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-rw-r--r--pkg/sentry/fsimpl/gofer/BUILD95
-rw-r--r--pkg/sentry/fsimpl/gofer/dentry_list.go221
-rw-r--r--pkg/sentry/fsimpl/gofer/fstree.go55
-rw-r--r--pkg/sentry/fsimpl/gofer/gofer_state_autogen.go608
-rw-r--r--pkg/sentry/fsimpl/gofer/gofer_test.go68
5 files changed, 884 insertions, 163 deletions
diff --git a/pkg/sentry/fsimpl/gofer/BUILD b/pkg/sentry/fsimpl/gofer/BUILD
deleted file mode 100644
index 807b6ed1f..000000000
--- a/pkg/sentry/fsimpl/gofer/BUILD
+++ /dev/null
@@ -1,95 +0,0 @@
-load("//tools:defs.bzl", "go_library", "go_test")
-load("//tools/go_generics:defs.bzl", "go_template_instance")
-
-licenses(["notice"])
-
-go_template_instance(
- name = "dentry_list",
- out = "dentry_list.go",
- package = "gofer",
- prefix = "dentry",
- template = "//pkg/ilist:generic_list",
- types = {
- "Element": "*dentry",
- "Linker": "*dentry",
- },
-)
-
-go_template_instance(
- name = "fstree",
- out = "fstree.go",
- package = "gofer",
- prefix = "generic",
- template = "//pkg/sentry/vfs/genericfstree:generic_fstree",
- types = {
- "Dentry": "dentry",
- },
-)
-
-go_library(
- name = "gofer",
- srcs = [
- "dentry_list.go",
- "directory.go",
- "filesystem.go",
- "fstree.go",
- "gofer.go",
- "handle.go",
- "host_named_pipe.go",
- "p9file.go",
- "regular_file.go",
- "save_restore.go",
- "socket.go",
- "special_file.go",
- "symlink.go",
- "time.go",
- ],
- visibility = ["//pkg/sentry:internal"],
- deps = [
- "//pkg/abi/linux",
- "//pkg/context",
- "//pkg/fd",
- "//pkg/fdnotifier",
- "//pkg/fspath",
- "//pkg/log",
- "//pkg/p9",
- "//pkg/refs",
- "//pkg/refsvfs2",
- "//pkg/safemem",
- "//pkg/sentry/fs/fsutil",
- "//pkg/sentry/fs/lock",
- "//pkg/sentry/fsimpl/host",
- "//pkg/sentry/fsmetric",
- "//pkg/sentry/hostfd",
- "//pkg/sentry/kernel",
- "//pkg/sentry/kernel/auth",
- "//pkg/sentry/kernel/pipe",
- "//pkg/sentry/kernel/time",
- "//pkg/sentry/memmap",
- "//pkg/sentry/pgalloc",
- "//pkg/sentry/platform",
- "//pkg/sentry/socket/control",
- "//pkg/sentry/socket/unix",
- "//pkg/sentry/socket/unix/transport",
- "//pkg/sentry/usage",
- "//pkg/sentry/vfs",
- "//pkg/sync",
- "//pkg/syserr",
- "//pkg/syserror",
- "//pkg/unet",
- "//pkg/usermem",
- "//pkg/waiter",
- "@org_golang_x_sys//unix:go_default_library",
- ],
-)
-
-go_test(
- name = "gofer_test",
- srcs = ["gofer_test.go"],
- library = ":gofer",
- deps = [
- "//pkg/p9",
- "//pkg/sentry/contexttest",
- "//pkg/sentry/pgalloc",
- ],
-)
diff --git a/pkg/sentry/fsimpl/gofer/dentry_list.go b/pkg/sentry/fsimpl/gofer/dentry_list.go
new file mode 100644
index 000000000..2e43b8e02
--- /dev/null
+++ b/pkg/sentry/fsimpl/gofer/dentry_list.go
@@ -0,0 +1,221 @@
+package gofer
+
+// ElementMapper provides an identity mapping by default.
+//
+// This can be replaced to provide a struct that maps elements to linker
+// objects, if they are not the same. An ElementMapper is not typically
+// required if: Linker is left as is, Element is left as is, or Linker and
+// Element are the same type.
+type dentryElementMapper struct{}
+
+// linkerFor maps an Element to a Linker.
+//
+// This default implementation should be inlined.
+//
+//go:nosplit
+func (dentryElementMapper) linkerFor(elem *dentry) *dentry { return elem }
+
+// List is an intrusive list. Entries can be added to or removed from the list
+// in O(1) time and with no additional memory allocations.
+//
+// The zero value for List is an empty list ready to use.
+//
+// To iterate over a list (where l is a List):
+// for e := l.Front(); e != nil; e = e.Next() {
+// // do something with e.
