1359 lines
32 KiB
C
1359 lines
32 KiB
C
|
/* $NetBSD: dd.c,v 1.37 2004/01/17 21:00:16 dbj 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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#include <sys/cdefs.h>
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#ifndef lint
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__COPYRIGHT("@(#) Copyright (c) 1991, 1993, 1994\n\
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The Regents of the University of California. All rights reserved.\n");
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#endif /* not lint */
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#ifndef lint
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#if 0
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static char sccsid[] = "@(#)dd.c 8.5 (Berkeley) 4/2/94";
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#else
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__RCSID("$NetBSD: dd.c,v 1.37 2004/01/17 21:00:16 dbj Exp $");
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#endif
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#endif /* not lint */
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#include <sys/param.h>
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#include <sys/stat.h>
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#include <sys/ioctl.h>
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#include <sys/time.h>
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#include <ctype.h>
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#include <err.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <signal.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include "dd.h"
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#define NO_CONV
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//#include "extern.h"
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void block(void);
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void block_close(void);
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void dd_out(int);
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void def(void);
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void def_close(void);
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void jcl(char **);
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void pos_in(void);
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void pos_out(void);
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void summary(void);
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void summaryx(int);
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void terminate(int);
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void unblock(void);
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void unblock_close(void);
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ssize_t bwrite(int, const void *, size_t);
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extern IO in, out;
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extern STAT st;
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extern void (*cfunc)(void);
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extern uint64_t cpy_cnt;
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extern uint64_t cbsz;
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extern u_int ddflags;
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extern u_int files_cnt;
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extern int progress;
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extern const u_char *ctab;
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extern const u_char a2e_32V[], a2e_POSIX[];
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extern const u_char e2a_32V[], e2a_POSIX[];
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extern const u_char a2ibm_32V[], a2ibm_POSIX[];
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extern u_char casetab[];
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#define MAX(a, b) ((a) > (b) ? (a) : (b))
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static void dd_close(void);
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static void dd_in(void);
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static void getfdtype(IO *);
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static int redup_clean_fd(int);
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static void setup(void);
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IO in, out; /* input/output state */
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STAT st; /* statistics */
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void (*cfunc)(void); /* conversion function */
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uint64_t cpy_cnt; /* # of blocks to copy */
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static off_t pending = 0; /* pending seek if sparse */
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u_int ddflags; /* conversion options */
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uint64_t cbsz; /* conversion block size */
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u_int files_cnt = 1; /* # of files to copy */
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int progress = 0; /* display sign of life */
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const u_char *ctab; /* conversion table */
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sigset_t infoset; /* a set blocking SIGINFO */
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int
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dd_main(int argc, char *argv[])
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{
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int ch;
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while ((ch = getopt(argc, argv, "")) != -1) {
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switch (ch) {
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default:
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fprintf(stderr, "usage: dd [operand ...]\n");
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exit(1);
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/* NOTREACHED */
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}
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}
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argc -= (optind - 1);
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argv += (optind - 1);
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jcl(argv);
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setup();
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// (void)signal(SIGINFO, summaryx);
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(void)signal(SIGINT, terminate);
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(void)sigemptyset(&infoset);
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// (void)sigaddset(&infoset, SIGINFO);
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(void)atexit(summary);
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while (files_cnt--)
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dd_in();
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dd_close();
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exit(0);
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/* NOTREACHED */
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||
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}
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static void
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setup(void)
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{
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if (in.name == NULL) {
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in.name = "stdin";
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in.fd = STDIN_FILENO;
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|
} else {
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in.fd = open(in.name, O_RDONLY, 0);
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if (in.fd < 0) {
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fprintf(stderr, "%s: cannot open for read: %s\n",
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in.name, strerror(errno));
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exit(1);
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/* NOTREACHED */
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}
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/* Ensure in.fd is outside the stdio descriptor range */
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in.fd = redup_clean_fd(in.fd);
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}
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getfdtype(&in);
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if (files_cnt > 1 && !(in.flags & ISTAPE)) {
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fprintf(stderr,
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"files is not supported for non-tape devices\n");
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||
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exit(1);
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/* NOTREACHED */
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||
|
}
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if (out.name == NULL) {
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/* No way to check for read access here. */
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out.fd = STDOUT_FILENO;
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out.name = "stdout";
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} else {
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#define OFLAGS \
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(O_CREAT | (ddflags & (C_SEEK | C_NOTRUNC) ? 0 : O_TRUNC))
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out.fd = open(out.name, O_RDWR | OFLAGS /*, DEFFILEMODE */);
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/*
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* May not have read access, so try again with write only.
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* Without read we may have a problem if output also does
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* not support seeks.
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*/
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if (out.fd < 0) {
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out.fd = open(out.name, O_WRONLY | OFLAGS /*, DEFFILEMODE */);
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out.flags |= NOREAD;
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}
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if (out.fd < 0) {
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fprintf(stderr, "%s: cannot open for write: %s\n",
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out.name, strerror(errno));
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exit(1);
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/* NOTREACHED */
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||
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}
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/* Ensure out.fd is outside the stdio descriptor range */
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out.fd = redup_clean_fd(out.fd);
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}
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getfdtype(&out);
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/*
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* Allocate space for the input and output buffers. If not doing
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* record oriented I/O, only need a single buffer.
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*/
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if (!(ddflags & (C_BLOCK|C_UNBLOCK))) {
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if ((in.db = malloc(out.dbsz + in.dbsz - 1)) == NULL) {
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exit(1);
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/* NOTREACHED */
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}
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out.db = in.db;
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} else if ((in.db =
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malloc((u_int)(MAX(in.dbsz, cbsz) + cbsz))) == NULL ||
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(out.db = malloc((u_int)(out.dbsz + cbsz))) == NULL) {
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exit(1);
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/* NOTREACHED */
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}
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in.dbp = in.db;
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out.dbp = out.db;
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||
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/* Position the input/output streams. */
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||
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if (in.offset)
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pos_in();
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if (out.offset)
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pos_out();
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/*
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* Truncate the output file; ignore errors because it fails on some
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* kinds of output files, tapes, for example.
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||
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*/
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if ((ddflags & (C_OF | C_SEEK | C_NOTRUNC)) == (C_OF | C_SEEK))
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(void)ftruncate(out.fd, (off_t)out.offset * out.dbsz);
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||
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|
||
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/*
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||
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* If converting case at the same time as another conversion, build a
|
||
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* table that does both at once. If just converting case, use the
|
||
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* built-in tables.
