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ostree/src/libostree/ostree-repo-commit.c

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/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*-
*
* Copyright (C) 2011,2013 Colin Walters <walters@verbum.org>
*
* 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 <walters@verbum.org>
*/
#include "config.h"
#include <glib-unix.h>
#include <gio/gfiledescriptorbased.h>
#include "otutil.h"
#include "libgsystem.h"
#include "ostree-core-private.h"
#include "ostree-repo-private.h"
#include "ostree-repo-file-enumerator.h"
#include "ostree-checksum-input-stream.h"
#include "ostree-mutable-tree.h"
gboolean
_ostree_repo_ensure_loose_objdir_at (int dfd,
const char *loose_path,
GCancellable *cancellable,
GError **error)
{
char loose_prefix[3];
loose_prefix[0] = loose_path[0];
loose_prefix[1] = loose_path[1];
loose_prefix[2] = '\0';
if (mkdirat (dfd, loose_prefix, 0777) == -1)
{
int errsv = errno;
if (G_UNLIKELY (errsv != EEXIST))
{
ot_util_set_error_from_errno (error, errsv);
return FALSE;
}
}
return TRUE;
}
static gboolean
commit_loose_object_trusted (OstreeRepo *self,
OstreeObjectType objtype,
const char *loose_path,
GFile *temp_file,
const char *temp_filename,
gboolean is_symlink,
GFileInfo *file_info,
GVariant *xattrs,
GOutputStream *temp_out,
GCancellable *cancellable,
GError **error)
{
gboolean ret = FALSE;
/* Special handling for symlinks in bare repositories */
if (is_symlink && self->mode == OSTREE_REPO_MODE_BARE)
{
/* Now that we know the checksum is valid, apply uid/gid, mode bits,
* and extended attributes.
*/
if (G_UNLIKELY (fchownat (self->tmp_dir_fd, temp_filename,
g_file_info_get_attribute_uint32 (file_info, "unix::uid"),
g_file_info_get_attribute_uint32 (file_info, "unix::gid"),
AT_SYMLINK_NOFOLLOW) == -1))
{
ot_util_set_error_from_errno (error, errno);
goto out;
}
/* Sadly we can't use at-relative API for symlink xattrs
* because there's no lsetxattrat.
*/
if (xattrs != NULL)
{
if (!_ostree_set_xattrs (temp_file, xattrs, cancellable, error))
goto out;
}
}
else
{
int fd;
int res;
g_assert (temp_out != NULL);
fd = g_file_descriptor_based_get_fd ((GFileDescriptorBased*)temp_out);
if (objtype == OSTREE_OBJECT_TYPE_FILE && self->mode == OSTREE_REPO_MODE_BARE)
{
g_assert (file_info != NULL);
do
res = fchown (fd,
g_file_info_get_attribute_uint32 (file_info, "unix::uid"),
g_file_info_get_attribute_uint32 (file_info, "unix::gid"));
while (G_UNLIKELY (res == -1 && errno == EINTR));
if (G_UNLIKELY (res == -1))
{
ot_util_set_error_from_errno (error, errno);
goto out;
}
do
res = fchmod (fd, g_file_info_get_attribute_uint32 (file_info, "unix::mode"));
while (G_UNLIKELY (res == -1 && errno == EINTR));
if (G_UNLIKELY (res == -1))
{
ot_util_set_error_from_errno (error, errno);
goto out;
}
if (xattrs)
{
if (!_ostree_set_xattrs_fd (fd, xattrs, cancellable, error))
goto out;
}
}
/* Ensure that in case of a power cut, these files have the data we
* want. See http://lwn.net/Articles/322823/
*/
if (fsync (fd) == -1)
{
ot_util_set_error_from_errno (error, errno);
goto out;
}
if (!g_output_stream_close (temp_out, cancellable, error))
goto out;
}
if (!_ostree_repo_ensure_loose_objdir_at (self->objects_dir_fd, loose_path,
cancellable, error))
goto out;
if (G_UNLIKELY (renameat (self->tmp_dir_fd, temp_filename,
self->objects_dir_fd, loose_path) == -1))
{
if (errno != EEXIST)
{
ot_util_set_error_from_errno (error, errno);
g_prefix_error (error, "Storing file '%s': ", temp_filename);
goto out;
}
else
(void) unlinkat (self->tmp_dir_fd, temp_filename, 0);
}
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_at (int tmp_dirfd,
const char *target,
char **out_name,
GCancellable *cancellable,
GError **error)
{
gboolean ret = FALSE;
gs_free char *tmpname = NULL;
guint i;
const int max_attempts = 128;
for (i = 0; i < max_attempts; i++)
{
g_free (tmpname);
tmpname = gsystem_fileutil_gen_tmp_name (NULL, NULL);
if (symlinkat (target, tmp_dirfd, 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;
gs_transfer_out_value (out_name, &tmpname);
out:
return ret;
}
static gboolean
write_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 *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;
gs_unref_object GOutputStream *temp_out = NULL;
gboolean have_obj;
GChecksum *checksum = NULL;
gboolean temp_file_is_regular;
gboolean is_symlink = FALSE;
char loose_objpath[_OSTREE_LOOSE_PATH_MAX];
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 (!_ostree_repo_has_loose_object (self, expected_checksum, objtype,
&have_obj, loose_objpath,
