Re: [PATCH] ksmbd: remove unnecessary conditions

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On (21/09/07 10:34), Dan Carpenter wrote:
>  
>  		id = le32_to_cpu(psid->sub_auth[psid->num_subauth - 1]);
> -		if (id >= 0) {
> -			/*
> -			 * Translate raw sid into kuid in the server's user
> -			 * namespace.
> -			 */
> -			uid = make_kuid(&init_user_ns, id);
> -
> -			/* If this is an idmapped mount, apply the idmapping. */
> -			uid = kuid_from_mnt(user_ns, uid);
> -			if (uid_valid(uid)) {
> -				fattr->cf_uid = uid;
> -				rc = 0;
> -			}
> +		/*
> +		 * Translate raw sid into kuid in the server's user
> +		 * namespace.
> +		 */
> +		uid = make_kuid(&init_user_ns, id);

Can make_kuid() return INVALID_UID? IOW, uid_valid(uid) here as well?

> +
> +		/* If this is an idmapped mount, apply the idmapping. */
> +		uid = kuid_from_mnt(user_ns, uid);
> +		if (uid_valid(uid)) {
> +			fattr->cf_uid = uid;
> +			rc = 0;
>  		}

[..]

> +		/*
> +		 * Translate raw sid into kgid in the server's user
> +		 * namespace.
> +		 */
> +		gid = make_kgid(&init_user_ns, id);

Ditto.

> +		/* If this is an idmapped mount, apply the idmapping. */
> +		gid = kgid_from_mnt(user_ns, gid);
> +		if (gid_valid(gid)) {
> +			fattr->cf_gid = gid;
> +			rc = 0;



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