1 files changed, 67 insertions, 0 deletions
diff --git a/REORG.TODO/nss/nss_db/db-open.c b/REORG.TODO/nss/nss_db/db-open.c
new file mode 100644
index 0000000000..1c58bd1c54
--- /dev/null
+++ b/REORG.TODO/nss/nss_db/db-open.c
@@ -0,0 +1,67 @@
+/* Common database routines for nss_db.
+   Copyright (C) 2000-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C 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 2.1 of the License, or (at your option) any later version.
+
+   The GNU C 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 the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <errno.h>
+#include <fcntl.h>
+#include <dlfcn.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <sys/mman.h>
+#include <not-cancel.h>
+
+#include "nss_db.h"
+
+/* Open the database stored in FILE.  If succesful, store either a
+   pointer to the mapped file or a file handle for the file in H and
+   return NSS_STATUS_SUCCESS.  On failure, return the appropriate
+   lookup status.  */
+enum nss_status
+internal_setent (const char *file, struct nss_db_map *mapping)
+{
+  enum nss_status status = NSS_STATUS_UNAVAIL;
+
+  int fd = open_not_cancel_2 (file, O_RDONLY | O_LARGEFILE | O_CLOEXEC);
+  if (fd != -1)
+    {
+      struct nss_db_header header;
+
+      if (read (fd, &header, sizeof (header)) == sizeof (header))
+	{
+	  mapping->header = mmap (NULL, header.allocate, PROT_READ,
+				  MAP_PRIVATE, fd, 0);
+	  mapping->len = header.allocate;
+	  if (mapping->header != MAP_FAILED)
+	    status = NSS_STATUS_SUCCESS;
+	  else if (errno == ENOMEM)
+	    status = NSS_STATUS_TRYAGAIN;
+	}
+
+      close_not_cancel_no_status (fd);
+    }
+
+  return status;
+}
+
+
+/* Close the database.  */
+void
+internal_endent (struct nss_db_map *mapping)
+{
+  munmap (mapping->header, mapping->len);
+}