static int winfs_stat(struct file *f, struct newstat *buf)
{
struct winfs_file *winfile = (struct winfs_file *) f;
BY_HANDLE_FILE_INFORMATION info;
if (!GetFileInformationByHandle(winfile->handle, &info))
{
log_warning("GetFileInformationByHandle() failed.\n");
return -1; /* TODO */
}
/* Programs (ld.so) may use st_dev and st_ino to identity files so these must be unique for each file. */
INIT_STRUCT_NEWSTAT_PADDING(buf);
buf->st_dev = mkdev(8, 0); // (8, 0): /dev/sda
//buf->st_ino = ((uint64_t)info.nFileIndexHigh << 32ULL) + info.nFileIndexLow;
/* Hash 64 bit inode to 32 bit to fix legacy applications
* We may later add an option for changing this behaviour
*/
buf->st_ino = info.nFileIndexHigh ^ info.nFileIndexLow;
if (info.dwFileAttributes & FILE_ATTRIBUTE_READONLY)
buf->st_mode = 0555;
else
buf->st_mode = 0755;
if (info.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY)
{
buf->st_mode |= S_IFDIR;
buf->st_size = 0;
}
else
{
int r;
if ((info.dwFileAttributes & FILE_ATTRIBUTE_SYSTEM)
&& (r = winfs_read_symlink(winfile->handle, NULL, 0)) > 0)
{
buf->st_mode |= S_IFLNK;
buf->st_size = r;
}
else
{
buf->st_mode |= S_IFREG;
buf->st_size = ((uint64_t)info.nFileSizeHigh << 32ULL) + info.nFileSizeLow;
}
}
buf->st_nlink = info.nNumberOfLinks;
buf->st_uid = 0;
buf->st_gid = 0;
buf->st_rdev = 0;
buf->st_blksize = PAGE_SIZE;
buf->st_blocks = (buf->st_size + buf->st_blksize - 1) / buf->st_blksize;
buf->st_atime = filetime_to_unix_sec(&info.ftLastAccessTime);
buf->st_atime_nsec = filetime_to_unix_nsec(&info.ftLastAccessTime);
buf->st_mtime = filetime_to_unix_sec(&info.ftLastWriteTime);
buf->st_mtime_nsec = filetime_to_unix_nsec(&info.ftLastWriteTime);
buf->st_ctime = filetime_to_unix_sec(&info.ftCreationTime);
buf->st_ctime_nsec = filetime_to_unix_nsec(&info.ftCreationTime);
return 0;
}
static int winfs_stat(struct file *f, struct newstat *buf)
{
AcquireSRWLockShared(&f->rw_lock);
struct winfs_file *winfile = (struct winfs_file *) f;
BY_HANDLE_FILE_INFORMATION info;
GetFileInformationByHandle(winfile->handle, &info);
/* Programs (ld.so) may use st_dev and st_ino to identity files so these must be unique for each file. */
INIT_STRUCT_NEWSTAT_PADDING(buf);
buf->st_dev = mkdev(8, 0); // (8, 0): /dev/sda
//buf->st_ino = ((uint64_t)info.nFileIndexHigh << 32ULL) + info.nFileIndexLow;
/* Hash 64 bit inode to 32 bit to fix legacy applications
* We may later add an option for changing this behaviour
*/
buf->st_ino = info.nFileIndexHigh ^ info.nFileIndexLow;
if (info.dwFileAttributes & FILE_ATTRIBUTE_READONLY)
buf->st_mode = 0555;
else
buf->st_mode = 0755;
if (info.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY)
{
buf->st_mode |= S_IFDIR;
buf->st_size = 0;
}
else
{
buf->st_mode |= S_IFREG;
buf->st_size = ((uint64_t)info.nFileSizeHigh << 32ULL) + info.nFileSizeLow;
if (info.dwFileAttributes & FILE_ATTRIBUTE_SYSTEM)
{
WaitForSingleObject(winfile->fp_mutex, INFINITE);
/* Save current file pointer */
LARGE_INTEGER distanceToMove, currentFilePointer;
distanceToMove.QuadPart = 0;
SetFilePointerEx(winfile->handle, distanceToMove, ¤tFilePointer, FILE_CURRENT);
int type = winfs_get_special_file_type(winfile->handle);
if (type > 0)
{
if (type == SPECIAL_FILE_SYMLINK)
{
buf->st_mode |= S_IFLNK;
buf->st_size -= WINFS_SYMLINK_HEADER_LEN;
}
else if (type == SPECIAL_FILE_SOCKET)
{
buf->st_mode |= S_IFSOCK;
buf->st_size = 0;
}
}
/* Restore current file pointer */
SetFilePointerEx(winfile->handle, currentFilePointer, ¤tFilePointer, FILE_BEGIN);
ReleaseMutex(winfile->fp_mutex);
}
}
buf->st_nlink = info.nNumberOfLinks;
buf->st_uid = 0;
buf->st_gid = 0;
buf->st_rdev = 0;
buf->st_blksize = PAGE_SIZE;
buf->st_blocks = (buf->st_size + buf->st_blksize - 1) / buf->st_blksize;
buf->st_atime = filetime_to_unix_sec(&info.ftLastAccessTime);
buf->st_atime_nsec = filetime_to_unix_nsec(&info.ftLastAccessTime);
buf->st_mtime = filetime_to_unix_sec(&info.ftLastWriteTime);
buf->st_mtime_nsec = filetime_to_unix_nsec(&info.ftLastWriteTime);
buf->st_ctime = filetime_to_unix_sec(&info.ftCreationTime);
buf->st_ctime_nsec = filetime_to_unix_nsec(&info.ftCreationTime);
ReleaseSRWLockShared(&f->rw_lock);
return 0;
}
