[Qemu-devel] [PATCH] Check for invalid initrd file

["M. Mohan Kumar" <mohan@in.ibm.com>]

From c5dca54f67ec6aac16c6c5e09958417b2b3ee5a1 Mon Sep 17 00:00:00 2001
From: M. Mohan Kumar <mohan@in.ibm.com>
Date: Thu, 4 Mar 2010 14:23:07 +0530
Subject: [PATCH] Check for invalid initrd file

When qemu is invoked with an invalid initrd file, it crashes. Following
patch prints a error message and exits if an invalid initrd is specified.

Signed-off-by: M. Mohan Kumar <mohan@in.ibm.com>
---
 hw/pc.c |    6 ++++++
 1 files changed, 6 insertions(+), 0 deletions(-)

diff --git a/hw/pc.c b/hw/pc.c
index 4f6a522..551c901 100644
--- a/hw/pc.c
+++ b/hw/pc.c
@@ -669,6 +669,12 @@ static void load_linux(void *fw_cfg,
 	}
 
 	initrd_size = get_image_size(initrd_filename);
+	if (initrd_size < 0) {
+		fprintf(stderr, "qemu: initrd %s does not exist\n",
+							initrd_filename);
+		exit(1);
+	}
+
         initrd_addr = (initrd_max-initrd_size) & ~4095;
 
         initrd_data = qemu_malloc(initrd_size);
-- 
1.6.6.1


-- 
M. Mohan Kumar,
Linux Technology Center, IBM India