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Use the FileSystem interface in the samples.

geesefs-0-30-9
Aaron Jacobs 2015-03-25 09:35:51 +11:00
parent 54d3fee527 e1e438439c
commit eeac7182e5
5 changed files with 91 additions and 314 deletions
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71
samples/cachingfs/caching_fs.go
View File

@ -16,12 +16,12 @@ package cachingfs
import (
"fmt"
"io"
"os"
"time"
"github.com/jacobsa/fuse"
"github.com/jacobsa/fuse/fuseops"
"github.com/jacobsa/fuse/fuseutil"
"github.com/jacobsa/gcloud/syncutil"
)
@ -42,7 +42,7 @@ const (
// requests. It also exposes methods for renumbering inodes and updating mtimes
// that are useful in testing that these durations are honored.
type CachingFS interface {
fuse.Server
fuseutil.FileSystem
// Return the current inode ID of the file/directory with the given name.
FooID() fuseops.InodeID
@ -99,6 +99,8 @@ const (
)
type cachingFS struct {
fuseutil.NotImplementedFileSystem
/////////////////////////
// Constant data
/////////////////////////
@ -232,53 +234,18 @@ func (fs *cachingFS) SetMtime(mtime time.Time) {
fs.mtime = mtime
}
// LOCKS_EXCLUDED(fs.mu)
func (fs *cachingFS) ServeOps(c *fuse.Connection) {
for {
op, err := c.ReadOp()
if err == io.EOF {
break
}
if err != nil {
panic(err)
}
switch typed := op.(type) {
case *fuseops.InitOp:
fs.init(typed)
case *fuseops.LookUpInodeOp:
fs.lookUpInode(typed)
case *fuseops.GetInodeAttributesOp:
fs.getInodeAttributes(typed)
case *fuseops.OpenDirOp:
fs.openDir(typed)
case *fuseops.OpenFileOp:
fs.openFile(typed)
default:
typed.Respond(fuse.ENOSYS)
}
}
}
////////////////////////////////////////////////////////////////////////
// Op methods
// FileSystem methods
////////////////////////////////////////////////////////////////////////
func (fs *cachingFS) init(op *fuseops.InitOp) {
op.Respond(nil)
func (fs *cachingFS) Init(
op *fuseops.InitOp) (err error) {
return
}
// LOCKS_EXCLUDED(fs.mu)
func (fs *cachingFS) lookUpInode(op *fuseops.LookUpInodeOp) {
var err error
defer func() { op.Respond(err) }()
func (fs *cachingFS) LookUpInode(
op *fuseops.LookUpInodeOp) (err error) {
fs.mu.Lock()
defer fs.mu.Unlock()
@ -331,10 +298,8 @@ func (fs *cachingFS) lookUpInode(op *fuseops.LookUpInodeOp) {
}
// LOCKS_EXCLUDED(fs.mu)
func (fs *cachingFS) getInodeAttributes(op *fuseops.GetInodeAttributesOp) {
var err error
defer func() { op.Respond(err) }()
func (fs *cachingFS) GetInodeAttributes(
op *fuseops.GetInodeAttributesOp) (err error) {
fs.mu.Lock()
defer fs.mu.Unlock()
@ -362,16 +327,12 @@ func (fs *cachingFS) getInodeAttributes(op *fuseops.GetInodeAttributesOp) {
return
}
func (fs *cachingFS) openDir(op *fuseops.OpenDirOp) {
var err error
defer func() { op.Respond(err) }()
func (fs *cachingFS) OpenDir(
op *fuseops.OpenDirOp) (err error) {
return
}
func (fs *cachingFS) openFile(op *fuseops.OpenFileOp) {
var err error
defer func() { op.Respond(err) }()
func (fs *cachingFS) OpenFile(
op *fuseops.OpenFileOp) (err error) {
return
}

3
samples/cachingfs/caching_fs_test.go
View File

@ -23,6 +23,7 @@ import (
"time"
"github.com/googlecloudplatform/gcsfuse/timeutil"
"github.com/jacobsa/fuse/fuseutil"
"github.com/jacobsa/fuse/samples"
"github.com/jacobsa/fuse/samples/cachingfs"
. "github.com/jacobsa/oglematchers"
@ -54,7 +55,7 @@ func (t *cachingFSTest) setUp(
t.fs, err = cachingfs.NewCachingFS(lookupEntryTimeout, getattrTimeout)
AssertEq(nil, err)
t.Server = t.fs
t.Server = fuseutil.NewFileSystemServer(t.fs)
// Mount it.
t.SampleTest.SetUp(ti)

