From c19d619d42588dfcfbd5c23c7290d975d0294e65 Mon Sep 17 00:00:00 2001 From: Jacob Adams Date: Sat, 4 Apr 2015 21:00:10 -0400 Subject: [PATCH] Importing bin/dd Change-Id: Ibdfed821aa834419c9713dc80f698c8ed74ff269 --- bin/Makefile | 2 +- bin/dd/Makefile | 21 ++ bin/dd/args.c | 391 +++++++++++++++++++++++ bin/dd/conv.c | 283 +++++++++++++++++ bin/dd/conv_tab.c | 287 +++++++++++++++++ bin/dd/dd.1 | 477 ++++++++++++++++++++++++++++ bin/dd/dd.c | 598 ++++++++++++++++++++++++++++++++++++ bin/dd/dd.h | 123 ++++++++ bin/dd/dd_hostops.c | 53 ++++ bin/dd/dd_rumpops.c | 52 ++++ bin/dd/extern.h | 82 +++++ bin/dd/misc.c | 342 +++++++++++++++++++++ bin/dd/position.c | 185 +++++++++++ distrib/sets/lists/minix/mi | 3 +- minix/commands/Makefile | 2 +- minix/commands/dd/Makefile | 6 - minix/commands/dd/dd.c | 401 ------------------------ minix/man/man1/Makefile | 2 +- minix/man/man1/dd.1 | 70 ----- 19 files changed, 2899 insertions(+), 481 deletions(-) create mode 100644 bin/dd/Makefile create mode 100644 bin/dd/args.c create mode 100644 bin/dd/conv.c create mode 100644 bin/dd/conv_tab.c create mode 100644 bin/dd/dd.1 create mode 100644 bin/dd/dd.c create mode 100644 bin/dd/dd.h create mode 100644 bin/dd/dd_hostops.c create mode 100644 bin/dd/dd_rumpops.c create mode 100644 bin/dd/extern.h create mode 100644 bin/dd/misc.c create mode 100644 bin/dd/position.c delete mode 100644 minix/commands/dd/Makefile delete mode 100644 minix/commands/dd/dd.c delete mode 100644 minix/man/man1/dd.1 diff --git a/bin/Makefile b/bin/Makefile index 2215fdb5b..183971f56 100644 --- a/bin/Makefile +++ b/bin/Makefile @@ -1,7 +1,7 @@ # $NetBSD: Makefile,v 1.22 2007/12/31 15:31:24 ad Exp $ # @(#)Makefile 8.1 (Berkeley) 5/31/93 -SUBDIR= cat chmod cp date df echo ed expr hostname \ +SUBDIR= cat chmod cp date dd df echo ed expr hostname \ kill ksh ln ls mkdir mv pax pwd rm rmdir sh \ sleep stty sync test diff --git a/bin/dd/Makefile b/bin/dd/Makefile new file mode 100644 index 000000000..bb06576df --- /dev/null +++ b/bin/dd/Makefile @@ -0,0 +1,21 @@ +# $NetBSD: Makefile,v 1.17 2012/08/08 14:09:14 christos Exp $ +# @(#)Makefile 8.1 (Berkeley) 5/31/93 + +.include + +RUMPPRG=dd +SRCS= args.c conv.c dd.c misc.c position.c + +DPADD+= ${LIBUTIL} +LDADD+= -lutil + +.ifdef SMALLPROG +CPPFLAGS+= -DNO_CONV -DNO_MSGFMT -DSMALL +.else +SRCS+= conv_tab.c +.ifdef CRUNCHEDPROG +CPPFLAGS+= -DSMALL +.endif +.endif + +.include diff --git a/bin/dd/args.c b/bin/dd/args.c new file mode 100644 index 000000000..207e30081 --- /dev/null +++ b/bin/dd/args.c @@ -0,0 +1,391 @@ +/* $NetBSD: args.c,v 1.38 2013/07/17 12:55:48 christos 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. + */ + +#include +#ifndef lint +#if 0 +static char sccsid[] = "@(#)args.c 8.3 (Berkeley) 4/2/94"; +#else +__RCSID("$NetBSD: args.c,v 1.38 2013/07/17 12:55:48 christos Exp $"); +#endif +#endif /* not lint */ + +#include +#include + +#include +#include +#include +#include +#include +#include + +#include "dd.h" +#include "extern.h" + +static int c_arg(const void *, const void *); + +#ifdef NO_MSGFMT +static void f_msgfmt(char *) __dead; +#else +static void f_msgfmt(char *); +#endif /* NO_MSGFMT */ + +#ifdef NO_CONV +static void f_conv(char *) __dead; +#else +static void f_conv(char *); +static int c_conv(const void *, const void *); +#endif /* NO_CONV */ + +static void f_bs(char *); +static void f_cbs(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 }, + { "iseek", f_skip, C_SKIP, C_SKIP }, + { "msgfmt", f_msgfmt, 0, 0 }, + { "obs", f_obs, C_OBS, C_BS|C_OBS }, + { "of", f_of, C_OF, C_OF }, + { "oseek", f_seek, C_SEEK, C_SEEK }, + { "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 ((oper = strdup(oper)) == NULL) { + errx(EXIT_FAILURE, + "unable to allocate space for the argument %s", + *argv); + /* NOTREACHED */ + } + if ((arg = strchr(oper, '=')) == NULL) { + errx(EXIT_FAILURE, "unknown operand %s", oper); + /* NOTREACHED */ + } + *arg++ = '\0'; + if (!*arg) { + errx(EXIT_FAILURE, "no value specified for %s", oper); + /* NOTREACHED */ + } + tmp.name = oper; + if (!(ap = bsearch(&tmp, args, + __arraycount(args), sizeof(*args), c_arg))) { + errx(EXIT_FAILURE, "unknown operand %s", tmp.name); + /* NOTREACHED */ + } + if (ddflags & ap->noset) { + errx(EXIT_FAILURE, + "%s: illegal argument combination or already set", + tmp.name); + /* 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)) + warnx("bs supersedes ibs and obs"); + } + + /* + * Ascii/ebcdic and cbs implies block/unblock. + * Block/unblock requires cbs and vice-versa. + */ + if (ddflags & (C_BLOCK|C_UNBLOCK)) { + if (!(ddflags & C_CBS)) { + errx(EXIT_FAILURE, "record operations require cbs"); + /* 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 { + errx(EXIT_FAILURE, + "cbs meaningless if not doing record operations"); + /* 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 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; +} + +#ifdef NO_MSGFMT +/* Build a small version (i.e. for a ramdisk root) */ +static void +f_msgfmt(char *arg) +{ + + errx(EXIT_FAILURE, "msgfmt option disabled"); + /* NOTREACHED */ +} +#else /* NO_MSGFMT */ +static void +f_msgfmt(char *arg) +{ + + /* + * If the format string is not valid, dd_write_msg() will print + * an error and exit. + */ + dd_write_msg(arg, 0); + + msgfmt = arg; +} +#endif /* NO_MSGFMT */ + +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) +{ + + progress = strsuftoll("progress blocks", arg, 0, LLONG_MAX); +} + +#ifdef NO_CONV +/* Build a small version (i.e. for a ramdisk root) */ +static void +f_conv(char *arg) +{ + + errx(EXIT_FAILURE, "conv option disabled"); + /* 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 = bsearch(&tmp, clist, + __arraycount(clist), sizeof(*clist), 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 */ diff --git a/bin/dd/conv.c b/bin/dd/conv.c new file mode 100644 index 000000000..d4a8a0952 --- /dev/null +++ b/bin/dd/conv.c @@ -0,0 +1,283 @@ +/* $NetBSD: conv.c,v 1.17 2003/08/07 09:05:10 agc 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. + */ + +#include +#ifndef lint +#if 0 +static char sccsid[] = "@(#)conv.c 8.3 (Berkeley) 4/2/94"; +#else +__RCSID("$NetBSD: conv.c,v 1.17 2003/08/07 09:05:10 agc Exp $"); +#endif +#endif /* not lint */ + +#include +#include + +#include +#include +#include + +#include "dd.h" +#include "extern.h" + +/* + * 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?"; +void block(void) { errx(EXIT_FAILURE, "%s", no_block + 2); } +void block_close(void) { errx(EXIT_FAILURE, "%s", no_block + 2); } +void unblock(void) { errx(EXIT_FAILURE, "%s", no_block); } +void unblock_close(void) { errx(EXIT_FAILURE, "%s", no_block); } +#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 */ diff --git a/bin/dd/conv_tab.c b/bin/dd/conv_tab.c new file mode 100644 index 000000000..89d32da58 --- /dev/null +++ b/bin/dd/conv_tab.c @@ -0,0 +1,287 @@ +/* $NetBSD: conv_tab.c,v 1.9 2003/08/07 09:05:10 agc Exp $ */ + +/*- + * Copyright (c) 1991, 1993 + * 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. + */ + +#include +#ifndef lint +#if 0 +static char sccsid[] = "@(#)conv_tab.c 8.1 (Berkeley) 5/31/93"; +#else +__RCSID("$NetBSD: conv_tab.c,v 1.9 2003/08/07 09:05:10 agc Exp $"); +#endif +#endif /* not lint */ + +#include + +/* + * There are currently six tables: + * + * ebcdic -> ascii 32V conv=oldascii + * ascii -> ebcdic 32V conv=oldebcdic + * ascii -> ibm ebcdic 32V conv=oldibm + * + * ebcdic -> ascii POSIX/S5 conv=ascii + * ascii -> ebcdic POSIX/S5 conv=ebcdic + * ascii -> ibm ebcdic POSIX/S5 conv=ibm + * + * Other tables are built from these if multiple conversions are being + * done. + * + * Tables used for conversions to/from IBM and EBCDIC to support an extension + * to POSIX P1003.2/D11. The tables referencing POSIX contain data extracted + * from tables 4-3 and 4-4 in P1003.2/Draft 11. The historic tables were + * constructed by running against a file with