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path: root/support/dktools/dk-eradisk.ctr
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%%	options

copyright owner	=	Dirk Krause
copyright year	=	2015-xxxx
license		=	bsd


%%	module


#include "dk4conf.h"

#include <stdio.h>
#if DK4_HAVE_STDLIB_H
#ifndef STDLIB_H_INCLUDED
#include <stdlib.h>
#define	STDLIB_H_INCLUDED 1
#endif
#endif

#if DK4_HAVE_IO_H
#ifndef IO_H_INCLUDED
#include <io.h>
#define IO_H_INCLUDED 1
#endif
#endif

#if DK4_HAVE_FCNTL_H
#ifndef FCNTL_H_INCLUDED
#include <fcntl.h>
#define FCNTL_H_INCLUDED 1
#endif
#endif

#if DK4_HAVE_STRING_H
#ifndef STRING_H_INCLUDED
#include <string.h>
#define	STRING_H_INCLUDED 1
#endif
#endif

#if DK4_HAVE_ERRNO_H
#ifndef ERRNO_H_INCLUDED
#include <errno.h>
#define	ERRNO_H_INCLUDED 1
#endif
#endif

#if DK4_HAVE_UNISTD_H
#ifndef UNISTD_H_INCLUDED
#include <unistd.h>
#define	UNISTD_H_INCLUDED 1
#endif
#endif

#if DK4_HAVE_SYS_TYPES_H
#ifndef SYS_TYPES_H_INCLUDED
#include <sys/types.h>
#define SYS_TYPES_H_INCLUDED 1
#endif
#endif

#if DK4_HAVE_SIGNAL_H
#ifndef SIGNAL_H_INCLUDED
#include <signal.h>
#define SIGNAL_H_INCLUDED 1
#endif
#endif

#if DK4_HAVE_PROCESS_H
#ifndef PROCESS_H_INCLUDED
#include <process.h>
#define	PROCESS_H_INCLUDED 1
#endif
#endif

#include "dk4types.h"
#include "dk4const.h"
#include "dk4vers.h"
#include "dk4app.h"
#include "dk4aopt.h"
#include "dk4mem.h"
#include "dk4numco.h"
#include "dk4fdwre.h"



$!trace-include



/**	Constant texts used by program, not localized.
*/
static const dkChar * const	dk_eradisk_kwnl[] = {
$!string-table	macro=dkT
#
#	0	Program group name
#
dktools
#
#	1	Help text file name
#
dk-eradisk.txt
#
#	2	String table file
#
dk-eradisk.str
$!end
};



/**	Constant texts used by program, replaced by localized texts
	if available.
*/
static const dkChar * const     dk_eradisk_kw_def[] = {
$!string-table	macro=dkT
#
#	0	Error message: Failed to set up signal handlers!
#
Failed to set up signal handlers!
#
#	1	Error message: Failed to restore signal handlers!
#
Failed to restore signal handlers!
#
#	2	Error message: Signal SIGPIPE received
#
Aborted by SIGPIPE signal!
#
#	3	Error message: Signal SIGINT received!
#
Aborted by SIGINT signal!
#
#	4	Error message: Aborted by SIGTERM signal!
#
Aborted by SIGTERM signal!
#
#	5	Error message: Block size too large.
#
Block size too large!
#
#	6	Error message: Pass number out of range!
#
Pass number out of range!
#
#	7	Error message: Block size must not be 0!
#
Block size must not be 0!
$!end
};



/**	Default text, used if help text file is not found.
*/
static const dkChar * const	dk_eradisk_help_text[] = {
$!text	macro=dkT,preprocessor

NAME

  dk-eradisk - Generate patterns to erase disk before retiring it

SYNOPSIS

  dk-eradisk [<options>]

DESCRIPTION

The program generates a data stream to erase a disk.
Before retiring a disk or handing a disk over to another user one
should remove all contents.
The output from dk-eradisk can be used as input for the ``dd'' program
to savely clean a disk.

