mirror of
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e43b5ce5e5
This is possible now that we no longer support go1.12 and brings rclone into line with standard practices in the Go world. This also removes errors.New and errors.Errorf from lib/errors and prefers the stdlib errors package over lib/errors.
105 lines
2.4 KiB
Go
105 lines
2.4 KiB
Go
package mountlib
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import (
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"fmt"
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"path/filepath"
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"runtime"
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"strings"
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"github.com/rclone/rclone/fs"
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)
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// ClipBlocks clips the blocks pointed to the OS max
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func ClipBlocks(b *uint64) {
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var max uint64
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switch runtime.GOOS {
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case "windows":
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if runtime.GOARCH == "386" {
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max = (1 << 32) - 1
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} else {
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max = (1 << 43) - 1
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}
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case "darwin":
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// OSX FUSE only supports 32 bit number of blocks
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// https://github.com/osxfuse/osxfuse/issues/396
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max = (1 << 32) - 1
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default:
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// no clipping
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return
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}
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if *b > max {
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*b = max
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}
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}
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// CheckOverlap checks that root doesn't overlap with mountpoint
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func (m *MountPoint) CheckOverlap() error {
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name := m.Fs.Name()
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if name != "" && name != "local" {
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return nil
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}
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rootAbs := absPath(m.Fs.Root())
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mountpointAbs := absPath(m.MountPoint)
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if strings.HasPrefix(rootAbs, mountpointAbs) || strings.HasPrefix(mountpointAbs, rootAbs) {
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const msg = "mount point %q and directory to be mounted %q mustn't overlap"
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return fmt.Errorf(msg, m.MountPoint, m.Fs.Root())
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}
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return nil
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}
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// absPath is a helper function for MountPoint.CheckOverlap
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func absPath(path string) string {
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if abs, err := filepath.EvalSymlinks(path); err == nil {
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path = abs
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}
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if abs, err := filepath.Abs(path); err == nil {
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path = abs
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}
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path = filepath.ToSlash(path)
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if !strings.HasSuffix(path, "/") {
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path += "/"
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}
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return path
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}
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// CheckAllowings informs about ignored flags on Windows. If not on Windows
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// and not --allow-non-empty flag is used, verify that mountpoint is empty.
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func (m *MountPoint) CheckAllowings() error {
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opt := &m.MountOpt
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if runtime.GOOS == "windows" {
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if opt.AllowNonEmpty {
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fs.Logf(nil, "--allow-non-empty flag does nothing on Windows")
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}
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if opt.AllowRoot {
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fs.Logf(nil, "--allow-root flag does nothing on Windows")
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}
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if opt.AllowOther {
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fs.Logf(nil, "--allow-other flag does nothing on Windows")
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}
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return nil
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}
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if !opt.AllowNonEmpty {
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return CheckMountEmpty(m.MountPoint)
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}
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return nil
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}
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// SetVolumeName with sensible default
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func (m *MountPoint) SetVolumeName(vol string) {
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if vol == "" {
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vol = m.Fs.Name() + ":" + m.Fs.Root()
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}
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m.MountOpt.SetVolumeName(vol)
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}
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// SetVolumeName removes special characters from volume name if necessary
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func (o *Options) SetVolumeName(vol string) {
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vol = strings.ReplaceAll(vol, ":", " ")
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vol = strings.ReplaceAll(vol, "/", " ")
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vol = strings.TrimSpace(vol)
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if runtime.GOOS == "windows" && len(vol) > 32 {
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vol = vol[:32]
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}
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o.VolumeName = vol
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}
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