all possible byte values. + * + * More information can be obtained in "Correspondences of 8-Bit and Hollerith + * Codes for Computer Environments-A USASI Tutorial", Communications of the + * ACM, Volume 11, Number 11, November 1968, pp. 783-789. + */ + +u_char casetab[256]; + +/* EBCDIC to ASCII -- 32V compatible. */ +const u_char e2a_32V[] = { + 0000, 0001, 0002, 0003, 0234, 0011, 0206, 0177, /* 0000 */ + 0227, 0215, 0216, 0013, 0014, 0015, 0016, 0017, /* 0010 */ + 0020, 0021, 0022, 0023, 0235, 0205, 0010, 0207, /* 0020 */ + 0030, 0031, 0222, 0217, 0034, 0035, 0036, 0037, /* 0030 */ + 0200, 0201, 0202, 0203, 0204, 0012, 0027, 0033, /* 0040 */ + 0210, 0211, 0212, 0213, 0214, 0005, 0006, 0007, /* 0050 */ + 0220, 0221, 0026, 0223, 0224, 0225, 0226, 0004, /* 0060 */ + 0230, 0231, 0232, 0233, 0024, 0025, 0236, 0032, /* 0070 */ + 0040, 0240, 0241, 0242, 0243, 0244, 0245, 0246, /* 0100 */ + 0247, 0250, 0133, 0056, 0074, 0050, 0053, 0041, /* 0110 */ + 0046, 0251, 0252, 0253, 0254, 0255, 0256, 0257, /* 0120 */ + 0260, 0261, 0135, 0044, 0052, 0051, 0073, 0136, /* 0130 */ + 0055, 0057, 0262, 0263, 0264, 0265, 0266, 0267, /* 0140 */ + 0270, 0271, 0174, 0054, 0045, 0137, 0076, 0077, /* 0150 */ + 0272, 0273, 0274, 0275, 0276, 0277, 0300, 0301, /* 0160 */ + 0302, 0140, 0072, 0043, 0100, 0047, 0075, 0042, /* 0170 */ + 0303, 0141, 0142, 0143, 0144, 0145, 0146, 0147, /* 0200 */ + 0150, 0151, 0304, 0305, 0306, 0307, 0310, 0311, /* 0210 */ + 0312, 0152, 0153, 0154, 0155, 0156, 0157, 0160, /* 0220 */ + 0161, 0162, 0313, 0314, 0315, 0316, 0317, 0320, /* 0230 */ + 0321, 0176, 0163, 0164, 0165, 0166, 0167, 0170, /* 0240 */ + 0171, 0172, 0322, 0323, 0324, 0325, 0326, 0327, /* 0250 */ + 0330, 0331, 0332, 0333, 0334, 0335, 0336, 0337, /* 0260 */ + 0340, 0341, 0342, 0343, 0344, 0345, 0346, 0347, /* 0270 */ + 0173, 0101, 0102, 0103, 0104, 0105, 0106, 0107, /* 0300 */ + 0110, 0111, 0350, 0351, 0352, 0353, 0354, 0355, /* 0310 */ + 0175, 0112, 0113, 0114, 0115, 0116, 0117, 0120, /* 0320 */ + 0121, 0122, 0356, 0357, 0360, 0361, 0362, 0363, /* 0330 */ + 0134, 0237, 0123, 0124, 0125, 0126, 0127, 0130, /* 0340 */ + 0131, 0132, 0364, 0365, 0366, 0367, 0370, 0371, /* 0350 */ + 0060, 0061, 0062, 0063, 0064, 0065, 0066, 0067, /* 0360 */ + 0070, 0071, 0372, 0373, 0374, 0375, 0376, 0377, /* 0370 */ +}; + +/* ASCII to EBCDIC -- 32V compatible. */ +const u_char a2e_32V[] = { + 0000, 0001, 0002, 0003, 0067, 0055, 0056, 0057, /* 0000 */ + 0026, 0005, 0045, 0013, 0014, 0015, 0016, 0017, /* 0010 */ + 0020, 0021, 0022, 0023, 0074, 0075, 0062, 0046, /* 0020 */ + 0030, 0031, 0077, 0047, 0034, 0035, 0036, 0037, /* 0030 */ + 0100, 0117, 0177, 0173, 0133, 0154, 0120, 0175, /* 0040 */ + 0115, 0135, 0134, 0116, 0153, 0140, 0113, 0141, /* 0050 */ + 0360, 0361, 0362, 0363, 0364, 0365, 0366, 0367, /* 0060 */ + 0370, 0371, 0172, 0136, 0114, 0176, 0156, 0157, /* 0070 */ + 0174, 0301, 0302, 0303, 0304, 0305, 0306, 0307, /* 0100 */ + 0310, 0311, 0321, 0322, 0323, 0324, 0325, 0326, /* 0110 */ + 0327, 0330, 0331, 0342, 0343, 0344, 0345, 0346, /* 0120 */ + 0347, 0350, 0351, 0112, 0340, 0132, 0137, 0155, /* 0130 */ + 0171, 0201, 0202, 0203, 0204, 0205, 0206, 0207, /* 0140 */ + 0210, 0211, 0221, 0222, 0223, 0224, 0225, 0226, /* 0150 */ + 0227, 0230, 0231, 0242, 0243, 0244, 0245, 0246, /* 0160 */ + 0247, 0250, 0251, 0300, 0152, 0320, 0241, 0007, /* 0170 */ + 0040, 0041, 0042, 0043, 0044, 0025, 0006, 0027, /* 0200 */ + 0050, 0051, 0052, 0053, 0054, 0011, 0012, 0033, /* 0210 */ + 0060, 0061, 0032, 0063, 0064, 0065, 0066, 0010, /* 0220 */ + 0070, 0071, 0072, 0073, 0004, 0024, 0076, 0341, /* 0230 */ + 0101, 0102, 0103, 0104, 0105, 0106, 0107, 0110, /* 0240 */ + 0111, 0121, 0122, 0123, 0124, 0125, 0126, 0127, /* 0250 */ + 0130, 0131, 0142, 0143, 0144, 0145, 0146, 0147, /* 0260 */ + 0150, 0151, 0160, 0161, 0162, 0163, 0164, 0165, /* 0270 */ + 0166, 0167, 0170, 0200, 0212, 0213, 0214, 0215, /* 0300 */ + 0216, 0217, 0220, 0232, 0233, 0234, 0235, 0236, /* 0310 */ + 0237, 0240, 0252, 0253, 0254, 0255, 0256, 0257, /* 0320 */ + 0260, 0261, 0262, 0263, 0264, 0265, 0266, 0267, /* 0330 */ + 0270, 0271, 0272, 0273, 0274, 0275, 0276, 0277, /* 0340 */ + 0312, 0313, 0314, 0315, 0316, 0317, 0332, 0333, /* 0350 */ + 0334, 0335, 0336, 0337, 0352, 0353, 0354, 0355, /* 0360 */ + 0356, 0357, 0372, 0373, 0374, 0375, 0376, 0377, /* 0370 */ +}; + +/* ASCII to IBM EBCDIC -- 32V compatible. */ +const u_char a2ibm_32V[] = { + 0000, 0001, 0002, 0003, 0067, 0055, 0056, 0057, /* 0000 */ + 0026, 0005, 0045, 0013, 0014, 0015, 0016, 0017, /* 0010 */ + 0020, 0021, 0022, 0023, 0074, 0075, 0062, 0046, /* 0020 */ + 0030, 0031, 0077, 0047, 0034, 0035, 0036, 0037, /* 0030 */ + 0100, 0132, 0177, 0173, 0133, 0154, 0120, 0175, /* 0040 */ + 0115, 0135, 0134, 0116, 0153, 0140, 0113, 0141, /* 0050 */ + 0360, 0361, 0362, 0363, 0364, 0365, 0366, 0367, /* 0060 */ + 0370, 0371, 0172, 0136, 0114, 0176, 0156, 0157, /* 0070 */ + 0174, 0301, 0302, 0303, 0304, 0305, 0306, 0307, /* 0100 */ + 0310, 0311, 0321, 0322, 0323, 0324, 0325, 0326, /* 0110 */ + 0327, 0330, 0331, 0342, 0343, 0344, 0345, 0346, /* 0120 */ + 0347, 0350, 0351, 0255, 0340, 0275, 0137, 0155, /* 0130 */ + 0171, 0201, 0202, 0203, 0204, 0205, 0206, 0207, /* 0140 */ + 0210, 0211, 0221, 0222, 0223, 0224, 0225, 0226, /* 0150 */ + 0227, 0230, 0231, 0242, 0243, 0244, 0245, 0246, /* 0160 */ + 0247, 0250, 0251, 0300, 0117, 0320, 0241, 0007, /* 0170 */ + 0040, 0041, 0042, 0043, 0044, 0025, 0006, 0027, /* 0200 */ + 0050, 0051, 0052, 0053, 0054, 0011, 0012, 0033, /* 0210 */ + 0060, 0061, 0032, 0063, 0064, 0065, 0066, 0010, /* 0220 */ + 0070, 0071, 0072, 0073, 0004, 0024, 0076, 0341, /* 0230 */ + 0101, 0102, 0103, 0104, 0105, 0106, 0107, 0110, /* 0240 */ + 0111, 0121, 0122, 0123, 0124, 0125, 0126, 0127, /* 0250 */ + 0130, 0131, 0142, 0143, 0144, 0145, 0146, 0147, /* 0260 */ + 0150, 0151, 0160, 0161, 0162, 0163, 0164, 0165, /* 0270 */ + 0166, 0167, 0170, 0200, 0212, 0213, 0214, 0215, /* 0300 */ + 0216, 0217, 0220, 0232, 0233, 0234, 0235, 0236, /* 0310 */ + 0237, 0240, 0252, 0253, 0254, 0255, 0256, 0257, /* 0320 */ + 0260, 0261, 0262, 0263, 0264, 0265, 0266, 0267, /* 0330 */ + 0270, 0271, 0272, 0273, 0274, 0275, 0276, 0277, /* 0340 */ + 0312, 0313, 0314, 0315, 0316, 0317, 0332, 0333, /* 0350 */ + 0334, 0335, 0336, 0337, 0352, 0353, 0354, 0355, /* 0360 */ + 0356, 0357, 0372, 0373, 0374, 0375, 0376, 0377, /* 0370 */ +}; + +/* EBCDIC to ASCII -- POSIX and System V compatible. */ +const u_char e2a_POSIX[] = { + 0000, 0001, 0002, 0003, 0234, 0011, 0206, 0177, /* 0000 */ + 0227, 0215, 0216, 0013, 0014, 0015, 0016, 0017, /* 0010 */ + 0020, 0021, 0022, 0023, 0235, 0205, 0010, 0207, /* 0020 */ + 0030, 0031, 0222, 0217, 0034, 0035, 0036, 0037, /* 0030 */ + 0200, 0201, 0202, 0203, 0204, 0012, 0027, 0033, /* 0040 */ + 0210, 0211, 0212, 0213, 0214, 0005, 0006, 0007, /* 0050 */ + 0220, 0221, 0026, 0223, 0224, 0225, 0226, 0004, /* 0060 */ + 0230, 0231, 0232, 0233, 0024, 0025, 0236, 0032, /* 0070 */ + 0040, 0240, 0241, 0242, 0243, 0244, 0245, 0246, /* 0100 */ + 0247, 0250, 0325, 0056, 0074, 0050, 0053, 0174, /* 0110 */ + 0046, 0251, 0252, 0253, 0254, 0255, 0256, 0257, /* 0120 */ + 0260, 0261, 0041, 0044, 0052, 0051, 0073, 0176, /* 0130 */ + 0055, 0057, 0262, 0263, 0264, 0265, 0266, 0267, /* 0140 */ + 0270, 0271, 0313, 0054, 0045, 0137, 0076, 0077, /* 0150 */ + 0272, 0273, 0274, 0275, 0276, 0277, 0300, 0301, /* 0160 */ + 0302, 0140, 0072, 0043, 0100, 0047, 0075, 0042, /* 0170 */ + 0303, 0141, 0142, 0143, 0144, 0145, 0146, 0147, /* 0200 */ + 0150, 0151, 0304, 0305, 0306, 0307, 0310, 0311, /* 0210 */ + 0312, 0152, 0153, 0154, 0155, 0156, 0157, 0160, /* 0220 */ + 0161, 0162, 0136, 0314, 0315, 0316, 0317, 0320, /* 0230 */ + 0321, 0345, 0163, 0164, 0165, 0166, 0167, 0170, /* 0240 */ + 0171, 0172, 0322, 0323, 0324, 0133, 0326, 0327, /* 0250 */ + 0330, 0331, 0332, 0333, 0334, 0335, 0336, 0337, /* 0260 */ + 0340, 0341, 0342, 0343, 0344, 0135, 0346, 