root/include/uapi/linux/pr.h

INCLUDED FROM

   1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
   2 #ifndef _UAPI_PR_H
   3 #define _UAPI_PR_H
   4 
   5 #include <linux/types.h>
   6 
   7 enum pr_type {
   8         PR_WRITE_EXCLUSIVE              = 1,
   9         PR_EXCLUSIVE_ACCESS             = 2,
  10         PR_WRITE_EXCLUSIVE_REG_ONLY     = 3,
  11         PR_EXCLUSIVE_ACCESS_REG_ONLY    = 4,
  12         PR_WRITE_EXCLUSIVE_ALL_REGS     = 5,
  13         PR_EXCLUSIVE_ACCESS_ALL_REGS    = 6,
  14 };
  15 
  16 struct pr_reservation {
  17         __u64   key;
  18         __u32   type;
  19         __u32   flags;
  20 };
  21 
  22 struct pr_registration {
  23         __u64   old_key;
  24         __u64   new_key;
  25         __u32   flags;
  26         __u32   __pad;
  27 };
  28 
  29 struct pr_preempt {
  30         __u64   old_key;
  31         __u64   new_key;
  32         __u32   type;
  33         __u32   flags;
  34 };
  35 
  36 struct pr_clear {
  37         __u64   key;
  38         __u32   flags;
  39         __u32   __pad;
  40 };
  41 
  42 #define PR_FL_IGNORE_KEY        (1 << 0)        /* ignore existing key */
  43 
  44 #define IOC_PR_REGISTER         _IOW('p', 200, struct pr_registration)
  45 #define IOC_PR_RESERVE          _IOW('p', 201, struct pr_reservation)
  46 #define IOC_PR_RELEASE          _IOW('p', 202, struct pr_reservation)
  47 #define IOC_PR_PREEMPT          _IOW('p', 203, struct pr_preempt)
  48 #define IOC_PR_PREEMPT_ABORT    _IOW('p', 204, struct pr_preempt)
  49 #define IOC_PR_CLEAR            _IOW('p', 205, struct pr_clear)
  50 
  51 #endif /* _UAPI_PR_H */