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    Subject[PATCH 04/30] posix_types: Introduce __kernel_[u]long_t
    Date
    From: "H. Peter Anvin" <hpa@zytor.com>

    Introduce __kernel_[u]long_t, which allows an ABI to override all
    defaults of type [unsigned] long.

    This enables x32 and potentially other 32-bit userspace on 64-bit
    kernel ABIs.

    Signed-off-by: H. Peter Anvin <hpa@zytor.com>
    ---
    include/asm-generic/posix_types.h | 23 ++++++++++++++---------
    1 files changed, 14 insertions(+), 9 deletions(-)

    diff --git a/include/asm-generic/posix_types.h b/include/asm-generic/posix_types.h
    index e294fe6..91d44bd 100644
    --- a/include/asm-generic/posix_types.h
    +++ b/include/asm-generic/posix_types.h
    @@ -10,8 +10,13 @@
    * architectures, so that you can override them.
    */

    +#ifndef __kernel_long_t
    +typedef long __kernel_long_t;
    +typedef unsigned long __kernel_ulong_t;
    +#endif
    +
    #ifndef __kernel_ino_t
    -typedef unsigned long __kernel_ino_t;
    +typedef __kernel_ulong_t __kernel_ino_t;
    #endif

    #ifndef __kernel_mode_t
    @@ -19,7 +24,7 @@ typedef unsigned int __kernel_mode_t;
    #endif

    #ifndef __kernel_nlink_t
    -typedef unsigned long __kernel_nlink_t;
    +typedef __kernel_ulong_t __kernel_nlink_t;
    #endif

    #ifndef __kernel_pid_t
    @@ -36,7 +41,7 @@ typedef unsigned int __kernel_gid_t;
    #endif

    #ifndef __kernel_suseconds_t
    -typedef long __kernel_suseconds_t;
    +typedef __kernel_long_t __kernel_suseconds_t;
    #endif

    #ifndef __kernel_daddr_t
    @@ -67,9 +72,9 @@ typedef unsigned int __kernel_size_t;
    typedef int __kernel_ssize_t;
    typedef int __kernel_ptrdiff_t;
    #else
    -typedef unsigned long __kernel_size_t;
    -typedef long __kernel_ssize_t;
    -typedef long __kernel_ptrdiff_t;
    +typedef __kernel_ulong_t __kernel_size_t;
    +typedef __kernel_long_t __kernel_ssize_t;
    +typedef __kernel_long_t __kernel_ptrdiff_t;
    #endif
    #endif

    @@ -82,10 +87,10 @@ typedef struct {
    /*
    * anything below here should be completely generic
    */
    -typedef long __kernel_off_t;
    +typedef __kernel_long_t __kernel_off_t;
    typedef long long __kernel_loff_t;
    -typedef long __kernel_time_t;
    -typedef long __kernel_clock_t;
    +typedef __kernel_long_t __kernel_time_t;
    +typedef __kernel_long_t __kernel_clock_t;
    typedef int __kernel_timer_t;
    typedef int __kernel_clockid_t;
    typedef char * __kernel_caddr_t;
    --
    1.7.6.5


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