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      1 /****************************************************************************
      2  ****************************************************************************
      3  ***
      4  ***   This header was automatically generated from a Linux kernel header
      5  ***   of the same name, to make information necessary for userspace to
      6  ***   call into the kernel available to libc.  It contains only constants,
      7  ***   structures, and macros generated from the original header, and thus,
      8  ***   contains no copyrightable information.
      9  ***
     10  ***   To edit the content of this header, modify the corresponding
     11  ***   source file (e.g. under external/kernel-headers/original/) then
     12  ***   run bionic/libc/kernel/tools/update_all.py
     13  ***
     14  ***   Any manual change here will be lost the next time this script will
     15  ***   be run. You've been warned!
     16  ***
     17  ****************************************************************************
     18  ****************************************************************************/
     19 #ifndef _UAPI_PR_H
     20 #define _UAPI_PR_H
     21 enum pr_type {
     22   PR_WRITE_EXCLUSIVE = 1,
     23   PR_EXCLUSIVE_ACCESS = 2,
     24   PR_WRITE_EXCLUSIVE_REG_ONLY = 3,
     25   PR_EXCLUSIVE_ACCESS_REG_ONLY = 4,
     26   PR_WRITE_EXCLUSIVE_ALL_REGS = 5,
     27   PR_EXCLUSIVE_ACCESS_ALL_REGS = 6,
     28 };
     29 struct pr_reservation {
     30   __u64 key;
     31   __u32 type;
     32   __u32 flags;
     33 };
     34 struct pr_registration {
     35   __u64 old_key;
     36   __u64 new_key;
     37   __u32 flags;
     38   __u32 __pad;
     39 };
     40 struct pr_preempt {
     41   __u64 old_key;
     42   __u64 new_key;
     43   __u32 type;
     44   __u32 flags;
     45 };
     46 struct pr_clear {
     47   __u64 key;
     48   __u32 flags;
     49   __u32 __pad;
     50 };
     51 #define PR_FL_IGNORE_KEY (1 << 0)
     52 #define IOC_PR_REGISTER _IOW('p', 200, struct pr_registration)
     53 #define IOC_PR_RESERVE _IOW('p', 201, struct pr_reservation)
     54 #define IOC_PR_RELEASE _IOW('p', 202, struct pr_reservation)
     55 #define IOC_PR_PREEMPT _IOW('p', 203, struct pr_preempt)
     56 #define IOC_PR_PREEMPT_ABORT _IOW('p', 204, struct pr_preempt)
     57 #define IOC_PR_CLEAR _IOW('p', 205, struct pr_clear)
     58 #endif
     59