[unix-history] / usr / src / usr.bin / showmount / showmount.c

/*
 * 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.
 *
 * %sccs.include.redist.c%
 */

#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) %G%";
#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);
}
Commit	Line	Data
7918c07a KM	1	/*
	2	* Copyright (c) 1989 The Regents of the University of California.
	3	* All rights reserved.
	4	*
	5	* This code is derived from software contributed to Berkeley by
	6	* Rick Macklem at The University of Guelph.
	7	*
cb956e54	8	* %sccs.include.redist.c%
7918c07a KM	9	*/
	10
	11	#ifndef lint
	12	char copyright[] =
	13	"@(#) Copyright (c) 1989 Regents of the University of California.\n\
	14	All rights reserved.\n";
	15	#endif not lint
	16
	17	#ifndef lint
4c529d71	18	static char sccsid[] = "@(#)showmount.c 6.5 (Berkeley) %G%";
7918c07a KM	19	#endif not lint
7918c07a KM	20
7918c07a KM	21	#include <sys/types.h>
	22	#include <sys/file.h>
	23	#include <sys/socket.h>
	24	#include <sys/socketvar.h>
	25	#include <netdb.h>
	26	#include <rpc/rpc.h>
	27	#include <rpc/pmap_clnt.h>
	28	#include <rpc/pmap_prot.h>
	29	#include <nfs/rpcv2.h>
38dde0cd KB	30	#include <stdio.h>
38dde0cd KB	31	#include <string.h>
7918c07a KM	32
	33	/* Constant defs */
	34	#define ALL 1
	35	#define DIRS 2
	36
	37	#define DODUMP 0x1
	38	#define DOEXPORTS 0x2
	39
	40	struct mountlist {
	41	struct mountlist *ml_left;
	42	struct mountlist *ml_right;
	43	char ml_host[RPCMNT_NAMELEN+1];
	44	char ml_dirp[RPCMNT_PATHLEN+1];
	45	};
	46
	47	struct grouplist {
	48	struct grouplist *gr_next;
	49	char gr_name[RPCMNT_NAMELEN+1];
	50	};
	51
	52	struct exportslist {
	53	struct exportslist *ex_next;
	54	struct grouplist *ex_groups;
	55	char ex_dirp[RPCMNT_PATHLEN+1];
	56	};
	57
	58	static struct mountlist *mntdump;
	59	static struct exportslist *exports;
	60	static int type = 0;
	61	int xdr_mntdump(), xdr_exports();
	62
	63	/*
	64	* This command queries the NFS mount daemon for it's mount list and/or
	65	* it's exports list and prints them out.
	66	* See "NFS: Network File System Protocol Specification, RFC1094, Appendix A"
	67	* for detailed information on the protocol.
	68	*/
	69	main(argc, argv)
	70	int argc;
	71	char **argv;
	72	{
	73	register struct mountlist *mntp;
	74	register struct exportslist *exp;
	75	register struct grouplist *grp;
	76	extern char *optarg;
	77	extern int optind;
	78	register int rpcs = 0;
	79	char ch;
	80	char *host;
	81	int estat;
	82
	83	while ((ch = getopt(argc, argv, "ade")) != EOF)
	84	switch((char)ch) {
	85	case 'a':
	86	if (type == 0) {
	87	type = ALL;
	88	rpcs \|= DODUMP;
	89	} else
	90	usage();
	91	break;
	92	case 'd':
	93	if (type == 0) {
	94	type = DIRS;
	95	rpcs \|= DODUMP;
96	} else
97	usage();
98	break;
99	case 'e':
100	rpcs \|= DOEXPORTS;
101	break;
102	case '?':
103	default:
104	usage();
105	}
106	argc -= optind;
107	argv += optind;
108
109	if (argc > 0)
110	host = *argv;
111	else
112	host = "localhost";
113
114	if (rpcs == 0)
115	rpcs = DODUMP;
116
117	if (rpcs & DODUMP)
118	if ((estat = callrpc(host, RPCPROG_MNT, RPCMNT_VER1,
119	RPCMNT_DUMP, xdr_void, (char *)0,
120	xdr_mntdump, (char *)&mntdump)) != 0) {
121	clnt_perrno(estat);
122	fprintf(stderr, "Can't do Mountdump rpc\n");
123	exit(1);
124	}
125	if (rpcs & DOEXPORTS)
126	if ((estat = callrpc(host, RPCPROG_MNT, RPCMNT_VER1,
127	RPCMNT_EXPORT, xdr_void, (char *)0,
128	xdr_exports, (char *)&exports)) != 0) {
129	clnt_perrno(estat);
130	fprintf(stderr, "Can't do Exports rpc\n");
131	exit(1);
132	}
133
134	/* Now just print out the results */
135	if (rpcs & DODUMP) {
136	switch (type) {
137	case ALL:
138	printf("All mount points on %s:\n", host);
139	break;
140	case DIRS:
141	printf("Directories on %s:\n", host);
142	break;
143	default:
144	printf("Hosts on %s:\n", host);
145	break;
146	};
147	print_dump(mntdump);
148	}
149	if (rpcs & DOEXPORTS) {
150	printf("Exports list on %s:\n", host);
151	exp = exports;
152	while (exp) {
153	printf("%-35s", exp->ex_dirp);
154	grp = exp->ex_groups;
155	if (grp == NULL) {
156	printf("Everyone\n");
157	} else {
158	while (grp) {
159	printf("%s ", grp->gr_name);
160	grp = grp->gr_next;
161	}
162	printf("\n");
163	}
164	exp = exp->ex_next;
165	}
166	}
167	}
168
169	/*
170	* Xdr routine for retrieving the mount dump list
171	*/
172	xdr_mntdump(xdrsp, mlp)
173	XDR *xdrsp;
174	struct mountlist **mlp;
175	{
176	register struct mountlist *mp;
177	register struct mountlist *tp;
178	register struct mountlist **otp;
179	int val, val2;
180	int bool;
181	char *strp;
182
183	mlp = (struct mountlist )0;
184	if (!xdr_bool(xdrsp, &bool))
185	return (0);
186	while (bool) {
187	mp = (struct mountlist *)malloc(sizeof(struct mountlist));
188	if (mp == NULL)
189	return (0);
190	mp->ml_left = mp->ml_right = (struct mountlist *)0;
191	strp = mp->ml_host;
192	if (!xdr_string(xdrsp, &strp, RPCMNT_NAMELEN))
193	return (0);
194	strp = mp->ml_dirp;
195	if (!xdr_string(xdrsp, &strp, RPCMNT_PATHLEN))
196	return (0);
197
198	/*
199	* Build a binary tree on sorted order of either host or dirp.
