Remove support for FUSE mounts on macOS

The NFSv4 driver that's part of the latest versions of macOS is far more
robust than OSXFUSE/macFUSE. The latter has a very high probability of
locking up your system.

pkg/filesystem/virtual/configuration/BUILD.bazel

@@ -35,17 +35,11 @@ go_library(
             "@org_golang_x_sys//unix",
         ],
         "@io_bazel_rules_go//go/platform:darwin": [
-            "//pkg/filesystem/virtual/fuse",
-            "@com_github_buildbarn_bb_storage//pkg/filesystem",
             "@com_github_buildbarn_go_xdr//pkg/protocols/darwin_nfs_sys_prot",
-            "@com_github_hanwen_go_fuse_v2//fuse",
             "@org_golang_x_sys//unix",
         ],
         "@io_bazel_rules_go//go/platform:ios": [
-            "//pkg/filesystem/virtual/fuse",
-            "@com_github_buildbarn_bb_storage//pkg/filesystem",
             "@com_github_buildbarn_go_xdr//pkg/protocols/darwin_nfs_sys_prot",
-            "@com_github_hanwen_go_fuse_v2//fuse",
             "@org_golang_x_sys//unix",
         ],
         "@io_bazel_rules_go//go/platform:linux": [

pkg/filesystem/virtual/configuration/fuse_mount_disabled.go

@@ -1,5 +1,5 @@
-//go:build freebsd || windows
-// +build freebsd windows
+//go:build darwin || freebsd || windows
+// +build darwin freebsd windows
 
 package configuration
 

pkg/filesystem/virtual/configuration/fuse_mount_enabled.go

@@ -1,5 +1,5 @@
-//go:build darwin || linux
-// +build darwin linux
+//go:build linux
+// +build linux
 
 package configuration
 

pkg/filesystem/virtual/fuse/BUILD.bazel

@@ -32,18 +32,8 @@ go_library(
             "@org_golang_x_sys//unix",
         ],
         "@io_bazel_rules_go//go/platform:darwin": [
-            "//pkg/filesystem/virtual",
-            "@com_github_buildbarn_bb_storage//pkg/auth",
-            "@com_github_buildbarn_bb_storage//pkg/clock",
-            "@com_github_buildbarn_bb_storage//pkg/filesystem",
-            "@com_github_buildbarn_bb_storage//pkg/filesystem/path",
-            "@com_github_buildbarn_bb_storage//pkg/util",
-            "@com_github_hanwen_go_fuse_v2//fuse",
-            "@com_github_jmespath_go_jmespath//:go-jmespath",
-            "@com_github_prometheus_client_golang//prometheus",
             "@org_golang_google_grpc//codes",
             "@org_golang_google_grpc//status",
-            "@org_golang_x_sys//unix",
         ],
         "@io_bazel_rules_go//go/platform:dragonfly": [
             "@org_golang_google_grpc//codes",
@@ -58,18 +48,8 @@ go_library(
             "@org_golang_google_grpc//status",
         ],
         "@io_bazel_rules_go//go/platform:ios": [
-            "//pkg/filesystem/virtual",
-            "@com_github_buildbarn_bb_storage//pkg/auth",
-            "@com_github_buildbarn_bb_storage//pkg/clock",
-            "@com_github_buildbarn_bb_storage//pkg/filesystem",
-            "@com_github_buildbarn_bb_storage//pkg/filesystem/path",
-            "@com_github_buildbarn_bb_storage//pkg/util",
-            "@com_github_hanwen_go_fuse_v2//fuse",
-            "@com_github_jmespath_go_jmespath//:go-jmespath",
-            "@com_github_prometheus_client_golang//prometheus",
             "@org_golang_google_grpc//codes",
             "@org_golang_google_grpc//status",
-            "@org_golang_x_sys//unix",
         ],
         "@io_bazel_rules_go//go/platform:js": [
             "@org_golang_google_grpc//codes",
@@ -119,16 +99,6 @@ go_test(
             "in_header_authenticator_test.go",
             "simple_raw_file_system_test.go",
         ],
-        "@io_bazel_rules_go//go/platform:darwin": [
-            "default_attributes_injecting_raw_file_system_test.go",
-            "in_header_authenticator_test.go",
-            "simple_raw_file_system_test.go",
-        ],
-        "@io_bazel_rules_go//go/platform:ios": [
-            "default_attributes_injecting_raw_file_system_test.go",
-            "in_header_authenticator_test.go",
-            "simple_raw_file_system_test.go",
-        ],
         "@io_bazel_rules_go//go/platform:linux": [
             "default_attributes_injecting_raw_file_system_test.go",
             "in_header_authenticator_test.go",
@@ -149,30 +119,6 @@ go_test(
             "@com_github_jmespath_go_jmespath//:go-jmespath",
             "@com_github_stretchr_testify//require",
         ],
-        "@io_bazel_rules_go//go/platform:darwin": [
-            ":fuse",
-            "//internal/mock",
-            "//pkg/filesystem/virtual",
-            "@com_github_buildbarn_bb_storage//pkg/auth",
-            "@com_github_buildbarn_bb_storage//pkg/filesystem",
-            "@com_github_buildbarn_bb_storage//pkg/filesystem/path",
-            "@com_github_golang_mock//gomock",
-            "@com_github_hanwen_go_fuse_v2//fuse",
-            "@com_github_jmespath_go_jmespath//:go-jmespath",
-            "@com_github_stretchr_testify//require",
-        ],
-        "@io_bazel_rules_go//go/platform:ios": [
-            ":fuse",
-            "//internal/mock",
-            "//pkg/filesystem/virtual",
-            "@com_github_buildbarn_bb_storage//pkg/auth",
-            "@com_github_buildbarn_bb_storage//pkg/filesystem",
-            "@com_github_buildbarn_bb_storage//pkg/filesystem/path",
-            "@com_github_golang_mock//gomock",
-            "@com_github_hanwen_go_fuse_v2//fuse",
-            "@com_github_jmespath_go_jmespath//:go-jmespath",
-            "@com_github_stretchr_testify//require",
-        ],
         "@io_bazel_rules_go//go/platform:linux": [
             ":fuse",
             "//internal/mock",

