include/linux/ipc.h

0001 /* SPDX-License-Identifier: GPL-2.0 */
0002 #ifndef _LINUX_IPC_H
0003 #define _LINUX_IPC_H
0004
0005 #include <linux/spinlock.h>
0006 #include <linux/uidgid.h>
0007 #include <linux/rhashtable-types.h>
0008 #include <uapi/linux/ipc.h>
0009 #include <linux/refcount.h>
0010
0011 /* used by in-kernel data structures */
0012 struct kern_ipc_perm {
0013     spinlock_t  lock;
0014     bool        deleted;
0015     int     id;
0016     key_t       key;
0017     kuid_t      uid;
0018     kgid_t      gid;
0019     kuid_t      cuid;
0020     kgid_t      cgid;
0021     umode_t     mode;
0022     unsigned long   seq;
0023     void        *security;
0024
0025     struct rhash_head khtnode;
0026
0027     struct rcu_head rcu;
0028     refcount_t refcount;
0029 } ____cacheline_aligned_in_smp __randomize_layout;
0030
0031 #endif /* _LINUX_IPC_H */