vfs: make cache dir absolute before using it to fix path too long errors

If --cache-dir is passed in as a relative path, then rclone will not
be able to turn it into a UNC path under Windows, which means that
file names longer than 260 chars will fail when stored in the cache.

This patch makes the --cache-dir path absolute before using it.

See: https://forum.rclone.org/t/handling-of-long-paths-on-windows-260-characters/20913
This commit is contained in:
Nick Craig-Wood 2020-12-09 22:36:38 +00:00
parent 816e68a274
commit 4f8ee736b1

View File

@ -81,9 +81,14 @@ func New(ctx context.Context, fremote fs.Fs, opt *vfscommon.Options, avFn AddVir
}
fRoot = strings.Replace(fRoot, ":", "", -1)
}
root := file.UNCPath(filepath.Join(config.CacheDir, "vfs", fremote.Name(), fRoot))
cacheDir := config.CacheDir
cacheDir, err := filepath.Abs(cacheDir)
if err != nil {
return nil, errors.Wrap(err, "failed to make --cache-dir absolute")
}
root := file.UNCPath(filepath.Join(cacheDir, "vfs", fremote.Name(), fRoot))
fs.Debugf(nil, "vfs cache: root is %q", root)
metaRoot := file.UNCPath(filepath.Join(config.CacheDir, "vfsMeta", fremote.Name(), fRoot))
metaRoot := file.UNCPath(filepath.Join(cacheDir, "vfsMeta", fremote.Name(), fRoot))
fs.Debugf(nil, "vfs cache: metadata root is %q", root)
fcache, err := fscache.Get(ctx, root)