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/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*-
*
* Copyright (C) 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.
*/
#include "config.h"
#include <gio/gunixinputstream.h>
#include <gio/gunixoutputstream.h>
#include <gio/gfiledescriptorbased.h>
#include "ostree-core-private.h"
#include "ostree-repo-private.h"
#include "ostree-lzma-decompressor.h"
#include "ostree-cmdprivate.h"
#include "ostree-checksum-input-stream.h"
#include "ostree-repo-static-delta-private.h"
#include "otutil.h"
gboolean
_ostree_static_delta_parse_checksum_array (GVariant *array,
guint8 **out_checksums_array,
guint *out_n_checksums,
GError **error)
{
gsize n = g_variant_n_children (array);
guint n_checksums;
n_checksums = n / OSTREE_STATIC_DELTA_OBJTYPE_CSUM_LEN;
if (G_UNLIKELY(n == 0 ||
n > (G_MAXUINT32/OSTREE_STATIC_DELTA_OBJTYPE_CSUM_LEN) ||
(n_checksums * OSTREE_STATIC_DELTA_OBJTYPE_CSUM_LEN) != n))
{
g_set_error (error, G_IO_ERROR, G_IO_ERROR_FAILED,
"Invalid checksum array length %" G_GSIZE_FORMAT, n);
return FALSE;
}
*out_checksums_array = (gpointer)g_variant_get_data (array);
*out_n_checksums = n_checksums;
return TRUE;
}
/**
* ostree_repo_list_static_delta_names:
* @self: Repo
* @out_deltas: (out) (element-type utf8) (transfer container): String name of deltas (checksum-checksum.delta)
* @cancellable: Cancellable
* @error: Error
*
* This function synchronously enumerates all static deltas in the
* repository, returning its result in @out_deltas.
*/
gboolean
ostree_repo_list_static_delta_names (OstreeRepo *self,
GPtrArray **out_deltas,
GCancellable *cancellable,
GError **error)
{
gboolean ret = FALSE;
g_autoptr(GPtrArray) ret_deltas = NULL;
g_autoptr(GFileEnumerator) dir_enum = NULL;
ret_deltas = g_ptr_array_new_with_free_func (g_free);
if (g_file_query_exists (self->deltas_dir, NULL))
{
dir_enum = g_file_enumerate_children (self->deltas_dir, OSTREE_GIO_FAST_QUERYINFO,
G_FILE_QUERY_INFO_NOFOLLOW_SYMLINKS,
NULL, error);
if (!dir_enum)
goto out;
while (TRUE)
{
g_autoptr(GFileEnumerator) dir_enum2 = NULL;
GFileInfo *file_info;
GFile *child;
if (!gs_file_enumerator_iterate (dir_enum, &file_info, &child,
NULL, error))
goto out;
if (file_info == NULL)
break;
if (g_file_info_get_file_type (file_info) != G_FILE_TYPE_DIRECTORY)
continue;
dir_enum2 = g_file_enumerate_children (child, OSTREE_GIO_FAST_QUERYINFO,
G_FILE_QUERY_INFO_NOFOLLOW_SYMLINKS,
NULL, error);
if (!dir_enum2)
goto out;
while (TRUE)
{
GFileInfo *file_info2;
GFile *child2;
const char *name1;
const char *name2;
if (!gs_file_enumerator_iterate (dir_enum2, &file_info2, &child2,
NULL, error))
goto out;
if (file_info2 == NULL)
break;
if (g_file_info_get_file_type (file_info2) != G_FILE_TYPE_DIRECTORY)
continue;
name1 = gs_file_get_basename_cached (child);
name2 = gs_file_get_basename_cached (child2);
{
g_autoptr(GFile) meta_path = g_file_get_child (child2, "superblock");
if (g_file_query_exists (meta_path, NULL))
{
g_autofree char *buf = g_strconcat (name1, name2, NULL);
GString *out = g_string_new ("");
char checksum[65];
guchar csum[OSTREE_SHA256_DIGEST_LEN];
