+
+const char* mode_to_inaccessible_node(mode_t mode) {
+ /* This function maps a node type to the correspondent inaccessible node type.
+ * Character and block inaccessible devices may not be created (because major=0 and minor=0),
+ * in such case we map character and block devices to the inaccessible node type socket. */
+ switch(mode & S_IFMT) {
+ case S_IFREG:
+ return "/run/systemd/inaccessible/reg";
+ case S_IFDIR:
+ return "/run/systemd/inaccessible/dir";
+ case S_IFCHR:
+ if (access("/run/systemd/inaccessible/chr", F_OK) == 0)
+ return "/run/systemd/inaccessible/chr";
+ return "/run/systemd/inaccessible/sock";
+ case S_IFBLK:
+ if (access("/run/systemd/inaccessible/blk", F_OK) == 0)
+ return "/run/systemd/inaccessible/blk";
+ return "/run/systemd/inaccessible/sock";
+ case S_IFIFO:
+ return "/run/systemd/inaccessible/fifo";
+ case S_IFSOCK:
+ return "/run/systemd/inaccessible/sock";
+ }
+ return NULL;
+}