[ostree] prune: delete all cached summaries files

[Giuseppe Scrivano <gscrivano src gnome org>]

commit cff4e48d02303d49c813c1d628fe73a13bc3f024
Author: Giuseppe Scrivano <gscrivan redhat com>
Date:   Fri Mar 11 12:59:18 2016 +0100

    prune: delete all cached summaries files
    
    Signed-off-by: Giuseppe Scrivano <gscrivan redhat com>

 src/libostree/ostree-repo-prune.c |   65 +++++++++++++++++++++++++++++++++++++
 1 files changed, 65 insertions(+), 0 deletions(-)
---
diff --git a/src/libostree/ostree-repo-prune.c b/src/libostree/ostree-repo-prune.c
index 166e67e..3384883 100644
--- a/src/libostree/ostree-repo-prune.c
+++ b/src/libostree/ostree-repo-prune.c
@@ -112,6 +112,68 @@ maybe_prune_loose_object (OtPruneData        *data,
   return ret;
 }
 
+static gboolean
+_ostree_repo_prune_tmp (OstreeRepo *self,
+                        GCancellable *cancellable,
+                        GError **error)
+{
+  gboolean ret = FALSE;
+  g_auto(GLnxDirFdIterator) dfd_iter = { 0, };
+  glnx_fd_close int fd = -1;
+
+  fd = glnx_opendirat_with_errno (self->repo_dir_fd, _OSTREE_SUMMARY_CACHE_PATH, FALSE);
+  if (fd < 0)
+    {
+      if (errno == ENOENT)
+        ret = TRUE;
+      else
+        glnx_set_error_from_errno (error);
+      goto out;
+    }
+
+  if (!glnx_dirfd_iterator_init_take_fd (dup (fd), &dfd_iter, error))
+    goto out;
+
+  while (TRUE)
+    {
+      size_t len;
+      gboolean has_sig_suffix = FALSE;
+      struct dirent *dent;
+
+      if (!glnx_dirfd_iterator_next_dent (&dfd_iter, &dent, cancellable, error))
+        goto out;
+
+      if (dent == NULL)
+        break;
+
+      len = strlen (dent->d_name);
+      if (len > 4 && g_strcmp0 (dent->d_name + len - 4, ".sig") == 0)
+        {
+          has_sig_suffix = TRUE;
+          dent->d_name[len - 4] = '\0';
+        }
+
+      if (!g_hash_table_contains (self->remotes, dent->d_name))
+        {
+          /* Restore the previous value to get the file name.  */
+          if (has_sig_suffix)
+            dent->d_name[len - 4] = '.';
+
+          if (unlinkat (fd, dent->d_name, 0) < 0)
+            {
+              glnx_set_error_from_errno (error);
+              goto out;
+            }
+        }
+    }
+
+  ret = TRUE;
+
+ out:
+  return ret;
+}
+
+
 /**
  * ostree_repo_prune_static_deltas:
  * @self: Repo
@@ -295,6 +357,9 @@ ostree_repo_prune (OstreeRepo        *self,
   if (!ostree_repo_prune_static_deltas (self, NULL, cancellable, error))
     goto out;
 
+  if (!_ostree_repo_prune_tmp (self, cancellable, error))
+    goto out;
+
   ret = TRUE;
   *out_objects_total = (data.n_reachable_meta + data.n_unreachable_meta +
                         data.n_reachable_content + data.n_unreachable_content);