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authorJunio C Hamano <gitster@pobox.com>2007-08-03 22:13:09 -0700
committerJunio C Hamano <gitster@pobox.com>2007-08-05 10:55:55 -0700
commit936492d3cf96817f03182712ca14eb4744c721ef (patch)
treede65c7eaa5cd4ae96ad3e415298107c11c00abdf /unpack-trees.c
parent64a476e691cb08c2f8bd6d40cc88fb8ccb9ed955 (diff)
downloadgit-936492d3cf96817f03182712ca14eb4744c721ef.tar.gz
unpack-trees.c: assume submodules are clean during check-out
Sven originally raised this issue: If you have a submodule checked out and you go back (or forward) to a revision of the supermodule that contains a different revision of the submodule and then switch to another revision, it will complain that the submodule is not uptodate, because git simply didn't update the submodule in the first move. The current policy is to consider it is perfectly normal that checked-out submodule is out-of-sync wrt the supermodule index. At least until we introduce a superproject repository configuration option that says "in this repository, I do care about this submodule and at any time I move around in the superproject, recursively check out the submodule to match", it is a reasonable policy, as we currently do not recursively checkout the submodules at all. The most extreme case of this policy is that the superproject index knows about the submodule but the subdirectory does not even have to be checked out. The function verify_uptodate(), called during the two-way merge aka branch switching, is about "make sure the filesystem entity that corresponds to this cache entry is up to date, lest we lose the local modifications". As we explicitly allow submodule checkout to drift from the supermodule index entry, the check should say "Ok, for submodules, not matching is the norm" for now. Later when we have the ability to mark "I care about this submodule to be always in sync with the superproject" (thereby implementing automatic recursive checkout and perhaps diff, among other things), we should check if the submodule in question is marked as such and perform the current test. Acked-by: Lars Hjemli <hjemli@gmail.com> Acked-by: Sven Verdoolaege <skimo@kotnet.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Diffstat (limited to 'unpack-trees.c')
-rw-r--r--unpack-trees.c9
1 files changed, 9 insertions, 0 deletions
diff --git a/unpack-trees.c b/unpack-trees.c
index 3b32718436..dfd985b0ef 100644
--- a/unpack-trees.c
+++ b/unpack-trees.c
@@ -407,6 +407,15 @@ static void verify_uptodate(struct cache_entry *ce,
unsigned changed = ce_match_stat(ce, &st, 1);
if (!changed)
return;
+ /*
+ * NEEDSWORK: the current default policy is to allow
+ * submodule to be out of sync wrt the supermodule
+ * index. This needs to be tightened later for
+ * submodules that are marked to be automatically
+ * checked out.
+ */
+ if (S_ISGITLINK(ntohl(ce->ce_mode)))
+ return;
errno = 0;
}
if (errno == ENOENT)