src/basic/label.c

   1 /* SPDX-License-Identifier: LGPL-2.1+ */
   2
   3 #include <errno.h>
   4 #include <sys/stat.h>
   5 #include <unistd.h>
   6
   7 #include "btrfs-util.h"
   8 #include "label.h"
   9 #include "macro.h"
  10 #include "selinux-util.h"
  11 #include "smack-util.h"
  12
  13 int label_fix_container(const char *path, const char *inside_path, LabelFixFlags flags) {
  14         int r, q;
  15
  16         r = mac_selinux_fix_container(path, inside_path, flags);
  17         q = mac_smack_fix_container(path, inside_path, flags);
  18
  19         if (r < 0)
  20                 return r;
  21         if (q < 0)
  22                 return q;
  23
  24         return 0;
  25 }
  26
  27 int symlink_label(const char *old_path, const char *new_path) {
  28         int r;
  29
  30         assert(old_path);
  31         assert(new_path);
  32
  33         r = mac_selinux_create_file_prepare(new_path, S_IFLNK);
  34         if (r < 0)
  35                 return r;
  36
  37         if (symlink(old_path, new_path) < 0)
  38                 r = -errno;
  39
  40         mac_selinux_create_file_clear();
  41
  42         if (r < 0)
  43                 return r;
  44
  45         return mac_smack_fix(new_path, 0);
  46 }
  47
  48 int mknod_label(const char *pathname, mode_t mode, dev_t dev) {
  49         int r;
  50
  51         assert(pathname);
  52
  53         r = mac_selinux_create_file_prepare(pathname, mode);
  54         if (r < 0)
  55                 return r;
  56
  57         if (mknod(pathname, mode, dev) < 0)
  58                 r = -errno;
  59
  60         mac_selinux_create_file_clear();
  61
  62         if (r < 0)
  63                 return r;
  64
  65         return mac_smack_fix(pathname, 0);
  66 }
  67
  68 int btrfs_subvol_make_label(const char *path) {
  69         int r;
  70
  71         assert(path);
  72
  73         r = mac_selinux_create_file_prepare(path, S_IFDIR);
  74         if (r < 0)
  75                 return r;
  76
  77         r = btrfs_subvol_make(path);
  78         mac_selinux_create_file_clear();
  79
  80         if (r < 0)
  81                 return r;
  82
  83         return mac_smack_fix(path, 0);
  84 }