/**
* ostree_repo_prune_from_reachable:
* @self: Repo
* @options: Options controlling prune process
* @out_objects_total: (out): Number of objects found
* @out_objects_pruned: (out): Number of objects deleted
* @out_pruned_object_size_total: (out): Storage size in bytes of objects deleted
* @cancellable: Cancellable
* @error: Error
*
* Delete content from the repository. This function is the "backend"
* half of the higher level ostree_repo_prune(). To use this function,
* you determine the root set yourself, and this function finds all other
* unreferenced objects and deletes them.
*
* Use this API when you want to perform more selective pruning - for example,
* retain all commits from a production branch, but just GC some history from
* your dev branch.
*
* The %OSTREE_REPO_PRUNE_FLAGS_NO_PRUNE flag may be specified to just determine
* statistics on objects that would be deleted, without actually deleting them.
*/
gboolean
ostree_repo_prune_from_reachable (OstreeRepo *self,
OstreeRepoPruneOptions *options,
gint *out_objects_total,
gint *out_objects_pruned,
guint64 *out_pruned_object_size_total,
GCancellable *cancellable,
GError **error)
{
g_autoptr(GHashTable) objects = NULL;
if (!ostree_repo_list_objects (self, OSTREE_REPO_LIST_OBJECTS_ALL | OSTREE_REPO_LIST_OBJECTS_NO_PARENTS,
&objects, cancellable, error))
return FALSE;
return repo_prune_internal (self, objects, options, out_objects_total,
out_objects_pruned, out_pruned_object_size_total,
cancellable, error);
}
gboolean
ostree_builtin_fsck (int argc, char **argv, OstreeCommandInvocation *invocation, GCancellable *cancellable, GError **error)
{
g_autoptr(OstreeRepo) repo = NULL;
gboolean found_corruption = FALSE;
g_autoptr(GOptionContext) context = g_option_context_new ("");
if (!ostree_option_context_parse (context, options, &argc, &argv, invocation, &repo, cancellable, error))
return FALSE;
if (!opt_quiet)
g_print ("Validating refs...\n");
/* Validate that the commit for each ref is available */
g_autoptr(GHashTable) all_refs = NULL;
if (!ostree_repo_list_refs (repo, NULL, &all_refs,
cancellable, error))
return FALSE;
GHashTableIter hash_iter;
gpointer key, value;
g_hash_table_iter_init (&hash_iter, all_refs);
while (g_hash_table_iter_next (&hash_iter, &key, &value))
{
const char *refspec = key;
const char *checksum = value;
g_autofree char *ref_name = NULL;
if (!ostree_parse_refspec (refspec, NULL, &ref_name, error))
return FALSE;
if (!fsck_commit_for_ref (repo, checksum, NULL, ref_name,
&found_corruption, cancellable, error))
return FALSE;
}
if (!opt_quiet)
g_print ("Validating refs in collections...\n");
g_autoptr(GHashTable) all_collection_refs = NULL; /* (element-type OstreeCollectionRef utf8) */
if (!ostree_repo_list_collection_refs (repo, NULL, &all_collection_refs,
OSTREE_REPO_LIST_REFS_EXT_EXCLUDE_REMOTES,
cancellable, error))
return FALSE;
g_hash_table_iter_init (&hash_iter, all_collection_refs);
while (g_hash_table_iter_next (&hash_iter, &key, &value))
{
const OstreeCollectionRef *ref = key;
if (!fsck_commit_for_ref (repo, value, ref->collection_id, ref->ref_name,
&found_corruption, cancellable, error))
return FALSE;
}
if (!opt_quiet)
g_print ("Enumerating objects...\n");
g_autoptr(GHashTable) objects = NULL;
if (!ostree_repo_list_objects (repo, OSTREE_REPO_LIST_OBJECTS_ALL,
