+/*
+ * Copyright (c) 1989 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Rick Macklem at The University of Guelph.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef lint
+char copyright[] =
+"@(#) Copyright (c) 1989 Regents of the University of California.\n\
+ All rights reserved.\n";
+#endif not lint
+
+#ifndef lint
+static char sccsid[] = "@(#)showmount.c 6.5 (Berkeley) 3/1/91";
+#endif not lint
+
+#include <sys/types.h>
+#include <sys/file.h>
+#include <sys/socket.h>
+#include <sys/socketvar.h>
+#include <netdb.h>
+#include <rpc/rpc.h>
+#include <rpc/pmap_clnt.h>
+#include <rpc/pmap_prot.h>
+#include <nfs/rpcv2.h>
+#include <stdio.h>
+#include <string.h>
+
+/* Constant defs */
+#define ALL 1
+#define DIRS 2
+
+#define DODUMP 0x1
+#define DOEXPORTS 0x2
+
+struct mountlist {
+ struct mountlist *ml_left;
+ struct mountlist *ml_right;
+ char ml_host[RPCMNT_NAMELEN+1];
+ char ml_dirp[RPCMNT_PATHLEN+1];
+};
+
+struct grouplist {
+ struct grouplist *gr_next;
+ char gr_name[RPCMNT_NAMELEN+1];
+};
+
+struct exportslist {
+ struct exportslist *ex_next;
+ struct grouplist *ex_groups;
+ char ex_dirp[RPCMNT_PATHLEN+1];
+};
+
+static struct mountlist *mntdump;
+static struct exportslist *exports;
+static int type = 0;
+int xdr_mntdump(), xdr_exports();
+
+/*
+ * This command queries the NFS mount daemon for it's mount list and/or
+ * it's exports list and prints them out.
+ * See "NFS: Network File System Protocol Specification, RFC1094, Appendix A"
+ * for detailed information on the protocol.
+ */
+main(argc, argv)
+ int argc;
+ char **argv;
+{
+ register struct mountlist *mntp;
+ register struct exportslist *exp;
+ register struct grouplist *grp;
+ extern char *optarg;
+ extern int optind;
+ register int rpcs = 0;
+ char ch;
+ char *host;
+ int estat;
+
+ while ((ch = getopt(argc, argv, "ade")) != EOF)
+ switch((char)ch) {
+ case 'a':
+ if (type == 0) {
+ type = ALL;
+ rpcs |= DODUMP;
+ } else
+ usage();
+ break;
+ case 'd':
+ if (type == 0) {
+ type = DIRS;
+ rpcs |= DODUMP;
+ } else
+ usage();
+ break;
+ case 'e':
+ rpcs |= DOEXPORTS;
+ break;
+ case '?':
+ default:
+ usage();
+ }
+ argc -= optind;
+ argv += optind;
+
+ if (argc > 0)
+ host = *argv;
+ else
+ host = "localhost";
+
+ if (rpcs == 0)
+ rpcs = DODUMP;
+
+ if (rpcs & DODUMP)
+ if ((estat = callrpc(host, RPCPROG_MNT, RPCMNT_VER1,
+ RPCMNT_DUMP, xdr_void, (char *)0,
+ xdr_mntdump, (char *)&mntdump)) != 0) {
+ clnt_perrno(estat);
+ fprintf(stderr, "Can't do Mountdump rpc\n");
+ exit(1);
+ }
+ if (rpcs & DOEXPORTS)
+ if ((estat = callrpc(host, RPCPROG_MNT, RPCMNT_VER1,
+ RPCMNT_EXPORT, xdr_void, (char *)0,
+ xdr_exports, (char *)&exports)) != 0) {
+ clnt_perrno(estat);
+ fprintf(stderr, "Can't do Exports rpc\n");
+ exit(1);
+ }
+
+ /* Now just print out the results */
+ if (rpcs & DODUMP) {
+ switch (type) {
+ case ALL:
+ printf("All mount points on %s:\n", host);
+ break;
+ case DIRS:
+ printf("Directories on %s:\n", host);
+ break;
+ default:
+ printf("Hosts on %s:\n", host);
+ break;
+ };
+ print_dump(mntdump);
+ }
+ if (rpcs & DOEXPORTS) {
+ printf("Exports list on %s:\n", host);
+ exp = exports;
+ while (exp) {
+ printf("%-35s", exp->ex_dirp);
+ grp = exp->ex_groups;
+ if (grp == NULL) {
+ printf("Everyone\n");
+ } else {
+ while (grp) {
+ printf("%s ", grp->gr_name);
+ grp = grp->gr_next;
+ }
+ printf("\n");
+ }
+ exp = exp->ex_next;
+ }
+ }
+}
+
+/*
+ * Xdr routine for retrieving the mount dump list
+ */
+xdr_mntdump(xdrsp, mlp)
+ XDR *xdrsp;
+ struct mountlist **mlp;
+{
+ register struct mountlist *mp;
+ register struct mountlist *tp;
+ register struct mountlist **otp;
+ int val, val2;
+ int bool;
+ char *strp;
+
+ *mlp = (struct mountlist *)0;
+ if (!xdr_bool(xdrsp, &bool))
+ return (0);
+ while (bool) {
+ mp = (struct mountlist *)malloc(sizeof(struct mountlist));
+ if (mp == NULL)
+ return (0);
+ mp->ml_left = mp->ml_right = (struct mountlist *)0;
+ strp = mp->ml_host;
+ if (!xdr_string(xdrsp, &strp, RPCMNT_NAMELEN))
+ return (0);
+ strp = mp->ml_dirp;
+ if (!xdr_string(xdrsp, &strp, RPCMNT_PATHLEN))
+ return (0);
+
+ /*
+ * Build a binary tree on sorted order of either host or dirp.
