This is clri.c in view mode; [Download] [Up]
/*
* 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.
*/
/*
* Modified by John L. Chmielewski on Sat Dec 30, 1995
* Hacked code to work under NEXTSTEP/FIP 3.3
* Modified by Mark Salyzyn on Sun Dec 31, 1995 to add some UI.
*/
#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 */
#include <sys/param.h>
#include <sys/time.h>
#ifdef NeXT
#include <sys/vnode.h>
#include <ufs/inode.h>
#include <ufs/fs.h>
#include <dev/disk.h>
/* DEV_BSIZE should not be hardcoded */
#define DEV_BSIZE fsize /* 512 for some >1G drives
1024 othersize */
#define ino_to_fsba itod
#define ino_to_fsbo itoo
#include <architecture/byte_order.h>
/* must redefine header file macros for LITTLE_ENDIAN, BIG_ENDIAN also works */
#undef fsbtodb
#define fsbtodb(fs, b) ((b) << NXSwapBigLongToHost((fs)->fs_fsbtodb))
#undef INOPB
#define INOPB(fs) (NXSwapBigLongToHost((fs)->fs_inopb))
#undef itog
#define itog(fs, x) ((x) / NXSwapBigLongToHost((fs)->fs_ipg))
#undef blkstofrags
#define blkstofrags(fs, blks) /* calculates (blks * fs->fs_frag) */ \
((blks) << NXSwapBigLongToHost((fs)->fs_fragshift))
#undef cgbase
#define cgbase(fs, c) ((daddr_t)(NXSwapBigLongToHost((fs)->fs_fpg) * (c)))
#undef cgstart
#define cgstart(fs, c) \
(cgbase(fs, c) + NXSwapBigLongToHost((fs)->fs_cgoffset) * ((c) \
& ~(NXSwapBigLongToHost((fs)->fs_cgmask))))
#undef cgimin
#define cgimin(fs, c) (cgstart(fs, c) + NXSwapBigLongToHost((fs)->fs_iblkno))
#undef itod
#define itod(fs, x) \
((daddr_t)(cgimin(fs, itog(fs, x)) + \
(blkstofrags((fs), (((x) % NXSwapBigLongToHost((fs)->fs_ipg)) / \
INOPB(fs))))))
#else
#include <ufs/ufs/dinode.h>
#include <ufs/ffs/fs.h>
#include <err.h>
#endif
#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, fsize = 1024;
off_t offset;
int inonum, i, c;
char *fs, sblock[SBSIZE];
char nowrite = 0, noask = 0 ;
while (fs = *++argv) {
if (--argc == 0)
break ;
if (strcmp (fs, "-w") == 0)
nowrite = 1 ;
else if (strcmp (fs, "-y") == 0)
noask = 1 ;
else if (strcmp (fs, "-b") == 0)
fsize = 512 ;
else break ;
}
if ((argc <= 0) || (fs == NULL)) {
usage: (void)fprintf(stderr, "usage: clri [-w] [-y] [-b] filesystem inode ...\n");
exit(1);
}
/* get the superblock. */
if ((fd = open(fs, O_RDWR, 0)) < 0)
err(1, "%s", fs);
#ifndef NeXT
if (lseek(fd, (off_t)(SBLOCK * DEV_BSIZE), SEEK_SET) < 0)
#else
if (lseek(fd, (off_t)(SBLOCK), SEEK_SET) < 0)
#endif
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;
#ifndef NeXT
if (sbp->fs_magic != FS_MAGIC) {
#else
if (NXSwapBigLongToHost(sbp->fs_magic) != FS_MAGIC) {
#endif
(void)fprintf(stderr,
"clri: %s: superblock magic number 0x%x, not 0x%x.\n",
fs, sbp->fs_magic, FS_MAGIC);
exit(1);
}
#ifndef NeXT
bsize = sbp->fs_bsize;
#else
bsize = NXSwapBigLongToHost(sbp->fs_bsize);
#endif
/* 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("%sinode: %d ", nowrite?"":"clearing ", 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. */
#ifndef NeXT
(void)printf("mode: %o nlink: %d uid: %d gid: %d size: %d\n",
ip->di_mode, ip->di_nlink, ip->di_uid,
ip->di_gid, ip->di_size);
generation = ip->di_gen + 1;
#else
(void)printf("mode: %o nlink: %d uid: %d gid: %d size: %d\n",
NXSwapBigShortToHost(ip->di_mode),
NXSwapBigShortToHost(ip->di_nlink),
NXSwapBigShortToHost(ip->di_uid),
NXSwapBigShortToHost(ip->di_gid),
NXSwapBigLongToHost(ip->di_ic.ic_size.val[1]));
generation = NXSwapBigLongToHost(ip->di_gen) + 1;
#endif
memset(ip, 0, sizeof(*ip));
#ifndef NeXT
ip->di_gen = generation;
#else
ip->di_gen = NXSwapHostLongToBig(generation);
#endif
if (nowrite == 0) {
if (noask == 0) {
(void)fprintf (stderr, "Clear? ") ;
again: c = getchar () ;
while (((i = getchar ()) != EOF)
&& (i != '\n') && (i != '\r')) ;
switch (c) {
case 'Y': case 'y':
break ;
case 'N': case 'n':
continue ;
default:
(void)fprintf (stderr, "Yes or No? ") ;
goto again;
}
}
/* 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);
}
#ifdef NeXT
err(a, b, fs)
int a;
char *b;
char *fs;
{
perror(fs);
}
#endif
These are the contents of the former NiCE NeXT User Group NeXTSTEP/OpenStep software archive, currently hosted by Netfuture.ch.