X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=include%2Flinux%2Fvserver%2Fbase.h;fp=include%2Flinux%2Fvserver%2Fbase.h;h=3261ea05130e9fa691be26f911468dc90a2043fe;hb=76828883507a47dae78837ab5dec5a5b4513c667;hp=0000000000000000000000000000000000000000;hpb=64ba3f394c830ec48a1c31b53dcae312c56f1604;p=linux-2.6.git

diff --git a/include/linux/vserver/base.h b/include/linux/vserver/base.h
new file mode 100644
index 000000000..3261ea051
--- /dev/null
+++ b/include/linux/vserver/base.h
@@ -0,0 +1,237 @@
+#ifndef _VX_BASE_H
+#define _VX_BASE_H
+
+
+/* context state changes */
+
+enum {
+	VSC_STARTUP = 1,
+	VSC_SHUTDOWN,
+
+	VSC_NETUP,
+	VSC_NETDOWN,
+};
+
+
+#define MAX_S_CONTEXT	65535	/* Arbitrary limit */
+
+#ifdef	CONFIG_VSERVER_DYNAMIC_IDS
+#define MIN_D_CONTEXT	49152	/* dynamic contexts start here */
+#else
+#define MIN_D_CONTEXT	65536
+#endif
+
+/* check conditions */
+
+#define VS_ADMIN	0x0001
+#define VS_WATCH	0x0002
+#define VS_HIDE		0x0004
+#define VS_HOSTID	0x0008
+
+#define VS_IDENT	0x0010
+#define VS_EQUIV	0x0020
+#define VS_PARENT	0x0040
+#define VS_CHILD	0x0080
+
+#define VS_ARG_MASK	0x00F0
+
+#define VS_DYNAMIC	0x0100
+#define VS_STATIC	0x0200
+
+#define VS_ATR_MASK	0x0F00
+
+#ifdef	CONFIG_VSERVER_PRIVACY
+#define VS_ADMIN_P	(0)
+#define VS_WATCH_P	(0)
+#else
+#define VS_ADMIN_P	VS_ADMIN
+#define VS_WATCH_P	VS_WATCH
+#endif
+
+#define VS_HARDIRQ	0x1000
+#define VS_SOFTIRQ	0x2000
+#define VS_IRQ		0x4000
+
+#define VS_IRQ_MASK	0xF000
+
+#include <linux/hardirq.h>
+
+/*
+ * check current context for ADMIN/WATCH and
+ * optionally against supplied argument
+ */
+static inline int __vs_check(int cid, int id, unsigned int mode)
+{
+	if (mode & VS_ARG_MASK) {
+		if ((mode & VS_IDENT) &&
+			(id == cid))
+			return 1;
+	}
+	if (mode & VS_ATR_MASK) {
+		if ((mode & VS_DYNAMIC) &&
+			(id >= MIN_D_CONTEXT) &&
+			(id <= MAX_S_CONTEXT))
+			return 1;
+		if ((mode & VS_STATIC) &&
+			(id > 1) && (id < MIN_D_CONTEXT))
+			return 1;
+	}
+	if (mode & VS_IRQ_MASK) {
+		if ((mode & VS_IRQ) && unlikely(in_interrupt()))
+			return 1;
+		if ((mode & VS_HARDIRQ) && unlikely(in_irq()))
+			return 1;
+		if ((mode & VS_SOFTIRQ) && unlikely(in_softirq()))
+			return 1;
+	}
+	return (((mode & VS_ADMIN) && (cid == 0)) ||
+		((mode & VS_WATCH) && (cid == 1)) ||
+		((mode & VS_HOSTID) && (id == 0)));
+}
+
+#define vx_task_xid(t)	((t)->xid)
+
+#define vx_current_xid() vx_task_xid(current)
+
+#define current_vx_info() (current->vx_info)
+
+
+#define vx_check(c,m)	__vs_check(vx_current_xid(),c,(m)|VS_IRQ)
+
+#define vx_weak_check(c,m)	((m) ? vx_check(c,m) : 1)
+
+
+#define nx_task_nid(t)	((t)->nid)
+
+#define nx_current_nid() nx_task_nid(current)
+
+#define current_nx_info() (current->nx_info)
+
+
+#define nx_check(c,m)	__vs_check(nx_current_nid(),c,m)
+
+#define nx_weak_check(c,m)	((m) ? nx_check(c,m) : 1)
+
+
