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Send better syscall status codes

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This commit is contained in:
Yannick Ulrich 2023-03-01 19:35:58 +00:00
parent 3b9690103b
commit 955e1323ce
1 changed files with 24 additions and 9 deletions
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33
internal/fusefs/fuse.go
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@ -126,6 +126,7 @@ func (n *ITNode) Readdir(ctx context.Context) (fs.DirStream, syscall.Errno) {
files, err := myfs.ReadDir(n.path) files, err := myfs.ReadDir(n.path)
if err != nil { if err != nil {
log.Error("FUSE ReadDir failed").Str("path", n.path).Err(err).Send() log.Error("FUSE ReadDir failed").Str("path", n.path).Err(err).Send()
// TODO we probably should figure out why it failed
return nil, syscall.ENOENT return nil, syscall.ENOENT
} }
@ -209,7 +210,6 @@ func (n *ITNode) Lookup(ctx context.Context, name string, out *fuse.EntryOut) (*
return child, 0 return child, 0
} }
} }
return nil, syscall.ENOENT
case 2: case 2:
// FS object // FS object
@ -290,6 +290,8 @@ var _ fs.FileWriter = (*bytesFileWriteHandle)(nil)
func (fh *bytesFileWriteHandle) Write(ctx context.Context, data []byte, off int64) (written uint32, errno syscall.Errno) { 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() 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)) { if off != int64(len(fh.content)) {
log.Error("FUSE Write file size changed unexpectedly").Int("expect", int(off)).Int("received", len(fh.content)).Send()
return 0, syscall.ENXIO
} }
fh.content = append(fh.content[:], data[:]...) fh.content = append(fh.content[:], data[:]...)
return uint32(len(data)), 0 return uint32(len(data)), 0
@ -320,17 +322,17 @@ func (fh *bytesFileWriteHandle) Flush(ctx context.Context) (errno syscall.Errno)
if err != nil { if err != nil {
log.Error("FUSE Flush failed during write").Str("path", fh.path).Err(err).Send() log.Error("FUSE Flush failed during write").Str("path", fh.path).Err(err).Send()
fp.Close() fp.Close()
return syscall.EROFS return syscall.EIO
} }
if int(nread) != len(fh.content) { if int(nread) != len(fh.content) {
log.Error("FUSE Flush failed during write").Str("path", fh.path).Int("expect", len(fh.content)).Int("got", int(nread)).Send() log.Error("FUSE Flush failed during write").Str("path", fh.path).Int("expect", len(fh.content)).Int("got", int(nread)).Send()
fp.Close() fp.Close()
return syscall.EROFS return syscall.EIO
} }
err = fp.Close() err = fp.Close()
if err != nil { if err != nil {
log.Error("FUSE Flush failed during close").Str("path", fh.path).Err(err).Send() log.Error("FUSE Flush failed during close").Str("path", fh.path).Err(err).Send()
return syscall.EROFS return syscall.EIO
} }
log.Debug("FUSE Flush done").Str("path", fh.path).Int("size", len(fh.content)).Send() log.Debug("FUSE Flush done").Str("path", fh.path).Int("size", len(fh.content)).Send()
@ -381,6 +383,7 @@ func (f *ITNode) Open(ctx context.Context, openFlags uint32) (fh fs.FileHandle,
log.Debug("FUSE Opening for read").Str("path", f.path).Send() log.Debug("FUSE Opening for read").Str("path", f.path).Send()
fp, err := myfs.Open(f.path) fp, err := myfs.Open(f.path)
if err != nil { if err != nil {
// TODO we probably should figure out why it failed
