view tests/test-incoming-outgoing.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
checking changesets
checking manifests
crosschecking files in changesets and manifests
checking files
1 files, 9 changesets, 9 total revisions
comparing with http://localhost:$HGPORT/
changeset:   0:9cb21d99fe27
user:        test
date:        Mon Jan 12 13:46:40 1970 +0000
summary:     0

changeset:   1:d717f5dfad6a
user:        test
date:        Mon Jan 12 13:46:40 1970 +0000
summary:     1

changeset:   2:c0d6b86da426
user:        test
date:        Mon Jan 12 13:46:40 1970 +0000
summary:     2

changeset:   3:dfacbd43b3fe
user:        test
date:        Mon Jan 12 13:46:40 1970 +0000
summary:     3

changeset:   4:1f3a964b6022
user:        test
date:        Mon Jan 12 13:46:40 1970 +0000
summary:     4

changeset:   5:c028bcc7a28a
user:        test
date:        Mon Jan 12 13:46:40 1970 +0000
summary:     5

changeset:   6:a0c0095f3389
user:        test
date:        Mon Jan 12 13:46:40 1970 +0000
summary:     6

changeset:   7:d4be65f4e891
user:        test
date:        Mon Jan 12 13:46:40 1970 +0000
summary:     7

changeset:   8:92b83e334ef8
tag:         tip
user:        test
date:        Mon Jan 12 13:46:40 1970 +0000
summary:     8

comparing with http://localhost:$HGPORT/
changeset:   0:9cb21d99fe27
user:        test
date:        Mon Jan 12 13:46:40 1970 +0000
summary:     0

changeset:   1:d717f5dfad6a
user:        test
date:        Mon Jan 12 13:46:40 1970 +0000
summary:     1

changeset:   2:c0d6b86da426
user:        test
date:        Mon Jan 12 13:46:40 1970 +0000
summary:     2

changeset:   3:dfacbd43b3fe
user:        test
date:        Mon Jan 12 13:46:40 1970 +0000
summary:     3

changeset:   4:1f3a964b6022
tag:         tip
user:        test
date:        Mon Jan 12 13:46:40 1970 +0000
summary:     4

comparing with test
changeset:   0:9cb21d99fe27
user:        test
date:        Mon Jan 12 13:46:40 1970 +0000
summary:     0

changeset:   1:d717f5dfad6a
user:        test
date:        Mon Jan 12 13:46:40 1970 +0000
summary:     1

changeset:   2:c0d6b86da426
user:        test
date:        Mon Jan 12 13:46:40 1970 +0000
summary:     2

changeset:   3:dfacbd43b3fe
user:        test
date:        Mon Jan 12 13:46:40 1970 +0000
summary:     3

changeset:   4:1f3a964b6022
user:        test
date:        Mon Jan 12 13:46:40 1970 +0000
summary:     4

changeset:   5:c028bcc7a28a
user:        test
date:        Mon Jan 12 13:46:40 1970 +0000
summary:     5

changeset:   6:a0c0095f3389
user:        test
date:        Mon Jan 12 13:46:40 1970 +0000
summary:     6

changeset:   7:d4be65f4e891
user:        test
date:        Mon Jan 12 13:46:40 1970 +0000
summary:     7

changeset:   8:92b83e334ef8
tag:         tip
user:        test
date:        Mon Jan 12 13:46:40 1970 +0000
summary:     8

comparing with test
changeset:   0:9cb21d99fe27
user:        test
date:        Mon Jan 12 13:46:40 1970 +0000
summary:     0

changeset:   1:d717f5dfad6a
user:        test
date:        Mon Jan 12 13:46:40 1970 +0000
summary:     1

changeset:   2:c0d6b86da426
user:        test
date:        Mon Jan 12 13:46:40 1970 +0000
summary:     2

changeset:   3:dfacbd43b3fe
user:        test
date:        Mon Jan 12 13:46:40 1970 +0000
summary:     3

changeset:   4:1f3a964b6022
user:        test
date:        Mon Jan 12 13:46:40 1970 +0000
summary:     4

% limit to 2 changesets
comparing with test
changeset:   0:9cb21d99fe27
user:        test
date:        Mon Jan 12 13:46:40 1970 +0000
summary:     0

changeset:   1:d717f5dfad6a
user:        test
date:        Mon Jan 12 13:46:40 1970 +0000
summary:     1

% limit to 2 changesets, test with -p --git
comparing with test
changeset:   0:9cb21d99fe27
user:        test
date:        Mon Jan 12 13:46:40 1970 +0000
summary:     0

diff --git a/foo b/foo
new file mode 100644
--- /dev/null
+++ b/foo
@@ -0,0 +1,1 @@
+0

changeset:   1:d717f5dfad6a
user:        test
date:        Mon Jan 12 13:46:40 1970 +0000
summary:     1

diff --git a/foo b/foo
--- a/foo
+++ b/foo
@@ -1,1 +1,2 @@
 0
+1

comparing with http://localhost:$HGPORT/
changeset:   0:9cb21d99fe27
user:        test
date:        Mon Jan 12 13:46:40 1970 +0000
summary:     0

changeset:   1:d717f5dfad6a
user:        test
date:        Mon Jan 12 13:46:40 1970 +0000
summary:     1

