tests: Temporarily build chroot_wrapper

tests/CMakeLists.txt

@@ -81,6 +81,14 @@ if (WITH_CLIENT_TESTING)
         execute_process(COMMAND ${ID_EXECUTABLE} -u OUTPUT_VARIABLE LOCAL_UID OUTPUT_STRIP_TRAILING_WHITESPACE)
     endif()
 
+    # chroot_wrapper
+    add_library(chroot_wrapper SHARED chroot_wrapper.c)
+    set(CHROOT_WRAPPER_LIBRARY ${CMAKE_CURRENT_BINARY_DIR}/${CMAKE_SHARED_LIBRARY_PREFIX}chroot_wrapper${CMAKE_SHARED_LIBRARY_SUFFIX})
+    set(TEST_TARGET_LIBRARIES
+        ${TEST_TARGET_LIBRARIES}
+        chroot_wrapper
+    )
+
     # homedir will be used in passwd
     set(HOMEDIR ${CMAKE_CURRENT_BINARY_DIR}/home)
 
@@ -94,7 +102,8 @@ if (WITH_CLIENT_TESTING)
     configure_file(etc/pam_matrix_passdb.in ${CMAKE_CURRENT_BINARY_DIR}/etc/pam_matrix_passdb @ONLY)
     configure_file(etc/pam.d/sshd.in ${CMAKE_CURRENT_BINARY_DIR}/etc/pam.d/sshd @ONLY)
 
-    set(TORTURE_ENVIRONMENT "LD_PRELOAD=${SOCKET_WRAPPER_LIBRARY}:${NSS_WRAPPER_LIBRARY}:${UID_WRAPPER_LIBRARY}:${PAM_WRAPPER_LIBRARY}")
+
+    set(TORTURE_ENVIRONMENT "LD_PRELOAD=${SOCKET_WRAPPER_LIBRARY}:${NSS_WRAPPER_LIBRARY}:${UID_WRAPPER_LIBRARY}:${PAM_WRAPPER_LIBRARY}:${CHROOT_WRAPPER_LIBRARY}")
     list(APPEND TORTURE_ENVIRONMENT UID_WRAPPER=1 UID_WRAPPER_ROOT=1)
     list(APPEND TORTURE_ENVIRONMENT NSS_WRAPPER_PASSWD=${CMAKE_CURRENT_BINARY_DIR}/etc/passwd)
     list(APPEND TORTURE_ENVIRONMENT NSS_WRAPPER_SHADOW=${CMAKE_CURRENT_BINARY_DIR}/etc/shadow)

tests/chroot_wrapper.c

@@ -0,0 +1,8 @@
+/* silent gcc */
+int chroot(const char *);
+
+int chroot(const char *path)
+{
+    (void)path;
+    return 0;
+}