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978 lines
25 KiB
C
978 lines
25 KiB
C
/* vi: set sw=4 ts=4: */
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/*
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* nfsmount.c -- Linux NFS mount
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* Copyright (C) 1993 Rick Sladkey <jrs@world.std.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* Wed Feb 8 12:51:48 1995, biro@yggdrasil.com (Ross Biro): allow all port
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* numbers to be specified on the command line.
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*
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* Fri, 8 Mar 1996 18:01:39, Swen Thuemmler <swen@uni-paderborn.de>:
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* Omit the call to connect() for Linux version 1.3.11 or later.
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*
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* Wed Oct 1 23:55:28 1997: Dick Streefland <dick_streefland@tasking.com>
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* Implemented the "bg", "fg" and "retry" mount options for NFS.
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*
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* 1999-02-22 Arkadiusz Mi¶kiewicz <misiek@misiek.eu.org>
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* - added Native Language Support
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*
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* Modified by Olaf Kirch and Trond Myklebust for new NFS code,
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* plus NFSv3 stuff.
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*/
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/*
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* nfsmount.c,v 1.1.1.1 1993/11/18 08:40:51 jrs Exp
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*/
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#include "busybox.h"
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#undef FALSE
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#undef TRUE
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#include <unistd.h>
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#include <stdio.h>
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#include <string.h>
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#include <errno.h>
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#include <netdb.h>
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#include <rpc/rpc.h>
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#include <rpc/pmap_prot.h>
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#include <rpc/pmap_clnt.h>
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#include <sys/socket.h>
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#include <sys/time.h>
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#include <sys/utsname.h>
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#include <netinet/in.h>
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#include <arpa/inet.h>
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#include "nfsmount.h"
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#include <linux/nfs.h> /* For the kernels nfs stuff */
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#ifndef NFS_FHSIZE
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static const int NFS_FHSIZE = 32;
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#endif
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#ifndef NFS_PORT
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static const int NFS_PORT = 2049;
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#endif
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/* Disable the nls stuff */
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# undef bindtextdomain
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# define bindtextdomain(Domain, Directory) /* empty */
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# undef textdomain
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# define textdomain(Domain) /* empty */
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# define _(Text) (Text)
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# define N_(Text) (Text)
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static const int MS_MGC_VAL = 0xc0ed0000; /* Magic number indicatng "new" flags */
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static const int MS_RDONLY = 1; /* Mount read-only */
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static const int MS_NOSUID = 2; /* Ignore suid and sgid bits */
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static const int MS_NODEV = 4; /* Disallow access to device special files */
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static const int MS_NOEXEC = 8; /* Disallow program execution */
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static const int MS_SYNCHRONOUS = 16; /* Writes are synced at once */
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static const int MS_REMOUNT = 32; /* Alter flags of a mounted FS */
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static const int MS_MANDLOCK = 64; /* Allow mandatory locks on an FS */
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static const int S_QUOTA = 128; /* Quota initialized for file/directory/symlink */
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static const int S_APPEND = 256; /* Append-only file */
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static const int S_IMMUTABLE = 512; /* Immutable file */
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static const int MS_NOATIME = 1024; /* Do not update access times. */
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static const int MS_NODIRATIME = 2048; /* Do not update directory access times */
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/*
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* We want to be able to compile mount on old kernels in such a way
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* that the binary will work well on more recent kernels.
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* Thus, if necessary we teach nfsmount.c the structure of new fields
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* that will come later.
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*
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* Moreover, the new kernel includes conflict with glibc includes
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* so it is easiest to ignore the kernel altogether (at compile time).
