nfsmount.c

/* 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
 * 
 */

/*
 * 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 <rpc/rpc.h>
#include <rpc/pmap_prot.h>
#include <rpc/pmap_clnt.h>
#include <sys/socket.h>
#include <sys/time.h>
#include <sys/utsname.h>
#include <sys/stat.h>
#include <netinet/in.h>
#include <arpa/inet.h>

#include "nfsmount.h"

#include <linux/nfs.h>
/* we suppose that libc-dev is providing NFSv3 headers (kernel >= 2.2) */
#include <linux/nfs_mount.h>

#define _
#define HAVE_inet_aton
#define MS_REMOUNT	32			/* Alter flags of a mounted FS */
#define sloppy 0
#define EX_FAIL 1
#define EX_BG 1
#define xstrdup strdup
#define xstrndup strndup


static char *nfs_strerror(int stat);

#define MAKE_VERSION(p,q,r)	(65536*(p) + 256*(q) + (r))

static int linux_version_code(void)
{
	struct utsname my_utsname;
	int p, q, r;

	if (uname(&my_utsname) == 0) {
		p = atoi(strtok(my_utsname.release, "."));
		q = atoi(strtok(NULL, "."));
		r = atoi(strtok(NULL, "."));
		return MAKE_VERSION(p, q, r);
	}
	return 0;
}

/*
 * nfs_mount_version according to the kernel sources seen at compile time.
 */
static int nfs_mount_version = 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)
{
	int kernel_version = linux_version_code();

	if (kernel_version) {
		if (kernel_version < MAKE_VERSION(2, 1, 32))
			nfs_mount_version = 1;
		else
			nfs_mount_version = 3;
	}
	if (nfs_mount_version > NFS_MOUNT_VERSION)
		nfs_mount_version = NFS_MOUNT_VERSION;
}

int nfsmount(const char *spec, const char *node, unsigned long *flags,
			 char **extra_opts, char **mount_opts, int running_bg)
{
	static char *prev_bg_host;
	char hostdir[1024];
	CLIENT *mclient;
	char *hostname;
	char *dirname;
	char *old_opts;
	char *mounthost = NULL;
	char new_opts[1024];
	fhandle root_fhandle;
	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;
	int msock, fsock;
	struct timeval retry_timeout;
	struct fhstatus status;
	struct stat statbuf;
	char *s;
	int port;
	int mountport;
	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)) {
		fprintf(stderr, _("mount: "
						  "excessively long host:dir argument\n"));
		goto fail;
	}
	strcpy(hostdir, spec);
	if ((s = strchr(hostdir, ':'))) {
		hostname = hostdir;
		dirname = 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';
			fprintf(stderr, _("mount: warning: "
							  "multiple hostnames not supported\n"));
		}
	} else {
		fprintf(stderr, _("mount: "
						  "directory to mount not in host:dir format\n"));
		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) {
			fprintf(stderr, _("mount: can't get address for %s\n"),
					hostname);
			goto fail;
		} else {
			if (hp->h_length > sizeof(struct in_addr)) {
				fprintf(stderr, _("mount: got bad hp->h_length\n"));
				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)) {
		fprintf(stderr, _("mount: " "excessively long option argument\n"));
		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 = MOUNTVERS;
	port = 0;
	mountport = 0;
	nfsprog = NFS_PROGRAM;
	nfsvers = NFS_VERSION;

	/* 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 {
				if (!sloppy) {
					printf(_("unknown nfs mount option: "
							 "%s%s\n"), val ? "" : "no", opt);
					goto fail;
				}
			}
		}
	}
	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

	/* 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) {
				fprintf(stderr, _("mount: can't get address for %s\n"),
						hostname);
				goto fail;
			} else {
				if (hp->h_length > sizeof(struct in_addr)) {
					fprintf(stderr, _("mount: got bad hp->h_length?\n"));
					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);

			/* contact the mount daemon via TCP */
			mount_server_addr.sin_port = htons(mountport);
			msock = RPC_ANYSOCK;
			mclient = clnttcp_create(&mount_server_addr,
									 mountprog, mountvers, &msock, 0, 0);

