TheArchive/restic
1
0
Fork 0
mirror of https://github.com/restic/restic.git synced 2025-12-12 08:12:39 +00:00
Code Issues Packages Projects Releases Wiki Activity

repository: restrict SaveUnpacked and RemoveUnpacked

Browse Source 
Those methods now only allow modifying snapshots. Internal data types
used by the repository are now read-only. The repository-internal code
can bypass the restrictions by wrapping the repository in an
`internalRepository` type.

The restriction itself is implemented by using a new datatype
WriteableFileType in the SaveUnpacked and RemoveUnpacked methods. This
statically ensures that code cannot bypass the access restrictions.

The test changes are somewhat noisy as some of them modify repository
internals and therefore require some way to bypass the access
restrictions. This works by capturing an `internalRepository` or
`Backend` when creating the Repository using a test helper function.
This commit is contained in:
Michael Eischer
2024-12-01 12:19:16 +01:00
parent 5bf0204caf
commit 99e105eeb6
37 changed files with 353 additions and 294 deletions
Download Patch File Download Diff File Expand all files Collapse all files

10
internal/repository/index/master_index.go
View File

@@ -321,7 +321,7 @@ type MasterIndexRewriteOpts struct {
// This is used by repair index to only rewrite and delete the old indexes.
//
// Must not be called concurrently to any other MasterIndex operation.
func (mi *MasterIndex) Rewrite(ctx context.Context, repo restic.Unpacked, excludePacks restic.IDSet, oldIndexes restic.IDSet, extraObsolete restic.IDs, opts MasterIndexRewriteOpts) error {
func (mi *MasterIndex) Rewrite(ctx context.Context, repo restic.Unpacked[restic.FileType], excludePacks restic.IDSet, oldIndexes restic.IDSet, extraObsolete restic.IDs, opts MasterIndexRewriteOpts) error {
for _, idx := range mi.idx {
if !idx.Final() {
panic("internal error - index must be saved before calling MasterIndex.Rewrite")
@@ -499,7 +499,7 @@ func (mi *MasterIndex) Rewrite(ctx context.Context, repo restic.Unpacked, exclud
// It is only intended for use by prune with the UnsafeRecovery option.
//
// Must not be called concurrently to any other MasterIndex operation.
func (mi *MasterIndex) SaveFallback(ctx context.Context, repo restic.SaverRemoverUnpacked, excludePacks restic.IDSet, p *progress.Counter) error {
func (mi *MasterIndex) SaveFallback(ctx context.Context, repo restic.SaverRemoverUnpacked[restic.FileType], excludePacks restic.IDSet, p *progress.Counter) error {
p.SetMax(uint64(len(mi.Packs(excludePacks))))
mi.idxMutex.Lock()
@@ -574,7 +574,7 @@ func (mi *MasterIndex) SaveFallback(ctx context.Context, repo restic.SaverRemove
}
// saveIndex saves all indexes in the backend.
func (mi *MasterIndex) saveIndex(ctx context.Context, r restic.SaverUnpacked, indexes ...*Index) error {
func (mi *MasterIndex) saveIndex(ctx context.Context, r restic.SaverUnpacked[restic.FileType], indexes ...*Index) error {
for i, idx := range indexes {
debug.Log("Saving index %d", i)
@@ -590,12 +590,12 @@ func (mi *MasterIndex) saveIndex(ctx context.Context, r restic.SaverUnpacked, in
}
// SaveIndex saves all new indexes in the backend.
func (mi *MasterIndex) SaveIndex(ctx context.Context, r restic.SaverUnpacked) error {
func (mi *MasterIndex) SaveIndex(ctx context.Context, r restic.SaverUnpacked[restic.FileType]) error {
return mi.saveIndex(ctx, r, mi.finalizeNotFinalIndexes()...)
}
// SaveFullIndex saves all full indexes in the backend.
func (mi *MasterIndex) SaveFullIndex(ctx context.Context, r restic.SaverUnpacked) error {
func (mi *MasterIndex) SaveFullIndex(ctx context.Context, r restic.SaverUnpacked[restic.FileType]) error {
return mi.saveIndex(ctx, r, mi.finalizeFullIndexes()...)
}