[PATCH] powerpc: add little endian flag to syscall_get_arch()

Richard Guy Briggs
2014-12-02T21:27:33Z

Since both ppc and ppc64 have LE variants which are now reported by uname, add
that flag (__AUDIT_ARCH_LE) to syscall_get_arch() and add AUDIT_ARCH_PPC*LE
variants.

Without this, perf trace and auditctl fail.

Mainline kernel reports ppc64le (per a058801) but there is no matching
AUDIT_ARCH_PPC64LE.

See:
https://www.redhat.com/archives/linux-audit/2014-August/msg00082.html
https://www.redhat.com/archives/linux-audit/2014-December/msg00004.html

Signed-off-by: Richard Guy Briggs <rgb-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
---
arch/powerpc/include/asm/syscall.h | 6 +++++-
include/uapi/linux/audit.h | 2 ++
2 files changed, 7 insertions(+), 1 deletions(-)

diff --git a/arch/powerpc/include/asm/syscall.h b/arch/powerpc/include/asm/syscall.h
index 6fa2708..a58acab 100644
--- a/arch/powerpc/include/asm/syscall.h
+++ b/arch/powerpc/include/asm/syscall.h
@@ -90,6 +90,10 @@ static inline void syscall_set_arguments(struct task_struct *task,

static inline int syscall_get_arch(void)
{
- return is_32bit_task() ? AUDIT_ARCH_PPC : AUDIT_ARCH_PPC64;
+ int arch = is_32bit_task() ? AUDIT_ARCH_PPC : AUDIT_ARCH_PPC64;
+#ifdef __LITTLE_ENDIAN__
+ arch |= __AUDIT_ARCH_LE
+#endif
+ return arch;
}
#endif /* _ASM_SYSCALL_H */
diff --git a/include/uapi/linux/audit.h b/include/uapi/linux/audit.h
index 4d100c8..fe29a99 100644
--- a/include/uapi/linux/audit.h
+++ b/include/uapi/linux/audit.h
@@ -364,7 +364,9 @@ enum {
#define AUDIT_ARCH_PARISC (EM_PARISC)
#define AUDIT_ARCH_PARISC64 (EM_PARISC|__AUDIT_ARCH_64BIT)
#define AUDIT_ARCH_PPC (EM_PPC)
+#define AUDIT_ARCH_PPCLE (EM_PPC|__AUDIT_ARCH_LE)
#define AUDIT_ARCH_PPC64 (EM_PPC64|__AUDIT_ARCH_64BIT)
+#define AUDIT_ARCH_PPC64LE (EM_PPC64|__AUDIT_ARCH_64BIT|__AUDIT_ARCH_LE)
#define AUDIT_ARCH_S390 (EM_S390)
#define AUDIT_ARCH_S390X (EM_S390|__AUDIT_ARCH_64BIT)
#define AUDIT_ARCH_SH (EM_SH)
--
1.7.1