NAME

pipe − create an interprocess channel

SYNOPSIS

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 4096 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. 

­[EMFILE] pipe will fail if 63 or more file descriptors are currently open. 

­[ENFILE] The system file table or system inode table is full. 

RETURN VALUE

Upon successful completion, a value of 0 is returned.  Otherwise, a value of −1 is returned and errno is set to indicate the error.

SEE ALSO

read(2), write(2). 
sh(1) in the CX/UX User’s Reference Manual. 

CX/UX Programmer’s Reference Manual