usr/src/cmd/allocate/dminfo.c - illumos-gate - Gitiles

 /*
  * CDDL HEADER START
  *
  * The contents of this file are subject to the terms of the
  * Common Development and Distribution License (the "License").
  * You may not use this file except in compliance with the License.
  *
  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
  * or http://www.opensolaris.org/os/licensing.
  * See the License for the specific language governing permissions
  * and limitations under the License.
  *
  * When distributing Covered Code, include this CDDL HEADER in each
  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  * If applicable, add the following below this CDDL HEADER, with the
  * fields enclosed by brackets "[]" replaced with your own identifying
  * information: Portions Copyright [yyyy] [name of copyright owner]
  *
  * CDDL HEADER END
  *
  * Copyright 2006 Sun Microsystems, Inc.  All rights reserved.
  * Use is subject to license terms.
  */

 #pragma ident	"%Z%%M%	%I%	%E% SMI"

 #include <locale.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 #include <string.h>
 #include <unistd.h>
 #include <malloc.h>
 #include <memory.h>
 #include <sys/param.h>
 #include <sys/types.h>
 #include <sys/file.h>
 #include <fcntl.h>
 #include <bsm/devices.h>
 #define	DMPFILE	"/etc/security/device_maps"
 #define	RETRY_SLEEP	6
 #define	RETRY_COUNT	10
 #define	EINVOKE	2
 #define	EFAIL 1

 #if !defined(TEXT_DOMAIN)
 #define	TEXT_DOMAIN "SUNW_BSM_DMINFO"
 #endif

 extern off_t lseek();

 char	*getdmapfield();
 char	*getdmapdfield();
 static void	printdmapent();
 static void	dmapi_err();

 static char	*prog_name;

 /*
  * printdmapent(dmapp) prints a devmap_t structure pointed to by dmapp.
  */
 static void
 printdmapent(dmapp)
 	devmap_t *dmapp;
 {
 	(void) printf("%s:", dmapp->dmap_devname);
 	(void) printf("%s:", dmapp->dmap_devtype);
 	(void) printf("%s", dmapp->dmap_devlist);
 	(void) printf("\n");
 }


 /*
  * dmapi_err(exit_code,err_msg) prints message pointed to by err_msg to
  * stderr. Then prints usage message to stderr. Then exits program with
  * exit_code.
  *
  */
 static void
 dmapi_err(int exit_code, char *err_msg)
 {
 	if (err_msg != NULL) {
 		(void) fprintf(stderr, "dmapinfo:%s\n", err_msg);
 	}
 	if (exit_code == EINVOKE) {
 		(void) fprintf(stderr,
 			"Usage: %s [-v] [-a] [-f filename] %s\n",
 			prog_name,
 			"[-d device ...]");
 		(void) fprintf(stderr,
 			"       %s [-v] [-a] [-f filename] %s\n",
 			prog_name,
 			"[-n name ...]");
 		(void) fprintf(stderr,
 			"       %s [-v] [-a] [-f filename] %s\n",
 			prog_name,
 			"[-t type ...]");
 		(void) fprintf(stderr,
 			"       %s [-v] [-a] [-f filename] %s\n",
 			prog_name,
 			"[-u Entry]");
 	}

 	exit(exit_code);
 }

 int
 main(int argc, char **argv)
 {
 	devmap_t *dmapp;
 	devmap_t dmap;
 	char	*mptr;
 	char	*tptr;
 	char	*nptr;
 	char	*filename = DMPFILE;
 	int	name = 0;
 	int	device = 0;
 	int	file = 0;
 	int	verbose = 0;
 	int	cntr = 0;
 	int	any = 0;
 	int	update = 0;
 	int	tp = 0;
 	int	des;
 	int	status;

 	/* Internationalization */
 	(void) setlocale(LC_ALL, "");
 	(void) textdomain(TEXT_DOMAIN);

