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/* /usr/include/sys/mman.h */
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extern void *mmap(void *addr, size_t len, int prot,
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int flags, int fd, __off_t offset);
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extern void *mmap64(void *addr, size_t len, int prot,
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int flags, int fd, long offset);
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extern int munmap(void *addr, size_t len);
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extern int mprotect(void *addr, size_t len, int prot);
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extern int msync(void *addr, size_t len, int flags);
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extern int posix_madvise(void *addr, size_t len, int advice);
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extern int mlock(void *addr, size_t len);
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extern int munlock(void *addr, size_t len);
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extern int mlockall(int flags);
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extern int munlockall(void);
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extern int mincore(void *start, size_t len, u_char *vec);
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extern void *mremap(void *addr, size_t old_len, size_t new_len,
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int flags);
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extern int remap_file_pages(void *start, size_t size, int prot,
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size_t pgoff, int flags);
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extern int shm_open(char *name, int oflag, mode_t mode);
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extern int shm_unlink(char *name);
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