200	* Drop any duplications.
201	*/
202	if (*mlp == NULL) {
203	*mlp = mp;
204	} else {
205	tp = *mlp;
206	while (tp) {
207	val = strcmp(mp->ml_host, tp->ml_host);
208	val2 = strcmp(mp->ml_dirp, tp->ml_dirp);
209	switch (type) {
210	case ALL:
211	if (val == 0) {
212	if (val2 == 0) {
213	free((caddr_t)mp);
214	goto next;
215	}
216	val = val2;
217	}
218	break;
219	case DIRS:
220	if (val2 == 0) {
221	free((caddr_t)mp);
222	goto next;
223	}
224	val = val2;
225	break;
226	default:
227	if (val == 0) {
228	free((caddr_t)mp);
229	goto next;
230	}
231	break;
232	};
233	if (val < 0) {
234	otp = &tp->ml_left;
235	tp = tp->ml_left;
236	} else {
237	otp = &tp->ml_right;
238	tp = tp->ml_right;
239	}
240	}
241	*otp = mp;
242	}
243	next:
244	if (!xdr_bool(xdrsp, &bool))
245	return (0);
246	}
247	return (1);
248	}
249
250	/*
251	* Xdr routine to retrieve exports list
252	*/
253	xdr_exports(xdrsp, exp)
254	XDR *xdrsp;
255	struct exportslist **exp;
256	{
257	register struct exportslist *ep;
258	register struct grouplist *gp;
259	int bool, grpbool;
260	char *strp;
261
262	exp = (struct exportslist )0;
263	if (!xdr_bool(xdrsp, &bool))
264	return (0);
265	while (bool) {
266	ep = (struct exportslist *)malloc(sizeof(struct exportslist));
267	if (ep == NULL)
268	return (0);
269	ep->ex_groups = (struct grouplist *)0;
270	strp = ep->ex_dirp;
271	if (!xdr_string(xdrsp, &strp, RPCMNT_PATHLEN))
272	return (0);
273	if (!xdr_bool(xdrsp, &grpbool))
274	return (0);
275	while (grpbool) {
276	gp = (struct grouplist *)malloc(sizeof(struct grouplist));
277	if (gp == NULL)
278	return (0);
279	strp = gp->gr_name;
280	if (!xdr_string(xdrsp, &strp, RPCMNT_NAMELEN))
281	return (0);
282	gp->gr_next = ep->ex_groups;
283	ep->ex_groups = gp;
284	if (!xdr_bool(xdrsp, &grpbool))
285	return (0);
286	}
287	ep->ex_next = *exp;
288	*exp = ep;
289	if (!xdr_bool(xdrsp, &bool))
290	return (0);
291	}
292	return (1);
293	}
294
7918c07a KM	295	usage()
7918c07a KM	296	{
4c529d71	297	fprintf(stderr, "usage: showmount [-ade] host\n");
7918c07a KM	298	exit(1);
	299	}
	300
	301	/*
	302	* Print the binary tree in inorder so that output is sorted.
	303	*/
	304	print_dump(mp)
	305	struct mountlist *mp;
	306	{
	307
4e44e2fe KM	308	if (mp == NULL)
4e44e2fe KM	309	return;
7918c07a KM	310	if (mp->ml_left)
	311	print_dump(mp->ml_left);
	312	switch (type) {
	313	case ALL:
	314	printf("%s:%s\n", mp->ml_host, mp->ml_dirp);
	315	break;
	316	case DIRS:
	317	printf("%s\n", mp->ml_dirp);
	318	break;
	319	default:
	320	printf("%s\n", mp->ml_host);
	321	break;
	322	};
	323	if (mp->ml_right)
	324	print_dump(mp->ml_right);
	325	}