/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- * * Copyright (C) 2011 Colin Walters * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the * Free Software Foundation, Inc., 59 Temple Place - Suite 330, * Boston, MA 02111-1307, USA. * * Author: Colin Walters */ #include "config.h" #include #include #include #include #include #include "ostree-repo-private.h" #include "ostree-core-private.h" #include "ostree-mutable-tree.h" #include "ostree-checksum-input-stream.h" #include "otutil.h" #include "libgsystem.h" #include "ostree-repo-file-enumerator.h" /** * SECTION:libostree-repo * @title: Content-addressed object store * @short_description: A git-like storage system for operating system binaries * * The #OstreeRepo is like git, a content-addressed object store. * Unlike git, it records uid, gid, and extended attributes. * * There are two possible "modes" for an #OstreeRepo; * %OSTREE_REPO_MODE_BARE is very simple - content files are * represented exactly as they are, and checkouts are just hardlinks. * A %OSTREE_REPO_MODE_ARCHIVE_Z2 repository in contrast stores * content files zlib-compressed. It is suitable for non-root-owned * repositories that can be served via a static HTTP server. * * Creating an #OstreeRepo does not invoke any file I/O, and thus needs * to be initialized, either from an existing contents or with a new * repository. If you have an existing repo, use ostree_repo_open() * to load it from disk and check its validity. To initialize a new * repository in the given filepath, use ostree_repo_create() instead. * * To store content in the repo, first start a transaction with * ostree_repo_prepare_transaction(). Then create a * #OstreeMutableTree, and apply functions such as * ostree_repo_stage_directory_to_mtree() to traverse a physical * filesystem and stage content, possibly multiple times. * * Once the #OstreeMutableTree is complete, stage all of its metadata * with ostree_repo_stage_mtree(), and finally create a commit with * ostree_repo_stage_commit(). */ typedef struct { GObjectClass parent_class; } OstreeRepoClass; static gboolean repo_find_object (OstreeRepo *self, OstreeObjectType objtype, const char *checksum, GFile **out_stored_path, GCancellable *cancellable, GError **error); enum { PROP_0, PROP_PATH }; G_DEFINE_TYPE (OstreeRepo, ostree_repo, G_TYPE_OBJECT) static void ostree_repo_finalize (GObject *object) { OstreeRepo *self = OSTREE_REPO (object); g_clear_object (&self->parent_repo); g_clear_object (&self->repodir); g_clear_object (&self->tmp_dir); if (self->tmp_dir_fd) (void) close (self->tmp_dir_fd); g_clear_object (&self->pending_dir); g_clear_object (&self->local_heads_dir); g_clear_object (&self->remote_heads_dir); g_clear_object (&self->objects_dir); g_clear_object (&self->uncompressed_objects_dir); g_clear_object (&self->remote_cache_dir); g_clear_object (&self->config_file); g_clear_object (&self->transaction_lock_path); if (self->loose_object_devino_hash) g_hash_table_destroy (self->loose_object_devino_hash); if (self->updated_uncompressed_dirs) g_hash_table_destroy (self->updated_uncompressed_dirs); if (self->config) g_key_file_free (self->config); g_clear_pointer (&self->cached_meta_indexes, (GDestroyNotify) g_ptr_array_unref); g_clear_pointer (&self->cached_content_indexes, (GDestroyNotify) g_ptr_array_unref); g_mutex_clear (&self->cache_lock); g_mutex_clear (&self->txn_stats_lock); G_OBJECT_CLASS (ostree_repo_parent_class)->finalize (object); } static void ostree_repo_set_property(GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec) { OstreeRepo *self = OSTREE_REPO (object); switch (prop_id) { case PROP_PATH: /* Canonicalize */ self->repodir = g_file_new_for_path (gs_file_get_path_cached (g_value_get_object (value))); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } } static void ostree_repo_get_property(GObject *object, guint prop_id, GValue *value, GParamSpec *pspec) { OstreeRepo *self = OSTREE_REPO (object); switch (prop_id) { case PROP_PATH: g_value_set_object (value, self->repodir); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } } static void ostree_repo_constructed (GObject *object) { OstreeRepo *self = OSTREE_REPO (object); g_assert (self->repodir != NULL); self->tmp_dir = g_file_resolve_relative_path (self->repodir, "tmp"); self->pending_dir = g_file_resolve_relative_path (self->repodir, "tmp/pending"); self->local_heads_dir = g_file_resolve_relative_path (self->repodir, "refs/heads"); self->remote_heads_dir = g_file_resolve_relative_path (self->repodir, "refs/remotes"); self->objects_dir = g_file_get_child (self->repodir, "objects"); self->uncompressed_objects_dir = g_file_get_child (self->repodir, "uncompressed-objects-cache"); self->remote_cache_dir = g_file_get_child (self->repodir, "remote-cache"); self->config_file = g_file_get_child (self->repodir, "config"); G_OBJECT_CLASS (ostree_repo_parent_class)->constructed (object); } static void ostree_repo_class_init (OstreeRepoClass *klass) { GObjectClass *object_class = G_OBJECT_CLASS (klass); object_class->constructed = ostree_repo_constructed; object_class->get_property = ostree_repo_get_property; object_class->set_property = ostree_repo_set_property; object_class->finalize = ostree_repo_finalize; g_object_class_install_property (object_class, PROP_PATH, g_param_spec_object ("path", "", "", G_TYPE_FILE, G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY)); } static void ostree_repo_init (OstreeRepo *self) { g_mutex_init (&self->cache_lock); g_mutex_init (&self->txn_stats_lock); } /** * ostree_repo_new: * @path: Path to a repository * * Returns: (transfer full): An accessor object for an OSTree repository located at @path */ OstreeRepo* ostree_repo_new (GFile *path) { return g_object_new (OSTREE_TYPE_REPO, "path", path, NULL); } /** * ostree_repo_new_default: * * If the current working directory appears to be an OSTree * repository, create a new #OstreeRepo object for accessing it. * Otherwise, use the default system repository located at * /ostree/repo. * * Returns: (transfer full): An accessor object for an OSTree repository located at /ostree/repo */ OstreeRepo* ostree_repo_new_default (void) { if (g_file_test ("objects", G_FILE_TEST_IS_DIR) && g_file_test ("config", G_FILE_TEST_IS_REGULAR)) { gs_unref_object GFile *cwd = g_file_new_for_path ("."); return ostree_repo_new (cwd); } else { gs_unref_object GFile *default_repo_path = g_file_new_for_path ("/ostree/repo"); return ostree_repo_new (default_repo_path); } } /** * ostree_repo_get_config: * @self: * * Returns: (transfer none): The repository configuration; do not modify */ GKeyFile * ostree_repo_get_config (OstreeRepo *self) { g_return_val_if_fail (self->inited, NULL); return self->config; } /** * ostree_repo_copy_config: * @self: * * Returns: (transfer full): A newly-allocated copy of the repository config */ GKeyFile * ostree_repo_copy_config (OstreeRepo *self) { GKeyFile *copy; char *data; gsize len; g_return_val_if_fail (self->inited, NULL); copy = g_key_file_new (); data = g_key_file_to_data (self->config, &len, NULL); if (!g_key_file_load_from_data (copy, data, len, 0, NULL)) g_assert_not_reached (); g_free (data); return copy; } /** * ostree_repo_write_config: * @self: Repo * @new_config: Overwrite the config file with this data. Do not change later! * @error: a #GError * * Save @new_config in place of this repository's config file. Note * that @new_config should not be modified after - this function * simply adds a reference. */ gboolean ostree_repo_write_config (OstreeRepo *self, GKeyFile *new_config, GError **error) { gboolean ret = FALSE; gs_free char *data = NULL; gsize len; g_return_val_if_fail (self->inited, FALSE); data = g_key_file_to_data (new_config, &len, error); if (!g_file_replace_contents (self->config_file, data, len, NULL, FALSE, 0, NULL, NULL, error)) goto out; g_key_file_free (self->config); self->config = g_key_file_new (); if (!g_key_file_load_from_data (self->config, data, len, 0, error)) goto out; ret = TRUE; out: return ret; } static gboolean ostree_repo_mode_to_string (OstreeRepoMode mode, const char **out_mode, GError **error) { gboolean ret = FALSE; const char *ret_mode; switch (mode) { case OSTREE_REPO_MODE_BARE: ret_mode = "bare"; break; case OSTREE_REPO_MODE_ARCHIVE_Z2: ret_mode ="archive-z2"; break; default: g_set_error (error, G_IO_ERROR, G_IO_ERROR_FAILED, "Invalid mode '%d'", mode); goto out; } ret = TRUE; *out_mode = ret_mode; out: return ret; } gboolean ostree_repo_mode_from_string (const char *mode, OstreeRepoMode *out_mode, GError **error) { gboolean ret = FALSE; OstreeRepoMode ret_mode; if (strcmp (mode, "bare") == 0) ret_mode = OSTREE_REPO_MODE_BARE; else if (strcmp (mode, "archive-z2") == 0) ret_mode = OSTREE_REPO_MODE_ARCHIVE_Z2; else { g_set_error (error, G_IO_ERROR, G_IO_ERROR_FAILED, "Invalid mode '%s' in repository configuration", mode); goto out; } ret = TRUE; *out_mode = ret_mode; out: return ret; } #define DEFAULT_CONFIG_CONTENTS ("[core]\n" \ "repo_version=1\n") /** * ostree_repo_create: * @self: An #OstreeRepo * @mode: The mode to store the repository in * @cancellable: Cancellable * @error: Error * * Create the underlying structure on disk for the * repository. */ gboolean ostree_repo_create (OstreeRepo *self, OstreeRepoMode mode, GCancellable *cancellable, GError **error) { gboolean ret = FALSE; GString *config_data = NULL; gs_unref_object GFile *child = NULL; gs_unref_object GFile *grandchild = NULL; const char *mode_str; if (!ostree_repo_mode_to_string (mode, &mode_str, error)) goto out; if (!gs_file_ensure_directory (self->repodir, FALSE, cancellable, error)) goto out; config_data = g_string_new (DEFAULT_CONFIG_CONTENTS); g_string_append_printf (config_data, "mode=%s\n", mode_str); if (!g_file_replace_contents (self->config_file, config_data->str, config_data->len, NULL, FALSE, 0, NULL, cancellable, error)) goto out; if (!g_file_make_directory (self->objects_dir, cancellable, error)) goto out; if (!g_file_make_directory (self->tmp_dir, cancellable, error)) goto out; if (!g_file_make_directory (self->remote_cache_dir, cancellable, error)) goto out; g_clear_object (&child); child = g_file_get_child (self->repodir, "refs"); if (!g_file_make_directory (child, cancellable, error)) goto out; g_clear_object (&grandchild); grandchild = g_file_get_child (child, "heads"); if (!g_file_make_directory (grandchild, cancellable, error)) goto out; g_clear_object (&grandchild); grandchild = g_file_get_child (child, "remotes"); if (!g_file_make_directory (grandchild, cancellable, error)) goto out; if (!ostree_repo_open (self, cancellable, error)) goto out; ret = TRUE; out: if (config_data) g_string_free (config_data, TRUE); return ret; } gboolean ostree_repo_open (OstreeRepo *self, GCancellable *cancellable, GError **error) { gboolean ret = FALSE; gboolean is_archive; gs_free char *version = NULL; gs_free char *mode = NULL; gs_free char *parent_repo_path = NULL; g_return_val_if_fail (error == NULL || *error == NULL, FALSE); if (self->inited) return TRUE; if (!g_file_test (gs_file_get_path_cached (self->objects_dir), G_FILE_TEST_IS_DIR)) { g_set_error (error, G_IO_ERROR, G_IO_ERROR_NOT_FOUND, "Couldn't find objects directory '%s'", gs_file_get_path_cached (self->objects_dir)); goto out; } if (!gs_file_ensure_directory (self->pending_dir, FALSE, cancellable, error)) goto out; self->config = g_key_file_new (); if (!g_key_file_load_from_file (self->config, gs_file_get_path_cached (self->config_file), 0, error)) { g_prefix_error (error, "Couldn't parse config file: "); goto out; } version = g_key_file_get_value (self->config, "core", "repo_version", error); if (!version) goto out; if (strcmp (version, "1") != 0) { g_set_error (error, G_IO_ERROR, G_IO_ERROR_FAILED, "Invalid repository version '%s'", version); goto out; } if (!ot_keyfile_get_boolean_with_default (self->config, "core", "archive", FALSE, &is_archive, error)) goto out; if (is_archive) { g_set_error (error, G_IO_ERROR, G_IO_ERROR_NOT_SUPPORTED, "This version of OSTree no longer supports \"archive\" repositories; use archive-z2 instead"); goto out; } if (!ot_keyfile_get_value_with_default (self->config, "core", "mode", "bare", &mode, error)) goto out; if (!ostree_repo_mode_from_string (mode, &self->mode, error)) goto out; if (!ot_keyfile_get_value_with_default (self->config, "core", "parent", NULL, &parent_repo_path, error)) goto out; if (parent_repo_path && parent_repo_path[0]) { gs_unref_object GFile *parent_repo_f = g_file_new_for_path (parent_repo_path); self->parent_repo = ostree_repo_new (parent_repo_f); if (!ostree_repo_open (self->parent_repo, cancellable, error)) { g_prefix_error (error, "While checking parent repository '%s': ", gs_file_get_path_cached (parent_repo_f)); goto out; } } if (!ot_keyfile_get_boolean_with_default (self->config, "core", "enable-uncompressed-cache", TRUE, &self->enable_uncompressed_cache, error)) goto out; if (!gs_file_open_dir_fd (self->tmp_dir, &self->tmp_dir_fd, cancellable, error)) goto out; self->inited = TRUE; ret = TRUE; out: return ret; } /** * ostree_repo_get_path: * @self: * * Returns: (transfer none): Path to repo */ GFile * ostree_repo_get_path (OstreeRepo *self) { return self->repodir; } OstreeRepoMode ostree_repo_get_mode (OstreeRepo *self) { g_return_val_if_fail (self->inited, FALSE); return self->mode; } /** * ostree_repo_get_parent: * @self: Repo * * Before this function can be used, ostree_repo_init() must have been * called. * * Returns: (transfer none): Parent repository, or %NULL if none */ OstreeRepo * ostree_repo_get_parent (OstreeRepo *self) { return self->parent_repo; } GFile * _ostree_repo_get_file_object_path (OstreeRepo *self, const char *checksum) { return _ostree_repo_get_object_path (self, checksum, OSTREE_OBJECT_TYPE_FILE); } static gboolean commit_loose_object_impl (OstreeRepo *self, GFile *tempfile_path, GFile *dest, gboolean is_regular, GCancellable *cancellable, GError **error) { gboolean ret = FALSE; gs_unref_object GFile *parent = NULL; parent = g_file_get_parent (dest); if (!gs_file_ensure_directory (parent, FALSE, cancellable, error)) goto out; if (is_regular) { /* Ensure that in case of a power cut, these files have the data we * want. See http://lwn.net/Articles/322823/ */ if (!gs_file_sync_data (tempfile_path, cancellable, error)) goto out; } if (rename (gs_file_get_path_cached (tempfile_path), gs_file_get_path_cached (dest)) < 0) { if (errno != EEXIST) { ot_util_set_error_from_errno (error, errno); g_prefix_error (error, "Storing file '%s': ", gs_file_get_path_cached (dest)); goto out; } } ret = TRUE; out: return ret; } static gboolean commit_loose_object_trusted (OstreeRepo *self, const char *checksum, OstreeObjectType objtype, GFile *tempfile_path, gboolean is_regular, GCancellable *cancellable, GError **error) { gboolean ret = FALSE; gs_unref_object GFile *dest_file = NULL; dest_file = _ostree_repo_get_object_path (self, checksum, objtype); if (!commit_loose_object_impl (self, tempfile_path, dest_file, is_regular, cancellable, error)) goto out; ret = TRUE; out: return ret; } /* Create a randomly-named symbolic link in @tempdir which points to * @target. The filename will be returned in @out_file. * * The reason this odd function exists is that the repo should only * contain objects in their final state. For bare repositories, we * need to first create the symlink, then chown it, and apply all * extended attributes, before finally rename()ing it into place. */ static gboolean make_temporary_symlink (GFile *tmpdir, const char *target, GFile **out_file, GCancellable *cancellable, GError **error) { gboolean ret = FALSE; gs_free char *tmpname = NULL; DIR *d = NULL; int dfd = -1; guint i; const int max_attempts = 128; d = opendir (gs_file_get_path_cached (tmpdir)); if (!d) { int errsv = errno; g_set_error_literal (error, G_IO_ERROR, g_io_error_from_errno (errsv), g_strerror (errsv)); goto out; } dfd = dirfd (d); for (i = 0; i < max_attempts; i++) { g_free (tmpname); tmpname = gsystem_fileutil_gen_tmp_name (NULL, NULL); if (symlinkat (target, dfd, tmpname) < 0) { if (errno == EEXIST) continue; else { int errsv = errno; g_set_error_literal (error, G_IO_ERROR, g_io_error_from_errno (errsv), g_strerror (errsv)); goto out; } } else break; } if (i == max_attempts) { g_set_error (error, G_IO_ERROR, G_IO_ERROR_FAILED, "Exhausted attempts to open temporary file"); goto out; } ret = TRUE; *out_file = g_file_get_child (tmpdir, tmpname); out: if (d) (void) closedir (d); return ret; } static gboolean stage_object (OstreeRepo *self, OstreeObjectType objtype, const char *expected_checksum, GInputStream *input, guint64 file_object_length, guchar **out_csum, GCancellable *cancellable, GError **error) { gboolean ret = FALSE; const char *actual_checksum; gboolean do_commit; OstreeRepoMode repo_mode; gs_free char *temp_filename = NULL; gs_unref_object GFile *temp_file = NULL; gs_unref_object GFile *raw_temp_file = NULL; gs_unref_object GFile *stored_path = NULL; gs_free guchar *ret_csum = NULL; gs_unref_object OstreeChecksumInputStream *checksum_input = NULL; gs_unref_object GInputStream *file_input = NULL; gs_unref_object GFileInfo *file_info = NULL; gs_unref_variant GVariant *xattrs = NULL; gboolean have_obj; GChecksum *checksum = NULL; gboolean temp_file_is_regular; gboolean is_symlink = FALSE; g_return_val_if_fail (self->in_transaction, FALSE); if (g_cancellable_set_error_if_cancelled (cancellable, error)) return FALSE; g_assert (expected_checksum || out_csum); if (expected_checksum) { if (!repo_find_object (self, objtype, expected_checksum, &stored_path, cancellable, error)) goto out; } repo_mode = ostree_repo_get_mode (self); if (out_csum) { checksum = g_checksum_new (G_CHECKSUM_SHA256); if (input) checksum_input = ostree_checksum_input_stream_new (input, checksum); } if (objtype == OSTREE_OBJECT_TYPE_FILE) { if (!ostree_content_stream_parse (FALSE, checksum_input ? (GInputStream*)checksum_input : input, file_object_length, FALSE, &file_input, &file_info, &xattrs, cancellable, error)) goto out; temp_file_is_regular = g_file_info_get_file_type (file_info) == G_FILE_TYPE_REGULAR; is_symlink = g_file_info_get_file_type (file_info) == G_FILE_TYPE_SYMBOLIC_LINK; if (!