utilities.c revision 86514 
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 86514 2001-11-17 23:48:21Z 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 <paths.h>
56#include <stdio.h>
57#include <stdlib.h>
58#include <unistd.h>
59
60#include "fsck.h"
61
62
63char *
64blockcheck(origname)
65	char *origname;
66{
67	struct stat stblock;
68	char *newname, *cp;
69	struct fstab *fsinfo;
70	int retried = 0, len;
71	static char device[MAXPATHLEN];
72
73	newname = origname;
74	if (stat(newname, &stblock) < 0) {
75		cp = strrchr(newname, '/');
76		if (cp == 0) {
77			(void)snprintf(device, sizeof(device), "%s%s",
78				_PATH_DEV, newname);
79			newname = device;
80		}
81	}
82retry:
83	if (stat(newname, &stblock) < 0) {
84		printf("Can't stat %s: %s\n", newname, strerror(errno));
85		return (origname);
86	}
87	switch(stblock.st_mode & S_IFMT) {
88	case S_IFCHR:
89	case S_IFBLK:
90		return(newname);
91	case S_IFDIR:
92		if (retried)
93			break;
94
95		len = strlen(origname) - 1;
96		if (len > 0 && origname[len] == '/')
97			/* remove trailing slash */
98			origname[len] = '\0';
99		if ((fsinfo = getfsfile(origname)) == NULL) {
100			printf(
101			    "Can't resolve %s to character special device.\n",
102			    origname);
103			return (origname);
104		}
105		newname = fsinfo->fs_spec;
106		retried++;
107		goto retry;
108	}
109	/*
110	 * Not a block or character device, just return name and
111	 * let the user decide whether to use it.
112	 */
113	return (origname);
114}
115
116void
117infohandler(sig)
118	int sig;
119{
120	got_siginfo = 1;
121}
122