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arch: wire-up clone3() syscall

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Wire up the clone3() call on all arches that don't require hand-rolled
assembly.

Some of the arches look like they need special assembly massaging and it is
probably smarter if the appropriate arch maintainers would do the actual
wiring. Arches that are wired-up are:
- x86{_32,64}
- arm{64}
- xtensa

Signed-off-by: Christian Brauner <christian@brauner.io>
Acked-by: 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
This commit is contained in:
Christian Brauner 2019-05-25 11:37:43 +02:00
parent 7f192e3cd3
commit 8f3220a806
No known key found for this signature in database
GPG Key ID: 8EB056D53EECB12D
8 changed files with 11 additions and 2 deletions
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1
arch/arm/tools/syscall.tbl
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@ -447,3 +447,4 @@
431 common fsconfig sys_fsconfig
432 common fsmount sys_fsmount
433 common fspick sys_fspick
436 common clone3 sys_clone3

2
arch/arm64/include/asm/unistd.h
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@ -44,7 +44,7 @@
#define __ARM_NR_compat_set_tls (__ARM_NR_COMPAT_BASE + 5)
#define __ARM_NR_COMPAT_END (__ARM_NR_COMPAT_BASE + 0x800)
#define __NR_compat_syscalls 434
#define __NR_compat_syscalls 437
#endif
#define __ARCH_WANT_SYS_CLONE

2
arch/arm64/include/asm/unistd32.h
View File

@ -886,6 +886,8 @@ __SYSCALL(__NR_fsconfig, sys_fsconfig)
__SYSCALL(__NR_fsmount, sys_fsmount)
#define __NR_fspick 433
__SYSCALL(__NR_fspick, sys_fspick)
#define __NR_clone3 436
__SYSCALL(__NR_clone3, sys_clone3)
/*
* Please add new compat syscalls above this comment and update

1
arch/microblaze/kernel/syscalls/syscall.tbl
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@ -439,3 +439,4 @@
431 common fsconfig sys_fsconfig
432 common fsmount sys_fsmount
433 common fspick sys_fspick
436 common clone3 sys_clone3

1
arch/x86/entry/syscalls/syscall_32.tbl
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@ -438,3 +438,4 @@
431 i386 fsconfig sys_fsconfig __ia32_sys_fsconfig
432 i386 fsmount sys_fsmount __ia32_sys_fsmount
433 i386 fspick sys_fspick __ia32_sys_fspick
436 i386 clone3 sys_clone3 __ia32_sys_clone3

1
arch/x86/entry/syscalls/syscall_64.tbl
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@ -355,6 +355,7 @@
431 common fsconfig __x64_sys_fsconfig
432 common fsmount __x64_sys_fsmount
433 common fspick __x64_sys_fspick
436 common clone3 __x64_sys_clone3/ptregs
#
# x32-specific system call numbers start at 512 to avoid cache impact

1
arch/xtensa/kernel/syscalls/syscall.tbl
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@ -404,3 +404,4 @@
431 common fsconfig sys_fsconfig
432 common fsmount sys_fsmount
433 common fspick sys_fspick
436 common clone3 sys_clone3

4
include/uapi/asm-generic/unistd.h
View File

@ -844,9 +844,11 @@ __SYSCALL(__NR_fsconfig, sys_fsconfig)
__SYSCALL(__NR_fsmount, sys_fsmount)
#define __NR_fspick 433
__SYSCALL(__NR_fspick, sys_fspick)
#define __NR_clone3 436
__SYSCALL(__NR_clone3, sys_clone3)
#undef __NR_syscalls
#define __NR_syscalls 434
#define __NR_syscalls 437
/*
* 32 bit systems traditionally used different