Hi folks,
Versions of coreutils cp from 9.1-9.5 have been failing with error message:
"cp: cannot create regular file '/tmp/b/c': File exists"
to overwrite existing files even with -f under Cygwin.
I have been trying to run down how and where cp is missing a check that the file
exists by tracing and with gdb without anything obvious grabbing my attention
and raising suspicions.
Any advice for changing my approach, or where specifically to concentrate, could
be helpful in progressing a new release.
A couple of Cygwin specific patches have been applied over many releases with
rebases to root inode handling and allowing case insensitivity that do not
appear to have had any other effect on the flow or operations.
--
Take care. Thanks, Brian Inglis Calgary, Alberta, Canada
La perfection est atteinte Perfection is achieved
non pas lorsqu'il n'y a plus rien à ajouter not when there is no more to add
mais lorsqu'il n'y a plus rien à retirer but when there is no more to cut
-- Antoine de Saint-Exupéry#!/bin/sh
# cp-9.1-fails-file-exists.sh
#set -vx
days=7
ver=9.1
ls_opt=-glo
rc=0
tmp=${TMPDIR:-${TMP:_${TEMP:-/tmp}}}
bin=coreutils-$ver-1.$(arch)/inst/usr/bin
for d in $tmp $bin
do
[ ! -d $d/ ] && echo "${0##*/}: $d: not found" >&2 && rc=2
done
[ 0 -eq $rc ] || exit $rc
export PATH="$PWD/$bin:$PATH"
for u in cp echo ls mkdir rm tee touch
do
if [ ! -s $bin/$u ] || [ ! -x $bin/$u ]
then
echo "${0##*/}: $u: not found" >&2 && rc=2
fi
done
[ 0 -eq $rc ] || exit $rc
for dir in a b
do
rm -fr $tmp/$dir/*
mkdir -p $tmp/$dir/
for f in c # dd eee f.fff gg.ggg hhh.hhh iiiiiii jjjjjjjj kkkkkkkkk
do
echo $f > $tmp/$dir/$f
done
days=$(($days+7))
done
for f in 0 y
do
echo $f > $tmp/a/$f
done
for f in 1 z
do
echo $f > $tmp/b/$f
done
ls $ls_opt $tmp/a/ $tmp/b/
for cp in $bin/cp /bin/cp
do
for f in $tmp/a/*
do
for p in "echo run:" command strace
do
[ "strace" = "$p" ] && o=" -o cp-${f##*/}.strace" || o=''
$p$o $cp -fv $tmp/a/* $tmp/b/
[ 0 -eq $? ] && [ "command" = "$p" ] && break
done
done
ls $ls_opt $tmp/b/
done
/tmp/a/:
total 3
-rw-r--r-- 1 2 Oct 18 10:26 0
-rw-r--r-- 1 2 Oct 18 10:26 c
-rw-r--r-- 1 2 Oct 18 10:26 y
/tmp/b/:
total 3
-rw-r--r-- 1 2 Oct 18 10:26 1
-rw-r--r-- 1 2 Oct 18 10:26 c
-rw-r--r-- 1 2 Oct 18 10:26 z
run: coreutils-9.1-1.x86_64/inst/usr/bin/cp -fv /tmp/a/0 /tmp/a/c /tmp/a/y
/tmp/b/
'/tmp/a/0' -> '/tmp/b/0'
'/tmp/a/c' -> '/tmp/b/c'
coreutils-9.1-1.x86_64/inst/usr/bin/cp: cannot create regular file '/tmp/b/c':
File exists
'/tmp/a/y' -> '/tmp/b/y'
'/tmp/a/0' -> '/tmp/b/0'
/usr/src/coreutils/coreutils-9.1-1.x86_64/inst/usr/bin/cp: cannot create
regular file '/tmp/b/0': File exists
