[V5,09/10] syscalls/fspick: New tests

diff --git a/runtest/syscalls b/runtest/syscalls
index 32b3f36e4dcc..ce27f835c42e 100644
--- a/runtest/syscalls
+++ b/runtest/syscalls
@@ -350,6 +350,9 @@  fsmount02 fsmount02
 fsopen01 fsopen01
 fsopen02 fsopen02
 
+fspick01 fspick01
+fspick02 fspick02
+
 fstat02 fstat02
 fstat02_64 fstat02_64
 fstat03 fstat03
diff --git a/testcases/kernel/syscalls/fspick/.gitignore b/testcases/kernel/syscalls/fspick/.gitignore
new file mode 100644
index 000000000000..a8aa61dce18b
--- /dev/null
+++ b/testcases/kernel/syscalls/fspick/.gitignore
@@ -0,0 +1,2 @@ 
+/fspick01
+/fspick02
diff --git a/testcases/kernel/syscalls/fspick/Makefile b/testcases/kernel/syscalls/fspick/Makefile
new file mode 100644
index 000000000000..5ea7d67db123
--- /dev/null
+++ b/testcases/kernel/syscalls/fspick/Makefile
@@ -0,0 +1,6 @@ 
+# SPDX-License-Identifier: GPL-2.0-or-later
+
+top_srcdir		?= ../../../..
+
+include $(top_srcdir)/include/mk/testcases.mk
+include $(top_srcdir)/include/mk/generic_leaf_target.mk
diff --git a/testcases/kernel/syscalls/fspick/fspick.h b/testcases/kernel/syscalls/fspick/fspick.h
new file mode 100644
index 000000000000..62864355da06
--- /dev/null
+++ b/testcases/kernel/syscalls/fspick/fspick.h
@@ -0,0 +1,60 @@ 
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (c) 2020 Viresh Kumar <viresh.kumar@linaro.org>
+ */
+
+#ifndef FSPICK_H__
+#define FSPICK_H__
+
+#define MNTPOINT	"mntpoint"
+
+static int ismounted;
+
+static void cleanup(void)
+{
+	if (ismounted)
+		SAFE_UMOUNT(MNTPOINT);
+}
+
+static void setup(void)
+{
+	int fd, fsmfd;
+
+	fsopen_supported_by_kernel();
+
+	TEST(fd = fsopen(tst_device->fs_type, 0));
+	if (fd == -1)
+		tst_brk(TBROK | TERRNO, "fsopen() failed");
+
+	TEST(fsconfig(fd, FSCONFIG_SET_STRING, "source", tst_device->dev, 0));
+	if (TST_RET == -1) {
+		SAFE_CLOSE(fd);
+		tst_brk(TBROK | TERRNO, "fsconfig() failed");
+	}
+
+	TEST(fsconfig(fd, FSCONFIG_CMD_CREATE, NULL, NULL, 0));
+	if (TST_RET == -1) {
+		SAFE_CLOSE(fd);
+		tst_brk(TBROK | TERRNO, "fsconfig() failed");
+	}
+
+	TEST(fsmfd = fsmount(fd, 0, 0));
+	SAFE_CLOSE(fd);
+
+	if (fsmfd == -1)
+		tst_brk(TBROK | TERRNO, "fsmount() failed");
+
+	TEST(move_mount(fsmfd, "", AT_FDCWD, MNTPOINT,
+			MOVE_MOUNT_F_EMPTY_PATH));
+	SAFE_CLOSE(fsmfd);
+
+	if (TST_RET == -1)
+		tst_brk(TBROK | TERRNO, "move_mount() failed");
+
+	ismounted = 1;
+
+	if (!tst_is_mounted(MNTPOINT))
+		tst_brk(TBROK | TERRNO, "device not mounted");
+}
+
+#endif /* FSPICK_H__ */
diff --git a/testcases/kernel/syscalls/fspick/fspick01.c b/testcases/kernel/syscalls/fspick/fspick01.c
new file mode 100644
index 000000000000..4e1daeaee14a
--- /dev/null
+++ b/testcases/kernel/syscalls/fspick/fspick01.c
@@ -0,0 +1,62 @@ 
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (c) 2020 Viresh Kumar <viresh.kumar@linaro.org>
+ *
+ * Basic fspick() test.
