[Xen-devel] [PATCH] tools/xl: refuse to set number of vcpus to 0 via xl vcpu-set

[Juergen Gross <jgross@xxxxxxxx>]

Trying to set the number of vcpus of a domain to 0 isn't refused.
We should not allow that.

Signed-off-by: Juergen Gross <jgross@xxxxxxxx>
---
 tools/xl/xl_vcpu.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/tools/xl/xl_vcpu.c b/tools/xl/xl_vcpu.c
index aef486864c..45ac01beda 100644
--- a/tools/xl/xl_vcpu.c
+++ b/tools/xl/xl_vcpu.c
@@ -341,6 +341,10 @@ static int vcpuset(uint32_t domid, const char* nr_vcpus, 
int check_host)
         fprintf(stderr, "Error: Invalid argument.\n");
         return 1;
     }
+    if (nr_vcpus == 0) {
+        fprintf(stderr, "Error: Setting number of vcpus to 0 isn't 
allowed.\n");
+        return 1;
+    }
 
     /*
      * Maximum amount of vCPUS the guest is allowed to set is limited
-- 
2.16.4


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