[Libguestfs] [PATCH 1/2] pwrite: Check offset is not negative.

[Richard W.M. Jones]

-- 
Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones
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>From 24d1ce5ed269a0d3b03565643b9958948a63e9c5 Mon Sep 17 00:00:00 2001
From: Richard W.M. Jones <rjones at redhat.com>
Date: Sun, 26 Sep 2010 17:59:50 +0100
Subject: [PATCH 1/2] pwrite: Check offset is not negative.

---
 daemon/file.c |    5 +++++
 1 files changed, 5 insertions(+), 0 deletions(-)

diff --git a/daemon/file.c b/daemon/file.c
index 476f445..0849456 100644
--- a/daemon/file.c
+++ b/daemon/file.c
@@ -469,6 +469,11 @@ do_pwrite (const char *path, const char *content, size_t size, int64_t offset)
   int fd;
   ssize_t r;
 
+  if (offset < 0) {
+    reply_with_error ("offset is negative");
+    return -1;
+  }
+
   CHROOT_IN;
   fd = open (path, O_WRONLY);
   CHROOT_OUT;
-- 
1.7.3