const char *dash = strchr (buf, '-');
ostree_checksum_b64_inplace_to_bytes (buf, csum);
ostree_checksum_inplace_from_bytes (csum, checksum);
g_string_append (out, checksum);
if (dash)
{
g_string_append_c (out, '-');
ostree_checksum_b64_inplace_to_bytes (dash+1, csum);
ostree_checksum_inplace_from_bytes (csum, checksum);
g_string_append (out, checksum);
}
g_ptr_array_add (ret_deltas, g_string_free (out, FALSE));
}
}
}
}
}
ret = TRUE;
gs_transfer_out_value (out_deltas, &ret_deltas);
out:
return ret;
}
gboolean
_ostree_repo_static_delta_part_have_all_objects (OstreeRepo *repo,
GVariant *checksum_array,
gboolean *out_have_all,
GCancellable *cancellable,
GError **error)
{
gboolean ret = FALSE;
guint8 *checksums_data;
guint i,n_checksums;
gboolean have_object = TRUE;
if (!_ostree_static_delta_parse_checksum_array (checksum_array,
&checksums_data,
&n_checksums,
error))
goto out;
for (i = 0; i < n_checksums; i++)
{
guint8 objtype = *checksums_data;
const guint8 *csum = checksums_data + 1;
char tmp_checksum[65];
if (G_UNLIKELY(!ostree_validate_structureof_objtype (objtype, error)))
goto out;
ostree_checksum_inplace_from_bytes (csum, tmp_checksum);
if (!ostree_repo_has_object (repo, (OstreeObjectType) objtype, tmp_checksum,
&have_object, cancellable, error))
goto out;
if (!have_object)
break;
checksums_data += OSTREE_STATIC_DELTA_OBJTYPE_CSUM_LEN;
}
ret = TRUE;
*out_have_all = have_object;
out:
return ret;
}
/**
* ostree_repo_static_delta_execute_offline:
* @self: Repo
* @dir_or_file: Path to a directory containing static delta data, or directly to the superblock
* @skip_validation: If %TRUE, assume data integrity
* @cancellable: Cancellable
* @error: Error
*
* Given a directory representing an already-downloaded static delta
* on disk, apply it, generating a new commit. The directory must be
* named with the form "FROM-TO", where both are checksums, and it
* must contain a file named "superblock", along with at least one part.
*/
gboolean
ostree_repo_static_delta_execute_offline (OstreeRepo *self,
GFile *dir_or_file,
gboolean skip_validation,
GCancellable *cancellable,
GError **error)
{
gboolean ret = FALSE;
guint i, n;
const char *dir_or_file_path = NULL;
glnx_fd_close int meta_fd = -1;
glnx_fd_close int dfd = -1;
g_autoptr(GVariant) meta = NULL;
g_autoptr(GVariant) headers = NULL;
g_autoptr(GVariant) metadata = NULL;
g_autoptr(GVariant) fallback = NULL;
g_autofree char *to_checksum = NULL;
g_autofree char *from_checksum = NULL;
g_autofree char *basename = NULL;
dir_or_file_path = gs_file_get_path_cached (dir_or_file);
/* First, try opening it as a directory */
dfd = glnx_opendirat_with_errno (AT_FDCWD, dir_or_file_path, TRUE);
if (dfd < 0)
{
if (errno != ENOTDIR)
{
glnx_set_error_from_errno (error);
goto out;
}
else
{
g_autofree char *dir = dirname (g_strdup (dir_or_file_path));
basename = g_path_get_basename (dir_or_file_path);
if (!glnx_opendirat (AT_FDCWD, dir, TRUE, &dfd, error))
goto out;
}
}
else
basename = g_strdup ("superblock");
meta_fd = openat (dfd, basename, O_RDONLY | O_CLOEXEC);
if (meta_fd < 0)
{
glnx_set_error_from_errno (error);
goto out;
}
