projects / fio.git / blame
| Commit | Line | Data |
|---|---|---|
| 35922a21 BC |
1 | #ifndef SYS_SHM_H |
| 2 | #define SYS_SHM_H | |
| 3 | ||
| 4 | #define IPC_RMID 0x1 | |
| 5 | #define IPC_CREAT 0x2 | |
| 6 | #define IPC_PRIVATE 0x4 | |
| 7 | ||
| 8 | typedef int uid_t; | |
| 9 | typedef int gid_t; | |
| 10 | ||
| 11 | typedef int shmatt_t; | |
| 12 | typedef int key_t; | |
| 13 | ||
| 14 | struct ipc_perm | |
| 15 | { | |
| 16 | uid_t uid; /* owner's user ID */ | |
| 17 | gid_t gid; /* owner's group ID */ | |
| 18 | uid_t cuid; /* creator's user ID */ | |
| 19 | gid_t cgid; /* creator's group ID */ | |
| 20 | mode_t mode; /* read/write permission */ | |
| 21 | }; | |
| 22 | ||
| 23 | ||
| 24 | struct shmid_ds | |
| 25 | { | |
| 26 | struct ipc_perm shm_perm; /* operation permission structure */ | |
| 27 | size_t shm_segsz; /* size of segment in bytes */ | |
| 28 | pid_t shm_lpid; /* process ID of last shared memory operation */ | |
| 29 | pid_t shm_cpid; /* process ID of creator */ | |
| 30 | shmatt_t shm_nattch; /* number of current attaches */ | |
| 31 | time_t shm_atime; /* time of last shmat() */ | |
| 32 | time_t shm_dtime; /* time of last shmdt() */ | |
| 33 | time_t shm_ctime; /* time of last change by shmctl() */ | |
| 34 | }; | |
| 35 | ||
| 36 | int shmctl(int shmid, int cmd, struct shmid_ds *buf); | |
| 37 | int shmget(key_t key, size_t size, int shmflg); | |
| 38 | void *shmat(int shmid, const void *shmaddr, int shmflg); | |
| 39 | int shmdt(const void *shmaddr); | |
| 40 | ||
| 41 | #endif /* SYS_SHM_H */ |