include/linux/vserver/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_FORK_RSS            (1ULL<<48)
  40 #define VXF_PROLIFIC            (1ULL<<49)
  41
  42 #define VXF_IGNEG_NICE          (1ULL<<52)
  43
  44 #define VXF_ONE_TIME            (0x0003ULL<<32)
  45
  46
  47 /* context caps */
  48
  49 #define VXC_CAP_MASK            0x00000000
  50
  51 #define VXC_SET_UTSNAME         0x00000001
  52 #define VXC_SET_RLIMIT          0x00000002
  53
  54 #define VXC_RAW_ICMP            0x00000100
  55
  56 #define VXC_SECURE_MOUNT        0x00010000
  57 #define VXC_SECURE_REMOUNT      0x00020000
  58
  59
  60 /* vshelper sync commands */
  61
  62 #define VS_CONTEXT_CREATED      1
  63 #define VS_CONTEXT_DESTROY      2
  64
  65
  66 #ifdef  __KERNEL__
  67
  68 #include <linux/list.h>
  69 #include <linux/spinlock.h>
  70 #include <linux/rcupdate.h>
  71
  72 #include "limit_def.h"
  73 #include "sched_def.h"
  74 #include "cvirt_def.h"
  75
  76 struct vx_info {
  77         struct hlist_node vx_hlist;             /* linked list of contexts */
  78         struct rcu_head vx_rcu;                 /* the rcu head */
  79         xid_t vx_id;                            /* context id */
  80         atomic_t vx_usecnt;                     /* usage count */
  81         atomic_t vx_refcnt;                     /* reference count */
  82         struct vx_info *vx_parent;              /* parent context */
  83         int vx_state;                           /* context state */
  84
  85         struct namespace *vx_namespace;         /* private namespace */
  86         struct fs_struct *vx_fs;                /* private namespace fs */
  87         uint64_t vx_flags;                      /* context flags */
  88         uint64_t vx_bcaps;                      /* bounding caps (system) */
  89         uint64_t vx_ccaps;                      /* context caps (vserver) */
  90
  91         pid_t vx_initpid;                       /* PID of fake init process */
  92
  93         spinlock_t vx_lock;
  94         wait_queue_head_t vx_exit;              /* context exit waitqueue */
  95
  96         struct _vx_limit limit;                 /* vserver limits */
  97         struct _vx_sched sched;                 /* vserver scheduler */
  98         struct _vx_cvirt cvirt;                 /* virtual/bias stuff */
  99         struct _vx_cacct cacct;                 /* context accounting */
 100
 101         char vx_name[65];                       /* vserver name */
 102 };
 103
 104
 105 /* status flags */
 106
 107 #define VXS_HASHED      0x0001
 108 #define VXS_PAUSED      0x0010
 109 #define VXS_ONHOLD      0x0020
 110 #define VXS_SHUTDOWN    0x0100
 111 #define VXS_DEFUNCT     0x1000
 112 #define VXS_RELEASED    0x8000
 113
 114 /* check conditions */
 115
 116 #define VX_ADMIN        0x0001
 117 #define VX_WATCH        0x0002
 118 #define VX_HIDE         0x0004
 119 #define VX_HOSTID       0x0008
 120
 121 #define VX_IDENT        0x0010
 122 #define VX_EQUIV        0x0020
 123 #define VX_PARENT       0x0040
 124 #define VX_CHILD        0x0080
 125
 126 #define VX_ARG_MASK     0x00F0
 127
 128 #define VX_DYNAMIC      0x0100
 129 #define VX_STATIC       0x0200
 130
 131 #define VX_ATR_MASK     0x0F00
 132
 133
 134 struct rcu_head;
 135
 136 extern void unhash_vx_info(struct vx_info *);
 137
 138 extern void free_vx_info(struct vx_info *);
 139
 140 extern struct vx_info *locate_vx_info(int);
 141 extern struct vx_info *locate_or_create_vx_info(int);
 142
 143 extern int get_xid_list(int, unsigned int *, int);
 144 extern int vx_info_is_hashed(xid_t);
 145
 146 extern int vx_migrate_task(struct task_struct *, struct vx_info *);
 147
 148 // extern int proc_pid_vx_info(struct task_struct *, char *);
 149
 150 extern long vs_context_state(unsigned int);
 151
 152 #endif  /* __KERNEL__ */
 153 #else   /* _VX_CONTEXT_H */
 154 #warning duplicate inclusion
 155 #endif  /* _VX_CONTEXT_H */