--- suexec.c 2008-11-30 15:47:31.000000000 +0000
+++ suexec.c.chroot    2006-04-09 10:43:21.000000000 +0000
@@ -259,6 +259,7 @@
     char *cmd;              /* command to be executed    */
     char cwd[AP_MAXPATH];   /* current working directory */
     char dwd[AP_MAXPATH];   /* docroot working directory */
+    char nwd[AP_MAXPATH];   /* docroot working directory */
     struct passwd *pw;      /* password entry holder     */
     struct group *gr;       /* group entry holder        */
     struct stat dir_info;   /* directory info holder     */
@@ -466,6 +465,38 @@
         exit(108);
     }

+    int striplen = strlen (target_homedir);
+
+    char* tlen = strchr(target_homedir, '/');
+    char* hlen = strchr(tlen+1, '/');
+    char* ulen = strchr(hlen+1, '/');
+    char* chroot_dir = strndup(target_homedir, ulen-target_homedir);
+    char* pt = getenv("PATH_TRANSLATED");
+    if (pt != 0) {
+      setenv("PATH_TRANSLATED", pt + (ulen - target_homedir), 1);
+    }
+
+    setenv("DOCUMENT_ROOT", "/", 1);
+
+    if (getcwd(nwd, AP_MAXPATH) == NULL) {
+        log_err("cannot get current working directory (prechroot)\n");
+        exit(111);
+    }
+
+    char* trunc_nwd = nwd+(ulen-target_homedir);
+
+    if (chdir(chroot_dir)) {
+        log_err("crit: can't chdir to chroot dir (%s)",chroot_dir);
+        exit(121);
+    }
+
+    if (chroot(chroot_dir) != 0) {
+      log_err("emerg: failed to chroot (%s, %s)\n", chroot_dir, cmd);
+      exit(122);
+    }
+
+    chdir (trunc_nwd);
+
     /*
      * Change UID/GID here so that the following tests work over NFS.
      *