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author | Pádraig Brady <P@draigBrady.com> | 2011-02-22 21:14:00 +0000 |
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committer | Pádraig Brady <P@draigBrady.com> | 2011-03-05 02:33:53 +0000 |
commit | 5f3115535b32a9c0cc5aee5cf5b4001f684ad56e (patch) | |
tree | 601be66ec898ecbd0276d7258191c5468c775a6b /tests/Makefile.am | |
parent | 433a7c614f0fbce3ba3346409af847d82670d284 (diff) | |
download | coreutils-5f3115535b32a9c0cc5aee5cf5b4001f684ad56e.tar.xz |
dd: add a flag to discard cached data
* src/dd.c (FFS_MASK): A new macro (Find First Set) refactored
from the following enum as it's now used twice.
(usage): Mention the new 'nocache' flag.
(cache_round): A new function to help ignore requests
to drop cache, that are less than page_size.
(invalidate_cache): A new function to call posix_fadvise()
with the appropriate offset and length. Note we don't
use fdadvise() so we can detect errors when count=0.
(dd_copy): Call invalidate_cache() for the portions read.
(iwrite): Likewise for the portions written.
(main): Call invalidate_cache for page_size slop or
for full file when count=0.
* cfg.mk (sc_dd_O_FLAGS): Adjust to pass.
* doc/coreutils.texi (dd invocation): Describe the 'nocache' flag,
and give some examples of how it can be used.
* tests/dd/nocache: A new test.
* tests/Makefile.am: Reference the new test.
* NEWS: Mention the new feature.
Diffstat (limited to 'tests/Makefile.am')
-rw-r--r-- | tests/Makefile.am | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/tests/Makefile.am b/tests/Makefile.am index 28eafe8ae..99b46e8e8 100644 --- a/tests/Makefile.am +++ b/tests/Makefile.am @@ -352,6 +352,7 @@ TESTS = \ df/unreadable \ dd/direct \ dd/misc \ + dd/nocache \ dd/not-rewound \ dd/reblock \ dd/skip-seek \ |