changeset:   2:c0d6b86da426
user:        test
date:        Mon Jan 12 13:46:40 1970 +0000
summary:     2

changeset:   3:dfacbd43b3fe
user:        test
date:        Mon Jan 12 13:46:40 1970 +0000
summary:     3

changeset:   4:1f3a964b6022
user:        test
date:        Mon Jan 12 13:46:40 1970 +0000
summary:     4

changeset:   5:c028bcc7a28a
user:        test
date:        Mon Jan 12 13:46:40 1970 +0000
summary:     5

changeset:   6:a0c0095f3389
user:        test
date:        Mon Jan 12 13:46:40 1970 +0000
summary:     6

changeset:   7:d4be65f4e891
user:        test
date:        Mon Jan 12 13:46:40 1970 +0000
summary:     7

changeset:   8:92b83e334ef8
tag:         tip
user:        test
date:        Mon Jan 12 13:46:40 1970 +0000
summary:     8

comparing with test
changeset:   0:9cb21d99fe27
user:        test
date:        Mon Jan 12 13:46:40 1970 +0000
summary:     0

changeset:   1:d717f5dfad6a
user:        test
date:        Mon Jan 12 13:46:40 1970 +0000
summary:     1

changeset:   2:c0d6b86da426
user:        test
date:        Mon Jan 12 13:46:40 1970 +0000
summary:     2

changeset:   3:dfacbd43b3fe
user:        test
date:        Mon Jan 12 13:46:40 1970 +0000
summary:     3

changeset:   4:1f3a964b6022
user:        test
date:        Mon Jan 12 13:46:40 1970 +0000
summary:     4

changeset:   5:c028bcc7a28a
user:        test
date:        Mon Jan 12 13:46:40 1970 +0000
summary:     5

changeset:   6:a0c0095f3389
user:        test
date:        Mon Jan 12 13:46:40 1970 +0000
summary:     6

changeset:   7:d4be65f4e891
user:        test
date:        Mon Jan 12 13:46:40 1970 +0000
summary:     7

changeset:   8:92b83e334ef8
tag:         tip
user:        test
date:        Mon Jan 12 13:46:40 1970 +0000
summary:     8

adding changesets
adding manifests
adding file changes
added 9 changesets with 9 changes to 1 files
(run 'hg update' to get a working copy)
adding changesets
adding manifests
adding file changes
added 9 changesets with 9 changes to 1 files
(run 'hg update' to get a working copy)
changeset:   8:92b83e334ef8
tag:         tip
user:        test
date:        Mon Jan 12 13:46:40 1970 +0000
summary:     8

changeset:   8:92b83e334ef8
tag:         tip
user:        test
date:        Mon Jan 12 13:46:40 1970 +0000
summary:     8

updating to branch default
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
checking changesets
checking manifests
crosschecking files in changesets and manifests
checking files
1 files, 14 changesets, 14 total revisions
comparing with test
searching for changes
changeset:   9:3741c3ad1096
user:        test
date:        Mon Jan 12 13:46:40 1970 +0000
summary:     9

changeset:   10:de4143c8d9a5
user:        test
date:        Mon Jan 12 13:46:40 1970 +0000
summary:     10

changeset:   11:0e1c188b9a7a
user:        test
date:        Mon Jan 12 13:46:40 1970 +0000
summary:     11

changeset:   12:251354d0fdd3
user:        test
date:        Mon Jan 12 13:46:40 1970 +0000
summary:     12

changeset:   13:bdaadd969642
tag:         tip
user:        test
date:        Mon Jan 12 13:46:40 1970 +0000
summary:     13

% limit to 3 changesets
comparing with test
searching for changes
changeset:   9:3741c3ad1096
user:        test
date:        Mon Jan 12 13:46:40 1970 +0000
summary:     9

changeset:   10:de4143c8d9a5
user:        test
date:        Mon Jan 12 13:46:40 1970 +0000
summary:     10

changeset:   11:0e1c188b9a7a
user:        test
date:        Mon Jan 12 13:46:40 1970 +0000
summary:     11

comparing with http://localhost:$HGPORT/
searching for changes
changeset:   9:3741c3ad1096
user:        test
date:        Mon Jan 12 13:46:40 1970 +0000
summary:     9

changeset:   10:de4143c8d9a5
user:        test
date:        Mon Jan 12 13:46:40 1970 +0000
summary:     10

changeset:   11:0e1c188b9a7a
user:        test
date:        Mon Jan 12 13:46:40 1970 +0000
summary:     11

changeset:   12:251354d0fdd3
user:        test
date:        Mon Jan 12 13:46:40 1970 +0000
summary:     12

changeset:   13:bdaadd969642
tag:         tip
user:        test
date:        Mon Jan 12 13:46:40 1970 +0000
summary:     13

comparing with http://localhost:$HGPORT/
searching for changes
changeset:   9:3741c3ad1096
user:        test
date:        Mon Jan 12 13:46:40 1970 +0000
summary:     9

changeset:   10:de4143c8d9a5
user:        test
date:        Mon Jan 12 13:46:40 1970 +0000
summary:     10

changeset:   11:0e1c188b9a7a
user:        test
date:        Mon Jan 12 13:46:40 1970 +0000
summary:     11