]>
git.ipfire.org Git - thirdparty/systemd.git/blob - src/test/test-copy.c
2 This file is part of systemd
4 Copyright 2014 Ronny Chevalier
6 systemd is free software; you can redistribute it and/or modify it
7 under the terms of the GNU Lesser General Public License as published by
8 the Free Software Foundation; either version 2.1 of the License, or
9 (at your option) any later version.
11 systemd is distributed in the hope that it will be useful, but
12 WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 Lesser General Public License for more details.
16 You should have received a copy of the GNU Lesser General Public License
17 along with systemd; If not, see <http://www.gnu.org/licenses/>.
22 #include "alloc-util.h"
30 #include "path-util.h"
32 #include "string-util.h"
36 static void test_copy_file(void) {
37 _cleanup_free_
char *buf
= NULL
;
38 char fn
[] = "/tmp/test-copy_file.XXXXXX";
39 char fn_copy
[] = "/tmp/test-copy_file.XXXXXX";
43 log_info("%s", __func__
);
45 fd
= mkostemp_safe(fn
, O_RDWR
|O_CLOEXEC
);
49 fd
= mkostemp_safe(fn_copy
, O_RDWR
|O_CLOEXEC
);
53 assert_se(write_string_file(fn
, "foo bar bar bar foo", WRITE_STRING_FILE_CREATE
) == 0);
55 assert_se(copy_file(fn
, fn_copy
, 0, 0644, 0) == 0);
57 assert_se(read_full_file(fn_copy
, &buf
, &sz
) == 0);
58 assert_se(streq(buf
, "foo bar bar bar foo\n"));
65 static void test_copy_file_fd(void) {
66 char in_fn
[] = "/tmp/test-copy-file-fd-XXXXXX";
67 char out_fn
[] = "/tmp/test-copy-file-fd-XXXXXX";
68 _cleanup_close_
int in_fd
= -1, out_fd
= -1;
69 char text
[] = "boohoo\nfoo\n\tbar\n";
72 log_info("%s", __func__
);
74 in_fd
= mkostemp_safe(in_fn
, O_RDWR
);
75 assert_se(in_fd
>= 0);
76 out_fd
= mkostemp_safe(out_fn
, O_RDWR
);
77 assert_se(out_fd
>= 0);
79 assert_se(write_string_file(in_fn
, text
, WRITE_STRING_FILE_CREATE
) == 0);
80 assert_se(copy_file_fd("/a/file/which/does/not/exist/i/guess", out_fd
, true) < 0);
81 assert_se(copy_file_fd(in_fn
, out_fd
, true) >= 0);
82 assert_se(lseek(out_fd
, SEEK_SET
, 0) == 0);
84 assert_se(read(out_fd
, buf
, sizeof(buf
)) == sizeof(text
) - 1);
85 assert_se(streq(buf
, text
));
91 static void test_copy_tree(void) {
92 char original_dir
[] = "/tmp/test-copy_tree/";
93 char copy_dir
[] = "/tmp/test-copy_tree-copy/";
94 char **files
= STRV_MAKE("file", "dir1/file", "dir1/dir2/file", "dir1/dir2/dir3/dir4/dir5/file");
95 char **links
= STRV_MAKE("link", "file",
96 "link2", "dir1/file");
99 log_info("%s", __func__
);
101 (void) rm_rf(copy_dir
, REMOVE_ROOT
|REMOVE_PHYSICAL
);
102 (void) rm_rf(original_dir
, REMOVE_ROOT
|REMOVE_PHYSICAL
);
104 STRV_FOREACH(p
, files
) {
105 char *f
= strjoina(original_dir
, *p
);
107 assert_se(mkdir_parents(f
, 0755) >= 0);
108 assert_se(write_string_file(f
, "file", WRITE_STRING_FILE_CREATE
) == 0);
111 STRV_FOREACH_PAIR(link
, p
, links
) {
112 char *f
= strjoina(original_dir
, *p
);
113 char *l
= strjoina(original_dir
, *link
);
115 assert_se(mkdir_parents(l
, 0755) >= 0);
116 assert_se(symlink(f
, l
) == 0);
119 assert_se(copy_tree(original_dir
, copy_dir
, true) == 0);
121 STRV_FOREACH(p
, files
) {
122 _cleanup_free_
char *buf
= NULL
;
124 char *f
= strjoina(copy_dir
, *p
);
126 assert_se(access(f
, F_OK
) == 0);
127 assert_se(read_full_file(f
, &buf
, &sz
) == 0);
128 assert_se(streq(buf
