unpack-trees: handle lstat failure for existing directory

diff --git a/path.c b/path.c
index f6226fcd557b1b06706775cb3a32cc780ee2b708..a2c9d1e24afb9d1250c846791607c49d82e9565e 100644 (file)
--- a/path.c
+++ b/path.c
@@ -122,6 +122,44 @@ char *git_path(const char *fmt, ...)
        return cleanup_path(pathname);
 }
 
+char *git_path_submodule(const char *path, const char *fmt, ...)
+{
+       char *pathname = get_pathname();
+       struct strbuf buf = STRBUF_INIT;
+       const char *git_dir;
+       va_list args;
+       unsigned len;
+
+       len = strlen(path);
+       if (len > PATH_MAX-100)
+               return bad_path;
+
+       strbuf_addstr(&buf, path);
+       if (len && path[len-1] != '/')
+               strbuf_addch(&buf, '/');
+       strbuf_addstr(&buf, ".git");
+
+       git_dir = read_gitfile_gently(buf.buf);
+       if (git_dir) {
+               strbuf_reset(&buf);
+               strbuf_addstr(&buf, git_dir);
+       }
+       strbuf_addch(&buf, '/');
+
+       if (buf.len >= PATH_MAX)
+               return bad_path;
+       memcpy(pathname, buf.buf, buf.len + 1);
+
+       strbuf_release(&buf);
+       len = strlen(pathname);
+
+       va_start(args, fmt);
+       len += vsnprintf(pathname + len, PATH_MAX - len, fmt, args);
+       va_end(args);
+       if (len >= PATH_MAX)
+               return bad_path;
+       return cleanup_path(pathname);
+}
 
 /* git_mkstemp() - create tmp file honoring TMPDIR variable */
 int git_mkstemp(char *path, size_t len, const char *template)
@@ -417,7 +455,7 @@ char *enter_repo(char *path, int strict)
 
        if (access("objects", X_OK) == 0 && access("refs", X_OK) == 0 &&
            validate_headref("HEAD") == 0) {
-               setenv(GIT_DIR_ENVIRONMENT, ".", 1);
+               set_git_dir(".");
                check_repository_format();
                return path;
        }
@@ -730,3 +768,10 @@ int daemon_avoid_alias(const char *p)
                }
        }
 }
+
+int offset_1st_component(const char *path)
+{
+       if (has_dos_drive_prefix(path))
+               return 2 + is_dir_sep(path[2]);
+       return is_dir_sep(path[0]);
+}