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Subject[PATCH 00/14] Prepare syscall_get_arch for PTRACE_GET_SYSCALL_INFO
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.

Dmitry V. Levin (14):
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()
riscv: 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 | 10 ++++++++++
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 | 14 ++++++++++++++
include/uapi/linux/elf-em.h | 6 ++++++
kernel/auditsc.c | 4 ++--
kernel/seccomp.c | 4 ++--
36 files changed, 148 insertions(+), 47 deletions(-)
create mode 100644 arch/m68k/include/asm/syscall.h
create mode 100644 arch/unicore32/include/asm/syscall.h

--
ldv

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