• Mickaël Salaün's avatar
    um: Add full asm/syscall.h support · d8f8b844
    Mickaël Salaün authored
    Add subarchitecture-independent implementation of asm-generic/syscall.h
    allowing access to user system call parameters and results:
    * syscall_get_nr()
    * syscall_rollback()
    * syscall_get_error()
    * syscall_get_return_value()
    * syscall_set_return_value()
    * syscall_get_arguments()
    * syscall_set_arguments()
    * syscall_get_arch() provided by arch/x86/um/asm/syscall.h
    
    This provides the necessary syscall helpers needed by
    HAVE_ARCH_SECCOMP_FILTER plus syscall_get_error().
    
    This is inspired from Meredydd Luff's patch
    (https://gerrit.chromium.org/gerrit/21425).
    Signed-off-by: default avatarMickaël Salaün <mic@digikod.net>
    Cc: Jeff Dike <jdike@addtoit.com>
    Cc: Richard Weinberger <richard@nod.at>
    Cc: Thomas Gleixner <tglx@linutronix.de>
    Cc: Ingo Molnar <mingo@redhat.com>
    Cc: H. Peter Anvin <hpa@zytor.com>
    Cc: Kees Cook <keescook@chromium.org>
    Cc: Andy Lutomirski <luto@amacapital.net>
    Cc: Will Drewry <wad@chromium.org>
    Cc: Meredydd Luff <meredydd@senatehouse.org>
    Cc: David Drysdale <drysdale@google.com>
    Signed-off-by: default avatarRichard Weinberger <richard@nod.at>
    Acked-by: default avatarKees Cook <keescook@chromium.org>
    d8f8b844
syscall.h 431 Bytes