+static inline int isctrlchr(int c)
+{
+ if (c == 9) return 0;
+ if (c >= 0 && c <= 31) return 1;
+ if (c == 127) return 1;
+ return 0;
+}
+
+static int getps_plain_filter(struct getpasswd_state *getps, char chr, size_t pos)
+{
+ int x;
+
+ x = getps_filter(getps, chr, pos);
+ if (x != 1) return x;
+
+ if (pos < getps->pwlen && !isctrlchr(chr))
+ write(getps->efd, &chr, sizeof(char));
+ return 1;
+}
+
+static int getps_plain_hex_filter(struct getpasswd_state *getps, char chr, size_t pos)
+{
+ int x;
+
+ x = getps_hex_filter(getps, chr, pos);
+ if (x != 1) return x;
+
+ if (pos < getps->pwlen && !isctrlchr(chr))
+ write(getps->efd, &chr, sizeof(char));
+ return 1;
+}
+