&objects, cancellable, error))
return FALSE;
g_autoptr(GHashTable) commits = g_hash_table_new_full (ostree_hash_object_name, g_variant_equal,
(GDestroyNotify)g_variant_unref, NULL);
g_autoptr(GPtrArray) tombstones = NULL;
if (opt_add_tombstones)
tombstones = g_ptr_array_new_with_free_func (g_free);
if (opt_verify_back_refs)
opt_verify_bindings = TRUE;
guint n_partial = 0;
g_hash_table_iter_init (&hash_iter, objects);
while (g_hash_table_iter_next (&hash_iter, &key, &value))
{
GVariant *serialized_key = key;
const char *checksum;
OstreeObjectType objtype;
OstreeRepoCommitState commitstate = 0;
g_autoptr(GVariant) commit = NULL;
ostree_object_name_deserialize (serialized_key, &checksum, &objtype);
if (objtype == OSTREE_OBJECT_TYPE_COMMIT)
{
if (!ostree_repo_load_commit (repo, checksum, &commit, &commitstate, error))
return FALSE;
/* If requested, check that all the refs listed in the ref-bindings
* for this commit resolve back to this commit. */
if (opt_verify_back_refs)
{
g_autoptr(GVariant) metadata = g_variant_get_child_value (commit, 0);
const char *collection_id = NULL;
if (!g_variant_lookup (metadata,
OSTREE_COMMIT_META_KEY_COLLECTION_BINDING,
"&s",
&collection_id))
collection_id = NULL;
g_autofree const char **refs = NULL;
if (g_variant_lookup (metadata,
OSTREE_COMMIT_META_KEY_REF_BINDING,
"^a&s",
&refs))
{
for (const char **iter = refs; *iter != NULL; ++iter)
{
g_autofree char *checksum_for_ref = NULL;
if (collection_id != NULL)
{
const OstreeCollectionRef collection_ref = { (char *) collection_id, (char *) *iter };
if (!ostree_repo_resolve_collection_ref (repo, &collection_ref,
TRUE,
OSTREE_REPO_RESOLVE_REV_EXT_NONE,
&checksum_for_ref,
cancellable,
error))
return FALSE;
}
else
{
if (!ostree_repo_resolve_rev (repo, *iter, TRUE,
&checksum_for_ref, error))
return FALSE;
}
if (checksum_for_ref == NULL)
{
if (collection_id != NULL)
return glnx_throw (error,
"Collection–ref (%s, %s) in bindings for commit %s does not exist",
collection_id, *iter, checksum);
else
return glnx_throw (error,
"Ref ‘%s’ in bindings for commit %s does not exist",
*iter, checksum);
}
else if (g_strcmp0 (checksum_for_ref, checksum) != 0)
{
if (collection_id != NULL)
return glnx_throw (error,
"Collection–ref (%s, %s) in bindings for commit %s does not resolve to that commit",
collection_id, *iter, checksum);
else
return glnx_throw (error,
"Ref ‘%s’ in bindings for commit %s does not resolve to that commit",
*iter, checksum);
}
}
}
}
if (opt_add_tombstones)
{
GError *local_error = NULL;
g_autofree char *parent = ostree_commit_get_parent (commit);
if (parent)
{
g_autoptr(GVariant) parent_commit = NULL;
if (!ostree_repo_load_variant (repo, OSTREE_OBJECT_TYPE_COMMIT, parent,
&parent_commit, &local_error))
{
if (g_error_matches (local_error, G_IO_ERROR, G_IO_ERROR_NOT_FOUND))
{
g_ptr_array_add (tombstones, g_strdup (checksum));
g_clear_error (&local_error);
}
else
{
g_propagate_error (error, local_error);
return FALSE;
}
}
}
}
if (commitstate & OSTREE_REPO_COMMIT_STATE_PARTIAL)
n_partial++;
else
g_hash_table_add (commits, g_variant_ref (serialized_key));
}
}
g_clear_pointer (&objects, (GDestroyNotify) g_hash_table_unref);
if (!opt_quiet)
g_print ("Verifying content integrity of %u commit objects...\n",