 	/*
 	 * point prog_name to invocation name
 	 */
 	if ((tptr = strrchr(*argv, '/')) != NULL)
 		prog_name = ++tptr;
 		else
 		prog_name = *argv;
 	argc--;
 	argv++;
 	/*
 	 * parse arguments
 	 */
 	while ((argc >= 1) && (argv[0][0] == '-')) {
 		switch (argv[0][1]) {
 		case 'a':
 			any++;
 			break;
 		case 'd':
 			if ((name) || (device) || (update) || (tp)) {
 				dmapi_err(EINVOKE,
 					gettext("option conflict"));
 			}
 			device++;
 			break;
 		case 'f':
 			argc--;
 			argv++;
 			if (argc <= 0)
 				dmapi_err(EINVOKE,
 					gettext("missing file name"));
 			filename = *argv;
 			file++;
 			break;
 		case 'n':
 			if ((name) || (device) || (update) || (tp)) {
 				dmapi_err(EINVOKE,
 					gettext("option conflict"));
 			}
 			name++;
 			break;
 		case 't':
 			if ((name) || (device) || (update) || (tp)) {
 				dmapi_err(EINVOKE,
 					gettext("option conflict"));
 			}
 			tp++;
 			break;
 		case 'u':
 			if ((name) || (device) || (update) || (tp)) {
 				dmapi_err(EINVOKE,
 					gettext("option conflict"));
 			}
 			update++;
 			break;
 		case 'v':
 			verbose++;
 			break;
 		default:
 			dmapi_err(EINVOKE,
 				gettext("bad option"));
 			break;
 		}
 		argc--;
 		argv++;
 	}
 	/*
 	 * -d(device) -n(name) and -u(update) switches require at least one
 	 * argument.
 	 */
 	if (file)
 		setdmapfile(filename);
 	if ((device) || (name) || (update) || (tp)) {
 		if (argc < 1) {
 			dmapi_err(EINVOKE,
 				gettext("insufficient args for this option"));
 		}
 	}
 	if (update) {
 		/*
 		 * -u(update) switch requires only one argument
 		 */
 		if (argc != 1) {
 			dmapi_err(EINVOKE,
 				gettext("too many args for this option"));
 		}
 		/*
 		 * read entry argument from stdin into a devmap_t known as dmap
 		 */
 		if ((dmap.dmap_devname = getdmapfield(*argv)) == NULL) {
 			dmapi_err(EINVOKE,
 				gettext("Bad dmap_devname in entry argument"));
 		}
 		if ((dmap.dmap_devtype = getdmapfield(NULL)) ==
 			NULL) {
 			dmapi_err(EINVOKE,
 				gettext("Bad dmap_devtype in entry Argument"));
 		}
 		if ((dmap.dmap_devlist = getdmapfield(NULL)) ==
 			NULL) {
 			dmapi_err(EINVOKE,
 				gettext("Bad dmap_devlist in entry argument"));
 		}
 		/*
 		 * Find out how long device list is and create a buffer to
 		 * hold it.  Then copy it there. This is done since we do not
 		 * want to corrupt the existing string.
 		 */
 		cntr = strlen(dmap.dmap_devlist) + 1;
 		mptr = calloc((unsigned)cntr, sizeof (char));
 		if (mptr == NULL) {
 			if (verbose) {
 				(void) fprintf(stderr,
 					gettext(
 					"dmapinfo: Cannot calloc memory\n"));
 			}
 			exit(1);
 		}
 		(void) strcpy(mptr, dmap.dmap_devlist);
 		/*
 		 * open the device maps file for read/ write. We are not
 		 * sure we want to write to it yet but we may and this is a
 		 * easy way to get the file descriptor. We want the file
 		 * descriptor so we can lock the file.
 		 */
 		if ((des = open(filename, O_RDWR)) < 0) {
 			if (verbose) {
 				(void) fprintf(stderr,
 				gettext("dmapinfo: Cannot open %s\n"),
 				    filename);
 			}
 			exit(1);
 		}
 		cntr = 0;
 #ifdef CMW
 		while ((status = flock(des, LOCK_EX | LOCK_NB) == -1) &&
 			(cntr++ < RETRY_COUNT)) {
