On Wed, Jul 12, 2017 at 10:39:23AM -0700, Darrick J. Wong wrote:
> Check that we get -ENXIO if the user calls SEEK_HOLE/SEEK_DATA with
> a negative file offset.
A minor nit, this might be confusing, lseek returns -1 on error, and set
errno to ENXIO, no one actually returns -ENXIO.
>
> Signed-off-by: Darrick J. Wong <darrick.wong@xxxxxxxxxx>
> ---
> src/seek_sanity_test.c | 25 +++++++++++++++++
> tests/generic/702 | 70 ++++++++++++++++++++++++++++++++++++++++++++++++
> tests/generic/702.out | 2 +
> tests/generic/group | 1 +
> 4 files changed, 98 insertions(+)
> create mode 100755 tests/generic/702
> create mode 100644 tests/generic/702.out
>
> diff --git a/src/seek_sanity_test.c b/src/seek_sanity_test.c
> index a58ec36..547f0a4 100644
> --- a/src/seek_sanity_test.c
> +++ b/src/seek_sanity_test.c
> @@ -274,6 +274,30 @@ static int huge_file_test(int fd, int testnum, off_t filsz)
> return ret;
> }
>
> +/* Make sure we get ENXIO if we pass in a negative offset. */
> +static int test18(int fd, int testnum)
> +{
> + int ret = 0;
> + off_t pos;
> +
> + errno = 0;
> + pos = lseek(fd, -1, SEEK_HOLE);
> + if (pos != -1 || errno != ENXIO) {
> + printf("%02d.1 SEEK_HOLE expected -1 with errno %d, got %jd and %d.\n",
> + testnum, -ENXIO, pos, -errno);
> + ret++;
> + }
> +
> + errno = 0;
> + pos = lseek(fd, -1, SEEK_DATA);
> + if (pos != -1 || errno != ENXIO) {
> + printf("%02d.1 SEEK_DATA expected -1 with errno %d, got %jd and %d.\n",
> + testnum, -ENXIO, pos, -errno);
> + ret++;
> + }
> + return ret;
Seems cleaner to use do_lseek() helper, e.g.
static int test18(int fd, int testnum)
{
int ret = 0;
/* file size doesn't matter in this test, set to 0 */
ret += do_lseek(testnum, 1, fd, 0, SEEK_HOLE, -1, -1);
ret += do_lseek(testnum, 2, fd, 0, SEEK_DATA, -1, -1);
return ret;
}
And test reports "succ" or "FAIL" as what other subtests do
18. Test file with negative SEEK_{HOLE,DATA} offsets
18.01 SEEK_HOLE expected -1 or -1, got 0. FAIL
18.02 SEEK_DATA expected -1 with errno -6, got -1. FAIL
Thanks,
Eryu
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