109
samples/flushfs/flush_fs.go
View File

@ -16,12 +16,12 @@ package flushfs
import (
"fmt"
"io"
"os"
"sync"
"github.com/jacobsa/fuse"
"github.com/jacobsa/fuse/fuseops"
"github.com/jacobsa/fuse/fuseutil"
)
// Create a file system whose sole contents are a file named "foo" and a
@ -35,11 +35,12 @@ import (
func NewFileSystem(
reportFlush func(string) error,
reportFsync func(string) error) (server fuse.Server, err error) {
server = &flushFS{
fs := &flushFS{
reportFlush: reportFlush,
reportFsync: reportFsync,
}
server = fuseutil.NewFileSystemServer(fs)
return
}
@ -49,6 +50,8 @@ const (
)
type flushFS struct {
fuseutil.NotImplementedFileSystem
reportFlush func(string) error
reportFsync func(string) error
@ -85,67 +88,17 @@ func (fs *flushFS) barAttributes() fuseops.InodeAttributes {
}
}
// LOCKS_REQUIRED(fs.mu)
func (fs *flushFS) ServeOps(c *fuse.Connection) {
for {
op, err := c.ReadOp()
if err == io.EOF {
break
}
if err != nil {
panic(err)
}
switch typed := op.(type) {
case *fuseops.InitOp:
fs.init(typed)
case *fuseops.LookUpInodeOp:
fs.lookUpInode(typed)
case *fuseops.GetInodeAttributesOp:
fs.getInodeAttributes(typed)
case *fuseops.OpenFileOp:
fs.openFile(typed)
case *fuseops.ReadFileOp:
fs.readFile(typed)
case *fuseops.WriteFileOp:
fs.writeFile(typed)
case *fuseops.SyncFileOp:
fs.syncFile(typed)
case *fuseops.FlushFileOp:
fs.flushFile(typed)
case *fuseops.OpenDirOp:
fs.openDir(typed)
default:
typed.Respond(fuse.ENOSYS)
}
}
}
////////////////////////////////////////////////////////////////////////
// Op methods
// FileSystem methods
////////////////////////////////////////////////////////////////////////
func (fs *flushFS) init(op *fuseops.InitOp) {
var err error
defer func() { op.Respond(err) }()
func (fs *flushFS) Init(
op *fuseops.InitOp) (err error) {
return
}
func (fs *flushFS) lookUpInode(op *fuseops.LookUpInodeOp) {
var err error
defer func() { op.Respond(err) }()
func (fs *flushFS) LookUpInode(
op *fuseops.LookUpInodeOp) (err error) {
fs.mu.Lock()
defer fs.mu.Unlock()
@ -177,10 +130,8 @@ func (fs *flushFS) lookUpInode(op *fuseops.LookUpInodeOp) {
return
}
func (fs *flushFS) getInodeAttributes(op *fuseops.GetInodeAttributesOp) {
var err error
defer func() { op.Respond(err) }()
func (fs *flushFS) GetInodeAttributes(
op *fuseops.GetInodeAttributesOp) (err error) {
fs.mu.Lock()
defer fs.mu.Unlock()
@ -203,10 +154,8 @@ func (fs *flushFS) getInodeAttributes(op *fuseops.GetInodeAttributesOp) {
}
}
func (fs *flushFS) openFile(op *fuseops.OpenFileOp) {
var err error
defer func() { op.Respond(err) }()
func (fs *flushFS) OpenFile(
op *fuseops.OpenFileOp) (err error) {
fs.mu.Lock()
defer fs.mu.Unlock()
@ -219,10 +168,8 @@ func (fs *flushFS) openFile(op *fuseops.OpenFileOp) {
return
}
func (fs *flushFS) readFile(op *fuseops.ReadFileOp) {
var err error
defer func() { op.Respond(err) }()
func (fs *flushFS) ReadFile(
op *fuseops.ReadFileOp) (err error) {
fs.mu.Lock()
defer fs.mu.Unlock()
@ -238,10 +185,8 @@ func (fs *flushFS) readFile(op *fuseops.ReadFileOp) {
return
}
func (fs *flushFS) writeFile(op *fuseops.WriteFileOp) {
var err error
defer func() { op.Respond(err) }()
func (fs *flushFS) WriteFile(
op *fuseops.WriteFileOp) (err error) {
fs.mu.Lock()
defer fs.mu.Unlock()
@ -263,10 +208,8 @@ func (fs *flushFS) writeFile(op *fuseops.WriteFileOp) {
return
}
func (fs *flushFS) syncFile(op *fuseops.SyncFileOp) {
var err error
defer func() { op.Respond(err) }()
func (fs *flushFS) SyncFile(
op *fuseops.SyncFileOp) (err error) {
fs.mu.Lock()
defer fs.mu.Unlock()
@ -274,10 +217,8 @@ func (fs *flushFS) syncFile(op *fuseops.SyncFileOp) {
return
}
func (fs *flushFS) flushFile(op *fuseops.FlushFileOp) {
var err error
defer func() { op.Respond(err) }()
func (fs *flushFS) FlushFile(
op *fuseops.FlushFileOp) (err error) {
fs.mu.Lock()
defer fs.mu.Unlock()
@ -285,10 +226,8 @@ func (fs *flushFS) flushFile(op *fuseops.FlushFileOp) {
return
}
func (fs *flushFS) openDir(op *fuseops.OpenDirOp) {
var err error
defer func() { op.Respond(err) }()
func (fs *flushFS) OpenDir(
op *fuseops.OpenDirOp) (err error) {
fs.mu.Lock()
defer fs.mu.Unlock()