if (!ot_util_variant_map_fd (meta_fd, 0, G_VARIANT_TYPE (OSTREE_STATIC_DELTA_SUPERBLOCK_FORMAT),
FALSE, &meta, error))
goto out;
/* Parsing OSTREE_STATIC_DELTA_SUPERBLOCK_FORMAT */
metadata = g_variant_get_child_value (meta, 0);
/* Write the to-commit object */
{
g_autoptr(GVariant) to_csum_v = NULL;
g_autoptr(GVariant) from_csum_v = NULL;
g_autoptr(GVariant) to_commit = NULL;
gboolean have_to_commit;
gboolean have_from_commit;
to_csum_v = g_variant_get_child_value (meta, 3);
if (!ostree_validate_structureof_csum_v (to_csum_v, error))
goto out;
to_checksum = ostree_checksum_from_bytes_v (to_csum_v);
from_csum_v = g_variant_get_child_value (meta, 2);
if (g_variant_n_children (from_csum_v) > 0)
{
if (!ostree_validate_structureof_csum_v (from_csum_v, error))
goto out;
from_checksum = ostree_checksum_from_bytes_v (from_csum_v);
if (!ostree_repo_has_object (self, OSTREE_OBJECT_TYPE_COMMIT, from_checksum,
&have_from_commit, cancellable, error))
goto out;
if (!have_from_commit)
{
g_set_error (error, G_IO_ERROR, G_IO_ERROR_FAILED,
"Commit %s, which is the delta source, is not in repository", from_checksum);
goto out;
}
}
if (!ostree_repo_has_object (self, OSTREE_OBJECT_TYPE_COMMIT, to_checksum,
&have_to_commit, cancellable, error))
goto out;
if (!have_to_commit)
{
g_autofree char *detached_path = _ostree_get_relative_static_delta_path (from_checksum, to_checksum, "commitmeta");
g_autoptr(GVariant) detached_data = NULL;
detached_data = g_variant_lookup_value (metadata, detached_path, G_VARIANT_TYPE("a{sv}"));
if (detached_data && !ostree_repo_write_commit_detached_metadata (self,
to_checksum,
detached_data,
cancellable,
error))
goto out;
to_commit = g_variant_get_child_value (meta, 4);
if (!ostree_repo_write_metadata (self, OSTREE_OBJECT_TYPE_COMMIT,
to_checksum, to_commit, NULL,
cancellable, error))
goto out;
}
}
fallback = g_variant_get_child_value (meta, 7);
if (g_variant_n_children (fallback) > 0)
{
g_set_error (error, G_IO_ERROR, G_IO_ERROR_FAILED,
"Cannot execute delta offline: contains nonempty http fallback entries");
goto out;
}
headers = g_variant_get_child_value (meta, 6);
n = g_variant_n_children (headers);
for (i = 0; i < n; i++)
{
guint32 version;
guint64 size;
guint64 usize;
const guchar *csum;
char checksum[65];
gboolean have_all;
g_autoptr(GInputStream) part_in = NULL;
g_autoptr(GBytes) delta_data = NULL;
g_autoptr(GVariant) inline_part_data = NULL;
g_autoptr(GVariant) header = NULL;
g_autoptr(GVariant) csum_v = NULL;
g_autoptr(GVariant) objects = NULL;
g_autoptr(GVariant) part = NULL;
g_autofree char *deltapart_path = NULL;
OstreeStaticDeltaOpenFlags delta_open_flags =
skip_validation ? OSTREE_STATIC_DELTA_OPEN_FLAGS_SKIP_CHECKSUM : 0;
header = g_variant_get_child_value (headers, i);
g_variant_get (header, "(u@aytt@ay)", &version, &csum_v, &size, &usize, &objects);
if (version > OSTREE_DELTAPART_VERSION)
{
g_set_error (error, G_IO_ERROR, G_IO_ERROR_FAILED,
"Delta part has too new version %u", version);
goto out;
}
if (!_ostree_repo_static_delta_part_have_all_objects (self, objects, &have_all,
cancellable, error))
goto out;
/* If we already have these objects, don't bother executing the
* static delta.
