/**
* glnx_dirfd_iterator_init_at:
* @dfd: File descriptor, may be AT_FDCWD or -1
* @path: Path, may be relative to @df
* @follow: If %TRUE and the last component of @path is a symlink, follow it
* @out_dfd_iter: (out caller-allocates): A directory iterator, will be initialized
* @error: Error
*
* Initialize @out_dfd_iter from @dfd and @path.
*/
gboolean
glnx_dirfd_iterator_init_at (int dfd,
const char *path,
gboolean follow,
GLnxDirFdIterator *out_dfd_iter,
GError **error)
{
gboolean ret = FALSE;
glnx_fd_close int fd = -1;
if (!glnx_opendirat (dfd, path, follow, &fd, error))
goto out;
if (!glnx_dirfd_iterator_init_take_fd (fd, out_dfd_iter, error))
goto out;
fd = -1; /* Transfer ownership */
ret = TRUE;
out:
return ret;
}
/**
* 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)
{
g_autoptr(GPtrArray) ret_deltas = NULL;
glnx_fd_close int dfd = -1;
ret_deltas = g_ptr_array_new_with_free_func (g_free);
dfd = glnx_opendirat_with_errno (self->repo_dir_fd, "deltas", TRUE);
if (dfd < 0)
{
if (errno != ENOENT)
{
glnx_set_error_from_errno (error);
return FALSE;
}
}
else
{
g_auto(GLnxDirFdIterator) dfd_iter = { 0, };
if (!glnx_dirfd_iterator_init_take_fd (dfd, &dfd_iter, error))
return FALSE;
dfd = -1;
while (TRUE)
{
g_auto(GLnxDirFdIterator) sub_dfd_iter = { 0, };
struct dirent *dent;
if (!glnx_dirfd_iterator_next_dent_ensure_dtype (&dfd_iter, &dent, cancellable, error))
return FALSE;
if (dent == NULL)
break;
if (dent->d_type != DT_DIR)
continue;
if (!glnx_dirfd_iterator_init_at (dfd_iter.fd, dent->d_name, FALSE,
&sub_dfd_iter, error))
return FALSE;
while (TRUE)
{
struct dirent *sub_dent;
const char *name1;
const char *name2;
g_autofree char *superblock_subpath = NULL;
struct stat stbuf;
if (!glnx_dirfd_iterator_next_dent_ensure_dtype (&sub_dfd_iter, &sub_dent,
cancellable, error))
return FALSE;
if (sub_dent == NULL)
break;
if (dent->d_type != DT_DIR)
continue;
name1 = dent->d_name;
name2 = sub_dent->d_name;
superblock_subpath = g_strconcat (name2, "/superblock", NULL);
if (fstatat (sub_dfd_iter.fd, superblock_subpath, &stbuf, 0) < 0)
{
if (errno != ENOENT)
{
glnx_set_error_from_errno (error);
return FALSE;
}
}
else
{
g_autofree char *buf = g_strconcat (name1, name2, NULL);
GString *out = g_string_new ("");
char checksum[OSTREE_SHA256_STRING_LEN+1];
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));
}
}
}
}
if (out_deltas)
*out_deltas = g_steal_pointer (&ret_deltas);
return TRUE;
}
gboolean
_ostree_sysroot_read_boot_loader_configs (OstreeSysroot *self,
int bootversion,
GPtrArray **out_loader_configs,
GCancellable *cancellable,
GError **error)
{
gboolean ret = FALSE;
int fd; /* Temporary owned by iterator */
g_autofree char *entries_path = g_strdup_printf ("boot/loader.%d/entries", bootversion);
g_autoptr(GPtrArray) ret_loader_configs = NULL;
g_auto(GLnxDirFdIterator) dfd_iter = { 0, };
if (!ensure_sysroot_fd (self, error))
goto out;
ret_loader_configs = g_ptr_array_new_with_free_func ((GDestroyNotify)g_object_unref);
fd = glnx_opendirat_with_errno (self->sysroot_fd, entries_path, TRUE);
if (fd == -1)
{
if (errno == ENOENT)
goto done;
else
{
glnx_set_error_from_errno (error);
goto out;
}
}
if (!glnx_dirfd_iterator_init_take_fd (fd, &dfd_iter, error))
goto out;
while (TRUE)
{
struct dirent *dent;
struct stat stbuf;
if (!glnx_dirfd_iterator_next_dent (&dfd_iter, &dent, cancellable, error))
goto out;
if (dent == NULL)
break;
if (fstatat (dfd_iter.fd, dent->d_name, &stbuf, 0) != 0)
{
glnx_set_error_from_errno (error);
goto out;
}
if (g_str_has_prefix (dent->d_name, "ostree-") &&
g_str_has_suffix (dent->d_name, ".conf") &&
S_ISREG (stbuf.st_mode))
{
glnx_unref_object OstreeBootconfigParser *config = ostree_bootconfig_parser_new ();
if (!ostree_bootconfig_parser_parse_at (config, dfd_iter.fd, dent->d_name, cancellable, error))
{
g_prefix_error (error, "Parsing %s: ", dent->d_name);
goto out;
}
g_ptr_array_add (ret_loader_configs, g_object_ref (config));
}
}
done:
gs_transfer_out_value (out_loader_configs, &ret_loader_configs);
ret = TRUE;
out:
return ret;
}
