232 lines
7.8 KiB
C
232 lines
7.8 KiB
C
/*
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* Copyright (C) 2013 Colin Walters <walters@verbum.org>
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*
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* SPDX-License-Identifier: LGPL-2.0+
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#pragma once
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#include "ostree-core.h"
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#include "otutil.h"
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#include <sys/stat.h>
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G_BEGIN_DECLS
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/* It's what gzip does, 9 is too slow */
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#define OSTREE_ARCHIVE_DEFAULT_COMPRESSION_LEVEL (6)
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/* Note the permissive group bits. We want to be liberal here and let individual machines
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* narrow permissions as needed via umask. This is important in setups where group ownership
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* can matter for repo management (like OpenShift). */
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#define DEFAULT_DIRECTORY_MODE 0775
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#define DEFAULT_REGFILE_MODE 0660
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/* This file contains private implementation data format definitions
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* read by multiple implementation .c files.
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*/
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/*
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* File objects are stored as a stream, with one #GVariant header,
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* followed by content.
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*
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* The file header is of the following form:
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*
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* <BE guint32 containing variant length>
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* u - uid
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* u - gid
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* u - mode
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* u - rdev (must be 0)
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* s - symlink target
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* a(ayay) - xattrs
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*
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* Then the rest of the stream is data.
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*/
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#define _OSTREE_FILE_HEADER_GVARIANT_FORMAT G_VARIANT_TYPE ("(uuuusa(ayay))")
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/*
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* A variation on %OSTREE_FILE_HEADER_GVARIANT_FORMAT, used for
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* storing zlib-compressed content objects.
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*
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* <BE guint32 containing variant length>
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* t - size
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* u - uid
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* u - gid
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* u - mode
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* u - rdev (must be 0)
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* s - symlink target
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* a(ayay) - xattrs
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* ---
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* zlib-compressed data
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*/
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#define _OSTREE_ZLIB_FILE_HEADER_GVARIANT_FORMAT G_VARIANT_TYPE ("(tuuuusa(ayay))")
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GBytes *_ostree_file_header_new (GFileInfo *file_info,
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GVariant *xattrs);
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GBytes *_ostree_zlib_file_header_new (GFileInfo *file_info,
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GVariant *xattrs);
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gboolean
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_ostree_make_temporary_symlink_at (int tmp_dirfd,
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const char *target,
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char **out_name,
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GCancellable *cancellable,
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GError **error);
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GFileInfo * _ostree_stbuf_to_gfileinfo (const struct stat *stbuf);
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void _ostree_gfileinfo_to_stbuf (GFileInfo *file_info, struct stat *out_stbuf);
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gboolean _ostree_gfileinfo_equal (GFileInfo *a, GFileInfo *b);
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gboolean _ostree_stbuf_equal (struct stat *stbuf_a, struct stat *stbuf_b);
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GFileInfo * _ostree_mode_uidgid_to_gfileinfo (mode_t mode, uid_t uid, gid_t gid);
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static inline void
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_ostree_checksum_inplace_from_bytes_v (GVariant *csum_v, char *buf)
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{
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const guint8*csum = ostree_checksum_bytes_peek (csum_v);
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g_assert (csum);
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ostree_checksum_inplace_from_bytes (csum, buf);
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}
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/* XX/checksum-2.extension, but let's just use 256 for a
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* bit of overkill.
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*/
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#define _OSTREE_LOOSE_PATH_MAX (256)
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/* GVariant format for ostree.sizes metadata entries. */
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#define _OSTREE_OBJECT_SIZES_ENTRY_SIGNATURE "ay"
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char *
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_ostree_get_relative_object_path (const char *checksum,
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OstreeObjectType type,
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gboolean compressed);
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char *
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_ostree_get_relative_static_delta_path (const char *from,
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const char *to,
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const char *target);
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char *
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_ostree_get_relative_static_delta_superblock_path (const char *from,
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const char *to);
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char *
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_ostree_get_relative_static_delta_detachedmeta_path (const char *from,
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const char *to);
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char *
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_ostree_get_relative_static_delta_part_path (const char *from,
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const char *to,
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guint i);
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char *
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_ostree_get_relative_static_delta_index_path (const char *to);
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static inline char * _ostree_get_commitpartial_path (const char *checksum)
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{
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return g_strconcat ("state/", checksum, ".commitpartial", NULL);
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}
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gboolean
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_ostree_validate_ref_fragment (const char *fragment,
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GError **error);
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gboolean
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_ostree_validate_bareuseronly_mode (guint32 mode,
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const char *checksum,
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GError **error);
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static inline gboolean
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_ostree_validate_bareuseronly_mode_finfo (GFileInfo *finfo,
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const char *checksum,
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GError **error)
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{
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const guint32 content_mode = g_file_info_get_attribute_uint32 (finfo, "unix::mode");
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return _ostree_validate_bareuseronly_mode (content_mode, checksum, error);
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}
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gboolean
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_ostree_compare_object_checksum (OstreeObjectType objtype,
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const char *expected,
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const char *actual,
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GError **error);
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gboolean
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_ostree_parse_delta_name (const char *delta_name,
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char **out_from,
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char **out_to,
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GError **error);
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void
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_ostree_loose_path (char *buf,
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const char *checksum,
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OstreeObjectType objtype,
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OstreeRepoMode repo_mode);
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gboolean _ostree_validate_structureof_metadata (OstreeObjectType objtype,
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GVariant *commit,
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GError **error);
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gboolean
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_ostree_verify_metadata_object (OstreeObjectType objtype,
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const char *expected_checksum,
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GVariant *metadata,
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GError **error);
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#define _OSTREE_METADATA_GPGSIGS_NAME "ostree.gpgsigs"
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#define _OSTREE_METADATA_GPGSIGS_TYPE G_VARIANT_TYPE ("aay")
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static inline gboolean
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_ostree_repo_mode_is_bare (OstreeRepoMode mode)
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{
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return
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mode == OSTREE_REPO_MODE_BARE ||
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mode == OSTREE_REPO_MODE_BARE_USER ||
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mode == OSTREE_REPO_MODE_BARE_USER_ONLY;
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}
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#ifndef OSTREE_DISABLE_GPGME
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GVariant *
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_ostree_detached_metadata_append_gpg_sig (GVariant *existing_metadata,
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GBytes *signature_bytes);
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#endif
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GFile *
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_ostree_get_default_sysroot_path (void);
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_OSTREE_PUBLIC
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gboolean
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_ostree_raw_file_to_archive_stream (GInputStream *input,
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GFileInfo *file_info,
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GVariant *xattrs,
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guint compression_level,
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GInputStream **out_input,
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GCancellable *cancellable,
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GError **error);
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gboolean
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_ostree_compare_timestamps (const char *current_rev,
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guint64 current_ts,
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const char *new_rev,
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guint64 new_ts,
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GError **error);
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G_END_DECLS
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