util/m5/src/command/writefile.cc

   1 /*
   2  * Copyright (c) 2003-2005 The Regents of The University of Michigan
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions are
   7  * met: redistributions of source code must retain the above copyright
   8  * notice, this list of conditions and the following disclaimer;
   9  * redistributions in binary form must reproduce the above copyright
  10  * notice, this list of conditions and the following disclaimer in the
  11  * documentation and/or other materials provided with the distribution;
  12  * neither the name of the copyright holders nor the names of its
  13  * contributors may be used to endorse or promote products derived from
  14  * this software without specific prior written permission.
  15  *
  16  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  17  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  18  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  19  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  20  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  21  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  22  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  23  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  24  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  26  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  27  */
  28
  29 #include <errno.h>
  30
  31 #include <cstring>
  32 #include <fstream>
  33 #include <iostream>
  34
  35 #include "args.hh"
  36 #include "command.hh"
  37 #include "dispatch_table.hh"
  38
  39 namespace
  40 {
  41
  42 void
  43 write_file(const DispatchTable &dt, const std::string &filename,
  44            const std::string &host_filename)
  45 {
  46     std::cout << "Opening \"" << filename << "\"." << std::endl;
  47     std::ifstream src(filename, std::ios_base::in | std::ios_base::binary);
  48
  49     if (!src) {
  50         std::cerr << "Error opening \"" << filename << "\": " <<
  51             strerror(errno) << std::endl;
  52         exit(2);
  53     }
  54
  55     char buf[256 * 1024];
  56     int offset = 0;
  57
  58     memset(buf, 0, sizeof(buf));
  59
  60     while (true) {
  61         src.seekg(offset);
  62         src.read(buf, sizeof(buf));
  63         int len = src.gcount();
  64         if (!src && !src.eof()) {
  65             std::cerr << "Error reading \"" << filename << "\": " <<
  66                 strerror(errno) << std::endl;
  67             exit(2);
  68         }
  69         char *wbuf = buf;
  70         while (len) {
  71             int bytes = (*dt.m5_write_file)(
  72                     wbuf, len, offset, host_filename.c_str());
  73             len -= bytes;
  74             offset += bytes;
  75             wbuf += bytes;
  76         }
  77         if (src.eof())
  78             break;
  79     }
  80     std::cout << "Wrote " << offset << " bytes." << std::endl;
  81 }
  82
  83 bool
  84 do_write_file(const DispatchTable &dt, Args &args)
  85 {
  86     const std::string &filename = args.pop();
  87     const std::string &host_filename = args.pop(filename);
  88
  89     write_file(dt, filename, host_filename);
  90
  91     return true;
  92 }
  93
  94 Command write_file_cmd = {
  95     "writefile", 1, 2, do_write_file, "<filename> [host filename]\n"
  96         "        Write a file to the host, optionally with a different "
  97             "name" };
  98
  99 } // anonymous namespace