1.\" $OpenBSD: mincore.2,v 1.9 2003/06/02 20:18:39 millert Exp $ 2.\" $NetBSD: mincore.2,v 1.7 1995/10/12 15:41:05 jtc Exp $ 3.\" 4.\" Copyright (c) 1991, 1993 5.\" The Regents of the University of California. All rights reserved. 6.\" 7.\" Redistribution and use in source and binary forms, with or without 8.\" modification, are permitted provided that the following conditions 9.\" are met: 10.\" 1. Redistributions of source code must retain the above copyright 11.\" notice, this list of conditions and the following disclaimer. 12.\" 2. Redistributions in binary form must reproduce the above copyright 13.\" notice, this list of conditions and the following disclaimer in the 14.\" documentation and/or other materials provided with the distribution. 15.\" 3. Neither the name of the University nor the names of its contributors 16.\" may be used to endorse or promote products derived from this software 17.\" without specific prior written permission. 18.\" 19.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29.\" SUCH DAMAGE. 30.\" 31.\" @(#)mincore.2 8.1 (Berkeley) 6/9/93 32.\" 33.Dd June 9, 1993 34.Dt MINCORE 2 35.Os 36.Sh NAME 37.Nm mincore 38.Nd determine residency of memory pages 39.Sh SYNOPSIS 40.Fd #include <sys/types.h> 41.Fd #include <sys/mman.h> 42.Ft int 43.Fn mincore "void *addr" "size_t len" "char *vec" 44.Sh DESCRIPTION 45The 46.Fn mincore 47system call 48allows a process to obtain information about whether pages are 49core resident. 50Here the current core residency of the pages is returned 51in the character array 52.Fa vec , 53with a value of 1 meaning that the page is in-core. 54.Sh RETURN VALUES 55Upon successful completion, 56a value of 0 is returned. 57Otherwise, a value of \-1 is returned and 58.Va errno 59is set to indicate the error. 60.Sh SEE ALSO 61.Xr madvise 2 , 62.Xr minherit 2 , 63.Xr mlock 2 , 64.Xr mprotect 2 , 65.Xr msync 2 , 66.Xr munmap 2 67.Sh HISTORY 68The 69.Fn mincore 70function first appeared in 71.Bx 4.4 . 72