+// }
+//
+// +stateify savable
+type dentryList struct {
+ head *dentry
+ tail *dentry
+}
+
+// Reset resets list l to the empty state.
+func (l *dentryList) Reset() {
+ l.head = nil
+ l.tail = nil
+}
+
+// Empty returns true iff the list is empty.
+//
+//go:nosplit
+func (l *dentryList) Empty() bool {
+ return l.head == nil
+}
+
+// Front returns the first element of list l or nil.
+//
+//go:nosplit
+func (l *dentryList) Front() *dentry {
+ return l.head
+}
+
+// Back returns the last element of list l or nil.
+//
+//go:nosplit
+func (l *dentryList) Back() *dentry {
+ return l.tail
+}
+
+// Len returns the number of elements in the list.
+//
+// NOTE: This is an O(n) operation.
+//
+//go:nosplit
+func (l *dentryList) Len() (count int) {
+ for e := l.Front(); e != nil; e = (dentryElementMapper{}.linkerFor(e)).Next() {
+ count++
+ }
+ return count
+}
+
+// PushFront inserts the element e at the front of list l.
+//
+//go:nosplit
+func (l *dentryList) PushFront(e *dentry) {
+ linker := dentryElementMapper{}.linkerFor(e)
+ linker.SetNext(l.head)
+ linker.SetPrev(nil)
+ if l.head != nil {
+ dentryElementMapper{}.linkerFor(l.head).SetPrev(e)
+ } else {
+ l.tail = e
+ }
+
+ l.head = e
+}
+
+// PushBack inserts the element e at the back of list l.
+//
+//go:nosplit
+func (l *dentryList) PushBack(e *dentry) {
+ linker := dentryElementMapper{}.linkerFor(e)
+ linker.SetNext(nil)
+ linker.SetPrev(l.tail)
+ if l.tail != nil {
+ dentryElementMapper{}.linkerFor(l.tail).SetNext(e)
+ } else {
+ l.head = e
+ }
+
+ l.tail = e
+}
+
+// PushBackList inserts list m at the end of list l, emptying m.
+//
+//go:nosplit
+func (l *dentryList) PushBackList(m *dentryList) {
+ if l.head == nil {
+ l.head = m.head
+ l.tail = m.tail
+ } else if m.head != nil {
+ dentryElementMapper{}.linkerFor(l.tail).SetNext(m.head)
+ dentryElementMapper{}.linkerFor(m.head).SetPrev(l.tail)
+
+ l.tail = m.tail
+ }
+ m.head = nil
+ m.tail = nil
+}
+
+// InsertAfter inserts e after b.
+//
+//go:nosplit
+func (l *dentryList) InsertAfter(b, e *dentry) {
+ bLinker := dentryElementMapper{}.linkerFor(b)
+ eLinker := dentryElementMapper{}.linkerFor(e)
+
+ a := bLinker.Next()
+
+ eLinker.SetNext(a)
+ eLinker.SetPrev(b)
+ bLinker.SetNext(e)
+
+ if a != nil {
+ dentryElementMapper{}.linkerFor(a).SetPrev(e)
+ } else {
+ l.tail = e
+ }
+}
+
+// InsertBefore inserts e before a.
+//
+//go:nosplit
+func (l *dentryList) InsertBefore(a, e *dentry) {
+ aLinker := dentryElementMapper{}.linkerFor(a)
+ eLinker := dentryElementMapper{}.linkerFor(e)
+
+ b := aLinker.Prev()
+ eLinker.SetNext(a)
+ eLinker.SetPrev(b)
+ aLinker.SetPrev(e)
+
+ if b != nil {
+ dentryElementMapper{}.linkerFor(b).SetNext(e)
+ } else {
+ l.head = e
+ }
+}
+
+// Remove removes e from l.
+//
+//go:nosplit
+func (l *dentryList) Remove(e *dentry) {
+ linker := dentryElementMapper{}.linkerFor(e)
+ prev := linker.Prev()
+ next := linker.Next()
+
+ if prev != nil {
+ dentryElementMapper{}.linkerFor(prev).SetNext(next)
+ } else if l.head == e {
+ l.head = next
+ }
+
+ if next != nil {
+ dentryElementMapper{}.linkerFor(next).SetPrev(prev)
+ } else if l.tail == e {
+ l.tail = prev
+ }
+
+ linker.SetNext(nil)
+ linker.SetPrev(nil)
+}
+
+// Entry is a default implementation of Linker. Users can add anonymous fields
+// of this type to their structs to make them automatically implement the
+// methods needed by List.
+//
+// +stateify savable
+type dentryEntry struct {
+ next *dentry
+ prev *dentry
+}
+
+// Next returns the entry that follows e in the list.
