dt.h

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/****************************************************************************
 *									    *
 *			  COPYRIGHT (c) 1990 - 2004			    *
 *			   This Software Provided			    *
 *				     By					    *
 *			  Robin's Nest Software Inc.			    *
 *									    *
 * Permission to use, copy, modify, distribute and sell this software and   *
 * its documentation for any purpose and without fee is hereby granted,	    *
 * provided that the above copyright notice appear in all copies and that   *
 * both that copyright notice and this permission notice appear in the	    *
 * supporting documentation, and that the name of the author not be used    *
 * in advertising or publicity pertaining to distribution of the software   *
 * without specific, written prior permission.				    *
 *									    *
 * THE AUTHOR DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, 	    *
 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN	    *
 * NO EVENT SHALL HE BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL   *
 * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR    *
 * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS  *
 * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF   *
 * THIS SOFTWARE.							    *
 *									    *
 ****************************************************************************/
/*
 * Modification History:
 *
 * September 27th, 2003 by Robin Miller.
 *      Added support for AIX.
 *
 * March 14th, 2003 by Robin Miller.
 *	Add declarations for slice and prefix variables.
 *
 * November 14th, 2002 by Robin Miller.
 *	Add support for 32-bit HP-UX compilation.
 *
 * February 23rd, 2002 by Robin Miller.
 *	Make porting changes for HP-UX IA64.
 *
 * February 1st, 2002 by Robin Miller.
 *	Make porting changes necessary for Solaris 8.
 *
 * August 31st, 2001 by Robin Miller.
 *	Increase size of di_capacity from 32 to 64 bits in preparation
 * for larger capacity volumes, esp. logical volumes on array controllers.
 *
 * January 24th, 2001 by Robin Miller.
 *	For Windows/NT, use /dev/[n]rmt instead of "tapeN" for tape
 * device names, since this is the name used when tapes are mounted
 * using the Cygnus toolkit.
 *
 * January 14th, 2001 by Robin Miller.
 *	Added support for multiple volumes option.
 *
 * January 11th, 2001 by Robin Miller.
 *	Modify conditionals so Windows tape devices are /dev/rmtN
 * and /dev/nrmtN (norewind)  which the latest Cygnus README states.
 *
 * December 30th, 2000 by Robin Miller.
 *	Make changes to build using MKS/NuTCracker product.
 *
 * April 17th, 2000 by Robin Miller.
 *	Added device path failure flag, to force re-open of tapes
 * on Wave4 clusters which forces alternate paths or servers to be
 * located by CAM or DRD.
 *
 * January 22nd, 2000 by Robin Miller.
 *	Added support for Cygwin tape devices for Windows/NT.
 *
 * August 6th, 1999 by Robin Miller.
 *      Better parameterizing of "long long" printf formatting.
 *
 * July 29, 1999 by Robin Miller.
 *	Merge in changes made to compile on FreeBSD.
 *
 * July 22nd, 1999 by Robin Miller.
 *	Added support for IOT (DJ's) test pattern.
 * 
 * May 27, 1999 by Robin Miller.
 *	Added support for micro-second delays.
 *
 * April 8, 1999 by Robin Miller.
 *	Merge in Jeff Detjen's changes for table()/sysinfo timing.
 *
 * December 21, 1998 by Robin Miller.
 *	For DUNIX, changes to handle tape resets.
 *
 * April 29, 1998 by Robin Miller.
 *	Add support for an alternate device directory, e.g. "/devices/",
 * as a prefix to physical device names.  Just checking for "/dev...",
 * described below, is too general and sure to get me into trouble.
 *
 * April 25, 1998 by Robin Miller.
 *	Change device prefix to account for "/dev" or "/devices" (steel),
 * since this knowledge is used to determine if a device should exist
 * (to avoid creating files in the /dev directory), as well as whether
 * the PID is appended during multiple process testing.
 *
 * February 28, 1996 by Robin Miller.
 *	Added support for copying and verifying device/files.
 *
 * December 19, 1995 by Robin Miller
 *      Conditionalize for Linux Operating System.
 *
 * September 23, 1994 by Robin Miller.
 *      Make changes necessary to build on QNX 4.21 release.
 *
 * September 5, 1992 by Robin Miller.
 *	Initial port to QNX 4.1 Operating System.
 */
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <fcntl.h>
#include <termios.h>
#include <time.h> 				/* CLK_TCK defined here */
#include <unistd.h>
#include <math.h>
#include <errno.h>
#include <sys/types.h>
#include <sys/times.h>
#include <sys/stat.h>

