[Mesa-dev] [PATCH 58/88] glsl: disable on disk shader cache when running as root

[Eric Anholt]

Timothy Arceri <timothy.arceri at collabora.com> writes:

> ---
>  src/compiler/glsl/cache.c | 4 ++++
>  1 file changed, 4 insertions(+)
>
> diff --git a/src/compiler/glsl/cache.c b/src/compiler/glsl/cache.c
> index a6a9e47..dd53f4e 100644
> --- a/src/compiler/glsl/cache.c
> +++ b/src/compiler/glsl/cache.c
> @@ -141,6 +141,10 @@ cache_create(void)
>     struct stat sb;
>     size_t size;
>  
> +   /* If running as root disable cache */
> +   if (geteuid() == 0)
> +      return NULL;
> +

It looks like in other getenv code we're doing:

geteuid() != getuid

(it's not just root we care about, it's any time you're using a thing
that lets you setuid into someone else)
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