如何以编程方式确定驱动器的空间/大小? 在LInux和Windows上

那就是:如何检查未格式化的驱动器大小…不要考虑格式化的驱动器…只是未格式化的驱动器。

在Linux下,如果您想要整个驱动器的大小,请阅读/sys/block/sda/size

要查找分区的大小,请阅读/sys/block/sda/sda1/size

sdasda1替换为您的设备/分区的名称。

或者,如果您可以打开原始设备文件,则可以使用BLKGETSIZE ioctl

对于Windows ..你可以使用DeviceIoControl()。

 #include <windows.h> #include <winioctl.h> #include <stdio.h> BOOL GetDriveGeometry(DISK_GEOMETRY *pdg) { HANDLE hDevice; // handle to the drive to be examined BOOL bResult; // results flag DWORD junk; // discard results hDevice = CreateFile(TEXT("\\\\.\\PhysicalDrive0"), // drive 0, // no access to the drive FILE_SHARE_READ | // share mode FILE_SHARE_WRITE, NULL, // default security attributes OPEN_EXISTING, // disposition 0, // file attributes NULL); // do not copy file attributes if (hDevice == INVALID_HANDLE_VALUE) // cannot open the drive { return (FALSE); } bResult = DeviceIoControl(hDevice, // device to be queried IOCTL_DISK_GET_DRIVE_GEOMETRY, // operation to perform NULL, 0, // no input buffer pdg, sizeof(*pdg), // output buffer &junk, // # bytes returned (LPOVERLAPPED) NULL); // synchronous I/O CloseHandle(hDevice); return (bResult); } int main(int argc, char *argv[]) { DISK_GEOMETRY pdg; // disk drive geometry structure BOOL bResult; // generic results flag ULONGLONG DiskSize; // size of the drive, in bytes bResult = GetDriveGeometry (&pdg); if (bResult) { printf("Cylinders = %I64d\n", pdg.Cylinders); printf("Tracks/cylinder = %ld\n", (ULONG) pdg.TracksPerCylinder); printf("Sectors/track = %ld\n", (ULONG) pdg.SectorsPerTrack); printf("Bytes/sector = %ld\n", (ULONG) pdg.BytesPerSector); DiskSize = pdg.Cylinders.QuadPart * (ULONG)pdg.TracksPerCylinder * (ULONG)pdg.SectorsPerTrack * (ULONG)pdg.BytesPerSector; printf("Disk size = %I64d (Bytes) = %I64d (Gb)\n", DiskSize, DiskSize / (1024 * 1024 * 1024)); } else { printf ("GetDriveGeometry failed. Error %ld.\n", GetLastError ()); } return ((int)bResult); }