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[misc] fix division by zero if the sector size is misreported

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* It looks like some disks may report a sector size of zero
* Hopefully, this will address #352 (but some report about the
  detected sector size from people observing the crash would be nice)
This commit is contained in:
Pete Batard 2014-08-03 19:34:01 +01:00
parent 270ad743ab
commit 60c66ef813
3 changed files with 14 additions and 7 deletions
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7
src/drive.c
View file

@ -602,7 +602,7 @@ int GetDrivePartitionData(DWORD DriveIndex, char* FileSystemName, DWORD FileSyst
FileSystemName[0] = 0;
volume_name = GetLogicalName(DriveIndex, TRUE, FALSE);
if ((volume_name == NULL) || (!GetVolumeInformationA(volume_name, NULL, 0, NULL, NULL, NULL, FileSystemName, FileSystemNameSize))) {
uprintf("No volume information for disk 0x%02x\n", DriveIndex);
uprintf("No volume information for drive 0x%02x\n", DriveIndex);
}
safe_free(volume_name);
@ -617,6 +617,11 @@ int GetDrivePartitionData(DWORD DriveIndex, char* FileSystemName, DWORD FileSyst
safe_closehandle(hPhysical);
return 0;
}
if (DiskGeometry->Geometry.BytesPerSector < 512) {
uprintf("WARNING: Drive 0x%02x reports a sector size of %d - Correcting to 512 bytes.\n",
DriveIndex, DiskGeometry->Geometry.BytesPerSector);
DiskGeometry->Geometry.BytesPerSector = 512;
}
SelectedDrive.DiskSize = DiskGeometry->DiskSize.QuadPart;
memcpy(&SelectedDrive.Geometry, &DiskGeometry->Geometry, sizeof(DISK_GEOMETRY));
uprintf("Disk type: %s, Sector Size: %d bytes\n", (DiskGeometry->Geometry.MediaType == FixedMedia)?"Fixed":"Removable",

2
src/format.c
View file

@ -431,6 +431,8 @@ static BOOL FormatFAT32(DWORD DriveIndex)
}
memcpy(&dgDrive, &xdgDrive->Geometry, sizeof(dgDrive));
}
if (dgDrive.BytesPerSector < 512)
dgDrive.BytesPerSector = 512;
if (IS_ERROR(FormatStatus)) goto out;
if (!DeviceIoControl (hLogicalVolume, IOCTL_DISK_GET_PARTITION_INFO, NULL, 0, &piDrive,
sizeof(piDrive), &cbRet, NULL)) {

12
src/rufus.rc
View file

@ -32,7 +32,7 @@ LANGUAGE LANG_NEUTRAL, SUBLANG_NEUTRAL
IDD_DIALOG DIALOGEX 12, 12, 206, 329
STYLE DS_SETFONT | DS_MODALFRAME | DS_FIXEDSYS | DS_CENTER | WS_POPUP | WS_CAPTION | WS_SYSMENU
CAPTION "Rufus 1.4.10.507"
CAPTION "Rufus 1.4.10.508"
FONT 8, "MS Shell Dlg", 400, 0, 0x1
BEGIN
DEFPUSHBUTTON "Start",IDC_START,94,291,50,14
@ -165,7 +165,7 @@ END
RTL_IDD_DIALOG DIALOGEX 12, 12, 206, 329
STYLE DS_SETFONT | DS_MODALFRAME | DS_FIXEDSYS | DS_CENTER | WS_POPUP | WS_CAPTION | WS_SYSMENU
EXSTYLE WS_EX_RTLREADING | WS_EX_APPWINDOW | WS_EX_LAYOUTRTL
CAPTION "Rufus 1.4.10.507"
CAPTION "Rufus 1.4.10.508"
FONT 8, "MS Shell Dlg", 400, 0, 0x1
BEGIN
DEFPUSHBUTTON "Start",IDC_START,94,291,50,14
@ -428,8 +428,8 @@ END
//
VS_VERSION_INFO VERSIONINFO
FILEVERSION 1,4,10,507
PRODUCTVERSION 1,4,10,507
FILEVERSION 1,4,10,508
PRODUCTVERSION 1,4,10,508
FILEFLAGSMASK 0x3fL
#ifdef _DEBUG
FILEFLAGS 0x1L
@ -446,13 +446,13 @@ BEGIN
BEGIN
VALUE "CompanyName", "Akeo Consulting (http://akeo.ie)"
VALUE "FileDescription", "Rufus"
VALUE "FileVersion", "1.4.10.507"
VALUE "FileVersion", "1.4.10.508"
VALUE "InternalName", "Rufus"
VALUE "LegalCopyright", "© 2011-2014 Pete Batard (GPL v3)"
VALUE "LegalTrademarks", "http://www.gnu.org/copyleft/gpl.html"
VALUE "OriginalFilename", "rufus.exe"
VALUE "ProductName", "Rufus"
VALUE "ProductVersion", "1.4.10.507"
VALUE "ProductVersion", "1.4.10.508"
END
END
BLOCK "VarFileInfo"