1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 * Copyright (c) 2022 SUSE LLC <mdoucha@suse.cz>
4 */
5
6/*\
7 * [Description]
8 *
9 * Test whether the kernel properly advertises support for statx() attributes:
10 *
11 * - STATX_ATTR_COMPRESSED: The file is compressed by the filesystem.
12 * - STATX_ATTR_IMMUTABLE: The file cannot be modified.
13 * - STATX_ATTR_APPEND: The file can only be opened in append mode for writing.
14 * - STATX_ATTR_NODUMP: File is not a candidate for backup when a backup
15 *                        program such as dump(8) is run.
16 *
17 * xfs filesystem doesn't support STATX_ATTR_COMPRESSED flag, so we only test
18 * three other flags.
19 *
20 * ext2, ext4, btrfs, xfs and tmpfs support statx syscall since the following commit
21 *
22 *  commit 93bc420ed41df63a18ae794101f7cbf45226a6ef
23 *  Author: yangerkun <yangerkun@huawei.com>
24 *  Date:   Mon Feb 18 09:07:02 2019 +0800
25 *
26 *  ext2: support statx syscall
27 *
28 *  commit 99652ea56a4186bc5bf8a3721c5353f41b35ebcb
29 *  Author: David Howells <dhowells@redhat.com>
30 *  Date:   Fri Mar 31 18:31:56 2017 +0100
31 *
32 *  ext4: Add statx support
33 *
34 *  commit 04a87e3472828f769a93655d7c64a27573bdbc2c
35 *  Author: Yonghong Song <yhs@fb.com>
36 *  Date:   Fri May 12 15:07:43 2017 -0700
37 *
38 *  Btrfs: add statx support
39 *
40 *  commit 5f955f26f3d42d04aba65590a32eb70eedb7f37d
41 *  Author: Darrick J. Wong <darrick.wong@oracle.com>
42 *  Date:   Fri Mar 31 18:32:03 2017 +0100
43 *
44 *  xfs: report crtime and attribute flags to statx
45 *
46 *  commit e408e695f5f1f60d784913afc45ff2c387a5aeb8
47 *  Author: Theodore Ts'o <tytso@mit.edu>
48 *  Date:   Thu Jul 14 21:59:12 2022 -0400
49 *
50 *  mm/shmem: support FS_IOC_[SG]ETFLAGS in tmpfs
51 *
52 */
53
54#define _GNU_SOURCE
55#include <stdlib.h>
56#include "tst_test.h"
57#include "lapi/fs.h"
58#include "lapi/stat.h"
59#include "lapi/fcntl.h"
60
61#define MOUNT_POINT "mntpoint"
62#define TESTDIR MOUNT_POINT "/testdir"
63
64#define ATTR(x) {.attr = x, .name = #x}
65
66static struct {
67	uint64_t attr;
68	const char *name;
69} attr_list[] = {
70	ATTR(STATX_ATTR_COMPRESSED),
71	ATTR(STATX_ATTR_APPEND),
72	ATTR(STATX_ATTR_IMMUTABLE),
73	ATTR(STATX_ATTR_NODUMP)
74};
75
76static uint64_t expected_mask;
77
78static void setup(void)
79{
80	size_t i;
81	int fd;
82
83	SAFE_MKDIR(TESTDIR, 0777);
84
85	/* Check general inode attribute support */
86	fd = SAFE_OPEN(TESTDIR, O_RDONLY | O_DIRECTORY);
87	TEST(ioctl(fd, FS_IOC_GETFLAGS, &i));
88	SAFE_CLOSE(fd);
89
90	if (TST_RET == -1 && TST_ERR == ENOTTY)
91		tst_brk(TCONF | TTERRNO, "Inode attributes not supported");
92
93	if (TST_RET)
94		tst_brk(TBROK | TTERRNO, "Unexpected ioctl() error");
95
96	for (i = 0, expected_mask = 0; i < ARRAY_SIZE(attr_list); i++)
97		expected_mask |= attr_list[i].attr;
98
99	/* STATX_ATTR_COMPRESSED not supported on XFS, TMPFS */
100	if (!strcmp(tst_device->fs_type, "xfs") || !strcmp(tst_device->fs_type, "tmpfs"))
101		expected_mask &= ~STATX_ATTR_COMPRESSED;
102
103	/* Attribute support was added to Btrfs statx() in kernel v4.13 */
104	if (!strcmp(tst_device->fs_type, "btrfs") && tst_kvercmp(4, 13, 0) < 0)
105		tst_brk(TCONF, "statx() attributes not supported on Btrfs");
106}
107
108static void run(void)
109{
110	size_t i;
111	struct statx buf;
112
113	TST_EXP_PASS_SILENT(statx(AT_FDCWD, TESTDIR, 0, 0, &buf));
114
115	for (i = 0; i < ARRAY_SIZE(attr_list); i++) {
116		if (!(expected_mask & attr_list[i].attr))
117			continue;
118
119		if (buf.stx_attributes_mask & attr_list[i].attr)
120			tst_res(TPASS, "%s is supported", attr_list[i].name);
121		else
122			tst_res(TFAIL, "%s not supported", attr_list[i].name);
123	}
124}
125
126static struct tst_test test = {
127	.test_all = run,
128	.setup = setup,
129	.needs_root = 1,
130	.all_filesystems = 1,
131	.mount_device = 1,
132	.mntpoint = MOUNT_POINT,
133	.min_kver = "4.11",
134	.skip_filesystems = (const char *const[]) {
135		"fuse",
136		"ntfs",
137		NULL
138	},
139	.tags = (const struct tst_tag[]) {
140		{"linux-git", "93bc420ed41d"},
141		{"linux-git", "99652ea56a41"},
142		{"linux-git", "04a87e347282"},
143		{"linux-git", "5f955f26f3d4"},
144		{"linux-git", "e408e695f5f1"},
145		{}
146	},
147};
148