update from main archive 961001

1 files changed, 108 insertions, 0 deletions

diff --git a/nss/nss_db/db-netgrp.c b/nss/nss_db/db-netgrp.c
new file mode 100644
index 0000000000..441a0bdf55
--- /dev/null
+++ b/nss/nss_db/db-netgrp.c
@@ -0,0 +1,108 @@
+/* Netgroup file parser in nss_db modules.
+Copyright (C) 1996 Free Software Foundation, Inc.
+This file is part of the GNU C Library.
+Contributed by Ulrich Drepper <drepper@cygnus.com>, 1996.
+
+The GNU C Library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public License as
+published by the Free Software Foundation; either version 2 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
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB.  If
+not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+Boston, MA 02111-1307, USA.  */
+
+#include <db.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <libc-lock.h>
+#include <paths.h>
+#include "nsswitch.h"
+#include "netgroup.h"
+
+
+#define DBFILE		_PATH_VARDB "netgroup.db"
+
+
+/* Locks the static variables in this file.  */
+__libc_lock_define_initialized (static, lock)
+
+/* Maintenance of the shared handle open on the database.  */
+static DB *db;
+static char *entry;
+static char *cursor;
+
+enum nss_status
+_nss_db_setnetgrent (const char *group)
+{
+  enum nss_status status = NSS_STATUS_SUCCESS;
+
+  __libc_lock_lock (lock);
+
+  /* Make sure the data base file is open.  */
+  if (db == NULL)
+    {
+      db = dbopen (DBFILE, O_RDONLY, 0, DB_BTREE, NULL);
+
+      if (db == NULL)
+	status = errno = EAGAIN ? NSS_STATUS_TRYAGAIN : NSS_STATUS_UNAVAIL;
+    }
+
+  if (status == NSS_STATUS_SUCCESS)
+    {
+      DBT key = { data: (void *) group, size: strlen (group) };
+      DBT value;
+
+      if ((*db->get) (db, &key, &value, 0) != 0)
+	status = NSS_STATUS_NOTFOUND;
+      else
+	cursor = entry = value.data;
+    }
+
+  __libc_lock_unlock (lock);
+
+  return status;
+
+}
+
+
+enum nss_status
+_nss_db_endnetgrent (void)
+{
+  __libc_lock_lock (lock);
+
+  if (db != NULL)
+    {
+      (*db->close) (db);
+      db = NULL;
+    }
+
+  __libc_lock_unlock (lock);
+
+  return NSS_STATUS_SUCCESS;
+}
+
+
+extern enum nss_status _nss_netgroup_parseline (char **cursor,
+						struct __netgrent *result,
+						char *buffer, int buflen);
+
+enum nss_status
+_nss_db_getnetgrent_r (struct __netgrent *result, char *buffer, int buflen)
+{
+  int status;
+
+  __libc_lock_lock (lock);
+
+  status = _nss_netgroup_parseline (&cursor, result, buffer, buflen);
+
+  __libc_lock_unlock (lock);
+
+  return status;
+}