			/* if this fails, contact the mount daemon via UDP */
			if (!mclient) {
				mount_server_addr.sin_port = htons(mountport);
				msock = RPC_ANYSOCK;
				mclient = clntudp_create(&mount_server_addr,
										 mountprog, mountvers,
										 retry_timeout, &msock);
			}
			if (mclient) {
				/* try to mount hostname:dirname */
				mclient->cl_auth = authunix_create_default();
				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;
	}

	if (status.fhs_status != 0) {
		fprintf(stderr,
				_("mount: %s:%s failed, reason given by server: %s\n"),
				hostname, dirname, nfs_strerror(status.fhs_status));
		goto fail;
	}
	memcpy((char *) &root_fhandle, (char *) status.fhstatus_u.fhs_fhandle,
		   sizeof(root_fhandle));

	/* 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 (linux_version_code() <= 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.root, (char *) &root_fhandle,
		   sizeof(root_fhandle));
	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;
}

#if 0
int my_getport(struct in_addr server, struct timeval *timeo, ...)
{
	struct sockaddr_in sin;
	struct pmap pmap;
	CLIENT *clnt;
	int sock = RPC_ANYSOCK, port;

	pmap.pm_prog = prog;
	pmap.pm_vers = vers;
	pmap.pm_prot = prot;
	pmap.pm_port = 0;
	sin.sin_family = AF_INET;
	sin.sin_addr = server;
	sin.sin_port = htons(111);
	clnt = clntudp_create(&sin, 100000, 2, *timeo, &sock);
	status = clnt_call(clnt, PMAP_GETPORT,
					   &pmap, (xdrproc_t) xdr_pmap,
					   &port, (xdrproc_t) xdr_uint);
	if (status != SUCCESS) {
		/* natter */
		port = 0;
	}

	clnt_destroy(clnt);
	close(sock);
	return port;
}
#endif











/*
 * Please do not edit this file.
 * It was generated using rpcgen.
 */

#include <rpc/types.h>
#include <rpc/xdr.h>

/*
 * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
 * unrestricted use provided that this legend is included on all tape
 * media and as a part of the software program in whole or part.  Users
 * may copy or modify Sun RPC without charge, but are not authorized
 * to license or distribute it to anyone else except as part of a product or
 * program developed by the user or with the express written consent of
 * Sun Microsystems, Inc.
 *
 * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
 * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
 *
 * Sun RPC is provided with no support and without any obligation on the
 * part of Sun Microsystems, Inc. to assist in its use, correction,
 * modification or enhancement.
 *
 * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
 * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
 * OR ANY PART THEREOF.
 *
 * In no event will Sun Microsystems, Inc. be liable for any lost revenue
 * or profits or other special, indirect and consequential damages, even if
 * Sun has been advised of the possibility of such damages.
 *
 * Sun Microsystems, Inc.
 * 2550 Garcia Avenue
 * Mountain View, California  94043
 */
/*
 * Copyright (c) 1985, 1990 by Sun Microsystems, Inc.
 */

/* from @(#)mount.x	1.3 91/03/11 TIRPC 1.0 */

bool_t xdr_fhandle(XDR * xdrs, fhandle objp)
{

	if (!xdr_opaque(xdrs, objp, FHSIZE)) {
		return (FALSE);
	}
	return (TRUE);
}

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);
}

bool_t xdr_dirpath(XDR * xdrs, dirpath * objp)
{

	if (!xdr_string(xdrs, objp, MNTPATHLEN)) {
		return (FALSE);
	}
	return (TRUE);
}

bool_t xdr_name(XDR * xdrs, name * objp)
{

	if (!xdr_string(xdrs, objp, MNTNAMLEN)) {
		return (FALSE);
	}
	return (TRUE);
}

bool_t xdr_mountlist(XDR * xdrs, mountlist * objp)
{

	if (!xdr_pointer
		(xdrs, (char **) objp, sizeof(struct mountbody),
		 (xdrproc_t) xdr_mountbody)) {
		return (FALSE);
	}
	return (TRUE);
}

