Initial revision

1 files changed, 142 insertions, 0 deletions

diff --git a/ufs-utils/clri.c b/ufs-utils/clri.c
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+/*
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Rich $alz of BBN Inc.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef lint
+static char copyright[] =
+"@(#) Copyright (c) 1990, 1993\n\
+	The Regents of the University of California.  All rights reserved.\n";
+#endif /* not lint */
+
+#ifndef lint
+static char sccsid[] = "@(#)clri.c	8.2 (Berkeley) 9/23/93";
+#endif /* not lint */
+
+/* Modified by Michael I. Bushnell for GNU Hurd. */
+
+#include <sys/param.h>
+#include <sys/time.h>
+
+#include <ufs/ufs/dinode.h>
+#include <ufs/ffs/fs.h>
+
+#include <err.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <stdlib.h>
+#include <string.h>
+#include <stdio.h>
+#include <unistd.h>
+
+int
+main(argc, argv)
+	int argc;
+	char *argv[];
+{
+	register struct fs *sbp;
+	register struct dinode *ip;
+	register int fd;
+	struct dinode ibuf[MAXBSIZE / sizeof (struct dinode)];
+	long generation, bsize;
+	off_t offset;
+	int inonum;
+	char *fs, sblock[SBSIZE];
+
+	if (argc < 3) {
+		(void)fprintf(stderr, "usage: clri filesystem inode ...\n");
+		exit(1);
+	}
+
+	fs = *++argv;
+
+	/* get the superblock. */
+	if ((fd = open(fs, O_RDWR, 0)) < 0)
+		err(1, "%s", fs);
+	if (lseek(fd, (off_t)(SBLOCK * DEV_BSIZE), SEEK_SET) < 0)
+		err(1, "%s", fs);
+	if (read(fd, sblock, sizeof(sblock)) != sizeof(sblock)) {
+		(void)fprintf(stderr,
+		    "clri: %s: can't read the superblock.\n", fs);
+		exit(1);
+	}
+
+	sbp = (struct fs *)sblock;
+	if (sbp->fs_magic != FS_MAGIC) {
+		(void)fprintf(stderr,
+		    "clri: %s: superblock magic number 0x%x, not 0x%x.\n",
+		    fs, sbp->fs_magic, FS_MAGIC);
+		exit(1);
+	}
+	bsize = sbp->fs_bsize;
+
+	/* remaining arguments are inode numbers. */
+	while (*++argv) {
+		/* get the inode number. */
+		if ((inonum = atoi(*argv)) <= 0) {
+			(void)fprintf(stderr,
+			    "clri: %s is not a valid inode number.\n", *argv);
+			exit(1);
+		}
+		(void)printf("clearing %d\n", inonum);
+
+		/* read in the appropriate block. */
+		offset = ino_to_fsba(sbp, inonum);	/* inode to fs blk */
+		offset = fsbtodb(sbp, offset);		/* fs blk disk blk */
+		offset *= DEV_BSIZE;			/* disk blk to bytes */
+
+		/* seek and read the block */
+		if (lseek(fd, offset, SEEK_SET) < 0)
+			err(1, "%s", fs);
+		if (read(fd, ibuf, bsize) != bsize)
+			err(1, "%s", fs);
+
+		/* get the inode within the block. */
+		ip = &ibuf[ino_to_fsbo(sbp, inonum)];
+
+		/* clear the inode, and bump the generation count. */
+		generation = ip->di_gen + 1;
+		memset(ip, 0, sizeof(*ip));
+		ip->di_gen = generation;
+
+		/* backup and write the block */
+		if (lseek(fd, (off_t)-bsize, SEEK_CUR) < 0)
+			err(1, "%s", fs);
+		if (write(fd, ibuf, bsize) != bsize)
+			err(1, "%s", fs);
+		(void)fsync(fd);
+	}
+	(void)close(fd);
+	exit(0);
+}