Initial revision

3 files changed, 356 insertions, 0 deletions

diff --git a/utils/showmount/Makefile b/utils/showmount/Makefile
new file mode 100644
index 0000000..c8aa34d
--- /dev/null
+++ b/utils/showmount/Makefile
@@ -0,0 +1,11 @@
+#
+# dummy Makefile
+#
+
+PROGRAM	= showmount
+OBJS	= showmount.o
+LIBDEPS	= $(TOP)support/lib/libexport.a
+LIBS	= -lexport
+MAN8	= showmount
+
+include $(TOP)rules.mk
diff --git a/utils/showmount/showmount.c b/utils/showmount/showmount.c
new file mode 100644
index 0000000..47b5825
--- /dev/null
+++ b/utils/showmount/showmount.c
@@ -0,0 +1,287 @@
+/*
+ * showmount.c -- show mount information for an NFS server
+ * 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.
+ */
+
+#include "config.h"
+
+#include <stdio.h>
+#include <rpc/rpc.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <sys/time.h>
+#include <string.h>
+#include <sys/types.h>
+#include <unistd.h>
+#include <memory.h>
+#include <stdlib.h>
+
+#include <netdb.h>
+#include <arpa/inet.h>
+#include <errno.h>
+#include <getopt.h>
+#include <mount.h>
+#include <unistd.h>
+
+static char *	version = "showmount for " VERSION;
+static char *	program_name;
+static int	headers = 1;
+static int	hflag = 0;
+static int	aflag = 0;
+static int	dflag = 0;
+static int	eflag = 0;
+
+static struct option longopts[] =
+{
+	{ "all", 0, 0, 'a' },
+	{ "directories", 0, 0, 'd' },
+	{ "exports", 0, 0, 'e' },
+	{ "no-headers", 0, &headers, 0 },
+	{ "version", 0, 0, 'v' },
+	{ "help", 0, 0, 'h' },
+	{ NULL, 0, 0, 0 }
+};
+
+#define MAXHOSTLEN 256
+
+int dump_cmp(p, q)
+char **p;
+char **q;
+{
+	return strcmp(*p, *q);
+}
+
+static void usage(fp, n)
+FILE *fp;
+int n;
+{
+	fprintf(fp, "Usage: %s [-adehv]\n", program_name);
+	fprintf(fp, "       [--all] [--directories] [--exports]\n");
+	fprintf(fp, "       [--no-headers] [--help] [--version] [host]\n");
+	exit(n);
+}
+
+int main(argc, argv)
+int argc;
+char **argv;
+{
+	char hostname_buf[MAXHOSTLEN];
+	char *hostname;
+	enum clnt_stat clnt_stat;
+	struct hostent *hp;
+	struct sockaddr_in server_addr;
+	int msock;
+	struct timeval total_timeout;
+	struct timeval pertry_timeout;
+	int c;
+	CLIENT *mclient;
+	groups grouplist;
+	exports exportlist, exl;
+	mountlist dumplist;
+	mountlist list;
+	int i;
+	int n;
+	int maxlen;
+	char **dumpv;
+
+	program_name = argv[0];
+	while ((c = getopt_long(argc, argv, "adehv", longopts, NULL)) != EOF) {
+		switch (c) {
+		case 'a':
+			aflag = 1;
+			break;
+		case 'd':
+			dflag = 1;
+			break;
+		case 'e':
+			eflag = 1;
+			break;
+		case 'h':
+			usage(stdout, 0);
+			break;
+		case 'v':
+			printf("%s\n", version);
+			exit(0);
+		case 0:
+			break;
+		case '?':
+		default:
+			usage(stderr, 1);
+			break;
+		}
+	}
+	argc -= optind;
+	argv += optind;
+
+	switch (aflag + dflag + eflag) {
+	case 0:
+		hflag = 1;
+		break;
+	case 1:
+		break;
+	default:
+		fprintf(stderr, "%s: only one of -a, -d or -e is allowed\n",
+			program_name);
+		exit(1);
+		break;
+	}
+
+	switch (argc) {
+	case 0:
+		if (gethostname(hostname_buf, MAXHOSTLEN) < 0) {
+			perror("getting hostname");
+			exit(1);
+		}
+		hostname = hostname_buf;
+		break;
+	case 1:
+		hostname = argv[0];
+		break;
+	default:
+		fprintf(stderr, "%s: only one hostname is allowed\n",
+			program_name);
+		exit(1);
+		break;
+	}
+
+	if (hostname[0] >= '0' && hostname[0] <= '9') {
+		server_addr.sin_family = AF_INET;
+		server_addr.sin_addr.s_addr = inet_addr(hostname);
+	}
+	else {
+		if ((hp = gethostbyname(hostname)) == NULL) {
+			fprintf(stderr, "%s: can't get address for %s\n",
+				program_name, hostname);
+			exit(1);
+		}
+		server_addr.sin_family = AF_INET;
+		memcpy(&server_addr.sin_addr, hp->h_addr, hp->h_length);
+	}
+
+	/* create mount deamon client */
+
+	server_addr.sin_port = 0;
+	msock = RPC_ANYSOCK;
+	if ((mclient = clnttcp_create(&server_addr,
+	    MOUNTPROG, MOUNTVERS, &msock, 0, 0)) == NULL) {
+		server_addr.sin_port = 0;
+		msock = RPC_ANYSOCK;
+		pertry_timeout.tv_sec = 3;
+		pertry_timeout.tv_usec = 0;
+		if ((mclient = clntudp_create(&server_addr,
+		    MOUNTPROG, MOUNTVERS, pertry_timeout, &msock)) == NULL) {
+			clnt_pcreateerror("mount clntudp_create");
+			exit(1);
+		}
+	}
+	mclient->cl_auth = authunix_create_default();
+	total_timeout.tv_sec = 20;
