1 files changed, 73 insertions, 0 deletions
diff --git a/lib/dpkg/nfmalloc.c b/lib/dpkg/nfmalloc.c
new file mode 100644
index 0000000..d076351
--- /dev/null
+++ b/lib/dpkg/nfmalloc.c
@@ -0,0 +1,73 @@
+/*
+ * libdpkg - Debian packaging suite library routines
+ * nfmalloc.c - non-freeing malloc, used for in-core database
+ *
+ * Copyright © 1994,1995 Ian Jackson <ijackson@chiark.greenend.org.uk>
+ *
+ * This is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <config.h>
+#include <compat.h>
+
+#include <string.h>
+#include <stdlib.h>
+#include <obstack.h>
+
+#include <dpkg/i18n.h>
+#include <dpkg/dpkg.h>
+#include <dpkg/dpkg-db.h>
+
+#define obstack_chunk_alloc m_malloc
+#define obstack_chunk_free free
+
+static struct obstack db_obs;
+static bool dbobs_init = false;
+
+/* We use lots of mem, so use a large chunk. */
+#define CHUNK_SIZE 8192
+
+#define OBSTACK_INIT if (!dbobs_init) { nfobstack_init(); }
+
+static void nfobstack_init(void) {
+  obstack_init(&db_obs);
+  dbobs_init = true;
+  obstack_chunk_size(&db_obs) = CHUNK_SIZE;
+}
+
+void *
+nfmalloc(size_t size)
+{
+  OBSTACK_INIT;
+  return obstack_alloc(&db_obs, size);
+}
+
+char *nfstrsave(const char *string) {
+  OBSTACK_INIT;
+  return obstack_copy0 (&db_obs, string, strlen(string));
+}
+
+char *
+nfstrnsave(const char *string, size_t size)
+{
+  OBSTACK_INIT;
+  return obstack_copy0(&db_obs, string, size);
+}
+
+void nffreeall(void) {
+  if (dbobs_init) {
+    obstack_free(&db_obs, NULL);
+    dbobs_init = false;
+  }
+}