[LTP] [PATCH v2] rpc01: fix variable not initialized

[Richard Palethorpe]

Hello,

Looks OK to me, Petr?

Acked-by: Richard Palethorpe <rpalethorpe@suse.com>

Hongchen Zhang <zhanghongchen@loongson.cn> writes:

> when error occurred in function callrpc/clnt_call, return_buffer may
> be leaved not initialized.
> As Petr said, we should check the return value before retrieve the
> return_buffer->data. Change do_compare's parameter from char * to
> struct data * to fix it.
>
> Signed-off-by: Hongchen Zhang <zhanghongchen@loongson.cn>
> ---
>  testcases/network/rpc/basic_tests/rpc01/rpc1.c | 14 ++++++++------
>  1 file changed, 8 insertions(+), 6 deletions(-)
>
> diff --git a/testcases/network/rpc/basic_tests/rpc01/rpc1.c b/testcases/network/rpc/basic_tests/rpc01/rpc1.c
> index bc9f35b..6b8619d 100644
> --- a/testcases/network/rpc/basic_tests/rpc01/rpc1.c
> +++ b/testcases/network/rpc/basic_tests/rpc01/rpc1.c
> @@ -18,7 +18,8 @@ char *file_name = NULL;
>  char host_name[100];
>  long host_address;
>  
> -void do_compare(int, char *, struct data *, char *);
> +void do_compare(int rpc_rc, char *msg, struct data *buffer,
> +			struct data *ret_buffer)
>  void usage_error(char *program_name);
>  
>  int main(int argc, char *argv[])
> @@ -128,7 +129,7 @@ int main(int argc, char *argv[])
>  	rc = callrpc(server, program, version, 1, (xdrproc_t)xdr_send_data,
>  			(char *)&buffer, (xdrproc_t)xdr_receive_data,
>  			(char *)&return_buffer);
> -	do_compare(rc, "callrpc", &buffer, return_buffer->data);
> +	do_compare(rc, "callrpc", &buffer, return_buffer);
>  
>  	server_sin.sin_port = 0;
>  	sock = RPC_ANYSOCK;
> @@ -145,7 +146,7 @@ int main(int argc, char *argv[])
>  				(char *)&buffer, (xdrproc_t)xdr_receive_data,
>  				(char *)&return_buffer, timeout);
>  	clnt_destroy(clnt);
> -	do_compare(rc, "udp transport", &buffer, return_buffer->data);
> +	do_compare(rc, "udp transport", &buffer, return_buffer);
>  
>  	server_sin.sin_port = 0;
>  	sock = RPC_ANYSOCK;
> @@ -160,12 +161,13 @@ int main(int argc, char *argv[])
>  				(char *)&buffer, (xdrproc_t)xdr_receive_data,
>  				(char *)&return_buffer, timeout);
>  	clnt_destroy(clnt);
> -	do_compare(rc, "tcp transport", &buffer, return_buffer->data);
> +	do_compare(rc, "tcp transport", &buffer, return_buffer);
>  
>  	exit(0);
>  }
>  
> -void do_compare(int rpc_rc, char *msg, struct data *buffer, char *ret_data)
> +void do_compare(int rpc_rc, char *msg, struct data *buffer,
> +			struct data *ret_buffer)
>  {
>  	int rc;
>  
> @@ -175,7 +177,7 @@ void do_compare(int rpc_rc, char *msg, struct data *buffer, char *ret_data)
>  		printf("\n");
>  		exit(1);
>  	}
> -	rc = memcmp(buffer->data, ret_data, buffer->data_length);
> +	rc = memcmp(buffer->data, ret_buffer->data, buffer->data_length);
>  	if (rc) {
>  		printf("Data compare for %s returned %d\n", msg, rc);
>  		exit(1);
> -- 
> 1.8.3.1


-- 
Thank you,
Richard.