Merge pull request #33 from eric-ch/s9-oxt-1622

S9: OXT-1622: surfman: xc_domain_getinfo usage.

Author: jean-edouard

libsurfman/src/xc.c

@@ -37,18 +37,21 @@ void xc_init (void)
     }
 }
 
-int xc_domid_exists (int domid)
+int xc_domid_getinfo(int domid, xc_dominfo_t *info)
 {
-  xc_dominfo_t info;
   int rc;
 
-  rc = xc_domain_getinfo (xch, domid, 1, &info);
-  return rc >= 0 ? info.domid == (domid_t)domid : 0;
+  rc = xc_domain_getinfo (xch, domid, 1, info);
+  if (rc == 1)
+    return info->domid == (domid_t)domid ? 1 : -ENOENT;
+  return rc;
 }
 
-int xc_domid_getinfo(int domid, xc_dominfo_t *info)
+int xc_domid_exists(int domid)
 {
-  return xc_domain_getinfo (xch, domid, 1, info);
+  xc_dominfo_t info = { 0 };
+
+  return !!xc_domid_getinfo(domid, &info);
 }
 
 void *xc_mmap_foreign(void *addr, size_t length, int prot,

surfman/src/domain.c

@@ -35,7 +35,7 @@ domain_dying (struct domain *d)
 {
   xc_dominfo_t info;
 
-  if (!xc_domid_getinfo (d->domid, &info))
+  if (xc_domid_getinfo (d->domid, &info) != 1)
     return 0;
   return info.dying;
 }