+	total_timeout.tv_usec = 0;
+
+	if (eflag) {
+		memset(&exportlist, '\0', sizeof(exportlist));
+		clnt_stat = clnt_call(mclient, MOUNTPROC_EXPORT,
+			(xdrproc_t) xdr_void, NULL,
+			(xdrproc_t) xdr_exports, (caddr_t) &exportlist,
+			total_timeout);
+		if (clnt_stat != RPC_SUCCESS) {
+			clnt_perror(mclient, "rpc mount export");
+			exit(1);
+		}
+		if (headers)
+			printf("Export list for %s:\n", hostname);
+		maxlen = 0;
+		for (exl = exportlist; exl; exl = exl->ex_next) {
+			if ((n = strlen(exl->ex_dir)) > maxlen)
+				maxlen = n;
+		}
+		while (exportlist) {
+			printf("%-*s ", maxlen, exportlist->ex_dir);
+			grouplist = exportlist->ex_groups;
+			if (grouplist)
+				while (grouplist) {
+					printf("%s%s", grouplist->gr_name,
+						grouplist->gr_next ? "," : "");
+					grouplist = grouplist->gr_next;
+				}
+			else
+				printf("(everyone)");
+			printf("\n");
+			exportlist = exportlist->ex_next;
+		}
+		exit(0);
+	}
+
+	memset(&dumplist, '\0', sizeof(dumplist));
+	clnt_stat = clnt_call(mclient, MOUNTPROC_DUMP,
+		(xdrproc_t) xdr_void, NULL,
+		(xdrproc_t) xdr_mountlist, (caddr_t) &dumplist,
+		total_timeout);
+	if (clnt_stat != RPC_SUCCESS) {
+		clnt_perror(mclient, "rpc mount dump");
+		exit(1);
+	}
+
+	n = 0;
+	for (list = dumplist; list; list = list->ml_next)
+		n++;
+	dumpv = (char **) calloc(n, sizeof (char *));
+	if (n && !dumpv) {
+		fprintf(stderr, "%s: out of memory\n", program_name);
+		exit(1);
+	}
+	i = 0;
+
+	if (hflag) {
+		if (headers)
+			printf("Hosts on %s:\n", hostname);
+		while (dumplist) {
+			dumpv[i++] = dumplist->ml_hostname;
+			dumplist = dumplist->ml_next;
+		}
+	}
+	else if (aflag) {
+		if (headers)
+			printf("All mount points on %s:\n", hostname);
+		while (dumplist) {
+			char *t;
+
+			t=malloc(strlen(dumplist->ml_hostname)+strlen(dumplist->ml_directory)+2);
+			if (!t)
+			{
+				fprintf(stderr, "%s: out of memory\n", program_name);
+				exit(1);
+			}
+			sprintf(t, "%s:%s", dumplist->ml_hostname, dumplist->ml_directory);
+			dumpv[i++] = t;
+			dumplist = dumplist->ml_next;
+		}
+	}
+	else if (dflag) {
+		if (headers)
+			printf("Directories on %s:\n", hostname);
+		while (dumplist) {
+			dumpv[i++] = dumplist->ml_directory;
+			dumplist = dumplist->ml_next;
+		}
+	}
+
+	qsort(dumpv, n, sizeof (char *), dump_cmp);
+	
+	for (i = 0; i < n; i++) {
+		if (i == 0 || strcmp(dumpv[i], dumpv[i - 1]) != 0)
+			printf("%s\n", dumpv[i]);
+	}
+	exit(0);
+}
+
diff --git a/utils/showmount/showmount.man b/utils/showmount/showmount.man
new file mode 100644
index 0000000..63342c7
--- /dev/null
+++ b/utils/showmount/showmount.man
@@ -0,0 +1,58 @@
+.\" Copyright 1993 Rick Sladkey <jrs@world.std.com>
+.\" May be distributed under the GNU General Public License
+.TH SHOWMOUNT 8 "6 October 1993"
+.SH NAME
+showmount \- show mount information for an NFS server
+.SH SYNOPSIS
+.B /usr/sbin/showmount
+.B "[\ \-adehv\ ]"
+.B "[\ \-\-all\ ]"
+.B "[\ \-\-directories\ ]"
+.B "[\ \-\-exports\ ]"
+.B "[\ \-\-help\ ]"
+.B "[\ \-\-version\ ]"
+.B "[\ host\ ]"
+.SH DESCRIPTION
+.B showmount
+queries the mount daemon on a remote host for information about
+the state of the NFS server on that machine.  With no options
+.B showmount
+lists the set of clients who are mounting from that host.
+The output from
+.B showmount
+is designed to
+appear as though it were processesed through ``sort -u''.
+.SH OPTIONS
+.TP
+.BR \-a " or " \-\-all
+List both the client hostname and mounted directory in
+host:dir format.
+.TP
+.BR \-d " or " \-\-directories
+List only the directories mounted by some client.
+.TP
+.BR \-e " or " \-\-exports
+Show the NFS server's export list.
+.TP
+.BR \-h " or " \-\-help
+Provide a short help summary.
+.TP
+.BR \-v " or " \-\-version
+Report the current version number of the program.
+.TP
+.B \-\-no\-headers
+Suppress the descriptive headings from the output.
+.SH "SEE ALSO"
+.BR rpc.mountd (8),
+.BR rpc.nfsd (8)
+.SH BUGS
+The completeness and accurary of the information that
+.B showmount
+displays varies according to the NFS server's implementation.
+.P
+Because
+.B showmount
+sorts and uniqs the output, it is impossible to determine from
+the output whether a client is mounting the same directory more than once.
+.SH AUTHOR
+Rick Sladkey <jrs@world.std.com>