diff options
author | Samuel Thibault <samuel.thibault@ens-lyon.org> | 2013-07-27 22:07:53 +0000 |
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committer | Samuel Thibault <samuel.thibault@ens-lyon.org> | 2013-07-27 22:07:53 +0000 |
commit | 4fbe7358c7747a9165f776eb19addbb9baf7def2 (patch) | |
tree | bc7076b4f6d10c2cc2942539bb666e50f0b66954 /libdde_linux26/contrib/include/linux/sem.h | |
parent | 21adb5284111190057db245cfc2b54091920c373 (diff) |
rename libdde_linux26 into libdde-linux26 to make dpkg-source happy
Diffstat (limited to 'libdde_linux26/contrib/include/linux/sem.h')
-rw-r--r-- | libdde_linux26/contrib/include/linux/sem.h | 159 |
1 files changed, 0 insertions, 159 deletions
diff --git a/libdde_linux26/contrib/include/linux/sem.h b/libdde_linux26/contrib/include/linux/sem.h deleted file mode 100644 index 1b191c17..00000000 --- a/libdde_linux26/contrib/include/linux/sem.h +++ /dev/null @@ -1,159 +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 */ - -/* 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 */ - -#ifdef __KERNEL__ -#include <asm/atomic.h> -#include <linux/rcupdate.h> - -struct task_struct; - -/* One semaphore structure for each semaphore in the system. */ -struct sem { - int semval; /* current value */ - int sempid; /* pid of last operation */ -}; - -/* One sem_array data structure for each set of semaphores in the system. */ -struct sem_array { - struct kern_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 list_head sem_pending; /* pending operations to be processed */ - struct list_head list_id; /* undo requests on this array */ - unsigned long sem_nsems; /* no. of semaphores in array */ -}; - -/* One queue for each sleeping process in the system. */ -struct sem_queue { - struct list_head list; /* queue of pending operations */ - struct task_struct *sleeper; /* this process */ - struct sem_undo *undo; /* undo structure */ - int pid; /* process id of requesting process */ - int status; /* completion status of operation */ - struct sembuf *sops; /* array of pending operations */ - int nsops; /* number of operations */ - int alter; /* does the operation alter the array? */ -}; - -/* Each task has a list of undo requests. They are executed automatically - * when the process exits. - */ -struct sem_undo { - struct list_head list_proc; /* per-process list: all undos from one process. */ - /* rcu protected */ - struct rcu_head rcu; /* rcu struct for sem_undo() */ - struct sem_undo_list *ulp; /* sem_undo_list for the process */ - struct list_head list_id; /* per semaphore array list: all undos for one array */ - int semid; /* semaphore set identifier */ - short * semadj; /* array of adjustments, one per semaphore */ -}; - -/* sem_undo_list controls shared access to the list of sem_undo structures - * that may be shared among all a CLONE_SYSVSEM task group. - */ -struct sem_undo_list { - atomic_t refcnt; - spinlock_t lock; - struct list_head list_proc; -}; - -struct sysv_sem { - struct sem_undo_list *undo_list; -}; - -#ifdef CONFIG_SYSVIPC - -extern int copy_semundo(unsigned long clone_flags, struct task_struct *tsk); -extern void exit_sem(struct task_struct *tsk); - -#else -static inline int copy_semundo(unsigned long clone_flags, struct task_struct *tsk) -{ - return 0; -} - -static inline void exit_sem(struct task_struct *tsk) -{ - return; -} -#endif - -#endif /* __KERNEL__ */ - -#endif /* _LINUX_SEM_H */ |