fork(2)

DESCRIPTION

Creates a copy-on-write child process.

SYNOPSIS

long fork(void);

RETURN VALUE

• Returns a non-negative result on success. Negative values are ABI errno codes.

ERRORS

• -EAGAIN
  • A process, thread, or registry slot cannot be allocated.
• -ESRCH
  • There is no current user process.

ABI

Arguments enter through the direct syscall ABI; validation is performed before entering the process subsystem.