*/
if (have_all)
continue;
csum = ostree_checksum_bytes_peek_validate (csum_v, error);
if (!csum)
goto out;
ostree_checksum_inplace_from_bytes (csum, checksum);
deltapart_path =
_ostree_get_relative_static_delta_part_path (from_checksum, to_checksum, i);
inline_part_data = g_variant_lookup_value (metadata, deltapart_path, G_VARIANT_TYPE("(yay)"));
if (inline_part_data)
{
g_autoptr(GBytes) inline_part_bytes = g_variant_get_data_as_bytes (inline_part_data);
part_in = g_memory_input_stream_new_from_bytes (inline_part_bytes);
/* For inline parts, we don't checksum, because it's
* included with the metadata, so we're not trying to
* protect against MITM or such. Non-security related
* checksums should be done at the underlying storage layer.
*/
delta_open_flags |= OSTREE_STATIC_DELTA_OPEN_FLAGS_SKIP_CHECKSUM;
if (!_ostree_static_delta_part_open (part_in, inline_part_bytes,
delta_open_flags,
NULL,
&part,
cancellable, error))
goto out;
}
else
{
g_autofree char *relpath = g_strdup_printf ("%u", i); /* TODO avoid malloc here */
glnx_fd_close int part_fd = openat (dfd, relpath, O_RDONLY | O_CLOEXEC);
if (part_fd < 0)
{
glnx_set_error_from_errno (error);
g_prefix_error (error, "Opening deltapart '%s': ", deltapart_path);
goto out;
}
part_in = g_unix_input_stream_new (part_fd, FALSE);
if (!_ostree_static_delta_part_open (part_in, NULL,
delta_open_flags,
checksum,
&part,
cancellable, error))
goto out;
}
if (!_ostree_static_delta_part_execute (self, objects, part, skip_validation,
FALSE, NULL,
cancellable, error))
{
g_prefix_error (error, "Executing delta part %i: ", i);
goto out;
}
}
ret = TRUE;
out:
return ret;
}
gboolean
_ostree_static_delta_part_open (GInputStream *part_in,
GBytes *inline_part_bytes,
OstreeStaticDeltaOpenFlags flags,
const char *expected_checksum,
GVariant **out_part,
GCancellable *cancellable,
GError **error)
{
gboolean ret = FALSE;
const gboolean trusted = (flags & OSTREE_STATIC_DELTA_OPEN_FLAGS_VARIANT_TRUSTED) > 0;
const gboolean skip_checksum = (flags & OSTREE_STATIC_DELTA_OPEN_FLAGS_SKIP_CHECKSUM) > 0;
gsize bytes_read;
guint8 comptype;
g_autoptr(GChecksum) checksum = NULL;
g_autoptr(GInputStream) checksum_in = NULL;
g_autoptr(GVariant) ret_part = NULL;
GInputStream *source_in;
/* We either take a fd or a GBytes reference */
g_return_val_if_fail (G_IS_FILE_DESCRIPTOR_BASED (part_in) || inline_part_bytes != NULL, FALSE);
g_return_val_if_fail (skip_checksum || expected_checksum != NULL, FALSE);
if (!skip_checksum)
{
checksum = g_checksum_new (G_CHECKSUM_SHA256);
checksum_in = (GInputStream*)ostree_checksum_input_stream_new (part_in, checksum);
source_in = checksum_in;
}
else
{
source_in = part_in;
}
{ guint8 buf[1];
/* First byte is compression type */
if (!g_input_stream_read_all (source_in, buf, sizeof(buf), &bytes_read,
cancellable, error))
{
g_prefix_error (error, "Reading initial compression flag byte: ");
goto out;
}
comptype = buf[0];
}
switch (comptype)
{
case 0:
if (!inline_part_bytes)
{
int part_fd = g_file_descriptor_based_get_fd ((GFileDescriptorBased*)part_in);
