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 #define VXF_SCHED_SHARE         0x00000800
  28
  29 #define VXF_VIRT_MEM            0x00010000
  30 #define VXF_VIRT_UPTIME         0x00020000
  31 #define VXF_VIRT_CPU            0x00040000
  32 #define VXF_VIRT_LOAD           0x00080000
  33
  34 #define VXF_HIDE_MOUNT          0x01000000
  35 #define VXF_HIDE_NETIF          0x02000000
  36
  37 #define VXF_STATE_SETUP         (1ULL<<32)
  38 #define VXF_STATE_INIT          (1ULL<<33)
  39
  40 #define VXF_SC_HELPER           (1ULL<<36)
  41 #define VXF_REBOOT_KILL         (1ULL<<37)
  42 #define VXF_PERSISTENT          (1ULL<<38)
  43
  44 #define VXF_FORK_RSS            (1ULL<<48)
  45 #define VXF_PROLIFIC            (1ULL<<49)
  46
  47 #define VXF_IGNEG_NICE          (1ULL<<52)
  48
  49 #define VXF_ONE_TIME            (0x0003ULL<<32)
  50
  51 #define VXF_INIT_SET            (VXF_STATE_SETUP|VXF_STATE_INIT)
  52
  53
  54 /* context migration */
  55
  56 #define VXM_SET_INIT            0x00000001
  57 #define VXM_SET_REAPER          0x00000002
  58
  59 /* context caps */
  60
  61 #define VXC_CAP_MASK            0x00000000
  62
  63 #define VXC_SET_UTSNAME         0x00000001
  64 #define VXC_SET_RLIMIT          0x00000002
  65
  66 #define VXC_RAW_ICMP            0x00000100
  67 #define VXC_SYSLOG              0x00001000
  68
  69 #define VXC_SECURE_MOUNT        0x00010000
  70 #define VXC_SECURE_REMOUNT      0x00020000
  71 #define VXC_BINARY_MOUNT        0x00040000
  72
  73 #define VXC_QUOTA_CTL           0x00100000
  74
  75
  76 /* context state changes */
  77
  78 enum {
  79         VSC_STARTUP = 1,
  80         VSC_SHUTDOWN,
  81
  82         VSC_NETUP,
  83         VSC_NETDOWN,
  84 };
  85
  86
  87 #ifdef  __KERNEL__
  88
  89 #include <linux/list.h>
  90 #include <linux/spinlock.h>
  91 #include <linux/rcupdate.h>
  92
  93 #include "limit_def.h"
  94 #include "sched_def.h"
  95 #include "cvirt_def.h"
  96
  97 struct vx_info {
  98         struct hlist_node vx_hlist;             /* linked list of contexts */
  99         xid_t vx_id;                            /* context id */
 100         atomic_t vx_usecnt;                     /* usage count */
 101         atomic_t vx_tasks;                      /* tasks count */
 102         struct vx_info *vx_parent;              /* parent context */
 103         int vx_state;                           /* context state */
 104
 105         struct namespace *vx_namespace;         /* private namespace */
 106         struct fs_struct *vx_fs;                /* private namespace fs */
 107         uint64_t vx_flags;                      /* context flags */
 108         uint64_t vx_bcaps;                      /* bounding caps (system) */
 109         uint64_t vx_ccaps;                      /* context caps (vserver) */
 110
 111         struct task_struct *vx_reaper;          /* guest reaper process */
 112         pid_t vx_initpid;                       /* PID of guest init */
 113
 114         struct _vx_limit limit;                 /* vserver limits */
 115         struct _vx_sched sched;                 /* vserver scheduler */
 116         struct _vx_cvirt cvirt;                 /* virtual/bias stuff */
 117         struct _vx_cacct cacct;                 /* context accounting */
 118
 119         wait_queue_head_t vx_wait;              /* context exit waitqueue */
 120         int reboot_cmd;                         /* last sys_reboot() cmd */
 121         int exit_code;                          /* last process exit code */
 122
 123         char vx_name[65];                       /* vserver name */
 124 };
 125
 126
 127 /* status flags */
 128
 129 #define VXS_HASHED      0x0001
 130 #define VXS_PAUSED      0x0010
 131 #define VXS_ONHOLD      0x0020
 132 #define VXS_SHUTDOWN    0x0100
 133 #define VXS_HELPER      0x1000
 134 #define VXS_RELEASED    0x8000
 135
 136 /* check conditions */
 137
 138 #define VX_ADMIN        0x0001
 139 #define VX_WATCH        0x0002
 140 #define VX_HIDE         0x0004
 141 #define VX_HOSTID       0x0008
 142
 143 #define VX_IDENT        0x0010
 144 #define VX_EQUIV        0x0020
 145 #define VX_PARENT       0x0040
 146 #define VX_CHILD        0x0080
 147
 148 #define VX_ARG_MASK     0x00F0
 149
 150 #define VX_DYNAMIC      0x0100
 151 #define VX_STATIC       0x0200
 152
 153 #define VX_ATR_MASK     0x0F00
 154
 155
 156 extern void claim_vx_info(struct vx_info *, struct task_struct *);
 157 extern void release_vx_info(struct vx_info *, struct task_struct *);
 158
 159 extern struct vx_info *lookup_vx_info(int);
 160 extern struct vx_info *lookup_or_create_vx_info(int);
 161
 162 extern int get_xid_list(int, unsigned int *, int);
 163 extern int xid_is_hashed(xid_t);
 164
 165 extern int vx_migrate_task(struct task_struct *, struct vx_info *);
 166
 167 extern long vs_state_change(struct vx_info *, unsigned int);
 168
 169
 170 #endif  /* __KERNEL__ */
 171 #else   /* _VX_CONTEXT_H */
 172 #warning duplicate inclusion
 173 #endif  /* _VX_CONTEXT_H */