bool_t xdr_mountbody(XDR * xdrs, mountbody * objp)
{

	if (!xdr_name(xdrs, &objp->ml_hostname)) {
		return (FALSE);
	}
	if (!xdr_dirpath(xdrs, &objp->ml_directory)) {
		return (FALSE);
	}
	if (!xdr_mountlist(xdrs, &objp->ml_next)) {
		return (FALSE);
	}
	return (TRUE);
}

bool_t xdr_groups(XDR * xdrs, groups * objp)
{

	if (!xdr_pointer
		(xdrs, (char **) objp, sizeof(struct groupnode),
		 (xdrproc_t) xdr_groupnode)) {
		return (FALSE);
	}
	return (TRUE);
}

bool_t xdr_groupnode(XDR * xdrs, groupnode * objp)
{

	if (!xdr_name(xdrs, &objp->gr_name)) {
		return (FALSE);
	}
	if (!xdr_groups(xdrs, &objp->gr_next)) {
		return (FALSE);
	}
	return (TRUE);
}

bool_t xdr_exports(XDR * xdrs, exports * objp)
{

	if (!xdr_pointer
		(xdrs, (char **) objp, sizeof(struct exportnode),
		 (xdrproc_t) xdr_exportnode)) {
		return (FALSE);
	}
	return (TRUE);
}

bool_t xdr_exportnode(XDR * xdrs, exportnode * objp)
{

	if (!xdr_dirpath(xdrs, &objp->ex_dir)) {
		return (FALSE);
	}
	if (!xdr_groups(xdrs, &objp->ex_groups)) {
		return (FALSE);
	}
	if (!xdr_exports(xdrs, &objp->ex_next)) {
		return (FALSE);
	}
	return (TRUE);
}

bool_t xdr_ppathcnf(XDR * xdrs, ppathcnf * objp)
{

	register long *buf;

	int i;

	if (xdrs->x_op == XDR_ENCODE) {
		buf = (long *) XDR_INLINE(xdrs, 6 * BYTES_PER_XDR_UNIT);
		if (buf == NULL) {
			if (!xdr_int(xdrs, &objp->pc_link_max)) {
				return (FALSE);
			}
			if (!xdr_short(xdrs, &objp->pc_max_canon)) {
				return (FALSE);
			}
			if (!xdr_short(xdrs, &objp->pc_max_input)) {
				return (FALSE);
			}
			if (!xdr_short(xdrs, &objp->pc_name_max)) {
				return (FALSE);
			}
			if (!xdr_short(xdrs, &objp->pc_path_max)) {
				return (FALSE);
			}
			if (!xdr_short(xdrs, &objp->pc_pipe_buf)) {
				return (FALSE);
			}

		} else {
			IXDR_PUT_LONG(buf, objp->pc_link_max);
			IXDR_PUT_SHORT(buf, objp->pc_max_canon);
			IXDR_PUT_SHORT(buf, objp->pc_max_input);
			IXDR_PUT_SHORT(buf, objp->pc_name_max);
			IXDR_PUT_SHORT(buf, objp->pc_path_max);
			IXDR_PUT_SHORT(buf, objp->pc_pipe_buf);
		}
		if (!xdr_u_char(xdrs, &objp->pc_vdisable)) {
			return (FALSE);
		}
		if (!xdr_char(xdrs, &objp->pc_xxx)) {
			return (FALSE);
		}
		buf = (long *) XDR_INLINE(xdrs, 2 * BYTES_PER_XDR_UNIT);
		if (buf == NULL) {
			if (!xdr_vector
				(xdrs, (char *) objp->pc_mask, 2, sizeof(short),
				 (xdrproc_t) xdr_short)) {
				return (FALSE);
			}

