a00a7b50af
Small modification where VOP_PATHCONF was being called directly. Reviewed by: rmacklem Approved by: zml (mentor) MFC after: 2 weeks
623 lines
17 KiB
C
623 lines
17 KiB
C
/*-
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* Copyright (c) 1989, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* Rick Macklem at The University of Guelph.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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/*
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* Functions that need to be different for different versions of BSD
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* kernel should be kept here, along with any global storage specific
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* to this BSD variant.
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*/
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#include <fs/nfs/nfsport.h>
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#include <sys/sysctl.h>
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#include <vm/vm.h>
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#include <vm/vm_object.h>
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#include <vm/vm_page.h>
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#include <vm/vm_param.h>
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#include <vm/vm_map.h>
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#include <vm/vm_kern.h>
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#include <vm/vm_extern.h>
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#include <vm/uma.h>
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#include <vm/uma_int.h>
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extern int nfscl_ticks;
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extern int nfsrv_nfsuserd;
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extern struct nfssockreq nfsrv_nfsuserdsock;
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extern void (*nfsd_call_recall)(struct vnode *, int, struct ucred *,
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struct thread *);
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extern int nfsrv_useacl;
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struct mount nfsv4root_mnt;
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int newnfs_numnfsd = 0;
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struct nfsstats newnfsstats;
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int nfs_numnfscbd = 0;
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char nfsv4_callbackaddr[INET6_ADDRSTRLEN];
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struct callout newnfsd_callout;
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void (*nfsd_call_servertimer)(void) = NULL;
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void (*ncl_call_invalcaches)(struct vnode *) = NULL;
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static int nfs_realign_test;
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static int nfs_realign_count;
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SYSCTL_NODE(_vfs, OID_AUTO, nfs, CTLFLAG_RW, 0, "New NFS filesystem");
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SYSCTL_INT(_vfs_nfs, OID_AUTO, realign_test, CTLFLAG_RW, &nfs_realign_test,
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0, "Number of realign tests done");
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SYSCTL_INT(_vfs_nfs, OID_AUTO, realign_count, CTLFLAG_RW, &nfs_realign_count,
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0, "Number of mbuf realignments done");
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SYSCTL_STRING(_vfs_nfs, OID_AUTO, callback_addr, CTLFLAG_RW,
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nfsv4_callbackaddr, sizeof(nfsv4_callbackaddr),
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"NFSv4 callback addr for server to use");
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/*
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* Defines for malloc
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* (Here for FreeBSD, since they allocate storage.)
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*/
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MALLOC_DEFINE(M_NEWNFSRVCACHE, "NFSD srvcache", "NFSD Server Request Cache");
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MALLOC_DEFINE(M_NEWNFSDCLIENT, "NFSD V4client", "NFSD V4 Client Id");
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MALLOC_DEFINE(M_NEWNFSDSTATE, "NFSD V4state",
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"NFSD V4 State (Openowner, Open, Lockowner, Delegation");
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MALLOC_DEFINE(M_NEWNFSDLOCK, "NFSD V4lock", "NFSD V4 byte range lock");
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MALLOC_DEFINE(M_NEWNFSDLOCKFILE, "NFSD lckfile", "NFSD Open/Lock file");
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MALLOC_DEFINE(M_NEWNFSSTRING, "NFSD string", "NFSD V4 long string");
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MALLOC_DEFINE(M_NEWNFSUSERGROUP, "NFSD usrgroup", "NFSD V4 User/group map");
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MALLOC_DEFINE(M_NEWNFSDREQ, "NFS req", "NFS request header");
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MALLOC_DEFINE(M_NEWNFSFH, "NFS fh", "NFS file handle");
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MALLOC_DEFINE(M_NEWNFSCLOWNER, "NFSCL owner", "NFSCL Open Owner");
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MALLOC_DEFINE(M_NEWNFSCLOPEN, "NFSCL open", "NFSCL Open");
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MALLOC_DEFINE(M_NEWNFSCLDELEG, "NFSCL deleg", "NFSCL Delegation");
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MALLOC_DEFINE(M_NEWNFSCLCLIENT, "NFSCL client", "NFSCL Client");
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MALLOC_DEFINE(M_NEWNFSCLLOCKOWNER, "NFSCL lckown", "NFSCL Lock Owner");
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MALLOC_DEFINE(M_NEWNFSCLLOCK, "NFSCL lck", "NFSCL Lock");
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MALLOC_DEFINE(M_NEWNFSV4NODE, "NEWNFSnode", "New nfs vnode");
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MALLOC_DEFINE(M_NEWNFSDIRECTIO, "NEWdirectio", "New nfs Direct IO buffer");
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MALLOC_DEFINE(M_NEWNFSDIROFF, "NFSCL diroffdiroff",
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"New NFS directory offset data");
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MALLOC_DEFINE(M_NEWNFSDROLLBACK, "NFSD rollback",
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"New NFS local lock rollback");
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/*
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* Definition of mutex locks.
