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       1                 :            : /*
       2                 :            :  * Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
       3                 :            :  *
       4                 :            :  * Licensed under the Apache License, Version 2.0 (the "License").
       5                 :            :  * You may not use this file except in compliance with the License.
       6                 :            :  * A copy of the License is located at
       7                 :            :  *
       8                 :            :  *  http://aws.amazon.com/apache2.0
       9                 :            :  *
      10                 :            :  * or in the "license" file accompanying this file. This file is distributed
      11                 :            :  * on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
      12                 :            :  * express or implied. See the License for the specific language governing
      13                 :            :  * permissions and limitations under the License.
      14                 :            :  */
      15                 :            : 
      16                 :            : #include "utils/s2n_io.h"
      17                 :            : 
      18                 :            : #include <errno.h>
      19                 :            : 
      20                 :            : #include "utils/s2n_safety.h"
      21                 :            : 
      22                 :            : S2N_RESULT s2n_io_check_write_result(ssize_t result)
      23                 :    1483711 : {
      24         [ +  + ]:    1483711 :     if (result < 0) {
      25 [ +  + ][ -  + ]:     577438 :         if (errno == EWOULDBLOCK || errno == EAGAIN) {
      26         [ +  + ]:     577407 :             RESULT_BAIL(S2N_ERR_IO_BLOCKED);
      27                 :     577407 :         }
      28         [ +  + ]:         31 :         RESULT_BAIL(S2N_ERR_IO);
      29                 :         31 :     }
      30                 :     906273 :     return S2N_RESULT_OK;
      31                 :    1483711 : }
      32                 :            : 
      33                 :            : S2N_RESULT s2n_io_check_read_result(ssize_t result)
      34                 :     947282 : {
      35         [ +  + ]:     947282 :     RESULT_GUARD(s2n_io_check_write_result(result));
      36         [ +  + ]:     601846 :     if (result == 0) {
      37         [ +  - ]:         36 :         RESULT_BAIL(S2N_ERR_CLOSED);
      38                 :         36 :     }
      39                 :     601810 :     return S2N_RESULT_OK;
      40                 :     601846 : }