CVS commit: src/bin/dd

["Robert Elz" <kre%netbsd.org@localhost>]

Module Name:    src
Committed By:   kre
Date:           Mon Jan 26 08:37:29 UTC 2026

Modified Files:
        src/bin/dd: args.c dd.1 dd.c

Log Message:
PR bin/59942 Fix handling of count=0

Apply (modified) patch from Andrus Suvalau in PR bin/59942
(The actual change is very simple)

This looks to have been broken since version 1.1 - simply short
circuiting processing because count==0 is wrong, there is much
else that needs to be done before copying nothing (including
verifying args that follow it).

It is almost certain that files=0 will need a similar change.
That one looks like it will be even easier - simply deleting
the test for files_cnt being 0 in args.c/f_files() should be
enough I believe - but as I haven't seen any system with a
tape drive in decades, I am unable to test any changes properly,
so I will leave that to someone who can test it properly.


To generate a diff of this commit:
cvs rdiff -u -r1.43 -r1.44 src/bin/dd/args.c
cvs rdiff -u -r1.38 -r1.39 src/bin/dd/dd.1
cvs rdiff -u -r1.53 -r1.54 src/bin/dd/dd.c

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.