ext: vfs.FileDescriptionImpl and vfs.FilesystemImpl implementations.

- This also gets rid of pipes for now because pipe does not have vfs2 specific
  support yet.
- Added file path resolution logic.
- Fixes testing infrastructure.
- Does not include unit tests yet.

PiperOrigin-RevId: 262213950

1 files changed, 1 insertions, 23 deletions

diff --git a/pkg/sentry/syscalls/linux/sys_getdents.go b/pkg/sentry/syscalls/linux/sys_getdents.go
index 63e2c5a5d..912cbe4ff 100644
--- a/pkg/sentry/syscalls/linux/sys_getdents.go
+++ b/pkg/sentry/syscalls/linux/sys_getdents.go
@@ -120,7 +120,7 @@ func newDirent(width uint, name string, attr fs.DentAttr, offset uint64) *dirent
 				Ino: attr.InodeID,
 				Off: offset,
 			},
-			Typ: toType(attr.Type),
+			Typ: fs.ToDirentType(attr.Type),
 		},
 		Name: []byte(name),
 	}
@@ -142,28 +142,6 @@ func smallestDirent64(a arch.Context) uint {
 	return uint(binary.Size(d.Hdr)) + a.Width()
 }
 
-// toType converts an fs.InodeOperationsInfo to a linux dirent typ field.
-func toType(nodeType fs.InodeType) uint8 {
-	switch nodeType {
-	case fs.RegularFile, fs.SpecialFile:
-		return linux.DT_REG
-	case fs.Symlink:
-		return linux.DT_LNK
-	case fs.Directory, fs.SpecialDirectory:
-		return linux.DT_DIR
-	case fs.Pipe:
-		return linux.DT_FIFO
-	case fs.CharacterDevice:
-		return linux.DT_CHR
-	case fs.BlockDevice:
-		return linux.DT_BLK
-	case fs.Socket:
-		return linux.DT_SOCK
-	default:
-		return linux.DT_UNKNOWN
-	}
-}
-
 // padRec pads the name field until the rec length is a multiple of the width,
 // which must be a power of 2. It returns the padded rec length.
 func (d *dirent) padRec(width int) uint16 {