/*
 * 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 1993 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */



#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <limits.h>
#include <string.h>
#include <errno.h>
#include <libintl.h>
#include <pkglib.h>
#include "libadm.h"

#define ERR_CHDIR       "unable to chdir back to <%s>, errno=%d"
#define ERR_GETCWD      "unable to determine the current working directory, " \
                        "errno=%d"

char *
flex_device(char *device_name, int dev_ok)
{
        char            new_device_name[PATH_MAX];
        char            *np = device_name;
        char            *cwd = NULL;

        if (!device_name || !*device_name)              /* NULL or empty */
                return (np);

        if (dev_ok == 1 && listdev(np) != (char **) NULL) /* device.tab */
                return (np);

        if (!strncmp(np, "/dev", 4))                    /* /dev path */
                return (np);

        if ((cwd = getcwd(NULL, PATH_MAX)) == NULL) {
                progerr(gettext(ERR_GETCWD), errno);
                exit(99);
        }

        if (realpath(np, new_device_name) == NULL) {    /* path */
                if (chdir(cwd) == -1) {
                        progerr(gettext(ERR_CHDIR), cwd, errno);
                        (void) free(cwd);
                        exit(99);
                }
                if (*np != '/' && dev_ok == 2) {
                        (void) sprintf(new_device_name, "%s/%s", cwd, np);
                        canonize(new_device_name);
                        if ((np = strdup(new_device_name)) == NULL)
                                np = device_name;
                }
                (void) free(cwd);
                return (np);
        }

        if (strcmp(np, new_device_name)) {
                if ((np = strdup(new_device_name)) == NULL)
                        np = device_name;
        }

        (void) free(cwd);
        return (np);
}