 			(void) sleep(RETRY_SLEEP);
 		}
 #else
 		while (((status = lockf(des, F_TLOCK, 0)) == -1) &&
 			(cntr++ < RETRY_COUNT)) {
 			(void) sleep(RETRY_SLEEP);
 		}
 #endif
 		if (status == -1) {
 			if (verbose) {
 				(void) fprintf(stderr,
 			gettext("dmapinfo: Cannot lock %s\n"), filename);
 			}
 			exit(1);
 		}
 		/*
 		 * Now that we have the device_maps file then lets check
 		 * for previous entrys with the same name.  If it already
 		 * exists then we will exit with status of 1.
 		 */
 		if (verbose) {
 			(void) fprintf(stderr,
 			gettext("dmapinfo: Checking %s for name (%s).\n"),
 				filename, dmap.dmap_devname);
 		}
 		if (getdmapnam(dmap.dmap_devname) != NULL) {
 			if (verbose) {
 				(void) fprintf(stderr,
 			gettext("dmapinfo: Device name (%s) found in %s.\n"),
 					dmap.dmap_devname, filename);
 			}
 			exit(1);
 		}
 		if (verbose) {
 			(void) fprintf(stderr,
 		gettext("dmapinfo: Device name (%s) not found in %s.\n"),
 				dmap.dmap_devname, filename);
 		}
 		/*
 		 * We now Know name does not exist and now we need to check
 		 * to see if any of the devices in the device list are in the
 		 * device maps file. If the already exist then we will exit
 		 * with a status of 1.
 		 */
 		nptr = mptr;
 		nptr = getdmapdfield(nptr);
 		while (nptr) {
 			if (verbose) {
 				(void) fprintf(stderr,
 				    gettext("dmapinfo: "
 					"Check %s for device (%s).\n"),
 				    filename, nptr);
 			}
 			if (getdmapdev(nptr) != NULL) {
 				if (verbose) {
 					(void) fprintf(stderr,
 					    gettext("dmapinfo: "
 						"Device (%s) found in %s.\n"),
 					    nptr, filename);
 				}
 				exit(1);
 			}
 			if (verbose) {
 				(void) fprintf(stderr,
 				    gettext("dmapinfo: "
 					"Device (%s) not found in %s.\n"),
 				    nptr, filename);
 			}
 			nptr = getdmapdfield(NULL);
 		}
 		/*
 		 * Good the entry is uniq. So lets find out how long it is
 		 * and add it to the end of device maps file in a pretty
 		 * way.
 		 */
 		if (verbose) {
 			(void) fprintf(stderr, "dmapinfo: Adding entry to %s\n",
 				filename);
 			printdmapent(&dmap);
 		}
 		cntr = strlen(dmap.dmap_devname);
 		cntr += strlen(dmap.dmap_devtype);
 		cntr += strlen(dmap.dmap_devlist);
 		cntr += 15;
 		tptr = calloc((unsigned)cntr, sizeof (char));
 		if (tptr == NULL) {
 			exit(1);
 		}
 		(void) strcat(tptr, dmap.dmap_devname);
 		(void) strcat(tptr, ":\\\n\t");
 		(void) strcat(tptr, dmap.dmap_devtype);
 		(void) strcat(tptr, ":\\\n\t");
 		(void) strcat(tptr, dmap.dmap_devlist);
 		(void) strcat(tptr, ":\\\n\t");
 		(void) strcat(tptr, "\n");
 		cntr = strlen(tptr);
 #ifdef CMW
 		if (lseek(des, 0L, L_XTND) == -1L) {
 			exit(1);
 		}
 #else
 		if (lseek(des, 0L, SEEK_END) == -1L) {
 			exit(1);
 		}
 #endif
 		if (write(des, tptr, cntr) == -1) {
 			exit(1);
 		}
 		if (close(des) == -1) {
 			exit(1);
 		}
 		if (verbose) {
 			(void) fprintf(stderr, "dmapinfo: Entry added to %s\n",
 				filename);
 		}
 		exit(0);
 	}
 	/*
 	 * Look for devices in device_maps file. If verbose switch is set
 	 * then print entry(s) found. If "any" switch  is set then, if any
 	 * device is found will result in a exit status of 0. If "any" switch
