSERR_PERM;
|
|
if (nd->nd_flag & ND_NFSV3) {
|
|
getret = nfsvno_getattr(vp, &at, nd, p, 1, NULL);
|
|
if (!nd->nd_repstat)
|
|
nd->nd_repstat = getret;
|
|
}
|
|
|
|
/*
|
|
* Handles the failed cases. nd->nd_repstat == 0 past here.
|
|
*/
|
|
if (nd->nd_repstat) {
|
|
vput(vp);
|
|
free(rbuf, M_TEMP);
|
|
if (cookies)
|
|
free(cookies, M_TEMP);
|
|
if (nd->nd_flag & ND_NFSV3)
|
|
nfsrv_postopattr(nd, getret, &at);
|
|
goto out;
|
|
}
|
|
/*
|
|
* If nothing read, return eof
|
|
* rpc reply
|
|
*/
|
|
if (siz == 0) {
|
|
vput(vp);
|
|
if (nd->nd_flag & ND_NFSV2) {
|
|
NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
|
|
} else {
|
|
nfsrv_postopattr(nd, getret, &at);
|
|
NFSM_BUILD(tl, u_int32_t *, 4 * NFSX_UNSIGNED);
|
|
txdr_hyper(at.na_filerev, tl);
|
|
tl += 2;
|
|
}
|
|
*tl++ = newnfs_false;
|
|
*tl = newnfs_true;
|
|
free(rbuf, M_TEMP);
|
|
free(cookies, M_TEMP);
|
|
goto out;
|
|
}
|
|
|
|
/*
|
|
* Check for degenerate cases of nothing useful read.
|
|
* If so go try again
|
|
*/
|
|
cpos = rbuf;
|
|
cend = rbuf + siz;
|
|
dp = (struct dirent *)cpos;
|
|
cookiep = cookies;
|
|
|
|
/*
|
|
* 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 precede the requested offset. This
|
|
* requires the assumption that file offset cookies monotonically
|
|
* increase.
|
|
*/
|
|
while (cpos < cend && ncookies > 0 &&
|
|
(dp->d_fileno == 0 || dp->d_type == DT_WHT ||
|
|
(is_ufs == 1 && ((u_quad_t)(*cookiep)) <= toff))) {
|
|
cpos += dp->d_reclen;
|
|
dp = (struct dirent *)cpos;
|
|
cookiep++;
|
|
ncookies--;
|
|
}
|
|
if (cpos >= cend || ncookies == 0) {
|
|
siz = fullsiz;
|
|
toff = off;
|
|
goto again;
|
|
}
|
|
vput(vp);
|
|
|
|
/*
|
|
* dirlen is the size of the reply, including all XDR and must
|
|
* not exceed cnt. For NFSv2, RFC1094 didn't clearly indicate
|
|
* if the XDR should be included in "count", but to be safe, we do.
|
|
* (Include the two booleans at the end of the reply in dirlen now.)
|
|
*/
|
|
if (nd->nd_flag & ND_NFSV3) {
|
|
nfsrv_postopattr(nd, getret, &at);
|
|
NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
|
|
txdr_hyper(at.na_filerev, tl);
|
|
dirlen = NFSX_V3POSTOPATTR + NFSX_VERF + 2 * NFSX_UNSIGNED;
|
|
} else {
|
|
dirlen = 2 * NFSX_UNSIGNED;
|
|
}
|
|
|
|
/* Loop through the records and build reply */
|
|
while (cpos < cend && ncookies > 0) {
|
|
nlen = dp->d_namlen;
|
|
if (dp->d_fileno != 0 && dp->d_type != DT_WHT &&
|
|
nlen <= NFS_MAXNAMLEN) {
|
|
if (nd->nd_flag & ND_NFSV3)
|
|
dirlen += (6*NFSX_UNSIGNED + NFSM_RNDUP(nlen));
|
|
else
|
|
dirlen += (4*NFSX_UNSIGNED + NFSM_RNDUP(nlen));
|
|
if (dirlen > cnt) {
|
|
eofflag = 0;
|
|
break;
|
|
}
|
|
|
|
/*
|
|
* Build the directory record xdr from
|
|
* the dirent entry.
|
|
*/
|
|
if (nd->nd_flag & ND_NFSV3) {
|
|
NFSM_BUILD(tl, u_int32_t *, 3 * NFSX_UNSIGNED);
|
|
*tl++ = newnfs_true;
|
|
*tl++ = 0;
|
|
} else {
|
|
NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
|
|
*tl++ = newnfs_true;
|
|
}
|
|
*tl = txdr_unsigned(dp->d_fileno);
|
|
(void) nfsm_strtom(nd, dp->d_name, nlen);
|
|
if (nd->nd_flag & ND_NFSV3) {
|
|
NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
|
|
*tl++ = 0;
|
|
} else
|
|
NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
|
|
*tl = txdr_unsigned(*cookiep);
|
|
}
|
|
cpos += dp->d_reclen;
|
|
dp = (struct dirent *)cpos;
|
|
cookiep++;
|
|
ncookies--;
|
|
}
|
|
if (cpos < cend)
|
|
eofflag = 0;
|
|
NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
|
|
*tl++ = newnfs_false;
|
|
if (eofflag)
|
|
*tl = newnfs_true;
|
|
else
|
|
*tl = newnfs_false;
|
|
free(rbuf, M_TEMP);
|
|
free(cookies, M_TEMP);
|
|
|
|
out:
|
|
NFSEXITCODE2(0, nd);
|
|
return (0);
|
|
nfsmout:
|
|
vput(vp);
|
|
NFSEXITCODE2(error, nd);
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* Readdirplus for V3 and Readdir for V4.
|
|
*/
|
|
int
|
|
nfsrvd_readdirplus(struct nfsrv_descript *nd, int isdgram,
|
|
struct vnode *vp, struct thread *p, struct nfsexstuff *exp)
|
|
{
|
|
struct dirent *dp;
|
|
u_int32_t *tl;
|
|
int dirlen;
|
|
char *cpos, *cend, *rbuf;
|
|
struct vnode *nvp;
|
|
fhandle_t nfh;
|
|
struct nfsvattr nva, at, *nvap = &nva;
|
|
struct mbuf *mb0, *mb1;
|
|
struct nfsreferral *refp;
|
|
int nlen, r, error = 0, getret = 1, usevget = 1;
|
|
int siz, cnt, fullsiz, eofflag, ncookies, entrycnt;
|
|
caddr_t bpos0, bpos1;
|
|
u_int64_t off, toff, verf;
|
|
u_long *cookies = NULL, *cookiep;
|
|
nfsattrbit_t attrbits, rderrbits, savbits;
|
|
struct uio io;
|
|
struct iovec iv;
|
|
struct componentname cn;
|
|
int at_root, is_ufs, is_zfs, needs_unbusy, supports_nfsv4acls;
|
|
struct mount *mp, *new_mp;
|
|
uint64_t mounted_on_fileno;
|
|
|
|
if (nd->nd_repstat) {
|
|
nfsrv_postopattr(nd, getret, &at);
|
|
goto out;
|
|
}
|
|
NFSM_DISSECT(tl, u_int32_t *, 6 * NFSX_UNSIGNED);
|
|
off = fxdr_hyper(tl);
|
|
toff = off;
|
|
tl += 2;
|
|
verf = fxdr_hyper(tl);
|
|
tl += 2;
|
|
siz = fxdr_unsigned(int, *tl++);
|
|
cnt = fxdr_unsigned(int, *tl);
|
|
|
|
/*
|
|
* Use the server's maximum data transfer size as the upper bound
|
|
* on reply datalen.
|
|
*/
|
|
if (cnt > NFS_SRVMAXDATA(nd) || cnt < 0)
|
|
cnt = NFS_SRVMAXDATA(nd);
|
|
|
|
/*
|
|
* siz is a "hint" of how much directory information (name, fileid,
|
|
* cookie) should be in the reply. At least one client "hints" 0,
|
|
* so I set it to cnt for that case. I also round it up to the
|
|
* next multiple of DIRBLKSIZ.
|
|
*/
|
|
if (siz <= 0)
|
|
siz = cnt;
|
|
siz = ((siz + DIRBLKSIZ - 1) & ~(DIRBLKSIZ - 1));
|
|
|
|
if (nd->nd_flag & ND_NFSV4) {
|
|
error = nfsrv_getattrbits(nd, &attrbits, NULL, NULL);
|
|
if (error)
|
|
goto nfsmout;
|
|
NFSSET_ATTRBIT(&savbits, &attrbits);
|
|
NFSCLRNOTFILLABLE_ATTRBIT(&attrbits);
|
|
NFSZERO_ATTRBIT(&rderrbits);
|
|
NFSSETBIT_ATTRBIT(&rderrbits, NFSATTRBIT_RDATTRERROR);
|
|
} else {
|
|
NFSZERO_ATTRBIT(&attrbits);
|
|
}
|
|
fullsiz = siz;
|
|
nd->nd_repstat = getret = nfsvno_getattr(vp, &at, nd, p, 1, NULL);
|
|
#if 0
|
|
if (!nd->nd_repstat) {
|
|
if (off && verf != at.na_filerev) {
|
|
/*
|
|
* va_filerev is not sufficient as a cookie verifier,
|
|
* since it is not supposed to change when entries are
|
|
* removed/added unless that offset cookies returned to
|
|
* the client are no longer valid.
|
|
*/
|
|
if (nd->nd_flag & ND_NFSV4) {
|
|
nd->nd_repstat = NFSERR_NOTSAME;
|
|
} else {
|
|
nd->nd_repstat = NFSERR_BAD_COOKIE;
|
|
}
|
|
}
|
|
}
|
|
#endif
|
|
if (!nd->nd_repstat && vp->v_type != VDIR)
|
|
nd->nd_repstat = NFSERR_NOTDIR;
|
|
if (!nd->nd_repstat && cnt == 0)
|
|
nd->nd_repstat = NFSERR_TOOSMALL;
|
|
if (!nd->nd_repstat)
|
|
nd->nd_repstat = nfsvno_accchk(vp, VEXEC,
|
|
nd->nd_cred, exp, p, NFSACCCHK_NOOVERRIDE,
|
|
NFSACCCHK_VPISLOCKED, NULL);
|
|
if (nd->nd_repstat) {
|
|
vput(vp);
|
|
if (nd->nd_flag & ND_NFSV3)
|
|
nfsrv_postopattr(nd, getret, &at);
|
|
goto out;
|
|
}
|
|
is_ufs = strcmp(vp->v_mount->mnt_vfc->vfc_name, "ufs") == 0;
|
|
is_zfs = strcmp(vp->v_mount->mnt_vfc->vfc_name, "zfs") == 0;
|
|
|
|
rbuf = malloc(siz, M_TEMP, M_WAITOK);
|
|
again:
|
|
eofflag = 0;
|
|
if (cookies) {
|
|
free(cookies, M_TEMP);
|
|
cookies = NULL;
|
|
}
|
|
|
|
iv.iov_base = rbuf;
|
|
iv.iov_len = siz;
|
|
io.uio_iov = &iv;
|
|
io.uio_iovcnt = 1;
|
|
io.uio_offset = (off_t)off;
|
|
io.uio_resid = siz;
|
|
io.uio_segflg = UIO_SYSSPACE;
|
|
io.uio_rw = UIO_READ;
|
|
io.uio_td = NULL;
|
|
nd->nd_repstat = VOP_READDIR(vp, &io, nd->nd_cred, &eofflag, &ncookies,
|
|
&cookies);
|
|
off = (u_int64_t)io.uio_offset;
|
|
if (io.uio_resid)
|
|
siz -= io.uio_resid;
|
|
|
|
getret = nfsvno_getattr(vp, &at, nd, p, 1, NULL);
|
|
|
|
if (!cookies && !nd->nd_repstat)
|
|
nd->nd_repstat = NFSERR_PERM;
|
|
if (!nd->nd_repstat)
|
|
nd->nd_repstat = getret;
|
|
if (nd->nd_repstat) {
|
|
vput(vp);
|
|
if (cookies)
|
|
free(cookies, M_TEMP);
|
|
free(rbuf, M_TEMP);
|
|
if (nd->nd_flag & ND_NFSV3)
|
|
nfsrv_postopattr(nd, getret, &at);
|
|
goto out;
|
|
}
|
|
/*
|
|
* If nothing read, return eof
|
|
* rpc reply
|
|
*/
|
|
if (siz == 0) {
|
|
vput(vp);
|
|
if (nd->nd_flag & ND_NFSV3)
|
|
nfsrv_postopattr(nd, getret, &at);
|
|
NFSM_BUILD(tl, u_int32_t *, 4 * NFSX_UNSIGNED);
|
|
txdr_hyper(at.na_filerev, tl);
|
|
tl += 2;
|
|
*tl++ = newnfs_false;
|
|
*tl = newnfs_true;
|
|
free(cookies, M_TEMP);
|
|
free(rbuf, M_TEMP);
|
|
goto out;
|
|
}
|
|
|
|
/*
|
|
* Check for degenerate cases of nothing useful read.
|
|
* If so go try again
|
|
*/
|
|
cpos = rbuf;
|
|
cend = rbuf + siz;
|
|
dp = (struct dirent *)cpos;
|
|
cookiep = cookies;
|
|
|
|
/*
|
|
* 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 precede the requested offset. This
|
|
* requires the assumption that file offset cookies monotonically
|
|
* increase.
|
|
*/
|
|
while (cpos < cend && ncookies > 0 &&
|
|
(dp->d_fileno == 0 || dp->d_type == DT_WHT ||
|
|
(is_ufs == 1 && ((u_quad_t)(*cookiep)) <= toff) ||
|
|
((nd->nd_flag & ND_NFSV4) &&
|
|
((dp->d_namlen == 1 && dp->d_name[0] == '.') ||
|
|
(dp->d_namlen==2 && dp->d_name[0]=='.' && dp->d_name[1]=='.'))))) {
|
|
cpos += dp->d_reclen;
|
|
dp = (struct dirent *)cpos;
|
|
cookiep++;
|
|
ncookies--;
|
|
}
|
|
if (cpos >= cend || ncookies == 0) {
|
|
siz = fullsiz;
|
|
toff = off;
|
|
goto again;
|
|
}
|
|
|
|
/*
|
|
* Busy the file system so that the mount point won't go away
|
|
* and, as such, VFS_VGET() can be used safely.
|
|
*/
|
|
mp = vp->v_mount;
|
|
vfs_ref(mp);
|
|
NFSVOPUNLOCK(vp, 0);
|
|
nd->nd_repstat = vfs_busy(mp, 0);
|
|
vfs_rel(mp);
|
|
if (nd->nd_repstat != 0) {
|
|
vrele(vp);
|
|
free(cookies, M_TEMP);
|
|
free(rbuf, M_TEMP);
|
|
if (nd->nd_flag & ND_NFSV3)
|
|
nfsrv_postopattr(nd, getret, &at);
|
|
goto out;
|
|
}
|
|
|
|
/*
|
|
* Check to see if entries in this directory can be safely acquired
|
|
* via VFS_VGET() or if a switch to VOP_LOOKUP() is required.
|
|
* ZFS snapshot directories need VOP_LOOKUP(), so that any
|
|
* automount of the snapshot directory that is required will
|
|
* be done.
|
|
* This needs to be done here for NFSv4, since NFSv4 never does
|
|
* a VFS_VGET() for "." or "..".
|
|
*/
|
|
if (is_zfs == 1) {
|
|
r = VFS_VGET(mp, at.na_fileid, LK_SHARED, &nvp);
|
|
if (r == EOPNOTSUPP) {
|
|
usevget = 0;
|
|
cn.cn_nameiop = LOOKUP;
|
|
cn.cn_lkflags = LK_SHARED | LK_RETRY;
|
|
cn.cn_cred = nd->nd_cred;
|
|
cn.cn_thread = p;
|
|
} else if (r == 0)
|
|
vput(nvp);
|
|
}
|
|
|
|
/*
|
|
* Save this position, in case there is an error before one entry
|
|
* is created.
|
|
*/
|
|
mb0 = nd->nd_mb;
|
|
bpos0 = nd->nd_bpos;
|
|
|
|
/*
|
|
* Fill in the first part of the reply.
|
|
* dirlen is the reply length in bytes and cannot exceed cnt.
|
|
* (Include the two booleans at the end of the reply in dirlen now,
|
|
* so we recognize when we have exceeded cnt.)
|
|
*/
|
|
if (nd->nd_flag & ND_NFSV3) {
|
|
dirlen = NFSX_V3POSTOPATTR + NFSX_VERF + 2 * NFSX_UNSIGNED;
|
|
nfsrv_postopattr(nd, getret, &at);
|
|
} else {
|
|
dirlen = NFSX_VERF + 2 * NFSX_UNSIGNED;
|
|
}
|
|
NFSM_BUILD(tl, u_int32_t *, NFSX_VERF);
|
|
txdr_hyper(at.na_filerev, tl);
|
|
|
|
/*
|
|
* Save this position, in case there is an empty reply needed.
|
|
*/
|
|
mb1 = nd->nd_mb;
|
|
bpos1 = nd->nd_bpos;
|
|
|
|
/* Loop through the records and build reply */
|
|
entrycnt = 0;
|
|
while (cpos < cend && ncookies > 0 && dirlen < cnt) {
|
|
nlen = dp->d_namlen;
|
|
if (dp->d_fileno != 0 && dp->d_type != DT_WHT &&
|
|
nlen <= NFS_MAXNAMLEN &&
|
|
((nd->nd_flag & ND_NFSV3) || nlen > 2 ||
|
|
(nlen==2 && (dp->d_name[0]!='.' || dp->d_name[1]!='.'))
|
|
|| (nlen == 1 && dp->d_name[0] != '.'))) {
|
|
/*
|
|
* Save the current position in the reply, in case
|
|
* this entry exceeds cnt.
|
|
*/
|
|
mb1 = nd->nd_mb;
|
|
bpos1 = nd->nd_bpos;
|
|
|
|
/*
|
|
* For readdir_and_lookup get the vnode using
|
|
* the file number.
|
|
*/
|
|
nvp = NULL;
|
|
refp = NULL;
|
|
r = 0;
|
|
at_root = 0;
|
|
needs_unbusy = 0;
|
|
new_mp = mp;
|
|
mounted_on_fileno = (uint64_t)dp->d_fileno;
|
|
if ((nd->nd_flag & ND_NFSV3) ||
|
|
NFSNONZERO_ATTRBIT(&savbits)) {
|
|
if (nd->nd_flag & ND_NFSV4)
|
|
refp = nfsv4root_getreferral(NULL,
|
|
vp, dp->d_fileno);
|
|
if (refp == NULL) {
|
|
if (usevget)
|
|
r = VFS_VGET(mp, dp->d_fileno,
|
|
LK_SHARED, &nvp);
|
|
else
|
|
r = EOPNOTSUPP;
|
|
if (r == EOPNOTSUPP) {
|
|
if (usevget) {
|
|
usevget = 0;
|
|
cn.cn_nameiop = LOOKUP;
|
|
cn.cn_lkflags =
|
|
LK_SHARED |
|
|
LK_RETRY;
|
|
cn.cn_cred =
|
|
nd->nd_cred;
|
|
cn.cn_thread = p;
|
|
}
|
|
cn.cn_nameptr = dp->d_name;
|
|
cn.cn_namelen = nlen;
|
|
cn.cn_flags = ISLASTCN |
|
|
NOFOLLOW | LOCKLEAF;
|
|
if (nlen == 2 &&
|
|
dp->d_name[0] == '.' &&
|
|
dp->d_name[1] == '.')
|
|
cn.cn_flags |=
|
|
ISDOTDOT;
|
|
if (NFSVOPLOCK(vp, LK_SHARED)
|
|
!= 0) {
|
|
nd->nd_repstat = EPERM;
|
|
break;
|
|
}
|
|
if ((vp->v_vflag & VV_ROOT) != 0
|
|
&& (cn.cn_flags & ISDOTDOT)
|
|
!= 0) {
|
|
vref(vp);
|
|
nvp = vp;
|
|
r = 0;
|
|
} else {
|
|
r = VOP_LOOKUP(vp, &nvp,
|
|
&cn);
|
|
if (vp != nvp)
|
|
NFSVOPUNLOCK(vp,
|
|
0);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* For NFSv4, check to see if nvp is
|
|
* a mount point and get the mount
|
|
* point vnode, as required.
|
|
*/
|
|
if (r == 0 &&
|
|
nfsrv_enable_crossmntpt != 0 &&
|
|
(nd->nd_flag & ND_NFSV4) != 0 &&
|
|
nvp->v_type == VDIR &&
|
|
nvp->v_mountedhere != NULL) {
|
|
new_mp = nvp->v_mountedhere;
|
|
r = vfs_busy(new_mp, 0);
|
|
vput(nvp);
|
|
nvp = NULL;
|
|
if (r == 0) {
|
|
r = VFS_ROOT(new_mp,
|
|
LK_SHARED, &nvp);
|
|
needs_unbusy = 1;
|
|
if (r == 0)
|
|
at_root = 1;
|
|
}
|
|
}
|
|
}
|
|
if (!r) {
|
|
if (refp == NULL &&
|
|
((nd->nd_flag & ND_NFSV3) ||
|
|
NFSNONZERO_ATTRBIT(&attrbits))) {
|
|
r = nfsvno_getfh(nvp, &nfh, p);
|
|
if (!r)
|
|
r = nfsvno_getattr(nvp, nvap, nd, p,
|
|
1, &attrbits);
|
|
if (r == 0 && is_zfs == 1 &&
|
|
nfsrv_enable_crossmntpt != 0 &&
|
|
(nd->nd_flag & ND_NFSV4) != 0 &&
|
|
nvp->v_type == VDIR &&
|
|
vp->v_mount != nvp->v_mount) {
|
|
/*
|
|
* For a ZFS snapshot, there is a
|
|
* pseudo mount that does not set
|
|
* v_mountedhere, so it needs to
|
|
* be detected via a different
|
|
* mount structure.
