5868747254
BDEification process of dd(1). Most of the changes are from BDE's archive.
Support for negative offsets is gone again, but the case where you
lseek() onto byte -1 of something from a negative offset using seek/skip
is fixed; if you end up on -1, you won't get a false positive lseek failure.
The biggest changes are to data types (more size_t, for instance) and
argument parsing. skip/seek on /dev/{,k}mem now occurs (instead of "read
until you reach the offset") due to mem devices now being D_DISK. Some
const things are now correctly declared as such, and the "case table"
building is better. The only thing that seems to be left to make dd(1)
everything TOG wants it to be is l10n.
100 lines
3.8 KiB
C
100 lines
3.8 KiB
C
/*-
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* Copyright (c) 1991, 1993, 1994
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* The Regents of the University of California. All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* Keith Muller of the University of California, San Diego and Lance
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* Visser of Convex Computer Corporation.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)dd.h 8.3 (Berkeley) 4/2/94
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* $FreeBSD$
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*/
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/* Input/output stream state. */
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typedef struct {
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u_char *db; /* buffer address */
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u_char *dbp; /* current buffer I/O address */
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size_t dbcnt; /* current buffer byte count */
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size_t dbrcnt; /* last read byte count */
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size_t dbsz; /* buffer size */
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#define ISCHR 0x01 /* character device (warn on short) */
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#define ISPIPE 0x02 /* pipe (not truncatable) */
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#define ISTAPE 0x04 /* tape (not seekable) */
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#define ISDISK 0x08 /* disk (valid to seek on) */
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#define NOREAD 0x10 /* not readable */
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u_int flags;
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char *name; /* name */
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int fd; /* file descriptor */
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off_t offset; /* # of blocks to skip */
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u_quad_t f_stats; /* # of full blocks processed */
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u_quad_t p_stats; /* # of partial blocks processed */
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u_quad_t s_stats; /* # of odd swab blocks */
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u_quad_t t_stats; /* # of truncations */
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} IO;
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typedef struct {
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u_quad_t in_full; /* # of full input blocks */
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u_quad_t in_part; /* # of partial input blocks */
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u_quad_t out_full; /* # of full output blocks */
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u_quad_t out_part; /* # of partial output blocks */
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u_quad_t trunc; /* # of truncated records */
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u_quad_t swab; /* # of odd-length swab blocks */
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u_quad_t bytes; /* # of bytes written */
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double start; /* start time of dd */
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} STAT;
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/* Flags (in ddflags). */
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#define C_ASCII 0x00001
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#define C_BLOCK 0x00002
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#define C_BS 0x00004
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#define C_CBS 0x00008
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#define C_COUNT 0x00010
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#define C_EBCDIC 0x00020
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#define C_FILES 0x00040
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#define C_IBS 0x00080
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#define C_IF 0x00100
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#define C_LCASE 0x00200
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#define C_NOERROR 0x00400
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#define C_NOTRUNC 0x00800
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#define C_OBS 0x01000
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#define C_OF 0x02000
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#define C_SEEK 0x04000
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#define C_SKIP 0x08000
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#define C_SWAB 0x10000
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#define C_SYNC 0x20000
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#define C_UCASE 0x40000
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#define C_UNBLOCK 0x80000
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#define C_OSYNC 0x100000
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#define C_SPARSE 0x200000
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