#if defined(__QNXNTO__)
#include <unix.h>
#endif

/*
 * These are found in <tzfile.h> on Tru64 UNIX and Solaris.
 */
#define SECS_PER_MIN	60
#define MINS_PER_HOUR	60
#define HOURS_PER_DAY	24
#define SECS_PER_HOUR	(SECS_PER_MIN * MINS_PER_HOUR)
#define SECS_PER_DAY	(SECS_PER_HOUR * HOURS_PER_DAY)

#if defined(DEC)
#  include <sys/table.h>
#endif /* defined(DEC) */

#if defined(EEI)
#  include <sys/mtio.h>
#endif /* defined(EEI) */

#if defined(MUNSA)
#  include <assert.h>
#  include <sys/dlm.h>
dlm_lock_mode_t    munsa_lock;
#endif /* defined(MUNSA) */

#if !defined(HZ)
#  if defined(sun) || defined(__WIN32__) || defined(SCO) || defined(HP_UX)
#    include <sys/param.h>
#  endif /* defined(sun) */
#  if defined(CLK_TCK) && !defined(HZ)
#    define HZ		CLK_TCK
#  else
#    if !defined(HZ)
#      define HZ		256
#    endif /* !defined(HZ) */
#    if !defined(CLK_TCK)
#      define CLK_TCK	HZ
#    endif /* !defined(CLK_TCK) */
#  endif /* defined(CLK_TCK) */
#endif /* !defined(HZ) */

#if defined(DEC)
#  define LOG_DIAG_INFO	1
#endif /* defined(DEC) */

#if defined(__alpha) || defined(__LP64__)
#  define MACHINE_64BITS
#endif /* defined(__alpha) */

/*
 * Macro to calculate block count from byte count (rounds up).
 * [ these are usually found in sys/param.h on DUNIX ]
 */
#if !defined(howmany)
#  define howmany(x, y)   (((x)+((y)-1))/(y))
#endif /* !defined(howmany) */
#if !defined(roundup)
#  define roundup(x, y)   ((((x)+((y)-1))/(y))*(y))
#endif /* !defined(roundup) */
#if !defined(rounddown)
#  define rounddown(x,y)  (((x)/(y))*(y))
#endif /* !defined(rounddown) */

/*
 * Macros for fast min/max.
 */
#if !defined(MIN)
#  define MIN(a,b) (((a)<(b))?(a):(b))
#endif /* !defined(MIN) */
#if !defined(MAX)
#  define MAX(a,b) (((a)>(b))?(a):(b))
#endif /* if !defined(MAX) */

/*
 * Macro to calculate the starting block of where error occured.
 *    ( 'x' = byte count or file offset, 'y' = block size )
 */
#define WhichBlock(x,y)		((x)/(y))

#if defined(__CYGWIN__) && defined(__STRICT_ANSI__)
int     _EXFUN(fileno, (FILE *));
#endif

/*
 * Large value for 32 or 64 bit systems.
 *
 * Note: Most systems are now defined quad_t or u_quad_t for
 *	 "long long" values, but I've chosen to avoid conflicts
 *	 by defining my own typedef's (for now :-).  The other
 *	 reason for my own definitions is to avoid the following:
 *
 *	 typedef struct  _quad { int val[2]; } quad;
 *
 *	 used by some systems that don't support "long long" :-)
 *
 */
#if defined(MACHINE_64BITS)

#define QuadIsLong
typedef unsigned long		large_t;
typedef signed long		slarge_t;
typedef volatile large_t	v_large;
typedef volatile slarge_t	v_slarge;
#define LUF	"%lu"
#define LDF	"%ld"
#define LXF	"%#lx"
#define FUF	LUF
#define FXF	LXF

#elif defined(__GNUC__) && defined(_BSD_SOURCE) || defined(SCO) || defined(__QNXNTO__) || defined(SOLARIS) || defined(HP_UX) || defined(AIX) || defined(_NT_SOURCE)

#define QuadIsLongLong
typedef unsigned long long int	large_t;
typedef signed long long int	slarge_t;
typedef volatile large_t	v_large;
typedef volatile slarge_t	v_slarge;
#if defined(__QNXNTO__) || defined(SOLARIS) || defined(HP_UX) || defined(AIX)
#  define LUF   "%llu"
#  define LDF   "%lld"
#  define LXF   "%#llx"
#elif defined(SCO)
#  define LUF	"%Lu"
#  define LDF	"%Ld"
#  define LXF	"%#Lx"
#else /* !defined(SCO) && !defined(__QNXNTO__) && !defined(HP_UX) && !defined(AIX) */
#  define LUF	"%qu"
#  define LDF	"%qd"
#  define LXF	"%#qx"
#endif /* defined(__QNXNTO__) */

