utilities.c revision 70050 
1/*
2 * Copyright (c) 1980, 1986, 1993
3 *	The Regents of the University of California.  All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 *    must display the following acknowledgement:
15 *	This product includes software developed by the University of
16 *	California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 *    may be used to endorse or promote products derived from this software
19 *    without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 */
33
34#ifndef lint
35#if 0
36static const char sccsid[] = "@(#)utilities.c	8.6 (Berkeley) 5/19/95";
37#endif
38static const char rcsid[] =
39  "$FreeBSD: head/sbin/fsck_ffs/utilities.c 70050 2000-12-15 14:23:55Z iedowse $";
40#endif /* not lint */
41
42#include <sys/param.h>
43#include <sys/types.h>
44#include <sys/stat.h>
45
46#include <ufs/ufs/dinode.h>
47#include <ufs/ufs/dir.h>
48#include <ufs/ffs/fs.h>
49
50#include <err.h>
51#include <errno.h>
52#include <string.h>
53#include <ctype.h>
54#include <fstab.h>
55#include <stdio.h>
56#include <stdlib.h>
57#include <unistd.h>
58
59#include "fsck.h"
60
61
62char *
63blockcheck(origname)
64	char *origname;
65{
66	struct stat stslash, stblock, stchar;
67	char *newname, *raw;
68	struct fstab *fsinfo;
69	int retried = 0, len;
70
71	newname = origname;
72retry:
73	if (stat(newname, &stblock) < 0) {
74		printf("Can't stat %s: %s\n", newname, strerror(errno));
75		return (origname);
76	}
77	switch(stblock.st_mode & S_IFMT) {
78	case S_IFCHR:
79	case S_IFBLK:
80		return(newname);
81	case S_IFDIR:
82		if (retried)
83			break;
84
85		len = strlen(origname) - 1;
86		if (len > 0 && origname[len] == '/')
87			/* remove trailing slash */
88			origname[len] = '\0';
89		if ((fsinfo = getfsfile(origname)) == NULL) {
90			printf("Can't resolve %s to character special device",
91			    origname);
92			return (0);
93		}
94		newname = fsinfo->fs_spec;
95		retried++;
96		goto retry;
97	}
98	/*
99	 * Not a block or character device, just return name and
100	 * let the user decide whether to use it.
101	 */
102	return (origname);
103}
104
105void
106infohandler(sig)
107	int sig;
108{
109	got_siginfo = 1;
110}
111