fixup! [LibOS] Test-cases for SPLRB

Signed-off-by: g2flyer <michael.steiner@intel.com>

Author: g2flyer

libos/test/regression/meson.build

@@ -84,6 +84,7 @@ tests = {
         'c_args': '-fopenmp',
         'link_args': '-fopenmp',
     },
+    'pf_rollback': {},
     'pipe': {},
     'pipe_nonblocking': {},
     'pipe_ocloexec': {},

libos/test/regression/pf_rollback.c

@@ -0,0 +1,78 @@
+/* SPDX-License-Identifier: LGPL-3.0-or-later */
+/* Copyright (C) 2024 Intel Corporation
+ *                    Paweł Marczewski <pawel@invisiblethingslab.com>
+ *                    Michael Steiner <michael.steiner@intel.com>
+ */
+
+/*
+ * Tests for rollback protection of protected (encrypted) files
+ */
+
+#include <assert.h>
+#include <err.h>
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "common.h"
+#include "rw_file.h"
+
+static const char message1[]     = "first message\n";
+static const size_t message1_len = sizeof(message1) - 1;
+
+static const char message2[]     = "second message\n";
+static const size_t message2_len = sizeof(message2) - 1;
+
+static_assert(sizeof(message1) != sizeof(message2), "the messages should have different lengths");
+
+/*  TODO: eventually remove below copy/paste/extract heap
+static int create_file(const char* path, const char* str, size_t len) {
+    int fd = open(path, O_RDWR | O_CREAT | O_TRUNC, 0600);
+    if (fd < 0)
+        err(1, "open %s", path);
+
+    ssize_t n = posix_fd_write(fd, str, len);
+    if (n < 0)
+        errx(1, "posix_fd_write %s", path);
+    if ((size_t)n != len)
+        errx(1, "written less bytes than expected into %s", path);
+
+    if (rename(path, path) != 0)
+        err(1, "rename");
+
+    if (unlink(path) != 0)
+        err(1, "unlink %s", path);
+
+    if (close(fd) != 0)
+        err(1, "close %s", path);
+
+}
+*/
+
+/* dummy functions which are gdb break-point targets */
+static void save_file() {}
+static void reset_file() {}
+static void delete_file() {}
+static void delete_second_file() {}
+
+static void test_test(const char* dir) {
+    save_file();
+    reset_file();
+    delete_file();
+    delete_second_file();
+}
+
+int main(int argc, char* argv[]) {
+    setbuf(stdout, NULL);
+    setbuf(stderr, NULL);
+
+    if (argc != 2)
+        errx(1, "Usage: %s <dir>", argv[0]);
+
+    const char* dir = argv[1];
+
+    test_test(dir);
+    printf("TEST OK\n");
+    return 0;
+}

libos/test/regression/pf_rollback.gdb

@@ -0,0 +1,63 @@
+set breakpoint pending on
+set pagination off
+set backtrace past-main on
+
+# We want to check what happens in the child process after fork()
+set follow-fork-mode child
+
+# Cannot detach after fork because of some bug in SGX version of GDB (GDB would segfault)
+set detach-on-fork off
+
+break save_file
+commands
+  python print(f"BREAK: {gdb.selected_frame().older().name()} in {gdb.selected_frame().name()}"),
+
+  # TODO: save file
+  # shell echo "WRITING NEW CONTENT IN FORK_AND_ACCESS_FILE_TESTFILE" > fork_and_access_file_testfile
+
+  continue
+end
+
+break reset_file
+commands
+  python print(f"BREAK: {gdb.selected_frame().older().name()} in {gdb.selected_frame().name()}"),
+
+  # TODO: reset file
+  # shell echo "WRITING NEW CONTENT IN FORK_AND_ACCESS_FILE_TESTFILE" > fork_and_access_file_testfile
+
+  continue
+end
+
+break delete_file
+commands
+  python print(f"BREAK: {gdb.selected_frame().older().name()} in {gdb.selected_frame().name()}"),
+
+  # TODO: delete file
+  # shell echo "WRITING NEW CONTENT IN FORK_AND_ACCESS_FILE_TESTFILE" > fork_and_access_file_testfile
+
+  continue
+end
+
+break delete_second_file
+commands
+  python print(f"BREAK: {gdb.selected_frame().older().name()} in {gdb.selected_frame().name()}"),
+
+  # TODO: delete second file
+  # shell echo "WRITING NEW CONTENT IN FORK_AND_ACCESS_FILE_TESTFILE" > fork_and_access_file_testfile
+
+  continue
+end
+
+break die_or_inf_loop
+commands
+  echo EXITING GDB WITH A GRAMINE ERROR\n
+  quit
+end
+
+break exit
+commands
+  echo EXITING GDB WITHOUT A GRAMINE ERROR\n
+  quit
+end
+
+run