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*/
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/* NOTE: Do not make this into a 'static const int' because the pre-processor
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* needs to test this value in some #if statements. */
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#define NFS_MOUNT_VERSION 4
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struct nfs2_fh {
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char data[32];
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};
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struct nfs3_fh {
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unsigned short size;
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unsigned char data[64];
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};
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struct nfs_mount_data {
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int version; /* 1 */
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int fd; /* 1 */
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struct nfs2_fh old_root; /* 1 */
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int flags; /* 1 */
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int rsize; /* 1 */
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int wsize; /* 1 */
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int timeo; /* 1 */
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int retrans; /* 1 */
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int acregmin; /* 1 */
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int acregmax; /* 1 */
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int acdirmin; /* 1 */
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int acdirmax; /* 1 */
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struct sockaddr_in addr; /* 1 */
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char hostname[256]; /* 1 */
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int namlen; /* 2 */
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unsigned int bsize; /* 3 */
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struct nfs3_fh root; /* 4 */
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};
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/* bits in the flags field */
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static const int NFS_MOUNT_SOFT = 0x0001; /* 1 */
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static const int NFS_MOUNT_INTR = 0x0002; /* 1 */
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static const int NFS_MOUNT_SECURE = 0x0004; /* 1 */
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static const int NFS_MOUNT_POSIX = 0x0008; /* 1 */
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static const int NFS_MOUNT_NOCTO = 0x0010; /* 1 */
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static const int NFS_MOUNT_NOAC = 0x0020; /* 1 */
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static const int NFS_MOUNT_TCP = 0x0040; /* 2 */
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static const int NFS_MOUNT_VER3 = 0x0080; /* 3 */
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static const int NFS_MOUNT_KERBEROS = 0x0100; /* 3 */
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static const int NFS_MOUNT_NONLM = 0x0200; /* 3 */
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#define UTIL_LINUX_VERSION "2.10m"
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#define util_linux_version "util-linux-2.10m"
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#define HAVE_inet_aton
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#define HAVE_scsi_h
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#define HAVE_blkpg_h
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#define HAVE_kd_h
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#define HAVE_termcap
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#define HAVE_locale_h
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#define HAVE_libintl_h
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#define ENABLE_NLS
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#define HAVE_langinfo_h
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#define HAVE_progname
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#define HAVE_openpty
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#define HAVE_nanosleep
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#define HAVE_personality
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#define HAVE_tm_gmtoff
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static char *nfs_strerror(int stat);
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#define MAKE_VERSION(p,q,r) (65536*(p) + 256*(q) + (r))
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#define MAX_NFSPROT ((nfs_mount_version >= 4) ? 3 : 2)
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static const int EX_FAIL = 32; /* mount failure */
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static const int EX_BG = 256; /* retry in background (internal only) */
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/*
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* nfs_mount_version according to the sources seen at compile time.
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*/
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static int nfs_mount_version;
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/*
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* Unfortunately, the kernel prints annoying console messages
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* in case of an unexpected nfs mount version (instead of
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* just returning some error). Therefore we'll have to try
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* and figure out what version the kernel expects.
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*
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* Variables:
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* KERNEL_NFS_MOUNT_VERSION: kernel sources at compile time
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* NFS_MOUNT_VERSION: these nfsmount sources at compile time
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* nfs_mount_version: version this source and running kernel can handle
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*/
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static void
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find_kernel_nfs_mount_version(void)
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{
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static int kernel_version = 0;
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if (kernel_version)
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return;
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nfs_mount_version = NFS_MOUNT_VERSION; /* default */
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kernel_version = get_kernel_revision();
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if (kernel_version) {
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if (kernel_version < MAKE_VERSION(2,1,32))
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nfs_mount_version = 1;
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else if (kernel_version < MAKE_VERSION(2,2,18) ||
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(kernel_version >= MAKE_VERSION(2,3,0) &&
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kernel_version < MAKE_VERSION(2,3,99)))
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nfs_mount_version = 3;
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else
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nfs_mount_version = 4; /* since 2.3.99pre4 */
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}
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if (nfs_mount_version > NFS_MOUNT_VERSION)
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nfs_mount_version = NFS_MOUNT_VERSION;
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}
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static struct pmap *
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get_mountport(struct sockaddr_in *server_addr,
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long unsigned prog,
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long unsigned version,
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long unsigned proto,
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long unsigned port)
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{
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struct pmaplist *pmap;
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static struct pmap p = {0, 0, 0, 0};
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server_addr->sin_port = PMAPPORT;
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pmap = pmap_getmaps(server_addr);
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if (version > MAX_NFSPROT)
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version = MAX_NFSPROT;
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if (!prog)
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prog = MOUNTPROG;
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p.pm_prog = prog;
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p.pm_vers = version;
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p.pm_prot = proto;
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p.pm_port = port;
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while (pmap) {
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if (pmap->pml_map.pm_prog != prog)
