tests/time.c: use libtests

* tests/time.c: Use SKIP_MAIN_UNDEFINED.
(main): Use perror_msg_and_skip and tail_alloc.

diff --git a/tests/time.c b/tests/time.c
index 1d3632b7926c81593509c77128a5760e91e5c634..f9fde5cb9d14c8928ce58aa0536155fe8e30c3e2 100644 (file)
--- a/tests/time.c
+++ b/tests/time.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2015 Dmitry V. Levin <ldv@altlinux.org>
+ * Copyright (c) 2015-2016 Dmitry V. Levin <ldv@altlinux.org>
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -26,32 +26,25 @@
  */
 
 #include "tests.h"
-#include <time.h>
-#include <stdio.h>
-#include <stdint.h>
-#include <unistd.h>
-#include <sys/mman.h>
 #include <sys/syscall.h>
 
 #ifdef __NR_time
 
+# include <time.h>
+# include <stdio.h>
+# include <stdint.h>
+# include <unistd.h>
+
 int
 main(void)
 {
-       const size_t page_len = sysconf(_SC_PAGESIZE);
-
-       void *p = mmap(NULL, page_len * 2, PROT_READ | PROT_WRITE,
-                      MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
-       if (p == MAP_FAILED || mprotect(p + page_len, page_len, PROT_NONE))
-               return 77;
+       time_t *p = tail_alloc(sizeof(time_t));
+       time_t t = syscall(__NR_time, p);
 
-       time_t *p_t = p + page_len - sizeof(time_t);
-       time_t t = syscall(__NR_time, p_t);
+       if ((time_t) -1 == t)
+               perror_msg_and_skip("time");
 
-       if ((time_t) -1 == t || t != *p_t)
-               return 77;
-
-       printf("time([%jd]) = %jd\n", (intmax_t) t, (intmax_t) t);
+       printf("time([%jd]) = %jd\n", (intmax_t) *p, (intmax_t) t);
 
        puts("+++ exited with 0 +++");
        return 0;
@@ -59,10 +52,6 @@ main(void)
 
 #else
 
-int
-main(void)
-{
-       return 77;
-}
+SKIP_MAIN_UNDEFINED("__NR_time")
 
 #endif