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
49 char *
blockcheck(char * origname)50 blockcheck(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 }
67 retry:
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