install: suppress "Operation not supported" false alarms

At least, I *think* they are false alarms.  An SELinux expert eye
would be welcome.
* src/install.c (setdefaultfilecon): If selabel_lookup fails
due to either ENOTSUP or ENODATA, don’t diagnose the issue.
Problem reported by Kamil Dudka in:
https://lists.gnu.org/r/coreutils/2020-11/msg00050.html

diff --git a/src/install.c b/src/install.c
index eb6e403e790debae5e5e0533c3cbc8114e0e8a8b..dce29dbe1f8f86c29c4c402f70f1e62a0b5abf6f 100644 (file)
--- a/src/install.c
+++ b/src/install.c
@@ -339,7 +339,7 @@ setdefaultfilecon (char const *file)
     return;
   if (selabel_lookup (hnd, &scontext, file, st.st_mode) != 0)
     {
-      if (errno != ENOENT)
+      if (errno != ENOENT && ! ignorable_ctx_err (errno))
         error (0, errno, _("warning: %s: context lookup failed"),
                quotef (file));
       return;