+//
+//go:nosplit
+func (e *dentryEntry) Next() *dentry {
+ return e.next
+}
+
+// Prev returns the entry that precedes e in the list.
+//
+//go:nosplit
+func (e *dentryEntry) Prev() *dentry {
+ return e.prev
+}
+
+// SetNext assigns 'entry' as the entry that follows e in the list.
+//
+//go:nosplit
+func (e *dentryEntry) SetNext(elem *dentry) {
+ e.next = elem
+}
+
+// SetPrev assigns 'entry' as the entry that precedes e in the list.
+//
+//go:nosplit
+func (e *dentryEntry) SetPrev(elem *dentry) {
+ e.prev = elem
+}
diff --git a/pkg/sentry/fsimpl/gofer/fstree.go b/pkg/sentry/fsimpl/gofer/fstree.go
new file mode 100644
index 000000000..6e43d4a4b
--- /dev/null
+++ b/pkg/sentry/fsimpl/gofer/fstree.go
@@ -0,0 +1,55 @@
+package gofer
+
+import (
+ "gvisor.dev/gvisor/pkg/fspath"
+ "gvisor.dev/gvisor/pkg/sentry/vfs"
+)
+
+// IsAncestorDentry returns true if d is an ancestor of d2; that is, d is
+// either d2's parent or an ancestor of d2's parent.
+func genericIsAncestorDentry(d, d2 *dentry) bool {
+ for d2 != nil {
+ if d2.parent == d {
+ return true
+ }
+ if d2.parent == d2 {
+ return false
+ }
+ d2 = d2.parent
+ }
+ return false
+}
+
+// ParentOrSelf returns d.parent. If d.parent is nil, ParentOrSelf returns d.
+func genericParentOrSelf(d *dentry) *dentry {
+ if d.parent != nil {
+ return d.parent
+ }
+ return d
+}
+
+// PrependPath is a generic implementation of FilesystemImpl.PrependPath().
+func genericPrependPath(vfsroot vfs.VirtualDentry, mnt *vfs.Mount, d *dentry, b *fspath.Builder) error {
+ for {
+ if mnt == vfsroot.Mount() && &d.vfsd == vfsroot.Dentry() {
+ return vfs.PrependPathAtVFSRootError{}
+ }
+ if mnt != nil && &d.vfsd == mnt.Root() {
+ return nil
+ }
+ if d.parent == nil {
+ return vfs.PrependPathAtNonMountRootError{}
+ }
+ b.PrependComponent(d.name)
+ d = d.parent
+ }
+}
+
+// DebugPathname returns a pathname to d relative to its filesystem root.
+// DebugPathname does not correspond to any Linux function; it's used to
+// generate dentry pathnames for debugging.
+func genericDebugPathname(d *dentry) string {
+ var b fspath.Builder
+ _ = genericPrependPath(vfs.VirtualDentry{}, nil, d, &b)
+ return b.String()
+}
diff --git a/pkg/sentry/fsimpl/gofer/gofer_state_autogen.go b/pkg/sentry/fsimpl/gofer/gofer_state_autogen.go
new file mode 100644
index 000000000..11635f249
--- /dev/null
+++ b/pkg/sentry/fsimpl/gofer/gofer_state_autogen.go
@@ -0,0 +1,608 @@
+// automatically generated by stateify.
+
+package gofer
+
+import (
+ "gvisor.dev/gvisor/pkg/state"
+)
+
+func (l *dentryList) StateTypeName() string {
+ return "pkg/sentry/fsimpl/gofer.dentryList"
+}
+
+func (l *dentryList) StateFields() []string {
+ return []string{
+ "head",
+ "tail",
+ }
+}
+
+func (l *dentryList) beforeSave() {}
+
+// +checklocksignore
+func (l *dentryList) StateSave(stateSinkObject state.Sink) {
+ l.beforeSave()
+ stateSinkObject.Save(0, &l.head)
+ stateSinkObject.Save(1, &l.tail)
+}
+
+func (l *dentryList) afterLoad() {}
+
+// +checklocksignore
+func (l *dentryList) StateLoad(stateSourceObject state.Source) {
+ stateSourceObject.Load(0, &l.head)
+ stateSourceObject.Load(1, &l.tail)
+}
+
+func (e *dentryEntry) StateTypeName() string {
+ return "pkg/sentry/fsimpl/gofer.dentryEntry"
+}
+
+func (e *dentryEntry) StateFields() []string {
+ return []string{
+ "next",
+ "prev",
+ }
+}
+
+func (e *dentryEntry) beforeSave() {}
+
+// +checklocksignore
