diff options
Diffstat (limited to 'include/linux/ipc.h')
-rw-r--r-- | include/linux/ipc.h | 75 |
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 */ | ||
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 | |||