cancellable, error))
goto out;
if (have_obj)
{
ret = TRUE;
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)
{
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, 0,
cancellable, error) < 0)
goto out;
}
else if (repo_mode == OSTREE_REPO_MODE_BARE && is_symlink)
{
if (!make_temporary_symlink_at (self->tmp_dir_fd,
g_file_info_get_symlink_target (file_info),
&temp_filename,
cancellable, error))
goto out;
temp_file = g_file_get_child (self->tmp_dir, temp_filename);
}
else if (repo_mode == OSTREE_REPO_MODE_ARCHIVE_Z2)
{
gs_unref_variant GVariant *file_meta = 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);
/* Don't close the base; we'll do that later */
g_filter_output_stream_set_close_base_stream ((GFilterOutputStream*)compressed_out_stream, FALSE);
if (g_output_stream_splice (compressed_out_stream, file_input, 0,
cancellable, error) < 0)
goto out;
}
}
else
g_assert_not_reached ();
}
else
{
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,
0,
cancellable, error) < 0)
goto out;
temp_file_is_regular = TRUE;
}
if (temp_out)
{
if (!g_output_stream_flush (temp_out, cancellable, error))
goto out;
}
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_loose_object (self, actual_checksum, objtype,
&have_obj, loose_objpath,
cancellable, error))
goto out;
do_commit = !have_obj;
if (do_commit)
{
if (!commit_loose_object_trusted (self, objtype, loose_objpath,
temp_file, temp_filename,
is_symlink, file_info,
xattrs, temp_out,
cancellable, error))
goto out;
g_clear_pointer (&temp_filename, g_free);
g_clear_object (&temp_file);
}
g_mutex_lock (&self->txn_stats_lock);
if (do_commit)
{
if (OSTREE_OBJECT_TYPE_IS_META (objtype))
{
self->txn_stats.metadata_objects_written++;
}
else
{
self->txn_stats.content_objects_written++;
self->txn_stats.content_bytes_written += file_object_length;
}
}
if (OSTREE_OBJECT_TYPE_IS_META (objtype))
self->txn_stats.metadata_objects_total++;
else
self->txn_stats.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_filename)
(void) unlinkat (self->tmp_dir_fd, temp_filename, 0);
g_clear_pointer (&checksum, (GDestroyNotify) g_checksum_free);
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 (!_ostree_repo_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);
}
/**
* ostree_repo_scan_hardlinks:
* @self: An #OstreeRepo
* @cancellable: Cancellable
* @error: Error
*
* When ostree builds a mutable tree from directory like in
* ostree_repo_write_directory_to_mtree(), it has to scan all files that you
* pass in and compute their checksums. If your commit contains hardlinks from
* ostree's existing repo, ostree can build a mapping of device numbers and
* inodes to their checksum.
*
* There is an upfront cost to creating this mapping, as this will scan the
* entire objects directory. If your commit is composed of mostly hardlinks to
* existing ostree objects, then this will speed up considerably, so call it
* before you call ostree_write_directory_to_mtree() or similar.
*/
gboolean
ostree_repo_scan_hardlinks (OstreeRepo *self,
GCancellable *cancellable,
GError **error)
{
gboolean ret = FALSE;
g_return_val_if_fail (self->in_transaction == TRUE, FALSE);
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;
out:
return ret;
}
/**
* ostree_repo_prepare_transaction:
* @self: An #OstreeRepo
* @out_transaction_resume: (allow-none) (out): Whether this transaction
* is resuming from a previous one.
* @cancellable: Cancellable
* @error: Error
*
* Starts or resumes a transaction. In order to write to a repo, you
* need to start a transaction. You can complete the transaction with
* ostree_repo_commit_transaction(), or abort the transaction with
* ostree_repo_abort_transaction().
*
* Currently, transactions are not atomic, and aborting a transaction
* will not erase any data you write during the transaction.
*/
gboolean
ostree_repo_prepare_transaction (OstreeRepo *self,
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;
memset (&self->txn_stats, 0, sizeof (OstreeRepoTransactionStats));
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;
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;
}
static void
ensure_txn_refs (OstreeRepo *self)
{
if (self->txn_refs == NULL)
self->txn_refs = g_hash_table_new_full (g_str_hash, g_str_equal, g_free, g_free);
}
/**
* ostree_repo_transaction_set_refspec:
* @self: An #OstreeRepo
* @refspec: The refspec to write
* @checksum: The checksum to point it to
*
* Like ostree_repo_transaction_set__ref(), but takes concatenated
* @refspec format as input instead of separate remote and name
* arguments.
