[SSSD] [PATCHES] check return value

Sumit Bose sbose at redhat.com
Thu Apr 10 09:11:51 UTC 2014


On Thu, Apr 10, 2014 at 10:34:10AM +0200, Pavel Reichl wrote:
> On Wed, 2014-04-09 at 21:19 +0200, Sumit Bose wrote:
> > On Wed, Apr 09, 2014 at 07:27:28PM +0200, Pavel Reichl wrote:
> > > On Mon, 2014-04-07 at 18:13 +0200, Sumit Bose wrote:
> > > > On Mon, Apr 07, 2014 at 02:22:04PM +0200, Pavel Reichl wrote:
> > > > > Hello,
> > > > > 
> > > > > I noticed these two warnings in clang.
> > > > > 
> > > > > It would be great if the 2nd patch could be checked by Sumit to make
> > > > > sure that the return value wasn't ignored on purpose.
> > > > 
> > > > yes, I would prefer to ignore errors here. There might be various cases
> > > > were we are not able to resolve a single SID but still can proceed with
> > > > the others.
> > > 
> > > Please see attached patch. Feel free to NACK it, if you think it's more
> > > pain than gain.
> > 
> > Why not do something useful to avoid the compiler warning and print a
> > SSSDBG_TRACE_ALL debug message with the returned error code in the case
> > of an error?
> 
> Hello Sumit, 
> 
> I just took your previous response too literally - "I would prefer to
> ignore errors here" - my bad.  (Hopefully final) patch attached.

Thank you. ACK

I wonder if the explicit (unsigned int) casts are needed to avoid
warnings or if you are just calling them to be on the safe side?

bye,
Sumit

> 
> Pavel Reichl

> From eb7bff126d870b2484bcfccf1983a00783985c0b Mon Sep 17 00:00:00 2001
> From: Pavel Reichl <preichl at redhat.com>
> Date: Wed, 9 Apr 2014 18:00:56 +0100
> Subject: [PATCH 2/2] PAC: fix clang warning
> 
> Return value of sss_dp_get_account_recv is checked and logging is done accordingly.
> ---
>  src/responder/pac/pacsrv_cmd.c | 8 ++++++++
>  1 file changed, 8 insertions(+)
> 
> diff --git a/src/responder/pac/pacsrv_cmd.c b/src/responder/pac/pacsrv_cmd.c
> index 00cdf608bef2be1543a15cee4ae02c78c3bc9f8e..cf631ff360728a1be21f7cec4128b4d57e0d3a08 100644
> --- a/src/responder/pac/pacsrv_cmd.c
> +++ b/src/responder/pac/pacsrv_cmd.c
> @@ -1094,6 +1094,14 @@ static void pac_lookup_sids_next_done(struct tevent_req *subreq)
>      ret = sss_dp_get_account_recv(req, subreq,
>                                    &err_maj, &err_min,
>                                    &err_msg);
> +    if (ret != EOK) {
> +        DEBUG(SSSDBG_OP_FAILURE,
> +              "Unable to get information from Data Provider\n"
> +              "dp_error: [%u], errno: [%u], error_msg: [%s]\n",
> +              (unsigned int)err_maj, (unsigned int)err_min,
> +              err_msg ? err_msg : "none");
> +    }
> +
>      talloc_zfree(subreq);
>      talloc_zfree(err_msg);
>      /* Errors during individual lookups are ignored. */
> -- 
> 1.8.4.2
> 

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