[LTP] [PATCH 11/33] keyctl19: Test KEYCTL_MOVE with same source and destination

[Andrea Cervesato <andrea.cervesato@suse.de>]

From: Andrea Cervesato <andrea.cervesato@suse.com>

Test KEYCTL_MOVE when the source keyring equals the destination
keyring: verify the operation succeeds as a no-op and the key
remains linked in the keyring.

Signed-off-by: Andrea Cervesato <andrea.cervesato@suse.com>
---
 runtest/syscalls                            |  1 +
 testcases/kernel/syscalls/keyctl/.gitignore |  1 +
 testcases/kernel/syscalls/keyctl/keyctl19.c | 43 +++++++++++++++++++++++++++++
 3 files changed, 45 insertions(+)

diff --git a/runtest/syscalls b/runtest/syscalls
index 895dd0fc4..1935bee31 100644
--- a/runtest/syscalls
+++ b/runtest/syscalls
@@ -736,6 +736,7 @@ keyctl15 keyctl15
 keyctl16 keyctl16
 keyctl17 keyctl17
 keyctl18 keyctl18
+keyctl19 keyctl19
 
 kcmp01 kcmp01
 kcmp02 kcmp02
diff --git a/testcases/kernel/syscalls/keyctl/.gitignore b/testcases/kernel/syscalls/keyctl/.gitignore
index 808cd2d23..f32107923 100644
--- a/testcases/kernel/syscalls/keyctl/.gitignore
+++ b/testcases/kernel/syscalls/keyctl/.gitignore
@@ -16,3 +16,4 @@
 /keyctl16
 /keyctl17
 /keyctl18
+/keyctl19
diff --git a/testcases/kernel/syscalls/keyctl/keyctl19.c b/testcases/kernel/syscalls/keyctl/keyctl19.c
new file mode 100644
index 000000000..389ad7603
--- /dev/null
+++ b/testcases/kernel/syscalls/keyctl/keyctl19.c
@@ -0,0 +1,43 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (c) 2026 Andrea Cervesato <andrea.cervesato@suse.com>
+ */
+
+/*\
+ * Test ``KEYCTL_MOVE`` of :manpage:`keyctl(2)` with same source and destination.
+ *
+ * [Algorithm]
+ *
+ * - move a key where the source keyring equals the destination keyring,
+ *   verify it is a successful no-op
+ */
+
+#include "keyctl_common.h"
+
+#define RING_DESC	"ltpkeyctl19"
+#define KEY_DESC	"k"
+#define PAYLOAD		"payload"
+
+static key_serial_t ring;
+static key_serial_t key;
+
+static void setup(void)
+{
+	SAFE_KEYCTL(KEYCTL_JOIN_SESSION_KEYRING, 0, 0, 0, 0);
+
+	ring = new_ring(RING_DESC);
+	key = new_user_key(KEY_DESC, PAYLOAD, sizeof(PAYLOAD), ring);
+}
+
+static void run(void)
+{
+	TST_EXP_PASS(keyctl(KEYCTL_MOVE, key, ring, ring, 0));
+
+	TST_EXP_EQ_LI(search_ring(ring, "user", KEY_DESC), key);
+}
+
+static struct tst_test test = {
+	.setup = setup,
+	.test_all = run,
+	.min_kver = "5.3",
+};

-- 
2.51.0


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