From: Todd C. Miller <Todd.Miller@courtesan.com>
Date: Tue, 27 Mar 2012 16:41:28 +0000 (-0400)
Subject: If there is nothing to read from the askpass program, set errno to
X-Git-Tag: SUDO_1_8_5~1^2~116
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=9be74cac45fa878c7797ea301c6279f8273ea1ec;p=sudo

If there is nothing to read from the askpass program, set errno to
EINTR.  This makes the cancel button behave like the user entered
^C at the password prompt when PAM is used.
---

diff --git a/src/tgetpass.c b/src/tgetpass.c
index c19e83b9c..8b12bdc8e 100644
--- a/src/tgetpass.c
+++ b/src/tgetpass.c
@@ -254,6 +254,9 @@ sudo_askpass(const char *askpass, const char *prompt)
     (void) close(pfd[0]);
     (void) sigaction(SIGPIPE, &saved_sa_pipe, NULL);
 
+    if (pass == NULL)
+	errno = EINTR;	/* make cancel button simulate ^C */
+
     debug_return_str_masked(pass);
 }