From: Richard W.M. Jones <rjones@redhat.com>
Date: Sun, 26 Sep 2010 16:59:50 +0000 (+0100)
Subject: pwrite: Check offset is not negative.
X-Git-Tag: 1.5.20~2
X-Git-Url: http://git.annexia.org/?p=libguestfs.git;a=commitdiff_plain;h=5a8c8b8bf6e846b8d2d7e710f814d24d9a0183c3

pwrite: Check offset is not negative.
---

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;