read info/{attributes,exclude} only when in repository

The low-level attribute and gitignore code will try to look
in $GIT_DIR/info for any repo-level configuration files,
even if we have not actually determined that we are in a
repository (e.g., running "git grep --no-index"). In such a
case they end up looking for ".git/info/attributes", etc.

This is generally harmless, as such a file is unlikely to
exist outside of a repository, but it's still conceptually
the wrong thing to do.

Let's detect this situation explicitly and skip reading the
file (i.e., the same behavior we'd get if we were in a
repository and the file did not exist).

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/attr.c b/attr.c
index eec5d7d..1fcf042 100644 (file)
--- a/attr.c
+++ b/attr.c
@@ -531,7 +531,11 @@ static void bootstrap_attr_stack(void)
                debug_push(elem);
        }
 
-       elem = read_attr_from_file(git_path_info_attributes(), 1);
+       if (startup_info->have_repository)
+               elem = read_attr_from_file(git_path_info_attributes(), 1);
+       else
+               elem = NULL;
+
        if (!elem)
                elem = xcalloc(1, sizeof(*elem));
        elem->origin = NULL;

diff --git a/dir.c b/dir.c
index f9412e0..bfa8c8a 100644 (file)
--- a/dir.c
+++ b/dir.c
@@ -2237,8 +2237,6 @@ static GIT_PATH_FUNC(git_path_info_exclude, "info/exclude")
 
 void setup_standard_excludes(struct dir_struct *dir)
 {
-       const char *path;
-
        dir->exclude_per_dir = ".gitignore";
 
        /* core.excludefile defaulting to $XDG_HOME/git/ignore */
@@ -2249,10 +2247,12 @@ void setup_standard_excludes(struct dir_struct *dir)
                                         dir->untracked ? &dir->ss_excludes_file : NULL);
 
        /* per repository user preference */
-       path = git_path_info_exclude();
-       if (!access_or_warn(path, R_OK, 0))
-               add_excludes_from_file_1(dir, path,
-                                        dir->untracked ? &dir->ss_info_exclude : NULL);
+       if (startup_info->have_repository) {
+               const char *path = git_path_info_exclude();
+               if (!access_or_warn(path, R_OK, 0))
+                       add_excludes_from_file_1(dir, path,
+                                                dir->untracked ? &dir->ss_info_exclude : NULL);
+       }
 }
 
 int remove_path(const char *name)