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goto next;
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if (!version && p.pm_vers > pmap->pml_map.pm_vers)
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goto next;
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if (version > 2 && pmap->pml_map.pm_vers != version)
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goto next;
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if (version && version <= 2 && pmap->pml_map.pm_vers > 2)
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goto next;
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if (pmap->pml_map.pm_vers > MAX_NFSPROT ||
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(proto && p.pm_prot && pmap->pml_map.pm_prot != proto) ||
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(port && pmap->pml_map.pm_port != port))
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goto next;
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memcpy(&p, &pmap->pml_map, sizeof(p));
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next:
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pmap = pmap->pml_next;
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}
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if (!p.pm_vers)
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p.pm_vers = MOUNTVERS;
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if (!p.pm_port)
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p.pm_port = MOUNTPORT;
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if (!p.pm_prot)
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p.pm_prot = IPPROTO_TCP;
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return &p;
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}
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int nfsmount(const char *spec, const char *node, int *flags,
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char **extra_opts, char **mount_opts, int running_bg)
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{
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static char *prev_bg_host;
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char hostdir[1024];
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CLIENT *mclient;
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char *hostname;
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char *dirname;
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char *old_opts;
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char *mounthost=NULL;
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char new_opts[1024];
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struct timeval total_timeout;
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enum clnt_stat clnt_stat;
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static struct nfs_mount_data data;
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char *opt, *opteq;
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int val;
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struct hostent *hp;
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struct sockaddr_in server_addr;
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struct sockaddr_in mount_server_addr;
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struct pmap* pm_mnt;
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int msock, fsock;
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struct timeval retry_timeout;
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union {
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struct fhstatus nfsv2;
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struct mountres3 nfsv3;
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} status;
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struct stat statbuf;
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char *s;
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int port;
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int mountport;
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int proto;
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int bg;
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int soft;
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int intr;
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int posix;
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int nocto;
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int noac;
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int nolock;
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int retry;
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int tcp;
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int mountprog;
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int mountvers;
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int nfsprog;
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int nfsvers;
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int retval;
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time_t t;
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time_t prevt;
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time_t timeout;
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find_kernel_nfs_mount_version();
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retval = EX_FAIL;
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msock = fsock = -1;
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mclient = NULL;
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if (strlen(spec) >= sizeof(hostdir)) {
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error_msg("excessively long host:dir argument");
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goto fail;
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}
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strcpy(hostdir, spec);
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if ((s = strchr(hostdir, ':'))) {
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hostname = hostdir;
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dirname = s + 1;
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*s = '\0';
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/* Ignore all but first hostname in replicated mounts
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until they can be fully supported. (mack@sgi.com) */
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if ((s = strchr(hostdir, ','))) {
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*s = '\0';
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error_msg("warning: multiple hostnames not supported");
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}
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} else {
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error_msg("directory to mount not in host:dir format");
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goto fail;
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}
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server_addr.sin_family = AF_INET;
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#ifdef HAVE_inet_aton
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if (!inet_aton(hostname, &server_addr.sin_addr))
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#endif
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{
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if ((hp = gethostbyname(hostname)) == NULL) {
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error_msg("can't get address for %s", hostname);
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goto fail;
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} else {
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if (hp->h_length > sizeof(struct in_addr)) {
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error_msg("got bad hp->h_length");
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hp->h_length = sizeof(struct in_addr);
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}
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memcpy(&server_addr.sin_addr,
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hp->h_addr, hp->h_length);
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}
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}
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memcpy (&mount_server_addr, &server_addr, sizeof (mount_server_addr));
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/* add IP address to mtab options for use when unmounting */
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s = inet_ntoa(server_addr.sin_addr);
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old_opts = *extra_opts;
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if (!old_opts)
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old_opts = "";
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if (strlen(old_opts) + strlen(s) + 10 >= sizeof(new_opts)) {
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error_msg("excessively long option argument");
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goto fail;
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}
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sprintf(new_opts, "%s%saddr=%s",
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old_opts, *old_opts ? "," : "", s);
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*extra_opts = xstrdup(new_opts);
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/* Set default options.
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* rsize/wsize (and bsize, for ver >= 3) are left 0 in order to
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* let the kernel decide.
