pipe: update IO-related system calls to support pipe() emulation
pipe: update IO-related system calls to support pipe() emulation

Signed-off-by: Joey Pabalinas <1140aba59ea685f414bfdf5c263f34bcec3b5f4c@gmail.com>

Lind-Project/native_client,Lind-Project/native_client,Lind-Project/native_client,Lind-Project/native_client,Lind-Project/native_client,Lind-Project/native_client