selftests/liveupdate: add test cases for LIVEUPDATE_SESSION_GET_NAME

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 <luca.boccassi@gmail.com>
Reviewed-by: Pasha Tatashin <pasha.tatashin@soleen.com>
Reviewed-by: Pratyush Yadav <pratyush@kernel.org>
Link: https://lore.kernel.org/r/20260429212221.814107-5-luca.boccassi@gmail.com
Signed-off-by: Pasha Tatashin <pasha.tatashin@soleen.com>
Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org>

diff --git a/tools/testing/selftests/liveupdate/liveupdate.c b/tools/testing/selftests/liveupdate/liveupdate.c
index 90268d86684f5be565f5bb93090f0bd742af96a2..c7d94b9181e120eae053077750c5fa4ef1d3017b 100644 (file)
--- a/tools/testing/selftests/liveupdate/liveupdate.c
+++ b/tools/testing/selftests/liveupdate/liveupdate.c
@@ -102,6 +102,22 @@ 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
  *
@@ -428,4 +444,59 @@ TEST_F(liveupdate_device, create_session_empty_name)
        EXPECT_EQ(session_fd, -EINVAL);
 }
 
+/*
+ * 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