diff options
Diffstat (limited to 'pkg/sentry/fs/tmpfs')
| -rw-r--r-- | pkg/sentry/fs/tmpfs/BUILD | 50 | ||||
| -rw-r--r-- | pkg/sentry/fs/tmpfs/file_test.go | 72 | ||||
| -rwxr-xr-x | pkg/sentry/fs/tmpfs/tmpfs_state_autogen.go | 108 |
3 files changed, 108 insertions, 122 deletions
diff --git a/pkg/sentry/fs/tmpfs/BUILD b/pkg/sentry/fs/tmpfs/BUILD deleted file mode 100644 index aa7199014..000000000 --- a/pkg/sentry/fs/tmpfs/BUILD +++ /dev/null @@ -1,50 +0,0 @@ -load("//tools:defs.bzl", "go_library", "go_test") - -package(licenses = ["notice"]) - -go_library( - name = "tmpfs", - srcs = [ - "device.go", - "file_regular.go", - "fs.go", - "inode_file.go", - "tmpfs.go", - ], - visibility = ["//pkg/sentry:internal"], - deps = [ - "//pkg/abi/linux", - "//pkg/context", - "//pkg/metric", - "//pkg/safemem", - "//pkg/sentry/device", - "//pkg/sentry/fs", - "//pkg/sentry/fs/fsutil", - "//pkg/sentry/fs/ramfs", - "//pkg/sentry/kernel", - "//pkg/sentry/kernel/auth", - "//pkg/sentry/kernel/pipe", - "//pkg/sentry/kernel/time", - "//pkg/sentry/memmap", - "//pkg/sentry/socket/unix/transport", - "//pkg/sentry/usage", - "//pkg/sync", - "//pkg/syserror", - "//pkg/usermem", - "//pkg/waiter", - ], -) - -go_test( - name = "tmpfs_test", - size = "small", - srcs = ["file_test.go"], - library = ":tmpfs", - deps = [ - "//pkg/context", - "//pkg/sentry/fs", - "//pkg/sentry/kernel/contexttest", - "//pkg/sentry/usage", - "//pkg/usermem", - ], -) diff --git a/pkg/sentry/fs/tmpfs/file_test.go b/pkg/sentry/fs/tmpfs/file_test.go deleted file mode 100644 index aaba35502..000000000 --- a/pkg/sentry/fs/tmpfs/file_test.go +++ /dev/null @@ -1,72 +0,0 @@ -// Copyright 2018 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 tmpfs - -import ( - "bytes" - "testing" - - "gvisor.dev/gvisor/pkg/context" - "gvisor.dev/gvisor/pkg/sentry/fs" - "gvisor.dev/gvisor/pkg/sentry/kernel/contexttest" - "gvisor.dev/gvisor/pkg/sentry/usage" - "gvisor.dev/gvisor/pkg/usermem" -) - -func newFileInode(ctx context.Context) *fs.Inode { - m := fs.NewCachingMountSource(ctx, &Filesystem{}, fs.MountSourceFlags{}) - iops := NewInMemoryFile(ctx, usage.Tmpfs, fs.WithCurrentTime(ctx, fs.UnstableAttr{})) - return fs.NewInode(ctx, iops, m, fs.StableAttr{ - DeviceID: tmpfsDevice.DeviceID(), - InodeID: tmpfsDevice.NextIno(), - BlockSize: usermem.PageSize, - Type: fs.RegularFile, - }) -} - -func newFile(ctx context.Context) *fs.File { - inode := newFileInode(ctx) - f, _ := inode.GetFile(ctx, fs.NewDirent(ctx, inode, "stub"), fs.FileFlags{Read: true, Write: true}) - return f -} - -// Allocate once, write twice. -func TestGrow(t *testing.T) { - ctx := contexttest.Context(t) - f := newFile(ctx) - defer f.DecRef() - - abuf := bytes.Repeat([]byte{'a'}, 68) - n, err := f.Pwritev(ctx, usermem.BytesIOSequence(abuf), 0) - if n != int64(len(abuf)) || err != nil { - t.Fatalf("Pwritev got (%d, %v) want (%d, nil)", n, err, len(abuf)) - } - - bbuf := bytes.Repeat([]byte{'b'}, 856) - n, err = f.Pwritev(ctx, usermem.BytesIOSequence(bbuf), 68) - if n != int64(len(bbuf)) || err != nil { - t.Fatalf("Pwritev got (%d, %v) want (%d, nil)", n, err, len(bbuf)) - } - - rbuf := make([]byte, len(abuf)+len(bbuf)) - n, err = f.Preadv(ctx, usermem.BytesIOSequence(rbuf), 0) - if n != int64(len(rbuf)) || err != nil { - t.Fatalf("Preadv got (%d, %v) want (%d, nil)", n, err, len(rbuf)) - } - - if want := append(abuf, bbuf...); !bytes.Equal(rbuf, want) { - t.Fatalf("Read %v, want %v", rbuf, want) - } -} diff --git