moved netns code from daemon/src to netns at the top level, updated files to account for location change

netns/vnode_chnl.c

@@ -0,0 +1,117 @@
+/*
+ * CORE
+ * Copyright (c)2010-2012 the Boeing Company.
+ * See the LICENSE file included in this distribution.
+ *
+ * author: Tom Goff <thomas.goff@boeing.com>
+ *
+ * vnode_chnl.c
+ *
+ * Functions for setting up a local UNIX socket to use as a control channel
+ * for interacting with a network namespace.
+ *
+ */
+
+#include <fcntl.h>
+#include <string.h>
+#include <errno.h>
+#include <assert.h>
+
+#include <sys/socket.h>
+#include <sys/un.h>
+
+#include "vnode_msg.h"
+#include "vnode_tlv.h"
+#include "vnode_chnl.h"
+#include "vnode_io.h"
+
+extern int verbose;
+
+
+int vnode_connect(const char *name)
+{
+  int fd;
+  struct sockaddr_un addr;
+
+#ifdef DEBUG
+  WARNX("opening '%s'", name);
+#endif
+
+  if (strlen(name) > sizeof(addr.sun_path) - 1)
+  {
+    WARNX("name too long: '%s'", name);
+    return -1;
+  }
+
+  if ((fd = socket(AF_UNIX, SOCK_SEQPACKET, 0)) < 0)
+  {
+    WARN("socket() failed");
+    return -1;
+  }
+
+  addr.sun_family = AF_UNIX;
+  strcpy(addr.sun_path, name);
+  if (connect(fd, (struct sockaddr *)&addr, sizeof(addr)) < 0)
+  {
+    WARN("connect() failed for '%s'", name);
+    close(fd);
+    return -1;
+  }
+
+  if (set_cloexec(fd))
+    WARN("set_cloexec() failed for fd %d", fd);
+
+  if (set_nonblock(fd))
+    WARN("set_nonblock() failed for fd %d", fd);
+
+  return fd;
+}
+
+int vnode_listen(const char *name)
+{
+  int fd;
+  struct sockaddr_un addr;
+
+#ifdef DEBUG
+  WARNX("opening '%s'", name);
+#endif
+
+  if (strlen(name) > sizeof(addr.sun_path) - 1)
+  {
+    WARNX("name too long: '%s'", name);
+    return -1;
+  }
+
+  if ((fd = socket(AF_UNIX, SOCK_SEQPACKET, 0)) < 0)
+  {
+    WARN("socket() failed");
+    return -1;
+  }
+
+  unlink(name);
+  addr.sun_family = AF_UNIX;
+  strcpy(addr.sun_path, name);
+
+  if (bind(fd, (struct sockaddr *)&addr, sizeof(addr)) < 0)
+  {
+    WARN("bind() failed for '%s'", name);
+    close(fd);
+    return -1;
+  }
+
+  /* to override umask */
+  if (chmod(name, S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH | S_IWOTH))
+    WARN("fchmod() failed for '%s'", name);
+
+  if (listen(fd, 5) < 0)
+  {
+    WARN("listen() failed");
+    close(fd);
+    return -1;
+  }
+
+  if (set_nonblock(fd))
+    WARN("set_nonblock() failed for fd %d", fd);
+
+  return fd;
+}