New mremap syscall testcase targeting flag MREMAP_FIXED.
Signed-off-by: Jan Stancek <[email protected]>
---
runtest/syscalls | 1 +
testcases/kernel/syscalls/.gitignore | 1 +
testcases/kernel/syscalls/mremap/mremap05.c | 202 +++++++++++++++++++++++++++
3 files changed, 204 insertions(+), 0 deletions(-)
create mode 100644 testcases/kernel/syscalls/mremap/mremap05.c
diff --git a/runtest/syscalls b/runtest/syscalls
index 6973aaa..8f7b5e4 100644
--- a/runtest/syscalls
+++ b/runtest/syscalls
@@ -603,6 +603,7 @@ mremap01 mremap01
mremap02 mremap02
mremap03 mremap03
mremap04 mremap04
+mremap05 mremap05
msgctl01 msgctl01
msgctl02 msgctl02
diff --git a/testcases/kernel/syscalls/.gitignore
b/testcases/kernel/syscalls/.gitignore
index 7df28c2..2fe7be4 100644
--- a/testcases/kernel/syscalls/.gitignore
+++ b/testcases/kernel/syscalls/.gitignore
@@ -541,6 +541,7 @@
/mremap/mremap02
/mremap/mremap03
/mremap/mremap04
+/mremap/mremap05
/msync/msync01
/msync/msync02
/msync/msync03
diff --git a/testcases/kernel/syscalls/mremap/mremap05.c
b/testcases/kernel/syscalls/mremap/mremap05.c
new file mode 100644
index 0000000..b8e1354
--- /dev/null
+++ b/testcases/kernel/syscalls/mremap/mremap05.c
@@ -0,0 +1,202 @@
+/*
+ * Copyright (C) 2012 Linux Test Project, Inc.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of version 2 of the GNU General Public
+ * License as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it would be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ * Further, this software is distributed without any warranty that it
+ * is free of the rightful claim of any third person regarding
+ * infringement or the like. Any license provided herein, whether
+ * implied or otherwise, applies only to this software file. Patent
+ * licenses, if any, provided herein do not apply to combinations of
+ * this program with other software, or any other product whatsoever.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ */
+/*
+ * Test Name: mremap05
+ *
+ * Test Description:
+ * Verify that MREMAP_FIXED fails without MREMAP_MAYMOVE.
+ * Verify that MREMAP_FIXED|MREMAP_MAYMOVE fails if target address
+ * is not page aligned.
+ * Verify that MREMAP_FIXED|MREMAP_MAYMOVE fails if old range
+ * overlaps with new range.
+ * Verify that MREMAP_FIXED|MREMAP_MAYMOVE can move mapping to new address.
+ * Verify that MREMAP_FIXED|MREMAP_MAYMOVE unmaps previous mapping
+ * at the address range specified by new_address and new_size.
+ */
+
+#define _GNU_SOURCE
+#include <sys/mman.h>
+#include <errno.h>
+#include <unistd.h>
+#include "test.h"
+#include "usctest.h"
+
+static int pagesize;
+char *TCID = "mremap05";
+int TST_TOTAL = 1;
+
+static void setup(void);
+static void cleanup(void);
+
+static void free_test_area(void *p, int size)
+{
+ if (munmap(p, size) < 0)
+ tst_brkm(TBROK|TERRNO, cleanup, "get_test_area munmap");
+}
+
+static void *get_test_area(int size, int free_area)
+{
+ void *p;
+ p = mmap(NULL, size, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS,
+ 0, 0);
+ if (p == MAP_FAILED)
+ tst_brkm(TBROK|TERRNO, cleanup, "get_test_area mmap");
+ if (free_area)
+ free_test_area(p, size);
+ return p;
+}
+
+static void *test_mremap(void *old_address, size_t old_size, size_t new_size,
