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 "alloc-util.h"
  23 #include "copy.h"
  24 #include "fd-util.h"
  25 #include "fileio.h"
  26 #include "fs-util.h"
  27 #include "macro.h"
  28 #include "mkdir.h"
  29 #include "path-util.h"
  30 #include "rm-rf.h"
  31 #include "string-util.h"
  32 #include "strv.h"
  33 #include "util.h"
  34
  35 static void test_copy_file(void) {
  36         _cleanup_free_ char *buf = NULL;
  37         char fn[] = "/tmp/test-copy_file.XXXXXX";
  38         char fn_copy[] = "/tmp/test-copy_file.XXXXXX";
  39         size_t sz = 0;
  40         int fd;
  41
  42         fd = mkostemp_safe(fn, O_RDWR|O_CLOEXEC);
  43         assert_se(fd >= 0);
  44         close(fd);
  45
  46         fd = mkostemp_safe(fn_copy, O_RDWR|O_CLOEXEC);
  47         assert_se(fd >= 0);
  48         close(fd);
  49
  50         assert_se(write_string_file(fn, "foo bar bar bar foo", WRITE_STRING_FILE_CREATE) == 0);
  51
  52         assert_se(copy_file(fn, fn_copy, 0, 0644, 0) == 0);
  53
  54         assert_se(read_full_file(fn_copy, &buf, &sz) == 0);
  55         assert_se(streq(buf, "foo bar bar bar foo\n"));
  56         assert_se(sz == 20);
  57
  58         unlink(fn);
  59         unlink(fn_copy);
  60 }
  61
  62 static void test_copy_file_fd(void) {
  63         char in_fn[] = "/tmp/test-copy-file-fd-XXXXXX";
  64         char out_fn[] = "/tmp/test-copy-file-fd-XXXXXX";
  65         _cleanup_close_ int in_fd = -1, out_fd = -1;
  66         char text[] = "boohoo\nfoo\n\tbar\n";
  67         char buf[64] = {0};
  68
  69         in_fd = mkostemp_safe(in_fn, O_RDWR);
  70         assert_se(in_fd >= 0);
  71         out_fd = mkostemp_safe(out_fn, O_RDWR);
  72         assert_se(out_fd >= 0);
  73
  74         assert_se(write_string_file(in_fn, text, WRITE_STRING_FILE_CREATE) == 0);
  75         assert_se(copy_file_fd("/a/file/which/does/not/exist/i/guess", out_fd, true) < 0);
  76         assert_se(copy_file_fd(in_fn, out_fd, true) >= 0);
  77         assert_se(lseek(out_fd, SEEK_SET, 0) == 0);
  78
  79         assert_se(read(out_fd, buf, sizeof(buf)) == sizeof(text) - 1);
  80         assert_se(streq(buf, text));
  81
  82         unlink(in_fn);
  83         unlink(out_fn);
  84 }
  85
  86 static void test_copy_tree(void) {
  87         char original_dir[] = "/tmp/test-copy_tree/";
  88         char copy_dir[] = "/tmp/test-copy_tree-copy/";
  89         char **files = STRV_MAKE("file", "dir1/file", "dir1/dir2/file", "dir1/dir2/dir3/dir4/dir5/file");
  90         char **links = STRV_MAKE("link", "file",
  91                                  "link2", "dir1/file");
  92         char **p, **link;
  93
  94         (void) rm_rf(copy_dir, REMOVE_ROOT|REMOVE_PHYSICAL);
  95         (void) rm_rf(original_dir, REMOVE_ROOT|REMOVE_PHYSICAL);
  96
  97         STRV_FOREACH(p, files) {
  98                 char *f = strjoina(original_dir, *p);
  99
 100                 assert_se(mkdir_parents(f, 0755) >= 0);
 101                 assert_se(write_string_file(f, "file", WRITE_STRING_FILE_CREATE) == 0);
 102         }
 103
 104         STRV_FOREACH_PAIR(link, p, links) {
 105                 char *f = strjoina(original_dir, *p);
 106                 char *l = strjoina(original_dir, *link);
 107
 108                 assert_se(mkdir_parents(l, 0755) >= 0);
 109                 assert_se(symlink(f, l) == 0);
 110         }
 111
 112         assert_se(copy_tree(original_dir, copy_dir, true) == 0);
 113
 114         STRV_FOREACH(p, files) {
 115                 _cleanup_free_ char *buf = NULL;
 116                 size_t sz = 0;
 117                 char *f = strjoina(copy_dir, *p);
 118
 119                 assert_se(access(f, F_OK) == 0);
 120                 assert_se(read_full_file(f, &buf, &sz) == 0);
 121                 assert_se(streq(buf, "file\n"));
 122         }
 123
 124         STRV_FOREACH_PAIR(link, p, links) {
 125                 _cleanup_free_ char *target = NULL;
 126                 char *f = strjoina(original_dir, *p);
 127                 char *l = strjoina(copy_dir, *link);
 128
 129                 assert_se(readlink_and_canonicalize(l, &target) == 0);
 130                 assert_se(path_equal(f, target));
 131         }
 132
 133         assert_se(copy_tree(original_dir, copy_dir, false) < 0);
 134         assert_se(copy_tree("/tmp/inexistent/foo/bar/fsdoi", copy_dir, false) < 0);
 135
 136         (void) rm_rf(copy_dir, REMOVE_ROOT|REMOVE_PHYSICAL);
 137         (void) rm_rf(original_dir, REMOVE_ROOT|REMOVE_PHYSICAL);
 138 }
 139
 140 static void test_copy_bytes(void) {
 141         _cleanup_close_pair_ int pipefd[2] = {-1, -1};
 142         _cleanup_close_ int infd = -1;
 143         int r, r2;
 144         char buf[1024], buf2[1024];
 145
 146         infd = open("/usr/lib/os-release", O_RDONLY|O_CLOEXEC);
 147         if (infd < 0)
 148                 infd = open("/etc/os-release", O_RDONLY|O_CLOEXEC);
 149         assert_se(infd >= 0);
 150
 151         assert_se(pipe2(pipefd, O_CLOEXEC) == 0);
 152
 153         r = copy_bytes(infd, pipefd[1], (uint64_t) -1, false);
 154         assert_se(r == 0);
 155
 156         r = read(pipefd[0], buf, sizeof(buf));
 157         assert_se(r >= 0);
 158
 159         assert_se(lseek(infd, 0, SEEK_SET) == 0);
 160         r2 = read(infd, buf2, sizeof(buf2));
 161         assert_se(r == r2);
 162
 163         assert_se(strneq(buf, buf2, r));
 164
 165         /* test copy_bytes with invalid descriptors */
 166         r = copy_bytes(pipefd[0], pipefd[0], 1, false);
 167         assert_se(r == -EBADF);
 168
 169         r = copy_bytes(pipefd[1], pipefd[1], 1, false);
 170         assert_se(r == -EBADF);
 171
 172         r = copy_bytes(pipefd[1], infd, 1, false);
 173         assert_se(r == -EBADF);
 174 }
 175
 176 int main(int argc, char *argv[]) {
 177         test_copy_file();
 178         test_copy_file_fd();
 179         test_copy_tree();
 180         test_copy_bytes();
 181
 182         return 0;
 183 }