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