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Factor new vfs module out of cmd/mountlib

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This is an OS style file system abstraction with directory caching
used in mount, cmount, serve webdav and serve http.
This commit is contained in:
Nick Craig-Wood
2017-10-28 20:01:34 +01:00
parent 6da6b2556b
commit c1aaff220d
20 changed files with 197 additions and 200 deletions
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24
cmd/mount/file.go
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@@ -7,21 +7,15 @@ import (
"bazil.org/fuse"
fusefs "bazil.org/fuse/fs"
"github.com/ncw/rclone/cmd/mountlib"
"github.com/ncw/rclone/fs"
"github.com/ncw/rclone/vfs"
"github.com/pkg/errors"
"golang.org/x/net/context"
)
// File represents a file
type File struct {
*mountlib.File
// size int64 // size of file - read and written with atomic int64 - must be 64 bit aligned
// d *Dir // parent directory - read only
// mu sync.RWMutex // protects the following
// o fs.Object // NB o may be nil if file is being written
// writers int // number of writers for this file
// pendingModTime time.Time // will be applied once o becomes available, i.e. after file was written
*vfs.File
}
// Check interface satisfied
@@ -33,9 +27,9 @@ func (f *File) Attr(ctx context.Context, a *fuse.Attr) (err error) {
modTime := f.File.ModTime()
Size := uint64(f.File.Size())
Blocks := (Size + 511) / 512
a.Gid = mountlib.GID
a.Uid = mountlib.UID
a.Mode = mountlib.FilePerms
a.Gid = vfs.GID
a.Uid = vfs.UID
a.Mode = vfs.FilePerms
a.Size = Size
a.Atime = modTime
a.Mtime = modTime
@@ -51,7 +45,7 @@ var _ fusefs.NodeSetattrer = (*File)(nil)
// Setattr handles attribute changes from FUSE. Currently supports ModTime only.
func (f *File) Setattr(ctx context.Context, req *fuse.SetattrRequest, resp *fuse.SetattrResponse) (err error) {
defer fs.Trace(f, "a=%+v", req)("err=%v", &err)
if mountlib.NoModTime {
if vfs.NoModTime {
return nil
}
if req.Valid.MtimeNow() {
@@ -70,15 +64,15 @@ func (f *File) Open(ctx context.Context, req *fuse.OpenRequest, resp *fuse.OpenR
defer fs.Trace(f, "flags=%v", req.Flags)("fh=%v, err=%v", &fh, &err)
switch {
case req.Flags.IsReadOnly():
if mountlib.NoSeek {
if vfs.NoSeek {
resp.Flags |= fuse.OpenNonSeekable
}
var rfh *mountlib.ReadFileHandle
var rfh *vfs.ReadFileHandle
rfh, err = f.File.OpenRead()
fh = &ReadFileHandle{rfh}
case req.Flags.IsWriteOnly() || (req.Flags.IsReadWrite() && (req.Flags&fuse.OpenTruncate) != 0):
resp.Flags |= fuse.OpenNonSeekable
var wfh *mountlib.WriteFileHandle
var wfh *vfs.WriteFileHandle
wfh, err = f.File.OpenWrite()
fh = &WriteFileHandle{wfh}
case req.Flags.IsReadWrite():