include/linux/vserver/context.h

   1 #ifndef _VX_CONTEXT_H
   2 #define _VX_CONTEXT_H
   3
   4 #include <linux/types.h>
   5 #include <linux/capability.h>
   6
   7
   8 #define VX_DYNAMIC_ID   ((uint32_t)-1)          /* id for dynamic context */
   9
  10 /* context flags */
  11
  12 #define VXF_INFO_SCHED          0x00000002
  13 #define VXF_INFO_NPROC          0x00000004
  14 #define VXF_INFO_PRIVATE        0x00000008
  15
  16 #define VXF_INFO_INIT           0x00000010
  17 #define VXF_INFO_HIDE           0x00000020
  18 #define VXF_INFO_ULIMIT         0x00000040
  19 #define VXF_INFO_NSPACE         0x00000080
  20
  21 #define VXF_SCHED_HARD          0x00000100
  22 #define VXF_SCHED_PRIO          0x00000200
  23 #define VXF_SCHED_PAUSE         0x00000400
  24
  25 #define VXF_VIRT_MEM            0x00010000
  26 #define VXF_VIRT_UPTIME         0x00020000
  27 #define VXF_VIRT_CPU            0x00040000
  28 #define VXF_VIRT_LOAD           0x00080000
  29 #define VXF_VIRT_TIME           0x00100000
  30
  31 #define VXF_HIDE_MOUNT          0x01000000
  32 #define VXF_HIDE_NETIF          0x02000000
  33 #define VXF_HIDE_VINFO          0x04000000
  34
  35 #define VXF_STATE_SETUP         (1ULL<<32)
  36 #define VXF_STATE_INIT          (1ULL<<33)
  37 #define VXF_STATE_ADMIN         (1ULL<<34)
  38
  39 #define VXF_SC_HELPER           (1ULL<<36)
  40 #define VXF_REBOOT_KILL         (1ULL<<37)
  41 #define VXF_PERSISTENT          (1ULL<<38)
  42
  43 #define VXF_FORK_RSS            (1ULL<<48)
  44 #define VXF_PROLIFIC            (1ULL<<49)
  45
  46 #define VXF_IGNEG_NICE          (1ULL<<52)
  47
  48 #define VXF_ONE_TIME            (0x0007ULL<<32)
  49
  50 #define VXF_INIT_SET            (VXF_STATE_SETUP|VXF_STATE_INIT|VXF_STATE_ADMIN)
  51
  52
  53 /* context migration */
  54
  55 #define VXM_SET_INIT            0x00000001
  56 #define VXM_SET_REAPER          0x00000002
  57
  58 /* context caps */
  59
  60 #define VXC_CAP_MASK            0x00000000
  61
  62 #define VXC_SET_UTSNAME         0x00000001
  63 #define VXC_SET_RLIMIT          0x00000002
  64
  65 #define VXC_RAW_ICMP            0x00000100
  66 #define VXC_SYSLOG              0x00001000
  67
  68 #define VXC_SECURE_MOUNT        0x00010000
  69 #define VXC_SECURE_REMOUNT      0x00020000
  70 #define VXC_BINARY_MOUNT        0x00040000
  71
  72 #define VXC_QUOTA_CTL           0x00100000
  73 #define VXC_ADMIN_MAPPER        0x00200000
  74 #define VXC_ADMIN_CLOOP         0x00400000
  75
  76
  77 #ifdef  __KERNEL__
  78
  79 #include <linux/list.h>
  80 #include <linux/spinlock.h>
  81 #include <linux/rcupdate.h>
  82
  83 #include "limit_def.h"
  84 #include "sched_def.h"
  85 #include "cvirt_def.h"
  86 #include "cacct_def.h"
  87
  88 struct _vx_info_pc {
  89         struct _vx_sched_pc sched_pc;
  90         struct _vx_cvirt_pc cvirt_pc;
  91 };
  92
  93 struct vx_info {
  94         struct hlist_node vx_hlist;             /* linked list of contexts */
  95         xid_t vx_id;                            /* context id */
  96         atomic_t vx_usecnt;                     /* usage count */
  97         atomic_t vx_tasks;                      /* tasks count */
  98         struct vx_info *vx_parent;              /* parent context */
  99         int vx_state;                           /* context state */
 100
 101         unsigned long vx_nsmask;                /* assignment mask */
 102         struct nsproxy *vx_nsproxy;             /* private namespace */
 103         struct fs_struct *vx_fs;                /* private namespace fs */
 104
 105         uint64_t vx_flags;                      /* context flags */
 106         uint64_t vx_bcaps;                      /* bounding caps (system) */
 107         uint64_t vx_ccaps;                      /* context caps (vserver) */
 108         kernel_cap_t vx_cap_bset;               /* the guest's bset */
 109
 110         struct task_struct *vx_reaper;          /* guest reaper process */
 111         pid_t vx_initpid;                       /* PID of guest init */
 112
 113         struct _vx_limit limit;                 /* vserver limits */
 114         struct _vx_sched sched;                 /* vserver scheduler */
 115         struct _vx_cvirt cvirt;                 /* virtual/bias stuff */
 116         struct _vx_cacct cacct;                 /* context accounting */
 117
 118 #ifndef CONFIG_SMP
 119         struct _vx_info_pc info_pc;             /* per cpu data */
 120 #else
 121         struct _vx_info_pc *ptr_pc;             /* per cpu array */
 122 #endif
 123
 124         wait_queue_head_t vx_wait;              /* context exit waitqueue */
 125         int reboot_cmd;                         /* last sys_reboot() cmd */
 126         int exit_code;                          /* last process exit code */
 127
 128         char vx_name[65];                       /* vserver name */
 129 };
 130
 131 #ifndef CONFIG_SMP
 132 #define vx_ptr_pc(vxi)          (&(vxi)->info_pc)
 133 #define vx_per_cpu(vxi, v, id)  vx_ptr_pc(vxi)->v
 134 #else
 135 #define vx_ptr_pc(vxi)          ((vxi)->ptr_pc)
 136 #define vx_per_cpu(vxi, v, id)  per_cpu_ptr(vx_ptr_pc(vxi), id)->v
 137 #endif
 138
 139 #define vx_cpu(vxi, v)          vx_per_cpu(vxi, v, smp_processor_id())
 140
 141
 142 struct vx_info_save {
 143         struct vx_info *vxi;
 144         xid_t xid;
 145 };
 146
 147
 148 /* status flags */
 149
 150 #define VXS_HASHED      0x0001
 151 #define VXS_PAUSED      0x0010
 152 #define VXS_SHUTDOWN    0x0100
 153 #define VXS_HELPER      0x1000
 154 #define VXS_RELEASED    0x8000
 155
 156
 157 extern void claim_vx_info(struct vx_info *, struct task_struct *);
 158 extern void release_vx_info(struct vx_info *, struct task_struct *);
 159
 160 extern struct vx_info *lookup_vx_info(int);
 161 extern struct vx_info *lookup_or_create_vx_info(int);
 162
 163 extern int get_xid_list(int, unsigned int *, int);
 164 extern int xid_is_hashed(xid_t);
 165
 166 extern int vx_migrate_task(struct task_struct *, struct vx_info *, int);
 167
 168 extern long vs_state_change(struct vx_info *, unsigned int);
 169
 170
 171 #endif  /* __KERNEL__ */
 172 #endif  /* _VX_CONTEXT_H */