 	 * is not set then, if any device is not will result in a exit status
 	 * of 1.
 	 */
 	if (device) {
 		setdmapent();
 		while (argc >= 1) {
 			if ((dmapp = getdmapdev(*argv)) != NULL) {
 				if (verbose) {
 					printdmapent(dmapp);
 				}
 				cntr++;
 			} else if (any == 0) {
 				enddmapent();
 				exit(1);
 			}
 			argc--;
 			argv++;
 		}
 		enddmapent();
 		if (cntr != 0)
 			exit(0);
 		exit(1);
 	}
 	/*
 	 * Look for names in device_maps file. If verbose switch is set
 	 * then print entry(s) found. If "any" switch  is set then, if any
 	 * name is found will result in a exit status of 0. If "any" switch
 	 * is not set then, if any name is not will result in a exit status
 	 * of 1.
 	 */
 	if (name) {
 		setdmapent();
 		while (argc >= 1) {
 			if ((dmapp = getdmapnam(*argv)) != NULL) {
 				if (verbose) {
 					printdmapent(dmapp);
 				}
 				cntr++;
 			} else if (any == 0)
 				exit(1);
 			argc--;
 			argv++;
 		}
 		enddmapent();
 		if (cntr != 0)
 			exit(0);
 		exit(1);
 	}
 	/*
 	 * Read all entrys from device maps file. If verbose flag is set
 	 * then all the device maps files are printed.  This is useful for
 	 * piping to grep. Also this option used without the verbose option
 	 * is useful to check for device maps file and for at least one
 	 * entry.  If the device maps file is found and there is one entry
 	 * the return status is 0.
 	 */
 	if (tp) {
 		cntr = 0;
 		setdmapent();
 		while (argc >= 1) {
 			while ((dmapp = getdmaptype(*argv)) != 0) {
 				cntr++;
 				if (verbose) {
 					printdmapent(dmapp);
 				}
 			}
 			if ((any == 0) && (cntr == 0)) {
 				enddmapent();
 				exit(1);
 			}
 			argc--;
 			argv++;
 		}
 		enddmapent();
 		if (cntr == 0)
 			exit(1);
 		exit(0);
 	}
 	/*
 	 * Read all entrys from device maps file. If verbose flag is set
 	 * then all the device maps files are printed.  This is useful for
 	 * piping to grep. Also this option used without the verbose option
 	 * is useful to check for device maps file and for atleast one
 	 * entry.  If the device maps file is found and there is one entry
 	 * the return status is 0.
 	 */
 	cntr = 0;
 	setdmapent();
 	while ((dmapp = getdmapent()) != 0) {
 		cntr++;
 		if (verbose) {
 			printdmapent(dmapp);
 		}
 	}
 	enddmapent();
 	if (cntr == 0)
 		exit(1);
 	return (0);
 }
	/*
	* CDDL HEADER START
	*
	* The contents of this file are subject to the terms of the
	* Common Development and Distribution License (the "License").
	* You may not use this file except in compliance with the License.
	*
	* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
	* or http://www.opensolaris.org/os/licensing.
	* See the License for the specific language governing permissions
	* and limitations under the License.
	*
	* When distributing Covered Code, include this CDDL HEADER in each
	* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
	* If applicable, add the following below this CDDL HEADER, with the
	* fields enclosed by brackets "[]" replaced with your own identifying
	* information: Portions Copyright [yyyy] [name of copyright owner]
	*
	* CDDL HEADER END
	*
	* Copyright 2006 Sun Microsystems, Inc. All rights reserved.
	* Use is subject to license terms.
	*/

