com32/lib/fread.c

   1 /*
   2  * fread.c
   3  */
   4
   5 #include <errno.h>
   6 #include <unistd.h>
   7 #include <stdio.h>
   8
   9 size_t _fread(void *buf, size_t count, FILE * f)
  10 {
  11     size_t bytes = 0;
  12     ssize_t rv;
  13     char *p = buf;
  14
  15     while (count) {
  16         rv = read(fileno(f), p, count);
  17         if (rv == -1) {
  18             if (errno == EINTR || errno == EAGAIN)
  19                 continue;
  20             else
  21                 break;
  22         } else if (rv == 0) {
  23             break;
  24         }
  25
  26         p += rv;
  27         bytes += rv;
  28         count -= rv;
  29     }
  30
  31     return bytes;
  32 }