81 lines
2.6 KiB
C
81 lines
2.6 KiB
C
|
#ifndef _UAPI_LINUX_SEM_H
|
||
|
|
#define _UAPI_LINUX_SEM_H
|
||
|
|
|
||
|
|
#include <linux/ipc.h>
|
||
|
|
|
||
|
|
/* semop flags */
|
||
|
|
#define SEM_UNDO 0x1000 /* undo the operation on exit */
|
||
|
|
|
||
|
|
/* semctl Command Definitions. */
|
||
|
|
#define GETPID 11 /* get sempid */
|
||
|
|
#define GETVAL 12 /* get semval */
|
||
|
|
#define GETALL 13 /* get all semval's */
|
||
|
|
#define GETNCNT 14 /* get semncnt */
|
||
|
|
#define GETZCNT 15 /* get semzcnt */
|
||
|
|
#define SETVAL 16 /* set semval */
|
||
|
|
#define SETALL 17 /* set all semval's */
|
||
|
|
|
||
|
|
/* ipcs ctl cmds */
|
||
|
|
#define SEM_STAT 18
|
||
|
|
#define SEM_INFO 19
|
||
|
|
|
||
|
|
/* Obsolete, used only for backwards compatibility and libc5 compiles */
|
||
|
|
struct semid_ds {
|
||
|
|
struct ipc_perm sem_perm; /* permissions .. see ipc.h */
|
||
|
|
__kernel_time_t sem_otime; /* last semop time */
|
||
|
|
__kernel_time_t sem_ctime; /* last change time */
|
||
|
|
struct sem *sem_base; /* ptr to first semaphore in array */
|
||
|
|
struct sem_queue *sem_pending; /* pending operations to be processed */
|
||
|
|
struct sem_queue **sem_pending_last; /* last pending operation */
|
||
|
|
struct sem_undo *undo; /* undo requests on this array */
|
||
|
|
unsigned short sem_nsems; /* no. of semaphores in array */
|
||
|
|
};
|
||
|
|
|
||
|
|
/* Include the definition of semid64_ds */
|
||
|
|
#include <asm/sembuf.h>
|
||
|
|
|
||
|
|
/* semop system calls takes an array of these. */
|
||
|
|
struct sembuf {
|
||
|
|
unsigned short sem_num; /* semaphore index in array */
|
||
|
|
short sem_op; /* semaphore operation */
|
||
|
|
short sem_flg; /* operation flags */
|
||
|
|
};
|
||
|
|
|
||
|
|
/* arg for semctl system calls. */
|
||
|
|
union semun {
|
||
|
|
int val; /* value for SETVAL */
|
||
|
|
struct semid_ds __user *buf; /* buffer for IPC_STAT & IPC_SET */
|
||
|
|
unsigned short __user *array; /* array for GETALL & SETALL */
|
||
|
|
struct seminfo __user *__buf; /* buffer for IPC_INFO */
|
||
|
|
void __user *__pad;
|
||
|
|
};
|
||
|
|
|
||
|
|
struct seminfo {
|
||
|
|
int semmap;
|
||
|
|
int semmni;
|
||
|
|
int semmns;
|
||
|
|
int semmnu;
|
||
|
|
int semmsl;
|
||
|
|
int semopm;
|
||
|
|
int semume;
|
||
|
|
int semusz;
|
||
|
|
int semvmx;
|
||
|
|
int semaem;
|
||
|
|
};
|
||
|
|
|
||
|
|
#define SEMMNI 128 /* <= IPCMNI max # of semaphore identifiers */
|
||
|
|
#define SEMMSL 250 /* <= 8 000 max num of semaphores per id */
|
||
|
|
#define SEMMNS (SEMMNI*SEMMSL) /* <= INT_MAX max # of semaphores in system */
|
||
|
|
#define SEMOPM 32 /* <= 1 000 max num of ops per semop call */
|
||
|
|
#define SEMVMX 32767 /* <= 32767 semaphore maximum value */
|
||
|
|
#define SEMAEM SEMVMX /* adjust on exit max value */
|
||
|
|
|
||
|
|
/* unused */
|
||
|
|
#define SEMUME SEMOPM /* max num of undo entries per process */
|
||
|
|
#define SEMMNU SEMMNS /* num of undo structures system wide */
|
||
|
|
#define SEMMAP SEMMNS /* # of entries in semaphore map */
|
||
|
|
#define SEMUSZ 20 /* sizeof struct sem_undo */
|
||
|
|
|
||
|
|
|
||
|
|
#endif /* _UAPI_LINUX_SEM_H */
|