[Xen-changelog] [xen stable-4.6] libxl: cdrom eject and insert: write to /libxl

[patchbot@xxxxxxx]

commit 59572d4edf926a02d593873f264902f71ec26d8a
Author:     Ian Jackson <ian.jackson@xxxxxxxxxxxxx>
AuthorDate: Fri Apr 29 19:15:13 2016 +0100
Commit:     Ian Jackson <Ian.Jackson@xxxxxxxxxxxxx>
CommitDate: Mon Jun 6 14:47:35 2016 +0100

    libxl: cdrom eject and insert: write to /libxl
    
    Copy the new type and params values to /libxl, so that the information
    in /libxl is kept up to date.
    
    This is needed so that we can return this trustworthy information,
    rather than trusting the backend-writeable parts of xenstore.
    
    This is part of XSA-178.
    
    Signed-off-by: Ian Jackson <ian.jackson@xxxxxxxxxxxxx>
    Reviewed-by: Wei Liu <wei.liu2@xxxxxxxxxx>
---
 tools/libxl/libxl.c | 19 ++++++++++++++-----
 1 file changed, 14 insertions(+), 5 deletions(-)

diff --git a/tools/libxl/libxl.c b/tools/libxl/libxl.c
index feb5d8f..f1c81da 100644
--- a/tools/libxl/libxl.c
+++ b/tools/libxl/libxl.c
@@ -2868,7 +2868,7 @@ int libxl_cdrom_insert(libxl_ctx *ctx, uint32_t domid, 
libxl_device_disk *disk,
     libxl_domain_config d_config;
     int rc, dm_ver;
     libxl__device device;
-    const char * path;
+    const char *path, *libxl_path;
     char * tmp;
     libxl__domain_userdata_lock *lock = NULL;
     xs_transaction_t t = XBT_NULL;
@@ -2936,6 +2936,7 @@ int libxl_cdrom_insert(libxl_ctx *ctx, uint32_t domid, 
libxl_device_disk *disk,
     if (rc) goto out;
 
     path = libxl__device_backend_path(gc, &device);
+    libxl_path = libxl__device_libxl_path(gc, &device);
 
     insert = flexarray_make(gc, 4, 1);
 
@@ -2984,8 +2985,12 @@ int libxl_cdrom_insert(libxl_ctx *ctx, uint32_t domid, 
libxl_device_disk *disk,
             goto out;
         }
 
-        rc = libxl__xs_writev(gc, t, path,
-                              libxl__xs_kvs_of_flexarray(gc, empty, 
empty->count));
+        char **kvs = libxl__xs_kvs_of_flexarray(gc, empty, empty->count);
+
+        rc = libxl__xs_writev(gc, t, path, kvs);
+        if (rc) goto out;
+
+        rc = libxl__xs_writev(gc, t, libxl_path, kvs);
         if (rc) goto out;
 
         rc = libxl__xs_transaction_commit(gc, &t);
@@ -3019,8 +3024,12 @@ int libxl_cdrom_insert(libxl_ctx *ctx, uint32_t domid, 
libxl_device_disk *disk,
         rc = libxl__set_domain_configuration(gc, domid, &d_config);
         if (rc) goto out;
 
-        rc = libxl__xs_writev(gc, t, path,
-                              libxl__xs_kvs_of_flexarray(gc, insert, 
insert->count));
+        char **kvs = libxl__xs_kvs_of_flexarray(gc, insert, insert->count);
+
+        rc = libxl__xs_writev(gc, t, path, kvs);
+        if (rc) goto out;
+
+        rc = libxl__xs_writev(gc, t, libxl_path, kvs);
         if (rc) goto out;
 
         rc = libxl__xs_transaction_commit(gc, &t);
--
generated by git-patchbot for /home/xen/git/xen.git#stable-4.6

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