[LTP] [PATCH v2 2/7] Add ioctl_ficlone01 test

Andrea Cervesato
2024-07-23T07:16:22Z

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

This test verifies that ioctl() FICLONE feature clones file content
from one file to an another.

Signed-off-by: Andrea Cervesato <andrea.cervesato@suse.com>
---
runtest/syscalls | 2 +
testcases/kernel/syscalls/ioctl/.gitignore | 1 +
testcases/kernel/syscalls/ioctl/ioctl_ficlone01.c | 122 ++++++++++++++++++++++
3 files changed, 125 insertions(+)

diff --git a/runtest/syscalls b/runtest/syscalls
index 27eb9a86b..f05386ba2 100644
--- a/runtest/syscalls
+++ b/runtest/syscalls
@@ -592,6 +592,8 @@ ioctl_ns07 ioctl_ns07

ioctl_sg01 ioctl_sg01

+ioctl_ficlone01 ioctl_ficlone01
+
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 5fff7a61d..5404aa93f 100644
--- a/testcases/kernel/syscalls/ioctl/.gitignore
+++ b/testcases/kernel/syscalls/ioctl/.gitignore
@@ -22,3 +22,4 @@
/ioctl_ns06
/ioctl_ns07
/ioctl_sg01
+/ioctl_ficlone01
diff --git a/testcases/kernel/syscalls/ioctl/ioctl_ficlone01.c b/testcases/kernel/syscalls/ioctl/ioctl_ficlone01.c
new file mode 100644
index 000000000..bb3dc8c6c
--- /dev/null
+++ b/testcases/kernel/syscalls/ioctl/ioctl_ficlone01.c
@@ -0,0 +1,122 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (C) 2024 Andrea Cervesato andrea.cervesato@suse.com
+ */
+
+/*\
+ * [Description]
+ *
+ * This test verifies that ioctl() FICLONE feature clones file content from
+ * one file to an another.
+ *
+ * [Algorithm]
+ *
+ * - populate source file
+ * - clone source content inside destination file
+ * - verify that source content has been cloned inside destination file
+ * - write a single byte inside destination file
+ * - verify that source content didn't change while destination did
+ */
+
+#include "tst_test.h"
+#include "lapi/fs.h"
+
+#define MNTPOINT "mnt"
+#define SRCPATH MNTPOINT "/file0"
+#define DSTPATH MNTPOINT "/file1"
+
+#define FILEDATA "qwerty"
+#define FILESIZE sizeof(FILEDATA)
+
+static int src_fd = -1;
+static int dst_fd = -1;
+
+static void run(void)
+{
+ char buff[FILESIZE];
+ struct stat src_stat;
+ struct stat dst_stat;
+
+ src_fd = SAFE_OPEN(SRCPATH, O_CREAT | O_RDWR, 0640);
+ dst_fd = SAFE_OPEN(DSTPATH, O_CREAT | O_RDWR, 0640);
+
+ tst_res(TINFO, "Writing data inside src file");
+
+ SAFE_WRITE(1, src_fd, FILEDATA, FILESIZE);
+ SAFE_FSYNC(src_fd);
+
+ TST_EXP_PASS(ioctl(dst_fd, FICLONE, src_fd));
+ if (TST_RET == -1)
+ return;
+
+ SAFE_FSYNC(dst_fd);
+
+ tst_res(TINFO, "Verifing that data is cloned between files");
+
+ SAFE_FSTAT(src_fd, &src_stat);
+ SAFE_FSTAT(dst_fd, &dst_stat);
+
+ TST_EXP_EXPR(src_stat.st_ino != dst_stat.st_ino,
+ "inode is different. %lu != %lu",
+ src_stat.st_ino,
+ dst_stat.st_ino);
+
+ TST_EXP_EQ_LI(src_stat.st_size, dst_stat.st_size);
+
+ SAFE_READ(0, dst_fd, buff, FILESIZE);
+
+ TST_EXP_EXPR(!strncmp(buff, FILEDATA, FILESIZE),
+ "dst file has the src file content (\"%s\" - %ld bytes)",
+ buff,
+ FILESIZE);
+
+ tst_res(TINFO, "Writing a byte inside dst file");
+
+ SAFE_LSEEK(dst_fd, 0, SEEK_SET);
+ SAFE_WRITE(SAFE_WRITE_ALL, dst_fd, "+", 1);
+ SAFE_FSYNC(dst_fd);
+
+ tst_res(TINFO, "Verifing that src file content didn't change");
+
+ SAFE_FSTAT(src_fd, &src_stat);
+ SAFE_FSTAT(dst_fd, &dst_stat);
+
+ TST_EXP_EQ_LI(dst_stat.st_size, src_stat.st_size);
+
+ SAFE_READ(0, src_fd, buff, FILESIZE);
+
+ TST_EXP_EXPR(!strncmp(buff, FILEDATA, FILESIZE),
+ "src file content didn't change");
+
+ SAFE_CLOSE(src_fd);
+ SAFE_CLOSE(dst_fd);
+
+ SAFE_UNLINK(SRCPATH);
+ SAFE_UNLINK(DSTPATH);
+}
+
+static void cleanup(void)
+{
+ if (src_fd != -1)
+ SAFE_CLOSE(src_fd);
+
+ if (dst_fd != -1)
+ SAFE_CLOSE(dst_fd);
+}
+
+static struct tst_test test = {
+ .test_all = run,
+ .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},
+ },
+ {}
+ }
+};

--
2.43.0