81
samples/hellofs/hello_fs.go
View File

@ -33,56 +33,20 @@ import (
//
// Each file contains the string "Hello, world!".
func NewHelloFS(clock timeutil.Clock) (server fuse.Server, err error) {
server = &helloFS{
fs := &helloFS{
Clock: clock,
}
server = fuseutil.NewFileSystemServer(fs)
return
}
type helloFS struct {
fuseutil.NotImplementedFileSystem
Clock timeutil.Clock
}
func (fs *helloFS) ServeOps(c *fuse.Connection) {
for {
op, err := c.ReadOp()
if err == io.EOF {
break
}
if err != nil {
panic(err)
}
switch typed := op.(type) {
case *fuseops.InitOp:
fs.init(typed)
case *fuseops.LookUpInodeOp:
fs.lookUpInode(typed)
case *fuseops.GetInodeAttributesOp:
fs.getInodeAttributes(typed)
case *fuseops.OpenDirOp:
fs.openDir(typed)
case *fuseops.ReadDirOp:
fs.readDir(typed)
case *fuseops.OpenFileOp:
fs.openFile(typed)
case *fuseops.ReadFileOp:
fs.readFile(typed)
default:
typed.Respond(fuse.ENOSYS)
}
}
}
const (
rootInode fuseops.InodeID = fuseops.RootInodeID + iota
helloInode
@ -183,14 +147,11 @@ func (fs *helloFS) patchAttributes(
attr.Crtime = now
}
func (fs *helloFS) init(op *fuseops.InitOp) {
op.Respond(nil)
func (fs *helloFS) Init(op *fuseops.InitOp) (err error) {
return
}
func (fs *helloFS) lookUpInode(op *fuseops.LookUpInodeOp) {
var err error
defer func() { op.Respond(err) }()
func (fs *helloFS) LookUpInode(op *fuseops.LookUpInodeOp) (err error) {
// Find the info for the parent.
parentInfo, ok := gInodeInfo[op.Parent]
if !ok {
@ -214,10 +175,8 @@ func (fs *helloFS) lookUpInode(op *fuseops.LookUpInodeOp) {
return
}
func (fs *helloFS) getInodeAttributes(op *fuseops.GetInodeAttributesOp) {
var err error
defer func() { op.Respond(err) }()
func (fs *helloFS) GetInodeAttributes(
op *fuseops.GetInodeAttributesOp) (err error) {
// Find the info for this inode.
info, ok := gInodeInfo[op.Inode]
if !ok {
@ -234,15 +193,14 @@ func (fs *helloFS) getInodeAttributes(op *fuseops.GetInodeAttributesOp) {
return
}
func (fs *helloFS) openDir(op *fuseops.OpenDirOp) {
func (fs *helloFS) OpenDir(
op *fuseops.OpenDirOp) (err error) {
// Allow opening any directory.
op.Respond(nil)
return
}
func (fs *helloFS) readDir(op *fuseops.ReadDirOp) {
var err error
defer func() { op.Respond(err) }()
func (fs *helloFS) ReadDir(
op *fuseops.ReadDirOp) (err error) {
// Find the info for this inode.
info, ok := gInodeInfo[op.Inode]
if !ok {
@ -277,15 +235,14 @@ func (fs *helloFS) readDir(op *fuseops.ReadDirOp) {
return
}
func (fs *helloFS) openFile(op *fuseops.OpenFileOp) {
func (fs *helloFS) OpenFile(
op *fuseops.OpenFileOp) (err error) {
// Allow opening any file.
op.Respond(nil)
return
}
func (fs *helloFS) readFile(op *fuseops.ReadFileOp) {
var err error
defer func() { op.Respond(err) }()
func (fs *helloFS) ReadFile(
op *fuseops.ReadFileOp) (err error) {
// Let io.ReaderAt deal with the semantics.
reader := strings.NewReader("Hello, world!")

