/*      $NetBSD: dd.h,v 1.16 2015/03/18 13:23:49 manu Exp $     */

/*-
 * Copyright (c) 1991, 1993, 1994
 *      The Regents of the University of California.  All rights reserved.
 *
 * This code is derived from software contributed to Berkeley by
 * Keith Muller of the University of California, San Diego and Lance
 * Visser of Convex Computer Corporation.
 *
 * 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. 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.
 *
 *      @(#)dd.h        8.3 (Berkeley) 4/2/94
 */

#include <sys/stat.h>

struct ddfops {
        int (*op_init)(void);

        int (*op_open)(const char *, int, ...);
        int (*op_close)(int);

        int (*op_fcntl)(int, int, ...);
        int (*op_ioctl)(int, unsigned long, ...);

        int (*op_fstat)(int, struct stat *);
        int (*op_fsync)(int);
        int (*op_ftruncate)(int, off_t);

        off_t (*op_lseek)(int, off_t, int);

        ssize_t (*op_read)(int, void *, size_t);
        ssize_t (*op_write)(int, const void *, size_t);
};

#define ddop_open(dir, a1, a2, ...)     dir.ops->op_open(a1, a2, __VA_ARGS__)
#define ddop_close(dir, a1)             dir.ops->op_close(a1)
#define ddop_fcntl(dir, a1, a2, ...)    dir.ops->op_fcntl(a1, a2, __VA_ARGS__)
#define ddop_ioctl(dir, a1, a2, ...)    dir.ops->op_ioctl(a1, a2, __VA_ARGS__)
#define ddop_fsync(dir, a1)             dir.ops->op_fsync(a1)
#define ddop_ftruncate(dir, a1, a2)     dir.ops->op_ftruncate(a1, a2)
#define ddop_lseek(dir, a1, a2, a3)     dir.ops->op_lseek(a1, a2, a3)
#define ddop_read(dir, a1, a2, a3)      dir.ops->op_read(a1, a2, a3)
#define ddop_write(dir, a1, a2, a3)     dir.ops->op_write(a1, a2, a3)

/* Input/output stream state. */
typedef struct {
        u_char          *db;            /* buffer address */
        u_char          *dbp;           /* current buffer I/O address */
        uint64_t        dbcnt;          /* current buffer byte count */
        int64_t         dbrcnt;         /* last read byte count */
        uint64_t        dbsz;           /* buffer size */

#define ISCHR           0x01            /* character device (warn on short) */
#define ISPIPE          0x02            /* pipe (not truncatable) */
#define ISTAPE          0x04            /* tape (not seekable) */
#define NOREAD          0x08            /* not readable */
        u_int           flags;

        const char      *name;          /* name */
        int             fd;             /* file descriptor */
        uint64_t        offset;         /* # of blocks to skip */
        struct ddfops   const *ops;     /* ops to use with fd */
} IO;

typedef struct {
        uint64_t        in_full;        /* # of full input blocks */
        uint64_t        in_part;        /* # of partial input blocks */
        uint64_t        out_full;       /* # of full output blocks */
        uint64_t        out_part;       /* # of partial output blocks */
        uint64_t        trunc;          /* # of truncated records */
        uint64_t        swab;           /* # of odd-length swab blocks */
        uint64_t        sparse;         /* # of sparse output blocks */
        uint64_t        bytes;          /* # of bytes written */
        struct timeval  start;          /* start time of dd */
} STAT;

/* Flags (in ddflags, iflag and oflag). */
#define C_NONE          0x00000
#define C_ASCII         0x00001
#define C_BLOCK         0x00002
#define C_BS            0x00004
#define C_CBS           0x00008
#define C_COUNT         0x00010
#define C_EBCDIC        0x00020
#define C_FILES         0x00040
#define C_IBS           0x00080
#define C_IF            0x00100
#define C_LCASE         0x00200
#define C_NOERROR       0x00400
#define C_NOTRUNC       0x00800
#define C_OBS           0x01000
#define C_OF            0x02000
#define C_SEEK          0x04000
#define C_SKIP          0x08000
#define C_SWAB          0x10000
#define C_SYNC          0x20000
#define C_UCASE         0x40000
#define C_UNBLOCK       0x80000
#define C_OSYNC         0x100000
#define C_SPARSE        0x200000
#define C_IFLAG         0x400000
#define C_OFLAG         0x800000