'/tmp/a/c' -> '/tmp/b/c'
/usr/src/coreutils/coreutils-9.1-1.x86_64/inst/usr/bin/cp: cannot create
regular file '/tmp/b/c': File exists
'/tmp/a/y' -> '/tmp/b/y'
/usr/src/coreutils/coreutils-9.1-1.x86_64/inst/usr/bin/cp: cannot create
regular file '/tmp/b/y': File exists
run: coreutils-9.1-1.x86_64/inst/usr/bin/cp -fv /tmp/a/0 /tmp/a/c /tmp/a/y
/tmp/b/
'/tmp/a/0' -> '/tmp/b/0'
coreutils-9.1-1.x86_64/inst/usr/bin/cp: cannot create regular file '/tmp/b/0':
File exists
'/tmp/a/c' -> '/tmp/b/c'
coreutils-9.1-1.x86_64/inst/usr/bin/cp: cannot create regular file '/tmp/b/c':
File exists
'/tmp/a/y' -> '/tmp/b/y'
coreutils-9.1-1.x86_64/inst/usr/bin/cp: cannot create regular file '/tmp/b/y':
File exists
'/tmp/a/0' -> '/tmp/b/0'
/usr/src/coreutils/coreutils-9.1-1.x86_64/inst/usr/bin/cp: cannot create
regular file '/tmp/b/0': File exists
'/tmp/a/c' -> '/tmp/b/c'
/usr/src/coreutils/coreutils-9.1-1.x86_64/inst/usr/bin/cp: cannot create
regular file '/tmp/b/c': File exists
'/tmp/a/y' -> '/tmp/b/y'
/usr/src/coreutils/coreutils-9.1-1.x86_64/inst/usr/bin/cp: cannot create
regular file '/tmp/b/y': File exists
run: coreutils-9.1-1.x86_64/inst/usr/bin/cp -fv /tmp/a/0 /tmp/a/c /tmp/a/y
/tmp/b/
'/tmp/a/0' -> '/tmp/b/0'
coreutils-9.1-1.x86_64/inst/usr/bin/cp: cannot create regular file '/tmp/b/0':
File exists
'/tmp/a/c' -> '/tmp/b/c'
coreutils-9.1-1.x86_64/inst/usr/bin/cp: cannot create regular file '/tmp/b/c':
File exists
'/tmp/a/y' -> '/tmp/b/y'
coreutils-9.1-1.x86_64/inst/usr/bin/cp: cannot create regular file '/tmp/b/y':
File exists
'/tmp/a/0' -> '/tmp/b/0'
/usr/src/coreutils/coreutils-9.1-1.x86_64/inst/usr/bin/cp: cannot create
regular file '/tmp/b/0': File exists
'/tmp/a/c' -> '/tmp/b/c'
/usr/src/coreutils/coreutils-9.1-1.x86_64/inst/usr/bin/cp: cannot create
regular file '/tmp/b/c': File exists
'/tmp/a/y' -> '/tmp/b/y'
/usr/src/coreutils/coreutils-9.1-1.x86_64/inst/usr/bin/cp: cannot create
regular file '/tmp/b/y': File exists
total 5
-rw-r--r-- 1 2 Oct 18 10:26 0
-rw-r--r-- 1 2 Oct 18 10:26 1
-rw-r--r-- 1 2 Oct 18 10:26 c
-rw-r--r-- 1 2 Oct 18 10:26 y
-rw-r--r-- 1 2 Oct 18 10:26 z
run: /bin/cp -fv /tmp/a/0 /tmp/a/c /tmp/a/y /tmp/b/
'/tmp/a/0' -> '/tmp/b/0'
'/tmp/a/c' -> '/tmp/b/c'
'/tmp/a/y' -> '/tmp/b/y'
run: /bin/cp -fv /tmp/a/0 /tmp/a/c /tmp/a/y /tmp/b/
'/tmp/a/0' -> '/tmp/b/0'
'/tmp/a/c' -> '/tmp/b/c'
'/tmp/a/y' -> '/tmp/b/y'
run: /bin/cp -fv /tmp/a/0 /tmp/a/c /tmp/a/y /tmp/b/
'/tmp/a/0' -> '/tmp/b/0'
'/tmp/a/c' -> '/tmp/b/c'
'/tmp/a/y' -> '/tmp/b/y'
total 5
-rw-r--r-- 1 2 Oct 18 10:26 0
-rw-r--r-- 1 2 Oct 18 10:26 1
-rw-r--r-- 1 2 Oct 18 10:26 c
-rw-r--r-- 1 2 Oct 18 10:26 y
-rw-r--r-- 1 2 Oct 18 10:26 z
