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d68dbb0c9a
This cleanly handles arches who do not yet define clone3.
clone3() was initially placed under __ARCH_WANT_SYS_CLONE under the
assumption that this would cleanly handle all architectures. It does
not.
Architectures such as nios2 or h8300 simply take the asm-generic syscall
definitions and generate their syscall table from it. Since they don't
define __ARCH_WANT_SYS_CLONE the build would fail complaining about
sys_clone3 missing. The reason this doesn't happen for legacy clone is
that nios2 and h8300 provide assembly stubs for sys_clone. This seems to
be done for architectural reasons.
The build failures for nios2 and h8300 were caught int -next luckily.
The solution is to define __ARCH_WANT_SYS_CLONE3 that architectures can
add. Additionally, we need a cond_syscall(clone3) for architectures such
as nios2 or h8300 that generate their syscall table in the way I
explained above.
Fixes: 8f3220a806 ("arch: wire-up clone3() syscall")
Signed-off-by: Christian Brauner <christian@brauner.io>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Kees Cook <keescook@chromium.org>
Cc: David Howells <dhowells@redhat.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Adrian Reber <adrian@lisas.de>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Florian Weimer <fweimer@redhat.com>
Cc: linux-api@vger.kernel.org
Cc: linux-arch@vger.kernel.org
Cc: x86@kernel.org
60 lines
1.5 KiB
C
60 lines
1.5 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _ASM_X86_UNISTD_H
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#define _ASM_X86_UNISTD_H 1
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#include <uapi/asm/unistd.h>
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# ifdef CONFIG_X86_X32_ABI
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# define __SYSCALL_MASK (~(__X32_SYSCALL_BIT))
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# else
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# define __SYSCALL_MASK (~0)
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# endif
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# ifdef CONFIG_X86_32
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# include <asm/unistd_32.h>
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# define __ARCH_WANT_STAT64
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# define __ARCH_WANT_SYS_IPC
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# define __ARCH_WANT_SYS_OLD_MMAP
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# define __ARCH_WANT_SYS_OLD_SELECT
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# else
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# include <asm/unistd_64.h>
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# include <asm/unistd_64_x32.h>
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# define __ARCH_WANT_SYS_TIME
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# define __ARCH_WANT_SYS_UTIME
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# define __ARCH_WANT_COMPAT_SYS_PREADV64
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# define __ARCH_WANT_COMPAT_SYS_PWRITEV64
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# define __ARCH_WANT_COMPAT_SYS_PREADV64V2
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# define __ARCH_WANT_COMPAT_SYS_PWRITEV64V2
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# endif
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# define __ARCH_WANT_NEW_STAT
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# define __ARCH_WANT_OLD_READDIR
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# define __ARCH_WANT_OLD_STAT
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# define __ARCH_WANT_SYS_ALARM
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# define __ARCH_WANT_SYS_FADVISE64
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# define __ARCH_WANT_SYS_GETHOSTNAME
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# define __ARCH_WANT_SYS_GETPGRP
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# define __ARCH_WANT_SYS_NICE
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# define __ARCH_WANT_SYS_OLDUMOUNT
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# define __ARCH_WANT_SYS_OLD_GETRLIMIT
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# define __ARCH_WANT_SYS_OLD_UNAME
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# define __ARCH_WANT_SYS_PAUSE
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# define __ARCH_WANT_SYS_SIGNAL
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# define __ARCH_WANT_SYS_SIGPENDING
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# define __ARCH_WANT_SYS_SIGPROCMASK
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# define __ARCH_WANT_SYS_SOCKETCALL
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# define __ARCH_WANT_SYS_TIME32
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# define __ARCH_WANT_SYS_UTIME32
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# define __ARCH_WANT_SYS_WAITPID
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# define __ARCH_WANT_SYS_FORK
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# define __ARCH_WANT_SYS_VFORK
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# define __ARCH_WANT_SYS_CLONE
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# define __ARCH_WANT_SYS_CLONE3
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#endif /* _ASM_X86_UNISTD_H */
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