/* No compression, no checksums - a fast path */
if (!ot_util_variant_map_fd (part_fd, 1, G_VARIANT_TYPE (OSTREE_STATIC_DELTA_PART_PAYLOAD_FORMAT_V0),
trusted, &ret_part, error))
goto out;
}
else
{
g_autoptr(GBytes) content_bytes = g_bytes_new_from_bytes (inline_part_bytes, 1,
g_bytes_get_size (inline_part_bytes) - 1);
ret_part = g_variant_new_from_bytes (G_VARIANT_TYPE (OSTREE_STATIC_DELTA_PART_PAYLOAD_FORMAT_V0),
content_bytes, trusted);
g_variant_ref_sink (ret_part);
}
if (!skip_checksum)
g_checksum_update (checksum, g_variant_get_data (ret_part),
g_variant_get_size (ret_part));
break;
case 'x':
{
g_autofree char *tmppath = g_strdup ("/var/tmp/ostree-delta-XXXXXX");
g_autoptr(GConverter) decomp = (GConverter*) _ostree_lzma_decompressor_new ();
g_autoptr(GInputStream) convin = g_converter_input_stream_new (source_in, decomp);
g_autoptr(GOutputStream) unpacked_out = NULL;
glnx_fd_close int unpacked_fd = -1;
gssize n_bytes_written;
unpacked_fd = g_mkstemp_full (tmppath, O_RDWR | O_CLOEXEC, 0640);
if (unpacked_fd < 0)
{
glnx_set_error_from_errno (error);
goto out;
}
/* Now make it autocleanup on process exit - in the future, we
* should consider caching unpacked deltas as well.
*/
if (unlink (tmppath) < 0)
{
glnx_set_error_from_errno (error);
goto out;
}
unpacked_out = g_unix_output_stream_new (unpacked_fd, FALSE);
n_bytes_written = g_output_stream_splice (unpacked_out, convin,
G_OUTPUT_STREAM_SPLICE_CLOSE_SOURCE |
G_OUTPUT_STREAM_SPLICE_CLOSE_TARGET,
cancellable, error);
if (n_bytes_written < 0)
goto out;
if (!ot_util_variant_map_fd (unpacked_fd, 0, G_VARIANT_TYPE (OSTREE_STATIC_DELTA_PART_PAYLOAD_FORMAT_V0),
trusted, &ret_part, error))
goto out;
}
break;
default:
g_set_error (error, G_IO_ERROR, G_IO_ERROR_FAILED,
"Invalid compression type '%u'", comptype);
goto out;
}
if (checksum)
{
const char *actual_checksum = g_checksum_get_string (checksum);
g_assert (expected_checksum != NULL);
if (strcmp (actual_checksum, expected_checksum) != 0)
{
g_set_error (error, G_IO_ERROR, G_IO_ERROR_FAILED,
"Checksum mismatch in static delta part; expected=%s actual=%s",
expected_checksum, actual_checksum);
goto out;
}
}
ret = TRUE;
*out_part = g_steal_pointer (&ret_part);
out:
return ret;
}
/*
* Displaying static delta parts
*/
static gboolean
show_one_part (OstreeRepo *self,
gboolean swap_endian,
const char *from,
const char *to,
GVariant *meta_entries,
guint i,
guint64 *total_size_ref,
guint64 *total_usize_ref,
GCancellable *cancellable,
GError **error)
{
gboolean ret = FALSE;
guint32 version;
guint64 size, usize;
g_autoptr(GVariant) objects = NULL;
g_autoptr(GInputStream) part_in = NULL;
g_autoptr(GVariant) part = NULL;
g_autofree char *part_path = _ostree_get_relative_static_delta_part_path (from, to, i);
gint part_fd = -1;
g_variant_get_child (meta_entries, i, "(u@aytt@ay)", &version, NULL, &size, &usize, &objects);
size = maybe_swap_endian_u64 (swap_endian, size);
usize = maybe_swap_endian_u64 (swap_endian, usize);
*total_size_ref += size;
