1/*- 2 * SPDX-License-Identifier: BSD-3-Clause 3 * 4 * Copyright (c) 1991, 1993, 1994 5 * The Regents of the University of California. All rights reserved. 6 * 7 * This code is derived from software contributed to Berkeley by 8 * Keith Muller of the University of California, San Diego and Lance 9 * Visser of Convex Computer Corporation. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 3. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 */ 35 36/* Input/output stream state. */ 37typedef struct { 38 u_char *db; /* buffer address */ 39 u_char *dbp; /* current buffer I/O address */ 40 ssize_t dbcnt; /* current buffer byte count */ 41 ssize_t dbrcnt; /* last read byte count */ 42 ssize_t dbsz; /* block size */ 43 44#define ISCHR 0x01 /* character device (warn on short) */ 45#define ISPIPE 0x02 /* pipe-like (see position.c) */ 46#define ISTAPE 0x04 /* tape */ 47#define ISSEEK 0x08 /* valid to seek on */ 48#define NOREAD 0x10 /* not readable */ 49#define ISTRUNC 0x20 /* valid to ftruncate() */ 50 u_int flags; 51 52 const char *name; /* name */ 53 int fd; /* file descriptor */ 54 off_t offset; /* # of blocks to skip */ 55 off_t seek_offset; /* offset of last seek past output hole */ 56} IO; 57 58typedef struct { 59 uintmax_t in_full; /* # of full input blocks */ 60 uintmax_t in_part; /* # of partial input blocks */ 61 uintmax_t out_full; /* # of full output blocks */ 62 uintmax_t out_part; /* # of partial output blocks */ 63 uintmax_t trunc; /* # of truncated records */ 64 uintmax_t swab; /* # of odd-length swab blocks */ 65 uintmax_t bytes; /* # of bytes written */ 66 struct timespec start; /* start time of dd */ 67} STAT; 68 69/* Flags (in ddflags). */ 70#define C_ASCII 0x0000000000000001ULL 71#define C_BLOCK 0x0000000000000002ULL 72#define C_BS 0x0000000000000004ULL 73#define C_CBS 0x0000000000000008ULL 74#define C_COUNT 0x0000000000000010ULL 75#define C_EBCDIC 0x0000000000000020ULL 76#define C_FILES 0x0000000000000040ULL 77#define C_IBS 0x0000000000000080ULL 78#define C_IF 0x0000000000000100ULL 79#define C_LCASE 0x0000000000000200ULL 80#define C_NOERROR 0x0000000000000400ULL 81#define C_NOTRUNC 0x0000000000000800ULL 82#define C_OBS 0x0000000000001000ULL 83#define C_OF 0x0000000000002000ULL 84#define C_OSYNC 0x0000000000004000ULL 85#define C_PAREVEN 0x0000000000008000ULL 86#define C_PARNONE 0x0000000000010000ULL 87#define C_PARODD 0x0000000000020000ULL 88#define C_PARSET 0x0000000000040000ULL 89#define C_SEEK 0x0000000000080000ULL 90#define C_SKIP 0x0000000000100000ULL 91#define C_SPARSE 0x0000000000200000ULL 92#define C_SWAB 0x0000000000400000ULL 93#define C_SYNC 0x0000000000800000ULL 94#define C_UCASE 0x0000000001000000ULL 95#define C_UNBLOCK 0x0000000002000000ULL 96#define C_FILL 0x0000000004000000ULL 97#define C_STATUS 0x0000000008000000ULL 98#define C_NOXFER 0x0000000010000000ULL 99#define C_NOINFO 0x0000000020000000ULL 100#define C_PROGRESS 0x0000000040000000ULL 101#define C_FSYNC 0x0000000080000000ULL 102#define C_FDATASYNC 0x0000000100000000ULL 103#define C_OFSYNC 0x0000000200000000ULL 104#define C_IFULLBLOCK 0x0000000400000000ULL 105#define C_IDIRECT 0x0000000800000000ULL 106#define C_ODIRECT 0x0000001000000000ULL 107 108#define C_PARITY (C_PAREVEN | C_PARODD | C_PARNONE | C_PARSET) 109 110#define BISZERO(p, s) ((s) > 0 && *((const char *)p) == 0 && !memcmp( \ 111 (const void *)(p), (const void *) \ 112 ((const char *)p + 1), (s) - 1)) 113