[Xen-changelog] [xen-unstable] libxl: Fix format string abuses / vulnerabilities

[Xen patchbot-unstable <patchbot-unstable@xxxxxxxxxxxxxxxxxxx>]

# HG changeset patch
# User Ian Jackson <Ian.Jackson@xxxxxxxxxxxxx>
# Date 1288263945 -3600
# Node ID 2795279e7533b1955112877620b32731aec4ec2d
# Parent  da9b1aa3c3669792e3055770e1839c3e96590318
libxl: Fix format string abuses / vulnerabilities

There are a few places where libxl__xs_write is passed a variable
value to write to xenstore, but the semantics are that the first char*
is a format string.  So use "%s".

This fixes the following errors reported by some newer compilers:
 libxl.c: In function "libxl_create_cpupool":
 libxl.c:3981: error: format not a string literal and no format arguments
 libxl.c:3983: error: format not a string literal and no format arguments
 libxl.c: In function "libxl_cpupool_movedomain":
 libxl.c:4095: error: format not a string literal and no format arguments

Signed-off-by: Ian Jackson <ian.jackson@xxxxxxxxxxxxx>
Acked-by: Ian Campbell <ian.campbell@xxxxxxxxxx>
Acked-by: Gianni Tedesco <gianni.tedesco@xxxxxxxxxx>
---
 tools/libxl/libxl.c |   13 ++++++++-----
 1 files changed, 8 insertions(+), 5 deletions(-)

diff -r da9b1aa3c366 -r 2795279e7533 tools/libxl/libxl.c
--- a/tools/libxl/libxl.c       Thu Oct 28 12:02:22 2010 +0100
+++ b/tools/libxl/libxl.c       Thu Oct 28 12:05:45 2010 +0100
@@ -3978,10 +3978,12 @@ int libxl_create_cpupool(libxl_ctx *ctx,
         t = xs_transaction_start(ctx->xsh);
 
         xs_mkdir(ctx->xsh, t, libxl__sprintf(&gc, "/local/pool/%d", *poolid));
-        libxl__xs_write(&gc, t, libxl__sprintf(&gc, "/local/pool/%d/uuid", 
*poolid),
-                 uuid_string);
-        libxl__xs_write(&gc, t, libxl__sprintf(&gc, "/local/pool/%d/name", 
*poolid),
-                 name);
+        libxl__xs_write(&gc, t,
+                        libxl__sprintf(&gc, "/local/pool/%d/uuid", *poolid),
+                        "%s", uuid_string);
+        libxl__xs_write(&gc, t,
+                        libxl__sprintf(&gc, "/local/pool/%d/name", *poolid),
+                        "%s", name);
 
         if (xs_transaction_end(ctx->xsh, t, 0) || (errno != EAGAIN))
             return 0;
@@ -4093,7 +4095,8 @@ int libxl_cpupool_movedomain(libxl_ctx *
         if (!vm_path)
             break;
 
-        libxl__xs_write(&gc, t, libxl__sprintf(&gc, "%s/pool_name", vm_path), 
poolname);
+        libxl__xs_write(&gc, t, libxl__sprintf(&gc, "%s/pool_name", vm_path),
+                        "%s", poolname);
 
         if (xs_transaction_end(ctx->xsh, t, 0) || (errno != EAGAIN))
             break;

_______________________________________________
Xen-changelog mailing list
Xen-changelog@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-changelog