src/test/test-xattr-util.c

   1 /***
   2   This file is part of systemd.
   3
   4   Copyright 2010 Lennart Poettering
   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 <errno.h>
  21 #include <fcntl.h>
  22 #include <sys/types.h>
  23 #include <sys/xattr.h>
  24 #include <unistd.h>
  25
  26 #include "alloc-util.h"
  27 #include "fd-util.h"
  28 #include "fs-util.h"
  29 #include "macro.h"
  30 #include "string-util.h"
  31 #include "xattr-util.h"
  32
  33 static void test_fgetxattrat_fake(void) {
  34         char t[] = "/var/tmp/xattrtestXXXXXX";
  35         _cleanup_close_ int fd = -1;
  36         const char *x;
  37         char v[3] = {};
  38         int r;
  39
  40         assert_se(mkdtemp(t));
  41         x = strjoina(t, "/test");
  42         assert_se(touch(x) >= 0);
  43
  44         r = setxattr(x, "user.foo", "bar", 3, 0);
  45         if (r < 0 && errno == EOPNOTSUPP) /* no xattrs supported on /var/tmp... */
  46                 goto cleanup;
  47         assert_se(r >= 0);
  48
  49         fd = open(t, O_RDONLY|O_DIRECTORY|O_CLOEXEC|O_NOCTTY);
  50         assert_se(fd >= 0);
  51
  52         assert_se(fgetxattrat_fake(fd, "test", "user.foo", v, 3, 0) >= 0);
  53         assert_se(memcmp(v, "bar", 3) == 0);
  54
  55         safe_close(fd);
  56         fd = open("/", O_RDONLY|O_DIRECTORY|O_CLOEXEC|O_NOCTTY);
  57         assert_se(fd >= 0);
  58         assert_se(fgetxattrat_fake(fd, "usr", "user.idontexist", v, 3, 0) == -ENODATA);
  59
  60 cleanup:
  61         assert_se(unlink(x) >= 0);
  62         assert_se(rmdir(t) >= 0);
  63 }
  64
  65 int main(void) {
  66         test_fgetxattrat_fake();
  67
  68         return 0;
  69 }