[PATCH v5 3/3] arm64: audit: Add audit hook in ptrace/syscall_trace
From: AKASHI Takahiro <hidden>
Date: 2014-02-25 09:19:59
Also in:
lkml
Subsystem:
arm64 port (aarch64 architecture), ptrace support, the rest · Maintainers:
Catalin Marinas, Will Deacon, Oleg Nesterov, Linus Torvalds
This patch adds auditing functions on entry to or exit from every system call invocation. Signed-off-by: AKASHI Takahiro <redacted> Acked-by: Richard Guy Briggs <redacted> --- arch/arm64/kernel/ptrace.c | 11 +++++++++++ 1 file changed, 11 insertions(+)
diff --git a/arch/arm64/kernel/ptrace.c b/arch/arm64/kernel/ptrace.c
index c70133e..d4ce70e 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>
@@ -1062,6 +1064,9 @@ asmlinkage int syscall_trace(int dir, struct pt_regs *regs) { unsigned long saved_reg; + if (dir && test_thread_flag(TIF_SYSCALL_AUDIT)) + audit_syscall_exit(regs); + if (test_thread_flag(TIF_SYSCALL_TRACE)) { if (is_compat_task()) { /* AArch32 uses ip (r12) for scratch */
@@ -1087,5 +1092,11 @@ asmlinkage int syscall_trace(int dir, struct pt_regs *regs) regs->regs[7] = saved_reg; } + if (!dir && test_thread_flag(TIF_SYSCALL_AUDIT)) + audit_syscall_entry(syscall_get_arch(current, regs), + (int)regs->syscallno, + regs->orig_x0, regs->regs[1], + regs->regs[2], regs->regs[3]); + return regs->syscallno; }
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1.7.9.5