1 /* SPDX-License-Identifier: LGPL-2.1+ */
5 #include "alloc-util.h"
13 #include "path-util.h"
15 #include "string-util.h"
17 #include "user-util.h"
20 #if 0 /// UNNEEDED by elogind
21 static void test_copy_file(void) {
22 _cleanup_free_ char *buf = NULL;
23 char fn[] = "/tmp/test-copy_file.XXXXXX";
24 char fn_copy[] = "/tmp/test-copy_file.XXXXXX";
28 log_info("%s", __func__);
30 fd = mkostemp_safe(fn);
34 fd = mkostemp_safe(fn_copy);
38 assert_se(write_string_file(fn, "foo bar bar bar foo", WRITE_STRING_FILE_CREATE) == 0);
40 assert_se(copy_file(fn, fn_copy, 0, 0644, 0, COPY_REFLINK) == 0);
42 assert_se(read_full_file(fn_copy, &buf, &sz) == 0);
43 assert_se(streq(buf, "foo bar bar bar foo\n"));
50 static void test_copy_file_fd(void) {
51 char in_fn[] = "/tmp/test-copy-file-fd-XXXXXX";
52 char out_fn[] = "/tmp/test-copy-file-fd-XXXXXX";
53 _cleanup_close_ int in_fd = -1, out_fd = -1;
54 char text[] = "boohoo\nfoo\n\tbar\n";
57 log_info("%s", __func__);
59 in_fd = mkostemp_safe(in_fn);
60 assert_se(in_fd >= 0);
61 out_fd = mkostemp_safe(out_fn);
62 assert_se(out_fd >= 0);
64 assert_se(write_string_file(in_fn, text, WRITE_STRING_FILE_CREATE) == 0);
65 assert_se(copy_file_fd("/a/file/which/does/not/exist/i/guess", out_fd, COPY_REFLINK) < 0);
66 assert_se(copy_file_fd(in_fn, out_fd, COPY_REFLINK) >= 0);
67 assert_se(lseek(out_fd, SEEK_SET, 0) == 0);
69 assert_se(read(out_fd, buf, sizeof(buf)) == sizeof(text) - 1);
70 assert_se(streq(buf, text));
76 static void test_copy_tree(void) {
77 char original_dir[] = "/tmp/test-copy_tree/";
78 char copy_dir[] = "/tmp/test-copy_tree-copy/";
79 char **files = STRV_MAKE("file", "dir1/file", "dir1/dir2/file", "dir1/dir2/dir3/dir4/dir5/file");
80 char **links = STRV_MAKE("link", "file",
81 "link2", "dir1/file");
83 const char *unixsockp;
86 log_info("%s", __func__);
88 (void) rm_rf(copy_dir, REMOVE_ROOT|REMOVE_PHYSICAL);
89 (void) rm_rf(original_dir, REMOVE_ROOT|REMOVE_PHYSICAL);
91 STRV_FOREACH(p, files) {
92 _cleanup_free_ char *f;
94 assert_se(f = strappend(original_dir, *p));
96 assert_se(mkdir_parents(f, 0755) >= 0);
97 assert_se(write_string_file(f, "file", WRITE_STRING_FILE_CREATE) == 0);
100 STRV_FOREACH_PAIR(link, p, links) {
101 _cleanup_free_ char *f, *l;
103 assert_se(f = strappend(original_dir, *p));
104 assert_se(l = strappend(original_dir, *link));
106 assert_se(mkdir_parents(l, 0755) >= 0);
107 assert_se(symlink(f, l) == 0);
110 unixsockp = strjoina(original_dir, "unixsock");
111 assert_se(mknod(unixsockp, S_IFSOCK|0644, 0) >= 0);
113 assert_se(copy_tree(original_dir, copy_dir, UID_INVALID, GID_INVALID, COPY_REFLINK|COPY_MERGE) == 0);
115 STRV_FOREACH(p, files) {
116 _cleanup_free_ char *buf, *f;
119 assert_se(f = strappend(copy_dir, *p));
121 assert_se(access(f, F_OK) == 0);
122 assert_se(read_full_file(f, &buf, &sz) == 0);
123 assert_se(streq(buf, "file\n"));
126 STRV_FOREACH_PAIR(link, p, links) {
127 _cleanup_free_ char *target, *f, *l;
129 assert_se(f = strjoin(original_dir, *p));
130 assert_se(l = strjoin(copy_dir, *link));
132 assert_se(chase_symlinks(l, NULL, 0, &target) == 1);
133 assert_se(path_equal(f, target));
136 unixsockp = strjoina(copy_dir, "unixsock");
137 assert_se(stat(unixsockp, &st) >= 0);
138 assert_se(S_ISSOCK(st.st_mode));
140 assert_se(copy_tree(original_dir, copy_dir, UID_INVALID, GID_INVALID, COPY_REFLINK) < 0);
141 assert_se(copy_tree("/tmp/inexistent/foo/bar/fsdoi", copy_dir, UID_INVALID, GID_INVALID, COPY_REFLINK) < 0);
143 (void) rm_rf(copy_dir, REMOVE_ROOT|REMOVE_PHYSICAL);
