Add tests for PID namespace translationAkosUzonyi/pidns

* Makefile.am (CODE_COVERAGE_IGNORE_PATTERN): Add test directories.
* tests/.gitignore: Add new test executables.
* tests/Makefile.am (check_PROGRAMS): Add new test executables.
(DECODER_TESTS) Add new test files.
(libtests_a_SOURCES): Add trie_for_tests.c, xmalloc_for_tests.c.
* tests/gen_tests.in: Add new tests.
* tests/trie_test.c: New file.
* tests/trie_for_tests.c: New file.
* tests/xmalloc_for_tests.c: New file.
* tests/pidns-cache.c: New file.
* tests/pidns-cache.test: New file.
* tests/fcntl--pidns-translation.c: New file.
* tests/fcntl64--pidns-translation.c: New file.
* tests/fork--pidns-translation.awk: New file.
* tests/fork--pidns-translation.c: New file.
* tests/fork--pidns-translation.test: New file.
* tests/getpgrp--pidns-translation.c: New file.
* tests/getpid--pidns-translation.c: New file.
* tests/getsid--pidns-translation.c: New file.
* tests/gettid--pidns-translation.c: New file.
* tests/gettid--pidns-translation.test: New file.
* tests/ioctl_block--pidns-translation.c: New file.
* tests/ioctl_block--pidns-translation.test: New file.
* tests/ioprio--pidns-translation.c: New file.
* tests/kill--pidns-translation.c: New file.
* tests/migrate_pages--pidns-translation.c: New file.
* tests/move_pages--pidns-translation.c: New file.
* tests/net-sockaddr--pidns-translation.c: New file.
* tests/netlink_audit--pidns-translation.c: New file.
* tests/netlink_audit--pidns-translation.test: New file.
* tests/pidfd_open--pidns-translation.c: New file.
* tests/pidfd_send_signal--pidns-translation.c: New file.
* tests/prlimit64--pidns-translation.c: New file.
* tests/process_vm_readv--pidns-translation.c: New file.
* tests/process_vm_writev--pidns-translation.c: New file.
* tests/rt_sigqueueinfo--pidns-translation.c: New file.
* tests/rt_tgsigqueueinfo--pidns-translation.c: New file.
* tests/sched_xetaffinity--pidns-translation.c: New file.
* tests/sched_xetattr--pidns-translation.c: New file.
* tests/sched_xetparam--pidns-translation.c: New file.
* tests/sched_xetscheduler--pidns-translation.c: New file.
* tests/signal_receive--pidns-translation.c: New file.
* tests/so_peercred--pidns-translation.c: New file.
* tests/tkill--pidns-translation.c: New file.
* tests/tgkill--pidns-translation.c: New file.
* tests/xet_robust_list--pidns-translation.c: New file.
* tests/xetpgid--pidns-translation.c: New file.
* tests/xetpriority--pidns-translation.c: New file.
* tests/fcntl-common.c: Print PID translation string after PIDs.
* tests/fcntl.c: Likewise.
* tests/fcntl64.c: Likewise.
* tests/getpgrp.c: Likewise.
* tests/getpid.c: Likewise.
* tests/getsid.c: Likewise.
* tests/gettid.c: Likewise.
* tests/ioctl_block.c: Likewise.
* tests/ioprio.c: Likewise.
* tests/kcmp.c: Likewise.
* tests/kill.c: Likewise.
* tests/migrate_pages.c: Likewise.
* tests/move_pages.c: Likewise.
* tests/net-sockaddr.c: Likewise.
* tests/netlink_audit.c: Likewise.
* tests/pidfd_open.c: Likewise.
* tests/pidfd_send_signal.c: Likewise.
* tests/prlimit64.c: Likewise.
* tests/process_vm_readv_writev.c: Likewise.
* tests/rt_sigqueueinfo.c: Likewise.
* tests/rt_tgsigqueueinfo.c: Likewise.
* tests/sched_xetaffinity.c: Likewise.
* tests/sched_xetattr.c: Likewise.
* tests/sched_xetparam.c: Likewise.
* tests/sched_xetscheduler.c: Likewise.
* tests/signal_receive.c: Likewise.
* tests/so_peercred.c: Likewise.
* tests/tgkill.c: Likewise.
* tests/tkill.c: Likewise.
* tests/xet_robust_list.c: Likewise.
* tests/xetpgid.c: Likewise.
* tests/xetpriority.c: Likewise.

1 files changed, 62 insertions, 0 deletions

diff --git a/tests/pidns-cache.c b/tests/pidns-cache.c
new file mode 100644
index 000000000..6319a7fda
--- /dev/null
+++ b/tests/pidns-cache.c
@@ -0,0 +1,62 @@
+/*
+ * Copyright (c) 2020 The strace developers.
+ * All rights reserved.
+ *
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ */
+
+#include "tests.h"
+#include "scno.h"
+#include "pidns.h"
+
+#if defined __NR_getpid && (!defined __NR_getxpid || __NR_getxpid != __NR_getpid)
+
+# include <stdio.h>
+# include <unistd.h>
+# include <sys/time.h>
+
+# define SYSCALL_COUNT 1000
+
+/**
+ * Max ratio of the execution time with and without pidns translation.
+ */
+# define MAX_TIME_RATIO 20
+
+static long
+execute_syscalls(void)
+{
+	/* Load our PID in the cache */
+	syscall(__NR_getpid);
+
+	struct timeval stop, start;
+	gettimeofday(&start, NULL);
+
+	for (int i = 0; i < SYSCALL_COUNT; i++)
+	       syscall(__NR_getpid);
+
+	gettimeofday(&stop, NULL);
+
+	return (stop.tv_usec - start.tv_usec) +
+		(stop.tv_sec - start.tv_sec) * 1000000;
+}
+
+int
+main(void)
+{
+	long max_us = execute_syscalls() * MAX_TIME_RATIO;
+
+	pidns_test_init();
+
+	long us = execute_syscalls();
+	if (us > max_us)
+		error_msg_and_fail("pidns translation took too long: %ld us "
+		                   "(max: %ld us)", us, max_us);
+
+	return 0;
+}
+
+#else
+
+SKIP_MAIN_UNDEFINED("__NR_getpid")
+
+#endif