+ int flags, void *new_address, const char *msg, void *exp_ret,
+ int exp_errno)
+{
+ void *ret;
+
+ ret = mremap(old_address, old_size, new_size, flags, new_address);
+ if (ret == exp_ret)
+ if (ret != MAP_FAILED)
+ tst_resm(TPASS, "%s", msg);
+ else
+ if (errno == exp_errno)
+ tst_resm(TPASS, "%s", msg);
+ else
+ tst_resm(TFAIL|TERRNO, "%s", msg);
+ else
+ tst_resm(TFAIL, "%s ret: %p, expected: %p", msg,
+ ret, exp_ret);
+ return ret;
+}
+
+static void test_fixed_require_maymove(void)
+{
+ char *ret, *p1, *p2;
+
+ p1 = get_test_area(pagesize, 0);
+ p2 = get_test_area(pagesize, 1);
+ ret = test_mremap(p1, pagesize, pagesize, MREMAP_FIXED, p2,
+ "MREMAP_FIXED requires MREMAP_MAYMOVE", MAP_FAILED, EINVAL);
+ if (ret == MAP_FAILED)
+ free_test_area(p1, pagesize);
+ else
+ free_test_area(ret, pagesize);
+}
+
+static void test_new_addr_not_aligned(void)
+{
+ char *ret, *p1, *p2;
+
+ p1 = get_test_area(pagesize, 0);
+ p2 = get_test_area(pagesize*2, 1) + 1;
+ ret = test_mremap(p1, pagesize, pagesize, MREMAP_FIXED|MREMAP_MAYMOVE,
+ p2, "new_addr has to be page aligned", MAP_FAILED, EINVAL);
+ if (ret == MAP_FAILED)
+ free_test_area(p1, pagesize);
+ else
+ free_test_area(ret, pagesize);
+}
+
+static void test_old_new_area_overlap(void)
+{
+ char *ret, *p1, *p2;
+
+ p1 = get_test_area(pagesize*2, 0);
+ p2 = p1 + pagesize;
+ ret = test_mremap(p1, pagesize*2, pagesize, MREMAP_FIXED|MREMAP_MAYMOVE,
+ p2, "old/new area must not overlap", MAP_FAILED, EINVAL);
+ if (ret == MAP_FAILED)
+ free_test_area(p1, pagesize*2);
+ else
+ free_test_area(ret, pagesize);
+}
+
+static void test_mremap_fixed_maymove(void)
+{
+ char *ret, *p1, *p2;
+
+ /* mremap to free area */
+ p1 = get_test_area(pagesize, 0);
+ p2 = get_test_area(pagesize, 1);
+ *p1 = 0x1;
+ ret = test_mremap(p1, pagesize, pagesize, MREMAP_FIXED|MREMAP_MAYMOVE,
+ p2, "mremap #1", p2, 0);
+ if (ret == MAP_FAILED) {
+ free_test_area(p1, pagesize);
+ } else {
+ if (*ret == 0x1)
+ tst_resm(TPASS, "mremap #1 value OK");
+ else
+ tst_resm(TFAIL, "mremap #1 value different");
+ free_test_area(ret, pagesize);
+ }
+
+ /* mremap to occupied area */
+ p1 = get_test_area(pagesize, 0);
+ p2 = get_test_area(pagesize, 0);
+ *p1 = 0x1;
+ *p2 = 0x2;
+ ret = test_mremap(p1, pagesize, pagesize, MREMAP_FIXED|MREMAP_MAYMOVE,
+ p2, "mremap #2", p2, 0);
+ if (ret == MAP_FAILED) {
+ free_test_area(p1, pagesize);
+ free_test_area(p2, pagesize);
+ } else {
+ if (*ret == 0x1)
+ tst_resm(TPASS, "mremap #2 value OK");
+ else
+ tst_resm(TFAIL, "mremap #2 value different");
+ free_test_area(ret, pagesize);
+ }
+}
+
+int main(int ac, char **av)
+{
+ char *msg;
+ int lc;
+
+ msg = parse_opts(ac, av, NULL, NULL);
+ if (msg != NULL)
+ tst_brkm(TBROK, NULL, "OPTION PARSING ERROR - %s", msg);
+
+ Tst_count = 0;
+ setup();
+ for (lc = 0; TEST_LOOPING(lc); lc++) {
+ Tst_count = 0;
+ test_fixed_require_maymove();
+ test_new_addr_not_aligned();
+ test_old_new_area_overlap();
+ test_mremap_fixed_maymove();
+ }
+ cleanup();
+ tst_exit();
+}
+
+static void setup(void)
+{
+ pagesize = getpagesize();
+}
+
+static void cleanup(void)
+{
+ TEST_CLEANUP;
+}
--
1.7.1
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