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#if 0
33#ifndef lint
34static const char sccsid[] = "@(#)utilities.c	8.6 (Berkeley) 5/19/95";
35#endif /* not lint */
36#endif
37#include <sys/cdefs.h>
38__FBSDID("$FreeBSD$");
39
40#include <sys/param.h>
41#include <sys/types.h>
42#include <sys/stat.h>
43
44#include <ufs/ufs/dinode.h>
45#include <ufs/ufs/dir.h>
46#include <ufs/ffs/fs.h>
47
48#include <err.h>
49#include <errno.h>
50#include <string.h>
51#include <ctype.h>
52#include <fstab.h>
53#include <paths.h>
54#include <stdio.h>
55#include <stdlib.h>
56#include <unistd.h>
57
58#include "fsck.h"
59
60
61char *
62blockcheck(char *origname)
63{
64	struct stat stblock;
65	char *newname, *cp;
66	struct fstab *fsinfo;
67	int retried = 0, len;
68	static char device[MAXPATHLEN];
69
70	newname = origname;
71	if (stat(newname, &stblock) < 0) {
72		cp = strrchr(newname, '/');
73		if (cp == NULL) {
74			(void)snprintf(device, sizeof(device), "%s%s",
75				_PATH_DEV, newname);
76			newname = device;
77		}
78	}
79retry:
80	if (stat(newname, &stblock) < 0) {
81		printf("Can't stat %s: %s\n", newname, strerror(errno));
82		return (origname);
83	}
84	switch(stblock.st_mode & S_IFMT) {
85	case S_IFCHR:
86	case S_IFBLK:
87		return(newname);
88	case S_IFDIR:
89		if (retried)
90			break;
91
92		len = strlen(origname) - 1;
93		if (len > 0 && origname[len] == '/')
94			/* remove trailing slash */
95			origname[len] = '\0';
96		if ((fsinfo = getfsfile(origname)) == NULL) {
97			printf(
98			    "Can't resolve %s to character special device.\n",
99			    origname);
100			return (origname);
101		}
102		newname = fsinfo->fs_spec;
103		retried++;
104		goto retry;
105	}
106	/*
107	 * Not a block or character device, just return name and
108	 * let the user decide whether to use it.
109	 */
110	return (origname);
111}
112
113