Function sys_setgid 

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

Linux sys_setgid implementation (syscall 144)

Set group ID. This is a stub implementation that always succeeds.

Arguments:

• gid: group ID to set

Returns:

• 0 on success