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* timeo is filled in after we know whether it'll be TCP or UDP. */
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memset(&data, 0, sizeof(data));
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data.retrans = 3;
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data.acregmin = 3;
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data.acregmax = 60;
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data.acdirmin = 30;
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data.acdirmax = 60;
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#if NFS_MOUNT_VERSION >= 2
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data.namlen = NAME_MAX;
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#endif
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bg = 0;
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soft = 0;
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intr = 0;
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posix = 0;
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nocto = 0;
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nolock = 0;
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noac = 0;
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retry = 10000; /* 10000 minutes ~ 1 week */
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tcp = 0;
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mountprog = MOUNTPROG;
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mountvers = 0;
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port = 0;
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mountport = 0;
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nfsprog = NFS_PROGRAM;
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nfsvers = 0;
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/* parse options */
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for (opt = strtok(old_opts, ","); opt; opt = strtok(NULL, ",")) {
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if ((opteq = strchr(opt, '='))) {
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val = atoi(opteq + 1);
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*opteq = '\0';
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if (!strcmp(opt, "rsize"))
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data.rsize = val;
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else if (!strcmp(opt, "wsize"))
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data.wsize = val;
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else if (!strcmp(opt, "timeo"))
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data.timeo = val;
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else if (!strcmp(opt, "retrans"))
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data.retrans = val;
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else if (!strcmp(opt, "acregmin"))
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data.acregmin = val;
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else if (!strcmp(opt, "acregmax"))
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data.acregmax = val;
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else if (!strcmp(opt, "acdirmin"))
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data.acdirmin = val;
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else if (!strcmp(opt, "acdirmax"))
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data.acdirmax = val;
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else if (!strcmp(opt, "actimeo")) {
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data.acregmin = val;
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data.acregmax = val;
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data.acdirmin = val;
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data.acdirmax = val;
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}
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else if (!strcmp(opt, "retry"))
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retry = val;
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else if (!strcmp(opt, "port"))
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port = val;
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else if (!strcmp(opt, "mountport"))
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mountport = val;
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else if (!strcmp(opt, "mounthost"))
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mounthost=xstrndup(opteq+1,
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strcspn(opteq+1," \t\n\r,"));
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else if (!strcmp(opt, "mountprog"))
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mountprog = val;
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else if (!strcmp(opt, "mountvers"))
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mountvers = val;
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else if (!strcmp(opt, "nfsprog"))
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nfsprog = val;
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else if (!strcmp(opt, "nfsvers") ||
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!strcmp(opt, "vers"))
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nfsvers = val;
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else if (!strcmp(opt, "proto")) {
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if (!strncmp(opteq+1, "tcp", 3))
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tcp = 1;
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else if (!strncmp(opteq+1, "udp", 3))
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tcp = 0;
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else
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printf(_("Warning: Unrecognized proto= option.\n"));
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} else if (!strcmp(opt, "namlen")) {
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#if NFS_MOUNT_VERSION >= 2
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if (nfs_mount_version >= 2)
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data.namlen = val;
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else
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#endif
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printf(_("Warning: Option namlen is not supported.\n"));
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} else if (!strcmp(opt, "addr"))
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/* ignore */;