+ */
+#include "tst_test.h"
+#include "lapi/fsmount.h"
+#include "fspick.h"
+
+#define TCASE_ENTRY(_flags)	{.name = "Flag " #_flags, .flags = _flags}
+
+static struct tcase {
+	char *name;
+	unsigned int flags;
+} tcases[] = {
+	TCASE_ENTRY(FSPICK_CLOEXEC),
+	TCASE_ENTRY(FSPICK_SYMLINK_NOFOLLOW),
+	TCASE_ENTRY(FSPICK_NO_AUTOMOUNT),
+	TCASE_ENTRY(FSPICK_EMPTY_PATH),
+};
+
+static void run(unsigned int n)
+{
+	struct tcase *tc = &tcases[n];
+	int fspick_fd;
+
+	TEST(fspick_fd = fspick(AT_FDCWD, MNTPOINT, tc->flags));
+	if (fspick_fd == -1) {
+		tst_res(TFAIL | TERRNO, "fspick() failed");
+		return;
+	}
+
+	TEST(fsconfig(fspick_fd, FSCONFIG_SET_STRING, "sync", "false", 0));
+	if (TST_RET == -1) {
+		tst_res(TFAIL | TERRNO, "fsconfig() failed");
+		goto out;
+	}
+
+	TEST(fsconfig(fspick_fd, FSCONFIG_SET_FLAG, "ro", NULL, 0));
+	if (TST_RET == -1) {
+		tst_res(TFAIL | TERRNO, "fsconfig() failed");
+		goto out;
+	}
+
+	tst_res(TPASS, "%s: fspick() passed", tc->name);
+
+out:
+	SAFE_CLOSE(fspick_fd);
+}
+
+static struct tst_test test = {
+	.tcnt = ARRAY_SIZE(tcases),
+	.test = run,
+	.setup = setup,
+	.cleanup = cleanup,
+	.needs_root = 1,
+	.format_device = 1,
+	.mntpoint = MNTPOINT,
+	.all_filesystems = 1,
+	.dev_fs_flags = TST_FS_SKIP_FUSE,
+};
diff --git a/testcases/kernel/syscalls/fspick/fspick02.c b/testcases/kernel/syscalls/fspick/fspick02.c
new file mode 100644
index 000000000000..dc8f153ccc48
--- /dev/null
+++ b/testcases/kernel/syscalls/fspick/fspick02.c
@@ -0,0 +1,54 @@ 
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (c) 2020 Viresh Kumar <viresh.kumar@linaro.org>
+ *
+ * Basic fspick() failure tests.
+ */
+#include "tst_test.h"
+#include "lapi/fsmount.h"
+#include "fspick.h"
+
+static struct tcase {
+	char *name;
+	int dirfd;
+	const char *pathname;
+	unsigned int flags;
+	int exp_errno;
+} tcases[] = {
+	{"invalid-fd", -1, MNTPOINT, FSPICK_NO_AUTOMOUNT | FSPICK_CLOEXEC, EBADF},
+	{"invalid-path", AT_FDCWD, "invalid", FSPICK_NO_AUTOMOUNT | FSPICK_CLOEXEC, ENOENT},
+	{"invalid-flags", AT_FDCWD, MNTPOINT, 0x10, EINVAL},
+};
+
+static void run(unsigned int n)
+{
+	struct tcase *tc = &tcases[n];
+
+	TEST(fspick(tc->dirfd, tc->pathname, tc->flags));
+	if (TST_RET != -1) {
+		SAFE_CLOSE(TST_RET);
+		tst_res(TFAIL, "%s: fspick() succeeded unexpectedly (index: %d)",
+			tc->name, n);
+		return;
+	}
+
+	if (tc->exp_errno != TST_ERR) {
+		tst_res(TFAIL | TTERRNO, "%s: fspick() should fail with %s",
+			tc->name, tst_strerrno(tc->exp_errno));
+		return;
+	}
+
+	tst_res(TPASS | TTERRNO, "%s: fspick() failed as expected", tc->name);
+}
+
+static struct tst_test test = {
+	.tcnt = ARRAY_SIZE(tcases),
+	.test = run,
+	.setup = setup,
+	.cleanup = cleanup,
+	.needs_root = 1,
+	.format_device = 1,
+	.mntpoint = MNTPOINT,
+	.all_filesystems = 1,
+	.dev_fs_flags = TST_FS_SKIP_FUSE,
+};