ARCH: AUDIT: implement syscall_get_arch for all arches

For all arches which support audit implement syscall_get_arch()
They are all pretty easy and straight forward, stolen from how the call
to audit_syscall_entry() determines the arch.

Based-on-patch-by: Richard Briggs <rgb@redhat.com>
Signed-off-by: Eric Paris <eparis@redhat.com>
Cc: linux-ia64@vger.kernel.org
Cc: microblaze-uclinux@itee.uq.edu.au
Cc: linux-mips@linux-mips.org
Cc: linux@lists.openrisc.net
Cc: linux-parisc@vger.kernel.org
Cc: linuxppc-dev@lists.ozlabs.org
Cc: sparclinux@vger.kernel.org

arch/ia64/include/asm/syscall.h

@@ -13,6 +13,7 @@
 #ifndef _ASM_SYSCALL_H
 #define _ASM_SYSCALL_H	1
 
+#include <uapi/linux/audit.h>
 #include <linux/sched.h>
 #include <linux/err.h>
 
@@ -79,4 +80,9 @@ static inline void syscall_set_arguments(struct task_struct *task,
 
 	ia64_syscall_get_set_arguments(task, regs, i, n, args, 1);
 }
+
+static inline int syscall_get_arch(void)
+{
+	return AUDIT_ARCH_IA64;
+}
 #endif	/* _ASM_SYSCALL_H */

arch/microblaze/include/asm/syscall.h

@@ -1,6 +1,7 @@
 #ifndef __ASM_MICROBLAZE_SYSCALL_H
 #define __ASM_MICROBLAZE_SYSCALL_H
 
+#include <uapi/linux/audit.h>
 #include <linux/kernel.h>
 #include <linux/sched.h>
 #include <asm/ptrace.h>
@@ -99,4 +100,8 @@ static inline void syscall_set_arguments(struct task_struct *task,
 asmlinkage long do_syscall_trace_enter(struct pt_regs *regs);
 asmlinkage void do_syscall_trace_leave(struct pt_regs *regs);
 
+static inline int syscall_get_arch(void)
+{
+	return AUDIT_ARCH_MICROBLAZE;
+}
 #endif /* __ASM_MICROBLAZE_SYSCALL_H */

arch/mips/include/asm/syscall.h

@@ -129,7 +129,7 @@ extern const unsigned long sysn32_call_table[];
 
 static inline int syscall_get_arch(void)
 {
-	int arch = EM_MIPS;
+	int arch = AUDIT_ARCH_MIPS;
 #ifdef CONFIG_64BIT
 	if (!test_thread_flag(TIF_32BIT_REGS))
 		arch |= __AUDIT_ARCH_64BIT;

arch/openrisc/include/asm/syscall.h

@@ -19,6 +19,7 @@
 #ifndef __ASM_OPENRISC_SYSCALL_H__
 #define __ASM_OPENRISC_SYSCALL_H__
 
+#include <uapi/linux/audit.h>
 #include <linux/err.h>
 #include <linux/sched.h>
 
@@ -71,4 +72,8 @@ syscall_set_arguments(struct task_struct *task, struct pt_regs *regs,
 	memcpy(&regs->gpr[3 + i], args, n * sizeof(args[0]));
 }
 
+static inline int syscall_get_arch(void)
+{
+	return AUDIT_ARCH_OPENRISC;
+}
 #endif

arch/parisc/include/asm/syscall.h

@@ -3,6 +3,8 @@
 #ifndef _ASM_PARISC_SYSCALL_H_
 #define _ASM_PARISC_SYSCALL_H_
 
+#include <uapi/linux/audit.h>
+#include <linux/compat.h>
 #include <linux/err.h>
 #include <asm/ptrace.h>
 
@@ -37,4 +39,13 @@ static inline void syscall_get_arguments(struct task_struct *tsk,
 	}
 }
 
+static inline int syscall_get_arch(void)
+{
+	int arch = AUDIT_ARCH_PARISC;
+#ifdef CONFIG_64BIT
+	if (!is_compat_task())
+		arch = AUDIT_ARCH_PARISC64;
+#endif
+	return arch;
+}
 #endif /*_ASM_PARISC_SYSCALL_H_*/

arch/powerpc/include/asm/syscall.h

@@ -13,6 +13,8 @@
 #ifndef _ASM_SYSCALL_H
 #define _ASM_SYSCALL_H	1
 
+#include <uapi/linux/audit.h>
+#include <linux/compat.h>
 #include <linux/sched.h>
 
 /* ftrace syscalls requires exporting the sys_call_table */
@@ -86,4 +88,14 @@ static inline void syscall_set_arguments(struct task_struct *task,
 	memcpy(&regs->gpr[3 + i], args, n * sizeof(args[0]));
 }
 
+static inline int syscall_get_arch(void)
+{
+	int arch = AUDIT_ARCH_PPC;
+
+#ifdef CONFIG_PPC64
+	if (!is_32bit_task())
+		arch = AUDIT_ARCH_PPC64;
+#endif
+	return arch;
+}
 #endif	/* _ASM_SYSCALL_H */

arch/sparc/include/asm/syscall.h

@@ -1,9 +1,11 @@
 #ifndef __ASM_SPARC_SYSCALL_H
 #define __ASM_SPARC_SYSCALL_H
 
+#include <uapi/linux/audit.h>
 #include <linux/kernel.h>
 #include <linux/sched.h>
 #include <asm/ptrace.h>
+#include <asm/thread_info.h>
 
 /*
  * The syscall table always contains 32 bit pointers since we know that the
@@ -124,4 +126,10 @@ static inline void syscall_set_arguments(struct task_struct *task,
 		regs->u_regs[UREG_I0 + i + j] = args[j];
 }
 
+static inline int syscall_get_arch(void)
+{
+	return test_thread_flag(TIF_32BIT) ? AUDIT_ARCH_SPARC
+					   : AUDIT_ARCH_SPARC64;
+}
+
 #endif /* __ASM_SPARC_SYSCALL_H */

include/uapi/linux/audit.h

@@ -351,6 +351,7 @@ enum {
 #define AUDIT_ARCH_IA64		(EM_IA_64|__AUDIT_ARCH_64BIT|__AUDIT_ARCH_LE)
 #define AUDIT_ARCH_M32R		(EM_M32R)
 #define AUDIT_ARCH_M68K		(EM_68K)
+#define AUDIT_ARCH_MICROBLAZE	(EM_MICROBLAZE)
 #define AUDIT_ARCH_MIPS		(EM_MIPS)
 #define AUDIT_ARCH_MIPSEL	(EM_MIPS|__AUDIT_ARCH_LE)
 #define AUDIT_ARCH_MIPS64	(EM_MIPS|__AUDIT_ARCH_64BIT)