Break out executor into its own build target

PiperOrigin-RevId: 257147090
Change-Id: I34c5e86ca68f865fdae42e4077c52c6168672c06

sandboxed_api/sandbox2/BUILD.bazel

@@ -251,12 +251,32 @@ cc_library(
     ],
 )
 
+cc_library(
+    name = "executor",
+    srcs = ["executor.cc"],
+    hdrs = ["executor.h"],
+    copts = sapi_platform_copts(),
+    deps = [
+        ":forkserver",
+        ":forkserver_proto",
+        ":global_forkserver",
+        ":ipc",
+        ":limits",
+        ":namespace",
+        ":util",
+        "//sandboxed_api/sandbox2/util:fileops",
+        "@com_google_absl//absl/base:core_headers",
+        "@com_google_absl//absl/memory",
+        "@com_google_absl//absl/strings",
+        "@org_kernel_libcap//:libcap",
+    ],
+)
+
 # Should not be used in sandboxee code if it only uses sandbox2::Comms and
 # sandbox2::Client objects
 cc_library(
     name = "sandbox2",
     srcs = [
-        "executor.cc",
         "monitor.cc",
         "monitor.h",
         "policybuilder.cc",
@@ -264,24 +284,24 @@ cc_library(
         "stack_trace.cc",
     ],
     hdrs = [
+        "client.h",
         "executor.h",
-        "policybuilder.h",
-        "sandbox2.h",
-        "stack_trace.h",
-        # Workaround: reexporting the header files of our dependencies, see b/15420638
         "ipc.h",
         "limits.h",
         "notify.h",
         "policy.h",
+        "policybuilder.h",
         "regs.h",
         "result.h",
+        "sandbox2.h",
+        "stack_trace.h",
         "syscall.h",
-        "client.h",
     ],
     copts = sapi_platform_copts(),
     visibility = ["//visibility:public"],
     deps = [
         ":client",
+        ":executor",
         ":comms",
         ":violation_proto_cc",
         ":forkserver",

sandboxed_api/sandbox2/CMakeLists.txt

@@ -268,10 +268,31 @@ target_link_libraries(sandbox2_global_forkserver PRIVATE
   sapi::raw_logging
 )
 
-# sandboxed_api/sandbox2:sandbox2
-add_library(sandbox2_sandbox2 STATIC
+# sandboxed_api/sandbox2:executor
+add_library(sandbox2_executor STATIC
   executor.cc
   executor.h
+)
+add_library(sandbox2::executor ALIAS sandbox2_executor)
+target_link_libraries(sandbox2_executor PRIVATE
+  absl::core_headers
+  absl::memory
+  absl::strings
+  glog::glog
+  libcap::libcap
+  sandbox2::fileops
+  sandbox2::forkserver
+  sandbox2::forkserver_proto
+  sandbox2::global_forkserver
+  sandbox2::ipc
+  sandbox2::limits
+  sandbox2::namespace
+  sandbox2::util
+  sapi::base
+)
+
+# sandboxed_api/sandbox2:sandbox2
+add_library(sandbox2_sandbox2 STATIC
   monitor.cc
   monitor.h
   policybuilder.cc
@@ -296,6 +317,7 @@ target_link_libraries(sandbox2_sandbox2
           sandbox2::bpf_helper
           sandbox2::client
           sandbox2::comms
+          sandbox2::executor
           sandbox2::file_base
           sandbox2::fileops
           sandbox2::forkserver