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else {
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printf(_("unknown nfs mount parameter: "
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"%s=%d\n"), opt, val);
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goto fail;
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}
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}
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else {
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val = 1;
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if (!strncmp(opt, "no", 2)) {
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val = 0;
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opt += 2;
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}
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if (!strcmp(opt, "bg"))
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bg = val;
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else if (!strcmp(opt, "fg"))
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bg = !val;
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else if (!strcmp(opt, "soft"))
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soft = val;
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else if (!strcmp(opt, "hard"))
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soft = !val;
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else if (!strcmp(opt, "intr"))
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intr = val;
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else if (!strcmp(opt, "posix"))
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posix = val;
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else if (!strcmp(opt, "cto"))
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nocto = !val;
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else if (!strcmp(opt, "ac"))
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noac = !val;
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else if (!strcmp(opt, "tcp"))
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tcp = val;
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else if (!strcmp(opt, "udp"))
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tcp = !val;
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else if (!strcmp(opt, "lock")) {
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if (nfs_mount_version >= 3)
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nolock = !val;
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else
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printf(_("Warning: option nolock is not supported.\n"));
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} else {
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printf(_("unknown nfs mount option: "
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"%s%s\n"), val ? "" : "no", opt);
|
|
goto fail;
|
|
}
|
|
}
|
|
}
|
|
proto = (tcp) ? IPPROTO_TCP : IPPROTO_UDP;
|
|
|
|
data.flags = (soft ? NFS_MOUNT_SOFT : 0)
|
|
| (intr ? NFS_MOUNT_INTR : 0)
|
|
| (posix ? NFS_MOUNT_POSIX : 0)
|
|
| (nocto ? NFS_MOUNT_NOCTO : 0)
|
|
| (noac ? NFS_MOUNT_NOAC : 0);
|
|
#if NFS_MOUNT_VERSION >= 2
|
|
if (nfs_mount_version >= 2)
|
|
data.flags |= (tcp ? NFS_MOUNT_TCP : 0);
|
|
#endif
|
|
#if NFS_MOUNT_VERSION >= 3
|
|
if (nfs_mount_version >= 3)
|
|
data.flags |= (nolock ? NFS_MOUNT_NONLM : 0);
|
|
#endif
|
|
if (nfsvers > MAX_NFSPROT) {
|
|
error_msg("NFSv%d not supported!", nfsvers);
|
|
return 0;
|
|
}
|
|
if (mountvers > MAX_NFSPROT) {
|
|
error_msg("NFSv%d not supported!", nfsvers);
|
|
return 0;
|
|
}
|
|
if (nfsvers && !mountvers)
|
|
mountvers = (nfsvers < 3) ? 1 : nfsvers;
|
|
if (nfsvers && nfsvers < mountvers) {
|
|
mountvers = nfsvers;
|
|
}
|
|
|
|
/* Adjust options if none specified */
|
|
if (!data.timeo)
|
|
data.timeo = tcp ? 70 : 7;
|
|
|
|
#ifdef NFS_MOUNT_DEBUG
|
|
printf("rsize = %d, wsize = %d, timeo = %d, retrans = %d\n",
|
|
data.rsize, data.wsize, data.timeo, data.retrans);
|
|
printf("acreg (min, max) = (%d, %d), acdir (min, max) = (%d, %d)\n",
|
|
data.acregmin, data.acregmax, data.acdirmin, data.acdirmax);
|
|
printf("port = %d, bg = %d, retry = %d, flags = %.8x\n",
|
|
port, bg, retry, data.flags);
|
|
printf("mountprog = %d, mountvers = %d, nfsprog = %d, nfsvers = %d\n",
|
|
mountprog, mountvers, nfsprog, nfsvers);
|
|
printf("soft = %d, intr = %d, posix = %d, nocto = %d, noac = %d\n",
|
|
(data.flags & NFS_MOUNT_SOFT) != 0,
|
|
(data.flags & NFS_MOUNT_INTR) != 0,
|
|
(data.flags & NFS_MOUNT_POSIX) != 0,
|
|
(data.flags & NFS_MOUNT_NOCTO) != 0,
|
|
(data.flags & NFS_MOUNT_NOAC) != 0);
|
|
#if NFS_MOUNT_VERSION >= 2
|
|
printf("tcp = %d\n",
|
|
(data.flags & NFS_MOUNT_TCP) != 0);
|
|
#endif
|
|
#endif
|
|
|
|
data.version = nfs_mount_version;
|
|
*mount_opts = (char *) &data;
|
|
|
|
if (*flags & MS_REMOUNT)
|
|
return 0;
|
|
|
|
/*
|
|
* If the previous mount operation on the same host was
|
|
* backgrounded, and the "bg" for this mount is also set,
|
|
* give up immediately, to avoid the initial timeout.
|
|
*/
|
|
if (bg && !running_bg &&
|
|
prev_bg_host && strcmp(hostname, prev_bg_host) == 0) {
|
|
if (retry > 0)
|
|
retval = EX_BG;
|
|
return retval;
|
|
}
|
|
|
|
/* create mount deamon client */
|
|
/* See if the nfs host = mount host. */
|
|
if (mounthost) {
|
|
if (mounthost[0] >= '0' && mounthost[0] <= '9') {
|
|
mount_server_addr.sin_family = AF_INET;
|
|
mount_server_addr.sin_addr.s_addr = inet_addr(hostname);
|
|
} else {
|
|
if ((hp = gethostbyname(mounthost)) == NULL) {
|
|
error_msg("can't get address for %s", hostname);
|
|
goto fail;
|
|
} else {
|
|
if (hp->h_length > sizeof(struct in_addr)) {
|
|
error_msg("got bad hp->h_length?");
|
|
hp->h_length = sizeof(struct in_addr);
|
|
}
|
|
mount_server_addr.sin_family = AF_INET;
|
|
memcpy(&mount_server_addr.sin_addr,
|
|
hp->h_addr, hp->h_length);
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
* The following loop implements the mount retries. On the first
|
|
* call, "running_bg" is 0. When the mount times out, and the
|
|
* "bg" option is set, the exit status EX_BG will be returned.
|
|
* For a backgrounded mount, there will be a second call by the
|
|
* child process with "running_bg" set to 1.
|
|
*
|
|
* The case where the mount point is not present and the "bg"
|
|
* option is set, is treated as a timeout. This is done to
|
|
* support nested mounts.
|
|
*
|
|
* The "retry" count specified by the user is the number of
|
|
* minutes to retry before giving up.
|
|
*
|
|
* Only the first error message will be displayed.
