8b5e8315a7
in the new NFS client so that a forced dismount doesn't get stuck in the VFS_SYNC() call that happens before VFS_UNMOUNT() in dounmount(). Additional changes are needed before forced dismounts will work. MFC after: 2 weeks
1596 lines
45 KiB
C
1596 lines
45 KiB
C
/*-
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* Copyright (c) 1989, 1993, 1995
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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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* from nfs_vfsops.c 8.12 (Berkeley) 5/20/95
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include "opt_bootp.h"
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#include "opt_nfsroot.h"
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <sys/bio.h>
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#include <sys/buf.h>
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#include <sys/clock.h>
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#include <sys/jail.h>
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#include <sys/limits.h>
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#include <sys/lock.h>
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#include <sys/malloc.h>
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#include <sys/mbuf.h>
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#include <sys/module.h>
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#include <sys/mount.h>
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#include <sys/proc.h>
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#include <sys/socket.h>
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#include <sys/socketvar.h>
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#include <sys/sockio.h>
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#include <sys/sysctl.h>
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#include <sys/vnode.h>
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#include <sys/signalvar.h>
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#include <vm/vm.h>
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#include <vm/vm_extern.h>
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#include <vm/uma.h>
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#include <net/if.h>
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#include <net/route.h>
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#include <netinet/in.h>
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#include <fs/nfs/nfsport.h>
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#include <fs/nfsclient/nfsnode.h>
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#include <fs/nfsclient/nfsmount.h>
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#include <fs/nfsclient/nfs.h>
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#include <nfs/nfsdiskless.h>
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FEATURE(nfscl, "NFSv4 client");
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extern int nfscl_ticks;
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extern struct timeval nfsboottime;
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extern struct nfsstats newnfsstats;
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extern int nfsrv_useacl;
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MALLOC_DEFINE(M_NEWNFSREQ, "newnfsclient_req", "New NFS request header");
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MALLOC_DEFINE(M_NEWNFSMNT, "newnfsmnt", "New NFS mount struct");
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SYSCTL_DECL(_vfs_nfs);
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static int nfs_ip_paranoia = 1;
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SYSCTL_INT(_vfs_nfs, OID_AUTO, nfs_ip_paranoia, CTLFLAG_RW,
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&nfs_ip_paranoia, 0, "");
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static int nfs_tprintf_initial_delay = NFS_TPRINTF_INITIAL_DELAY;
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SYSCTL_INT(_vfs_nfs, NFS_TPRINTF_INITIAL_DELAY,
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downdelayinitial, CTLFLAG_RW, &nfs_tprintf_initial_delay, 0, "");
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/* how long between console messages "nfs server foo not responding" */
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static int nfs_tprintf_delay = NFS_TPRINTF_DELAY;
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SYSCTL_INT(_vfs_nfs, NFS_TPRINTF_DELAY,
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downdelayinterval, CTLFLAG_RW, &nfs_tprintf_delay, 0, "");
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static int nfs_mountroot(struct mount *);
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static void nfs_sec_name(char *, int *);
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static void nfs_decode_args(struct mount *mp, struct nfsmount *nmp,
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struct nfs_args *argp, const char *, struct ucred *,
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struct thread *);
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static int mountnfs(struct nfs_args *, struct mount *,
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struct sockaddr *, char *, u_char *, int, u_char *, int,
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u_char *, int, struct vnode **, struct ucred *,
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struct thread *, int);
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static void nfs_getnlminfo(struct vnode *, uint8_t *, size_t *,
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struct sockaddr_storage *, int *, off_t *,
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struct timeval *);
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static vfs_mount_t nfs_mount;
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static vfs_cmount_t nfs_cmount;
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static vfs_unmount_t nfs_unmount;
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static vfs_root_t nfs_root;
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static vfs_statfs_t nfs_statfs;
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static vfs_sync_t nfs_sync;
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static vfs_sysctl_t nfs_sysctl;
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/*
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* nfs vfs operations.
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*/
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static struct vfsops nfs_vfsops = {
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.vfs_init = ncl_init,
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.vfs_mount = nfs_mount,
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.vfs_cmount = nfs_cmount,
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.vfs_root = nfs_root,
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.vfs_statfs = nfs_statfs,
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.vfs_sync = nfs_sync,
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.vfs_uninit = ncl_uninit,
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.vfs_unmount = nfs_unmount,
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.vfs_sysctl = nfs_sysctl,
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};
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VFS_SET(nfs_vfsops, nfs, VFCF_NETWORK);
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/* So that loader and kldload(2) can find us, wherever we are.. */
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MODULE_VERSION(nfs, 1);
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MODULE_DEPEND(nfs, nfscommon, 1, 1, 1);
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MODULE_DEPEND(nfs, krpc, 1, 1, 1);
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MODULE_DEPEND(nfs, nfssvc, 1, 1, 1);
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MODULE_DEPEND(nfs, nfslock, 1, 1, 1);
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/*
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* This structure is now defined in sys/nfs/nfs_diskless.c so that it
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* can be shared by both NFS clients. It is declared here so that it
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* will be defined for kernels built without NFS_ROOT, although it
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* isn't used in that case.
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*/
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#if !defined(NFS_ROOT) && !defined(NFSCLIENT)
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struct nfs_diskless nfs_diskless = { { { 0 } } };
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struct nfsv3_diskless nfsv3_diskless = { { { 0 } } };
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int nfs_diskless_valid = 0;
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#endif
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SYSCTL_INT(_vfs_nfs, OID_AUTO, diskless_valid, CTLFLAG_RD,
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&nfs_diskless_valid, 0,
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"Has the diskless struct been filled correctly");
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SYSCTL_STRING(_vfs_nfs, OID_AUTO, diskless_rootpath, CTLFLAG_RD,
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nfsv3_diskless.root_hostnam, 0, "Path to nfs root");
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SYSCTL_OPAQUE(_vfs_nfs, OID_AUTO, diskless_rootaddr, CTLFLAG_RD,
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&nfsv3_diskless.root_saddr, sizeof(nfsv3_diskless.root_saddr),
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"%Ssockaddr_in", "Diskless root nfs address");
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void newnfsargs_ntoh(struct nfs_args *);
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static int nfs_mountdiskless(char *,
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struct sockaddr_in *, struct nfs_args *,
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struct thread *, struct vnode **, struct mount *);
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static void nfs_convert_diskless(void);
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static void nfs_convert_oargs(struct nfs_args *args,
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struct onfs_args *oargs);
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int
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newnfs_iosize(struct nfsmount *nmp)
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{
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int iosize, maxio;
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/* First, set the upper limit for iosize */
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if (nmp->nm_flag & NFSMNT_NFSV4) {
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maxio = NFS_MAXBSIZE;
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} else if (nmp->nm_flag & NFSMNT_NFSV3) {
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if (nmp->nm_sotype == SOCK_DGRAM)
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maxio = NFS_MAXDGRAMDATA;
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else
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maxio = NFS_MAXBSIZE;
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} else {
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maxio = NFS_V2MAXDATA;
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}
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if (nmp->nm_rsize > maxio || nmp->nm_rsize == 0)
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nmp->nm_rsize = maxio;
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if (nmp->nm_rsize > MAXBSIZE)
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nmp->nm_rsize = MAXBSIZE;
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if (nmp->nm_readdirsize > maxio || nmp->nm_readdirsize == 0)
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nmp->nm_readdirsize = maxio;
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if (nmp->nm_readdirsize > nmp->nm_rsize)
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nmp->nm_readdirsize = nmp->nm_rsize;
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if (nmp->nm_wsize > maxio || nmp->nm_wsize == 0)
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nmp->nm_wsize = maxio;
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if (nmp->nm_wsize > MAXBSIZE)
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nmp->nm_wsize = MAXBSIZE;
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/*
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* Calculate the size used for io buffers. Use the larger
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* of the two sizes to minimise nfs requests but make sure
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* that it is at least one VM page to avoid wasting buffer
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* space.
