chcon: use security_check_context() for context validation

context_new() and _free() are used for checking validity of a
specified context.  libselinux provides security_check_context
for this purpose so use it.

Note that context_new() can fail for a valid context - e.g. ENOMEM.

* src/chcon.c (main): Use security_check_context().

1 files changed, 2 insertions, 5 deletions

diff --git a/src/chcon.c b/src/chcon.c
index 32d4b0f8b..8c18167ff 100644
--- a/src/chcon.c
+++ b/src/chcon.c
@@ -555,13 +555,10 @@ main (int argc, char **argv)
     }
   else
     {
-      context_t context;
       specified_context = argv[optind++];
-      context = context_new (specified_context);
-      if (!context)
-        error (EXIT_FAILURE, 0, _("invalid context: %s"),
+      if (security_check_context (specified_context) < 0)
+        error (EXIT_FAILURE, errno, _("invalid context: %s"),
                quotearg_colon (specified_context));
-      context_free (context);
     }
 
   if (reference_file && component_specified)