		} else {
			{
				register short *genp;

				for (i = 0, genp = objp->pc_mask; i < 2; i++) {
					IXDR_PUT_SHORT(buf, *genp++);
				}
			};
		}

		return (TRUE);
	} else if (xdrs->x_op == XDR_DECODE) {
		buf = (long *) XDR_INLINE(xdrs, 6 * BYTES_PER_XDR_UNIT);
		if (buf == NULL) {
			if (!xdr_int(xdrs, &objp->pc_link_max)) {
				return (FALSE);
			}
			if (!xdr_short(xdrs, &objp->pc_max_canon)) {
				return (FALSE);
			}
			if (!xdr_short(xdrs, &objp->pc_max_input)) {
				return (FALSE);
			}
			if (!xdr_short(xdrs, &objp->pc_name_max)) {
				return (FALSE);
			}
			if (!xdr_short(xdrs, &objp->pc_path_max)) {
				return (FALSE);
			}
			if (!xdr_short(xdrs, &objp->pc_pipe_buf)) {
				return (FALSE);
			}

		} else {
			objp->pc_link_max = IXDR_GET_LONG(buf);
			objp->pc_max_canon = IXDR_GET_SHORT(buf);
			objp->pc_max_input = IXDR_GET_SHORT(buf);
			objp->pc_name_max = IXDR_GET_SHORT(buf);
			objp->pc_path_max = IXDR_GET_SHORT(buf);
			objp->pc_pipe_buf = IXDR_GET_SHORT(buf);
		}
		if (!xdr_u_char(xdrs, &objp->pc_vdisable)) {
			return (FALSE);
		}
		if (!xdr_char(xdrs, &objp->pc_xxx)) {
			return (FALSE);
		}
		buf = (long *) XDR_INLINE(xdrs, 2 * BYTES_PER_XDR_UNIT);
		if (buf == NULL) {
			if (!xdr_vector
				(xdrs, (char *) objp->pc_mask, 2, sizeof(short),
				 (xdrproc_t) xdr_short)) {
				return (FALSE);
			}

		} else {
			{
				register short *genp;

				for (i = 0, genp = objp->pc_mask; i < 2; i++) {
					*genp++ = IXDR_GET_SHORT(buf);
				}
			};
		}
		return (TRUE);
	}

	if (!xdr_int(xdrs, &objp->pc_link_max)) {
		return (FALSE);
	}
	if (!xdr_short(xdrs, &objp->pc_max_canon)) {
		return (FALSE);
	}
	if (!xdr_short(xdrs, &objp->pc_max_input)) {
		return (FALSE);
	}
	if (!xdr_short(xdrs, &objp->pc_name_max)) {
		return (FALSE);
	}
	if (!xdr_short(xdrs, &objp->pc_path_max)) {
		return (FALSE);
	}
	if (!xdr_short(xdrs, &objp->pc_pipe_buf)) {
		return (FALSE);
	}
	if (!xdr_u_char(xdrs, &objp->pc_vdisable)) {
		return (FALSE);
	}
	if (!xdr_char(xdrs, &objp->pc_xxx)) {
		return (FALSE);
	}
	if (!xdr_vector
		(xdrs, (char *) objp->pc_mask, 2, sizeof(short),
		 (xdrproc_t) xdr_short)) {
		return (FALSE);
	}
	return (TRUE);
}


/*
 * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
 * unrestricted use provided that this legend is included on all tape
 * media and as a part of the software program in whole or part.  Users
 * may copy or modify Sun RPC without charge, but are not authorized
 * to license or distribute it to anyone else except as part of a product or
 * program developed by the user or with the express written consent of
 * Sun Microsystems, Inc.
 *
 * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
 * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
 *
 * Sun RPC is provided with no support and without any obligation on the
 * part of Sun Microsystems, Inc. to assist in its use, correction,
 * modification or enhancement.
 *
 * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
 * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
 * OR ANY PART THEREOF.
 *
 * In no event will Sun Microsystems, Inc. be liable for any lost revenue
 * or profits or other special, indirect and consequential damages, even if
 * Sun has been advised of the possibility of such damages.
 *
 * Sun Microsystems, Inc.
 * 2550 Garcia Avenue
 * Mountain View, California  94043
 */
/*
 * Copyright (c) 1985, 1990 by Sun Microsystems, Inc.
 */