(guint)g_hash_table_size (commits));
if (!fsck_reachable_objects_from_commits (repo, commits, &found_corruption,
cancellable, error))
return FALSE;
if (opt_add_tombstones)
{
guint i;
if (tombstones->len)
{
if (!ot_enable_tombstone_commits (repo, error))
return FALSE;
}
for (i = 0; i < tombstones->len; i++)
{
const char *checksum = tombstones->pdata[i];
g_print ("Adding tombstone for commit %s\n", checksum);
if (!ostree_repo_delete_object (repo, OSTREE_OBJECT_TYPE_COMMIT, checksum, cancellable, error))
return FALSE;
}
}
else if (n_partial > 0)
{
g_print ("%u partial commits not verified\n", n_partial);
}
if (found_corruption)
return glnx_throw (error, "Repository corruption encountered");
return TRUE;
}
gboolean
ostree_builtin_fsck (int argc, char **argv, GFile *repo_path, GError **error)
{
GOptionContext *context;
OtFsckData data;
gboolean ret = FALSE;
GCancellable *cancellable = NULL;
GHashTableIter hash_iter;
gpointer key, value;
ot_lobj OstreeRepo *repo = NULL;
ot_lhash GHashTable *objects = NULL;
ot_lhash GHashTable *commits = NULL;
context = g_option_context_new ("- Check the repository for consistency");
g_option_context_add_main_entries (context, options, NULL);
if (!g_option_context_parse (context, &argc, &argv, error))
goto out;
repo = ostree_repo_new (repo_path);
if (!ostree_repo_check (repo, error))
goto out;
memset (&data, 0, sizeof (data));
data.repo = repo;
g_print ("Enumerating objects...\n");
if (!ostree_repo_list_objects (repo, OSTREE_REPO_LIST_OBJECTS_ALL,
&objects, cancellable, error))
goto out;
commits = g_hash_table_new_full (ostree_hash_object_name, g_variant_equal,
(GDestroyNotify)g_variant_unref, NULL);
g_hash_table_iter_init (&hash_iter, objects);
while (g_hash_table_iter_next (&hash_iter, &key, &value))
{
GVariant *serialized_key = key;
const char *checksum;
OstreeObjectType objtype;
ostree_object_name_deserialize (serialized_key, &checksum, &objtype);
if (objtype == OSTREE_OBJECT_TYPE_COMMIT)
g_hash_table_insert (commits, g_variant_ref (serialized_key), serialized_key);
}
g_clear_pointer (&objects, (GDestroyNotify) g_hash_table_unref);
g_print ("Verifying content integrity of %u commit objects...\n",
(guint)g_hash_table_size (commits));
if (!fsck_reachable_objects_from_commits (&data, commits, cancellable, error))
goto out;
ret = TRUE;
out:
if (context)
g_option_context_free (context);
return ret;
}
static gboolean
prune_commits_keep_younger_than_date (OstreeRepo *repo, const char *date, GCancellable *cancellable, GError **error)
{
g_autoptr(GHashTable) refs = NULL;
g_autoptr(GHashTable) ref_heads = g_hash_table_new (g_str_hash, g_str_equal);
g_autoptr(GHashTable) objects = NULL;
GHashTableIter hash_iter;
gpointer key, value;
struct timespec ts;
gboolean ret = FALSE;
if (!parse_datetime (&ts, date, NULL))
{
g_set_error (error, G_IO_ERROR, G_IO_ERROR_FAILED,
"Could not parse '%s'", date);
goto out;
}
if (!ot_enable_tombstone_commits (repo, error))
goto out;
if (!ostree_repo_list_refs (repo, NULL, &refs, cancellable, error))
goto out;
/* We used to prune the HEAD of a given ref by default, but that's
* broken for a few reasons. One is that people may use branches as
* tags. Second is that if we do it, we should be deleting the ref
* too, otherwise e.g. `summary -u` breaks trying to load it, etc.
