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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 422 | giacomo | 1 | #ifndef _LINUX_IPC_H |
| 2 | #define _LINUX_IPC_H |
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| 3 | |||
| 4 | #include <linux/types.h> |
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| 5 | |||
| 6 | #define IPC_PRIVATE ((__kernel_key_t) 0) |
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| 7 | |||
| 8 | /* Obsolete, used only for backwards compatibility and libc5 compiles */ |
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| 9 | struct ipc_perm |
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| 10 | { |
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| 11 | __kernel_key_t key; |
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| 12 | __kernel_uid_t uid; |
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| 13 | __kernel_gid_t gid; |
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| 14 | __kernel_uid_t cuid; |
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| 15 | __kernel_gid_t cgid; |
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| 16 | __kernel_mode_t mode; |
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| 17 | unsigned short seq; |
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| 18 | }; |
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| 19 | |||
| 20 | /* Include the definition of ipc64_perm */ |
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| 21 | #include <asm/ipcbuf.h> |
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| 22 | |||
| 23 | /* resource get request flags */ |
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| 24 | #define IPC_CREAT 00001000 /* create if key is nonexistent */ |
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| 25 | #define IPC_EXCL 00002000 /* fail if key exists */ |
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| 26 | #define IPC_NOWAIT 00004000 /* return error on wait */ |
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| 27 | |||
| 28 | /* these fields are used by the DIPC package so the kernel as standard |
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| 29 | should avoid using them if possible */ |
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| 30 | |||
| 31 | #define IPC_DIPC 00010000 /* make it distributed */ |
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| 32 | #define IPC_OWN 00020000 /* this machine is the DIPC owner */ |
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| 33 | |||
| 34 | /* |
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| 35 | * Control commands used with semctl, msgctl and shmctl |
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| 36 | * see also specific commands in sem.h, msg.h and shm.h |
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| 37 | */ |
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| 38 | #define IPC_RMID 0 /* remove resource */ |
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| 39 | #define IPC_SET 1 /* set ipc_perm options */ |
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| 40 | #define IPC_STAT 2 /* get ipc_perm options */ |
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| 41 | #define IPC_INFO 3 /* see ipcs */ |
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| 42 | |||
| 43 | /* |
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| 44 | * Version flags for semctl, msgctl, and shmctl commands |
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| 45 | * These are passed as bitflags or-ed with the actual command |
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| 46 | */ |
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| 47 | #define IPC_OLD 0 /* Old version (no 32-bit UID support on many |
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| 48 | architectures) */ |
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| 49 | #define IPC_64 0x0100 /* New version (support 32-bit UIDs, bigger |
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| 50 | message sizes, etc. */ |
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| 51 | |||
| 52 | #ifdef __KERNEL__ |
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| 53 | |||
| 54 | #define IPCMNI 32768 /* <= MAX_INT limit for ipc arrays (including sysctl changes) */ |
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| 55 | |||
| 56 | /* used by in-kernel data structures */ |
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| 57 | struct kern_ipc_perm |
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| 58 | { |
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| 59 | spinlock_t lock; |
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| 60 | int deleted; |
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| 61 | key_t key; |
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| 62 | uid_t uid; |
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| 63 | gid_t gid; |
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| 64 | uid_t cuid; |
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| 65 | gid_t cgid; |
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| 66 | mode_t mode; |
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| 67 | unsigned long seq; |
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| 68 | void *security; |
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| 69 | }; |
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| 70 | |||
| 71 | #endif /* __KERNEL__ */ |
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| 72 | |||
| 73 | #endif /* _LINUX_IPC_H */ |
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| 74 | |||
| 75 |