imported original firmware WRT54GL_v4.30.11_11_US

1 files changed, 977 insertions, 0 deletions

diff --git a/release/src/router/busybox/nfsmount.c b/release/src/router/busybox/nfsmount.c
new file mode 100644
index 00000000..cd722acc
--- /dev/null
+++ b/release/src/router/busybox/nfsmount.c
@@ -0,0 +1,977 @@
+/* vi: set sw=4 ts=4: */
+/*
+ * nfsmount.c -- Linux NFS mount
+ * Copyright (C) 1993 Rick Sladkey <jrs@world.std.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * Wed Feb  8 12:51:48 1995, biro@yggdrasil.com (Ross Biro): allow all port
+ * numbers to be specified on the command line.
+ *
+ * Fri, 8 Mar 1996 18:01:39, Swen Thuemmler <swen@uni-paderborn.de>:
+ * Omit the call to connect() for Linux version 1.3.11 or later.
+ *
+ * Wed Oct  1 23:55:28 1997: Dick Streefland <dick_streefland@tasking.com>
+ * Implemented the "bg", "fg" and "retry" mount options for NFS.
+ *
+ * 1999-02-22 Arkadiusz Mi¶kiewicz <misiek@misiek.eu.org>
+ * - added Native Language Support
+ * 
+ * Modified by Olaf Kirch and Trond Myklebust for new NFS code,
+ * plus NFSv3 stuff.
+ */
+
+/*
+ * nfsmount.c,v 1.1.1.1 1993/11/18 08:40:51 jrs Exp
+ */
+
+#include <unistd.h>
+#include <stdio.h>
+#include <string.h>
+#include <errno.h>
+#include <netdb.h>
+#include <sys/socket.h>
+#include <time.h>
+#include <sys/utsname.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#include <stdlib.h>
+#include "busybox.h"
+#undef TRUE
+#undef FALSE
+#include <rpc/rpc.h>
+#include <rpc/pmap_prot.h>
+#include <rpc/pmap_clnt.h>
+#include <linux/nfs.h>  /* For the kernels nfs stuff */
+#include "nfsmount.h"
+
+#ifndef NFS_FHSIZE
+static const int NFS_FHSIZE = 32;
+#endif
+#ifndef NFS_PORT
+static const int NFS_PORT = 2049;
+#endif
+
+/* Disable the nls stuff */
+# undef bindtextdomain
+# define bindtextdomain(Domain, Directory) /* empty */
+# undef textdomain
+# define textdomain(Domain) /* empty */
+# define _(Text) (Text)
+# define N_(Text) (Text)
+
+static const int MS_MGC_VAL = 0xc0ed0000; /* Magic number indicatng "new" flags */
+static const int MS_RDONLY = 1;      /* Mount read-only */
+static const int MS_NOSUID = 2;      /* Ignore suid and sgid bits */
+static const int MS_NODEV = 4;      /* Disallow access to device special files */
+static const int MS_NOEXEC = 8;      /* Disallow program execution */
+static const int MS_SYNCHRONOUS = 16;      /* Writes are synced at once */
+static const int MS_REMOUNT = 32;      /* Alter flags of a mounted FS */
+static const int MS_MANDLOCK = 64;      /* Allow mandatory locks on an FS */
+static const int S_QUOTA = 128;     /* Quota initialized for file/directory/symlink */
+static const int S_APPEND = 256;     /* Append-only file */
+static const int S_IMMUTABLE = 512;     /* Immutable file */
+static const int MS_NOATIME = 1024;    /* Do not update access times. */
+static const int MS_NODIRATIME = 2048;    /* Do not update directory access times */
+
+
+/*
+ * We want to be able to compile mount on old kernels in such a way
+ * that the binary will work well on more recent kernels.
+ * Thus, if necessary we teach nfsmount.c the structure of new fields
+ * that will come later.
+ *
+ * Moreover, the new kernel includes conflict with glibc includes
+ * so it is easiest to ignore the kernel altogether (at compile time).