+ * Drop any duplications.
+ */
+ if (*mlp == NULL) {
+ *mlp = mp;
+ } else {
+ tp = *mlp;
+ while (tp) {
+ val = strcmp(mp->ml_host, tp->ml_host);
+ val2 = strcmp(mp->ml_dirp, tp->ml_dirp);
+ switch (type) {
+ case ALL:
+ if (val == 0) {
+ if (val2 == 0) {
+ free((caddr_t)mp);
+ goto next;
+ }
+ val = val2;
+ }
+ break;
+ case DIRS:
+ if (val2 == 0) {
+ free((caddr_t)mp);
+ goto next;
+ }
+ val = val2;
+ break;
+ default:
+ if (val == 0) {
+ free((caddr_t)mp);
+ goto next;
+ }
+ break;
+ };
+ if (val < 0) {
+ otp = &tp->ml_left;
+ tp = tp->ml_left;
+ } else {
+ otp = &tp->ml_right;
+ tp = tp->ml_right;
+ }
+ }
+ *otp = mp;
+ }
+next:
+ if (!xdr_bool(xdrsp, &bool))
+ return (0);
+ }
+ return (1);
+}
+
+/*
+ * Xdr routine to retrieve exports list
+ */
+xdr_exports(xdrsp, exp)
+ XDR *xdrsp;
+ struct exportslist **exp;
+{
+ register struct exportslist *ep;
+ register struct grouplist *gp;
+ int bool, grpbool;
+ char *strp;
+
+ *exp = (struct exportslist *)0;
+ if (!xdr_bool(xdrsp, &bool))
+ return (0);
+ while (bool) {
+ ep = (struct exportslist *)malloc(sizeof(struct exportslist));
+ if (ep == NULL)
+ return (0);
+ ep->ex_groups = (struct grouplist *)0;
+ strp = ep->ex_dirp;
+ if (!xdr_string(xdrsp, &strp, RPCMNT_PATHLEN))
+ return (0);
+ if (!xdr_bool(xdrsp, &grpbool))
+ return (0);
+ while (grpbool) {
+ gp = (struct grouplist *)malloc(sizeof(struct grouplist));
+ if (gp == NULL)
+ return (0);
+ strp = gp->gr_name;
+ if (!xdr_string(xdrsp, &strp, RPCMNT_NAMELEN))
+ return (0);
+ gp->gr_next = ep->ex_groups;
+ ep->ex_groups = gp;
+ if (!xdr_bool(xdrsp, &grpbool))
+ return (0);
+ }
+ ep->ex_next = *exp;
+ *exp = ep;
+ if (!xdr_bool(xdrsp, &bool))
+ return (0);
+ }
+ return (1);
+}
+
+usage()
+{
+ fprintf(stderr, "usage: showmount [-ade] host\n");
+ exit(1);
+}
+
+/*
+ * Print the binary tree in inorder so that output is sorted.
+ */
+print_dump(mp)
+ struct mountlist *mp;
+{
+
+ if (mp == NULL)
+ return;
+ if (mp->ml_left)
+ print_dump(mp->ml_left);
+ switch (type) {
+ case ALL:
+ printf("%s:%s\n", mp->ml_host, mp->ml_dirp);
+ break;
+ case DIRS:
+ printf("%s\n", mp->ml_dirp);
+ break;
+ default:
+ printf("%s\n", mp->ml_host);
+ break;
+ };
+ if (mp->ml_right)
+ print_dump(mp->ml_right);
+}
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