File xen.fa7789ef18bd2e716997937af71b2e4b5b00a159.patch of Package xen

From: =?UTF-8?q?Marek=20Marczykowski-G=C3=B3recki?=
 <marmarek@invisiblethingslab.com>
Date: Thu, 5 Apr 2018 03:50:49 +0200
Subject: fa7789ef18bd2e716997937af71b2e4b5b00a159
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

tools/libxc: fix strncpy size

gcc-8 warns about possible truncation of trailing '\0'.
Final character is overridden by '\0' anyway, so don't bother to copy
it.

This fixes compile failure:

    xc_pm.c: In function 'xc_set_cpufreq_gov':
    xc_pm.c:308:5: error: 'strncpy' specified bound 16 equals destination size [-Werror=stringop-truncation]
         strncpy(scaling_governor, govname, CPUFREQ_NAME_LEN);
         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    cc1: all warnings being treated as errors

Signed-off-by: Marek Marczykowski-Górecki <marmarek@invisiblethingslab.com>
Acked-by: Wei Liu <wei.liu2@citrix.com>
Release-Acked-by: Juergen Gross <jgross@suse.com>
---
 tools/libxc/xc_pm.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/tools/libxc/xc_pm.c
+++ b/tools/libxc/xc_pm.c
@@ -296,25 +296,25 @@ int xc_set_cpufreq_gov(xc_interface *xch, int cpuid, char *govname)
 {
     DECLARE_SYSCTL;
     char *scaling_governor = sysctl.u.pm_op.u.set_gov.scaling_governor;
 
     if ( !xch || !govname )
     {
         errno = EINVAL;
         return -1;
     }
     sysctl.cmd = XEN_SYSCTL_pm_op;
     sysctl.u.pm_op.cmd = SET_CPUFREQ_GOV;
     sysctl.u.pm_op.cpuid = cpuid;
-    strncpy(scaling_governor, govname, CPUFREQ_NAME_LEN);
+    strncpy(scaling_governor, govname, CPUFREQ_NAME_LEN - 1);
     scaling_governor[CPUFREQ_NAME_LEN - 1] = '\0';
 
     return xc_sysctl(xch, &sysctl);
 }
 
 int xc_set_cpufreq_para(xc_interface *xch, int cpuid, 
                         int ctrl_type, int ctrl_value)
 {
     DECLARE_SYSCTL;
 
     if ( !xch )
     {