On 3/2/2010 3:58 AM, Corinna Vinschen wrote:
The .exe suffix is added if all of the below is true:
- The file is renamed via the rename(2) function.
- The name does not only change by case on a caseinsensitive mount.
- The file is a binary checked with the Win32 function GetBinaryType,
and the returned type is SCS_32BIT_BINARY or SCS_64BIT_BINARY.
- The source filename has none of the following suffixes:
.com
.dll
.exe
.scr
.sys
- The destination filename has none of the aforementioned suffixes.
All these conditions are true in the svn test case. svn is renaming
tst/tempfile.tmp to tst/notepad.xxx using libapr1, which is using rename(2).
It does seem that the ACLs on the directory and file play a role, too.
I've attached a reproduction script along with a simple rename(2) driver
program. The script explicitly removes the default group ACLs from a
directory before doing a rename(2) in that directory. In that case, no
.exe suffix is added. If you modify the top of the script to set
"SETACLS=set", it will add default group ACLs of rwx and the .exe suffix
is added.
I'm not sure if this points to a bug in Cygwin or not. It does explain
why Alan and I were seeing different behavior.
Regardless, it doesn't seem like rename(2) will be changed to avoid
adding the .exe suffix, so either we live with this behavior in svn or I
need to patch libapr1 to do a rename without triggering this behavior. I
tried using renameat(2) but that (unsurprisingly) also triggers the
behavior.
Is there some sanctioned way to do a rename without triggering the .exe
suffix addition?
--
David Rothenberger ---- daver...@acm.org
Alden's Laws:
(1) Giving away baby clothes and furniture is the major cause
of pregnancy.
(2) Always be backlit.
(3) Sit down whenever possible.
#include <stdio.h>
#include <string.h>
int main (void)
{
int retval;
retval = rename("tst/tempfile.tmp", "tst/notepad.xxx");
if (retval != 0) {
fprintf(stderr, "%s\n", strerror(retval));
return retval;
}
return 0;
}
#!/bin/bash
SETACLS=clear
#SETACLS=set
rm -fr tst
mkdir tst
if [ -n "$SETACLS" ]; then
for g in $(id -G); do
if [ "$SETACLS" = "clear" ]; then
setfacl -m d:g:$g:0 tst
elif [ "$SETACLS" = "set" ]; then
setfacl -m d:g:$g:rwx tst
fi
done
fi
getfacl tst
# Don't copy notepad.exe because that will preserve the file's ACLs
# and will cause the .exe suffix to be added regardless of the
# directory's ACLs.
cat "$(cygpath -Wua)"/notepad.exe > tst/tempfile.tmp
getfacl tst/tempfile.tmp
ls -l tst
./tstren
ls -l tst
--
Problem reports: http://cygwin.com/problems.html
FAQ: http://cygwin.com/faq/
Documentation: http://cygwin.com/docs.html
Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple
