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The generic VDSO implementation uses the Y2038 safe clock_gettime64() and
clock_getres_time64() syscalls as fallback for 32bit VDSO. This breaks
seccomp setups because these syscalls might be not (yet) allowed.
Implement the 32bit variants which use the legacy syscalls and select the
variant in the core library.
The 64bit time variants are not removed because they are required for the
time64 based vdso accessors.
Cc: Paul Burton <paul.burton@mips.com>
Fixes: 00b26474c2 ("lib/vdso: Provide generic VDSO implementation")
Signed-off-by: Vincenzo Frascino <vincenzo.frascino@arm.com>
Signed-off-by: Paul Burton <paul.burton@mips.com>
Cc: linux-arch@vger.kernel.org
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-kernel@vger.kernel.org
Cc: linux-mips@vger.kernel.org
Cc: linux-kselftest@vger.kernel.org
Cc: catalin.marinas@arm.com
Cc: will@kernel.org
Cc: tglx@linutronix.de
Cc: salyzyn@android.com
Cc: 0x7f454c46@gmail.com
Cc: luto@kernel.org
20 lines
433 B
C
20 lines
433 B
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Configuration file for O32 and N32 binaries.
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* Note: To be included before lib/vdso/gettimeofday.c
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*/
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#if defined(CONFIG_MIPS32_O32) || defined(CONFIG_MIPS32_N32)
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/*
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* In case of a 32 bit VDSO for a 64 bit kernel fake a 32 bit kernel
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* configuration.
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*/
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#undef CONFIG_64BIT
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#define BUILD_VDSO32
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#define CONFIG_32BIT 1
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#define CONFIG_GENERIC_ATOMIC64 1
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#define BUILD_VDSO32_64
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#endif
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