|
|
*/
|
|
retry_timeout.tv_sec = 3;
|
|
retry_timeout.tv_usec = 0;
|
|
total_timeout.tv_sec = 20;
|
|
total_timeout.tv_usec = 0;
|
|
timeout = time(NULL) + 60 * retry;
|
|
prevt = 0;
|
|
t = 30;
|
|
val = 1;
|
|
for (;;) {
|
|
if (bg && stat(node, &statbuf) == -1) {
|
|
if (running_bg) {
|
|
sleep(val); /* 1, 2, 4, 8, 16, 30, ... */
|
|
val *= 2;
|
|
if (val > 30)
|
|
val = 30;
|
|
}
|
|
} else {
|
|
/* be careful not to use too many CPU cycles */
|
|
if (t - prevt < 30)
|
|
sleep(30);
|
|
|
|
pm_mnt = get_mountport(&mount_server_addr,
|
|
mountprog,
|
|
mountvers,
|
|
proto,
|
|
mountport);
|
|
|
|
/* contact the mount daemon via TCP */
|
|
mount_server_addr.sin_port = htons(pm_mnt->pm_port);
|
|
msock = RPC_ANYSOCK;
|
|
|
|
switch (pm_mnt->pm_prot) {
|
|
case IPPROTO_UDP:
|
|
mclient = clntudp_create(&mount_server_addr,
|
|
pm_mnt->pm_prog,
|
|
pm_mnt->pm_vers,
|
|
retry_timeout,
|
|
&msock);
|
|
if (mclient)
|
|
break;
|
|
mount_server_addr.sin_port = htons(pm_mnt->pm_port);
|
|
msock = RPC_ANYSOCK;
|
|
case IPPROTO_TCP:
|
|
mclient = clnttcp_create(&mount_server_addr,
|
|
pm_mnt->pm_prog,
|
|
pm_mnt->pm_vers,
|
|
&msock, 0, 0);
|
|
break;
|
|
default:
|
|
mclient = 0;
|
|
}
|
|
if (mclient) {
|
|
/* try to mount hostname:dirname */
|
|
mclient->cl_auth = authunix_create_default();
|
|
|
|
/* make pointers in xdr_mountres3 NULL so
|
|
* that xdr_array allocates memory for us
|
|
*/
|
|
memset(&status, 0, sizeof(status));
|
|
|
|
if (pm_mnt->pm_vers == 3)
|
|
clnt_stat = clnt_call(mclient, MOUNTPROC3_MNT,
|
|
(xdrproc_t) xdr_dirpath,
|
|
(caddr_t) &dirname,
|
|
(xdrproc_t) xdr_mountres3,
|
|
(caddr_t) &status,
|
|
total_timeout);
|
|
else
|
|
clnt_stat = clnt_call(mclient, MOUNTPROC_MNT,
|
|
(xdrproc_t) xdr_dirpath,
|
|
(caddr_t) &dirname,
|
|
(xdrproc_t) xdr_fhstatus,
|
|
(caddr_t) &status,
|
|
total_timeout);
|
|
|
|
if (clnt_stat == RPC_SUCCESS)
|
|
break; /* we're done */
|
|
if (errno != ECONNREFUSED) {
|
|
clnt_perror(mclient, "mount");
|
|
goto fail; /* don't retry */
|
|
}
|
|
if (!running_bg && prevt == 0)
|
|
clnt_perror(mclient, "mount");
|
|
auth_destroy(mclient->cl_auth);
|
|
clnt_destroy(mclient);
|
|
mclient = 0;
|
|
close(msock);
|
|
} else {
|
|
if (!running_bg && prevt == 0)
|
|
clnt_pcreateerror("mount");
|
|
}
|
|
prevt = t;
|
|
}
|
|
if (!bg)
|
|
goto fail;
|
|
if (!running_bg) {
|
|
prev_bg_host = xstrdup(hostname);
|
|
if (retry > 0)
|
|
retval = EX_BG;
|
|
goto fail;
|
|
}
|
|
t = time(NULL);
|
|
if (t >= timeout)
|
|
goto fail;
|
|
}
|
|
nfsvers = (pm_mnt->pm_vers < 2) ? 2 : pm_mnt->pm_vers;
|
|
|
|
if (nfsvers == 2) {
|
|
if (status.nfsv2.fhs_status != 0) {
|
|
error_msg("%s:%s failed, reason given by server: %s",
|
|
hostname, dirname,
|
|
nfs_strerror(status.nfsv2.fhs_status));
|
|
goto fail;
|
|
}
|
|
memcpy(data.root.data,
|
|
(char *) status.nfsv2.fhstatus_u.fhs_fhandle,
|
|
NFS_FHSIZE);
|
|
