- r = setxattr(path, "security.SMACK64", label, strlen(label), 0);
+ r = lstat(path, &st);
+ if (r >= 0) {
+ const char *label;
+
+ /*
+ * Label directories and character devices "*".
+ * Label symlinks "_".
+ * Don't change anything else.
+ */
+
+ if (S_ISDIR(st.st_mode))
+ label = SMACK_STAR_LABEL;
+ else if (S_ISLNK(st.st_mode))
+ label = SMACK_FLOOR_LABEL;
+ else if (S_ISCHR(st.st_mode))
+ label = SMACK_STAR_LABEL;
+ else
+ return 0;
+
+ r = lsetxattr(path, "security.SMACK64", label, strlen(label), 0);
+
+ /* If the FS doesn't support labels, then exit without warning */
+ if (r < 0 && errno == ENOTSUP)
+ return 0;
+ }
+