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    The following form allows you to view linux man pages.

    Command:

    mmap2

    
    
    

    SYNOPSIS

           #include <sys/mman.h>
    
           void *mmap2(void *addr, size_t length, int prot,
                        int flags, int fd, off_t pgoffset);
    
    
    

    DESCRIPTION

           This  is  probably  not  the  system  call  that you are interested in;
           instead, see mmap(2), which describes the glibc wrapper  function  that
           invokes this system call.
    
           The  mmap2() system call provides the same interface as mmap(2), except
           that the final argument specifies the offset into the file in 4096-byte
           units (instead of bytes, as is done by mmap(2)).  This enables applica-
           tions that use a 32-bit off_t to map large files (up to 2^44 bytes).
    
    
    

    RETURN VALUE

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

    ERRORS

           EFAULT Problem with getting the data from user space.
    
           EINVAL (Various platforms where the page size is not 4096 bytes.)  off-
                  set * 4096 is not a multiple of the system page size.
    
           mmap2() can also return any of the errors described in mmap(2).
    
    
    

    VERSIONS

           mmap2() is available since Linux 2.3.31.
    
    
    

    CONFORMING TO

           This system call is Linux-specific.
    
    
    

    NOTES

           On architectures where this system call is present,  the  glibc  mmap()
           wrapper  function invokes this system call rather than the mmap(2) sys-
           tem call.
    
           This system call does not exist on x86-64.
    
           On ia64, the unit for offset is actually the system page  size,  rather
           than 4096 bytes.
    
    
    

    SEE ALSO

           getpagesize(2), mmap(2), mremap(2), msync(2), shm_open(3)
    
    
    

    Linux 2014-02-25 MMAP2(2)

    
    
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