mount: move code from nfsmount.c into mount.c

1 files changed, 0 insertions, 1022 deletions

diff --git a/util-linux/nfsmount.c b/util-linux/nfsmount.c
deleted file mode 100644
index 4e523b5f3..000000000
--- a/util-linux/nfsmount.c
+++ /dev/null
@@ -1,1022 +0,0 @@
-/* vi: set sw=4 ts=4: */
-/*
- * nfsmount.c -- Linux NFS mount
- * Copyright (C) 1993 Rick Sladkey <jrs@world.std.com>
- *
- * Licensed under GPLv2 or later, see file LICENSE in this tarball for 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.
- */
-
-#include "busybox.h"
-#include <syslog.h>
-#include <mntent.h>
-#include <sys/utsname.h>
-#undef TRUE
-#undef FALSE
-#include <rpc/rpc.h>
-#include <rpc/pmap_prot.h>
-#include <rpc/pmap_clnt.h>
-
-/* This is just a warning of a common mistake.  Possibly this should be a
- * uclibc faq entry rather than in busybox... */
-#if ENABLE_FEATURE_MOUNT_NFS && defined(__UCLIBC__) && ! defined(__UCLIBC_HAS_RPC__)
-#error "You need to build uClibc with UCLIBC_HAS_RPC for NFS support."
-#endif
-
-/* former nfsmount.h */
-
-#define MOUNTPORT 635
-#define MNTPATHLEN 1024
-#define MNTNAMLEN 255
-#define FHSIZE 32
-#define FHSIZE3 64
-
-typedef char fhandle[FHSIZE];
-
-typedef struct {
-	unsigned int fhandle3_len;
-	char *fhandle3_val;
-} fhandle3;
-
-enum mountstat3 {
-	MNT_OK = 0,
-	MNT3ERR_PERM = 1,
-	MNT3ERR_NOENT = 2,
-	MNT3ERR_IO = 5,
-	MNT3ERR_ACCES = 13,
-	MNT3ERR_NOTDIR = 20,
-	MNT3ERR_INVAL = 22,
-	MNT3ERR_NAMETOOLONG = 63,
-	MNT3ERR_NOTSUPP = 10004,
-	MNT3ERR_SERVERFAULT = 10006,
-};
-typedef enum mountstat3 mountstat3;
-
-struct fhstatus {
-	unsigned int fhs_status;
-	union {
-		fhandle fhs_fhandle;
-	} fhstatus_u;
-};
-typedef struct fhstatus fhstatus;
-
-struct mountres3_ok {
-	fhandle3 fhandle;
-	struct {
-		unsigned int auth_flavours_len;
-		char *auth_flavours_val;
-	} auth_flavours;
-};
-typedef struct mountres3_ok mountres3_ok;
-
-struct mountres3 {
-	mountstat3 fhs_status;
-	union {
-		mountres3_ok mountinfo;
-	} mountres3_u;
-};
-typedef struct mountres3 mountres3;
-
-typedef char *dirpath;
-
-typedef char *name;
-
-typedef struct mountbody *mountlist;
-
-struct mountbody {
-	name ml_hostname;
-	dirpath ml_directory;
-	mountlist ml_next;
-};
-typedef struct mountbody mountbody;
-
-typedef struct groupnode *groups;
-
-struct groupnode {
-	name gr_name;
-	groups gr_next;
-};
-typedef struct groupnode groupnode;
-
-typedef struct exportnode *exports;
-
-struct exportnode {
-	dirpath ex_dir;
-	groups ex_groups;
-	exports ex_next;
-};
-typedef struct exportnode exportnode;
-
-struct ppathcnf {
-	int pc_link_max;
-	short pc_max_canon;
-	short pc_max_input;
-	short pc_name_max;
-	short pc_path_max;
-	short pc_pipe_buf;
-	u_char pc_vdisable;
-	char pc_xxx;
-	short pc_mask[2];
-};
-typedef struct ppathcnf ppathcnf;
-
-#define MOUNTPROG 100005
-#define MOUNTVERS 1
-
-#define MOUNTPROC_NULL 0
-#define MOUNTPROC_MNT 1
-#define MOUNTPROC_DUMP 2
-#define MOUNTPROC_UMNT 3
-#define MOUNTPROC_UMNTALL 4
-#define MOUNTPROC_EXPORT 5
-#define MOUNTPROC_EXPORTALL 6
-
-#define MOUNTVERS_POSIX 2
-
-#define MOUNTPROC_PATHCONF 7
-
-#define MOUNT_V3 3
-
-#define MOUNTPROC3_NULL 0
-#define MOUNTPROC3_MNT 1
-#define MOUNTPROC3_DUMP 2
-#define MOUNTPROC3_UMNT 3
-#define MOUNTPROC3_UMNTALL 4
-#define MOUNTPROC3_EXPORT 5
-
-/* former nfsmount.h ends */
-
-enum {
-#ifndef NFS_FHSIZE
-	NFS_FHSIZE = 32,
-#endif
-#ifndef NFS_PORT
-	NFS_PORT = 2049
-#endif
-};
-
-//enum {
-//	S_QUOTA = 128,     /* Quota initialized for file/directory/symlink */
-//};
-
-
-/*
- * 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).