|
|
*/
|
|
at_root = 1;
|
|
if (new_mp == mp)
|
|
new_mp = nvp->v_mount;
|
|
}
|
|
}
|
|
} else {
|
|
nvp = NULL;
|
|
}
|
|
if (r) {
|
|
if (!NFSISSET_ATTRBIT(&attrbits,
|
|
NFSATTRBIT_RDATTRERROR)) {
|
|
if (nvp != NULL)
|
|
vput(nvp);
|
|
if (needs_unbusy != 0)
|
|
vfs_unbusy(new_mp);
|
|
nd->nd_repstat = r;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Build the directory record xdr
|
|
*/
|
|
if (nd->nd_flag & ND_NFSV3) {
|
|
NFSM_BUILD(tl, u_int32_t *, 3 * NFSX_UNSIGNED);
|
|
*tl++ = newnfs_true;
|
|
*tl++ = 0;
|
|
*tl = txdr_unsigned(dp->d_fileno);
|
|
dirlen += nfsm_strtom(nd, dp->d_name, nlen);
|
|
NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
|
|
*tl++ = 0;
|
|
*tl = txdr_unsigned(*cookiep);
|
|
nfsrv_postopattr(nd, 0, nvap);
|
|
dirlen += nfsm_fhtom(nd,(u_int8_t *)&nfh,0,1);
|
|
dirlen += (5*NFSX_UNSIGNED+NFSX_V3POSTOPATTR);
|
|
if (nvp != NULL)
|
|
vput(nvp);
|
|
} else {
|
|
NFSM_BUILD(tl, u_int32_t *, 3 * NFSX_UNSIGNED);
|
|
*tl++ = newnfs_true;
|
|
*tl++ = 0;
|
|
*tl = txdr_unsigned(*cookiep);
|
|
dirlen += nfsm_strtom(nd, dp->d_name, nlen);
|
|
if (nvp != NULL) {
|
|
supports_nfsv4acls =
|
|
nfs_supportsnfsv4acls(nvp);
|
|
NFSVOPUNLOCK(nvp, 0);
|
|
} else
|
|
supports_nfsv4acls = 0;
|
|
if (refp != NULL) {
|
|
dirlen += nfsrv_putreferralattr(nd,
|
|
&savbits, refp, 0,
|
|
&nd->nd_repstat);
|
|
if (nd->nd_repstat) {
|
|
if (nvp != NULL)
|
|
vrele(nvp);
|
|
if (needs_unbusy != 0)
|
|
vfs_unbusy(new_mp);
|
|
break;
|
|
}
|
|
} else if (r) {
|
|
dirlen += nfsvno_fillattr(nd, new_mp,
|
|
nvp, nvap, &nfh, r, &rderrbits,
|
|
nd->nd_cred, p, isdgram, 0,
|
|
supports_nfsv4acls, at_root,
|
|
mounted_on_fileno);
|
|
} else {
|
|
dirlen += nfsvno_fillattr(nd, new_mp,
|
|
nvp, nvap, &nfh, r, &attrbits,
|
|
nd->nd_cred, p, isdgram, 0,
|
|
supports_nfsv4acls, at_root,
|
|
mounted_on_fileno);
|
|
}
|
|
if (nvp != NULL)
|
|
vrele(nvp);
|
|
dirlen += (3 * NFSX_UNSIGNED);
|
|
}
|
|
if (needs_unbusy != 0)
|
|
vfs_unbusy(new_mp);
|
|
if (dirlen <= cnt)
|
|
entrycnt++;
|
|
}
|
|
cpos += dp->d_reclen;
|
|
dp = (struct dirent *)cpos;
|
|
cookiep++;
|
|
ncookies--;
|
|
}
|
|
vrele(vp);
|
|
vfs_unbusy(mp);
|
|
|
|
/*
|
|
* If dirlen > cnt, we must strip off the last entry. If that
|
|
* results in an empty reply, report NFSERR_TOOSMALL.
|
|
*/
|
|
if (dirlen > cnt || nd->nd_repstat) {
|
|
if (!nd->nd_repstat && entrycnt == 0)
|
|
nd->nd_repstat = NFSERR_TOOSMALL;
|
|
if (nd->nd_repstat) {
|
|
newnfs_trimtrailing(nd, mb0, bpos0);
|
|
if (nd->nd_flag & ND_NFSV3)
|
|
nfsrv_postopattr(nd, getret, &at);
|
|
} else
|
|
newnfs_trimtrailing(nd, mb1, bpos1);
|
|
eofflag = 0;
|
|
} else if (cpos < cend)
|
|
eofflag = 0;
|
|
if (!nd->nd_repstat) {
|
|
NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
|
|
*tl++ = newnfs_false;
|
|
if (eofflag)
|
|
*tl = newnfs_true;
|
|
else
|
|
*tl = newnfs_false;
|
|
}
|
|
free(cookies, M_TEMP);
|
|
free(rbuf, M_TEMP);
|
|
|
|
out:
|
|
NFSEXITCODE2(0, nd);
|
|
return (0);
|
|
nfsmout:
|
|
vput(vp);
|
|
NFSEXITCODE2(error, nd);
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* Get the settable attributes out of the mbuf list.
|
|
* (Return 0 or EBADRPC)
|
|
*/
|
|
int
|
|
nfsrv_sattr(struct nfsrv_descript *nd, vnode_t vp, struct nfsvattr *nvap,
|
|
nfsattrbit_t *attrbitp, NFSACL_T *aclp, struct thread *p)
|
|
{
|
|
u_int32_t *tl;
|
|
struct nfsv2_sattr *sp;
|
|
int error = 0, toclient = 0;
|
|
|
|
switch (nd->nd_flag & (ND_NFSV2 | ND_NFSV3 | ND_NFSV4)) {
|
|
case ND_NFSV2:
|
|
NFSM_DISSECT(sp, struct nfsv2_sattr *, NFSX_V2SATTR);
|
|
/*
|
|
* Some old clients didn't fill in the high order 16bits.
|
|
* --> check the low order 2 bytes for 0xffff
|
|
*/
|
|
if ((fxdr_unsigned(int, sp->sa_mode) & 0xffff) != 0xffff)
|
|
nvap->na_mode = nfstov_mode(sp->sa_mode);
|
|
if (sp->sa_uid != newnfs_xdrneg1)
|
|
nvap->na_uid = fxdr_unsigned(uid_t, sp->sa_uid);
|
|
if (sp->sa_gid != newnfs_xdrneg1)
|
|
nvap->na_gid = fxdr_unsigned(gid_t, sp->sa_gid);
|
|
if (sp->sa_size != newnfs_xdrneg1)
|
|
nvap->na_size = fxdr_unsigned(u_quad_t, sp->sa_size);
|
|
if (sp->sa_atime.nfsv2_sec != newnfs_xdrneg1) {
|
|
#ifdef notyet
|
|
fxdr_nfsv2time(&sp->sa_atime, &nvap->na_atime);
|
|
#else
|
|
nvap->na_atime.tv_sec =
|
|
fxdr_unsigned(u_int32_t,sp->sa_atime.nfsv2_sec);
|
|
nvap->na_atime.tv_nsec = 0;
|
|
#endif
|
|
}
|
|
if (sp->sa_mtime.nfsv2_sec != newnfs_xdrneg1)
|
|
fxdr_nfsv2time(&sp->sa_mtime, &nvap->na_mtime);
|
|
break;
|
|
case ND_NFSV3:
|
|
NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
|
|
if (*tl == newnfs_true) {
|
|
NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
|
|
nvap->na_mode = nfstov_mode(*tl);
|
|
}
|
|
NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
|
|
if (*tl == newnfs_true) {
|
|
NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
|
|
nvap->na_uid = fxdr_unsigned(uid_t, *tl);
|
|
}
|
|
NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
|
|
if (*tl == newnfs_true) {
|
|
NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
|
|
nvap->na_gid = fxdr_unsigned(gid_t, *tl);
|
|
}
|
|
NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
|
|
if (*tl == newnfs_true) {
|
|
NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
|
|
nvap->na_size = fxdr_hyper(tl);
|
|
}
|
|
NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
|
|
switch (fxdr_unsigned(int, *tl)) {
|
|
case NFSV3SATTRTIME_TOCLIENT:
|
|
NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
|
|
fxdr_nfsv3time(tl, &nvap->na_atime);
|
|
toclient = 1;
|
|
break;
|
|
case NFSV3SATTRTIME_TOSERVER:
|
|
vfs_timestamp(&nvap->na_atime);
|
|
nvap->na_vaflags |= VA_UTIMES_NULL;
|
|
break;
|
|
}
|
|
NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
|
|
switch (fxdr_unsigned(int, *tl)) {
|
|
case NFSV3SATTRTIME_TOCLIENT:
|
|
NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
|
|
fxdr_nfsv3time(tl, &nvap->na_mtime);
|
|
nvap->na_vaflags &= ~VA_UTIMES_NULL;
|
|
break;
|
|
case NFSV3SATTRTIME_TOSERVER:
|
|
vfs_timestamp(&nvap->na_mtime);
|
|
if (!toclient)
|
|
nvap->na_vaflags |= VA_UTIMES_NULL;
|
|
break;
|
|
}
|
|
break;
|
|
case ND_NFSV4:
|
|
error = nfsv4_sattr(nd, vp, nvap, attrbitp, aclp, p);
|
|
}
|
|
nfsmout:
|
|
NFSEXITCODE2(error, nd);
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* Handle the setable attributes for V4.
|
|
* Returns NFSERR_BADXDR if it can't be parsed, 0 otherwise.
|
|
*/
|
|
int
|
|
nfsv4_sattr(struct nfsrv_descript *nd, vnode_t vp, struct nfsvattr *nvap,
|
|
nfsattrbit_t *attrbitp, NFSACL_T *aclp, struct thread *p)
|
|
{
|
|
u_int32_t *tl;
|
|
int attrsum = 0;
|
|
int i, j;
|
|
int error, attrsize, bitpos, aclsize, aceerr, retnotsup = 0;
|
|
int toclient = 0;
|
|
u_char *cp, namestr[NFSV4_SMALLSTR + 1];
|
|
uid_t uid;
|
|
gid_t gid;
|
|
|
|
error = nfsrv_getattrbits(nd, attrbitp, NULL, &retnotsup);
|
|
if (error)
|
|
goto nfsmout;
|
|
NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
|
|
attrsize = fxdr_unsigned(int, *tl);
|
|
|
|
/*
|
|
* Loop around getting the setable attributes. If an unsupported
|
|
* one is found, set nd_repstat == NFSERR_ATTRNOTSUPP and return.
|
|
*/
|
|
if (retnotsup) {
|
|
nd->nd_repstat = NFSERR_ATTRNOTSUPP;
|
|
bitpos = NFSATTRBIT_MAX;
|
|
} else {
|
|
bitpos = 0;
|
|
}
|
|
for (; bitpos < NFSATTRBIT_MAX; bitpos++) {
|
|
if (attrsum > attrsize) {
|
|
error = NFSERR_BADXDR;
|
|
goto nfsmout;
|
|
}
|
|
if (NFSISSET_ATTRBIT(attrbitp, bitpos))
|
|
switch (bitpos) {
|
|
case NFSATTRBIT_SIZE:
|
|
NFSM_DISSECT(tl, u_int32_t *, NFSX_HYPER);
|
|
if (vp != NULL && vp->v_type != VREG) {
|
|
error = (vp->v_type == VDIR) ? NFSERR_ISDIR :
|
|
NFSERR_INVAL;
|
|
goto nfsmout;
|
|
}
|
|
nvap->na_size = fxdr_hyper(tl);
|
|
attrsum += NFSX_HYPER;
|
|
break;
|
|
case NFSATTRBIT_ACL:
|
|
error = nfsrv_dissectacl(nd, aclp, &aceerr, &aclsize,
|
|
p);
|
|
if (error)
|
|
goto nfsmout;
|
|
if (aceerr && !nd->nd_repstat)
|
|
nd->nd_repstat = aceerr;
|
|
attrsum += aclsize;
|
|
break;
|
|
case NFSATTRBIT_ARCHIVE:
|
|
NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
|
|
if (!nd->nd_repstat)
|
|
nd->nd_repstat = NFSERR_ATTRNOTSUPP;
|
|
attrsum += NFSX_UNSIGNED;
|
|
break;
|
|
case NFSATTRBIT_HIDDEN:
|
|
NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
|
|
if (!nd->nd_repstat)
|
|
nd->nd_repstat = NFSERR_ATTRNOTSUPP;
|
|
attrsum += NFSX_UNSIGNED;
|
|
break;
|
|
case NFSATTRBIT_MIMETYPE:
|
|
NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
|
|
i = fxdr_unsigned(int, *tl);
|
|
error = nfsm_advance(nd, NFSM_RNDUP(i), -1);
|
|
if (error)
|
|
goto nfsmout;
|
|
if (!nd->nd_repstat)
|
|
nd->nd_repstat = NFSERR_ATTRNOTSUPP;
|
|
attrsum += (NFSX_UNSIGNED + NFSM_RNDUP(i));
|
|
break;
|
|
case NFSATTRBIT_MODE:
|
|
NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
|
|
nvap->na_mode = nfstov_mode(*tl);
|
|
attrsum += NFSX_UNSIGNED;
|
|
break;
|
|
case NFSATTRBIT_OWNER:
|
|
NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
|
|
j = fxdr_unsigned(int, *tl);
|
|
if (j < 0) {
|
|
error = NFSERR_BADXDR;
|
|
goto nfsmout;
|
|
}
|
|
if (j > NFSV4_SMALLSTR)
|
|
cp = malloc(j + 1, M_NFSSTRING, M_WAITOK);
|
|
else
|
|
cp = namestr;
|
|
error = nfsrv_mtostr(nd, cp, j);
|
|
if (error) {
|
|
if (j > NFSV4_SMALLSTR)
|
|
free(cp, M_NFSSTRING);
|
|
goto nfsmout;
|
|
}
|
|
if (!nd->nd_repstat) {
|
|
nd->nd_repstat = nfsv4_strtouid(nd, cp, j, &uid,
|
|
p);
|
|
if (!nd->nd_repstat)
|
|
nvap->na_uid = uid;
|
|
}
|
|
if (j > NFSV4_SMALLSTR)
|
|
free(cp, M_NFSSTRING);
|
|
attrsum += (NFSX_UNSIGNED + NFSM_RNDUP(j));
|
|
break;
|
|
case NFSATTRBIT_OWNERGROUP:
|
|
NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
|
|
j = fxdr_unsigned(int, *tl);
|
|
if (j < 0) {
|
|
error = NFSERR_BADXDR;
|
|
goto nfsmout;
|
|
}
|
|
if (j > NFSV4_SMALLSTR)
|
|
cp = malloc(j + 1, M_NFSSTRING, M_WAITOK);
|
|
else
|
|
cp = namestr;
|
|
error = nfsrv_mtostr(nd, cp, j);
|
|
if (error) {
|
|
if (j > NFSV4_SMALLSTR)
|
|
free(cp, M_NFSSTRING);
|
|
goto nfsmout;
|
|
}
|
|
if (!nd->nd_repstat) {
|
|
nd->nd_repstat = nfsv4_strtogid(nd, cp, j, &gid,
|
|
p);
|
|
if (!nd->nd_repstat)
|
|
nvap->na_gid = gid;
|
|
}
|
|
if (j > NFSV4_SMALLSTR)
|
|
free(cp, M_NFSSTRING);
|
|
attrsum += (NFSX_UNSIGNED + NFSM_RNDUP(j));
|
|
break;
|
|
case NFSATTRBIT_SYSTEM:
|
|
NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
|
|
if (!nd->nd_repstat)
|
|
nd->nd_repstat = NFSERR_ATTRNOTSUPP;
|
|
attrsum += NFSX_UNSIGNED;
|
|
break;
|
|
case NFSATTRBIT_TIMEACCESSSET:
|
|
NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
|
|
attrsum += NFSX_UNSIGNED;
|
|
if (fxdr_unsigned(int, *tl)==NFSV4SATTRTIME_TOCLIENT) {
|
|
NFSM_DISSECT(tl, u_int32_t *, NFSX_V4TIME);
|
|
fxdr_nfsv4time(tl, &nvap->na_atime);
|
|
toclient = 1;
|
|
attrsum += NFSX_V4TIME;
|
|
} else {
|
|
vfs_timestamp(&nvap->na_atime);
|
|
nvap->na_vaflags |= VA_UTIMES_NULL;
|
|
}
|
|
break;
|
|
case NFSATTRBIT_TIMEBACKUP:
|
|
NFSM_DISSECT(tl, u_int32_t *, NFSX_V4TIME);
|
|
if (!nd->nd_repstat)
|
|
nd->nd_repstat = NFSERR_ATTRNOTSUPP;
|
|
attrsum += NFSX_V4TIME;
|
|
break;
|
|
case NFSATTRBIT_TIMECREATE:
|
|
NFSM_DISSECT(tl, u_int32_t *, NFSX_V4TIME);
|
|
if (!nd->nd_repstat)
|
|
nd->nd_repstat = NFSERR_ATTRNOTSUPP;
|
|
attrsum += NFSX_V4TIME;
|
|
break;
|
|
case NFSATTRBIT_TIMEMODIFYSET:
|
|
NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
|
|
attrsum += NFSX_UNSIGNED;
|
|
if (fxdr_unsigned(int, *tl)==NFSV4SATTRTIME_TOCLIENT) {
|
|
NFSM_DISSECT(tl, u_int32_t *, NFSX_V4TIME);
|
|
fxdr_nfsv4time(tl, &nvap->na_mtime);
|
|
nvap->na_vaflags &= ~VA_UTIMES_NULL;
|
|
attrsum += NFSX_V4TIME;
|
|
} else {
|
|
vfs_timestamp(&nvap->na_mtime);
|
|
if (!toclient)
|
|
nvap->na_vaflags |= VA_UTIMES_NULL;
|
|
}
|
|
break;
|
|
default:
|
|
nd->nd_repstat = NFSERR_ATTRNOTSUPP;
|
|
/*
|
|
* set bitpos so we drop out of the loop.
|
|
*/
|
|
bitpos = NFSATTRBIT_MAX;
|
|
break;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* some clients pad the attrlist, so we need to skip over the
|
|
* padding.
|
|
*/
|
|
if (attrsum > attrsize) {
|
|
error = NFSERR_BADXDR;
|
|
} else {
|
|
attrsize = NFSM_RNDUP(attrsize);
|
|
if (attrsum < attrsize)
|
|
error = nfsm_advance(nd, attrsize - attrsum, -1);
|
|
}
|
|
nfsmout:
|
|
NFSEXITCODE2(error, nd);
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* Check/setup export credentials.
|
|
*/
|
|
int
|
|
nfsd_excred(struct nfsrv_descript *nd, struct nfsexstuff *exp,
|
|
struct ucred *credanon)
|
|
{
|
|
int error = 0;
|
|
|
|
/*
|
|
* Check/setup credentials.
|
|
*/
|
|
if (nd->nd_flag & ND_GSS)
|
|
exp->nes_exflag &= ~MNT_EXPORTANON;
|
|
|
|
/*
|
|
* Check to see if the operation is allowed for this security flavor.
|
|
* RFC2623 suggests that the NFSv3 Fsinfo RPC be allowed to
|
|
* AUTH_NONE or AUTH_SYS for file systems requiring RPCSEC_GSS.
|
|
* Also, allow Secinfo, so that it can acquire the correct flavor(s).
|
|
*/
|
|
if (nfsvno_testexp(nd, exp) &&
|
|
nd->nd_procnum != NFSV4OP_SECINFO &&
|
|
nd->nd_procnum != NFSPROC_FSINFO) {
|
|
if (nd->nd_flag & ND_NFSV4)
|
|
error = NFSERR_WRONGSEC;
|
|
else
|
|
error = (NFSERR_AUTHERR | AUTH_TOOWEAK);
|
|
goto out;
|
|
}
|
|
|
|
/*
|
|
* Check to see if the file system is exported V4 only.
|
|
*/
|
|
if (NFSVNO_EXV4ONLY(exp) && !(nd->nd_flag & ND_NFSV4)) {
|
|
error = NFSERR_PROGNOTV4;
|
|
goto out;
|
|
}
|
|
|
|
/*
|
|
* Now, map the user credentials.
|
|
* (Note that ND_AUTHNONE will only be set for an NFSv3
|
|
* Fsinfo RPC. If set for anything else, this code might need
|
|
* to change.)
|
|
*/
|
|
if (NFSVNO_EXPORTED(exp)) {
|
|
if (((nd->nd_flag & ND_GSS) == 0 && nd->nd_cred->cr_uid == 0) ||
|
|
NFSVNO_EXPORTANON(exp) ||
|
|
(nd->nd_flag & ND_AUTHNONE) != 0) {
|
|
nd->nd_cred->cr_uid = credanon->cr_uid;
|
|
nd->nd_cred->cr_gid = credanon->cr_gid;
|
|
crsetgroups(nd->nd_cred, credanon->cr_ngroups,
|
|
credanon->cr_groups);
|
|
} else if ((nd->nd_flag & ND_GSS) == 0) {
|
|
/*
|
|
* If using AUTH_SYS, call nfsrv_getgrpscred() to see
|
|
* if there is a replacement credential with a group
|
|
* list set up by "nfsuserd -manage-gids".
|
|
* If there is no replacement, nfsrv_getgrpscred()
|
|
* simply returns its argument.
|
|
*/
|
|
nd->nd_cred = nfsrv_getgrpscred(nd->nd_cred);
|
|
}
|
|
}
|
|
|
|
out:
|
|
NFSEXITCODE2(error, nd);
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* Check exports.
