executor: fix build on newer linux distros

This sucks a lot, but ebtables.h is now broken too on Debian 4.17:

ebtables.h: In function ‘ebt_entry_target* ebt_get_target(ebt_entry*)’:
ebtables.h:197:19: error: invalid conversion from ‘void*’ to ‘ebt_entry_target*’

1 files changed, 34 insertions, 2 deletions

diff --git a/executor/common_linux.h b/executor/common_linux.h
index 6980d8ca6..e0dcd9caf 100644
--- a/executor/common_linux.h
+++ b/executor/common_linux.h
@@ -915,6 +915,7 @@ static bool write_file(const char* file, const char* what, ...)
 
 #if SYZ_EXECUTOR || SYZ_RESET_NET_NAMESPACE
 #include <errno.h>
+#include <linux/if.h>
 #include <linux/net.h>
 #include <netinet/in.h>
 #include <string.h>
@@ -1234,8 +1235,39 @@ static void reset_arptables()
 	close(fd);
 }
 
-#include <linux/if.h>
-#include <linux/netfilter_bridge/ebtables.h>
+// ebtables.h is broken too:
+// ebtables.h: In function ‘ebt_entry_target* ebt_get_target(ebt_entry*)’:
+// ebtables.h:197:19: error: invalid conversion from ‘void*’ to ‘ebt_entry_target*’
+
+#define NF_BR_NUMHOOKS 6
+#define EBT_TABLE_MAXNAMELEN 32
+#define EBT_CHAIN_MAXNAMELEN 32
+#define EBT_BASE_CTL 128
+#define EBT_SO_SET_ENTRIES (EBT_BASE_CTL)
+#define EBT_SO_GET_INFO (EBT_BASE_CTL)
+#define EBT_SO_GET_ENTRIES (EBT_SO_GET_INFO + 1)
+#define EBT_SO_GET_INIT_INFO (EBT_SO_GET_ENTRIES + 1)
+#define EBT_SO_GET_INIT_ENTRIES (EBT_SO_GET_INIT_INFO + 1)
+
+struct ebt_replace {
+	char name[EBT_TABLE_MAXNAMELEN];
+	unsigned int valid_hooks;
+	unsigned int nentries;
+	unsigned int entries_size;
+	struct ebt_entries* hook_entry[NF_BR_NUMHOOKS];
+	unsigned int num_counters;
+	struct ebt_counter* counters;
+	char* entries;
+};
+
+struct ebt_entries {
+	unsigned int distinguisher;
+	char name[EBT_CHAIN_MAXNAMELEN];
+	unsigned int counter_offset;
+	int policy;
+	unsigned int nentries;
+	char data[0] __attribute__((aligned(__alignof__(struct ebt_replace))));
+};
 
 struct ebt_table_desc {
 	const char* name;