1 | /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ |
2 | #ifndef _UAPI_LINUX_IPC_H |
3 | #define _UAPI_LINUX_IPC_H |
4 | |
5 | #include <linux/types.h> |
6 | |
7 | #define IPC_PRIVATE ((__kernel_key_t) 0) |
8 | |
9 | /* Obsolete, used only for backwards compatibility and libc5 compiles */ |
10 | struct ipc_perm |
11 | { |
12 | __kernel_key_t key; |
13 | __kernel_uid_t uid; |
14 | __kernel_gid_t gid; |
15 | __kernel_uid_t cuid; |
16 | __kernel_gid_t cgid; |
17 | __kernel_mode_t mode; |
18 | unsigned short seq; |
19 | }; |
20 | |
21 | /* Include the definition of ipc64_perm */ |
22 | #include <asm/ipcbuf.h> |
23 | |
24 | /* resource get request flags */ |
25 | #define IPC_CREAT 00001000 /* create if key is nonexistent */ |
26 | #define IPC_EXCL 00002000 /* fail if key exists */ |
27 | #define IPC_NOWAIT 00004000 /* return error on wait */ |
28 | |
29 | /* these fields are used by the DIPC package so the kernel as standard |
30 | should avoid using them if possible */ |
31 | |
32 | #define IPC_DIPC 00010000 /* make it distributed */ |
33 | #define IPC_OWN 00020000 /* this machine is the DIPC owner */ |
34 | |
35 | /* |
36 | * Control commands used with semctl, msgctl and shmctl |
37 | * see also specific commands in sem.h, msg.h and shm.h |
38 | */ |
39 | #define IPC_RMID 0 /* remove resource */ |
40 | #define IPC_SET 1 /* set ipc_perm options */ |
41 | #define IPC_STAT 2 /* get ipc_perm options */ |
42 | #define IPC_INFO 3 /* see ipcs */ |
43 | |
44 | /* |
45 | * Version flags for semctl, msgctl, and shmctl commands |
46 | * These are passed as bitflags or-ed with the actual command |
47 | */ |
48 | #define IPC_OLD 0 /* Old version (no 32-bit UID support on many |
49 | architectures) */ |
50 | #define IPC_64 0x0100 /* New version (support 32-bit UIDs, bigger |
51 | message sizes, etc. */ |
52 | |
53 | /* |
54 | * These are used to wrap system calls. |
55 | * |
56 | * See architecture code for ugly details.. |
57 | */ |
58 | struct ipc_kludge { |
59 | struct msgbuf __user *msgp; |
60 | long msgtyp; |
61 | }; |
62 | |
63 | #define SEMOP 1 |
64 | #define SEMGET 2 |
65 | #define SEMCTL 3 |
66 | #define SEMTIMEDOP 4 |
67 | #define MSGSND 11 |
68 | #define MSGRCV 12 |
69 | #define MSGGET 13 |
70 | #define MSGCTL 14 |
71 | #define SHMAT 21 |
72 | #define SHMDT 22 |
73 | #define SHMGET 23 |
74 | #define SHMCTL 24 |
75 | |
76 | /* Used by the DIPC package, try and avoid reusing it */ |
77 | #define DIPC 25 |
78 | |
79 | #define IPCCALL(version,op) ((version)<<16 | (op)) |
80 | |
81 | |
82 | #endif /* _UAPI_LINUX_IPC_H */ |
83 | |