diff options
author | David Howells <dhowells@redhat.com> | 2012-10-13 13:46:48 +0400 |
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committer | David Howells <dhowells@redhat.com> | 2012-10-13 13:46:48 +0400 |
commit | 607ca46e97a1b6594b29647d98a32d545c24bdff (patch) | |
tree | 30f4c0784bfddb57332cdc0678bd06d1e77fa185 /include/uapi/linux/sem.h | |
parent | 08cce05c5a91f5017f4edc9866cf026908c73f9f (diff) | |
download | linux-607ca46e97a1b6594b29647d98a32d545c24bdff.tar.xz |
UAPI: (Scripted) Disintegrate include/linux
Signed-off-by: David Howells <dhowells@redhat.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Michael Kerrisk <mtk.manpages@gmail.com>
Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Acked-by: Dave Jones <davej@redhat.com>
Diffstat (limited to 'include/uapi/linux/sem.h')
-rw-r--r-- | include/uapi/linux/sem.h | 80 |
1 files changed, 80 insertions, 0 deletions
diff --git a/include/uapi/linux/sem.h b/include/uapi/linux/sem.h new file mode 100644 index 000000000000..541fce03b50c --- /dev/null +++ b/include/uapi/linux/sem.h @@ -0,0 +1,80 @@ +#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 */ |