include/minix/priv.h

   1 /* Privilege-related definitions. */
   2
   3 #ifndef _MINIX_PRIV_H
   4 #define _MINIX_PRIV_H
   5
   6 #include <minix/com.h>
   7 #include <minix/config.h>
   8
   9 /* Static privilege id definitions. */
  10 #define NR_STATIC_PRIV_IDS         NR_BOOT_PROCS
  11 #define is_static_priv_id(id)      (id >= 0 && id < NR_STATIC_PRIV_IDS)
  12 #define static_priv_id(n)          (NR_TASKS + (n))
  13
  14 /* Unprivileged user processes all share the privilege structure of the
  15  * user processesess.
  16  * This id must be fixed because it is used to check send mask entries.
  17  */
  18 #define USER_PRIV_ID    static_priv_id(ROOT_USR_PROC_NR)
  19 /* Specifies a null privilege id.
  20  */
  21 #define NULL_PRIV_ID    (-1)
  22
  23 /* Allowed targets. */
  24 #define NO_M      (-1)              /* no targets allowed */
  25 #define ALL_M     (-2)              /* all targets allowed */
  26
  27 /* Allowed calls. */
  28 #define NO_C      (-1)              /* no calls allowed */
  29 #define ALL_C     (-2)              /* all calls allowed */
  30 #define NULL_C    (-3)              /* null call entry */
  31
  32 /*
  33  * Default privilege settings used in the system
  34  */
  35 /* privilege flags */
  36 #define IDL_F     (SYS_PROC | BILLABLE) /* idle task is not preemptible as we
  37                                          * don't want it to interfere with the
  38                                          * timer tick interrupt handler code.
  39                                          * Unlike other processes idle task is
  40                                          * handled in a special way and is
  41                                          * preempted always if timer tick occurs
  42                                          * and there is another runnable process
  43                                          */
  44 #define TSK_F     (SYS_PROC)                       /* other kernel tasks */
  45 #define SRV_F     (SYS_PROC | PREEMPTIBLE)         /* system services */
  46 #define DSRV_F    (SRV_F | DYN_PRIV_ID)            /* dynamic system services */
  47 #define RSYS_F    (SRV_F | ROOT_SYS_PROC)          /* root sys proc */
  48 #define VM_F      (SYS_PROC | VM_SYS_PROC)         /* vm */
  49 #define USR_F     (BILLABLE | PREEMPTIBLE)         /* user processes */
  50 #define IMM_F     (ROOT_SYS_PROC | VM_SYS_PROC | PREEMPTIBLE) /* immutable */
  51
  52 /* allowed traps */
  53 #define CSK_T     (1 << RECEIVE)                   /* clock and system */
  54 #define TSK_T     0                                /* other kernel tasks */
  55 #define SRV_T     (~0)                             /* system services */
  56 #define DSRV_T    (~0)                             /* dynamic system services */
  57 #define USR_T     (1 << SENDREC)                   /* user processes */
  58
  59 /* allowed targets */
  60 #define TSK_M     NO_M                             /* all kernel tasks */
  61 #define SRV_M     ALL_M                            /* system services */
  62 #define DSRV_M    ALL_M                            /* dynamic system services */
  63 #define USR_M     ALL_M                            /* user processes */
  64
  65 /* allowed kernel calls */
  66 #define TSK_KC    NO_C                             /* all kernel tasks */
  67 #define SRV_KC    ALL_C                            /* dynamic system services */
  68 #define DSRV_KC   ALL_C                            /* default sys proc */
  69 #define USR_KC    NO_C                             /* user processes */
  70
  71 /* allowed vm calls */
  72 #define SRV_VC    ALL_C                            /* dynamic system services */
  73 #define DSRV_VC   ALL_C                            /* default sys proc */
  74 #define USR_VC    ALL_C                            /* user processes */
  75
  76 /* signal manager */
  77 #define SRV_SM    ROOT_SYS_PROC_NR                 /* system services */
  78 #define DSRV_SM   ROOT_SYS_PROC_NR                 /* dynamic system services */
  79 #define USR_SM    PM_PROC_NR                       /* user processes */
  80
  81 /* scheduler */
  82 #define SRV_SCH   KERNEL                           /* system services */
  83 #define DSRV_SCH  SCHED_PROC_NR                    /* dynamic system services */
  84 #define USR_SCH   NONE                             /* user processes */
  85
  86 /* scheduling priority queue. */
  87 #define SRV_Q     USER_Q                           /* system services */
  88 #define DSRV_Q    USER_Q                           /* dynamic system services */
  89 #define USR_Q     USER_Q                           /* user processes */
  90
  91 /* scheduling quantum. */
  92 #define SRV_QT    USER_QUANTUM                     /* system services */
  93 #define DSRV_QT   USER_QUANTUM                     /* dynamic system services */
  94 #define USR_QT    USER_QUANTUM                     /* user processes */
  95
  96 /* default CPU */
  97 #define DSRV_CPU USER_DEFAULT_CPU
  98
  99 #endif /* _MINIX_PRIV_H */