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. */

#ifdef __KERNEL__

#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;
	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 */


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
52	#ifdef __KERNEL__
53
54	#define IPCMNI 32768 /* <= MAX_INT limit for ipc arrays (including sysctl changes) */
55
56	/* used by in-kernel data structures */
57	struct kern_ipc_perm
58	{
59	spinlock_t lock;
60	int deleted;
61	key_t key;
62	uid_t uid;
63	gid_t gid;
64	uid_t cuid;
65	gid_t cgid;
66	mode_t mode;
67	unsigned long seq;
68	void *security;
69	};
70
71	#endif /* __KERNEL__ */
72
73	#endif /* _LINUX_IPC_H */
74
75