From: Liao Huangjie <liaohj.jy@fujitsu.com>
To: <ltp@lists.linux.it>
Subject: [LTP] [PATCH] syscalls/read05: Test read with zero count
Date: Mon, 25 Jul 2022 15:02:44 +0800 [thread overview]
Message-ID: <1658732564-31728-1-git-send-email-liaohj.jy@fujitsu.com> (raw)
From: Huangjie Liao <liaohj.jy@fujitsu.com>
Signed-off-by: Huangjie Liao <liaohj.jy@fujitsu.com>
---
runtest/syscalls | 1 +
testcases/kernel/syscalls/read/.gitignore | 1 +
testcases/kernel/syscalls/read/read05.c | 44 +++++++++++++++++++++++++++++++
3 files changed, 46 insertions(+)
create mode 100644 testcases/kernel/syscalls/read/read05.c
diff --git a/runtest/syscalls b/runtest/syscalls
index 3847e8a..0bd47fc 100644
--- a/runtest/syscalls
+++ b/runtest/syscalls
@@ -1094,6 +1094,7 @@ read01 read01
read02 read02
read03 read03
read04 read04
+read05 read05
readahead01 readahead01
readahead02 readahead02
diff --git a/testcases/kernel/syscalls/read/.gitignore b/testcases/kernel/syscalls/read/.gitignore
index e89c008..69d97b3 100644
--- a/testcases/kernel/syscalls/read/.gitignore
+++ b/testcases/kernel/syscalls/read/.gitignore
@@ -2,3 +2,4 @@
/read02
/read03
/read04
+/read05
diff --git a/testcases/kernel/syscalls/read/read05.c b/testcases/kernel/syscalls/read/read05.c
new file mode 100644
index 0000000..83ac763
--- /dev/null
+++ b/testcases/kernel/syscalls/read/read05.c
@@ -0,0 +1,44 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (c) 2022 FUJITSU LIMITED. All Rights Reserved.
+ * Author: Huangjie Liao <liaohj.jy@fujitsu.com>
+ */
+
+/*\
+ * [Description]
+ *
+ * In the absence of any errors, a read() with a count of 0 returns zero.
+ */
+
+#include <errno.h>
+#include "tst_test.h"
+
+#define SIZE 512
+
+static int fd;
+static char buf[SIZE];
+
+static void verify_read(void)
+{
+ TST_EXP_VAL(read(fd, buf, 0), 0);
+}
+
+static void setup(void)
+{
+ memset(buf, '*', SIZE);
+ fd = SAFE_OPEN("testfile", O_RDWR | O_CREAT, 0700);
+ SAFE_WRITE(1, fd, buf, SIZE);
+}
+
+static void cleanup(void)
+{
+ if (fd > 0)
+ SAFE_CLOSE(fd);
+}
+
+static struct tst_test test = {
+ .test_all = verify_read,
+ .setup = setup,
+ .cleanup = cleanup,
+ .needs_tmpdir = 1,
+};
--
1.8.3.1
--
Mailing list info: https://lists.linux.it/listinfo/ltp
next reply other threads:[~2022-07-25 7:03 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-07-25 7:02 Liao Huangjie [this message]
2022-07-26 9:52 ` [LTP] [PATCH] syscalls/read05: Test read with zero count Richard Palethorpe
2022-08-19 8:59 ` liaohj.jy
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