tests/test-inherit-mode

log: remove increasing windows usage in fastpath

The purpose of increasing windows is to allow backwards iteration on the
filelog  at a reasonable cost.
But is it needed?
 - if follow is False, we have no reason to iterate backwards.
   We basically just want to walk the complete filelog and yield all revisions
   within the revision range. We can do this forward or
   backwards, as it only reads the index.
 - when follow is True, we need to examine the contents of the filelog, and to
   do this efficiently we need to read the filelog forward.
   And on the other hand, to track ancestors and copies, we need to process
   revisions backwards. But is it necessary to use increasing windows
   for this?
   We can iterate over the complete filelog forward, stack the revisions, and
   read the reversed(pile), it does the same thing with a more readable code.

#!/bin/sh

# test that new files created in .hg inherit the permissions from .hg/store

"$TESTDIR/hghave" unix-permissions || exit 80

mkdir dir
# just in case somebody has a strange $TMPDIR
chmod g-s dir
cd dir

cat >printmodes.py <<EOF
import os, sys

allnames = []
isdir = {}
for root, dirs, files in os.walk(sys.argv[1]):
    for d in dirs:
	name = os.path.join(root, d)
	isdir[name] = 1
	allnames.append(name)
    for f in files:
	name = os.path.join(root, f)
	allnames.append(name)
allnames.sort()
for name in allnames:
    suffix = name in isdir and '/' or ''
    print '%05o %s%s' % (os.lstat(name).st_mode & 07777, name, suffix)
EOF

cat >mode.py <<EOF
import sys
import os
print '%05o' % os.lstat(sys.argv[1]).st_mode
EOF

umask 077

hg init repo
cd repo

chmod 0770 .hg/store

echo '% before commit'
echo '% store can be written by the group, other files cannot'
echo '% store is setgid'
python ../printmodes.py .

mkdir dir
touch foo dir/bar
hg ci -qAm 'add files'

echo
echo '% after commit'
echo '% working dir files can only be written by the owner'
echo '% files created in .hg can be written by the group'
echo '% (in particular, store/**, dirstate, branch cache file, undo files)'
echo '% new directories are setgid'
python ../printmodes.py .

umask 007
hg init ../push
echo
echo '% before push'
echo '% group can write everything'
python ../printmodes.py ../push

umask 077
hg -q push ../push
echo
echo '% after push'
echo '% group can still write everything'
python ../printmodes.py ../push

# Test that we don't lose the setgid bit when we call chmod.
# Not all systems support setgid directories (e.g. HFS+), so
# just check that directories have the same mode.
cd ..
hg init setgid
cd setgid
chmod g+rwx .hg/store
chmod g+s .hg/store 2> /dev/null
mkdir dir
touch dir/file
hg ci -qAm 'add dir/file'
storemode=`python ../mode.py .hg/store`
dirmode=`python ../mode.py .hg/store/data/dir`
if [ "$storemode" != "$dirmode" ]; then
    echo "$storemode != $dirmode"
fi