(temp_file_is_regular || is_symlink)) { g_set_error (error, G_IO_ERROR, G_IO_ERROR_NOT_SUPPORTED, "Unsupported file type %u", g_file_info_get_file_type (file_info)); goto out; } /* For regular files, we create them with default mode, and only * later apply any xattrs and setuid bits. The rationale here * is that an attacker on the network with the ability to MITM * could potentially cause the system to make a temporary setuid * binary with trailing garbage, creating a window on the local * system where a malicious setuid binary exists. */ if (repo_mode == OSTREE_REPO_MODE_BARE && temp_file_is_regular) { gs_unref_object GOutputStream *temp_out = NULL; if (!gs_file_open_in_tmpdir_at (self->tmp_dir_fd, 0644, &temp_filename, &temp_out, cancellable, error)) goto out; temp_file = g_file_get_child (self->tmp_dir, temp_filename); if (g_output_stream_splice (temp_out, file_input, G_OUTPUT_STREAM_SPLICE_CLOSE_TARGET, cancellable, error) < 0) goto out; } else if (repo_mode == OSTREE_REPO_MODE_BARE && is_symlink) { if (!make_temporary_symlink (self->tmp_dir, g_file_info_get_symlink_target (file_info), &temp_file, cancellable, error)) goto out; } else if (repo_mode == OSTREE_REPO_MODE_ARCHIVE_Z2) { gs_unref_variant GVariant *file_meta = NULL; gs_unref_object GOutputStream *temp_out = NULL; gs_unref_object GConverter *zlib_compressor = NULL; gs_unref_object GOutputStream *compressed_out_stream = NULL; if (!gs_file_open_in_tmpdir_at (self->tmp_dir_fd, 0644, &temp_filename, &temp_out, cancellable, error)) goto out; temp_file = g_file_get_child (self->tmp_dir, temp_filename); temp_file_is_regular = TRUE; file_meta = _ostree_zlib_file_header_new (file_info, xattrs); if (!_ostree_write_variant_with_size (temp_out, file_meta, 0, NULL, NULL, cancellable, error)) goto out; if (g_file_info_get_file_type (file_info) == G_FILE_TYPE_REGULAR) { zlib_compressor = (GConverter*)g_zlib_compressor_new (G_ZLIB_COMPRESSOR_FORMAT_RAW, 9); compressed_out_stream = g_converter_output_stream_new (temp_out, zlib_compressor); if (g_output_stream_splice (compressed_out_stream, file_input, G_OUTPUT_STREAM_SPLICE_CLOSE_TARGET, cancellable, error) < 0) goto out; } if (!g_output_stream_close (temp_out, cancellable, error)) goto out; } else g_assert_not_reached (); } else { gs_unref_object GOutputStream *temp_out = NULL; if (!gs_file_open_in_tmpdir_at (self->tmp_dir_fd, 0644, &temp_filename, &temp_out, cancellable, error)) goto out; temp_file = g_file_get_child (self->tmp_dir, temp_filename); if (g_output_stream_splice (temp_out, checksum_input ? (GInputStream*)checksum_input : input, G_OUTPUT_STREAM_SPLICE_CLOSE_TARGET, cancellable, error) < 0) goto out; temp_file_is_regular = TRUE; } if (!checksum) actual_checksum = expected_checksum; else { actual_checksum = g_checksum_get_string (checksum); if (expected_checksum && strcmp (actual_checksum, expected_checksum) != 0) { g_set_error (error, G_IO_ERROR, G_IO_ERROR_FAILED, "Corrupted %s object %s (actual checksum is %s)", ostree_object_type_to_string (objtype), expected_checksum, actual_checksum); goto out; } } if (!ostree_repo_has_object (self, objtype, actual_checksum, &have_obj, cancellable, error)) goto out; do_commit = !have_obj; if (do_commit) { if (objtype == OSTREE_OBJECT_TYPE_FILE && repo_mode == OSTREE_REPO_MODE_BARE) { g_assert (file_info != NULL); /* Now that we know the checksum is valid, apply uid/gid, mode bits, * and extended attributes. */ if (!gs_file_lchown (temp_file, g_file_info_get_attribute_uint32 (file_info, "unix::uid"), g_file_info_get_attribute_uint32 (file_info, "unix::gid"), cancellable, error)) goto out; /* symlinks are always 777, there's no lchmod(). Calling * chmod() on them would apply to their target, which we * definitely don't want. */ if (!is_symlink) { if (!gs_file_chmod (temp_file, g_file_info_get_attribute_uint32 (file_info, "unix::mode"), cancellable, error)) goto out; } if (xattrs != NULL) { if (!ostree_set_xattrs (temp_file, xattrs, cancellable, error)) goto out; } } if (!commit_loose_object_trusted (self, actual_checksum, objtype, temp_file, temp_file_is_regular, cancellable, error)) goto out; g_clear_object (&temp_file); } g_mutex_lock (&self->txn_stats_lock); if (do_commit) { if (OSTREE_OBJECT_TYPE_IS_META (objtype)) { self->txn_metadata_objects_written++; } else { self->txn_content_objects_written++; self->txn_content_bytes_written += file_object_length; } } if (OSTREE_OBJECT_TYPE_IS_META (objtype)) self->txn_metadata_objects_total++; else self->txn_content_objects_total++; g_mutex_unlock (&self->txn_stats_lock); if (checksum) ret_csum = ot_csum_from_gchecksum (checksum); ret = TRUE; ot_transfer_out_value(out_csum, &ret_csum); out: if (temp_file) (void) unlink (gs_file_get_path_cached (temp_file)); if (raw_temp_file) (void) unlink (gs_file_get_path_cached (raw_temp_file)); g_clear_pointer (&checksum, (GDestroyNotify) g_checksum_free); return ret; } static gboolean append_object_dirs_from (OstreeRepo *self, GFile *dir, GPtrArray *object_dirs, GCancellable *cancellable, GError **error) { gboolean ret = FALSE; GError *temp_error = NULL; gs_unref_object GFileEnumerator *enumerator = NULL; enumerator = g_file_enumerate_children (dir, OSTREE_GIO_FAST_QUERYINFO, G_FILE_QUERY_INFO_NOFOLLOW_SYMLINKS, cancellable, &temp_error); if (!enumerator) { if (g_error_matches (temp_error, G_IO_ERROR, G_IO_ERROR_NOT_FOUND)) { g_clear_error (&temp_error); ret = TRUE; } else g_propagate_error (error, temp_error); goto out; } while (TRUE) { GFileInfo *file_info; const char *name; guint32 type; if (!gs_file_enumerator_iterate (enumerator, &file_info, NULL, NULL, error)) goto out; if (file_info == NULL) break; name = g_file_info_get_attribute_byte_string (file_info, "standard::name"); type = g_file_info_get_attribute_uint32 (file_info, "standard::type"); if (strlen (name) == 2 && type == G_FILE_TYPE_DIRECTORY) { GFile *objdir = g_file_get_child (g_file_enumerator_get_container (enumerator), name); g_ptr_array_add (object_dirs, objdir); /* transfer ownership */ } } ret = TRUE; out: return ret; } static gboolean get_loose_object_dirs (OstreeRepo *self, GPtrArray **out_object_dirs, GCancellable *cancellable, GError **error) { gboolean ret = FALSE; gs_unref_ptrarray GPtrArray *ret_object_dirs = NULL; ret_object_dirs = g_ptr_array_new_with_free_func ((GDestroyNotify)g_object_unref); if (ostree_repo_get_mode (self) == OSTREE_REPO_MODE_ARCHIVE_Z2) { gs_unref_object GFile *cachedir = g_file_get_child (self->uncompressed_objects_dir, "objects"); if (!append_object_dirs_from (self, cachedir, ret_object_dirs, cancellable, error)) goto out; } if (!append_object_dirs_from (self, self->objects_dir, ret_object_dirs, cancellable, error)) goto out; ret = TRUE; ot_transfer_out_value (out_object_dirs, &ret_object_dirs); out: return ret; } typedef struct { dev_t dev; ino_t ino; } OstreeDevIno; static guint devino_hash (gconstpointer a) { OstreeDevIno *a_i = (gpointer)a; return (guint) (a_i->dev + a_i->ino); } static int devino_equal (gconstpointer a, gconstpointer b) { OstreeDevIno *a_i = (gpointer)a; OstreeDevIno *b_i = (gpointer)b; return a_i->dev == b_i->dev && a_i->ino == b_i->ino; } static gboolean scan_loose_devino (OstreeRepo *self, GHashTable *devino_cache, GCancellable *cancellable, GError **error) { gboolean ret = FALSE; guint i; OstreeRepoMode repo_mode; gs_unref_ptrarray GPtrArray *object_dirs = NULL; if (self->parent_repo) { if (!scan_loose_devino (self->parent_repo, devino_cache, cancellable, error)) goto out; } repo_mode = ostree_repo_get_mode (self); if (!get_loose_object_dirs (self, &object_dirs, cancellable, error)) goto out; for (i = 0; i < object_dirs->len; i++) { GFile *objdir = object_dirs->pdata[i]; gs_unref_object GFileEnumerator *enumerator = NULL; gs_unref_object GFileInfo *file_info = NULL; const char *dirname; enumerator = g_file_enumerate_children (objdir, OSTREE_GIO_FAST_QUERYINFO, G_FILE_QUERY_INFO_NOFOLLOW_SYMLINKS, cancellable, error); if (!enumerator) goto out; dirname = gs_file_get_basename_cached (objdir); while (TRUE) { const char *name; const char *dot; guint32 type; OstreeDevIno *key; GString *checksum; gboolean skip; if (!gs_file_enumerator_iterate (enumerator, &file_info, NULL, NULL, error)) goto out; if (file_info == NULL) break; name = g_file_info_get_attribute_byte_string (file_info, "standard::name"); type = g_file_info_get_attribute_uint32 (file_info, "standard::type"); if (type == G_FILE_TYPE_DIRECTORY) continue; switch (repo_mode) { case OSTREE_REPO_MODE_ARCHIVE_Z2: case OSTREE_REPO_MODE_BARE: skip = !g_str_has_suffix (name, ".file"); break; default: g_assert_not_reached (); } if (skip) continue; dot = strrchr (name, '.'); g_assert (dot); if ((dot - name) != 62) continue; checksum = g_string_new (dirname); g_string_append_len (checksum, name, 62); key = g_new (OstreeDevIno, 1); key->dev = g_file_info_get_attribute_uint32 (file_info, "unix::device"); key->ino = g_file_info_get_attribute_uint64 (file_info, "unix::inode"); g_hash_table_replace (devino_cache, key, g_string_free (checksum, FALSE)); } } ret = TRUE; out: return ret; } static const char * devino_cache_lookup (OstreeRepo *self, GFileInfo *finfo) { OstreeDevIno dev_ino; if (!self->loose_object_devino_hash) return NULL; dev_ino.dev = g_file_info_get_attribute_uint32 (finfo, "unix::device"); dev_ino.ino = g_file_info_get_attribute_uint64 (finfo, "unix::inode"); return g_hash_table_lookup (self->loose_object_devino_hash, &dev_ino); } gboolean ostree_repo_prepare_transaction (OstreeRepo *self, gboolean enable_commit_hardlink_scan, gboolean *out_transaction_resume, GCancellable *cancellable, GError **error) { gboolean ret = FALSE; gboolean ret_transaction_resume = FALSE; gs_free char *transaction_str = NULL; g_return_val_if_fail (self->in_transaction == FALSE, FALSE); if (self->transaction_lock_path == NULL) self->transaction_lock_path = g_file_resolve_relative_path (self->repodir, "transaction"); if (g_file_query_file_type (self->transaction_lock_path, G_FILE_QUERY_INFO_NOFOLLOW_SYMLINKS, NULL) == G_FILE_TYPE_SYMBOLIC_LINK) ret_transaction_resume = TRUE; else ret_transaction_resume = FALSE; self->txn_metadata_objects_total = self->txn_metadata_objects_written = self->txn_content_objects_total = self->txn_content_objects_written = self->txn_content_bytes_written = 0; self->in_transaction = TRUE; if (ret_transaction_resume) { if (!ot_gfile_ensure_unlinked (self->transaction_lock_path, cancellable, error)) goto out; } transaction_str = g_strdup_printf ("pid=%llu", (unsigned long long) getpid ()); if (!g_file_make_symbolic_link (self->transaction_lock_path, transaction_str, cancellable, error)) goto out; if (enable_commit_hardlink_scan) { if (!self->loose_object_devino_hash) self->loose_object_devino_hash = g_hash_table_new_full (devino_hash, devino_equal, g_free, g_free); g_hash_table_remove_all (self->loose_object_devino_hash); if (!scan_loose_devino (self, self->loose_object_devino_hash, cancellable, error)) goto out; } ret = TRUE; if (out_transaction_resume) *out_transaction_resume = ret_transaction_resume; out: return ret; } static gboolean cleanup_tmpdir (OstreeRepo *self, GCancellable *cancellable, GError **error) { gboolean ret = FALSE; gs_unref_object GFileEnumerator *enumerator = NULL; enumerator = g_file_enumerate_children (self->tmp_dir, "standard::name", G_FILE_QUERY_INFO_NOFOLLOW_SYMLINKS, cancellable, error); if (!enumerator) goto out; while (TRUE) { GFileInfo *file_info; GFile *path; if (!gs_file_enumerator_iterate (enumerator, &file_info, &path, cancellable, error)) goto out; if (file_info == NULL) break; if (!gs_shutil_rm_rf (path, cancellable, error)) goto out; } ret = TRUE; out: return ret; } gboolean ostree_repo_commit_transaction_with_stats (OstreeRepo *self, guint *out_metadata_objects_total, guint *out_metadata_objects_written, guint *out_content_objects_total, guint *out_content_objects_written, guint64 *out_content_bytes_written, GCancellable *cancellable, GError **error) { gboolean ret = FALSE; g_return_val_if_fail (self->in_transaction == TRUE, FALSE); if (!cleanup_tmpdir (self, cancellable, error)) goto out; if (!ot_gfile_ensure_unlinked (self->transaction_lock_path, cancellable, error)) goto out; if (self->loose_object_devino_hash) g_hash_table_remove_all (self->loose_object_devino_hash); self->in_transaction = FALSE; if (out_metadata_objects_total) *out_metadata_objects_total = self->txn_metadata_objects_total; if (out_metadata_objects_written) *out_metadata_objects_written = self->txn_metadata_objects_written; if (out_content_objects_total) *out_content_objects_total = self->txn_content_objects_total; if (out_content_objects_written) *out_content_objects_written = self->txn_content_objects_written; if (out_content_bytes_written) *out_content_bytes_written = self->txn_content_bytes_written; ret = TRUE; out: return ret; } gboolean ostree_repo_commit_transaction (OstreeRepo *self, GCancellable *cancellable, GError **error) { return ostree_repo_commit_transaction_with_stats (self, NULL, NULL, NULL, NULL, NULL, cancellable, error); } gboolean ostree_repo_abort_transaction (OstreeRepo *self, GCancellable *cancellable, GError **error) { gboolean ret = FALSE; if (!cleanup_tmpdir (self, cancellable, error)) goto out; self->in_transaction = FALSE; if (self->loose_object_devino_hash) g_hash_table_remove_all (self->loose_object_devino_hash); ret = TRUE; out: return ret; } /** * ostree_repo_stage_metadata: * @self: Repo * @objtype: Object type * @expected_checksum: (allow-none): If provided, validate content against this checksum * @object: Metadata * @out_csum: (out) (array fixed-size=32) (allow-none): Binary checksum * @cancellable: Cancellable * @error: Error * * Store the metadata object @variant. Return the checksum * as @out_csum. * * If @expected_checksum is not %NULL, verify it against the * computed checksum. */ gboolean ostree_repo_stage_metadata (OstreeRepo *self, OstreeObjectType objtype, const char *expected_checksum, GVariant *object, guchar **out_csum, GCancellable *cancellable, GError **error) { gs_unref_object GInputStream *input = NULL; gs_unref_variant GVariant *normalized = NULL; normalized = g_variant_get_normal_form (object); input = ot_variant_read (normalized); return stage_object (self, objtype, expected_checksum, input, 0, out_csum, cancellable, error); } /** * ostree_repo_stage_metadata_trusted: * @self: Repo * @objtype: Object type * @checksum: Store object with this ASCII SHA256 checksum * @variant: Metadata object * @cancellable: Cancellable * @error: Error * * Store the metadata object @variant; the provided @checksum is * trusted. */ gboolean ostree_repo_stage_metadata_trusted (OstreeRepo *self, OstreeObjectType type, const char *checksum, GVariant *variant, GCancellable *cancellable, GError **error) { gs_unref_object GInputStream *input = NULL; gs_unref_variant GVariant *normalized = NULL; normalized = g_variant_get_normal_form (variant); input = ot_variant_read (normalized); return stage_object (self, type, checksum, input, 0, NULL, cancellable, error); } typedef struct { OstreeRepo *repo; OstreeObjectType objtype; char *expected_checksum; GVariant *object; GCancellable *cancellable; GSimpleAsyncResult *result; guchar *result_csum; } StageMetadataAsyncData; static void stage_metadata_async_data_free (gpointer user_data) { StageMetadataAsyncData *data = user_data; g_clear_object (&data->repo); g_clear_object (&data->cancellable); g_variant_unref (data->object); g_free (data->result_csum); g_free (data->expected_checksum); g_free (data); } static void stage_metadata_thread (GSimpleAsyncResult *res, GObject *object, GCancellable *cancellable) { GError *error = NULL; StageMetadataAsyncData *data; data = g_simple_async_result_get_op_res_gpointer (res); if (!ostree_repo_stage_metadata (data->repo, data->objtype, data->expected_checksum, data->object, &data->result_csum, cancellable, &error)) g_simple_async_result_take_error (res, error); } /** * ostree_repo_stage_metadata_async: * @self: Repo * @objtype: Object type * @expected_checksum: (allow-none): If provided, validate content against this checksum * @object: Metadata * @cancellable: Cancellable * @callback: Invoked when metadata is staged * @user_data: Data for @callback * * Asynchronously store the metadata object @variant. If provided, * the checksum @expected_checksum will be verified. */ void ostree_repo_stage_metadata_async (OstreeRepo *self, OstreeObjectType objtype, const char *expected_checksum, GVariant *object, GCancellable *cancellable, GAsyncReadyCallback callback, gpointer user_data) { StageMetadataAsyncData *asyncdata; asyncdata = g_new0 (StageMetadataAsyncData, 1); asyncdata->repo = g_object_ref (self); asyncdata->objtype = objtype; asyncdata->expected_checksum = g_strdup (expected_checksum); asyncdata->object = g_variant_ref (object); asyncdata->cancellable = cancellable ? g_object_ref (cancellable) : NULL; asyncdata->result = g_simple_async_result_new ((GObject*) self, callback, user_data, ostree_repo_stage_metadata_async); g_simple_async_result_set_op_res_gpointer (asyncdata->result, asyncdata, stage_metadata_async_data_free); g_simple_async_result_run_in_thread (asyncdata->result, stage_metadata_thread, G_PRIORITY_DEFAULT, cancellable); g_object_unref (asyncdata->result); } gboolean ostree_repo_stage_metadata_finish (OstreeRepo *self, GAsyncResult *result, guchar **out_csum, GError **error) { GSimpleAsyncResult *simple = G_SIMPLE_ASYNC_RESULT (result); StageMetadataAsyncData *data; g_warn_if_fail (g_simple_async_result_get_source_tag (simple) == ostree_repo_stage_metadata_async); if (g_simple_async_result_propagate_error (simple, error)) return FALSE; data = g_simple_async_result_get_op_res_gpointer (simple); /* Transfer ownership */ *out_csum = data->result_csum; data->result_csum = NULL; return TRUE; } gboolean _ostree_repo_stage_directory_meta (OstreeRepo *self, GFileInfo *file_info, GVariant *xattrs, guchar **out_csum, GCancellable *cancellable, GError **error) { gs_unref_variant GVariant *dirmeta = NULL; if (g_cancellable_set_error_if_cancelled (cancellable, error)) return FALSE; dirmeta = ostree_create_directory_metadata (file_info, xattrs); return ostree_repo_stage_metadata (self, OSTREE_OBJECT_TYPE_DIR_META, NULL, dirmeta, out_csum, cancellable, error); } GFile * _ostree_repo_get_object_path (OstreeRepo *self, const char *checksum, OstreeObjectType type) { char *relpath; GFile *ret; gboolean compressed; compressed = (type == OSTREE_OBJECT_TYPE_FILE && ostree_repo_get_mode (self) == OSTREE_REPO_MODE_ARCHIVE_Z2); relpath = ostree_get_relative_object_path (checksum, type, compressed); ret = g_file_resolve_relative_path (self->repodir, relpath); g_free (relpath); return ret; } GFile * _ostree_repo_get_uncompressed_object_cache_path (OstreeRepo *self, const char *checksum) { char *relpath; GFile *ret; relpath = ostree_get_relative_object_path (checksum, OSTREE_OBJECT_TYPE_FILE, FALSE); ret = g_file_resolve_relative_path (self->uncompressed_objects_dir, relpath); g_free (relpath); return ret; } /** * ostree_repo_stage_content_trusted: * @self: Repo * @checksum: Store content using this ASCII SHA256 checksum * @object_input: Content stream * @length: Length of @object_input * @cancellable: Cancellable * @error: Data for @callback * * Store the content object streamed as @object_input, with total * length @length. The given @checksum will be treated as trusted. * * This function should be used when importing file objects from local * disk, for example. */ gboolean ostree_repo_stage_content_trusted (OstreeRepo *self, const char *checksum, GInputStream *object_input, guint64 length, GCancellable *cancellable, GError **error) { return stage_object (self, OSTREE_OBJECT_TYPE_FILE, checksum, object_input, length, NULL, cancellable, error); } /** * ostree_repo_stage_content: * @self: Repo * @expected_checksum: (allow-none): If provided, validate content against this checksum * @object_input: Content object stream * @length: Length of @object_input * @out_csum: (out) (array fixed-size=32) (allow-none): Binary checksum * @cancellable: Cancellable * @error: Error * * Store the content object streamed as @object_input, * with total length @length. The actual checksum will * be returned as @out_csum. */ gboolean ostree_repo_stage_content (OstreeRepo *self, const char *expected_checksum, GInputStream *object_input, guint64 length, guchar **out_csum, GCancellable *cancellable, GError **error) { return stage_object (self, OSTREE_OBJECT_TYPE_FILE, expected_checksum, object_input, length, out_csum, cancellable, error); } typedef struct { OstreeRepo *repo; char *expected_checksum; GInputStream *object; guint64 file_object_length; GCancellable *cancellable; GSimpleAsyncResult *result; guchar *result_csum; } StageContentAsyncData; static void stage_content_async_data_free (gpointer user_data) { StageContentAsyncData *data = user_data; g_clear_object (&data->repo); g_clear_object (&data->cancellable); g_clear_object (&data->object); g_free (data->result_csum); g_free (data->expected_checksum); g_free (data); } static void stage_content_thread (GSimpleAsyncResult *res, GObject *object, GCancellable *cancellable) { GError *error = NULL; StageContentAsyncData *data; data = g_simple_async_result_get_op_res_gpointer (res); if (!ostree_repo_stage_content (data->repo, data->expected_checksum, data->object, data->file_object_length, &data->result_csum, cancellable, &error)) g_simple_async_result_take_error (res, error); } /** * ostree_repo_stage_content_async: * @self: Repo * @expected_checksum: (allow-none): If provided, validate content against this checksum * @object: Input * @length: Length of @object * @cancellable: Cancellable * @callback: Invoked when content is staged * @user_data: User data for @callback * * Asynchronously store the content object @object. If provided, the * checksum @expected_checksum will be verified. */ void ostree_repo_stage_content_async (OstreeRepo *self, const char *expected_checksum, GInputStream *object, guint64 length, GCancellable *cancellable, GAsyncReadyCallback callback, gpointer user_data) { StageContentAsyncData *asyncdata; asyncdata = g_new0 (StageContentAsyncData, 1); asyncdata->repo = g_object_ref (self); asyncdata->expected_checksum = g_strdup (expected_checksum); asyncdata->object = g_object_ref (object); asyncdata->file_object_length = length; asyncdata->cancellable = cancellable ? g_object_ref (cancellable) : NULL; asyncdata->result = g_simple_async_result_new ((GObject*) self, callback, user_data, ostree_repo_stage_content_async); g_simple_async_result_set_op_res_gpointer (asyncdata->result, asyncdata, stage_content_async_data_free); g_simple_async_result_run_in_thread (asyncdata->result, stage_content_thread, G_PRIORITY_DEFAULT, cancellable); g_object_unref (asyncdata->result); } /** * ostree_repo_stage_content_finish: * @self: a #OstreeRepo * @result: a #GAsyncResult * @out_csum: (out) (transfer full): A binary SHA256 checksum of the content object * @error: a #GError * * Completes an invocation of ostree_repo_stage_content_async(). */ gboolean ostree_repo_stage_content_finish (OstreeRepo *self, GAsyncResult *result, guchar **out_csum, GError **error) { GSimpleAsyncResult *simple = G_SIMPLE_ASYNC_RESULT (result); StageContentAsyncData *data; g_warn_if_fail (g_simple_async_result_get_source_tag (simple) == ostree_repo_stage_content_async); if (g_simple_async_result_propagate_error (simple, error)) return FALSE; data = g_simple_async_result_get_op_res_gpointer (simple); ot_transfer_out_value (out_csum, &data->result_csum); return TRUE; } static GVariant * create_empty_gvariant_dict (void) { GVariantBuilder builder; g_variant_builder_init (&builder, G_VARIANT_TYPE("a{sv}")); return g_variant_builder_end (&builder); } /** * ostree_repo_stage_commit: * @self: Repo * @branch: Name of ref * @parent: (allow-none): ASCII SHA256 checksum for parent, or %NULL for none * @subject: Subject * @body: Body * @root_contents_checksum: ASCII SHA256 checksum for %OSTREE_OBJECT_TYPE_DIR_TREE * @root_metadata_checksum: ASCII SHA256 checksum for %OSTREE_OBJECT_TYPE_DIR_META * @out_commit: (out): Resulting ASCII SHA256 checksum for commit * @cancellable: Cancellable * @error: Error * * Write a commit metadata object, referencing @root_contents_checksum * and @root_metadata_checksum. */ gboolean ostree_repo_stage_commit (OstreeRepo *self, const char *branch, const char *parent, const char *subject, const char *body, const char *root_contents_checksum, const char *root_metadata_checksum, char **out_commit, GCancellable *cancellable, GError **error) { gboolean ret = FALSE; gs_free char *ret_commit = NULL; gs_unref_variant GVariant *commit = NULL; gs_free guchar *commit_csum = NULL; GDateTime *now = NULL; g_return_val_if_fail (branch != NULL, FALSE); g_return_val_if_fail (subject != NULL, FALSE); g_return_val_if_fail (root_contents_checksum != NULL, FALSE); g_return_val_if_fail (root_metadata_checksum != NULL, FALSE); now = g_date_time_new_now_utc (); commit = g_variant_new ("(@a{sv}@ay@a(say)sst@ay@ay)", create_empty_gvariant_dict (), parent ? ostree_checksum_to_bytes_v (parent) : ot_gvariant_new_bytearray (NULL, 0), g_variant_new_array (G_VARIANT_TYPE ("(say)"), NULL, 0), subject, body ? body : "", GUINT64_TO_BE (g_date_time_to_unix (now)), ostree_checksum_to_bytes_v (root_contents_checksum), ostree_checksum_to_bytes_v (root_metadata_checksum)); g_variant_ref_sink (commit); if (!ostree_repo_stage_metadata (self, OSTREE_OBJECT_TYPE_COMMIT, NULL, commit, &commit_csum, cancellable, error)) goto out; ret_commit = ostree_checksum_from_bytes (commit_csum); ret = TRUE; ot_transfer_out_value(out_commit, &ret_commit); out: if (now) g_date_time_unref (now); return ret; } static GVariant * create_tree_variant_from_hashes (GHashTable *file_checksums, GHashTable *dir_contents_checksums, GHashTable *dir_metadata_checksums) { GHashTableIter hash_iter; gpointer key, value; GVariantBuilder files_builder; GVariantBuilder dirs_builder; GSList *sorted_filenames = NULL; GSList *iter; GVariant *serialized_tree; g_variant_builder_init (&files_builder, G_VARIANT_TYPE ("a(say)")); g_variant_builder_init (&dirs_builder, G_VARIANT_TYPE ("a(sayay)")); g_hash_table_iter_init (&hash_iter, file_checksums); while (g_hash_table_iter_next (&hash_iter, &key, &value)) { const char *name = key; sorted_filenames = g_slist_prepend (sorted_filenames, (char*)name); } sorted_filenames = g_slist_sort (sorted_filenames, (GCompareFunc)strcmp); for (iter = sorted_filenames; iter; iter = iter->next) { const char *name = iter->data; const char *value; value = g_hash_table_lookup (file_checksums, name); g_variant_builder_add (&files_builder, "(s@ay)", name, ostree_checksum_to_bytes_v (value)); } g_slist_free (sorted_filenames); sorted_filenames = NULL; g_hash_table_iter_init (&hash_iter, dir_metadata_checksums); while (g_hash_table_iter_next (&hash_iter, &key, &value)) { const char *name = key; sorted_filenames = g_slist_prepend (sorted_filenames, (char*)name); } sorted_filenames = g_slist_sort (sorted_filenames, (GCompareFunc)strcmp); for (iter = sorted_filenames; iter; iter = iter->next) { const char *name = iter->data; const char *content_checksum; const char *meta_checksum; content_checksum = g_hash_table_lookup (dir_contents_checksums, name); meta_checksum = g_hash_table_lookup (dir_metadata_checksums, name); g_variant_builder_add (&dirs_builder, "(s@ay@ay)", name, ostree_checksum_to_bytes_v (content_checksum), ostree_checksum_to_bytes_v (meta_checksum)); } g_slist_free (sorted_filenames); sorted_filenames = NULL; serialized_tree = g_variant_new ("(@a(say)@a(sayay))", g_variant_builder_end (&files_builder), g_variant_builder_end (&dirs_builder)); g_variant_ref_sink (serialized_tree); return serialized_tree; } struct OstreeRepoCommitModifier { volatile gint refcount; OstreeRepoCommitModifierFlags flags; OstreeRepoCommitFilter filter; gpointer user_data; }; static OstreeRepoCommitFilterResult apply_commit_filter (OstreeRepo *self, OstreeRepoCommitModifier *modifier, GPtrArray *path, GFileInfo *file_info, GFileInfo **out_modified_info) { GString *path_buf; guint i; OstreeRepoCommitFilterResult result; GFileInfo *modified_info; if (modifier == NULL || modifier->filter == NULL) { *out_modified_info = g_object_ref (file_info); return OSTREE_REPO_COMMIT_FILTER_ALLOW; } path_buf = g_string_new (""); if (path->len == 0) g_string_append_c (path_buf, '/'); else { for (i = 0; i < path->len; i++) { const char *elt = path->pdata[i]; g_string_append_c (path_buf, '/'); g_string_append (path_buf, elt); } } modified_info = g_file_info_dup (file_info); result = modifier->filter (self, path_buf->str, modified_info, modifier->user_data); *out_modified_info = modified_info; g_string_free (path_buf, TRUE); return result; } static gboolean stage_directory_to_mtree_internal (OstreeRepo *self, GFile *dir, OstreeMutableTree *mtree, OstreeRepoCommitModifier *modifier, GPtrArray *path, GCancellable *cancellable, GError **error) { gboolean ret = FALSE; gboolean repo_dir_was_empty = FALSE; OstreeRepoCommitFilterResult filter_result; gs_unref_object OstreeRepoFile *repo_dir = NULL; gs_unref_object GFileEnumerator *dir_enum = NULL; gs_unref_object GFileInfo *child_info = NULL; g_debug ("Examining: %s", gs_file_get_path_cached (dir)); /* We can only reuse checksums directly if there's no modifier */ if (OSTREE_IS_REPO_FILE (dir) && modifier == NULL) repo_dir = (OstreeRepoFile*)g_object_ref (dir); if (repo_dir) { if (!ostree_repo_file_ensure_resolved (repo_dir, error)) goto out; ostree_mutable_tree_set_metadata_checksum (mtree, ostree_repo_file_get_checksum (repo_dir)); repo_dir_was_empty = g_hash_table_size (ostree_mutable_tree_get_files (mtree)) == 0 && g_hash_table_size (ostree_mutable_tree_get_subdirs (mtree)) == 0; filter_result = OSTREE_REPO_COMMIT_FILTER_ALLOW; } else { gs_unref_object GFileInfo *modified_info = NULL; gs_unref_variant GVariant *xattrs = NULL; gs_free guchar *child_file_csum = NULL; gs_free char *tmp_checksum = NULL; child_info = g_file_query_info (dir, OSTREE_GIO_FAST_QUERYINFO, G_FILE_QUERY_INFO_NOFOLLOW_SYMLINKS, cancellable, error); if (!child_info) goto out; filter_result = apply_commit_filter (self, modifier, path, child_info, &modified_info); if (filter_result == OSTREE_REPO_COMMIT_FILTER_ALLOW) { g_debug ("Adding: %s", gs_file_get_path_cached (dir)); if (!(modifier && (modifier->flags & OSTREE_REPO_COMMIT_MODIFIER_FLAGS_SKIP_XATTRS) > 0)) { if (!ostree_get_xattrs_for_file (dir, &xattrs, cancellable, error)) goto out; } if (!_ostree_repo_stage_directory_meta (self, modified_info, xattrs, &child_file_csum, cancellable, error)) goto out; g_free (tmp_checksum); tmp_checksum = ostree_checksum_from_bytes (child_file_csum); ostree_mutable_tree_set_metadata_checksum (mtree, tmp_checksum); } g_clear_object (&child_info); } if (filter_result == OSTREE_REPO_COMMIT_FILTER_ALLOW) { dir_enum = g_file_enumerate_children ((GFile*)dir, OSTREE_GIO_FAST_QUERYINFO, G_FILE_QUERY_INFO_NOFOLLOW_SYMLINKS, cancellable, error); if (!dir_enum) goto out; while (TRUE) { GFileInfo *child_info; gs_unref_object GFile *child = NULL; gs_unref_object GFileInfo *modified_info = NULL; gs_unref_object OstreeMutableTree *child_mtree = NULL; const char *name; if (!gs_file_enumerator_iterate (dir_enum, &child_info, NULL, cancellable, error)) goto out; if (child_info == NULL) break; name = g_file_info_get_name (child_info); g_ptr_array_add (path, (char*)name); filter_result = apply_commit_filter (self, modifier, path, child_info, &modified_info); if (filter_result == OSTREE_REPO_COMMIT_FILTER_ALLOW) { child = g_file_get_child (dir, name); if (g_file_info_get_file_type (child_info) == G_FILE_TYPE_DIRECTORY) { if (!ostree_mutable_tree_ensure_dir (mtree, name, &child_mtree, error)) goto out; if (!stage_directory_to_mtree_internal (self, child, child_mtree, modifier, path, cancellable, error)) goto out; } else if (repo_dir) { g_debug ("Adding: %s", gs_file_get_path_cached (child)); if (!ostree_mutable_tree_replace_file (mtree, name, ostree_repo_file_get_checksum ((OstreeRepoFile*) child), error)) goto out; } else { guint64 file_obj_length; const char *loose_checksum; gs_unref_object GInputStream *file_input = NULL; gs_unref_variant GVariant *xattrs = NULL; gs_unref_object GInputStream *file_object_input = NULL; gs_free guchar *child_file_csum = NULL; gs_free char *tmp_checksum = NULL; g_debug ("Adding: %s", gs_file_get_path_cached (child)); loose_checksum = devino_cache_lookup (self, child_info); if (loose_checksum) { if (!ostree_mutable_tree_replace_file (mtree, name, loose_checksum, error)) goto out; } else { if (g_file_info_get_file_type (modified_info) == G_FILE_TYPE_REGULAR) { file_input = (GInputStream*)g_file_read (child, cancellable, error); if (!file_input) goto out; } if (!(modifier && (modifier->flags & OSTREE_REPO_COMMIT_MODIFIER_FLAGS_SKIP_XATTRS) > 0)) { g_clear_pointer (&xattrs, (GDestroyNotify) g_variant_unref); if (!ostree_get_xattrs_for_file (child, &xattrs, cancellable, error)) goto out; } if (!ostree_raw_file_to_content_stream (file_input, modified_info, xattrs, &file_object_input, &file_obj_length, cancellable, error)) goto out; if (!ostree_repo_stage_content (self, NULL, file_object_input, file_obj_length, &child_file_csum, cancellable, error)) goto out; g_free (tmp_checksum); tmp_checksum = ostree_checksum_from_bytes (child_file_csum); if (!ostree_mutable_tree_replace_file (mtree, name, tmp_checksum, error)) goto out; } } g_ptr_array_remove_index (path, path->len - 1); } } } if (repo_dir && repo_dir_was_empty) ostree_mutable_tree_set_contents_checksum (mtree, ostree_repo_file_tree_get_content_checksum (repo_dir)); ret = TRUE; out: return ret; } /** * ostree_repo_stage_directory_to_mtree: * @self: Repo * @dir: Path to a directory * @mtree: Overlay directory contents into this tree * @modifier: (allow-none): Optional modifier * @cancellable: Cancellable * @error: Error * * Store objects for @dir and all children into the repository @self, * overlaying the resulting filesystem hierarchy into @mtree. */ gboolean ostree_repo_stage_directory_to_mtree (OstreeRepo *self, GFile *dir, OstreeMutableTree *mtree, OstreeRepoCommitModifier *modifier, GCancellable *cancellable, GError **error) { gboolean ret = FALSE; GPtrArray *path = NULL; path = g_ptr_array_new (); if (!stage_directory_to_mtree_internal (self, dir, mtree, modifier, path, cancellable, error)) goto out; ret = TRUE; out: if (path) g_ptr_array_free (path, TRUE); return ret; } /** * ostree_repo_stage_mtree: * @self: Repo * @mtree: Mutable tree * @out_contents_checksum: (out): Return location for ASCII checksum * @cancellable: Cancellable * @error: Error * * Write all metadata objects for @mtree to repo; the resulting * @out_contents_checksum contains the checksum for the * %OSTREE_OBJECT_TYPE_DIR_TREE object. */ gboolean ostree_repo_stage_mtree (OstreeRepo *self, OstreeMutableTree *mtree, char **out_contents_checksum, GCancellable *cancellable, GError **error) { gboolean ret = FALSE; GHashTableIter hash_iter; gpointer key, value; const char *existing_checksum; gs_free