|
|
*/
|
|
int
|
|
nfsvno_checkexp(struct mount *mp, struct sockaddr *nam, struct nfsexstuff *exp,
|
|
struct ucred **credp)
|
|
{
|
|
int i, error, *secflavors;
|
|
|
|
error = VFS_CHECKEXP(mp, nam, &exp->nes_exflag, credp,
|
|
&exp->nes_numsecflavor, &secflavors);
|
|
if (error) {
|
|
if (nfs_rootfhset) {
|
|
exp->nes_exflag = 0;
|
|
exp->nes_numsecflavor = 0;
|
|
error = 0;
|
|
}
|
|
} else {
|
|
/* Copy the security flavors. */
|
|
for (i = 0; i < exp->nes_numsecflavor; i++)
|
|
exp->nes_secflavors[i] = secflavors[i];
|
|
}
|
|
NFSEXITCODE(error);
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* Get a vnode for a file handle and export stuff.
|
|
*/
|
|
int
|
|
nfsvno_fhtovp(struct mount *mp, fhandle_t *fhp, struct sockaddr *nam,
|
|
int lktype, struct vnode **vpp, struct nfsexstuff *exp,
|
|
struct ucred **credp)
|
|
{
|
|
int i, error, *secflavors;
|
|
|
|
*credp = NULL;
|
|
exp->nes_numsecflavor = 0;
|
|
error = VFS_FHTOVP(mp, &fhp->fh_fid, lktype, vpp);
|
|
if (error != 0)
|
|
/* Make sure the server replies ESTALE to the client. */
|
|
error = ESTALE;
|
|
if (nam && !error) {
|
|
error = VFS_CHECKEXP(mp, nam, &exp->nes_exflag, credp,
|
|
&exp->nes_numsecflavor, &secflavors);
|
|
if (error) {
|
|
if (nfs_rootfhset) {
|
|
exp->nes_exflag = 0;
|
|
exp->nes_numsecflavor = 0;
|
|
error = 0;
|
|
} else {
|
|
vput(*vpp);
|
|
}
|
|
} else {
|
|
/* Copy the security flavors. */
|
|
for (i = 0; i < exp->nes_numsecflavor; i++)
|
|
exp->nes_secflavors[i] = secflavors[i];
|
|
}
|
|
}
|
|
NFSEXITCODE(error);
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* nfsd_fhtovp() - convert a fh to a vnode ptr
|
|
* - look up fsid in mount list (if not found ret error)
|
|
* - get vp and export rights by calling nfsvno_fhtovp()
|
|
* - if cred->cr_uid == 0 or MNT_EXPORTANON set it to credanon
|
|
* for AUTH_SYS
|
|
* - if mpp != NULL, return the mount point so that it can
|
|
* be used for vn_finished_write() by the caller
|
|
*/
|
|
void
|
|
nfsd_fhtovp(struct nfsrv_descript *nd, struct nfsrvfh *nfp, int lktype,
|
|
struct vnode **vpp, struct nfsexstuff *exp,
|
|
struct mount **mpp, int startwrite, struct thread *p)
|
|
{
|
|
struct mount *mp;
|
|
struct ucred *credanon;
|
|
fhandle_t *fhp;
|
|
|
|
fhp = (fhandle_t *)nfp->nfsrvfh_data;
|
|
/*
|
|
* Check for the special case of the nfsv4root_fh.
|
|
*/
|
|
mp = vfs_busyfs(&fhp->fh_fsid);
|
|
if (mpp != NULL)
|
|
*mpp = mp;
|
|
if (mp == NULL) {
|
|
*vpp = NULL;
|
|
nd->nd_repstat = ESTALE;
|
|
goto out;
|
|
}
|
|
|
|
if (startwrite) {
|
|
vn_start_write(NULL, mpp, V_WAIT);
|
|
if (lktype == LK_SHARED && !(MNT_SHARED_WRITES(mp)))
|
|
lktype = LK_EXCLUSIVE;
|
|
}
|
|
nd->nd_repstat = nfsvno_fhtovp(mp, fhp, nd->nd_nam, lktype, vpp, exp,
|
|
&credanon);
|
|
vfs_unbusy(mp);
|
|
|
|
/*
|
|
* For NFSv4 without a pseudo root fs, unexported file handles
|
|
* can be returned, so that Lookup works everywhere.
|
|
*/
|
|
if (!nd->nd_repstat && exp->nes_exflag == 0 &&
|
|
!(nd->nd_flag & ND_NFSV4)) {
|
|
vput(*vpp);
|
|
nd->nd_repstat = EACCES;
|
|
}
|
|
|
|
/*
|
|
* Personally, I've never seen any point in requiring a
|
|
* reserved port#, since only in the rare case where the
|
|
* clients are all boxes with secure system privileges,
|
|
* does it provide any enhanced security, but... some people
|
|
* believe it to be useful and keep putting this code back in.
|
|
* (There is also some "security checker" out there that
|
|
* complains if the nfs server doesn't enforce this.)
|
|
* However, note the following:
|
|
* RFC3530 (NFSv4) specifies that a reserved port# not be
|
|
* required.
|
|
* RFC2623 recommends that, if a reserved port# is checked for,
|
|
* that there be a way to turn that off--> ifdef'd.
|
|
*/
|
|
#ifdef NFS_REQRSVPORT
|
|
if (!nd->nd_repstat) {
|
|
struct sockaddr_in *saddr;
|
|
struct sockaddr_in6 *saddr6;
|
|
|
|
saddr = NFSSOCKADDR(nd->nd_nam, struct sockaddr_in *);
|
|
saddr6 = NFSSOCKADDR(nd->nd_nam, struct sockaddr_in6 *);
|
|
if (!(nd->nd_flag & ND_NFSV4) &&
|
|
((saddr->sin_family == AF_INET &&
|
|
ntohs(saddr->sin_port) >= IPPORT_RESERVED) ||
|
|
(saddr6->sin6_family == AF_INET6 &&
|
|
ntohs(saddr6->sin6_port) >= IPPORT_RESERVED))) {
|
|
vput(*vpp);
|
|
nd->nd_repstat = (NFSERR_AUTHERR | AUTH_TOOWEAK);
|
|
}
|
|
}
|
|
#endif /* NFS_REQRSVPORT */
|
|
|
|
/*
|
|
* Check/setup credentials.
|
|
*/
|
|
if (!nd->nd_repstat) {
|
|
nd->nd_saveduid = nd->nd_cred->cr_uid;
|
|
nd->nd_repstat = nfsd_excred(nd, exp, credanon);
|
|
if (nd->nd_repstat)
|
|
vput(*vpp);
|
|
}
|
|
if (credanon != NULL)
|
|
crfree(credanon);
|
|
if (nd->nd_repstat) {
|
|
if (startwrite)
|
|
vn_finished_write(mp);
|
|
*vpp = NULL;
|
|
if (mpp != NULL)
|
|
*mpp = NULL;
|
|
}
|
|
|
|
out:
|
|
NFSEXITCODE2(0, nd);
|
|
}
|
|
|
|
/*
|
|
* glue for fp.
|
|
*/
|
|
static int
|
|
fp_getfvp(struct thread *p, int fd, struct file **fpp, struct vnode **vpp)
|
|
{
|
|
struct filedesc *fdp;
|
|
struct file *fp;
|
|
int error = 0;
|
|
|
|
fdp = p->td_proc->p_fd;
|
|
if (fd < 0 || fd >= fdp->fd_nfiles ||
|
|
(fp = fdp->fd_ofiles[fd].fde_file) == NULL) {
|
|
error = EBADF;
|
|
goto out;
|
|
}
|
|
*fpp = fp;
|
|
|
|
out:
|
|
NFSEXITCODE(error);
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* Called from nfssvc() to update the exports list. Just call
|
|
* vfs_export(). This has to be done, since the v4 root fake fs isn't
|
|
* in the mount list.
|
|
*/
|
|
int
|
|
nfsrv_v4rootexport(void *argp, struct ucred *cred, struct thread *p)
|
|
{
|
|
struct nfsex_args *nfsexargp = (struct nfsex_args *)argp;
|
|
int error = 0;
|
|
struct nameidata nd;
|
|
fhandle_t fh;
|
|
|
|
error = vfs_export(&nfsv4root_mnt, &nfsexargp->export);
|
|
if ((nfsexargp->export.ex_flags & MNT_DELEXPORT) != 0)
|
|
nfs_rootfhset = 0;
|
|
else if (error == 0) {
|
|
if (nfsexargp->fspec == NULL) {
|
|
error = EPERM;
|
|
goto out;
|
|
}
|
|
/*
|
|
* If fspec != NULL, this is the v4root path.
|
|
*/
|
|
NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE,
|
|
nfsexargp->fspec, p);
|
|
if ((error = namei(&nd)) != 0)
|
|
goto out;
|
|
error = nfsvno_getfh(nd.ni_vp, &fh, p);
|
|
vrele(nd.ni_vp);
|
|
if (!error) {
|
|
nfs_rootfh.nfsrvfh_len = NFSX_MYFH;
|
|
NFSBCOPY((caddr_t)&fh,
|
|
nfs_rootfh.nfsrvfh_data,
|
|
sizeof (fhandle_t));
|
|
nfs_rootfhset = 1;
|
|
}
|
|
}
|
|
|
|
out:
|
|
NFSEXITCODE(error);
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* This function needs to test to see if the system is near its limit
|
|
* for memory allocation via malloc() or mget() and return True iff
|
|
* either of these resources are near their limit.
|
|
* XXX (For now, this is just a stub.)
|
|
*/
|
|
int nfsrv_testmalloclimit = 0;
|
|
int
|
|
nfsrv_mallocmget_limit(void)
|
|
{
|
|
static int printmesg = 0;
|
|
static int testval = 1;
|
|
|
|
if (nfsrv_testmalloclimit && (testval++ % 1000) == 0) {
|
|
if ((printmesg++ % 100) == 0)
|
|
printf("nfsd: malloc/mget near limit\n");
|
|
return (1);
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* BSD specific initialization of a mount point.
|
|
*/
|
|
void
|
|
nfsd_mntinit(void)
|
|
{
|
|
static int inited = 0;
|
|
|
|
if (inited)
|
|
return;
|
|
inited = 1;
|
|
nfsv4root_mnt.mnt_flag = (MNT_RDONLY | MNT_EXPORTED);
|
|
TAILQ_INIT(&nfsv4root_mnt.mnt_nvnodelist);
|
|
TAILQ_INIT(&nfsv4root_mnt.mnt_activevnodelist);
|
|
nfsv4root_mnt.mnt_export = NULL;
|
|
TAILQ_INIT(&nfsv4root_opt);
|
|
TAILQ_INIT(&nfsv4root_newopt);
|
|
nfsv4root_mnt.mnt_opt = &nfsv4root_opt;
|
|
nfsv4root_mnt.mnt_optnew = &nfsv4root_newopt;
|
|
nfsv4root_mnt.mnt_nvnodelistsize = 0;
|
|
nfsv4root_mnt.mnt_activevnodelistsize = 0;
|
|
}
|
|
|
|
/*
|
|
* Get a vnode for a file handle, without checking exports, etc.
|
|
*/
|
|
struct vnode *
|
|
nfsvno_getvp(fhandle_t *fhp)
|
|
{
|
|
struct mount *mp;
|
|
struct vnode *vp;
|
|
int error;
|
|
|
|
mp = vfs_busyfs(&fhp->fh_fsid);
|
|
if (mp == NULL)
|
|
return (NULL);
|
|
error = VFS_FHTOVP(mp, &fhp->fh_fid, LK_EXCLUSIVE, &vp);
|
|
vfs_unbusy(mp);
|
|
if (error)
|
|
return (NULL);
|
|
return (vp);
|
|
}
|
|
|
|
/*
|
|
* Do a local VOP_ADVLOCK().
|
|
*/
|
|
int
|
|
nfsvno_advlock(struct vnode *vp, int ftype, u_int64_t first,
|
|
u_int64_t end, struct thread *td)
|
|
{
|
|
int error = 0;
|
|
struct flock fl;
|
|
u_int64_t tlen;
|
|
|
|
if (nfsrv_dolocallocks == 0)
|
|
goto out;
|
|
ASSERT_VOP_UNLOCKED(vp, "nfsvno_advlock: vp locked");
|
|
|
|
fl.l_whence = SEEK_SET;
|
|
fl.l_type = ftype;
|
|
fl.l_start = (off_t)first;
|
|
if (end == NFS64BITSSET) {
|
|
fl.l_len = 0;
|
|
} else {
|
|
tlen = end - first;
|
|
fl.l_len = (off_t)tlen;
|
|
}
|
|
/*
|
|
* For FreeBSD8, the l_pid and l_sysid must be set to the same
|
|
* values for all calls, so that all locks will be held by the
|
|
* nfsd server. (The nfsd server handles conflicts between the
|
|
* various clients.)
|
|
* Since an NFSv4 lockowner is a ClientID plus an array of up to 1024
|
|
* bytes, so it can't be put in l_sysid.
|
|
*/
|
|
if (nfsv4_sysid == 0)
|
|
nfsv4_sysid = nlm_acquire_next_sysid();
|
|
fl.l_pid = (pid_t)0;
|
|
fl.l_sysid = (int)nfsv4_sysid;
|
|
|
|
if (ftype == F_UNLCK)
|
|
error = VOP_ADVLOCK(vp, (caddr_t)td->td_proc, F_UNLCK, &fl,
|
|
(F_POSIX | F_REMOTE));
|
|
else
|
|
error = VOP_ADVLOCK(vp, (caddr_t)td->td_proc, F_SETLK, &fl,
|
|
(F_POSIX | F_REMOTE));
|
|
|
|
out:
|
|
NFSEXITCODE(error);
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* Check the nfsv4 root exports.
|
|
*/
|
|
int
|
|
nfsvno_v4rootexport(struct nfsrv_descript *nd)
|
|
{
|
|
struct ucred *credanon;
|
|
int exflags, error = 0, numsecflavor, *secflavors, i;
|
|
|
|
error = vfs_stdcheckexp(&nfsv4root_mnt, nd->nd_nam, &exflags,
|
|
&credanon, &numsecflavor, &secflavors);
|
|
if (error) {
|
|
error = NFSERR_PROGUNAVAIL;
|
|
goto out;
|
|
}
|
|
if (credanon != NULL)
|
|
crfree(credanon);
|
|
for (i = 0; i < numsecflavor; i++) {
|
|
if (secflavors[i] == AUTH_SYS)
|
|
nd->nd_flag |= ND_EXAUTHSYS;
|
|
else if (secflavors[i] == RPCSEC_GSS_KRB5)
|
|
nd->nd_flag |= ND_EXGSS;
|
|
else if (secflavors[i] == RPCSEC_GSS_KRB5I)
|
|
nd->nd_flag |= ND_EXGSSINTEGRITY;
|
|
else if (secflavors[i] == RPCSEC_GSS_KRB5P)
|
|
nd->nd_flag |= ND_EXGSSPRIVACY;
|
|
}
|
|
|
|
out:
|
|
NFSEXITCODE(error);
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* Nfs server pseudo system call for the nfsd's
|
|
*/
|
|
/*
|
|
* MPSAFE
|
|
*/
|
|
static int
|
|
nfssvc_nfsd(struct thread *td, struct nfssvc_args *uap)
|
|
{
|
|
struct file *fp;
|
|
struct nfsd_addsock_args sockarg;
|
|
struct nfsd_nfsd_args nfsdarg;
|
|
struct nfsd_nfsd_oargs onfsdarg;
|
|
struct nfsd_pnfsd_args pnfsdarg;
|
|
struct vnode *vp, *nvp, *curdvp;
|
|
struct pnfsdsfile *pf;
|
|
struct nfsdevice *ds, *fds;
|
|
cap_rights_t rights;
|
|
int buflen, error, ret;
|
|
char *buf, *cp, *cp2, *cp3;
|
|
char fname[PNFS_FILENAME_LEN + 1];
|
|
|
|
if (uap->flag & NFSSVC_NFSDADDSOCK) {
|
|
error = copyin(uap->argp, (caddr_t)&sockarg, sizeof (sockarg));
|
|
if (error)
|
|
goto out;
|
|
/*
|
|
* Since we don't know what rights might be required,
|
|
* pretend that we need them all. It is better to be too
|
|
* careful than too reckless.