log.Error("FUSE: Opening failed").Str("path", f.path).Err(err).Send() log.Error("FUSE: Opening failed").Str("path", f.path).Err(err).Send()
return nil, 0, syscall.EROFS return nil, 0, syscall.EROFS
} }
@ -400,7 +403,7 @@ func (f *ITNode) Open(ctx context.Context, openFlags uint32) (fh fs.FileHandle,
if err != nil { if err != nil {
log.Error("FUSE Read failed").Str("path", f.path).Err(err).Send() log.Error("FUSE Read failed").Str("path", f.path).Err(err).Send()
fp.Close() fp.Close()
return nil, 0, syscall.EROFS return nil, 0, syscall.EIO
} }
fh = &bytesFileReadHandle{ fh = &bytesFileReadHandle{
@ -422,7 +425,8 @@ func (f *ITNode) Open(ctx context.Context, openFlags uint32) (fh fs.FileHandle,
sub_ctx, cancel := context.WithCancel(ctx) sub_ctx, cancel := context.WithCancel(ctx)
ans, err := value.gen(sub_ctx) ans, err := value.gen(sub_ctx)
if err != nil { if err != nil {
return nil, 0, syscall.EROFS // TODO we probably should figure out why it failed
return nil, 0, syscall.EIO
} }
fh = &sensorFileReadHandle{ fh = &sensorFileReadHandle{
@ -433,7 +437,7 @@ func (f *ITNode) Open(ctx context.Context, openFlags uint32) (fh fs.FileHandle,
} }
} }
} }
return nil, 0, syscall.EROFS return nil, 0, syscall.EINVAL
} }
var _ fs.NodeCreater = (*ITNode)(nil) var _ fs.NodeCreater = (*ITNode)(nil)
@ -480,6 +484,7 @@ func (f *ITNode) Mkdir(ctx context.Context, name string, mode uint32, out *fuse.
Str("path", path). Str("path", path).
Err(err). Err(err).
Send() Send()
// TODO we probably should figure out why it failed
return nil, syscall.EROFS return nil, syscall.EROFS
} }
@ -505,6 +510,10 @@ func (f *ITNode) Mkdir(ctx context.Context, name string, mode uint32, out *fuse.
var _ fs.NodeRenamer = (*ITNode)(nil) var _ fs.NodeRenamer = (*ITNode)(nil)
func (f *ITNode) Rename(ctx context.Context, name string, newParent fs.InodeEmbedder, newName string, flags uint32) syscall.Errno { 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
}
p1 := f.path + "/" + name p1 := f.path + "/" + name
p2 := newParent.EmbeddedInode().Path(nil)[2:] + "/" + newName p2 := newParent.EmbeddedInode().Path(nil)[2:] + "/" + newName
@ -516,7 +525,8 @@ func (f *ITNode) Rename(ctx context.Context, name string, newParent fs.InodeEmbe
Err(err). Err(err).
Send() Send()
return syscall.EROFS // TODO we probably should figure out why it failed
return syscall.EIO
} }
log.Debug("FUSE Rename sucess"). log.Debug("FUSE Rename sucess").
Str("src", p1). Str("src", p1).
@ -532,6 +542,10 @@ func (f *ITNode) Rename(ctx context.Context, name string, newParent fs.InodeEmbe
var _ fs.NodeUnlinker = (*ITNode)(nil) var _ fs.NodeUnlinker = (*ITNode)(nil)
func (f *ITNode) Unlink(ctx context.Context, name string) syscall.Errno { func (f *ITNode) Unlink(ctx context.Context, name string) syscall.Errno {
if f.kind != 2 {
return syscall.EROFS
}
delete(inodemap, f.path + "/" + name) delete(inodemap, f.path + "/" + name)
err := myfs.Remove(f.path + "/" + name) err := myfs.Remove(f.path + "/" + name)
if err != nil { if err != nil {
@ -540,7 +554,8 @@ func (f *ITNode) Unlink(ctx context.Context, name string) syscall.Errno {
Err(err). Err(err).
Send() Send()
return syscall.EROFS // TODO we probably should figure out why it failed
return syscall.EIO
} }
log.Debug("FUSE Unlink success"). log.Debug("FUSE Unlink success").