X-Git-Url: http://git.liburcu.org/?a=blobdiff_plain;f=wrapper%2Fuser_namespace.h;fp=wrapper%2Fuser_namespace.h;h=701f3189b5c97f8e1f006c175e0bbd755d66b052;hb=dc923e75c174ee4e7a80e5f9af1dfd39fb8346ea;hp=0000000000000000000000000000000000000000;hpb=a6cf40a4491954d6f81052f8bbce757f73727f16;p=lttng-modules.git

diff --git a/wrapper/user_namespace.h b/wrapper/user_namespace.h
new file mode 100644
index 00000000..701f3189
--- /dev/null
+++ b/wrapper/user_namespace.h
@@ -0,0 +1,61 @@
+/* SPDX-License-Identifier: (GPL-2.0 or LGPL-2.1)
+ *
+ * wrapper/user_namespace.h
+ *
+ * Copyright (C) 2019 Michael Jeanson <mjeanson@efficios.com>
+ *
+ */
+
+#ifndef _LTTNG_WRAPPER_USER_NAMESPACE_H
+#define _LTTNG_WRAPPER_USER_NAMESPACE_H
+
+#include <linux/version.h>
+#include <linux/user_namespace.h>
+
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(3, 5, 0)
+
+#define lttng_current_xxuid(xxx)				\
+	(from_kuid_munged(&init_user_ns, current_##xxx()))
+
+#define lttng_current_vxxuid(xxx)				\
+	(from_kuid_munged(current_user_ns(), current_##xxx()))
+
+#define lttng_current_xxgid(xxx)				\
+	(from_kgid_munged(&init_user_ns, current_##xxx()))
+
+#define lttng_current_vxxgid(xxx)				\
+	(from_kgid_munged(current_user_ns(), current_##xxx()))
+
+#else
+
+#define lttng_current_xxuid(xxx)	(current_##xxx())
+
+#define lttng_current_vxxuid(xxx)					\
+	(user_ns_map_uid(current_user_ns(), current_cred(), current_##xxx()))
+
+#define lttng_current_xxgid(xxx)	(current_##xxx())
+
+#define lttng_current_vxxgid(xxx)					\
+	(user_ns_map_gid(current_user_ns(), current_cred(), current_##xxx()))
+#endif
+
+#define lttng_current_uid()	(lttng_current_xxuid(uid))
+#define lttng_current_euid()	(lttng_current_xxuid(euid))
+#define lttng_current_suid()	(lttng_current_xxuid(suid))
+#define lttng_current_fsuid()	(lttng_current_xxuid(fsuid))
+#define lttng_current_gid()	(lttng_current_xxgid(gid))
+#define lttng_current_egid()	(lttng_current_xxgid(egid))
+#define lttng_current_sgid()	(lttng_current_xxgid(sgid))
+#define lttng_current_fsgid()	(lttng_current_xxgid(fsgid))
+
+#define lttng_current_vuid()	(lttng_current_vxxuid(uid))
+#define lttng_current_veuid()	(lttng_current_vxxuid(euid))
+#define lttng_current_vsuid()	(lttng_current_vxxuid(suid))
+#define lttng_current_vfsuid()	(lttng_current_vxxuid(fsuid))
+#define lttng_current_vgid()	(lttng_current_vxxgid(gid))
+#define lttng_current_vegid()	(lttng_current_vxxgid(egid))
+#define lttng_current_vsgid()	(lttng_current_vxxgid(sgid))
+#define lttng_current_vfsgid()	(lttng_current_vxxgid(fsgid))
+
+#endif /* _LTTNG_WRAPPER_USER_NAMESPACE_H */