|
|
*/
|
|
error = fget(td, sockarg.sock,
|
|
cap_rights_init(&rights, CAP_SOCK_SERVER), &fp);
|
|
if (error != 0)
|
|
goto out;
|
|
if (fp->f_type != DTYPE_SOCKET) {
|
|
fdrop(fp, td);
|
|
error = EPERM;
|
|
goto out;
|
|
}
|
|
error = nfsrvd_addsock(fp);
|
|
fdrop(fp, td);
|
|
} else if (uap->flag & NFSSVC_NFSDNFSD) {
|
|
if (uap->argp == NULL) {
|
|
error = EINVAL;
|
|
goto out;
|
|
}
|
|
if ((uap->flag & NFSSVC_NEWSTRUCT) == 0) {
|
|
error = copyin(uap->argp, &onfsdarg, sizeof(onfsdarg));
|
|
if (error == 0) {
|
|
nfsdarg.principal = onfsdarg.principal;
|
|
nfsdarg.minthreads = onfsdarg.minthreads;
|
|
nfsdarg.maxthreads = onfsdarg.maxthreads;
|
|
nfsdarg.version = 1;
|
|
nfsdarg.addr = NULL;
|
|
nfsdarg.addrlen = 0;
|
|
nfsdarg.dnshost = NULL;
|
|
nfsdarg.dnshostlen = 0;
|
|
nfsdarg.dspath = NULL;
|
|
nfsdarg.dspathlen = 0;
|
|
nfsdarg.mdspath = NULL;
|
|
nfsdarg.mdspathlen = 0;
|
|
nfsdarg.mirrorcnt = 1;
|
|
}
|
|
} else
|
|
error = copyin(uap->argp, &nfsdarg, sizeof(nfsdarg));
|
|
if (error)
|
|
goto out;
|
|
if (nfsdarg.addrlen > 0 && nfsdarg.addrlen < 10000 &&
|
|
nfsdarg.dnshostlen > 0 && nfsdarg.dnshostlen < 10000 &&
|
|
nfsdarg.dspathlen > 0 && nfsdarg.dspathlen < 10000 &&
|
|
nfsdarg.mdspathlen > 0 && nfsdarg.mdspathlen < 10000 &&
|
|
nfsdarg.mirrorcnt >= 1 &&
|
|
nfsdarg.mirrorcnt <= NFSDEV_MAXMIRRORS &&
|
|
nfsdarg.addr != NULL && nfsdarg.dnshost != NULL &&
|
|
nfsdarg.dspath != NULL && nfsdarg.mdspath != NULL) {
|
|
NFSD_DEBUG(1, "addrlen=%d dspathlen=%d dnslen=%d"
|
|
" mdspathlen=%d mirrorcnt=%d\n", nfsdarg.addrlen,
|
|
nfsdarg.dspathlen, nfsdarg.dnshostlen,
|
|
nfsdarg.mdspathlen, nfsdarg.mirrorcnt);
|
|
cp = malloc(nfsdarg.addrlen + 1, M_TEMP, M_WAITOK);
|
|
error = copyin(nfsdarg.addr, cp, nfsdarg.addrlen);
|
|
if (error != 0) {
|
|
free(cp, M_TEMP);
|
|
goto out;
|
|
}
|
|
cp[nfsdarg.addrlen] = '\0'; /* Ensure nul term. */
|
|
nfsdarg.addr = cp;
|
|
cp = malloc(nfsdarg.dnshostlen + 1, M_TEMP, M_WAITOK);
|
|
error = copyin(nfsdarg.dnshost, cp, nfsdarg.dnshostlen);
|
|
if (error != 0) {
|
|
free(nfsdarg.addr, M_TEMP);
|
|
free(cp, M_TEMP);
|
|
goto out;
|
|
}
|
|
cp[nfsdarg.dnshostlen] = '\0'; /* Ensure nul term. */
|
|
nfsdarg.dnshost = cp;
|
|
cp = malloc(nfsdarg.dspathlen + 1, M_TEMP, M_WAITOK);
|
|
error = copyin(nfsdarg.dspath, cp, nfsdarg.dspathlen);
|
|
if (error != 0) {
|
|
free(nfsdarg.addr, M_TEMP);
|
|
free(nfsdarg.dnshost, M_TEMP);
|
|
free(cp, M_TEMP);
|
|
goto out;
|
|
}
|
|
cp[nfsdarg.dspathlen] = '\0'; /* Ensure nul term. */
|
|
nfsdarg.dspath = cp;
|
|
cp = malloc(nfsdarg.mdspathlen + 1, M_TEMP, M_WAITOK);
|
|
error = copyin(nfsdarg.mdspath, cp, nfsdarg.mdspathlen);
|
|
if (error != 0) {
|
|
free(nfsdarg.addr, M_TEMP);
|
|
free(nfsdarg.dnshost, M_TEMP);
|
|
free(nfsdarg.dspath, M_TEMP);
|
|
free(cp, M_TEMP);
|
|
goto out;
|
|
}
|
|
cp[nfsdarg.mdspathlen] = '\0'; /* Ensure nul term. */
|
|
nfsdarg.mdspath = cp;
|
|
} else {
|
|
nfsdarg.addr = NULL;
|
|
nfsdarg.addrlen = 0;
|
|
nfsdarg.dnshost = NULL;
|
|
nfsdarg.dnshostlen = 0;
|
|
nfsdarg.dspath = NULL;
|
|
nfsdarg.dspathlen = 0;
|
|
nfsdarg.mdspath = NULL;
|
|
nfsdarg.mdspathlen = 0;
|
|
nfsdarg.mirrorcnt = 1;
|
|
}
|
|
error = nfsrvd_nfsd(td, &nfsdarg);
|
|
free(nfsdarg.addr, M_TEMP);
|
|
free(nfsdarg.dnshost, M_TEMP);
|
|
free(nfsdarg.dspath, M_TEMP);
|
|
free(nfsdarg.mdspath, M_TEMP);
|
|
} else if (uap->flag & NFSSVC_PNFSDS) {
|
|
error = copyin(uap->argp, &pnfsdarg, sizeof(pnfsdarg));
|
|
if (error == 0 && (pnfsdarg.op == PNFSDOP_DELDSSERVER ||
|
|
pnfsdarg.op == PNFSDOP_FORCEDELDS)) {
|
|
cp = malloc(PATH_MAX + 1, M_TEMP, M_WAITOK);
|
|
error = copyinstr(pnfsdarg.dspath, cp, PATH_MAX + 1,
|
|
NULL);
|
|
if (error == 0)
|
|
error = nfsrv_deldsserver(pnfsdarg.op, cp, td);
|
|
free(cp, M_TEMP);
|
|
} else if (error == 0 && pnfsdarg.op == PNFSDOP_COPYMR) {
|
|
cp = malloc(PATH_MAX + 1, M_TEMP, M_WAITOK);
|
|
buflen = sizeof(*pf) * NFSDEV_MAXMIRRORS;
|
|
buf = malloc(buflen, M_TEMP, M_WAITOK);
|
|
error = copyinstr(pnfsdarg.mdspath, cp, PATH_MAX + 1,
|
|
NULL);
|
|
NFSD_DEBUG(4, "pnfsdcopymr cp mdspath=%d\n", error);
|
|
if (error == 0 && pnfsdarg.dspath != NULL) {
|
|
cp2 = malloc(PATH_MAX + 1, M_TEMP, M_WAITOK);
|
|
error = copyinstr(pnfsdarg.dspath, cp2,
|
|
PATH_MAX + 1, NULL);
|
|
NFSD_DEBUG(4, "pnfsdcopymr cp dspath=%d\n",
|
|
error);
|
|
} else
|
|
cp2 = NULL;
|
|
if (error == 0 && pnfsdarg.curdspath != NULL) {
|
|
cp3 = malloc(PATH_MAX + 1, M_TEMP, M_WAITOK);
|
|
error = copyinstr(pnfsdarg.curdspath, cp3,
|
|
PATH_MAX + 1, NULL);
|
|
NFSD_DEBUG(4, "pnfsdcopymr cp curdspath=%d\n",
|
|
error);
|
|
} else
|
|
cp3 = NULL;
|
|
curdvp = NULL;
|
|
fds = NULL;
|
|
if (error == 0)
|
|
error = nfsrv_mdscopymr(cp, cp2, cp3, buf,
|
|
&buflen, fname, td, &vp, &nvp, &pf, &ds,
|
|
&fds);
|
|
NFSD_DEBUG(4, "nfsrv_mdscopymr=%d\n", error);
|
|
if (error == 0) {
|
|
if (pf->dsf_dir >= nfsrv_dsdirsize) {
|
|
printf("copymr: dsdir out of range\n");
|
|
pf->dsf_dir = 0;
|
|
}
|
|
NFSD_DEBUG(4, "copymr: buflen=%d\n", buflen);
|
|
error = nfsrv_copymr(vp, nvp,
|
|
ds->nfsdev_dsdir[pf->dsf_dir], ds, pf,
|
|
(struct pnfsdsfile *)buf,
|
|
buflen / sizeof(*pf), td->td_ucred, td);
|
|
vput(vp);
|
|
vput(nvp);
|
|
if (fds != NULL && error == 0) {
|
|
curdvp = fds->nfsdev_dsdir[pf->dsf_dir];
|
|
ret = vn_lock(curdvp, LK_EXCLUSIVE);
|
|
if (ret == 0) {
|
|
nfsrv_dsremove(curdvp, fname,
|
|
td->td_ucred, td);
|
|
NFSVOPUNLOCK(curdvp, 0);
|
|
}
|
|
}
|
|
NFSD_DEBUG(4, "nfsrv_copymr=%d\n", error);
|
|
}
|
|
free(cp, M_TEMP);
|
|
free(cp2, M_TEMP);
|
|
free(cp3, M_TEMP);
|
|
free(buf, M_TEMP);
|
|
}
|
|
} else {
|
|
error = nfssvc_srvcall(td, uap, td->td_ucred);
|
|
}
|
|
|
|
out:
|
|
NFSEXITCODE(error);
|
|
return (error);
|
|
}
|
|
|
|
static int
|
|
nfssvc_srvcall(struct thread *p, struct nfssvc_args *uap, struct ucred *cred)
|
|
{
|
|
struct nfsex_args export;
|
|
struct file *fp = NULL;
|
|
int stablefd, len;
|
|
struct nfsd_clid adminrevoke;
|
|
struct nfsd_dumplist dumplist;
|
|
struct nfsd_dumpclients *dumpclients;
|
|
struct nfsd_dumplocklist dumplocklist;
|
|
struct nfsd_dumplocks *dumplocks;
|
|
struct nameidata nd;
|
|
vnode_t vp;
|
|
int error = EINVAL, igotlock;
|
|
struct proc *procp;
|
|
static int suspend_nfsd = 0;
|
|
|
|
if (uap->flag & NFSSVC_PUBLICFH) {
|
|
NFSBZERO((caddr_t)&nfs_pubfh.nfsrvfh_data,
|
|
sizeof (fhandle_t));
|
|
error = copyin(uap->argp,
|
|
&nfs_pubfh.nfsrvfh_data, sizeof (fhandle_t));
|
|
if (!error)
|
|
nfs_pubfhset = 1;
|
|
} else if (uap->flag & NFSSVC_V4ROOTEXPORT) {
|
|
error = copyin(uap->argp,(caddr_t)&export,
|
|
sizeof (struct nfsex_args));
|
|
if (!error)
|
|
error = nfsrv_v4rootexport(&export, cred, p);
|
|
} else if (uap->flag & NFSSVC_NOPUBLICFH) {
|
|
nfs_pubfhset = 0;
|
|
error = 0;
|
|
} else if (uap->flag & NFSSVC_STABLERESTART) {
|
|
error = copyin(uap->argp, (caddr_t)&stablefd,
|
|
sizeof (int));
|
|
if (!error)
|
|
error = fp_getfvp(p, stablefd, &fp, &vp);
|
|
if (!error && (NFSFPFLAG(fp) & (FREAD | FWRITE)) != (FREAD | FWRITE))
|
|
error = EBADF;
|
|
if (!error && newnfs_numnfsd != 0)
|
|
error = EPERM;
|
|
if (!error) {
|
|
nfsrv_stablefirst.nsf_fp = fp;
|
|
nfsrv_setupstable(p);
|
|
}
|
|
} else if (uap->flag & NFSSVC_ADMINREVOKE) {
|
|
error = copyin(uap->argp, (caddr_t)&adminrevoke,
|
|
sizeof (struct nfsd_clid));
|
|
if (!error)
|
|
error = nfsrv_adminrevoke(&adminrevoke, p);
|
|
} else if (uap->flag & NFSSVC_DUMPCLIENTS) {
|
|
error = copyin(uap->argp, (caddr_t)&dumplist,
|
|
sizeof (struct nfsd_dumplist));
|
|
if (!error && (dumplist.ndl_size < 1 ||
|
|
dumplist.ndl_size > NFSRV_MAXDUMPLIST))
|
|
error = EPERM;
|
|
if (!error) {
|
|
len = sizeof (struct nfsd_dumpclients) * dumplist.ndl_size;
|
|
dumpclients = (struct nfsd_dumpclients *)malloc(len,
|
|
M_TEMP, M_WAITOK);
|
|
nfsrv_dumpclients(dumpclients, dumplist.ndl_size);
|
|
error = copyout(dumpclients,
|
|
CAST_USER_ADDR_T(dumplist.ndl_list), len);
|
|
free(dumpclients, M_TEMP);
|
|
}
|
|
} else if (uap->flag & NFSSVC_DUMPLOCKS) {
|
|
error = copyin(uap->argp, (caddr_t)&dumplocklist,
|
|
sizeof (struct nfsd_dumplocklist));
|
|
if (!error && (dumplocklist.ndllck_size < 1 ||
|
|
dumplocklist.ndllck_size > NFSRV_MAXDUMPLIST))
|
|
error = EPERM;
|
|
if (!error)
|
|
error = nfsrv_lookupfilename(&nd,
|
|
dumplocklist.ndllck_fname, p);
|
|
if (!error) {
|
|
len = sizeof (struct nfsd_dumplocks) *
|
|
dumplocklist.ndllck_size;
|
|
dumplocks = (struct nfsd_dumplocks *)malloc(len,
|
|
M_TEMP, M_WAITOK);
|
|
nfsrv_dumplocks(nd.ni_vp, dumplocks,
|
|
dumplocklist.ndllck_size, p);
|
|
vput(nd.ni_vp);
|
|
error = copyout(dumplocks,
|
|
CAST_USER_ADDR_T(dumplocklist.ndllck_list), len);
|
|
free(dumplocks, M_TEMP);
|
|
}
|
|
} else if (uap->flag & NFSSVC_BACKUPSTABLE) {
|
|
procp = p->td_proc;
|
|
PROC_LOCK(procp);
|
|
nfsd_master_pid = procp->p_pid;
|
|
bcopy(procp->p_comm, nfsd_master_comm, MAXCOMLEN + 1);
|
|
nfsd_master_start = procp->p_stats->p_start;
|
|
nfsd_master_proc = procp;
|
|
PROC_UNLOCK(procp);
|
|
} else if ((uap->flag & NFSSVC_SUSPENDNFSD) != 0) {
|
|
NFSLOCKV4ROOTMUTEX();
|
|
if (suspend_nfsd == 0) {
|
|
/* Lock out all nfsd threads */
|
|
do {
|
|
igotlock = nfsv4_lock(&nfsd_suspend_lock, 1,
|
|
NULL, NFSV4ROOTLOCKMUTEXPTR, NULL);
|
|
} while (igotlock == 0 && suspend_nfsd == 0);
|
|
suspend_nfsd = 1;
|
|
}
|
|
NFSUNLOCKV4ROOTMUTEX();
|
|
error = 0;
|
|
} else if ((uap->flag & NFSSVC_RESUMENFSD) != 0) {
|
|
NFSLOCKV4ROOTMUTEX();
|
|
if (suspend_nfsd != 0) {
|
|
nfsv4_unlock(&nfsd_suspend_lock, 0);
|
|
suspend_nfsd = 0;
|
|
}
|
|
NFSUNLOCKV4ROOTMUTEX();
|
|
error = 0;
|
|
}
|
|
|
|
NFSEXITCODE(error);
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* Check exports.
|
|
* Returns 0 if ok, 1 otherwise.
|
|
*/
|
|
int
|
|
nfsvno_testexp(struct nfsrv_descript *nd, struct nfsexstuff *exp)
|
|
{
|
|
int i;
|
|
|
|
/*
|
|
* This seems odd, but allow the case where the security flavor
|
|
* list is empty. This happens when NFSv4 is traversing non-exported
|
|
* file systems. Exported file systems should always have a non-empty
|
|
* security flavor list.
|
|
*/
|
|
if (exp->nes_numsecflavor == 0)
|
|
return (0);
|
|
|
|
for (i = 0; i < exp->nes_numsecflavor; i++) {
|
|
/*
|
|
* The tests for privacy and integrity must be first,
|
|
* since ND_GSS is set for everything but AUTH_SYS.
|
|
*/
|
|
if (exp->nes_secflavors[i] == RPCSEC_GSS_KRB5P &&
|
|
(nd->nd_flag & ND_GSSPRIVACY))
|
|
return (0);
|
|
if (exp->nes_secflavors[i] == RPCSEC_GSS_KRB5I &&
|
|
(nd->nd_flag & ND_GSSINTEGRITY))
|
|
return (0);
|
|
if (exp->nes_secflavors[i] == RPCSEC_GSS_KRB5 &&
|
|
(nd->nd_flag & ND_GSS))
|
|
return (0);
|
|
if (exp->nes_secflavors[i] == AUTH_SYS &&
|
|
(nd->nd_flag & ND_GSS) == 0)
|
|
return (0);
|
|
}
|
|
return (1);
|
|
}
|
|
|
|
/*
|
|
* Calculate a hash value for the fid in a file handle.
|
|
*/
|
|
uint32_t
|
|
nfsrv_hashfh(fhandle_t *fhp)
|
|
{
|
|
uint32_t hashval;
|
|
|
|
hashval = hash32_buf(&fhp->fh_fid, sizeof(struct fid), 0);
|
|
return (hashval);
|
|
}
|
|
|
|
/*
|
|
* Calculate a hash value for the sessionid.
|
|
*/
|
|
uint32_t
|
|
nfsrv_hashsessionid(uint8_t *sessionid)
|
|
{
|
|
uint32_t hashval;
|
|
|
|
hashval = hash32_buf(sessionid, NFSX_V4SESSIONID, 0);
|
|
return (hashval);
|
|
}
|
|
|
|
/*
|
|
* Signal the userland master nfsd to backup the stable restart file.
|
|
*/
|
|
void
|
|
nfsrv_backupstable(void)
|
|
{
|
|
struct proc *procp;
|
|
|
|
if (nfsd_master_proc != NULL) {
|
|
procp = pfind(nfsd_master_pid);
|
|
/* Try to make sure it is the correct process. */
|
|
if (procp == nfsd_master_proc &&
|
|
procp->p_stats->p_start.tv_sec ==
|
|
nfsd_master_start.tv_sec &&
|
|
procp->p_stats->p_start.tv_usec ==
|
|
nfsd_master_start.tv_usec &&
|
|
strcmp(procp->p_comm, nfsd_master_comm) == 0)
|
|
kern_psignal(procp, SIGUSR2);
|
|
else
|
|
nfsd_master_proc = NULL;
|
|
|
|
if (procp != NULL)
|
|
PROC_UNLOCK(procp);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Create a DS data file for nfsrv_pnfscreate(). Called for each mirror.
|
|
* The arguments are in a structure, so that they can be passed through
|
|
* taskqueue for a kernel process to execute this function.
|
|
*/
|
|
struct nfsrvdscreate {
|
|
int done;
|
|
int inprog;
|
|
struct task tsk;
|
|
struct ucred *tcred;
|
|
struct vnode *dvp;
|
|
NFSPROC_T *p;
|
|
struct pnfsdsfile *pf;
|
|
int err;
|
|
fhandle_t fh;
|
|
struct vattr va;
|
|
struct vattr createva;
|
|
};
|
|
|
|
int
|
|
nfsrv_dscreate(struct vnode *dvp, struct vattr *vap, struct vattr *nvap,
|
|
fhandle_t *fhp, struct pnfsdsfile *pf, struct pnfsdsattr *dsa,
|
|
char *fnamep, struct ucred *tcred, NFSPROC_T *p, struct vnode **nvpp)
|
|
{
|
|
struct vnode *nvp;
|
|
struct nameidata named;
|
|
struct vattr va;
|
|
char *bufp;
|
|
u_long *hashp;
|
|
struct nfsnode *np;
|
|
struct nfsmount *nmp;
|
|
int error;
|
|
|
|
NFSNAMEICNDSET(&named.ni_cnd, tcred, CREATE,
|
|
LOCKPARENT | LOCKLEAF | SAVESTART | NOCACHE);
|
|
nfsvno_setpathbuf(&named, &bufp, &hashp);
|
|
named.ni_cnd.cn_lkflags = LK_EXCLUSIVE;
|
|
named.ni_cnd.cn_thread = p;
|
|
named.ni_cnd.cn_nameptr = bufp;
|
|
if (fnamep != NULL) {
|
|
strlcpy(bufp, fnamep, PNFS_FILENAME_LEN + 1);
|
|
named.ni_cnd.cn_namelen = strlen(bufp);
|
|
} else
|
|
named.ni_cnd.cn_namelen = nfsrv_putfhname(fhp, bufp);
|
|
NFSD_DEBUG(4, "nfsrv_dscreate: dvp=%p fname=%s\n", dvp, bufp);
|
|
|
|
/* Create the date file in the DS mount. */
|
|
error = NFSVOPLOCK(dvp, LK_EXCLUSIVE);
|
|
if (error == 0) {
|
|
error = VOP_CREATE(dvp, &nvp, &named.ni_cnd, vap);
|
|
NFSVOPUNLOCK(dvp, 0);
|
|
if (error == 0) {
|
|
/* Set the ownership of the file. */
|
|
error = VOP_SETATTR(nvp, nvap, tcred);
|
|
NFSD_DEBUG(4, "nfsrv_dscreate:"
|
|
" setattr-uid=%d\n", error);
|
|
if (error != 0)
|
|
vput(nvp);
|
|
}
|
|
if (error != 0)
|
|
printf("pNFS: pnfscreate failed=%d\n", error);
|
|
} else
|
|
printf("pNFS: pnfscreate vnlock=%d\n", error);
|
|
if (error == 0) {
|
|
np = VTONFS(nvp);
|
|
nmp = VFSTONFS(nvp->v_mount);
|
|
if (strcmp(nvp->v_mount->mnt_vfc->vfc_name, "nfs")
|
|
!= 0 || nmp->nm_nam->sa_len > sizeof(
|
|
struct sockaddr_in6) ||
|
|
np->n_fhp->nfh_len != NFSX_MYFH) {
|
|
printf("Bad DS file: fstype=%s salen=%d"
|
|
" fhlen=%d\n",
|
|
nvp->v_mount->mnt_vfc->vfc_name,
|
|
nmp->nm_nam->sa_len, np->n_fhp->nfh_len);
|
|
error = ENOENT;
|
|
}
|
|
|
|
/* Set extattrs for the DS on the MDS file. */
|
|
if (error == 0) {
|
|
if (dsa != NULL) {
|
|
error = VOP_GETATTR(nvp, &va, tcred);
|
|
if (error == 0) {
|
|
dsa->dsa_filerev = va.va_filerev;
|
|
dsa->dsa_size = va.va_size;
|
|
dsa->dsa_atime = va.va_atime;
|
|
dsa->dsa_mtime = va.va_mtime;
|
|
}
|
|
}
|
|
if (error == 0) {
|
|
NFSBCOPY(np->n_fhp->nfh_fh, &pf->dsf_fh,
|
|
NFSX_MYFH);
|
|
NFSBCOPY(nmp->nm_nam, &pf->dsf_sin,
|
|
nmp->nm_nam->sa_len);
|
|
NFSBCOPY(named.ni_cnd.cn_nameptr,
|
|
pf->dsf_filename,
|
|
sizeof(pf->dsf_filename));
|
|
}
|
|
} else
|
|
printf("pNFS: pnfscreate can't get DS"
|
|
" attr=%d\n", error);
|
|
if (nvpp != NULL && error == 0)
|
|
*nvpp = nvp;
|
|
else
|
|
vput(nvp);
|
|
}
|
|
nfsvno_relpathbuf(&named);
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* Start up the thread that will execute nfsrv_dscreate().
|
|
*/
|
|
static void
|
|
start_dscreate(void *arg, int pending)
|
|
{
|
|
struct nfsrvdscreate *dsc;
|
|
|
|
dsc = (struct nfsrvdscreate *)arg;
|
|
dsc->err = nfsrv_dscreate(dsc->dvp, &dsc->createva, &dsc->va, &dsc->fh,
|
|
dsc->pf, NULL, NULL, dsc->tcred, dsc->p, NULL);
|
|
dsc->done = 1;
|
|
NFSD_DEBUG(4, "start_dscreate: err=%d\n", dsc->err);
|
|
}
|
|
|
|
/*
|
|
* Create a pNFS data file on the Data Server(s).
|
|
*/
|
|
static void
|
|
nfsrv_pnfscreate(struct vnode *vp, struct vattr *vap, struct ucred *cred,
|
|
NFSPROC_T *p)
|
|
{
|
|
struct nfsrvdscreate *dsc, *tdsc;
|
|
struct nfsdevice *ds, *tds, *fds;
|
|
struct mount *mp;
|
|
struct pnfsdsfile *pf, *tpf;
|
|
struct pnfsdsattr dsattr;
|
|
struct vattr va;
|
|
struct vnode *dvp[NFSDEV_MAXMIRRORS];
|
|
struct nfsmount *nmp;
|
|
fhandle_t fh;
|
|
uid_t vauid;
|
|
gid_t vagid;
|
|
u_short vamode;
|
|
struct ucred *tcred;
|
|
int dsdir[NFSDEV_MAXMIRRORS], error, i, mirrorcnt, ret;
|
|
int failpos, timo;
|
|
|
|
/* Get a DS server directory in a round-robin order. */
|
|
mirrorcnt = 1;
|
|
mp = vp->v_mount;
|
|
ds = fds = NULL;
|
|
NFSDDSLOCK();
|
|
/*
|
|
* Search for the first entry that handles this MDS fs, but use the
|
|
* first entry for all MDS fs's otherwise.