OPTIONS

-p <number>, --pass=<number>
	Pass number. Pass 0 (should be used as last pass)
	can be used to write 0 bytes, so operating systems recognize
	the disk as new from manufacturer.
	The pass number chooses the bit pattern, one from 0x00, 0xFF,
	0x0F, 0xF0, 0x33, 0xCC, 0x55, or 0xAA.
	When doing multiple passes, start with the highest pass number,
	use pass number 0 for the final pass.

-b <size>, --blocksize=<size>
	Block size (default: 4096).
	The default is suitable for traditional hard disks.
	For flash memory (i.e. SSD) you should increase the value to 1m.

-c <size>, --count=<size>
	Number of blocks to write.
	The default 0 creates an endless sequence of blocks
	until the program is finished by signal.

EXIT STATUS

0 on success, all other exit status codes indicate an error.

AUTHOR

Dirk Krause

COPYRIGHT AND LICENSE

Run
  dk-eradisk --license
to see license information.

SEE ALSO

http://dktools.sourceforge.net

$!end
};



/**	License conditions.
*/
static const dkChar * const	dk_eradisk_license_text[] = {
$!text	macro=dkT,preprocessor
This software uses code from the following projects, either directly or as
a library:

dktools		Dirk Krause's tools and libraries.
		See http://dktools.sourceforge.net/ for more information.
#if DK4_HAVE_ZLIB_H

zlib		Data compression library.
		See http://www.zlib.net/ for more information.
#endif
#if DK4_HAVE_BZLIB_H

bzip2		Data compression program and library.
		See http://www.bzip.org/ for more information.
#endif

All the licenses below apply to the program.
Licenses for used libraries are shown as found on my Scientific Linux 6.x
computer in the /usr/share/doc directory on 2015-04-01. Check the project
homepages of the used libraries for additional information and/or updated
license terms.


DK tools and libraries license
==============================
Copyright (c) 2015-2016, Dirk Krause
All rights reserved.

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:

* Redistributions of source code must retain the above copyright notice,
  this list of conditions and the following disclaimer.
* 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.
* Neither the name of the Dirk Krause nor the names of contributors may be
  used to endorse or promote products derived from this software without
  specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 COPYRIGHT OWNER 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.
#if DK4_HAVE_ZLIB_H


Zlib license
============
(C) 1995-2004 Jean-loup Gailly and Mark Adler

This software is provided 'as-is', without any express or implied
warranty.  In no event will the authors be held liable for any damages
arising from the use of this software.

Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:

1. The origin of this software must not be misrepresented; you must not
   claim that you wrote the original software. If you use this software
   in a product, an acknowledgment in the product documentation would be
   appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
   misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.

Jean-loup Gailly        Mark Adler
jloup@gzip.org          madler@alumni.caltech.edu
#endif
#if DK4_HAVE_BZLIB_H


Bzip2 and libbzip2 library license
==================================
This program, "bzip2", the associated library "libbzip2", and all
documentation, are copyright (C) 1996-2007 Julian R Seward.  All
rights reserved.

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. The origin of this software must not be misrepresented; you must 
   not claim that you wrote the original software.  If you use this 
   software in a product, an acknowledgment in the product 
   documentation would be appreciated but is not required.

3. Altered source versions must be plainly marked as such, and must
   not be misrepresented as being the original software.

4. The name of the author may not be used to endorse or promote 
   products derived from this software without specific prior written 
   permission.

THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.

Julian Seward, jseward@bzip.org
bzip2/libbzip2 version 1.0.5 of 10 December 2007
#endif

$!end
};



/**	Options used by program.
*/
static const dk4_option_specification_t	dk_eradisk_options[] = {

  /*	Flag: Line end consists of carriage return and newline.
  */
  { dkT('p'),	dkT("pass"),			DK4_OPT_ARG_INT },

  /*	Show line numbers.
  */
  { dkT('b'),	dkT("blocksize"),		DK4_OPT_ARG_SIZE },

  /*	Number of digits for line numbers.
  */
  { dkT('c'),	dkT("count"),			DK4_OPT_ARG_SIZE }
};

/**	Number of elements in the dk_cat_options array.
*/
static const size_t dk_eradisk_sz_options =
sizeof(dk_eradisk_options)/sizeof(dk4_option_specification_t);