libos/test/regression/pf_rollback.manifest.template

@@ -0,0 +1,30 @@
+loader.entrypoint = "file:{{ gramine.libos }}"
+libos.entrypoint = "{{ entrypoint }}"
+
+loader.env.LD_LIBRARY_PATH = "/lib:{{ arch_libdir }}:/usr/{{ arch_libdir }}"
+loader.insecure__use_cmdline_argv = true
+
+fs.mounts = [
+  { path = "/lib", uri = "file:{{ gramine.runtimedir(libc) }}" },
+  { path = "/{{ entrypoint }}", uri = "file:{{ binary_dir }}/{{ entrypoint }}" },
+  { path = "/bin", uri = "file:/bin" },
+
+  { type = "encrypted", protection_mode = "strict", path = "/tmp_enc/pm_strict", uri = "file:tmp_enc", key_name = "my_custom_key" },
+  { type = "encrypted", protection_mode = "strict", path = "/tmp_enc/pm_non_strict", uri = "file:tmp_enc", key_name = "my_custom_key" },
+  { type = "encrypted", protection_mode = "strict", path = "/tmp_enc/pm_none", uri = "file:tmp_enc", key_name = "my_custom_key" },
+]
+
+sgx.max_threads = {{ '1' if env.get('EDMM', '0') == '1' else '16' }}
+sgx.debug = true
+sgx.edmm_enable = {{ 'true' if env.get('EDMM', '0') == '1' else 'false' }}
+
+
+sgx.trusted_files = [
+  "file:{{ gramine.libos }}",
+  "file:{{ gramine.runtimedir(libc) }}/",
+  "file:{{ binary_dir }}/{{ entrypoint }}",
+]
+
+# See the `keys.c` test.
+fs.insecure__keys.default = "ffeeddccbbaa99887766554433221100"
+fs.insecure__keys.my_custom_key = "00112233445566778899aabbccddeeff"

libos/test/regression/test_libos.py

@@ -1385,6 +1385,27 @@ def test_020_gdb_fork_and_access_file_bug(self):
             with open('fork_and_access_file_testfile', 'w') as f:
                 f.write('fork_and_access_file_testfile')
 
+    def test_030_gdb_pf_rollback(self):
+        # To run this test manually, use:
+        # GDB=1 GDB_SCRIPT=pf_rollback.gdb gramine-[sgx|direct] pf_rollback
+        #
+        # This test checks rollback protection.
+        try:
+            stdout, _ = self.run_gdb(['pf_rollback', '/tmp_enc/pm_strict'], 'pf_rollback.gdb')
+            # TODO (MST): This test is not yet implemented.
+            # - loop for /tmp_enc/pm_strict, /tmp_enc/pm_non_strict, /tmp_enc/pm_none
+            # - define expected sequence for each test
+            self.assertIn('BREAK: test_test in save_file', stdout)
+            self.assertIn('BREAK: test_test in reset_file', stdout)
+            self.assertIn('BREAK: test_test in delete_file', stdout)
+            self.assertIn('BREAK: test_test in delete_second_file', stdout)
+            self.assertIn('EXITING GDB WITHOUT A GRAMINE ERROR', stdout)
+            self.assertNotIn('EXITING GDB WITH A GRAMINE ERROR', stdout)
+        finally:
+            # restore the trusted file contents (modified by the GDB script in this test)
+            with open('fork_and_access_file_testfile', 'w') as f:
+                f.write('fork_and_access_file_testfile')
+
 class TC_80_Socket(RegressionTestCase):
     def test_000_getsockopt(self):
         stdout, _ = self.run_binary(['getsockopt'])

libos/test/regression/tests.toml

@@ -83,6 +83,7 @@ manifests = [
   "munmap",
   "open_opath",
   "openmp",
+  "pf_rollback",
   "pipe",
   "pipe_nonblocking",
   "pipe_ocloexec",

libos/test/regression/tests_musl.toml

@@ -85,6 +85,7 @@ manifests = [
   "munmap",
   "open_opath",
   "openmp",
+  "pf_rollback",
   "pipe",
   "pipe_nonblocking",
   "pipe_ocloexec",