cregit-Linux how code gets into the kernel

Release 4.11 arch/mn10300/include/uapi/asm/shmbuf.h

#ifndef _ASM_SHMBUF_H

#define _ASM_SHMBUF_H

/*
 * The shmid64_ds structure for MN10300 architecture.
 * Note extra padding because this structure is passed back and forth
 * between kernel and user space.
 *
 * Pad space is left for:
 * - 64-bit time_t to solve y2038 problem
 * - 2 miscellaneous 32-bit values
 */


struct shmid64_ds {
	
struct ipc64_perm	shm_perm;	/* operation perms */
	
size_t			shm_segsz;	/* size of segment (bytes) */
	
__kernel_time_t		shm_atime;	/* last attach time */
	
unsigned long		__unused1;
	
__kernel_time_t		shm_dtime;	/* last detach time */
	
unsigned long		__unused2;
	
__kernel_time_t		shm_ctime;	/* last change time */
	
unsigned long		__unused3;
	
__kernel_pid_t		shm_cpid;	/* pid of creator */
	
__kernel_pid_t		shm_lpid;	/* pid of last operator */
	
unsigned long		shm_nattch;	/* no. of current attaches */
	
unsigned long		__unused4;
	
unsigned long		__unused5;
};


struct shminfo64 {
	
unsigned long	shmmax;
	
unsigned long	shmmin;
	
unsigned long	shmmni;
	
unsigned long	shmseg;
	
unsigned long	shmall;
	
unsigned long	__unused1;
	
unsigned long	__unused2;
	
unsigned long	__unused3;
	
unsigned long	__unused4;
};

#endif /* _ASM_SHMBUF_H */

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