|
|
*/
|
|
TAILQ_FOREACH(tds, &nfsrv_devidhead, nfsdev_list) {
|
|
if (tds->nfsdev_nmp != NULL) {
|
|
if (tds->nfsdev_mdsisset == 0 && ds == NULL)
|
|
ds = tds;
|
|
else if (tds->nfsdev_mdsisset != 0 &&
|
|
mp->mnt_stat.f_fsid.val[0] ==
|
|
tds->nfsdev_mdsfsid.val[0] &&
|
|
mp->mnt_stat.f_fsid.val[1] ==
|
|
tds->nfsdev_mdsfsid.val[1]) {
|
|
ds = fds = tds;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
if (ds == NULL) {
|
|
NFSDDSUNLOCK();
|
|
NFSD_DEBUG(4, "nfsrv_pnfscreate: no srv\n");
|
|
return;
|
|
}
|
|
i = dsdir[0] = ds->nfsdev_nextdir;
|
|
ds->nfsdev_nextdir = (ds->nfsdev_nextdir + 1) % nfsrv_dsdirsize;
|
|
dvp[0] = ds->nfsdev_dsdir[i];
|
|
tds = TAILQ_NEXT(ds, nfsdev_list);
|
|
if (nfsrv_maxpnfsmirror > 1 && tds != NULL) {
|
|
TAILQ_FOREACH_FROM(tds, &nfsrv_devidhead, nfsdev_list) {
|
|
if (tds->nfsdev_nmp != NULL &&
|
|
((tds->nfsdev_mdsisset == 0 && fds == NULL) ||
|
|
(tds->nfsdev_mdsisset != 0 && fds != NULL &&
|
|
mp->mnt_stat.f_fsid.val[0] ==
|
|
tds->nfsdev_mdsfsid.val[0] &&
|
|
mp->mnt_stat.f_fsid.val[1] ==
|
|
tds->nfsdev_mdsfsid.val[1]))) {
|
|
dsdir[mirrorcnt] = i;
|
|
dvp[mirrorcnt] = tds->nfsdev_dsdir[i];
|
|
mirrorcnt++;
|
|
if (mirrorcnt >= nfsrv_maxpnfsmirror)
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
/* Put at end of list to implement round-robin usage. */
|
|
TAILQ_REMOVE(&nfsrv_devidhead, ds, nfsdev_list);
|
|
TAILQ_INSERT_TAIL(&nfsrv_devidhead, ds, nfsdev_list);
|
|
NFSDDSUNLOCK();
|
|
dsc = NULL;
|
|
if (mirrorcnt > 1)
|
|
tdsc = dsc = malloc(sizeof(*dsc) * (mirrorcnt - 1), M_TEMP,
|
|
M_WAITOK | M_ZERO);
|
|
tpf = pf = malloc(sizeof(*pf) * nfsrv_maxpnfsmirror, M_TEMP, M_WAITOK |
|
|
M_ZERO);
|
|
|
|
error = nfsvno_getfh(vp, &fh, p);
|
|
if (error == 0)
|
|
error = VOP_GETATTR(vp, &va, cred);
|
|
if (error == 0) {
|
|
/* Set the attributes for "vp" to Setattr the DS vp. */
|
|
vauid = va.va_uid;
|
|
vagid = va.va_gid;
|
|
vamode = va.va_mode;
|
|
VATTR_NULL(&va);
|
|
va.va_uid = vauid;
|
|
va.va_gid = vagid;
|
|
va.va_mode = vamode;
|
|
va.va_size = 0;
|
|
} else
|
|
printf("pNFS: pnfscreate getfh+attr=%d\n", error);
|
|
|
|
NFSD_DEBUG(4, "nfsrv_pnfscreate: cruid=%d crgid=%d\n", cred->cr_uid,
|
|
cred->cr_gid);
|
|
/* Make data file name based on FH. */
|
|
tcred = newnfs_getcred();
|
|
|
|
/*
|
|
* Create the file on each DS mirror, using kernel process(es) for the
|
|
* additional mirrors.
|
|
*/
|
|
failpos = -1;
|
|
for (i = 0; i < mirrorcnt - 1 && error == 0; i++, tpf++, tdsc++) {
|
|
tpf->dsf_dir = dsdir[i];
|
|
tdsc->tcred = tcred;
|
|
tdsc->p = p;
|
|
tdsc->pf = tpf;
|
|
tdsc->createva = *vap;
|
|
NFSBCOPY(&fh, &tdsc->fh, sizeof(fh));
|
|
tdsc->va = va;
|
|
tdsc->dvp = dvp[i];
|
|
tdsc->done = 0;
|
|
tdsc->inprog = 0;
|
|
tdsc->err = 0;
|
|
ret = EIO;
|
|
if (nfs_pnfsiothreads != 0) {
|
|
ret = nfs_pnfsio(start_dscreate, tdsc);
|
|
NFSD_DEBUG(4, "nfsrv_pnfscreate: nfs_pnfsio=%d\n", ret);
|
|
}
|
|
if (ret != 0) {
|
|
ret = nfsrv_dscreate(dvp[i], vap, &va, &fh, tpf, NULL,
|
|
NULL, tcred, p, NULL);
|
|
if (ret != 0) {
|
|
KASSERT(error == 0, ("nfsrv_dscreate err=%d",
|
|
error));
|
|
if (failpos == -1 && nfsds_failerr(ret))
|
|
failpos = i;
|
|
else
|
|
error = ret;
|
|
}
|
|
}
|
|
}
|
|
if (error == 0) {
|
|
tpf->dsf_dir = dsdir[mirrorcnt - 1];
|
|
error = nfsrv_dscreate(dvp[mirrorcnt - 1], vap, &va, &fh, tpf,
|
|
&dsattr, NULL, tcred, p, NULL);
|
|
if (failpos == -1 && mirrorcnt > 1 && nfsds_failerr(error)) {
|
|
failpos = mirrorcnt - 1;
|
|
error = 0;
|
|
}
|
|
}
|
|
timo = hz / 50; /* Wait for 20msec. */
|
|
if (timo < 1)
|
|
timo = 1;
|
|
/* Wait for kernel task(s) to complete. */
|
|
for (tdsc = dsc, i = 0; i < mirrorcnt - 1; i++, tdsc++) {
|
|
while (tdsc->inprog != 0 && tdsc->done == 0)
|
|
tsleep(&tdsc->tsk, PVFS, "srvdcr", timo);
|
|
if (tdsc->err != 0) {
|
|
if (failpos == -1 && nfsds_failerr(tdsc->err))
|
|
failpos = i;
|
|
else if (error == 0)
|
|
error = tdsc->err;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* If failpos has been set, that mirror has failed, so it needs
|
|
* to be disabled.
|
|
*/
|
|
if (failpos >= 0) {
|
|
nmp = VFSTONFS(dvp[failpos]->v_mount);
|
|
NFSLOCKMNT(nmp);
|
|
if ((nmp->nm_privflag & (NFSMNTP_FORCEDISM |
|
|
NFSMNTP_CANCELRPCS)) == 0) {
|
|
nmp->nm_privflag |= NFSMNTP_CANCELRPCS;
|
|
NFSUNLOCKMNT(nmp);
|
|
ds = nfsrv_deldsnmp(PNFSDOP_DELDSSERVER, nmp, p);
|
|
NFSD_DEBUG(4, "dscreatfail fail=%d ds=%p\n", failpos,
|
|
ds);
|
|
if (ds != NULL)
|
|
nfsrv_killrpcs(nmp);
|
|
NFSLOCKMNT(nmp);
|
|
nmp->nm_privflag &= ~NFSMNTP_CANCELRPCS;
|
|
wakeup(nmp);
|
|
}
|
|
NFSUNLOCKMNT(nmp);
|
|
}
|
|
|
|
NFSFREECRED(tcred);
|
|
if (error == 0) {
|
|
ASSERT_VOP_ELOCKED(vp, "nfsrv_pnfscreate vp");
|
|
|
|
NFSD_DEBUG(4, "nfsrv_pnfscreate: mirrorcnt=%d maxmirror=%d\n",
|
|
mirrorcnt, nfsrv_maxpnfsmirror);
|
|
/*
|
|
* For all mirrors that couldn't be created, fill in the
|
|
* *pf structure, but with an IP address == 0.0.0.0.
|
|
*/
|
|
tpf = pf + mirrorcnt;
|
|
for (i = mirrorcnt; i < nfsrv_maxpnfsmirror; i++, tpf++) {
|
|
*tpf = *pf;
|
|
tpf->dsf_sin.sin_family = AF_INET;
|
|
tpf->dsf_sin.sin_len = sizeof(struct sockaddr_in);
|
|
tpf->dsf_sin.sin_addr.s_addr = 0;
|
|
tpf->dsf_sin.sin_port = 0;
|
|
}
|
|
|
|
error = vn_extattr_set(vp, IO_NODELOCKED,
|
|
EXTATTR_NAMESPACE_SYSTEM, "pnfsd.dsfile",
|
|
sizeof(*pf) * nfsrv_maxpnfsmirror, (char *)pf, p);
|
|
if (error == 0)
|
|
error = vn_extattr_set(vp, IO_NODELOCKED,
|
|
EXTATTR_NAMESPACE_SYSTEM, "pnfsd.dsattr",
|
|
sizeof(dsattr), (char *)&dsattr, p);
|
|
if (error != 0)
|
|
printf("pNFS: pnfscreate setextattr=%d\n",
|
|
error);
|
|
} else
|
|
printf("pNFS: pnfscreate=%d\n", error);
|
|
free(pf, M_TEMP);
|
|
free(dsc, M_TEMP);
|
|
}
|
|
|
|
/*
|
|
* Get the information needed to remove the pNFS Data Server file from the
|
|
* Metadata file. Upon success, ddvp is set non-NULL to the locked
|
|
* DS directory vnode. The caller must unlock *ddvp when done with it.
|
|
*/
|
|
static void
|
|
nfsrv_pnfsremovesetup(struct vnode *vp, NFSPROC_T *p, struct vnode **dvpp,
|
|
int *mirrorcntp, char *fname, fhandle_t *fhp)
|
|
{
|
|
struct vattr va;
|
|
struct ucred *tcred;
|
|
char *buf;
|
|
int buflen, error;
|
|
|
|
dvpp[0] = NULL;
|
|
/* If not an exported regular file or not a pNFS server, just return. */
|
|
if (vp->v_type != VREG || (vp->v_mount->mnt_flag & MNT_EXPORTED) == 0 ||
|
|
nfsrv_devidcnt == 0)
|
|
return;
|
|
|
|
/* Check to see if this is the last hard link. */
|
|
tcred = newnfs_getcred();
|
|
error = VOP_GETATTR(vp, &va, tcred);
|
|
NFSFREECRED(tcred);
|
|
if (error != 0) {
|
|
printf("pNFS: nfsrv_pnfsremovesetup getattr=%d\n", error);
|
|
return;
|
|
}
|
|
if (va.va_nlink > 1)
|
|
return;
|
|
|
|
error = nfsvno_getfh(vp, fhp, p);
|
|
if (error != 0) {
|
|
printf("pNFS: nfsrv_pnfsremovesetup getfh=%d\n", error);
|
|
return;
|
|
}
|
|
|
|
buflen = 1024;
|
|
buf = malloc(buflen, M_TEMP, M_WAITOK);
|
|
/* Get the directory vnode for the DS mount and the file handle. */
|
|
error = nfsrv_dsgetsockmnt(vp, 0, buf, &buflen, mirrorcntp, p, dvpp,
|
|
NULL, NULL, fname, NULL, NULL, NULL, NULL, NULL);
|
|
free(buf, M_TEMP);
|
|
if (error != 0)
|
|
printf("pNFS: nfsrv_pnfsremovesetup getsockmnt=%d\n", error);
|
|
}
|
|
|
|
/*
|
|
* Remove a DS data file for nfsrv_pnfsremove(). Called for each mirror.
|
|
* The arguments are in a structure, so that they can be passed through
|
|
* taskqueue for a kernel process to execute this function.
|
|
*/
|
|
struct nfsrvdsremove {
|
|
int done;
|
|
int inprog;
|
|
struct task tsk;
|
|
struct ucred *tcred;
|
|
struct vnode *dvp;
|
|
NFSPROC_T *p;
|
|
int err;
|
|
char fname[PNFS_FILENAME_LEN + 1];
|
|
};
|
|
|
|
static int
|
|
nfsrv_dsremove(struct vnode *dvp, char *fname, struct ucred *tcred,
|
|
NFSPROC_T *p)
|
|
{
|
|
struct nameidata named;
|
|
struct vnode *nvp;
|
|
char *bufp;
|
|
u_long *hashp;
|
|
int error;
|
|
|
|
error = NFSVOPLOCK(dvp, LK_EXCLUSIVE);
|
|
if (error != 0)
|
|
return (error);
|
|
named.ni_cnd.cn_nameiop = DELETE;
|
|
named.ni_cnd.cn_lkflags = LK_EXCLUSIVE | LK_RETRY;
|
|
named.ni_cnd.cn_cred = tcred;
|
|
named.ni_cnd.cn_thread = p;
|
|
named.ni_cnd.cn_flags = ISLASTCN | LOCKPARENT | LOCKLEAF | SAVENAME;
|
|
nfsvno_setpathbuf(&named, &bufp, &hashp);
|
|
named.ni_cnd.cn_nameptr = bufp;
|
|
named.ni_cnd.cn_namelen = strlen(fname);
|
|
strlcpy(bufp, fname, NAME_MAX);
|
|
NFSD_DEBUG(4, "nfsrv_pnfsremove: filename=%s\n", bufp);
|
|
error = VOP_LOOKUP(dvp, &nvp, &named.ni_cnd);
|
|
NFSD_DEBUG(4, "nfsrv_pnfsremove: aft LOOKUP=%d\n", error);
|
|
if (error == 0) {
|
|
error = VOP_REMOVE(dvp, nvp, &named.ni_cnd);
|
|
vput(nvp);
|
|
}
|
|
NFSVOPUNLOCK(dvp, 0);
|
|
nfsvno_relpathbuf(&named);
|
|
if (error != 0)
|
|
printf("pNFS: nfsrv_pnfsremove failed=%d\n", error);
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* Start up the thread that will execute nfsrv_dsremove().
|
|
*/
|
|
static void
|
|
start_dsremove(void *arg, int pending)
|
|
{
|
|
struct nfsrvdsremove *dsrm;
|
|
|
|
dsrm = (struct nfsrvdsremove *)arg;
|
|
dsrm->err = nfsrv_dsremove(dsrm->dvp, dsrm->fname, dsrm->tcred,
|
|
dsrm->p);
|
|
dsrm->done = 1;
|
|
NFSD_DEBUG(4, "start_dsremove: err=%d\n", dsrm->err);
|
|
}
|
|
|
|
/*
|
|
* Remove a pNFS data file from a Data Server.
|
|
* nfsrv_pnfsremovesetup() must have been called before the MDS file was
|
|
* removed to set up the dvp and fill in the FH.
|
|
*/
|
|
static void
|
|
nfsrv_pnfsremove(struct vnode **dvp, int mirrorcnt, char *fname, fhandle_t *fhp,
|
|
NFSPROC_T *p)
|
|
{
|
|
struct ucred *tcred;
|
|
struct nfsrvdsremove *dsrm, *tdsrm;
|
|
struct nfsdevice *ds;
|
|
struct nfsmount *nmp;
|
|
int failpos, i, ret, timo;
|
|
|
|
tcred = newnfs_getcred();
|
|
dsrm = NULL;
|
|
if (mirrorcnt > 1)
|
|
dsrm = malloc(sizeof(*dsrm) * mirrorcnt - 1, M_TEMP, M_WAITOK);
|
|
/*
|
|
* Remove the file on each DS mirror, using kernel process(es) for the
|
|
* additional mirrors.
|
|
*/
|
|
failpos = -1;
|
|
for (tdsrm = dsrm, i = 0; i < mirrorcnt - 1; i++, tdsrm++) {
|
|
tdsrm->tcred = tcred;
|
|
tdsrm->p = p;
|
|
tdsrm->dvp = dvp[i];
|
|
strlcpy(tdsrm->fname, fname, PNFS_FILENAME_LEN + 1);
|
|
tdsrm->inprog = 0;
|
|
tdsrm->done = 0;
|
|
tdsrm->err = 0;
|
|
ret = EIO;
|
|
if (nfs_pnfsiothreads != 0) {
|
|
ret = nfs_pnfsio(start_dsremove, tdsrm);
|
|
NFSD_DEBUG(4, "nfsrv_pnfsremove: nfs_pnfsio=%d\n", ret);
|
|
}
|
|
if (ret != 0) {
|
|
ret = nfsrv_dsremove(dvp[i], fname, tcred, p);
|
|
if (failpos == -1 && nfsds_failerr(ret))
|
|
failpos = i;
|
|
}
|
|
}
|
|
ret = nfsrv_dsremove(dvp[mirrorcnt - 1], fname, tcred, p);
|
|
if (failpos == -1 && mirrorcnt > 1 && nfsds_failerr(ret))
|
|
failpos = mirrorcnt - 1;
|
|
timo = hz / 50; /* Wait for 20msec. */
|
|
if (timo < 1)
|
|
timo = 1;
|
|
/* Wait for kernel task(s) to complete. */
|
|
for (tdsrm = dsrm, i = 0; i < mirrorcnt - 1; i++, tdsrm++) {
|
|
while (tdsrm->inprog != 0 && tdsrm->done == 0)
|
|
tsleep(&tdsrm->tsk, PVFS, "srvdsrm", timo);
|
|
if (failpos == -1 && nfsds_failerr(tdsrm->err))
|
|
failpos = i;
|
|
}
|
|
|
|
/*
|
|
* If failpos has been set, that mirror has failed, so it needs
|
|
* to be disabled.
|
|
*/
|
|
if (failpos >= 0) {
|
|
nmp = VFSTONFS(dvp[failpos]->v_mount);
|
|
NFSLOCKMNT(nmp);
|
|
if ((nmp->nm_privflag & (NFSMNTP_FORCEDISM |
|
|
NFSMNTP_CANCELRPCS)) == 0) {
|
|
nmp->nm_privflag |= NFSMNTP_CANCELRPCS;
|
|
NFSUNLOCKMNT(nmp);
|
|
ds = nfsrv_deldsnmp(PNFSDOP_DELDSSERVER, nmp, p);
|
|
NFSD_DEBUG(4, "dsremovefail fail=%d ds=%p\n", failpos,
|
|
ds);
|
|
if (ds != NULL)
|
|
nfsrv_killrpcs(nmp);
|
|
NFSLOCKMNT(nmp);
|
|
nmp->nm_privflag &= ~NFSMNTP_CANCELRPCS;
|
|
wakeup(nmp);
|
|
}
|
|
NFSUNLOCKMNT(nmp);
|
|
}
|
|
|
|
/* Get rid all layouts for the file. */
|
|
nfsrv_freefilelayouts(fhp);
|
|
|
|
NFSFREECRED(tcred);
|
|
free(dsrm, M_TEMP);
|
|
}
|
|
|
|
/*
|
|
* Generate a file name based on the file handle and put it in *bufp.
|
|
* Return the number of bytes generated.
|
|
*/
|
|
static int
|
|
nfsrv_putfhname(fhandle_t *fhp, char *bufp)
|
|
{
|
|
int i;
|
|
uint8_t *cp;
|
|
const uint8_t *hexdigits = "0123456789abcdef";
|
|
|
|
cp = (uint8_t *)fhp;
|
|
for (i = 0; i < sizeof(*fhp); i++) {
|
|
bufp[2 * i] = hexdigits[(*cp >> 4) & 0xf];
|
|
bufp[2 * i + 1] = hexdigits[*cp++ & 0xf];
|
|
}
|
|
bufp[2 * i] = '\0';
|
|
return (2 * i);
|
|
}
|
|
|
|
/*
|
|
* Update the Metadata file's attributes from the DS file when a Read/Write
|
|
* layout is returned.
|
|
* Basically just call nfsrv_proxyds() with procedure == NFSPROC_LAYOUTRETURN
|
|
* so that it does a nfsrv_getattrdsrpc() and nfsrv_setextattr() on the DS file.
|
|
*/
|
|
int
|
|
nfsrv_updatemdsattr(struct vnode *vp, struct nfsvattr *nap, NFSPROC_T *p)
|
|
{
|
|
struct ucred *tcred;
|
|
int error;
|
|
|
|
/* Do this as root so that it won't fail with EACCES. */
|
|
tcred = newnfs_getcred();
|
|
error = nfsrv_proxyds(NULL, vp, 0, 0, tcred, p, NFSPROC_LAYOUTRETURN,
|
|
NULL, NULL, NULL, nap, NULL);
|
|
NFSFREECRED(tcred);
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* Set the NFSv4 ACL on the DS file to the same ACL as the MDS file.
|
|
*/
|
|
static int
|
|
nfsrv_dssetacl(struct vnode *vp, struct acl *aclp, struct ucred *cred,
|
|
NFSPROC_T *p)
|
|
{
|
|
int error;
|
|
|
|
error = nfsrv_proxyds(NULL, vp, 0, 0, cred, p, NFSPROC_SETACL,
|
|
NULL, NULL, NULL, NULL, aclp);
|
|
return (error);
|
|
}
|
|
|
|
static int
|
|
nfsrv_proxyds(struct nfsrv_descript *nd, struct vnode *vp, off_t off, int cnt,
|
|
struct ucred *cred, struct thread *p, int ioproc, struct mbuf **mpp,
|
|
char *cp, struct mbuf **mpp2, struct nfsvattr *nap, struct acl *aclp)
|
|
{
|
|
struct nfsmount *nmp[NFSDEV_MAXMIRRORS], *failnmp;
|
|
fhandle_t fh[NFSDEV_MAXMIRRORS];
|
|
struct vnode *dvp[NFSDEV_MAXMIRRORS];
|
|
struct nfsdevice *ds;
|
|
struct pnfsdsattr dsattr;
|
|
char *buf;
|
|
int buflen, error, failpos, i, mirrorcnt, origmircnt, trycnt;
|
|
|
|
NFSD_DEBUG(4, "in nfsrv_proxyds\n");
|
|
/*
|
|
* If not a regular file, not exported or not a pNFS server,
|
|
* just return ENOENT.
|
|
*/
|
|
if (vp->v_type != VREG || (vp->v_mount->mnt_flag & MNT_EXPORTED) == 0 ||
|
|
nfsrv_devidcnt == 0)
|
|
return (ENOENT);
|
|
|
|
buflen = 1024;
|
|
buf = malloc(buflen, M_TEMP, M_WAITOK);
|
|
error = 0;
|
|
|
|
/*
|
|
* For Getattr, get the Change attribute (va_filerev) and size (va_size)
|
|
* from the MetaData file's extended attribute.