141
samples/memfs/fs.go
View File

@ -28,6 +28,8 @@ import (
)
type memFS struct {
fuseutil.NotImplementedFileSystem
/////////////////////////
// Dependencies
/////////////////////////
@ -86,70 +88,13 @@ func NewMemFS(
// Set up invariant checking.
fs.mu = syncutil.NewInvariantMutex(fs.checkInvariants)
return fs
return fuseutil.NewFileSystemServer(fs)
}
////////////////////////////////////////////////////////////////////////
// Helpers
////////////////////////////////////////////////////////////////////////
func (fs *memFS) ServeOps(c *fuse.Connection) {
for {
op, err := c.ReadOp()
if err == io.EOF {
break
}
if err != nil {
panic(err)
}
switch typed := op.(type) {
case *fuseops.InitOp:
fs.init(typed)
case *fuseops.LookUpInodeOp:
fs.lookUpInode(typed)
case *fuseops.GetInodeAttributesOp:
fs.getInodeAttributes(typed)
case *fuseops.SetInodeAttributesOp:
fs.setInodeAttributes(typed)
case *fuseops.MkDirOp:
fs.mkDir(typed)
case *fuseops.CreateFileOp:
fs.createFile(typed)
case *fuseops.RmDirOp:
fs.rmDir(typed)
case *fuseops.UnlinkOp:
fs.unlink(typed)
case *fuseops.OpenDirOp:
fs.openDir(typed)
case *fuseops.ReadDirOp:
fs.readDir(typed)
case *fuseops.OpenFileOp:
fs.openFile(typed)
case *fuseops.ReadFileOp:
fs.readFile(typed)
case *fuseops.WriteFileOp:
fs.writeFile(typed)
default:
typed.Respond(fuse.ENOSYS)
}
}
}
func (fs *memFS) checkInvariants() {
// Check reserved inodes.
for i := 0; i < fuseops.RootInodeID; i++ {
@ -251,20 +196,16 @@ func (fs *memFS) deallocateInode(id fuseops.InodeID) {
}
////////////////////////////////////////////////////////////////////////
// Op methods
// FileSystem methods
////////////////////////////////////////////////////////////////////////
func (fs *memFS) init(op *fuseops.InitOp) {
var err error
defer func() { op.Respond(err) }()
func (fs *memFS) Init(
op *fuseops.InitOp) (err error) {
return
}
func (fs *memFS) lookUpInode(op *fuseops.LookUpInodeOp) {
var err error
defer func() { op.Respond(err) }()
func (fs *memFS) LookUpInode(
op *fuseops.LookUpInodeOp) (err error) {
fs.mu.RLock()
defer fs.mu.RUnlock()
@ -295,10 +236,8 @@ func (fs *memFS) lookUpInode(op *fuseops.LookUpInodeOp) {
return
}
func (fs *memFS) getInodeAttributes(op *fuseops.GetInodeAttributesOp) {
var err error
defer func() { op.Respond(err) }()
func (fs *memFS) GetInodeAttributes(
op *fuseops.GetInodeAttributesOp) (err error) {
fs.mu.RLock()
defer fs.mu.RUnlock()
@ -316,10 +255,8 @@ func (fs *memFS) getInodeAttributes(op *fuseops.GetInodeAttributesOp) {
return
}
func (fs *memFS) setInodeAttributes(op *fuseops.SetInodeAttributesOp) {
var err error
defer func() { op.Respond(err) }()