/**	Application structure.
*/
static dk4_app_t	*app	=	NULL;



/**	Localized texts used by the program.
*/
static const dkChar * const	*msg	=	dk_eradisk_kw_def;

/**	Number of elements in dk_blks_msg array.
*/
static size_t	sz_msg =
sizeof(dk_eradisk_kw_def)/sizeof(DK4_PCDKCHAR) - 1;



/**	Number of blocks (0 for unlimited).
*/
static size_t	count	=	0;



/**	Block size.
*/
static size_t	blks	=	4096;



/**	Pass number.
*/
static int	passno	=	0;



/**	Small static buffer.
*/
static char	default_buffer[4096];



/**	A buffer is allocated dynamically if the size is larger
	than default_buffer size.
*/
static char	*allocated_buffer	=	NULL;



/**	The buffer used by the program.
*/
static char	*buffer			=	NULL;



/**	Exit status code.
*/
static int exval	=	EXIT_FAILURE;



#ifdef SIGPIPE
/**	Indicator: SIGPIPE signal received.
*/
static
DK4_VOLATILE
dk4_sig_atomic_t	sig_had_pipe	=	0;
#endif

/**	Indicator: SIGINT signal received.
*/
static
DK4_VOLATILE
dk4_sig_atomic_t	sig_had_int	=	0;

/**	Indicator: SIGTERM signal received.
*/
static
DK4_VOLATILE
dk4_sig_atomic_t	sig_had_term	=	0;



/**	Pass a volatile pointer to an atomic integer.
	This function is necessary as some compilers mis-optimize
	direct access to volatile variables (at least if you believe
	one of the coding standards).
	@param	ptr	Address of atomic integer variable.
	@return	The unmodified pointer.
*/
static
DK4_VOLATILE
dk4_sig_atomic_t *
sig_pass_pointer(DK4_VOLATILE dk4_sig_atomic_t *ptr)
{
  return ptr;
}



#ifdef SIGPIPE
/**	Handler for SIGPIPE signal.
	@param	signo	Signal number (always SIGPIPE, ignored).
*/
static
void
sig_handler_pipe(int signo)
{
  *sig_pass_pointer(&sig_had_pipe) = 1;
}
#endif

/**	Handler for SIGINT signal.
	@param	signo	Signal number (always SIGINT, ignored).
*/
static
void
sig_handler_int(int signo)
{
  *sig_pass_pointer(&sig_had_int) = 1;
}

/**	Handler for SIGTERM signal.
	@param	signo	Signal number (always SIGTERM, ignored).
*/
static
void
sig_handler_term(int signo)
{
  *sig_pass_pointer(&sig_had_term) = 1;
}



/**	Read value from volatile atomic type.
	This function is necessary as some compilers mis-optimize
	direct access to volatile variables (at least if you believe
	one of the coding standards).
	@param	ap	Pointer to volatile atomic variable.
	@return	Contents of the variable.
*/
static
dk4_sig_atomic_t
sig_read_atomic(DK4_VOLATILE dk4_sig_atomic_t *ap)
{
  return (*ap);
}

/**	Check whether we can continue or if a signal was received.
	@param	check_pipe	Flag: Check for occured SIGPIPE signal too.
	@return	1 if the program can continue, 0 if a signal was received.
*/
static
int
sig_can_continue(int check_pipe)
{
  int		back = 1;
#ifdef SIGPIPE
  if (0 != check_pipe) {
    if (0 != sig_read_atomic(&sig_had_pipe)) { back = 0; }
  }
#endif
  if (0 != sig_read_atomic(&sig_had_int )) { back = 0; }
  if (0 != sig_read_atomic(&sig_had_term)) { back = 0; }
  return back;
}



static
void
dk_eradisk_memset(char *ptr, size_t sz, char patbyte)
{
#if DK4_HAVE_MEMSET
  memset((void *)ptr, (int)patbyte, sz);
#else
  while(sz--) { *(ptr++) = patbyte; }
#endif
}



static
void
produce_output(void)
{
  size_t	nb;
#if DK4_ON_WINDOWS
  int		oldmode;
  int		wres;
#else
  ssize_t	wres;
#endif
  int		cc;
  char		patbyte;

