Implement SIOCGETSGCNT_IN6 ioctl

src/kernel_abi.cc

@@ -20,6 +20,8 @@
 #include <linux/if_bonding.h>
 #include <linux/ipc.h>
 #include <linux/mqueue.h>
+#include <linux/mroute.h>
+#include <linux/mroute6.h>
 #include <linux/msg.h>
 #include <linux/net.h>
 #include <linux/netfilter/x_tables.h>

src/kernel_abi.h

@@ -525,12 +525,36 @@ struct BaseArch : public wordsize,
     ptr<void> sival_ptr;
   };
 
+  struct in_addr {
+    uint32_t s_addr;
+  };
+  RR_VERIFY_TYPE(in_addr);
+
+  struct in6_addr {
+    union {
+      /* don't call these s6_addrX - those are macros */
+      uint8_t addr8[16];
+      uint16_t addr16[8];
+      uint32_t addr32[4];
+    };
+  };
+  RR_VERIFY_TYPE(in_addr);
+
   struct sockaddr {
     unsigned_short sa_family;
     char sa_data[14];
   };
   RR_VERIFY_TYPE(sockaddr);
 
+  struct sockaddr_in6 {
+    unsigned_short sin6_family;
+    unsigned_short sin6_port;
+    uint32_t sin6_flowinfo;
+    in6_addr sin6_addr;
+    uint32_t sin6_scope_id;
+  };
+  RR_VERIFY_TYPE(sockaddr_in6);
+
   struct sockaddr_storage {
     char sa_data[128];
   };
@@ -1049,6 +1073,24 @@ struct BaseArch : public wordsize,
   };
   RR_VERIFY_TYPE(iwreq);
 
+  struct sioc_sg_req {
+    in_addr src;
+    in_addr grp;
+    unsigned long pktcnt;
+    unsigned long bytecnt;
+    unsigned long wrong_if;
+  };
+  RR_VERIFY_TYPE(sioc_sg_req);
+
+  struct sioc_sg_req6 {
+    sockaddr_in6 src;
+    sockaddr_in6 grp;
+    unsigned long pktcnt;
+    unsigned long bytecnt;
+    unsigned long wrong_if;
+  };
+  RR_VERIFY_TYPE(sioc_sg_req6);
+
   struct _flock {
     signed_short l_type;
     signed_short l_whence;

src/record_syscall.cc

@@ -23,6 +23,8 @@
 #include <linux/ipc.h>
 #include <linux/joystick.h>
 #include <linux/kd.h>
+#include <linux/mroute.h>
+#include <linux/mroute6.h>
 #include <linux/msdos_fs.h>
 #include <linux/msg.h>
 #include <linux/net.h>
@@ -1718,6 +1720,22 @@ static Switchable prepare_ioctl(RecordTask* t,
       syscall_state.after_syscall_action(record_page_below_stack_ptr);
       return PREVENT_SWITCH;
 
+#if 0
+    /* TODO: the IPv4 and IPv6 variants of this ioctl have the same value.
+     * (SIOCPROTOPRIVATE+1) - and there are other uses of this in other
+     * protocols.  So this probably needs a dispatch by fd socket type :(
+     */
+    case SIOCGETSGCNT:
+      syscall_state.reg_parameter<typename Arch::sioc_sg_req>(3);
+      syscall_state.after_syscall_action(record_page_below_stack_ptr);
+      return PREVENT_SWITCH;
+#endif
+
+    case SIOCGETSGCNT_IN6:
+      syscall_state.reg_parameter<typename Arch::sioc_sg_req6>(3);
+      syscall_state.after_syscall_action(record_page_below_stack_ptr);
+      return PREVENT_SWITCH;
+
     // https://github.com/torvalds/linux/blob/254ec036db1123b10e23e1412c191a3cf70dce71/net/bridge/br_ioctl.c#L316-L369
     case SIOCGIFBR: {
         auto params = syscall_state.reg_parameter<unsigned long>(3, IN);