+
+/* generic flag merging */
+
+#define vs_check_flags(v,m,f)	(((v) & (m)) ^ (f))
+
+#define vs_mask_flags(v,f,m)	(((v) & ~(m)) | ((f) & (m)))
+
+#define vs_mask_mask(v,f,m)	(((v) & ~(m)) | ((v) & (f) & (m)))
+
+#define vs_check_bit(v,n)	((v) & (1LL << (n)))
+
+
+/* context flags */
+
+#define __vx_flags(v)	((v) ? (v)->vx_flags : 0)
+
+#define vx_current_flags()	__vx_flags(current->vx_info)
+
+#define vx_info_flags(v,m,f) \
+	vs_check_flags(__vx_flags(v),(m),(f))
+
+#define task_vx_flags(t,m,f) \
+	((t) && vx_info_flags((t)->vx_info, (m), (f)))
+
+#define vx_flags(m,f)	vx_info_flags(current->vx_info,(m),(f))
+
+
+/* context caps */
+
+#define __vx_ccaps(v)	((v) ? (v)->vx_ccaps : 0)
+
+#define vx_current_ccaps()	__vx_ccaps(current->vx_info)
+
+#define vx_info_ccaps(v,c)	(__vx_ccaps(v) & (c))
+
+#define vx_ccaps(c)	vx_info_ccaps(current->vx_info,(c))
+
+
+
+/* network flags */
+
+#define __nx_flags(v)	((v) ? (v)->nx_flags : 0)
+
+#define nx_current_flags()	__nx_flags(current->nx_info)
+
+#define nx_info_flags(v,m,f) \
+	vs_check_flags(__nx_flags(v),(m),(f))
+
+#define task_nx_flags(t,m,f) \
+	((t) && nx_info_flags((t)->nx_info, (m), (f)))
+
+#define nx_flags(m,f)	nx_info_flags(current->nx_info,(m),(f))
+
+
+/* network caps */
+
+#define __nx_ncaps(v)	((v) ? (v)->nx_ncaps : 0)
+
+#define nx_current_ncaps()	__nx_ncaps(current->nx_info)
+
+#define nx_info_ncaps(v,c)	(__nx_ncaps(v) & (c))
+
+#define nx_ncaps(c)	nx_info_ncaps(current->nx_info,(c))
+
+
+/* context mask capabilities */
+
+#define __vx_mcaps(v)	((v) ? (v)->vx_ccaps >> 32UL : ~0 )
+
+#define vx_info_mcaps(v,c)	(__vx_mcaps(v) & (c))
+
+#define vx_mcaps(c)	vx_info_mcaps(current->vx_info,(c))
+
+
+/* context bcap mask */
+
+#define __vx_bcaps(v)	((v) ? (v)->vx_bcaps : ~0 )
+
+#define vx_current_bcaps()	__vx_bcaps(current->vx_info)
+
+#define vx_info_bcaps(v,c)	(__vx_bcaps(v) & (c))
+
+#define vx_bcaps(c)	vx_info_bcaps(current->vx_info,(c))
+
+
+#define vx_info_cap_bset(v)	((v) ? (v)->vx_cap_bset : cap_bset)
+
+#define vx_current_cap_bset()	vx_info_cap_bset(current->vx_info)
+
+
+#define __vx_info_mbcap(v,b) \
+	(!vx_info_flags(v, VXF_STATE_SETUP, 0) ? \
+	vx_info_bcaps(v, b) : (b))
+
+#define vx_info_mbcap(v,b)	__vx_info_mbcap(v,cap_t(b))
+
+#define task_vx_mbcap(t,b) \
+	vx_info_mbcap((t)->vx_info, (t)->b)
+
+#define vx_mbcap(b)	task_vx_mbcap(current,b)
+
+#define vx_cap_raised(v,c,f)	(vx_info_mbcap(v,c) & CAP_TO_MASK(f))
+
+#define vx_capable(b,c) (capable(b) || \
+	(cap_raised(current->cap_effective,b) && vx_ccaps(c)))
+
+
+#define vx_current_initpid(n) \
+	(current->vx_info && \
+	(current->vx_info->vx_initpid == (n)))
+
+
+#define __vx_state(v)	((v) ? ((v)->vx_state) : 0)
+
+#define vx_info_state(v,m)	(__vx_state(v) & (m))
+
+
+#define __nx_state(v)	((v) ? ((v)->nx_state) : 0)
+
+#define nx_info_state(v,m)	(__nx_state(v) & (m))
+
+#endif