pub fn setresgid(rgid: Gid, egid: Gid, sgid: Gid) -> Result<()>Expand description
Sets the real, effective, and saved gid. (see setresuid(2))
rgid: real group idegid: effective group idsgid: saved group id- returns: Ok or libc error code.
Err is returned if the user doesn’t have permission to set this GID.