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clone3: drop __ARCH_WANT_SYS_CLONE3 macro
When clone3() was introduced, it was not obvious how each architecture deals with setting up the stack and keeping the register contents in a fork()-like system call, so this was left for the architecture maintainers to implement, with __ARCH_WANT_SYS_CLONE3 defined by those that already implement it. Five years later, we still have a few architectures left that are missing clone3(), and the macro keeps getting in the way as it's fundamentally different from all the other __ARCH_WANT_SYS_* macros that are meant to provide backwards-compatibility with applications using older syscalls that are no longer provided by default. Address this by reversing the polarity of the macro, adding an __ARCH_BROKEN_SYS_CLONE3 macro to all architectures that don't already provide the syscall, and remove __ARCH_WANT_SYS_CLONE3 from all the other ones. Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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Arnd Bergmann
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Jul 10, 2024
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Original file line number | Diff line number | Diff line change |
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@@ -1,5 +1,4 @@ | ||
/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ | ||
#define __ARCH_WANT_SYS_CLONE | ||
#define __ARCH_WANT_SYS_CLONE3 | ||
|
||
#include <asm-generic/unistd.h> |
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Original file line number | Diff line number | Diff line change |
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@@ -4,6 +4,5 @@ | |
*/ | ||
|
||
#define __ARCH_WANT_SYS_CLONE | ||
#define __ARCH_WANT_SYS_CLONE3 | ||
|
||
#include <asm-generic/unistd.h> |
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