1/*-
2 * SPDX-License-Identifier: BSD-3-Clause
3 *
4 * Copyright (c) 1980, 1986, 1993
5 *	The Regents of the University of California.  All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 * 3. Neither the name of the University nor the names of its contributors
16 *    may be used to endorse or promote products derived from this software
17 *    without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * SUCH DAMAGE.
30 */
31
32#include <sys/param.h>
33#include <sys/types.h>
34#include <sys/stat.h>
35
36#include <ufs/ufs/dinode.h>
37#include <ufs/ufs/dir.h>
38#include <ufs/ffs/fs.h>
39
40#include <errno.h>
41#include <string.h>
42#include <fstab.h>
43#include <paths.h>
44#include <stdio.h>
45
46#include "fsck.h"
47
48
49char *
50blockcheck(char *origname)
51{
52	struct stat stblock;
53	char *newname, *cp;
54	struct fstab *fsinfo;
55	int retried = 0, len;
56	static char device[MAXPATHLEN];
57
58	newname = origname;
59	if (stat(newname, &stblock) < 0) {
60		cp = strrchr(newname, '/');
61		if (cp == NULL) {
62			(void)snprintf(device, sizeof(device), "%s%s",
63				_PATH_DEV, newname);
64			newname = device;
65		}
66	}
67retry:
68	if (stat(newname, &stblock) < 0) {
69		printf("Can't stat %s: %s\n", newname, strerror(errno));
70		return (origname);
71	}
72	switch(stblock.st_mode & S_IFMT) {
73	case S_IFCHR:
74	case S_IFBLK:
75		return(newname);
76	case S_IFDIR:
77		if (retried)
78			break;
79
80		len = strlen(origname) - 1;
81		if (len > 0 && origname[len] == '/')
82			/* remove trailing slash */
83			origname[len] = '\0';
84		if ((fsinfo = getfsfile(origname)) == NULL) {
85			printf(
86			    "Can't resolve %s to character special device.\n",
87			    origname);
88			return (origname);
89		}
90		newname = fsinfo->fs_spec;
91		retried++;
92		goto retry;
93	}
94	/*
95	 * Not a block or character device, just return name and
96	 * let the user decide whether to use it.
97	 */
98	return (origname);
99}
100
101