5 #define IPC_CREAT 0x2
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6 #define IPC_PRIVATE 0x4
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11 typedef int shmatt_t;
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16 uid_t uid; /* owner's user ID */
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17 gid_t gid; /* owner's group ID */
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18 uid_t cuid; /* creator's user ID */
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19 gid_t cgid; /* creator's group ID */
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20 mode_t mode; /* read/write permission */
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26 struct ipc_perm shm_perm; /* operation permission structure */
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27 size_t shm_segsz; /* size of segment in bytes */
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28 pid_t shm_lpid; /* process ID of last shared memory operation */
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29 pid_t shm_cpid; /* process ID of creator */
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30 shmatt_t shm_nattch; /* number of current attaches */
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31 time_t shm_atime; /* time of last shmat() */
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32 time_t shm_dtime; /* time of last shmdt() */
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33 time_t shm_ctime; /* time of last change by shmctl() */
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36 int shmctl(int shmid, int cmd, struct shmid_ds *buf);
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37 int shmget(key_t key, size_t size, int shmflg);
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38 void *shmat(int shmid, const void *shmaddr, int shmflg);
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39 int shmdt(const void *shmaddr);
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41 #endif /* SYS_SHM_H */
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