+func (e *dentryEntry) StateSave(stateSinkObject state.Sink) {
+ e.beforeSave()
+ stateSinkObject.Save(0, &e.next)
+ stateSinkObject.Save(1, &e.prev)
+}
+
+func (e *dentryEntry) afterLoad() {}
+
+// +checklocksignore
+func (e *dentryEntry) StateLoad(stateSourceObject state.Source) {
+ stateSourceObject.Load(0, &e.next)
+ stateSourceObject.Load(1, &e.prev)
+}
+
+func (fd *directoryFD) StateTypeName() string {
+ return "pkg/sentry/fsimpl/gofer.directoryFD"
+}
+
+func (fd *directoryFD) StateFields() []string {
+ return []string{
+ "fileDescription",
+ "DirectoryFileDescriptionDefaultImpl",
+ "off",
+ "dirents",
+ }
+}
+
+func (fd *directoryFD) beforeSave() {}
+
+// +checklocksignore
+func (fd *directoryFD) StateSave(stateSinkObject state.Sink) {
+ fd.beforeSave()
+ stateSinkObject.Save(0, &fd.fileDescription)
+ stateSinkObject.Save(1, &fd.DirectoryFileDescriptionDefaultImpl)
+ stateSinkObject.Save(2, &fd.off)
+ stateSinkObject.Save(3, &fd.dirents)
+}
+
+func (fd *directoryFD) afterLoad() {}
+
+// +checklocksignore
+func (fd *directoryFD) StateLoad(stateSourceObject state.Source) {
+ stateSourceObject.Load(0, &fd.fileDescription)
+ stateSourceObject.Load(1, &fd.DirectoryFileDescriptionDefaultImpl)
+ stateSourceObject.Load(2, &fd.off)
+ stateSourceObject.Load(3, &fd.dirents)
+}
+
+func (fstype *FilesystemType) StateTypeName() string {
+ return "pkg/sentry/fsimpl/gofer.FilesystemType"
+}
+
+func (fstype *FilesystemType) StateFields() []string {
+ return []string{}
+}
+
+func (fstype *FilesystemType) beforeSave() {}
+
+// +checklocksignore
+func (fstype *FilesystemType) StateSave(stateSinkObject state.Sink) {
+ fstype.beforeSave()
+}
+
+func (fstype *FilesystemType) afterLoad() {}
+
+// +checklocksignore
+func (fstype *FilesystemType) StateLoad(stateSourceObject state.Source) {
+}
+
+func (fs *filesystem) StateTypeName() string {
+ return "pkg/sentry/fsimpl/gofer.filesystem"
+}
+
+func (fs *filesystem) StateFields() []string {
+ return []string{
+ "vfsfs",
+ "mfp",
+ "opts",
+ "iopts",
+ "clock",
+ "devMinor",
+ "root",
+ "cachedDentries",
+ "cachedDentriesLen",
+ "syncableDentries",
+ "specialFileFDs",
+ "lastIno",
+ "savedDentryRW",
+ "released",
+ }
+}
+
+func (fs *filesystem) beforeSave() {}
+
+// +checklocksignore
+func (fs *filesystem) StateSave(stateSinkObject state.Sink) {
+ fs.beforeSave()
+ stateSinkObject.Save(0, &fs.vfsfs)
+ stateSinkObject.Save(1, &fs.mfp)
+ stateSinkObject.Save(2, &fs.opts)
+ stateSinkObject.Save(3, &fs.iopts)
+ stateSinkObject.Save(4, &fs.clock)
+ stateSinkObject.Save(5, &fs.devMinor)
+ stateSinkObject.Save(6, &fs.root)
+ stateSinkObject.Save(7, &fs.cachedDentries)
+ stateSinkObject.Save(8, &fs.cachedDentriesLen)
+ stateSinkObject.Save(9, &fs.syncableDentries)
+ stateSinkObject.Save(10, &fs.specialFileFDs)
+ stateSinkObject.Save(11, &fs.lastIno)
+ stateSinkObject.Save(12, &fs.savedDentryRW)
+ stateSinkObject.Save(13, &fs.released)
+}
+
+func (fs *filesystem) afterLoad() {}
+
+// +checklocksignore
+func (fs *filesystem) StateLoad(stateSourceObject state.Source) {
+ stateSourceObject.Load(0, &fs.vfsfs)
+ stateSourceObject.Load(1, &fs.mfp)
+ stateSourceObject.Load(2, &fs.opts)
+ stateSourceObject.Load(3, &fs.iopts)
+ stateSourceObject.Load(4, &fs.clock)
+ stateSourceObject.Load(5, &fs.devMinor)
+ stateSourceObject.Load(6, &fs.root)
+ stateSourceObject.Load(7, &fs.cachedDentries)
+ stateSourceObject.Load(8, &fs.cachedDentriesLen)
+ stateSourceObject.Load(9, &fs.syncableDentries)
