enable pledge(2) in rain(6)

it is libcurses program: at init it needs "stdio rpath getpw tty", and after
drop to just "stdio tty". "tty" is needed at end for restoring the tty.

initial patch from doug@
ok doug@ deraadt@

diff --git a/games/rain/rain.c b/games/rain/rain.c
index 1e8960a..9d6beb7 100644 (file)
--- a/games/rain/rain.c
+++ b/games/rain/rain.c
@@ -1,4 +1,4 @@
-/*     $OpenBSD: rain.c,v 1.17 2013/08/29 20:22:18 naddy Exp $ */
+/*     $OpenBSD: rain.c,v 1.18 2015/10/14 07:19:23 semarie Exp $       */
 
 /*
  * Copyright (c) 1980, 1993
@@ -61,6 +61,9 @@ main(int argc, char *argv[])
        int ch;
        int xpos[5], ypos[5];
 
+       if (pledge("stdio rpath getpw tty", NULL) == -1)
+               err(1, "pledge");
+
        /* set default delay based on terminal baud rate */
        if (tcgetattr(STDOUT_FILENO, &term) == 0 &&
            (speed = cfgetospeed(&term)) > B9600)
@@ -85,6 +88,10 @@ main(int argc, char *argv[])
        timespecadd(&sleeptime, &sleeptime, &sleeptime);
 
        initscr();
+
+       if (pledge("stdio tty", NULL) == -1)
+               err(1, "pledge");
+
        tcols = COLS - 4;
        tlines = LINES - 4;