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*/
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iosize = imax(nmp->nm_rsize, nmp->nm_wsize);
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iosize = imax(iosize, PAGE_SIZE);
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nmp->nm_mountp->mnt_stat.f_iosize = iosize;
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return (iosize);
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}
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static void
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nfs_convert_oargs(struct nfs_args *args, struct onfs_args *oargs)
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{
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args->version = NFS_ARGSVERSION;
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args->addr = oargs->addr;
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args->addrlen = oargs->addrlen;
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args->sotype = oargs->sotype;
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args->proto = oargs->proto;
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args->fh = oargs->fh;
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args->fhsize = oargs->fhsize;
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args->flags = oargs->flags;
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args->wsize = oargs->wsize;
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args->rsize = oargs->rsize;
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args->readdirsize = oargs->readdirsize;
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args->timeo = oargs->timeo;
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args->retrans = oargs->retrans;
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args->readahead = oargs->readahead;
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args->hostname = oargs->hostname;
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}
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static void
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nfs_convert_diskless(void)
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{
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bcopy(&nfs_diskless.myif, &nfsv3_diskless.myif,
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sizeof(struct ifaliasreq));
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bcopy(&nfs_diskless.mygateway, &nfsv3_diskless.mygateway,
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sizeof(struct sockaddr_in));
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nfs_convert_oargs(&nfsv3_diskless.root_args,&nfs_diskless.root_args);
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if (nfsv3_diskless.root_args.flags & NFSMNT_NFSV3) {
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nfsv3_diskless.root_fhsize = NFSX_MYFH;
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bcopy(nfs_diskless.root_fh, nfsv3_diskless.root_fh, NFSX_MYFH);
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} else {
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nfsv3_diskless.root_fhsize = NFSX_V2FH;
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bcopy(nfs_diskless.root_fh, nfsv3_diskless.root_fh, NFSX_V2FH);
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}
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bcopy(&nfs_diskless.root_saddr,&nfsv3_diskless.root_saddr,
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sizeof(struct sockaddr_in));
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bcopy(nfs_diskless.root_hostnam, nfsv3_diskless.root_hostnam, MNAMELEN);
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nfsv3_diskless.root_time = nfs_diskless.root_time;
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bcopy(nfs_diskless.my_hostnam, nfsv3_diskless.my_hostnam,
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MAXHOSTNAMELEN);
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nfs_diskless_valid = 3;
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}
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/*
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* nfs statfs call
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*/
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static int
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nfs_statfs(struct mount *mp, struct statfs *sbp)
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{
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struct vnode *vp;
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struct thread *td;
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struct nfsmount *nmp = VFSTONFS(mp);
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struct nfsvattr nfsva;
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struct nfsfsinfo fs;
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struct nfsstatfs sb;
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int error = 0, attrflag, gotfsinfo = 0, ret;
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struct nfsnode *np;
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td = curthread;
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error = vfs_busy(mp, MBF_NOWAIT);
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if (error)
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return (error);
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error = ncl_nget(mp, nmp->nm_fh, nmp->nm_fhsize, &np, LK_EXCLUSIVE);
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if (error) {
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vfs_unbusy(mp);
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return (error);
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}
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vp = NFSTOV(np);
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mtx_lock(&nmp->nm_mtx);
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if (NFSHASNFSV3(nmp) && !NFSHASGOTFSINFO(nmp)) {
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mtx_unlock(&nmp->nm_mtx);
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error = nfsrpc_fsinfo(vp, &fs, td->td_ucred, td, &nfsva,
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&attrflag, NULL);
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if (!error)
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gotfsinfo = 1;
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} else
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mtx_unlock(&nmp->nm_mtx);
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if (!error)
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error = nfsrpc_statfs(vp, &sb, &fs, td->td_ucred, td, &nfsva,
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&attrflag, NULL);
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if (attrflag == 0) {
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ret = nfsrpc_getattrnovp(nmp, nmp->nm_fh, nmp->nm_fhsize, 1,
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td->td_ucred, td, &nfsva, NULL);
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if (ret) {
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/*
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* Just set default values to get things going.
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*/
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NFSBZERO((caddr_t)&nfsva, sizeof (struct nfsvattr));
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nfsva.na_vattr.va_type = VDIR;
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nfsva.na_vattr.va_mode = 0777;
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nfsva.na_vattr.va_nlink = 100;
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nfsva.na_vattr.va_uid = (uid_t)0;
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nfsva.na_vattr.va_gid = (gid_t)0;
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nfsva.na_vattr.va_fileid = 2;
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nfsva.na_vattr.va_gen = 1;
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nfsva.na_vattr.va_blocksize = NFS_FABLKSIZE;
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nfsva.na_vattr.va_size = 512 * 1024;
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}
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}
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(void) nfscl_loadattrcache(&vp, &nfsva, NULL, NULL, 0, 1);
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if (!error) {
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mtx_lock(&nmp->nm_mtx);
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if (gotfsinfo || (nmp->nm_flag & NFSMNT_NFSV4))
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nfscl_loadfsinfo(nmp, &fs);
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nfscl_loadsbinfo(nmp, &sb, sbp);
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sbp->f_iosize = newnfs_iosize(nmp);
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mtx_unlock(&nmp->nm_mtx);
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if (sbp != &mp->mnt_stat) {
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bcopy(mp->mnt_stat.f_mntonname, sbp->f_mntonname, MNAMELEN);
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bcopy(mp->mnt_stat.f_mntfromname, sbp->f_mntfromname, MNAMELEN);
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}
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strncpy(&sbp->f_fstypename[0], mp->mnt_vfc->vfc_name, MFSNAMELEN);
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} else if (NFS_ISV4(vp)) {
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error = nfscl_maperr(td, error, (uid_t)0, (gid_t)0);
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}
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vput(vp);
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vfs_unbusy(mp);
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return (error);
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}
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|
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/*
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* nfs version 3 fsinfo rpc call
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*/
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int
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ncl_fsinfo(struct nfsmount *nmp, struct vnode *vp, struct ucred *cred,
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struct thread *td)
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{
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struct nfsfsinfo fs;
|
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struct nfsvattr nfsva;
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int error, attrflag;
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error = nfsrpc_fsinfo(vp, &fs, cred, td, &nfsva, &attrflag, NULL);
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if (!error) {
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if (attrflag)
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(void) nfscl_loadattrcache(&vp, &nfsva, NULL, NULL, 0,
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1);
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mtx_lock(&nmp->nm_mtx);
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nfscl_loadfsinfo(nmp, &fs);
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mtx_unlock(&nmp->nm_mtx);
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}
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return (error);
|
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}
|
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|
|
/*
|
|
* Mount a remote root fs via. nfs. This depends on the info in the
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|
* nfs_diskless structure that has been filled in properly by some primary
|
|
* bootstrap.
|
|
* It goes something like this:
|
|
* - do enough of "ifconfig" by calling ifioctl() so that the system
|
|
* can talk to the server
|
|
* - If nfs_diskless.mygateway is filled in, use that address as
|
|
* a default gateway.
|
|
* - build the rootfs mount point and call mountnfs() to do the rest.
|
|
*
|
|
* It is assumed to be safe to read, modify, and write the nfsv3_diskless
|
|
* structure, as well as other global NFS client variables here, as
|
|
* nfs_mountroot() will be called once in the boot before any other NFS
|
|
* client activity occurs.
|
|
*/
|
|
static int
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nfs_mountroot(struct mount *mp)
|
|
{
|
|
struct thread *td = curthread;
|
|
struct nfsv3_diskless *nd = &nfsv3_diskless;
|
|
struct socket *so;
|
|
struct vnode *vp;
|
|
struct ifreq ir;
|
|
int error;
|
|
u_long l;
|
|
char buf[128];
|
|
char *cp;
|
|
|
|
#if defined(BOOTP_NFSROOT) && defined(BOOTP)
|
|
bootpc_init(); /* use bootp to get nfs_diskless filled in */
|
|
#elif defined(NFS_ROOT)
|
|
nfs_setup_diskless();
|
|
#endif
|
|
|
|
if (nfs_diskless_valid == 0)
|
|
return (-1);
|
|
if (nfs_diskless_valid == 1)
|
|
nfs_convert_diskless();
|
|
|
|
/*
|
|
* XXX splnet, so networks will receive...
|
|
*/
|
|
splnet();
|
|
|
|
/*
|
|
* Do enough of ifconfig(8) so that the critical net interface can
|
|
* talk to the server.
|
|
*/
|
|
error = socreate(nd->myif.ifra_addr.sa_family, &so, nd->root_args.sotype, 0,
|
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td->td_ucred, td);
|
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if (error)
|
|
panic("nfs_mountroot: socreate(%04x): %d",
|
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nd->myif.ifra_addr.sa_family, error);
|
|
|
|
#if 0 /* XXX Bad idea */
|
|
/*
|
|
* We might not have been told the right interface, so we pass
|
|
* over the first ten interfaces of the same kind, until we get
|
|
* one of them configured.
|
|
*/
|
|
|
|
for (i = strlen(nd->myif.ifra_name) - 1;
|
|
nd->myif.ifra_name[i] >= '0' &&
|
|
nd->myif.ifra_name[i] <= '9';
|
|
nd->myif.ifra_name[i] ++) {
|
|
error = ifioctl(so, SIOCAIFADDR, (caddr_t)&nd->myif, td);
|
|
if(!error)
|
|
break;
|
|
}
|
|
#endif
|
|
error = ifioctl(so, SIOCAIFADDR, (caddr_t)&nd->myif, td);
|
|
if (error)
|
|
panic("nfs_mountroot: SIOCAIFADDR: %d", error);
|
|
if ((cp = getenv("boot.netif.mtu")) != NULL) {
|
|
ir.ifr_mtu = strtol(cp, NULL, 10);
|
|
bcopy(nd->myif.ifra_name, ir.ifr_name, IFNAMSIZ);
|
|
freeenv(cp);
|
|
error = ifioctl(so, SIOCSIFMTU, (caddr_t)&ir, td);
|
|
if (error)
|
|
printf("nfs_mountroot: SIOCSIFMTU: %d", error);
|
|
}
|
|
soclose(so);
|
|
|
|
/*
|
|
* If the gateway field is filled in, set it as the default route.
|
|
* Note that pxeboot will set a default route of 0 if the route
|
|
* is not set by the DHCP server. Check also for a value of 0
|
|
* to avoid panicking inappropriately in that situation.
|
|
*/
|
|
if (nd->mygateway.sin_len != 0 &&
|
|
nd->mygateway.sin_addr.s_addr != 0) {
|
|
struct sockaddr_in mask, sin;
|
|
|
|
bzero((caddr_t)&mask, sizeof(mask));
|
|
sin = mask;
|
|
sin.sin_family = AF_INET;
|
|
sin.sin_len = sizeof(sin);
|
|
/* XXX MRT use table 0 for this sort of thing */
|
|
CURVNET_SET(TD_TO_VNET(td));
|
|
error = rtrequest(RTM_ADD, (struct sockaddr *)&sin,
|
|
(struct sockaddr *)&nd->mygateway,
|
|
(struct sockaddr *)&mask,
|
|
RTF_UP | RTF_GATEWAY, NULL);
|
|
CURVNET_RESTORE();
|
|
if (error)
|
|
panic("nfs_mountroot: RTM_ADD: %d", error);
|
|
}
|
|
|
|
/*
|
|
* Create the rootfs mount point.
|
|
*/
|
|
nd->root_args.fh = nd->root_fh;
|
|
nd->root_args.fhsize = nd->root_fhsize;
|
|
l = ntohl(nd->root_saddr.sin_addr.s_addr);
|
|
snprintf(buf, sizeof(buf), "%ld.%ld.%ld.%ld:%s",
|
|
(l >> 24) & 0xff, (l >> 16) & 0xff,
|
|
(l >> 8) & 0xff, (l >> 0) & 0xff, nd->root_hostnam);
|
|
printf("NFS ROOT: %s\n", buf);
|
|
nd->root_args.hostname = buf;
|
|
if ((error = nfs_mountdiskless(buf,
|
|
&nd->root_saddr, &nd->root_args, td, &vp, mp)) != 0) {
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* This is not really an nfs issue, but it is much easier to
|
|
* set hostname here and then let the "/etc/rc.xxx" files
|
|
* mount the right /var based upon its preset value.
|
|
*/
|
|
mtx_lock(&prison0.pr_mtx);
|
|
strlcpy(prison0.pr_hostname, nd->my_hostnam,
|
|
sizeof(prison0.pr_hostname));
|
|
mtx_unlock(&prison0.pr_mtx);
|
|
inittodr(ntohl(nd->root_time));
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Internal version of mount system call for diskless setup.
|
|
*/
|
|
static int
|
|
nfs_mountdiskless(char *path,
|
|
struct sockaddr_in *sin, struct nfs_args *args, struct thread *td,
|
|
struct vnode **vpp, struct mount *mp)
|
|
{
|
|
struct sockaddr *nam;
|
|
int dirlen, error;
|
|
char *dirpath;
|
|
|
|
/*
|
|
* Find the directory path in "path", which also has the server's
|
|
* name/ip address in it.
|
|
*/
|
|
dirpath = strchr(path, ':');
|
|
if (dirpath != NULL)
|
|
dirlen = strlen(++dirpath);
|
|
else
|
|
dirlen = 0;
|
|
nam = sodupsockaddr((struct sockaddr *)sin, M_WAITOK);
|
|
if ((error = mountnfs(args, mp, nam, path, NULL, 0, dirpath, dirlen,
|
|
NULL, 0, vpp, td->td_ucred, td, NFS_DEFAULT_NEGNAMETIMEO)) != 0) {
|
|
printf("nfs_mountroot: mount %s on /: %d\n", path, error);
|
|
return (error);
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
static void
|
|
nfs_sec_name(char *sec, int *flagsp)
|
|
{
|
|
if (!strcmp(sec, "krb5"))
|
|
*flagsp |= NFSMNT_KERB;
|
|
else if (!strcmp(sec, "krb5i"))
|
|
*flagsp |= (NFSMNT_KERB | NFSMNT_INTEGRITY);
|
|
else if (!strcmp(sec, "krb5p"))
|
|
*flagsp |= (NFSMNT_KERB | NFSMNT_PRIVACY);
|
|
}
|
|
|
|
static void
|
|
nfs_decode_args(struct mount *mp, struct nfsmount *nmp, struct nfs_args *argp,
|
|
const char *hostname, struct ucred *cred, struct thread *td)
|
|
{
|
|
int s;
|
|
int adjsock;
|
|
char *p;
|
|
|
|
s = splnet();
|
|
|
|
/*
|
|
* Set read-only flag if requested; otherwise, clear it if this is
|
|
* an update. If this is not an update, then either the read-only
|
|
* flag is already clear, or this is a root mount and it was set
|
|
* intentionally at some previous point.
|
|
*/
|
|
if (vfs_getopt(mp->mnt_optnew, "ro", NULL, NULL) == 0) {
|
|
MNT_ILOCK(mp);
|
|
mp->mnt_flag |= MNT_RDONLY;
|
|
MNT_IUNLOCK(mp);
|
|
} else if (mp->mnt_flag & MNT_UPDATE) {
|
|
MNT_ILOCK(mp);
|
|
mp->mnt_flag &= ~MNT_RDONLY;
|
|
MNT_IUNLOCK(mp);
|
|
}
|
|
|
|
/*
|
|
* Silently clear NFSMNT_NOCONN if it's a TCP mount, it makes
|
|
* no sense in that context. Also, set up appropriate retransmit
|
|
* and soft timeout behavior.
|
|
*/
|
|
if (argp->sotype == SOCK_STREAM) {
|
|
nmp->nm_flag &= ~NFSMNT_NOCONN;
|
|
nmp->nm_timeo = NFS_MAXTIMEO;
|
|
if ((argp->flags & NFSMNT_NFSV4) != 0)
|
|
nmp->nm_retry = INT_MAX;
|
|
else
|
|
nmp->nm_retry = NFS_RETRANS_TCP;
|
|
}
|
|
|
|
/* Also clear RDIRPLUS if NFSv2, it crashes some servers */
|
|
if ((argp->flags & (NFSMNT_NFSV3 | NFSMNT_NFSV4)) == 0) {
|
|
argp->flags &= ~NFSMNT_RDIRPLUS;
|
|
nmp->nm_flag &= ~NFSMNT_RDIRPLUS;
|
|
}
|
|
|
|
/* Clear NFSMNT_RESVPORT for NFSv4, since it is not required. */
|
|
if ((argp->flags & NFSMNT_NFSV4) != 0) {
|
|
argp->flags &= ~NFSMNT_RESVPORT;
|
|
nmp->nm_flag &= ~NFSMNT_RESVPORT;
|
|
}
|
|
|
|
/* Re-bind if rsrvd port requested and wasn't on one */
|
|
adjsock = !(nmp->nm_flag & NFSMNT_RESVPORT)
|
|
&& (argp->flags & NFSMNT_RESVPORT);
|
|
/* Also re-bind if we're switching to/from a connected UDP socket */
|
|
adjsock |= ((nmp->nm_flag & NFSMNT_NOCONN) !=
|
|
(argp->flags & NFSMNT_NOCONN));
|
|
|
|
/* Update flags atomically. Don't change the lock bits. */
|
|
nmp->nm_flag = argp->flags | nmp->nm_flag;
|
|
splx(s);
|
|
|
|
if ((argp->flags & NFSMNT_TIMEO) && argp->timeo > 0) {
|
|
nmp->nm_timeo = (argp->timeo * NFS_HZ + 5) / 10;
|
|
if (nmp->nm_timeo < NFS_MINTIMEO)
|
|
nmp->nm_timeo = NFS_MINTIMEO;
|
|
else if (nmp->nm_timeo > NFS_MAXTIMEO)
|
|
nmp->nm_timeo = NFS_MAXTIMEO;
|
|
}
|
|
|
|
if ((argp->flags & NFSMNT_RETRANS) && argp->retrans > 1) {
|
|
nmp->nm_retry = argp->retrans;
|
|
if (nmp->nm_retry > NFS_MAXREXMIT)
|
|
nmp->nm_retry = NFS_MAXREXMIT;
|
|
}
|
|
|
|
if ((argp->flags & NFSMNT_WSIZE) && argp->wsize > 0) {
|
|
nmp->nm_wsize = argp->wsize;
