pipe(2) — sys5



PIPE(2)         DOMAIN/IX Reference Manual (SYS5)         PIPE(2)



NAME
     pipe - create an interprocess channel

USAGE
     int pipe (fildes)
     int fildes[2];

DESCRIPTION
     Pipe creates an I/O mechanism called a pipe and returns two
     file descriptors, fildes[0] and fildes[1].  Fildes[0] is
     opened for reading and fildes[1] is opened for writing.

     Up to 5120 bytes of data are buffered by the pipe before the
     writing process is blocked.  A read-only file descriptor
     fildes[0] accesses the data written to fildes[1] on a
     first-in-first-out (FIFO) basis.

NOTES
     Named pipes may not be opened for both reading and writing.

RETURN VALUE
     Upon successful completion, pipe returns zero (0).  Other-
     wise, it returns -1 and sets errno to indicate the error.

ERRORS
     Pipe will fail if:

     [EMFILE]       19 or more file descriptors are currently
                    open.

     [ENFILE]       The system file table is full.

RELATED INFORMATION
     sh(1), read(2), write(2)





















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