1 /* SPDX-License-Identifier: LGPL-2.1+ */
3 This file is part of systemd
5 Copyright 2014 Ronny Chevalier
10 #include "alloc-util.h"
18 #include "path-util.h"
20 #include "string-util.h"
22 #include "user-util.h"
25 #if 0 /// UNNEEDED by elogind
26 static void test_copy_file(void) {
27 _cleanup_free_ char *buf = NULL;
28 char fn[] = "/tmp/test-copy_file.XXXXXX";
29 char fn_copy[] = "/tmp/test-copy_file.XXXXXX";
33 log_info("%s", __func__);
35 fd = mkostemp_safe(fn);
39 fd = mkostemp_safe(fn_copy);
43 assert_se(write_string_file(fn, "foo bar bar bar foo", WRITE_STRING_FILE_CREATE) == 0);
45 assert_se(copy_file(fn, fn_copy, 0, 0644, 0, COPY_REFLINK) == 0);
47 assert_se(read_full_file(fn_copy, &buf, &sz) == 0);
48 assert_se(streq(buf, "foo bar bar bar foo\n"));
55 static void test_copy_file_fd(void) {
56 char in_fn[] = "/tmp/test-copy-file-fd-XXXXXX";
57 char out_fn[] = "/tmp/test-copy-file-fd-XXXXXX";
58 _cleanup_close_ int in_fd = -1, out_fd = -1;
59 char text[] = "boohoo\nfoo\n\tbar\n";
62 log_info("%s", __func__);
64 in_fd = mkostemp_safe(in_fn);
65 assert_se(in_fd >= 0);
66 out_fd = mkostemp_safe(out_fn);
67 assert_se(out_fd >= 0);
69 assert_se(write_string_file(in_fn, text, WRITE_STRING_FILE_CREATE) == 0);
70 assert_se(copy_file_fd("/a/file/which/does/not/exist/i/guess", out_fd, COPY_REFLINK) < 0);
71 assert_se(copy_file_fd(in_fn, out_fd, COPY_REFLINK) >= 0);
72 assert_se(lseek(out_fd, SEEK_SET, 0) == 0);
74 assert_se(read(out_fd, buf, sizeof(buf)) == sizeof(text) - 1);
75 assert_se(streq(buf, text));
81 static void test_copy_tree(void) {
82 char original_dir[] = "/tmp/test-copy_tree/";
83 char copy_dir[] = "/tmp/test-copy_tree-copy/";
84 char **files = STRV_MAKE("file", "dir1/file", "dir1/dir2/file", "dir1/dir2/dir3/dir4/dir5/file");
85 char **links = STRV_MAKE("link", "file",
86 "link2", "dir1/file");
88 const char *unixsockp;
91 log_info("%s", __func__);
93 (void) rm_rf(copy_dir, REMOVE_ROOT|REMOVE_PHYSICAL);
94 (void) rm_rf(original_dir, REMOVE_ROOT|REMOVE_PHYSICAL);
96 STRV_FOREACH(p, files) {
97 _cleanup_free_ char *f;
99 assert_se(f = strappend(original_dir, *p));
101 assert_se(mkdir_parents(f, 0755) >= 0);
102 assert_se(write_string_file(f, "file", WRITE_STRING_FILE_CREATE) == 0);
105 STRV_FOREACH_PAIR(link, p, links) {
106 _cleanup_free_ char *f, *l;
108 assert_se(f = strappend(original_dir, *p));
109 assert_se(l = strappend(original_dir, *link));
111 assert_se(mkdir_parents(l, 0755) >= 0);
112 assert_se(symlink(f, l) == 0);
115 unixsockp = strjoina(original_dir, "unixsock");
116 assert_se(mknod(unixsockp, S_IFSOCK|0644, 0) >= 0);
118 assert_se(copy_tree(original_dir, copy_dir, UID_INVALID, GID_INVALID, COPY_REFLINK|COPY_MERGE) == 0);
120 STRV_FOREACH(p, files) {
121 _cleanup_free_ char *buf, *f;
124 assert_se(f = strappend(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, *f, *l;
134 assert_se(f = strjoin(original_dir, *p));
135 assert_se(l = strjoin(copy_dir, *link));
137 assert_se(chase_symlinks(l, NULL, 0, &target) == 1);
138 assert_se(path_equal(f, target));
141 unixsockp = strjoina(copy_dir, "unixsock");
142 assert_se(stat(unixsockp, &st) >= 0);
143 assert_se(S_ISSOCK(st.st_mode));