*/
g_hash_table_iter_init (&hash_iter, refs);
while (g_hash_table_iter_next (&hash_iter, &key, &value))
{
/* Value is lifecycle bound to refs */
g_hash_table_add (ref_heads, (char*)value);
}
if (!ostree_repo_list_objects (repo, OSTREE_REPO_LIST_OBJECTS_ALL, &objects,
cancellable, error))
goto out;
g_hash_table_iter_init (&hash_iter, objects);
while (g_hash_table_iter_next (&hash_iter, &key, &value))
{
GVariant *serialized_key = key;
const char *checksum;
OstreeObjectType objtype;
guint64 commit_timestamp;
g_autoptr(GVariant) commit = NULL;
ostree_object_name_deserialize (serialized_key, &checksum, &objtype);
if (objtype != OSTREE_OBJECT_TYPE_COMMIT)
continue;
if (g_hash_table_contains (ref_heads, checksum))
continue;
if (!ostree_repo_load_variant (repo, OSTREE_OBJECT_TYPE_COMMIT, checksum,
&commit, error))
goto out;
commit_timestamp = ostree_commit_get_timestamp (commit);
if (commit_timestamp < ts.tv_sec)
{
if (opt_static_deltas_only)
{
if(!ostree_repo_prune_static_deltas (repo, checksum, cancellable, error))
goto out;
}
else
{
if (!ostree_repo_delete_object (repo, OSTREE_OBJECT_TYPE_COMMIT, checksum, cancellable, error))
goto out;
}
}
}
ret = TRUE;
out:
return ret;
}
gboolean
ostree_builtin_fsck (int argc, char **argv, OstreeRepo *repo, GCancellable *cancellable, GError **error)
{
gboolean ret = FALSE;
GOptionContext *context;
GHashTableIter hash_iter;
gpointer key, value;
gboolean found_corruption = FALSE;
gs_unref_hashtable GHashTable *objects = NULL;
gs_unref_hashtable GHashTable *commits = NULL;
context = g_option_context_new ("- Check the repository for consistency");
g_option_context_add_main_entries (context, options, NULL);
if (!g_option_context_parse (context, &argc, &argv, error))
goto out;
if (!opt_quiet)
g_print ("Enumerating objects...\n");
if (!ostree_repo_list_objects (repo, OSTREE_REPO_LIST_OBJECTS_ALL,
&objects, cancellable, error))
goto out;
commits = g_hash_table_new_full (ostree_hash_object_name, g_variant_equal,
(GDestroyNotify)g_variant_unref, NULL);
g_hash_table_iter_init (&hash_iter, objects);
while (g_hash_table_iter_next (&hash_iter, &key, &value))
{
GVariant *serialized_key = key;
const char *checksum;
OstreeObjectType objtype;
ostree_object_name_deserialize (serialized_key, &checksum, &objtype);
if (objtype == OSTREE_OBJECT_TYPE_COMMIT)
g_hash_table_insert (commits, g_variant_ref (serialized_key), serialized_key);
}
g_clear_pointer (&objects, (GDestroyNotify) g_hash_table_unref);
if (!opt_quiet)
g_print ("Verifying content integrity of %u commit objects...\n",
(guint)g_hash_table_size (commits));
if (!fsck_reachable_objects_from_commits (repo, commits, &found_corruption,
cancellable, error))
goto out;
if (found_corruption)
{
g_set_error_literal (error, G_IO_ERROR, G_IO_ERROR_FAILED,
"Repository corruption encountered");
goto out;
}
ret = TRUE;
out:
if (context)
g_option_context_free (context);
return ret;
}
/**
* ostree_repo_prune:
* @self: Repo
* @flags: Options controlling prune process
* @depth: Stop traversal after this many iterations (-1 for unlimited)
* @out_objects_total: (out): Number of objects found
* @out_objects_pruned: (out): Number of objects deleted
* @out_pruned_object_size_total: (out): Storage size in bytes of objects deleted
* @cancellable: Cancellable
* @error: Error
*
* Delete content from the repository. By default, this function will
* only delete "orphaned" objects not referred to by any commit. This
* can happen during a local commit operation, when we have written
* content objects but not saved the commit referencing them.
*
* However, if %OSTREE_REPO_PRUNE_FLAGS_REFS_ONLY is provided, instead
* of traversing all commits, only refs will be used. Particularly
* when combined with @depth, this is a convenient way to delete
* history from the repository.
*
* Use the %OSTREE_REPO_PRUNE_FLAGS_NO_PRUNE to just determine
* statistics on objects that would be deleted, without actually
* deleting them.
