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Sat, 18 Apr 2026 09:34:25 -0700 (PDT) Received: from localhost ([2a01:4b00:d036:ae00:e054:93f2:97bf:84c6]) by smtp.gmail.com with UTF8SMTPSA id ffacd0b85a97d-43fe4e4d5b1sm15836381f8f.30.2026.04.18.09.34.24 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 18 Apr 2026 09:34:24 -0700 (PDT) From: luca.boccassi@gmail.com To: kexec@lists.infradead.org Cc: linux-mm@kvack.org, graf@amazon.com, rppt@kernel.org, pasha.tatashin@soleen.com, pratyush@kernel.org, brauner@kernel.org, linux-kernel@vger.kernel.org, Luca Boccassi Subject: [PATCH v8 6/6] selftests/liveupdate: add test cases for LIVEUPDATE_SESSION_GET_NAME Date: Sat, 18 Apr 2026 17:28:23 +0100 Message-ID: <20260418163358.2304490-7-luca.boccassi@gmail.com> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20260418163358.2304490-1-luca.boccassi@gmail.com> References: <20260418163358.2304490-1-luca.boccassi@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Stat-Signature: y4ebymjdn1btqqwquwbm9p9eg5nnftnf X-Rspam-User: X-Rspamd-Queue-Id: B9FDA1C000F X-Rspamd-Server: rspam05 X-HE-Tag: 1776530066-711335 X-HE-Meta: U2FsdGVkX1+bJNe02umrBPG6eQDtESKF88VQXRxvGQTMblb9rcwv5viKc5LrZ2ehfho112NkynvSfibkmRJx4SK1GU4NAtJqUzc0pDFux7JpMgOrPAYxnD0WBLWhi2L69rYAhDEBNzdy/oTpN28UyV8/AAAzgjWXWOziOV906KX9Q9xxsyPn40lDxkWPhutZvS+VgeaUJ4k1ZighAOSUNCHb6j4lpBdeMVnElB2Mc9JRAKqD2Bekq9SjGOIBfGLlbmZSgXAgb6EguUC+ekEeM3T2nXLNvFaE58AzyUXV4JsgD6xZEXiMxXr7LbPd9uVaQhbUGkBusnjzEQhrBYgXnkL9N7te4YQbyZyu3g3kf3ckHzFArngbz10s/RVvfou4pAK9xsdp7LJqv4NSiCchga7/cfFBpaNbqY5AB00FAXCB915nFtAIsg7xCsCMHtK2qzchVOBkbef/XCfqy00xMomig5K8HYEB/ZUu6REW+pIxzVxdl39IdY4/LcYTKnityNyB3LWm1ogAn2tdX9WM6cm8MLrb2AdXpu479apJzHGgYy4d53Sz7ZUccjhmyQjuk3WhbYve9C7tl31bgrHyoarE00dv6GcKBKnCDX3QtIDXr61pWArho8ypGFhkr5pC3t1an8bHGVtfITKfG6gifo1tWYQHd3LuOg7C+tMF6kprUfmCXa5flUU7pFLAfguwLmkwhKCzeIb9PMWHFdWhvkRvEDSnHbY/U1q95X6Ps7coHRzQXvi4CpDcoELpJxph/3uLLHWAkK9YqfeYMmvZobhVdG9xrL+N+h1UOv4YZ2Kqj8QZAI+HjrbTxJpEbdbT5sbmwLtygZzW9BL6yDRiU7miYg4JkgJlReiulXZTfLU5ZEATLCJmSzAeKUvI4S+a38oD8IQ8UA+P2GmQ59ylm84UKnIyMg3ByS2OqucF/OiGVhzj+o1AuTqzRJ0E4mlu4Ix9kwUE/op0jDOxSC2 xR7YiNe1 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 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: From: Luca Boccassi Verify that the new LIVEUPDATE_SESSION_GET_NAME ioctl works as expected via new test cases in the existing liveupdate selftest. Signed-off-by: Luca Boccassi --- .../testing/selftests/liveupdate/liveupdate.c | 71 +++++++++++++++++++ 1 file changed, 71 insertions(+) diff --git a/tools/testing/selftests/liveupdate/liveupdate.c b/tools/testing/selftests/liveupdate/liveupdate.c index 5e99af0cc6e9..c21354dc9b93 100644 --- a/tools/testing/selftests/liveupdate/liveupdate.c +++ b/tools/testing/selftests/liveupdate/liveupdate.c @@ -105,6 +105,22 @@ static int create_session(int lu_fd, const char *name) return args.fd; } +/* Helper function to get a session name via ioctl. */ +static int get_session_name(int session_fd, char *name, size_t name_len) +{ + struct liveupdate_session_get_name args = {}; + + args.size = sizeof(args); + + if (ioctl(session_fd, LIVEUPDATE_SESSION_GET_NAME, &args)) + return -errno; + + strncpy(name, (char *)args.name, name_len - 1); + name[name_len - 1] = '\0'; + + return 0; +} + /* * Test Case: Create Duplicate Session * @@ -427,4 +443,59 @@ TEST_F(liveupdate_device, session_fstat) ASSERT_EQ(close(session_fd2), 0); } +/* + * Test Case: Get Session Name + * + * Verifies that the full session name can be retrieved from a session file + * descriptor via ioctl. + */ +TEST_F(liveupdate_device, get_session_name) +{ + char name_buf[LIVEUPDATE_SESSION_NAME_LENGTH] = {}; + const char *session_name = "get-name-test-session"; + int session_fd; + + self->fd1 = open(LIVEUPDATE_DEV, O_RDWR); + if (self->fd1 < 0 && errno == ENOENT) + SKIP(return, "%s does not exist", LIVEUPDATE_DEV); + ASSERT_GE(self->fd1, 0); + + session_fd = create_session(self->fd1, session_name); + ASSERT_GE(session_fd, 0); + + ASSERT_EQ(get_session_name(session_fd, name_buf, sizeof(name_buf)), 0); + ASSERT_STREQ(name_buf, session_name); + + ASSERT_EQ(close(session_fd), 0); +} + +/* + * Test Case: Get Session Name at Maximum Length + * + * Verifies that a session name using the full LIVEUPDATE_SESSION_NAME_LENGTH + * (minus the null terminator) can be correctly retrieved. + */ +TEST_F(liveupdate_device, get_session_name_max_length) +{ + char name_buf[LIVEUPDATE_SESSION_NAME_LENGTH] = {}; + char long_name[LIVEUPDATE_SESSION_NAME_LENGTH]; + int session_fd; + + memset(long_name, 'A', sizeof(long_name) - 1); + long_name[sizeof(long_name) - 1] = '\0'; + + self->fd1 = open(LIVEUPDATE_DEV, O_RDWR); + if (self->fd1 < 0 && errno == ENOENT) + SKIP(return, "%s does not exist", LIVEUPDATE_DEV); + ASSERT_GE(self->fd1, 0); + + session_fd = create_session(self->fd1, long_name); + ASSERT_GE(session_fd, 0); + + ASSERT_EQ(get_session_name(session_fd, name_buf, sizeof(name_buf)), 0); + ASSERT_STREQ(name_buf, long_name); + + ASSERT_EQ(close(session_fd), 0); +} + TEST_HARNESS_MAIN -- 2.47.3