pipe - create pipe
int pipe(int filedes[2?);
pipe(2) 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.
- Too many file descriptors are in use by the process.
- The system file table is full.
- filedes is not valid.
SVr4, SVID, AT
read(2), write(2), fork(2), socketpair(2)