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Dont try to use hardlinks on non-NTFS filesystems on windows

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Kovid Goyal 2015-12-10 16:02:33 +05:30
parent 8c79949a1d
commit 4952caec6c
1 changed files with 7 additions and 5 deletions
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12
src/calibre/utils/filenames.py
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@ -549,13 +549,15 @@ def copyfile(src, dest):
def get_hardlink_function(src, dest): def get_hardlink_function(src, dest):
if iswindows: if iswindows:
import win32file import win32file, win32api
root = dest[0] + b':'
try: try:
dt = win32file.GetDriveType(dest[:2]) is_suitable = win32file.GetDriveType(root) not in (win32file.DRIVE_REMOTE, win32file.DRIVE_CDROM)
# See https://msdn.microsoft.com/en-us/library/windows/desktop/aa364993(v=vs.85).aspx
supports_hard_links = win32api.GetVolumeInformation(root + os.sep)[3] & 0x00400000
except Exception: except Exception:
dt = win32file.DRIVE_UNKNOWN supports_hard_links = is_suitable = False
hardlink = None if dt in (win32file.DRIVE_REMOTE, win32file.DRIVE_CDROM) else windows_fast_hardlink hardlink = windows_fast_hardlink if is_suitable and supports_hard_links and src[0].lower() == dest[0].lower() else None
hardlink = None if src[0].lower() != dest[0].lower() else hardlink
else: else:
hardlink = os.link hardlink = os.link
return hardlink return hardlink