push: fix local refs update if already up-to-date

git push normally updates local refs only after a successful push. If the
remote already has the updates -- pushed indirectly through another repository,
for example -- we forget to update local tracking refs.

Signed-off-by: Clemens Buchacher <drizzd@aon.at>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/builtin-send-pack.c b/builtin-send-pack.c
index 301f23043262059dcb28994527334ba1909671f0..8fdeaa398933be3788c9d6a796d32ee5b2a61484 100644 (file)
--- a/builtin-send-pack.c
+++ b/builtin-send-pack.c
@@ -222,7 +222,7 @@ static void update_tracking_ref(struct remote *remote, struct ref *ref)
 {
        struct refspec rs;
 
-       if (ref->status != REF_STATUS_OK)
+       if (ref->status != REF_STATUS_OK && ref->status != REF_STATUS_UPTODATE)
                return;
 
        rs.src = ref->name;
@@ -424,24 +424,19 @@ static int do_send_pack(int in, int out, struct remote *remote, const char *dest
         */
        new_refs = 0;
        for (ref = remote_refs; ref; ref = ref->next) {
-               const unsigned char *new_sha1;
-
-               if (!ref->peer_ref) {
-                       if (!args.send_mirror)
-                               continue;
-                       new_sha1 = null_sha1;
-               }
-               else
-                       new_sha1 = ref->peer_ref->new_sha1;
 
+               if (ref->peer_ref)
+                       hashcpy(ref->new_sha1, ref->peer_ref->new_sha1);
+               else if (!args.send_mirror)
+                       continue;
 
-               ref->deletion = is_null_sha1(new_sha1);
+               ref->deletion = is_null_sha1(ref->new_sha1);
                if (ref->deletion && !allow_deleting_refs) {
                        ref->status = REF_STATUS_REJECT_NODELETE;
                        continue;
                }
                if (!ref->deletion &&
-                   !hashcmp(ref->old_sha1, new_sha1)) {
+                   !hashcmp(ref->old_sha1, ref->new_sha1)) {
                        ref->status = REF_STATUS_UPTODATE;
                        continue;
                }
@@ -469,14 +464,13 @@ static int do_send_pack(int in, int out, struct remote *remote, const char *dest
                    !ref->deletion &&
                    !is_null_sha1(ref->old_sha1) &&
                    (!has_sha1_file(ref->old_sha1)
-                     || !ref_newer(new_sha1, ref->old_sha1));
+                     || !ref_newer(ref->new_sha1, ref->old_sha1));
 
                if (ref->nonfastforward && !ref->force && !args.force_update) {
                        ref->status = REF_STATUS_REJECT_NONFASTFORWARD;
                        continue;
                }
 
-               hashcpy(ref->new_sha1, new_sha1);
                if (!ref->deletion)
                        new_refs++;
 

diff --git a/t/t5516-fetch-push.sh b/t/t5516-fetch-push.sh
index f0030ad00e4a6478fcb3ccfc503e576bd58003bd..598664ce7fa1747436c0a66d13e464398cac5674 100755 (executable)
--- a/t/t5516-fetch-push.sh
+++ b/t/t5516-fetch-push.sh
@@ -437,6 +437,37 @@ test_expect_success 'push updates local refs' '
 
 '
 
+test_expect_success 'push updates up-to-date local refs' '
+
+       rm -rf parent child &&
+       mkdir parent &&
+       (cd parent && git init &&
+               echo one >foo && git add foo && git commit -m one) &&
+       git clone parent child1 &&
+       git clone parent child2 &&
+       (cd child1 &&
+               echo two >foo && git commit -a -m two &&
+               git push) &&
+       (cd child2 &&
+               git pull ../child1 master &&
+               git push &&
+       test $(git rev-parse master) = $(git rev-parse remotes/origin/master))
+
+'
+
+test_expect_success 'push preserves up-to-date packed refs' '
+
+       rm -rf parent child &&
+       mkdir parent &&
+       (cd parent && git init &&
+               echo one >foo && git add foo && git commit -m one) &&
+       git clone parent child &&
+       (cd child &&
+               git push &&
+       ! test -f .git/refs/remotes/origin/master)
+
+'
+
 test_expect_success 'push does not update local refs on failure' '
 
        rm -rf parent child &&