*total_usize_ref += usize;
g_print ("PartMeta%u: nobjects=%u size=%" G_GUINT64_FORMAT " usize=%" G_GUINT64_FORMAT "\n",
i, (guint)(g_variant_get_size (objects) / OSTREE_STATIC_DELTA_OBJTYPE_CSUM_LEN), size, usize);
part_fd = openat (self->repo_dir_fd, part_path, O_RDONLY | O_CLOEXEC);
if (part_fd < 0)
{
glnx_set_error_from_errno (error);
goto out;
}
part_in = g_unix_input_stream_new (part_fd, FALSE);
if (!_ostree_static_delta_part_open (part_in, NULL,
OSTREE_STATIC_DELTA_OPEN_FLAGS_SKIP_CHECKSUM,
NULL,
&part,
cancellable, error))
goto out;
{ g_autoptr(GVariant) modes = NULL;
g_autoptr(GVariant) xattrs = NULL;
g_autoptr(GVariant) blob = NULL;
g_autoptr(GVariant) ops = NULL;
OstreeDeltaExecuteStats stats = { { 0, }, };
g_variant_get (part, "(@a(uuu)@aa(ayay)@ay@ay)",
&modes, &xattrs, &blob, &ops);
g_print ("PartPayload%u: nmodes=%" G_GUINT64_FORMAT
" nxattrs=%" G_GUINT64_FORMAT
" blobsize=%" G_GUINT64_FORMAT
" opsize=%" G_GUINT64_FORMAT
"\n",
i,
(guint64)g_variant_n_children (modes),
(guint64)g_variant_n_children (xattrs),
(guint64)g_variant_n_children (blob),
(guint64)g_variant_n_children (ops));
if (!_ostree_static_delta_part_execute (self, objects,
part, TRUE, TRUE,
&stats, cancellable, error))
goto out;
{ const guint *n_ops = stats.n_ops_executed;
g_print ("PartPayloadOps%u: openspliceclose=%u open=%u write=%u setread=%u "
"unsetread=%u close=%u bspatch=%u\n",
i, n_ops[0], n_ops[1], n_ops[2], n_ops[3], n_ops[4], n_ops[5], n_ops[6]);
}
}
ret = TRUE;
out:
return ret;
}
OstreeDeltaEndianness
_ostree_delta_get_endianness (GVariant *superblock,
gboolean *out_was_heuristic)
{
guint8 endianness_char;
g_autoptr(GVariant) delta_meta = NULL;
g_autoptr(GVariantDict) delta_metadict = NULL;
guint64 total_size = 0;
guint64 total_usize = 0;
guint total_objects = 0;
delta_meta = g_variant_get_child_value (superblock, 0);
delta_metadict = g_variant_dict_new (delta_meta);
if (out_was_heuristic)
*out_was_heuristic = FALSE;
if (g_variant_dict_lookup (delta_metadict, "ostree.endianness", "y", &endianness_char))
{
switch (endianness_char)
{
case 'l':
return OSTREE_DELTA_ENDIAN_LITTLE;
case 'B':
return OSTREE_DELTA_ENDIAN_BIG;
default:
return OSTREE_DELTA_ENDIAN_INVALID;
}
}
if (out_was_heuristic)
*out_was_heuristic = TRUE;
{ g_autoptr(GVariant) meta_entries = NULL;
guint n_parts;
guint i;
gboolean is_byteswapped = FALSE;
g_variant_get_child (superblock, 6, "@a" OSTREE_STATIC_DELTA_META_ENTRY_FORMAT, &meta_entries);
n_parts = g_variant_n_children (meta_entries);
for (i = 0; i < n_parts; i++)
{
g_autoptr(GVariant) objects = NULL;
guint64 size, usize;
guint n_objects;
g_variant_get_child (meta_entries, i, "(u@aytt@ay)", NULL, NULL, &size, &usize, &objects);
n_objects = (guint)(g_variant_get_size (objects) / OSTREE_STATIC_DELTA_OBJTYPE_CSUM_LEN);
total_objects += n_objects;
total_size += size;
total_usize += usize;
if (size > usize)
{
double ratio = ((double)size)/((double)usize);
/* This should really never happen where compressing things makes it more than 50% bigger.