pkg/filesystem/virtual/fuse/allow_authenticator.go

@@ -1,5 +1,5 @@
-//go:build darwin || linux
-// +build darwin linux
+//go:build linux
+// +build linux
 
 package fuse
 

pkg/filesystem/virtual/fuse/authenticator.go

@@ -1,5 +1,5 @@
-//go:build darwin || linux
-// +build darwin linux
+//go:build linux
+// +build linux
 
 package fuse
 

pkg/filesystem/virtual/fuse/default_attributes_injecting_raw_file_system.go

@@ -1,5 +1,5 @@
-//go:build darwin || linux
-// +build darwin linux
+//go:build linux
+// +build linux
 
 package fuse
 

pkg/filesystem/virtual/fuse/default_attributes_injecting_raw_file_system_test.go

@@ -1,5 +1,5 @@
-//go:build darwin || linux
-// +build darwin linux
+//go:build linux
+// +build linux
 
 package fuse_test
 

pkg/filesystem/virtual/fuse/in_header_authenticator.go

@@ -1,5 +1,5 @@
-//go:build darwin || linux
-// +build darwin linux
+//go:build linux
+// +build linux
 
 package fuse
 

pkg/filesystem/virtual/fuse/in_header_authenticator_test.go

@@ -1,5 +1,5 @@
-//go:build darwin || linux
-// +build darwin linux
+//go:build linux
+// +build linux
 
 package fuse_test
 

pkg/filesystem/virtual/fuse/metrics_raw_file_system.go

@@ -1,5 +1,5 @@
-//go:build darwin || linux
-// +build darwin linux
+//go:build linux
+// +build linux
 
 package fuse
 

pkg/filesystem/virtual/fuse/simple_raw_file_system.go

@@ -1,5 +1,5 @@
-//go:build darwin || linux
-// +build darwin linux
+//go:build linux
+// +build linux
 
 package fuse
 

pkg/filesystem/virtual/fuse/simple_raw_file_system_test.go

@@ -1,5 +1,5 @@
-//go:build darwin || linux
-// +build darwin linux
+//go:build linux
+// +build linux
 
 package fuse_test
 

pkg/proto/configuration/filesystem/virtual/virtual.proto

@@ -14,10 +14,10 @@ message MountConfiguration {
   oneof backend {
     // Use the kernel's FUSE driver to expose the mount.
     //
-    // This option is supported on Linux and macOS, though its use is
-    // only recommended on Linux. On macOS, this option requires the
-    // OSXFUSE or macFUSE kernel extension to be installed. This kernel
-    // extension tends to cause system lockups under high load.
+    // This option is supported on Linux. In principle this could be
+    // made to work on macOS using the OSXFUSE/macFUSE kernel extension.
+    // Unfortunately, this kernel extension contains various bugs that
+    // cause system lockups under high load.
     FUSEMountConfiguration fuse = 2;
 
     // Run an in-process NFSv4 server and use the kernel's NFSv4 client