view tests/test-archive.out @ 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%.

adding foo
adding bar
adding baz/bletch

% gz allowed should give 200
200 Script output follows
% tar.bz2 and zip disallowed should both give 403
403 Archive type not allowed: bz2
403 Archive type not allowed: zip
% bz2 allowed should give 200
200 Script output follows
% zip and tar.gz disallowed should both give 403
403 Archive type not allowed: zip
403 Archive type not allowed: gz
% zip allowed should give 200
200 Script output follows
% tar.gz and tar.bz2 disallowed should both give 403
403 Archive type not allowed: gz
403 Archive type not allowed: bz2
% invalid arch type should give 404
404 Unsupported archive type: None

test-archive-TIP/.hg_archival.txt
test-archive-TIP/bar
test-archive-TIP/baz/bletch
test-archive-TIP/foo
test-archive-TIP/.hg_archival.txt
test-archive-TIP/bar
test-archive-TIP/baz/bletch
test-archive-TIP/foo
Archive:  archive.zip
    testing: test-archive-TIP/.hg_archival.txt   OK
    testing: test-archive-TIP/bar   OK
    testing: test-archive-TIP/baz/bletch   OK
    testing: test-archive-TIP/foo   OK
No errors detected in compressed data of archive.zip.
test/.hg_archival.txt
test/bar
test/baz/bletch
test/foo
test/.hg_archival.txt
test/bar
test/foo
test-TIP/.hg_archival.txt
test-TIP/bar
test-TIP/baz/bletch
test-TIP/foo
autodetected_test/.hg_archival.txt
autodetected_test/bar
autodetected_test/baz/bletch
autodetected_test/foo
autodetect_override_test.zip/.hg_archival.txt
autodetect_override_test.zip/bar
autodetect_override_test.zip/baz/bletch
autodetect_override_test.zip/foo
True
abort: archive prefix contains illegal components
Archive:  test.zip
    testing: test/bar                 OK
    testing: test/baz/bletch          OK
    testing: test/foo                 OK
No errors detected in compressed data of test.zip.
test-TIP/.hg_archival.txt
test-TIP/bar
test-TIP/baz/bletch
test-TIP/foo
rev-0.tar created
% test .hg_archival.txt
repo: daa7f7c60e0a224faa4ff77ca41b2760562af264
node: 2c0277f05ed49d1c8328fb9ba92fba7a5ebcb33e
branch: default
latesttag: null
latesttagdistance: 3
repo: daa7f7c60e0a224faa4ff77ca41b2760562af264
node: 2c0277f05ed49d1c8328fb9ba92fba7a5ebcb33e
branch: default
tag: anothertag
tag: mytag
abort: unknown archive type 'bogus'
% server errors
% empty repo
abort: no working directory: please specify a revision