1*6f52b16cSGreg Kroah-Hartman /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ 2607ca46eSDavid Howells #ifndef _UAPI_LINUX_IPC_H 3607ca46eSDavid Howells #define _UAPI_LINUX_IPC_H 4607ca46eSDavid Howells 5607ca46eSDavid Howells #include <linux/types.h> 6607ca46eSDavid Howells 7607ca46eSDavid Howells #define IPC_PRIVATE ((__kernel_key_t) 0) 8607ca46eSDavid Howells 9607ca46eSDavid Howells /* Obsolete, used only for backwards compatibility and libc5 compiles */ 10607ca46eSDavid Howells struct ipc_perm 11607ca46eSDavid Howells { 12607ca46eSDavid Howells __kernel_key_t key; 13607ca46eSDavid Howells __kernel_uid_t uid; 14607ca46eSDavid Howells __kernel_gid_t gid; 15607ca46eSDavid Howells __kernel_uid_t cuid; 16607ca46eSDavid Howells __kernel_gid_t cgid; 17607ca46eSDavid Howells __kernel_mode_t mode; 18607ca46eSDavid Howells unsigned short seq; 19607ca46eSDavid Howells }; 20607ca46eSDavid Howells 21607ca46eSDavid Howells /* Include the definition of ipc64_perm */ 22607ca46eSDavid Howells #include <asm/ipcbuf.h> 23607ca46eSDavid Howells 24607ca46eSDavid Howells /* resource get request flags */ 25607ca46eSDavid Howells #define IPC_CREAT 00001000 /* create if key is nonexistent */ 26607ca46eSDavid Howells #define IPC_EXCL 00002000 /* fail if key exists */ 27607ca46eSDavid Howells #define IPC_NOWAIT 00004000 /* return error on wait */ 28607ca46eSDavid Howells 29607ca46eSDavid Howells /* these fields are used by the DIPC package so the kernel as standard 30607ca46eSDavid Howells should avoid using them if possible */ 31607ca46eSDavid Howells 32607ca46eSDavid Howells #define IPC_DIPC 00010000 /* make it distributed */ 33607ca46eSDavid Howells #define IPC_OWN 00020000 /* this machine is the DIPC owner */ 34607ca46eSDavid Howells 35607ca46eSDavid Howells /* 36607ca46eSDavid Howells * Control commands used with semctl, msgctl and shmctl 37607ca46eSDavid Howells * see also specific commands in sem.h, msg.h and shm.h 38607ca46eSDavid Howells */ 39607ca46eSDavid Howells #define IPC_RMID 0 /* remove resource */ 40607ca46eSDavid Howells #define IPC_SET 1 /* set ipc_perm options */ 41607ca46eSDavid Howells #define IPC_STAT 2 /* get ipc_perm options */ 42607ca46eSDavid Howells #define IPC_INFO 3 /* see ipcs */ 43607ca46eSDavid Howells 44607ca46eSDavid Howells /* 45607ca46eSDavid Howells * Version flags for semctl, msgctl, and shmctl commands 46607ca46eSDavid Howells * These are passed as bitflags or-ed with the actual command 47607ca46eSDavid Howells */ 48607ca46eSDavid Howells #define IPC_OLD 0 /* Old version (no 32-bit UID support on many 49607ca46eSDavid Howells architectures) */ 50607ca46eSDavid Howells #define IPC_64 0x0100 /* New version (support 32-bit UIDs, bigger 51607ca46eSDavid Howells message sizes, etc. */ 52607ca46eSDavid Howells 53607ca46eSDavid Howells /* 54607ca46eSDavid Howells * These are used to wrap system calls. 55607ca46eSDavid Howells * 56607ca46eSDavid Howells * See architecture code for ugly details.. 57607ca46eSDavid Howells */ 58607ca46eSDavid Howells struct ipc_kludge { 59607ca46eSDavid Howells struct msgbuf __user *msgp; 60607ca46eSDavid Howells long msgtyp; 61607ca46eSDavid Howells }; 62607ca46eSDavid Howells 63607ca46eSDavid Howells #define SEMOP 1 64607ca46eSDavid Howells #define SEMGET 2 65607ca46eSDavid Howells #define SEMCTL 3 66607ca46eSDavid Howells #define SEMTIMEDOP 4 67607ca46eSDavid Howells #define MSGSND 11 68607ca46eSDavid Howells #define MSGRCV 12 69607ca46eSDavid Howells #define MSGGET 13 70607ca46eSDavid Howells #define MSGCTL 14 71607ca46eSDavid Howells #define SHMAT 21 72607ca46eSDavid Howells #define SHMDT 22 73607ca46eSDavid Howells #define SHMGET 23 74607ca46eSDavid Howells #define SHMCTL 24 75607ca46eSDavid Howells 76607ca46eSDavid Howells /* Used by the DIPC package, try and avoid reusing it */ 77607ca46eSDavid Howells #define DIPC 25 78607ca46eSDavid Howells 79607ca46eSDavid Howells #define IPCCALL(version,op) ((version)<<16 | (op)) 80607ca46eSDavid Howells 81607ca46eSDavid Howells 82607ca46eSDavid Howells #endif /* _UAPI_LINUX_IPC_H */ 83