__NR_fchownat 298 arch/x86/include/generated/uapi/asm/unistd_32.h #define __NR_fchownat 298 __NR_fchownat 264 arch/x86/include/generated/uapi/asm/unistd_64.h #define __NR_fchownat 260 __NR_fchownat 231 arch/x86/include/generated/uapi/asm/unistd_x32.h #define __NR_fchownat (__X32_SYSCALL_BIT + 260)