* [PATCH v2 00/13] Prepare syscall_get_arch for PTRACE_GET_SYSCALL_INFO
@ 2019-03-17 23:28 Dmitry V. Levin
2019-03-18 19:02 ` Dmitry V. Levin
0 siblings, 1 reply; 2+ messages in thread
From: Dmitry V. Levin @ 2019-03-17 23:28 UTC (permalink / raw)
To: Paul Moore
Cc: Elvira Khabirova, Eugene Syromyatnikov, Andy Lutomirski,
Oleg Nesterov, linux-audit, linux-kernel
syscall_get_arch() is required to be implemented on all architectures in order
to extend the generic ptrace API with PTRACE_GET_SYSCALL_INFO request:
syscall_get_arch() is going to be called from ptrace_request() along with
syscall_get_nr(), syscall_get_arguments(), syscall_get_error(), and
syscall_get_return_value() functions with a tracee as their argument.
The primary intent is that the triple (audit_arch, syscall_nr, arg1..arg6)
should describe what system call is being called and what its arguments are.
This patchset began as a series called "Prepare for PTRACE_GET_SYSCALL_INFO",
then I merged it into a series called "ptrace: add PTRACE_GET_SYSCALL_INFO request"
that also contains ptrace-specific changes.
The ptrace-specific part, however, needs more attention to workaround problems
on niche architectures like alpha, while the syscall_get_arch() part is
straightforward, so I decided to split it out into a separate patchset that
just prepares syscall_get_arch() for PTRACE_GET_SYSCALL_INFO: it adds
syscall_get_arch() to those architectures that haven't implemented it yet,
and then adds "struct task_struct *" argument to syscall_get_arch()
on all architectures.
All patches from this patchset have been already reviewed, so it's ready
to be merged without waiting for the ptrace-specific part. As it's all
about syscall_get_arch(), it should probably go via audit tree.
Notes:
v2: rebased to v5.1-rc1, added Acked-by
Dmitry V. Levin (13):
Move EM_ARCOMPACT and EM_ARCV2 to uapi/linux/elf-em.h
arc: define syscall_get_arch()
c6x: define syscall_get_arch()
h8300: define syscall_get_arch()
Move EM_HEXAGON to uapi/linux/elf-em.h
hexagon: define syscall_get_arch()
m68k: define syscall_get_arch()
Move EM_NDS32 to uapi/linux/elf-em.h
nds32: define syscall_get_arch()
nios2: define syscall_get_arch()
Move EM_UNICORE to uapi/linux/elf-em.h
unicore32: define syscall_get_arch()
syscall_get_arch: add "struct task_struct *" argument
arch/alpha/include/asm/syscall.h | 2 +-
arch/arc/include/asm/elf.h | 6 +-----
arch/arc/include/asm/syscall.h | 11 +++++++++++
arch/arm/include/asm/syscall.h | 2 +-
arch/arm64/include/asm/syscall.h | 4 ++--
arch/c6x/include/asm/syscall.h | 7 +++++++
arch/csky/include/asm/syscall.h | 2 +-
arch/h8300/include/asm/syscall.h | 6 ++++++
arch/hexagon/include/asm/elf.h | 6 +-----
arch/hexagon/include/asm/syscall.h | 8 ++++++++
arch/ia64/include/asm/syscall.h | 2 +-
arch/m68k/include/asm/syscall.h | 12 ++++++++++++
arch/microblaze/include/asm/syscall.h | 2 +-
arch/mips/include/asm/syscall.h | 6 +++---
arch/mips/kernel/ptrace.c | 2 +-
arch/nds32/include/asm/elf.h | 3 +--
arch/nds32/include/asm/syscall.h | 9 +++++++++
arch/nios2/include/asm/syscall.h | 6 ++++++
arch/openrisc/include/asm/syscall.h | 2 +-
arch/parisc/include/asm/syscall.h | 4 ++--
arch/powerpc/include/asm/syscall.h | 10 ++++++++--
arch/riscv/include/asm/syscall.h | 2 +-
arch/s390/include/asm/syscall.h | 4 ++--
arch/sh/include/asm/syscall_32.h | 2 +-
arch/sh/include/asm/syscall_64.h | 2 +-
arch/sparc/include/asm/syscall.h | 5 +++--
arch/unicore32/include/asm/elf.h | 3 +--
arch/unicore32/include/asm/syscall.h | 12 ++++++++++++
arch/x86/include/asm/syscall.h | 8 +++++---
arch/x86/um/asm/syscall.h | 2 +-
arch/xtensa/include/asm/syscall.h | 2 +-
include/asm-generic/syscall.h | 5 +++--
include/uapi/linux/audit.h | 12 ++++++++++++
include/uapi/linux/elf-em.h | 6 ++++++
kernel/auditsc.c | 4 ++--
kernel/seccomp.c | 4 ++--
36 files changed, 137 insertions(+), 48 deletions(-)
create mode 100644 arch/m68k/include/asm/syscall.h
create mode 100644 arch/unicore32/include/asm/syscall.h
--
ldv
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: [PATCH v2 00/13] Prepare syscall_get_arch for PTRACE_GET_SYSCALL_INFO
2019-03-17 23:28 [PATCH v2 00/13] Prepare syscall_get_arch for PTRACE_GET_SYSCALL_INFO Dmitry V. Levin
@ 2019-03-18 19:02 ` Dmitry V. Levin
0 siblings, 0 replies; 2+ messages in thread
From: Dmitry V. Levin @ 2019-03-18 19:02 UTC (permalink / raw)
To: Paul Moore
Cc: Elvira Khabirova, Eugene Syromyatnikov, Andy Lutomirski,
Oleg Nesterov, linux-audit, linux-kernel
[-- Attachment #1: Type: text/plain, Size: 1787 bytes --]
On Mon, Mar 18, 2019 at 02:28:27AM +0300, Dmitry V. Levin wrote:
> syscall_get_arch() is required to be implemented on all architectures in order
> to extend the generic ptrace API with PTRACE_GET_SYSCALL_INFO request:
> syscall_get_arch() is going to be called from ptrace_request() along with
> syscall_get_nr(), syscall_get_arguments(), syscall_get_error(), and
> syscall_get_return_value() functions with a tracee as their argument.
>
> The primary intent is that the triple (audit_arch, syscall_nr, arg1..arg6)
> should describe what system call is being called and what its arguments are.
>
> This patchset began as a series called "Prepare for PTRACE_GET_SYSCALL_INFO",
> then I merged it into a series called "ptrace: add PTRACE_GET_SYSCALL_INFO request"
> that also contains ptrace-specific changes.
>
> The ptrace-specific part, however, needs more attention to workaround problems
> on niche architectures like alpha, while the syscall_get_arch() part is
> straightforward, so I decided to split it out into a separate patchset that
> just prepares syscall_get_arch() for PTRACE_GET_SYSCALL_INFO: it adds
> syscall_get_arch() to those architectures that haven't implemented it yet,
> and then adds "struct task_struct *" argument to syscall_get_arch()
> on all architectures.
>
> All patches from this patchset have been already reviewed, so it's ready
> to be merged without waiting for the ptrace-specific part. As it's all
> about syscall_get_arch(), it should probably go via audit tree.
>
> Notes:
> v2: rebased to v5.1-rc1, added Acked-by
Apparently, I failed to process the ACK given by Richard Guy Briggs
on January 17th, please also add
Acked-by: Richard Guy Briggs <rgb@redhat.com>
when applying.
Thanks,
--
ldv
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