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||
|
*/
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||
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if (ddflags & (C_LCASE|C_UCASE)) {
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||
|
#ifdef NO_CONV
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||
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/* Should not get here, but just in case... */
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fprintf(stderr, "case conv and -DNO_CONV\n");
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||
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exit(1);
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||
|
/* NOTREACHED */
|
||
|
#else /* NO_CONV */
|
||
|
u_int cnt;
|
||
|
|
||
|
if (ddflags & C_ASCII || ddflags & C_EBCDIC) {
|
||
|
if (ddflags & C_LCASE) {
|
||
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for (cnt = 0; cnt < 0377; ++cnt)
|
||
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casetab[cnt] = tolower(ctab[cnt]);
|
||
|
} else {
|
||
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for (cnt = 0; cnt < 0377; ++cnt)
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||
|
casetab[cnt] = toupper(ctab[cnt]);
|
||
|
}
|
||
|
} else {
|
||
|
if (ddflags & C_LCASE) {
|
||
|
for (cnt = 0; cnt < 0377; ++cnt)
|
||
|
casetab[cnt] = tolower(cnt);
|
||
|
} else {
|
||
|
for (cnt = 0; cnt < 0377; ++cnt)
|
||
|
casetab[cnt] = toupper(cnt);
|
||
|
}
|
||
|
}
|
||
|
|
||
|
ctab = casetab;
|
||
|
#endif /* NO_CONV */
|
||
|
}
|
||
|
|
||
|
(void)gettimeofday(&st.start, NULL); /* Statistics timestamp. */
|
||
|
}
|
||
|
|
||
|
static void
|
||
|
getfdtype(IO *io)
|
||
|
{
|
||
|
// struct mtget mt;
|
||
|
struct stat sb;
|
||
|
|
||
|
if (fstat(io->fd, &sb)) {
|
||
|
fprintf(stderr, "%s: cannot fstat: %s\n",
|
||
|
io->name, strerror(errno));
|
||
|
exit(1);
|
||
|
/* NOTREACHED */
|
||
|
}
|
||
|
if (S_ISCHR(sb.st_mode))
|
||
|
io->flags |= /*ioctl(io->fd, MTIOCGET, &mt) ? ISCHR : ISTAPE; */ ISCHR;
|
||
|
else if (lseek(io->fd, (off_t)0, SEEK_CUR) == -1 && errno == ESPIPE)
|
||
|
io->flags |= ISPIPE; /* XXX fixed in 4.4BSD */
|
||
|
}
|
||
|
|
||
|
/*
|
||
|
* Move the parameter file descriptor to a descriptor that is outside the
|
||
|
* stdio descriptor range, if necessary. This is required to avoid
|
||
|
* accidentally outputting completion or error messages into the
|
||
|
* output file that were intended for the tty.
|
||
|
*/
|
||
|
static int
|
||
|
redup_clean_fd(int fd)
|
||
|
{
|
||
|
int newfd;
|
||
|
|
||
|
if (fd != STDIN_FILENO && fd != STDOUT_FILENO &&
|
||
|
fd != STDERR_FILENO)
|
||
|
/* File descriptor is ok, return immediately. */
|
||
|
return fd;
|
||
|
|
||
|
/*
|
||
|
* 3 is the first descriptor greater than STD*_FILENO. Any
|
||
|
* free descriptor valued 3 or above is acceptable...
|
||
|
*/
|
||
|
newfd = fcntl(fd, F_DUPFD, 3);
|
||
|
if (newfd < 0) {
|
||
|
fprintf(stderr, "dupfd IO: %s\n", strerror(errno));
|
||
|
exit(1);
|
||
|
/* NOTREACHED */
|
||
|
}
|
||
|
|
||
|
close(fd);
|
||
|
|
||
|
return newfd;
|
||
|
}
|
||
|
|
||
|
static void
|
||
|
dd_in(void)
|
||
|
{
|
||
|
int flags;
|
||
|
int64_t n;
|
||
|
|
||
|
for (flags = ddflags;;) {
|
||
|
if (cpy_cnt && (st.in_full + st.in_part) >= cpy_cnt)
|
||
|
return;
|
||
|
|
||
|
/*
|
||
|
* Clear the buffer first if doing "sync" on input.
|
||
|
* If doing block operations use spaces. This will
|
||
|
* affect not only the C_NOERROR case, but also the
|
||
|
* last partial input block which should be padded
|
||
|
* with zero and not garbage.
|
||
|
*/
|
||
|
if (flags & C_SYNC) {
|
||
|
if (flags & (C_BLOCK|C_UNBLOCK))
|
||
|
(void)memset(in.dbp, ' ', in.dbsz);
|
||
|
else
|
||
|
(void)memset(in.dbp, 0, in.dbsz);
|
||
|
}
|
||
|
|
||
|
n = read(in.fd, in.dbp, in.dbsz);
|
||
|
if (n == 0) {
|
||
|
in.dbrcnt = 0;
|
||
|
return;
|
||
|
}
|
||
|
|
||
|
/* Read error. */
|
||
|
if (n < 0) {
|
||
|
|
||
|
/*
|
||
|
* If noerror not specified, die. POSIX requires that
|
||
|
* the warning message be followed by an I/O display.
|
||
|
*/
|
||
|
fprintf(stderr, "%s: read error: %s\n",
|
||
|
in.name, strerror(errno));
|
||
|
if (!(flags & C_NOERROR)) {
|
||
|
exit(1);
|
||
|
/* NOTREACHED */
|
||
|
}
|
||
|
summary();
|
||
|
|
||
|
/*
|
||
|
* If it's not a tape drive or a pipe, seek past the
|
||
|
* error. If your OS doesn't do the right thing for
|
||
|
* raw disks this section should be modified to re-read
|
||
|
* in sector size chunks.
|
||
|
*/
|
||
|
if (!(in.flags & (ISPIPE|ISTAPE)) &&
|
||
|
lseek(in.fd, (off_t)in.dbsz, SEEK_CUR))
|
||
|
fprintf(stderr, "%s: seek error: %s\n",
|
||
|
in.name, strerror(errno));
|
||
|
|
||
|
/* If sync not specified, omit block and continue. */
|
||
|
if (!(ddflags & C_SYNC))
|
||
|
continue;
|
||
|
|
||
|
/* Read errors count as full blocks. */
|
||
|
in.dbcnt += in.dbrcnt = in.dbsz;
|
||
|
++st.in_full;
|
||
|
|
||
|
/* Handle full input blocks. */
|
||
|
} else if (n == in.dbsz) {
|
||
|
in.dbcnt += in.dbrcnt = n;
|
||
|
++st.in_full;
|
||
|
|
||
|
/* Handle partial input blocks. */
|
||
|
} else {
|
||
|
/* If sync, use the entire block. */
|
||
|
if (ddflags & C_SYNC)
|
||
|
in.dbcnt += in.dbrcnt = in.dbsz;
|
||
|
else
|
||
|
in.dbcnt += in.dbrcnt = n;
|
||
|
++st.in_part;
|
||
|
}
|
||
|
|
||
|
/*
|
||
|
* POSIX states that if bs is set and no other conversions
|
||
|
* than noerror, notrunc or sync are specified, the block
|
||
|
* is output without buffering as it is read.
