Added all files

1 files changed, 339 insertions, 0 deletions

diff --git a/libglusterfs/src/transport.c b/libglusterfs/src/transport.c
new file mode 100644
index 00000000000..8bd4ff010a4
--- /dev/null
+++ b/libglusterfs/src/transport.c
@@ -0,0 +1,339 @@
+/*
+  Copyright (c) 2006, 2007, 2008 Z RESEARCH, Inc. <http://www.zresearch.com>
+  This file is part of GlusterFS.
+
+  GlusterFS 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 3 of the License,
+  or (at your option) any later version.
+
+  GlusterFS 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, see
+  <http://www.gnu.org/licenses/>.
+*/
+
+#include <dlfcn.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <sys/poll.h>
+#include <fnmatch.h>
+#include <stdint.h>
+
+#ifndef _CONFIG_H
+#define _CONFIG_H
+#include "config.h"
+#endif
+
+#include "logging.h"
+#include "transport.h"
+#include "glusterfs.h"
+#include "xlator.h"
+#include "list.h"
+
+
+transport_t *
+transport_load (dict_t *options,
+		xlator_t *xl)
+{
+	struct transport *trans = NULL, *return_trans = NULL;
+	char *addr_family = NULL;
+	char *name = NULL;
+	void *handle = NULL;
+	char *type = NULL;
+	char str[] = "ERROR";
+	int32_t ret = -1;
+	int8_t is_tcp = 0, is_unix = 0, is_ibsdp = 0;
+	volume_opt_list_t *vol_opt = NULL;
+
+	GF_VALIDATE_OR_GOTO("transport", options, fail);
+	GF_VALIDATE_OR_GOTO("transport", xl, fail);
+  
+	trans = CALLOC (1, sizeof (struct transport));
+	GF_VALIDATE_OR_GOTO("transport", trans, fail);
+
+	trans->xl = xl;
+	type = str;
+
+	/* Backward compatibility */
+	ret = dict_get_str (options, "transport-type", &type);
+	if (ret < 0) {
+		ret = dict_set_str (options, "transport-type", "socket");
+		if (ret < 0)
+			gf_log ("dict", GF_LOG_DEBUG,
+				"setting transport-type failed");
+		ret = dict_get_str (options, "transport.address-family",
+				    &addr_family);
+		if (ret < 0) {
+			ret = dict_get_str (options, "address-family",
+					    &addr_family);
+		}
+
+		if (ret < 0) {
+			ret = dict_set_str (options,
+					    "transport.address-family",
+					    "inet");
+			if (ret < 0) {
+				gf_log ("dict", GF_LOG_ERROR,
+					"setting address-family failed");
+			}
+		}
+
+		gf_log ("transport", GF_LOG_WARNING,
+			"missing 'option transport-type'. defaulting to "
+			"\"socket\" (%s)", addr_family?addr_family:"inet");
+	} else {
+		{
+			/* Backword compatibility to handle * /client,
+			 * * /server. 
+			 */
+			char *tmp = strchr (type, '/');
+			if (tmp)
+				*tmp = '\0';
+		}
+		
+		is_tcp = strcmp (type, "tcp");
+		is_unix = strcmp (type, "unix");
+		is_ibsdp = strcmp (type, "ib-sdp");
+		if ((is_tcp == 0) ||
+		    (is_unix == 0) ||
+		    (is_ibsdp == 0)) {
+			if (is_tcp == 0)
+				ret = dict_set_str (options, 
+						    "transport.address-family",
+						    "inet");
+			if (is_unix == 0)
+				ret = dict_set_str (options, 
+						    "transport.address-family",
+						    "unix");
+			if (is_ibsdp == 0)
+				ret = dict_set_str (options, 
+						    "transport.address-family",
+						    "inet-sdp");
+
+			if (ret < 0)
+				gf_log ("dict", GF_LOG_DEBUG,
+					"setting address-family failed");
+
+			ret = dict_set_str (options, 
+					    "transport-type", "socket");
+			if (ret < 0)
+				gf_log ("dict", GF_LOG_DEBUG,
+					"setting transport-type failed");
+		}
+	}
+
+	ret = dict_get_str (options, "transport-type", &type);
+	if (ret < 0) {
+		FREE (trans);
+		gf_log ("transport", GF_LOG_ERROR,
+			"'option transport-type <xx>' missing in volume '%s'",
+			xl->name);
+		goto fail;
+	}
+
+	asprintf (&name, "%s/%s.so", TRANSPORTDIR, type);
+	gf_log ("transport", GF_LOG_DEBUG,
+		"attempt to load file %s", name);
+
+	handle = dlopen (name, RTLD_NOW|RTLD_GLOBAL);
+	if (handle == NULL) {
+		gf_log ("transport", GF_LOG_ERROR, "%s", dlerror ());