	#pragma ident "%Z%%M% %I% %E% SMI"

	#include <locale.h>
	#include <stdio.h>
	#include <stdlib.h>
	#include <string.h>
	#include <string.h>
	#include <unistd.h>
	#include <malloc.h>
	#include <memory.h>
	#include <sys/param.h>
	#include <sys/types.h>
	#include <sys/file.h>
	#include <fcntl.h>
	#include <bsm/devices.h>
	#define DMPFILE "/etc/security/device_maps"
	#define RETRY_SLEEP 6
	#define RETRY_COUNT 10
	#define EINVOKE 2
	#define EFAIL 1

	#if !defined(TEXT_DOMAIN)
	#define TEXT_DOMAIN "SUNW_BSM_DMINFO"
	#endif

	extern off_t lseek();

	char *getdmapfield();
	char *getdmapdfield();
	static void printdmapent();
	static void dmapi_err();

	static char *prog_name;

	/*
	* printdmapent(dmapp) prints a devmap_t structure pointed to by dmapp.
	*/
	static void
	printdmapent(dmapp)
	devmap_t *dmapp;
	{
	(void) printf("%s:", dmapp->dmap_devname);
	(void) printf("%s:", dmapp->dmap_devtype);
	(void) printf("%s", dmapp->dmap_devlist);
	(void) printf("\n");
	}


	/*
	* dmapi_err(exit_code,err_msg) prints message pointed to by err_msg to
	* stderr. Then prints usage message to stderr. Then exits program with
	* exit_code.
	*
	*/
	static void
	dmapi_err(int exit_code, char *err_msg)
	{
	if (err_msg != NULL) {
	(void) fprintf(stderr, "dmapinfo:%s\n", err_msg);
	}
	if (exit_code == EINVOKE) {
	(void) fprintf(stderr,
	"Usage: %s [-v] [-a] [-f filename] %s\n",
	prog_name,
	"[-d device ...]");
	(void) fprintf(stderr,
	" %s [-v] [-a] [-f filename] %s\n",
	prog_name,
	"[-n name ...]");
	(void) fprintf(stderr,
	" %s [-v] [-a] [-f filename] %s\n",
	prog_name,
	"[-t type ...]");
	(void) fprintf(stderr,
	" %s [-v] [-a] [-f filename] %s\n",
	prog_name,
	"[-u Entry]");
	}

	exit(exit_code);
	}

	int
	main(int argc, char **argv)
	{
	devmap_t *dmapp;
	devmap_t dmap;
	char *mptr;
	char *tptr;
	char *nptr;
	char *filename = DMPFILE;
	int name = 0;
	int device = 0;
	int file = 0;
	int verbose = 0;
	int cntr = 0;
	int any = 0;
	int update = 0;
	int tp = 0;
	int des;
	int status;

	/* Internationalization */
	(void) setlocale(LC_ALL, "");
	(void) textdomain(TEXT_DOMAIN);