|
||
|
*/
|
||
|
if (ddflags & C_BS) {
|
||
|
out.dbcnt = in.dbcnt;
|
||
|
dd_out(1);
|
||
|
in.dbcnt = 0;
|
||
|
continue;
|
||
|
}
|
||
|
|
||
|
/* if (ddflags & C_SWAB) {
|
||
|
if ((n = in.dbrcnt) & 1) {
|
||
|
++st.swab;
|
||
|
--n;
|
||
|
}
|
||
|
swab(in.dbp, in.dbp, n);
|
||
|
}
|
||
|
*/
|
||
|
in.dbp += in.dbrcnt;
|
||
|
(*cfunc)();
|
||
|
}
|
||
|
}
|
||
|
|
||
|
/*
|
||
|
* Cleanup any remaining I/O and flush output. If necesssary, output file
|
||
|
* is truncated.
|
||
|
*/
|
||
|
static void
|
||
|
dd_close(void)
|
||
|
{
|
||
|
|
||
|
if (cfunc == def)
|
||
|
def_close();
|
||
|
else if (cfunc == block)
|
||
|
block_close();
|
||
|
else if (cfunc == unblock)
|
||
|
unblock_close();
|
||
|
if (ddflags & C_OSYNC && out.dbcnt < out.dbsz) {
|
||
|
(void)memset(out.dbp, 0, out.dbsz - out.dbcnt);
|
||
|
out.dbcnt = out.dbsz;
|
||
|
}
|
||
|
/* If there are pending sparse blocks, make sure
|
||
|
* to write out the final block un-sparse
|
||
|
*/
|
||
|
if ((out.dbcnt == 0) && pending) {
|
||
|
memset(out.db, 0, out.dbsz);
|
||
|
out.dbcnt = out.dbsz;
|
||
|
out.dbp = out.db + out.dbcnt;
|
||
|
pending -= out.dbsz;
|
||
|
}
|
||
|
if (out.dbcnt)
|
||
|
dd_out(1);
|
||
|
|
||
|
/*
|
||
|
* Reporting nfs write error may be defered until next
|
||
|
* write(2) or close(2) system call. So, we need to do an
|
||
|
* extra check. If an output is stdout, the file structure
|
||
|
* may be shared among with other processes and close(2) just
|
||
|
* decreases the reference count.
|
||
|
*/
|
||
|
if (out.fd == STDOUT_FILENO && fsync(out.fd) == -1 && errno != EINVAL) {
|
||
|
fprintf(stderr, "fsync stdout: %s\n", strerror(errno));
|
||
|
exit(1);
|
||
|
/* NOTREACHED */
|
||
|
}
|
||
|
if (close(out.fd) == -1) {
|
||
|
fprintf(stderr, "close: %s\n", strerror(errno));
|
||
|
exit(1);
|
||
|
/* NOTREACHED */
|
||
|
}
|
||
|
}
|
||
|
|
||
|
void
|
||
|
dd_out(int force)
|
||
|
{
|
||
|
static int warned;
|
||
|
int64_t cnt, n, nw;
|
||
|
u_char *outp;
|
||
|
|
||
|
/*
|
||
|
* Write one or more blocks out. The common case is writing a full
|
||
|
* output block in a single write; increment the full block stats.
|
||
|
* Otherwise, we're into partial block writes. If a partial write,
|
||
|
* and it's a character device, just warn. If a tape device, quit.
|
||
|
*
|
||
|
* The partial writes represent two cases. 1: Where the input block
|
||
|
* was less than expected so the output block was less than expected.
|
||
|
* 2: Where the input block was the right size but we were forced to
|
||
|
* write the block in multiple chunks. The original versions of dd(1)
|
||
|
* never wrote a block in more than a single write, so the latter case
|
||
|
* never happened.
|
||
|
*
|
||
|
* One special case is if we're forced to do the write -- in that case
|
||
|
* we play games with the buffer size, and it's usually a partial write.
|
||
|
*/
|
||
|
outp = out.db;
|
||
|
for (n = force ? out.dbcnt : out.dbsz;; n = out.dbsz) {
|
||
|
for (cnt = n;; cnt -= nw) {
|
||
|
|
||
|
if (!force && ddflags & C_SPARSE) {
|
||
|
int sparse, i;
|
||
|
sparse = 1; /* Is buffer sparse? */
|
||
|
for (i = 0; i < cnt; i++)
|
||
|
if (outp[i] != 0) {
|
||
|
sparse = 0;
|
||
|
break;
|
||
|
}
|
||
|
if (sparse) {
|
||
|
pending += cnt;
|
||
|
outp += cnt;
|
||
|
nw = 0;
|
||
|
break;
|
||
|
}
|
||
|
}
|
||
|
if (pending != 0) {
|
||
|
if (lseek(out.fd, pending, SEEK_CUR) ==
|
||
|
-1) {
|
||
|
fprintf(stderr,
|
||
|
"%s: seek error creating "
|
||
|
"sparse file: %s\n",
|
||
|
out.name, strerror(errno));
|
||
|
exit(1);
|
||
|
}
|
||
|
}
|
||
|
nw = bwrite(out.fd, outp, cnt);
|
||
|
if (nw <= 0) {
|
||
|
if (nw == 0) {
|
||
|
fprintf(stderr, "%s: end of device\n",
|
||
|
out.name);
|
||
|
exit(1);
|
||
|
/* NOTREACHED */
|
||
|
}
|
||
|
if (errno != EINTR) {
|
||
|
fprintf(stderr, "%s: write error: %s\n",
|
||
|
out.name, strerror(errno));
|
||
|
/* NOTREACHED */
|
||
|
exit(1);
|
||
|
}
|
||
|
nw = 0;
|
||
|
}
|
||
|
if (pending) {
|
||
|
st.bytes += pending;
|
||
|
st.sparse += pending/out.dbsz;
|
||
|
st.out_full += pending/out.dbsz;
|
||
|
pending = 0;
|
||
|
}
|
||
|
outp += nw;
|
||
|
st.bytes += nw;
|
||
|
if (nw == n) {
|
||
|
if (n != out.dbsz)
|
||
|
++st.out_part;
|
||
|
else
|
||
|
++st.out_full;
|
||
|
break;
|
||
|
}
|
||
|
++st.out_part;
|
||
|
if (nw == cnt)
|
||
|
break;
|
||
|
if (out.flags & ISCHR && !warned) {
|
||
|
warned = 1;
|
||
|
fprintf(stderr, "%s: short write on character "
|
||
|
"device\n", out.name);
|
||
|
}
|
||
|
if (out.flags & ISTAPE) {
|
||
|
fprintf(stderr,
|
||
|
"%s: short write on tape device",
|
||
|
out.name);
|
||
|
exit(1);
|
||
|
/* NOTREACHED */
|
||
|
}
|
||
|
}
|
||
|
if ((out.dbcnt -= n) < out.dbsz)
|
||
|
break;
|
||
|
}
|
||
|
|
||
|
/* Reassemble the output block. */
|
||
|
if (out.dbcnt)
|
||
|
(void)memmove(out.db, out.dbp - out.dbcnt, out.dbcnt);
|
||
|
out.dbp = out.db + out.dbcnt;
|
||
|
|
||
|
if (progress)
|
||
|
(void)write(STDERR_FILENO, ".", 1);
|
||
|
}
|
||
|
|
||
|
/*
|
||
|
* A protected against SIGINFO write
|
||
|
*/
|
||
|
ssize_t
|
||
|
bwrite(int fd, const void *buf, size_t len)
|
||
|
{
|
||
|
sigset_t oset;
|
||
|
ssize_t rv;
|
||
|
int oerrno;
|
||
|
|
||
|
(void)sigprocmask(SIG_BLOCK, &infoset, &oset);
|
||
|
rv = write(fd, buf, len);
|
||
|
oerrno = errno;
|
||
|
(void)sigprocmask(SIG_SETMASK, &oset, NULL);
|
||
|
errno = oerrno;
|
||
|
return (rv);
|
||
|
}
|
||
|
|
||
|
/*
|
||
|
* Position input/output data streams before starting the copy. Device type
|
||
|
* dependent. Seekable devices use lseek, and the rest position by reading.
