[LTP] [PATCH v2 4/7] Add ioctl_ficlone03 test

[Andrea Cervesato]

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

This test verifies that ioctl() FICLONE/FICLONERANGE feature correctly
raises exceptions when it's supposed to.

Signed-off-by: Andrea Cervesato <andrea.cervesato@suse.com>
---
 runtest/syscalls                                  |   1 +
 testcases/kernel/syscalls/ioctl/.gitignore        |   1 +
 testcases/kernel/syscalls/ioctl/ioctl_ficlone03.c | 124 ++++++++++++++++++++++
 3 files changed, 126 insertions(+)

diff --git a/runtest/syscalls b/runtest/syscalls
index 48fe85c97..5aef2b97e 100644
--- a/runtest/syscalls
+++ b/runtest/syscalls
@@ -594,6 +594,7 @@ ioctl_sg01 ioctl_sg01
 
 ioctl_ficlone01 ioctl_ficlone01
 ioctl_ficlone02 ioctl_ficlone02
+ioctl_ficlone03 ioctl_ficlone03
 
 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 3d25fdfb2..d0b470714 100644
--- a/testcases/kernel/syscalls/ioctl/.gitignore
+++ b/testcases/kernel/syscalls/ioctl/.gitignore
@@ -24,3 +24,4 @@
 /ioctl_sg01
 /ioctl_ficlone01
 /ioctl_ficlone02
+/ioctl_ficlone03
diff --git a/testcases/kernel/syscalls/ioctl/ioctl_ficlone03.c b/testcases/kernel/syscalls/ioctl/ioctl_ficlone03.c
new file mode 100644
index 000000000..be069836a
--- /dev/null
+++ b/testcases/kernel/syscalls/ioctl/ioctl_ficlone03.c
@@ -0,0 +1,124 @@
+// 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
+ * exceptions when it's supposed to.
+ */
+
+#include "tst_test.h"
+#include "lapi/fs.h"
+
+#define MNTPOINT "mnt"
+
+static struct file_clone_range *clone_range;
+
+static int invalid_fd = -1;
+static int rw_file = -1;
+static int ro_file = -1;
+static int wo_file = -1;
+static int dir_fd = -1;
+static int immut_fd = -1;
+static int mnt_file = -1;
+
+static struct tcase {
+	int *src_fd;
+	int *dst_fd;
+	int errno_exp;
+	char *msg;
+} tcases[] = {
+	{&invalid_fd, &rw_file, EBADF, "invalid source"},
+	{&rw_file, &invalid_fd, EBADF, "invalid destination"},
+	{&rw_file, &ro_file, EBADF, "read-only destination"},
+	{&wo_file, &rw_file, EBADF, "write-only source"},
+	{&rw_file, &dir_fd, EISDIR, "source is a directory"},
+	{&dir_fd, &rw_file, EISDIR, "destination is a directory"},
+	{&rw_file, &immut_fd, EPERM, "destination is immutable"},
+	{&rw_file, &mnt_file, EXDEV, "destination is on a different mount"},
+	{&mnt_file, &rw_file, EXDEV, "source is on a different mount"},
+};
+
+static void run(unsigned int n)
+{
+	struct tcase *tc = &tcases[n];
+
+	TST_EXP_FAIL(ioctl(*tc->dst_fd, FICLONE, *tc->src_fd),
+		tc->errno_exp,
+		"%s", tc->msg);
+
+	clone_range->src_fd = *tc->src_fd;
+
+	TST_EXP_FAIL(ioctl(*tc->dst_fd, FICLONERANGE, clone_range),
+		tc->errno_exp,
+		"%s", tc->msg);
+}
+
+static void setup(void)
+{
+	int attr;
+	struct stat sb;
+
+	rw_file = SAFE_OPEN("ok_only", O_CREAT | O_RDWR, 0640);
+	ro_file = SAFE_OPEN("rd_only", O_CREAT | O_RDONLY, 0640);
+	wo_file = SAFE_OPEN("rw_only", O_CREAT | O_WRONLY, 0640);
+
+	if (access("mydir", F_OK) == -1)
+		SAFE_MKDIR("mydir", 0640);
+
+	dir_fd = SAFE_OPEN("mydir", O_DIRECTORY, 0640);
+
+	attr = FS_IMMUTABLE_FL;
+	immut_fd = SAFE_OPEN("immutable", O_CREAT | O_RDWR, 0640);
+	SAFE_IOCTL(immut_fd, FS_IOC_SETFLAGS, &attr);
+
+	mnt_file = SAFE_OPEN(MNTPOINT"/file", O_CREAT | O_RDWR, 0640);
+
+	SAFE_STAT(MNTPOINT, &sb);
+
+	clone_range->src_offset = 0;
+	clone_range->src_length = sb.st_blksize;
+	clone_range->dest_offset = 0;
+}
+
+static void cleanup(void)
+{
+	int attr;
+
+	SAFE_IOCTL(immut_fd, FS_IOC_GETFLAGS, &attr);
+	attr &= ~FS_IMMUTABLE_FL;
+	SAFE_IOCTL(immut_fd, FS_IOC_SETFLAGS, &attr);
+	SAFE_CLOSE(immut_fd);
+
+	SAFE_CLOSE(rw_file);
+	SAFE_CLOSE(ro_file);
+	SAFE_CLOSE(wo_file);
+	SAFE_CLOSE(dir_fd);
+	SAFE_CLOSE(mnt_file);
+}
+
+static struct tst_test test = {
+	.test = run,
+	.tcnt = ARRAY_SIZE(tcases),
+	.setup = setup,
+	.cleanup = cleanup,
+	.min_kver = "4.5",
+	.needs_root = 1,
+	.mount_device = 1,
+	.mntpoint = MNTPOINT,
+	.filesystems = (struct tst_fs []) {
+		{.type = "btrfs"},
+		{
+			.type = "xfs",
+			.mkfs_opts = (const char *const []) {"-m", "reflink=1", NULL},
+		},
+		{}
+	},
+	.bufs = (struct tst_buffers []) {
+		{&clone_range, .size = sizeof(struct file_clone_range)},
+		{},
+	}
+};

-- 
2.43.0