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posix: fs: implement fdatasync()

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`fdatasync()` is basically equivalent to `fsync()` according
to the standards.

Added test for it.

Signed-off-by: Yong Cong Sin <ycsin@meta.com>
This commit is contained in:
Yong Cong Sin 2024-06-17 13:39:19 +08:00 • committed by Carles Cufí
commit 91abf0e329
5 changed files with 50 additions and 2 deletions
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37
tests/posix/fs/src/test_fs_file.c
View file

@ -159,6 +159,26 @@ static int test_file_fsync(void)
return res;
}
#ifdef CONFIG_POSIX_SYNCHRONIZED_IO
static int test_file_fdatasync(void)
{
int res = 0;
if (file < 0)
return res;
res = fdatasync(file);
if (res < 0) {
TC_ERROR("Failed to sync file: %d, errno = %d\n", res, errno);
res = TC_FAIL;
}
close(file);
file = -1;
return res;
}
#endif /* CONFIG_POSIX_SYNCHRONIZED_IO */
static int test_file_truncate(void)
{
int res = 0;
@ -251,6 +271,23 @@ ZTEST(posix_fs_file_test, test_fs_sync)
zassert_true(test_file_fsync() == TC_PASS);
}
/**
* @brief Test for POSIX fdatasync API
*
* @details Test sync the file through POSIX fdatasync API.
*/
ZTEST(posix_fs_file_test, test_fs_datasync)
{
#ifdef CONFIG_POSIX_SYNCHRONIZED_IO
/* FIXME: restructure tests as per #46897 */
zassert_true(test_file_open() == TC_PASS);
zassert_true(test_file_write() == TC_PASS);
zassert_true(test_file_fdatasync() == TC_PASS);
#else
ztest_test_skip();
#endif
}
/**
* @brief Test for POSIX ftruncate API
*

2
tests/posix/headers/src/unistd_h.c
View file

@ -230,7 +230,7 @@ ZTEST(posix_headers, test_unistd_h)
/* zassert_not_null(fchdir); */ /* not implemented */
/* zassert_not_null(fchown); */ /* not implemented */
/* zassert_not_null(fchownat); */ /* not implemented */
/* zassert_not_null(fdatasync); */ /* not implemented */
zassert_not_null(fdatasync);
/* zassert_not_null(fexecve); */ /* not implemented */
/* zassert_not_null(fork); */ /* not implemented */
/* zassert_not_null(fpathconf); */ /* not implemented */