37c4e1235f
consistent with other rump clients. Copying between kernels is
done using the host pipe, e.g.:
dd if=foo rof=bar skip=1 seek=1 => dd if=foo skip=1 | rump.dd of=bar seek=1
Also, the pipe idiom extends to copying between different rump
kernels, e.g.:
env RUMP_SERVER=unix://srv1 rump.dd if=thefile \
| env RUMP_SERVER=unix://srv2 rump.dd of=thefile
Pipe approach suggested by yamt (thanks!)
124 lines
4.5 KiB
C
124 lines
4.5 KiB
C
/* $NetBSD: dd.h,v 1.15 2011/02/04 19:42:12 pooka Exp $ */
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/*-
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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. 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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*/
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#include <sys/stat.h>
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struct ddfops {
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int (*op_init)(void);
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int (*op_open)(const char *, int, ...);
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int (*op_close)(int);
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int (*op_fcntl)(int, int, ...);
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int (*op_ioctl)(int, unsigned long, ...);
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int (*op_fstat)(int, struct stat *);
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int (*op_fsync)(int);
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int (*op_ftruncate)(int, off_t);
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off_t (*op_lseek)(int, off_t, int);
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ssize_t (*op_read)(int, void *, size_t);
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ssize_t (*op_write)(int, const void *, size_t);
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};
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#define ddop_open(dir, a1, a2, ...) dir.ops->op_open(a1, a2, __VA_ARGS__)
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#define ddop_close(dir, a1) dir.ops->op_close(a1)
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#define ddop_fcntl(dir, a1, a2, ...) dir.ops->op_fcntl(a1, a2, __VA_ARGS__)
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#define ddop_ioctl(dir, a1, a2, ...) dir.ops->op_ioctl(a1, a2, __VA_ARGS__)
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#define ddop_fsync(dir, a1) dir.ops->op_fsync(a1)
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#define ddop_ftruncate(dir, a1, a2) dir.ops->op_ftruncate(a1, a2)
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#define ddop_lseek(dir, a1, a2, a3) dir.ops->op_lseek(a1, a2, a3)
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#define ddop_read(dir, a1, a2, a3) dir.ops->op_read(a1, a2, a3)
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#define ddop_write(dir, a1, a2, a3) dir.ops->op_write(a1, a2, a3)
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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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uint64_t dbcnt; /* current buffer byte count */
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int64_t dbrcnt; /* last read byte count */
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uint64_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 NOREAD 0x08 /* not readable */
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u_int flags;
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const char *name; /* name */
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int fd; /* file descriptor */
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uint64_t offset; /* # of blocks to skip */
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struct ddfops const *ops; /* ops to use with fd */
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} IO;
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typedef struct {
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uint64_t in_full; /* # of full input blocks */
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uint64_t in_part; /* # of partial input blocks */
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uint64_t out_full; /* # of full output blocks */
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uint64_t out_part; /* # of partial output blocks */
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uint64_t trunc; /* # of truncated records */
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uint64_t swab; /* # of odd-length swab blocks */
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uint64_t sparse; /* # of sparse output blocks */
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uint64_t bytes; /* # of bytes written */
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struct timeval 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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