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Elara
2023-03-25 15:24:46 -07:00
parent 77680704e1
commit 510f183db2
5 changed files with 103 additions and 72 deletions
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11
fuse.go
View File

@@ -1,17 +1,19 @@
package main
import (
"go.arsenm.dev/itd/internal/fusefs"
"context"
"os"
"github.com/hanwen/go-fuse/v2/fs"
"github.com/hanwen/go-fuse/v2/fuse"
"go.arsenm.dev/logger/log"
"context"
"go.arsenm.dev/infinitime"
"go.arsenm.dev/itd/internal/fusefs"
"go.arsenm.dev/logger/log"
)
func startFUSE(ctx context.Context, dev *infinitime.Device) error {
// This is where we'll mount the FS
err := os.MkdirAll(k.String("fuse.mountpoint"), 0755)
err := os.MkdirAll(k.String("fuse.mountpoint"), 0o755)
if err != nil && !os.IsExist(err) {
return err
}
@@ -19,7 +21,6 @@ func startFUSE(ctx context.Context, dev *infinitime.Device) error {
// Ignore the error because nothing might be mounted on the mountpoint
_ = fusefs.Unmount(k.String("fuse.mountpoint"))
root, err := fusefs.BuildRootNode(dev)
if err != nil {
log.Error("Building root node failed").

