[LTP] [PATCH v1] chdir01.c: set umask to 0 within setup

[Wei Gao]

When system's default umask is 0077, this will trigger following issues:
chdir01.c:100: TFAIL: nobody: chdir("subdir") returned unexpected value -1: EACCES (13)

Signed-off-by: Wei Gao <wegao@suse.com>
---
 testcases/kernel/syscalls/chdir/chdir01.c | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/testcases/kernel/syscalls/chdir/chdir01.c b/testcases/kernel/syscalls/chdir/chdir01.c
index d50a8f50c..97a707199 100644
--- a/testcases/kernel/syscalls/chdir/chdir01.c
+++ b/testcases/kernel/syscalls/chdir/chdir01.c
@@ -56,12 +56,15 @@ static struct test_case {
 
 static void setup(void)
 {
+	mode_t old_umask = umask(0);
+
+	SAFE_MKFS(tst_device->dev, tst_device->fs_type, NULL, NULL);
+	SAFE_MOUNT(tst_device->dev, MNTPOINT, tst_device->fs_type, 0, 0);
+
 	char *cwd;
 	int fd;
 	struct stat statbuf;
 
-	umask(0);
-
 	cwd = SAFE_GETCWD(NULL, 0);
 	workdir = SAFE_MALLOC(strlen(cwd) + strlen(MNTPOINT) + 2);
 	sprintf(workdir, "%s/%s", cwd, MNTPOINT);
@@ -89,6 +92,7 @@ static void setup(void)
 
 	if (!ltpuser)
 		ltpuser = SAFE_GETPWNAM(TESTUSER);
+	umask(old_umask);
 }
 
 static void check_result(const char *user, const char *name, int retval,
@@ -146,13 +150,14 @@ static void cleanup(void)
 {
 	SAFE_CHDIR("..");
 	free(workdir);
+	SAFE_UMOUNT(MNTPOINT);
 }
 
 static struct tst_test test = {
 	.needs_root = 1,
-	.mount_device = 1,
 	.mntpoint = MNTPOINT,
 	.all_filesystems = 1,
+	.needs_device = 1,
 	.test = run,
 	.tcnt = ARRAY_SIZE(testcase_list),
 	.setup = setup,
-- 
2.35.3