145 assert_se(copy_tree(original_dir, copy_dir, UID_INVALID, GID_INVALID, COPY_REFLINK) < 0);
146 assert_se(copy_tree("/tmp/inexistent/foo/bar/fsdoi", copy_dir, UID_INVALID, GID_INVALID, COPY_REFLINK) < 0);
148 (void) rm_rf(copy_dir, REMOVE_ROOT|REMOVE_PHYSICAL);
149 (void) rm_rf(original_dir, REMOVE_ROOT|REMOVE_PHYSICAL);
153 static void test_copy_bytes(void) {
154 _cleanup_close_pair_ int pipefd[2] = {-1, -1};
155 _cleanup_close_ int infd = -1;
157 char buf[1024], buf2[1024];
159 infd = open("/usr/lib/os-release", O_RDONLY|O_CLOEXEC);
161 infd = open("/etc/os-release", O_RDONLY|O_CLOEXEC);
162 assert_se(infd >= 0);
164 assert_se(pipe2(pipefd, O_CLOEXEC) == 0);
166 r = copy_bytes(infd, pipefd[1], (uint64_t) -1, 0);
169 r = read(pipefd[0], buf, sizeof(buf));
172 assert_se(lseek(infd, 0, SEEK_SET) == 0);
173 r2 = read(infd, buf2, sizeof(buf2));
176 assert_se(strneq(buf, buf2, r));
178 /* test copy_bytes with invalid descriptors */
179 r = copy_bytes(pipefd[0], pipefd[0], 1, 0);
180 assert_se(r == -EBADF);
182 r = copy_bytes(pipefd[1], pipefd[1], 1, 0);
183 assert_se(r == -EBADF);
185 r = copy_bytes(pipefd[1], infd, 1, 0);
186 assert_se(r == -EBADF);
189 static void test_copy_bytes_regular_file(const char *src, bool try_reflink, uint64_t max_bytes) {
190 char fn2[] = "/tmp/test-copy-file-XXXXXX";
191 char fn3[] = "/tmp/test-copy-file-XXXXXX";
192 _cleanup_close_ int fd = -1, fd2 = -1, fd3 = -1;
194 struct stat buf, buf2, buf3;
196 log_info("%s try_reflink=%s max_bytes=%" PRIu64, __func__, yes_no(try_reflink), max_bytes);
198 fd = open(src, O_RDONLY | O_CLOEXEC | O_NOCTTY);
201 fd2 = mkostemp_safe(fn2);
204 fd3 = mkostemp_safe(fn3);
207 r = copy_bytes(fd, fd2, max_bytes, try_reflink ? COPY_REFLINK : 0);
208 if (max_bytes == (uint64_t) -1)
211 assert_se(IN_SET(r, 0, 1));
213 assert_se(fstat(fd, &buf) == 0);
214 assert_se(fstat(fd2, &buf2) == 0);
215 assert_se((uint64_t) buf2.st_size == MIN((uint64_t) buf.st_size, max_bytes));
217 if (max_bytes < (uint64_t) -1)
218 /* Make sure the file is now higher than max_bytes */
219 assert_se(ftruncate(fd2, max_bytes + 1) == 0);
221 assert_se(lseek(fd2, 0, SEEK_SET) == 0);
223 r = copy_bytes(fd2, fd3, max_bytes, try_reflink ? COPY_REFLINK : 0);
224 if (max_bytes == (uint64_t) -1)
227 /* We cannot distinguish between the input being exactly max_bytes
228 * or longer than max_bytes (without trying to read one more byte,
229 * or calling stat, or FION_READ, etc, and we don't want to do any
230 * of that). So we expect "truncation" since we know that file we
231 * are copying is exactly max_bytes bytes. */
234 assert_se(fstat(fd3, &buf3) == 0);
236 if (max_bytes == (uint64_t) -1)
237 assert_se(buf3.st_size == buf2.st_size);
239 assert_se((uint64_t) buf3.st_size == max_bytes);
245 int main(int argc, char *argv[]) {
246 #if 0 /// UNNEEDED by elogind
252 test_copy_bytes_regular_file(argv[0], false, (uint64_t) -1);
253 test_copy_bytes_regular_file(argv[0], true, (uint64_t) -1);
254 test_copy_bytes_regular_file(argv[0], false, 1000); /* smaller than copy buffer size */
255 test_copy_bytes_regular_file(argv[0], true, 1000);
256 test_copy_bytes_regular_file(argv[0], false, 32000); /* larger than copy buffer size */
257 test_copy_bytes_regular_file(argv[0], true, 32000);