Subsequently, Linux 2.4 added setresuid32 () and setresgid32 (), supporting 32-bit IDs. The glibc setresuidSubsequently, Linux 2.4 added setresuid32 () and setresgid32 (), supporting 32-bit IDs. The glibc setresuidSubsequently, Linux 2.4 added setresuid32 () and setresgid32 (), supporting 32-bit IDs. The glibc setresuidSubsequently, Linux 2.4 added setresuid32 () and setresgid32 (), supporting 32-bit IDs. The glibc setresuidsetregid32 (2) 2.4 setresgid (2) 2.2 setresgid32 (2) 2.4 setresuid (2) 2.2 setresuid32