zdtm/static/maps06: removed hardcoded page-size

zdtm/static/maps06 failed on systems with different page-size than 4096.
This changes maps06 to use sysconf(_SC_PAGESIZE) instead.
Signed-off-by: Adrian Reber <areber@redhat.com>
Reviewed-by: Dmitry Safonov <0x7f454c46@gmail.com>
Signed-off-by: Andrei Vagin <avagin@virtuozzo.com>

test/zdtm/static/maps06.c

@@ -10,12 +10,12 @@ const char *test_author	= "Andrei Vagin <avagin@openvz.org>";
 char *filename;
 TEST_OPTION(filename, string, "file name", 1);
 
-#define TEST_SIZE 10240
-
 int main(int argc, char ** argv)
 {
 	void *start;
 	int fd, i;
+	int ps = sysconf(_SC_PAGESIZE);
+	int test_size;
 
 	test_init(argc, argv);
 
@@ -23,21 +23,26 @@ int main(int argc, char ** argv)
 	if (fd < 0)
 		return 1;
 
-	ftruncate(fd, 4096);
+	ftruncate(fd, ps);
+
+	if (ps == 0x1000)
+		test_size = 10240;
+	else
+		test_size = 512;
 
-	start = mmap(0, 4096 * TEST_SIZE * 4, PROT_NONE, MAP_PRIVATE | MAP_ANONYMOUS, 0, 0);
+	start = mmap(0, ps * test_size * 4, PROT_NONE, MAP_PRIVATE | MAP_ANONYMOUS, 0, 0);
 	if (start == MAP_FAILED)
 		return 1;
 
-	for (i = 0; i < TEST_SIZE; i++) {
+	for (i = 0; i < test_size; i++) {
 		int *addr;
-		addr = mmap(start + i * 3 * 4096, 4096,
+		addr = mmap(start + i * 3 * ps, ps,
 				PROT_READ | PROT_WRITE,
 				MAP_PRIVATE | MAP_FILE | MAP_FIXED, fd, 0);
 		if (addr == MAP_FAILED)
 			return 1;
 		addr[0] = i * 2;
-		addr = mmap(start + (i * 3 + 1) * 4096, 4096,
+		addr = mmap(start + (i * 3 + 1) * ps, ps,
 				PROT_READ | PROT_WRITE,
 				MAP_PRIVATE | MAP_ANONYMOUS | MAP_FIXED, -1, 0);
 		if (addr == MAP_FAILED)
@@ -49,12 +54,12 @@ int main(int argc, char ** argv)
 
 	test_waitsig();
 
-	for (i = 0; i < TEST_SIZE; i++) {
+	for (i = 0; i < test_size; i++) {
 		int *addr;
-		addr = start + i * 3 * 4096;
+		addr = start + i * 3 * ps;
 		if (addr[0] != i * 2)
 			fail();
-		addr = start + (i * 3  + 1) * 4096;
+		addr = start + (i * 3  + 1) * ps;
 		if (addr[0] != i)
 			fail();
 	}