|
|
/* Round down to multiple of blocksize */
|
|
nmp->nm_wsize &= ~(NFS_FABLKSIZE - 1);
|
|
if (nmp->nm_wsize <= 0)
|
|
nmp->nm_wsize = NFS_FABLKSIZE;
|
|
}
|
|
|
|
if ((argp->flags & NFSMNT_RSIZE) && argp->rsize > 0) {
|
|
nmp->nm_rsize = argp->rsize;
|
|
/* Round down to multiple of blocksize */
|
|
nmp->nm_rsize &= ~(NFS_FABLKSIZE - 1);
|
|
if (nmp->nm_rsize <= 0)
|
|
nmp->nm_rsize = NFS_FABLKSIZE;
|
|
}
|
|
|
|
if ((argp->flags & NFSMNT_READDIRSIZE) && argp->readdirsize > 0) {
|
|
nmp->nm_readdirsize = argp->readdirsize;
|
|
}
|
|
|
|
if ((argp->flags & NFSMNT_ACREGMIN) && argp->acregmin >= 0)
|
|
nmp->nm_acregmin = argp->acregmin;
|
|
else
|
|
nmp->nm_acregmin = NFS_MINATTRTIMO;
|
|
if ((argp->flags & NFSMNT_ACREGMAX) && argp->acregmax >= 0)
|
|
nmp->nm_acregmax = argp->acregmax;
|
|
else
|
|
nmp->nm_acregmax = NFS_MAXATTRTIMO;
|
|
if ((argp->flags & NFSMNT_ACDIRMIN) && argp->acdirmin >= 0)
|
|
nmp->nm_acdirmin = argp->acdirmin;
|
|
else
|
|
nmp->nm_acdirmin = NFS_MINDIRATTRTIMO;
|
|
if ((argp->flags & NFSMNT_ACDIRMAX) && argp->acdirmax >= 0)
|
|
nmp->nm_acdirmax = argp->acdirmax;
|
|
else
|
|
nmp->nm_acdirmax = NFS_MAXDIRATTRTIMO;
|
|
if (nmp->nm_acdirmin > nmp->nm_acdirmax)
|
|
nmp->nm_acdirmin = nmp->nm_acdirmax;
|
|
if (nmp->nm_acregmin > nmp->nm_acregmax)
|
|
nmp->nm_acregmin = nmp->nm_acregmax;
|
|
|
|
if ((argp->flags & NFSMNT_READAHEAD) && argp->readahead >= 0) {
|
|
if (argp->readahead <= NFS_MAXRAHEAD)
|
|
nmp->nm_readahead = argp->readahead;
|
|
else
|
|
nmp->nm_readahead = NFS_MAXRAHEAD;
|
|
}
|
|
if ((argp->flags & NFSMNT_WCOMMITSIZE) && argp->wcommitsize >= 0) {
|
|
if (argp->wcommitsize < nmp->nm_wsize)
|
|
nmp->nm_wcommitsize = nmp->nm_wsize;
|
|
else
|
|
nmp->nm_wcommitsize = argp->wcommitsize;
|
|
}
|
|
|
|
adjsock |= ((nmp->nm_sotype != argp->sotype) ||
|
|
(nmp->nm_soproto != argp->proto));
|
|
|
|
if (nmp->nm_client != NULL && adjsock) {
|
|
int haslock = 0, error = 0;
|
|
|
|
if (nmp->nm_sotype == SOCK_STREAM) {
|
|
error = newnfs_sndlock(&nmp->nm_sockreq.nr_lock);
|
|
if (!error)
|
|
haslock = 1;
|
|
}
|
|
if (!error) {
|
|
newnfs_disconnect(&nmp->nm_sockreq);
|
|
if (haslock)
|
|
newnfs_sndunlock(&nmp->nm_sockreq.nr_lock);
|
|
nmp->nm_sotype = argp->sotype;
|
|
nmp->nm_soproto = argp->proto;
|
|
if (nmp->nm_sotype == SOCK_DGRAM)
|
|
while (newnfs_connect(nmp, &nmp->nm_sockreq,
|
|
cred, td, 0)) {
|
|
printf("newnfs_args: retrying connect\n");
|
|
(void) nfs_catnap(PSOCK, 0, "newnfscon");
|
|
}
|
|
}
|
|
} else {
|
|
nmp->nm_sotype = argp->sotype;
|
|
nmp->nm_soproto = argp->proto;
|
|
}
|
|
|
|
if (hostname != NULL) {
|
|
strlcpy(nmp->nm_hostname, hostname,
|
|
sizeof(nmp->nm_hostname));
|
|
p = strchr(nmp->nm_hostname, ':');
|
|
if (p != NULL)
|
|
*p = '\0';
|
|
}
|
|
}
|
|
|
|
static const char *nfs_opts[] = { "from", "nfs_args",
|
|
"noatime", "noexec", "suiddir", "nosuid", "nosymfollow", "union",
|
|
"noclusterr", "noclusterw", "multilabel", "acls", "force", "update",
|
|
"async", "noconn", "nolockd", "conn", "lockd", "intr", "rdirplus",
|
|
"readdirsize", "soft", "hard", "mntudp", "tcp", "udp", "wsize", "rsize",
|
|
"retrans", "acregmin", "acregmax", "acdirmin", "acdirmax", "resvport",
|
|
"readahead", "hostname", "timeout", "addr", "fh", "nfsv3", "sec",
|
|
"principal", "nfsv4", "gssname", "allgssname", "dirpath",
|
|
"negnametimeo", "nocto",
|
|
NULL };
|
|
|
|
/*
|
|
* VFS Operations.
|
|
*
|
|
* mount system call
|
|
* It seems a bit dumb to copyinstr() the host and path here and then
|
|
* bcopy() them in mountnfs(), but I wanted to detect errors before
|
|
* doing the sockargs() call because sockargs() allocates an mbuf and
|
|
* an error after that means that I have to release the mbuf.
|
|
*/
|
|
/* ARGSUSED */
|
|
static int
|
|
nfs_mount(struct mount *mp)
|
|
{
|
|
struct nfs_args args = {
|
|
.version = NFS_ARGSVERSION,
|
|
.addr = NULL,
|
|
.addrlen = sizeof (struct sockaddr_in),
|
|
.sotype = SOCK_STREAM,
|
|
.proto = 0,
|
|
.fh = NULL,
|
|
.fhsize = 0,
|
|
.flags = NFSMNT_RESVPORT,
|
|
.wsize = NFS_WSIZE,
|
|
.rsize = NFS_RSIZE,
|
|
.readdirsize = NFS_READDIRSIZE,
|
|
.timeo = 10,
|
|
.retrans = NFS_RETRANS,
|
|
.readahead = NFS_DEFRAHEAD,
|
|
.wcommitsize = 0, /* was: NQ_DEFLEASE */
|
|
.hostname = NULL,
|
|
.acregmin = NFS_MINATTRTIMO,
|
|
.acregmax = NFS_MAXATTRTIMO,
|
|
.acdirmin = NFS_MINDIRATTRTIMO,
|
|
.acdirmax = NFS_MAXDIRATTRTIMO,
|
|
};
|
|
int error = 0, ret, len;
|
|
struct sockaddr *nam = NULL;
|
|
struct vnode *vp;
|
|
struct thread *td;
|
|
char hst[MNAMELEN];
|
|
u_char nfh[NFSX_FHMAX], krbname[100], dirpath[100], srvkrbname[100];
|
|
char *opt, *name, *secname;
|
|
int negnametimeo = NFS_DEFAULT_NEGNAMETIMEO;
|
|
int dirlen, has_nfs_args_opt, krbnamelen, srvkrbnamelen;
|
|
size_t hstlen;
|
|
|
|
has_nfs_args_opt = 0;
|
|
if (vfs_filteropt(mp->mnt_optnew, nfs_opts)) {
|
|
error = EINVAL;
|
|
goto out;
|
|
}
|
|
|
|
td = curthread;
|
|
if ((mp->mnt_flag & (MNT_ROOTFS | MNT_UPDATE)) == MNT_ROOTFS) {
|
|
error = nfs_mountroot(mp);
|
|
goto out;
|
|
}
|
|
|
|
nfscl_init();
|
|
|
|
/*
|
|
* The old mount_nfs program passed the struct nfs_args
|
|
* from userspace to kernel. The new mount_nfs program
|
|
* passes string options via nmount() from userspace to kernel
|
|
* and we populate the struct nfs_args in the kernel.
