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a4ed0471d7
It was raised on libc-help [1] that some Linux kernel interfaces expect the libc to define __USE_TIME_BITS64 to indicate the time_t size for the kABI. Different than defined by the initial y2038 design document [2], the __USE_TIME_BITS64 is only defined for ABIs that support more than one time_t size (by defining the _TIME_BITS for each module). The 64 bit time_t redirects are now enabled using a different internal define (__USE_TIME64_REDIRECTS). There is no expected change in semantic or code generation. Checked on x86_64-linux-gnu, i686-linux-gnu, aarch64-linux-gnu, and arm-linux-gnueabi [1] https://sourceware.org/pipermail/libc-help/2024-January/006557.html [2] https://sourceware.org/glibc/wiki/Y2038ProofnessDesign Reviewed-by: DJ Delorie <dj@redhat.com>
55 lines
1.8 KiB
C
55 lines
1.8 KiB
C
/* Copyright (C) 1997-2024 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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<https://www.gnu.org/licenses/>. */
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#ifndef _SYS_PRCTL_H
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#define _SYS_PRCTL_H 1
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#include <features.h>
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#include <linux/prctl.h> /* The magic values come from here */
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/* Recent extensions to linux which may post-date the kernel headers
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we're picking up... */
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/* Memory tagging control operations (for AArch64). */
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#ifndef PR_MTE_TCF_SHIFT
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# define PR_MTE_TCF_SHIFT 1
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# define PR_MTE_TCF_NONE (0UL << PR_MTE_TCF_SHIFT)
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# define PR_MTE_TCF_SYNC (1UL << PR_MTE_TCF_SHIFT)
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# define PR_MTE_TCF_ASYNC (2UL << PR_MTE_TCF_SHIFT)
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# define PR_MTE_TCF_MASK (3UL << PR_MTE_TCF_SHIFT)
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# define PR_MTE_TAG_SHIFT 3
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# define PR_MTE_TAG_MASK (0xffffUL << PR_MTE_TAG_SHIFT)
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#endif
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__BEGIN_DECLS
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/* Control process execution. */
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#ifndef __USE_TIME64_REDIRECTS
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extern int prctl (int __option, ...) __THROW;
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#else
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# ifdef __REDIRECT
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extern int __REDIRECT_NTH (prctl, (int __option, ...), __prctl_time64);
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# else
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extern int __prctl_time64 (int __option,d ...) __THROW;
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# define ioctl __prctl_time64
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# endif
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#endif
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__END_DECLS
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#endif /* sys/prctl.h */
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