Adding upstream version 255.4.upstream/255.4

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 23 insertions, 0 deletions

diff --git a/src/shared/nsflags.h b/src/shared/nsflags.h
new file mode 100644
index 0000000..b59740c
--- /dev/null
+++ b/src/shared/nsflags.h
@@ -0,0 +1,23 @@
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+#pragma once
+
+#include "missing_sched.h"
+
+/* The combination of all namespace flags defined by the kernel. The right type for this isn't clear. setns() and
+ * unshare() expect these flags to be passed as (signed) "int", while clone() wants them as "unsigned long". The latter
+ * is definitely more appropriate for a flags parameter, and also the larger type of the two, hence let's stick to that
+ * here. */
+#define NAMESPACE_FLAGS_ALL                                             \
+        ((unsigned long) (CLONE_NEWCGROUP|                              \
+                          CLONE_NEWIPC|                                 \
+                          CLONE_NEWNET|                                 \
+                          CLONE_NEWNS|                                  \
+                          CLONE_NEWPID|                                 \
+                          CLONE_NEWUSER|                                \
+                          CLONE_NEWUTS))
+
+#define NAMESPACE_FLAGS_INITIAL  ULONG_MAX
+
+int namespace_flags_from_string(const char *name, unsigned long *ret);
+int namespace_flags_to_string(unsigned long flags, char **ret);
+const char *namespace_single_flag_to_string(unsigned long flag);