Signed-off-by: Xing Gu <gux.f...@cn.fujitsu.com>
---
testcases/kernel/syscalls/renameat/renameat01.c | 116 +++++++++++++++++++++++-
1 file changed, 114 insertions(+), 2 deletions(-)
diff --git a/testcases/kernel/syscalls/renameat/renameat01.c
b/testcases/kernel/syscalls/renameat/renameat01.c
index 7601e0c..8a2773f 100644
--- a/testcases/kernel/syscalls/renameat/renameat01.c
+++ b/testcases/kernel/syscalls/renameat/renameat01.c
@@ -25,6 +25,15 @@
* newdirfd.
* 2) renameat(2) returns -1 and sets errno to EBADF if olddirfd
* or newdirfd is not a valid file descriptor.
+ * 3) renameat(2) returns -1 and sets errno to ELOOP if too many
+ * symbolic links were encountered in resolving oldpath or
+ * newpath.
+ * 4) renameat(2) returns -1 and sets errno to EROFS if the file
+ * is on a read-only file system.
+ * 5) renameat(2) returns -1 and sets errno to EMLINK if oldpath
+ * already has the maximum number of links to it, or it was a
+ * directory and the directory containing newpath has the maximum
+ * number of links.
*/
#define _GNU_SOURCE
@@ -38,6 +47,7 @@
#include <errno.h>
#include <string.h>
#include <signal.h>
+#include <sys/mount.h>
#include "test.h"
#include "usctest.h"
@@ -49,14 +59,24 @@
#define DIR_MODE (S_IRWXU | S_IRWXG | S_IRWXO)
#define FILE_MODE (S_IRWXU | S_IRWXG | S_IRWXO)
+#define MNTPOINT "mntpoint"
#define TESTDIR "testdir"
#define NEW_TESTDIR "newtestdir"
+#define TESTDIR2 "/loopdir"
+#define NEW_TESTDIR2 "newloopdir"
+#define TESTDIR3 "mntpoint/mlinkdir"
+#define NEW_TESTDIR3 "mntpoint/testmlink/newmlinkdir"
#define TESTFILE "testfile"
#define NEW_TESTFILE "newtestfile"
#define TESTFILE2 "testdir/testfile"
#define NEW_TESTFILE2 "newtestdir/newtestfile"
#define TESTFILE3 "/tmp/testfile3"
#define NEW_TESTFILE3 "/tmp/newtestfile3"
+#define TESTFILE4 "mntpoint/rofile"
+#define NEW_TESTFILE4 "mntpoint/newrofile"
+
+static char looppathname[sizeof(TESTDIR2) * 43] = ".";
+static char *device;
static void setup(void);
static void cleanup(void);
@@ -65,14 +85,18 @@ static void test_success2(void);
static void test_success3(void);
static void test_enotdir(void);
static void test_ebadf(void);
+static void test_eloop(void);
+static void test_erofs(void);
+static void test_emlink(void);
static void check_and_print(int expected_errno);
static void (*testfunc[])(void) = { test_success1, test_success2,
- test_success3, test_enotdir, test_ebadf };
+ test_success3, test_enotdir, test_ebadf,
+ test_eloop, test_erofs, test_emlink };
char *TCID = "renameat01";
int TST_TOTAL = ARRAY_SIZE(testfunc);
-static int exp_enos[] = { ENOTDIR, EBADF, 0 };
+static int exp_enos[] = { ENOTDIR, EBADF, ELOOP, EROFS, EMLINK, 0 };
int main(int ac, char **av)
{
@@ -100,12 +124,28 @@ int main(int ac, char **av)
static void setup(void)
{
+ int i, ret;
+ char lname[PATH_MAX];
+ unsigned long long link_count = 0;
+ const char *const opts[] = { "-O", "^dir_index", NULL };
+
if ((tst_kvercmp(2, 6, 16)) < 0) {
tst_resm(TCONF, "This test can only run on kernels "
"that are 2.6.16 and higher");
return;
}
+ tst_require_root(NULL);
+
+ device = getenv("LTP_BIG_DEV");
+ if (device == NULL) {
+ tst_resm(TCONF, "you must specify a big"
+ "blockdevice(>500MB)");
+ return;
+ } else {
+ tst_mkfs(NULL, device, "ext4", opts);
+ }
+
tst_sig(NOFORK, DEF_HANDLER, cleanup);
tst_tmpdir();
@@ -119,6 +159,46 @@ static void setup(void)
SAFE_MKDIR(cleanup, NEW_TESTDIR, DIR_MODE);
SAFE_TOUCH(cleanup, TESTFILE3, FILE_MODE, NULL);
+
+ /*
+ * NOTE: the ELOOP test is written based on that the
+ * consecutive symlinks limit in kernel is hardwired
+ * to 40.
+ */
+ SAFE_MKDIR(cleanup, "loopdir", DIR_MODE);
+ SAFE_SYMLINK(cleanup, "../loopdir", "loopdir/loopdir");
+ for (i = 0; i < 43; i++)
+ strcat(looppathname, TESTDIR2);
+
+ SAFE_MKDIR(cleanup, MNTPOINT, DIR_MODE);
+
+ if (mount(device, MNTPOINT, "ext4", 0, NULL) < 0) {
+ tst_brkm(TBROK | TERRNO, cleanup,
+ "mount device:%s failed", device);
+ }
+
+ SAFE_TOUCH(cleanup, TESTFILE4, FILE_MODE, NULL);
+
+ SAFE_MKDIR(cleanup, TESTDIR3, DIR_MODE);
+ SAFE_MKDIR(cleanup, "mntpoint/testmlink", DIR_MODE);
+ while (1) {
+ sprintf(lname, "mntpoint/testmlink/mlink%lld", ++link_count);
+ ret = mkdir(lname, DIR_MODE);
+ if (ret == -1) {
+ switch (errno) {
+ case EMLINK:
+ tst_resm(TINFO, "for ext4 the max links is"
+ " %lld", link_count + 1);
+ break;
+ default:
+ tst_brkm(TCONF | TERRNO, cleanup,
+ "we do not hit the maximum number of "
+ "links to dir test_parent_dir in ext4."
+ "Unexpected error:");
+ }
+ break;
+ }
+ }
}
static void test_success1(void)
@@ -207,6 +287,35 @@ static void test_ebadf(void)
check_and_print(EBADF);
}
+static void test_eloop(void)
+{
+ TEST(renameat(AT_FDCWD, looppathname, AT_FDCWD, NEW_TESTDIR2));
+ check_and_print(ELOOP);
+}
+
+static void test_erofs(void)
+{
+ if (mount(device, MNTPOINT, "ext4", MS_REMOUNT | MS_RDONLY,
+ NULL) < 0) {
+ tst_brkm(TBROK | TERRNO, cleanup,
+ "mount device:%s failed", device);
+ }
+
+ TEST(renameat(AT_FDCWD, TESTFILE4, AT_FDCWD, NEW_TESTFILE4));
+ check_and_print(EROFS);
+}
+
+static void test_emlink(void)
+{
+ if (mount(device, MNTPOINT, "ext4", MS_REMOUNT, NULL) < 0) {
+ tst_brkm(TBROK | TERRNO, cleanup,
+ "mount device:%s failed", device);
+ }
+
+ TEST(renameat(AT_FDCWD, TESTDIR3, AT_FDCWD, NEW_TESTDIR3));
+ check_and_print(EMLINK);
+}
+
static void check_and_print(int expected_errno)
{
if (TEST_ERRNO == expected_errno) {
@@ -223,5 +332,8 @@ static void cleanup(void)
{
TEST_CLEANUP;
+ if (umount(MNTPOINT) == -1)
+ tst_resm(TWARN | TERRNO, "umount device:%s failed", device);
+
tst_rmdir();
}
--
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