|
|
*/
|
|
if (vfs_getopt(mp->mnt_optnew, "nfs_args", NULL, NULL) == 0) {
|
|
error = vfs_copyopt(mp->mnt_optnew, "nfs_args", &args,
|
|
sizeof(args));
|
|
if (error != 0)
|
|
goto out;
|
|
|
|
if (args.version != NFS_ARGSVERSION) {
|
|
error = EPROGMISMATCH;
|
|
goto out;
|
|
}
|
|
has_nfs_args_opt = 1;
|
|
}
|
|
|
|
/* Handle the new style options. */
|
|
if (vfs_getopt(mp->mnt_optnew, "noconn", NULL, NULL) == 0)
|
|
args.flags |= NFSMNT_NOCONN;
|
|
if (vfs_getopt(mp->mnt_optnew, "conn", NULL, NULL) == 0)
|
|
args.flags |= NFSMNT_NOCONN;
|
|
if (vfs_getopt(mp->mnt_optnew, "nolockd", NULL, NULL) == 0)
|
|
args.flags |= NFSMNT_NOLOCKD;
|
|
if (vfs_getopt(mp->mnt_optnew, "lockd", NULL, NULL) == 0)
|
|
args.flags &= ~NFSMNT_NOLOCKD;
|
|
if (vfs_getopt(mp->mnt_optnew, "intr", NULL, NULL) == 0)
|
|
args.flags |= NFSMNT_INT;
|
|
if (vfs_getopt(mp->mnt_optnew, "rdirplus", NULL, NULL) == 0)
|
|
args.flags |= NFSMNT_RDIRPLUS;
|
|
if (vfs_getopt(mp->mnt_optnew, "resvport", NULL, NULL) == 0)
|
|
args.flags |= NFSMNT_RESVPORT;
|
|
if (vfs_getopt(mp->mnt_optnew, "noresvport", NULL, NULL) == 0)
|
|
args.flags &= ~NFSMNT_RESVPORT;
|
|
if (vfs_getopt(mp->mnt_optnew, "soft", NULL, NULL) == 0)
|
|
args.flags |= NFSMNT_SOFT;
|
|
if (vfs_getopt(mp->mnt_optnew, "hard", NULL, NULL) == 0)
|
|
args.flags &= ~NFSMNT_SOFT;
|
|
if (vfs_getopt(mp->mnt_optnew, "mntudp", NULL, NULL) == 0)
|
|
args.sotype = SOCK_DGRAM;
|
|
if (vfs_getopt(mp->mnt_optnew, "udp", NULL, NULL) == 0)
|
|
args.sotype = SOCK_DGRAM;
|
|
if (vfs_getopt(mp->mnt_optnew, "tcp", NULL, NULL) == 0)
|
|
args.sotype = SOCK_STREAM;
|
|
if (vfs_getopt(mp->mnt_optnew, "nfsv3", NULL, NULL) == 0)
|
|
args.flags |= NFSMNT_NFSV3;
|
|
if (vfs_getopt(mp->mnt_optnew, "nfsv4", NULL, NULL) == 0) {
|
|
args.flags |= NFSMNT_NFSV4;
|
|
args.sotype = SOCK_STREAM;
|
|
}
|
|
if (vfs_getopt(mp->mnt_optnew, "allgssname", NULL, NULL) == 0)
|
|
args.flags |= NFSMNT_ALLGSSNAME;
|
|
if (vfs_getopt(mp->mnt_optnew, "nocto", NULL, NULL) == 0)
|
|
args.flags |= NFSMNT_NOCTO;
|
|
if (vfs_getopt(mp->mnt_optnew, "readdirsize", (void **)&opt, NULL) == 0) {
|
|
if (opt == NULL) {
|
|
vfs_mount_error(mp, "illegal readdirsize");
|
|
error = EINVAL;
|
|
goto out;
|
|
}
|
|
ret = sscanf(opt, "%d", &args.readdirsize);
|
|
if (ret != 1 || args.readdirsize <= 0) {
|
|
vfs_mount_error(mp, "illegal readdirsize: %s",
|
|
opt);
|
|
error = EINVAL;
|
|
goto out;
|
|
}
|
|
args.flags |= NFSMNT_READDIRSIZE;
|
|
}
|
|
if (vfs_getopt(mp->mnt_optnew, "readahead", (void **)&opt, NULL) == 0) {
|
|
if (opt == NULL) {
|
|
vfs_mount_error(mp, "illegal readahead");
|
|
error = EINVAL;
|
|
goto out;
|
|
}
|
|
ret = sscanf(opt, "%d", &args.readahead);
|
|
if (ret != 1 || args.readahead <= 0) {
|
|
vfs_mount_error(mp, "illegal readahead: %s",
|
|
opt);
|
|
error = EINVAL;
|
|
goto out;
|
|
}
|
|
args.flags |= NFSMNT_READAHEAD;
|
|
}
|
|
if (vfs_getopt(mp->mnt_optnew, "wsize", (void **)&opt, NULL) == 0) {
|
|
if (opt == NULL) {
|
|
vfs_mount_error(mp, "illegal wsize");
|
|
error = EINVAL;
|
|
goto out;
|
|
}
|
|
ret = sscanf(opt, "%d", &args.wsize);
|
|
if (ret != 1 || args.wsize <= 0) {
|
|
vfs_mount_error(mp, "illegal wsize: %s",
|
|
opt);
|
|
error = EINVAL;
|
|
goto out;
|
|
}
|
|
args.flags |= NFSMNT_WSIZE;
|
|
}
|
|
if (vfs_getopt(mp->mnt_optnew, "rsize", (void **)&opt, NULL) == 0) {
|
|
if (opt == NULL) {
|
|
vfs_mount_error(mp, "illegal rsize");
|
|
error = EINVAL;
|
|
goto out;
|
|
}
|
|
ret = sscanf(opt, "%d", &args.rsize);
|
|
if (ret != 1 || args.rsize <= 0) {
|
|
vfs_mount_error(mp, "illegal wsize: %s",
|
|
opt);
|
|
error = EINVAL;
|
|
goto out;
|
|
}
|
|
args.flags |= NFSMNT_RSIZE;
|
|
}
|
|
if (vfs_getopt(mp->mnt_optnew, "retrans", (void **)&opt, NULL) == 0) {
|
|
if (opt == NULL) {
|
|
vfs_mount_error(mp, "illegal retrans");
|
|
error = EINVAL;
|
|
goto out;
|
|
}
|
|
ret = sscanf(opt, "%d", &args.retrans);
|
|
if (ret != 1 || args.retrans <= 0) {
|
|
vfs_mount_error(mp, "illegal retrans: %s",
|
|
opt);
|
|
error = EINVAL;
|
|
goto out;
|
|
}
|
|
args.flags |= NFSMNT_RETRANS;
|
|
}
|
|
if (vfs_getopt(mp->mnt_optnew, "acregmin", (void **)&opt, NULL) == 0) {
|
|
ret = sscanf(opt, "%d", &args.acregmin);
|
|
if (ret != 1 || args.acregmin < 0) {
|
|
vfs_mount_error(mp, "illegal acregmin: %s",
|
|
opt);
|
|
error = EINVAL;
|
|
goto out;
|
|
}
|
|
args.flags |= NFSMNT_ACREGMIN;
|
|
}
|
|
if (vfs_getopt(mp->mnt_optnew, "acregmax", (void **)&opt, NULL) == 0) {
|
|
ret = sscanf(opt, "%d", &args.acregmax);
|
|
if (ret != 1 || args.acregmax < 0) {
|
|
vfs_mount_error(mp, "illegal acregmax: %s",
|
|
opt);
|
|
error = EINVAL;
|
|
goto out;
|
|
}
|
|
args.flags |= NFSMNT_ACREGMAX;
|
|
}
|
|
if (vfs_getopt(mp->mnt_optnew, "acdirmin", (void **)&opt, NULL) == 0) {
|
|
ret = sscanf(opt, "%d", &args.acdirmin);
|
|
if (ret != 1 || args.acdirmin < 0) {
|
|
vfs_mount_error(mp, "illegal acdirmin: %s",
|
|
opt);
|
|
error = EINVAL;
|
|
goto out;
|
|
}
|
|
args.flags |= NFSMNT_ACDIRMIN;
|
|
}
|
|
if (vfs_getopt(mp->mnt_optnew, "acdirmax", (void **)&opt, NULL) == 0) {
|
|
ret = sscanf(opt, "%d", &args.acdirmax);
|
|
if (ret != 1 || args.acdirmax < 0) {
|
|
vfs_mount_error(mp, "illegal acdirmax: %s",
|
|
opt);
|
|
error = EINVAL;
|
|
goto out;
|
|
}
|
|
args.flags |= NFSMNT_ACDIRMAX;
|
|
}
|
|
if (vfs_getopt(mp->mnt_optnew, "timeout", (void **)&opt, NULL) == 0) {
|
|
ret = sscanf(opt, "%d", &args.timeo);
|
|
if (ret != 1 || args.timeo <= 0) {
|
|
vfs_mount_error(mp, "illegal timeout: %s",
|
|
opt);
|
|
error = EINVAL;
|
|
goto out;
|
|
}
|
|
args.flags |= NFSMNT_TIMEO;
|
|
}
|
|
if (vfs_getopt(mp->mnt_optnew, "negnametimeo", (void **)&opt, NULL)
|
|
== 0) {
|
|
ret = sscanf(opt, "%d", &negnametimeo);
|
|
if (ret != 1 || negnametimeo < 0) {
|
|
vfs_mount_error(mp, "illegal negnametimeo: %s",
|
|
opt);
|
|
error = EINVAL;
|
|
goto out;
|
|
}
|
|
}
|
|
if (vfs_getopt(mp->mnt_optnew, "sec",
|
|
(void **) &secname, NULL) == 0)
|
|
nfs_sec_name(secname, &args.flags);
|
|
|
|
if (mp->mnt_flag & MNT_UPDATE) {
|
|
struct nfsmount *nmp = VFSTONFS(mp);
|
|
|
|
if (nmp == NULL) {
|
|
error = EIO;
|
|
goto out;
|
|
}
|
|
/*
|
|
* When doing an update, we can't change version,
|
|
* security, switch lockd strategies or change cookie
|
|
* translation
|
|
*/
|
|
args.flags = (args.flags &
|
|
~(NFSMNT_NFSV3 |
|
|
NFSMNT_NFSV4 |
|
|
NFSMNT_KERB |
|
|
NFSMNT_INTEGRITY |
|
|
NFSMNT_PRIVACY |
|
|
NFSMNT_NOLOCKD /*|NFSMNT_XLATECOOKIE*/)) |
|
|
(nmp->nm_flag &
|
|
(NFSMNT_NFSV3 |
|
|
NFSMNT_NFSV4 |
|
|
NFSMNT_KERB |
|
|
NFSMNT_INTEGRITY |
|
|
NFSMNT_PRIVACY |
|
|
NFSMNT_NOLOCKD /*|NFSMNT_XLATECOOKIE*/));
|
|
nfs_decode_args(mp, nmp, &args, NULL, td->td_ucred, td);
|
|
goto out;
|
|
}
|
|
|
|
/*
|
|
* Make the nfs_ip_paranoia sysctl serve as the default connection
|
|
* or no-connection mode for those protocols that support
|
|
* no-connection mode (the flag will be cleared later for protocols
|
|
* that do not support no-connection mode). This will allow a client
|
|
* to receive replies from a different IP then the request was
|
|
* sent to. Note: default value for nfs_ip_paranoia is 1 (paranoid),
|
|
* not 0.
