Greg Kroah-Hartman
598cf27219
Link: https://lore.kernel.org/r/20260217200002.683975158@linuxfoundation.org Tested-by: Florian Fainelli <florian.fainelli@broadcom.com> Tested-by: Takeshi Ogasawara <takeshi.ogasawara@futuring-girl.com> Tested-by: Peter Schneider <pschneider1968@googlemail.com> Tested-by: Jon Hunter <jonathanh@nvidia.com> Tested-by: Salvatore Bonaccorso <carnil@debian.org> Tested-by: Brett A C Sheffield <bacs@librecast.net> Tested-by: Mark Brown <broonie@kernel.org> Tested-by: Luna Jernberg <droidbittin@gmail.com> Tested-by: Ronald Warsow <rwarsow@gmx.de> Tested-by: Justin M. Forbes <jforbes@fedoraproject.org> Tested-by: Ron Economos <re@w6rz.net> Tested-by: Miguel Ojeda <ojeda@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
90 lines
2.7 KiB
C
90 lines
2.7 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Copyright (c) 2025, Google LLC.
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* Pasha Tatashin <pasha.tatashin@soleen.com>
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*
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* A simple selftest to validate the end-to-end lifecycle of a LUO session
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* across a single kexec reboot.
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*/
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#include "luo_test_utils.h"
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#define TEST_SESSION_NAME "test-session"
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#define TEST_MEMFD_TOKEN 0x1A
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#define TEST_MEMFD_DATA "hello kexec world"
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/* Constants for the state-tracking mechanism, specific to this test file. */
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#define STATE_SESSION_NAME "kexec_simple_state"
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#define STATE_MEMFD_TOKEN 999
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/* Stage 1: Executed before the kexec reboot. */
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static void run_stage_1(int luo_fd)
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{
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int session_fd;
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ksft_print_msg("[STAGE 1] Starting pre-kexec setup...\n");
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ksft_print_msg("[STAGE 1] Creating state file for next stage (2)...\n");
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create_state_file(luo_fd, STATE_SESSION_NAME, STATE_MEMFD_TOKEN, 2);
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ksft_print_msg("[STAGE 1] Creating session '%s' and preserving memfd...\n",
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TEST_SESSION_NAME);
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session_fd = luo_create_session(luo_fd, TEST_SESSION_NAME);
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if (session_fd < 0)
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fail_exit("luo_create_session for '%s'", TEST_SESSION_NAME);
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if (create_and_preserve_memfd(session_fd, TEST_MEMFD_TOKEN,
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TEST_MEMFD_DATA) < 0) {
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fail_exit("create_and_preserve_memfd for token %#x",
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TEST_MEMFD_TOKEN);
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}
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close(luo_fd);
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daemonize_and_wait();
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}
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/* Stage 2: Executed after the kexec reboot. */
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static void run_stage_2(int luo_fd, int state_session_fd)
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{
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int session_fd, mfd, stage;
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ksft_print_msg("[STAGE 2] Starting post-kexec verification...\n");
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restore_and_read_stage(state_session_fd, STATE_MEMFD_TOKEN, &stage);
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if (stage != 2)
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fail_exit("Expected stage 2, but state file contains %d", stage);
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ksft_print_msg("[STAGE 2] Retrieving session '%s'...\n", TEST_SESSION_NAME);
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session_fd = luo_retrieve_session(luo_fd, TEST_SESSION_NAME);
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if (session_fd < 0)
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fail_exit("luo_retrieve_session for '%s'", TEST_SESSION_NAME);
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ksft_print_msg("[STAGE 2] Restoring and verifying memfd (token %#x)...\n",
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TEST_MEMFD_TOKEN);
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mfd = restore_and_verify_memfd(session_fd, TEST_MEMFD_TOKEN,
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TEST_MEMFD_DATA);
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if (mfd < 0)
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fail_exit("restore_and_verify_memfd for token %#x", TEST_MEMFD_TOKEN);
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close(mfd);
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ksft_print_msg("[STAGE 2] Test data verified successfully.\n");
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ksft_print_msg("[STAGE 2] Finalizing test session...\n");
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if (luo_session_finish(session_fd) < 0)
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fail_exit("luo_session_finish for test session");
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close(session_fd);
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ksft_print_msg("[STAGE 2] Finalizing state session...\n");
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if (luo_session_finish(state_session_fd) < 0)
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fail_exit("luo_session_finish for state session");
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close(state_session_fd);
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ksft_print_msg("\n--- SIMPLE KEXEC TEST PASSED ---\n");
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}
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int main(int argc, char *argv[])
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{
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return luo_test(argc, argv, STATE_SESSION_NAME,
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run_stage_1, run_stage_2);
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}
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