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77680704e1
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510f183db2
11
fuse.go
11
fuse.go
@ -1,17 +1,19 @@
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package main
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import (
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"go.arsenm.dev/itd/internal/fusefs"
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"context"
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"os"
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"github.com/hanwen/go-fuse/v2/fs"
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"github.com/hanwen/go-fuse/v2/fuse"
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"go.arsenm.dev/logger/log"
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"context"
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"go.arsenm.dev/infinitime"
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"go.arsenm.dev/itd/internal/fusefs"
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"go.arsenm.dev/logger/log"
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)
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func startFUSE(ctx context.Context, dev *infinitime.Device) error {
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// This is where we'll mount the FS
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err := os.MkdirAll(k.String("fuse.mountpoint"), 0755)
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err := os.MkdirAll(k.String("fuse.mountpoint"), 0o755)
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if err != nil && !os.IsExist(err) {
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return err
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}
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@ -19,7 +21,6 @@ func startFUSE(ctx context.Context, dev *infinitime.Device) error {
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// Ignore the error because nothing might be mounted on the mountpoint
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_ = fusefs.Unmount(k.String("fuse.mountpoint"))
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root, err := fusefs.BuildRootNode(dev)
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if err != nil {
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log.Error("Building root node failed").
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@ -1,16 +1,17 @@
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package fusefs
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import (
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"bytes"
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"context"
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"io"
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"strconv"
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"syscall"
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"github.com/hanwen/go-fuse/v2/fs"
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"github.com/hanwen/go-fuse/v2/fuse"
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"go.arsenm.dev/infinitime"
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"go.arsenm.dev/infinitime/blefs"
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"go.arsenm.dev/logger/log"
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"context"
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"syscall"
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"github.com/hanwen/go-fuse/v2/fs"
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"github.com/hanwen/go-fuse/v2/fuse"
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"io"
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"bytes"
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"strconv"
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)
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type ITProperty struct {
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@ -19,7 +20,6 @@ type ITProperty struct {
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gen func() ([]byte, error)
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}
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type DirEntry struct {
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isDir bool
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modtime uint64
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@ -37,8 +37,10 @@ type ITNode struct {
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path string
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}
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var myfs *blefs.FS = nil
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var inodemap map[string]uint64 = nil
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var (
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myfs *blefs.FS = nil
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inodemap map[string]uint64 = nil
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)
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func BuildRootNode(dev *infinitime.Device) (*ITNode, error) {
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var err error
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@ -55,40 +57,50 @@ func BuildRootNode(dev *infinitime.Device) (*ITNode, error) {
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var properties = make([]ITProperty, 6)
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func BuildProperties(dev *infinitime.Device) {
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properties[0] = ITProperty{"heartrate", 2,
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properties[0] = ITProperty{
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"heartrate", 2,
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func() ([]byte, error) {
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ans, err := dev.HeartRate()
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return []byte(strconv.Itoa(int(ans)) + "\n"), err
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}}
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properties[1] = ITProperty{"battery", 3,
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},
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}
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properties[1] = ITProperty{
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"battery", 3,
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func() ([]byte, error) {
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ans, err := dev.BatteryLevel()
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return []byte(strconv.Itoa(int(ans)) + "\n"), err
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}}
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properties[2] = ITProperty{"motion", 4,
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},
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}
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properties[2] = ITProperty{
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"motion", 4,
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func() ([]byte, error) {
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ans, err := dev.Motion()
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return []byte(strconv.Itoa(int(ans.X)) + " " + strconv.Itoa(int(ans.Y)) + " " + strconv.Itoa(int(ans.Z)) + "\n"), err
