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-rw-r--r--src/plugins/linux-cp/lcp.c85
1 files changed, 85 insertions, 0 deletions
diff --git a/src/plugins/linux-cp/lcp.c b/src/plugins/linux-cp/lcp.c
new file mode 100644
index 00000000000..f4c491c9cb3
--- /dev/null
+++ b/src/plugins/linux-cp/lcp.c
@@ -0,0 +1,85 @@
+/*
+ * Copyright (c) 2020 Cisco and/or its affiliates.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <sched.h>
+#include <fcntl.h>
+#include <ctype.h>
+#include <sys/socket.h>
+#include <net/if.h>
+
+#include <plugins/linux-cp/lcp.h>
+
+lcp_main_t lcp_main;
+
+u8 *
+lcp_get_default_ns (void)
+{
+ lcp_main_t *lcpm = &lcp_main;
+
+ if (lcpm->default_namespace[0] == 0)
+ return 0;
+ return lcpm->default_namespace;
+}
+
+int
+lcp_get_default_ns_fd (void)
+{
+ lcp_main_t *lcpm = &lcp_main;
+
+ return lcpm->default_ns_fd;
+}
+
+/*
+ * ns is expected to be or look like a NUL-terminated C string.
+ */
+int
+lcp_set_default_ns (u8 *ns)
+{
+ lcp_main_t *lcpm = &lcp_main;
+ char *p;
+ int len;
+ u8 *s;
+
+ p = (char *) ns;
+ len = clib_strnlen (p, LCP_NS_LEN);
+ if (len >= LCP_NS_LEN)
+ return -1;
+
+ if (!p || *p == 0)
+ {
+ clib_memset (lcpm->default_namespace, 0,
+ sizeof (lcpm->default_namespace));
+ if (lcpm->default_ns_fd > 0)
+ close (lcpm->default_ns_fd);
+ lcpm->default_ns_fd = 0;
+ return 0;
+ }
+
+ clib_strncpy ((char *) lcpm->default_namespace, p, LCP_NS_LEN - 1);
+
+ s = format (0, "/var/run/netns/%s%c", (char *) lcpm->default_namespace, 0);
+ lcpm->default_ns_fd = open ((char *) s, O_RDONLY);
+ vec_free (s);
+
+ return 0;
+}
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */