root/include/linux/ipc.h

INCLUDED FROM

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef _LINUX_IPC_H
   3 #define _LINUX_IPC_H
   4 
   5 #include <linux/spinlock.h>
   6 #include <linux/uidgid.h>
   7 #include <linux/rhashtable-types.h>
   8 #include <uapi/linux/ipc.h>
   9 #include <linux/refcount.h>
  10 
  11 /* used by in-kernel data structures */
  12 struct kern_ipc_perm {
  13         spinlock_t      lock;
  14         bool            deleted;
  15         int             id;
  16         key_t           key;
  17         kuid_t          uid;
  18         kgid_t          gid;
  19         kuid_t          cuid;
  20         kgid_t          cgid;
  21         umode_t         mode;
  22         unsigned long   seq;
  23         void            *security;
  24 
  25         struct rhash_head khtnode;
  26 
  27         struct rcu_head rcu;
  28         refcount_t refcount;
  29 } ____cacheline_aligned_in_smp __randomize_layout;
  30 
  31 #endif /* _LINUX_IPC_H */