- */
-
-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 */
-enum {
-	NFS_MOUNT_SOFT = 0x0001,	/* 1 */
-	NFS_MOUNT_INTR = 0x0002,	/* 1 */
-	NFS_MOUNT_SECURE = 0x0004,	/* 1 */
-	NFS_MOUNT_POSIX = 0x0008,	/* 1 */
-	NFS_MOUNT_NOCTO = 0x0010,	/* 1 */
-	NFS_MOUNT_NOAC = 0x0020,	/* 1 */
-	NFS_MOUNT_TCP = 0x0040,		/* 2 */
-	NFS_MOUNT_VER3 = 0x0080,	/* 3 */
-	NFS_MOUNT_KERBEROS = 0x0100,	/* 3 */
-	NFS_MOUNT_NONLM = 0x0200	/* 3 */
-};
-
-#define HAVE_inet_aton
-
-/*
- * 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
-
-// Convert each NFSERR_BLAH into EBLAH
-
-static const struct {
-	int stat;
-	int errnum;
-} nfs_errtbl[] = {
-	{0,0}, {1,EPERM}, {2,ENOENT}, {5,EIO}, {6,ENXIO}, {13,EACCES}, {17,EEXIST},
-	{19,ENODEV}, {20,ENOTDIR}, {21,EISDIR}, {22,EINVAL}, {27,EFBIG},
-	{28,ENOSPC}, {30,EROFS}, {63,ENAMETOOLONG}, {66,ENOTEMPTY}, {69,EDQUOT},
-	{70,ESTALE}, {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)
-{
-	if (!xdr_opaque(xdrs, objp, FHSIZE))
-		 return FALSE;
-	return TRUE;
-}
-
-static bool_t xdr_fhstatus(XDR *xdrs, fhstatus *objp)
-{
-	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;
-}
-
-static bool_t xdr_dirpath(XDR *xdrs, dirpath *objp)
-{
-	if (!xdr_string(xdrs, objp, MNTPATHLEN))
-		 return FALSE;
-	return TRUE;
-}
-
-static bool_t xdr_fhandle3(XDR *xdrs, fhandle3 *objp)
-{
-	if (!xdr_bytes(xdrs, (char **)&objp->fhandle3_val, (unsigned int *) &objp->fhandle3_len, FHSIZE3))
-		 return FALSE;
-	return TRUE;
-}
-
-static bool_t xdr_mountres3_ok(XDR *xdrs, mountres3_ok *objp)
-{
-	if (!xdr_fhandle3(xdrs, &objp->fhandle))
-		return FALSE;
-	if (!xdr_array(xdrs, &(objp->auth_flavours.auth_flavours_val), &(objp->auth_flavours.auth_flavours_len), ~0,
-				sizeof (int), (xdrproc_t) xdr_int))
-		return FALSE;
-	return TRUE;
-}
-
-static bool_t xdr_mountstat3(XDR *xdrs, mountstat3 *objp)
-{
-	if (!xdr_enum(xdrs, (enum_t *) objp))
-		 return FALSE;
-	return TRUE;
-}
-
-static bool_t xdr_mountres3(XDR *xdrs, mountres3 *objp)
-{
-	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;
-}
-
-#define MAX_NFSPROT ((nfs_mount_version >= 4) ? 3 : 2)
-
-/*
- * nfs_mount_version according to the sources seen at compile time.
- */
-static int nfs_mount_version;
-static int kernel_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)
-{
-	if (kernel_version)
-		return;
-
-	nfs_mount_version = 4; /* default */
-
-	kernel_version = get_linux_version_code();
-	if (kernel_version) {
-		if (kernel_version < KERNEL_VERSION(2,1,32))
-			nfs_mount_version = 1;
-		else if (kernel_version < KERNEL_VERSION(2,2,18) ||
-				(kernel_version >= KERNEL_VERSION(2,3,0) &&
-				 kernel_version < KERNEL_VERSION(2,3,99)))
-			nfs_mount_version = 3;
-		/* else v4 since 2.3.99pre4 */
-	}
-}
-
-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;
-}
-
-static int daemonize(void)
-{
-	int fd;
-	int pid = fork();
-	if (pid < 0) /* error */
-		return -errno;
-	if (pid > 0) /* parent */
-		return 0;
-	/* child */
-	fd = xopen(bb_dev_null, O_RDWR);
-	dup2(fd, 0);
-	dup2(fd, 1);
-	dup2(fd, 2);
-	if (fd > 2) close(fd);
-	setsid();
-	openlog(bb_applet_name, LOG_PID, LOG_DAEMON);
-	logmode = LOGMODE_SYSLOG;
-	return 1;
-}
-
-// TODO
-static inline int we_saw_this_host_before(const char *hostname)
-{
-	return 0;
-}
-
-/* RPC strerror analogs are terminally idiotic:
- * *mandatory* prefix and \n at end.
