Systemd/src/basic/label.c
Topi Miettinen c3151977d7 namespace: fix MAC labels of /dev when PrivateDevices=yes
Without changing the SELinux label for private /dev of a service, it will take
a generic file system label:
system_u:object_r:tmpfs_t:s0

After this change it is the same as without `PrivateDevices=yes`:
system_u:object_r:device_t:s0

This helps writing SELinux policies, as the same rules for `/dev` will apply
despite any `PrivateDevices=yes` setting.
2020-03-12 08:23:27 +00:00

65 lines
1.3 KiB
C

/* SPDX-License-Identifier: LGPL-2.1+ */
#include <errno.h>
#include <sys/stat.h>
#include <unistd.h>
#include "btrfs-util.h"
#include "label.h"
#include "macro.h"
#include "selinux-util.h"
#include "smack-util.h"
int label_fix_container(const char *path, const char *inside_path, LabelFixFlags flags) {
int r, q;
r = mac_selinux_fix_container(path, inside_path, flags);
q = mac_smack_fix_container(path, inside_path, flags);
if (r < 0)
return r;
if (q < 0)
return q;
return 0;
}
int symlink_label(const char *old_path, const char *new_path) {
int r;
assert(old_path);
assert(new_path);
r = mac_selinux_create_file_prepare(new_path, S_IFLNK);
if (r < 0)
return r;
if (symlink(old_path, new_path) < 0)
r = -errno;
mac_selinux_create_file_clear();
if (r < 0)
return r;
return mac_smack_fix(new_path, 0);
}
int btrfs_subvol_make_label(const char *path) {
int r;
assert(path);
r = mac_selinux_create_file_prepare(path, S_IFDIR);
if (r < 0)
return r;
r = btrfs_subvol_make(path);
mac_selinux_create_file_clear();
if (r < 0)
return r;
return mac_smack_fix(path, 0);
}