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Add filtering to mount command

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This commit is contained in:
Pauline Middelink 2017-03-08 19:59:19 +01:00
parent 3468108d4c
commit b1c8071163
2 changed files with 27 additions and 6 deletions
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16
src/cmds/restic/cmd_mount.go
View file

@ -35,6 +35,9 @@ type MountOptions struct {
OwnerRoot bool
AllowRoot bool
AllowOther bool
Host string
Tags []string
Paths []string
}
var mountOptions MountOptions
@ -42,9 +45,14 @@ var mountOptions MountOptions
func init() {
cmdRoot.AddCommand(cmdMount)
cmdMount.Flags().BoolVar(&mountOptions.OwnerRoot, "owner-root", false, "use 'root' as the owner of files and dirs")
cmdMount.Flags().BoolVar(&mountOptions.AllowRoot, "allow-root", false, "allow root user to access the data in the mounted directory")
cmdMount.Flags().BoolVar(&mountOptions.AllowOther, "allow-other", false, "allow other users to access the data in the mounted directory")
mountFlags := cmdMount.Flags()
mountFlags.BoolVar(&mountOptions.OwnerRoot, "owner-root", false, "use 'root' as the owner of files and dirs")
mountFlags.BoolVar(&mountOptions.AllowRoot, "allow-root", false, "allow root user to access the data in the mounted directory")
mountFlags.BoolVar(&mountOptions.AllowOther, "allow-other", false, "allow other users to access the data in the mounted directory")
mountFlags.StringVarP(&mountOptions.Host, "host", "H", "", `only consider snapshots for this host`)
mountFlags.StringSliceVar(&mountOptions.Tags, "tag", nil, "only consider snapshots which include this `tag`")
mountFlags.StringSliceVar(&mountOptions.Paths, "path", nil, "only consider snapshots which include this (absolute) `path`")
}
func mount(opts MountOptions, gopts GlobalOptions, mountpoint string) error {
@ -91,7 +99,7 @@ func mount(opts MountOptions, gopts GlobalOptions, mountpoint string) error {
Printf("Don't forget to umount after quitting!\n")
root := fs.Tree{}
root.Add("snapshots", fuse.NewSnapshotsDir(repo, opts.OwnerRoot))
root.Add("snapshots", fuse.NewSnapshotsDir(repo, opts.OwnerRoot, opts.Paths, opts.Tags, opts.Host))
debug.Log("serving mount at %v", mountpoint)
err = fs.Serve(c, &root)

17
src/restic/fuse/snapshot.go
View file

@ -32,6 +32,9 @@ var _ = fs.NodeStringLookuper(&SnapshotsDir{})
type SnapshotsDir struct {
repo restic.Repository
ownerIsRoot bool
paths []string
tags []string
host string
// knownSnapshots maps snapshot timestamp to the snapshot
sync.RWMutex
@ -40,12 +43,15 @@ type SnapshotsDir struct {
}
// NewSnapshotsDir returns a new dir object for the snapshots.
func NewSnapshotsDir(repo restic.Repository, ownerIsRoot bool) *SnapshotsDir {
func NewSnapshotsDir(repo restic.Repository, ownerIsRoot bool, paths []string, tags []string, host string) *SnapshotsDir {
debug.Log("fuse mount initiated")
return &SnapshotsDir{
repo: repo,
knownSnapshots: make(map[string]SnapshotWithId),
ownerIsRoot: ownerIsRoot,
paths: paths,
tags: tags,
host: host,
knownSnapshots: make(map[string]SnapshotWithId),
processed: restic.NewIDSet(),
}
}
@ -79,6 +85,13 @@ func (sn *SnapshotsDir) updateCache(ctx context.Context) error {
return err
}
// Filter snapshots we don't care for.
if (sn.host != "" && sn.host != snapshot.Hostname) ||
!snapshot.HasTags(sn.tags) ||
!snapshot.HasPaths(sn.paths) {
continue
}
timestamp := snapshot.Time.Format(time.RFC3339)
for i := 1; ; i++ {
if _, ok := sn.knownSnapshots[timestamp]; !ok {