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cygwin potentially corrupting permissions?
- From: Greg Freemyer <greg dot freemyer at gmail dot com>
- To: cygwin at cygwin dot com
- Date: Wed, 23 Sep 2015 18:58:04 -0400
- Subject: cygwin potentially corrupting permissions?
- Authentication-results: sourceware.org; auth=none
I've noticed on 2 different machines that if I copy (cp) a file I can
read with cygwin, I don't have permission to read the copy.
I don't recall that happening in that past. If this was Linux I would
feel comfortable looking at umask, etc. to figure out what is going
on. With cygwin I'm at a loss.
If someone can tell me what I have configured wrong, I'd really appreciate it.
fyi: I have a very vanilla install of cygwin on both machines. I've
been using cygwin for many years and never noticed this before. It
maybe an issue unique to Excel.
Here's a scenario I just went through:
1) Use Excel (2010 or 2013) to create a simple 2 column, 3 row table
and use "Save As" to save it as a CSV file name "Book1.csv"
2) verify it can be read via cygwin
$ cat Book1.csv
3) use cp to make a copy
cp Book1.csv fail.csv
4) try to read the copy and fail
$ cat fail.csv
cat: fail.csv: Permission denied
5) Verify the owner / UID / perms are the same
$ ls -l Book1.csv fail.csv
----rwx---+ 1 GAF None 25 Sep 23 18:45 Book1.csv
----rwx---+ 1 GAF None 25 Sep 23 18:46 fail.csv
$ ls -ln Book1.csv fail.csv
----rwx---+ 1 1006 513 25 Sep 23 18:45 Book1.csv
----rwx---+ 1 1006 513 25 Sep 23 18:46 fail.csv
They are, but there are extended attributes hiding behind the + sign.
6) Force the permissions and test again
$ chmod +rw fail.csv
$ cat fail.csv
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