/* Set flags signalling availability of kernel features based on given
kernel version number.
- Copyright (C) 2006-2014 Free Software Foundation, Inc.
+ Copyright (C) 2006-2021 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library. If not, see
- <http://www.gnu.org/licenses/>. */
+ <https://www.gnu.org/licenses/>. */
-/* The utimes syscall was added before 2.6.1. */
-#define __ASSUME_UTIMES 1
+#include <endian.h>
+#include_next <kernel-features.h>
-/* The signal frame layout changed in 2.6.18. */
-#if __LINUX_KERNEL_VERSION >= 132626
-# define __ASSUME_SIGFRAME_V2 1
+/* The ARM kernel before 3.14.3 may or may not support
+ futex_atomic_cmpxchg_inatomic, depending on kernel
+ configuration. */
+#if __LINUX_KERNEL_VERSION < 0x030E03
+# undef __ASSUME_SET_ROBUST_LIST
#endif
-/* Support for the eventfd2 and signalfd4 syscalls was added in 2.6.27. */
-#if __LINUX_KERNEL_VERSION >= 0x02061b
-# define __ASSUME_EVENTFD2 1
-# define __ASSUME_SIGNALFD4 1
-#endif
+/* ARM fadvise64_64 reorganize the syscall arguments. */
+#define __ASSUME_FADVISE64_64_6ARG 1
-/* Support for the recvmmsg syscall was added in 2.6.33. */
-#if __LINUX_KERNEL_VERSION >= 0x020621
-# define __ASSUME_RECVMMSG_SYSCALL 1
-#endif
+/* Define this if your 32-bit syscall API requires 64-bit register
+ pairs to start with an even-number register. */
+#define __ASSUME_ALIGNED_REGISTER_PAIRS 1
-/* Support for the accept4 syscall was added in 2.6.36. */
-#if __LINUX_KERNEL_VERSION >= 0x020624
-# define __ASSUME_ACCEPT4_SYSCALL 1
-#endif
+/* ARM only has a syscall for fadvise64{_64} and it is defined with a
+ non-standard name. */
+#define __NR_fadvise64_64 __NR_arm_fadvise64_64
+
+#define __ASSUME_RECV_SYSCALL 1
+#define __ASSUME_SEND_SYSCALL 1
-/* Support for the sendmmsg syscall was added in 3.0. */
-#if __LINUX_KERNEL_VERSION >= 0x030000
-# define __ASSUME_SENDMMSG_SYSCALL 1
+/* Support for the mlock2 and copy_file_range syscalls was added to
+ the compat syscall table for 64-bit kernels in 4.7, although
+ present in 32-bit kernels from 4.4 and 4.5 respectively. */
+#if __LINUX_KERNEL_VERSION < 0x040700
+# undef __ASSUME_MLOCK2
#endif
-#include_next <kernel-features.h>
+#undef __ASSUME_CLONE_DEFAULT
+#define __ASSUME_CLONE_BACKWARDS 1
-/* Support for pselect6, ppoll and epoll_pwait was added in 2.6.32. */
-#if __LINUX_KERNEL_VERSION < 0x020620
-# undef __ASSUME_PSELECT
-# undef __ASSUME_PPOLL
+#if __BYTE_ORDER == __BIG_ENDIAN
+# define __ASSUME_SYSVIPC_BROKEN_MODE_T
#endif
-/* The ARM kernel may or may not support
- futex_atomic_cmpxchg_inatomic, depending on kernel
- configuration. */
-#undef __ASSUME_FUTEX_LOCK_PI
-#undef __ASSUME_REQUEUE_PI
-#undef __ASSUME_SET_ROBUST_LIST
+#undef __ASSUME_SYSVIPC_DEFAULT_IPC_64