mmap2 − map files or devices into memory

#include <sys/mman.h>
#include <syscall.h>

_syscall6(void *, start, size_t, length, int, prot, int, flags, int, fd, off_t, pgoffset);

void * mmap2(void *start, size_t length, int prot, int flags, int fd, off_t pgoffset);

#endif

The function mmap2 operates in exactly the same way as mmap(2), except that the final argument specifies the offset into the file in units of the system page size (instead of bytes). This enables applications that use a 32-bit off_t to map larger files (typically up to 2^44 bytes).

On success, mmap2 returns a pointer to the mapped area. On error -1 is returned and errno is set appropriately.

EFAULT

NOTES

SEE ALSO

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