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* newnfsd_mtx is used in nfsrvd_nfsd() to protect the nfs socket list
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* and assorted other nfsd structures.
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* Giant is used to protect the nfsd list and count, which is just
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* updated when nfsd's start/stop and is grabbed for nfsrvd_dorpc()
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* for the VFS ops.
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*/
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struct mtx newnfsd_mtx;
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struct mtx nfs_sockl_mutex;
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struct mtx nfs_state_mutex;
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struct mtx nfs_nameid_mutex;
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struct mtx nfs_req_mutex;
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struct mtx nfs_slock_mutex;
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/* local functions */
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static int nfssvc_call(struct thread *, struct nfssvc_args *, struct ucred *);
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#ifdef __NO_STRICT_ALIGNMENT
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/*
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* These architectures don't need re-alignment, so just return.
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*/
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void
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newnfs_realign(struct mbuf **pm)
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{
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return;
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}
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#else /* !__NO_STRICT_ALIGNMENT */
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/*
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* newnfs_realign:
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*
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* Check for badly aligned mbuf data and realign by copying the unaligned
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* portion of the data into a new mbuf chain and freeing the portions
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* of the old chain that were replaced.
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*
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* We cannot simply realign the data within the existing mbuf chain
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* because the underlying buffers may contain other rpc commands and
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* we cannot afford to overwrite them.
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*
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* We would prefer to avoid this situation entirely. The situation does
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* not occur with NFS/UDP and is supposed to only occassionally occur
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* with TCP. Use vfs.nfs.realign_count and realign_test to check this.
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*
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*/
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void
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newnfs_realign(struct mbuf **pm)
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{
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struct mbuf *m, *n;
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int off, space;
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++nfs_realign_test;
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while ((m = *pm) != NULL) {
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if ((m->m_len & 0x3) || (mtod(m, intptr_t) & 0x3)) {
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/*
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* NB: we can't depend on m_pkthdr.len to help us
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* decide what to do here. May not be worth doing
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* the m_length calculation as m_copyback will
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* expand the mbuf chain below as needed.
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*/
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space = m_length(m, NULL);
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if (space >= MINCLSIZE) {
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/* NB: m_copyback handles space > MCLBYTES */
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n = m_getcl(M_WAITOK, MT_DATA, 0);
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} else
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n = m_get(M_WAITOK, MT_DATA);
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if (n == NULL)
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return;
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/*
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* Align the remainder of the mbuf chain.
