134 lines
3 KiB
Go
134 lines
3 KiB
Go
// FUSE main Fs
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//go:build linux || (darwin && amd64)
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package mount2
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import (
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"os"
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"syscall"
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"time"
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"github.com/hanwen/go-fuse/v2/fuse"
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"github.com/rclone/rclone/cmd/mountlib"
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"github.com/rclone/rclone/fs"
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"github.com/rclone/rclone/fs/fserrors"
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"github.com/rclone/rclone/fs/log"
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"github.com/rclone/rclone/vfs"
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)
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// FS represents the top level filing system
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type FS struct {
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VFS *vfs.VFS
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f fs.Fs
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opt *mountlib.Options
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}
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// NewFS creates a pathfs.FileSystem from the fs.Fs passed in
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func NewFS(VFS *vfs.VFS, opt *mountlib.Options) *FS {
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fsys := &FS{
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VFS: VFS,
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f: VFS.Fs(),
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opt: opt,
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}
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return fsys
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}
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// Root returns the root node
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func (f *FS) Root() (node *Node, err error) {
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defer log.Trace("", "")("node=%+v, err=%v", &node, &err)
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root, err := f.VFS.Root()
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if err != nil {
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return nil, err
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}
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return newNode(f, root), nil
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}
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// SetDebug if called, provide debug output through the log package.
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func (f *FS) SetDebug(debug bool) {
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fs.Debugf(f.f, "SetDebug %v", debug)
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}
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// get the Mode from a vfs Node
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func getMode(node os.FileInfo) uint32 {
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Mode := node.Mode().Perm()
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if node.IsDir() {
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Mode |= fuse.S_IFDIR
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} else {
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Mode |= fuse.S_IFREG
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}
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return uint32(Mode)
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}
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// fill in attr from node
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func setAttr(node vfs.Node, attr *fuse.Attr) {
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Size := uint64(node.Size())
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const BlockSize = 512
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Blocks := (Size + BlockSize - 1) / BlockSize
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modTime := node.ModTime()
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// set attributes
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vfs := node.VFS()
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attr.Owner.Gid = vfs.Opt.GID
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attr.Owner.Uid = vfs.Opt.UID
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attr.Mode = getMode(node)
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attr.Size = Size
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attr.Nlink = 1
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attr.Blocks = Blocks
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// attr.Blksize = BlockSize // not supported in freebsd/darwin, defaults to 4k if not set
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s := uint64(modTime.Unix())
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ns := uint32(modTime.Nanosecond())
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attr.Atime = s
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attr.Atimensec = ns
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attr.Mtime = s
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attr.Mtimensec = ns
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attr.Ctime = s
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attr.Ctimensec = ns
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//attr.Rdev
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}
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// fill in AttrOut from node
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func (f *FS) setAttrOut(node vfs.Node, out *fuse.AttrOut) {
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setAttr(node, &out.Attr)
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out.SetTimeout(time.Duration(f.opt.AttrTimeout))
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}
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// fill in EntryOut from node
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func (f *FS) setEntryOut(node vfs.Node, out *fuse.EntryOut) {
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setAttr(node, &out.Attr)
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out.SetEntryTimeout(time.Duration(f.opt.AttrTimeout))
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out.SetAttrTimeout(time.Duration(f.opt.AttrTimeout))
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}
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// Translate errors from mountlib into Syscall error numbers
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func translateError(err error) syscall.Errno {
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if err == nil {
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return 0
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}
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_, uErr := fserrors.Cause(err)
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switch uErr {
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case vfs.OK:
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return 0
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case vfs.ENOENT, fs.ErrorDirNotFound, fs.ErrorObjectNotFound:
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return syscall.ENOENT
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case vfs.EEXIST, fs.ErrorDirExists:
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return syscall.EEXIST
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case vfs.EPERM, fs.ErrorPermissionDenied:
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return syscall.EPERM
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case vfs.ECLOSED:
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return syscall.EBADF
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case vfs.ENOTEMPTY:
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return syscall.ENOTEMPTY
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case vfs.ESPIPE:
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return syscall.ESPIPE
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case vfs.EBADF:
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return syscall.EBADF
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case vfs.EROFS:
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return syscall.EROFS
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case vfs.ENOSYS, fs.ErrorNotImplemented:
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return syscall.ENOSYS
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case vfs.EINVAL:
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return syscall.EINVAL
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}
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fs.Errorf(nil, "IO error: %v", err)
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return syscall.EIO
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}
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