Mercurial > hg
view tests/test-subrepo-svn @ 11769:ca6cebd8734e stable
dirstate: ignore symlinks when fs cannot handle them (issue1888)
When the filesystem cannot handle the executable bit, we currently
ignore it completely when looking for modified files. Similarly, it is
impossible to set or clear the bit when the filesystem ignores it.
This patch makes Mercurial treat symbolic links the same way.
Symlinks are a little different since they manifest themselves as
small files containing a filename (the symlink target). On Windows,
these files show up as regular files, and on Linux and Mac they show
up as real symlinks.
Issue1888 presents a case where the symlink files are better ignored
from the Windows side. A Linux client creates symlinks in a working
copy which is shared over a network between Linux and Windows clients.
The Samba server is helpful and defererences the symlink when the
Windows client looks at it. This means that Mercurial on the Windows
side sees file content instead of a file name in the symlink, and
hence flags the link as modified. Ignoring the change would be much
more helpful, similarly to how Mercurial does not report any changes
when executable bits are ignored in a checkout on Windows.
An initial checkout of a symbolic link on a file system that cannot
handle symbolic links will still result in a regular file containing
the target file name as its content. Sharing such a checkout with a
Linux client will not turn the file into a symlink automatically, but
'hg revert' can fix that. After the revert, the Windows client will
see the correct file content (provided by the Samba server when it
follows the link on the Linux side) and otherwise ignore the change.
Running 'hg perfstatus' 10 times gives these results:
Before: After:
min: 0.544703 min: 0.546549
med: 0.547592 med: 0.548881
avg: 0.549146 avg: 0.548549
max: 0.564112 max: 0.551504
The median time is increased about 0.24%.
author | Martin Geisler <mg@aragost.com> |
---|---|
date | Mon, 09 Aug 2010 15:31:56 +0200 |
parents | 0bf79efeaa20 |
children |
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#!/bin/sh "$TESTDIR/hghave" svn || exit 80 fix_path() { tr '\\' / } escapedwd=`pwd | fix_path` # SVN wants all paths to start with a slash. Unfortunately, # Windows ones don't. Handle that. expr "$escapedwd" : "\/" > /dev/null if [ $? -ne 0 ]; then escapedwd="/$escapedwd" fi escapedwd=`python -c "import urllib, sys; sys.stdout.write(urllib.quote(sys.argv[1]))" "$escapedwd"` filterpath="s|$escapedwd|/root|" filteroutofdate='s/ in transaction.*/ is out of date/;s/Out of date: /File /' filterexternal="s|Fetching external item into '.*/s/externals'|Fetching external item into 's/externals'|g" echo % create subversion repo SVNREPO="file://$escapedwd/svn-repo" WCROOT="`pwd`/svn-wc" svnadmin create svn-repo svn co "$SVNREPO" svn-wc cd svn-wc mkdir src echo alpha > src/alpha svn add src mkdir externals echo other > externals/other svn add externals svn ci -m 'Add alpha' svn up cat > extdef <<EOF externals -r1 $SVNREPO/externals EOF svn propset -F extdef svn:externals src svn ci -m 'Setting externals' cd .. echo % create hg repo mkdir sub cd sub hg init t cd t echo % first revision, no sub echo a > a hg ci -Am0 echo % add first svn sub with leading whitespaces echo "s = [svn] $SVNREPO/src" >> .hgsub svn co --quiet "$SVNREPO"/src s hg add .hgsub hg ci -m1 echo % debugsub hg debugsub | sed "$filterpath" echo echo % change file in svn and hg, commit echo a >> a echo alpha >> s/alpha hg commit -m 'Message!' | sed "$filterexternal" \ | sed 's:Sending.*s/alpha:Sending s/alpha:g' hg debugsub | sed "$filterpath" echo echo a > s/a echo % should be empty despite change to s/a hg st echo echo % add a commit from svn cd "$WCROOT"/src svn up echo xyz >> alpha svn propset svn:mime-type 'text/xml' alpha svn ci -m 'amend a from svn' cd ../../sub/t echo % this commit from hg will fail echo zzz >> s/alpha hg ci -m 'amend alpha from hg' 2>&1 | sed "$filteroutofdate" svn revert -q s/alpha echo % this commit fails because of meta changes svn propset svn:mime-type 'text/html' s/alpha hg ci -m 'amend alpha from hg' 2>&1 | sed "$filteroutofdate" svn revert -q s/alpha echo % this commit fails because of externals changes echo zzz > s/externals/other hg ci -m 'amend externals from hg' svn revert -q s/externals/other echo % this commit fails because of externals meta changes svn propset svn:mime-type 'text/html' s/externals/other hg ci -m 'amend externals from hg' svn revert -q s/externals/other echo echo % clone cd .. hg clone t tc | fix_path cd tc echo % debugsub in clone hg debugsub | sed "$filterpath" echo % verify subrepo is contained within the repo directory python -c "import os.path; print os.path.exists('s')"