Make sure the empty tree exists when needed in merge-recursive.

diff --git a/builtin-init-db.c b/builtin-init-db.c
index 88b39a47eba51f709895d9460d16eacf6cee152f..235a0ee48f2c5ce09c63a949358eb16cde05332d 100644 (file)
--- a/builtin-init-db.c
+++ b/builtin-init-db.c
@@ -198,13 +198,28 @@ static void create_default_files(const char *git_dir, const char *template_path)
 
        git_config(git_default_config);
 
+       /*
+        * We would have created the above under user's umask -- under
+        * shared-repository settings, we would need to fix them up.
+        */
+       if (shared_repository) {
+               path[len] = 0;
+               adjust_shared_perm(path);
+               strcpy(path + len, "refs");
+               adjust_shared_perm(path);
+               strcpy(path + len, "refs/heads");
+               adjust_shared_perm(path);
+               strcpy(path + len, "refs/tags");
+               adjust_shared_perm(path);
+       }
+
        /*
         * Create the default symlink from ".git/HEAD" to the "master"
         * branch, if it does not exist yet.
         */
        strcpy(path + len, "HEAD");
-       if (read_ref(path, sha1) < 0) {
-               if (create_symref(path, "refs/heads/master") < 0)
+       if (read_ref("HEAD", sha1) < 0) {
+               if (create_symref("HEAD", "refs/heads/master") < 0)
                        exit(1);
        }
 
@@ -235,7 +250,7 @@ static const char init_db_usage[] =
  * On the other hand, it might just make lookup slower and messier. You
  * be the judge.  The default case is to have one DB per managed directory.
  */
-int cmd_init_db(int argc, const char **argv, char **envp)
+int cmd_init_db(int argc, const char **argv, const char *prefix)
 {
        const char *git_dir;
        const char *sha1_dir;
@@ -248,9 +263,11 @@ int cmd_init_db(int argc, const char **argv, char **envp)
                if (!strncmp(arg, "--template=", 11))
                        template_dir = arg+11;
                else if (!strcmp(arg, "--shared"))
-                       shared_repository = 1;
+                       shared_repository = PERM_GROUP;
+               else if (!strncmp(arg, "--shared=", 9))
+                       shared_repository = git_config_perm("arg", arg+9);
                else
-                       die(init_db_usage);
+                       usage(init_db_usage);
        }
 
        /*
@@ -286,8 +303,16 @@ int cmd_init_db(int argc, const char **argv, char **envp)
        strcpy(path+len, "/info");
        safe_create_dir(path, 1);
 
-       if (shared_repository)
-               git_config_set("core.sharedrepository", "true");
+       if (shared_repository) {
+               char buf[10];
+               /* We do not spell "group" and such, so that
+                * the configuration can be read by older version
+                * of git.
+                */
+               sprintf(buf, "%d", shared_repository);
+               git_config_set("core.sharedrepository", buf);
+               git_config_set("receive.denyNonFastforwards", "true");
+       }
 
        return 0;
 }