+ */
+
+/* NOTE: Do not make this into a 'static const int' because the pre-processor
+ * needs to test this value in some #if statements. */
+#define NFS_MOUNT_VERSION 4
+
+struct nfs2_fh {
+        char                    data[32];
+};
+struct nfs3_fh {
+        unsigned short          size;
+        unsigned char           data[64];
+};
+
+struct nfs_mount_data {
+	int		version;		/* 1 */
+	int		fd;			/* 1 */
+	struct nfs2_fh	old_root;		/* 1 */
+	int		flags;			/* 1 */
+	int		rsize;			/* 1 */
+	int		wsize;			/* 1 */
+	int		timeo;			/* 1 */
+	int		retrans;		/* 1 */
+	int		acregmin;		/* 1 */
+	int		acregmax;		/* 1 */
+	int		acdirmin;		/* 1 */
+	int		acdirmax;		/* 1 */
+	struct sockaddr_in addr;		/* 1 */
+	char		hostname[256];		/* 1 */
+	int		namlen;			/* 2 */
+	unsigned int	bsize;			/* 3 */
+	struct nfs3_fh	root;			/* 4 */
+};
+
+/* bits in the flags field */
+
+static const int NFS_MOUNT_SOFT = 0x0001;	/* 1 */
+static const int NFS_MOUNT_INTR = 0x0002;	/* 1 */
+static const int NFS_MOUNT_SECURE = 0x0004;	/* 1 */
+static const int NFS_MOUNT_POSIX = 0x0008;	/* 1 */
+static const int NFS_MOUNT_NOCTO = 0x0010;	/* 1 */
+static const int NFS_MOUNT_NOAC = 0x0020;	/* 1 */
+static const int NFS_MOUNT_TCP = 0x0040;	/* 2 */
+static const int NFS_MOUNT_VER3 = 0x0080;	/* 3 */
+static const int NFS_MOUNT_KERBEROS = 0x0100;	/* 3 */
+static const int NFS_MOUNT_NONLM = 0x0200;	/* 3 */
+
+
+#define UTIL_LINUX_VERSION "2.10m"
+#define util_linux_version "util-linux-2.10m"
+
+#define HAVE_inet_aton
+#define HAVE_scsi_h
+#define HAVE_blkpg_h
+#define HAVE_kd_h
+#define HAVE_termcap
+#define HAVE_locale_h
+#define HAVE_libintl_h
+#define ENABLE_NLS
+#define HAVE_langinfo_h
+#define HAVE_progname
+#define HAVE_openpty
+#define HAVE_nanosleep
+#define HAVE_personality
+#define HAVE_tm_gmtoff
+
+static char *nfs_strerror(int status);
+
+#define MAKE_VERSION(p,q,r)	(65536*(p) + 256*(q) + (r))
+#define MAX_NFSPROT ((nfs_mount_version >= 4) ? 3 : 2)
+
+static const int EX_FAIL = 32;       /* mount failure */
+static const int EX_BG = 256;       /* retry in background (internal only) */
+
+
+/*
+ * nfs_mount_version according to the sources seen at compile time.
+ */
+static int nfs_mount_version;
+
+/*
+ * Unfortunately, the kernel prints annoying console messages
+ * in case of an unexpected nfs mount version (instead of
+ * just returning some error).  Therefore we'll have to try
+ * and figure out what version the kernel expects.
