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-.\" Copyright (C) 2002, Michael Kerrisk
-.\"
-.\" SPDX-License-Identifier: Linux-man-pages-copyleft
-.\"
-.\" Modified 31 Jan 2002, Michael Kerrisk <mtk.manpages@gmail.com>
-.\" Added description of mmap2
-.\" Modified, 2004-11-25, mtk -- removed stray #endif in prototype
-.\"
-.TH mmap2 2 (date) "Linux man-pages (unreleased)"
-.SH NAME
-mmap2 \- map files or devices into memory
-.SH LIBRARY
-Standard C library
-.RI ( libc ", " \-lc )
-.SH SYNOPSIS
-.nf
-.BR "#include <sys/mman.h>" " /* Definition of " MAP_* " and " PROT_* " constants */"
-.BR "#include <sys/syscall.h>" " /* Definition of " SYS_* " constants */"
-.B #include <unistd.h>
-.P
-.BI "void *syscall(SYS_mmap2, unsigned long " addr ", unsigned long " length ,
-.BI " unsigned long " prot ", unsigned long " flags ,
-.BI " unsigned long " fd ", unsigned long " pgoffset );
-.fi
-.SH DESCRIPTION
-This is probably not the system call that you are interested in; instead, see
-.BR mmap (2),
-which describes the glibc wrapper function that invokes this system call.
-.P
-The
-.BR mmap2 ()
-system call provides the same interface as
-.BR mmap (2),
-except that the final argument specifies the offset into the
-file in 4096-byte units (instead of bytes, as is done by
-.BR mmap (2)).
-This enables applications that use a 32-bit
-.I off_t
-to map large files (up to 2\[ha]44 bytes).
-.SH RETURN VALUE
-On success,
-.BR mmap2 ()
-returns a pointer to the mapped area.
-On error, \-1 is returned and
-.I errno
-is set to indicate the error.
-.SH ERRORS
-.TP
-.B EFAULT
-Problem with getting the data from user space.
-.TP
-.B EINVAL
-(Various platforms where the page size is not 4096 bytes.)
-.I "offset\ *\ 4096"
-is not a multiple of the system page size.
-.P
-.BR mmap2 ()
-can also return any of the errors described in
-.BR mmap (2).
-.SH VERSIONS
-On architectures where this system call is present,
-the glibc
-.BR mmap ()
-wrapper function invokes this system call rather than the
-.BR mmap (2)
-system call.
-.P
-This system call does not exist on x86-64.
-.P
-On ia64, the unit for
-.I offset
-is actually the system page size, rather than 4096 bytes.
-.\" ia64 can have page sizes ranging from 4 kB to 64 kB.
-.\" On cris, it looks like the unit might also be the page size,
-.\" which is 8192 bytes. -- mtk, June 2007
-.SH STANDARDS
-Linux.
-.SH HISTORY
-Linux 2.3.31.
-.SH SEE ALSO
-.BR getpagesize (2),
-.BR mmap (2),
-.BR mremap (2),
-.BR msync (2),
-.BR shm_open (3)