🚀 go-pugleaf

In article <1992Jul14.061826.11689@Unibase.SK.CA> roe@Unibase.SK.CA (Roe Peterson) writes:

   890025d@dragon.acadiau.ca (Andy DeWolfe) writes:

   >Can anyone provide examples/references/information on setting up
   >bidirectional pipes using "C"/Unix?

   Sorry, but there is no such beastie as a bi-directional pipe.  The
   pipe(2) system call will return two file descriptors, one open for
   write, and one open for read.  Have the reader close the write end, and
   the writer close the read end.

   You can't use pipe to communicate in both direction over one file
   descriptor.

Actually, all pipes under System V R4 are bidirectional.  From pipe(2):

"pipe creates an I/O mechanism called a pipe and returns two file
descriptors, fildes[0] and fildes[1].  The files associated with fildes[0]
and fildes[1] are streams and are both opened for reading and writing."
--
Rich Kuhns			{uunet,nstar}!sawmill!rjk
PO Box 6249
100 Sawmill Road
Lafayette, IN  47903
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