utilities.c revision 114589 
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#if 0
35#ifndef lint
36static const char sccsid[] = "@(#)utilities.c	8.6 (Berkeley) 5/19/95";
37#endif /* not lint */
38#endif
39#include <sys/cdefs.h>
40__FBSDID("$FreeBSD: head/sbin/fsck_ffs/utilities.c 114589 2003-05-03 18:41:59Z obrien $");
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(char *origname)
65{
66	struct stat stblock;
67	char *newname, *cp;
68	struct fstab *fsinfo;
69	int retried = 0, len;
70	static char device[MAXPATHLEN];
71
72	newname = origname;
73	if (stat(newname, &stblock) < 0) {
74		cp = strrchr(newname, '/');
75		if (cp == 0) {
76			(void)snprintf(device, sizeof(device), "%s%s",
77				_PATH_DEV, newname);
78			newname = device;
79		}
80	}
81retry:
82	if (stat(newname, &stblock) < 0) {
83		printf("Can't stat %s: %s\n", newname, strerror(errno));
84		return (origname);
85	}
86	switch(stblock.st_mode & S_IFMT) {
87	case S_IFCHR:
88	case S_IFBLK:
89		return(newname);
90	case S_IFDIR:
91		if (retried)
92			break;
93
94		len = strlen(origname) - 1;
95		if (len > 0 && origname[len] == '/')
96			/* remove trailing slash */
97			origname[len] = '\0';
98		if ((fsinfo = getfsfile(origname)) == NULL) {
99			printf(
100			    "Can't resolve %s to character special device.\n",
101			    origname);
102			return (origname);
103		}
104		newname = fsinfo->fs_spec;
105		retried++;
106		goto retry;
107	}
108	/*
109	 * Not a block or character device, just return name and
110	 * let the user decide whether to use it.
111	 */
112	return (origname);
113}
114
115void
116infohandler(int sig __unused)
117{
118	got_siginfo = 1;
119}
120