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Diffstat (limited to 'arch/x86/include/asm/syscall.h')
-rw-r--r--arch/x86/include/asm/syscall.h27
1 files changed, 27 insertions, 0 deletions
diff --git a/arch/x86/include/asm/syscall.h b/arch/x86/include/asm/syscall.h
index 386b78686c4d..1ace47b62592 100644
--- a/arch/x86/include/asm/syscall.h
+++ b/arch/x86/include/asm/syscall.h
@@ -13,9 +13,11 @@
#ifndef _ASM_X86_SYSCALL_H
#define _ASM_X86_SYSCALL_H
+#include <linux/audit.h>
#include <linux/sched.h>
#include <linux/err.h>
#include <asm/asm-offsets.h> /* For NR_syscalls */
+#include <asm/thread_info.h> /* for TS_COMPAT */
#include <asm/unistd.h>
extern const unsigned long sys_call_table[];
@@ -88,6 +90,12 @@ static inline void syscall_set_arguments(struct task_struct *task,
memcpy(&regs->bx + i, args, n * sizeof(args[0]));
}
+static inline int syscall_get_arch(struct task_struct *task,
+ struct pt_regs *regs)
+{
+ return AUDIT_ARCH_I386;
+}
+
#else /* CONFIG_X86_64 */
static inline void syscall_get_arguments(struct task_struct *task,
@@ -212,6 +220,25 @@ static inline void syscall_set_arguments(struct task_struct *task,
}
}
+static inline int syscall_get_arch(struct task_struct *task,
+ struct pt_regs *regs)
+{
+#ifdef CONFIG_IA32_EMULATION
+ /*
+ * TS_COMPAT is set for 32-bit syscall entry and then
+ * remains set until we return to user mode.
+ *
+ * TIF_IA32 tasks should always have TS_COMPAT set at
+ * system call time.
+ *
+ * x32 tasks should be considered AUDIT_ARCH_X86_64.
+ */
+ if (task_thread_info(task)->status & TS_COMPAT)
+ return AUDIT_ARCH_I386;
+#endif
+ /* Both x32 and x86_64 are considered "64-bit". */
+ return AUDIT_ARCH_X86_64;
+}
#endif /* CONFIG_X86_32 */
#endif /* _ASM_X86_SYSCALL_H */