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[Xen-devel] [PATCH] libblktap: Remove trailing null byte in xs_printf

  • To: xen-devel@xxxxxxxxxxxxxxxxxxx
  • From: Kevin Wolf <kwolf@xxxxxxx>
  • Date: Thu, 02 Oct 2008 13:51:19 +0200
  • Delivery-date: Thu, 02 Oct 2008 04:50:45 -0700
  • List-id: Xen developer discussion <xen-devel.lists.xensource.com>

xs_printf writes the terminating null byte of the passed string to
Xenstore. When reading, the null byte is returned in the following form
which confuses tools:

sector-size = "512\000"

This patch removes the null byte from the data to write.

Signed-off-by: Kevin Wolf <kwolf@xxxxxxx>
Index: xen-unstable.hg/tools/blktap/lib/xs_api.c
--- xen-unstable.hg.orig/tools/blktap/lib/xs_api.c
+++ xen-unstable.hg/tools/blktap/lib/xs_api.c
@@ -132,7 +132,7 @@ int xs_printf(struct xs_handle *h, const
                return ENOMEM;
-       ret = xs_write(h, XBT_NULL, path, buf, strlen(buf)+1);
+       ret = xs_write(h, XBT_NULL, path, buf, strlen(buf));
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