0347, /* 0270 */ + 0173, 0101, 0102, 0103, 0104, 0105, 0106, 0107, /* 0300 */ + 0110, 0111, 0350, 0351, 0352, 0353, 0354, 0355, /* 0310 */ + 0175, 0112, 0113, 0114, 0115, 0116, 0117, 0120, /* 0320 */ + 0121, 0122, 0356, 0357, 0360, 0361, 0362, 0363, /* 0330 */ + 0134, 0237, 0123, 0124, 0125, 0126, 0127, 0130, /* 0340 */ + 0131, 0132, 0364, 0365, 0366, 0367, 0370, 0371, /* 0350 */ + 0060, 0061, 0062, 0063, 0064, 0065, 0066, 0067, /* 0360 */ + 0070, 0071, 0372, 0373, 0374, 0375, 0376, 0377, /* 0370 */ +}; + +/* ASCII to EBCDIC -- POSIX and System V compatible. */ +const u_char a2e_POSIX[] = { + 0000, 0001, 0002, 0003, 0067, 0055, 0056, 0057, /* 0000 */ + 0026, 0005, 0045, 0013, 0014, 0015, 0016, 0017, /* 0010 */ + 0020, 0021, 0022, 0023, 0074, 0075, 0062, 0046, /* 0020 */ + 0030, 0031, 0077, 0047, 0034, 0035, 0036, 0037, /* 0030 */ + 0100, 0132, 0177, 0173, 0133, 0154, 0120, 0175, /* 0040 */ + 0115, 0135, 0134, 0116, 0153, 0140, 0113, 0141, /* 0050 */ + 0360, 0361, 0362, 0363, 0364, 0365, 0366, 0367, /* 0060 */ + 0370, 0371, 0172, 0136, 0114, 0176, 0156, 0157, /* 0070 */ + 0174, 0301, 0302, 0303, 0304, 0305, 0306, 0307, /* 0100 */ + 0310, 0311, 0321, 0322, 0323, 0324, 0325, 0326, /* 0110 */ + 0327, 0330, 0331, 0342, 0343, 0344, 0345, 0346, /* 0120 */ + 0347, 0350, 0351, 0255, 0340, 0275, 0232, 0155, /* 0130 */ + 0171, 0201, 0202, 0203, 0204, 0205, 0206, 0207, /* 0140 */ + 0210, 0211, 0221, 0222, 0223, 0224, 0225, 0226, /* 0150 */ + 0227, 0230, 0231, 0242, 0243, 0244, 0245, 0246, /* 0160 */ + 0247, 0250, 0251, 0300, 0117, 0320, 0137, 0007, /* 0170 */ + 0040, 0041, 0042, 0043, 0044, 0025, 0006, 0027, /* 0200 */ + 0050, 0051, 0052, 0053, 0054, 0011, 0012, 0033, /* 0210 */ + 0060, 0061, 0032, 0063, 0064, 0065, 0066, 0010, /* 0220 */ + 0070, 0071, 0072, 0073, 0004, 0024, 0076, 0341, /* 0230 */ + 0101, 0102, 0103, 0104, 0105, 0106, 0107, 0110, /* 0240 */ + 0111, 0121, 0122, 0123, 0124, 0125, 0126, 0127, /* 0250 */ + 0130, 0131, 0142, 0143, 0144, 0145, 0146, 0147, /* 0260 */ + 0150, 0151, 0160, 0161, 0162, 0163, 0164, 0165, /* 0270 */ + 0166, 0167, 0170, 0200, 0212, 0213, 0214, 0215, /* 0300 */ + 0216, 0217, 0220, 0152, 0233, 0234, 0235, 0236, /* 0310 */ + 0237, 0240, 0252, 0253, 0254, 0112, 0256, 0257, /* 0320 */ + 0260, 0261, 0262, 0263, 0264, 0265, 0266, 0267, /* 0330 */ + 0270, 0271, 0272, 0273, 0274, 0241, 0276, 0277, /* 0340 */ + 0312, 0313, 0314, 0315, 0316, 0317, 0332, 0333, /* 0350 */ + 0334, 0335, 0336, 0337, 0352, 0353, 0354, 0355, /* 0360 */ + 0356, 0357, 0372, 0373, 0374, 0375, 0376, 0377, /* 0370 */ +}; + +/* ASCII to IBM EBCDIC -- POSIX and System V compatible. */ +const u_char a2ibm_POSIX[] = { + 0000, 0001, 0002, 0003, 0067, 0055, 0056, 0057, /* 0000 */ + 0026, 0005, 0045, 0013, 0014, 0015, 0016, 0017, /* 0010 */ + 0020, 0021, 0022, 0023, 0074, 0075, 0062, 0046, /* 0020 */ + 0030, 0031, 0077, 0047, 0034, 0035, 0036, 0037, /* 0030 */ + 0100, 0132, 0177, 0173, 0133, 0154, 0120, 0175, /* 0040 */ + 0115, 0135, 0134, 0116, 0153, 0140, 0113, 0141, /* 0050 */ + 0360, 0361, 0362, 0363, 0364, 0365, 0366, 0367, /* 0060 */ + 0370, 0371, 0172, 0136, 0114, 0176, 0156, 0157, /* 0070 */ + 0174, 0301, 0302, 0303, 0304, 0305, 0306, 0307, /* 0100 */ + 0310, 0311, 0321, 0322, 0323, 0324, 0325, 0326, /* 0110 */ + 0327, 0330, 0331, 0342, 0343, 0344, 0345, 0346, /* 0120 */ + 0347, 0350, 0351, 0255, 0340, 0275, 0137, 0155, /* 0130 */ + 0171, 0201, 0202, 0203, 0204, 0205, 0206, 0207, /* 0140 */ + 0210, 0211, 0221, 0222, 0223, 0224, 0225, 0226, /* 0150 */ + 0227, 0230, 0231, 0242, 0243, 0244, 0245, 0246, /* 0160 */ + 0247, 0250, 0251, 0300, 0117, 0320, 0241, 0007, /* 0170 */ + 0040, 0041, 0042, 0043, 0044, 0025, 0006, 0027, /* 0200 */ + 0050, 0051, 0052, 0053, 0054, 0011, 0012, 0033, /* 0210 */ + 0060, 0061, 0032, 0063, 0064, 0065, 0066, 0010, /* 0220 */ + 0070, 0071, 0072, 0073, 0004, 0024, 0076, 0341, /* 0230 */ + 0101, 0102, 0103, 0104, 0105, 0106, 0107, 0110, /* 0240 */ + 0111, 0121, 0122, 0123, 0124, 0125, 0126, 0127, /* 0250 */ + 0130, 0131, 0142, 0143, 0144, 0145, 0146, 0147, /* 0260 */ + 0150, 0151, 0160, 0161, 0162, 0163, 0164, 0165, /* 0270 */ + 0166, 0167, 0170, 0200, 0212, 0213, 0214, 0215, /* 0300 */ + 0216, 0217, 0220, 0232, 0233, 0234, 0235, 0236, /* 0310 */ + 0237, 0240, 0252, 0253, 0254, 0255, 0256, 0257, /* 0320 */ + 0260, 0261, 0262, 0263, 0264, 0265, 0266, 0267, /* 0330 */ + 0270, 0271, 0272, 0273, 0274, 0275, 0276, 0277, /* 0340 */ + 0312, 0313, 0314, 0315, 0316, 0317, 0332, 0333, /* 0350 */ + 0334, 0335, 0336, 0337, 0352, 0353, 0354, 0355, /* 0360 */ + 0356, 0357, 0372, 0373, 0374, 0375, 0376, 0377, /* 0370 */ +}; diff --git a/bin/dd/dd.1 b/bin/dd/dd.1 new file mode 100644 index 000000000..d62969650 --- /dev/null +++ b/bin/dd/dd.1 @@ -0,0 +1,477 @@ +.\" $NetBSD: dd.1,v 1.25 2012/06/20 17:54:16 wiz Exp $ +.\" +.\" Copyright (c) 1990, 1993 +.\" 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. +.\" +.\" 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.1 8.2 (Berkeley) 1/13/94 +.\" +.Dd November 6, 2011 +.Dt DD 1 +.Os +.Sh NAME +.Nm dd +.Nd convert and copy a file +.Sh SYNOPSIS +.Nm +.Op operand ... +.Sh DESCRIPTION +The +.Nm +utility copies the standard input to the standard output. +Input data is read and written in 512-byte blocks. +If input reads are short, input from multiple reads are aggregated +to form the output block. +When finished, +.Nm +displays the number of complete and partial input and output blocks +and truncated input records to the standard error output. +.Pp +The following operands are available: +.Bl -tag -width of=file +.It Cm bs= Ns Ar n +Set both input and output block size, superseding the +.Cm ibs +and +.Cm obs +operands. +If no conversion values other than +.Cm noerror , +.Cm notrunc +or +.Cm sync +are specified, then each input block is copied to the output as a +single block without any aggregation of short blocks. +.It Cm cbs= Ns Ar n +Set the conversion record size to +.Va n +bytes. +The conversion record size is required by the record oriented conversion +values. +.It Cm count= Ns Ar n +Copy only +.Va n +input blocks. +.It Cm files= Ns Ar n +Copy +.Va n +input files before terminating. +This operand is only applicable when the input device is a tape. +.It Cm ibs= Ns Ar n +Set the input block size to +.Va n +bytes instead of the default 512. +.It Cm if= Ns Ar file +Read input from +.Ar file +instead of the standard input. +.It Cm iseek= Ns Ar n +Seek on the input file +.Ar n +blocks. +This is synonymous with +.Cm skip= Ns Ar n . +.It Cm msgfmt= Ns Ar fmt +Specify the message format +.Ar fmt +to be used when writing information to standard output. +Possible values are: +.Bl -tag -width xxxxx -offset indent -compact +.It quiet +turns off information summary report except for errors and +.Cm progress . +.It posix +default information summary report as specified by POSIX. +.It human +default information summary report extended with human-readable +values. +.El +.Pp +When +.Ar fmt +does not correspond to any value given above, +it contains a string that will be used as format specifier +for the information summary output. +Each conversion specification is introduced by the character +.Cm % . +The following ones are available: +.Bl -tag -width xx -offset indent -compact +.It b +total number of bytes transferred +.It B +total number of bytes transferred in +.Xr humanize_number 3 +format +.It e +speed transfer +.It E +speed transfer in +.Xr humanize_number 3 +format +.It i +number of partial input block(s) +.It I +number of full input block(s) +.It o +number of partial output block(s) +.It O +number of full output block(s) +.It s +time elapsed since the beginning in +.Do seconds.ms Dc +format +.It p +number of sparse output blocks +.It t +number of truncated blocks +.It w +number of odd-length swab blocks +.It P +singular/plural of +.Do block Dc +depending on number of sparse blocks +.It T +singular/plural of +.Do block Dc +depending on number of truncated blocks +.It W +singular/plural of +.Do block Dc +depending on number of swab blocks +.El +.It Cm obs= Ns Ar n +Set the output block size to +.Va n +bytes instead of the default 512. +.It Cm of= Ns Ar file +Write output to +.Ar file +instead of the standard output. +Any regular output file is truncated unless the +.Cm notrunc +conversion value is specified. +If an initial portion of the output file is skipped (see the +.Cm seek +operand) +the output file is truncated at that point. +.It Cm oseek= Ns Ar n +Seek on the output file +.Ar n +blocks. +This is synonymous with +.Cm seek= Ns Ar n . +.It Cm seek= Ns Ar n +Seek +.Va n +blocks from the beginning of the output before copying. +On non-tape devices, an +.Xr lseek 2 +operation is used. +Otherwise, existing blocks are read and the data discarded. +If the user does not have read permission for the tape, it is positioned +using the tape +.Xr ioctl 2 +function calls. +If the seek operation is past the end of file, space from the current +end of file to the specified offset is filled with blocks of +.Tn NUL +bytes. +.It Cm skip= Ns Ar n +Skip +.Va n +blocks from the beginning of the input before copying. +On input which supports seeks, an +.Xr lseek 2 +operation is used. +Otherwise, input data is read and discarded. +For pipes, the correct number of bytes is read. +For all other devices, the correct number of blocks is read without +distinguishing between a partial or complete block being read. +.It Cm progress= Ns Ar n +Switch on display of progress if +.Va n +is set to any non-zero value. +This will cause a +.Dq \&. +to be printed (to the standard error output) for every +.Va n +full or partial blocks written to the output file. +.Sm off +.It Cm conv= Cm value Op \&, Cm value \&... +.Sm on +Where +.Cm value +is one of the symbols from the following list. +.Bl -tag -width unblock +.It Cm ascii , oldascii +The same as the +.Cm unblock +value except that characters are translated from +.Tn EBCDIC +to +.Tn ASCII +before the +records are converted. +(These values imply +.Cm unblock +if the operand +.Cm cbs +is also specified.) +There are two conversion maps for +.Tn ASCII . +The value +.Cm ascii +specifies the recommended one which is compatible with +.At V . +The value +.Cm oldascii +specifies the one used in historic +.Tn AT\*[Am]T +and pre- +.Bx 4.3 Reno +systems. +.It Cm block +Treats the input as a sequence of newline or end-of-file terminated variable +length records independent of input and output block boundaries. +Any trailing newline character is discarded. +Each input record is converted to a fixed length output record where the +length is specified by the +.Cm cbs +operand. +Input records shorter than the conversion record size are padded with spaces. +Input records longer than the conversion record size are truncated. +The number of truncated input records, if any, are reported to the standard +error output at the completion of the copy. +.It Cm ebcdic , ibm , oldebcdic , oldibm +The same as the +.Cm block +value except that characters are translated from +.Tn ASCII +to +.Tn EBCDIC +after the +records are converted. +(These values imply +.Cm block +if the operand +.Cm cbs +is also specified.) +There are four conversion maps for +.Tn EBCDIC . +The value +.Cm ebcdic +specifies the recommended one which is compatible with +.At V . +The value +.Cm ibm +is a slightly different mapping, which is compatible with the +.At V +.Cm ibm +value. +The values +.Cm oldebcdic +and +.Cm oldibm +are maps used in historic +.Tn AT\*[Am]T +and pre +.Bx 4.3 Reno +systems. +.It Cm lcase +Transform uppercase characters into lowercase characters. +.It Cm noerror +Do not stop processing on an input error. +When an input error occurs, a diagnostic message followed by the current +input and output block counts will be written to the standard error output +in the same format as the standard completion message. +If the +.Cm sync +conversion is also specified, any missing input data will be replaced +with +.Tn NUL +bytes (or with spaces if a block oriented conversion value was +specified) and processed as a normal input buffer. +If the +.Cm sync +conversion is not specified, the input block is omitted from the output. +On input files which are not tapes or pipes, the file offset +will be positioned past the block in which the error occurred using +.Xr lseek 2 . +.It Cm notrunc +Do not truncate the output file. +This will preserve any blocks in the output file not explicitly written +by +.Nm . +The +.Cm notrunc +value is not supported for tapes. +.It Cm osync +Pad the final output block to the full output block size. +If the input file is not a multiple of the output block size +after conversion, this conversion forces the final output block +to be the same size as preceding blocks for use on devices that require +regularly sized blocks to be written. +This option is incompatible with use of the +.Cm bs= Ns Ar n +block size specification. +.It Cm sparse +If one or more non-final output blocks would consist solely of +.Dv NUL +bytes, try to seek the output file by the required space instead of +filling them with +.Dv NUL Ns s . +This results in a sparse file on some file systems. +.It Cm swab +Swap every pair of input bytes. +If an input buffer has an odd number of bytes, the last byte will be +ignored during swapping. +.It Cm sync +Pad every input block to the input buffer size. +Spaces are used for pad bytes if a block oriented conversion value is +specified, otherwise +.Tn NUL +bytes are used. +.It Cm ucase +Transform lowercase characters into uppercase characters. +.It Cm unblock +Treats the input as a sequence of fixed length records independent of input +and output block boundaries. +The length of the input records is specified by the +.Cm cbs +operand. +Any trailing space characters are discarded and a newline character is +appended. +.El +.El +.Pp +Where sizes are specified, a decimal number of bytes is expected. +Two or more numbers may be separated by an +.Dq x +to indicate a product. +Each number may have one of the following optional suffixes: +.Bl -tag -width 3n -offset indent -compact +.It b +Block; multiply by 512 +.It k +Kibi; multiply by 1024 (1 KiB) +.It m +Mebi; multiply by 1048576 (1 MiB) +.It g +Gibi; multiply by 1073741824 (1 GiB) +.It t +Tebi; multiply by 1099511627776 (1 TiB) +.It w +Word; multiply by the number of bytes in an integer +.El +.Pp +When finished, +.Nm +displays the number of complete and partial input and output blocks, +truncated input records and odd-length byte-swapping blocks to the +standard error output. +A partial input block is one where less than the input block size +was read. +A partial output block is one where less than the output block size +was written. +Partial output blocks to tape devices are considered fatal errors. +Otherwise, the rest of the block will be written. +Partial output blocks to character devices will produce a warning message. +A truncated input block is one where a variable length record oriented +conversion value was specified and the input line was too long to +fit in the conversion record or was not newline terminated. +.Pp +Normally, data resulting from input or conversion or both are aggregated +into output blocks of the specified size. +After the end of input is reached, any remaining output is written as +a block. +This means that the final output block may be shorter than the output +block size. +.Pp +If +.Nm +receives a +.Dv SIGINFO +signal +(see the +.Ic status +argument for +.Xr stty 1 ) , +the current input and output block counts will +be written to the standard error output +in the same format as the standard completion message. +If +.Nm +receives a +.Dv SIGINT +signal, the current input and output block counts will +be written to the standard error output +in the same format as the standard completion message and +.Nm +will exit. +.Sh EXIT STATUS +The +.Nm +utility exits 0 on success and \*[Gt]0 if an error occurred. +.Sh EXAMPLES +To print summary information in human-readable form: +.Pp +.Dl dd if=/dev/zero of=/dev/null count=1 msgfmt=human +.Pp +To customize the information summary output and print it through +.Xr unvis 3 : +.Pp +.Bd -literal -offset indent +dd if=/dev/zero of=/dev/null count=1 \e + msgfmt='speed:%E, in %s seconds\en' 2\*[Gt]\*[Am]1 | unvis +.Ed +.Sh SEE ALSO +.Xr cp 1 , +.Xr mt 1 , +.Xr tr 1 +.Sh STANDARDS +The +.Nm +utility is expected to be a superset of the +.St -p1003.2 +standard. +The +.Cm files +and +.Cm msgfmt +operands and the +.Cm ascii , +.Cm ebcdic , +.Cm ibm , +.Cm oldascii , +.Cm oldebcdic +and +.Cm oldibm +values are extensions to the +.Tn POSIX +standard. diff --git a/bin/dd/dd.c b/bin/dd/dd.c new file mode 100644 index 000000000..03d080cd4 --- /dev/null +++ b/bin/dd/dd.c @@ -0,0 +1,598 @@ +/* $NetBSD: dd.c,v 1.49 2012/02/21 01:49:01 matt 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. + */ + +#include +#ifndef lint +__COPYRIGHT("@(#) Copyright (c) 1991, 1993, 1994\ + The Regents of the University of California. All rights reserved."); +#endif /* not lint */ + +#ifndef lint +#if 0 +static char sccsid[] = "@(#)dd.c 8.5 (Berkeley) 4/2/94"; +#else +__RCSID("$NetBSD: dd.c,v 1.49 2012/02/21 01:49:01 matt Exp $"); +#endif +#endif /* not lint */ + +#include +#include +#include +#include +#include + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include "dd.h" +#include "extern.h" + +static void dd_close(void); +static void dd_in(void); +static void getfdtype(IO *); +static void redup_clean_fd(IO *); +static void setup(void); + +int main(int, char *[]); + +IO in, out; /* input/output state */ +STAT st; /* statistics */ +void (*cfunc)(void); /* conversion function */ +uint64_t cpy_cnt; /* # of blocks to copy */ +static off_t pending = 0; /* pending seek if sparse */ +u_int ddflags; /* conversion options */ +uint64_t cbsz; /* conversion block size */ +u_int files_cnt = 1; /* # of files to copy */ +uint64_t progress = 0; /* display sign of life */ +const u_char *ctab; /* conversion table */ +sigset_t infoset; /* a set blocking SIGINFO */ +const char *msgfmt = "posix"; /* default summary() message format */ + +/* + * Ops for stdin/stdout and crunch'd dd. These are always host ops. + */ +static const struct ddfops ddfops_stdfd = { + .op_open = open, + .op_close = close, + .op_fcntl = fcntl, + .op_ioctl = ioctl, + .op_fstat = fstat, + .op_fsync = fsync, + .op_ftruncate = ftruncate, + .op_lseek = lseek, + .op_read = read, + .op_write = write, +}; +extern const struct ddfops ddfops_prog; + +int +main(int argc, char *argv[]) +{ + int ch; + + setprogname(argv[0]); + (void)setlocale(LC_ALL, ""); + + while ((ch = getopt(argc, argv, "")) != -1) { + switch (ch) { + default: + errx(EXIT_FAILURE, "usage: dd [operand ...]"); + /* NOTREACHED */ + } + } + argc -= (optind - 1); + argv += (optind - 1); + + jcl(argv); +#ifndef CRUNCHOPS + if (ddfops_prog.op_init && ddfops_prog.op_init() == -1) + err(1, "prog init"); +#endif + setup(); + + (void)signal(SIGINFO, summaryx); + (void)signal(SIGINT, terminate); + (void)sigemptyset(&infoset); + (void)sigaddset(&infoset, SIGINFO); + + (void)atexit(summary); + + while (files_cnt--) + dd_in(); + + dd_close(); + exit(0); + /* NOTREACHED */ +} + +static void +setup(void) +{ +#ifdef CRUNCHOPS + const struct ddfops *prog_ops = &ddfops_stdfd; +#else + const struct ddfops *prog_ops = &ddfops_prog; +#endif + + if (in.name == NULL) { + in.name = "stdin"; + in.fd = STDIN_FILENO; + in.ops = &ddfops_stdfd; + } else { + in.ops = prog_ops; + in.fd = ddop_open(in, in.name, O_RDONLY, 0); + if (in.fd < 0) + err(EXIT_FAILURE, "%s", in.name); + /* NOTREACHED */ + + /* Ensure in.fd is outside the stdio descriptor range */ + redup_clean_fd(&in); + } + + getfdtype(&in); + + if (files_cnt > 1 && !(in.flags & ISTAPE)) { + errx(EXIT_FAILURE, "files is not supported for non-tape devices"); + /* NOTREACHED */ + } + + if (out.name == NULL) { + /* No way to check for read access here. */ + out.fd = STDOUT_FILENO; + out.name = "stdout"; + out.ops = &ddfops_stdfd; + } else { + out.ops = prog_ops; +#define OFLAGS \ + (O_CREAT | (ddflags & (C_SEEK | C_NOTRUNC) ? 0 : O_TRUNC)) + out.fd = ddop_open(out, out.name, O_RDWR | OFLAGS, DEFFILEMODE); + /* + * May not have read access, so try again with write only. + * Without read we may have a problem if output also does + * not support seeks. + */ + if (out.fd < 0) { + out.fd = ddop_open(out, out.name, O_WRONLY | OFLAGS, + DEFFILEMODE); + out.flags |= NOREAD; + } + if (out.fd < 0) { + err(EXIT_FAILURE, "%s", out.name); + /* NOTREACHED */ + } + + /* Ensure out.fd is outside the stdio descriptor range */ + redup_clean_fd(&out); + } + + getfdtype(&out); + + /* + * Allocate space for the input and output buffers. If not doing + * record oriented I/O, only need a single buffer. + */ + if (!(ddflags & (C_BLOCK|C_UNBLOCK))) { + size_t dbsz = out.dbsz; + if (!(ddflags & C_BS)) + dbsz += in.dbsz - 1; + if ((in.db = malloc(dbsz)) == NULL) { + err(EXIT_FAILURE, NULL); + /* NOTREACHED */ + } + out.db = in.db; + } else if ((in.db = + malloc((u_int)(MAX(in.dbsz, cbsz) + cbsz))) == NULL || + (out.db = malloc((u_int)(out.dbsz + cbsz))) == NULL) { + err(EXIT_FAILURE, NULL); + /* NOTREACHED */ + } + in.dbp = in.db; + out.dbp = out.db; + + /* Position the input/output streams. */ + if (in.offset) + pos_in(); + if (out.offset) + pos_out(); + + /* + * Truncate the output file; ignore errors because it fails on some + * kinds of output files, tapes, for example. + */ + if ((ddflags & (C_OF | C_SEEK | C_NOTRUNC)) == (C_OF | C_SEEK)) + (void)ddop_ftruncate(out, out.fd, (off_t)out.offset * out.dbsz); + + /* + * If converting case at the same time as another conversion, build a + * table that does both at once. If just converting case, use the + * built-in tables. + */ + if (ddflags & (C_LCASE|C_UCASE)) { +#ifdef NO_CONV + /* Should not get here, but just in case... */ + errx(EXIT_FAILURE, "case conv and -DNO_CONV"); + /* NOTREACHED */ +#else /* NO_CONV */ + u_int cnt; + + if (ddflags & C_ASCII || ddflags & C_EBCDIC) { + if (ddflags & C_LCASE) { + for (cnt = 0; cnt < 256; ++cnt) + casetab[cnt] = tolower(ctab[cnt]); + } else { + for (cnt = 0; cnt < 256; ++cnt) + casetab[cnt] = toupper(ctab[cnt]); + } + } else { + if (ddflags & C_LCASE) { + for (cnt = 0; cnt < 256; ++cnt) + casetab[cnt] = tolower(cnt); + } else { + for (cnt = 0; cnt < 256; ++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 (io->ops->op_fstat(io->fd, &sb)) { + err(EXIT_FAILURE, "%s", io->name); + /* NOTREACHED */ + } + if (S_ISCHR(sb.st_mode)) + io->flags |= io->ops->op_ioctl(io->fd, MTIOCGET, &mt) + ? ISCHR : ISTAPE; + else if (io->ops->op_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 void +redup_clean_fd(IO *io) +{ + int fd = io->fd; + int newfd; + + if (fd != STDIN_FILENO && fd != STDOUT_FILENO && + fd != STDERR_FILENO) + /* File descriptor is ok, return immediately. */ + return; + + /* + * 3 is the first descriptor greater than STD*_FILENO. Any + * free descriptor valued 3 or above is acceptable... + */ + newfd = io->ops->op_fcntl(fd, F_DUPFD, 3); + if (newfd < 0) { + err(EXIT_FAILURE, "dupfd IO"); + /* NOTREACHED */ + } + + io->ops->op_close(fd); + io->fd = 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 = ddop_read(in, 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. + */ + if (!