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pascal@13974
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1 #include <windows.h>
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2 #include <winnt.h>
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3 #include <sys/types.h>
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4 #include <sys/stat.h>
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5 #include <fcntl.h>
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6
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7 #define BOOTSTRAP_SECTOR_COUNT_OFFSET 28
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8
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9 static int fullread(int fd, char *p, int n)
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10 {
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11 int i, j;
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12 for (i = 0; n > 0; i += j, n -= j) {
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13 j = read(fd, p + i, n);
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14 if (j <= 0) break;
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15 }
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16 return i;
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17 #define read fullread
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18 }
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19
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20 static int fullwrite(int fd, char *p, int n)
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21 {
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22 int i, j;
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23 for (i = 0; n > 0; i += j, n -= j) {
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24 j = write(fd, p + i, n);
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25 if (j <= 0) break;
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26 }
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27 return i;
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28 #define write fullwrite
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29 }
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30
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31 static void exec16bits(char *isoFileName)
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32 {
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33 int fdiso, fdtmp, i;
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34 long buffer[512/4];
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35 char tmpFileName[MAX_PATH], *p;
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36
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37 strcpy(tmpFileName, isoFileName);
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38 p = strrchr(tmpFileName, '\\');
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39 if (!p++) p = tmpFileName;
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40 strcpy(p, "tazboot.exe");
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41 fdiso = open(isoFileName, O_RDONLY|O_BINARY);
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42 fdtmp = open(tmpFileName, O_WRONLY|O_BINARY|O_CREAT,0555);
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43 for (i = 0; i < 0x8000; i += sizeof(buffer)) {
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44 read(fdiso, (char *) buffer, sizeof(buffer));
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45 if (i == 0) buffer[15] = 0; // kill PE header
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46 write(fdtmp, (char *) buffer, sizeof(buffer));
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47 }
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48 close(fdiso);
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49 close(fdtmp);
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50 execl(tmpFileName, isoFileName);
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51 }
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52
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53 static int iswinnt(void)
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54 {
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55 OSVERSIONINFOA Version;
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56 Version.dwOSVersionInfoSize = sizeof(Version);
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57 return (GetVersionEx(&Version) &&
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58 Version.dwPlatformId != VER_PLATFORM_WIN32_WINDOWS); // not Win9x
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59 }
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60
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61 static int ishybrid(char *isoFileName)
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62 {
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63 int fdiso;
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64 char buffer[2048];
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65 unsigned long magic = 0;
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66
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67 fdiso = open(isoFileName, O_RDONLY|O_BINARY);
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68 if (lseek(fdiso, 17 * 2048L, SEEK_SET) != -1 &&
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69 read(fdiso, buffer, 2048) == 2048 &&
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70 strncmp(buffer+7,"EL TORITO SPECIFICATION",23) == 0) {
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71 unsigned long lba = * (unsigned long *) (buffer + 71);
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72
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73 if (lseek(fdiso, lba * 2048L, SEEK_SET) != -1 &&
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74 read(fdiso, buffer, 2048) == 2048 &&
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75 * (unsigned long *) (buffer + 0) == 1 &&
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76 * (unsigned long *) (buffer + 30) == 0x88AA55) {
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77 lba = * (unsigned long *) (buffer + 40);
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78 if (lseek(fdiso, lba * 2048L, SEEK_SET) != -1 &&
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79 read(fdiso, buffer, 2048) == 2048)
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80 magic = * (unsigned long *) (buffer + 64);
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81 }
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82 }
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83 close(fdiso);
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84 return (magic == 1886961915);
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85 }
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86
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87 static char buffer[512];
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88
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89 #define MODE_READ 0
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90 #define MODE_WRITE 1
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91 static int rdwrsector(int mode, int drive, unsigned long startingsector)
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92 {
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93 HANDLE hDevice;
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94 DWORD result;
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95 char devname[sizeof("\\\\.\\PhysicalDrive0")];
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96
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97 if (drive >= 128) {
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98 strcpy(devname, "\\\\.\\PhysicalDrive0");
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99 devname[17] += drive - 128;
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100 }
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101 else {
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102 strcpy(devname, "\\\\.\\A:");
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103 devname[4] += drive;
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104 }
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105 hDevice = CreateFile (devname, GENERIC_READ,
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106 FILE_SHARE_READ | FILE_SHARE_WRITE, NULL, OPEN_EXISTING, 0, NULL);
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107 if (hDevice == INVALID_HANDLE_VALUE)
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108 return -1;
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109 SetFilePointer(hDevice, (startingsector*512), NULL, FILE_BEGIN);
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110 if (mode == MODE_READ) {
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111 if (!ReadFile(hDevice, buffer, 512, &result, NULL))
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112 result = -1;
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113 }
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114 else {
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115 if (!WriteFile(hDevice, buffer, 512, &result, NULL))
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116 result = -1;
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117 }
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118 CloseHandle(hDevice);
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119 return result;
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120 }
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121
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122 static int rawrite(unsigned long drive, char *isoFileName)
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123 {
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124 int fdiso, s, dev;
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125
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126 if (drive == 0) return;
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127 for (dev = 128; (drive & 1) == 0; dev++)
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128 drive >>= 1;
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129 fdiso = open(isoFileName, O_RDONLY|O_BINARY);
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130 for (s = 0;; s++) {
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131 int s, n = read(fdiso, buffer, sizeof(buffer));
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132 if (n <= 0) break;
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133 rdwrsector(MODE_WRITE, dev, s);
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134 }
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135 close(fdiso);
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136 return dev;
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137 }
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138
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139 static unsigned long drives(void)
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140 {
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141 int i, mask, result;
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142
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143 for (i = result = 0, mask = 1; i < 8; i++, mask <<= 1) {
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144 if (rdwrsector(MODE_READ, i+128, 0) != -1)
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145 result |= mask;
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146 }
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147 return result;
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148 }
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149
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150 static void writefloppy(char *isoFileName)
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151 {
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152 int i, n, fd;
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153
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154 buffer[BOOTSTRAP_SECTOR_COUNT_OFFSET] = 0;
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155 fd = open(isoFileName, O_RDONLY|O_BINARY);
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156 if (fd != -1) {
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157 read(fd, buffer, sizeof(buffer));
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158 n = buffer[BOOTSTRAP_SECTOR_COUNT_OFFSET];
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159 if (n != 0 &&
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160 lseek(fd, * (unsigned short *) (buffer + 66) - (512 * n),
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161 SEEK_SET) != -1) {
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162 for (i = 0; i <= n; i++) {
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163 if (i == 1) strncpy(buffer, isoFileName, 512);
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164 else read(fd, buffer, 512);
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165 rdwrsector(MODE_WRITE, 0, i);
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166 }
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167 }
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168 close(fd);
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169 }
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170 }
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171
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172 //TODO #define VCPI_LINUX_LOADER The DOS/EXE loader can boot in VM86 using VCPI API
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173 int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance,
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174 LPSTR lpCmdLine, int nCmdShow)
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175 {
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176 char isoFileName[MAX_PATH];
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177 char header[32];
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178 int fd;
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179 int usbkeyicon = MB_ICONASTERISK;
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180 char *usbkeymsg = "You can either:\n\n"
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181 "- create a SliTaz USB boot key or a boot memory card.\n"
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182 " (note that this will be read only like a CDROM.\n"
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183 " The Slitaz utility 'tazusb' can be used later to create\n"
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184 " a true read/write USB key).\n\n"
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185 "- create a SliTaz bootstrap floppy for the ISO image\n"
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186 " on the hard disk.\n"
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187 "\nDo you want to create a boot key now ?";
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188
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189 GetModuleFileName(hInstance, isoFileName, MAX_PATH);
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190 if (!iswinnt()) {
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191 #ifdef VCPI_LINUX_LOADER
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192 exec16bits(isoFileName);
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193 #else
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194 MessageBox(NULL,"No support for Win9x yet.\n"
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195 "Retry in DOS mode without emm386.\n",
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196 "Sorry", MB_OK|MB_ICONERROR);
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197 exit(1);
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198 #endif
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199 }
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pascal@14261
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200 if (!ishybrid(isoFileName)) {
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201 if (MessageBox(NULL,"Not an isolinux hybrid ISO.\n"
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202 "This ISO image will not boot\n"
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203 "from the media that you create !",
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204 "Will not boot !",
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205 MB_OKCANCEL|MB_ICONWARNING) == IDCANCEL)
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206 exit(0);
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207 }
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208 header[BOOTSTRAP_SECTOR_COUNT_OFFSET] = 0;
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209 fd = open(isoFileName, O_RDONLY|O_BINARY);
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210 if (fd != -1) {
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211 read(fd, header, sizeof(header));
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212 close(fd);
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213 }
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214 if (header[BOOTSTRAP_SECTOR_COUNT_OFFSET] == 0) { // No floppy bootstrap available
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215 usbkeyicon = MB_ICONQUESTION;
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216 usbkeymsg = "Do you want to create a boot key ?";
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217 }
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218 if (MessageBox(NULL,usbkeymsg, "Create a boot stick ?",
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219 MB_YESNO|usbkeyicon) == IDYES) {
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220 unsigned long base, new;
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221 int retry;
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222
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223 if (MessageBox(NULL,"Step 1: unplug the USB stick.",
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224 "Drive detection 1/2",
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225 MB_OKCANCEL|MB_ICONEXCLAMATION) == IDCANCEL)
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226 exit(0);
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227 base = drives();
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228 if (MessageBox(NULL,"Step 2: plug the USB stick in.",
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229 "Drive detection 2/2",
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230 MB_OKCANCEL|MB_ICONEXCLAMATION) == IDCANCEL)
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231 exit(0);
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232 retry = 0;
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233 do {
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234 Sleep(1000); // ms
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235 new = drives();
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236 } while (new == base && retry++ < 10);
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237 if (new == base) {
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238 MessageBox(NULL,"No USB stick found.","Sorry",
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239 MB_OK|MB_ICONERROR);
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240 }
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241 else {
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242 char *msg = "(hd0) is up to date.";
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243 msg[3] += rawrite(base ^ new, isoFileName) - 128;
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244 MessageBox(NULL,msg,"Finished",MB_OK);
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245 }
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246 }
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pascal@14266
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247 else if (header[BOOTSTRAP_SECTOR_COUNT_OFFSET] != 0 &&
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248 MessageBox(NULL,"Do you want to create a bootstrap floppy ?",
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249 "Create a bootstrap floppy ?",
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250 MB_YESNO|MB_ICONQUESTION) == IDYES &&
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251 MessageBox(NULL,"Insert a floppy disk in drive now",
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252 "Insert floppy",
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253 MB_OKCANCEL|MB_ICONEXCLAMATION) != IDCANCEL) {
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254
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pascal@14261
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255 // Create a 9k bootstrap with vfat, ext2 & ntfs drivers
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pascal@14261
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256 // to boot the ISO image on hard disk
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pascal@14261
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257 writefloppy(isoFileName);
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pascal@14266
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258 MessageBox(NULL,"The bootstrap floppy is up to date.",
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pascal@14266
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259 "Finished",MB_OK);
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260 }
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261 }
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