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dd: add 'oflag=seek_bytes'

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Allow specifying position in the output file in bytes instead of
obs-sized blocks, improve compatibility with GNU dd.

function                                             old     new   delta
dd_main                                             1632    1693     +61
packed_usage                                       33130   33150     +20
static.oflag_words                                     -      12     +12
------------------------------------------------------------------------------
(add/remove: 1/0 grow/shrink: 2/0 up/down: 93/0)               Total: 93 bytes

Signed-off-by: Rostislav Skudnov <rostislav@tuxera.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Rostislav Skudnov
2018-10-15 10:26:15 +00:00
committed by Denys Vlasenko
parent f3e2838fc4
commit 3f6a978a0d
2 changed files with 25 additions and 9 deletions
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docs/posix_conformance.txt
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@@ -182,6 +182,7 @@ dd compatibility options:
conv=fsync | yes | |
iflag=skip_bytes| yes | |
iflag=fullblock | yes | |
oflag=seek_bytes| yes | |
df POSIX options
option | exists | compliant | remarks