From: Yang Xu via ltp <ltp@lists.linux.it>
To: ltp@lists.linux.it
Subject: [LTP] [PATCH v2] gethostname: Add negative test for gethostname
Date: Fri, 19 Apr 2024 04:25:49 -0400 [thread overview]
Message-ID: <20240419082549.25476-1-xuyang2018.jy@fujitsu.com> (raw)
Add negative cases for gethostname(), when errno is ENAMETOOLONG
Signed-off-by: Yang Xu <xuyang2018.jy@fujitsu.com>
---
runtest/syscalls | 1 +
.../kernel/syscalls/gethostname/.gitignore | 1 +
.../syscalls/gethostname/gethostname02.c | 31 +++++++++++++++++++
3 files changed, 33 insertions(+)
create mode 100644 testcases/kernel/syscalls/gethostname/gethostname02.c
diff --git a/runtest/syscalls b/runtest/syscalls
index de4f5a633..cc1e39c05 100644
--- a/runtest/syscalls
+++ b/runtest/syscalls
@@ -477,6 +477,7 @@ gethostbyname_r01 gethostbyname_r01
gethostid01 gethostid01
gethostname01 gethostname01
+gethostname02 gethostname02
getitimer01 getitimer01
getitimer02 getitimer02
diff --git a/testcases/kernel/syscalls/gethostname/.gitignore b/testcases/kernel/syscalls/gethostname/.gitignore
index d09d5d288..d6e4cffcb 100644
--- a/testcases/kernel/syscalls/gethostname/.gitignore
+++ b/testcases/kernel/syscalls/gethostname/.gitignore
@@ -1 +1,2 @@
/gethostname01
+/gethostname02
diff --git a/testcases/kernel/syscalls/gethostname/gethostname02.c b/testcases/kernel/syscalls/gethostname/gethostname02.c
new file mode 100644
index 000000000..250e5f2fd
--- /dev/null
+++ b/testcases/kernel/syscalls/gethostname/gethostname02.c
@@ -0,0 +1,31 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (c) 2024 FUJITSU LIMITED. All Rights Reserved.
+ * Author: Yang Xu <xuyang2018.jy@fujitsu.com>
+ */
+
+/*\
+ * [Description]
+ *
+ * Verify that gethostname(2) fails with
+ *
+ * - ENAMETOOLONG when len is smaller than the actual size
+ */
+
+#include "tst_test.h"
+
+static void verify_gethostname(void)
+{
+ char hostname[HOST_NAME_MAX];
+ int real_length;
+
+ SAFE_GETHOSTNAME(hostname, sizeof(hostname));
+ real_length = strlen(hostname);
+
+ TST_EXP_FAIL(gethostname(hostname, real_length - 1), ENAMETOOLONG,
+ "len is smaller than the actual size");
+}
+
+static struct tst_test test = {
+ .test_all = verify_gethostname,
+};
--
2.39.3
--
Mailing list info: https://lists.linux.it/listinfo/ltp
next reply other threads:[~2024-04-19 9:00 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-04-19 8:25 Yang Xu via ltp [this message]
2024-04-19 14:04 ` [LTP] [PATCH v2] gethostname: Add negative test for gethostname Avinesh Kumar
2024-04-22 7:37 ` Li Wang
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