a/pkg/sentry/fs/tmpfs/tmpfs_state_autogen.go b/pkg/sentry/fs/tmpfs/tmpfs_state_autogen.go new file mode 100755 index 000000000..7d73d1c77 --- /dev/null +++ b/pkg/sentry/fs/tmpfs/tmpfs_state_autogen.go @@ -0,0 +1,108 @@ +// automatically generated by stateify. + +package tmpfs + +import ( + "gvisor.dev/gvisor/pkg/state" +) + +func (x *regularFileOperations) beforeSave() {} +func (x *regularFileOperations) save(m state.Map) { + x.beforeSave() + m.Save("iops", &x.iops) +} + +func (x *regularFileOperations) afterLoad() {} +func (x *regularFileOperations) load(m state.Map) { + m.Load("iops", &x.iops) +} + +func (x *Filesystem) beforeSave() {} +func (x *Filesystem) save(m state.Map) { + x.beforeSave() +} + +func (x *Filesystem) afterLoad() {} +func (x *Filesystem) load(m state.Map) { +} + +func (x *fileInodeOperations) beforeSave() {} +func (x *fileInodeOperations) save(m state.Map) { + x.beforeSave() + m.Save("InodeSimpleExtendedAttributes", &x.InodeSimpleExtendedAttributes) + m.Save("kernel", &x.kernel) + m.Save("memUsage", &x.memUsage) + m.Save("attr", &x.attr) + m.Save("mappings", &x.mappings) + m.Save("writableMappingPages", &x.writableMappingPages) + m.Save("data", &x.data) + m.Save("seals", &x.seals) +} + +func (x *fileInodeOperations) afterLoad() {} +func (x *fileInodeOperations) load(m state.Map) { + m.Load("InodeSimpleExtendedAttributes", &x.InodeSimpleExtendedAttributes) + m.Load("kernel", &x.kernel) + m.Load("memUsage", &x.memUsage) + m.Load("attr", &x.attr) + m.Load("mappings", &x.mappings) + m.Load("writableMappingPages", &x.writableMappingPages) + m.Load("data", &x.data) + m.Load("seals", &x.seals) +} + +func (x *Dir) beforeSave() {} +func (x *Dir) save(m state.Map) { + x.beforeSave() + m.Save("ramfsDir", &x.ramfsDir) + m.Save("kernel", &x.kernel) +} + +func (x *Dir) load(m state.Map) { + m.Load("ramfsDir", &x.ramfsDir) + m.Load("kernel", &x.kernel) + m.AfterLoad(x.afterLoad) +} + +func (x *Symlink) beforeSave() {} +func (x *Symlink) save(m state.Map) { + x.beforeSave() + m.Save("Symlink", &x.Symlink) +} + +func (x *Symlink) afterLoad() {} +func (x *Symlink) load(m state.Map) { + m.Load("Symlink", &x.Symlink) +} + +func (x *Socket) beforeSave() {} +func (x *Socket) save(m state.Map) { + x.beforeSave() + m.Save("Socket", &x.Socket) +} + +func (x *Socket) afterLoad() {} +func (x *Socket) load(m state.Map) { + m.Load("Socket", &x.Socket) +} + +func (x *Fifo) beforeSave() {} +func (x *Fifo) save(m state.Map) { + x.beforeSave() + m.Save("InodeOperations", &x.InodeOperations) +} + +func (x *Fifo) afterLoad() {} +func (x *Fifo) load(m state.Map) { + m.Load("InodeOperations", &x.InodeOperations) +} + +func init() { + state.Register("tmpfs.regularFileOperations", (*regularFileOperations)(nil), state.Fns{Save: (*regularFileOperations).save, Load: (*regularFileOperations).load}) + state.Register("tmpfs.Filesystem", (*Filesystem)(nil), state.Fns{Save: (*Filesystem).save, Load: (*Filesystem).load}) + state.Register("tmpfs.fileInodeOperations", (*fileInodeOperations)(nil), state.Fns{Save: (*fileInodeOperations).save, Load: (*fileInodeOperations).load}) + state.Register("tmpfs.Dir", (*Dir)(nil), state.Fns{Save: (*Dir).save, Load: (*Dir).load}) + state.Register("tmpfs.Symlink", (*Symlink)(nil), state.Fns{Save: (*Symlink).save, Load: (*Symlink).load}) + state.Register("tmpfs.Socket", (*Socket)(nil), state.Fns{Save: (*Socket).save, Load: (*Socket).load}) + state.Register("tmpfs.Fifo", (*Fifo)(nil), state.Fns{Save: (*Fifo).save, Load: (*Fifo).load}) +} |