(flags & C_NOERROR)) { + err(EXIT_FAILURE, "%s", in.name); + /* NOTREACHED */ + } + warn("%s", in.name); + 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)) && + ddop_lseek(in, in.fd, (off_t)in.dbsz, SEEK_CUR)) + warn("%s", in.name); + + /* 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 ((uint64_t)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 necessary, 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 deferred 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 with other processes and close(2) just + * decreases the reference count. + */ + if (out.fd == STDOUT_FILENO && ddop_fsync(out, out.fd) == -1 + && errno != EINVAL) { + err(EXIT_FAILURE, "fsync stdout"); + /* NOTREACHED */ + } + if (ddop_close(out, out.fd) == -1) { + err(EXIT_FAILURE, "close"); + /* 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 (ddop_lseek(out, + out.fd, pending, SEEK_CUR) == -1) + err(EXIT_FAILURE, "%s: seek error creating sparse file", + out.name); + } + nw = bwrite(&out, outp, cnt); + if (nw <= 0) { + if (nw == 0) + errx(EXIT_FAILURE, + "%s: end of device", out.name); + /* NOTREACHED */ + if (errno != EINTR) + err(EXIT_FAILURE, "%s", out.name); + /* NOTREACHED */ + 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 ((uint64_t)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; + warnx("%s: short write on character device", out.name); + } + if (out.flags & ISTAPE) + errx(EXIT_FAILURE, + "%s: short write on tape device", out.name); + /* 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 && (st.out_full + st.out_part) % progress == 0) + (void)write(STDERR_FILENO, ".", 1); +} + +/* + * A protected against SIGINFO write + */ +ssize_t +bwrite(IO *io, const void *buf, size_t len) +{ + sigset_t oset; + ssize_t rv; + int oerrno; + + (void)sigprocmask(SIG_BLOCK, &infoset, &oset); + rv = io->ops->op_write(io->fd, buf, len); + oerrno = errno; + (void)sigprocmask(SIG_SETMASK, &oset, NULL); + errno = oerrno; + return (rv); +} diff --git a/bin/dd/dd.h b/bin/dd/dd.h new file mode 100644 index 000000000..4aea5192d --- /dev/null +++ b/bin/dd/dd.h @@ -0,0 +1,123 @@ +/* $NetBSD: dd.h,v 1.15 2011/02/04 19:42:12 pooka 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 + +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). */ +#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 diff --git a/bin/dd/dd_hostops.c b/bin/dd/dd_hostops.c new file mode 100644 index 000000000..d6e7a89e7 --- /dev/null +++ b/bin/dd/dd_hostops.c @@ -0,0 +1,53 @@ +/* $NetBSD: dd_hostops.c,v 1.1 2011/02/04 19:42:12 pooka Exp $ */ + +/*- + * Copyright (c) 2010 The NetBSD Foundation, Inc. + * All rights reserved. + * + * 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. + * + * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. 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 FOUNDATION 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. + */ + +#include +#ifndef lint +__RCSID("$NetBSD: dd_hostops.c,v 1.1 2011/02/04 19:42:12 pooka Exp $"); +#endif /* !lint */ + +#include +#include + +#include +#include + +#include "dd.h" + +const struct ddfops ddfops_prog = { + .op_open = open, + .op_close = close, + .op_fcntl = fcntl, + .op_ioctl = ioctl, + .op_fstat = fstat, + .op_fsync = fsync, + .op_ftruncate = ftruncate, + .op_lseek = lseek, + .op_read = read, + .op_write = write, +}; diff --git a/bin/dd/dd_rumpops.c b/bin/dd/dd_rumpops.c new file mode 100644 index 000000000..71f7db470 --- /dev/null +++ b/bin/dd/dd_rumpops.c @@ -0,0 +1,52 @@ +/* $NetBSD: dd_rumpops.c,v 1.1 2011/02/04 19:42:12 pooka Exp $ */ + +/*- + * Copyright (c) 2010 The NetBSD Foundation, Inc. + * All rights reserved. + * + * 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. + * + * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. 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 FOUNDATION 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. + */ + +#include +#ifndef lint +__RCSID("$NetBSD: dd_rumpops.c,v 1.1 2011/02/04 19:42:12 pooka Exp $"); +#endif /* !lint */ + +#include +#include + +#include "dd.h" + +const struct ddfops ddfops_prog = { + .op_init = rumpclient_init, + + .op_open = rump_sys_open, + .op_close = rump_sys_close, + .op_fcntl = rump_sys_fcntl, + .op_ioctl = rump_sys_ioctl, + .op_fstat = rump_sys_fstat, + .op_fsync = rump_sys_fsync, + .op_ftruncate = rump_sys_ftruncate, + .op_lseek = rump_sys_lseek, + .op_read = rump_sys_read, + .op_write = rump_sys_write, +}; diff --git a/bin/dd/extern.h b/bin/dd/extern.h new file mode 100644 index 000000000..9c5902186 --- /dev/null +++ b/bin/dd/extern.h @@ -0,0 +1,82 @@ +/* $NetBSD: extern.h,v 1.22 2011/11/07 22:24:23 jym 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. + * + * @(#)extern.h 8.3 (Berkeley) 4/2/94 + */ + +#include + +#ifdef NO_CONV +__dead void block(void); +__dead void block_close(void); +__dead void unblock(void); +__dead void unblock_close(void); +#else +void block(void); +void block_close(void); +void unblock(void); +void unblock_close(void); +#endif + +#ifndef NO_MSGFMT +int dd_write_msg(const char *, int); +#endif + +void dd_out(int); +void def(void); +void def_close(void); +void jcl(char **); +void pos_in(void); +void pos_out(void); +void summary(void); +void summaryx(int); +__dead void terminate(int); +void unblock(void); +void unblock_close(void); +ssize_t bwrite(IO *, const void *, size_t); + +extern IO in, out; +extern STAT st; +extern void (*cfunc)(void); +extern uint64_t cpy_cnt; +extern uint64_t cbsz; +extern u_int ddflags; +extern u_int files_cnt; +extern uint64_t progress; +extern const u_char *ctab; +extern const u_char a2e_32V[], a2e_POSIX[]; +extern const u_char e2a_32V[], e2a_POSIX[]; +extern const u_char a2ibm_32V[], a2ibm_POSIX[]; +extern u_char casetab[]; +extern const char *msgfmt; diff --git a/bin/dd/misc.c b/bin/dd/misc.c new file mode 100644 index 000000000..0fac98bed --- /dev/null +++ b/bin/dd/misc.c @@ -0,0 +1,342 @@ +/* $NetBSD: misc.c,v 1.23 2011/11/07 22:24:23 jym 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. + */ + +#include +#ifndef lint +#if 0 +static char sccsid[] = "@(#)misc.c 8.3 (Berkeley) 4/2/94"; +#else +__RCSID("$NetBSD: misc.c,v 1.23 2011/11/07 22:24:23 jym Exp $"); +#endif +#endif /* not lint */ + +#include +#include +#include + +#include +#include +#include +#include +#include +#include +#include + +#include "dd.h" +#include "extern.h" + +#define tv2mS(tv) ((tv).tv_sec * 1000LL + ((tv).tv_usec + 500) / 1000) + +static void posix_summary(void); +#ifndef NO_MSGFMT +static void custom_summary(void); +static void human_summary(void); +static void quiet_summary(void); + +static void buffer_write(const char *, size_t, int); +#endif /* NO_MSGFMT */ + +void +summary(void) +{ + + if (progress) + (void)write(STDERR_FILENO, "\n", 1); + +#ifdef NO_MSGFMT + return posix_summary(); +#else /* NO_MSGFMT */ + if (strncmp(msgfmt, "human", sizeof("human")) == 0) + return human_summary(); + + if (strncmp(msgfmt, "posix", sizeof("posix")) == 0) + return posix_summary(); + + if (strncmp(msgfmt, "quiet", sizeof("quiet")) == 0) + return quiet_summary(); + + return custom_summary(); +#endif /* NO_MSGFMT */ +} + +static void +posix_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)); +} + +/* ARGSUSED */ +void +summaryx(int notused) +{ + + summary(); +} + +/* ARGSUSED */ +void +terminate(int signo) +{ + + summary(); + (void)raise_default_signal(signo); + _exit(127); +} + +#ifndef NO_MSGFMT +/* + * Buffer write(2) calls + */ +static void +buffer_write(const char *str, size_t size, int flush) +{ + static char wbuf[128]; + static size_t cnt = 0; /* Internal counter to allow wbuf to wrap */ + + unsigned int i; + + for (i = 0; i < size; i++) { + if (str != NULL) { + wbuf[cnt++] = str[i]; + } + if (cnt >= sizeof(wbuf)) { + (void)write(STDERR_FILENO, wbuf, cnt); + cnt = 0; + } + } + + if (flush != 0) { + (void)write(STDERR_FILENO, wbuf, cnt); + cnt = 0; + } +} + +/* + * Write summary to stderr according to format 'fmt'. If 'enable' is 0, it + * will not attempt to write anything. Can be used to validate the + * correctness of the 'fmt' string. + */ +int +dd_write_msg(const char *fmt, int enable) +{ + char hbuf[7], nbuf[32]; + const char *ptr; + int64_t mS; + struct timeval tv; + + (void)gettimeofday(&tv, NULL); + mS = tv2mS(tv) - tv2mS(st.start); + if (mS == 0) + mS = 1; + +#define ADDC(c) do { if (enable != 0) buffer_write(&c, 1, 