*/
void
ostree_repo_transaction_set_refspec (OstreeRepo *self,
const char *refspec,
const char *checksum)
{
g_return_if_fail (self->in_transaction == TRUE);
ensure_txn_refs (self);
g_hash_table_replace (self->txn_refs, g_strdup (refspec), g_strdup (checksum));
}
/**
* ostree_repo_transaction_set_ref:
* @self: An #OstreeRepo
* @remote: (allow-none): A remote for the ref
* @ref: The ref to write
* @checksum: The checksum to point it to
*
* If @checksum is not %NULL, then record it as the target of ref named
* @ref; if @remote is provided, the ref will appear to originate from that
* remote.
*
* Otherwise, if @checksum is %NULL, then record that the ref should
* be deleted.
*
* The change will not be written out immediately, but when the transaction
* is completed with ostree_repo_complete_transaction(). If the transaction
* is instead aborted with ostree_repo_abort_transaction(), no changes will
* be made to the repository.
*/
void
ostree_repo_transaction_set_ref (OstreeRepo *self,
const char *remote,
const char *ref,
const char *checksum)
{
char *refspec;
g_return_if_fail (self->in_transaction == TRUE);
ensure_txn_refs (self);
if (remote)
refspec = g_strdup_printf ("%s:%s", remote, ref);
else
refspec = g_strdup (ref);
g_hash_table_replace (self->txn_refs, refspec, g_strdup (checksum));
}
/**
* ostree_repo_commit_transaction:
* @self: An #OstreeRepo
* @out_stats: (allow-none) (out): A set of statisitics of things
* that happened during this transaction.
* @cancellable: Cancellable
* @error: Error
*
* Complete the transaction. Any refs set with
* ostree_repo_transaction_set_ref() or
* ostree_repo_transaction_set_refspec() will be written out.
*/
gboolean
ostree_repo_commit_transaction (OstreeRepo *self,
OstreeRepoTransactionStats *out_stats,
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 (self->loose_object_devino_hash)
g_hash_table_remove_all (self->loose_object_devino_hash);
if (self->txn_refs)
if (!_ostree_repo_update_refs (self, self->txn_refs, cancellable, error))
goto out;
g_clear_pointer (&self->txn_refs, g_hash_table_destroy);
self->in_transaction = FALSE;
if (!ot_gfile_ensure_unlinked (self->transaction_lock_path, cancellable, error))
goto out;
if (out_stats)
*out_stats = self->txn_stats;
ret = TRUE;
out:
return ret;
}
gboolean
ostree_repo_abort_transaction (OstreeRepo *self,
GCancellable *cancellable,
GError **error)
{
gboolean ret = FALSE;
if (!self->in_transaction)
return TRUE;
if (!cleanup_tmpdir (self, cancellable, error))
goto out;
if (self->loose_object_devino_hash)
g_hash_table_remove_all (self->loose_object_devino_hash);
g_clear_pointer (&self->txn_refs, g_hash_table_destroy);
self->in_transaction = FALSE;
ret = TRUE;
out:
return ret;
}
/**
* ostree_repo_write_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_write_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 write_object (self, objtype, expected_checksum, input, 0, out_csum,
cancellable, error);
}
/**
* ostree_repo_write_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_write_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 write_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;
} WriteMetadataAsyncData;
static void
write_metadata_async_data_free (gpointer user_data)
{
WriteMetadataAsyncData *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
write_metadata_thread (GSimpleAsyncResult *res,
GObject *object,
GCancellable *cancellable)
{
GError *error = NULL;
WriteMetadataAsyncData *data;
data = g_simple_async_result_get_op_res_gpointer (res);
if (!ostree_repo_write_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_write_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 writed
* @user_data: Data for @callback
*
* Asynchronously store the metadata object @variant. If provided,
* the checksum @expected_checksum will be verified.
