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ndelay_on.c (227B)

      1 /* Public domain. */
      2 
      3 #include <sys/types.h>
      4 #include <fcntl.h>
      5 #include "ndelay.h"
      6 
      7 #ifndef O_NONBLOCK
      8 #define O_NONBLOCK O_NDELAY
      9 #endif
     10 
     11 int ndelay_on(int fd)
     12 {
     13   return fcntl(fd,F_SETFL,fcntl(fd,F_GETFL,0) | O_NONBLOCK);
     14 }