diff options
Diffstat (limited to 'i386/i386at/gpl/linux/include/linux/sem.h')
| -rw-r--r-- | i386/i386at/gpl/linux/include/linux/sem.h | 112 |
1 files changed, 0 insertions, 112 deletions
diff --git a/i386/i386at/gpl/linux/include/linux/sem.h b/i386/i386at/gpl/linux/include/linux/sem.h deleted file mode 100644 index 0eb1d024..00000000 --- a/i386/i386at/gpl/linux/include/linux/sem.h +++ /dev/null @@ -1,112 +0,0 @@ -#ifndef _LINUX_SEM_H -#define _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 */ - -/* One semid data structure for each set of semaphores in the system. */ -struct semid_ds { - struct ipc_perm sem_perm; /* permissions .. see ipc.h */ - time_t sem_otime; /* last semop time */ - 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 */ - ushort sem_nsems; /* no. of semaphores in array */ -}; - -/* semop system calls takes an array of these. */ -struct sembuf { - ushort 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 *buf; /* buffer for IPC_STAT & IPC_SET */ - ushort *array; /* array for GETALL & SETALL */ - struct seminfo *__buf; /* buffer for IPC_INFO */ - void *__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 /* ? max # of semaphore identifiers */ -#define SEMMSL 32 /* <= 512 max num of semaphores per id */ -#define SEMMNS (SEMMNI*SEMMSL) /* ? max # of semaphores in system */ -#define SEMOPM 32 /* ~ 100 max num of ops per semop call */ -#define SEMVMX 32767 /* semaphore maximum value */ - -/* unused */ -#define SEMUME SEMOPM /* max num of undo entries per process */ -#define SEMMNU SEMMNS /* num of undo structures system wide */ -#define SEMAEM (SEMVMX >> 1) /* adjust on exit max value */ -#define SEMMAP SEMMNS /* # of entries in semaphore map */ -#define SEMUSZ 20 /* sizeof struct sem_undo */ - -#ifdef __KERNEL__ - -/* One semaphore structure for each semaphore in the system. */ -struct sem { - short semval; /* current value */ - short sempid; /* pid of last operation */ -}; - -/* ipcs ctl cmds */ -#define SEM_STAT 18 -#define SEM_INFO 19 - -/* One queue for each semaphore set in the system. */ -struct sem_queue { - struct sem_queue * next; /* next entry in the queue */ - struct sem_queue ** prev; /* previous entry in the queue, *(q->prev) == q */ - struct wait_queue * sleeper; /* sleeping process */ - struct sem_undo * undo; /* undo structure */ - int pid; /* process id of requesting process */ - int status; /* completion status of operation */ - struct semid_ds * sma; /* semaphore array for operations */ - struct sembuf * sops; /* array of pending operations */ - int nsops; /* number of operations */ -}; - -/* Each task has a list of undo requests. They are executed automatically - * when the process exits. - */ -struct sem_undo { - struct sem_undo * proc_next; /* next entry on this process */ - struct sem_undo * id_next; /* next entry on this semaphore set */ - int semid; /* semaphore set identifier */ - short * semadj; /* array of adjustments, one per semaphore */ -}; - -asmlinkage int sys_semget (key_t key, int nsems, int semflg); -asmlinkage int sys_semop (int semid, struct sembuf *sops, unsigned nsops); -asmlinkage int sys_semctl (int semid, int semnum, int cmd, union semun arg); - -#endif /* __KERNEL__ */ - -#endif /* _LINUX_SEM_H */ |