Re: [PATCH] libselinux: save errno value in avc_has_perm()

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On Fri, 2008-02-22 at 18:42 -0500, Eamon Walsh wrote:
> The errno value set by avc_has_perm_noaudit() is being lost somewhere in 
> the bowels of avc_audit().  This patch saves it off so it doesn't get lost.
> 
> Signed-off-by: Eamon Walsh <ewalsh@xxxxxxxxxxxxx>

Acked-by:  Stephen Smalley <sds@xxxxxxxxxxxxx>

Merge at will.

Seems suitable for the stable branch too.

> ---
> 
>  libselinux/src/avc.c |    4 +++-
>  1 file changed, 3 insertions(+), 1 deletion(-)
> 
> 
> Index: libselinux/src/avc.c
> ===================================================================
> --- libselinux/src/avc.c	(revision 2811)
> +++ libselinux/src/avc.c	(working copy)
> @@ -874,10 +874,12 @@
>  		 struct avc_entry_ref *aeref, void *auditdata)
>  {
>  	struct av_decision avd = { 0, 0, 0, 0, 0 };
> -	int rc;
> +	int errsave, rc;
>  
>  	rc = avc_has_perm_noaudit(ssid, tsid, tclass, requested, aeref, &avd);
> +	errsave = errno;
>  	avc_audit(ssid, tsid, tclass, requested, &avd, rc, auditdata);
> +	errno = errsave;
>  	return rc;
>  }
>  
> 
-- 
Stephen Smalley
National Security Agency


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