/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License (the "License").
 * You may not use this file except in compliance with the License.
 *
 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 * or http://www.opensolaris.org/os/licensing.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information: Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 */
/*
 * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */


#include "HBANPIVPort.h"
#include "Exceptions.h"
#include "Trace.h"
#include <iostream>
#include <iomanip>
#include <cerrno>
#include <cstring>
#include <sys/types.h>
#include <sys/mkdev.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
#include <stropts.h>
#include <dirent.h>
#include <libdevinfo.h>

using namespace std;


/**
 * @memo            Construct a new default HBA Port
 * @version         1.7
 */
HBANPIVPort::HBANPIVPort() {
}

/**
 * @memo            Compare two HBA ports for equality
 * @return          TRUE if both ports are the same
 * @return          FALSE if the ports are different
 * @version         1.7
 *
 * @doc             Comparison is based on Node WWN, Port WWN and path
 */
bool HBANPIVPort::operator==(HBANPIVPort &comp) {
        return (this->getPortWWN() == comp.getPortWWN() &&
            this->getNodeWWN() == comp.getNodeWWN());
}

/*
 * Finds controller path for a give device path.
 *
 * Return vale: controller path.
 */
string HBANPIVPort::lookupControllerPath(string path) {
        Trace log("lookupControllerPath");
        DIR     *dp;
        char    buf[MAXPATHLEN];
        char    node[MAXPATHLEN];
        struct dirent   **dirpp, *dirp;
        const char      dir[] = "/dev/cfg";
        ssize_t count;
        uchar_t *dir_buf = new uchar_t[sizeof (struct dirent) + MAXPATHLEN];

        if ((dp = opendir(dir)) == NULL) {
                string tmp = "Unable to open ";
                tmp += dir;
                tmp += "to find controller number.";
                delete[] (dir_buf);
                throw IOError(tmp);
        }

        dirp = (struct dirent *) dir_buf;
        dirpp = &dirp;
        while ((readdir_r(dp, dirp, dirpp)) == 0  && dirp != NULL) {
                if (strcmp(dirp->d_name, ".") == 0 ||
                    strcmp(dirp->d_name, "..") == 0) {
                        continue;
                }
                sprintf(node, "%s/%s", dir, dirp->d_name);
                if ((count = readlink(node,buf,sizeof(buf)))) {
                        buf[count] = '\0';
                        if (strstr(buf, path.c_str())) {
                                string cfg_path = dir;
                                cfg_path += "/";
                                cfg_path += dirp->d_name;
                                closedir(dp);
                                delete[] (dir_buf);
                                return (cfg_path);
                        }
                }
        }

        closedir(dp);
        delete[] (dir_buf);
        throw InternalError("Unable to find controller path");
}