#if NFS_MOUNT_VERSION >= 4
|
|
data.root.size = NFS_FHSIZE;
|
|
memcpy(data.old_root.data,
|
|
(char *) status.nfsv2.fhstatus_u.fhs_fhandle,
|
|
NFS_FHSIZE);
|
|
#endif
|
|
} else {
|
|
#if NFS_MOUNT_VERSION >= 4
|
|
fhandle3 *fhandle;
|
|
if (status.nfsv3.fhs_status != 0) {
|
|
error_msg("%s:%s failed, reason given by server: %s",
|
|
hostname, dirname,
|
|
nfs_strerror(status.nfsv3.fhs_status));
|
|
goto fail;
|
|
}
|
|
fhandle = &status.nfsv3.mountres3_u.mountinfo.fhandle;
|
|
memset(data.old_root.data, 0, NFS_FHSIZE);
|
|
memset(&data.root, 0, sizeof(data.root));
|
|
data.root.size = fhandle->fhandle3_len;
|
|
memcpy(data.root.data,
|
|
(char *) fhandle->fhandle3_val,
|
|
fhandle->fhandle3_len);
|
|
|
|
data.flags |= NFS_MOUNT_VER3;
|
|
#endif
|
|
}
|
|
|
|
/* create nfs socket for kernel */
|
|
|
|
if (tcp) {
|
|
if (nfs_mount_version < 3) {
|
|
printf(_("NFS over TCP is not supported.\n"));
|
|
goto fail;
|
|
}
|
|
fsock = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
|
|
} else
|
|
fsock = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
|
|
if (fsock < 0) {
|
|
perror(_("nfs socket"));
|
|
goto fail;
|
|
}
|
|
if (bindresvport(fsock, 0) < 0) {
|
|
perror(_("nfs bindresvport"));
|
|
goto fail;
|
|
}
|
|
if (port == 0) {
|
|
server_addr.sin_port = PMAPPORT;
|
|
port = pmap_getport(&server_addr, nfsprog, nfsvers,
|
|
tcp ? IPPROTO_TCP : IPPROTO_UDP);
|
|
if (port == 0)
|
|
port = NFS_PORT;
|
|
#ifdef NFS_MOUNT_DEBUG
|
|
else
|
|
printf(_("used portmapper to find NFS port\n"));
|
|
#endif
|
|
}
|
|
#ifdef NFS_MOUNT_DEBUG
|
|
printf(_("using port %d for nfs deamon\n"), port);
|
|
#endif
|
|
server_addr.sin_port = htons(port);
|
|
/*
|
|
* connect() the socket for kernels 1.3.10 and below only,
|
|
* to avoid problems with multihomed hosts.
|
|
* --Swen
|
|
*/
|
|
if (get_kernel_revision() <= 66314
|
|
&& connect(fsock, (struct sockaddr *) &server_addr,
|
|
sizeof (server_addr)) < 0) {
|
|
perror(_("nfs connect"));
|
|
goto fail;
|
|
}
|
|
|
|
/* prepare data structure for kernel */
|
|
|
|
data.fd = fsock;
|
|
memcpy((char *) &data.addr, (char *) &server_addr, sizeof(data.addr));
|
|
strncpy(data.hostname, hostname, sizeof(data.hostname));
|
|
|
|
/* clean up */
|
|
|
|
auth_destroy(mclient->cl_auth);
|
|
clnt_destroy(mclient);
|
|
close(msock);
|
|
return 0;
|
|
|
|
/* abort */
|
|
|
|
fail:
|
|
if (msock != -1) {
|
|
if (mclient) {
|
|
auth_destroy(mclient->cl_auth);
|
|
clnt_destroy(mclient);
|
|
}
|
|
close(msock);
|
|
}
|
|
if (fsock != -1)
|
|
close(fsock);
|
|
return retval;
|
|
}
|
|
|
|
/*
|
|
* We need to translate between nfs status return values and
|
|
* the local errno values which may not be the same.
|
|
*
|
|
* Andreas Schwab <schwab@LS5.informatik.uni-dortmund.de>: change errno:
|
|
* "after #include <errno.h> the symbol errno is reserved for any use,
|
|
* it cannot even be used as a struct tag or field name".
