Function sys_getcwd 

pub fn sys_getcwd(
    _abi: &mut LinuxRiscv64Abi,
    trapframe: &mut Trapframe,
) -> usize

Linux sys_getcwd system call implementation Get current working directory

Arguments:

• buf: Buffer to store the current working directory path
• size: Size of the buffer

Returns:

• Number of bytes written to buffer on success
• usize::MAX on error