0); } \ + while (/*CONSTCOND*/0) +#define ADDS(p) do { if (enable != 0) buffer_write(p, strlen(p), 0); } \ + while (/*CONSTCOND*/0) + + for (ptr = fmt; *ptr; ptr++) { + if (*ptr != '%') { + ADDC(*ptr); + continue; + } + + switch (*++ptr) { + case 'b': + (void)snprintf(nbuf, sizeof(nbuf), "%llu", + (unsigned long long)st.bytes); + ADDS(nbuf); + break; + case 'B': + if (humanize_number(hbuf, sizeof(hbuf), + st.bytes, "B", + HN_AUTOSCALE, HN_DECIMAL) == -1) + warnx("humanize_number (bytes transferred)"); + ADDS(hbuf); + break; + case 'e': + (void)snprintf(nbuf, sizeof(nbuf), "%llu", + (unsigned long long) (st.bytes * 1000LL / mS)); + ADDS(nbuf); + break; + case 'E': + if (humanize_number(hbuf, sizeof(hbuf), + st.bytes * 1000LL / mS, "B", + HN_AUTOSCALE, HN_DECIMAL) == -1) + warnx("humanize_number (bytes per second)"); + ADDS(hbuf); ADDS("/sec"); + break; + case 'i': + (void)snprintf(nbuf, sizeof(nbuf), "%llu", + (unsigned long long)st.in_part); + ADDS(nbuf); + break; + case 'I': + (void)snprintf(nbuf, sizeof(nbuf), "%llu", + (unsigned long long)st.in_full); + ADDS(nbuf); + break; + case 'o': + (void)snprintf(nbuf, sizeof(nbuf), "%llu", + (unsigned long long)st.out_part); + ADDS(nbuf); + break; + case 'O': + (void)snprintf(nbuf, sizeof(nbuf), "%llu", + (unsigned long long)st.out_full); + ADDS(nbuf); + break; + case 's': + (void)snprintf(nbuf, sizeof(nbuf), "%li.%03d", + (long) (mS / 1000), (int) (mS % 1000)); + ADDS(nbuf); + break; + case 'p': + (void)snprintf(nbuf, sizeof(nbuf), "%llu", + (unsigned long long)st.sparse); + ADDS(nbuf); + break; + case 't': + (void)snprintf(nbuf, sizeof(nbuf), "%llu", + (unsigned long long)st.trunc); + ADDS(nbuf); + break; + case 'w': + (void)snprintf(nbuf, sizeof(nbuf), "%llu", + (unsigned long long)st.swab); + ADDS(nbuf); + break; + case 'P': + ADDS("block"); + if (st.sparse != 1) ADDS("s"); + break; + case 'T': + ADDS("block"); + if (st.trunc != 1) ADDS("s"); + break; + case 'W': + ADDS("block"); + if (st.swab != 1) ADDS("s"); + break; + case '%': + ADDC(*ptr); + break; + default: + if (*ptr == '\0') + goto done; + errx(EXIT_FAILURE, "unknown specifier '%c' in " + "msgfmt string", *ptr); + /* NOTREACHED */ + } + } + +done: + /* flush buffer */ + buffer_write(NULL, 0, 1); + return 0; +} + +static void +custom_summary(void) +{ + + dd_write_msg(msgfmt, 1); +} + +static void +human_summary(void) +{ + (void)dd_write_msg("%I+%i records in\n%O+%o records out\n", 1); + if (st.swab) { + (void)dd_write_msg("%w odd length swab %W\n", 1); + } + if (st.trunc) { + (void)dd_write_msg("%t truncated %T\n", 1); + } + if (st.sparse) { + (void)dd_write_msg("%p sparse output %P\n", 1); + } + (void)dd_write_msg("%b bytes (%B) transferred in %s secs " + "(%e bytes/sec - %E)\n", 1); +} + +static void +quiet_summary(void) +{ + + /* stay quiet */ +} +#endif /* NO_MSGFMT */ diff --git a/bin/dd/position.c b/bin/dd/position.c new file mode 100644 index 000000000..36dd580a3 --- /dev/null +++ b/bin/dd/position.c @@ -0,0 +1,185 @@ +/* $NetBSD: position.c,v 1.18 2010/11/22 21:04:28 pooka 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. + */ + +#include +#ifndef lint +#if 0 +static char sccsid[] = "@(#)position.c 8.3 (Berkeley) 4/2/94"; +#else +__RCSID("$NetBSD: position.c,v 1.18 2010/11/22 21:04:28 pooka Exp $"); +#endif +#endif /* not lint */ + +#include +#include +#include +#include +#include + +#include +#include +#include +#include +#include + +#include "dd.h" +#include "extern.h" + +/* + * 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 (ddop_lseek(in, in.fd, + (off_t)in.offset * (off_t)in.dbsz, SEEK_CUR) == -1) { + err(EXIT_FAILURE, "%s", in.name); + /* 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 = ddop_read(in, 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; + } + errx(EXIT_FAILURE, "skip reached end of input"); + /* 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) { + + warn("%s", in.name); + warned = 1; + summary(); + } + continue; + } + err(EXIT_FAILURE, "%s", in.name); + /* NOTREACHED */ + } +} + +void +pos_out(void) +{ + struct mtop t_op; + int n; + uint64_t cnt; + + /* + * 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 (ddop_lseek(out, out.fd, + (off_t)out.offset * (off_t)out.dbsz, SEEK_SET) == -1) + err(EXIT_FAILURE, "%s", out.name); + /* 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 (ddop_ioctl(out, out.fd, MTIOCTOP, &t_op) < 0) + err(EXIT_FAILURE, "%s", out.name); + /* NOTREACHED */ + return; + } + + /* Read it. */ + for (cnt = 0; cnt < out.offset; ++cnt) { + if ((n = ddop_read(out, out.fd, out.db, out.dbsz)) > 0) + continue; + + if (n < 0) + err(EXIT_FAILURE, "%s", out.name); + /* 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 (ddop_ioctl(out, out.fd, MTIOCTOP, &t_op) == -1) + err(EXIT_FAILURE, "%s", out.name); + /* NOTREACHED */ + + while (cnt++ < out.offset) + if ((uint64_t)(n = bwrite(&out, + out.db, out.dbsz)) != out.dbsz) + err(EXIT_FAILURE, "%s", out.name); + /* NOTREACHED */ + break; + } +} diff --git a/distrib/sets/lists/minix/mi b/distrib/sets/lists/minix/mi index 54cfc7cac..0df3cdd89 100644 --- a/distrib/sets/lists/minix/mi +++ b/distrib/sets/lists/minix/mi @@ -17,6 +17,7 @@ ./bin/cp minix-sys ./bin/cpio minix-sys ./bin/date minix-sys +./bin/dd minix-sys ./bin/df minix-sys ./bin/echo minix-sys ./bin/ed minix-sys @@ -326,7 +327,7 @@ ./usr/bin/ctags minix-sys ./usr/bin/cut minix-sys ./usr/bin/datasizes minix-sys obsolete -./usr/bin/dd minix-sys +./usr/bin/dd minix-sys obsolete ./usr/bin/decomp16 minix-sys ./usr/bin/del_route minix-sys ./usr/bin/deroff minix-sys diff --git a/minix/commands/Makefile b/minix/commands/Makefile index 4b845747d..ab521ff86 100644 --- a/minix/commands/Makefile +++ b/minix/commands/Makefile @@ -6,7 +6,7 @@ SUBDIR= add_route arp at backup btrace \ cawf cdprobe \ ci cleantmp cmp co \ compress crc cron crontab \ - dd decomp16 DESCRIBE devmand devsize dhcpd \ + decomp16 DESCRIBE devmand devsize dhcpd \ dhrystone diff diskctl \ eject fbdctl \ find fix format fsck.mfs \ diff --git a/minix/commands/dd/Makefile b/minix/commands/dd/Makefile deleted file mode 100644 index d1177c82c..000000000 --- a/minix/commands/dd/Makefile +++ /dev/null @@ -1,6 +0,0 @@ -# LSC For now -NOGCCERROR:=yes -PROG= dd -MAN= - -.include diff --git a/minix/commands/dd/dd.c b/minix/commands/dd/dd.c deleted file mode 100644 index 0f30cdec3..000000000 --- a/minix/commands/dd/dd.c +++ /dev/null @@ -1,401 +0,0 @@ -/* dd - disk dumper */ - -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#define EOS '\0' -#define BOOLEAN int -#define TRUE 1 -#define FALSE 0 - -char *pch, *errorp; - -int main(int argc, char **argv); -BOOLEAN is(char *pc); -int num(void); -void puto(void); -void statistics(void); -int ulcase(int c); -void cnull(int c); -void null(int c); -void extra(void); -void over(int dummy); - -BOOLEAN is(pc) -char *pc; -{ - register char *ps = pch; - - while (*ps++ == *pc++) - if (*pc == EOS) { - pch = ps; - return(TRUE); - } - return(FALSE); -} - -#define BIGNUM 2147483647 - -int num() -{ - long ans; - register char *pc; - - pc = pch; - ans = 0L; - while ((*pc >= '0') && (*pc <= '9')) - ans = (long) ((*pc++ - '0') + (ans * 10)); - while (TRUE) switch (*pc++) { - case 'w': - ans *= 2L; - continue; - case 'b': - ans *= 512L; - continue; - case 'k': - ans *= 1024L; - continue; - case 'x': - pch = pc; - ans *= (long) num(); - case EOS: - if ((ans >= BIGNUM) || (ans < 0)) { - fprintf(stderr, "dd: argument %s out of range\n", - errorp); - exit(1); - } - return((int) ans); - } -} - -#define SWAB 0x0001 -#define LCASE 0x0002 -#define UCASE 0x0004 -#define NOERROR 0x0008 -#define SYNC 0x0010 -#define SILENT 0x0020 -#define NOTRUNC 0x0040 -#define BLANK ' ' -#define DEFAULT 512 - -unsigned cbs, bs, skip, nseek, count; -int seekseen = FALSE; -unsigned ibs = DEFAULT; -unsigned obs = DEFAULT; -unsigned files = 1; -char *ifilename = NULL; -char *ofilename = NULL; - -int convflag = 0; -int flag = 