|
||
|
* Seeking past the end of file can cause null blocks to be written to the
|
||
|
* output.
|
||
|
*/
|
||
|
void
|
||
|
pos_in(void)
|
||
|
{
|
||
|
int bcnt, cnt, nr, warned;
|
||
|
|
||
|
/* If not a pipe or tape device, try to seek on it. */
|
||
|
if (!(in.flags & (ISPIPE|ISTAPE))) {
|
||
|
if (lseek(in.fd,
|
||
|
(off_t)in.offset * (off_t)in.dbsz, SEEK_CUR) == -1) {
|
||
|
fprintf(stderr, "%s: seek error: %s",
|
||
|
in.name, strerror(errno));
|
||
|
exit(1);
|
||
|
/* NOTREACHED */
|
||
|
}
|
||
|
return;
|
||
|
/* NOTREACHED */
|
||
|
}
|
||
|
|
||
|
/*
|
||
|
* Read the data. If a pipe, read until satisfy the number of bytes
|
||
|
* being skipped. No differentiation for reading complete and partial
|
||
|
* blocks for other devices.
|
||
|
*/
|
||
|
for (bcnt = in.dbsz, cnt = in.offset, warned = 0; cnt;) {
|
||
|
if ((nr = read(in.fd, in.db, bcnt)) > 0) {
|
||
|
if (in.flags & ISPIPE) {
|
||
|
if (!(bcnt -= nr)) {
|
||
|
bcnt = in.dbsz;
|
||
|
--cnt;
|
||
|
}
|
||
|
} else
|
||
|
--cnt;
|
||
|
continue;
|
||
|
}
|
||
|
|
||
|
if (nr == 0) {
|
||
|
if (files_cnt > 1) {
|
||
|
--files_cnt;
|
||
|
continue;
|
||
|
}
|
||
|
fprintf(stderr, "skip reached end of input\n");
|
||
|
exit(1);
|
||
|
/* NOTREACHED */
|
||
|
}
|
||
|
|
||
|
/*
|
||
|
* Input error -- either EOF with no more files, or I/O error.
|
||
|
* If noerror not set die. POSIX requires that the warning
|
||
|
* message be followed by an I/O display.
|
||
|
*/
|
||
|
if (ddflags & C_NOERROR) {
|
||
|
if (!warned) {
|
||
|
|
||
|
fprintf(stderr, "%s: error occurred\n",
|
||
|
in.name);
|
||
|
warned = 1;
|
||
|
summary();
|
||
|
}
|
||
|
continue;
|
||
|
}
|
||
|
fprintf(stderr, "%s: read error: %s", in.name, strerror(errno));
|
||
|
exit(1);
|
||
|
/* NOTREACHED */
|
||
|
}
|
||
|
}
|
||
|
|
||
|
void
|
||
|
pos_out(void)
|
||
|
{
|
||
|
// struct mtop t_op;
|
||
|
int cnt, n;
|
||
|
|
||
|
/*
|
||
|
* If not a tape, try seeking on the file. Seeking on a pipe is
|
||
|
* going to fail, but don't protect the user -- they shouldn't
|
||
|
* have specified the seek operand.
|
||
|
*/
|
||
|
if (!(out.flags & ISTAPE)) {
|
||
|
if (lseek(out.fd,
|
||
|
(off_t)out.offset * (off_t)out.dbsz, SEEK_SET) == -1) {
|
||
|
fprintf(stderr, "%s: seek error: %s\n",
|
||
|
out.name, strerror(errno));
|
||
|
exit(1);
|
||
|
/* NOTREACHED */
|
||
|
}
|
||
|
return;
|
||
|
}
|
||
|
|
||
|
/* If no read access, try using mtio. */
|
||
|
if (out.flags & NOREAD) {
|
||
|
/* t_op.mt_op = MTFSR;
|
||
|
t_op.mt_count = out.offset;
|
||
|
|
||
|
if (ioctl(out.fd, MTIOCTOP, &t_op) < 0)*/
|
||
|
fprintf(stderr, "%s: cannot read", out.name);
|
||
|
exit(1);
|
||
|
/* NOTREACHED */
|
||
|
return;
|
||
|
}
|
||
|
|
||
|
/* Read it. */
|
||
|
for (cnt = 0; cnt < out.offset; ++cnt) {
|
||
|
if ((n = read(out.fd, out.db, out.dbsz)) > 0)
|
||
|
continue;
|
||
|
|
||
|
if (n < 0) {
|
||
|
fprintf(stderr, "%s: cannot position by reading: %s\n",
|
||
|
out.name, strerror(errno));
|
||
|
exit(1);
|
||
|
/* NOTREACHED */
|
||
|
}
|
||
|
|
||
|
/*
|
||
|
* If reach EOF, fill with NUL characters; first, back up over
|
||
|
* the EOF mark. Note, cnt has not yet been incremented, so
|
||
|
* the EOF read does not count as a seek'd block.
