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-rw-r--r--include/linux/ipc.h75
1 files changed, 75 insertions, 0 deletions
diff --git a/include/linux/ipc.h b/include/linux/ipc.h
new file mode 100644
index 000000000000..b291189737e7
--- /dev/null
+++ b/include/linux/ipc.h
@@ -0,0 +1,75 @@
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 */
9struct 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 */
57struct 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