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/*
Licensed under the GNU Public License.
Copyright (C) 1998-2009 by Thomas M. Vier, Jr. All Rights Reserved.
wipe is free software.
See LICENSE for more information.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <unistd.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/ioctl.h>
#include <fcntl.h>
#include "config.h"
#ifdef HAVE_LINUX_FS_H
# include <linux/fs.h>
# define LINUX_BLKDEV
#else
# ifdef LINUX
# ifdef HAVE_SYS_MOUNT_H
# include <sys/mount.h>
# define LINUX_BLKDEV
# endif
# endif
#endif
#ifdef HAVE_SYS_DISKLABEL_H
# include <sys/disklabel.h>
# define BSD_BLKDEV
#endif
#ifndef LINUX_BLKDEV
# ifndef BSD_BLKDEV
# define NO_BLKDEV
# endif
#endif
#include "std.h"
#include "io.h"
#include "main.h"
#include "percent.h"
#include "file.h"
#include "wipe.h"
#include "blkdev.h"
extern int exit_code;
extern char *argvzero;
extern struct opt_s options;
private int wipe_blkdev(struct file_s *f);
private int zero_blkdev(struct file_s *f);
/*
wipe_blkdev -- runs the wipe passes on a block device
*/
private int wipe_blkdev(struct file_s *f)
{
if (options.zero || options.custom) return zero_blkdev(f);
fsetbuf(f);
if (fgetbuf(f) == FAILED)
return FAILED;
percent_init(&f->percent, f->name, f->bufsize, f->loop);
/**** run the passes ****/
if (wipe_passes(f))
{
fprintf(stderr, "\r%s: failed to wipe `%s'\n", argvzero, f->name);
ffreebuf(f);
return FAILED;
}
percent_done(&f->percent);
ffreebuf(f);
return 0;
}
/*
zero_blkdev -- zeroes out a block device
*/
private int zero_blkdev(struct file_s *f)
{
fsetbuf(f);
if (fgetbuf(f) == FAILED)
{
fprintf(stderr, "\r%s: failed to wipe `%s'\n", argvzero, f->name);
return FAILED;
}
percent_init(&f->percent, f->name, f->bufsize, f->loop);
if (write_pass(f, options.custom_byte))
{
fprintf(stderr, "\r%s: failed to wipe `%s'\n", argvzero, f->name);
ffreebuf(f);
return FAILED;
}
percent_done(&f->percent);
ffreebuf(f);
return 0;
}
/*
destroy_blkdev -- destroy the device's data
calls subroutines wipeblkdev() and zero()
*/
public int destroy_blkdev(struct file_s *f)
{
int code;
#ifdef BSD_BLKDEV
struct partinfo pinfo;
#endif
#ifdef NO_BLKDEV
fprintf(stderr, "\r%s: block device support not available\n", argvzero);
return FAILED;
#endif
#ifdef SANITY
if (!S_ISBLK(f->st.st_mode))
{
fprintf(stderr, "\r%s: destroy_blkdev(): not a block dev: %s\n",
argvzero, f->name);
abort();
}
if (strncmp(f->name, f->real_name, PATH_MAX) != 0)
{
fprintf(stderr, "\r%s: destroyblkdev(): f->name != f->real_name\n",
argvzero);
abort();
}
#endif
if ((f->fd = open(f->real_name, O_WRONLY | O_NOFOLLOW | SYNC)) < 0)
{
fprintf(stderr, "\r%s: cannot open `%s':%s\n",
argvzero, f->name, strerror(errno));
exit_code = errno; return FAILED;
}
#ifdef BSD_BLKDEV
if (ioctl(f->fd, DIOCGPART, &pinfo))
{
fprintf(stderr, "\r%s: ioctl failed, can't get disklabel for `%s': %s\n",
argvzero, f->name, strerror(errno));
exit_code = errno; return FAILED;
}
#endif
if (options.sectors == 0)
{
#ifdef LINUX_BLKDEV
int tmp;
if (ioctl(f->fd, BLKGETSIZE, &tmp))
{
fprintf(stderr, "\r%s: ioctl failed, can't get sector count for `%s': %s\n",
argvzero, f->name, strerror(errno));
exit_code = errno; return FAILED;
}
options.sectors = tmp;
#endif
#ifdef BSD_BLKDEV
options.sectors = pinfo.part->p_size;
#endif
}
if (options.sector_size == 0)
{
#ifdef BSD_BLKDEV
options.sector_size = pinfo.disklab->d_secsize;
#else
options.sector_size = SECTOR_SIZE;
#endif
}
f->fsize = (options.sectors) * options.sector_size;
if (f->fsize == 0)
{
fprintf(stderr, "\r%s: `%s' is zero length\n",
argvzero, f->name);
return FAILED;
}
#ifdef DEBUG
fprintf(stderr, "\rzeroblkdev: f->fsize == %ld\n", f->fsize);
#endif
code = wipe_blkdev(f); /**** wipe block device ****/
close(f->fd);
return code;
}
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