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fdatasync: minor improvements

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Picks up some ideas by Paul Eggert from here:
https://lists.gnu.org/archive/html/bug-coreutils/2011-07/msg00157.html

* modules/fdatasync (Depends-on): Add condition for fsync.
* lib/fdatasync.c (fdatasync): Add comment.
* tests/test-unistd-c++.cc: Test fdatasync.

Signed-off-by: Eric Blake <eblake@redhat.com>
This commit is contained in:
Eric Blake
2011-09-16 12:47:13 -06:00
parent f406ad994a
commit 1500d77252
4 changed files with 12 additions and 1 deletions
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5
ChangeLog
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@@ -1,5 +1,10 @@
2011-09-16 Eric Blake <eblake@redhat.com> 2011-09-16 Eric Blake <eblake@redhat.com>
fdatasync: minor improvements
* modules/fdatasync (Depends-on): Add condition for fsync.
* lib/fdatasync.c (fdatasync): Add comment.
* tests/test-unistd-c++.cc: Test fdatasync.
unistd: update refs to newer POSIX unistd: update refs to newer POSIX
* lib/unistd.in.h: Prefer POSIX 2008 over 2001. * lib/unistd.in.h: Prefer POSIX 2008 over 2001.
Suggested by Bruno Haible. Suggested by Bruno Haible.

2
lib/fdatasync.c
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@@ -21,5 +21,7 @@
int int
fdatasync (int fd) fdatasync (int fd)
{ {
/* This does more work than strictly necessary, but is the best we
can do portably. */
return fsync (fd); return fsync (fd);
} }

2
modules/fdatasync
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@@ -6,7 +6,7 @@ lib/fdatasync.c
m4/fdatasync.m4 m4/fdatasync.m4
Depends-on: Depends-on:
fsync fsync [test $HAVE_FDATASYNC = 0]
unistd unistd
configure.ac: configure.ac:

4
tests/test-unistd-c++.cc
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@@ -60,6 +60,10 @@ SIGNATURE_CHECK (GNULIB_NAMESPACE::fchownat, int,
(int, char const *, uid_t, gid_t, int)); (int, char const *, uid_t, gid_t, int));
#endif #endif
#if GNULIB_TEST_FDATASYNC
SIGNATURE_CHECK (GNULIB_NAMESPACE::fdatasync, int, (int));
#endif
#if GNULIB_TEST_FSYNC #if GNULIB_TEST_FSYNC
SIGNATURE_CHECK (GNULIB_NAMESPACE::fsync, int, (int)); SIGNATURE_CHECK (GNULIB_NAMESPACE::fsync, int, (int));
#endif #endif