audit: Add generic compat syscall support

lib/audit.c provides a generic function for auditing system calls. This patch extends it for compat syscall support on bi-architectures (32/64-bit) by adding lib/compat_audit.c. What is required to support this feature are: * add asm/unistd32.h for compat system call names * select CONFIG_AUDIT_ARCH_COMPAT_GENERIC

AKASHI Takahiro committed 12 years ago

Commit 4b588411 parent 7a017726 files · +88 −1Browse files

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include/uapi/linux/audit.h+6−0

@@ -362,6 +362,12 @@ enum { · 361 unmodified lines
362	362	#define AUDIT_ARCH_SPARC64 (EM_SPARCV9\|__AUDIT_ARCH_64BIT)
363	363	#define AUDIT_ARCH_X86_64 (EM_X86_64\|__AUDIT_ARCH_64BIT\|__AUDIT_ARCH_LE)
364	364
	365	+#ifdef CONFIG_COMPAT
	366	+#define audit_is_compat(arch) (!((arch) & __AUDIT_ARCH_64BIT))
	367	+#else
	368	+#define audit_is_compat(arch) false
	369	+#endif
	370	+
365	371	#define AUDIT_PERM_EXEC 1
366	372	#define AUDIT_PERM_WRITE 2
367	373	#define AUDIT_PERM_READ 4