1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * Copyright (c) 2022 SUSE LLC <[email protected]>
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 <[email protected]>
24 * Date: Mon Feb 18 09:07:02 2019 +0800
25 *
26 * ext2: support statx syscall
27 *
28 * commit 99652ea56a4186bc5bf8a3721c5353f41b35ebcb
29 * Author: David Howells <[email protected]>
30 * Date: Fri Mar 31 18:31:56 2017 +0100
31 *
32 * ext4: Add statx support
33 *
34 * commit 04a87e3472828f769a93655d7c64a27573bdbc2c
35 * Author: Yonghong Song <[email protected]>
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 <[email protected]>
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 <[email protected]>
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
66 static 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
76 static uint64_t expected_mask;
77
setup(void)78 static 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 Bcachefs, TMPFS, XFS */
100 if (!strcmp(tst_device->fs_type, "bcachefs") || !strcmp(tst_device->fs_type, "tmpfs") ||
101 !strcmp(tst_device->fs_type, "xfs"))
102 expected_mask &= ~STATX_ATTR_COMPRESSED;
103
104 /* Attribute support was added to Btrfs statx() in kernel v4.13 */
105 if (!strcmp(tst_device->fs_type, "btrfs") && tst_kvercmp(4, 13, 0) < 0)
106 tst_brk(TCONF, "statx() attributes not supported on Btrfs");
107 }
108
run(void)109 static void run(void)
110 {
111 size_t i;
112 struct statx buf;
113
114 TST_EXP_PASS_SILENT(statx(AT_FDCWD, TESTDIR, 0, 0, &buf));
115
116 for (i = 0; i < ARRAY_SIZE(attr_list); i++) {
117 if (!(expected_mask & attr_list[i].attr))
118 continue;
119
120 if (buf.stx_attributes_mask & attr_list[i].attr)
121 tst_res(TPASS, "%s is supported", attr_list[i].name);
122 else
123 tst_res(TFAIL, "%s not supported", attr_list[i].name);
124 }
125 }
126
127 static struct tst_test test = {
128 .test_all = run,
129 .setup = setup,
130 .needs_root = 1,
131 .all_filesystems = 1,
132 .mount_device = 1,
133 .mntpoint = MOUNT_POINT,
134 .min_kver = "4.11",
135 .skip_filesystems = (const char *const[]) {
136 "fuse",
137 "ntfs",
138 NULL
139 },
140 .tags = (const struct tst_tag[]) {
141 {"linux-git", "93bc420ed41d"},
142 {"linux-git", "99652ea56a41"},
143 {"linux-git", "04a87e347282"},
144 {"linux-git", "5f955f26f3d4"},
145 {"linux-git", "e408e695f5f1"},
146 {}
147 },
148 };
149