• Main Page
  • Related Pages
  • Namespaces
  • Classes
  • Files
  • File List
  • File Members

SmbiosStrategy_Linux.cpp

Go to the documentation of this file.
00001 /* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
00002  * vim:expandtab:autoindent:tabstop=4:shiftwidth=4:filetype=c:cindent:textwidth=0:
00003  *
00004  * Copyright (C) 2005 Dell Inc.
00005  *  by Michael Brown <Michael_E_Brown@dell.com>
00006  * Licensed under the Open Software License version 2.1
00007  *
00008  * Alternatively, you can redistribute it and/or modify
00009  * it under the terms of the GNU General Public License as published
00010  * by the Free Software Foundation; either version 2 of the License,
00011  * or (at your option) any later version.
00012 
00013  * This program is distributed in the hope that it will be useful, but
00014  * WITHOUT ANY WARRANTY; without even the implied warranty of
00015  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
00016  * See the GNU General Public License for more details.
00017  */
00018 
00019 // compat header should always be first header if including system headers
00020 #define LIBSMBIOS_SOURCE
00021 #include "smbios/compat.h"
00022 
00023 #include <cstdio>
00024 #include <sstream>
00025 #include <string.h>
00026 
00027 #include "smbios/IMemory.h"
00028 #include "SmbiosImpl.h"
00029 
00030 // message.h should be included last.
00031 #include "smbios/message.h"
00032 
00033 using namespace smbiosLowlevel;
00034 using namespace std;
00035 
00036 #if defined(DEBUG_SMBIOS_STRATEGY)
00037 #   define DCOUT(line) do { cout << line; } while(0)
00038 #   define DCERR(line) do { cerr << line; } while(0)
00039 #else
00040 #   define DCOUT(line) do {} while(0)
00041 #   define DCERR(line) do {} while(0)
00042 #endif
00043 
00044 #if 1
00045 #define EFIVARS_FILE_le266 "/proc/efi/systab"
00046 #define EFIVARS_FILE_gt266 "/sys/firmware/efi/systab"
00047 #else
00048 // for debugging
00049 #define EFIVARS_FILE_le266 "/home/michael_e_brown/cc/libsmbios_proj/libsmbios/foo.txt"
00050 #define EFIVARS_FILE_gt266 "/home/michael_e_brown/cc/libsmbios_proj/libsmbios/foo.txt"
00051 #endif
00052 
00053 namespace smbios
00054 {
00055     // allocates no memory, constructs no objects.
00056     // can raise an exception
00057     void SmbiosLinuxEFIStrategy::getSmbiosTableHeader(smbiosLowlevel::smbios_table_entry_point *table_header, bool strict)
00058     {
00059         ParseExceptionImpl parseException;
00060             parseException.setMessageString(_("EFI support not found"));
00061 
00062         FILE *fh = NULL;
00063         if ( (fh=fopen(EFIVARS_FILE_le266, "r")) == NULL  &&
00064              (fh=fopen(EFIVARS_FILE_gt266, "r")) == NULL)
00065             throw(parseException);
00066 
00067         DCERR("Found EFI systab. Reading offset..." << endl);
00068 
00069         // read lines
00070         char line[256] = {0,};
00071         while(NULL != fgets(line, sizeof(line)-1, fh))
00072         {
00073             char *varName=line;
00074             char *varValue=line;
00075             varValue = strchr(line, '=');
00076             if(!varValue)
00077                 continue;
00078 
00079             *(varValue++) = '\0';
00080             if (0 == strcmp(varName, "SMBIOS"))
00081             {
00082                 // offset is in parent class and locks down header
00083                 // to only search at specified offset
00084                 offset = strtol(varValue, NULL, 0);
00085                 DCERR("Found SMBIOS address: " << hex << offset << "." << endl);
00086             }
00087         }
00088         fclose(fh);
00089 
00090         if(offset)
00091             SmbiosMemoryStrategy::getSmbiosTableHeader(table_header, strict);
00092         else
00093             throw(parseException);
00094 
00095         DCERR("Parsed SMBIOS table." << endl);
00096     }
00097 }

Generated on Sun Aug 22 2010 14:38:30 for SMBIOS Library by  doxygen 1.7.1