commands/aal/wr_bytes.c

   1 /* $Header$ */
   2 /*
   3  * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
   4  * See the copyright notice in the ACK home directory, in the file "Copyright".
   5  */
   6 #define MININT          (1 << (sizeof(int) * 8 - 1))
   7 #define MAXCHUNK        (~MININT)       /* Highest count we write(2).   */
   8 /* Notice that MAXCHUNK itself might be too large with some compilers.
   9    You have to put it in an int!
  10 */
  11
  12 static int maxchunk = MAXCHUNK;
  13
  14 /*
  15  * Just write "cnt" bytes to file-descriptor "fd".
  16  */
  17 wr_bytes(fd, string, cnt)
  18         register char   *string;
  19         register long   cnt;
  20 {
  21
  22         while (cnt) {
  23                 register int n = cnt >= maxchunk ? maxchunk : cnt;
  24
  25                 if (write(fd, string, n) != n)
  26                         wr_fatal();
  27                 string += n;
  28                 cnt -= n;
  29         }
  30 }