flex_dev.c revision 9781:ccf49524d5dc 
1/*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21
22/*
23 * Copyright 1993 Sun Microsystems, Inc.  All rights reserved.
24 * Use is subject to license terms.
25 */
26
27
28
29#include <stdio.h>
30#include <stdlib.h>
31#include <unistd.h>
32#include <limits.h>
33#include <string.h>
34#include <errno.h>
35#include <libintl.h>
36#include <pkglib.h>
37#include "libadm.h"
38
39#define	ERR_CHDIR	"unable to chdir back to <%s>, errno=%d"
40#define	ERR_GETCWD	"unable to determine the current working directory, " \
41			"errno=%d"
42
43char *
44flex_device(char *device_name, int dev_ok)
45{
46	char		new_device_name[PATH_MAX];
47	char		*np = device_name;
48	char		*cwd = NULL;
49
50	if (!device_name || !*device_name)		/* NULL or empty */
51		return (np);
52
53	if (dev_ok == 1 && listdev(np) != (char **) NULL) /* device.tab */
54		return (np);
55
56	if (!strncmp(np, "/dev", 4))			/* /dev path */
57		return (np);
58
59	if ((cwd = getcwd(NULL, PATH_MAX)) == NULL) {
60		progerr(gettext(ERR_GETCWD), errno);
61		exit(99);
62	}
63
64	if (realpath(np, new_device_name) == NULL) {	/* path */
65		if (chdir(cwd) == -1) {
66			progerr(gettext(ERR_CHDIR), cwd, errno);
67			(void) free(cwd);
68			exit(99);
69		}
70		if (*np != '/' && dev_ok == 2) {
71			(void) sprintf(new_device_name, "%s/%s", cwd, np);
72			canonize(new_device_name);
73			if ((np = strdup(new_device_name)) == NULL)
74				np = device_name;
75		}
76		(void) free(cwd);
77		return (np);
78	}
79
80	if (strcmp(np, new_device_name)) {
81		if ((np = strdup(new_device_name)) == NULL)
82			np = device_name;
83	}
84
85	(void) free(cwd);
86	return (np);
87}
88