| POSIX bits | Windows mapping | |------------|----------------| | 0400 (owner read) | FILE_GENERIC_READ for owner SID | | 0200 (owner write) | FILE_GENERIC_WRITE | | 0100 (owner exec) | Treat .exe/.com/.bat specially | | 0040 (group read) | Not directly mappable → set inherit flag |
This command creates a tar archive named archive.tar containing file1.txt and file2.txt .
┌─────────────────────────────────────────────────────┐ │ CLI Parser │ │ (getopt-like, supports -c, -x, -f, -v, -C) │ └─────────────────┬───────────────────────────────────┘ │ ┌─────────────────▼───────────────────────────────────┐ │ Archive Dispatcher │ │ (create / extract / list / append / concat) │ └────────┬────────────────────────┬───────────────────┘ │ │ ┌────────▼────────┐ ┌────────▼────────┐ │ Writer │ │ Reader │ │ • Block packing │ │ • Block parsing │ │ • Checksum calc │ │ • Checksum ver │ │ • Header build │ │ • Type dispatch │ └────────┬────────┘ └────────┬────────┘ │ │ ┌────────▼────────────────────────▼────────┐ │ Windows I/O Layer │ │ • CreateFile / ReadFile / WriteFile │ │ • SetFileTime / GetFileTime │ │ • FindFirstFile / FindNextFile │ │ • Reparse point handling (symlinks) │ └────────────────────────────────────────────┘ tar utility for windows
Here are some key features and facts about using tar on Windows:
// Windows-specific mode mapping header.mode[0] = '0'; header.mode[1] = info.isReadOnly ? '4' : '6'; strcpy(header.magic, "ustar"); With native support in Windows 10 and later,
The tar utility on Windows provides a familiar way for users to work with tar archives, especially for those transitioning from Unix-like environments. With native support in Windows 10 and later, the need for third-party tools to access tar functionality has diminished, making it easier for users to handle various archive formats directly within Windows.
This command extracts the contents of archive.tar into the current directory. '5' : '0';
bool TarWriter::addFile(const std::wstring& path, const std::wstring& archiveName) WindowsFileInfo info = GetFileInfo(path); TarHeader header = 0; // Fill POSIX fields strcpy(header.name, ToUtf8(archiveName).c_str()); snprintf(header.size, 12, "%011o", info.size); snprintf(header.mtime, 12, "%011o", FileTimeToUnixTime(info.lastWriteTime)); header.typeflag = info.isDirectory ? '5' : '0';
