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    Subject[PATCH v2 0/6] arm64: Add audit support
    This patchset adds system call audit support on arm64.
    Both 32-bit (AUIDT_ARCH_ARM[EB]) and 64-bit tasks (AUDIT_ARCH_AARCH64[EB])
    are supported, but presuming 32-LE on 64-LE or 32-BE on 64-BE.

    There are some prerequisites for this patch to work correctly:
    * "generic compat system call audit support" patch
    * "correct a type mismatch in audit_syscall_exit()" patch
    (already accepted and queued in 3.14)
    * "Modify a set of system calls in audit class" patch
    * userspace audit tool (v2.3.2 + my patch for arm64)

    All those were already or will be soon posted separately.
    Please review them as well for better understandings.

    This code was tested on both 32-bit and 64-bit LE userland
    in the following two ways:
    1) basic operations with auditctl/autrace
    # auditctl -a exit,always -S openat -F path=/etc/inittab
    # auditctl -a exit,always -F dir=/tmp -F perm=rw
    # auditctl -a task,always
    # autrace /bin/ls
    by comparing output from autrace with one from strace

    2) audit-test-code (+ my workarounds for arm/arm64)
    by running "audit-tool", "filter" and "syscalls" test categories.

    Changes v1 -> v2:
    * Modified to utilize "generic compat system call audit" [3/6, 4/6, 5/6]
    Please note that a required header, unistd_32.h, is automatically
    generated from unistd32.h.
    * Refer to regs->orig_x0 instead of regs->x0 as the first argument of
    system call in audit_syscall_entry() [6/6]
    * Include "Add regs_return_value() in syscall.h" patch [2/6],
    which was not intentionally included in v1 because it could be added
    by "kprobes support".

    AKASHI Takahiro (6):
    audit: Enable arm64 support
    arm64: Add regs_return_value() in syscall.h
    arm64: Add audit support
    arm64: audit: Add 32-bit (compat) syscall support
    arm64: audit: Add makefile rule to create unistd_32.h for compat
    arm64: audit: Add audit hook in ptrace/syscall_trace

    arch/arm64/Makefile | 4 ++++
    arch/arm64/include/asm/audit.h | 20 ++++++++++++++++++++
    arch/arm64/include/asm/ptrace.h | 5 +++++
    arch/arm64/include/asm/syscall.h | 22 ++++++++++++++++++++++
    arch/arm64/include/asm/thread_info.h | 1 +
    arch/arm64/kernel/entry.S | 3 +++
    arch/arm64/kernel/ptrace.c | 12 ++++++++++++
    arch/arm64/kernel/syscalls/Makefile | 20 ++++++++++++++++++++
    include/uapi/linux/audit.h | 2 ++
    init/Kconfig | 2 +-
    10 files changed, 90 insertions(+), 1 deletion(-)
    create mode 100644 arch/arm64/include/asm/audit.h
    create mode 100644 arch/arm64/kernel/syscalls/Makefile


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