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}}
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properties[3] = ITProperty{"stepcount", 6,
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},
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}
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properties[3] = ITProperty{
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"stepcount", 6,
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func() ([]byte, error) {
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ans, err := dev.StepCount()
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return []byte(strconv.Itoa(int(ans)) + "\n"), err
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}}
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properties[4] = ITProperty{"version", 7,
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},
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}
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properties[4] = ITProperty{
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"version", 7,
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func() ([]byte, error) {
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ans, err := dev.Version()
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return []byte(ans + "\n"), err
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}}
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properties[5] = ITProperty{"address", 8,
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},
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}
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properties[5] = ITProperty{
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"address", 8,
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func() ([]byte, error) {
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ans := dev.Address()
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return []byte(ans + "\n"), nil
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}}
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},
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}
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}
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var _ fs.NodeReaddirer = (*ITNode)(nil)
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// Readdir is part of the NodeReaddirer interface
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@ -159,13 +171,13 @@ func (n *ITNode) Readdir(ctx context.Context) (fs.DirStream, syscall.Errno) {
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r[ind] = fuse.DirEntry{
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Name: name,
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Mode: fuse.S_IFDIR,
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Ino : ino + 10,
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Ino: ino + 10,
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}
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} else {
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r[ind] = fuse.DirEntry{
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Name: name,
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Mode: fuse.S_IFREG,
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Ino : ino + 10,
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Ino: ino + 10,
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}
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}
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}
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@ -176,6 +188,7 @@ func (n *ITNode) Readdir(ctx context.Context) (fs.DirStream, syscall.Errno) {
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}
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var _ fs.NodeLookuper = (*ITNode)(nil)
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func (n *ITNode) Lookup(ctx context.Context, name string, out *fuse.EntryOut) (*fs.Inode, syscall.Errno) {
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switch n.kind {
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case 0:
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@ -193,7 +206,7 @@ func (n *ITNode) Lookup(ctx context.Context, name string, out *fuse.EntryOut) (*
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Mode: fuse.S_IFDIR,
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Ino: uint64(1),
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}
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operations := &ITNode{kind: 2, Ino: 1, path : ""}
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operations := &ITNode{kind: 2, Ino: 1, path: ""}
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child := n.NewInode(ctx, operations, stable)
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return child, 0
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}
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@ -218,7 +231,7 @@ func (n *ITNode) Lookup(ctx context.Context, name string, out *fuse.EntryOut) (*
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}
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for _, file := range n.lst {
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if file.path != n.path + "/" + name {
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if file.path != n.path+"/"+name {
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continue
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}
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log.Debug("FUSE Lookup successful").Str("path", file.path).Send()
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@ -245,7 +258,7 @@ func (n *ITNode) Lookup(ctx context.Context, name string, out *fuse.EntryOut) (*
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}
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break
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}
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log.Warn("FUSE Lookup failed").Str("path", n.path + "/" + name).Send()
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log.Warn("FUSE Lookup failed").Str("path", n.path+"/"+name).Send()
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}
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return nil, syscall.ENOENT
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}
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@ -255,6 +268,7 @@ type bytesFileReadHandle struct {
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}
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var _ fs.FileReader = (*bytesFileReadHandle)(nil)
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func (fh *bytesFileReadHandle) Read(ctx context.Context, dest []byte, off int64) (fuse.ReadResult, syscall.Errno) {
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log.Debug("FUSE Executing Read").Int("size", len(fh.content)).Send()
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end := off + int64(len(dest))
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@ -267,7 +281,9 @@ func (fh *bytesFileReadHandle) Read(ctx context.Context, dest []byte, off int64)
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type sensorFileReadHandle struct {
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content []byte
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}
