src/basic/label.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 <sys/stat.h>
  22 #include <unistd.h>
  23
  24 #include "label.h"
  25 #include "macro.h"
  26 #include "selinux-util.h"
  27 #include "smack-util.h"
  28
  29 int label_fix(const char *path, bool ignore_enoent, bool ignore_erofs) {
  30         int r, q;
  31
  32         r = mac_selinux_fix(path, ignore_enoent, ignore_erofs);
  33         q = mac_smack_fix(path, ignore_enoent, ignore_erofs);
  34
  35         if (r < 0)
  36                 return r;
  37         if (q < 0)
  38                 return q;
  39
  40         return 0;
  41 }
  42
  43 int mkdir_label(const char *path, mode_t mode) {
  44         int r;
  45
  46         assert(path);
  47
  48         r = mac_selinux_create_file_prepare(path, S_IFDIR);
  49         if (r < 0)
  50                 return r;
  51
  52         if (mkdir(path, mode) < 0)
  53                 r = -errno;
  54
  55         mac_selinux_create_file_clear();
  56
  57         if (r < 0)
  58                 return r;
  59
  60         return mac_smack_fix(path, false, false);
  61 }
  62
  63 int symlink_label(const char *old_path, const char *new_path) {
  64         int r;
  65
  66         assert(old_path);
  67         assert(new_path);
  68
  69         r = mac_selinux_create_file_prepare(new_path, S_IFLNK);
  70         if (r < 0)
  71                 return r;
  72
  73         if (symlink(old_path, new_path) < 0)
  74                 r = -errno;
  75
  76         mac_selinux_create_file_clear();
  77
  78         if (r < 0)
  79                 return r;
  80
  81         return mac_smack_fix(new_path, false, false);
  82 }