+ stateSourceObject.Load(10, &fs.specialFileFDs)
+ stateSourceObject.Load(11, &fs.lastIno)
+ stateSourceObject.Load(12, &fs.savedDentryRW)
+ stateSourceObject.Load(13, &fs.released)
+}
+
+func (f *filesystemOptions) StateTypeName() string {
+ return "pkg/sentry/fsimpl/gofer.filesystemOptions"
+}
+
+func (f *filesystemOptions) StateFields() []string {
+ return []string{
+ "fd",
+ "aname",
+ "interop",
+ "dfltuid",
+ "dfltgid",
+ "msize",
+ "version",
+ "maxCachedDentries",
+ "forcePageCache",
+ "limitHostFDTranslation",
+ "overlayfsStaleRead",
+ "regularFilesUseSpecialFileFD",
+ }
+}
+
+func (f *filesystemOptions) beforeSave() {}
+
+// +checklocksignore
+func (f *filesystemOptions) StateSave(stateSinkObject state.Sink) {
+ f.beforeSave()
+ stateSinkObject.Save(0, &f.fd)
+ stateSinkObject.Save(1, &f.aname)
+ stateSinkObject.Save(2, &f.interop)
+ stateSinkObject.Save(3, &f.dfltuid)
+ stateSinkObject.Save(4, &f.dfltgid)
+ stateSinkObject.Save(5, &f.msize)
+ stateSinkObject.Save(6, &f.version)
+ stateSinkObject.Save(7, &f.maxCachedDentries)
+ stateSinkObject.Save(8, &f.forcePageCache)
+ stateSinkObject.Save(9, &f.limitHostFDTranslation)
+ stateSinkObject.Save(10, &f.overlayfsStaleRead)
+ stateSinkObject.Save(11, &f.regularFilesUseSpecialFileFD)
+}
+
+func (f *filesystemOptions) afterLoad() {}
+
+// +checklocksignore
+func (f *filesystemOptions) StateLoad(stateSourceObject state.Source) {
+ stateSourceObject.Load(0, &f.fd)
+ stateSourceObject.Load(1, &f.aname)
+ stateSourceObject.Load(2, &f.interop)
+ stateSourceObject.Load(3, &f.dfltuid)
+ stateSourceObject.Load(4, &f.dfltgid)
+ stateSourceObject.Load(5, &f.msize)
+ stateSourceObject.Load(6, &f.version)
+ stateSourceObject.Load(7, &f.maxCachedDentries)
+ stateSourceObject.Load(8, &f.forcePageCache)
+ stateSourceObject.Load(9, &f.limitHostFDTranslation)
+ stateSourceObject.Load(10, &f.overlayfsStaleRead)
+ stateSourceObject.Load(11, &f.regularFilesUseSpecialFileFD)
+}
+
+func (i *InteropMode) StateTypeName() string {
+ return "pkg/sentry/fsimpl/gofer.InteropMode"
+}
+
+func (i *InteropMode) StateFields() []string {
+ return nil
+}
+
+func (i *InternalFilesystemOptions) StateTypeName() string {
+ return "pkg/sentry/fsimpl/gofer.InternalFilesystemOptions"
+}
+
+func (i *InternalFilesystemOptions) StateFields() []string {
+ return []string{
+ "UniqueID",
+ "LeakConnection",
+ "OpenSocketsByConnecting",
+ }
+}
+
+func (i *InternalFilesystemOptions) beforeSave() {}
+
+// +checklocksignore
+func (i *InternalFilesystemOptions) StateSave(stateSinkObject state.Sink) {
+ i.beforeSave()
+ stateSinkObject.Save(0, &i.UniqueID)
+ stateSinkObject.Save(1, &i.LeakConnection)
+ stateSinkObject.Save(2, &i.OpenSocketsByConnecting)
+}
+
+func (i *InternalFilesystemOptions) afterLoad() {}
+
+// +checklocksignore
+func (i *InternalFilesystemOptions) StateLoad(stateSourceObject state.Source) {
+ stateSourceObject.Load(0, &i.UniqueID)
+ stateSourceObject.Load(1, &i.LeakConnection)
+ stateSourceObject.Load(2, &i.OpenSocketsByConnecting)
+}
+
+func (d *dentry) StateTypeName() string {
+ return "pkg/sentry/fsimpl/gofer.dentry"
+}
+
+func (d *dentry) StateFields() []string {
+ return []string{
+ "vfsd",
+ "refs",
+ "fs",
+ "parent",
+ "name",
+ "qidPath",
+ "deleted",
+ "cached",
+ "dentryEntry",
+ "children",
+ "syntheticChildren",
+ "dirents",
+ "ino",
+ "mode",
+ "uid",
+ "gid",
+ "blockSize",
+ "atime",
+ "mtime",
