Linux Sandbox: Add support for SECCOMP_RET_TRACE.

sandbox/linux/seccomp-bpf/linux_seccomp.h

Index: sandbox/linux/seccomp-bpf/linux_seccomp.h
diff --git a/sandbox/linux/seccomp-bpf/linux_seccomp.h b/sandbox/linux/seccomp-bpf/linux_seccomp.h
index 0de0259da39ecdb745e5923b9a6ff3961c13be00..b56c6f8d81d2de095f6119eb1c09648a499340fe 100644
--- a/sandbox/linux/seccomp-bpf/linux_seccomp.h
+++ b/sandbox/linux/seccomp-bpf/linux_seccomp.h
@@ -124,6 +124,35 @@
 #define SECCOMP_ARG_LSB_IDX(nr) (offsetof(struct arch_seccomp_data, args) +   \
                                  8*(nr) + 0)
 
+struct pt_regs {
+  long int ebx;
+  long int ecx;
+  long int edx;
+  long int esi;
+  long int edi;
+  long int ebp;
+  long int eax;
+  long int ds;
+  long int es;
+  long int fs;
+  long int gs;
+  long int orig_eax;
+  long int eip;
+  long int cs;
+  long int eflags;
+  long int esp;
+  long int ss;
+};
+#define SECCOMP_PT_RESULT(_pt_regs) (_pt_regs).eax
+#define SECCOMP_PT_SYSCALL(_pt_regs) (_pt_regs).orig_eax
+#define SECCOMP_PT_IP(_pt_regs) (_pt_regs).eip
+#define SECCOMP_PT_PARM1(_pt_regs) (_pt_regs).ebx
+#define SECCOMP_PT_PARM2(_pt_regs) (_pt_regs).ecx
+#define SECCOMP_PT_PARM3(_pt_regs) (_pt_regs).edx
+#define SECCOMP_PT_PARM4(_pt_regs) (_pt_regs).esi
+#define SECCOMP_PT_PARM5(_pt_regs) (_pt_regs).edi
+#define SECCOMP_PT_PARM6(_pt_regs) (_pt_regs).ebp
+
 #elif defined(__x86_64__)
 #define MIN_SYSCALL         0u
 #define MAX_PUBLIC_SYSCALL  1024u
@@ -151,6 +180,45 @@
 #define SECCOMP_ARG_LSB_IDX(nr) (offsetof(struct arch_seccomp_data, args) +   \
                                  8*(nr) + 0)
 
+struct pt_regs {
+  unsigned long int r15;
+  unsigned long int r14;
+  unsigned long int r13;
+  unsigned long int r12;
+  unsigned long int rbp;
+  unsigned long int rbx;
+  unsigned long int r11;
+  unsigned long int r10;
+  unsigned long int r9;
+  unsigned long int r8;
+  unsigned long int rax;
+  unsigned long int rcx;
+  unsigned long int rdx;
+  unsigned long int rsi;
+  unsigned long int rdi;
+  unsigned long int orig_rax;
+  unsigned long int rip;
+  unsigned long int cs;
+  unsigned long int eflags;
+  unsigned long int rsp;
+  unsigned long int ss;
+  unsigned long int fs_base;
+  unsigned long int gs_base;
+  unsigned long int ds;
+  unsigned long int es;
+  unsigned long int fs;
+  unsigned long int gs;
+};
+#define SECCOMP_PT_RESULT(_pt_regs) (_pt_regs).rax
+#define SECCOMP_PT_SYSCALL(_pt_regs) (_pt_regs).orig_rax
+#define SECCOMP_PT_IP(_pt_regs) (_pt_regs).rip
+#define SECCOMP_PT_PARM1(_pt_regs) (_pt_regs).rdi
+#define SECCOMP_PT_PARM2(_pt_regs) (_pt_regs).rsi
+#define SECCOMP_PT_PARM3(_pt_regs) (_pt_regs).rdx
+#define SECCOMP_PT_PARM4(_pt_regs) (_pt_regs).r10
+#define SECCOMP_PT_PARM5(_pt_regs) (_pt_regs).r8
+#define SECCOMP_PT_PARM6(_pt_regs) (_pt_regs).r9
+
 #elif defined(__arm__) && (defined(__thumb__) || defined(__ARM_EABI__))
 // ARM EABI includes "ARM private" system calls starting at |__ARM_NR_BASE|,
 // and a "ghost syscall private to the kernel", cmpxchg,
@@ -189,6 +257,37 @@
 #define SECCOMP_ARG_LSB_IDX(nr) (offsetof(struct arch_seccomp_data, args) +   \
                                  8*(nr) + 0)
 
+struct pt_regs {
+  unsigned long r0;
+  unsigned long r1;
+  unsigned long r2;
+  unsigned long r3;
+  unsigned long r4;
+  unsigned long r5;
+  unsigned long r6;
+  unsigned long r7;
+  unsigned long r8;
+  unsigned long r9;
+  unsigned long r10;
+  unsigned long fp;
+  unsigned long ip;
+  unsigned long sp;
+  unsigned long lr;
+  unsigned long pc;
+  unsigned long cpsr;
+  unsigned long orig_r0;
+}
+#define SECCOMP_PT_RESULT(_pt_regs) (_pt_regs).r0
+#define SECCOMP_PT_SYSCALL(_pt_regs) (_pt_regs).r7
+#define SECCOMP_PT_IP(_pt_regs) (_pt_regs).pc
+#define SECCOMP_PT_PARM1(_pt_regs) (_pt_regs).r0
+#define SECCOMP_PT_PARM2(_pt_regs) (_pt_regs).r1
+#define SECCOMP_PT_PARM3(_pt_regs) (_pt_regs).r2
+#define SECCOMP_PT_PARM4(_pt_regs) (_pt_regs).r3
+#define SECCOMP_PT_PARM5(_pt_regs) (_pt_regs).r4
+#define SECCOMP_PT_PARM6(_pt_regs) (_pt_regs).r5
+
+
 #else
 #error Unsupported target platform