| From | Kamal Mostafa <> | Subject | [PATCH 3.8 089/116] arm64: uid16: fix __kernel_old_{gid,uid}_t definitions | Date | Tue, 22 Jul 2014 15:21:40 -0700 |
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3.8.13.27 -stable review patch. If anyone has any objections, please let me know.
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From: Will Deacon <will.deacon@arm.com>
commit 34c65c43f1518bf85f93526ad373adc6a683b4c5 upstream.
Whilst native arm64 applications don't have the 16-bit UID/GID syscalls wired up, compat tasks can still access them. The 16-bit wrappers for these syscalls use __kernel_old_uid_t and __kernel_old_gid_t, which must be 16-bit data types to maintain compatibility with the 16-bit UIDs used by compat applications.
This patch defines 16-bit __kernel_old_{gid,uid}_t types for arm64 instead of using the 32-bit types provided by asm-generic.
Signed-off-by: Will Deacon <will.deacon@arm.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Kamal Mostafa <kamal@canonical.com> --- arch/arm64/include/asm/Kbuild | 1 - arch/arm64/include/uapi/asm/posix_types.h | 10 ++++++++++ 2 files changed, 10 insertions(+), 1 deletion(-) create mode 100644 arch/arm64/include/uapi/asm/posix_types.h
diff --git a/arch/arm64/include/asm/Kbuild b/arch/arm64/include/asm/Kbuild index 14a9d5a..9357d33 100644 --- a/arch/arm64/include/asm/Kbuild +++ b/arch/arm64/include/asm/Kbuild @@ -27,7 +27,6 @@ generic-y += mutex.h generic-y += pci.h generic-y += percpu.h generic-y += poll.h -generic-y += posix_types.h generic-y += resource.h generic-y += scatterlist.h generic-y += sections.h diff --git a/arch/arm64/include/uapi/asm/posix_types.h b/arch/arm64/include/uapi/asm/posix_types.h new file mode 100644 index 0000000..7985ff6 --- /dev/null +++ b/arch/arm64/include/uapi/asm/posix_types.h @@ -0,0 +1,10 @@ +#ifndef __ASM_POSIX_TYPES_H +#define __ASM_POSIX_TYPES_H + +typedef unsigned short __kernel_old_uid_t; +typedef unsigned short __kernel_old_gid_t; +#define __kernel_old_uid_t __kernel_old_uid_t + +#include <asm-generic/posix_types.h> + +#endif /* __ASM_POSIX_TYPES_H */ -- 1.9.1
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