Index: subversion/mod_authz_svn/mod_authz_svn.c
===================================================================
--- subversion/mod_authz_svn/mod_authz_svn.c	(revision 1028364)
+++ subversion/mod_authz_svn/mod_authz_svn.c	(working copy)
@@ -50,6 +50,7 @@
   int authoritative;
   int anonymous;
   int no_auth_when_anon_ok;
+  int repo_relative_access_file;
   const char *base_path;
   const char *access_file;
   const char *force_username_case;
@@ -103,6 +104,13 @@
                "Set to 'On' to suppress authentication and authorization "
                "for requests which anonymous users are allowed to perform. "
                "(default is Off.)"),
+  AP_INIT_FLAG("AuthzSVNRepoRelativeAccessFile", ap_set_flag_slot,
+	       (void *)APR_OFFSETOF(authz_svn_config_rec,
+				    repo_relative_access_file),
+	       OR_AUTHCFG,
+	       "Set to 'On' to allow the AuthzSVNAccessFile to be relative "
+	       "to the repository disk path. "
+	       "(default is Off.)"),
   AP_INIT_TAKE1("AuthzForceUsernameCase", ap_set_string_slot,
                 (void *)APR_OFFSETOF(authz_svn_config_rec,
                                      force_username_case),
@@ -119,18 +127,34 @@
 get_access_conf(request_rec *r, authz_svn_config_rec *conf)
 {
   const char *cache_key = NULL;
+  const char *access_file = NULL;
+  const char *repos_path = NULL;
   void *user_data = NULL;
   svn_authz_t *access_conf = NULL;
   svn_error_t *svn_err;
+  dav_error *dav_err;
   char errbuf[256];
 
+  if (conf->repo_relative_access_file) {
+    dav_err = dav_svn_get_repos_path(r, conf->base_path, &repos_path);
+    if (dav_err) {
+      ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r, dav_err->desc);
+      return NULL;
+    }
+    access_file = apr_pstrcat(r->pool, repos_path, "/conf/authz", NULL);
+  } else {
+    access_file = conf->access_file;
+  }
+
+  ap_log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r, "Path to authz file is %s", access_file);
+
   cache_key = apr_pstrcat(r->pool, "mod_authz_svn:",
-                          conf->access_file, (char *)NULL);
+                          access_file, (char *)NULL);
   apr_pool_userdata_get(&user_data, cache_key, r->connection->pool);
   access_conf = user_data;
   if (access_conf == NULL)
     {
-      svn_err = svn_repos_authz_read(&access_conf, conf->access_file,
+      svn_err = svn_repos_authz_read(&access_conf, access_file,
                                      TRUE, r->connection->pool);
       if (svn_err)
         {
@@ -516,7 +540,7 @@
   username_to_authorize = get_username_to_authorize(r, conf);
 
   /* If configured properly, this should never be true, but just in case. */
-  if (!conf->anonymous || !conf->access_file)
+  if (!conf->anonymous || !conf->access_file || !conf->repo_relative_access_file)
     {
       log_access_verdict(APLOG_MARK, r, 0, repos_path, NULL);
       return HTTP_FORBIDDEN;
@@ -580,7 +604,7 @@
   int status;
 
   /* We are not configured to run */
-  if (!conf->anonymous || !conf->access_file)
+  if (!conf->anonymous || ( !conf->access_file && !conf->repo_relative_access_file))
     return DECLINED;
 
   if (ap_some_auth_required(r))
@@ -638,7 +662,7 @@
 
   /* We are not configured to run, or, an earlier module has already
    * authenticated this request. */
-  if (!conf->access_file || !conf->no_auth_when_anon_ok || r->user)
+  if ((!conf->access_file && !conf->repo_relative_access_file) || !conf->no_auth_when_anon_ok || r->user)
     return DECLINED;
 
   /* If anon access is allowed, return OK, preventing later modules
@@ -665,7 +689,7 @@
   int status;
 
   /* We are not configured to run */
-  if (!conf->access_file)
+  if (!conf->access_file && !conf->repo_relative_access_file)
     return DECLINED;
 
   /* Previous hook (check_user_id) already did all the work,
Index: subversion/mod_authz_svn/INSTALL
===================================================================
--- subversion/mod_authz_svn/INSTALL	(revision 1028364)
+++ subversion/mod_authz_svn/INSTALL	(working copy)
@@ -79,7 +79,27 @@
          though AuthzSVNAnonymous was set to 'No'.  The AuthzSVNAnonymous
          directive prevents the anonymous access check from being run.
 
+      D. Example 4: Per-repository access file
 
+         This configuration allows to use SVNParentPath but have
+         different authz files per repository.
+
+         <Location /svn>
+           DAV svn
+           SVNParentPath /path/to/reposparent
+
+           AuthType Basic
+           AuthName "Subversion repository"
+           AuthUserFile /path/to/htpasswd/file
+
+           AuthzSVNRepoRelativeAccessFile on
+
+           Require valid-user
+         </Location>
+
+         NOTE: AuthzSVNRepoRelativeAccessFile on causes the authz file
+         to be read from /path/to/reposparent/<repo>/conf/authz
+
    2. Specifying permissions
 
       The file format of the access file looks like this: