On Tue, 30 Sep 2003, Yap on ExactGeom wrote:
> Dear Igor,
>
> How are you? I noticed that you are an active developer of cygwin.
> I really liked this platform and our Core Library is developed
> on this mainly. I have a question:
>
> In my recent (June) installation of cygwin, there was an annoying
> bug -- many of the files that I create are automatically given
> the execute permission. [Since my "ls" will automatically show
> me which files are executable, this is VERY annoying.]
> But this behavior is not universal. If I have a non-executable
> file, and I exit it using gvim, the file will become executable.
> But using vim, it remains non-executable. But I don't think
> the program is with a bad installation of gvim, because this
> phenomenon shows up in other places.
>
> Heard of this bug before?
> Thanks, Chee
Hi, Chee,
Great to hear from you.
I'm redirecting this reply to the general Cygwin list, mostly to get this
into the archives (because I know others are having this same problem).
Also, this brings your question up before a large body of expertise --
perhaps someone else will find something I've missed.
This is not a bug, but rather an artifact of the default permissions files
get when written by Windows programs. Gvim is a pure Windows program, in
contrast with vim, which is a Cygwin one. Also, vim writes files
in-place, whereas gvim creates a new copy -- hence the change in
permissions. Unfortunately, there isn't anything you can easily do to fix
this. I have a script (attached) that I run periodically on my system to
fix the executable permissions. It's not foolproof, but it's better than
nothing (and it should err on the conservative side).
Igor
--
http://cs.nyu.edu/~pechtcha/
|\ _,,,---,,_ [EMAIL PROTECTED]
ZZZzz /,`.-'`' -. ;-;;,_ [EMAIL PROTECTED]
|,4- ) )-,_. ,\ ( `'-' Igor Pechtchanski, Ph.D.
'---''(_/--' `-'\_) fL a.k.a JaguaR-R-R-r-r-r-.-.-. Meow!
"I have since come to realize that being between your mentor and his route
to the bathroom is a major career booster." -- Patrick Naughton#!/bin/sh
#
# A script to fix up executable permissions.
#
# Copyright (c) 2002, 2003, Igor Pechtchanski
#
# Written by Igor Pechtchanski <[EMAIL PROTECTED]>
#
# This program is distributed under the terms of the GNU General Public
# License. For more information see <http://www.gnu.org/licenses/>.
#
PROGNAME="`basename "$0"`"
USAGE="Usage: $PROGNAME [-v|--verbose] [-n|--dry-run] [-b|--batch] [dirs]"
DASH_PRINT=
ECHO=
TEE=cat
BATCH=
dup2() {
# xargs -r -0 -n 1 perl -e 'exit unless ($a=shift);print STDERR "$a\n";print "$a\0"'
# xargs -r -0 -n 100 perl -e 'foreach(@ARGV){print STDERR "$_\n";print "$_\0"}'
perl -e '$/="\0";while(<>){chomp();print STDERR "$_\n";print "$_\0"}'
}
while [ -n "$1" ]; do
case "$1" in
-h|--help) echo "$USAGE" >&2 ; exit 0 ;;
-v|--verbose) DASH_PRINT="-print" ; TEE=dup2 ;;
-n|--dry-run) ECHO="echo" ;;
-b|--batch) BATCH="true" ;;
--) shift ; break ;;
-*) echo "Invalid flag: $1" >&2 ; echo "$USAGE" >&2 ; exit 2 ;;
*) break ;;
esac
shift
done
DIRS="${@:-.}"
#EXEEXT="sh exe bat com dll"
EXEEXT="exe bat com dll"
EXTFILTER="$(echo "$EXEEXT" | perl -pe 's/(\w+)/-name \\*.$1 -o/g')"
#DBGPRG='-exec echo CAUGHT ".(++$i)." {} \\;'
EXEPAT='^#! */^: *Use */eval.*exec'
#PATPRG='-exec perl -ne
\"BEGIN{\\\$s=1};\\\$.=1&&/$p/&&exit(\\\$s=0);exit(\\\$s);END{exit(\\\$s)}\" {} \\;';
PATPRG='-exec awk \"BEGIN{S=1}NR=1&&/$p/{S=0;exit(0)}{exit(S)}END{exit(S)}\" {} \\;';
PATFILTER="$(echo "$EXEPAT" | perl -pe 's/\n$//;@p=split(//);foreach
$p(@p){$p=~s@(['"'"'"/])@[EMAIL PROTECTED];$p="'"$PATPRG $DBGPRG"' -o";};$_=join("
",@p)')"
eval "set -- $EXTFILTER $PATFILTER"
for DIR in $DIRS; do
if [ -d "$DIR" -o -h "$DIR" ]; then
FILTER="-type f"
elif [ -f "$DIR" ]; then
FILTER="-maxdepth 1"
fi
if [ -z "$BATCH" ]; then
find "$DIR" $FILTER -perm -0100 \( "$@" \( $DASH_PRINT -exec $ECHO chmod a-x {} \;
\) \)
else
find "$DIR" $FILTER -perm -0100 \( "$@" -print0 \) | $TEE | xargs -r -0 -n 1000
$ECHO chmod a-x --
fi
done
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