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aa7a161b40
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Thomas Quinot aa7a161b40 (dd_out): Fix handling of all-zeroes block at end of input with 
conv=sparse.

This change fixes two separate issues observed when the last output
block is all zeroes, and conv=sparse is in use. In this case, care
must be taken to roll back the last seek and write the entire last zero
block at the original offset where it should have occurred: when the
destination file is a block device, it is not possible to roll back
by just one character as the write would then not be properly aligned.

Furthermore, the buffer used to write this last all-zeroes block
needs to be properly zeroed-out. This was not the case previously,
resulting in a junk data byte appearing instead of a zero in the
output stream.

PR:		bin/189174
PR:		bin/189284
Reviewed by:	kib
MFC after:	2 weeks
2014-05-07 19:33:29 +00:00
..
cat Close the newly-created FD if the pathname is too long. 2014-01-11 15:01:30 +00:00
chflags Expand the use of stat(2) flags to allow storing some Windows/DOS 2013-08-21 23:04:48 +00:00
chio Update chio(1) and ch(4) to support reporting element designators. 2013-04-19 20:03:51 +00:00
chmod Update sticky(7) cross references. 2011-05-13 16:29:57 +00:00
cp Add a few examples. 2013-03-15 20:12:54 +00:00
csh Use src.opts.mk in preference to bsd.own.mk except where we need stuff 2014-05-06 04:22:01 +00:00
date Use src.opts.mk in preference to bsd.own.mk except where we need stuff 2014-05-06 04:22:01 +00:00
dd (dd_out): Fix handling of all-zeroes block at end of input with 2014-05-07 19:33:29 +00:00
df -h and -H options backwards in manual page. 2014-01-16 17:06:02 +00:00
domainname Point users towards nisdomainname and rc.conf. 2013-04-22 17:55:12 +00:00
echo echo(1): Clarify portability and mention literal "--" handling. 2010-11-12 22:43:40 +00:00
ed Use src.opts.mk in preference to bsd.own.mk except where we need stuff 2014-05-06 04:22:01 +00:00
expr Add the Clang specific -Wmissing-variable-declarations to WARNS=6. 2013-04-19 19:45:00 +00:00
freebsd-version Remove extraneous \n. 2013-10-11 20:10:18 +00:00
getfacl Fix warnings found by -Wmising-variable-declarations. 2012-10-19 05:43:38 +00:00
hostname Mark usage() __dead2 2013-04-28 22:52:43 +00:00
kenv Constify parameters, no functional or binary change. 2013-05-15 18:38:28 +00:00
kill sh: Allow kill %job on jobs started without job control. 2014-03-15 14:58:48 +00:00
ln Add 'static' where able. 2013-06-02 17:55:00 +00:00
ls Use src.opts.mk in preference to bsd.own.mk except where we need stuff 2014-05-06 04:22:01 +00:00
mkdir Add missing static qualifiers 2013-04-27 21:59:43 +00:00
mv Use src.opts.mk in preference to bsd.own.mk except where we need stuff 2014-05-06 04:22:01 +00:00
pax Use src.opts.mk in preference to bsd.own.mk except where we need stuff 2014-05-06 04:22:01 +00:00
pkill Use src.opts.mk in preference to bsd.own.mk except where we need stuff 2014-05-06 04:22:01 +00:00
ps Add -J to filter by matching jail IDs and names. 2014-05-02 15:05:47 +00:00
pwait Use a different way to silence clang analyzer as done in r245494 by 2013-01-16 18:15:25 +00:00
pwd
rcp Fix warnings found by -Wmising-variable-declarations. 2012-10-19 05:43:38 +00:00
realpath Make `realpath'' behave like `realpath .''. 2011-06-21 19:34:57 +00:00
rm Add two more 'static' qualifiers 2013-04-26 17:56:35 +00:00
rmail Bump WARNS where possible. 2010-02-15 14:07:40 +00:00
rmdir Add a few examples. 2013-03-15 20:12:54 +00:00
setfacl Mention that read_attributes, write_attributes, read_acl and write_acl 2013-04-01 13:17:28 +00:00
sh Use src.opts.mk in preference to bsd.own.mk except where we need stuff 2014-05-06 04:22:01 +00:00
sleep sleep: Explain in a comment why the [EINTR] check is there. 2013-06-05 20:15:18 +00:00
stty stty: Mark usage() __dead2. 2012-07-15 21:12:22 +00:00
sync
test Use src.opts.mk in preference to bsd.own.mk except where we need stuff 2014-05-06 04:22:01 +00:00
tests Migrate tools/regression/bin/ tests to the new layout. 2013-12-11 04:09:17 +00:00
uuidgen Mention the upper hard limit for -n option. Patch slightly modified 2012-05-23 16:19:19 +00:00
Makefile Use src.opts.mk in preference to bsd.own.mk except where we need stuff 2014-05-06 04:22:01 +00:00
Makefile.inc Use src.opts.mk in preference to bsd.own.mk except where we need stuff 2014-05-06 04:22:01 +00:00