144 (void) rm_rf(original_dir, REMOVE_ROOT|REMOVE_PHYSICAL);
148 static void test_copy_bytes(void) {
149 _cleanup_close_pair_ int pipefd[2] = {-1, -1};
150 _cleanup_close_ int infd = -1;
152 char buf[1024], buf2[1024];
154 infd = open("/usr/lib/os-release", O_RDONLY|O_CLOEXEC);
156 infd = open("/etc/os-release", O_RDONLY|O_CLOEXEC);
157 assert_se(infd >= 0);
159 assert_se(pipe2(pipefd, O_CLOEXEC) == 0);
161 r = copy_bytes(infd, pipefd[1], (uint64_t) -1, 0);
164 r = read(pipefd[0], buf, sizeof(buf));
167 assert_se(lseek(infd, 0, SEEK_SET) == 0);
168 r2 = read(infd, buf2, sizeof(buf2));
171 assert_se(strneq(buf, buf2, r));
173 /* test copy_bytes with invalid descriptors */
174 r = copy_bytes(pipefd[0], pipefd[0], 1, 0);
175 assert_se(r == -EBADF);
177 r = copy_bytes(pipefd[1], pipefd[1], 1, 0);
178 assert_se(r == -EBADF);
180 r = copy_bytes(pipefd[1], infd, 1, 0);
181 assert_se(r == -EBADF);
184 static void test_copy_bytes_regular_file(const char *src, bool try_reflink, uint64_t max_bytes) {
185 char fn2[] = "/tmp/test-copy-file-XXXXXX";
186 char fn3[] = "/tmp/test-copy-file-XXXXXX";
187 _cleanup_close_ int fd = -1, fd2 = -1, fd3 = -1;
189 struct stat buf, buf2, buf3;
191 log_info("%s try_reflink=%s max_bytes=%" PRIu64, __func__, yes_no(try_reflink), max_bytes);
193 fd = open(src, O_RDONLY | O_CLOEXEC | O_NOCTTY);
196 fd2 = mkostemp_safe(fn2);
199 fd3 = mkostemp_safe(fn3);
202 r = copy_bytes(fd, fd2, max_bytes, try_reflink ? COPY_REFLINK : 0);
203 if (max_bytes == (uint64_t) -1)
206 assert_se(IN_SET(r, 0, 1));
208 assert_se(fstat(fd, &buf) == 0);
209 assert_se(fstat(fd2, &buf2) == 0);
210 assert_se((uint64_t) buf2.st_size == MIN((uint64_t) buf.st_size, max_bytes));
212 if (max_bytes < (uint64_t) -1)
213 /* Make sure the file is now higher than max_bytes */
214 assert_se(ftruncate(fd2, max_bytes + 1) == 0);
216 assert_se(lseek(fd2, 0, SEEK_SET) == 0);
218 r = copy_bytes(fd2, fd3, max_bytes, try_reflink ? COPY_REFLINK : 0);
219 if (max_bytes == (uint64_t) -1)
222 /* We cannot distinguish between the input being exactly max_bytes
223 * or longer than max_bytes (without trying to read one more byte,
224 * or calling stat, or FION_READ, etc, and we don't want to do any
225 * of that). So we expect "truncation" since we know that file we
226 * are copying is exactly max_bytes bytes. */
229 assert_se(fstat(fd3, &buf3) == 0);
231 if (max_bytes == (uint64_t) -1)
232 assert_se(buf3.st_size == buf2.st_size);
234 assert_se((uint64_t) buf3.st_size == max_bytes);
240 #if 0 /// UNNEEDED by elogind
241 static void test_copy_atomic(void) {
242 _cleanup_(rm_rf_physical_and_freep) char *p = NULL;
246 assert_se(mkdtemp_malloc(NULL, &p) >= 0);
248 q = strjoina(p, "/fstab");
250 r = copy_file_atomic("/etc/fstab", q, 0644, 0, COPY_REFLINK);
254 assert_se(copy_file_atomic("/etc/fstab", q, 0644, 0, COPY_REFLINK) == -EEXIST);
256 assert_se(copy_file_atomic("/etc/fstab", q, 0644, 0, COPY_REPLACE) >= 0);
260 int main(int argc, char *argv[]) {
261 log_set_max_level(LOG_DEBUG);
263 #if 0 /// UNNEEDED by elogind
269 test_copy_bytes_regular_file(argv[0], false, (uint64_t) -1);
270 test_copy_bytes_regular_file(argv[0], true, (uint64_t) -1);
271 test_copy_bytes_regular_file(argv[0], false, 1000); /* smaller than copy buffer size */
272 test_copy_bytes_regular_file(argv[0], true, 1000);
273 test_copy_bytes_regular_file(argv[0], false, 32000); /* larger than copy buffer size */
274 test_copy_bytes_regular_file(argv[0], true, 32000);
275 #if 0 /// UNNEEDED by elogind