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