On Tuesday, December 02, 2014 03:18:35 PM Paul Moore wrote:
On Monday, December 01, 2014 03:58:09 PM Tony Jones wrote:
> Mainline kernel reports ppc64le (per
> a0588015deab1844261b27a67ae6f5b910fe2830) but there is no matching
> AUDIT_ARCH_PPC64LE. Eric just pinged me on irc about it. Fix to add it
> to include/uapi/linux/audit.h shoudld probably go upstream.
Untested, uncompiled too, but beyond the patch below, is there anything else
we would need in the kernel to enable proper ppc64le support?
The only question I have is whether or not PPC LE is just 64 bit or if it has
a 32 bit ABI also. The uname patch referenced above seems to show a ppcle and
ppc64le return. The original patch accepted was only for 64 bit ABI.
Thanks,
-Steve
commit 853ff573b5e5d9d09d1dff579a4a8d6fe8ca698c
Author: Paul Moore <pmoore(a)redhat.com>
Date: Tue Dec 2 14:50:28 2014 -0500
audit: add basic support for PPC64LE
Signed-off-by: Paul Moore <pmoore(a)redhat.com>
diff --git a/arch/powerpc/include/asm/syscall.h
b/arch/powerpc/include/asm/syscall.h
index b54b2ad..b9d65c3 100644
--- a/arch/powerpc/include/asm/syscall.h
+++ b/arch/powerpc/include/asm/syscall.h
@@ -86,4 +86,16 @@ static inline void syscall_set_arguments(struct
task_struct *task,
memcpy(®s->gpr[3 + i], args, n * sizeof(args[0]));
}
+static inline int syscall_get_arch(void)
+{
+#ifdef CONFIG_PPC64
+#ifdef __LITTLE_ENDIAN__
+ return AUDIT_ARCH_PPC64LE;
+#else
+ return AUDIT_ARCH_PPC64;
+#endif /* __LITTLE_ENDIAN__ */
+#endif /* CONFIG_PPC64 */
+ return AUDIT_ARCH_PPC;
+}
+
#endif /* _ASM_SYSCALL_H */
diff --git a/arch/powerpc/kernel/ptrace.c b/arch/powerpc/kernel/ptrace.c
index 2e3d2bf..6797a83 100644
--- a/arch/powerpc/kernel/ptrace.c
+++ b/arch/powerpc/kernel/ptrace.c
@@ -1788,13 +1788,13 @@ long do_syscall_trace_enter(struct pt_regs *regs)
#ifdef CONFIG_PPC64
if (!is_32bit_task())
- audit_syscall_entry(AUDIT_ARCH_PPC64,
+ audit_syscall_entry(syscall_get_arch(),
regs->gpr[0],
regs->gpr[3], regs->gpr[4],
regs->gpr[5], regs->gpr[6]);
else
#endif
- audit_syscall_entry(AUDIT_ARCH_PPC,
+ audit_syscall_entry(syscall_get_arch(),
regs->gpr[0],
regs->gpr[3] & 0xffffffff,
regs->gpr[4] & 0xffffffff,
diff --git a/include/uapi/linux/audit.h b/include/uapi/linux/audit.h
index cf67147..c3997f4 100644
--- a/include/uapi/linux/audit.h
+++ b/include/uapi/linux/audit.h
@@ -364,6 +364,7 @@ enum {
#define AUDIT_ARCH_PARISC64 (EM_PARISC|__AUDIT_ARCH_64BIT)
#define AUDIT_ARCH_PPC (EM_PPC)
#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)