updated to 2.6.13.3-vs2.1.0-rc4 headers
[util-vserver.git] / util-vserver / kernel / context.h
1 #ifndef _VX_CONTEXT_H
2 #define _VX_CONTEXT_H
3
4 #include <linux/types.h>
5
6
7 #define MAX_S_CONTEXT   65535   /* Arbitrary limit */
8 #define MIN_D_CONTEXT   49152   /* dynamic contexts start here */
9
10 #define VX_DYNAMIC_ID   ((uint32_t)-1)          /* id for dynamic context */
11
12 /* context flags */
13
14 #define VXF_INFO_LOCK           0x00000001
15 #define VXF_INFO_SCHED          0x00000002
16 #define VXF_INFO_NPROC          0x00000004
17 #define VXF_INFO_PRIVATE        0x00000008
18
19 #define VXF_INFO_INIT           0x00000010
20 #define VXF_INFO_HIDE           0x00000020
21 #define VXF_INFO_ULIMIT         0x00000040
22 #define VXF_INFO_NSPACE         0x00000080
23
24 #define VXF_SCHED_HARD          0x00000100
25 #define VXF_SCHED_PRIO          0x00000200
26 #define VXF_SCHED_PAUSE         0x00000400
27
28 #define VXF_VIRT_MEM            0x00010000
29 #define VXF_VIRT_UPTIME         0x00020000
30 #define VXF_VIRT_CPU            0x00040000
31 #define VXF_VIRT_LOAD           0x00080000
32
33 #define VXF_HIDE_MOUNT          0x01000000
34 #define VXF_HIDE_NETIF          0x02000000
35
36 #define VXF_STATE_SETUP         (1ULL<<32)
37 #define VXF_STATE_INIT          (1ULL<<33)
38
39 #define VXF_SC_HELPER           (1ULL<<36)
40 #define VXF_REBOOT_KILL         (1ULL<<37)
41
42 #define VXF_FORK_RSS            (1ULL<<48)
43 #define VXF_PROLIFIC            (1ULL<<49)
44
45 #define VXF_IGNEG_NICE          (1ULL<<52)
46
47 #define VXF_ONE_TIME            (0x0003ULL<<32)
48
49 #define VXF_INIT_SET            (VXF_STATE_SETUP|VXF_STATE_INIT)
50
51
52 /* context caps */
53
54 #define VXC_CAP_MASK            0x00000000
55
56 #define VXC_SET_UTSNAME         0x00000001
57 #define VXC_SET_RLIMIT          0x00000002
58
59 #define VXC_RAW_ICMP            0x00000100
60 #define VXC_SYSLOG              0x00001000
61
62 #define VXC_SECURE_MOUNT        0x00010000
63 #define VXC_SECURE_REMOUNT      0x00020000
64 #define VXC_BINARY_MOUNT        0x00040000
65
66 #define VXC_QUOTA_CTL           0x00100000
67
68
69 /* context state changes */
70
71 enum {
72         VSC_STARTUP = 1,
73         VSC_SHUTDOWN,
74
75         VSC_NETUP,
76         VSC_NETDOWN,
77 };
78
79
80 #ifdef  __KERNEL__
81
82 #include <linux/list.h>
83 #include <linux/spinlock.h>
84 #include <linux/rcupdate.h>
85
86 #include "limit_def.h"
87 #include "sched_def.h"
88 #include "cvirt_def.h"
89
90 struct vx_info {
91         struct hlist_node vx_hlist;             /* linked list of contexts */
92         xid_t vx_id;                            /* context id */
93         atomic_t vx_usecnt;                     /* usage count */
94         atomic_t vx_tasks;                      /* tasks count */
95         struct vx_info *vx_parent;              /* parent context */
96         int vx_state;                           /* context state */
97
98         struct namespace *vx_namespace;         /* private namespace */
99         struct fs_struct *vx_fs;                /* private namespace fs */
100         uint64_t vx_flags;                      /* context flags */
101         uint64_t vx_bcaps;                      /* bounding caps (system) */
102         uint64_t vx_ccaps;                      /* context caps (vserver) */
103
104         pid_t vx_initpid;                       /* PID of fake init process */
105
106         wait_queue_head_t vx_wait;              /* context exit waitqueue */
107
108         struct _vx_limit limit;                 /* vserver limits */
109         struct _vx_sched sched;                 /* vserver scheduler */
110         struct _vx_cvirt cvirt;                 /* virtual/bias stuff */
111         struct _vx_cacct cacct;                 /* context accounting */
112
113         char vx_name[65];                       /* vserver name */
114 };
115
116 struct vx_info_save {
117         struct vx_info *vxi;
118         xid_t xid;
119 };
120
121
122 /* status flags */
123
124 #define VXS_HASHED      0x0001
125 #define VXS_PAUSED      0x0010
126 #define VXS_ONHOLD      0x0020
127 #define VXS_SHUTDOWN    0x0100
128 #define VXS_RELEASED    0x8000
129
130 /* check conditions */
131
132 #define VX_ADMIN        0x0001
133 #define VX_WATCH        0x0002
134 #define VX_HIDE         0x0004
135 #define VX_HOSTID       0x0008
136
137 #define VX_IDENT        0x0010
138 #define VX_EQUIV        0x0020
139 #define VX_PARENT       0x0040
140 #define VX_CHILD        0x0080
141
142 #define VX_ARG_MASK     0x00F0
143
144 #define VX_DYNAMIC      0x0100
145 #define VX_STATIC       0x0200
146
147 #define VX_ATR_MASK     0x0F00
148
149
150 extern void claim_vx_info(struct vx_info *, struct task_struct *);
151 extern void release_vx_info(struct vx_info *, struct task_struct *);
152
153 extern struct vx_info *lookup_vx_info(int);
154 extern struct vx_info *lookup_or_create_vx_info(int);
155
156 extern int get_xid_list(int, unsigned int *, int);
157 extern int xid_is_hashed(xid_t);
158
159 extern int vx_migrate_task(struct task_struct *, struct vx_info *);
160
161 extern long vs_state_change(struct vx_info *, unsigned int);
162
163
164 #endif  /* __KERNEL__ */
165 #else   /* _VX_CONTEXT_H */
166 #warning duplicate inclusion
167 #endif  /* _VX_CONTEXT_H */