|
||
|
*/
|
||
|
/* t_op.mt_op = MTBSR;
|
||
|
t_op.mt_count = 1;
|
||
|
if (ioctl(out.fd, MTIOCTOP, &t_op) == -1) */ {
|
||
|
fprintf(stderr, "%s: cannot position\n", out.name);
|
||
|
exit(1);
|
||
|
/* NOTREACHED */
|
||
|
}
|
||
|
|
||
|
while (cnt++ < out.offset)
|
||
|
if ((n = bwrite(out.fd, out.db, out.dbsz)) != out.dbsz) {
|
||
|
fprintf(stderr, "%s: cannot position "
|
||
|
"by writing: %s\n",
|
||
|
out.name, strerror(errno));
|
||
|
exit(1);
|
||
|
/* NOTREACHED */
|
||
|
}
|
||
|
break;
|
||
|
}
|
||
|
}
|
||
|
|
||
|
/*
|
||
|
* def --
|
||
|
* Copy input to output. Input is buffered until reaches obs, and then
|
||
|
* output until less than obs remains. Only a single buffer is used.
|
||
|
* Worst case buffer calculation is (ibs + obs - 1).
|
||
|
*/
|
||
|
void
|
||
|
def(void)
|
||
|
{
|
||
|
uint64_t cnt;
|
||
|
u_char *inp;
|
||
|
const u_char *t;
|
||
|
|
||
|
if ((t = ctab) != NULL)
|
||
|
for (inp = in.dbp - (cnt = in.dbrcnt); cnt--; ++inp)
|
||
|
*inp = t[*inp];
|
||
|
|
||
|
/* Make the output buffer look right. */
|
||
|
out.dbp = in.dbp;
|
||
|
out.dbcnt = in.dbcnt;
|
||
|
|
||
|
if (in.dbcnt >= out.dbsz) {
|
||
|
/* If the output buffer is full, write it. */
|
||
|
dd_out(0);
|
||
|
|
||
|
/*
|
||
|
* Ddout copies the leftover output to the beginning of
|
||
|
* the buffer and resets the output buffer. Reset the
|
||
|
* input buffer to match it.
|
||
|
*/
|
||
|
in.dbp = out.dbp;
|
||
|
in.dbcnt = out.dbcnt;
|
||
|
}
|
||
|
}
|
||
|
|
||
|
void
|
||
|
def_close(void)
|
||
|
{
|
||
|
|
||
|
/* Just update the count, everything is already in the buffer. */
|
||
|
if (in.dbcnt)
|
||
|
out.dbcnt = in.dbcnt;
|
||
|
}
|
||
|
|
||
|
#ifdef NO_CONV
|
||
|
/* Build a smaller version (i.e. for a miniroot) */
|
||
|
/* These can not be called, but just in case... */
|
||
|
static const char no_block[] = "unblock and -DNO_CONV?\n";
|
||
|
void block(void) { fprintf(stderr, "%s", no_block + 2); exit(1); }
|
||
|
void block_close(void) { fprintf(stderr, "%s", no_block + 2); exit(1); }
|
||
|
void unblock(void) { fprintf(stderr, "%s", no_block); exit(1); }
|
||
|
void unblock_close(void) { fprintf(stderr, "%s", no_block); exit(1); }
|
||
|
#else /* NO_CONV */
|
||
|
|
||
|
/*
|
||
|
* Copy variable length newline terminated records with a max size cbsz
|
||
|
* bytes to output. Records less than cbs are padded with spaces.
|
||
|
*
|
||
|
* max in buffer: MAX(ibs, cbsz)
|
||
|
* max out buffer: obs + cbsz
|
||
|
*/
|
||
|
void
|
||
|
block(void)
|
||
|
{
|
||
|
static int intrunc;
|
||
|
int ch = 0; /* pacify gcc */
|
||
|
uint64_t cnt, maxlen;
|
||
|
u_char *inp, *outp;
|
||
|
const u_char *t;
|
||
|
|
||
|
/*
|
||
|
* Record truncation can cross block boundaries. If currently in a
|
||
|
* truncation state, keep tossing characters until reach a newline.
|
||
|
* Start at the beginning of the buffer, as the input buffer is always
|
||
|
* left empty.
|
||
|
*/
|
||
|
if (intrunc) {
|
||
|
for (inp = in.db, cnt = in.dbrcnt;
|
||
|
cnt && *inp++ != '\n'; --cnt);
|
||
|
if (!cnt) {
|
||
|
in.dbcnt = 0;
|
||
|
in.dbp = in.db;
|
||
|
return;
|
||
|
}
|
||
|
intrunc = 0;
|
||
|
/* Adjust the input buffer numbers. */
|
||
|
in.dbcnt = cnt - 1;
|
||
|
in.dbp = inp + cnt - 1;
|
||
|
}
|
||
|
|
||
|
/*
|
||
|
* Copy records (max cbsz size chunks) into the output buffer. The
|
||
|
* translation is done as we copy into the output buffer.
|
||
|
*/
|
||
|
for (inp = in.dbp - in.dbcnt, outp = out.dbp; in.dbcnt;) {
|
||
|
maxlen = MIN(cbsz, in.dbcnt);
|
||
|
if ((t = ctab) != NULL)
|
||
|
for (cnt = 0;
|
||
|
cnt < maxlen && (ch = *inp++) != '\n'; ++cnt)
|
||
|
*outp++ = t[ch];
|
||
|
else
|
||
|
for (cnt = 0;
|
||
|
cnt < maxlen && (ch = *inp++) != '\n'; ++cnt)
|
||
|
*outp++ = ch;
|
||
|
/*
|
||
|
* Check for short record without a newline. Reassemble the
|
||
|
* input block.
|
||
|
*/
|
||
|
if (ch != '\n' && in.dbcnt < cbsz) {
|
||
|
(void)memmove(in.db, in.dbp - in.dbcnt, in.dbcnt);
|
||
|
break;
|
||
|
}
|
||
|
|
||
|
/* Adjust the input buffer numbers. */
|
||
|
in.dbcnt -= cnt;
|
||
|
if (ch == '\n')
|
||
|
--in.dbcnt;
|
||
|
|
||
|
/* Pad short records with spaces. */
|
||
|
if (cnt < cbsz)
|
||
|
(void)memset(outp, ctab ? ctab[' '] : ' ', cbsz - cnt);
|
||
|
else {
|
||
|
/*
|
||
|
* If the next character wouldn't have ended the
|
||
|
* block, it's a truncation.