+ *
+ * Variables:
+ *	KERNEL_NFS_MOUNT_VERSION: kernel sources at compile time
+ *	NFS_MOUNT_VERSION: these nfsmount sources at compile time
+ *	nfs_mount_version: version this source and running kernel can handle
+ */
+static void
+find_kernel_nfs_mount_version(void)
+{
+	static int kernel_version = 0;
+
+	if (kernel_version)
+		return;
+
+	nfs_mount_version = NFS_MOUNT_VERSION; /* default */
+
+	kernel_version = get_kernel_revision();
+	if (kernel_version) {
+		if (kernel_version < MAKE_VERSION(2,1,32))
+			nfs_mount_version = 1;
+		else if (kernel_version < MAKE_VERSION(2,2,18) ||
+				(kernel_version >=   MAKE_VERSION(2,3,0) &&
+				 kernel_version < MAKE_VERSION(2,3,99)))
+			nfs_mount_version = 3;
+		else
+			nfs_mount_version = 4; /* since 2.3.99pre4 */
+	}
+	if (nfs_mount_version > NFS_MOUNT_VERSION)
+		nfs_mount_version = NFS_MOUNT_VERSION;
+}
+
+static struct pmap *
+get_mountport(struct sockaddr_in *server_addr,
+      long unsigned prog,
+      long unsigned version,
+      long unsigned proto,
+      long unsigned port)
+{
+struct pmaplist *pmap;
+static struct pmap p = {0, 0, 0, 0};
+
+server_addr->sin_port = PMAPPORT;
+pmap = pmap_getmaps(server_addr);
+
+if (version > MAX_NFSPROT)
+	version = MAX_NFSPROT;
+if (!prog)
+	prog = MOUNTPROG;
+p.pm_prog = prog;
+p.pm_vers = version;
+p.pm_prot = proto;
+p.pm_port = port;
+
+while (pmap) {
+	if (pmap->pml_map.pm_prog != prog)
+		goto next;
+	if (!version && p.pm_vers > pmap->pml_map.pm_vers)
+		goto next;
+	if (version > 2 && pmap->pml_map.pm_vers != version)
+		goto next;
+	if (version && version <= 2 && pmap->pml_map.pm_vers > 2)
+		goto next;
+	if (pmap->pml_map.pm_vers > MAX_NFSPROT ||
+	    (proto && p.pm_prot && pmap->pml_map.pm_prot != proto) ||
+	    (port && pmap->pml_map.pm_port != port))
+		goto next;
+	memcpy(&p, &pmap->pml_map, sizeof(p));
+next:
+	pmap = pmap->pml_next;
+}
+if (!p.pm_vers)
+	p.pm_vers = MOUNTVERS;
+if (!p.pm_port)
+	p.pm_port = MOUNTPORT;
+if (!p.pm_prot)
+	p.pm_prot = IPPROTO_TCP;
+return &p;
+}
+
+int nfsmount(const char *spec, const char *node, int *flags,
+	     char **extra_opts, char **mount_opts, int running_bg)
+{
+	static char *prev_bg_host;
+	char hostdir[1024];
+	CLIENT *mclient;
+	char *hostname;
+	char *pathname;
+	char *old_opts;
+	char *mounthost=NULL;
+	char new_opts[1024];
+	struct timeval total_timeout;
+	enum clnt_stat clnt_stat;
+	static struct nfs_mount_data data;
+	char *opt, *opteq;
+	int val;
+	struct hostent *hp;
+	struct sockaddr_in server_addr;
+	struct sockaddr_in mount_server_addr;
+	struct pmap* pm_mnt;
+	int msock, fsock;
+	struct timeval retry_timeout;
+	union {
+		struct fhstatus nfsv2;
+		struct mountres3 nfsv3;
+	} status;
+	struct stat statbuf;
+	char *s;
+	int port;
+	int mountport;
+	int proto;
+	int bg;
+	int soft;
+	int intr;
+	int posix;
+	int nocto;
+	int noac;
+	int nolock;
+	int retry;
+	int tcp;
+	int mountprog;
+	int mountvers;
+	int nfsprog;
+	int nfsvers;
+	int retval;
+	time_t t;
+	time_t prevt;
+	time_t timeout;
+
+	find_kernel_nfs_mount_version();
+
+	retval = EX_FAIL;
+	msock = fsock = -1;
+	mclient = NULL;
