LCOV - code coverage report
Current view: top level - vhd/lib - atomicio.c (source / functions) Hit Total Coverage
Test: coverage.info Lines: 0 11 0.0 %
Date: 2025-07-10 10:47:11 Functions: 0 1 0.0 %
Branches: 0 7 0.0 %

           Branch data     Line data    Source code
       1                 :            : /*
       2                 :            :  * Copyright (c) 2005 Anil Madhavapeddy. All rights reserved.
       3                 :            :  * Copyright (c) 1995,1999 Theo de Raadt.  All rights reserved.
       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                 :            :  * 1. Redistributions of source code must retain the above copyright
      10                 :            :  *    notice, this list of conditions and the following disclaimer.
      11                 :            :  * 2. Redistributions in binary form must reproduce the above copyright
      12                 :            :  *    notice, this list of conditions and the following disclaimer in the
      13                 :            :  *    documentation and/or other materials provided with the distribution.
      14                 :            :  *
      15                 :            :  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
      16                 :            :  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
      17                 :            :  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
      18                 :            :  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
      19                 :            :  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
      20                 :            :  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
      21                 :            :  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
      22                 :            :  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
      23                 :            :  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
      24                 :            :  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
      25                 :            :  */
      26                 :            : 
      27                 :            : #ifdef HAVE_CONFIG_H
      28                 :            : #include "config.h"
      29                 :            : #endif
      30                 :            : 
      31                 :            : #include <stdlib.h>
      32                 :            : #include <errno.h>
      33                 :            : #include "atomicio.h"
      34                 :            : 
      35                 :            : /*
      36                 :            :  * ensure all of data on socket comes through. f==read || f==vwrite
      37                 :            :  */
      38                 :            : size_t
      39                 :          0 : atomicio(f, fd, _s, n)
      40                 :            :         ssize_t (*f) (int, void *, size_t);
      41                 :            :         int fd;
      42                 :            :         void *_s;
      43                 :            :         size_t n;
      44                 :            : {
      45                 :          0 :         char *s = _s;
      46                 :          0 :         size_t pos = 0;
      47                 :            :         ssize_t res;
      48                 :            : 
      49         [ #  # ]:          0 :         while (n > pos) {
      50                 :          0 :                 res = (f) (fd, s + pos, n - pos);
      51      [ #  #  # ]:          0 :                 switch (res) {
      52                 :            :                 case -1:
      53         [ #  # ]:          0 :                         if (errno == EINTR || errno == EAGAIN)
      54                 :          0 :                                 continue;
      55                 :            :                         return 0;
      56                 :            :                 case 0:
      57                 :          0 :                         errno = EPIPE;
      58                 :          0 :                         return pos;
      59                 :            :                 default:
      60                 :          0 :                         pos += (size_t)res;
      61                 :            :                 }
      62                 :            :         }
      63                 :            :         return (pos);
      64                 :            : }
      65                 :            : 

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