#if defined(_FILE_OFFSET_BITS) && (_FILE_OFFSET_BITS == 64)
#  define FUF	LUF
#  define FXF	LXF
#else /* !defined(_FILE_OFFSET_BITS) || (_FILE_OFFSET_BITS != 64) */
#  define FUF	"%lu"
#  define FXF	"%#lx"
#endif /* defined(_FILE_OFFSET_BITS) && (_FILE_OFFSET_BITS == 64) */

#elif defined(__NUTC__)

#define QuadIsLongLong

typedef u_quad_t		large_t;
typedef quad_t			slarge_t;
typedef volatile large_t	v_large;
typedef volatile slarge_t	v_slarge;
#define LUF	"%qu"
#define LDF	"%qd"
#define LXF	"%#qx"
#define FUF	"%lu"
#define FXF	"%#lx"

#else /* !defined(MACHINE_64BITS) && !defined(__GNUC__) */

#define QuadIsDouble
typedef double			large_t;
typedef double			slarge_t;
typedef volatile large_t	v_large;
typedef volatile slarge_t	v_slarge;

#define LUF	"%.0f"
#define LDF	"%.0f"
#define LXF	"%.0f"	/* ??? no hex ??? */
#define FUF	"%lu"
#define FXF	"%#lx"

#endif /* defined(MACHINE_64BITS) */

/*
 * Create some shorthands for volatile storage classes:
 */
typedef	volatile char	v_char;
typedef	volatile short	v_short;
typedef	volatile int	v_int;
typedef volatile long	v_long;
#if !defined(DEC)
/* These are defined in sys/types.h on DEC Alpha systems. */
typedef	volatile unsigned char	vu_char;
typedef	volatile unsigned short	vu_short;
typedef	volatile unsigned int	vu_int;
typedef volatile unsigned long	vu_long;
#endif /* !defined(__alpha) */

#define SUCCESS		0			/* Success status code. */
#define FAILURE		-1			/* Failure status code. */
#define WARNING		1			/* Warning status code.	*/
#define TRUE		1			/* Boolean TRUE value.	*/
#define FALSE		0			/* Boolean FALSE value.	*/
#define UNINITIALIZED	255			/* Uninitialized flag.	*/
#define NO_LBA		0xFFFFFFFF		/* No LBA vlaue.	*/

#define BLOCK_SIZE		512		/* Bytes in block.	*/
#define KBYTE_SIZE		1024		/* Kilobytes value.	*/
#define MBYTE_SIZE		1048576L	/* Megabytes value.	*/
#define GBYTE_SIZE		1073741824L	/* Gigabytes value.	*/

/*
 * These buffer sizes are mainly for allocating stack space
 * for pre-formatting strings to display.  Different sizes
 * to prevent wasting stack space (my preference).
 */
#define SMALL_BUFFER_SIZE       32              /* Small buffer size.   */
#define MEDIUM_BUFFER_SIZE      64              /* Medium buffer size.  */
#define LARGE_BUFFER_SIZE       128             /* Large buffer size.   */
#define STRING_BUFFER_SIZE	256		/* String buffer size.	*/

#define MAX_PROCS	256			/* Maximum processes.	*/
#define MAX_SLICES	256			/* Maximum slices.	*/