|
|
*/
|
|
if (ioproc == NFSPROC_GETATTR) {
|
|
error = vn_extattr_get(vp, IO_NODELOCKED,
|
|
EXTATTR_NAMESPACE_SYSTEM, "pnfsd.dsattr", &buflen, buf,
|
|
p);
|
|
if (error == 0 && buflen != sizeof(dsattr))
|
|
error = ENXIO;
|
|
if (error == 0) {
|
|
NFSBCOPY(buf, &dsattr, buflen);
|
|
nap->na_filerev = dsattr.dsa_filerev;
|
|
nap->na_size = dsattr.dsa_size;
|
|
nap->na_atime = dsattr.dsa_atime;
|
|
nap->na_mtime = dsattr.dsa_mtime;
|
|
|
|
/*
|
|
* If nfsrv_pnfsgetdsattr is 0 or nfsrv_checkdsattr()
|
|
* returns 0, just return now. nfsrv_checkdsattr()
|
|
* returns 0 if there is no Read/Write layout
|
|
* plus either an Open/Write_access or Write
|
|
* delegation issued to a client for the file.
|
|
*/
|
|
if (nfsrv_pnfsgetdsattr == 0 ||
|
|
nfsrv_checkdsattr(nd, vp, p) == 0) {
|
|
free(buf, M_TEMP);
|
|
return (error);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Clear ENOATTR so the code below will attempt to do a
|
|
* nfsrv_getattrdsrpc() to get the attributes and (re)create
|
|
* the extended attribute.
|
|
*/
|
|
if (error == ENOATTR)
|
|
error = 0;
|
|
}
|
|
|
|
origmircnt = -1;
|
|
trycnt = 0;
|
|
tryagain:
|
|
if (error == 0) {
|
|
buflen = 1024;
|
|
if (ioproc == NFSPROC_READDS && NFSVOPISLOCKED(vp) ==
|
|
LK_EXCLUSIVE)
|
|
printf("nfsrv_proxyds: Readds vp exclusively locked\n");
|
|
error = nfsrv_dsgetsockmnt(vp, LK_SHARED, buf, &buflen,
|
|
&mirrorcnt, p, dvp, fh, NULL, NULL, NULL, NULL, NULL,
|
|
NULL, NULL);
|
|
if (error == 0) {
|
|
for (i = 0; i < mirrorcnt; i++)
|
|
nmp[i] = VFSTONFS(dvp[i]->v_mount);
|
|
} else
|
|
printf("pNFS: proxy getextattr sockaddr=%d\n", error);
|
|
} else
|
|
printf("pNFS: nfsrv_dsgetsockmnt=%d\n", error);
|
|
if (error == 0) {
|
|
failpos = -1;
|
|
if (origmircnt == -1)
|
|
origmircnt = mirrorcnt;
|
|
/*
|
|
* If failpos is set to a mirror#, then that mirror has
|
|
* failed and will be disabled. For Read and Getattr, the
|
|
* function only tries one mirror, so if that mirror has
|
|
* failed, it will need to be retried. As such, increment
|
|
* tryitagain for these cases.
|
|
* For Write, Setattr and Setacl, the function tries all
|
|
* mirrors and will not return an error for the case where
|
|
* one mirror has failed. For these cases, the functioning
|
|
* mirror(s) will have been modified, so a retry isn't
|
|
* necessary. These functions will set failpos for the
|
|
* failed mirror#.
|
|
*/
|
|
if (ioproc == NFSPROC_READDS) {
|
|
error = nfsrv_readdsrpc(fh, off, cnt, cred, p, nmp[0],
|
|
mpp, mpp2);
|
|
if (nfsds_failerr(error) && mirrorcnt > 1) {
|
|
/*
|
|
* Setting failpos will cause the mirror
|
|
* to be disabled and then a retry of this
|
|
* read is required.
|
|
*/
|
|
failpos = 0;
|
|
error = 0;
|
|
trycnt++;
|
|
}
|
|
} else if (ioproc == NFSPROC_WRITEDS)
|
|
error = nfsrv_writedsrpc(fh, off, cnt, cred, p, vp,
|
|
&nmp[0], mirrorcnt, mpp, cp, &failpos);
|
|
else if (ioproc == NFSPROC_SETATTR)
|
|
error = nfsrv_setattrdsrpc(fh, cred, p, vp, &nmp[0],
|
|
mirrorcnt, nap, &failpos);
|
|
else if (ioproc == NFSPROC_SETACL)
|
|
error = nfsrv_setacldsrpc(fh, cred, p, vp, &nmp[0],
|
|
mirrorcnt, aclp, &failpos);
|
|
else {
|
|
error = nfsrv_getattrdsrpc(&fh[mirrorcnt - 1], cred, p,
|
|
vp, nmp[mirrorcnt - 1], nap);
|
|
if (nfsds_failerr(error) && mirrorcnt > 1) {
|
|
/*
|
|
* Setting failpos will cause the mirror
|
|
* to be disabled and then a retry of this
|
|
* getattr is required.
|
|
*/
|
|
failpos = mirrorcnt - 1;
|
|
error = 0;
|
|
trycnt++;
|
|
}
|
|
}
|
|
ds = NULL;
|
|
if (failpos >= 0) {
|
|
failnmp = nmp[failpos];
|
|
NFSLOCKMNT(failnmp);
|
|
if ((failnmp->nm_privflag & (NFSMNTP_FORCEDISM |
|
|
NFSMNTP_CANCELRPCS)) == 0) {
|
|
failnmp->nm_privflag |= NFSMNTP_CANCELRPCS;
|
|
NFSUNLOCKMNT(failnmp);
|
|
ds = nfsrv_deldsnmp(PNFSDOP_DELDSSERVER,
|
|
failnmp, p);
|
|
NFSD_DEBUG(4, "dsldsnmp fail=%d ds=%p\n",
|
|
failpos, ds);
|
|
if (ds != NULL)
|
|
nfsrv_killrpcs(failnmp);
|
|
NFSLOCKMNT(failnmp);
|
|
failnmp->nm_privflag &= ~NFSMNTP_CANCELRPCS;
|
|
wakeup(failnmp);
|
|
}
|
|
NFSUNLOCKMNT(failnmp);
|
|
}
|
|
for (i = 0; i < mirrorcnt; i++)
|
|
NFSVOPUNLOCK(dvp[i], 0);
|
|
NFSD_DEBUG(4, "nfsrv_proxyds: aft RPC=%d trya=%d\n", error,
|
|
trycnt);
|
|
/* Try the Read/Getattr again if a mirror was deleted. */
|
|
if (ds != NULL && trycnt > 0 && trycnt < origmircnt)
|
|
goto tryagain;
|
|
} else {
|
|
/* Return ENOENT for any Extended Attribute error. */
|
|
error = ENOENT;
|
|
}
|
|
free(buf, M_TEMP);
|
|
NFSD_DEBUG(4, "nfsrv_proxyds: error=%d\n", error);
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* Get the DS mount point, fh and directory from the "pnfsd.dsfile" extended
|
|
* attribute.
|
|
* newnmpp - If it points to a non-NULL nmp, that is the destination and needs
|
|
* to be checked. If it points to a NULL nmp, then it returns
|
|
* a suitable destination.
|
|
* curnmp - If non-NULL, it is the source mount for the copy.
|
|
*/
|
|
int
|
|
nfsrv_dsgetsockmnt(struct vnode *vp, int lktype, char *buf, int *buflenp,
|
|
int *mirrorcntp, NFSPROC_T *p, struct vnode **dvpp, fhandle_t *fhp,
|
|
char *devid, char *fnamep, struct vnode **nvpp, struct nfsmount **newnmpp,
|
|
struct nfsmount *curnmp, int *ippos, int *dsdirp)
|
|
{
|
|
struct vnode *dvp, *nvp, **tdvpp;
|
|
struct mount *mp;
|
|
struct nfsmount *nmp, *newnmp;
|
|
struct sockaddr *sad;
|
|
struct sockaddr_in *sin;
|
|
struct nfsdevice *ds, *tds, *fndds;
|
|
struct pnfsdsfile *pf;
|
|
uint32_t dsdir;
|
|
int error, fhiszero, fnd, gotone, i, mirrorcnt;
|
|
|
|
ASSERT_VOP_LOCKED(vp, "nfsrv_dsgetsockmnt vp");
|
|
*mirrorcntp = 1;
|
|
tdvpp = dvpp;
|
|
if (nvpp != NULL)
|
|
*nvpp = NULL;
|
|
if (dvpp != NULL)
|
|
*dvpp = NULL;
|
|
if (ippos != NULL)
|
|
*ippos = -1;
|
|
if (newnmpp != NULL)
|
|
newnmp = *newnmpp;
|
|
else
|
|
newnmp = NULL;
|
|
mp = vp->v_mount;
|
|
error = vn_extattr_get(vp, IO_NODELOCKED, EXTATTR_NAMESPACE_SYSTEM,
|
|
"pnfsd.dsfile", buflenp, buf, p);
|
|
mirrorcnt = *buflenp / sizeof(*pf);
|
|
if (error == 0 && (mirrorcnt < 1 || mirrorcnt > NFSDEV_MAXMIRRORS ||
|
|
*buflenp != sizeof(*pf) * mirrorcnt))
|
|
error = ENOATTR;
|
|
|
|
pf = (struct pnfsdsfile *)buf;
|
|
/* If curnmp != NULL, check for a match in the mirror list. */
|
|
if (curnmp != NULL && error == 0) {
|
|
fnd = 0;
|
|
for (i = 0; i < mirrorcnt; i++, pf++) {
|
|
sad = (struct sockaddr *)&pf->dsf_sin;
|
|
if (nfsaddr2_match(sad, curnmp->nm_nam)) {
|
|
if (ippos != NULL)
|
|
*ippos = i;
|
|
fnd = 1;
|
|
break;
|
|
}
|
|
}
|
|
if (fnd == 0)
|
|
error = ENXIO;
|
|
}
|
|
|
|
gotone = 0;
|
|
pf = (struct pnfsdsfile *)buf;
|
|
NFSD_DEBUG(4, "nfsrv_dsgetsockmnt: mirrorcnt=%d err=%d\n", mirrorcnt,
|
|
error);
|
|
for (i = 0; i < mirrorcnt && error == 0; i++, pf++) {
|
|
fhiszero = 0;
|
|
sad = (struct sockaddr *)&pf->dsf_sin;
|
|
sin = &pf->dsf_sin;
|
|
dsdir = pf->dsf_dir;
|
|
if (dsdir >= nfsrv_dsdirsize) {
|
|
printf("nfsrv_dsgetsockmnt: dsdir=%d\n", dsdir);
|
|
error = ENOATTR;
|
|
} else if (nvpp != NULL && newnmp != NULL &&
|
|
nfsaddr2_match(sad, newnmp->nm_nam))
|
|
error = EEXIST;
|
|
if (error == 0) {
|
|
if (ippos != NULL && curnmp == NULL &&
|
|
sad->sa_family == AF_INET &&
|
|
sin->sin_addr.s_addr == 0)
|
|
*ippos = i;
|
|
if (NFSBCMP(&zerofh, &pf->dsf_fh, sizeof(zerofh)) == 0)
|
|
fhiszero = 1;
|
|
/* Use the socket address to find the mount point. */
|
|
fndds = NULL;
|
|
NFSDDSLOCK();
|
|
/* Find a match for the IP address. */
|
|
TAILQ_FOREACH(ds, &nfsrv_devidhead, nfsdev_list) {
|
|
if (ds->nfsdev_nmp != NULL) {
|
|
dvp = ds->nfsdev_dvp;
|
|
nmp = VFSTONFS(dvp->v_mount);
|
|
if (nmp != ds->nfsdev_nmp)
|
|
printf("different2 nmp %p %p\n",
|
|
nmp, ds->nfsdev_nmp);
|
|
if (nfsaddr2_match(sad, nmp->nm_nam)) {
|
|
fndds = ds;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
if (fndds != NULL && newnmpp != NULL &&
|
|
newnmp == NULL) {
|
|
/* Search for a place to make a mirror copy. */
|
|
TAILQ_FOREACH(tds, &nfsrv_devidhead,
|
|
nfsdev_list) {
|
|
if (tds->nfsdev_nmp != NULL &&
|
|
fndds != tds &&
|
|
((tds->nfsdev_mdsisset == 0 &&
|
|
fndds->nfsdev_mdsisset == 0) ||
|
|
(tds->nfsdev_mdsisset != 0 &&
|
|
fndds->nfsdev_mdsisset != 0 &&
|
|
tds->nfsdev_mdsfsid.val[0] ==
|
|
mp->mnt_stat.f_fsid.val[0] &&
|
|
tds->nfsdev_mdsfsid.val[1] ==
|
|
mp->mnt_stat.f_fsid.val[1]))) {
|
|
*newnmpp = tds->nfsdev_nmp;
|
|
break;
|
|
}
|
|
}
|
|
if (tds != NULL) {
|
|
/*
|
|
* Move this entry to the end of the
|
|
* list, so it won't be selected as
|
|
* easily the next time.
|
|
*/
|
|
TAILQ_REMOVE(&nfsrv_devidhead, tds,
|
|
nfsdev_list);
|
|
TAILQ_INSERT_TAIL(&nfsrv_devidhead, tds,
|
|
nfsdev_list);
|
|
}
|
|
}
|
|
NFSDDSUNLOCK();
|
|
if (fndds != NULL) {
|
|
dvp = fndds->nfsdev_dsdir[dsdir];
|
|
if (lktype != 0 || fhiszero != 0 ||
|
|
(nvpp != NULL && *nvpp == NULL)) {
|
|
if (fhiszero != 0)
|
|
error = vn_lock(dvp,
|
|
LK_EXCLUSIVE);
|
|
else if (lktype != 0)
|
|
error = vn_lock(dvp, lktype);
|
|
else
|
|
error = vn_lock(dvp, LK_SHARED);
|
|
/*
|
|
* If the file handle is all 0's, try to
|
|
* do a Lookup against the DS to acquire
|
|
* it.
|
|
* If dvpp == NULL or the Lookup fails,
|
|
* unlock dvp after the call.
|
|
*/
|
|
if (error == 0 && (fhiszero != 0 ||
|
|
(nvpp != NULL && *nvpp == NULL))) {
|
|
error = nfsrv_pnfslookupds(vp,
|
|
dvp, pf, &nvp, p);
|
|
if (error == 0) {
|
|
if (fhiszero != 0)
|
|
nfsrv_pnfssetfh(
|
|
vp, pf,
|
|
devid,
|
|
fnamep,
|
|
nvp, p);
|
|
if (nvpp != NULL &&
|
|
*nvpp == NULL) {
|
|
*nvpp = nvp;
|
|
*dsdirp = dsdir;
|
|
} else
|
|
vput(nvp);
|
|
}
|
|
if (error != 0 || lktype == 0)
|
|
NFSVOPUNLOCK(dvp, 0);
|
|
}
|
|
}
|
|
if (error == 0) {
|
|
gotone++;
|
|
NFSD_DEBUG(4, "gotone=%d\n", gotone);
|
|
if (devid != NULL) {
|
|
NFSBCOPY(fndds->nfsdev_deviceid,
|
|
devid, NFSX_V4DEVICEID);
|
|
devid += NFSX_V4DEVICEID;
|
|
}
|
|
if (dvpp != NULL)
|
|
*tdvpp++ = dvp;
|
|
if (fhp != NULL)
|
|
NFSBCOPY(&pf->dsf_fh, fhp++,
|
|
NFSX_MYFH);
|
|
if (fnamep != NULL && gotone == 1)
|
|
strlcpy(fnamep,
|
|
pf->dsf_filename,
|
|
sizeof(pf->dsf_filename));
|
|
} else
|
|
NFSD_DEBUG(4, "nfsrv_dsgetsockmnt "
|
|
"err=%d\n", error);
|
|
}
|
|
}
|
|
}
|
|
if (error == 0 && gotone == 0)
|
|
error = ENOENT;
|
|
|
|
NFSD_DEBUG(4, "eo nfsrv_dsgetsockmnt: gotone=%d err=%d\n", gotone,
|
|
error);
|
|
if (error == 0)
|
|
*mirrorcntp = gotone;
|
|
else {
|
|
if (gotone > 0 && dvpp != NULL) {
|
|
/*
|
|
* If the error didn't occur on the first one and
|
|
* dvpp != NULL, the one(s) prior to the failure will
|
|
* have locked dvp's that need to be unlocked.
|
|
*/
|
|
for (i = 0; i < gotone; i++) {
|
|
NFSVOPUNLOCK(*dvpp, 0);
|
|
*dvpp++ = NULL;
|
|
}
|
|
}
|
|
/*
|
|
* If it found the vnode to be copied from before a failure,
|
|
* it needs to be vput()'d.
|
|
*/
|
|
if (nvpp != NULL && *nvpp != NULL) {
|
|
vput(*nvpp);
|
|
*nvpp = NULL;
|
|
}
|
|
}
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* Set the extended attribute for the Change attribute.
|
|
*/
|
|
static int
|
|
nfsrv_setextattr(struct vnode *vp, struct nfsvattr *nap, NFSPROC_T *p)
|
|
{
|
|
struct pnfsdsattr dsattr;
|
|
int error;
|
|
|
|
ASSERT_VOP_ELOCKED(vp, "nfsrv_setextattr vp");
|
|
dsattr.dsa_filerev = nap->na_filerev;
|
|
dsattr.dsa_size = nap->na_size;
|
|
dsattr.dsa_atime = nap->na_atime;
|
|
dsattr.dsa_mtime = nap->na_mtime;
|
|
error = vn_extattr_set(vp, IO_NODELOCKED, EXTATTR_NAMESPACE_SYSTEM,
|
|
"pnfsd.dsattr", sizeof(dsattr), (char *)&dsattr, p);
|
|
if (error != 0)
|
|
printf("pNFS: setextattr=%d\n", error);
|
|
return (error);
|
|
}
|
|
|
|
static int
|
|
nfsrv_readdsrpc(fhandle_t *fhp, off_t off, int len, struct ucred *cred,
|
|
NFSPROC_T *p, struct nfsmount *nmp, struct mbuf **mpp, struct mbuf **mpendp)
|
|
{
|
|
uint32_t *tl;
|
|
struct nfsrv_descript *nd;
|
|
nfsv4stateid_t st;
|
|
struct mbuf *m, *m2;
|
|
int error = 0, retlen, tlen, trimlen;
|
|
|
|
NFSD_DEBUG(4, "in nfsrv_readdsrpc\n");
|
|
nd = malloc(sizeof(*nd), M_TEMP, M_WAITOK | M_ZERO);
|
|
*mpp = NULL;
|
|
/*
|
|
* Use a stateid where other is an alternating 01010 pattern and
|
|
* seqid is 0xffffffff. This value is not defined as special by
|
|
* the RFC and is used by the FreeBSD NFS server to indicate an
|
|
* MDS->DS proxy operation.
|
|
*/
|
|
st.other[0] = 0x55555555;
|
|
st.other[1] = 0x55555555;
|
|
st.other[2] = 0x55555555;
|
|
st.seqid = 0xffffffff;
|
|
nfscl_reqstart(nd, NFSPROC_READDS, nmp, (u_int8_t *)fhp, sizeof(*fhp),
|
|
NULL, NULL, 0, 0);
|
|
nfsm_stateidtom(nd, &st, NFSSTATEID_PUTSTATEID);
|
|
NFSM_BUILD(tl, uint32_t *, NFSX_UNSIGNED * 3);
|
|
txdr_hyper(off, tl);
|
|
*(tl + 2) = txdr_unsigned(len);
|
|
error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred,
|
|
NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL);
|
|
if (error != 0) {
|
|
free(nd, M_TEMP);
|
|
return (error);
|
|
}
|
|
if (nd->nd_repstat == 0) {
|
|
NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
|
|
NFSM_STRSIZ(retlen, len);
|
|
if (retlen > 0) {
|
|
/* Trim off the pre-data XDR from the mbuf chain. */
|
|
m = nd->nd_mrep;
|
|
while (m != NULL && m != nd->nd_md) {
|
|
if (m->m_next == nd->nd_md) {
|
|
m->m_next = NULL;
|
|
m_freem(nd->nd_mrep);
|
|
nd->nd_mrep = m = nd->nd_md;
|
|
} else
|
|
m = m->m_next;
|
|
}
|
|
if (m == NULL) {
|
|
printf("nfsrv_readdsrpc: busted mbuf list\n");
|
|
error = ENOENT;
|
|
goto nfsmout;
|
|
}
|
|
|
|
/*
|
|
* Now, adjust first mbuf so that any XDR before the
|
|
* read data is skipped over.
|
|
*/
|
|
trimlen = nd->nd_dpos - mtod(m, char *);
|
|
if (trimlen > 0) {
|
|
m->m_len -= trimlen;
|
|
NFSM_DATAP(m, trimlen);
|
|
}
|
|
|
|
/*
|
|
* Truncate the mbuf chain at retlen bytes of data,
|
|
* plus XDR padding that brings the length up to a
|
|
* multiple of 4.
|
|
*/
|
|
tlen = NFSM_RNDUP(retlen);
|
|
do {
|
|
if (m->m_len >= tlen) {
|
|
m->m_len = tlen;
|
|
tlen = 0;
|
|
m2 = m->m_next;
|
|
m->m_next = NULL;
|
|
m_freem(m2);
|
|
break;
|
|
}
|
|
tlen -= m->m_len;
|
|
m = m->m_next;
|
|
} while (m != NULL);
|
|
if (tlen > 0) {
|
|
printf("nfsrv_readdsrpc: busted mbuf list\n");
|
|
error = ENOENT;
|
|
goto nfsmout;
|
|
}
|
|
*mpp = nd->nd_mrep;
|
|
*mpendp = m;
|
|
nd->nd_mrep = NULL;
|
|
}
|
|
} else
|
|
error = nd->nd_repstat;
|
|
nfsmout:
|
|
/* If nd->nd_mrep is already NULL, this is a no-op. */
|
|
m_freem(nd->nd_mrep);
|
|
free(nd, M_TEMP);
|
|
NFSD_DEBUG(4, "nfsrv_readdsrpc error=%d\n", error);
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* Do a write RPC on a DS data file, using this structure for the arguments,
|
|
* so that this function can be executed by a separate kernel process.