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*/
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n->m_len = 0;
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off = 0;
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while (m != NULL) {
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m_copyback(n, off, m->m_len, mtod(m, caddr_t));
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off += m->m_len;
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m = m->m_next;
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}
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m_freem(*pm);
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*pm = n;
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++nfs_realign_count;
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break;
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}
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pm = &m->m_next;
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}
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}
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#endif /* __NO_STRICT_ALIGNMENT */
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#ifdef notdef
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static void
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nfsrv_object_create(struct vnode *vp, struct thread *td)
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{
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if (vp == NULL || vp->v_type != VREG)
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return;
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(void) vfs_object_create(vp, td, td->td_ucred);
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}
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#endif
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/*
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* Look up a file name. Basically just initialize stuff and call namei().
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*/
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int
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nfsrv_lookupfilename(struct nameidata *ndp, char *fname, NFSPROC_T *p)
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{
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int error;
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NDINIT(ndp, LOOKUP, FOLLOW | LOCKLEAF | MPSAFE, UIO_USERSPACE, fname,
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p);
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error = namei(ndp);
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if (!error) {
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NDFREE(ndp, NDF_ONLY_PNBUF);
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}
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return (error);
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}
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/*
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* Copy NFS uid, gids to the cred structure.
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*/
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void
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newnfs_copycred(struct nfscred *nfscr, struct ucred *cr)
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{
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KASSERT(nfscr->nfsc_ngroups >= 0,
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("newnfs_copycred: negative nfsc_ngroups"));
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cr->cr_uid = nfscr->nfsc_uid;
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crsetgroups(cr, nfscr->nfsc_ngroups, nfscr->nfsc_groups);
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}
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/*
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* Map args from nfsmsleep() to msleep().
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*/
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int
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nfsmsleep(void *chan, void *mutex, int prio, const char *wmesg,
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struct timespec *ts)
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{
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u_int64_t nsecval;
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int error, timeo;
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if (ts) {
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timeo = hz * ts->tv_sec;
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nsecval = (u_int64_t)ts->tv_nsec;
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nsecval = ((nsecval * ((u_int64_t)hz)) + 500000000) /
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1000000000;
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timeo += (int)nsecval;
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} else {
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timeo = 0;
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}
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error = msleep(chan, (struct mtx *)mutex, prio, wmesg, timeo);
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return (error);
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}
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/*
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* Get the file system info for the server. For now, just assume FFS.
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*/
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void
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nfsvno_getfs(struct nfsfsinfo *sip, int isdgram)
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{
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int pref;
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/*
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* XXX
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* There should be file system VFS OP(s) to get this information.
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* For now, assume ufs.
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*/
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if (isdgram)
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pref = NFS_MAXDGRAMDATA;
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else
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pref = NFS_MAXDATA;
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sip->fs_rtmax = NFS_MAXDATA;
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sip->fs_rtpref = pref;
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sip->fs_rtmult = NFS_FABLKSIZE;
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sip->fs_wtmax = NFS_MAXDATA;
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sip->fs_wtpref = pref;
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sip->fs_wtmult = NFS_FABLKSIZE;
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sip->fs_dtpref = pref;
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sip->fs_maxfilesize = 0xffffffffffffffffull;
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sip->fs_timedelta.tv_sec = 0;
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sip->fs_timedelta.tv_nsec = 1;
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sip->fs_properties = (NFSV3FSINFO_LINK |
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NFSV3FSINFO_SYMLINK | NFSV3FSINFO_HOMOGENEOUS |
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NFSV3FSINFO_CANSETTIME);
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}
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/*
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* Do the pathconf vnode op.
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*/
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int
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nfsvno_pathconf(struct vnode *vp, int flag, register_t *retf,
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struct ucred *cred, struct thread *p)
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{
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int error;
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error = VOP_PATHCONF(vp, flag, retf);
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if (error == EOPNOTSUPP || error == EINVAL) {
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/*
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* Some file systems return EINVAL for name arguments not
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* supported and some return EOPNOTSUPP for this case.
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* So the NFSv3 Pathconf RPC doesn't fail for these cases,
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* just fake them.
