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audit: Add generic compat syscall support

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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

Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
Acked-by: Richard Guy Briggs <rgb@redhat.com>
Signed-off-by: Eric Paris <eparis@redhat.com>
This commit is contained in:
AKASHI Takahiro
2014-03-15 14:48:00 +09:00
committed by Eric Paris
parent 7a01772128
commit 4b58841149
6 changed files with 88 additions and 1 deletions
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6
include/uapi/linux/audit.h
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@@ -362,6 +362,12 @@ enum {
#define AUDIT_ARCH_SPARC64 (EM_SPARCV9|__AUDIT_ARCH_64BIT)
#define AUDIT_ARCH_X86_64 (EM_X86_64|__AUDIT_ARCH_64BIT|__AUDIT_ARCH_LE)
#ifdef CONFIG_COMPAT
#define audit_is_compat(arch) (!((arch) & __AUDIT_ARCH_64BIT))
#else
#define audit_is_compat(arch) false
#endif
#define AUDIT_PERM_EXEC 1
#define AUDIT_PERM_WRITE 2
#define AUDIT_PERM_READ 4