+ "ctime",
+ "btime",
+ "size",
+ "atimeDirty",
+ "mtimeDirty",
+ "nlink",
+ "mappings",
+ "cache",
+ "dirty",
+ "pf",
+ "haveTarget",
+ "target",
+ "endpoint",
+ "pipe",
+ "locks",
+ "watches",
+ }
+}
+
+// +checklocksignore
+func (d *dentry) StateSave(stateSinkObject state.Sink) {
+ d.beforeSave()
+ stateSinkObject.Save(0, &d.vfsd)
+ stateSinkObject.Save(1, &d.refs)
+ stateSinkObject.Save(2, &d.fs)
+ stateSinkObject.Save(3, &d.parent)
+ stateSinkObject.Save(4, &d.name)
+ stateSinkObject.Save(5, &d.qidPath)
+ stateSinkObject.Save(6, &d.deleted)
+ stateSinkObject.Save(7, &d.cached)
+ stateSinkObject.Save(8, &d.dentryEntry)
+ stateSinkObject.Save(9, &d.children)
+ stateSinkObject.Save(10, &d.syntheticChildren)
+ stateSinkObject.Save(11, &d.dirents)
+ stateSinkObject.Save(12, &d.ino)
+ stateSinkObject.Save(13, &d.mode)
+ stateSinkObject.Save(14, &d.uid)
+ stateSinkObject.Save(15, &d.gid)
+ stateSinkObject.Save(16, &d.blockSize)
+ stateSinkObject.Save(17, &d.atime)
+ stateSinkObject.Save(18, &d.mtime)
+ stateSinkObject.Save(19, &d.ctime)
+ stateSinkObject.Save(20, &d.btime)
+ stateSinkObject.Save(21, &d.size)
+ stateSinkObject.Save(22, &d.atimeDirty)
+ stateSinkObject.Save(23, &d.mtimeDirty)
+ stateSinkObject.Save(24, &d.nlink)
+ stateSinkObject.Save(25, &d.mappings)
+ stateSinkObject.Save(26, &d.cache)
+ stateSinkObject.Save(27, &d.dirty)
+ stateSinkObject.Save(28, &d.pf)
+ stateSinkObject.Save(29, &d.haveTarget)
+ stateSinkObject.Save(30, &d.target)
+ stateSinkObject.Save(31, &d.endpoint)
+ stateSinkObject.Save(32, &d.pipe)
+ stateSinkObject.Save(33, &d.locks)
+ stateSinkObject.Save(34, &d.watches)
+}
+
+// +checklocksignore
+func (d *dentry) StateLoad(stateSourceObject state.Source) {
+ stateSourceObject.Load(0, &d.vfsd)
+ stateSourceObject.Load(1, &d.refs)
+ stateSourceObject.Load(2, &d.fs)
+ stateSourceObject.Load(3, &d.parent)
+ stateSourceObject.Load(4, &d.name)
+ stateSourceObject.Load(5, &d.qidPath)
+ stateSourceObject.Load(6, &d.deleted)
+ stateSourceObject.Load(7, &d.cached)
+ stateSourceObject.Load(8, &d.dentryEntry)
+ stateSourceObject.Load(9, &d.children)
+ stateSourceObject.Load(10, &d.syntheticChildren)
+ stateSourceObject.Load(11, &d.dirents)
+ stateSourceObject.Load(12, &d.ino)
+ stateSourceObject.Load(13, &d.mode)
+ stateSourceObject.Load(14, &d.uid)
+ stateSourceObject.Load(15, &d.gid)
+ stateSourceObject.Load(16, &d.blockSize)
+ stateSourceObject.Load(17, &d.atime)
+ stateSourceObject.Load(18, &d.mtime)
+ stateSourceObject.Load(19, &d.ctime)
+ stateSourceObject.Load(20, &d.btime)
+ stateSourceObject.Load(21, &d.size)
+ stateSourceObject.Load(22, &d.atimeDirty)
+ stateSourceObject.Load(23, &d.mtimeDirty)
+ stateSourceObject.Load(24, &d.nlink)
+ stateSourceObject.Load(25, &d.mappings)
+ stateSourceObject.Load(26, &d.cache)
+ stateSourceObject.Load(27, &d.dirty)
+ stateSourceObject.Load(28, &d.pf)
+ stateSourceObject.Load(29, &d.haveTarget)
+ stateSourceObject.Load(30, &d.target)
+ stateSourceObject.Load(31, &d.endpoint)
+ stateSourceObject.Load(32, &d.pipe)
+ stateSourceObject.Load(33, &d.locks)
+ stateSourceObject.Load(34, &d.watches)
+ stateSourceObject.AfterLoad(d.afterLoad)
+}
+
+func (fd *fileDescription) StateTypeName() string {
+ return "pkg/sentry/fsimpl/gofer.fileDescription"
+}
+
+func (fd *fileDescription) StateFields() []string {
+ return []string{
+ "vfsfd",
+ "FileDescriptionDefaultImpl",
+ "LockFD",
+ }
+}
+