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*/
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switch (flag) {
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case _PC_LINK_MAX:
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*retf = LINK_MAX;
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break;
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case _PC_NAME_MAX:
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*retf = NAME_MAX;
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break;
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case _PC_CHOWN_RESTRICTED:
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*retf = 1;
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break;
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case _PC_NO_TRUNC:
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*retf = 1;
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break;
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default:
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/*
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* Only happens if a _PC_xxx is added to the server,
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* but this isn't updated.
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*/
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*retf = 0;
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printf("nfsrvd pathconf flag=%d not supp\n", flag);
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};
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error = 0;
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}
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return (error);
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}
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/* Fake nfsrv_atroot. Just return 0 */
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int
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nfsrv_atroot(struct vnode *vp, long *retp)
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{
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return (0);
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}
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/*
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* Set the credentials to refer to root.
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* If only the various BSDen could agree on whether cr_gid is a separate
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* field or cr_groups[0]...
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*/
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void
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newnfs_setroot(struct ucred *cred)
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{
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cred->cr_uid = 0;
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cred->cr_groups[0] = 0;
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cred->cr_ngroups = 1;
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}
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/*
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* Get the client credential. Used for Renew and recovery.
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*/
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struct ucred *
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newnfs_getcred(void)
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{
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struct ucred *cred;
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struct thread *td = curthread;
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cred = crdup(td->td_ucred);
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newnfs_setroot(cred);
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return (cred);
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}
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/*
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* Nfs timer routine
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* Call the nfsd's timer function once/sec.
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*/
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void
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newnfs_timer(void *arg)
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{
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static time_t lasttime = 0;
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/*
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* Call the server timer, if set up.
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* The argument indicates if it is the next second and therefore
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* leases should be checked.
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*/
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if (lasttime != NFSD_MONOSEC) {
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lasttime = NFSD_MONOSEC;
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if (nfsd_call_servertimer != NULL)
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(*nfsd_call_servertimer)();
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}
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callout_reset(&newnfsd_callout, nfscl_ticks, newnfs_timer, NULL);
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}
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|
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/*
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* Sleep for a short period of time unless errval == NFSERR_GRACE, where
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* the sleep should be for 5 seconds.
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* Since lbolt doesn't exist in FreeBSD-CURRENT, just use a timeout on
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* an event that never gets a wakeup. Only return EINTR or 0.
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*/
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int
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nfs_catnap(int prio, int errval, const char *wmesg)
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{
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static int non_event;
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int ret;
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if (errval == NFSERR_GRACE)
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ret = tsleep(&non_event, prio, wmesg, 5 * hz);
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else
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ret = tsleep(&non_event, prio, wmesg, 1);
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if (ret != EINTR)
