Typedefs starting with `u' in bsd/sys

• u_char bsd/sys/types.h:79
• uid_t bsd/sys/types.h:105
• uint bsd/sys/types.h:84
• u_long bsd/sys/types.h:82
• u_quad_t bsd/sys/types.h:87
• ushort bsd/sys/types.h:83