+	if (strlen(spec) >= sizeof(hostdir)) {
+		error_msg("excessively long host:dir argument");
+		goto fail;
+	}
+	strcpy(hostdir, spec);
+	if ((s = strchr(hostdir, ':'))) {
+		hostname = hostdir;
+		pathname = s + 1;
+		*s = '\0';
+		/* Ignore all but first hostname in replicated mounts
+		   until they can be fully supported. (mack@sgi.com) */
+		if ((s = strchr(hostdir, ','))) {
+			*s = '\0';
+			error_msg("warning: multiple hostnames not supported");
+		}
+	} else {
+		error_msg("directory to mount not in host:dir format");
+		goto fail;
+	}
+
+	server_addr.sin_family = AF_INET;
+#ifdef HAVE_inet_aton
+	if (!inet_aton(hostname, &server_addr.sin_addr))
+#endif
+	{
+		if ((hp = gethostbyname(hostname)) == NULL) {
+			herror_msg("%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);
+			}
+			memcpy(&server_addr.sin_addr,
+			       hp->h_addr, hp->h_length);
+		}
+	}
+
+	memcpy (&mount_server_addr, &server_addr, sizeof (mount_server_addr));
+
+	/* add IP address to mtab options for use when unmounting */
+
+	s = inet_ntoa(server_addr.sin_addr);
+	old_opts = *extra_opts;
+	if (!old_opts)
+		old_opts = "";
+	if (strlen(old_opts) + strlen(s) + 10 >= sizeof(new_opts)) {
+		error_msg("excessively long option argument");
+		goto fail;
+	}
+	sprintf(new_opts, "%s%saddr=%s",
+		old_opts, *old_opts ? "," : "", s);
+	*extra_opts = xstrdup(new_opts);
+
+	/* Set default options.
+	 * rsize/wsize (and bsize, for ver >= 3) are left 0 in order to
+	 * let the kernel decide.
+	 * timeo is filled in after we know whether it'll be TCP or UDP. */
+	memset(&data, 0, sizeof(data));
+	data.retrans	= 3;
+	data.acregmin	= 3;
+	data.acregmax	= 60;
+	data.acdirmin	= 30;
+	data.acdirmax	= 60;
+#if NFS_MOUNT_VERSION >= 2
+	data.namlen	= NAME_MAX;
+#endif
+
+	bg = 0;
+	soft = 0;
+	intr = 0;
+	posix = 0;
+	nocto = 0;
+	nolock = 0;
+	noac = 0;
+	retry = 10000;		/* 10000 minutes ~ 1 week */
+	tcp = 0;
+
+	mountprog = MOUNTPROG;
+	mountvers = 0;
+	port = 0;
+	mountport = 0;
+	nfsprog = NFS_PROGRAM;
+	nfsvers = 0;
+
+	/* parse options */
+
+	for (opt = strtok(old_opts, ","); opt; opt = strtok(NULL, ",")) {
+		if ((opteq = strchr(opt, '='))) {
+			val = atoi(opteq + 1);	
+			*opteq = '\0';
+			if (!strcmp(opt, "rsize"))
+				data.rsize = val;
+			else if (!strcmp(opt, "wsize"))
+				data.wsize = val;
+			else if (!strcmp(opt, "timeo"))
+				data.timeo = val;
+			else if (!strcmp(opt, "retrans"))
+				data.retrans = val;
+			else if (!strcmp(opt, "acregmin"))
+				data.acregmin = val;
+			else if (!strcmp(opt, "acregmax"))
+				data.acregmax = val;
+			else if (!strcmp(opt, "acdirmin"))
+				data.acdirmin = val;
+			else if (!strcmp(opt, "acdirmax"))
+				data.acdirmax = val;
+			else if (!strcmp(opt, "actimeo")) {
+				data.acregmin = val;
+				data.acregmax = val;
+				data.acdirmin = val;
+				data.acdirmax = val;
+			}
+			else if (!strcmp(opt, "retry"))
+				retry = val;
+			else if (!strcmp(opt, "port"))
+				port = val;
+			else if (!strcmp(opt, "mountport"))
+			        mountport = val;
+			else if (!strcmp(opt, "mounthost"))
+			        mounthost=xstrndup(opteq+1,