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ret = 0;
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return (ret);
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}
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|
|
/*
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* Get referral. For now, just fail.
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*/
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struct nfsreferral *
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nfsv4root_getreferral(struct vnode *vp, struct vnode *dvp, u_int32_t fileno)
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{
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return (NULL);
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}
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|
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static int
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nfssvc_nfscommon(struct thread *td, struct nfssvc_args *uap)
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{
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int error;
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error = nfssvc_call(td, uap, td->td_ucred);
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return (error);
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}
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|
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static int
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nfssvc_call(struct thread *p, struct nfssvc_args *uap, struct ucred *cred)
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{
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int error = EINVAL;
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struct nfsd_idargs nid;
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if (uap->flag & NFSSVC_IDNAME) {
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error = copyin(uap->argp, (caddr_t)&nid, sizeof (nid));
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if (error)
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return (error);
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error = nfssvc_idname(&nid);
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return (error);
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} else if (uap->flag & NFSSVC_GETSTATS) {
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error = copyout(&newnfsstats,
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CAST_USER_ADDR_T(uap->argp), sizeof (newnfsstats));
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if (error == 0) {
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if ((uap->flag & NFSSVC_ZEROCLTSTATS) != 0) {
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newnfsstats.attrcache_hits = 0;
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newnfsstats.attrcache_misses = 0;
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newnfsstats.lookupcache_hits = 0;
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newnfsstats.lookupcache_misses = 0;
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newnfsstats.direofcache_hits = 0;
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newnfsstats.direofcache_misses = 0;
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newnfsstats.accesscache_hits = 0;
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newnfsstats.accesscache_misses = 0;
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newnfsstats.biocache_reads = 0;
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newnfsstats.read_bios = 0;
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newnfsstats.read_physios = 0;
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newnfsstats.biocache_writes = 0;
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newnfsstats.write_bios = 0;
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newnfsstats.write_physios = 0;
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newnfsstats.biocache_readlinks = 0;
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newnfsstats.readlink_bios = 0;
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newnfsstats.biocache_readdirs = 0;
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newnfsstats.readdir_bios = 0;
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newnfsstats.rpcretries = 0;
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newnfsstats.rpcrequests = 0;
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newnfsstats.rpctimeouts = 0;
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newnfsstats.rpcunexpected = 0;
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newnfsstats.rpcinvalid = 0;
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bzero(newnfsstats.rpccnt,
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sizeof(newnfsstats.rpccnt));
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}
|
|
if ((uap->flag & NFSSVC_ZEROSRVSTATS) != 0) {
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newnfsstats.srvrpc_errs = 0;
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|
newnfsstats.srv_errs = 0;
|
|
newnfsstats.srvcache_inproghits = 0;
|
|
newnfsstats.srvcache_idemdonehits = 0;
|
|
newnfsstats.srvcache_nonidemdonehits = 0;
|
|
newnfsstats.srvcache_misses = 0;
|
|
newnfsstats.srvcache_tcppeak = 0;
|
|
newnfsstats.srvcache_size = 0;
|
|
newnfsstats.srvclients = 0;
|
|
newnfsstats.srvopenowners = 0;
|
|
newnfsstats.srvopens = 0;
|
|
newnfsstats.srvlockowners = 0;
|
|
newnfsstats.srvlocks = 0;
|
|
newnfsstats.srvdelegates = 0;
|
|
newnfsstats.clopenowners = 0;
|
|
newnfsstats.clopens = 0;
|
|
newnfsstats.cllockowners = 0;
|
|
newnfsstats.cllocks = 0;
|
|
newnfsstats.cldelegates = 0;
|
|
newnfsstats.cllocalopenowners = 0;
|
|
newnfsstats.cllocalopens = 0;
|
|
newnfsstats.cllocallockowners = 0;
|
|
newnfsstats.cllocallocks = 0;
|
|
bzero(newnfsstats.srvrpccnt,
|
|
sizeof(newnfsstats.srvrpccnt));
|
|
bzero(newnfsstats.cbrpccnt,
|
|
sizeof(newnfsstats.cbrpccnt));
|
|
}
|
|
}
|
|
return (error);
|
|
} else if (uap->flag & NFSSVC_NFSUSERDPORT) {
|
|
u_short sockport;
|
|
|
|
error = copyin(uap->argp, (caddr_t)&sockport,
|
|
sizeof (u_short));
|
|
if (!error)
|
|
error = nfsrv_nfsuserdport(sockport, p);
|
|
} else if (uap->flag & NFSSVC_NFSUSERDDELPORT) {
|
|
nfsrv_nfsuserddelport();
|
|
error = 0;
|
|
}
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* called by all three modevent routines, so that it gets things
|
|
* initialized soon enough.
|
|
*/
|
|
void
|
|
newnfs_portinit(void)
|
|
{
|
|
static int inited = 0;
|
|
|
|
if (inited)
|
|
return;
|
|
inited = 1;
|
|
/* Initialize SMP locks used by both client and server. */
|
|
mtx_init(&newnfsd_mtx, "newnfsd_mtx", NULL, MTX_DEF);
|
|
mtx_init(&nfs_state_mutex, "nfs_state_mutex", NULL, MTX_DEF);
|
|
}
|
|
|
|
/*
|
|
* Determine if the file system supports NFSv4 ACLs.
