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charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: ltp-bounces+ltp=archiver.kernel.org@lists.linux.it Sender: "ltp" From: Andrea Cervesato Test KEYCTL_MOVE displacement behavior: verify moving a key without KEYCTL_MOVE_EXCL into a destination holding a matching key displaces the existing key. Signed-off-by: Andrea Cervesato --- runtest/syscalls | 1 + testcases/kernel/syscalls/keyctl/.gitignore | 1 + testcases/kernel/syscalls/keyctl/keyctl20.c | 62 +++++++++++++++++++++++++++++ 3 files changed, 64 insertions(+) diff --git a/runtest/syscalls b/runtest/syscalls index 1935bee31..bfe4090a0 100644 --- a/runtest/syscalls +++ b/runtest/syscalls @@ -737,6 +737,7 @@ keyctl16 keyctl16 keyctl17 keyctl17 keyctl18 keyctl18 keyctl19 keyctl19 +keyctl20 keyctl20 kcmp01 kcmp01 kcmp02 kcmp02 diff --git a/testcases/kernel/syscalls/keyctl/.gitignore b/testcases/kernel/syscalls/keyctl/.gitignore index f32107923..acddfa79e 100644 --- a/testcases/kernel/syscalls/keyctl/.gitignore +++ b/testcases/kernel/syscalls/keyctl/.gitignore @@ -17,3 +17,4 @@ /keyctl17 /keyctl18 /keyctl19 +/keyctl20 diff --git a/testcases/kernel/syscalls/keyctl/keyctl20.c b/testcases/kernel/syscalls/keyctl/keyctl20.c new file mode 100644 index 000000000..6da36fe32 --- /dev/null +++ b/testcases/kernel/syscalls/keyctl/keyctl20.c @@ -0,0 +1,62 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Copyright (c) 2026 Andrea Cervesato + */ + +/*\ + * Test ``KEYCTL_MOVE`` displacement of :manpage:`keyctl(2)`. + * + * [Algorithm] + * + * - move a key without ``KEYCTL_MOVE_EXCL`` into a destination keyring that + * already contains a matching key, verify it displaces the existing key + */ + +#include "keyctl_common.h" + +#define RING_A_DESC "ltpkeyctl20_a" +#define RING_B_DESC "ltpkeyctl20_b" +#define KEY_DESC "k" +#define PAYLOAD "payload" + +static key_serial_t ring_a, ring_b; +static key_serial_t key_a, key_excl; + +static void setup(void) +{ + SAFE_KEYCTL(KEYCTL_JOIN_SESSION_KEYRING, 0, 0, 0, 0); + + ring_a = new_ring(RING_A_DESC); + ring_b = new_ring(RING_B_DESC); + + key_a = new_user_key(KEY_DESC, PAYLOAD, sizeof(PAYLOAD), ring_a); + key_excl = new_user_key(KEY_DESC, PAYLOAD, sizeof(PAYLOAD), ring_b); + + /* Keep key_excl in session keyring so displacement does not destroy it */ + SAFE_KEYCTL(KEYCTL_LINK, key_excl, KEY_SPEC_SESSION_KEYRING, 0, 0); +} + +static void reset_state(void) +{ + SAFE_KEYCTL(KEYCTL_LINK, key_a, ring_a, 0, 0); + TEST(keyctl(KEYCTL_UNLINK, key_a, ring_b, 0, 0)); + if (TST_RET == -1 && TST_ERR != ENOENT) + tst_brk(TBROK | TTERRNO, "failed to unlink key_a from ring_b"); + + SAFE_KEYCTL(KEYCTL_LINK, key_excl, ring_b, 0, 0); +} + +static void run(void) +{ + reset_state(); + + TST_EXP_PASS(keyctl(KEYCTL_MOVE, key_a, ring_a, ring_b, 0)); + + TST_EXP_EQ_LI(search_ring(ring_b, "user", KEY_DESC), key_a); +} + +static struct tst_test test = { + .setup = setup, + .test_all = run, + .min_kver = "5.3", +}; -- 2.51.0 -- Mailing list info: https://lists.linux.it/listinfo/ltp