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
34 static 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: stable/12/sbin/fsck_ffs/utilities.c 357993 2020-02-16 07:06:25Z delphij $");
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 <errno.h>
49 #include <string.h>
50 #include <fstab.h>
51 #include <paths.h>
52 #include <stdio.h>
53
54 #include "fsck.h"
55
56
57 char *
blockcheck(char * origname)58 blockcheck(char *origname)
59 {
60 struct stat stblock;
61 char *newname, *cp;
62 struct fstab *fsinfo;
63 int retried = 0, len;
64 static char device[MAXPATHLEN];
65
66 newname = origname;
67 if (stat(newname, &stblock) < 0) {
68 cp = strrchr(newname, '/');
69 if (cp == NULL) {
70 (void)snprintf(device, sizeof(device), "%s%s",
71 _PATH_DEV, newname);
72 newname = device;
73 }
74 }
75 retry:
76 if (stat(newname, &stblock) < 0) {
77 printf("Can't stat %s: %s\n", newname, strerror(errno));
78 return (origname);
79 }
80 switch(stblock.st_mode & S_IFMT) {
81 case S_IFCHR:
82 case S_IFBLK:
83 return(newname);
84 case S_IFDIR:
85 if (retried)
86 break;
87
88 len = strlen(origname) - 1;
89 if (len > 0 && origname[len] == '/')
90 /* remove trailing slash */
91 origname[len] = '\0';
92 if ((fsinfo = getfsfile(origname)) == NULL) {
93 printf(
94 "Can't resolve %s to character special device.\n",
95 origname);
96 return (origname);
97 }
98 newname = fsinfo->fs_spec;
99 retried++;
100 goto retry;
101 }
102 /*
103 * Not a block or character device, just return name and
104 * let the user decide whether to use it.
105 */
106 return (origname);
107 }
108
109