[LTP] [PATCH 5/6] Add file_attr02 test

[Andrea Cervesato]

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

Verify that `file_getattr` is correctly reading filesystems additional
attributes. We are running test on XFS only, since it's the only filesystem
currently implementing the features we need.

Signed-off-by: Andrea Cervesato <andrea.cervesato@suse.com>
---
 runtest/syscalls                                  |  1 +
 testcases/kernel/syscalls/file_attr/.gitignore    |  1 +
 testcases/kernel/syscalls/file_attr/file_attr02.c | 94 +++++++++++++++++++++++
 3 files changed, 96 insertions(+)

diff --git a/runtest/syscalls b/runtest/syscalls
index fed17a38baf0586ec886876b58c04158fa11e8e0..b69e474a6a596359bb1ace30312b55d6bf2b65cc 100644
--- a/runtest/syscalls
+++ b/runtest/syscalls
@@ -247,6 +247,7 @@ fsetxattr01 fsetxattr01
 fsetxattr02 fsetxattr02
 
 file_attr01 file_attr01
+file_attr02 file_attr02
 
 #posix_fadvise test cases
 posix_fadvise01                      posix_fadvise01
diff --git a/testcases/kernel/syscalls/file_attr/.gitignore b/testcases/kernel/syscalls/file_attr/.gitignore
index de06f204d34be482a6401f2a5e7931caa5e3ab12..afe9c2fc9a4218dc032f044c1d317355a784a525 100644
--- a/testcases/kernel/syscalls/file_attr/.gitignore
+++ b/testcases/kernel/syscalls/file_attr/.gitignore
@@ -1 +1,2 @@
 file_attr01
+file_attr02
diff --git a/testcases/kernel/syscalls/file_attr/file_attr02.c b/testcases/kernel/syscalls/file_attr/file_attr02.c
new file mode 100644
index 0000000000000000000000000000000000000000..f8ad8a325966a5c64cdaf45b9fc046e72b89b6fe
--- /dev/null
+++ b/testcases/kernel/syscalls/file_attr/file_attr02.c
@@ -0,0 +1,94 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (C) 2025 SUSE LLC Andrea Cervesato <andrea.cervesato@suse.com>
+ */
+
+/*\
+ * Verify that `file_getattr` is correctly reading filesystems additional
+ * attributes. We are running test on XFS only, since it's the only filesystem
+ * currently implementing the features we need.
+ */
+
+#include "tst_test.h"
+#include "lapi/fs.h"
+#include <linux/fs.h>
+
+#define MNTPOINT "mntpoint"
+#define FILENAME "ltp_file"
+#define BLOCKS 1024
+#define PROJID 16
+
+static int fd = -1;
+static int dfd = -1;
+static struct fsxattr xattr;
+static struct file_attr *attr;
+
+static void run(void)
+{
+	memset(attr, 0, sizeof(*attr));
+
+	TST_EXP_PASS(file_getattr(
+		dfd, FILENAME,
+		attr, FILE_ATTR_SIZE_LATEST,
+		0));
+
+	TST_EXP_EQ_LI(attr->fa_xflags, xattr.fsx_xflags);
+	TST_EXP_EQ_LI(attr->fa_extsize, xattr.fsx_extsize);
+	TST_EXP_EQ_LI(attr->fa_cowextsize, xattr.fsx_cowextsize);
+	TST_EXP_EQ_LI(attr->fa_nextents, xattr.fsx_nextents);
+	TST_EXP_EQ_LI(attr->fa_projid, PROJID);
+	TST_EXP_EQ_LI(attr->fa_projid, xattr.fsx_projid);
+}
+
+static void setup(void)
+{
+	int block_size;
+
+	block_size = tst_dev_block_size(MNTPOINT);
+
+	dfd = SAFE_OPEN(MNTPOINT, O_RDONLY);
+	fd = SAFE_CREAT(MNTPOINT "/" FILENAME, 0777);
+
+	SAFE_IOCTL(fd, FS_IOC_FSGETXATTR, &xattr);
+
+	xattr.fsx_xflags |= FS_XFLAG_EXTSIZE;
+	xattr.fsx_xflags |= FS_XFLAG_COWEXTSIZE;
+	xattr.fsx_extsize = BLOCKS * block_size;
+	xattr.fsx_cowextsize = BLOCKS * block_size;
+	xattr.fsx_projid = PROJID;
+
+	SAFE_IOCTL(fd, FS_IOC_FSSETXATTR, &xattr);
+
+	/* this will force at least one extent to be allocated */
+	SAFE_WRITE(SAFE_WRITE_ALL, fd, "a", 1);
+
+	SAFE_IOCTL(fd, FS_IOC_FSGETXATTR, &xattr);
+	SAFE_CLOSE(fd);
+	fd = -1;
+}
+
+static void cleanup(void)
+{
+	if (fd != -1)
+		SAFE_CLOSE(fd);
+
+	if (dfd != -1)
+		SAFE_CLOSE(dfd);
+}
+
+static struct tst_test test = {
+	.test_all = run,
+	.setup = setup,
+	.cleanup = cleanup,
+	.mntpoint = MNTPOINT,
+	.needs_root = 1,
+	.mount_device = 1,
+	.filesystems = (struct tst_fs []) {
+		{.type = "xfs"},
+		{}
+	},
+	.bufs = (struct tst_buffers []) {
+		{&attr, .size = sizeof(struct file_attr)},
+		{}
+	}
+};

-- 
2.50.1