sun_fc/common/HBANPIVPort.cc

/*
 * 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 deafult 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");
}