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authorYang Zhang <yang.z.zhang@intel.com>2015-08-28 09:58:54 +0800
committerYang Zhang <yang.z.zhang@intel.com>2015-09-01 12:44:00 +0800
commite44e3482bdb4d0ebde2d8b41830ac2cdb07948fb (patch)
tree66b09f592c55df2878107a468a91d21506104d3f /qemu/roms/ipxe/src/usr/prompt.c
parent9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (diff)
Add qemu 2.4.0
Change-Id: Ic99cbad4b61f8b127b7dc74d04576c0bcbaaf4f5 Signed-off-by: Yang Zhang <yang.z.zhang@intel.com>
Diffstat (limited to 'qemu/roms/ipxe/src/usr/prompt.c')
-rw-r--r--qemu/roms/ipxe/src/usr/prompt.c66
1 files changed, 66 insertions, 0 deletions
diff --git a/qemu/roms/ipxe/src/usr/prompt.c b/qemu/roms/ipxe/src/usr/prompt.c
new file mode 100644
index 000000000..957b4ab3d
--- /dev/null
+++ b/qemu/roms/ipxe/src/usr/prompt.c
@@ -0,0 +1,66 @@
+/*
+ * Copyright (C) 2011 Michael Brown <mbrown@fensystems.co.uk>.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ */
+
+FILE_LICENCE ( GPL2_OR_LATER );
+
+/** @file
+ *
+ * Prompt for keypress
+ *
+ */
+
+#include <errno.h>
+#include <stdio.h>
+#include <ipxe/console.h>
+#include <usr/prompt.h>
+
+/**
+ * Prompt for keypress
+ *
+ * @v text Prompt string
+ * @v timeout Timeout period, in ticks (0=indefinite)
+ * @v key Key to wait for (0=any key)
+ * @ret rc Return status code
+ *
+ * Returns success if the specified key was pressed within the
+ * specified timeout period.
+ */
+int prompt ( const char *text, unsigned long timeout, int key ) {
+ int key_pressed;
+
+ /* Display prompt */
+ printf ( "%s", text );
+
+ /* Wait for key */
+ key_pressed = getkey ( timeout );
+
+ /* Clear the prompt line */
+ while ( *(text++) )
+ printf ( "\b \b" );
+
+ /* Check for timeout */
+ if ( key_pressed < 0 )
+ return -ETIMEDOUT;
+
+ /* Check for correct key pressed */
+ if ( key && ( key_pressed != key ) )
+ return -ECANCELED;
+
+ return 0;
+}