*/
if (ratio > 1.2)
{
is_byteswapped = TRUE;
break;
}
}
}
if (!is_byteswapped)
{
/* If the average object size is greater than 4GiB, let's assume
* we're dealing with opposite endianness. I'm fairly confident
* no one is going to be shipping peta- or exa- byte size ostree
* deltas, period. Past the gigabyte scale you really want
* bittorrent or something.
*/
if ((total_size / total_objects) > G_MAXUINT32)
{
is_byteswapped = TRUE;
}
}
if (is_byteswapped)
{
switch (G_BYTE_ORDER)
{
case G_BIG_ENDIAN:
return OSTREE_DELTA_ENDIAN_LITTLE;
case G_LITTLE_ENDIAN:
return OSTREE_DELTA_ENDIAN_BIG;
default:
g_assert_not_reached ();
}
}
return G_BYTE_ORDER;
}
}
gboolean
_ostree_delta_needs_byteswap (GVariant *superblock)
{
switch (_ostree_delta_get_endianness (superblock, NULL))
{
case OSTREE_DELTA_ENDIAN_BIG:
return G_BYTE_ORDER == G_LITTLE_ENDIAN;
case OSTREE_DELTA_ENDIAN_LITTLE:
return G_BYTE_ORDER == G_BIG_ENDIAN;
default:
return FALSE;
}
}
gboolean
_ostree_repo_static_delta_delete (OstreeRepo *self,
const char *delta_id,
GCancellable *cancellable,
GError **error)
{
gboolean ret = FALSE;
g_autofree char *from = NULL;
g_autofree char *to = NULL;
g_autofree char *deltadir = NULL;
struct stat buf;
_ostree_parse_delta_name (delta_id, &from, &to);
deltadir = _ostree_get_relative_static_delta_path (from, to, NULL);
if (fstatat (self->repo_dir_fd, deltadir, &buf, 0) != 0)
{
if (errno == ENOENT)
g_set_error (error, G_IO_ERROR, G_IO_ERROR_NOT_FOUND,
"Can't find delta %s", delta_id);
else
glnx_set_error_from_errno (error);
goto out;
}
if (!glnx_shutil_rm_rf_at (self->repo_dir_fd, deltadir,
cancellable, error))
goto out;
ret = TRUE;
out:
return ret;
}
gboolean
_ostree_repo_static_delta_dump (OstreeRepo *self,
const char *delta_id,
GCancellable *cancellable,
GError **error)
{
gboolean ret = FALSE;
g_autofree char *from = NULL;
g_autofree char *to = NULL;
g_autofree char *superblock_path = NULL;
glnx_fd_close int superblock_fd = -1;
g_autoptr(GVariant) delta_superblock = NULL;
guint64 total_size = 0, total_usize = 0;
guint64 total_fallback_size = 0, total_fallback_usize = 0;
guint i;
OstreeDeltaEndianness endianness;
gboolean swap_endian = FALSE;
_ostree_parse_delta_name (delta_id, &from, &to);
superblock_path = _ostree_get_relative_static_delta_superblock_path (from, to);
if (!ot_util_variant_map_at (self->repo_dir_fd, superblock_path,
(GVariantType*)OSTREE_STATIC_DELTA_SUPERBLOCK_FORMAT,
TRUE, &delta_superblock, error))
goto out;
g_print ("%s\n", g_variant_print (delta_superblock, 1));
g_print ("Delta: %s\n", delta_id);
{ const char *endianness_description;
gboolean was_heuristic;
endianness = _ostree_delta_get_endianness (delta_superblock, &was_heuristic);
switch (endianness)
{
case OSTREE_DELTA_ENDIAN_BIG:
if (was_heuristic)
endianness_description = "big (heuristic)";
else
endianness_description = "big";
