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Fix SF bug # 1330039, patch # 1331635 from Lars Gustaebel (tarfile maintainer)

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Problem: if two files are assigned the same inode
number by the filesystem, the second one will be added
as a hardlink to the first, which means that the
content will be lost.

The patched code checks if the file's st_nlink is
greater 1. So only for files that actually have several
links pointing to them hardlinks will be created, which
is what GNU tar does.

Will backport.
This commit is contained in:
Neal Norwitz 2005-10-20 04:50:13 +00:00
parent 40563eddf1
commit b0e32e2b71
2 changed files with 50 additions and 2 deletions
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3
Lib/tarfile.py
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@ -1150,7 +1150,8 @@ class TarFile(object):
stmd = statres.st_mode
if stat.S_ISREG(stmd):
inode = (statres.st_ino, statres.st_dev)
if inode in self.inodes and not self.dereference:
if not self.dereference and \
statres.st_nlink > 1 and inode in self.inodes:
# Is it a hardlink to an already
# archived file?
type = LNKTYPE