char *ret_contents_checksum = NULL; gs_unref_hashtable GHashTable *dir_metadata_checksums = NULL; gs_unref_hashtable GHashTable *dir_contents_checksums = NULL; gs_unref_variant GVariant *serialized_tree = NULL; gs_free guchar *contents_csum = NULL; existing_checksum = ostree_mutable_tree_get_contents_checksum (mtree); if (existing_checksum) { ret_contents_checksum = g_strdup (existing_checksum); } else { dir_contents_checksums = g_hash_table_new_full (g_str_hash, g_str_equal, (GDestroyNotify)g_free, (GDestroyNotify)g_free); dir_metadata_checksums = g_hash_table_new_full (g_str_hash, g_str_equal, (GDestroyNotify)g_free, (GDestroyNotify)g_free); g_hash_table_iter_init (&hash_iter, ostree_mutable_tree_get_subdirs (mtree)); while (g_hash_table_iter_next (&hash_iter, &key, &value)) { const char *name = key; const char *metadata_checksum; OstreeMutableTree *child_dir = value; char *child_dir_contents_checksum; if (!ostree_repo_stage_mtree (self, child_dir, &child_dir_contents_checksum, cancellable, error)) goto out; g_assert (child_dir_contents_checksum); g_hash_table_replace (dir_contents_checksums, g_strdup (name), child_dir_contents_checksum); /* Transfer ownership */ metadata_checksum = ostree_mutable_tree_get_metadata_checksum (child_dir); g_assert (metadata_checksum); g_hash_table_replace (dir_metadata_checksums, g_strdup (name), g_strdup (metadata_checksum)); } serialized_tree = create_tree_variant_from_hashes (ostree_mutable_tree_get_files (mtree), dir_contents_checksums, dir_metadata_checksums); if (!ostree_repo_stage_metadata (self, OSTREE_OBJECT_TYPE_DIR_TREE, NULL, serialized_tree, &contents_csum, cancellable, error)) goto out; ret_contents_checksum = ostree_checksum_from_bytes (contents_csum); } ret = TRUE; ot_transfer_out_value(out_contents_checksum, &ret_contents_checksum); out: return ret; } /** * ostree_repo_commit_modifier_new: * @flags: Control options for filter * @commit_filter: (allow-none): Function that can inspect individual files * @user_data: (allow-none): User data * * Returns: (transfer full): A new commit modifier. */ OstreeRepoCommitModifier * ostree_repo_commit_modifier_new (OstreeRepoCommitModifierFlags flags, OstreeRepoCommitFilter commit_filter, gpointer user_data) { OstreeRepoCommitModifier *modifier = g_new0 (OstreeRepoCommitModifier, 1); modifier->refcount = 1; modifier->flags = flags; modifier->filter = commit_filter; modifier->user_data = user_data; return modifier; } OstreeRepoCommitModifier * ostree_repo_commit_modifier_ref (OstreeRepoCommitModifier *modifier) { g_atomic_int_inc (&modifier->refcount); return modifier; } void ostree_repo_commit_modifier_unref (OstreeRepoCommitModifier *modifier) { if (!modifier) return; if (!g_atomic_int_dec_and_test (&modifier->refcount)) return; g_free (modifier); return; } G_DEFINE_BOXED_TYPE(OstreeRepoCommitModifier, ostree_repo_commit_modifier, ostree_repo_commit_modifier_ref, ostree_repo_commit_modifier_unref); static gboolean list_loose_object_dir (OstreeRepo *self, GFile *dir, GHashTable *inout_objects, GCancellable *cancellable, GError **error) { gboolean ret = FALSE; const char *dirname = NULL; const char *dot = NULL; gs_unref_object GFileEnumerator *enumerator = NULL; GString *checksum = NULL; dirname = gs_file_get_basename_cached (dir); /* We're only querying name */ enumerator = g_file_enumerate_children (dir, "standard::name,standard::type", G_FILE_QUERY_INFO_NOFOLLOW_SYMLINKS, cancellable, error); if (!enumerator) goto out; while (TRUE) { GFileInfo *file_info; const char *name; guint32 type; OstreeObjectType objtype; if (!gs_file_enumerator_iterate (enumerator, &file_info, NULL, NULL, error)) goto out; if (file_info == NULL) break; type = g_file_info_get_attribute_uint32 (file_info, "standard::type"); if (type == G_FILE_TYPE_DIRECTORY) continue; name = g_file_info_get_attribute_byte_string (file_info, "standard::name"); if (g_str_has_suffix (name, ".file")) objtype = OSTREE_OBJECT_TYPE_FILE; else if (g_str_has_suffix (name, ".dirtree")) objtype = OSTREE_OBJECT_TYPE_DIR_TREE; else if (g_str_has_suffix (name, ".dirmeta")) objtype = OSTREE_OBJECT_TYPE_DIR_META; else if (g_str_has_suffix (name, ".commit")) objtype = OSTREE_OBJECT_TYPE_COMMIT; else continue; dot = strrchr (name, '.'); g_assert (dot); if ((dot - name) == 62) { GVariant *key, *value; if (checksum) g_string_free (checksum, TRUE); checksum = g_string_new (dirname); g_string_append_len (checksum, name, 62); key = ostree_object_name_serialize (checksum->str, objtype); value = g_variant_new ("(b@as)", TRUE, g_variant_new_strv (NULL, 0)); /* transfer ownership */ g_hash_table_replace (inout_objects, key, g_variant_ref_sink (value)); } } ret = TRUE; out: if (checksum) g_string_free (checksum, TRUE); return ret; } static gboolean list_loose_objects (OstreeRepo *self, GHashTable *inout_objects, GCancellable *cancellable, GError **error) { gboolean ret = FALSE; guint i; gs_unref_ptrarray GPtrArray *object_dirs = NULL; if (!get_loose_object_dirs (self, &object_dirs, cancellable, error)) goto out; for (i = 0; i < object_dirs->len; i++) { GFile *objdir = object_dirs->pdata[i]; if (!list_loose_object_dir (self, objdir, inout_objects, cancellable, error)) goto out; } ret = TRUE; out: return ret; } static gboolean load_metadata_internal (OstreeRepo *self, OstreeObjectType objtype, const char *sha256, gboolean error_if_not_found, GVariant **out_variant, GInputStream **out_stream, guint64 *out_size, GCancellable *cancellable, GError **error) { gboolean ret = FALSE; gs_unref_object GFile *object_path = NULL; gs_unref_object GInputStream *ret_stream = NULL; gs_unref_variant GVariant *ret_variant = NULL; g_return_val_if_fail (OSTREE_OBJECT_TYPE_IS_META (objtype), FALSE); if (!repo_find_object (self, objtype, sha256, &object_path, cancellable, error)) goto out; if (object_path != NULL) { if (out_variant) { if (!ot_util_variant_map (object_path, ostree_metadata_variant_type (objtype), TRUE, &ret_variant, error)) goto out; if (out_size) *out_size = g_variant_get_size (ret_variant); } else if (out_stream) { ret_stream = gs_file_read_noatime (object_path, cancellable, error); if (!ret_stream) goto out; if (out_size) { struct stat stbuf; if (!gs_stream_fstat ((GFileDescriptorBased*)ret_stream, &stbuf, cancellable, error)) goto out; *out_size = stbuf.st_size; } } } else if (self->parent_repo) { if (!ostree_repo_load_variant (self->parent_repo, objtype, sha256, &ret_variant, error)) goto out; } else if (error_if_not_found) { g_set_error (error, G_IO_ERROR, G_IO_ERROR_FAILED, "No such metadata object %s.%s", sha256, ostree_object_type_to_string (objtype)); goto out; } ret = TRUE; ot_transfer_out_value (out_variant, &ret_variant); ot_transfer_out_value (out_stream, &ret_stream); out: return ret; } /** * ostree_repo_load_file: * @self: Repo * @checksum: ASCII SHA256 checksum * @out_input: (out) (allow-none): File content * @out_file_info: (out) (allow-none): File information * @out_xattrs: (out) (allow-none): Extended attributes * @cancellable: Cancellable * @error: Error * * Load content object, decomposing it into three parts: the actual * content (for regular files), the metadata, and extended attributes. */ gboolean ostree_repo_load_file (OstreeRepo *self, const char *checksum, GInputStream **out_input, GFileInfo **out_file_info, GVariant **out_xattrs, GCancellable *cancellable, GError **error) { gboolean ret = FALSE; OstreeRepoMode repo_mode; gs_unref_object GFile *loose_path = NULL; gs_unref_object GInputStream *ret_input = NULL; gs_unref_object GFileInfo *ret_file_info = NULL; gs_unref_variant GVariant *ret_xattrs = NULL; if (!repo_find_object (self, OSTREE_OBJECT_TYPE_FILE, checksum, &loose_path, cancellable, error)) goto out; repo_mode = ostree_repo_get_mode (self); if (loose_path) { switch (repo_mode) { case OSTREE_REPO_MODE_ARCHIVE_Z2: { if (!ostree_content_file_parse (TRUE, loose_path, TRUE, out_input ? &ret_input : NULL, &ret_file_info, &ret_xattrs, cancellable, error)) goto out; } break; case OSTREE_REPO_MODE_BARE: { ret_file_info = g_file_query_info (loose_path, OSTREE_GIO_FAST_QUERYINFO, G_FILE_QUERY_INFO_NOFOLLOW_SYMLINKS, cancellable, error); if (!ret_file_info) goto out; if (out_xattrs) { if (!ostree_get_xattrs_for_file (loose_path, &ret_xattrs, cancellable, error)) goto out; } if (out_input && g_file_info_get_file_type (ret_file_info) == G_FILE_TYPE_REGULAR) { ret_input = (GInputStream*) gs_file_read_noatime (loose_path, cancellable, error); if (!ret_input) { g_prefix_error (error, "Error opening loose file object %s: ", gs_file_get_path_cached (loose_path)); goto out; } } } break; } } else if (self->parent_repo) { if (!ostree_repo_load_file (self->parent_repo, checksum, out_input ? &ret_input : NULL, out_file_info ? &ret_file_info : NULL, out_xattrs ? &ret_xattrs : NULL, cancellable, error)) goto out; } else { g_set_error (error, G_IO_ERROR, G_IO_ERROR_NOT_FOUND, "Couldn't