LCOV - code coverage report
Current view: top level - source4/heimdal/lib/roken - net_write.c (source / functions) Hit Total Coverage
Test: coverage report for master 6248eab5 Lines: 9 12 75.0 %
Date: 2021-08-25 13:27:56 Functions: 1 1 100.0 %

          Line data    Source code
       1             : /*
       2             :  * Copyright (c) 1995, 1996, 1997, 1998 Kungliga Tekniska Högskolan
       3             :  * (Royal Institute of Technology, Stockholm, Sweden).
       4             :  * All rights reserved.
       5             :  *
       6             :  * Redistribution and use in source and binary forms, with or without
       7             :  * modification, are permitted provided that the following conditions
       8             :  * are met:
       9             :  *
      10             :  * 1. Redistributions of source code must retain the above copyright
      11             :  *    notice, this list of conditions and the following disclaimer.
      12             :  *
      13             :  * 2. Redistributions in binary form must reproduce the above copyright
      14             :  *    notice, this list of conditions and the following disclaimer in the
      15             :  *    documentation and/or other materials provided with the distribution.
      16             :  *
      17             :  * 3. Neither the name of the Institute nor the names of its contributors
      18             :  *    may be used to endorse or promote products derived from this software
      19             :  *    without specific prior written permission.
      20             :  *
      21             :  * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
      22             :  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
      23             :  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
      24             :  * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
      25             :  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
      26             :  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
      27             :  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
      28             :  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
      29             :  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
      30             :  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
      31             :  * SUCH DAMAGE.
      32             :  */
      33             : 
      34             : #include <config.h>
      35             : 
      36             : #include "roken.h"
      37             : 
      38             : /*
      39             :  * Like write but never return partial data.
      40             :  */
      41             : 
      42             : #ifndef _WIN32
      43             : 
      44             : ROKEN_LIB_FUNCTION ssize_t ROKEN_LIB_CALL
      45       14452 : net_write (rk_socket_t fd, const void *buf, size_t nbytes)
      46             : {
      47       14452 :     const char *cbuf = (const char *)buf;
      48             :     ssize_t count;
      49       14452 :     size_t rem = nbytes;
      50             : 
      51       45729 :     while (rem > 0) {
      52       16825 :         count = write (fd, cbuf, rem);
      53       16825 :         if (count < 0) {
      54           0 :             if (errno == EINTR)
      55           0 :                 continue;
      56             :             else
      57           0 :                 return count;
      58             :         }
      59       16825 :         cbuf += count;
      60       16825 :         rem -= count;
      61             :     }
      62       14452 :     return nbytes;
      63             : }
      64             : 
      65             : #else
      66             : 
      67             : ROKEN_LIB_FUNCTION ssize_t ROKEN_LIB_CALL
      68             : net_write(rk_socket_t sock, const void *buf, size_t nbytes)
      69             : {
      70             :     const char *cbuf = (const char *)buf;
      71             :     ssize_t count;
      72             :     size_t rem = nbytes;
      73             : #ifdef SOCKET_IS_NOT_AN_FD
      74             :     int use_write = 0;
      75             : #endif
      76             : 
      77             :     while (rem > 0) {
      78             : #ifdef SOCKET_IS_NOT_AN_FD
      79             :         if (use_write)
      80             :             count = _write (sock, cbuf, rem);
      81             :         else
      82             :             count = send (sock, cbuf, rem, 0);
      83             : 
      84             :         if (use_write == 0 &&
      85             :             rk_IS_SOCKET_ERROR(count) &&
      86             :             (rk_SOCK_ERRNO == WSANOTINITIALISED ||
      87             :              rk_SOCK_ERRNO == WSAENOTSOCK)) {
      88             :             use_write = 1;
      89             : 
      90             :             count = _write (sock, cbuf, rem);
      91             :         }
      92             : #else
      93             :         count = send (sock, cbuf, rem, 0);
      94             : #endif
      95             :         if (count < 0) {
      96             :             if (errno == EINTR)
      97             :                 continue;
      98             :             else
      99             :                 return count;
     100             :         }
     101             :         cbuf += count;
     102             :         rem -= count;
     103             :     }
     104             :     return nbytes;
     105             : }
     106             : 
     107             : #endif

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