[net-next-2.6.git] / include / linux / ipc.h

#ifndef _LINUX_IPC_H
#define _LINUX_IPC_H

#include <linux/types.h>

#define IPC_PRIVATE ((__kernel_key_t) 0)  

/* Obsolete, used only for backwards compatibility and libc5 compiles */
struct ipc_perm
{
	__kernel_key_t	key;
	__kernel_uid_t	uid;
	__kernel_gid_t	gid;
	__kernel_uid_t	cuid;
	__kernel_gid_t	cgid;
	__kernel_mode_t	mode; 
	unsigned short	seq;
};

/* Include the definition of ipc64_perm */
#include <asm/ipcbuf.h>

/* resource get request flags */
#define IPC_CREAT  00001000   /* create if key is nonexistent */
#define IPC_EXCL   00002000   /* fail if key exists */
#define IPC_NOWAIT 00004000   /* return error on wait */

/* these fields are used by the DIPC package so the kernel as standard
   should avoid using them if possible */
   
#define IPC_DIPC 00010000  /* make it distributed */
#define IPC_OWN  00020000  /* this machine is the DIPC owner */

/* 
 * Control commands used with semctl, msgctl and shmctl 
 * see also specific commands in sem.h, msg.h and shm.h
 */
#define IPC_RMID 0     /* remove resource */
#define IPC_SET  1     /* set ipc_perm options */
#define IPC_STAT 2     /* get ipc_perm options */
#define IPC_INFO 3     /* see ipcs */

/*
 * Version flags for semctl, msgctl, and shmctl commands
 * These are passed as bitflags or-ed with the actual command
 */
#define IPC_OLD 0	/* Old version (no 32-bit UID support on many
			   architectures) */
#define IPC_64  0x0100  /* New version (support 32-bit UIDs, bigger
			   message sizes, etc. */

/*
 * These are used to wrap system calls.
 *
 * See architecture code for ugly details..
 */
struct ipc_kludge {
	struct msgbuf __user *msgp;
	long msgtyp;
};

#define SEMOP		 1
#define SEMGET		 2
#define SEMCTL		 3
#define SEMTIMEDOP	 4
#define MSGSND		11
#define MSGRCV		12
#define MSGGET		13
#define MSGCTL		14
#define SHMAT		21
#define SHMDT		22
#define SHMGET		23
#define SHMCTL		24

/* Used by the DIPC package, try and avoid reusing it */
#define DIPC            25

#define IPCCALL(version,op)	((version)<<16 | (op))

#ifdef __KERNEL__
#include <linux/spinlock.h>

#define IPCMNI 32768  /* <= MAX_INT limit for ipc arrays (including sysctl changes) */

/* used by in-kernel data structures */
struct kern_ipc_perm
{
	spinlock_t	lock;
	int		deleted;
	int		id;
	key_t		key;
	uid_t		uid;
	gid_t		gid;
	uid_t		cuid;
	gid_t		cgid;
	mode_t		mode; 
	unsigned long	seq;
	void		*security;
};

#endif /* __KERNEL__ */

#endif /* _LINUX_IPC_H */
Commit	Line	Data
1da177e4 LT	1	#ifndef _LINUX_IPC_H
	2	#define _LINUX_IPC_H
	3
	4	#include <linux/types.h>
	5
	6	#define IPC_PRIVATE ((__kernel_key_t) 0)
	7
	8	/* Obsolete, used only for backwards compatibility and libc5 compiles */
	9	struct ipc_perm
	10	{
	11	__kernel_key_t key;
	12	__kernel_uid_t uid;
	13	__kernel_gid_t gid;
	14	__kernel_uid_t cuid;
	15	__kernel_gid_t cgid;
	16	__kernel_mode_t mode;
	17	unsigned short seq;
	18	};
	19
	20	/* Include the definition of ipc64_perm */
	21	#include <asm/ipcbuf.h>
	22
	23	/* resource get request flags */
	24	#define IPC_CREAT 00001000 /* create if key is nonexistent */
	25	#define IPC_EXCL 00002000 /* fail if key exists */
	26	#define IPC_NOWAIT 00004000 /* return error on wait */
	27
	28	/* these fields are used by the DIPC package so the kernel as standard
	29	should avoid using them if possible */
	30
	31	#define IPC_DIPC 00010000 /* make it distributed */
	32	#define IPC_OWN 00020000 /* this machine is the DIPC owner */
	33
	34	/*
	35	* Control commands used with semctl, msgctl and shmctl
	36	* see also specific commands in sem.h, msg.h and shm.h
	37	*/
	38	#define IPC_RMID 0 /* remove resource */
	39	#define IPC_SET 1 /* set ipc_perm options */
	40	#define IPC_STAT 2 /* get ipc_perm options */
	41	#define IPC_INFO 3 /* see ipcs */
	42
	43	/*
	44	* Version flags for semctl, msgctl, and shmctl commands
	45	* These are passed as bitflags or-ed with the actual command
	46	*/
	47	#define IPC_OLD 0 /* Old version (no 32-bit UID support on many
	48	architectures) */
	49	#define IPC_64 0x0100 /* New version (support 32-bit UIDs, bigger
	50	message sizes, etc. */
	51
cba4fbbf AB	52	/*
	53	* These are used to wrap system calls.
	54	*
	55	* See architecture code for ugly details..
	56	*/
	57	struct ipc_kludge {
	58	struct msgbuf __user *msgp;
	59	long msgtyp;
	60	};
	61
	62	#define SEMOP 1
	63	#define SEMGET 2
	64	#define SEMCTL 3
	65	#define SEMTIMEDOP 4
	66	#define MSGSND 11
	67	#define MSGRCV 12
	68	#define MSGGET 13
	69	#define MSGCTL 14
	70	#define SHMAT 21
	71	#define SHMDT 22
	72	#define SHMGET 23
	73	#define SHMCTL 24
	74
	75	/* Used by the DIPC package, try and avoid reusing it */
	76	#define DIPC 25
	77
	78	#define IPCCALL(version,op) ((version)<<16 \| (op))
	79
1da177e4	80	#ifdef __KERNEL__
0a3021f4	81	#include <linux/spinlock.h>
b119f13f	82
1da177e4 LT	83	#define IPCMNI 32768 /* <= MAX_INT limit for ipc arrays (including sysctl changes) */
	84
	85	/* used by in-kernel data structures */
	86	struct kern_ipc_perm
	87	{
	88	spinlock_t lock;
	89	int deleted;
7ca7e564	90	int id;
1da177e4 LT	91	key_t key;
	92	uid_t uid;
	93	gid_t gid;
	94	uid_t cuid;
	95	gid_t cgid;
	96	mode_t mode;
	97	unsigned long seq;
	98	void *security;
	99	};
	100
	101	#endif /* __KERNEL__ */
	102
	103	#endif /* _LINUX_IPC_H */