mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-24 06:36:09 +07:00
80 lines
2.2 KiB
C
80 lines
2.2 KiB
C
|
#ifndef _UAPI_LINUX_SHM_H_
|
||
|
|
#define _UAPI_LINUX_SHM_H_
|
||
|
|
|
||
|
|
#include <linux/ipc.h>
|
||
|
|
#include <linux/errno.h>
|
||
|
|
#ifndef __KERNEL__
|
||
|
|
#include <unistd.h>
|
||
|
|
#endif
|
||
|
|
|
||
|
|
/*
|
||
|
|
* SHMMAX, SHMMNI and SHMALL are upper limits are defaults which can
|
||
|
|
* be increased by sysctl
|
||
|
|
*/
|
||
|
|
|
||
|
|
#define SHMMAX 0x2000000 /* max shared seg size (bytes) */
|
||
|
|
#define SHMMIN 1 /* min shared seg size (bytes) */
|
||
|
|
#define SHMMNI 4096 /* max num of segs system wide */
|
||
|
|
#ifndef __KERNEL__
|
||
|
|
#define SHMALL (SHMMAX/getpagesize()*(SHMMNI/16))
|
||
|
|
#endif
|
||
|
|
#define SHMSEG SHMMNI /* max shared segs per process */
|
||
|
|
|
||
|
|
|
||
|
|
/* Obsolete, used only for backwards compatibility and libc5 compiles */
|
||
|
|
struct shmid_ds {
|
||
|
|
struct ipc_perm shm_perm; /* operation perms */
|
||
|
|
int shm_segsz; /* size of segment (bytes) */
|
||
|
|
__kernel_time_t shm_atime; /* last attach time */
|
||
|
|
__kernel_time_t shm_dtime; /* last detach time */
|
||
|
|
__kernel_time_t shm_ctime; /* last change time */
|
||
|
|
__kernel_ipc_pid_t shm_cpid; /* pid of creator */
|
||
|
|
__kernel_ipc_pid_t shm_lpid; /* pid of last operator */
|
||
|
|
unsigned short shm_nattch; /* no. of current attaches */
|
||
|
|
unsigned short shm_unused; /* compatibility */
|
||
|
|
void *shm_unused2; /* ditto - used by DIPC */
|
||
|
|
void *shm_unused3; /* unused */
|
||
|
|
};
|
||
|
|
|
||
|
|
/* Include the definition of shmid64_ds and shminfo64 */
|
||
|
|
#include <asm/shmbuf.h>
|
||
|
|
|
||
|
|
/* permission flag for shmget */
|
||
|
|
#define SHM_R 0400 /* or S_IRUGO from <linux/stat.h> */
|
||
|
|
#define SHM_W 0200 /* or S_IWUGO from <linux/stat.h> */
|
||
|
|
|
||
|
|
/* mode for attach */
|
||
|
|
#define SHM_RDONLY 010000 /* read-only access */
|
||
|
|
#define SHM_RND 020000 /* round attach address to SHMLBA boundary */
|
||
|
|
#define SHM_REMAP 040000 /* take-over region on attach */
|
||
|
|
#define SHM_EXEC 0100000 /* execution access */
|
||
|
|
|
||
|
|
/* super user shmctl commands */
|
||
|
|
#define SHM_LOCK 11
|
||
|
|
#define SHM_UNLOCK 12
|
||
|
|
|
||
|
|
/* ipcs ctl commands */
|
||
|
|
#define SHM_STAT 13
|
||
|
|
#define SHM_INFO 14
|
||
|
|
|
||
|
|
/* Obsolete, used only for backwards compatibility */
|
||
|
|
struct shminfo {
|
||
|
|
int shmmax;
|
||
|
|
int shmmin;
|
||
|
|
int shmmni;
|
||
|
|
int shmseg;
|
||
|
|
int shmall;
|
||
|
|
};
|
||
|
|
|
||
|
|
struct shm_info {
|
||
|
|
int used_ids;
|
||
|
|
unsigned long shm_tot; /* total allocated shm */
|
||
|
|
unsigned long shm_rss; /* total resident shm */
|
||
|
|
unsigned long shm_swp; /* total swapped shm */
|
||
|
|
unsigned long swap_attempts;
|
||
|
|
unsigned long swap_successes;
|
||
|
|
};
|
||
|
|
|
||
|
|
|
||
|
|
#endif /* _UAPI_LINUX_SHM_H_ */
|