linux-kernel - Re: [RESEND PATCH v1 2/2] misc: fastrpc: detect privileged processes based on group ID

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Message-ID: <bdf49a17-bb4c-a00d-0239-ed5d0eef470d@linaro.org>
Date:   Wed, 7 Jun 2023 20:47:10 +0200
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Ekansh Gupta <quic_ekangupt@...cinc.com>,
        srinivas.kandagatla@...aro.org, linux-arm-msm@...r.kernel.org
Cc:     ekangupt@....qualcomm.com, gregkh@...uxfoundation.org,
        linux-kernel@...r.kernel.org, fastrpc.upstream@....qualcomm.com,
        agross@...nel.org, andersson@...nel.org, konrad.dybcio@...aro.org,
        robh+dt@...nel.org, krzysztof.kozlowski+dt@...aro.org,
        conor+dt@...nel.org, devicetree@...r.kernel.org
Subject: Re: [RESEND PATCH v1 2/2] misc: fastrpc: detect privileged processes
 based on group ID

On 07/06/2023 18:30, Ekansh Gupta wrote:
> Get the information on privileged group IDs during rpmsg probing based
> on DT property. Check if the process requesting an offload to remote
> subsystem is privileged by comparing it's group ID with privileged
> group ID. Initialization process attributes are updated for a
> privileged process which is sent to remote process for resource
> management.
> 



> +
>  static const struct file_operations fastrpc_fops = {
>  	.open = fastrpc_device_open,
>  	.release = fastrpc_device_release,
> @@ -2277,6 +2396,10 @@ static int fastrpc_rpmsg_probe(struct rpmsg_device *rpdev)
>  	if (!data)
>  		return -ENOMEM;
>  
> +	err = fastrpc_init_privileged_gids(rdev, "qcom,fastrpc-gids", &data->gidlist);
> +	if (err)
> +		dev_err(rdev, "Privileged gids init failed.\n");
> +

What about error paths? No need for cleanup?

Best regards,
Krzysztof