|
||
|
*/
|
||
|
if (!in.dbcnt || *inp != '\n')
|
||
|
++st.trunc;
|
||
|
|
||
|
/* Toss characters to a newline. */
|
||
|
for (; in.dbcnt && *inp++ != '\n'; --in.dbcnt);
|
||
|
if (!in.dbcnt)
|
||
|
intrunc = 1;
|
||
|
else
|
||
|
--in.dbcnt;
|
||
|
}
|
||
|
|
||
|
/* Adjust output buffer numbers. */
|
||
|
out.dbp += cbsz;
|
||
|
if ((out.dbcnt += cbsz) >= out.dbsz)
|
||
|
dd_out(0);
|
||
|
outp = out.dbp;
|
||
|
}
|
||
|
in.dbp = in.db + in.dbcnt;
|
||
|
}
|
||
|
|
||
|
void
|
||
|
block_close(void)
|
||
|
{
|
||
|
|
||
|
/*
|
||
|
* Copy any remaining data into the output buffer and pad to a record.
|
||
|
* Don't worry about truncation or translation, the input buffer is
|
||
|
* always empty when truncating, and no characters have been added for
|
||
|
* translation. The bottom line is that anything left in the input
|
||
|
* buffer is a truncated record. Anything left in the output buffer
|
||
|
* just wasn't big enough.
|
||
|
*/
|
||
|
if (in.dbcnt) {
|
||
|
++st.trunc;
|
||
|
(void)memmove(out.dbp, in.dbp - in.dbcnt, in.dbcnt);
|
||
|
(void)memset(out.dbp + in.dbcnt,
|
||
|
ctab ? ctab[' '] : ' ', cbsz - in.dbcnt);
|
||
|
out.dbcnt += cbsz;
|
||
|
}
|
||
|
}
|
||
|
|
||
|
/*
|
||
|
* Convert fixed length (cbsz) records to variable length. Deletes any
|
||
|
* trailing blanks and appends a newline.
|
||
|
*
|
||
|
* max in buffer: MAX(ibs, cbsz) + cbsz
|
||
|
* max out buffer: obs + cbsz
|
||
|
*/
|
||
|
void
|
||
|
unblock(void)
|
||
|
{
|
||
|
uint64_t cnt;
|
||
|
u_char *inp;
|
||
|
const u_char *t;
|
||
|
|
||
|
/* Translation and case conversion. */
|
||
|
if ((t = ctab) != NULL)
|
||
|
for (cnt = in.dbrcnt, inp = in.dbp - 1; cnt--; inp--)
|
||
|
*inp = t[*inp];
|
||
|
/*
|
||
|
* Copy records (max cbsz size chunks) into the output buffer. The
|
||
|
* translation has to already be done or we might not recognize the
|
||
|
* spaces.
|
||
|
*/
|
||
|
for (inp = in.db; in.dbcnt >= cbsz; inp += cbsz, in.dbcnt -= cbsz) {
|
||
|
for (t = inp + cbsz - 1; t >= inp && *t == ' '; --t);
|
||
|
if (t >= inp) {
|
||
|
cnt = t - inp + 1;
|
||
|
(void)memmove(out.dbp, inp, cnt);
|
||
|
out.dbp += cnt;
|
||
|
out.dbcnt += cnt;
|
||
|
}
|
||
|
++out.dbcnt;
|
||
|
*out.dbp++ = '\n';
|
||
|
if (out.dbcnt >= out.dbsz)
|
||
|
dd_out(0);
|
||
|
}
|
||
|
if (in.dbcnt)
|
||
|
(void)memmove(in.db, in.dbp - in.dbcnt, in.dbcnt);
|
||
|
in.dbp = in.db + in.dbcnt;
|
||
|
}
|
||
|
|
||
|
void
|
||
|
unblock_close(void)
|
||
|
{
|
||
|
uint64_t cnt;
|
||
|
u_char *t;
|
||
|
|
||
|
if (in.dbcnt) {
|
||
|
warnx("%s: short input record", in.name);
|
||
|
for (t = in.db + in.dbcnt - 1; t >= in.db && *t == ' '; --t);
|
||
|
if (t >= in.db) {
|
||
|
cnt = t - in.db + 1;
|
||
|
(void)memmove(out.dbp, in.db, cnt);
|
||
|
out.dbp += cnt;
|
||
|
out.dbcnt += cnt;
|
||
|
}
|
||
|
++out.dbcnt;
|
||
|
*out.dbp++ = '\n';
|
||
|
}
|
||
|
}
|
||
|
|
||
|
#endif /* NO_CONV */
|
||
|
|
||
|
#define tv2mS(tv) ((tv).tv_sec * 1000LL + ((tv).tv_usec + 500) / 1000)
|
||
|
|
||
|
void
|
||
|
summary(void)
|
||
|
{
|
||
|
char buf[100];
|
||
|
int64_t mS;
|
||
|
struct timeval tv;
|
||
|
|
||
|
if (progress)
|
||
|
(void)write(STDERR_FILENO, "\n", 1);
|
||
|
|
||
|
(void)gettimeofday(&tv, NULL);
|
||
|
mS = tv2mS(tv) - tv2mS(st.start);
|
||
|
if (mS == 0)
|
||
|
mS = 1;
|
||
|
/* Use snprintf(3) so that we don't reenter stdio(3). */
|
||
|
(void)snprintf(buf, sizeof(buf),
|
||
|
"%llu+%llu records in\n%llu+%llu records out\n",
|
||
|
(unsigned long long)st.in_full, (unsigned long long)st.in_part,
|
||
|
(unsigned long long)st.out_full, (unsigned long long)st.out_part);
|
||
|
(void)write(STDERR_FILENO, buf, strlen(buf));
|
||
|
if (st.swab) {
|
||
|
(void)snprintf(buf, sizeof(buf), "%llu odd length swab %s\n",
|
||
|
(unsigned long long)st.swab,
|
||
|
(st.swab == 1) ? "block" : "blocks");
|
||
|
(void)write(STDERR_FILENO, buf, strlen(buf));
|
||
|
}
|
||
|
if (st.trunc) {
|
||
|
(void)snprintf(buf, sizeof(buf), "%llu truncated %s\n",
|
||
|
(unsigned long long)st.trunc,
|
||
|
(st.trunc == 1) ? "block" : "blocks");
|
||
|
(void)write(STDERR_FILENO, buf, strlen(buf));
|
||
|
}
|
||
|
if (st.sparse) {
|
||
|
(void)snprintf(buf, sizeof(buf), "%llu sparse output %s\n",
|
||
|
(unsigned long long)st.sparse,
|
||
|
(st.sparse == 1) ? "block" : "blocks");
|
||
|
(void)write(STDERR_FILENO, buf, strlen(buf));
|
||
|
}
|
||
|
(void)snprintf(buf, sizeof(buf),
|
||
|