- * This hopefully helps. Usage:
- * error_msg_rpc(clnt_*error*(" ")) */
-static void error_msg_rpc(const char *msg)
-{
-	size_t len;
-	while (msg[0] == ' ' || msg[0] == ':') msg++;
-	len = strlen(msg);
-	while (len && msg[len-1] == '\n') len--;
-	bb_error_msg("%.*s", len, msg);
-}
-
-int nfsmount(struct mntent *mp, int vfsflags, char *filteropts)
-{
-	CLIENT *mclient;
-	char *hostname;
-	char *pathname;
-	char *mounthost;
-	struct nfs_mount_data data;
-	char *opt;
-	struct hostent *hp;
-	struct sockaddr_in server_addr;
-	struct sockaddr_in mount_server_addr;
-	int msock, fsock;
-	union {
-		struct fhstatus nfsv2;
-		struct mountres3 nfsv3;
-	} status;
-	int daemonized;
-	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;
-
-	find_kernel_nfs_mount_version();
-
-	daemonized = 0;
-	mounthost = NULL;
-	retval = ETIMEDOUT;
-	msock = fsock = -1;
-	mclient = NULL;
-
-	/* NB: hostname, mounthost, filteropts must be free()d prior to return */
-
-	filteropts = xstrdup(filteropts); /* going to trash it later... */
-
-	hostname = xstrdup(mp->mnt_fsname);
-	/* mount_main() guarantees that ':' is there */
-	s = strchr(hostname, ':');
-	pathname = s + 1;
-	*s = '\0';
-	/* Ignore all but first hostname in replicated mounts
-	   until they can be fully supported. (mack@sgi.com) */
-	s = strchr(hostname, ',');
-	if (s) {
-		*s = '\0';
-		bb_error_msg("warning: multiple hostnames not supported");
-	}
-
-	server_addr.sin_family = AF_INET;
-#ifdef HAVE_inet_aton
-	if (!inet_aton(hostname, &server_addr.sin_addr))
-#endif
-	{
-		hp = gethostbyname(hostname);
-		if (hp == NULL) {
-			bb_herror_msg("%s", hostname);
-			goto fail;
-		}
-		if (hp->h_length > sizeof(struct in_addr)) {
-			bb_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 */
-
-	if (!mp->mnt_opts) { /* TODO: actually mp->mnt_opts is never NULL */
-		mp->mnt_opts = xasprintf("addr=%s", inet_ntoa(server_addr.sin_addr));
-	} else {
-		char *tmp = xasprintf("%s%saddr=%s", mp->mnt_opts,
-					mp->mnt_opts[0] ? "," : "",
-					inet_ntoa(server_addr.sin_addr));
-		free(mp->mnt_opts);
-		mp->mnt_opts = tmp;
-	}
-
-	/* 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;
-	data.namlen	= NAME_MAX;
-
-	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 = 100003;
-	nfsvers = 0;
-
-	/* parse options */
-
-	for (opt = strtok(filteropts, ","); opt; opt = strtok(NULL, ",")) {
-		char *opteq = strchr(opt, '=');
-		if (opteq) {
-			int 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
-					bb_error_msg("warning: unrecognized proto= option");
-			} else if (!strcmp(opt, "namlen")) {
-				if (nfs_mount_version >= 2)
-					data.namlen = val;
-				else
-					bb_error_msg("warning: option namlen is not supported\n");
-			} else if (!strcmp(opt, "addr"))
-				/* ignore */;
-			else {
-				bb_error_msg("unknown nfs mount parameter: %s=%d", opt, val);
-				goto fail;
-			}
-		}
-		else {
-			int 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
-					bb_error_msg("warning: option nolock is not supported");
-			} else {
-				bb_error_msg("unknown nfs mount option: %s%s", 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)
-		data.flags |= (tcp ? NFS_MOUNT_TCP : 0);
-	if (nfs_mount_version >= 3)
-		data.flags |= (nolock ? NFS_MOUNT_NONLM : 0);
-	if (nfsvers > MAX_NFSPROT || mountvers > MAX_NFSPROT) {
-		bb_error_msg("NFSv%d not supported", nfsvers);
-		goto fail;
-	}
-	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);
-	printf("tcp = %d\n",
-		(data.flags & NFS_MOUNT_TCP) != 0);
-#endif
-
-	data.version = nfs_mount_version;
-
-	if (vfsflags & MS_REMOUNT)
-		goto do_mount;
-
-	/*
-	 * 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 && we_saw_this_host_before(hostname)) {
-		daemonized = daemonize(); /* parent or error */
-		if (daemonized <= 0) { /* parent or error */
-			retval = -daemonized;
-			goto ret;
-		}
-	}
-
-	/* create mount daemon 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 {
-			hp = gethostbyname(mounthost);
-			if (hp == NULL) {
-				bb_herror_msg("%s", mounthost);
-				goto fail;
-			} else {
-				if (hp->h_length > sizeof(struct in_addr)) {
-					bb_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. When the mount
-	 * times out, and the "bg" option is set, we background ourself
-	 * and continue trying.
