X-Git-Url: https://git.octo.it/?a=blobdiff_plain;f=send-pack.c;h=9f9a6e70b8789f63891c5b6e07822c546af8eec4;hb=8548ea8ded0d7025f2540ce8d4648dbf76065d3a;hp=4d015fd6e47e5c8cc518fac1d5601cfa012a46d4;hpb=37fde874c2448ae2cd98abe24df2bd2a50aa2cda;p=git.git

diff --git a/send-pack.c b/send-pack.c
index 4d015fd6..9f9a6e70 100644
--- a/send-pack.c
+++ b/send-pack.c
@@ -105,12 +105,23 @@ static int pack_objects(int fd, struct ref *refs)
 	return 0;
 }
 
+static void unmark_and_free(struct commit_list *list, unsigned int mark)
+{
+	while (list) {
+		struct commit_list *temp = list;
+		temp->item->object.flags &= ~mark;
+		list = temp->next;
+		free(temp);
+	}
+}
+
 static int ref_newer(const unsigned char *new_sha1,
 		     const unsigned char *old_sha1)
 {
 	struct object *o;
 	struct commit *old, *new;
-	struct commit_list *list;
+	struct commit_list *list, *used;
+	int found = 0;
 
 	/* Both new and old must be commit-ish and new is descendant of
 	 * old.  Otherwise we require --force.
@@ -127,14 +138,20 @@ static int ref_newer(const unsigned char *new_sha1,
 
 	if (parse_commit(new) < 0)
 		return 0;
-	list = NULL;
+
+	used = list = NULL;
 	commit_list_insert(new, &list);
 	while (list) {
 		new = pop_most_recent_commit(&list, 1);
-		if (new == old)
-			return 1;
+		commit_list_insert(new, &used);
+		if (new == old) {
+			found = 1;
+			break;
+		}
 	}
-	return 0;
+	unmark_and_free(list, 1);
+	unmark_and_free(used, 1);
+	return found;
 }
 
 static struct ref *local_refs, **local_tail;
@@ -164,7 +181,7 @@ static int send_pack(int in, int out, int nr_refspec, char **refspec)
 	int new_refs;
 
 	/* No funny business with the matcher */
-	remote_tail = get_remote_heads(in, &remote_refs, 0, NULL);
+	remote_tail = get_remote_heads(in, &remote_refs, 0, NULL, 1);
 	get_local_heads();
 
 	/* match them up */
@@ -189,7 +206,8 @@ static int send_pack(int in, int out, int nr_refspec, char **refspec)
 		/* This part determines what can overwrite what.
 		 * The rules are:
 		 *
-		 * (0) you can always use --force.
+		 * (0) you can always use --force or +A:B notation to
+		 *     selectively force individual ref pairs.
 		 *
 		 * (1) if the old thing does not exist, it is OK.
 		 *
@@ -201,16 +219,19 @@ static int send_pack(int in, int out, int nr_refspec, char **refspec)
 		 *     descendant of old, it is OK.
 		 */
 
-		if (!force_update && !is_zero_sha1(ref->old_sha1)) {
+		if (!force_update &&
+		    !is_zero_sha1(ref->old_sha1) &&
+		    !ref->force) {
 			if (!has_sha1_file(ref->old_sha1)) {
 				error("remote '%s' object %s does not "
 				      "exist on local",
 				      ref->name, sha1_to_hex(ref->old_sha1));
 				continue;
 			}
+
 			/* We assume that local is fsck-clean.  Otherwise
-			 * you _could_ have a old tag which points at
-			 * something you do not have which may or may not
+			 * you _could_ have an old tag which points at
+			 * something you do not have, which may or may not
 			 * be a commit.
 			 */
 			if (!ref_newer(ref->peer_ref->new_sha1,