|
|
* Return 1 if it does, 0 otherwise.
|
|
*/
|
|
int
|
|
nfs_supportsnfsv4acls(struct vnode *vp)
|
|
{
|
|
int error;
|
|
register_t retval;
|
|
|
|
ASSERT_VOP_LOCKED(vp, "nfs supports nfsv4acls");
|
|
|
|
if (nfsrv_useacl == 0)
|
|
return (0);
|
|
error = nfsvno_pathconf(vp, _PC_ACL_NFS4, &retval, NULL, NULL);
|
|
if (error == 0 && retval != 0)
|
|
return (1);
|
|
return (0);
|
|
}
|
|
|
|
extern int (*nfsd_call_nfscommon)(struct thread *, struct nfssvc_args *);
|
|
|
|
/*
|
|
* Called once to initialize data structures...
|
|
*/
|
|
static int
|
|
nfscommon_modevent(module_t mod, int type, void *data)
|
|
{
|
|
int error = 0;
|
|
static int loaded = 0;
|
|
|
|
switch (type) {
|
|
case MOD_LOAD:
|
|
if (loaded)
|
|
return (0);
|
|
newnfs_portinit();
|
|
mtx_init(&nfs_nameid_mutex, "nfs_nameid_mutex", NULL, MTX_DEF);
|
|
mtx_init(&nfs_sockl_mutex, "nfs_sockl_mutex", NULL, MTX_DEF);
|
|
mtx_init(&nfs_slock_mutex, "nfs_slock_mutex", NULL, MTX_DEF);
|
|
mtx_init(&nfs_req_mutex, "nfs_req_mutex", NULL, MTX_DEF);
|
|
mtx_init(&nfsrv_nfsuserdsock.nr_mtx, "nfsuserd", NULL,
|
|
MTX_DEF);
|
|
callout_init(&newnfsd_callout, CALLOUT_MPSAFE);
|
|
newnfs_init();
|
|
nfsd_call_nfscommon = nfssvc_nfscommon;
|
|
loaded = 1;
|
|
break;
|
|
|
|
case MOD_UNLOAD:
|
|
if (newnfs_numnfsd != 0 || nfsrv_nfsuserd != 0 ||
|
|
nfs_numnfscbd != 0) {
|
|
error = EBUSY;
|
|
break;
|
|
}
|
|
|
|
nfsd_call_nfscommon = NULL;
|
|
callout_drain(&newnfsd_callout);
|
|
/* and get rid of the mutexes */
|
|
mtx_destroy(&nfs_nameid_mutex);
|
|
mtx_destroy(&newnfsd_mtx);
|
|
mtx_destroy(&nfs_state_mutex);
|
|
mtx_destroy(&nfs_sockl_mutex);
|
|
mtx_destroy(&nfs_slock_mutex);
|
|
mtx_destroy(&nfs_req_mutex);
|
|
mtx_destroy(&nfsrv_nfsuserdsock.nr_mtx);
|
|
loaded = 0;
|
|
break;
|
|
default:
|
|
error = EOPNOTSUPP;
|
|
break;
|
|
}
|
|
return error;
|
|
}
|
|
static moduledata_t nfscommon_mod = {
|
|
"nfscommon",
|
|
nfscommon_modevent,
|
|
NULL,
|
|
};
|
|
DECLARE_MODULE(nfscommon, nfscommon_mod, SI_SUB_VFS, SI_ORDER_ANY);
|
|
|
|
/* So that loader and kldload(2) can find us, wherever we are.. */
|
|
MODULE_VERSION(nfscommon, 1);
|
|
MODULE_DEPEND(nfscommon, nfssvc, 1, 1, 1);
|
|
MODULE_DEPEND(nfscommon, krpc, 1, 1, 1);
|
|
|