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var _ fs.FileReader = (*sensorFileReadHandle)(nil)
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func (fh *sensorFileReadHandle) Read(ctx context.Context, dest []byte, off int64) (fuse.ReadResult, syscall.Errno) {
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log.Info("Executing Read").Int("size", len(fh.content)).Send()
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end := off + int64(len(dest))
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@ -278,17 +294,18 @@ func (fh *sensorFileReadHandle) Read(ctx context.Context, dest []byte, off int64
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}
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var _ fs.FileFlusher = (*sensorFileReadHandle)(nil)
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func (fh *sensorFileReadHandle) Flush(ctx context.Context) (errno syscall.Errno) {
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return 0
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}
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type bytesFileWriteHandle struct {
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content []byte
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path string
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}
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var _ fs.FileWriter = (*bytesFileWriteHandle)(nil)
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func (fh *bytesFileWriteHandle) Write(ctx context.Context, data []byte, off int64) (written uint32, errno syscall.Errno) {
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log.Info("Executing Write").Str("path", fh.path).Int("prev_size", len(fh.content)).Int("next_size", len(data)).Send()
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if off != int64(len(fh.content)) {
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@ -300,8 +317,8 @@ func (fh *bytesFileWriteHandle) Write(ctx context.Context, data []byte, off int6
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}
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var _ fs.FileFlusher = (*bytesFileWriteHandle)(nil)
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func (fh *bytesFileWriteHandle) Flush(ctx context.Context) (errno syscall.Errno) {
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func (fh *bytesFileWriteHandle) Flush(ctx context.Context) (errno syscall.Errno) {
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log.Debug("FUSE Attempting flush").Str("path", fh.path).Send()
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fp, err := myfs.Create(fh.path, uint32(len(fh.content)))
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if err != nil {
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@ -347,12 +364,15 @@ func (fh *bytesFileWriteHandle) Flush(ctx context.Context) (errno syscall.Errno)
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return 0
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}
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var _ fs.FileFsyncer = (*bytesFileWriteHandle)(nil)
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func (fh *bytesFileWriteHandle) Fsync(ctx context.Context, flags uint32) (errno syscall.Errno) {
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return fh.Flush(ctx)
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}
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var _ fs.NodeGetattrer = (*ITNode)(nil)
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func (bn *ITNode) Getattr(ctx context.Context, f fs.FileHandle, out *fuse.AttrOut) syscall.Errno {
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log.Debug("FUSE getattr").Str("path", bn.path).Send()
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out.Ino = bn.Ino
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@ -364,6 +384,7 @@ func (bn *ITNode) Getattr(ctx context.Context, f fs.FileHandle, out *fuse.AttrOu
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}
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var _ fs.NodeSetattrer = (*ITNode)(nil)
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func (bn *ITNode) Setattr(ctx context.Context, fh fs.FileHandle, in *fuse.SetAttrIn, out *fuse.AttrOut) syscall.Errno {
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log.Debug("FUSE setattr").Str("path", bn.path).Send()
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out.Size = 0
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@ -372,6 +393,7 @@ func (bn *ITNode) Setattr(ctx context.Context, fh fs.FileHandle, in *fuse.SetAtt
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}
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var _ fs.NodeOpener = (*ITNode)(nil)
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func (f *ITNode) Open(ctx context.Context, openFlags uint32) (fh fs.FileHandle, fuseFlags uint32, errno syscall.Errno) {
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switch f.kind {
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case 2:
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@ -381,11 +403,11 @@ func (f *ITNode) Open(ctx context.Context, openFlags uint32) (fh fs.FileHandle,
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return nil, 0, syscall.EROFS
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}
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if openFlags & syscall.O_WRONLY != 0 {
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if openFlags&syscall.O_WRONLY != 0 {
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log.Debug("FUSE Opening for write").Str("path", f.path).Send()
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fh = &bytesFileWriteHandle{
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path : f.path,
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content : make([]byte, 0),
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path: f.path,
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content: make([]byte, 0),
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}
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return fh, fuse.FOPEN_DIRECT_IO, 0
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} else {
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@ -436,7 +458,7 @@ func (f *ITNode) Open(ctx context.Context, openFlags uint32) (fh fs.FileHandle,
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}
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fh = &sensorFileReadHandle{
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content : ans,
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content: ans,
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}
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return fh, fuse.FOPEN_DIRECT_IO, 0
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}
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@ -446,6 +468,7 @@ func (f *ITNode) Open(ctx context.Context, openFlags uint32) (fh fs.FileHandle,
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}
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var _ fs.NodeCreater = (*ITNode)(nil)
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func (f *ITNode) Create(ctx context.Context, name string, flags uint32, mode uint32, out *fuse.EntryOut) (node *fs.Inode, fh fs.FileHandle, fuseFlags uint32, errno syscall.Errno) {
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if f.kind != 2 {
