Commit general cleanups (separate get_num() and get_off_t() functions to
debogosify some of the command-line string-number conversions into
an unsigned and signed variant.)

Allow negative seek offsets for files that can be seeked upon. It
makes dd(1) a more complete "filter", even if this functionality is
limited to seekable streams.

Various cleanups are made to reduce warnings and make code prettier :)
Also, check for ftruncate() return value and die on failure, but only
try to ftruncate() when the file is a regular file.

Add iseek= and oseek= aliases for the preexisting skip= and seek=
operands. Can _YOU_ tell skip= and seek= apart with 100% accuracy
every time?

This also seems to make us option-for-option compatib

Add iseek= and oseek= aliases for the preexisting skip= and seek=
operands. Can _YOU_ tell skip= and seek= apart with 100% accuracy
every time?

This also seems to make us option-for-option compatible with the
Solaris dd(1).

Approved by: jkh
Suggested by: peter

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I've been Brucified! I did evil things with typedefs, but I'll do it
the correct (but less aesthetic) way, now. New lesson: correctness
and aestheticity may be mutually exclusive at times.

Brucifi

I've been Brucified! I did evil things with typedefs, but I'll do it
the correct (but less aesthetic) way, now. New lesson: correctness
and aestheticity may be mutually exclusive at times.

Brucified by: bde

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Do proper constification in args.c. This shuts up -Wcast-qual (thanks,
bfumerola for that pointer!) in GCC complaining about losing a const.

While I'm here, might as well mark in the Makefile that

Do proper constification in args.c. This shuts up -Wcast-qual (thanks,
bfumerola for that pointer!) in GCC complaining about losing a const.

While I'm here, might as well mark in the Makefile that I'm the
${MAINTAINER}. It seems like that's what everyone's doing these days.

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Make count=0 set cpy_cnt to -1, which is slight overloading, but makes
what I was trying to do work much better (ie at all. I could have sworn
it was working...) Fix a SEEK_SET to be SEEK_CUR, and m

Make count=0 set cpy_cnt to -1, which is slight overloading, but makes
what I was trying to do work much better (ie at all. I could have sworn
it was working...) Fix a SEEK_SET to be SEEK_CUR, and make Bruce's
lseek() test work correctly.

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Let count=-something fail, while count=0 may succeed, thus making dd(1)
useful as a seeking-tool as well as its many other uses. Previously,
dd(1) would succeed with count=0, but wouldn't get to the

Let count=-something fail, while count=0 may succeed, thus making dd(1)
useful as a seeking-tool as well as its many other uses. Previously,
dd(1) would succeed with count=0, but wouldn't get to the point that
blocks were to be read/written. This is a more useful behavior, and
this specific case doesn't seem to be handled by POSIX.

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Even more dd(1) cleanups! Thanks to Bruce for staying on my case until
we're done (not yet!) :)

Even more cleanups to dd(1). This is probably the culmination of the
BDEification process of dd(1). Most of the changes are from BDE's archive.
Support for negative offsets is gone again, but the cas

Even more cleanups to dd(1). This is probably the culmination of the
BDEification process of dd(1). Most of the changes are from BDE's archive.
Support for negative offsets is gone again, but the case where you
lseek() onto byte -1 of something from a negative offset using seek/skip
is fixed; if you end up on -1, you won't get a false positive lseek failure.
The biggest changes are to data types (more size_t, for instance) and
argument parsing. skip/seek on /dev/{,k}mem now occurs (instead of "read
until you reach the offset") due to mem devices now being D_DISK. Some
const things are now correctly declared as such, and the "case table"
building is better. The only thing that seems to be left to make dd(1)
everything TOG wants it to be is l10n.

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Make a bit more headway with dd's argument parsing, etc. get_bsz() is
renamed get_num() since it's not just about block sizes. skip and
seek can be any offset, including negative, now. Some style bog

Make a bit more headway with dd's argument parsing, etc. get_bsz() is
renamed get_num() since it's not just about block sizes. skip and
seek can be any offset, including negative, now. Some style bogons are fixed.

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$Id$ -> $FreeBSD$

This is the second round of dd(1) changes. Some changes made/reversed by
request of Bruce. More changes may follow later. 'g' multiplier has
been added (i.e. dd seek=5g if=bigfile.) Some minor correc

This is the second round of dd(1) changes. Some changes made/reversed by
request of Bruce. More changes may follow later. 'g' multiplier has
been added (i.e. dd seek=5g if=bigfile.) Some minor corrections were made
as well.

Noticed by: bde

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Miscellaneous dd(1) changes: mainly fixing variable types (size_t, ssize_t,
off_t, int, u_int64_t, etc.). dd(1) should now work properly with REALLY
big amounts of data.

Various spelling/formatting changes.

Submitted by: Philippe Charnier <charnier@xp11.frmug.org>

Restore Lite-2 sccsid. Restore include of sys/types.h.

Correct use of .Nm and other cosmetics. Add rcsid. Remove unused #inc.

Sort "sparse" into alphabetical order, since dd's `conv' options need
to be sorted. This temporarily broke the "osync" option.

Teach dd(1) about an option to write sparse files. Can be useful for
things like diskless clients' swap files etc.

Submitted by: pascal@zuo.dec.com (Pascal Pederiva) (ages ago, with many
st

Teach dd(1) about an option to write sparse files. Can be useful for
things like diskless clients' swap files etc.

Submitted by: pascal@zuo.dec.com (Pascal Pederiva) (ages ago, with many
stylistic changes by me)

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Slightly improved fix compared to my insiration

don't munge argv strings -- copy them first. avoids 'w' showing:
deraadt p8 zeus.theos.com 8:26AM 3 dd if of bs

Obtained from: OpenBSD (f

Slightly improved fix compared to my insiration

don't munge argv strings -- copy them first. avoids 'w' showing:
deraadt p8 zeus.theos.com 8:26AM 3 dd if of bs

Obtained from: OpenBSD (file rev 1.3) by Theo de Raadt <deraadt@openbsd.org>

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Revert $FreeBSD$ to $Id$

Make the long-awaited change from $Id$ to $FreeBSD$

This will make a number of things easier in the future, as well as (finally!)
avoiding the Id-smashing problem which has plagued developers for so

Make the long-awaited change from $Id$ to $FreeBSD$

This will make a number of things easier in the future, as well as (finally!)
avoiding the Id-smashing problem which has plagued developers for so long.

Boy, I'm glad we're not using sup anymore. This update would have been
insane otherwise.

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-Wall cleaning.

Bruce says: "You have been programming in the kernel for too long :-)."

and he's right ... I forgot about this floating point stuff you can
use in user-land :-)

Increase precision of duration to mi

Bruce says: "You have been programming in the kernel for too long :-)."

and he's right ... I forgot about this floating point stuff you can
use in user-land :-)

Increase precision of duration to microseconds.
No heuristics to avoid overflow in calculation needed - just depend
on DBL_MAX being a bit larger than LONG_MAX.

Use double instead of `struct timeval' in dd.h so that everything
doesn't have to include <sys/time.h>.

Fixed style bugs in recent and old FreeBSD changes.

Reviewed by: phk
Submitted by: bde

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Increase precision of duration to milliseconds.
Some heuristics to avoid overflow in calculation attempted.