, "file\n"));
131 STRV_FOREACH_PAIR(link
, p
, links
) {
132 _cleanup_free_
char *target
= NULL
;
133 char *f
= strjoina(original_dir
, *p
);
134 char *l
= strjoina(copy_dir
, *link
);
136 assert_se(readlink_and_canonicalize(l
, &target
) == 0);
137 assert_se(path_equal(f
, target
));
140 assert_se(copy_tree(original_dir
, copy_dir
, false) < 0);
141 assert_se(copy_tree("/tmp/inexistent/foo/bar/fsdoi", copy_dir
, false) < 0);
143 (void) rm_rf(copy_dir
, REMOVE_ROOT
|REMOVE_PHYSICAL
);
144 (void) rm_rf(original_dir
, REMOVE_ROOT
|REMOVE_PHYSICAL
);
147 static void test_copy_bytes(void) {
148 _cleanup_close_pair_
int pipefd
[2] = {-1, -1};
149 _cleanup_close_
int infd
= -1;
151 char buf
[1024], buf2
[1024];
153 infd
= open("/usr/lib/os-release", O_RDONLY
|O_CLOEXEC
);
155 infd
= open("/etc/os-release", O_RDONLY
|O_CLOEXEC
);
156 assert_se(infd
>= 0);
158 assert_se(pipe2(pipefd
, O_CLOEXEC
) == 0);
160 r
= copy_bytes(infd
, pipefd
[1], (uint64_t) -1, false);
163 r
= read(pipefd
[0], buf
, sizeof(buf
));
166 assert_se(lseek(infd
, 0, SEEK_SET
) == 0);
167 r2
= read(infd
, buf2
, sizeof(buf2
));
170 assert_se(strneq(buf
, buf2
, r
));
172 /* test copy_bytes with invalid descriptors */
173 r
= copy_bytes(pipefd
[0], pipefd
[0], 1, false);
174 assert_se(r
== -EBADF
);
176 r
= copy_bytes(pipefd
[1], pipefd
[1], 1, false);
177 assert_se(r
== -EBADF
);
179 r
= copy_bytes(pipefd
[1], infd
, 1, false);
180 assert_se(r
== -EBADF
);
183 static void test_copy_bytes_regular_file(const char *src
, bool try_reflink
, uint64_t max_bytes
) {
184 char fn2
[] = "/tmp/test-copy-file-XXXXXX";
185 char fn3
[] = "/tmp/test-copy-file-XXXXXX";
186 _cleanup_close_
int fd
= -1, fd2
= -1, fd3
= -1;
188 struct stat buf
, buf2
, buf3
;
190 log_info("%s try_reflink=%s max_bytes=%" PRIu64
, __func__
, yes_no(try_reflink
), max_bytes
);
192 fd
= open(src
, O_RDONLY
| O_CLOEXEC
| O_NOCTTY
);
195 fd2
= mkostemp_safe(fn2
, O_RDWR
);
198 fd3
= mkostemp_safe(fn3
, O_WRONLY
);
201 r
= copy_bytes(fd
, fd2
, max_bytes
, try_reflink
);
202 if (max_bytes
== (uint64_t) -1)
205 assert_se(IN_SET(r
, 0, 1));
207 assert_se(lseek(fd2
, 0, SEEK_SET
) == 0);
209 r
= copy_bytes(fd2
, fd3
, max_bytes
, try_reflink
);
210 if (max_bytes
== (uint64_t) -1)
213 /* We cannot distinguish between the input being exactly max_bytes
214 * or longer than max_bytes (without trying to read one more byte,
215 * or calling stat, or FION_READ, etc, and we don't want to do any
216 * of that). So we expect "truncation" since we know that file we
217 * are copying is exactly max_bytes bytes. */
220 assert_se(fstat(fd
, &buf
) == 0);
221 assert_se(fstat(fd2
, &buf2
) == 0);
222 assert_se(fstat(fd3
, &buf3
) == 0);
224 assert_se((uint64_t) buf2
.st_size
== MIN((uint64_t) buf
.st_size
, max_bytes
));
225 assert_se(buf3
.st_size
== buf2
.st_size
);
231 int main(int argc
, char *argv
[]) {
236 test_copy_bytes_regular_file(argv
[0], false, (uint64_t) -1);
237 test_copy_bytes_regular_file(argv
[0], true, (uint64_t) -1);
238 test_copy_bytes_regular_file(argv
[0], false, 1000); /* smaller than copy buffer size */
239 test_copy_bytes_regular_file(argv
[0], true, 1000);
240 test_copy_bytes_regular_file(argv
[0], false, 32000); /* larger than copy buffer size */
241 test_copy_bytes_regular_file(argv
[0], true, 32000);