intial checkin of the libosmocore project
diff --git a/src/msgb.c b/src/msgb.c
new file mode 100644
index 0000000..2521ca8
--- /dev/null
+++ b/src/msgb.c
@@ -0,0 +1,98 @@
+/* (C) 2008 by Harald Welte <laforge@gnumonks.org>
+ * All Rights Reserved
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ */
+
+
+#include <unistd.h>
+#include <string.h>
+#include <stdlib.h>
+#include <sys/types.h>
+
+#include <osmocore/msgb.h>
+//#include <openbsc/gsm_data.h>
+#include <osmocore/talloc.h>
+//#include <openbsc/debug.h>
+
+void *tall_msgb_ctx;
+
+struct msgb *msgb_alloc(uint16_t size, const char *name)
+{
+ struct msgb *msg;
+
+ msg = _talloc_zero(tall_msgb_ctx, sizeof(*msg) + size, name);
+
+ if (!msg) {
+ //LOGP(DRSL, LOGL_FATAL, "unable to allocate msgb\n");
+ return NULL;
+ }
+
+ msg->data_len = size;
+ msg->len = 0;
+ msg->data = msg->_data;
+
+ msg->head = msg->data;
+ msg->data = msg->data;
+ /* reset tail pointer */
+ msg->tail = msg->data;
+ //msg->end = msg->tail + size;
+
+ return msg;
+}
+
+void msgb_free(struct msgb *m)
+{
+ talloc_free(m);
+}
+
+void msgb_enqueue(struct llist_head *queue, struct msgb *msg)
+{
+ llist_add_tail(&msg->list, queue);
+}
+
+struct msgb *msgb_dequeue(struct llist_head *queue)
+{
+ struct llist_head *lh;
+
+ if (llist_empty(queue))
+ return NULL;
+
+ lh = queue->next;
+ llist_del(lh);
+
+ return llist_entry(lh, struct msgb, list);
+}
+
+void msgb_reset(struct msgb *msg)
+{
+ msg->len = 0;
+ msg->len = 0;
+ msg->data = msg->_data;
+
+ msg->head = msg->data;
+ msg->data = msg->data;
+ /* reset tail pointer */
+ msg->tail = msg->data;
+
+ /* reset pointers */
+ msg->bts_link = NULL;
+ msg->trx = NULL;
+ msg->lchan = NULL;
+ msg->l2h = NULL;
+ msg->l3h = NULL;
+ msg->smsh = NULL;
+}