|
|
*/
|
|
struct nfsrvwritedsdorpc {
|
|
int done;
|
|
int inprog;
|
|
struct task tsk;
|
|
fhandle_t fh;
|
|
off_t off;
|
|
int len;
|
|
struct nfsmount *nmp;
|
|
struct ucred *cred;
|
|
NFSPROC_T *p;
|
|
struct mbuf *m;
|
|
int err;
|
|
};
|
|
|
|
static int
|
|
nfsrv_writedsdorpc(struct nfsmount *nmp, fhandle_t *fhp, off_t off, int len,
|
|
struct nfsvattr *nap, struct mbuf *m, struct ucred *cred, NFSPROC_T *p)
|
|
{
|
|
uint32_t *tl;
|
|
struct nfsrv_descript *nd;
|
|
nfsattrbit_t attrbits;
|
|
nfsv4stateid_t st;
|
|
int commit, error, retlen;
|
|
|
|
nd = malloc(sizeof(*nd), M_TEMP, M_WAITOK | M_ZERO);
|
|
nfscl_reqstart(nd, NFSPROC_WRITE, nmp, (u_int8_t *)fhp,
|
|
sizeof(fhandle_t), NULL, NULL, 0, 0);
|
|
|
|
/*
|
|
* Use a stateid where other is an alternating 01010 pattern and
|
|
* seqid is 0xffffffff. This value is not defined as special by
|
|
* the RFC and is used by the FreeBSD NFS server to indicate an
|
|
* MDS->DS proxy operation.
|
|
*/
|
|
st.other[0] = 0x55555555;
|
|
st.other[1] = 0x55555555;
|
|
st.other[2] = 0x55555555;
|
|
st.seqid = 0xffffffff;
|
|
nfsm_stateidtom(nd, &st, NFSSTATEID_PUTSTATEID);
|
|
NFSM_BUILD(tl, u_int32_t *, NFSX_HYPER + 2 * NFSX_UNSIGNED);
|
|
txdr_hyper(off, tl);
|
|
tl += 2;
|
|
/*
|
|
* Do all writes FileSync, since the server doesn't hold onto dirty
|
|
* buffers. Since clients should be accessing the DS servers directly
|
|
* using the pNFS layouts, this just needs to work correctly as a
|
|
* fallback.
|
|
*/
|
|
*tl++ = txdr_unsigned(NFSWRITE_FILESYNC);
|
|
*tl = txdr_unsigned(len);
|
|
NFSD_DEBUG(4, "nfsrv_writedsdorpc: len=%d\n", len);
|
|
|
|
/* Put data in mbuf chain. */
|
|
nd->nd_mb->m_next = m;
|
|
|
|
/* Set nd_mb and nd_bpos to end of data. */
|
|
while (m->m_next != NULL)
|
|
m = m->m_next;
|
|
nd->nd_mb = m;
|
|
nd->nd_bpos = mtod(m, char *) + m->m_len;
|
|
NFSD_DEBUG(4, "nfsrv_writedsdorpc: lastmb len=%d\n", m->m_len);
|
|
|
|
/* Do a Getattr for Size, Change and Modify Time. */
|
|
NFSZERO_ATTRBIT(&attrbits);
|
|
NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_SIZE);
|
|
NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_CHANGE);
|
|
NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_TIMEACCESS);
|
|
NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_TIMEMODIFY);
|
|
NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
|
|
*tl = txdr_unsigned(NFSV4OP_GETATTR);
|
|
(void) nfsrv_putattrbit(nd, &attrbits);
|
|
error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p,
|
|
cred, NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL);
|
|
if (error != 0) {
|
|
free(nd, M_TEMP);
|
|
return (error);
|
|
}
|
|
NFSD_DEBUG(4, "nfsrv_writedsdorpc: aft writerpc=%d\n", nd->nd_repstat);
|
|
/* Get rid of weak cache consistency data for now. */
|
|
if ((nd->nd_flag & (ND_NOMOREDATA | ND_NFSV4 | ND_V4WCCATTR)) ==
|
|
(ND_NFSV4 | ND_V4WCCATTR)) {
|
|
error = nfsv4_loadattr(nd, NULL, nap, NULL, NULL, 0, NULL, NULL,
|
|
NULL, NULL, NULL, 0, NULL, NULL, NULL, NULL, NULL);
|
|
NFSD_DEBUG(4, "nfsrv_writedsdorpc: wcc attr=%d\n", error);
|
|
if (error != 0)
|
|
goto nfsmout;
|
|
/*
|
|
* Get rid of Op# and status for next op.
|
|
*/
|
|
NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED);
|
|
if (*++tl != 0)
|
|
nd->nd_flag |= ND_NOMOREDATA;
|
|
}
|
|
if (nd->nd_repstat == 0) {
|
|
NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED + NFSX_VERF);
|
|
retlen = fxdr_unsigned(int, *tl++);
|
|
commit = fxdr_unsigned(int, *tl);
|
|
if (commit != NFSWRITE_FILESYNC)
|
|
error = NFSERR_IO;
|
|
NFSD_DEBUG(4, "nfsrv_writedsdorpc:retlen=%d commit=%d err=%d\n",
|
|
retlen, commit, error);
|
|
} else
|
|
error = nd->nd_repstat;
|
|
/* We have no use for the Write Verifier since we use FileSync. */
|
|
|
|
/*
|
|
* Get the Change, Size, Access Time and Modify Time attributes and set
|
|
* on the Metadata file, so its attributes will be what the file's
|
|
* would be if it had been written.
|
|
*/
|
|
if (error == 0) {
|
|
NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED);
|
|
error = nfsv4_loadattr(nd, NULL, nap, NULL, NULL, 0, NULL, NULL,
|
|
NULL, NULL, NULL, 0, NULL, NULL, NULL, NULL, NULL);
|
|
}
|
|
NFSD_DEBUG(4, "nfsrv_writedsdorpc: aft loadattr=%d\n", error);
|
|
nfsmout:
|
|
m_freem(nd->nd_mrep);
|
|
free(nd, M_TEMP);
|
|
NFSD_DEBUG(4, "nfsrv_writedsdorpc error=%d\n", error);
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* Start up the thread that will execute nfsrv_writedsdorpc().
|
|
*/
|
|
static void
|
|
start_writedsdorpc(void *arg, int pending)
|
|
{
|
|
struct nfsrvwritedsdorpc *drpc;
|
|
|
|
drpc = (struct nfsrvwritedsdorpc *)arg;
|
|
drpc->err = nfsrv_writedsdorpc(drpc->nmp, &drpc->fh, drpc->off,
|
|
drpc->len, NULL, drpc->m, drpc->cred, drpc->p);
|
|
drpc->done = 1;
|
|
NFSD_DEBUG(4, "start_writedsdorpc: err=%d\n", drpc->err);
|
|
}
|
|
|
|
static int
|
|
nfsrv_writedsrpc(fhandle_t *fhp, off_t off, int len, struct ucred *cred,
|
|
NFSPROC_T *p, struct vnode *vp, struct nfsmount **nmpp, int mirrorcnt,
|
|
struct mbuf **mpp, char *cp, int *failposp)
|
|
{
|
|
struct nfsrvwritedsdorpc *drpc, *tdrpc;
|
|
struct nfsvattr na;
|
|
struct mbuf *m;
|
|
int error, i, offs, ret, timo;
|
|
|
|
NFSD_DEBUG(4, "in nfsrv_writedsrpc\n");
|
|
KASSERT(*mpp != NULL, ("nfsrv_writedsrpc: NULL mbuf chain"));
|
|
drpc = NULL;
|
|
if (mirrorcnt > 1)
|
|
tdrpc = drpc = malloc(sizeof(*drpc) * (mirrorcnt - 1), M_TEMP,
|
|
M_WAITOK);
|
|
|
|
/* Calculate offset in mbuf chain that data starts. */
|
|
offs = cp - mtod(*mpp, char *);
|
|
NFSD_DEBUG(4, "nfsrv_writedsrpc: mcopy offs=%d len=%d\n", offs, len);
|
|
|
|
/*
|
|
* Do the write RPC for every DS, using a separate kernel process
|
|
* for every DS except the last one.
|
|
*/
|
|
error = 0;
|
|
for (i = 0; i < mirrorcnt - 1; i++, tdrpc++) {
|
|
tdrpc->done = 0;
|
|
NFSBCOPY(fhp, &tdrpc->fh, sizeof(*fhp));
|
|
tdrpc->off = off;
|
|
tdrpc->len = len;
|
|
tdrpc->nmp = *nmpp;
|
|
tdrpc->cred = cred;
|
|
tdrpc->p = p;
|
|
tdrpc->inprog = 0;
|
|
tdrpc->err = 0;
|
|
tdrpc->m = m_copym(*mpp, offs, NFSM_RNDUP(len), M_WAITOK);
|
|
ret = EIO;
|
|
if (nfs_pnfsiothreads != 0) {
|
|
ret = nfs_pnfsio(start_writedsdorpc, tdrpc);
|
|
NFSD_DEBUG(4, "nfsrv_writedsrpc: nfs_pnfsio=%d\n",
|
|
ret);
|
|
}
|
|
if (ret != 0) {
|
|
ret = nfsrv_writedsdorpc(*nmpp, fhp, off, len, NULL,
|
|
tdrpc->m, cred, p);
|
|
if (nfsds_failerr(ret) && *failposp == -1)
|
|
*failposp = i;
|
|
else if (error == 0 && ret != 0)
|
|
error = ret;
|
|
}
|
|
nmpp++;
|
|
fhp++;
|
|
}
|
|
m = m_copym(*mpp, offs, NFSM_RNDUP(len), M_WAITOK);
|
|
ret = nfsrv_writedsdorpc(*nmpp, fhp, off, len, &na, m, cred, p);
|
|
if (nfsds_failerr(ret) && *failposp == -1 && mirrorcnt > 1)
|
|
*failposp = mirrorcnt - 1;
|
|
else if (error == 0 && ret != 0)
|
|
error = ret;
|
|
if (error == 0)
|
|
error = nfsrv_setextattr(vp, &na, p);
|
|
NFSD_DEBUG(4, "nfsrv_writedsrpc: aft setextat=%d\n", error);
|
|
tdrpc = drpc;
|
|
timo = hz / 50; /* Wait for 20msec. */
|
|
if (timo < 1)
|
|
timo = 1;
|
|
for (i = 0; i < mirrorcnt - 1; i++, tdrpc++) {
|
|
/* Wait for RPCs on separate threads to complete. */
|
|
while (tdrpc->inprog != 0 && tdrpc->done == 0)
|
|
tsleep(&tdrpc->tsk, PVFS, "srvwrds", timo);
|
|
if (nfsds_failerr(tdrpc->err) && *failposp == -1)
|
|
*failposp = i;
|
|
else if (error == 0 && tdrpc->err != 0)
|
|
error = tdrpc->err;
|
|
}
|
|
free(drpc, M_TEMP);
|
|
return (error);
|
|
}
|
|
|
|
static int
|
|
nfsrv_setattrdsdorpc(fhandle_t *fhp, struct ucred *cred, NFSPROC_T *p,
|
|
struct vnode *vp, struct nfsmount *nmp, struct nfsvattr *nap,
|
|
struct nfsvattr *dsnap)
|
|
{
|
|
uint32_t *tl;
|
|
struct nfsrv_descript *nd;
|
|
nfsv4stateid_t st;
|
|
nfsattrbit_t attrbits;
|
|
int error;
|
|
|
|
NFSD_DEBUG(4, "in nfsrv_setattrdsdorpc\n");
|
|
nd = malloc(sizeof(*nd), M_TEMP, M_WAITOK | M_ZERO);
|
|
/*
|
|
* Use a stateid where other is an alternating 01010 pattern and
|
|
* seqid is 0xffffffff. This value is not defined as special by
|
|
* the RFC and is used by the FreeBSD NFS server to indicate an
|
|
* MDS->DS proxy operation.
|
|
*/
|
|
st.other[0] = 0x55555555;
|
|
st.other[1] = 0x55555555;
|
|
st.other[2] = 0x55555555;
|
|
st.seqid = 0xffffffff;
|
|
nfscl_reqstart(nd, NFSPROC_SETATTR, nmp, (u_int8_t *)fhp, sizeof(*fhp),
|
|
NULL, NULL, 0, 0);
|
|
nfsm_stateidtom(nd, &st, NFSSTATEID_PUTSTATEID);
|
|
nfscl_fillsattr(nd, &nap->na_vattr, vp, NFSSATTR_FULL, 0);
|
|
|
|
/* Do a Getattr for Size, Change, Access Time and Modify Time. */
|
|
NFSZERO_ATTRBIT(&attrbits);
|
|
NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_SIZE);
|
|
NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_CHANGE);
|
|
NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_TIMEACCESS);
|
|
NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_TIMEMODIFY);
|
|
NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
|
|
*tl = txdr_unsigned(NFSV4OP_GETATTR);
|
|
(void) nfsrv_putattrbit(nd, &attrbits);
|
|
error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred,
|
|
NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL);
|
|
if (error != 0) {
|
|
free(nd, M_TEMP);
|
|
return (error);
|
|
}
|
|
NFSD_DEBUG(4, "nfsrv_setattrdsdorpc: aft setattrrpc=%d\n",
|
|
nd->nd_repstat);
|
|
/* Get rid of weak cache consistency data for now. */
|
|
if ((nd->nd_flag & (ND_NOMOREDATA | ND_NFSV4 | ND_V4WCCATTR)) ==
|
|
(ND_NFSV4 | ND_V4WCCATTR)) {
|
|
error = nfsv4_loadattr(nd, NULL, dsnap, NULL, NULL, 0, NULL,
|
|
NULL, NULL, NULL, NULL, 0, NULL, NULL, NULL, NULL, NULL);
|
|
NFSD_DEBUG(4, "nfsrv_setattrdsdorpc: wcc attr=%d\n", error);
|
|
if (error != 0)
|
|
goto nfsmout;
|
|
/*
|
|
* Get rid of Op# and status for next op.
|
|
*/
|
|
NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED);
|
|
if (*++tl != 0)
|
|
nd->nd_flag |= ND_NOMOREDATA;
|
|
}
|
|
error = nfsrv_getattrbits(nd, &attrbits, NULL, NULL);
|
|
if (error != 0)
|
|
goto nfsmout;
|
|
if (nd->nd_repstat != 0)
|
|
error = nd->nd_repstat;
|
|
/*
|
|
* Get the Change, Size, Access Time and Modify Time attributes and set
|
|
* on the Metadata file, so its attributes will be what the file's
|
|
* would be if it had been written.
|
|
*/
|
|
if (error == 0) {
|
|
NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED);
|
|
error = nfsv4_loadattr(nd, NULL, dsnap, NULL, NULL, 0, NULL,
|
|
NULL, NULL, NULL, NULL, 0, NULL, NULL, NULL, NULL, NULL);
|
|
}
|
|
NFSD_DEBUG(4, "nfsrv_setattrdsdorpc: aft setattr loadattr=%d\n", error);
|
|
nfsmout:
|
|
m_freem(nd->nd_mrep);
|
|
free(nd, M_TEMP);
|
|
NFSD_DEBUG(4, "nfsrv_setattrdsdorpc error=%d\n", error);
|
|
return (error);
|
|
}
|
|
|
|
struct nfsrvsetattrdsdorpc {
|
|
int done;
|
|
int inprog;
|
|
struct task tsk;
|
|
fhandle_t fh;
|
|
struct nfsmount *nmp;
|
|
struct vnode *vp;
|
|
struct ucred *cred;
|
|
NFSPROC_T *p;
|
|
struct nfsvattr na;
|
|
struct nfsvattr dsna;
|
|
int err;
|
|
};
|
|
|
|
/*
|
|
* Start up the thread that will execute nfsrv_setattrdsdorpc().
|
|
*/
|
|
static void
|
|
start_setattrdsdorpc(void *arg, int pending)
|
|
{
|
|
struct nfsrvsetattrdsdorpc *drpc;
|
|
|
|
drpc = (struct nfsrvsetattrdsdorpc *)arg;
|
|
drpc->err = nfsrv_setattrdsdorpc(&drpc->fh, drpc->cred, drpc->p,
|
|
drpc->vp, drpc->nmp, &drpc->na, &drpc->dsna);
|
|
drpc->done = 1;
|
|
}
|
|
|
|
static int
|
|
nfsrv_setattrdsrpc(fhandle_t *fhp, struct ucred *cred, NFSPROC_T *p,
|
|
struct vnode *vp, struct nfsmount **nmpp, int mirrorcnt,
|
|
struct nfsvattr *nap, int *failposp)
|
|
{
|
|
struct nfsrvsetattrdsdorpc *drpc, *tdrpc;
|
|
struct nfsvattr na;
|
|
int error, i, ret, timo;
|
|
|
|
NFSD_DEBUG(4, "in nfsrv_setattrdsrpc\n");
|
|
drpc = NULL;
|
|
if (mirrorcnt > 1)
|
|
tdrpc = drpc = malloc(sizeof(*drpc) * (mirrorcnt - 1), M_TEMP,
|
|
M_WAITOK);
|
|
|
|
/*
|
|
* Do the setattr RPC for every DS, using a separate kernel process
|
|
* for every DS except the last one.
|
|
*/
|
|
error = 0;
|
|
for (i = 0; i < mirrorcnt - 1; i++, tdrpc++) {
|
|
tdrpc->done = 0;
|
|
tdrpc->inprog = 0;
|
|
NFSBCOPY(fhp, &tdrpc->fh, sizeof(*fhp));
|
|
tdrpc->nmp = *nmpp;
|
|
tdrpc->vp = vp;
|
|
tdrpc->cred = cred;
|
|
tdrpc->p = p;
|
|
tdrpc->na = *nap;
|
|
tdrpc->err = 0;
|
|
ret = EIO;
|
|
if (nfs_pnfsiothreads != 0) {
|
|
ret = nfs_pnfsio(start_setattrdsdorpc, tdrpc);
|
|
NFSD_DEBUG(4, "nfsrv_setattrdsrpc: nfs_pnfsio=%d\n",
|
|
ret);
|
|
}
|
|
if (ret != 0) {
|
|
ret = nfsrv_setattrdsdorpc(fhp, cred, p, vp, *nmpp, nap,
|
|
&na);
|
|
if (nfsds_failerr(ret) && *failposp == -1)
|
|
*failposp = i;
|
|
else if (error == 0 && ret != 0)
|
|
error = ret;
|
|
}
|
|
nmpp++;
|
|
fhp++;
|
|
}
|
|
ret = nfsrv_setattrdsdorpc(fhp, cred, p, vp, *nmpp, nap, &na);
|
|
if (nfsds_failerr(ret) && *failposp == -1 && mirrorcnt > 1)
|
|
*failposp = mirrorcnt - 1;
|
|
else if (error == 0 && ret != 0)
|
|
error = ret;
|
|
if (error == 0)
|
|
error = nfsrv_setextattr(vp, &na, p);
|
|
NFSD_DEBUG(4, "nfsrv_setattrdsrpc: aft setextat=%d\n", error);
|
|
tdrpc = drpc;
|
|
timo = hz / 50; /* Wait for 20msec. */
|
|
if (timo < 1)
|
|
timo = 1;
|
|
for (i = 0; i < mirrorcnt - 1; i++, tdrpc++) {
|
|
/* Wait for RPCs on separate threads to complete. */
|
|
while (tdrpc->inprog != 0 && tdrpc->done == 0)
|
|
tsleep(&tdrpc->tsk, PVFS, "srvsads", timo);
|
|
if (nfsds_failerr(tdrpc->err) && *failposp == -1)
|
|
*failposp = i;
|
|
else if (error == 0 && tdrpc->err != 0)
|
|
error = tdrpc->err;
|
|
}
|
|
free(drpc, M_TEMP);
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* Do a Setattr of an NFSv4 ACL on the DS file.
|
|
*/
|
|
static int
|
|
nfsrv_setacldsdorpc(fhandle_t *fhp, struct ucred *cred, NFSPROC_T *p,
|
|
struct vnode *vp, struct nfsmount *nmp, struct acl *aclp)
|
|
{
|
|
struct nfsrv_descript *nd;
|
|
nfsv4stateid_t st;
|
|
nfsattrbit_t attrbits;
|
|
int error;
|
|
|
|
NFSD_DEBUG(4, "in nfsrv_setacldsdorpc\n");
|
|
nd = malloc(sizeof(*nd), M_TEMP, M_WAITOK | M_ZERO);
|
|
/*
|
|
* Use a stateid where other is an alternating 01010 pattern and
|
|
* seqid is 0xffffffff. This value is not defined as special by
|
|
* the RFC and is used by the FreeBSD NFS server to indicate an
|
|
* MDS->DS proxy operation.
|
|
*/
|
|
st.other[0] = 0x55555555;
|
|
st.other[1] = 0x55555555;
|
|
st.other[2] = 0x55555555;
|
|
st.seqid = 0xffffffff;
|
|
nfscl_reqstart(nd, NFSPROC_SETACL, nmp, (u_int8_t *)fhp, sizeof(*fhp),
|
|
NULL, NULL, 0, 0);
|
|
nfsm_stateidtom(nd, &st, NFSSTATEID_PUTSTATEID);
|
|
NFSZERO_ATTRBIT(&attrbits);
|
|
NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_ACL);
|
|
/*
|
|
* The "vp" argument to nfsv4_fillattr() is only used for vnode_type(),
|
|
* so passing in the metadata "vp" will be ok, since it is of
|
|
* the same type (VREG).