|
|
*/
|
|
|
|
#ifndef EDQUOT
|
|
#define EDQUOT ENOSPC
|
|
#endif
|
|
|
|
static struct {
|
|
enum nfs_stat stat;
|
|
int errnum;
|
|
} nfs_errtbl[] = {
|
|
{ NFS_OK, 0 },
|
|
{ NFSERR_PERM, EPERM },
|
|
{ NFSERR_NOENT, ENOENT },
|
|
{ NFSERR_IO, EIO },
|
|
{ NFSERR_NXIO, ENXIO },
|
|
{ NFSERR_ACCES, EACCES },
|
|
{ NFSERR_EXIST, EEXIST },
|
|
{ NFSERR_NODEV, ENODEV },
|
|
{ NFSERR_NOTDIR, ENOTDIR },
|
|
{ NFSERR_ISDIR, EISDIR },
|
|
#ifdef NFSERR_INVAL
|
|
{ NFSERR_INVAL, EINVAL }, /* that Sun forgot */
|
|
#endif
|
|
{ NFSERR_FBIG, EFBIG },
|
|
{ NFSERR_NOSPC, ENOSPC },
|
|
{ NFSERR_ROFS, EROFS },
|
|
{ NFSERR_NAMETOOLONG, ENAMETOOLONG },
|
|
{ NFSERR_NOTEMPTY, ENOTEMPTY },
|
|
{ NFSERR_DQUOT, EDQUOT },
|
|
{ NFSERR_STALE, ESTALE },
|
|
#ifdef EWFLUSH
|
|
{ NFSERR_WFLUSH, EWFLUSH },
|
|
#endif
|
|
/* Throw in some NFSv3 values for even more fun (HP returns these) */
|
|
{ 71, EREMOTE },
|
|
|
|
{ -1, EIO }
|
|
};
|
|
|
|
static char *nfs_strerror(int stat)
|
|
{
|
|
int i;
|
|
static char buf[256];
|
|
|
|
for (i = 0; nfs_errtbl[i].stat != -1; i++) {
|
|
if (nfs_errtbl[i].stat == stat)
|
|
return strerror(nfs_errtbl[i].errnum);
|
|
}
|
|
sprintf(buf, _("unknown nfs status return value: %d"), stat);
|
|
return buf;
|
|
}
|
|
|
|
bool_t
|
|
xdr_fhandle (XDR *xdrs, fhandle objp)
|
|
{
|
|
//register int32_t *buf;
|
|
|
|
if (!xdr_opaque (xdrs, objp, FHSIZE))
|
|
return FALSE;
|
|
return TRUE;
|
|
}
|
|
|
|
bool_t
|
|
xdr_fhstatus (XDR *xdrs, fhstatus *objp)
|
|
{
|
|
//register int32_t *buf;
|
|
|
|
if (!xdr_u_int (xdrs, &objp->fhs_status))
|
|
return FALSE;
|
|
switch (objp->fhs_status) {
|
|
case 0:
|
|
if (!xdr_fhandle (xdrs, objp->fhstatus_u.fhs_fhandle))
|
|
return FALSE;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
return TRUE;
|
|
}
|
|
|
|
bool_t
|
|
xdr_dirpath (XDR *xdrs, dirpath *objp)
|
|
{
|
|
//register int32_t *buf;
|
|
|
|
if (!xdr_string (xdrs, objp, MNTPATHLEN))
|
|
return FALSE;
|
|
return TRUE;
|
|
}
|
|
|
|
bool_t
|
|
xdr_fhandle3 (XDR *xdrs, fhandle3 *objp)
|
|
{
|
|
//register int32_t *buf;
|
|
|
|
if (!xdr_bytes (xdrs, (char **)&objp->fhandle3_val, (u_int *) &objp->fhandle3_len, FHSIZE3))
|
|
return FALSE;
|
|
return TRUE;
|
|
}
|
|
|
|
bool_t
|
|
xdr_mountres3_ok (XDR *xdrs, mountres3_ok *objp)
|
|
{
|
|
//register int32_t *buf;
|
|
|
|
if (!xdr_fhandle3 (xdrs, &objp->fhandle))
|
|
return FALSE;
|
|
if (!xdr_array (xdrs, (char **)&objp->auth_flavours.auth_flavours_val, (u_int *) &objp->auth_flavours.auth_flavours_len, ~0,
|
|
sizeof (int), (xdrproc_t) xdr_int))
|
|
return FALSE;
|
|
return TRUE;
|
|
}
|
|
|
|
bool_t
|
|
xdr_mountstat3 (XDR *xdrs, mountstat3 *objp)
|
|
{
|
|
//register int32_t *buf;
|
|
|
|
if (!xdr_enum (xdrs, (enum_t *) objp))
|
|
return FALSE;
|
|
return TRUE;
|
|
}
|
|
|
|
bool_t
|
|
xdr_mountres3 (XDR *xdrs, mountres3 *objp)
|
|
{
|
|
//register int32_t *buf;
|
|
|
|
if (!xdr_mountstat3 (xdrs, &objp->fhs_status))
|
|
return FALSE;
|
|
switch (objp->fhs_status) {
|
|
case MNT_OK:
|
|
if (!xdr_mountres3_ok (xdrs, &objp->mountres3_u.mountinfo))
|
|
return FALSE;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
return TRUE;
|
|
}
|
|
|