xref: /freebsd/sbin/clri/clri.c (revision a3d27cad4d21d5e831d90220d9c15778ef3801a5)
1 /*-
2  * SPDX-License-Identifier: BSD-3-Clause
3  *
4  * Copyright (c) 1990, 1993
5  *	The Regents of the University of California.  All rights reserved.
6  *
7  * This code is derived from software contributed to Berkeley by
8  * Rich $alz of BBN Inc.
9  *
10  * Redistribution and use in source and binary forms, with or without
11  * modification, are permitted provided that the following conditions
12  * are met:
13  * 1. Redistributions of source code must retain the above copyright
14  *    notice, this list of conditions and the following disclaimer.
15  * 2. Redistributions in binary form must reproduce the above copyright
16  *    notice, this list of conditions and the following disclaimer in the
17  *    documentation and/or other materials provided with the distribution.
18  * 3. Neither the name of the University nor the names of its contributors
19  *    may be used to endorse or promote products derived from this software
20  *    without specific prior written permission.
21  *
22  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
23  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
26  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32  * SUCH DAMAGE.
33  */
34 
35 #if 0
36 #ifndef lint
37 static const char copyright[] =
38 "@(#) Copyright (c) 1990, 1993\n\
39 	The Regents of the University of California.  All rights reserved.\n";
40 #endif /* not lint */
41 
42 #ifndef lint
43 static char sccsid[] = "@(#)clri.c	8.2 (Berkeley) 9/23/93";
44 #endif /* not lint */
45 #endif
46 
47 #include <sys/cdefs.h>
48 __FBSDID("$FreeBSD$");
49 
50 #include <sys/param.h>
51 #include <sys/disklabel.h>
52 
53 #include <ufs/ufs/dinode.h>
54 #include <ufs/ffs/fs.h>
55 
56 #include <err.h>
57 #include <errno.h>
58 #include <fcntl.h>
59 #include <libufs.h>
60 #include <stdlib.h>
61 #include <string.h>
62 #include <stdio.h>
63 #include <unistd.h>
64 
65 union dinodep {
66 	struct ufs1_dinode *dp1;
67 	struct ufs2_dinode *dp2;
68 };
69 
70 static void
71 usage(void)
72 {
73 	(void)fprintf(stderr, "usage: clri special_device inode_number ...\n");
74 	exit(1);
75 }
76 
77 int
78 main(int argc, char *argv[])
79 {
80 	union dinodep dp;
81 	struct uufsd disk;
82 	long generation;
83 	int inonum, exitval;
84 	char *fsname;
85 
86 	if (argc < 3)
87 		usage();
88 
89 	/* get the superblock. */
90 	fsname = *++argv;
91 	if (ufs_disk_fillout(&disk, fsname) == -1) {
92 		printf("loading superblock: %s\n", disk.d_error);
93 		exit (1);
94 	}
95 
96 	/* remaining arguments are inode numbers. */
97 	exitval = 0;
98 	while (*++argv) {
99 		/* get the inode number. */
100 		if ((inonum = atoi(*argv)) < UFS_ROOTINO) {
101 			printf("%s is not a valid inode number", *argv);
102 			exitval = 1;
103 			continue;
104 		}
105 		(void)printf("clearing %d\n", inonum);
106 
107 		if (getino(&disk, (void **)&dp, inonum, NULL) == -1) {
108 			printf("getino: %s\n", disk.d_error);
109 			exitval = 1;
110 			continue;
111 		}
112 		/* clear the inode, and bump the generation count. */
113 		if (disk.d_fs.fs_magic == FS_UFS1_MAGIC) {
114 			generation = dp.dp1->di_gen + 1;
115 			memset(dp.dp1, 0, sizeof(*dp.dp1));
116 			dp.dp1->di_gen = generation;
117 		} else {
118 			generation = dp.dp2->di_gen + 1;
119 			memset(dp.dp2, 0, sizeof(*dp.dp2));
120 			dp.dp2->di_gen = generation;
121 		}
122 		putino(&disk);
123 		(void)fsync(disk.d_fd);
124 	}
125 	(void)ufs_disk_close(&disk);
126 	exit(exitval);
127 }
128