com32/lib/fwrite.c

   1 /*
   2  * fwrite.c
   3  */
   4
   5 #include <errno.h>
   6 #include <unistd.h>
   7 #include <stdio.h>
   8
   9 size_t _fwrite(const void *buf, size_t count, FILE *f)
  10 {
  11   size_t bytes = 0;
  12   ssize_t rv;
  13   const char *p = buf;
  14
  15   while ( count ) {
  16     rv = write(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 }