"%llu bytes transferred in %lu.%03d secs (%llu bytes/sec)\n",
|
||
|
(unsigned long long) st.bytes,
|
||
|
(long) (mS / 1000),
|
||
|
(int) (mS % 1000),
|
||
|
(unsigned long long) (st.bytes * 1000LL / mS));
|
||
|
(void)write(STDERR_FILENO, buf, strlen(buf));
|
||
|
}
|
||
|
|
||
|
void
|
||
|
terminate(int notused)
|
||
|
{
|
||
|
|
||
|
exit(0);
|
||
|
/* NOTREACHED */
|
||
|
}
|
||
|
|
||
|
static int c_arg(const void *, const void *);
|
||
|
#ifndef NO_CONV
|
||
|
static int c_conv(const void *, const void *);
|
||
|
#endif
|
||
|
static void f_bs(char *);
|
||
|
static void f_cbs(char *);
|
||
|
static void f_conv(char *);
|
||
|
static void f_count(char *);
|
||
|
static void f_files(char *);
|
||
|
static void f_ibs(char *);
|
||
|
static void f_if(char *);
|
||
|
static void f_obs(char *);
|
||
|
static void f_of(char *);
|
||
|
static void f_seek(char *);
|
||
|
static void f_skip(char *);
|
||
|
static void f_progress(char *);
|
||
|
|
||
|
static const struct arg {
|
||
|
const char *name;
|
||
|
void (*f)(char *);
|
||
|
u_int set, noset;
|
||
|
} args[] = {
|
||
|
/* the array needs to be sorted by the first column so
|
||
|
bsearch() can be used to find commands quickly */
|
||
|
{ "bs", f_bs, C_BS, C_BS|C_IBS|C_OBS|C_OSYNC },
|
||
|
{ "cbs", f_cbs, C_CBS, C_CBS },
|
||
|
{ "conv", f_conv, 0, 0 },
|
||
|
{ "count", f_count, C_COUNT, C_COUNT },
|
||
|
{ "files", f_files, C_FILES, C_FILES },
|
||
|
{ "ibs", f_ibs, C_IBS, C_BS|C_IBS },
|
||
|
{ "if", f_if, C_IF, C_IF },
|
||
|
{ "obs", f_obs, C_OBS, C_BS|C_OBS },
|
||
|
{ "of", f_of, C_OF, C_OF },
|
||
|
{ "progress", f_progress, 0, 0 },
|
||
|
{ "seek", f_seek, C_SEEK, C_SEEK },
|
||
|
{ "skip", f_skip, C_SKIP, C_SKIP },
|
||
|
};
|
||
|
|
||
|
/*
|
||
|
* args -- parse JCL syntax of dd.
|
||
|
*/
|
||
|
void
|
||
|
jcl(char **argv)
|
||
|
{
|
||
|
struct arg *ap, tmp;
|
||
|
char *oper, *arg;
|
||
|
|
||
|
in.dbsz = out.dbsz = 512;
|
||
|
|
||
|
while ((oper = *++argv) != NULL) {
|
||
|
if ((arg = strchr(oper, '=')) == NULL) {
|
||
|
fprintf(stderr, "unknown operand %s\n", oper);
|
||
|
exit(1);
|
||
|
/* NOTREACHED */
|
||
|
}
|
||
|
*arg++ = '\0';
|
||
|
if (!*arg) {
|
||
|
fprintf(stderr, "no value specified for %s\n", oper);
|
||
|
exit(1);
|
||
|
/* NOTREACHED */
|
||
|
}
|
||
|
tmp.name = oper;
|
||
|
if (!(ap = (struct arg *)bsearch(&tmp, args,
|
||
|
sizeof(args)/sizeof(struct arg), sizeof(struct arg),
|
||
|
c_arg))) {
|
||
|
fprintf(stderr, "unknown operand %s\n", tmp.name);
|
||
|
exit(1);
|
||
|
/* NOTREACHED */
|
||
|
}
|
||
|
if (ddflags & ap->noset) {
|
||
|
fprintf(stderr,
|
||
|
"%s: illegal argument combination or already set\n",
|
||
|
tmp.name);
|
||
|
exit(1);
|
||
|
/* NOTREACHED */
|
||
|
}
|
||
|
ddflags |= ap->set;
|
||
|
ap->f(arg);
|
||
|
}
|
||
|
|
||
|
/* Final sanity checks. */
|
||
|
|
||
|
if (ddflags & C_BS) {
|
||
|
/*
|
||
|
* Bs is turned off by any conversion -- we assume the user
|
||
|
* just wanted to set both the input and output block sizes
|
||
|
* and didn't want the bs semantics, so we don't warn.
|
||
|
*/
|
||
|
if (ddflags & (C_BLOCK | C_LCASE | C_SWAB | C_UCASE |
|
||
|
C_UNBLOCK | C_OSYNC | C_ASCII | C_EBCDIC | C_SPARSE)) {
|
||
|
ddflags &= ~C_BS;
|
||
|
ddflags |= C_IBS|C_OBS;
|
||
|
}
|
||
|
|
||
|
/* Bs supersedes ibs and obs. */
|
||
|
if (ddflags & C_BS && ddflags & (C_IBS|C_OBS))
|
||
|
fprintf(stderr, "bs supersedes ibs and obs\n");
|
||
|
}
|
||
|
|
||
|
/*
|
||
|
* Ascii/ebcdic and cbs implies block/unblock.
|
||
|
* Block/unblock requires cbs and vice-versa.
|
||
|
*/
|
||
|
if (ddflags & (C_BLOCK|C_UNBLOCK)) {
|
||
|
if (!(ddflags & C_CBS)) {
|
||
|
fprintf(stderr, "record operations require cbs\n");
|
||
|
exit(1);
|
||
|
/* NOTREACHED */
|
||
|
}
|
||
|
cfunc = ddflags & C_BLOCK ? block : unblock;
|
||
|
} else if (ddflags & C_CBS) {
|
||
|
if (ddflags & (C_ASCII|C_EBCDIC)) {
|
||
|
if (ddflags & C_ASCII) {
|
||
|
ddflags |= C_UNBLOCK;
|
||
|
cfunc = unblock;
|
||
|
} else {
|
||
|
ddflags |= C_BLOCK;
|
||
|
cfunc = block;
|
||
|
}
|
||
|
} else {
|
||
|
fprintf(stderr,
|
||
|
"cbs meaningless if not doing record operations\n");
|
||
|
exit(1);
|
||
|
/* NOTREACHED */
|
||
|
}
|
||
|
} else
|
||
|
cfunc = def;
|
||
|
|
||
|
/* Read, write and seek calls take off_t as arguments.
|
||
|
*
|
||
|
* The following check is not done because an off_t is a quad
|
||
|
* for current NetBSD implementations.
