kernel-features.h (2075B) - Raw
1 /* Set flags signalling availability of kernel features based on given 2 kernel version number. 3 Copyright (C) 2006-2025 Free Software Foundation, Inc. 4 This file is part of the GNU C Library. 5 6 The GNU C Library is free software; you can redistribute it and/or 7 modify it under the terms of the GNU Lesser General Public 8 License as published by the Free Software Foundation; either 9 version 2.1 of the License, or (at your option) any later version. 10 11 The GNU C Library is distributed in the hope that it will be useful, 12 but WITHOUT ANY WARRANTY; without even the implied warranty of 13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 14 Lesser General Public License for more details. 15 16 You should have received a copy of the GNU Lesser General Public 17 License along with the GNU C Library. If not, see 18 <https://www.gnu.org/licenses/>. */ 19 20 #include <endian.h> 21 #include_next <kernel-features.h> 22 23 /* The ARM kernel before 3.14.3 may or may not support 24 futex_atomic_cmpxchg_inatomic, depending on kernel 25 configuration. */ 26 #if __LINUX_KERNEL_VERSION < 0x030E03 27 # undef __ASSUME_SET_ROBUST_LIST 28 #endif 29 30 /* ARM fadvise64_64 reorganize the syscall arguments. */ 31 #define __ASSUME_FADVISE64_64_6ARG 1 32 33 /* Define this if your 32-bit syscall API requires 64-bit register 34 pairs to start with an even-number register. */ 35 #define __ASSUME_ALIGNED_REGISTER_PAIRS 1 36 37 /* ARM only has a syscall for fadvise64{_64} and it is defined with a 38 non-standard name. */ 39 #define __NR_fadvise64_64 __NR_arm_fadvise64_64 40 41 #define __ASSUME_RECV_SYSCALL 1 42 #define __ASSUME_SEND_SYSCALL 1 43 44 /* Support for the mlock2 and copy_file_range syscalls was added to 45 the compat syscall table for 64-bit kernels in 4.7, although 46 present in 32-bit kernels from 4.4 and 4.5 respectively. */ 47 #if __LINUX_KERNEL_VERSION < 0x040700 48 # undef __ASSUME_MLOCK2 49 #endif 50 51 #undef __ASSUME_CLONE_DEFAULT 52 #define __ASSUME_CLONE_BACKWARDS 1 53 54 #if __BYTE_ORDER == __BIG_ENDIAN 55 # define __ASSUME_SYSVIPC_BROKEN_MODE_T 56 #endif 57 58 #undef __ASSUME_SYSVIPC_DEFAULT_IPC_64