|
|
*/
|
|
if (nfs_ip_paranoia == 0)
|
|
args.flags |= NFSMNT_NOCONN;
|
|
|
|
if (has_nfs_args_opt != 0) {
|
|
/*
|
|
* In the 'nfs_args' case, the pointers in the args
|
|
* structure are in userland - we copy them in here.
|
|
*/
|
|
if (args.fhsize < 0 || args.fhsize > NFSX_V3FHMAX) {
|
|
vfs_mount_error(mp, "Bad file handle");
|
|
error = EINVAL;
|
|
goto out;
|
|
}
|
|
error = copyin((caddr_t)args.fh, (caddr_t)nfh,
|
|
args.fhsize);
|
|
if (error != 0)
|
|
goto out;
|
|
error = copyinstr(args.hostname, hst, MNAMELEN - 1, &hstlen);
|
|
if (error != 0)
|
|
goto out;
|
|
bzero(&hst[hstlen], MNAMELEN - hstlen);
|
|
args.hostname = hst;
|
|
/* sockargs() call must be after above copyin() calls */
|
|
error = getsockaddr(&nam, (caddr_t)args.addr,
|
|
args.addrlen);
|
|
if (error != 0)
|
|
goto out;
|
|
} else {
|
|
if (vfs_getopt(mp->mnt_optnew, "fh", (void **)&args.fh,
|
|
&args.fhsize) == 0) {
|
|
if (args.fhsize < 0 || args.fhsize > NFSX_FHMAX) {
|
|
vfs_mount_error(mp, "Bad file handle");
|
|
error = EINVAL;
|
|
goto out;
|
|
}
|
|
bcopy(args.fh, nfh, args.fhsize);
|
|
} else {
|
|
args.fhsize = 0;
|
|
}
|
|
(void) vfs_getopt(mp->mnt_optnew, "hostname",
|
|
(void **)&args.hostname, &len);
|
|
if (args.hostname == NULL) {
|
|
vfs_mount_error(mp, "Invalid hostname");
|
|
error = EINVAL;
|
|
goto out;
|
|
}
|
|
bcopy(args.hostname, hst, MNAMELEN);
|
|
hst[MNAMELEN - 1] = '\0';
|
|
}
|
|
|
|
if (vfs_getopt(mp->mnt_optnew, "principal", (void **)&name, NULL) == 0)
|
|
strlcpy(srvkrbname, name, sizeof (srvkrbname));
|
|
else
|
|
snprintf(srvkrbname, sizeof (srvkrbname), "nfs@%s", hst);
|
|
srvkrbnamelen = strlen(srvkrbname);
|
|
|
|
if (vfs_getopt(mp->mnt_optnew, "gssname", (void **)&name, NULL) == 0)
|
|
strlcpy(krbname, name, sizeof (krbname));
|
|
else
|
|
krbname[0] = '\0';
|
|
krbnamelen = strlen(krbname);
|
|
|
|
if (vfs_getopt(mp->mnt_optnew, "dirpath", (void **)&name, NULL) == 0)
|
|
strlcpy(dirpath, name, sizeof (dirpath));
|
|
else
|
|
dirpath[0] = '\0';
|
|
dirlen = strlen(dirpath);
|
|
|
|
if (has_nfs_args_opt == 0) {
|
|
if (vfs_getopt(mp->mnt_optnew, "addr",
|
|
(void **)&args.addr, &args.addrlen) == 0) {
|
|
if (args.addrlen > SOCK_MAXADDRLEN) {
|
|
error = ENAMETOOLONG;
|
|
goto out;
|
|
}
|
|
nam = malloc(args.addrlen, M_SONAME, M_WAITOK);
|
|
bcopy(args.addr, nam, args.addrlen);
|
|
nam->sa_len = args.addrlen;
|
|
} else {
|
|
vfs_mount_error(mp, "No server address");
|
|
error = EINVAL;
|
|
goto out;
|
|
}
|
|
}
|
|
|
|
args.fh = nfh;
|
|
error = mountnfs(&args, mp, nam, hst, krbname, krbnamelen, dirpath,
|
|
dirlen, srvkrbname, srvkrbnamelen, &vp, td->td_ucred, td,
|
|
negnametimeo);
|
|
out:
|
|
if (!error) {
|
|
MNT_ILOCK(mp);
|
|
mp->mnt_kern_flag |= (MNTK_MPSAFE|MNTK_LOOKUP_SHARED);
|
|
MNT_IUNLOCK(mp);
|
|
}
|
|
return (error);
|
|
}
|
|
|
|
|
|
/*
|
|
* VFS Operations.
|
|
*
|
|
* mount system call
|
|
* It seems a bit dumb to copyinstr() the host and path here and then
|
|
* bcopy() them in mountnfs(), but I wanted to detect errors before
|
|
* doing the sockargs() call because sockargs() allocates an mbuf and
|
|
* an error after that means that I have to release the mbuf.
|
|
*/
|
|
/* ARGSUSED */
|
|
static int
|
|
nfs_cmount(struct mntarg *ma, void *data, int flags)
|
|
{
|
|
int error;
|
|
struct nfs_args args;
|
|
|
|
error = copyin(data, &args, sizeof (struct nfs_args));
|
|
if (error)
|
|
return error;
|
|
|
|
ma = mount_arg(ma, "nfs_args", &args, sizeof args);
|
|
|
|
error = kernel_mount(ma, flags);
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* Common code for mount and mountroot
|
|
*/
|
|
static int
|
|
mountnfs(struct nfs_args *argp, struct mount *mp, struct sockaddr *nam,
|
|
char *hst, u_char *krbname, int krbnamelen, u_char *dirpath, int dirlen,
|
|
u_char *srvkrbname, int srvkrbnamelen, struct vnode **vpp,
|
|
struct ucred *cred, struct thread *td, int negnametimeo)
|
|
{
|
|
struct nfsmount *nmp;
|
|
struct nfsnode *np;
|
|
int error, trycnt, ret;
|
|
struct nfsvattr nfsva;
|
|
static u_int64_t clval = 0;
|
|
|
|
if (mp->mnt_flag & MNT_UPDATE) {
|
|
nmp = VFSTONFS(mp);
|
|
printf("%s: MNT_UPDATE is no longer handled here\n", __func__);
|
|
FREE(nam, M_SONAME);
|
|
return (0);
|
|
} else {
|
|
MALLOC(nmp, struct nfsmount *, sizeof (struct nfsmount) +
|
|
krbnamelen + dirlen + srvkrbnamelen + 2,
|
|
M_NEWNFSMNT, M_WAITOK | M_ZERO);
|
|
TAILQ_INIT(&nmp->nm_bufq);
|
|
if (clval == 0)
|
|
clval = (u_int64_t)nfsboottime.tv_sec;
|
|
nmp->nm_clval = clval++;
|
|
nmp->nm_krbnamelen = krbnamelen;
|
|
nmp->nm_dirpathlen = dirlen;
|
|
nmp->nm_srvkrbnamelen = srvkrbnamelen;
|
|
if (td->td_ucred->cr_uid != (uid_t)0) {
|
|
/*
|
|
* nm_uid is used to get KerberosV credentials for
|
|
* the nfsv4 state handling operations if there is
|
|
* no host based principal set. Use the uid of
|
|
* this user if not root, since they are doing the
|
|
* mount. I don't think setting this for root will
|
|
* work, since root normally does not have user
|
|
* credentials in a credentials cache.
|
|
*/
|
|
nmp->nm_uid = td->td_ucred->cr_uid;
|
|
} else {
|
|
/*
|
|
* Just set to -1, so it won't be used.
