usr/src/lib/sun_fc/common/HBANPIVPort.cc

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License (the "License").
   6  * You may not use this file except in compliance with the License.
   7  *
   8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
   9  * or http://www.opensolaris.org/os/licensing.
  10  * See the License for the specific language governing permissions
  11  * and limitations under the License.
  12  *
  13  * When distributing Covered Code, include this CDDL HEADER in each
  14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  15  * If applicable, add the following below this CDDL HEADER, with the
  16  * fields enclosed by brackets "[]" replaced with your own identifying
  17  * information: Portions Copyright [yyyy] [name of copyright owner]
  18  *
  19  * CDDL HEADER END
  20  */
  21 /*
  22  * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
  23  * Use is subject to license terms.
  24  */
  25
  26
  27 #include "HBANPIVPort.h"
  28 #include "Exceptions.h"
  29 #include "Trace.h"
  30 #include <iostream>
  31 #include <iomanip>
  32 #include <cerrno>
  33 #include <cstring>
  34 #include <sys/types.h>
  35 #include <sys/mkdev.h>
  36 #include <sys/stat.h>
  37 #include <fcntl.h>
  38 #include <unistd.h>
  39 #include <stropts.h>
  40 #include <dirent.h>
  41 #include <libdevinfo.h>
  42
  43 using namespace std;
  44
  45
  46 /**
  47  * @memo            Construct a new deafult HBA Port
  48  * @version         1.7
  49  */
  50 HBANPIVPort::HBANPIVPort() {
  51 }
  52
  53 /**
  54  * @memo            Compare two HBA ports for equality
  55  * @return          TRUE if both ports are the same
  56  * @return          FALSE if the ports are different
  57  * @version         1.7
  58  *
  59  * @doc             Comparison is based on Node WWN, Port WWN and path
  60  */
  61 bool HBANPIVPort::operator==(HBANPIVPort &comp) {
  62         return (this->getPortWWN() == comp.getPortWWN() &&
  63             this->getNodeWWN() == comp.getNodeWWN());
  64 }
  65
  66 /*
  67  * Finds controller path for a give device path.
  68  *
  69  * Return vale: controller path.
  70  */
  71 string HBANPIVPort::lookupControllerPath(string path) {
  72         Trace log("lookupControllerPath");
  73         DIR     *dp;
  74         char    buf[MAXPATHLEN];
  75         char    node[MAXPATHLEN];
  76         struct dirent   **dirpp, *dirp;
  77         const char      dir[] = "/dev/cfg";
  78         ssize_t count;
  79         uchar_t *dir_buf = new uchar_t[sizeof (struct dirent) + MAXPATHLEN];
  80
  81         if ((dp = opendir(dir)) == NULL) {
  82                 string tmp = "Unable to open ";
  83                 tmp += dir;
  84                 tmp += "to find controller number.";
  85                 delete (dir_buf);
  86                 throw IOError(tmp);
  87         }
  88
  89         dirp = (struct dirent *) dir_buf;
  90         dirpp = &dirp;
  91         while ((readdir_r(dp, dirp, dirpp)) == 0  && dirp != NULL) {
  92                 if (strcmp(dirp->d_name, ".") == 0 ||
  93                     strcmp(dirp->d_name, "..") == 0) {
  94                         continue;
  95                 }
  96                 sprintf(node, "%s/%s", dir, dirp->d_name);
  97                 if ((count = readlink(node,buf,sizeof(buf)))) {
  98                         buf[count] = '\0';
  99                         if (strstr(buf, path.c_str())) {
 100                                 string cfg_path = dir;
 101                                 cfg_path += "/";
 102                                 cfg_path += dirp->d_name;
 103                                 closedir(dp);
 104                                 delete (dir_buf);
 105                                 return (cfg_path);
 106                         }
 107                 }
 108         }
 109
 110         closedir(dp);
 111         delete (dir_buf);
 112         throw InternalError("Unable to find controller path");
 113 }
 114