Cygwin (current): Bug in how managed mounts handle reserved words

[Nicholas Wourms]

(Note: Â I have not re-subscribed to the list yet and probably won't for another week or so, so please CC me in any replies - TIA)

Hi,

I've discovered a small bug in how Cygwin (CVS HEAD as of Saturday) handles reserved dos names created on managed mounts. Â I discovered this while working with a FreeBSD cross-compiler (actually CVS discovered it). Â Rather then bore you with my hypothesis, so here's the details:

OS: Windows XP SP2
FS: NTFS
UNAME: CYGWIN_NT-5.1 foobar 1.5.14(0.122/4/2) 2005-03-02 22:46 i686 unknown unknown Cygwin
$CYGWIN: export check_case:strict tty ntea ntsec smbntsec server checkcodepage:oem

NOTE: All cygwin packages are up to date.

Steps to reproduce:
-------------------
1) mkdir -p /usr/src/test
2) mount -o managed C:\\<path to root>\\usr\\src\\test /usr/src/test
3) cd /usr/src/test
4) mkdir -p cygwin-src/freebsd-src/sys/dev/digi
5) cd cygwin-src/freebsd-src/sys/dev/digi
6) touch .new.con.CX-IBM.h
7) mv .new.con.CX-IBM.h con.CX-IBM.h

The error it gives me is:

"mv: cannot move `.new.con.CX-IBM.h' to `con.CX-IBM.h': Filename exists with different case"

So, I did a strace on the experimental testcase I mentioned above. Â In addition, I setup a control (known working) testcase which used the steps outlined above, except using the filenames ".test.me.now" and "me.now" instead. Â I've attached the differences between the strace outputs of my experiment and control (minus any extraneous differences). Â I haven't looked at it in depth, so unfortunately I don't have a fix. Â However, based on a cursory look, it would seem the problem is somewhere in path_conv (either posix or win).

Cheers,
Nicholas


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