*/
gboolean
ostree_repo_prune (OstreeRepo *self,
OstreeRepoPruneFlags flags,
gint depth,
gint *out_objects_total,
gint *out_objects_pruned,
guint64 *out_pruned_object_size_total,
GCancellable *cancellable,
GError **error)
{
GHashTableIter hash_iter;
gpointer key, value;
g_autoptr(GHashTable) objects = NULL;
g_autoptr(GHashTable) all_refs = NULL;
g_autoptr(GHashTable) reachable = NULL;
gboolean refs_only = flags & OSTREE_REPO_PRUNE_FLAGS_REFS_ONLY;
reachable = ostree_repo_traverse_new_reachable ();
/* This original prune API has fixed logic for traversing refs or all commits
* combined with actually deleting content. The newer backend API just does
* the deletion.
*/
if (refs_only)
{
if (!ostree_repo_list_refs (self, NULL, &all_refs,
cancellable, error))
return FALSE;
g_hash_table_iter_init (&hash_iter, all_refs);
while (g_hash_table_iter_next (&hash_iter, &key, &value))
{
const char *checksum = value;
g_debug ("Finding objects to keep for commit %s", checksum);
if (!ostree_repo_traverse_commit_union (self, checksum, depth, reachable,
cancellable, error))
return FALSE;
}
}
if (!ostree_repo_list_objects (self, OSTREE_REPO_LIST_OBJECTS_ALL | OSTREE_REPO_LIST_OBJECTS_NO_PARENTS,
&objects, cancellable, error))
return FALSE;
if (!refs_only)
{
g_hash_table_iter_init (&hash_iter, objects);
while (g_hash_table_iter_next (&hash_iter, &key, &value))
{
GVariant *serialized_key = key;
const char *checksum;
OstreeObjectType objtype;
ostree_object_name_deserialize (serialized_key, &checksum, &objtype);
if (objtype != OSTREE_OBJECT_TYPE_COMMIT)
continue;
g_debug ("Finding objects to keep for commit %s", checksum);
if (!ostree_repo_traverse_commit_union (self, checksum, depth, reachable,
cancellable, error))
return FALSE;
}
}
{ OstreeRepoPruneOptions opts = { flags, reachable };
return repo_prune_internal (self, objects, &opts,
out_objects_total, out_objects_pruned,
out_pruned_object_size_total, cancellable, error);
}
}
static gboolean
prune_commits_keep_younger_than_date (OstreeRepo *repo, const char *date, GCancellable *cancellable, GError **error)
{
g_autoptr(GHashTable) objects = NULL;
GHashTableIter hash_iter;
gpointer key, value;
struct timespec ts;
gboolean ret = FALSE;
if (!parse_datetime (&ts, date, NULL))
{
g_set_error (error, G_IO_ERROR, G_IO_ERROR_FAILED,
"Could not parse '%s'", date);
goto out;
}
if (!ot_enable_tombstone_commits (repo, error))
goto out;
if (!ostree_repo_list_objects (repo, OSTREE_REPO_LIST_OBJECTS_ALL, &objects,
cancellable, error))
goto out;
g_hash_table_iter_init (&hash_iter, objects);
while (g_hash_table_iter_next (&hash_iter, &key, &value))
{
GVariant *serialized_key = key;
const char *checksum;
OstreeObjectType objtype;
guint64 commit_timestamp;
g_autoptr(GVariant) commit = NULL;
ostree_object_name_deserialize (serialized_key, &checksum, &objtype);
if (objtype != OSTREE_OBJECT_TYPE_COMMIT)
continue;
if (!ostree_repo_load_variant (repo, OSTREE_OBJECT_TYPE_COMMIT, checksum,
&commit, error))
goto out;
commit_timestamp = ostree_commit_get_timestamp (commit);
if (commit_timestamp < ts.tv_sec)
{
if (opt_static_deltas_only)
{
if(!ostree_repo_prune_static_deltas (repo, checksum, cancellable, error))
goto out;
}
else
{
if (!ostree_repo_delete_object (repo, OSTREE_OBJECT_TYPE_COMMIT, checksum, cancellable, error))
goto out;
}
}
}
ret = TRUE;
out:
return ret;
}
