[rtems-libbsd commit] Added __res_state to user space.
Jennifer Averett
jennifer at rtems.org
Wed Sep 12 19:01:25 UTC 2012
Module: rtems-libbsd
Branch: master
Commit: 8c92f71d9aa53ba7955d0ec871a4915ee484a367
Changeset: http://git.rtems.org/rtems-libbsd/commit/?id=8c92f71d9aa53ba7955d0ec871a4915ee484a367
Author: Jennifer Averett <jennifer.averett at oarcorp.com>
Date: Wed Sep 12 14:05:27 2012 -0500
Added __res_state to user space.
---
freebsd-userspace/Makefile | 1 +
freebsd-userspace/lib/libc/resolv/res_state.c | 89 +++++++++++++++++++++++++
2 files changed, 90 insertions(+), 0 deletions(-)
diff --git a/freebsd-userspace/Makefile b/freebsd-userspace/Makefile
index 5a0786b..7055f0a 100644
--- a/freebsd-userspace/Makefile
+++ b/freebsd-userspace/Makefile
@@ -82,6 +82,7 @@ C_FILES += lib/libc/resolv/res_mkquery.c
C_FILES += lib/libc/resolv/res_mkupdate.c
C_FILES += lib/libc/resolv/res_query.c
C_FILES += lib/libc/resolv/res_send.c
+C_FILES += lib/libc/resolv/res_state.c
C_FILES += lib/libc/resolv/res_update.c
C_FILES += lib/libc/string/strsep.c
diff --git a/freebsd-userspace/lib/libc/resolv/res_state.c b/freebsd-userspace/lib/libc/resolv/res_state.c
new file mode 100644
index 0000000..dc77a9c
--- /dev/null
+++ b/freebsd-userspace/lib/libc/resolv/res_state.c
@@ -0,0 +1,89 @@
+#include "port_before.h"
+
+/*-
+ * Copyright (c) 2006 The FreeBSD Project. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * $FreeBSD$
+ */
+
+#include <sys/types.h>
+#include <netinet/in.h>
+#include <arpa/nameser.h>
+#include <resolv.h>
+#include <stdlib.h>
+
+#include "namespace.h"
+#include "reentrant.h"
+#include "un-namespace.h"
+
+#undef _res
+
+struct __res_state _res;
+
+static thread_key_t res_key;
+static once_t res_init_once = ONCE_INITIALIZER;
+static int res_thr_keycreated = 0;
+
+static void
+free_res(void *ptr)
+{
+ res_state statp = ptr;
+
+ if (statp->_u._ext.ext != NULL)
+ res_ndestroy(statp);
+ free(statp);
+}
+
+static void
+res_keycreate(void)
+{
+ res_thr_keycreated = thr_keycreate(&res_key, free_res) == 0;
+}
+
+res_state
+__res_state(void)
+{
+ res_state statp;
+
+ if (thr_main() != 0)
+ return (&_res);
+
+ if (thr_once(&res_init_once, res_keycreate) != 0 ||
+ !res_thr_keycreated)
+ return (&_res);
+
+ statp = thr_getspecific(res_key);
+ if (statp != NULL)
+ return (statp);
+ statp = calloc(1, sizeof(*statp));
+ if (statp == NULL)
+ return (&_res);
+#ifdef __BIND_RES_TEXT
+ statp->options = RES_TIMEOUT; /* Motorola, et al. */
+#endif
+ if (thr_setspecific(res_key, statp) == 0)
+ return (statp);
+ free(statp);
+ return (&_res);
+}
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