79
internal/fusefs/fuse.go
View File

@@ -1,16 +1,17 @@
package fusefs
import (
"bytes"
"context"
"io"
"strconv"
"syscall"
"github.com/hanwen/go-fuse/v2/fs"
"github.com/hanwen/go-fuse/v2/fuse"
"go.arsenm.dev/infinitime"
"go.arsenm.dev/infinitime/blefs"
"go.arsenm.dev/logger/log"
"context"
"syscall"
"github.com/hanwen/go-fuse/v2/fs"
"github.com/hanwen/go-fuse/v2/fuse"
"io"
"bytes"
"strconv"
)
type ITProperty struct {
@@ -19,7 +20,6 @@ type ITProperty struct {
gen func() ([]byte, error)
}
type DirEntry struct {
isDir bool
modtime uint64
@@ -37,8 +37,10 @@ type ITNode struct {
path string
}
var myfs *blefs.FS = nil
var inodemap map[string]uint64 = nil
var (
myfs *blefs.FS = nil
inodemap map[string]uint64 = nil
)
func BuildRootNode(dev *infinitime.Device) (*ITNode, error) {
var err error
@@ -55,39 +57,49 @@ func BuildRootNode(dev *infinitime.Device) (*ITNode, error) {
var properties = make([]ITProperty, 6)
func BuildProperties(dev *infinitime.Device) {
properties[0] = ITProperty{"heartrate", 2,
properties[0] = ITProperty{
"heartrate", 2,
func() ([]byte, error) {
ans, err := dev.HeartRate()
return []byte(strconv.Itoa(int(ans)) + "\n"), err
}}
properties[1] = ITProperty{"battery", 3,
},
}
properties[1] = ITProperty{
"battery", 3,
func() ([]byte, error) {
ans, err := dev.BatteryLevel()
return []byte(strconv.Itoa(int(ans)) + "\n"), err
}}
properties[2] = ITProperty{"motion", 4,
},
}
properties[2] = ITProperty{
"motion", 4,
func() ([]byte, error) {
ans, err := dev.Motion()
return []byte(strconv.Itoa(int(ans.X)) + " " + strconv.Itoa(int(ans.Y)) + " " + strconv.Itoa(int(ans.Z)) + "\n"), err
}}
properties[3] = ITProperty{"stepcount", 6,
},
}
properties[3] = ITProperty{
"stepcount", 6,
func() ([]byte, error) {
ans, err := dev.StepCount()
return []byte(strconv.Itoa(int(ans)) + "\n"), err
}}
properties[4] = ITProperty{"version", 7,
},
}
properties[4] = ITProperty{
"version", 7,
func() ([]byte, error) {
ans, err := dev.Version()
return []byte(ans + "\n"), err
}}
properties[5] = ITProperty{"address", 8,
},
}
properties[5] = ITProperty{
"address", 8,
func() ([]byte, error) {
ans := dev.Address()
return []byte(ans + "\n"), nil
}}
},
}
}
var _ fs.NodeReaddirer = (*ITNode)(nil)
@@ -176,6 +188,7 @@ func (n *ITNode) Readdir(ctx context.Context) (fs.DirStream, syscall.Errno) {
}
var _ fs.NodeLookuper = (*ITNode)(nil)
func (n *ITNode) Lookup(ctx context.Context, name string, out *fuse.EntryOut) (*fs.Inode, syscall.Errno) {
switch n.kind {
case 0:
@@ -255,6 +268,7 @@ type bytesFileReadHandle struct {
}
var _ fs.FileReader = (*bytesFileReadHandle)(nil)
func (fh *bytesFileReadHandle) Read(ctx context.Context, dest []byte, off int64) (fuse.ReadResult, syscall.Errno) {
log.Debug("FUSE Executing Read").Int("size", len(fh.content)).Send()
end := off + int64(len(dest))
@@ -267,7 +281,9 @@ func (fh *bytesFileReadHandle) Read(ctx context.Context, dest []byte, off int64)
type sensorFileReadHandle struct {
content []byte
}
var _ fs.FileReader = (*sensorFileReadHandle)(nil)
func (fh *sensorFileReadHandle) Read(ctx context.Context, dest []byte, off int64) (fuse.ReadResult, syscall.Errno) {
log.Info("Executing Read").Int("size", len(fh.content)).Send()
end := off + int64(len(dest))
@@ -278,17 +294,18 @@ func (fh *sensorFileReadHandle) Read(ctx context.Context, dest []byte, off int64
}
var _ fs.FileFlusher = (*sensorFileReadHandle)(nil)
func (fh *sensorFileReadHandle) Flush(ctx context.Context) (errno syscall.Errno) {
return 0
}
type bytesFileWriteHandle struct {
content []byte
path string
}
var _ fs.FileWriter = (*bytesFileWriteHandle)(nil)
func (fh *bytesFileWriteHandle) Write(ctx context.Context, data []byte, off int64) (written uint32, errno syscall.Errno) {
log.Info("Executing Write").Str("path", fh.path).Int("prev_size", len(fh.content)).Int("next_size", len(data)).Send()
if off != int64(len(fh.content)) {
@@ -300,8 +317,8 @@ func (fh *bytesFileWriteHandle) Write(ctx context.Context, data []byte, off int6
}
var _ fs.FileFlusher = (*bytesFileWriteHandle)(nil)
func (fh *bytesFileWriteHandle) Flush(ctx context.Context) (errno syscall.Errno) {
func (fh *bytesFileWriteHandle) Flush(ctx context.Context) (errno syscall.Errno) {
log.Debug("FUSE Attempting flush").Str("path", fh.path).Send()
fp, err := myfs.Create(fh.path, uint32(len(fh.content)))
if err != nil {
@@ -347,12 +364,15 @@ func (fh *bytesFileWriteHandle) Flush(ctx context.Context) (errno syscall.Errno)
return 0
}
var _ fs.FileFsyncer = (*bytesFileWriteHandle)(nil)
func (fh *bytesFileWriteHandle) Fsync(ctx context.Context, flags uint32) (errno syscall.Errno) {
return fh.Flush(ctx)
}
var _ fs.NodeGetattrer = (*ITNode)(nil)
func (bn *ITNode) Getattr(ctx context.Context, f fs.FileHandle, out *fuse.AttrOut) syscall.Errno {
log.Debug("FUSE getattr").Str("path", bn.path).Send()
out.Ino = bn.Ino
@@ -364,6 +384,7 @@ func (bn *ITNode) Getattr(ctx context.Context, f fs.FileHandle, out *fuse.AttrOu
}
var _ fs.NodeSetattrer = (*ITNode)(nil)
func (bn *ITNode) Setattr(ctx context.Context, fh fs.FileHandle, in *fuse.SetAttrIn, out *fuse.AttrOut) syscall.Errno {
log.Debug("FUSE setattr").Str("path", bn.path).Send()
out.Size = 0
@@ -372,6 +393,7 @@ func (bn *ITNode) Setattr(ctx context.Context, fh fs.FileHandle, in *fuse.SetAtt
}
var _ fs.NodeOpener = (*ITNode)(nil)
func (f *ITNode) Open(ctx context.Context, openFlags uint32) (fh fs.FileHandle, fuseFlags uint32, errno syscall.Errno) {
switch f.kind {
case 2:
@@ -446,6 +468,7 @@ func (f *ITNode) Open(ctx context.Context, openFlags uint32) (fh fs.FileHandle,
}
var _ fs.NodeCreater = (*ITNode)(nil)
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) {
if f.kind != 2 {
return nil, nil, 0, syscall.EROFS
@@ -477,6 +500,7 @@ func (f *ITNode) Create(ctx context.Context, name string, flags uint32, mode uin
}
var _ fs.NodeMkdirer = (*ITNode)(nil)
func (f *ITNode) Mkdir(ctx context.Context, name string, mode uint32, out *fuse.EntryOut) (*fs.Inode, syscall.Errno) {
if f.kind != 2 {
return nil, syscall.EROFS
@@ -513,6 +537,7 @@ func (f *ITNode) Mkdir(ctx context.Context, name string, mode uint32, out *fuse.
}
var _ fs.NodeRenamer = (*ITNode)(nil)
func (f *ITNode) Rename(ctx context.Context, name string, newParent fs.InodeEmbedder, newName string, flags uint32) syscall.Errno {
if f.kind != 2 {
return syscall.EROFS
@@ -544,6 +569,7 @@ func (f *ITNode) Rename(ctx context.Context, name string, newParent fs.InodeEmbe
}
var _ fs.NodeUnlinker = (*ITNode)(nil)
func (f *ITNode) Unlink(ctx context.Context, name string) syscall.Errno {
if f.kind != 2 {
return syscall.EROFS
@@ -567,6 +593,7 @@ func (f *ITNode) Unlink(ctx context.Context, name string) syscall.Errno {
}
var _ fs.NodeRmdirer = (*ITNode)(nil)
func (f *ITNode) Rmdir(ctx context.Context, name string) syscall.Errno {
return f.Unlink(ctx, name)
}

5
internal/fusefs/syscallerr.go
View File

@@ -1,7 +1,9 @@
package fusefs
import (
"go.arsenm.dev/infinitime/blefs"
"syscall"
"go.arsenm.dev/infinitime/blefs"
)
func syscallErr(err error) syscall.Errno {
@@ -63,5 +65,4 @@ func syscallErr(err error) syscall.Errno {
}
return syscall.EIO // TODO
}

2
internal/fusefs/unmount.go
View File

@@ -2,6 +2,7 @@ package fusefs
import (
_ "unsafe"
"github.com/hanwen/go-fuse/v2/fuse"
)
@@ -11,5 +12,6 @@ func Unmount(mountPoint string) error {
// Unfortunately, the FUSE library does not export its unmount function,
// so this is required until that changes
//
//go:linkname unmount github.com/hanwen/go-fuse/v2/fuse.unmount
func unmount(mountPoint string, opts *fuse.MountOptions) error