	/*
	* point prog_name to invocation name
	*/
	if ((tptr = strrchr(*argv, '/')) != NULL)
	prog_name = ++tptr;
	else
	prog_name = *argv;
	argc--;
	argv++;
	/*
	* parse arguments
	*/
	while ((argc >= 1) && (argv[0][0] == '-')) {
	switch (argv[0][1]) {
	case 'a':
	any++;
	break;
	case 'd':
	if ((name) \|\| (device) \|\| (update) \|\| (tp)) {
	dmapi_err(EINVOKE,
	gettext("option conflict"));
	}
	device++;
	break;
	case 'f':
	argc--;
	argv++;
	if (argc <= 0)
	dmapi_err(EINVOKE,
	gettext("missing file name"));
	filename = *argv;
	file++;
	break;
	case 'n':
	if ((name) \|\| (device) \|\| (update) \|\| (tp)) {
	dmapi_err(EINVOKE,
	gettext("option conflict"));
	}
	name++;
	break;
	case 't':
	if ((name) \|\| (device) \|\| (update) \|\| (tp)) {
	dmapi_err(EINVOKE,
	gettext("option conflict"));
	}
	tp++;
	break;
	case 'u':
	if ((name) \|\| (device) \|\| (update) \|\| (tp)) {
	dmapi_err(EINVOKE,
	gettext("option conflict"));
	}
	update++;
	break;
	case 'v':
	verbose++;
	break;
	default:
	dmapi_err(EINVOKE,
	gettext("bad option"));
	break;
	}
	argc--;
	argv++;
	}
	/*
	* -d(device) -n(name) and -u(update) switches require at least one
	* argument.
	*/
	if (file)
	setdmapfile(filename);
	if ((device) \|\| (name) \|\| (update) \|\| (tp)) {
	if (argc < 1) {
	dmapi_err(EINVOKE,
	gettext("insufficient args for this option"));
	}
	}
	if (update) {
	/*
	* -u(update) switch requires only one argument
	*/
	if (argc != 1) {
	dmapi_err(EINVOKE,
	gettext("too many args for this option"));
	}
	/*
	* read entry argument from stdin into a devmap_t known as dmap
	*/
	if ((dmap.dmap_devname = getdmapfield(*argv)) == NULL) {
	dmapi_err(EINVOKE,
	gettext("Bad dmap_devname in entry argument"));
	}
	if ((dmap.dmap_devtype = getdmapfield(NULL)) ==
	NULL) {
	dmapi_err(EINVOKE,
	gettext("Bad dmap_devtype in entry Argument"));
	}
	if ((dmap.dmap_devlist = getdmapfield(NULL)) ==
	NULL) {
	dmapi_err(EINVOKE,
	gettext("Bad dmap_devlist in entry argument"));
	}
	/*
	* Find out how long device list is and create a buffer to
	* hold it. Then copy it there. This is done since we do not
	* want to corrupt the existing string.
	*/
	cntr = strlen(dmap.dmap_devlist) + 1;
	mptr = calloc((unsigned)cntr, sizeof (char));
	if (mptr == NULL) {
	if (verbose) {
	(void) fprintf(stderr,
	gettext(
	"dmapinfo: Cannot calloc memory\n"));
	}
	exit(1);
	}
	(void) strcpy(mptr, dmap.dmap_devlist);
	/*
	* open the device maps file for read/ write. We are not
	* sure we want to write to it yet but we may and this is a
	* easy way to get the file descriptor. We want the file
	* descriptor so we can lock the file.
	*/
	if ((des = open(filename, O_RDWR)) < 0) {
	if (verbose) {
	(void) fprintf(stderr,
	gettext("dmapinfo: Cannot open %s\n"),
	filename);
	}
	exit(1);
	}
	cntr = 0;
	#ifdef CMW
	while ((status = flock(des, LOCK_EX \| LOCK_NB) == -1) &&
	(cntr++ < RETRY_COUNT)) {
	(void) sleep(RETRY_SLEEP);
	}
	#else
	while (((status = lockf(des, F_TLOCK, 0)) == -1) &&
	(cntr++ < RETRY_COUNT)) {
	(void) sleep(RETRY_SLEEP);
	}
	#endif
	if (status == -1) {
	if (verbose) {
	(void) fprintf(stderr,
	gettext("dmapinfo: Cannot lock %s\n"), filename);
	}
	exit(1);
	}
	/*
	* Now that we have the device_maps file then lets check
	* for previous entrys with the same name. If it already
	* exists then we will exit with status of 1.
	*/
	if (verbose) {
	(void) fprintf(stderr,
	gettext("dmapinfo: Checking %s for name (%s).\n"),
	filename, dmap.dmap_devname);
	}
	if (getdmapnam(dmap.dmap_devname) != NULL) {
	if (verbose) {
	(void) fprintf(stderr,
	gettext("dmapinfo: Device name (%s) found in %s.\n"),
	dmap.dmap_devname, filename);
	}
	exit(1);
	}
	if (verbose) {
	(void) fprintf(stderr,
	gettext("dmapinfo: Device name (%s) not found in %s.\n"),
	dmap.dmap_devname, filename);
	}
	/*
	* We now Know name does not exist and now we need to check
	* to see if any of the devices in the device list are in the