func (fs *memFS) SetInodeAttributes(
op *fuseops.SetInodeAttributesOp) (err error) {
fs.mu.RLock()
defer fs.mu.RUnlock()
@ -340,10 +277,8 @@ func (fs *memFS) setInodeAttributes(op *fuseops.SetInodeAttributesOp) {
return
}
func (fs *memFS) mkDir(op *fuseops.MkDirOp) {
var err error
defer func() { op.Respond(err) }()
func (fs *memFS) MkDir(
op *fuseops.MkDirOp) (err error) {
fs.mu.Lock()
defer fs.mu.Unlock()
@ -379,10 +314,8 @@ func (fs *memFS) mkDir(op *fuseops.MkDirOp) {
return
}
func (fs *memFS) createFile(op *fuseops.CreateFileOp) {
var err error
defer func() { op.Respond(err) }()
func (fs *memFS) CreateFile(
op *fuseops.CreateFileOp) (err error) {
fs.mu.Lock()
defer fs.mu.Unlock()
@ -425,10 +358,8 @@ func (fs *memFS) createFile(op *fuseops.CreateFileOp) {
return
}
func (fs *memFS) rmDir(op *fuseops.RmDirOp) {
var err error
defer func() { op.Respond(err) }()
func (fs *memFS) RmDir(
op *fuseops.RmDirOp) (err error) {
fs.mu.Lock()
defer fs.mu.Unlock()
@ -462,10 +393,8 @@ func (fs *memFS) rmDir(op *fuseops.RmDirOp) {
return
}
func (fs *memFS) unlink(op *fuseops.UnlinkOp) {
var err error
defer func() { op.Respond(err) }()
func (fs *memFS) Unlink(
op *fuseops.UnlinkOp) (err error) {
fs.mu.Lock()
defer fs.mu.Unlock()
@ -493,10 +422,8 @@ func (fs *memFS) unlink(op *fuseops.UnlinkOp) {
return
}
func (fs *memFS) openDir(op *fuseops.OpenDirOp) {
var err error
defer func() { op.Respond(err) }()
func (fs *memFS) OpenDir(
op *fuseops.OpenDirOp) (err error) {
fs.mu.RLock()
defer fs.mu.RUnlock()
@ -513,10 +440,8 @@ func (fs *memFS) openDir(op *fuseops.OpenDirOp) {
return
}
func (fs *memFS) readDir(op *fuseops.ReadDirOp) {
var err error
defer func() { op.Respond(err) }()
func (fs *memFS) ReadDir(
op *fuseops.ReadDirOp) (err error) {
fs.mu.RLock()
defer fs.mu.RUnlock()
@ -534,10 +459,8 @@ func (fs *memFS) readDir(op *fuseops.ReadDirOp) {
return
}
func (fs *memFS) openFile(op *fuseops.OpenFileOp) {
var err error
defer func() { op.Respond(err) }()
func (fs *memFS) OpenFile(
op *fuseops.OpenFileOp) (err error) {
fs.mu.RLock()
defer fs.mu.RUnlock()
@ -554,10 +477,8 @@ func (fs *memFS) openFile(op *fuseops.OpenFileOp) {
return
}
func (fs *memFS) readFile(op *fuseops.ReadFileOp) {
var err error
defer func() { op.Respond(err) }()
func (fs *memFS) ReadFile(
op *fuseops.ReadFileOp) (err error) {
fs.mu.RLock()
defer fs.mu.RUnlock()
@ -578,10 +499,8 @@ func (fs *memFS) readFile(op *fuseops.ReadFileOp) {
return
}
func (fs *memFS) writeFile(op *fuseops.WriteFileOp) {
var err error
defer func() { op.Respond(err) }()
func (fs *memFS) WriteFile(
op *fuseops.WriteFileOp) (err error) {
fs.mu.RLock()
defer fs.mu.RUnlock()