  /*	Check whether to use static or dynamic buffer, allocate
  	buffer if necessary.
  */
  if (sizeof(default_buffer) >= blks) {
    buffer = default_buffer;
  } else {
    allocated_buffer = dk4mem_malloc_bytes(blks, NULL);
    if (NULL != allocated_buffer) {
      buffer = allocated_buffer;
    } else {
      /* ERROR: Failed to obtain memory */
      dk4app_log_base1(app, DK4_LL_ERROR, 90);
    }
  }

  if (NULL != buffer) {
#if VERSION_BEFORE_20150821
    cc = 1;
#endif
    nb = 0;
    exval = EXIT_SUCCESS;
    /*	Set buffer to pattern depending on pass number.
    */
    switch (passno) {
      case 7 : { patbyte = 0xAA; } break;
      case 6 : { patbyte = 0x55; } break;
      case 5 : { patbyte = 0xCC; } break;
      case 4 : { patbyte = 0x33; } break;
      case 3 : { patbyte = 0xF0; } break;
      case 2 : { patbyte = 0x0F; } break;
      case 1 : { patbyte = 0xFF; } break;
      default: { patbyte = 0x00; } break;
    }
    dk_eradisk_memset(buffer, blks, patbyte);
    /*	Write output buffer.
    */
    cc = sig_can_continue(1);
#if DK4_ON_WINDOWS
    oldmode = _setmode(1, _O_BINARY);
    if ((dk4_um_t)UINT_MAX < blks) {
      /* ERROR: Block size too large! */
      dk4app_log_1(app, msg, sz_msg, DK4_LL_ERROR, 5);
      cc = -1;
    }
#else
    if ((dk4_um_t)(SIZE_MAX / 2) < blks) {
      /* ERROR: Block size too large! */
      dk4app_log_1(app, msg, sz_msg, DK4_LL_ERROR, 5);
      cc = -1;
    }
#endif
    while(1 == cc) {
      errno = 0;
#if DK4_ON_WINDOWS
      wres = _write(1, buffer, (unsigned)blks);
#else
      wres = write(1, buffer, blks);
#endif
      if (-1 == wres) {
        cc = -1;
	dk4fd_write_error_msg(app, NULL, errno);
      }
      if (1 != sig_can_continue(1)) {
        if (1 == cc) { cc = -1; }
      }
      if (0 < count) {
        if (++nb >= count) {
	  if (1 == cc) { cc = 0; }
	}
      }
    }
#if DK4_ON_WINDOWS
    _setmode(1, oldmode);
#endif
  }

  /*	Release buffer if dynamically allocated.
  */
  if (NULL != allocated_buffer) {
    dk4mem_free(allocated_buffer);
  }
}



#if DK4_HAVE_SIGACTION
/**	Set signal handlers and run.
*/
static
void
run_with_signals(void)
{
#ifdef SIGPIPE
  struct sigaction opipe;
#endif
  struct sigaction oint;
#ifdef SIGPIPE
  struct sigaction npipe;
#endif
  struct sigaction nint;
  struct sigaction oterm;
  struct sigaction nterm;
  int	 success = 0;

#ifdef SIGPIPE
  /*	Set up signal handling for SIGPIPE.
  */
  DK4_MEMRES(&npipe, sizeof(npipe));
  npipe.sa_handler = sig_handler_pipe;
  npipe.sa_flags = 0;
  if (0 != sigemptyset(&npipe.sa_mask)) {
    /* ERROR: Failed to set up masked signal set for SIGPIPE */
    dk4app_log_1(app, msg, sz_msg, DK4_LL_ERROR, 0);
    goto finished;
  }
  if (0 != sigaddset(&npipe.sa_mask, SIGPIPE)) {
    /* ERROR: Failed to set up masked signal set for SIGPIPE */
    dk4app_log_1(app, msg, sz_msg, DK4_LL_ERROR, 0);
    goto finished;
  }
  if (0 != sigaction(SIGPIPE, &npipe, &opipe)) {
    /* ERROR: Failed to set up signal handler for SIGPIPE */
    dk4app_log_1(app, msg, sz_msg, DK4_LL_ERROR, 0);
    goto finished;
  }
#endif

