Merge branch 'mm/mediawiki-as-a-remote'

diff --git a/builtin/fetch.c b/builtin/fetch.c
index ead8c9d5c37411da0fefd7a4f2272cb94652ffdb..7a4e41cca75b87d3e5a7c4690658d9879777e965 100644 (file)
--- a/builtin/fetch.c
+++ b/builtin/fetch.c
@@ -13,6 +13,7 @@
 #include "sigchain.h"
 #include "transport.h"
 #include "submodule.h"
+#include "connected.h"
 
 static const char * const builtin_fetch_usage[] = {
        "git fetch [<options>] [<repository> [<refspec>...]]",
@@ -345,62 +346,16 @@ static int update_local_ref(struct ref *ref,
        }
 }
 
-/*
- * The ref_map records the tips of the refs we are fetching. If
- *
- *  $ git rev-list --verify-objects --stdin --not --all
- *
- * (feeding all the refs in ref_map on its standard input) does not
- * error out, that means everything reachable from these updated refs
- * locally exists and is connected to some of our existing refs.
- *
- * Returns 0 if everything is connected, non-zero otherwise.
- */
-static int check_everything_connected(struct ref *ref_map, int quiet)
+static int iterate_ref_map(void *cb_data, unsigned char sha1[20])
 {
-       struct child_process rev_list;
-       const char *argv[] = {"rev-list", "--verify-objects",
-                             "--stdin", "--not", "--all", NULL, NULL};
-       char commit[41];
-       struct ref *ref;
-       int err = 0;
-
-       if (!ref_map)
-               return 0;
-
-       if (quiet)
-               argv[5] = "--quiet";
-
-       memset(&rev_list, 0, sizeof(rev_list));
-       rev_list.argv = argv;
-       rev_list.git_cmd = 1;
-       rev_list.in = -1;
-       rev_list.no_stdout = 1;
-       rev_list.no_stderr = quiet;
-       if (start_command(&rev_list))
-               return error(_("Could not run 'git rev-list'"));
-
-       sigchain_push(SIGPIPE, SIG_IGN);
-
-       memcpy(commit + 40, "\n", 2);
-       for (ref = ref_map; ref; ref = ref->next) {
-               memcpy(commit, sha1_to_hex(ref->old_sha1), 40);
-               if (write_in_full(rev_list.in, commit, 41) < 0) {
-                       if (errno != EPIPE && errno != EINVAL)
-                               error(_("failed write to rev-list: %s"),
-                                     strerror(errno));
-                       err = -1;
-                       break;
-               }
-       }
-       if (close(rev_list.in)) {
-               error(_("failed to close rev-list's stdin: %s"), strerror(errno));
-               err = -1;
-       }
-
-       sigchain_pop(SIGPIPE);
+       struct ref **rm = cb_data;
+       struct ref *ref = *rm;
 
-       return finish_command(&rev_list) || err;
+       if (!ref)
+               return -1; /* end of the list */
+       *rm = ref->next;
+       hashcpy(sha1, ref->old_sha1);
+       return 0;
 }
 
 static int store_updated_refs(const char *raw_url, const char *remote_name,
@@ -423,7 +378,8 @@ static int store_updated_refs(const char *raw_url, const char *remote_name,
        else
                url = xstrdup("foreign");
 
-       if (check_everything_connected(ref_map, 0))
+       rm = ref_map;
+       if (check_everything_connected(iterate_ref_map, 0, &rm))
                return error(_("%s did not send all necessary objects\n"), url);
 
        for (rm = ref_map; rm; rm = rm->next) {
@@ -522,6 +478,8 @@ static int store_updated_refs(const char *raw_url, const char *remote_name,
  */
 static int quickfetch(struct ref *ref_map)
 {
+       struct ref *rm = ref_map;
+
        /*
         * If we are deepening a shallow clone we already have these
         * objects reachable.  Running rev-list here will return with
@@ -531,7 +489,7 @@ static int quickfetch(struct ref *ref_map)
         */
        if (depth)
                return -1;
-       return check_everything_connected(ref_map, 1);
+       return check_everything_connected(iterate_ref_map, 1, &rm);
 }
 
 static int fetch_refs(struct transport *transport, struct ref *ref_map)