/* SPDX-License-Identifier: LGPL-2.1+ */
/***
- This file is part of systemd.
-
Copyright 2010 Lennart Poettering
***/
#include "string-util.h"
typedef enum MountMode {
- MNT_NONE = 0,
- MNT_FATAL = 1 << 0,
- MNT_IN_CONTAINER = 1 << 1,
- MNT_CHECK_WRITABLE = 1 << 2,
+ MNT_NONE = 0,
+ MNT_FATAL = 1 << 0,
+ MNT_IN_CONTAINER = 1 << 1,
+ MNT_CHECK_WRITABLE = 1 << 2,
} MountMode;
typedef struct MountPoint {
if (strv_find(*k, controller))
break;
- if (k && *k) {
+ if (*k) {
char **i, **j;
for (i = *k, j = *k; *i; i++) {
if (r < 0)
return r;
- if (r > 0 && k && *k) {
+ if (r > 0 && *k) {
char **i;
for (i = *k; *i; i++) {
(void) mkdir_label("/run/systemd/system", 0755);
#endif // 0
- /* Set up inaccessible items */
+ /* Set up inaccessible (and empty) file nodes of all types */
(void) mkdir_label("/run/systemd/inaccessible", 0000);
(void) mknod("/run/systemd/inaccessible/reg", S_IFREG | 0000, 0);
(void) mkdir_label("/run/systemd/inaccessible/dir", 0000);
- (void) mknod("/run/systemd/inaccessible/chr", S_IFCHR | 0000, makedev(0, 0));
- (void) mknod("/run/systemd/inaccessible/blk", S_IFBLK | 0000, makedev(0, 0));
(void) mkfifo("/run/systemd/inaccessible/fifo", 0000);
(void) mknod("/run/systemd/inaccessible/sock", S_IFSOCK | 0000, 0);
+ /* The following two are likely to fail if we lack the privs for it (for example in an userns environment, if
+ * CAP_SYS_MKNOD is missing, or if a device node policy prohibit major/minor of 0 device nodes to be
+ * created). But that's entirely fine. Consumers of these files should carry fallback to use a different node
+ * then, for example /run/systemd/inaccessible/sock, which is close enough in behaviour and semantics for most
+ * uses. */
+ (void) mknod("/run/systemd/inaccessible/chr", S_IFCHR | 0000, makedev(0, 0));
+ (void) mknod("/run/systemd/inaccessible/blk", S_IFBLK | 0000, makedev(0, 0));
+
return 0;
}