if (G_BYTE_ORDER == G_LITTLE_ENDIAN)
swap_endian = TRUE;
break;
case OSTREE_DELTA_ENDIAN_LITTLE:
if (was_heuristic)
endianness_description = "little (heuristic)";
else
endianness_description = "little";
if (G_BYTE_ORDER == G_BIG_ENDIAN)
swap_endian = TRUE;
break;
case OSTREE_DELTA_ENDIAN_INVALID:
endianness_description = "invalid";
break;
default:
g_assert_not_reached ();
}
g_print ("Endianness: %s\n", endianness_description);
}
{ guint64 ts;
g_variant_get_child (delta_superblock, 1, "t", &ts);
g_print ("Timestamp: %" G_GUINT64_FORMAT "\n", GUINT64_FROM_BE (ts));
}
{ g_autoptr(GVariant) recurse = NULL;
g_variant_get_child (delta_superblock, 5, "@ay", &recurse);
g_print ("Number of parents: %u\n", (guint)(g_variant_get_size (recurse) / (OSTREE_SHA256_DIGEST_LEN * 2)));
}
{ g_autoptr(GVariant) fallback = NULL;
guint n_fallback;
g_variant_get_child (delta_superblock, 7, "@a" OSTREE_STATIC_DELTA_FALLBACK_FORMAT, &fallback);
n_fallback = g_variant_n_children (fallback);
g_print ("Number of fallback entries: %u\n", n_fallback);
for (i = 0; i < n_fallback; i++)
{
guint64 size, usize;
g_variant_get_child (fallback, i, "(y@aytt)", NULL, NULL, &size, &usize);
size = maybe_swap_endian_u64 (swap_endian, size);
usize = maybe_swap_endian_u64 (swap_endian, usize);
total_fallback_size += size;
total_fallback_usize += usize;
}
{ g_autofree char *sizestr = g_format_size (total_fallback_size);
g_autofree char *usizestr = g_format_size (total_fallback_usize);
g_print ("Total Fallback Size: %" G_GUINT64_FORMAT " (%s)\n", total_fallback_size, sizestr);
g_print ("Total Fallback Uncompressed Size: %" G_GUINT64_FORMAT " (%s)\n", total_fallback_usize, usizestr);
}
}
{ g_autoptr(GVariant) meta_entries = NULL;
guint n_parts;
g_variant_get_child (delta_superblock, 6, "@a" OSTREE_STATIC_DELTA_META_ENTRY_FORMAT, &meta_entries);
n_parts = g_variant_n_children (meta_entries);
g_print ("Number of parts: %u\n", n_parts);
for (i = 0; i < n_parts; i++)
{
if (!show_one_part (self, swap_endian, from, to, meta_entries, i,
&total_size, &total_usize,
cancellable, error))
goto out;
}
}
{ g_autofree char *sizestr = g_format_size (total_size);
g_autofree char *usizestr = g_format_size (total_usize);
g_print ("Total Part Size: %" G_GUINT64_FORMAT " (%s)\n", total_size, sizestr);
g_print ("Total Part Uncompressed Size: %" G_GUINT64_FORMAT " (%s)\n", total_usize, usizestr);
}
{ guint64 overall_size = total_size + total_fallback_size;
guint64 overall_usize = total_usize + total_fallback_usize;
g_autofree char *sizestr = g_format_size (overall_size);
g_autofree char *usizestr = g_format_size (overall_usize);
g_print ("Total Size: %" G_GUINT64_FORMAT " (%s)\n", overall_size, sizestr);
g_print ("Total Uncompressed Size: %" G_GUINT64_FORMAT " (%s)\n", overall_usize, usizestr);
}
ret = TRUE;
out:
return ret;
}
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