b1115e916a
Reviewing (for all architectures, with a baseline kernel version of 2.6.32) the kernel support for features for which __ASSUME_* macros would be affected by a move to 2.6.32 as minimum kernel version showed up that __ASSUME_PREADV and __ASSUME_PWRITEV were wrongly defined for MicroBlaze (despite the corresponding syscall table entries not being wired up in the kernel) and Alpha for 2.6.30 and above (although the support on Alpha was added in 2.6.33). This patch makes the kernel-features.h files undefine those macros for appropriate versions. [BZ #16649] * sysdeps/unix/sysv/linux/alpha/kernel-features.h [__LINUX_KERNEL_VERSION < 0x020621] (__ASSUME_PREADV): Undefine. [__LINUX_KERNEL_VERSION < 0x020621] (__ASSUME_PWRITEV): Likewise. * sysdeps/unix/sysv/linux/microblaze/kernel-features.h (__ASSUME_PREADV): Undefine. (__ASSUME_PWRITEV): Likewise.
103 lines
3.1 KiB
C
103 lines
3.1 KiB
C
/* Set flags signalling availability of kernel features based on given
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kernel version number.
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Copyright (C) 2010-2014 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library. If not, see
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<http://www.gnu.org/licenses/>. */
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#ifndef _KERNEL_FEATURES_H
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#define _KERNEL_FEATURES_H 1
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#define __ASSUME_UTIMES 1
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/* Support for the O_CLOEXEC flag was added for alpha in 2.6.23. */
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#if __LINUX_KERNEL_VERSION >= 0x020617
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# define __ASSUME_O_CLOEXEC 1
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#endif
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/* Support for various CLOEXEC and NONBLOCK flags was added for alpha after
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2.6.33-rc1. */
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#if __LINUX_KERNEL_VERSION >= 0x020621
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# define __ASSUME_SOCK_CLOEXEC 1
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# define __ASSUME_IN_NONBLOCK 1
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#endif
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/* Support for the pipe2, eventfd2, signalfd4 syscalls was added for alpha
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after 2.6.33-rc1. */
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#if __LINUX_KERNEL_VERSION >= 0x020621
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# define __ASSUME_PIPE2 1
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# define __ASSUME_EVENTFD2 1
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# define __ASSUME_SIGNALFD4 1
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#endif
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/* Support for recvmmsg was added for alpha in 2.6.33. */
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#if __LINUX_KERNEL_VERSION >= 0x020621
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# define __ASSUME_RECVMMSG_SYSCALL 1
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#endif
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/* Support for accept4 and sendmmsg was added for alpha in 3.2. */
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#if __LINUX_KERNEL_VERSION >= 0x030200
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# define __ASSUME_ACCEPT4_SYSCALL 1
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# define __ASSUME_SENDMMSG_SYSCALL 1
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#endif
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#include_next <kernel-features.h>
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#undef __ASSUME_ST_INO_64_BIT
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/* pselect/ppoll were introduced on alpha just after 2.6.22-rc1. */
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#if __LINUX_KERNEL_VERSION < 0x020617
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# undef __ASSUME_PSELECT
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# undef __ASSUME_PPOLL
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#endif
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/* The *at syscalls were introduced on alpha just after 2.6.22-rc1. */
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#if __LINUX_KERNEL_VERSION < 0x020617
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# undef __ASSUME_ATFCTS
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#endif
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/* Support for inter-process robust mutexes was added on alpha just
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after 2.6.22-rc1. */
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#if __LINUX_KERNEL_VERSION < 0x020617
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# undef __ASSUME_SET_ROBUST_LIST
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#endif
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/* Support for utimensat was added on alpha after 2.6.22-rc1. */
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#if __LINUX_KERNEL_VERSION < 0x020617
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# undef __ASSUME_UTIMENSAT
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#endif
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/* Support for fallocate was added for alpha after 2.6.33-rc1. */
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#if __LINUX_KERNEL_VERSION < 0x020621
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# undef __ASSUME_FALLOCATE
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#endif
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/* There never has been support for fstat64. */
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#undef __ASSUME_STATFS64
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#define __ASSUME_STATFS64 0
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/* Support for fsyncdata was added for alpha after 2.6.21. */
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#if __LINUX_KERNEL_VERSION >= 0x020616
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# define __ASSUME_FDATASYNC 1
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#endif
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/* Support for preadv and pwritev was added for alpha in 2.6.33. */
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#if __LINUX_KERNEL_VERSION < 0x020621
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# undef __ASSUME_PREADV
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# undef __ASSUME_PWRITEV
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#endif
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#endif /* _KERNEL_FEATURES_H */
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