|
||
|
*
|
||
|
* if (in.offset > INT_MAX/in.dbsz || out.offset > INT_MAX/out.dbsz)
|
||
|
* errx(1, "seek offsets cannot be larger than %d", INT_MAX);
|
||
|
*/
|
||
|
}
|
||
|
|
||
|
static int
|
||
|
c_arg(const void *a, const void *b)
|
||
|
{
|
||
|
|
||
|
return (strcmp(((const struct arg *)a)->name,
|
||
|
((const struct arg *)b)->name));
|
||
|
}
|
||
|
|
||
|
static long long strsuftoll(const char* name, const char* arg, int def, unsigned int max)
|
||
|
{
|
||
|
long long result;
|
||
|
|
||
|
if (sscanf(arg, "%lld", &result) == 0)
|
||
|
result = def;
|
||
|
return result;
|
||
|
}
|
||
|
|
||
|
static void
|
||
|
f_bs(char *arg)
|
||
|
{
|
||
|
|
||
|
in.dbsz = out.dbsz = strsuftoll("block size", arg, 1, UINT_MAX);
|
||
|
}
|
||
|
|
||
|
static void
|
||
|
f_cbs(char *arg)
|
||
|
{
|
||
|
|
||
|
cbsz = strsuftoll("conversion record size", arg, 1, UINT_MAX);
|
||
|
}
|
||
|
|
||
|
static void
|
||
|
f_count(char *arg)
|
||
|
{
|
||
|
|
||
|
cpy_cnt = strsuftoll("block count", arg, 0, LLONG_MAX);
|
||
|
if (!cpy_cnt)
|
||
|
terminate(0);
|
||
|
}
|
||
|
|
||
|
static void
|
||
|
f_files(char *arg)
|
||
|
{
|
||
|
|
||
|
files_cnt = (u_int)strsuftoll("file count", arg, 0, UINT_MAX);
|
||
|
if (!files_cnt)
|
||
|
terminate(0);
|
||
|
}
|
||
|
|
||
|
static void
|
||
|
f_ibs(char *arg)
|
||
|
{
|
||
|
|
||
|
if (!(ddflags & C_BS))
|
||
|
in.dbsz = strsuftoll("input block size", arg, 1, UINT_MAX);
|
||
|
}
|
||
|
|
||
|
static void
|
||
|
f_if(char *arg)
|
||
|
{
|
||
|
|
||
|
in.name = arg;
|
||
|
}
|
||
|
|
||
|
static void
|
||
|
f_obs(char *arg)
|
||
|
{
|
||
|
|
||
|
if (!(ddflags & C_BS))
|
||
|
out.dbsz = strsuftoll("output block size", arg, 1, UINT_MAX);
|
||
|
}
|
||
|
|
||
|
static void
|
||
|
f_of(char *arg)
|
||
|
{
|
||
|
|
||
|
out.name = arg;
|
||
|
}
|
||
|
|
||
|
static void
|
||
|
f_seek(char *arg)
|
||
|
{
|
||
|
|
||
|
out.offset = strsuftoll("seek blocks", arg, 0, LLONG_MAX);
|
||
|
}
|
||
|
|
||
|
static void
|
||
|
f_skip(char *arg)
|
||
|
{
|
||
|
|
||
|
in.offset = strsuftoll("skip blocks", arg, 0, LLONG_MAX);
|
||
|
}
|
||
|
|
||
|
static void
|
||
|
f_progress(char *arg)
|
||
|
{
|
||
|
|
||
|
if (*arg != '0')
|
||
|
progress = 1;
|
||
|
}
|
||
|
|
||
|
#ifdef NO_CONV
|
||
|
/* Build a small version (i.e. for a ramdisk root) */
|
||
|
static void
|
||
|
f_conv(char *arg)
|
||
|
{
|
||
|
|
||
|
fprintf(stderr, "conv option disabled\n");
|
||
|
exit(1);
|
||
|
/* NOTREACHED */
|
||
|
}
|
||
|
#else /* NO_CONV */
|
||
|
|
||
|
static const struct conv {
|
||
|
const char *name;
|
||
|
u_int set, noset;
|
||
|
const u_char *ctab;
|
||
|
} clist[] = {
|
||
|
{ "ascii", C_ASCII, C_EBCDIC, e2a_POSIX },
|
||
|
{ "block", C_BLOCK, C_UNBLOCK, NULL },
|
||
|
{ "ebcdic", C_EBCDIC, C_ASCII, a2e_POSIX },
|
||
|
{ "ibm", C_EBCDIC, C_ASCII, a2ibm_POSIX },
|
||
|
{ "lcase", C_LCASE, C_UCASE, NULL },
|
||
|
{ "noerror", C_NOERROR, 0, NULL },
|
||
|
{ "notrunc", C_NOTRUNC, 0, NULL },
|
||
|
{ "oldascii", C_ASCII, C_EBCDIC, e2a_32V },
|
||
|
{ "oldebcdic", C_EBCDIC, C_ASCII, a2e_32V },
|
||
|
{ "oldibm", C_EBCDIC, C_ASCII, a2ibm_32V },
|
||
|
{ "osync", C_OSYNC, C_BS, NULL },
|
||
|
{ "sparse", C_SPARSE, 0, NULL },
|
||
|
{ "swab", C_SWAB, 0, NULL },
|
||
|
{ "sync", C_SYNC, 0, NULL },
|
||
|
{ "ucase", C_UCASE, C_LCASE, NULL },
|
||
|
{ "unblock", C_UNBLOCK, C_BLOCK, NULL },
|
||
|
/* If you add items to this table, be sure to add the
|
||
|
* conversions to the C_BS check in the jcl routine above.
|
||
|
*/
|
||
|
};
|
||
|
|
||
|
static void
|
||
|
f_conv(char *arg)
|
||
|
{
|
||
|
struct conv *cp, tmp;
|
||
|
|
||
|
while (arg != NULL) {
|
||
|
tmp.name = strsep(&arg, ",");
|
||
|
if (!(cp = (struct conv *)bsearch(&tmp, clist,
|
||
|
sizeof(clist)/sizeof(struct conv), sizeof(struct conv),
|
||
|
c_conv))) {
|
||
|
errx(EXIT_FAILURE, "unknown conversion %s", tmp.name);
|
||
|
/* NOTREACHED */
|
||
|
}
|
||
|
if (ddflags & cp->noset) {
|
||
|
errx(EXIT_FAILURE, "%s: illegal conversion combination", tmp.name);
|
||
|
/* NOTREACHED */
|
||
|
}
|
||
|
ddflags |= cp->set;
|
||
|
if (cp->ctab)
|
||
|
ctab = cp->ctab;
|
||
|
}
|
||
|
}
|
||
|
|
||
|
static int
|
||
|
c_conv(const void *a, const void *b)
|
||
|
{
|
||
|
|
||
|
return (strcmp(((const struct conv *)a)->name,
|
||
|
((const struct conv *)b)->name));
|
||
|
}
|
||
|
|
||
|
#endif /* NO_CONV */
|
||
|
|
||
|
|