  /*	Set up signal handling for SIGINT.
  */
  DK4_MEMRES(&nint, sizeof(nint));
  nint.sa_handler = sig_handler_int;
  nint.sa_flags = 0;
  if (0 != sigemptyset(&nint.sa_mask)) {
    /* ERROR: Failed to set up masked signal set for SIGINT */
    dk4app_log_1(app, msg, sz_msg, DK4_LL_ERROR, 0);
    goto restore_old_pipe;
  }
  if (0 != sigaddset(&nint.sa_mask, SIGINT)) {
    /* ERROR: Failed to set up masked signal set for SIGINT */
    dk4app_log_1(app, msg, sz_msg, DK4_LL_ERROR, 0);
    goto restore_old_pipe;
  }
  if (0 != sigaction(SIGINT, &nint, &oint)) {
    /* ERROR: Failed to set up signal handler for SIGINT */
    dk4app_log_1(app, msg, sz_msg, DK4_LL_ERROR, 0);
    goto restore_old_pipe;
  }

  /*	Set up signal handling for SIGTERM
  */
  DK4_MEMRES(&nterm, sizeof(nterm));
  nterm.sa_handler = sig_handler_term;
  nterm.sa_flags = 0;
  if (0 != sigemptyset(&nterm.sa_mask)) {
    /* ERROR: Failed to set up masked signal set for SIGTERM */
    dk4app_log_1(app, msg, sz_msg, DK4_LL_ERROR, 0);
    goto restore_old_int;
  }
  if (0 != sigaddset(&nterm.sa_mask, SIGTERM)) {
    /* ERROR: Failed to set up masked signal set for SIGTERM */
    dk4app_log_1(app, msg, sz_msg, DK4_LL_ERROR, 0);
    goto restore_old_int;
  }
  if (0 != sigaction(SIGTERM, &nterm, &oterm)) {
    /* ERROR: Failed to set up signal handler for SIGTERM */
    dk4app_log_1(app, msg, sz_msg, DK4_LL_ERROR, 0);
    goto restore_old_int;
  }

  success = 1;
  produce_output();

  /*	Restore signal handling for SIGTERM.
  */
  if (0 != sigaction(SIGTERM, &oterm, NULL)) {
    /* ERROR: Failed to restore old SIGTERM settings */
    dk4app_log_1(app, msg, sz_msg, DK4_LL_ERROR, 1);
    success = 0;
  }

  /*	Restore signal handling for SIGINT.
  */
  restore_old_int:
  if (0 != sigaction(SIGINT, &oint, NULL)) {
    /* ERROR: Failed to restore old SIGPIPE settings */
    dk4app_log_1(app, msg, sz_msg, DK4_LL_ERROR, 1);
    success = 0;
  }

#ifdef SIGPIPE
  /*	Restore signal handling for SIGPIPE.
  */
  restore_old_pipe:
  if (0 != sigaction(SIGPIPE, &opipe, NULL)) {
    /* ERROR: Failed to restore old SIGPIPE settings */
    dk4app_log_1(app, msg, sz_msg, DK4_LL_ERROR, 1);
    success = 0;
  }
#endif

  /*	Set exit status code if error occured.
  */
  finished:
  if (0 == success) { exval = EXIT_FAILURE; }
}
#else
#if DK4_HAVE_SIGSET
/**	Set signal handlers and run.
*/
static
void
run_with_signals(void)
{
#ifdef SIGPIPE
  dk4_sig_handler_t	*oldpipe = NULL;
#endif
  dk4_sig_handler_t	*oldint  = NULL;
  dk4_sig_handler_t	*oldterm = NULL;