0; -int ifd, ofd, ibc; -char *ibuf, *obuf, *op; -unsigned nifull, nipartial, nofull, nopartial; -int cbc; -unsigned ntr, obc; -int ns; -char mlen[] = {64, 45, 82, 45, 83, 96, 109, 100, 109, 97, 96, 116, 108, 9}; - -void puto() -{ - int n; - - if (obc == 0) return; - if (obc == obs) - nofull++; - else - nopartial++; - if ((n = write(ofd, obuf, obc)) != obc) { - if (n == -1) { - fprintf(stderr, "dd: Write error: %s\n", strerror(errno)); - } else { - fprintf(stderr, "dd: Short write, %d instead of %d\n", n, obc); - } - exit(1); - } - obc = 0; -} - -void statistics() -{ - if (convflag & SILENT) return; - fprintf(stderr, "%u+%u records in\n", nifull, nipartial); - fprintf(stderr, "%u+%u records out\n", nofull, nopartial); - if (ntr) fprintf(stderr, "%d truncated records\n", ntr); -} - - -int main(argc, argv) -int argc; -char *argv[]; -{ -#ifdef __STDC__ - void (*convert) (int); -#else - void (*convert) (); -#endif - char *iptr; - int i, j, oflags; - - convert = null; - argc--; - argv++; - while (argc-- > 0) { - pch = *(argv++); - if (is("ibs=")) { - errorp = pch; - ibs = num(); - continue; - } - if (is("obs=")) { - errorp = pch; - obs = num(); - continue; - } - if (is("bs=")) { - errorp = pch; - bs = num(); - continue; - } - if (is("if=")) { - ifilename = pch; - continue; - } - if (is("of=")) { - ofilename = pch; - continue; - } - if (is("skip=")) { - errorp = pch; - skip = num(); - continue; - } - if (is("seek=")) { - errorp = pch; - nseek = num(); - seekseen = TRUE; - continue; - } - if (is("count=")) { - errorp = pch; - count = num(); - continue; - } - if (is("files=")) { - errorp = pch; - files = num(); - continue; - } - if (is("length=")) { - errorp = pch; - for (j = 0; j < 13; j++) mlen[j]++; - write(2, mlen, 14); - continue; - } - if (is("conv=")) { - while (*pch != EOS) { - if (is("lcase")) { - convflag |= LCASE; - continue; - } - if (is("ucase")) { - convflag |= UCASE; - continue; - } - if (is("noerror")) { - convflag |= NOERROR; - continue; - } - if (is("notrunc")) { - convflag |= NOTRUNC; - continue; - } - if (is("sync")) { - convflag |= SYNC; - continue; - } - if (is("swab")) { - convflag |= SWAB; - continue; - } - if (is("silent")) { - convflag |= SILENT; - continue; - } - if (is(",")) continue; - fprintf(stderr, "dd: bad argument: %s\n", - pch); - exit(1); - } - if (*pch == EOS) continue; - } - fprintf(stderr, "dd: bad argument: %s\n", pch); - exit(1); - } - if ((convert == null) && (convflag & (UCASE | LCASE))) convert = cnull; - if ((ifd = ((ifilename) ? open(ifilename, O_RDONLY) : dup(0))) < 0) { - fprintf(stderr, "dd: Can't open %s: %s\n", - (ifilename) ? ifilename : "stdin", strerror(errno)); - exit(1); - } - oflags = O_WRONLY | O_CREAT; - if (!seekseen && (convflag & NOTRUNC) != NOTRUNC) - oflags |= O_TRUNC; - if ((ofd = ((ofilename) ? open(ofilename, oflags, 0666) - : dup(1))) < 0) { - fprintf(stderr, "dd: Can't open %s: %s\n", - (ofilename) ? ofilename : "stdout", strerror(errno)); - exit(1); - } - if (bs) { - ibs = obs = bs; - if (convert == null) flag++; - } - if (ibs == 0) { - fprintf(stderr, "dd: ibs cannot be zero\n"); - exit(1); - } - if (obs == 0) { - fprintf(stderr, "dd: obs cannot be zero\n"); - exit(1); - } - if ((ibuf = sbrk(ibs)) == (char *) -1) { - fprintf(stderr, "dd: not enough memory\n"); - exit(1); - } - if ((obuf = (flag) ? ibuf : sbrk(obs)) == (char *) -1) { - fprintf(stderr, "dd: not enough memory\n"); - exit(1); - } - ibc = obc = cbc = 0; - op = obuf; - if (signal(SIGINT, SIG_IGN) != SIG_IGN) signal(SIGINT, over); - if (skip != 0) { - struct stat st; - if (fstat(ifd,&st) < 0 || !(S_ISREG(st.st_mode) || S_ISBLK(st.st_mode)) - || lseek(ifd, (off_t) ibs * (off_t) skip, SEEK_SET) == (off_t) -1) { - do { - if (read(ifd, ibuf, ibs) == -1) { - fprintf(stderr, - "dd: Error skipping input: %s\n", - strerror(errno)); - exit(1); - } - } while (--skip != 0); - } - } - if (nseek != 0) { - if (lseek(ofd, (off_t) obs * (off_t) nseek, SEEK_SET) == (off_t) -1) { - fprintf(stderr, "dd: Seeking on output failed: %s\n", - strerror(errno)); - exit(1); - } - } - -outputall: - if (ibc-- == 0) { - ibc = 0; - if ((count == 0) || ((nifull + nipartial) != count)) { - if (convflag & (NOERROR | SYNC)) - for (iptr = ibuf + ibs; iptr > ibuf;) *--iptr = 0; - ibc = read(ifd, ibuf, ibs); - } - if (ibc == -1) { - fprintf(stderr, "dd: Read error: %s\n", strerror(errno)); - if ((convflag & NOERROR) == 0) { - puto(); - over(0); - } - ibc = 0; - for (i = 0; i < ibs; i++) - if (ibuf[i] != 0) ibc = i; - statistics(); - } - if ((ibc == 0) && (--files <= 0)) { - puto(); - over(0); - } - if (ibc != ibs) { - nipartial++; - if (convflag & SYNC) ibc = ibs; - } else - nifull++; - iptr = ibuf; - i = ibc >> 1; - if ((convflag & SWAB) && i) do { - int temp; - temp = *iptr++; - iptr[-1] = *iptr; - *iptr++ = temp; - } while (--i); - iptr = ibuf; - if (flag) { - obc = ibc; - puto(); - ibc = 0; - } - goto outputall; - } - i = *iptr++ & 0377; - (*convert) (i); - goto outputall; -} - -int ulcase(c) -int c; -{ - int ans = c; - - if ((convflag & UCASE) && (c >= 'a') && - (c <= 'z')) - ans += 'A' - 'a'; - if ((convflag & LCASE) && (c >= 'A') && - (c <= 'Z')) - ans += 'a' - 'A'; - return(ans); -} - -void cnull(c) -int c; -{ - c = ulcase(c); - null(c); -} - -void null(c) -int c; -{ - *op++ = c; - if (++obc >= obs) { - puto(); - op = obuf; - } -} - -void extra() -{ - if (++cbc >= cbs) { - null('\n'); - cbc = 0; - ns = 0; - } -} - -void over(sig) -int sig; -{ - statistics(); - if (sig != 0) { - signal(sig, SIG_DFL); - raise(sig); - } - exit(0); -} diff --git a/minix/man/man1/Makefile b/minix/man/man1/Makefile index 4a4d52dbc..48d0af706 100644 --- a/minix/man/man1/Makefile +++ b/minix/man/man1/Makefile @@ -1,7 +1,7 @@ MAN= at.1 \ bsfilt.1 cawf.1 chgrp.1 \ cmp.1 compress.1 \ - crc.1 crontab.1 dd.1 \ + crc.1 crontab.1 \ dhrystone.1 dosdir.1 dosread.1 doswrite.1 \ eject.1 \ flexdoc.1 format.1 \ diff --git a/minix/man/man1/dd.1 b/minix/man/man1/dd.1 deleted file mode 100644 index fcf15e2f6..000000000 --- a/minix/man/man1/dd.1 +++ /dev/null @@ -1,70 +0,0 @@ -.TH DD 1 -.SH NAME -dd \- convert and copy a file -.SH SYNOPSIS -\fBdd\fR [\fIoption = value\fR] ...\fR -.br -.de FL -.TP -\\fB\\$1\\fR -\\$2 -.. -.de EX -.TP 20 -\\fB\\$1\\fR -# \\$2 -.. -.SH EXAMPLES -.TP 20 -.B dd if=/dev/fd0 of=/dev/fd1 -# Copy disk 0 to disk 1 -.TP 20 -.B dd if=x of=y bs=1w skip=4 -# Copy \fIx\fP to \fIy\fP, skipping 4 words -.TP 20 -.B dd if=x of=y count=3 -# Copy three 512\-byte blocks -.SH DESCRIPTION -.PP -This command is intended for copying partial files. -The block size, skip count, and number of blocks to copy can be specified. -The options are: -.PP -.ta 0.25i 1.5i - \fBif\fR = file \- Input file (default is \fIstdin\fR) -.br - \fBof\fR = file \- Output file (default is standard output) -.br - \fBibs\fR = n \- Input block size (default 512 bytes) -.br - \fBobs\fR = n \- Output block size (default is 512 bytes) -.br - \fBbs\fR = n \- Block size; sets \fIibs\fP and \fIobs\fP (default is 512 bytes) -.br - \fBskip\fR = n \- Skip \fIn\fP input blocks before reading -.br - \fBseek\fR = n \- Skip \fIn\fP output blocks before writing -.br - \fBcount\fR = n \- Copy only \fIn\fP input blocks -.br - \fBconv = lcase\fR \- Convert upper case letters to lower case -.br - \fBconv = ucase\fR \- Convert lower case letters to upper case -.br - \fBconv = swab\fR \- Swap every pair of bytes -.br - \fBconv = noerror\fR \- Ignore errors and just keep going -.br - \fBconv = notrunc\fR \- Do not truncate unmodified blocks -.br - \fBconv = silent\fR \- Suppress statistics (MINIX 3 specific flag) -.PP -Where sizes are expected, they are in bytes. -However, the letters \fBw\fR, \fBb\fR, or \fBk\fR may be appended to the -number to indicate words (2 bytes), blocks (512 bytes), or K -(1024 bytes), respectively. -When -.I dd -is finished, it reports the number of full and partial blocks read and written. -.SH "SEE ALSO" -.BR vol (1).