|
|
*/
|
|
nfsv4_fillattr(nd, NULL, vp, aclp, NULL, NULL, 0, &attrbits, NULL,
|
|
NULL, 0, 0, 0, 0, 0, NULL);
|
|
error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred,
|
|
NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL);
|
|
if (error != 0) {
|
|
free(nd, M_TEMP);
|
|
return (error);
|
|
}
|
|
NFSD_DEBUG(4, "nfsrv_setacldsdorpc: aft setaclrpc=%d\n",
|
|
nd->nd_repstat);
|
|
error = nd->nd_repstat;
|
|
m_freem(nd->nd_mrep);
|
|
free(nd, M_TEMP);
|
|
return (error);
|
|
}
|
|
|
|
struct nfsrvsetacldsdorpc {
|
|
int done;
|
|
int inprog;
|
|
struct task tsk;
|
|
fhandle_t fh;
|
|
struct nfsmount *nmp;
|
|
struct vnode *vp;
|
|
struct ucred *cred;
|
|
NFSPROC_T *p;
|
|
struct acl *aclp;
|
|
int err;
|
|
};
|
|
|
|
/*
|
|
* Start up the thread that will execute nfsrv_setacldsdorpc().
|
|
*/
|
|
static void
|
|
start_setacldsdorpc(void *arg, int pending)
|
|
{
|
|
struct nfsrvsetacldsdorpc *drpc;
|
|
|
|
drpc = (struct nfsrvsetacldsdorpc *)arg;
|
|
drpc->err = nfsrv_setacldsdorpc(&drpc->fh, drpc->cred, drpc->p,
|
|
drpc->vp, drpc->nmp, drpc->aclp);
|
|
drpc->done = 1;
|
|
}
|
|
|
|
static int
|
|
nfsrv_setacldsrpc(fhandle_t *fhp, struct ucred *cred, NFSPROC_T *p,
|
|
struct vnode *vp, struct nfsmount **nmpp, int mirrorcnt, struct acl *aclp,
|
|
int *failposp)
|
|
{
|
|
struct nfsrvsetacldsdorpc *drpc, *tdrpc;
|
|
int error, i, ret, timo;
|
|
|
|
NFSD_DEBUG(4, "in nfsrv_setacldsrpc\n");
|
|
drpc = NULL;
|
|
if (mirrorcnt > 1)
|
|
tdrpc = drpc = malloc(sizeof(*drpc) * (mirrorcnt - 1), M_TEMP,
|
|
M_WAITOK);
|
|
|
|
/*
|
|
* Do the setattr RPC for every DS, using a separate kernel process
|
|
* for every DS except the last one.
|
|
*/
|
|
error = 0;
|
|
for (i = 0; i < mirrorcnt - 1; i++, tdrpc++) {
|
|
tdrpc->done = 0;
|
|
tdrpc->inprog = 0;
|
|
NFSBCOPY(fhp, &tdrpc->fh, sizeof(*fhp));
|
|
tdrpc->nmp = *nmpp;
|
|
tdrpc->vp = vp;
|
|
tdrpc->cred = cred;
|
|
tdrpc->p = p;
|
|
tdrpc->aclp = aclp;
|
|
tdrpc->err = 0;
|
|
ret = EIO;
|
|
if (nfs_pnfsiothreads != 0) {
|
|
ret = nfs_pnfsio(start_setacldsdorpc, tdrpc);
|
|
NFSD_DEBUG(4, "nfsrv_setacldsrpc: nfs_pnfsio=%d\n",
|
|
ret);
|
|
}
|
|
if (ret != 0) {
|
|
ret = nfsrv_setacldsdorpc(fhp, cred, p, vp, *nmpp,
|
|
aclp);
|
|
if (nfsds_failerr(ret) && *failposp == -1)
|
|
*failposp = i;
|
|
else if (error == 0 && ret != 0)
|
|
error = ret;
|
|
}
|
|
nmpp++;
|
|
fhp++;
|
|
}
|
|
ret = nfsrv_setacldsdorpc(fhp, cred, p, vp, *nmpp, aclp);
|
|
if (nfsds_failerr(ret) && *failposp == -1 && mirrorcnt > 1)
|
|
*failposp = mirrorcnt - 1;
|
|
else if (error == 0 && ret != 0)
|
|
error = ret;
|
|
NFSD_DEBUG(4, "nfsrv_setacldsrpc: aft setextat=%d\n", error);
|
|
tdrpc = drpc;
|
|
timo = hz / 50; /* Wait for 20msec. */
|
|
if (timo < 1)
|
|
timo = 1;
|
|
for (i = 0; i < mirrorcnt - 1; i++, tdrpc++) {
|
|
/* Wait for RPCs on separate threads to complete. */
|
|
while (tdrpc->inprog != 0 && tdrpc->done == 0)
|
|
tsleep(&tdrpc->tsk, PVFS, "srvacds", timo);
|
|
if (nfsds_failerr(tdrpc->err) && *failposp == -1)
|
|
*failposp = i;
|
|
else if (error == 0 && tdrpc->err != 0)
|
|
error = tdrpc->err;
|
|
}
|
|
free(drpc, M_TEMP);
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* Getattr call to the DS for the Modify, Size and Change attributes.
|
|
*/
|
|
static int
|
|
nfsrv_getattrdsrpc(fhandle_t *fhp, struct ucred *cred, NFSPROC_T *p,
|
|
struct vnode *vp, struct nfsmount *nmp, struct nfsvattr *nap)
|
|
{
|
|
struct nfsrv_descript *nd;
|
|
int error;
|
|
nfsattrbit_t attrbits;
|
|
|
|
NFSD_DEBUG(4, "in nfsrv_getattrdsrpc\n");
|
|
nd = malloc(sizeof(*nd), M_TEMP, M_WAITOK | M_ZERO);
|
|
nfscl_reqstart(nd, NFSPROC_GETATTR, nmp, (u_int8_t *)fhp,
|
|
sizeof(fhandle_t), NULL, NULL, 0, 0);
|
|
NFSZERO_ATTRBIT(&attrbits);
|
|
NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_SIZE);
|
|
NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_CHANGE);
|
|
NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_TIMEACCESS);
|
|
NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_TIMEMODIFY);
|
|
(void) nfsrv_putattrbit(nd, &attrbits);
|
|
error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred,
|
|
NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL);
|
|
if (error != 0) {
|
|
free(nd, M_TEMP);
|
|
return (error);
|
|
}
|
|
NFSD_DEBUG(4, "nfsrv_getattrdsrpc: aft getattrrpc=%d\n",
|
|
nd->nd_repstat);
|
|
if (nd->nd_repstat == 0) {
|
|
error = nfsv4_loadattr(nd, NULL, nap, NULL, NULL, 0,
|
|
NULL, NULL, NULL, NULL, NULL, 0, NULL, NULL, NULL,
|
|
NULL, NULL);
|
|
/*
|
|
* We can only save the updated values in the extended
|
|
* attribute if the vp is exclusively locked.
|
|
* This should happen when any of the following operations
|
|
* occur on the vnode:
|
|
* Close, Delegreturn, LayoutCommit, LayoutReturn
|
|
* As such, the updated extended attribute should get saved
|
|
* before nfsrv_checkdsattr() returns 0 and allows the cached
|
|
* attributes to be returned without calling this function.
|
|
*/
|
|
if (error == 0 && VOP_ISLOCKED(vp) == LK_EXCLUSIVE) {
|
|
error = nfsrv_setextattr(vp, nap, p);
|
|
NFSD_DEBUG(4, "nfsrv_getattrdsrpc: aft setextat=%d\n",
|
|
error);
|
|
}
|
|
} else
|
|
error = nd->nd_repstat;
|
|
m_freem(nd->nd_mrep);
|
|
free(nd, M_TEMP);
|
|
NFSD_DEBUG(4, "nfsrv_getattrdsrpc error=%d\n", error);
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* Get the device id and file handle for a DS file.
|
|
*/
|
|
int
|
|
nfsrv_dsgetdevandfh(struct vnode *vp, NFSPROC_T *p, int *mirrorcntp,
|
|
fhandle_t *fhp, char *devid)
|
|
{
|
|
int buflen, error;
|
|
char *buf;
|
|
|
|
buflen = 1024;
|
|
buf = malloc(buflen, M_TEMP, M_WAITOK);
|
|
error = nfsrv_dsgetsockmnt(vp, 0, buf, &buflen, mirrorcntp, p, NULL,
|
|
fhp, devid, NULL, NULL, NULL, NULL, NULL, NULL);
|
|
free(buf, M_TEMP);
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* Do a Lookup against the DS for the filename.
|
|
*/
|
|
static int
|
|
nfsrv_pnfslookupds(struct vnode *vp, struct vnode *dvp, struct pnfsdsfile *pf,
|
|
struct vnode **nvpp, NFSPROC_T *p)
|
|
{
|
|
struct nameidata named;
|
|
struct ucred *tcred;
|
|
char *bufp;
|
|
u_long *hashp;
|
|
struct vnode *nvp;
|
|
int error;
|
|
|
|
tcred = newnfs_getcred();
|
|
named.ni_cnd.cn_nameiop = LOOKUP;
|
|
named.ni_cnd.cn_lkflags = LK_SHARED | LK_RETRY;
|
|
named.ni_cnd.cn_cred = tcred;
|
|
named.ni_cnd.cn_thread = p;
|
|
named.ni_cnd.cn_flags = ISLASTCN | LOCKPARENT | LOCKLEAF | SAVENAME;
|
|
nfsvno_setpathbuf(&named, &bufp, &hashp);
|
|
named.ni_cnd.cn_nameptr = bufp;
|
|
named.ni_cnd.cn_namelen = strlen(pf->dsf_filename);
|
|
strlcpy(bufp, pf->dsf_filename, NAME_MAX);
|
|
NFSD_DEBUG(4, "nfsrv_pnfslookupds: filename=%s\n", bufp);
|
|
error = VOP_LOOKUP(dvp, &nvp, &named.ni_cnd);
|
|
NFSD_DEBUG(4, "nfsrv_pnfslookupds: aft LOOKUP=%d\n", error);
|
|
NFSFREECRED(tcred);
|
|
nfsvno_relpathbuf(&named);
|
|
if (error == 0)
|
|
*nvpp = nvp;
|
|
NFSD_DEBUG(4, "eo nfsrv_pnfslookupds=%d\n", error);
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* Set the file handle to the correct one.
|
|
*/
|
|
static void
|
|
nfsrv_pnfssetfh(struct vnode *vp, struct pnfsdsfile *pf, char *devid,
|
|
char *fnamep, struct vnode *nvp, NFSPROC_T *p)
|
|
{
|
|
struct nfsnode *np;
|
|
int ret;
|
|
|
|
np = VTONFS(nvp);
|
|
NFSBCOPY(np->n_fhp->nfh_fh, &pf->dsf_fh, NFSX_MYFH);
|
|
/*
|
|
* We can only do a vn_set_extattr() if the vnode is exclusively
|
|
* locked and vn_start_write() has been done. If devid != NULL or
|
|
* fnamep != NULL or the vnode is shared locked, vn_start_write()
|
|
* may not have been done.
|
|
* If not done now, it will be done on a future call.
|
|
*/
|
|
if (devid == NULL && fnamep == NULL && NFSVOPISLOCKED(vp) ==
|
|
LK_EXCLUSIVE)
|
|
ret = vn_extattr_set(vp, IO_NODELOCKED,
|
|
EXTATTR_NAMESPACE_SYSTEM, "pnfsd.dsfile", sizeof(*pf),
|
|
(char *)pf, p);
|
|
NFSD_DEBUG(4, "eo nfsrv_pnfssetfh=%d\n", ret);
|
|
}
|
|
|
|
/*
|
|
* Cause RPCs waiting on "nmp" to fail. This is called for a DS mount point
|
|
* when the DS has failed.
|
|
*/
|
|
void
|
|
nfsrv_killrpcs(struct nfsmount *nmp)
|
|
{
|
|
|
|
/*
|
|
* Call newnfs_nmcancelreqs() to cause
|
|
* any RPCs in progress on the mount point to
|
|
* fail.
|
|
* This will cause any process waiting for an
|
|
* RPC to complete while holding a vnode lock
|
|
* on the mounted-on vnode (such as "df" or
|
|
* a non-forced "umount") to fail.
|
|
* This will unlock the mounted-on vnode so
|
|
* a forced dismount can succeed.
|
|
* The NFSMNTP_CANCELRPCS flag should be set when this function is
|
|
* called.
|
|
*/
|
|
newnfs_nmcancelreqs(nmp);
|
|
}
|
|
|
|
/*
|
|
* Sum up the statfs info for each of the DSs, so that the client will
|
|
* receive the total for all DSs.
|
|
*/
|
|
static int
|
|
nfsrv_pnfsstatfs(struct statfs *sf)
|
|
{
|
|
struct statfs *tsf;
|
|
struct nfsdevice *ds;
|
|
struct vnode **dvpp, **tdvpp, *dvp;
|
|
uint64_t tot;
|
|
int cnt, error = 0, i;
|
|
|
|
if (nfsrv_devidcnt <= 0)
|
|
return (ENXIO);
|
|
dvpp = mallocarray(nfsrv_devidcnt, sizeof(*dvpp), M_TEMP, M_WAITOK);
|
|
tsf = malloc(sizeof(*tsf), M_TEMP, M_WAITOK);
|
|
|
|
/* Get an array of the dvps for the DSs. */
|
|
tdvpp = dvpp;
|
|
i = 0;
|
|
NFSDDSLOCK();
|
|
TAILQ_FOREACH(ds, &nfsrv_devidhead, nfsdev_list) {
|
|
if (ds->nfsdev_nmp != NULL) {
|
|
if (++i > nfsrv_devidcnt)
|
|
break;
|
|
*tdvpp++ = ds->nfsdev_dvp;
|
|
}
|
|
}
|
|
NFSDDSUNLOCK();
|
|
cnt = i;
|
|
|
|
/* Do a VFS_STATFS() for each of the DSs and sum them up. */
|
|
tdvpp = dvpp;
|
|
for (i = 0; i < cnt && error == 0; i++) {
|
|
dvp = *tdvpp++;
|
|
error = VFS_STATFS(dvp->v_mount, tsf);
|
|
if (error == 0) {
|
|
if (sf->f_bsize == 0) {
|
|
if (tsf->f_bsize > 0)
|
|
sf->f_bsize = tsf->f_bsize;
|
|
else
|
|
sf->f_bsize = 8192;
|
|
}
|
|
if (tsf->f_blocks > 0) {
|
|
if (sf->f_bsize != tsf->f_bsize) {
|
|
tot = tsf->f_blocks * tsf->f_bsize;
|
|
sf->f_blocks += (tot / sf->f_bsize);
|
|
} else
|
|
sf->f_blocks += tsf->f_blocks;
|
|
}
|
|
if (tsf->f_bfree > 0) {
|
|
if (sf->f_bsize != tsf->f_bsize) {
|
|
tot = tsf->f_bfree * tsf->f_bsize;
|
|
sf->f_bfree += (tot / sf->f_bsize);
|
|
} else
|
|
sf->f_bfree += tsf->f_bfree;
|
|
}
|
|
if (tsf->f_bavail > 0) {
|
|
if (sf->f_bsize != tsf->f_bsize) {
|
|
tot = tsf->f_bavail * tsf->f_bsize;
|
|
sf->f_bavail += (tot / sf->f_bsize);
|
|
} else
|
|
sf->f_bavail += tsf->f_bavail;
|
|
}
|
|
}
|
|
}
|
|
free(tsf, M_TEMP);
|
|
free(dvpp, M_TEMP);
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* Set an NFSv4 acl.
|
|
*/
|
|
int
|
|
nfsrv_setacl(struct vnode *vp, NFSACL_T *aclp, struct ucred *cred, NFSPROC_T *p)
|
|
{
|
|
int error;
|
|
|
|
if (nfsrv_useacl == 0 || nfs_supportsnfsv4acls(vp) == 0) {
|
|
error = NFSERR_ATTRNOTSUPP;
|
|
goto out;
|
|
}
|
|
/*
|
|
* With NFSv4 ACLs, chmod(2) may need to add additional entries.
|
|
* Make sure it has enough room for that - splitting every entry
|
|
* into two and appending "canonical six" entries at the end.
|
|
* Cribbed out of kern/vfs_acl.c - Rick M.
|
|
*/
|
|
if (aclp->acl_cnt > (ACL_MAX_ENTRIES - 6) / 2) {
|
|
error = NFSERR_ATTRNOTSUPP;
|
|
goto out;
|
|
}
|
|
error = VOP_SETACL(vp, ACL_TYPE_NFS4, aclp, cred, p);
|
|
if (error == 0) {
|
|
error = nfsrv_dssetacl(vp, aclp, cred, p);
|
|
if (error == ENOENT)
|
|
error = 0;
|
|
}
|
|
|
|
out:
|
|
NFSEXITCODE(error);
|
|
return (error);
|
|
}
|
|
|
|
extern int (*nfsd_call_nfsd)(struct thread *, struct nfssvc_args *);
|
|
|
|
/*
|
|
* Called once to initialize data structures...
|
|
*/
|
|
static int
|
|
nfsd_modevent(module_t mod, int type, void *data)
|
|
{
|
|
int error = 0, i;
|
|
static int loaded = 0;
|
|
|
|
switch (type) {
|
|
case MOD_LOAD:
|
|
if (loaded)
|
|
goto out;
|
|
newnfs_portinit();
|
|
for (i = 0; i < NFSRVCACHE_HASHSIZE; i++) {
|
|
mtx_init(&nfsrchash_table[i].mtx, "nfsrtc", NULL,
|
|
MTX_DEF);
|
|
mtx_init(&nfsrcahash_table[i].mtx, "nfsrtca", NULL,
|
|
MTX_DEF);
|
|
}
|
|
mtx_init(&nfsrc_udpmtx, "nfsuc", NULL, MTX_DEF);
|
|
mtx_init(&nfs_v4root_mutex, "nfs4rt", NULL, MTX_DEF);
|
|
mtx_init(&nfsv4root_mnt.mnt_mtx, "nfs4mnt", NULL, MTX_DEF);
|
|
mtx_init(&nfsrv_dontlistlock_mtx, "nfs4dnl", NULL, MTX_DEF);
|
|
mtx_init(&nfsrv_recalllock_mtx, "nfs4rec", NULL, MTX_DEF);
|
|
lockinit(&nfsv4root_mnt.mnt_explock, PVFS, "explock", 0, 0);
|
|
nfsrvd_initcache();
|
|
nfsd_init();
|
|
NFSD_LOCK();
|
|
nfsrvd_init(0);
|
|
NFSD_UNLOCK();
|
|
nfsd_mntinit();
|
|
#ifdef VV_DISABLEDELEG
|
|
vn_deleg_ops.vndeleg_recall = nfsd_recalldelegation;
|
|
vn_deleg_ops.vndeleg_disable = nfsd_disabledelegation;
|
|
#endif
|
|
nfsd_call_servertimer = nfsrv_servertimer;
|
|
nfsd_call_nfsd = nfssvc_nfsd;
|
|
loaded = 1;
|
|
break;
|
|
|
|
case MOD_UNLOAD:
|
|
if (newnfs_numnfsd != 0) {
|
|
error = EBUSY;
|
|
break;
|
|
}
|
|
|
|
#ifdef VV_DISABLEDELEG
|
|
vn_deleg_ops.vndeleg_recall = NULL;
|
|
vn_deleg_ops.vndeleg_disable = NULL;
|
|
#endif
|
|
nfsd_call_servertimer = NULL;
|
|
nfsd_call_nfsd = NULL;
|
|
|
|
/* Clean out all NFSv4 state. */
|
|
nfsrv_throwawayallstate(curthread);
|
|
|
|
/* Clean the NFS server reply cache */
|
|
nfsrvd_cleancache();
|
|
|
|
/* Free up the krpc server pool. */
|
|
if (nfsrvd_pool != NULL)
|
|
svcpool_destroy(nfsrvd_pool);
|
|
|
|
/* and get rid of the locks */
|
|
for (i = 0; i < NFSRVCACHE_HASHSIZE; i++) {
|
|
mtx_destroy(&nfsrchash_table[i].mtx);
|
|
mtx_destroy(&nfsrcahash_table[i].mtx);
|
|
}
|
|
mtx_destroy(&nfsrc_udpmtx);
|
|
mtx_destroy(&nfs_v4root_mutex);
|
|
mtx_destroy(&nfsv4root_mnt.mnt_mtx);
|
|
mtx_destroy(&nfsrv_dontlistlock_mtx);
|
|
mtx_destroy(&nfsrv_recalllock_mtx);
|
|
for (i = 0; i < nfsrv_sessionhashsize; i++)
|
|
mtx_destroy(&nfssessionhash[i].mtx);
|
|
if (nfslayouthash != NULL) {
|
|
for (i = 0; i < nfsrv_layouthashsize; i++)
|
|
mtx_destroy(&nfslayouthash[i].mtx);
|
|
free(nfslayouthash, M_NFSDSESSION);
|
|
}
|
|
lockdestroy(&nfsv4root_mnt.mnt_explock);
|
|
free(nfsclienthash, M_NFSDCLIENT);
|
|
free(nfslockhash, M_NFSDLOCKFILE);
|
|
free(nfssessionhash, M_NFSDSESSION);
|
|
loaded = 0;
|
|
break;
|
|
default:
|
|
error = EOPNOTSUPP;
|
|
break;
|
|
}
|
|
|
|
out:
|
|
NFSEXITCODE(error);
|
|
return (error);
|
|
}
|
|
static moduledata_t nfsd_mod = {
|
|
"nfsd",
|
|
nfsd_modevent,
|
|
NULL,
|
|
};
|
|
DECLARE_MODULE(nfsd, nfsd_mod, SI_SUB_VFS, SI_ORDER_ANY);
|
|
|
|
/* So that loader and kldload(2) can find us, wherever we are.. */
|
|
MODULE_VERSION(nfsd, 1);
|
|
MODULE_DEPEND(nfsd, nfscommon, 1, 1, 1);
|
|
MODULE_DEPEND(nfsd, nfslock, 1, 1, 1);
|
|
MODULE_DEPEND(nfsd, nfslockd, 1, 1, 1);
|
|
MODULE_DEPEND(nfsd, krpc, 1, 1, 1);
|
|
MODULE_DEPEND(nfsd, nfssvc, 1, 1, 1);
|
|
|