[LTP] [PATCH v2 3/7] Add ioctl_ficlone02 test

[Andrea Cervesato]

From: Andrea Cervesato <andrea.cervesato@suse.com>

This test verifies that ioctl() FICLONE/FICLONERANGE feature
correctly raises EOPNOTSUPP when unsupported filesystem is used.
In particular, filesystems which don't support copy-on-write.

Reviewed-by: Cyril Hrubis <chrubis@suse.cz>
Signed-off-by: Andrea Cervesato <andrea.cervesato@suse.com>
---
 runtest/syscalls                                  |  1 +
 testcases/kernel/syscalls/ioctl/.gitignore        |  1 +
 testcases/kernel/syscalls/ioctl/ioctl_ficlone02.c | 70 +++++++++++++++++++++++
 3 files changed, 72 insertions(+)

diff --git a/runtest/syscalls b/runtest/syscalls
index f05386ba2..48fe85c97 100644
--- a/runtest/syscalls
+++ b/runtest/syscalls
@@ -593,6 +593,7 @@ ioctl_ns07 ioctl_ns07
 ioctl_sg01 ioctl_sg01
 
 ioctl_ficlone01 ioctl_ficlone01
+ioctl_ficlone02 ioctl_ficlone02
 
 inotify_init1_01 inotify_init1_01
 inotify_init1_02 inotify_init1_02
diff --git a/testcases/kernel/syscalls/ioctl/.gitignore b/testcases/kernel/syscalls/ioctl/.gitignore
index 5404aa93f..3d25fdfb2 100644
--- a/testcases/kernel/syscalls/ioctl/.gitignore
+++ b/testcases/kernel/syscalls/ioctl/.gitignore
@@ -23,3 +23,4 @@
 /ioctl_ns07
 /ioctl_sg01
 /ioctl_ficlone01
+/ioctl_ficlone02
diff --git a/testcases/kernel/syscalls/ioctl/ioctl_ficlone02.c b/testcases/kernel/syscalls/ioctl/ioctl_ficlone02.c
new file mode 100644
index 000000000..f6d492026
--- /dev/null
+++ b/testcases/kernel/syscalls/ioctl/ioctl_ficlone02.c
@@ -0,0 +1,70 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (C) 2024 Andrea Cervesato andrea.cervesato@suse.com
+ */
+
+/*\
+ * [Description]
+ *
+ * This test verifies that ioctl() FICLONE/FICLONERANGE feature correctly raises
+ * EOPNOTSUPP when an unsupported filesystem is used. In particular, filesystems
+ * which don't support copy-on-write.
+ */
+
+#include "tst_test.h"
+#include "lapi/fs.h"
+
+#define MNTPOINT "mnt"
+#define SRCPATH MNTPOINT "/file0"
+#define DSTPATH MNTPOINT "/file1"
+
+static struct file_clone_range *clone_range;
+
+static void run(void)
+{
+	int src_fd;
+	int dst_fd;
+
+	src_fd = SAFE_OPEN(SRCPATH, O_CREAT | O_RDWR, 0640);
+	dst_fd = SAFE_OPEN(DSTPATH, O_CREAT | O_RDWR, 0640);
+
+	clone_range->src_fd = src_fd;
+
+	TST_EXP_FAIL(ioctl(dst_fd, FICLONE, src_fd), EOPNOTSUPP);
+	TST_EXP_FAIL(ioctl(dst_fd, FICLONERANGE, clone_range), EOPNOTSUPP);
+
+	SAFE_CLOSE(src_fd);
+	SAFE_CLOSE(dst_fd);
+}
+
+static void setup(void)
+{
+	struct stat sb;
+
+	SAFE_STAT(MNTPOINT, &sb);
+
+	clone_range->src_offset = 0;
+	clone_range->src_length = sb.st_blksize;
+	clone_range->dest_offset = 0;
+}
+
+static struct tst_test test = {
+	.test_all = run,
+	.setup = setup,
+	.min_kver = "4.5",
+	.needs_root = 1,
+	.mount_device = 1,
+	.mntpoint = MNTPOINT,
+	.all_filesystems = 1,
+	.skip_filesystems = (const char *[]) {
+		"btrfs",
+		"overlayfs",
+		"nfs",
+		"xfs",
+		NULL,
+	},
+	.bufs = (struct tst_buffers []) {
+		{&clone_range, .size = sizeof(struct file_clone_range)},
+		{},
+	}
+};

-- 
2.43.0