Subsequently, Linux 2.4 added setreuid32 () and setregid32 (), supporting 32-bit IDs. The glibc setreuidSubsequently, Linux 2.4 added setreuid32 () and setregid32 (), supporting 32-bit IDs. The glibc setreuidSubsequently, Linux 2.4 added setreuid32 () and setregid32 (), supporting 32-bit IDs. The glibc setreuidSubsequently, Linux 2.4 added setreuid32 () and setregid32 (), supporting 32-bit IDs. The glibc setreuidAlpha setpriority (2) 1.0 setregid (2) 1.0 setregid32 (2) 2.4 setresgid (2) 2.2 setresgid32