ext: Move to pkg/sentry/fsimpl.

fsimpl is the keeper of all filesystem implementations in VFS2.

PiperOrigin-RevId: 262617869

pkg/sentry/fsimpl/ext/BUILD

@@ -31,7 +31,7 @@ go_library(
         "symlink.go",
         "utils.go",
     ],
-    importpath = "gvisor.dev/gvisor/pkg/sentry/fs/ext",
+    importpath = "gvisor.dev/gvisor/pkg/sentry/fsimpl/ext",
     visibility = ["//pkg/sentry:internal"],
     deps = [
         "//pkg/abi/linux",
@@ -41,7 +41,7 @@ go_library(
         "//pkg/sentry/arch",
         "//pkg/sentry/context",
         "//pkg/sentry/fs",
-        "//pkg/sentry/fs/ext/disklayout",
+        "//pkg/sentry/fsimpl/ext/disklayout",
         "//pkg/sentry/kernel/auth",
         "//pkg/sentry/memmap",
         "//pkg/sentry/safemem",
@@ -62,11 +62,11 @@ go_test(
         "extent_test.go",
     ],
     data = [
-        "//pkg/sentry/fs/ext:assets/bigfile.txt",
-        "//pkg/sentry/fs/ext:assets/file.txt",
-        "//pkg/sentry/fs/ext:assets/tiny.ext2",
-        "//pkg/sentry/fs/ext:assets/tiny.ext3",
-        "//pkg/sentry/fs/ext:assets/tiny.ext4",
+        "//pkg/sentry/fsimpl/ext:assets/bigfile.txt",
+        "//pkg/sentry/fsimpl/ext:assets/file.txt",
+        "//pkg/sentry/fsimpl/ext:assets/tiny.ext2",
+        "//pkg/sentry/fsimpl/ext:assets/tiny.ext3",
+        "//pkg/sentry/fsimpl/ext:assets/tiny.ext4",
     ],
     embed = [":ext"],
     deps = [
@@ -74,7 +74,7 @@ go_test(
         "//pkg/binary",
         "//pkg/sentry/context",
         "//pkg/sentry/context/contexttest",
-        "//pkg/sentry/fs/ext/disklayout",
+        "//pkg/sentry/fsimpl/ext/disklayout",
         "//pkg/sentry/kernel/auth",
         "//pkg/sentry/usermem",
         "//pkg/sentry/vfs",

pkg/sentry/fsimpl/ext/README.md

@@ -44,8 +44,8 @@ an internal pointer, it can quickly fragment a structure across memory. As this
 runs along side a full blown kernel (which is memory intensive), having a
 fragmented struct might hurt performance. Hence these internal structures,
 though interfaced, are tightly packed in memory using the same inheritance
-pattern that pkg/sentry/vfs uses. The pkg/sentry/fs/ext/disklayout package makes
-an execption to this pattern for reasons documented in the package.
+pattern that pkg/sentry/vfs uses. The pkg/sentry/fsimpl/ext/disklayout package
+makes an execption to this pattern for reasons documented in the package.
 
 ### Security
 

pkg/sentry/fsimpl/ext/benchmark/BUILD

@@ -9,7 +9,7 @@ go_test(
     deps = [
         "//pkg/sentry/context",
         "//pkg/sentry/context/contexttest",
-        "//pkg/sentry/fs/ext",
+        "//pkg/sentry/fsimpl/ext",
         "//pkg/sentry/kernel/auth",
         "//pkg/sentry/vfs",
     ],

pkg/sentry/fsimpl/ext/benchmark/benchmark_test.go

@@ -26,7 +26,7 @@ import (
 
 	"gvisor.dev/gvisor/pkg/sentry/context"
 	"gvisor.dev/gvisor/pkg/sentry/context/contexttest"
-	"gvisor.dev/gvisor/pkg/sentry/fs/ext"
+	"gvisor.dev/gvisor/pkg/sentry/fsimpl/ext"
 	"gvisor.dev/gvisor/pkg/sentry/kernel/auth"
 	"gvisor.dev/gvisor/pkg/sentry/vfs"
 )

pkg/sentry/fsimpl/ext/block_map_test.go

@@ -21,7 +21,7 @@ import (
 
 	"github.com/google/go-cmp/cmp"
 	"gvisor.dev/gvisor/pkg/binary"
-	"gvisor.dev/gvisor/pkg/sentry/fs/ext/disklayout"
+	"gvisor.dev/gvisor/pkg/sentry/fsimpl/ext/disklayout"
 )
 
 // These consts are for mocking the block map tree.

pkg/sentry/fsimpl/ext/directory.go

@@ -22,7 +22,7 @@ import (
 	"gvisor.dev/gvisor/pkg/log"
 	"gvisor.dev/gvisor/pkg/sentry/context"
 	"gvisor.dev/gvisor/pkg/sentry/fs"
-	"gvisor.dev/gvisor/pkg/sentry/fs/ext/disklayout"
+	"gvisor.dev/gvisor/pkg/sentry/fsimpl/ext/disklayout"
 	"gvisor.dev/gvisor/pkg/sentry/memmap"
 	"gvisor.dev/gvisor/pkg/sentry/vfs"
 	"gvisor.dev/gvisor/pkg/syserror"

pkg/sentry/fsimpl/ext/disklayout/BUILD

@@ -22,7 +22,7 @@ go_library(
         "superblock_old.go",
         "test_utils.go",
     ],
-    importpath = "gvisor.dev/gvisor/pkg/sentry/fs/ext/disklayout",
+    importpath = "gvisor.dev/gvisor/pkg/sentry/fsimpl/ext/disklayout",
     visibility = ["//pkg/sentry:internal"],
     deps = [
         "//pkg/abi/linux",