__sys_setreuid 555 kernel/sys.c return __sys_setreuid(ruid, euid); __sys_setreuid 50 kernel/uid16.c return __sys_setreuid(low2highuid(ruid), low2highuid(euid)); __sys_setreuid 7 kernel/uid16.h long __sys_setreuid(uid_t ruid, uid_t euid);