sulogin: make getpasswd(...) return NULL on ^D

This makes the caller bail out early instead of evaluating the
input as a password.

Reported-by: Bjørn Mork <bjorn@mork.no>
Addresses: http://bugs.debian.org/846112
Signed-off-by: Andreas Henriksson <andreas@fatal.se>

diff --git a/login-utils/sulogin.c b/login-utils/sulogin.c
index a44216bda091d9ce8731ff0a90a1793592bbca89..806a967f0535039c255f4be5d2c5048231b91d8c 100644 (file)
--- a/login-utils/sulogin.c
+++ b/login-utils/sulogin.c
@@ -695,6 +695,7 @@ static char *getpasswd(struct console *con)
                                ptr--;
                        break;
                case CEOF:
+                       ret = NULL;
                        goto quit;
                default:
                        if ((size_t)(ptr - &pass[0]) >= (sizeof(pass) -1 )) {