[libvirt] [PATCH] conf: virDomainDefValidateInternal prohibit some characters in shmem name

[Jiri Denemark]

On Tue, Jul 10, 2018 at 13:37:34 +0200, Simon Kobyda wrote:
> XML shmem name will not include characters '/', '.' or '..', as shmem name
> is used in a path
> https://bugzilla.redhat.com/show_bug.cgi?id=1192400
> ---
>  src/conf/domain_conf.c | 13 +++++++++++++
>  1 file changed, 13 insertions(+)
> 
> diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c
> index 7ab2953d83..3f580525bb 100644
> --- a/src/conf/domain_conf.c
> +++ b/src/conf/domain_conf.c
> @@ -6107,6 +6107,8 @@ virDomainDefLifecycleActionValidate(const virDomainDef *def)
>  static int
>  virDomainDefValidateInternal(const virDomainDef *def)
>  {
> +    size_t i;
> +
>      if (virDomainDefCheckDuplicateDiskInfo(def) < 0)
>          return -1;
>  
> @@ -6136,6 +6138,17 @@ virDomainDefValidateInternal(const virDomainDef *def)
>          return -1;
>      }
>  
> +    for (i = 0; i < def->nshmems; i++) {
> +        if (strchr(def->shmems[i]->name, '/'))
> +            return -1;
> +
> +        if (strchr(def->shmems[i]->name, '.'))
> +            return -1;
> +
> +        if (strstr(def->shmems[i]->name, ".."))
> +            return -1;
> +    }
> +

Why do you want to forbid "." and ".." in the name? Sure '/' should not
be anywhere in the name, but what's wrong with dots? The name as a whole
should not be "." or ".." (as correctly stated in the bugzilla), but
there's nothing wrong with, e.g., "some.name.with.dots...", is it?

Jirka