#define USE_PATTERN_BUFFER			/* Use pattern buffer.	*/

#undef INFINITY
#if defined(MACHINE_64BITS)
#  define MAX_SEEK	0x8000000000000000UL /* Maximum lseek() value.	*/
#  define MAX_LONG	0x7fffffffffffffffL  /* Maximum positive long.	*/
#  define MAX_ULONG	0xffffffffffffffffUL /* Maximum u_long value.	*/
#  define INFINITY	MAX_ULONG	/* Maximum possible long value.	*/
#  define DEFAULT_PATTERN 0x39c39c39U	/* Default data pattern.	*/
#  define ASCII_PATTERN	  0x41424344U	/* Default ASCII data pattern.	*/
#  define TBYTE_SIZE	1099511627776L		/* Terabytes value.	*/
#else /* !defined(MACHINE_64BITS */
#  define MAX_LONG	0x7fffffffL	/* Maximum positive long value.	*/
#  define MAX_ULONG	0xffffffffUL	/* Maximum unsigned long value.	*/
#  if defined(_FILE_OFFSET_BITS) && (_FILE_OFFSET_BITS == 64)
#    define MAX_SEEK	0x8000000000000000ULL /* Maximum lseek() value. */
#  else /* if !defined(_FILE_OFFSET_BITS) || (_FILE_OFFSET_BITS != 64) */
#    define MAX_SEEK	0x80000000UL	/* Maximum lseek() value.	*/
#  endif /* defined(_FILE_OFFSET_BITS) && (_FILE_OFFSET_BITS == 64) */
#  if defined(QuadIsLongLong)
#    if defined(__NUTC__)
#      define MAX_ULONG_LONG 0xffffffffffffffffui64
#      define INFINITY	 MAX_ULONG_LONG	/* Maximum possible large value */
#      define TBYTE_SIZE 1099511627776i64       /* Terabytes value.	*/
#    else 
#      define MAX_ULONG_LONG 0xffffffffffffffffULL
#      define INFINITY	 MAX_ULONG_LONG	/* Maximum possible large value */
#      define TBYTE_SIZE 1099511627776LL	/* Terabytes value.	*/
#    endif /* defined(__NUTC__) */
#  else /* assume QuadIsDouble */
#    if defined(__WIN32__)
       /* HUGE_VAL seems to be defined as 0.0, which is NFG! */
#      define INFINITY  (double)0x10000000000000L /* Max large value???	*/
#    else
#      define INFINITY	HUGE_VAL	/* Maximum possible large value */
#    endif
#    define TBYTE_SIZE	((double)GBYTE_SIZE*1024) /* Terabytes value.	*/
#  endif /* defined(QuadIsLongLong) */
#  define DEFAULT_PATTERN 0x39c39c39UL	/* Default data pattern.	*/
#  define ASCII_PATTERN	  0x41424344UL	/* Default ASCII data pattern.	*/
#endif /* defined(MACHINE_64BITS) */

/*
 * Shorthand macros for string compare functions:
 */
#define EQ(x,y)		(strcmp(x,y)==0)	/* String EQ compare.	*/
#define EQL(x,y,n)	(strncmp(x,y,n)==0)	/* Compare w/length.	*/

#define NE(x,y)		(strcmp(x,y)!=0)	/* String NE compare.	*/
#define NEL(x,y,n)	(strncmp(x,y,n)!=0)	/* Compare w/length.	*/

#define EQS(x,y)	(strstr(x,y) != NULL)	/* Sub-string equal.	*/
#define EQSC(x,y)	(strcasestr(x,y) != NULL) /* Case insensitive.	*/

#define NES(x,y)	(strstr(x,y) == NULL)	/* Sub-string not equal	*/
#define NESC(x,y)	(strcasestr(x,y) == NULL) /* Case insensitive.	*/

/*
 * Define some known device names (for automatic device recognition).
 */
#define DEV_PREFIX	"/dev/"		/* Physical device name prefix.	*/
#define DEV_LEN		5		/* Length of device name prefix.*/
/*
 * Alternate Device Directory:
 */
#if defined(_NT_SOURCE)
#  define ADEV_PREFIX	"//./"		/* Windows hidden device dir.	*/
#  define ADEV_LEN	4		/* Length of device name prefix.*/
#  define NDEV_PREFIX	"\\\\.\\"	/* Native Windows device dir.	*/
#  define NDEV_LEN	4		/* That's for "\\.\" prefix.	*/
#else /* !defined(_NT_SOURCE) */
#  define ADEV_PREFIX	"/devices/"	/* Physical device name prefix.	*/
#  define ADEV_LEN	9		/* Length of device name prefix.*/
#  define NDEV_PREFIX	"/dev/"		/* Native device prefix (dup).	*/
#  define NDEV_LEN	5		/* Native device prefix length.	*/
#endif /* defined(_NT_SOURCE) */

#define CONSOLE_NAME	"console"	/* The console device name.	*/
#define CONSOLE_LEN	7		/* Length of console name.	*/

#if defined(_QNX_SOURCE)
#  define CDROM_NAME	"cd"		/* Start of CD-ROM device name.	*/
#  define RCDROM_NAME	"cd"		/* Start of raw CD-ROM names.	*/
#elif defined(sun) || defined(__linux__)
/* Note: Don't know about Sun systems. */
#  define CDROM_NAME	"cd"		/* Start of CD-ROM device name.	*/
#  define RCDROM_NAME	"scd"		/* Start of raw CD-ROM names.	*/
/* NOTE: Linux (RedHat V6.0) currently has no raw CD-ROM names! */