From 0c60d243711843bef49d39b1cb72373437e02c52 Mon Sep 17 00:00:00 2001 From: "William F. Jolitz" Date: Sat, 29 Jun 1991 22:12:28 -0800 Subject: [PATCH] 386BSD 0.1 development Work on file usr/src/sbin/clri/clri.c Co-Authored-By: Lynne Greer Jolitz Synthesized-from: 386BSD-0.1 --- usr/src/sbin/clri/clri.c | 145 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 145 insertions(+) create mode 100644 usr/src/sbin/clri/clri.c diff --git a/usr/src/sbin/clri/clri.c b/usr/src/sbin/clri/clri.c new file mode 100644 index 0000000000..6caed37a19 --- /dev/null +++ b/usr/src/sbin/clri/clri.c @@ -0,0 +1,145 @@ +/* + * Copyright (c) 1990 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 +char copyright[] = +"@(#) Copyright (c) 1990 The Regents of the University of California.\n\ + All rights reserved.\n"; +#endif /* not lint */ + +#ifndef lint +static char sccsid[] = "@(#)clri.c 5.3 (Berkeley) 6/29/91"; +#endif /* not lint */ + +/* + * clri(8) + */ + +#include +#include +#include +#include +#include +#include +#include +#include + +char *fs; + +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, offset, bsize; + int inonum; + char 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) + error(); + if (lseek(fd, SBLOCK * DEV_BSIZE, SEEK_SET) < 0) + error(); + 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 = itod(sbp, inonum); /* inode to fs block */ + offset = fsbtodb(sbp, offset); /* fs block to disk block */ + offset *= DEV_BSIZE; /* disk block to disk bytes */ + + /* seek and read the block */ + if (lseek(fd, offset, SEEK_SET) < 0) + error(); + if (read(fd, (char *)ibuf, bsize) != bsize) + error(); + + /* get the inode within the block. */ + ip = &ibuf[itoo(sbp, inonum)]; + + /* clear the inode, and bump the generation count. */ + generation = ip->di_gen + 1; + bzero((char *)ip, sizeof *ip); + ip->di_gen = generation; + + /* backup and write the block */ + if (lseek(fd, -bsize, SEEK_CUR) < 0) + error(); + if (write(fd, (char *)ibuf, bsize) != bsize) + error(); + (void)fsync(fd); + } + (void)close(fd); + exit(0); +} + +error() +{ + (void)fprintf(stderr, "clri: %s: %s\n", fs, strerror(errno)); + exit(1); +} -- 2.20.1