src/test/test-copy.c

   1 /***
   2   This file is part of systemd
   3
   4   Copyright 2014 Ronny Chevalier
   5
   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.
  10
  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.
  15
  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/>.
  18 ***/
  19
  20 #include <unistd.h>
  21
  22 #include "copy.h"
  23 #include "fd-util.h"
  24 #include "fileio.h"
  25 #include "fs-util.h"
  26 #include "macro.h"
  27 #include "mkdir.h"
  28 #include "path-util.h"
  29 #include "rm-rf.h"
  30 #include "string-util.h"
  31 #include "strv.h"
  32 #include "util.h"
  33
  34 static void test_copy_file(void) {
  35         _cleanup_free_ char *buf = NULL;
  36         char fn[] = "/tmp/test-copy_file.XXXXXX";
  37         char fn_copy[] = "/tmp/test-copy_file.XXXXXX";
  38         size_t sz = 0;
  39         int fd;
  40
  41         fd = mkostemp_safe(fn, O_RDWR|O_CLOEXEC);
  42         assert_se(fd >= 0);
  43         close(fd);
  44
  45         fd = mkostemp_safe(fn_copy, O_RDWR|O_CLOEXEC);
  46         assert_se(fd >= 0);
  47         close(fd);
  48
  49         assert_se(write_string_file(fn, "foo bar bar bar foo", WRITE_STRING_FILE_CREATE) == 0);
  50
  51         assert_se(copy_file(fn, fn_copy, 0, 0644, 0) == 0);
  52
  53         assert_se(read_full_file(fn_copy, &buf, &sz) == 0);
  54         assert_se(streq(buf, "foo bar bar bar foo\n"));
  55         assert_se(sz == 20);
  56
  57         unlink(fn);
  58         unlink(fn_copy);
  59 }
  60
  61 static void test_copy_file_fd(void) {
  62         char in_fn[] = "/tmp/test-copy-file-fd-XXXXXX";
  63         char out_fn[] = "/tmp/test-copy-file-fd-XXXXXX";
  64         _cleanup_close_ int in_fd = -1, out_fd = -1;
  65         char text[] = "boohoo\nfoo\n\tbar\n";
  66         char buf[64] = {0};
  67
  68         in_fd = mkostemp_safe(in_fn, O_RDWR);
  69         assert_se(in_fd >= 0);
  70         out_fd = mkostemp_safe(out_fn, O_RDWR);
  71         assert_se(out_fd >= 0);
  72
  73         assert_se(write_string_file(in_fn, text, WRITE_STRING_FILE_CREATE) == 0);
  74         assert_se(copy_file_fd("/a/file/which/does/not/exist/i/guess", out_fd, true) < 0);
  75         assert_se(copy_file_fd(in_fn, out_fd, true) >= 0);
  76         assert_se(lseek(out_fd, SEEK_SET, 0) == 0);
  77
  78         assert_se(read(out_fd, buf, sizeof(buf)) == sizeof(text) - 1);
  79         assert_se(streq(buf, text));
  80
  81         unlink(in_fn);
  82         unlink(out_fn);
  83 }
  84
  85 static void test_copy_tree(void) {
  86         char original_dir[] = "/tmp/test-copy_tree/";
  87         char copy_dir[] = "/tmp/test-copy_tree-copy/";
  88         char **files = STRV_MAKE("file", "dir1/file", "dir1/dir2/file", "dir1/dir2/dir3/dir4/dir5/file");
  89         char **links = STRV_MAKE("link", "file",
  90                                  "link2", "dir1/file");
  91         char **p, **link;
  92
  93         (void) rm_rf(copy_dir, REMOVE_ROOT|REMOVE_PHYSICAL);
  94         (void) rm_rf(original_dir, REMOVE_ROOT|REMOVE_PHYSICAL);
  95
  96         STRV_FOREACH(p, files) {
  97                 char *f = strjoina(original_dir, *p);
  98
  99                 assert_se(mkdir_parents(f, 0755) >= 0);
 100                 assert_se(write_string_file(f, "file", WRITE_STRING_FILE_CREATE) == 0);
 101         }
 102
 103         STRV_FOREACH_PAIR(link, p, links) {
 104                 char *f = strjoina(original_dir, *p);
 105                 char *l = strjoina(original_dir, *link);
 106
 107                 assert_se(mkdir_parents(l, 0755) >= 0);
 108                 assert_se(symlink(f, l) == 0);
 109         }
 110
 111         assert_se(copy_tree(original_dir, copy_dir, true) == 0);
 112
 113         STRV_FOREACH(p, files) {
 114                 _cleanup_free_ char *buf = NULL;
 115                 size_t sz = 0;
 116                 char *f = strjoina(copy_dir, *p);
 117
 118                 assert_se(access(f, F_OK) == 0);
 119                 assert_se(read_full_file(f, &buf, &sz) == 0);
 120                 assert_se(streq(buf, "file\n"));
 121         }
 122
 123         STRV_FOREACH_PAIR(link, p, links) {
 124                 _cleanup_free_ char *target = NULL;
 125                 char *f = strjoina(original_dir, *p);
 126                 char *l = strjoina(copy_dir, *link);
 127
 128                 assert_se(readlink_and_canonicalize(l, &target) == 0);
 129                 assert_se(path_equal(f, target));
 130         }
 131
 132         assert_se(copy_tree(original_dir, copy_dir, false) < 0);
 133         assert_se(copy_tree("/tmp/inexistent/foo/bar/fsdoi", copy_dir, false) < 0);
 134
 135         (void) rm_rf(copy_dir, REMOVE_ROOT|REMOVE_PHYSICAL);
 136         (void) rm_rf(original_dir, REMOVE_ROOT|REMOVE_PHYSICAL);
 137 }
 138
 139 static void test_copy_bytes(void) {
 140         _cleanup_close_pair_ int pipefd[2] = {-1, -1};
 141         _cleanup_close_ int infd = -1;
 142         int r, r2;
 143         char buf[1024], buf2[1024];
 144
 145         infd = open("/usr/lib/os-release", O_RDONLY|O_CLOEXEC);
 146         if (infd < 0)
 147                 infd = open("/etc/os-release", O_RDONLY|O_CLOEXEC);
 148         assert_se(infd >= 0);
 149
 150         assert_se(pipe2(pipefd, O_CLOEXEC) == 0);
 151
 152         r = copy_bytes(infd, pipefd[1], (uint64_t) -1, false);
 153         assert_se(r == 0);
 154
 155         r = read(pipefd[0], buf, sizeof(buf));
 156         assert_se(r >= 0);
 157
 158         assert_se(lseek(infd, 0, SEEK_SET) == 0);
 159         r2 = read(infd, buf2, sizeof(buf2));
 160         assert_se(r == r2);
 161
 162         assert_se(strneq(buf, buf2, r));
 163
 164         /* test copy_bytes with invalid descriptors */
 165         r = copy_bytes(pipefd[0], pipefd[0], 1, false);
 166         assert_se(r == -EBADF);
 167
 168         r = copy_bytes(pipefd[1], pipefd[1], 1, false);
 169         assert_se(r == -EBADF);
 170
 171         r = copy_bytes(pipefd[1], infd, 1, false);
 172         assert_se(r == -EBADF);
 173 }
 174
 175 int main(int argc, char *argv[]) {
 176         test_copy_file();
 177         test_copy_file_fd();
 178         test_copy_tree();
 179         test_copy_bytes();
 180
 181         return 0;
 182 }