builtin-blame: set up the work_tree before the first file access

diff --git a/send-pack.c b/send-pack.c
index e9b9a39f411b6cfff1c0a4bc3f7e31274c8d2782..b74fd454f2f09d23ffde7db015d4a7458dfcd348 100644 (file)
--- a/send-pack.c
+++ b/send-pack.c
@@ -178,6 +178,35 @@ static int receive_status(int in)
        return ret;
 }
 
+static void update_tracking_ref(struct remote *remote, struct ref *ref)
+{
+       struct refspec rs;
+       int will_delete_ref;
+
+       rs.src = ref->name;
+       rs.dst = NULL;
+
+       if (!ref->peer_ref)
+               return;
+
+       will_delete_ref = is_null_sha1(ref->peer_ref->new_sha1);
+
+       if (!will_delete_ref &&
+                       !hashcmp(ref->old_sha1, ref->peer_ref->new_sha1))
+               return;
+
+       if (!remote_find_tracking(remote, &rs)) {
+               fprintf(stderr, "updating local tracking ref '%s'\n", rs.dst);
+               if (is_null_sha1(ref->peer_ref->new_sha1)) {
+                       if (delete_ref(rs.dst, NULL))
+                               error("Failed to delete");
+               } else
+                       update_ref("update by push", rs.dst,
+                                       ref->new_sha1, NULL, 0, 0);
+               free(rs.dst);
+       }
+}
+
 static int send_pack(int in, int out, struct remote *remote, int nr_refspec, char **refspec)
 {
        struct ref *ref;
@@ -268,9 +297,9 @@ static int send_pack(int in, int out, struct remote *remote, int nr_refspec, cha
                                 * commits at the remote end and likely
                                 * we were not up to date to begin with.
                                 */
-                               error("remote '%s' is not a strict "
-                                     "subset of local ref '%s'. "
-                                     "maybe you are not up-to-date and "
+                               error("remote '%s' is not an ancestor of\n"
+                                     " local  '%s'.\n"
+                                     " Maybe you are not up-to-date and "
                                      "need to pull first?",
                                      ref->name,
                                      ref->peer_ref->name);
@@ -306,22 +335,6 @@ static int send_pack(int in, int out, struct remote *remote, int nr_refspec, cha
                        fprintf(stderr, "\n  from %s\n  to   %s\n",
                                old_hex, new_hex);
                }
-               if (remote && !dry_run) {
-                       struct refspec rs;
-                       rs.src = ref->name;
-                       rs.dst = NULL;
-                       if (!remote_find_tracking(remote, &rs)) {
-                               fprintf(stderr, " Also local %s\n", rs.dst);
-                               if (will_delete_ref) {
-                                       if (delete_ref(rs.dst, NULL)) {
-                                               error("Failed to delete");
-                                       }
-                               } else
-                                       update_ref("update by push", rs.dst,
-                                               ref->new_sha1, NULL, 0, 0);
-                               free(rs.dst);
-                       }
-               }
        }
 
        packet_flush(out);
@@ -334,6 +347,11 @@ static int send_pack(int in, int out, struct remote *remote, int nr_refspec, cha
                        ret = -4;
        }
 
+       if (!dry_run && remote && ret == 0) {
+               for (ref = remote_refs; ref; ref = ref->next)
+                       update_tracking_ref(remote, ref);
+       }
+
        if (!new_refs && ret == 0)
                fprintf(stderr, "Everything up-to-date\n");
        return ret;
@@ -366,7 +384,7 @@ int main(int argc, char **argv)
        char *dest = NULL;
        char **heads = NULL;
        int fd[2], ret;
-       pid_t pid;
+       struct child_process *conn;
        char *remote_name = NULL;
        struct remote *remote = NULL;
 
@@ -434,12 +452,10 @@ int main(int argc, char **argv)
                }
        }
 
-       pid = git_connect(fd, dest, receivepack, verbose ? CONNECT_VERBOSE : 0);
-       if (pid < 0)
-               return 1;
+       conn = git_connect(fd, dest, receivepack, verbose ? CONNECT_VERBOSE : 0);
        ret = send_pack(fd[0], fd[1], remote, nr_heads, heads);
        close(fd[0]);
        close(fd[1]);
-       ret |= finish_connect(pid);
+       ret |= finish_connect(conn);
        return !!ret;
 }