*/
void
ostree_repo_write_metadata_async (OstreeRepo *self,
OstreeObjectType objtype,
const char *expected_checksum,
GVariant *object,
GCancellable *cancellable,
GAsyncReadyCallback callback,
gpointer user_data)
{
WriteMetadataAsyncData *asyncdata;
asyncdata = g_new0 (WriteMetadataAsyncData, 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_write_metadata_async);
g_simple_async_result_set_op_res_gpointer (asyncdata->result, asyncdata,
write_metadata_async_data_free);
g_simple_async_result_run_in_thread (asyncdata->result, write_metadata_thread, G_PRIORITY_DEFAULT, cancellable);
g_object_unref (asyncdata->result);
}
gboolean
ostree_repo_write_metadata_finish (OstreeRepo *self,
GAsyncResult *result,
guchar **out_csum,
GError **error)
{
GSimpleAsyncResult *simple = G_SIMPLE_ASYNC_RESULT (result);
WriteMetadataAsyncData *data;
g_warn_if_fail (g_simple_async_result_get_source_tag (simple) == ostree_repo_write_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_write_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_write_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;
}
/**
* ostree_repo_write_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_write_content_trusted (OstreeRepo *self,
const char *checksum,
GInputStream *object_input,
guint64 length,
GCancellable *cancellable,
GError **error)
{
return write_object (self, OSTREE_OBJECT_TYPE_FILE, checksum,
object_input, length, NULL,
cancellable, error);
}
/**
* ostree_repo_write_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_write_content (OstreeRepo *self,
const char *expected_checksum,
GInputStream *object_input,
guint64 length,
guchar **out_csum,
GCancellable *cancellable,
GError **error)
{
return write_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;
} WriteContentAsyncData;
static void
write_content_async_data_free (gpointer user_data)
{
WriteContentAsyncData *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
write_content_thread (GSimpleAsyncResult *res,
GObject *object,
GCancellable *cancellable)
{
GError *error = NULL;
WriteContentAsyncData *data;
data = g_simple_async_result_get_op_res_gpointer (res);
if (!ostree_repo_write_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_write_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 writed
* @user_data: User data for @callback
*
* Asynchronously store the content object @object. If provided, the
* checksum @expected_checksum will be verified.
*/
void
ostree_repo_write_content_async (OstreeRepo *self,
const char *expected_checksum,
GInputStream *object,
guint64 length,
GCancellable *cancellable,
GAsyncReadyCallback callback,
gpointer user_data)
{
WriteContentAsyncData *asyncdata;
asyncdata = g_new0 (WriteContentAsyncData, 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_write_content_async);
g_simple_async_result_set_op_res_gpointer (asyncdata->result, asyncdata,
write_content_async_data_free);
g_simple_async_result_run_in_thread (asyncdata->result, write_content_thread, G_PRIORITY_DEFAULT, cancellable);
g_object_unref (asyncdata->result);
}
/**
* ostree_repo_write_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_write_content_async().
*/
gboolean
ostree_repo_write_content_finish (OstreeRepo *self,
GAsyncResult *result,
guchar **out_csum,
GError **error)
{
GSimpleAsyncResult *simple = G_SIMPLE_ASYNC_RESULT (result);
WriteContentAsyncData *data;
g_warn_if_fail (g_simple_async_result_get_source_tag (simple) == ostree_repo_write_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_write_commit:
* @self: Repo
* @parent: (allow-none): ASCII SHA256 checksum for parent, or %NULL for none
* @subject: Subject
* @body: (allow-none): 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_write_commit (OstreeRepo *self,
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 (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_write_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;
GDestroyNotify destroy_notify;
};
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
write_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_write_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 (!write_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_write_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_contents_checksum (repo_dir));
ret = TRUE;
out:
return ret;
}
/**
* ostree_repo_write_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_write_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 (!write_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_write_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_write_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_write_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_write_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
* @destroy_notify: A #GDestroyNotify
*
* Returns: (transfer full): A new commit modifier.
*/
OstreeRepoCommitModifier *
ostree_repo_commit_modifier_new (OstreeRepoCommitModifierFlags flags,
OstreeRepoCommitFilter commit_filter,
gpointer user_data,
GDestroyNotify destroy_notify)
{
OstreeRepoCommitModifier *modifier = g_new0 (OstreeRepoCommitModifier, 1);
modifier->refcount = 1;
modifier->flags = flags;
modifier->filter = commit_filter;
modifier->user_data = user_data;
modifier->destroy_notify = destroy_notify;
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;
if (modifier->destroy_notify)
modifier->destroy_notify (modifier->user_data);
g_free (modifier);
return;
}
G_DEFINE_BOXED_TYPE(OstreeRepoCommitModifier, ostree_repo_commit_modifier,
ostree_repo_commit_modifier_ref,
ostree_repo_commit_modifier_unref);
static OstreeRepoTransactionStats *
ostree_repo_transaction_stats_copy (OstreeRepoTransactionStats *stats)
{
return g_memdup (stats, sizeof (OstreeRepoTransactionStats));
}
static void
ostree_repo_transaction_stats_free (OstreeRepoTransactionStats *stats)
{
return g_free (stats);
}
G_DEFINE_BOXED_TYPE(OstreeRepoTransactionStats, ostree_repo_transaction_stats,
ostree_repo_transaction_stats_copy,
ostree_repo_transaction_stats_free);
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