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restic/internal/fuse/root.go
greatroar a7786c67f1 cmd, restic: Refactor and fix snapshot filtering
This turns snapshotFilterOptions from cmd into a restic.SnapshotFilter
type and makes restic.FindFilteredSnapshot and FindFilteredSnapshots
methods on that type. This fixes #4211 by ensuring that hosts and paths
are named struct fields instead of unnamed function arguments in long
lists of such.

Timestamp limits are also included in the new type. To avoid too much
pointer handling, the convention is that time zero means no limit.
That's January 1st, year 1, 00:00 UTC, which is so unlikely a date that
we can sacrifice it for simpler code.
2023-02-19 15:04:25 +01:00

78 lines
1.7 KiB
Go

//go:build darwin || freebsd || linux
// +build darwin freebsd linux
package fuse
import (
"os"
"github.com/restic/restic/internal/bloblru"
"github.com/restic/restic/internal/debug"
"github.com/restic/restic/internal/restic"
"github.com/anacrolix/fuse/fs"
)
// Config holds settings for the fuse mount.
type Config struct {
OwnerIsRoot bool
Filter restic.SnapshotFilter
TimeTemplate string
PathTemplates []string
}
// Root is the root node of the fuse mount of a repository.
type Root struct {
repo restic.Repository
cfg Config
blobCache *bloblru.Cache
*SnapshotsDir
uid, gid uint32
}
// ensure that *Root implements these interfaces
var _ = fs.HandleReadDirAller(&Root{})
var _ = fs.NodeStringLookuper(&Root{})
const rootInode = 1
// Size of the blob cache. TODO: make this configurable.
const blobCacheSize = 64 << 20
// NewRoot initializes a new root node from a repository.
func NewRoot(repo restic.Repository, cfg Config) *Root {
debug.Log("NewRoot(), config %v", cfg)
root := &Root{
repo: repo,
cfg: cfg,
blobCache: bloblru.New(blobCacheSize),
}
if !cfg.OwnerIsRoot {
root.uid = uint32(os.Getuid())
root.gid = uint32(os.Getgid())
}
// set defaults, if PathTemplates is not set
if len(cfg.PathTemplates) == 0 {
cfg.PathTemplates = []string{
"ids/%i",
"snapshots/%T",
"hosts/%h/%T",
"tags/%t/%T",
}
}
root.SnapshotsDir = NewSnapshotsDir(root, rootInode, rootInode, NewSnapshotsDirStructure(root, cfg.PathTemplates, cfg.TimeTemplate), "")
return root
}
// Root is just there to satisfy fs.Root, it returns itself.
func (r *Root) Root() (fs.Node, error) {
debug.Log("Root()")
return r, nil
}