	* device maps file. If the already exist then we will exit
	* with a status of 1.
	*/
	nptr = mptr;
	nptr = getdmapdfield(nptr);
	while (nptr) {
	if (verbose) {
	(void) fprintf(stderr,
	gettext("dmapinfo: "
	"Check %s for device (%s).\n"),
	filename, nptr);
	}
	if (getdmapdev(nptr) != NULL) {
	if (verbose) {
	(void) fprintf(stderr,
	gettext("dmapinfo: "
	"Device (%s) found in %s.\n"),
	nptr, filename);
	}
	exit(1);
	}
	if (verbose) {
	(void) fprintf(stderr,
	gettext("dmapinfo: "
	"Device (%s) not found in %s.\n"),
	nptr, filename);
	}
	nptr = getdmapdfield(NULL);
	}
	/*
	* Good the entry is uniq. So lets find out how long it is
	* and add it to the end of device maps file in a pretty
	* way.
	*/
	if (verbose) {
	(void) fprintf(stderr, "dmapinfo: Adding entry to %s\n",
	filename);
	printdmapent(&dmap);
	}
	cntr = strlen(dmap.dmap_devname);
	cntr += strlen(dmap.dmap_devtype);
	cntr += strlen(dmap.dmap_devlist);
	cntr += 15;
	tptr = calloc((unsigned)cntr, sizeof (char));
	if (tptr == NULL) {
	exit(1);
	}
	(void) strcat(tptr, dmap.dmap_devname);
	(void) strcat(tptr, ":\\\n\t");
	(void) strcat(tptr, dmap.dmap_devtype);
	(void) strcat(tptr, ":\\\n\t");
	(void) strcat(tptr, dmap.dmap_devlist);
	(void) strcat(tptr, ":\\\n\t");
	(void) strcat(tptr, "\n");
	cntr = strlen(tptr);
	#ifdef CMW
	if (lseek(des, 0L, L_XTND) == -1L) {
	exit(1);
	}
	#else
	if (lseek(des, 0L, SEEK_END) == -1L) {
	exit(1);
	}
	#endif
	if (write(des, tptr, cntr) == -1) {
	exit(1);
	}
	if (close(des) == -1) {
	exit(1);
	}
	if (verbose) {
	(void) fprintf(stderr, "dmapinfo: Entry added to %s\n",
	filename);
	}
	exit(0);
	}
	/*
	* Look for devices in device_maps file. If verbose switch is set
	* then print entry(s) found. If "any" switch is set then, if any
	* device is found will result in a exit status of 0. If "any" switch
	* is not set then, if any device is not will result in a exit status
	* of 1.
	*/
	if (device) {
	setdmapent();
	while (argc >= 1) {
	if ((dmapp = getdmapdev(*argv)) != NULL) {
	if (verbose) {
	printdmapent(dmapp);
	}
	cntr++;
	} else if (any == 0) {
	enddmapent();
	exit(1);
	}
	argc--;
	argv++;
	}
	enddmapent();
	if (cntr != 0)
	exit(0);
	exit(1);
	}
	/*
	* Look for names in device_maps file. If verbose switch is set
	* then print entry(s) found. If "any" switch is set then, if any
	* name is found will result in a exit status of 0. If "any" switch
	* is not set then, if any name is not will result in a exit status
	* of 1.
	*/
	if (name) {
	setdmapent();
	while (argc >= 1) {
	if ((dmapp = getdmapnam(*argv)) != NULL) {
	if (verbose) {
	printdmapent(dmapp);
	}
	cntr++;
	} else if (any == 0)
	exit(1);
	argc--;
	argv++;
	}
	enddmapent();
	if (cntr != 0)
	exit(0);
	exit(1);
	}
	/*
	* Read all entrys from device maps file. If verbose flag is set
	* then all the device maps files are printed. This is useful for
	* piping to grep. Also this option used without the verbose option
	* is useful to check for device maps file and for at least one
	* entry. If the device maps file is found and there is one entry
	* the return status is 0.
	*/
	if (tp) {
	cntr = 0;
	setdmapent();
	while (argc >= 1) {
	while ((dmapp = getdmaptype(*argv)) != 0) {
	cntr++;
	if (verbose) {
	printdmapent(dmapp);
	}
	}
	if ((any == 0) && (cntr == 0)) {
	enddmapent();
	exit(1);
	}
	argc--;
	argv++;
	}
	enddmapent();
	if (cntr == 0)
	exit(1);
	exit(0);
	}
	/*
	* Read all entrys from device maps file. If verbose flag is set
	* then all the device maps files are printed. This is useful for
	* piping to grep. Also this option used without the verbose option
	* is useful to check for device maps file and for atleast one
	* entry. If the device maps file is found and there is one entry
	* the return status is 0.
	*/
	cntr = 0;
	setdmapent();
	while ((dmapp = getdmapent()) != 0) {
	cntr++;
	if (verbose) {
	printdmapent(dmapp);
	}
	}
	enddmapent();
	if (cntr == 0)
	exit(1);
	return (0);
	}