PIPE

pipe − create pipe

#include <unistd.h>

int pipe(int filedes[2]);

pipe creates a pair of file descriptors, pointing to a pipe inode, and places them in the array pointed to by filedes. filedes[0] is for reading, filedes[1] is for writing.

On success, zero is returned. On error, −1 is returned, and errno is set appropriately.

EMFILE

Too many file descriptors are in use by the process.

ENFILE

The system file table is full.

EFAULT

filedes is not valid.

SVr4, SVID, AT&T, POSIX, X/OPEN, BSD 4.3

read(2), write(2), fork(2), socketpair(2)