|
|
*/
|
|
nmp->nm_uid = (uid_t)-1;
|
|
}
|
|
|
|
/* Copy and null terminate all the names */
|
|
if (nmp->nm_krbnamelen > 0) {
|
|
bcopy(krbname, nmp->nm_krbname, nmp->nm_krbnamelen);
|
|
nmp->nm_name[nmp->nm_krbnamelen] = '\0';
|
|
}
|
|
if (nmp->nm_dirpathlen > 0) {
|
|
bcopy(dirpath, NFSMNT_DIRPATH(nmp),
|
|
nmp->nm_dirpathlen);
|
|
nmp->nm_name[nmp->nm_krbnamelen + nmp->nm_dirpathlen
|
|
+ 1] = '\0';
|
|
}
|
|
if (nmp->nm_srvkrbnamelen > 0) {
|
|
bcopy(srvkrbname, NFSMNT_SRVKRBNAME(nmp),
|
|
nmp->nm_srvkrbnamelen);
|
|
nmp->nm_name[nmp->nm_krbnamelen + nmp->nm_dirpathlen
|
|
+ nmp->nm_srvkrbnamelen + 2] = '\0';
|
|
}
|
|
nmp->nm_sockreq.nr_cred = crhold(cred);
|
|
mtx_init(&nmp->nm_sockreq.nr_mtx, "nfssock", NULL, MTX_DEF);
|
|
mp->mnt_data = nmp;
|
|
nmp->nm_getinfo = nfs_getnlminfo;
|
|
nmp->nm_vinvalbuf = ncl_vinvalbuf;
|
|
}
|
|
vfs_getnewfsid(mp);
|
|
nmp->nm_mountp = mp;
|
|
mtx_init(&nmp->nm_mtx, "NFSmount lock", NULL, MTX_DEF | MTX_DUPOK);
|
|
nmp->nm_negnametimeo = negnametimeo;
|
|
|
|
nfs_decode_args(mp, nmp, argp, hst, cred, td);
|
|
|
|
/*
|
|
* V2 can only handle 32 bit filesizes. A 4GB-1 limit may be too
|
|
* high, depending on whether we end up with negative offsets in
|
|
* the client or server somewhere. 2GB-1 may be safer.
|
|
*
|
|
* For V3, ncl_fsinfo will adjust this as necessary. Assume maximum
|
|
* that we can handle until we find out otherwise.
|
|
* XXX Our "safe" limit on the client is what we can store in our
|
|
* buffer cache using signed(!) block numbers.
|
|
*/
|
|
if ((argp->flags & (NFSMNT_NFSV3 | NFSMNT_NFSV4)) == 0)
|
|
nmp->nm_maxfilesize = 0xffffffffLL;
|
|
else
|
|
nmp->nm_maxfilesize = OFF_MAX;
|
|
|
|
nmp->nm_timeo = NFS_TIMEO;
|
|
nmp->nm_retry = NFS_RETRANS;
|
|
if ((argp->flags & (NFSMNT_NFSV3 | NFSMNT_NFSV4)) == 0) {
|
|
nmp->nm_wsize = NFS_WSIZE;
|
|
nmp->nm_rsize = NFS_RSIZE;
|
|
nmp->nm_readdirsize = NFS_READDIRSIZE;
|
|
}
|
|
nmp->nm_wcommitsize = hibufspace / (desiredvnodes / 1000);
|
|
nmp->nm_numgrps = NFS_MAXGRPS;
|
|
nmp->nm_readahead = NFS_DEFRAHEAD;
|
|
nmp->nm_tprintf_delay = nfs_tprintf_delay;
|
|
if (nmp->nm_tprintf_delay < 0)
|
|
nmp->nm_tprintf_delay = 0;
|
|
nmp->nm_tprintf_initial_delay = nfs_tprintf_initial_delay;
|
|
if (nmp->nm_tprintf_initial_delay < 0)
|
|
nmp->nm_tprintf_initial_delay = 0;
|
|
nmp->nm_fhsize = argp->fhsize;
|
|
if (nmp->nm_fhsize > 0)
|
|
bcopy((caddr_t)argp->fh, (caddr_t)nmp->nm_fh, argp->fhsize);
|
|
bcopy(hst, mp->mnt_stat.f_mntfromname, MNAMELEN);
|
|
nmp->nm_nam = nam;
|
|
/* Set up the sockets and per-host congestion */
|
|
nmp->nm_sotype = argp->sotype;
|
|
nmp->nm_soproto = argp->proto;
|
|
nmp->nm_sockreq.nr_prog = NFS_PROG;
|
|
if ((argp->flags & NFSMNT_NFSV4))
|
|
nmp->nm_sockreq.nr_vers = NFS_VER4;
|
|
else if ((argp->flags & NFSMNT_NFSV3))
|
|
nmp->nm_sockreq.nr_vers = NFS_VER3;
|
|
else
|
|
nmp->nm_sockreq.nr_vers = NFS_VER2;
|
|
|
|
|
|
if ((error = newnfs_connect(nmp, &nmp->nm_sockreq, cred, td, 0)))
|
|
goto bad;
|
|
|
|
/*
|
|
* A reference count is needed on the nfsnode representing the
|
|
* remote root. If this object is not persistent, then backward
|
|
* traversals of the mount point (i.e. "..") will not work if
|
|
* the nfsnode gets flushed out of the cache. Ufs does not have
|
|
* this problem, because one can identify root inodes by their
|
|
* number == ROOTINO (2).
|
|
*/
|
|
if (nmp->nm_fhsize == 0 && (nmp->nm_flag & NFSMNT_NFSV4) &&
|
|
nmp->nm_dirpathlen > 0) {
|
|
/*
|
|
* If the fhsize on the mount point == 0 for V4, the mount
|
|
* path needs to be looked up.
|
|
*/
|
|
trycnt = 3;
|
|
do {
|
|
error = nfsrpc_getdirpath(nmp, NFSMNT_DIRPATH(nmp),
|
|
cred, td);
|
|
if (error)
|
|
(void) nfs_catnap(PZERO, error, "nfsgetdirp");
|
|
} while (error && --trycnt > 0);
|
|
if (error) {
|
|
error = nfscl_maperr(td, error, (uid_t)0, (gid_t)0);
|
|
goto bad;
|
|
}
|
|
}
|
|
if (nmp->nm_fhsize > 0) {
|
|
/*
|
|
* Set f_iosize to NFS_DIRBLKSIZ so that bo_bsize gets set
|
|
* non-zero for the root vnode. f_iosize will be set correctly
|
|
* by nfs_statfs() before any I/O occurs.
|
|
*/
|
|
mp->mnt_stat.f_iosize = NFS_DIRBLKSIZ;
|
|
error = ncl_nget(mp, nmp->nm_fh, nmp->nm_fhsize, &np,
|
|
LK_EXCLUSIVE);
|
|
if (error)
|
|
goto bad;
|
|
*vpp = NFSTOV(np);
|
|
|
|
/*
|
|
* Get file attributes and transfer parameters for the
|
|
* mountpoint. This has the side effect of filling in
|
|
* (*vpp)->v_type with the correct value.
|
|
*/
|
|
ret = nfsrpc_getattrnovp(nmp, nmp->nm_fh, nmp->nm_fhsize, 1,
|
|
cred, td, &nfsva, NULL);
|
|
if (ret) {
|
|
/*
|
|
* Just set default values to get things going.
|
|
*/
|
|
NFSBZERO((caddr_t)&nfsva, sizeof (struct nfsvattr));
|
|
nfsva.na_vattr.va_type = VDIR;
|
|
nfsva.na_vattr.va_mode = 0777;
|
|
nfsva.na_vattr.va_nlink = 100;
|
|
nfsva.na_vattr.va_uid = (uid_t)0;
|
|
nfsva.na_vattr.va_gid = (gid_t)0;
|
|
nfsva.na_vattr.va_fileid = 2;
|
|
nfsva.na_vattr.va_gen = 1;
|
|
nfsva.na_vattr.va_blocksize = NFS_FABLKSIZE;
|
|
nfsva.na_vattr.va_size = 512 * 1024;
|
|
}
|
|
(void) nfscl_loadattrcache(vpp, &nfsva, NULL, NULL, 0, 1);
|
|
if (argp->flags & NFSMNT_NFSV3)
|
|
ncl_fsinfo(nmp, *vpp, cred, td);
|
|
|
|
/* Mark if the mount point supports NFSv4 ACLs. */
|
|
if ((argp->flags & NFSMNT_NFSV4) != 0 && nfsrv_useacl != 0 &&
|
|
ret == 0 &&
|
|
NFSISSET_ATTRBIT(&nfsva.na_suppattr, NFSATTRBIT_ACL)) {
|
|
MNT_ILOCK(mp);
|
|
mp->mnt_flag |= MNT_NFS4ACLS;
|
|
MNT_IUNLOCK(mp);
|
|
}
|
|
|
|
/*
|
|
* Lose the lock but keep the ref.
|
|
*/
|
|
VOP_UNLOCK(*vpp, 0);
|
|
return (0);
|
|
}
|
|
error = EIO;
|
|
|
|
bad:
|
|
newnfs_disconnect(&nmp->nm_sockreq);
|
|
crfree(nmp->nm_sockreq.nr_cred);
|
|
mtx_destroy(&nmp->nm_sockreq.nr_mtx);
|
|
mtx_destroy(&nmp->nm_mtx);
|
|
FREE(nmp, M_NEWNFSMNT);
|
|
FREE(nam, M_SONAME);
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* unmount system call
|
|
*/
|
|
static int
|
|
nfs_unmount(struct mount *mp, int mntflags)
|
|
{
|
|
struct thread *td;
|
|
struct nfsmount *nmp;
|
|
int error, flags = 0, trycnt = 0;
|
|
|
|
td = curthread;
|
|
|
|
if (mntflags & MNT_FORCE)
|
|
flags |= FORCECLOSE;
|
|
nmp = VFSTONFS(mp);
|
|
/*
|
|
* Goes something like this..