-	 *
-	 * 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.
-	 */
-	{
-		struct timeval total_timeout;
-		struct timeval retry_timeout;
-		struct pmap* pm_mnt;
-		time_t t;
-		time_t prevt;
-		time_t timeout;
-
-		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;
-retry:
-		/* 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);
-		nfsvers = (pm_mnt->pm_vers < 2) ? 2 : pm_mnt->pm_vers;
-
-		/* 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) {
-			if (!daemonized && prevt == 0)
-				error_msg_rpc(clnt_spcreateerror(" "));
-		} else {
-			enum clnt_stat clnt_stat;
-			/* 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)
-				goto prepare_kernel_data; /* we're done */
-			if (errno != ECONNREFUSED) {
-				error_msg_rpc(clnt_sperror(mclient, " "));
-				goto fail;	/* don't retry */
-			}
-			/* Connection refused */
-			if (!daemonized && prevt == 0) /* print just once */
-				error_msg_rpc(clnt_sperror(mclient, " "));
-			auth_destroy(mclient->cl_auth);
-			clnt_destroy(mclient);
-			mclient = 0;
-			close(msock);
-		}
-
-		/* Timeout. We are going to retry... maybe */
-
-		if (!bg)
-			goto fail;
-		if (!daemonized) {
-			daemonized = daemonize();
-			if (daemonized <= 0) { /* parent or error */
-				retval = -daemonized;
-				goto ret;
-			}
-		}
-		prevt = t;
-		t = time(NULL);
-		if (t >= timeout)
-			/* TODO error message */
-			goto fail;
-
-		goto retry;
-	}
-
-prepare_kernel_data:
-
-	if (nfsvers == 2) {
-		if (status.nfsv2.fhs_status != 0) {
-			bb_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);
-		data.root.size = NFS_FHSIZE;
-		memcpy(data.old_root.data,
-				(char *) status.nfsv2.fhstatus_u.fhs_fhandle,
-				NFS_FHSIZE);
-	} else {
-		fhandle3 *my_fhandle;
-		if (status.nfsv3.fhs_status != 0) {
-			bb_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;
-	}
-
-	/* create nfs socket for kernel */
-
-	if (tcp) {
-		if (nfs_mount_version < 3) {
-			bb_error_msg("NFS over TCP is not supported");
-			goto fail;
-		}
-		fsock = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
-	} else
-		fsock = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
-	if (fsock < 0) {
-		bb_perror_msg("nfs socket");
-		goto fail;
-	}
-	if (bindresvport(fsock, 0) < 0) {
-		bb_perror_msg("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 daemon\n", port);
-#endif
-	server_addr.sin_port = htons(port);
-
-	/* 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);
-
-	if (bg) {
-		/* We must wait until mount directory is available */
-		struct stat statbuf;
-		int delay = 1;
-		while (stat(mp->mnt_dir, &statbuf) == -1) {
-			if (!daemonized) {
-				daemonized = daemonize();
-				if (daemonized <= 0) { /* parent or error */
-					retval = -daemonized;
-					goto ret;
-				}
-			}
-			sleep(delay);	/* 1, 2, 4, 8, 16, 30, ... */
-			delay *= 2;
-			if (delay > 30)
-				delay = 30;
-		}
-	}
-
-do_mount: /* perform actual mount */
-
-	mp->mnt_type = "nfs";
-	retval = mount_it_now(mp, vfsflags, (char*)&data);
-	goto ret;
-
-fail:	/* abort */
-
-	if (msock != -1) {
-		if (mclient) {
-			auth_destroy(mclient->cl_auth);
-			clnt_destroy(mclient);
-		}
-		close(msock);
-	}
-	if (fsock != -1)
-		close(fsock);
-
-ret:
-	free(hostname);
-	free(mounthost);
-	free(filteropts);
-	return retval;
-}