1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * Copyright (C) 2024 Andrea Cervesato andrea.cervesato@suse.com
4 */
5
6 /*\
7 * [Description]
8 *
9 * This test verifies that ioctl() FICLONE feature clones file content from
10 * one file to an another.
11 *
12 * [Algorithm]
13 *
14 * - populate source file
15 * - clone source content inside destination file
16 * - verify that source content has been cloned inside destination file
17 * - write a single byte inside destination file
18 * - verify that source content didn't change while destination did
19 */
20
21 #include "tst_test.h"
22 #include "lapi/ficlone.h"
23
24 #define MNTPOINT "mnt"
25 #define SRCPATH MNTPOINT "/file0"
26 #define DSTPATH MNTPOINT "/file1"
27
28 #define FILEDATA "qwerty"
29 #define FILESIZE sizeof(FILEDATA)
30
31 static int src_fd = -1;
32 static int dst_fd = -1;
33
run(void)34 static void run(void)
35 {
36 char buff[FILESIZE];
37 struct stat src_stat;
38 struct stat dst_stat;
39
40 src_fd = SAFE_OPEN(SRCPATH, O_CREAT | O_RDWR, 0640);
41 dst_fd = SAFE_OPEN(DSTPATH, O_CREAT | O_RDWR, 0640);
42
43 tst_res(TINFO, "Writing data inside src file");
44
45 SAFE_WRITE(1, src_fd, FILEDATA, FILESIZE);
46 SAFE_FSYNC(src_fd);
47
48 TST_EXP_PASS(ioctl(dst_fd, FICLONE, src_fd));
49 if (TST_RET == -1)
50 return;
51
52 SAFE_FSYNC(dst_fd);
53
54 tst_res(TINFO, "Verifing that data is cloned between files");
55
56 SAFE_FSTAT(src_fd, &src_stat);
57 SAFE_FSTAT(dst_fd, &dst_stat);
58
59 TST_EXP_EXPR(src_stat.st_ino != dst_stat.st_ino,
60 "inode is different. %lu != %lu",
61 src_stat.st_ino,
62 dst_stat.st_ino);
63
64 TST_EXP_EQ_LI(src_stat.st_size, dst_stat.st_size);
65
66 SAFE_READ(0, dst_fd, buff, FILESIZE);
67
68 TST_EXP_EXPR(!strncmp(buff, FILEDATA, FILESIZE),
69 "dst file has the src file content (\"%s\" - %ld bytes)",
70 buff,
71 FILESIZE);
72
73 tst_res(TINFO, "Writing a byte inside dst file");
74
75 SAFE_LSEEK(dst_fd, 0, SEEK_SET);
76 SAFE_WRITE(SAFE_WRITE_ALL, dst_fd, "+", 1);
77 SAFE_FSYNC(dst_fd);
78
79 tst_res(TINFO, "Verifing that src file content didn't change");
80
81 SAFE_FSTAT(src_fd, &src_stat);
82 SAFE_FSTAT(dst_fd, &dst_stat);
83
84 TST_EXP_EQ_LI(dst_stat.st_size, src_stat.st_size);
85
86 SAFE_READ(0, src_fd, buff, FILESIZE);
87
88 TST_EXP_EXPR(!strncmp(buff, FILEDATA, FILESIZE),
89 "src file content didn't change");
90
91 SAFE_CLOSE(src_fd);
92 SAFE_CLOSE(dst_fd);
93
94 SAFE_UNLINK(SRCPATH);
95 SAFE_UNLINK(DSTPATH);
96 }
97
cleanup(void)98 static void cleanup(void)
99 {
100 if (src_fd != -1)
101 SAFE_CLOSE(src_fd);
102
103 if (dst_fd != -1)
104 SAFE_CLOSE(dst_fd);
105 }
106
107 static struct tst_test test = {
108 .test_all = run,
109 .cleanup = cleanup,
110 .min_kver = "4.5",
111 .needs_root = 1,
112 .mount_device = 1,
113 .mntpoint = MNTPOINT,
114 .filesystems = (struct tst_fs []) {
115 {.type = "btrfs"},
116 {.type = "bcachefs"},
117 {
118 .type = "xfs",
119 .min_kver = "4.16",
120 .mkfs_ver = "mkfs.xfs >= 1.5.0",
121 .mkfs_opts = (const char *const []) {"-m", "reflink=1", NULL},
122 },
123 {}
124 }
125 };
126