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Re: [PATCH 2/2] tests/9pfs: fix coverity error in create_local_test_dir(
From: |
Greg Kurz |
Subject: |
Re: [PATCH 2/2] tests/9pfs: fix coverity error in create_local_test_dir() |
Date: |
Fri, 30 Oct 2020 12:44:18 +0100 |
On Fri, 30 Oct 2020 09:19:46 +0100
Christian Schoenebeck <qemu_oss@crudebyte.com> wrote:
> Coverity wants the return value of mkdir() to be checked, so let's
> pretend to do that. We're actually just making a dummy check and
> ignore the result, because we actually only care if the required
> directory exists and we have an existence check for that in place
> already.
>
I see that sometimes changelog shows a copy of the original
coverity report (e.g. commit df1a312fea58).
> Reported-by: Greg Kurz <groug@kaod.org>
Please give credits to coverity, not me :-)
And most importantly, we want to mention the CID in the changelog.
e.g.
Reported-by: Coverity (CID 1435963)
> Signed-off-by: Christian Schoenebeck <qemu_oss@crudebyte.com>
> ---
> tests/qtest/libqos/virtio-9p.c | 6 +++++-
> 1 file changed, 5 insertions(+), 1 deletion(-)
>
> diff --git a/tests/qtest/libqos/virtio-9p.c b/tests/qtest/libqos/virtio-9p.c
> index 6b22fa0e9a..0a7c0ee5d8 100644
> --- a/tests/qtest/libqos/virtio-9p.c
> +++ b/tests/qtest/libqos/virtio-9p.c
> @@ -48,9 +48,13 @@ static void init_local_test_path(void)
> static void create_local_test_dir(void)
> {
> struct stat st;
> + int res;
>
> g_assert(local_test_path != NULL);
> - mkdir(local_test_path, 0777);
> + res = mkdir(local_test_path, 0777);
> + if (res < 0) {
> + /* ignore error, dummy check to prevent error by coverity */
Why not printing an error message with errno there like you did in
the previous patch ?
> + }
>
> /* ensure test directory exists now ... */
> g_assert(stat(local_test_path, &st) == 0);