|
|
* - Call vflush() to clear out vnodes for this filesystem
|
|
* - Close the socket
|
|
* - Free up the data structures
|
|
*/
|
|
/* In the forced case, cancel any outstanding requests. */
|
|
if (mntflags & MNT_FORCE) {
|
|
error = newnfs_nmcancelreqs(nmp);
|
|
if (error)
|
|
goto out;
|
|
/* For a forced close, get rid of the renew thread now */
|
|
nfscl_umount(nmp, td);
|
|
}
|
|
/* We hold 1 extra ref on the root vnode; see comment in mountnfs(). */
|
|
do {
|
|
error = vflush(mp, 1, flags, td);
|
|
if ((mntflags & MNT_FORCE) && error != 0 && ++trycnt < 30)
|
|
(void) nfs_catnap(PSOCK, error, "newndm");
|
|
} while ((mntflags & MNT_FORCE) && error != 0 && trycnt < 30);
|
|
if (error)
|
|
goto out;
|
|
|
|
/*
|
|
* We are now committed to the unmount.
|
|
*/
|
|
if ((mntflags & MNT_FORCE) == 0)
|
|
nfscl_umount(nmp, td);
|
|
newnfs_disconnect(&nmp->nm_sockreq);
|
|
crfree(nmp->nm_sockreq.nr_cred);
|
|
FREE(nmp->nm_nam, M_SONAME);
|
|
|
|
mtx_destroy(&nmp->nm_sockreq.nr_mtx);
|
|
mtx_destroy(&nmp->nm_mtx);
|
|
FREE(nmp, M_NEWNFSMNT);
|
|
out:
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* Return root of a filesystem
|
|
*/
|
|
static int
|
|
nfs_root(struct mount *mp, int flags, struct vnode **vpp)
|
|
{
|
|
struct vnode *vp;
|
|
struct nfsmount *nmp;
|
|
struct nfsnode *np;
|
|
int error;
|
|
|
|
nmp = VFSTONFS(mp);
|
|
error = ncl_nget(mp, nmp->nm_fh, nmp->nm_fhsize, &np, flags);
|
|
if (error)
|
|
return error;
|
|
vp = NFSTOV(np);
|
|
/*
|
|
* Get transfer parameters and attributes for root vnode once.
|
|
*/
|
|
mtx_lock(&nmp->nm_mtx);
|
|
if (NFSHASNFSV3(nmp) && !NFSHASGOTFSINFO(nmp)) {
|
|
mtx_unlock(&nmp->nm_mtx);
|
|
ncl_fsinfo(nmp, vp, curthread->td_ucred, curthread);
|
|
} else
|
|
mtx_unlock(&nmp->nm_mtx);
|
|
if (vp->v_type == VNON)
|
|
vp->v_type = VDIR;
|
|
vp->v_vflag |= VV_ROOT;
|
|
*vpp = vp;
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Flush out the buffer cache
|
|
*/
|
|
/* ARGSUSED */
|
|
static int
|
|
nfs_sync(struct mount *mp, int waitfor)
|
|
{
|
|
struct vnode *vp, *mvp;
|
|
struct thread *td;
|
|
int error, allerror = 0;
|
|
|
|
td = curthread;
|
|
|
|
MNT_ILOCK(mp);
|
|
/*
|
|
* If a forced dismount is in progress, return from here so that
|
|
* the umount(2) syscall doesn't get stuck in VFS_SYNC() before
|
|
* calling VFS_UNMOUNT().
|
|
*/
|
|
if ((mp->mnt_kern_flag & MNTK_UNMOUNTF) != 0) {
|
|
MNT_IUNLOCK(mp);
|
|
return (EBADF);
|
|
}
|
|
|
|
/*
|
|
* Force stale buffer cache information to be flushed.
|
|
*/
|
|
loop:
|
|
MNT_VNODE_FOREACH(vp, mp, mvp) {
|
|
VI_LOCK(vp);
|
|
MNT_IUNLOCK(mp);
|
|
/* XXX Racy bv_cnt check. */
|
|
if (VOP_ISLOCKED(vp) || vp->v_bufobj.bo_dirty.bv_cnt == 0 ||
|
|
waitfor == MNT_LAZY) {
|
|
VI_UNLOCK(vp);
|
|
MNT_ILOCK(mp);
|
|
continue;
|
|
}
|
|
if (vget(vp, LK_EXCLUSIVE | LK_INTERLOCK, td)) {
|
|
MNT_ILOCK(mp);
|
|
MNT_VNODE_FOREACH_ABORT_ILOCKED(mp, mvp);
|
|
goto loop;
|
|
}
|
|
error = VOP_FSYNC(vp, waitfor, td);
|
|
if (error)
|
|
allerror = error;
|
|
VOP_UNLOCK(vp, 0);
|
|
vrele(vp);
|
|
|
|
MNT_ILOCK(mp);
|
|
}
|
|
MNT_IUNLOCK(mp);
|
|
return (allerror);
|
|
}
|
|
|
|
static int
|
|
nfs_sysctl(struct mount *mp, fsctlop_t op, struct sysctl_req *req)
|
|
{
|
|
struct nfsmount *nmp = VFSTONFS(mp);
|
|
struct vfsquery vq;
|
|
int error;
|
|
|
|
bzero(&vq, sizeof(vq));
|
|
switch (op) {
|
|
#if 0
|
|
case VFS_CTL_NOLOCKS:
|
|
val = (nmp->nm_flag & NFSMNT_NOLOCKS) ? 1 : 0;
|
|
if (req->oldptr != NULL) {
|
|
error = SYSCTL_OUT(req, &val, sizeof(val));
|
|
if (error)
|
|
return (error);
|
|
}
|
|
if (req->newptr != NULL) {
|
|
error = SYSCTL_IN(req, &val, sizeof(val));
|
|
if (error)
|
|
return (error);
|
|
if (val)
|
|
nmp->nm_flag |= NFSMNT_NOLOCKS;
|
|
else
|
|
nmp->nm_flag &= ~NFSMNT_NOLOCKS;
|
|
}
|
|
break;
|
|
#endif
|
|
case VFS_CTL_QUERY:
|
|
mtx_lock(&nmp->nm_mtx);
|
|
if (nmp->nm_state & NFSSTA_TIMEO)
|
|
vq.vq_flags |= VQ_NOTRESP;
|
|
mtx_unlock(&nmp->nm_mtx);
|
|
#if 0
|
|
if (!(nmp->nm_flag & NFSMNT_NOLOCKS) &&
|
|
(nmp->nm_state & NFSSTA_LOCKTIMEO))
|
|
vq.vq_flags |= VQ_NOTRESPLOCK;
|
|
#endif
|
|
error = SYSCTL_OUT(req, &vq, sizeof(vq));
|
|
break;
|
|
case VFS_CTL_TIMEO:
|
|
if (req->oldptr != NULL) {
|
|
error = SYSCTL_OUT(req, &nmp->nm_tprintf_initial_delay,
|
|
sizeof(nmp->nm_tprintf_initial_delay));
|
|
if (error)
|
|
return (error);
|
|
}
|
|
if (req->newptr != NULL) {
|
|
error = vfs_suser(mp, req->td);
|
|
if (error)
|
|
return (error);
|
|
error = SYSCTL_IN(req, &nmp->nm_tprintf_initial_delay,
|
|
sizeof(nmp->nm_tprintf_initial_delay));
|
|
if (error)
|
|
return (error);
|
|
if (nmp->nm_tprintf_initial_delay < 0)
|
|
nmp->nm_tprintf_initial_delay = 0;
|
|
}
|
|
break;
|
|
default:
|
|
return (ENOTSUP);
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Extract the information needed by the nlm from the nfs vnode.
|
|
*/
|
|
static void
|
|
nfs_getnlminfo(struct vnode *vp, uint8_t *fhp, size_t *fhlenp,
|
|
struct sockaddr_storage *sp, int *is_v3p, off_t *sizep,
|
|
struct timeval *timeop)
|
|
{
|
|
struct nfsmount *nmp;
|
|
struct nfsnode *np = VTONFS(vp);
|
|
|
|
nmp = VFSTONFS(vp->v_mount);
|
|
if (fhlenp != NULL)
|
|
*fhlenp = (size_t)np->n_fhp->nfh_len;
|
|
if (fhp != NULL)
|
|
bcopy(np->n_fhp->nfh_fh, fhp, np->n_fhp->nfh_len);
|
|
if (sp != NULL)
|
|
bcopy(nmp->nm_nam, sp, min(nmp->nm_nam->sa_len, sizeof(*sp)));
|
|
if (is_v3p != NULL)
|
|
*is_v3p = NFS_ISV3(vp);
|
|
if (sizep != NULL)
|
|
*sizep = np->n_size;
|
|
if (timeop != NULL) {
|
|
timeop->tv_sec = nmp->nm_timeo / NFS_HZ;
|
|
timeop->tv_usec = (nmp->nm_timeo % NFS_HZ) * (1000000 / NFS_HZ);
|
|
}
|
|
}
|
|
|