/* from @(#)mount.x	1.3 91/03/11 TIRPC 1.0 */

#include <string.h>				/* for memset() */

/* Default timeout can be changed using clnt_control() */
static struct timeval TIMEOUT = { 25, 0 };

void *mountproc_null_1(argp, clnt)
void *argp;
CLIENT *clnt;
{
	static char clnt_res;

	memset((char *) &clnt_res, 0, sizeof(clnt_res));
	if (clnt_call
		(clnt, MOUNTPROC_NULL, (xdrproc_t) xdr_void, argp,
		 (xdrproc_t) xdr_void, &clnt_res, TIMEOUT) != RPC_SUCCESS) {
		return (NULL);
	}
	return ((void *) &clnt_res);
}

fhstatus *mountproc_mnt_1(argp, clnt)
dirpath *argp;
CLIENT *clnt;
{
	static fhstatus clnt_res;

	memset((char *) &clnt_res, 0, sizeof(clnt_res));
	if (clnt_call(clnt, MOUNTPROC_MNT, (xdrproc_t) xdr_dirpath,
				  (caddr_t) argp, (xdrproc_t) xdr_fhstatus,
				  (caddr_t) & clnt_res, TIMEOUT) != RPC_SUCCESS) {
		return (NULL);
	}
	return (&clnt_res);
}

mountlist *mountproc_dump_1(argp, clnt)
void *argp;
CLIENT *clnt;
{
	static mountlist clnt_res;

	memset((char *) &clnt_res, 0, sizeof(clnt_res));
	if (clnt_call(clnt, MOUNTPROC_DUMP, (xdrproc_t) xdr_void,
				  (caddr_t) argp, (xdrproc_t) xdr_mountlist,
				  (caddr_t) & clnt_res, TIMEOUT) != RPC_SUCCESS) {
		return (NULL);
	}
	return (&clnt_res);
}

void *mountproc_umnt_1(argp, clnt)
dirpath *argp;
CLIENT *clnt;
{
	static char clnt_res;

	memset((char *) &clnt_res, 0, sizeof(clnt_res));
	if (clnt_call(clnt, MOUNTPROC_UMNT, (xdrproc_t) xdr_dirpath,
				  (caddr_t) argp, (xdrproc_t) xdr_void,
				  (caddr_t) & clnt_res, TIMEOUT) != RPC_SUCCESS) {
		return (NULL);
	}
	return ((void *) &clnt_res);
}

void *mountproc_umntall_1(argp, clnt)
void *argp;
CLIENT *clnt;
{
	static char clnt_res;

	memset((char *) &clnt_res, 0, sizeof(clnt_res));
	if (clnt_call(clnt, MOUNTPROC_UMNTALL, (xdrproc_t) xdr_void,
				  (caddr_t) argp, (xdrproc_t) xdr_void,
				  (caddr_t) & clnt_res, TIMEOUT) != RPC_SUCCESS) {
		return (NULL);
	}
	return ((void *) &clnt_res);
}

exports *mountproc_export_1(argp, clnt)
void *argp;
CLIENT *clnt;
{
	static exports clnt_res;

	memset((char *) &clnt_res, 0, sizeof(clnt_res));
	if (clnt_call(clnt, MOUNTPROC_EXPORT, (xdrproc_t) xdr_void,
				  (caddr_t) argp, (xdrproc_t) xdr_exports,
				  (caddr_t) & clnt_res, TIMEOUT) != RPC_SUCCESS) {
		return (NULL);
	}
	return (&clnt_res);
}

exports *mountproc_exportall_1(argp, clnt)
void *argp;
CLIENT *clnt;
{
	static exports clnt_res;

	memset((char *) &clnt_res, 0, sizeof(clnt_res));
	if (clnt_call(clnt, MOUNTPROC_EXPORTALL, (xdrproc_t) xdr_void,
				  (caddr_t) argp, (xdrproc_t) xdr_exports,
				  (caddr_t) & clnt_res, TIMEOUT) != RPC_SUCCESS) {
		return (NULL);
	}
	return (&clnt_res);
}

void *mountproc_null_2(argp, clnt)
void *argp;
CLIENT *clnt;
{
	static char clnt_res;