+						  strcspn(opteq+1," \t\n\r,"));
+			else if (!strcmp(opt, "mountprog"))
+				mountprog = val;
+			else if (!strcmp(opt, "mountvers"))
+				mountvers = val;
+			else if (!strcmp(opt, "nfsprog"))
+				nfsprog = val;
+			else if (!strcmp(opt, "nfsvers") ||
+				 !strcmp(opt, "vers"))
+				nfsvers = val;
+			else if (!strcmp(opt, "proto")) {
+				if (!strncmp(opteq+1, "tcp", 3))
+					tcp = 1;
+				else if (!strncmp(opteq+1, "udp", 3))
+					tcp = 0;
+				else
+					printf(_("Warning: Unrecognized proto= option.\n"));
+			} else if (!strcmp(opt, "namlen")) {
+#if NFS_MOUNT_VERSION >= 2
+				if (nfs_mount_version >= 2)
+					data.namlen = val;
+				else
+#endif
+				printf(_("Warning: Option namlen is not supported.\n"));
+			} else if (!strcmp(opt, "addr"))
+				/* ignore */;
+			else {
+				printf(_("unknown nfs mount parameter: "
+				       "%s=%d\n"), opt, val);
+				goto fail;
+			}
+		}
+		else {
+			val = 1;
+			if (!strncmp(opt, "no", 2)) {
+				val = 0;
+				opt += 2;
+			}
+			if (!strcmp(opt, "bg")) 
+				bg = val;
+			else if (!strcmp(opt, "fg")) 
+				bg = !val;
+			else if (!strcmp(opt, "soft"))
+				soft = val;
+			else if (!strcmp(opt, "hard"))
+				soft = !val;
+			else if (!strcmp(opt, "intr"))
+				intr = val;
+			else if (!strcmp(opt, "posix"))
+				posix = val;
+			else if (!strcmp(opt, "cto"))
+				nocto = !val;
+			else if (!strcmp(opt, "ac"))
+				noac = !val;
+			else if (!strcmp(opt, "tcp"))
+				tcp = val;
+			else if (!strcmp(opt, "udp"))
+				tcp = !val;
+			else if (!strcmp(opt, "lock")) {
+				if (nfs_mount_version >= 3)
+					nolock = !val;
+				else
+					printf(_("Warning: option nolock is not supported.\n"));
+			} else {
+				printf(_("unknown nfs mount option: "
+					   "%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) {
+			  herror_msg("%s", mounthost);
+			  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:pathname */
+				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) &pathname,
+						      (xdrproc_t) xdr_mountres3,
+						      (caddr_t) &status,
+					total_timeout);
+			else
+				clnt_stat = clnt_call(mclient, MOUNTPROC_MNT,
+						      (xdrproc_t) xdr_dirpath,
+						      (caddr_t) &pathname,
+						      (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, pathname,
+				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 *my_fhandle;
+		if (status.nfsv3.fhs_status != 0) {
+			error_msg("%s:%s failed, reason given by server: %s",
+				hostname, pathname,
+				nfs_strerror(status.nfsv3.fhs_status));
+			goto fail;
+		}
+		my_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 = my_fhandle->fhandle3_len;
+		memcpy(data.root.data,
+		       (char *) my_fhandle->fhandle3_val,
+		       my_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 status)
+{
+	int i;
+	static char buf[256];
+
+	for (i = 0; nfs_errtbl[i].stat != -1; i++) {
+		if (nfs_errtbl[i].stat == status)
+			return strerror(nfs_errtbl[i].errnum);
+	}
+	sprintf(buf, _("unknown nfs status return value: %d"), status);
+	return buf;
+}
+
+static 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;
+}
+