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Subject[PATCH v4 3/3] arm64: audit: Add audit hook in ptrace/syscall_trace
Date
This patch adds auditing functions on entry to or exit from
every system call invocation.

Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
---
arch/arm64/kernel/ptrace.c | 7 +++++++
1 file changed, 7 insertions(+)

diff --git a/arch/arm64/kernel/ptrace.c b/arch/arm64/kernel/ptrace.c
index 64ce39f..8cdba09 100644
--- a/arch/arm64/kernel/ptrace.c
+++ b/arch/arm64/kernel/ptrace.c
@@ -19,6 +19,7 @@
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/

+#include <linux/audit.h>
#include <linux/kernel.h>
#include <linux/sched.h>
#include <linux/mm.h>
@@ -38,6 +39,7 @@
#include <asm/compat.h>
#include <asm/debug-monitors.h>
#include <asm/pgtable.h>
+#include <asm/syscall.h>
#include <asm/traps.h>
#include <asm/system_misc.h>

@@ -1076,10 +1078,15 @@ asmlinkage int syscall_trace(int dir, struct pt_regs *regs)
}

if (dir) {
+ audit_syscall_exit(regs);
tracehook_report_syscall_exit(regs, 0);
} else {
if (tracehook_report_syscall_entry(regs))
regs->syscallno = ~0UL;
+ audit_syscall_entry(syscall_get_arch(current, regs),
+ (int)regs->syscallno,
+ regs->orig_x0, regs->regs[1],
+ regs->regs[2], regs->regs[3]);
}

if (is_compat_task())
--
1.7.9.5


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