Re: [PATCH v2 RESEND] usbip: make remote list honor parsable output

[Shuah Khan <skhan@linuxfoundation.org>]

On 8/10/26 21:42, Jason Colapietro wrote:
> The -p option only affects local devices and gadgets. Remote lists still
> print their human-readable headings and details, so scripts cannot parse
> them using the documented option.
> 
> Pass the parsable flag through the remote listing path. Emit the same busid
> and usbid record used for local devices while continuing to consume every
> interface record from the server.

What happens without this patch? Can you elaborate with some examples?

> 
> Fixes: e9837bbb3e69 ("staging: usbip: userspace tools v1.0.0")
> Closes: https://bugzilla.kernel.org/show_bug.cgi?id=219502
> Cc: stable@vger.kernel.org
> Assisted-by: Codex:gpt-5
> Signed-off-by: Jason Colapietro <jasoncola1@gmail.com>
> ---
> Changes in v2:
> - Make the email From header match Signed-off-by.
> - Add Cc: stable@vger.kernel.org.
> 
>   tools/usb/usbip/src/usbip_list.c | 33 ++++++++++++++++++++------------
>   1 file changed, 21 insertions(+), 12 deletions(-)
> 
> diff --git a/tools/usb/usbip/src/usbip_list.c b/tools/usb/usbip/src/usbip_list.c
> index 3d810bcca02..b9d60b87e47 100644
> --- a/tools/usb/usbip/src/usbip_list.c
> +++ b/tools/usb/usbip/src/usbip_list.c
> @@ -41,7 +41,7 @@ void usbip_list_usage(void)
>   	printf("usage: %s", usbip_list_usage_string);
>   }
> 
> -static int get_exported_devices(char *host, int sockfd)
> +static int get_exported_devices(char *host, int sockfd, bool parsable)
>   {
>   	char product_name[100];
>   	char class_name[100];
> @@ -80,9 +80,11 @@ static int get_exported_devices(char *host, int sockfd)
>   		return 0;
>   	}
> 
> -	printf("Exportable USB devices\n");
> -	printf("======================\n");
> -	printf(" - %s\n", host);
> +	if (!parsable) {
> +		printf("Exportable USB devices\n");
> +		printf("======================\n");
> +		printf(" - %s\n", host);
> +	}
> 
>   	for (i = 0; i < reply.ndev; i++) {
>   		memset(&udev, 0, sizeof(udev));
> @@ -98,9 +100,14 @@ static int get_exported_devices(char *host, int sockfd)
>   		usbip_names_get_class(class_name, sizeof(class_name),
>   				      udev.bDeviceClass, udev.bDeviceSubClass,
>   				      udev.bDeviceProtocol);
> -		printf("%11s: %s\n", udev.busid, product_name);
> -		printf("%11s: %s\n", "", udev.path);
> -		printf("%11s: %s\n", "", class_name);
> +		if (parsable) {
> +			printf("busid=%s#usbid=%04x:%04x#\n", udev.busid,
> +			       udev.idVendor, udev.idProduct);
> +		} else {
> +			printf("%11s: %s\n", udev.busid, product_name);
> +			printf("%11s: %s\n", "", udev.path);
> +			printf("%11s: %s\n", "", class_name);
> +		}
> 
>   		for (j = 0; j < udev.bNumInterfaces; j++) {
>   			rc = usbip_net_recv(sockfd, &uintf, sizeof(uintf));
> @@ -116,16 +123,18 @@ static int get_exported_devices(char *host, int sockfd)
>   					uintf.bInterfaceClass,
>   					uintf.bInterfaceSubClass,
>   					uintf.bInterfaceProtocol);
> -			printf("%11s: %2d - %s\n", "", j, class_name);
> +			if (!parsable)
> +				printf("%11s: %2d - %s\n", "", j, class_name);
>   		}
> 
> -		printf("\n");
> +		if (!parsable)
> +			printf("\n");
>   	}
> 
>   	return 0;
>   }
> 
> -static int list_exported_devices(char *host)
> +static int list_exported_devices(char *host, bool parsable)
>   {
>   	int rc;
>   	int sockfd;
> @@ -138,7 +147,7 @@ static int list_exported_devices(char *host)
>   	}
>   	dbg("connected to %s:%s", host, usbip_port_string);
> 
> -	rc = get_exported_devices(host, sockfd);
> +	rc = get_exported_devices(host, sockfd, parsable);
>   	if (rc < 0) {
>   		err("failed to get device list from %s", host);
>   		return -1;
> @@ -351,7 +360,7 @@ int usbip_list(int argc, char *argv[])
>   			parsable = true;
>   			break;
>   		case 'r':
> -			ret = list_exported_devices(optarg);
> +			ret = list_exported_devices(optarg, parsable);
>   			goto out;
>   		case 'l':
>   			ret = list_devices(parsable);

thanks,
-- Shuah