[LTP] [PATCH v3] Add ioctl_ficlone04 test

[Andrea Cervesato]

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

This test verifies that ioctl() FICLONE/FICLONERANGE feature raises
the right error according with bad file descriptors.

Signed-off-by: Andrea Cervesato <andrea.cervesato@suse.com>
---
This testing suite is testing ioctl() FICLONE and FICLONERANGE
functionalities. In particular, file clone and error codes.
---
Changes in v3:
- ioctl_ficlone04: use a generic array for expected errors
- Link to v2: https://lore.kernel.org/r/20240723-ioctl_ficlone-v2-0-33075bbc117f@suse.com

Changes in v2:
- add fallback definitions
- algorithm steps using '-'
- avoid assigning -1 to file descriptors after close()
- use SAFE_UNLINK() instead of remove()
- enable both xfs and btrs for all tests
- Link to v1: https://lore.kernel.org/r/20240530-ioctl_ficlone-v1-0-fa96f07d0fca@suse.com
---
 testcases/kernel/syscalls/ioctl/.gitignore        |  1 +
 testcases/kernel/syscalls/ioctl/ioctl_ficlone04.c | 55 +++++++++++++++++++++++
 2 files changed, 56 insertions(+)

diff --git a/testcases/kernel/syscalls/ioctl/.gitignore b/testcases/kernel/syscalls/ioctl/.gitignore
index 9f995b1ad..1f099ff95 100644
--- a/testcases/kernel/syscalls/ioctl/.gitignore
+++ b/testcases/kernel/syscalls/ioctl/.gitignore
@@ -25,5 +25,6 @@
 /ioctl_ficlone01
 /ioctl_ficlone02
 /ioctl_ficlone03
+/ioctl_ficlone04
 /ioctl_ficlonerange01
 /ioctl_ficlonerange02
diff --git a/testcases/kernel/syscalls/ioctl/ioctl_ficlone04.c b/testcases/kernel/syscalls/ioctl/ioctl_ficlone04.c
new file mode 100644
index 000000000..8420c269c
--- /dev/null
+++ b/testcases/kernel/syscalls/ioctl/ioctl_ficlone04.c
@@ -0,0 +1,55 @@
+// 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 raises the right
+ * error according with bad file descriptors.
+ */
+
+#include "tst_test.h"
+#include "lapi/fs.h"
+
+static void test_bad_fd(struct tst_fd *fd_src, struct tst_fd *fd_dst)
+{
+	if (fd_src->type == TST_FD_FILE && fd_src->type == fd_dst->type) {
+		tst_res(TCONF, "Skipping file: SUCCESS");
+		return;
+	}
+
+	if (fd_src->type == TST_FD_MEMFD && fd_src->type == fd_dst->type) {
+		tst_res(TCONF, "Skipping memory: EOPNOTSUPP");
+		return;
+	}
+
+	int exp_errnos[] = {
+		EISDIR,
+		EBADF,
+		EINVAL,
+		EXDEV,
+	};
+
+	TST_EXP_FAIL2_ARR(ioctl(fd_dst->fd, FICLONE, fd_src->fd),
+		exp_errnos, ARRAY_SIZE(exp_errnos),
+		"ioctl(%s, FICLONE, %s)",
+		tst_fd_desc(fd_src),
+		tst_fd_desc(fd_dst));
+}
+
+static void run(void)
+{
+	TST_FD_FOREACH(fd_src) {
+		TST_FD_FOREACH(fd_dst)
+			test_bad_fd(&fd_src, &fd_dst);
+	}
+}
+
+static struct tst_test test = {
+	.test_all = run,
+	.min_kver = "4.5",
+	.needs_root = 1,
+	.needs_tmpdir = 1,
+};

---
base-commit: c68112b0774bf4f13bfb7b121ecc6671d15d133e
change-id: 20240529-ioctl_ficlone-95c603f71d53

Best regards,
-- 
Andrea Cervesato <andrea.cervesato@suse.com>