+func (fd *fileDescription) beforeSave() {}
+
+// +checklocksignore
+func (fd *fileDescription) StateSave(stateSinkObject state.Sink) {
+ fd.beforeSave()
+ stateSinkObject.Save(0, &fd.vfsfd)
+ stateSinkObject.Save(1, &fd.FileDescriptionDefaultImpl)
+ stateSinkObject.Save(2, &fd.LockFD)
+}
+
+func (fd *fileDescription) afterLoad() {}
+
+// +checklocksignore
+func (fd *fileDescription) StateLoad(stateSourceObject state.Source) {
+ stateSourceObject.Load(0, &fd.vfsfd)
+ stateSourceObject.Load(1, &fd.FileDescriptionDefaultImpl)
+ stateSourceObject.Load(2, &fd.LockFD)
+}
+
+func (fd *regularFileFD) StateTypeName() string {
+ return "pkg/sentry/fsimpl/gofer.regularFileFD"
+}
+
+func (fd *regularFileFD) StateFields() []string {
+ return []string{
+ "fileDescription",
+ "off",
+ }
+}
+
+func (fd *regularFileFD) beforeSave() {}
+
+// +checklocksignore
+func (fd *regularFileFD) StateSave(stateSinkObject state.Sink) {
+ fd.beforeSave()
+ stateSinkObject.Save(0, &fd.fileDescription)
+ stateSinkObject.Save(1, &fd.off)
+}
+
+func (fd *regularFileFD) afterLoad() {}
+
+// +checklocksignore
+func (fd *regularFileFD) StateLoad(stateSourceObject state.Source) {
+ stateSourceObject.Load(0, &fd.fileDescription)
+ stateSourceObject.Load(1, &fd.off)
+}
+
+func (d *dentryPlatformFile) StateTypeName() string {
+ return "pkg/sentry/fsimpl/gofer.dentryPlatformFile"
+}
+
+func (d *dentryPlatformFile) StateFields() []string {
+ return []string{
+ "dentry",
+ "fdRefs",
+ "hostFileMapper",
+ }
+}
+
+func (d *dentryPlatformFile) beforeSave() {}
+
+// +checklocksignore
+func (d *dentryPlatformFile) StateSave(stateSinkObject state.Sink) {
+ d.beforeSave()
+ stateSinkObject.Save(0, &d.dentry)
+ stateSinkObject.Save(1, &d.fdRefs)
+ stateSinkObject.Save(2, &d.hostFileMapper)
+}
+
+// +checklocksignore
+func (d *dentryPlatformFile) StateLoad(stateSourceObject state.Source) {
+ stateSourceObject.Load(0, &d.dentry)
+ stateSourceObject.Load(1, &d.fdRefs)
+ stateSourceObject.Load(2, &d.hostFileMapper)
+ stateSourceObject.AfterLoad(d.afterLoad)
+}
+
+func (s *savedDentryRW) StateTypeName() string {
+ return "pkg/sentry/fsimpl/gofer.savedDentryRW"
+}
+
+func (s *savedDentryRW) StateFields() []string {
+ return []string{
+ "read",
+ "write",
+ }
+}
+
+func (s *savedDentryRW) beforeSave() {}
+
+// +checklocksignore
+func (s *savedDentryRW) StateSave(stateSinkObject state.Sink) {
+ s.beforeSave()
+ stateSinkObject.Save(0, &s.read)
+ stateSinkObject.Save(1, &s.write)
+}
+
+func (s *savedDentryRW) afterLoad() {}
+
+// +checklocksignore
+func (s *savedDentryRW) StateLoad(stateSourceObject state.Source) {
+ stateSourceObject.Load(0, &s.read)
+ stateSourceObject.Load(1, &s.write)
+}
+
+func (e *endpoint) StateTypeName() string {
+ return "pkg/sentry/fsimpl/gofer.endpoint"
+}
+
+func (e *endpoint) StateFields() []string {
+ return []string{
+ "dentry",
+ "path",
+ }
+}
+
+func (e *endpoint) beforeSave() {}
+
+// +checklocksignore
+func (e *endpoint) StateSave(stateSinkObject state.Sink) {
+ e.beforeSave()
+ stateSinkObject.Save(0, &e.dentry)
+ stateSinkObject.Save(1, &e.path)
+}
+
+func (e *endpoint) afterLoad() {}
+
+// +checklocksignore
+func (e *endpoint) StateLoad(stateSourceObject state.Source) {
+ stateSourceObject.Load(0, &e.dentry)
+ stateSourceObject.Load(1, &e.path)
+}
+
+func (fd *specialFileFD) StateTypeName() string {
+ return "pkg/sentry/fsimpl/gofer.specialFileFD"
+}
+
+func (fd *specialFileFD) StateFields() []string {