	memset((char *) &clnt_res, 0, sizeof(clnt_res));
	if (clnt_call
		(clnt, MOUNTPROC_NULL, (xdrproc_t) xdr_void, argp,
		 (xdrproc_t) xdr_void, &clnt_res, TIMEOUT) != RPC_SUCCESS) {
		return (NULL);
	}
	return ((void *) &clnt_res);
}

fhstatus *mountproc_mnt_2(argp, clnt)
dirpath *argp;
CLIENT *clnt;
{
	static fhstatus clnt_res;

	memset((char *) &clnt_res, 0, sizeof(clnt_res));
	if (clnt_call(clnt, MOUNTPROC_MNT, (xdrproc_t) xdr_dirpath,
				  (caddr_t) argp, (xdrproc_t) xdr_fhstatus,
				  (caddr_t) & clnt_res, TIMEOUT) != RPC_SUCCESS) {
		return (NULL);
	}
	return (&clnt_res);
}

mountlist *mountproc_dump_2(argp, clnt)
void *argp;
CLIENT *clnt;
{
	static mountlist clnt_res;

	memset((char *) &clnt_res, 0, sizeof(clnt_res));
	if (clnt_call(clnt, MOUNTPROC_DUMP, (xdrproc_t) xdr_void, argp,
				  (xdrproc_t) xdr_mountlist, (caddr_t) & clnt_res,
				  TIMEOUT) != RPC_SUCCESS) {
		return (NULL);
	}
	return (&clnt_res);
}

void *mountproc_umnt_2(argp, clnt)
dirpath *argp;
CLIENT *clnt;
{
	static char clnt_res;

	memset((char *) &clnt_res, 0, sizeof(clnt_res));
	if (clnt_call(clnt, MOUNTPROC_UMNT, (xdrproc_t) xdr_dirpath,
				  (caddr_t) argp, (xdrproc_t) xdr_void,
				  (caddr_t) & clnt_res, TIMEOUT) != RPC_SUCCESS) {
		return (NULL);
	}
	return ((void *) &clnt_res);
}

void *mountproc_umntall_2(argp, clnt)
void *argp;
CLIENT *clnt;
{
	static char clnt_res;

	memset((char *) &clnt_res, 0, sizeof(clnt_res));
	if (clnt_call(clnt, MOUNTPROC_UMNTALL, (xdrproc_t) xdr_void,
				  (caddr_t) argp, (xdrproc_t) xdr_void,
				  (caddr_t) & clnt_res, TIMEOUT) != RPC_SUCCESS) {
		return (NULL);
	}
	return ((void *) &clnt_res);
}

exports *mountproc_export_2(argp, clnt)
void *argp;
CLIENT *clnt;
{
	static exports clnt_res;

	memset((char *) &clnt_res, 0, sizeof(clnt_res));
	if (clnt_call(clnt, MOUNTPROC_EXPORT, (xdrproc_t) xdr_void,
				  argp, (xdrproc_t) xdr_exports, (caddr_t) & clnt_res,
				  TIMEOUT) != RPC_SUCCESS) {
		return (NULL);
	}
	return (&clnt_res);
}

exports *mountproc_exportall_2(argp, clnt)
void *argp;
CLIENT *clnt;
{
	static exports clnt_res;

	memset((char *) &clnt_res, 0, sizeof(clnt_res));
	if (clnt_call(clnt, MOUNTPROC_EXPORTALL, (xdrproc_t) xdr_void, argp,
				  (xdrproc_t) xdr_exports, (caddr_t) & clnt_res,
				  TIMEOUT) != RPC_SUCCESS) {
		return (NULL);
	}
	return (&clnt_res);
}

ppathcnf *mountproc_pathconf_2(argp, clnt)
dirpath *argp;
CLIENT *clnt;
{
	static ppathcnf clnt_res;

	memset((char *) &clnt_res, 0, sizeof(clnt_res));
	if (clnt_call(clnt, MOUNTPROC_PATHCONF, (xdrproc_t) xdr_dirpath,
				  (caddr_t) argp, (xdrproc_t) xdr_ppathcnf,
				  (caddr_t) & clnt_res, TIMEOUT) != RPC_SUCCESS) {
		return (NULL);
	}
	return (&clnt_res);
}