From a00157cc0e216a9829f2659ce35c856a22aa5ba2 Mon Sep 17 00:00:00 2001
From: Rahat Mahmood <rahat@google.com>
Date: Mon, 10 Jun 2019 15:16:42 -0700
Subject: Store more information in the kernel socket table.

Store enough information in the kernel socket table to distinguish
between different types of sockets. Previously we were only storing
the socket family, but this isn't enough to classify sockets. For
example, TCPv4 and UDPv4 sockets are both AF_INET, and ICMP sockets
are SOCK_DGRAM sockets with a particular protocol.

Instead of creating more sub-tables, flatten the socket table and
provide a filtering mechanism based on the socket entry.

Also generate and store a socket entry index ("sl" in linux) which
allows us to output entries in a stable order from procfs.

PiperOrigin-RevId: 252495895
---
 pkg/sentry/kernel/BUILD | 13 +++++++++++++
 1 file changed, 13 insertions(+)

(limited to 'pkg/sentry/kernel/BUILD')

diff --git a/pkg/sentry/kernel/BUILD b/pkg/sentry/kernel/BUILD
index 99a2fd964..04e375910 100644
--- a/pkg/sentry/kernel/BUILD
+++ b/pkg/sentry/kernel/BUILD
@@ -64,6 +64,18 @@ go_template_instance(
     },
 )
 
+go_template_instance(
+    name = "socket_list",
+    out = "socket_list.go",
+    package = "kernel",
+    prefix = "socket",
+    template = "//pkg/ilist:generic_list",
+    types = {
+        "Element": "*SocketEntry",
+        "Linker": "*SocketEntry",
+    },
+)
+
 proto_library(
     name = "uncaught_signal_proto",
     srcs = ["uncaught_signal.proto"],
@@ -104,6 +116,7 @@ go_library(
         "sessions.go",
         "signal.go",
         "signal_handlers.go",
+        "socket_list.go",
         "syscalls.go",
         "syscalls_state.go",
         "syslog.go",
-- 
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