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| author | Markos Chandras <markos.chandras@imgtec.com> | 2014-04-22 15:40:36 +0100 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2014-05-14 01:39:54 +0200 |
| commit | f2d0801f00b7aff0ac6b3666cbcdab499267418a (patch) | |
| tree | e8dc06a5b5db6daaca8dd466d86432d905370fd9 /arch | |
| parent | 367f0b50e502d2c384277ba2ed43b04add2b8b6f (diff) | |
| download | lwn-f2d0801f00b7aff0ac6b3666cbcdab499267418a.tar.gz lwn-f2d0801f00b7aff0ac6b3666cbcdab499267418a.zip | |
MIPS: Add new AUDIT_ARCH token for the N32 ABI on MIPS64
A MIPS64 kernel may support ELF files for all 3 MIPS ABIs
(O32, N32, N64). Furthermore, the AUDIT_ARCH_MIPS{,EL}64 token
does not provide enough information about the ABI for the 64-bit
process. As a result of which, userland needs to use complex
seccomp filters to decide whether a syscall belongs to the o32 or n32
or n64 ABI. Therefore, a new arch token for MIPS64/n32 is added so it
can be used by seccomp to explicitely set syscall filters for this ABI.
Signed-off-by: Markos Chandras <markos.chandras@imgtec.com>
Acked-by: Eric Paris <eparis@redhat.com>
Acked-by: Paul Moore <pmoore@redhat.com>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: linux-mips@linux-mips.org
Link: http://sourceforge.net/p/libseccomp/mailman/message/32239040/
Patchwork: https://patchwork.linux-mips.org/patch/6818/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/mips/include/asm/syscall.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/mips/include/asm/syscall.h b/arch/mips/include/asm/syscall.h index c6e9cd2bca8d..17960fe7a8ce 100644 --- a/arch/mips/include/asm/syscall.h +++ b/arch/mips/include/asm/syscall.h @@ -133,6 +133,8 @@ static inline int syscall_get_arch(void) #ifdef CONFIG_64BIT if (!test_thread_flag(TIF_32BIT_REGS)) arch |= __AUDIT_ARCH_64BIT; + if (test_thread_flag(TIF_32BIT_ADDR)) + arch |= __AUDIT_ARCH_CONVENTION_MIPS64_N32; #endif #if defined(__LITTLE_ENDIAN) arch |= __AUDIT_ARCH_LE; |