find file object '%s'", checksum); goto out; } ret = TRUE; ot_transfer_out_value (out_input, &ret_input); ot_transfer_out_value (out_file_info, &ret_file_info); ot_transfer_out_value (out_xattrs, &ret_xattrs); out: return ret; } /** * ostree_repo_load_object_stream: * @self: Repo * @objtype: Object type * @checksum: ASCII SHA256 checksum * @out_input: (out): Stream for object * @out_size: (out): Length of @out_input * @cancellable: Cancellable * @error: Error * * Load object as a stream; useful when copying objects between * repositories. */ gboolean ostree_repo_load_object_stream (OstreeRepo *self, OstreeObjectType objtype, const char *checksum, GInputStream **out_input, guint64 *out_size, GCancellable *cancellable, GError **error) { gboolean ret = FALSE; guint64 size; gs_unref_object GInputStream *ret_input = NULL; if (OSTREE_OBJECT_TYPE_IS_META (objtype)) { if (!load_metadata_internal (self, objtype, checksum, TRUE, NULL, &ret_input, &size, cancellable, error)) goto out; } else { gs_unref_object GInputStream *input = NULL; gs_unref_object GFileInfo *finfo = NULL; gs_unref_variant GVariant *xattrs = NULL; if (!ostree_repo_load_file (self, checksum, &input, &finfo, &xattrs, cancellable, error)) goto out; if (!ostree_raw_file_to_content_stream (input, finfo, xattrs, &ret_input, &size, cancellable, error)) goto out; } ret = TRUE; ot_transfer_out_value (out_input, &ret_input); *out_size = size; out: return ret; } static gboolean repo_find_object (OstreeRepo *self, OstreeObjectType objtype, const char *checksum, GFile **out_stored_path, GCancellable *cancellable, GError **error) { gboolean ret = FALSE; struct stat stbuf; gs_unref_object GFile *object_path = NULL; gs_unref_object GFile *ret_stored_path = NULL; object_path = _ostree_repo_get_object_path (self, checksum, objtype); if (lstat (gs_file_get_path_cached (object_path), &stbuf) == 0) { ret_stored_path = object_path; object_path = NULL; /* Transfer ownership */ } else if (errno != ENOENT) { ot_util_set_error_from_errno (error, errno); goto out; } ret = TRUE; ot_transfer_out_value (out_stored_path, &ret_stored_path); out: return ret; } /** * ostree_repo_has_object: * @self: Repo * @objtype: Object type * @checksum: ASCII SHA256 checksum * @out_have_object: (out): %TRUE if repository contains object * @cancellable: Cancellable * @error: Error * * Set @out_have_object to %TRUE if @self contains the given object; * %FALSE otherwise. * * Returns: %FALSE if an unexpected error occurred, %TRUE otherwise */ gboolean ostree_repo_has_object (OstreeRepo *self, OstreeObjectType objtype, const char *checksum, gboolean *out_have_object, GCancellable *cancellable, GError **error) { gboolean ret = FALSE; gboolean ret_have_object; gs_unref_object GFile *loose_path = NULL; if (!repo_find_object (self, objtype, checksum, &loose_path, cancellable, error)) goto out; ret_have_object = (loose_path != NULL); if (!ret_have_object && self->parent_repo) { if (!ostree_repo_has_object (self->parent_repo, objtype, checksum, &ret_have_object, cancellable, error)) goto out; } ret = TRUE; if (out_have_object) *out_have_object = ret_have_object; out: return ret; } /** * ostree_repo_delete_object: * @self: Repo * @objtype: Object type * @sha256: Checksum * @cancellable: Cancellable * @error: Error * * Remove the object of type @objtype with checksum @sha256 * from the repository. An error of type %G_IO_ERROR_NOT_FOUND * is thrown if the object does not exist. */ gboolean ostree_repo_delete_object (OstreeRepo *self, OstreeObjectType objtype, const char *sha256, GCancellable *cancellable, GError **error) { gs_unref_object GFile *objpath = _ostree_repo_get_object_path (self, sha256, objtype); return gs_file_unlink (objpath, cancellable, error); } /** * ostree_repo_query_object_storage_size: * @self: Repo * @objtype: Object type * @sha256: Checksum * @out_size: (out): Size in bytes object occupies physically * @cancellable: Cancellable * @error: Error * * Return the size in bytes of object with checksum @sha256, after any * compression has been applied. */ gboolean ostree_repo_query_object_storage_size (OstreeRepo *self, OstreeObjectType objtype, const char *sha256, guint64 *out_size, GCancellable *cancellable, GError **error) { gboolean ret = FALSE; gs_unref_object GFile *objpath = _ostree_repo_get_object_path (self, sha256, objtype); gs_unref_object GFileInfo *finfo = g_file_query_info (objpath, OSTREE_GIO_FAST_QUERYINFO, G_FILE_QUERY_INFO_NOFOLLOW_SYMLINKS, cancellable, error); if (!finfo) goto out; *out_size = g_file_info_get_size (finfo); ret = TRUE; out: return ret; } /** * ostree_repo_load_variant_if_exists: * @self: Repo * @objtype: Object type * @sha256: ASCII checksum * @out_variant: (out) (transfer full): Metadata * @error: Error * * Attempt to load the metadata object @sha256 of type @objtype if it * exists, storing the result in @out_variant. If it doesn't exist, * %NULL is returned. */ gboolean ostree_repo_load_variant_if_exists (OstreeRepo *self, OstreeObjectType objtype, const char *sha256, GVariant **out_variant, GError **error) { return load_metadata_internal (self, objtype, sha256, FALSE, out_variant, NULL, NULL, NULL, error); } /** * ostree_repo_load_variant: * @self: Repo * @objtype: Expected object type * @sha256: Checksum string * @out_variant: (out): (transfer full): Metadata object * @error: Error * * Load the metadata object @sha256 of type @objtype, storing the * result in @out_variant. */ gboolean ostree_repo_load_variant (OstreeRepo *self, OstreeObjectType objtype, const char *sha256, GVariant **out_variant, GError **error) { return load_metadata_internal (self, objtype, sha256, TRUE, out_variant, NULL, NULL, NULL, error); } /** * ostree_repo_list_objects: * @self: Repo * @flags: Flags controlling enumeration * @out_objects: (out): Map of serialized object name to variant data * @cancellable: Cancellable * @error: Error * * This function synchronously enumerates all objects in the * repository, returning data in @out_objects. @out_objects * maps from keys returned by ostree_object_name_serialize() * to #GVariant values of type %OSTREE_REPO_LIST_OBJECTS_VARIANT_TYPE. * * Returns: %TRUE on success, %FALSE on error, and @error will be set */ gboolean ostree_repo_list_objects (OstreeRepo *self, OstreeRepoListObjectsFlags flags, GHashTable **out_objects, GCancellable *cancellable, GError **error) { gboolean ret = FALSE; gs_unref_hashtable GHashTable *ret_objects = NULL; g_return_val_if_fail (error == NULL || *error == NULL, FALSE); g_return_val_if_fail (self->inited, FALSE); ret_objects = g_hash_table_new_full (ostree_hash_object_name, g_variant_equal, (GDestroyNotify) g_variant_unref, (GDestroyNotify) g_variant_unref); if (flags & OSTREE_REPO_LIST_OBJECTS_ALL) flags |= (OSTREE_REPO_LIST_OBJECTS_LOOSE | OSTREE_REPO_LIST_OBJECTS_PACKED); if (flags & OSTREE_REPO_LIST_OBJECTS_LOOSE) { if (!list_loose_objects (self, ret_objects, cancellable, error)) goto out; if (self->parent_repo) { if (!list_loose_objects (self->parent_repo, ret_objects, cancellable, error)) goto out; } } if (flags & OSTREE_REPO_LIST_OBJECTS_PACKED) { /* Nothing for now... */ } ret = TRUE; ot_transfer_out_value (out_objects, &ret_objects); out: return ret; } /** * ostree_repo_read_commit: * @self: Repo * @rev: Revision (ref or ASCII checksum) * @out_root: (out): An #OstreeRepoFile corresponding to the root * @cancellable: Cancellable * @error: Error * * Load the content for @rev into @out_root. */ gboolean ostree_repo_read_commit (OstreeRepo *self, const char *rev, GFile **out_root, GCancellable *cancellable, GError **error) { gboolean ret = FALSE; gs_unref_object GFile *ret_root = NULL; gs_free char *resolved_rev = NULL; if (!ostree_repo_resolve_rev (self, rev, FALSE, &resolved_rev, error)) goto out; ret_root = ostree_repo_file_new_root (self, resolved_rev); if (!ostree_repo_file_ensure_resolved ((OstreeRepoFile*)ret_root, error)) goto out; ret = TRUE; ot_transfer_out_value(out_root, &ret_root); out: return ret; } #ifndef HAVE_LIBSOUP /** * ostree_repo_pull: * @self: Repo * @remote_name: Name of remote * @refs_to_fetch: (array zero-terminated=1) (element-type utf8) (allow-none): Optional list of refs; if %NULL, fetch all configured refs * @flags: Options controlling fetch behavior * @cancellable: Cancellable * @error: Error * * Connect to the remote repository, fetching the specified set of * refs @refs_to_fetch. For each ref that is changed, download the * commit, all metadata, and all content objects, storing them safely * on disk in @self. */ gboolean ostree_repo_pull (OstreeRepo *self, const char *remote_name, char **refs_to_fetch, OstreeRepoPullFlags flags, GCancellable *cancellable, GError **error) { g_set_error_literal (error, G_IO_ERROR, G_IO_ERROR_NOT_SUPPORTED, "This version of ostree was built without libsoup, and cannot fetch over HTTP"); return FALSE; } #endif