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return nil, nil, 0, syscall.EROFS
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@ -461,13 +484,13 @@ func (f *ITNode) Create(ctx context.Context, name string, flags uint32, mode uin
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}
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operations := &ITNode{
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kind: 2, Ino: ino,
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path : path,
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path: path,
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}
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node = f.NewInode(ctx, operations, stable)
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fh = &bytesFileWriteHandle{
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path : path,
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content : make([]byte, 0),
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path: path,
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content: make([]byte, 0),
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}
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log.Debug("FUSE Creating file").Str("path", path).Send()
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@ -477,6 +500,7 @@ func (f *ITNode) Create(ctx context.Context, name string, flags uint32, mode uin
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}
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var _ fs.NodeMkdirer = (*ITNode)(nil)
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func (f *ITNode) Mkdir(ctx context.Context, name string, mode uint32, out *fuse.EntryOut) (*fs.Inode, syscall.Errno) {
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if f.kind != 2 {
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return nil, syscall.EROFS
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@ -501,7 +525,7 @@ func (f *ITNode) Mkdir(ctx context.Context, name string, mode uint32, out *fuse.
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}
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operations := &ITNode{
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kind: 2, Ino: ino,
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path : path,
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path: path,
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}
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node := f.NewInode(ctx, operations, stable)
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@ -513,6 +537,7 @@ func (f *ITNode) Mkdir(ctx context.Context, name string, mode uint32, out *fuse.
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}
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var _ fs.NodeRenamer = (*ITNode)(nil)
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func (f *ITNode) Rename(ctx context.Context, name string, newParent fs.InodeEmbedder, newName string, flags uint32) syscall.Errno {
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if f.kind != 2 {
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return syscall.EROFS
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@ -544,16 +569,17 @@ func (f *ITNode) Rename(ctx context.Context, name string, newParent fs.InodeEmbe
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}
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var _ fs.NodeUnlinker = (*ITNode)(nil)
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func (f *ITNode) Unlink(ctx context.Context, name string) syscall.Errno {
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if f.kind != 2 {
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return syscall.EROFS
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}
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delete(inodemap, f.path + "/" + name)
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delete(inodemap, f.path+"/"+name)
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err := myfs.Remove(f.path + "/" + name)
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if err != nil {
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log.Error("FUSE Unlink failed").
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Str("file", f.path + "/" + name).
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Str("file", f.path+"/"+name).
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Err(err).
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Send()
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@ -561,12 +587,13 @@ func (f *ITNode) Unlink(ctx context.Context, name string) syscall.Errno {
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}
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log.Debug("FUSE Unlink success").
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Str("file", f.path + "/" + name).
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Str("file", f.path+"/"+name).
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Send()
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return 0
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}
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var _ fs.NodeRmdirer = (*ITNode)(nil)
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func (f *ITNode) Rmdir(ctx context.Context, name string) syscall.Errno {
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return f.Unlink(ctx, name)
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}
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@ -1,7 +1,9 @@
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package fusefs
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import (
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"go.arsenm.dev/infinitime/blefs"
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"syscall"
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"go.arsenm.dev/infinitime/blefs"
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)
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func syscallErr(err error) syscall.Errno {
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@ -63,5 +65,4 @@ func syscallErr(err error) syscall.Errno {
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}
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return syscall.EIO // TODO
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}
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@ -2,6 +2,7 @@ package fusefs
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import (
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_ "unsafe"
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"github.com/hanwen/go-fuse/v2/fuse"
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)
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@ -11,5 +12,6 @@ func Unmount(mountPoint string) error {
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// Unfortunately, the FUSE library does not export its unmount function,
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// so this is required until that changes
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//
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//go:linkname unmount github.com/hanwen/go-fuse/v2/fuse.unmount
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func unmount(mountPoint string, opts *fuse.MountOptions) error
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