X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=include%2Flinux%2Fvs_tag.h;fp=include%2Flinux%2Fvs_tag.h;h=781bcceba82c9d729ea2ea31c77553bad2782485;hb=76828883507a47dae78837ab5dec5a5b4513c667;hp=0000000000000000000000000000000000000000;hpb=64ba3f394c830ec48a1c31b53dcae312c56f1604;p=linux-2.6.git

diff --git a/include/linux/vs_tag.h b/include/linux/vs_tag.h
new file mode 100644
index 000000000..781bcceba
--- /dev/null
+++ b/include/linux/vs_tag.h
@@ -0,0 +1,44 @@
+#ifndef _VS_TAG_H
+#define _VS_TAG_H
+
+#include <linux/vserver/tag.h>
+
+/* check conditions */
+
+#define DX_ADMIN	0x0001
+#define DX_WATCH	0x0002
+#define DX_HOSTID	0x0008
+
+#define DX_IDENT	0x0010
+
+#define DX_ARG_MASK	0x0010
+
+
+#define dx_task_tag(t)	((t)->xid)
+
+#define dx_current_tag() dx_task_tag(current)
+
+#define dx_check(c,m)	__dx_check(dx_current_tag(),c,m)
+
+#define dx_weak_check(c,m)	((m) ? dx_check(c,m) : 1)
+
+
+/*
+ * check current context for ADMIN/WATCH and
+ * optionally against supplied argument
+ */
+static inline int __dx_check(tag_t cid, tag_t id, unsigned int mode)
+{
+	if (mode & DX_ARG_MASK) {
+		if ((mode & DX_IDENT) &&
+			(id == cid))
+			return 1;
+	}
+	return (((mode & DX_ADMIN) && (cid == 0)) ||
+		((mode & DX_WATCH) && (cid == 1)) ||
+		((mode & DX_HOSTID) && (id == 0)));
+}
+
+#else
+#warning duplicate inclusion
+#endif