+ return []string{
+ "fileDescription",
+ "isRegularFile",
+ "seekable",
+ "queue",
+ "off",
+ "haveBuf",
+ "buf",
+ }
+}
+
+func (fd *specialFileFD) beforeSave() {}
+
+// +checklocksignore
+func (fd *specialFileFD) StateSave(stateSinkObject state.Sink) {
+ fd.beforeSave()
+ stateSinkObject.Save(0, &fd.fileDescription)
+ stateSinkObject.Save(1, &fd.isRegularFile)
+ stateSinkObject.Save(2, &fd.seekable)
+ stateSinkObject.Save(3, &fd.queue)
+ stateSinkObject.Save(4, &fd.off)
+ stateSinkObject.Save(5, &fd.haveBuf)
+ stateSinkObject.Save(6, &fd.buf)
+}
+
+// +checklocksignore
+func (fd *specialFileFD) StateLoad(stateSourceObject state.Source) {
+ stateSourceObject.Load(0, &fd.fileDescription)
+ stateSourceObject.Load(1, &fd.isRegularFile)
+ stateSourceObject.Load(2, &fd.seekable)
+ stateSourceObject.Load(3, &fd.queue)
+ stateSourceObject.Load(4, &fd.off)
+ stateSourceObject.Load(5, &fd.haveBuf)
+ stateSourceObject.Load(6, &fd.buf)
+ stateSourceObject.AfterLoad(fd.afterLoad)
+}
+
+func init() {
+ state.Register((*dentryList)(nil))
+ state.Register((*dentryEntry)(nil))
+ state.Register((*directoryFD)(nil))
+ state.Register((*FilesystemType)(nil))
+ state.Register((*filesystem)(nil))
+ state.Register((*filesystemOptions)(nil))
+ state.Register((*InteropMode)(nil))
+ state.Register((*InternalFilesystemOptions)(nil))
+ state.Register((*dentry)(nil))
+ state.Register((*fileDescription)(nil))
+ state.Register((*regularFileFD)(nil))
+ state.Register((*dentryPlatformFile)(nil))
+ state.Register((*savedDentryRW)(nil))
+ state.Register((*endpoint)(nil))
+ state.Register((*specialFileFD)(nil))
+}
diff --git a/pkg/sentry/fsimpl/gofer/gofer_test.go b/pkg/sentry/fsimpl/gofer/gofer_test.go
deleted file mode 100644
index 76f08e252..000000000
--- a/pkg/sentry/fsimpl/gofer/gofer_test.go
+++ /dev/null
@@ -1,68 +0,0 @@
-// Copyright 2020 The gVisor Authors.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-// http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-package gofer
-
-import (
- "sync/atomic"
- "testing"
-
- "gvisor.dev/gvisor/pkg/p9"
- "gvisor.dev/gvisor/pkg/sentry/contexttest"
- "gvisor.dev/gvisor/pkg/sentry/pgalloc"
-)
-
-func TestDestroyIdempotent(t *testing.T) {
- ctx := contexttest.Context(t)
- fs := filesystem{
- mfp: pgalloc.MemoryFileProviderFromContext(ctx),
- opts: filesystemOptions{
- // Test relies on no dentry being held in the cache.
- maxCachedDentries: 0,
- },
- syncableDentries: make(map[*dentry]struct{}),
- inoByQIDPath: make(map[uint64]uint64),
- }
-
- attr := &p9.Attr{
- Mode: p9.ModeRegular,
- }
- mask := p9.AttrMask{
- Mode: true,
- Size: true,
- }
- parent, err := fs.newDentry(ctx, p9file{}, p9.QID{}, mask, attr)
- if err != nil {
- t.Fatalf("fs.newDentry(): %v", err)
- }
-
- child, err := fs.newDentry(ctx, p9file{}, p9.QID{}, mask, attr)
- if err != nil {
- t.Fatalf("fs.newDentry(): %v", err)
- }
- parent.cacheNewChildLocked(child, "child")
-
- fs.renameMu.Lock()
- defer fs.renameMu.Unlock()
- child.checkCachingLocked(ctx)
- if got := atomic.LoadInt64(&child.refs); got != -1 {
- t.Fatalf("child.refs=%d, want: -1", got)
- }
- // Parent will also be destroyed when child reference is removed.
- if got := atomic.LoadInt64(&parent.refs); got != -1 {
- t.Fatalf("parent.refs=%d, want: -1", got)
- }
- child.checkCachingLocked(ctx)
- child.checkCachingLocked(ctx)
-}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-06 03:38:33 +0000