+		gf_log ("transport", GF_LOG_ERROR,
+			"volume '%s': transport-type '%s' is not valid or "
+			"not found on this machine", 
+			xl->name, type);
+		FREE (name);
+		FREE (trans);
+		goto fail;
+	}
+	FREE (name);
+	
+	trans->ops = dlsym (handle, "tops");
+	if (trans->ops == NULL) {
+		gf_log ("transport", GF_LOG_ERROR,
+			"dlsym (transport_ops) on %s", dlerror ());
+		FREE (trans);
+		goto fail;
+	}
+
+	trans->init = dlsym (handle, "init");
+	if (trans->init == NULL) {
+		gf_log ("transport", GF_LOG_ERROR,
+			"dlsym (gf_transport_init) on %s", dlerror ());
+		FREE (trans);
+		goto fail;
+	}
+
+	trans->fini = dlsym (handle, "fini");
+	if (trans->fini == NULL) {
+		gf_log ("transport", GF_LOG_ERROR,
+			"dlsym (gf_transport_fini) on %s", dlerror ());
+		FREE (trans);
+		goto fail;
+	}
+	
+	vol_opt = CALLOC (1, sizeof (volume_opt_list_t));
+	vol_opt->given_opt = dlsym (handle, "options");
+	if (vol_opt->given_opt == NULL) {
+		gf_log ("transport", GF_LOG_DEBUG,
+			"volume option validation not specified");
+	} else {
+		list_add_tail (&vol_opt->list, &xl->volume_options);
+		if (-1 == 
+		    validate_xlator_volume_options (xl, 
+						    vol_opt->given_opt)) {
+			gf_log ("transport", GF_LOG_ERROR,
+				"volume option validation failed");
+			FREE (trans);
+			goto fail;
+		}
+	}
+	
+	ret = trans->init (trans);
+	if (ret != 0) {
+		gf_log ("transport", GF_LOG_ERROR,
+			"'%s' initialization failed", type);
+		FREE (trans);
+		goto fail;
+	}
+
+	pthread_mutex_init (&trans->lock, NULL);
+	return_trans = trans;
+fail:
+	return return_trans;
+}
+
+
+int32_t 
+transport_submit (transport_t *this, char *buf, int32_t len,
+		  struct iovec *vector, int count, dict_t *refs)
+{
+	int32_t ret = -1;
+
+	GF_VALIDATE_OR_GOTO("transport", this, fail);
+	GF_VALIDATE_OR_GOTO("transport", this->ops, fail);
+	
+	ret = this->ops->submit (this, buf, len, vector, count, refs);
+fail:
+	return ret;
+}
+
+
+int32_t 
+transport_connect (transport_t *this)
+{
+	int ret = -1;
+	
+	GF_VALIDATE_OR_GOTO("transport", this, fail);
+  
+	ret = this->ops->connect (this);
+fail:
+	return ret;
+}
+
+
+int32_t
+transport_listen (transport_t *this)
+{
+	int ret = -1;
+	
+	GF_VALIDATE_OR_GOTO("transport", this, fail);
+  
+	ret = this->ops->listen (this);
+fail:
+	return ret;
+}
+
+
+int32_t 
+transport_disconnect (transport_t *this)
+{
+	int32_t ret = -1;
+	
+	GF_VALIDATE_OR_GOTO("transport", this, fail);
+  
+	ret = this->ops->disconnect (this);
+fail:
+	return ret;
+}
+
+
+int32_t 
+transport_destroy (transport_t *this)
+{
+	int32_t ret = -1;
+
+	GF_VALIDATE_OR_GOTO("transport", this, fail);
+  
+	if (this->fini)
+		this->fini (this);
+
+	pthread_mutex_destroy (&this->lock);
+	FREE (this);
+fail:
+	return ret;
+}
+
+
+transport_t *
+transport_ref (transport_t *this)
+{
+	transport_t *return_this = NULL;
+
+	GF_VALIDATE_OR_GOTO("transport", this, fail);
+	
+	pthread_mutex_lock (&this->lock);
+	{
+		this->refcount ++;
+	}
+	pthread_mutex_unlock (&this->lock);
+	
+	return_this = this;
+fail:
+	return return_this;
+}
+
+
+int32_t
+transport_receive (transport_t *this, char **hdr_p, size_t *hdrlen_p,
+		   char **buf_p, size_t *buflen_p)
+{
+	int32_t ret = -1;
+
+	GF_VALIDATE_OR_GOTO("transport", this, fail);
+  
+	ret = this->ops->receive (this, hdr_p, hdrlen_p, buf_p, buflen_p);
+fail:
+	return ret;
+}
+
+
+int32_t
+transport_unref (transport_t *this)
+{
+	int32_t refcount = 0;
+	int32_t ret = -1;
+
+	GF_VALIDATE_OR_GOTO("transport", this, fail);
+  
+	pthread_mutex_lock (&this->lock);
+	{
+		refcount = --this->refcount;
+	}
+	pthread_mutex_unlock (&this->lock);
+
+	if (refcount == 0) {
+		this->xl->notify (this->xl, GF_EVENT_TRANSPORT_CLEANUP, this);
+		transport_destroy (this);
+	}
+	
+	ret = 0;
+fail:
+	return ret;
+}
+