1 files changed, 44 insertions, 0 deletions
diff --git a/seccomp-bpf.h b/seccomp-bpf.h
new file mode 100644
index 0000000..f2a259c
--- /dev/null
+++ b/seccomp-bpf.h
@@ -0,0 +1,44 @@
+#include <stdio.h>
+#include <stddef.h>
+#include <stdlib.h>
+#include <errno.h>
+#include <signal.h>
+#include <string.h>
+#include <unistd.h>
+
+#include <sys/prctl.h>
+
+#include <linux/unistd.h>
+#include <linux/audit.h>
+#include <linux/filter.h>
+#include <linux/seccomp.h>
+
+#define syscall_nr (offsetof(struct seccomp_data, nr))
+#define arch_nr (offsetof(struct seccomp_data, arch))
+
+#if defined(__i386__)
+# define REG_SYSCALL	REG_EAX
+# define ARCH_NR	AUDIT_ARCH_I386
+#elif defined(__x86_64__)
+# define REG_SYSCALL	REG_RAX
+# define ARCH_NR	AUDIT_ARCH_X86_64
+#else
+# warning "Platform does not support seccomp filter yet"
+# define REG_SYSCALL	0
+# define ARCH_NR	0
+#endif
+
+#define VALIDATE_ARCHITECTURE \
+	BPF_STMT(BPF_LD+BPF_W+BPF_ABS, arch_nr), \
+	BPF_JUMP(BPF_JMP+BPF_JEQ+BPF_K, ARCH_NR, 1, 0), \
+	BPF_STMT(BPF_RET+BPF_K, SECCOMP_RET_KILL)
+
+#define EXAMINE_SYSCALL \
+	BPF_STMT(BPF_LD+BPF_W+BPF_ABS, syscall_nr)
+
+#define ALLOW_SYSCALL(name) \
+	BPF_JUMP(BPF_JMP+BPF_JEQ+BPF_K, __NR_##name, 0, 1), \
+	BPF_STMT(BPF_RET+BPF_K, SECCOMP_RET_ALLOW)
+
+#define KILL_PROCESS \
+	BPF_STMT(BPF_RET+BPF_K, SECCOMP_RET_KILL)