#ifdef SIGPIPE
  oldpipe = sigset(SIGPIPE, sig_handler_pipe);
#endif
  oldint  = sigset(SIGINT,  sig_handler_int);
  oldterm = sigset(SIGTERM, sig_handler_term);
  produce_output();
  sigset(SIGTERM, oldterm);
  sigset(SIGINT,  oldint);
#ifdef SIGPIPE
  sigset(SIGPIPE, oldpipe);
#endif
}
#else
#if DK4_HAVE_SIGNAL
/**	Set signal handlers and run.
*/
static
void
run_with_signals(void)
{
#ifdef SIGPIPE
  dk4_sig_handler_t	*oldpipe = NULL;
#endif
  dk4_sig_handler_t	*oldint  = NULL;
  dk4_sig_handler_t	*oldterm = NULL;
#ifdef SIGPIPE
  oldpipe = signal(SIGPIPE, sig_handler_pipe);
#endif
  oldint  = signal(SIGINT,  sig_handler_int);
  oldterm = signal(SIGTERM, sig_handler_term);
  produce_output();
  signal(SIGTERM, oldterm);
  signal(SIGINT,  oldint);
#ifdef SIGPIPE
  signal(SIGPIPE, oldpipe);
#endif
}
#else
/**	Set signal handlers and run.
*/
static
void
run_with_signals(void)
{
  produce_output();
}
#endif
#endif
#endif




/**	Main function.
	@param	argc	Number of command line arguments.
	@param	argv	Command line arguments array.
	@return	0 on success, all other values indicate errors.
*/
#if DK4_CHAR_SIZE > 1
int wmain(int argc, wchar_t *argv[])
#else
int main(int argc, char *argv[])
#endif
{
  dk4_im_t	i;
  size_t	sz;
  $!trace-init	dk-eradisk.deb
  $? "+ main"

  app = dk4app_open_cmd(
    argc, argv, dk_eradisk_options, dk_eradisk_sz_options,
    dk_eradisk_kwnl[0], DKT_VERSION_DK,
    dk_eradisk_kwnl[1], dk_eradisk_help_text, dk_eradisk_license_text
  );
  if (NULL != app) {
    sz_msg =    dk4app_string_table_size(dk_eradisk_kw_def);
    msg =       dk4app_string_table(app, dk_eradisk_kwnl[2], dk_eradisk_kw_def);
    if (0 != dk4app_can_run_normally(app)) {
      if (0 != dk4app_opt_is_set_short(app, dkT('p'), NULL)) {
        if (0 != dk4app_opt_get_int_short(&i, app, dkT('p'), NULL)) {
	  if ((INT_MIN <= i) && (INT_MAX >= i)) {
	    passno = (int)i;
	  } else {
	    /* ERROR: Out of range */
	    dk4app_log_1(app, msg, sz_msg, DK4_LL_ERROR, 6);
	    if (0 < i) { passno = INT_MAX; }
	    else       { passno = INT_MIN; }
	  }
	}
      }
      if (0 != dk4app_opt_is_set_short(app, dkT('b'), NULL)) {
        if (0 != dk4app_opt_get_size_short(&sz, app, dkT('b'), NULL)) {
	  if (0 < sz) {
	    blks = sz;
	  } else {
	    /* ERROR: Out of range */
	    dk4app_log_1(app, msg, sz_msg, DK4_LL_ERROR, 7);
	  }
	}
      }
      if (0 != dk4app_opt_is_set_short(app, dkT('c'), NULL)) {
        if (0 != dk4app_opt_get_size_short(&sz, app, dkT('c'), NULL)) {
	  count = sz;
	}
      }
      run_with_signals();
#ifdef SIGPIPE
      if ((0 < count) && (0 != sig_read_atomic(&sig_had_pipe))) {
        dk4app_log_1(app, msg, sz_msg, DK4_LL_ERROR, 2);
        exval = EXIT_FAILURE;
      }
#endif
      if ((0 < count) && (0 != sig_read_atomic(&sig_had_int))) {
        dk4app_log_1(app, msg, sz_msg, DK4_LL_ERROR, 3);
	exval = EXIT_FAILURE;
      }
      if (0 != sig_read_atomic(&sig_had_term)) {
        dk4app_log_1(app, msg, sz_msg, DK4_LL_ERROR, 4);
	exval = EXIT_FAILURE;
      }
    } else {
      if (0 != dk4app_help_version_license(app)) {
        exval = EXIT_SUCCESS;
      }
    }
    dk4app_close(app);
  }
  $? "- main %d", exval
  $!trace-end
  exit(exval); return exval;
}