sync with OpenBSD -current
This commit is contained in:
parent
cc6742f14d
commit
f913a3fe74
59 changed files with 478 additions and 318 deletions
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@ -1,4 +1,4 @@
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/* $OpenBSD: init.c,v 1.21 2024/01/19 14:15:51 deraadt Exp $ */
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/* $OpenBSD: init.c,v 1.22 2024/01/21 17:18:13 kettenis Exp $ */
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/*
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* Copyright (c) 2014,2015 Philip Guenther <guenther@openbsd.org>
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*
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@ -129,7 +129,6 @@ _libc_preinit(int argc, char **argv, char **envp, dl_cb_cb *cb)
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* Static non-PIE processes don't get an AUX vector,
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* so find the phdrs through the ELF header
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*/
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_static_phdr_info.dlpi_addr = (Elf_Addr)__executable_start;
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phdr = (void *)((char *)__executable_start +
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__executable_start->e_phoff);
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phnum = __executable_start->e_phnum;
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@ -1,4 +1,4 @@
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.\" $OpenBSD: madvise.2,v 1.22 2019/12/26 01:01:06 jsg Exp $
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.\" $OpenBSD: madvise.2,v 1.23 2024/01/21 17:46:03 deraadt Exp $
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.\" $NetBSD: madvise.2,v 1.7 1995/12/27 21:17:02 jtc Exp $
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.\"
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.\" Copyright (c) 1991, 1993
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@ -30,7 +30,7 @@
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.\"
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.\" @(#)madvise.2 8.1 (Berkeley) 6/9/93
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.\"
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.Dd $Mdocdate: December 26 2019 $
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.Dd $Mdocdate: January 21 2024 $
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.Dt MADVISE 2
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.Os
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.Sh NAME
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@ -88,7 +88,31 @@ If successful, the
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.Fn posix_madvise
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function will return zero.
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Otherwise an error number will be returned to indicate the error.
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.Sh ERRORS
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.Fn madvise
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will fail if:
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.Bl -tag -width Er
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.It Bq Er EINVAL
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The specified
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.Fa behav
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argument was invalid.
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.It Bq Er EINVAL
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The
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.Fa addr
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parameter was not page aligned or
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.Fa addr
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and
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.Fa size
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specify a region that would extend beyond the end of the address space.
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.It Bq Er EPERM
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The
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.Fa addr
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and
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.Fa len
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parameters specify a region which contains at least one page marked immutable.
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.El
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.Sh SEE ALSO
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.Xr mimmutable 2 ,
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.Xr minherit 2 ,
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.Xr mprotect 2 ,
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.Xr msync 2 ,
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@ -98,6 +122,10 @@ The
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.Fn posix_madvise
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system call conforms to
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.St -p1003.1-2008 .
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.Pp
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The
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.Er EPERM
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failure conditions described are an extension to this specification.
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.Sh HISTORY
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The
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.Fn madvise
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@ -1,4 +1,4 @@
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.\" $OpenBSD: mimmutable.2,v 1.4 2024/01/20 13:19:37 deraadt Exp $
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.\" $OpenBSD: mimmutable.2,v 1.5 2024/01/21 17:46:03 deraadt Exp $
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.\"
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.\" Copyright (c) 1991, 1993
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.\" The Regents of the University of California. All rights reserved.
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@ -29,7 +29,7 @@
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.\"
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.\" @(#)mimmutable.2 8.1 (Berkeley) 6/9/93
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.\"
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.Dd $Mdocdate: January 20 2024 $
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.Dd $Mdocdate: January 21 2024 $
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.Dt MIMMUTABLE 2
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.Os
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.Sh NAME
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system call
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changes currently mapped pages in the region to be marked immutable,
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which means their protection or mapping may not be changed in the future.
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Most requests to
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.Xr madvise 2 ,
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.Xr minherit 2 ,
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.Xr mmap 2 ,
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.Xr mprotect 2 ,
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and
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.Xr msync 2 , and
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.Xr munmap 2
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to pages marked immutable will return with error
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.Er EPERM .
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and
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.Fa len
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arguments is not valid.
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.It Bq Er EPERM
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At least one page has inheritance of
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.Dv MAP_INHERIT_ZERO .
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.El
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.Sh SEE ALSO
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.Xr minherit 2 ,
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.Xr mmap 2 ,
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.Xr mprotect 2 ,
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.Xr munmap 2
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@ -1,4 +1,4 @@
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.\" $OpenBSD: minherit.2,v 1.16 2019/01/11 18:46:30 deraadt Exp $
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.\" $OpenBSD: minherit.2,v 1.17 2024/01/21 17:46:03 deraadt Exp $
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.\"
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.\" Copyright (c) 1991, 1993
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.\" The Regents of the University of California. All rights reserved.
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.\"
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.\" @(#)minherit.2 8.1 (Berkeley) 6/9/93
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.\"
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.Dd $Mdocdate: January 11 2019 $
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.Dd $Mdocdate: January 21 2024 $
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.Dt MINHERIT 2
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.Os
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.Sh NAME
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.Fn minherit
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system call will fail if:
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.Bl -tag -width Er
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.It Bq Er EPERM
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The
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.Fa addr
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and
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.Fa len
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parameters specify a region that contains
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at least one page which is immutable, or
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.Dv MAP_INHERIT_ZERO
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is being requested on a page without
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.Dv PROT_WRITE
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permission.
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.It Bq Er EINVAL
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The virtual address range specified by the
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.Fa addr
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.El
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.Sh SEE ALSO
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.Xr madvise 2 ,
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.Xr mimmutable 2 ,
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.Xr mprotect 2 ,
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.Xr msync 2 ,
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.Xr munmap 2
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@ -1,4 +1,4 @@
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.\" $OpenBSD: mprotect.2,v 1.27 2022/10/07 15:21:04 deraadt Exp $
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.\" $OpenBSD: mprotect.2,v 1.28 2024/01/21 17:00:42 deraadt Exp $
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.\" $NetBSD: mprotect.2,v 1.6 1995/10/12 15:41:08 jtc Exp $
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.\"
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.\" Copyright (c) 1991, 1993
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@ -30,7 +30,7 @@
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.\"
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.\" @(#)mprotect.2 8.1 (Berkeley) 6/9/93
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.\"
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.Dd $Mdocdate: October 7 2022 $
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.Dd $Mdocdate: January 21 2024 $
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.Dt MPROTECT 2
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.Os
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.Sh NAME
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@ -121,6 +121,7 @@ specify a region which contains at least one page marked immutable.
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.El
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.Sh SEE ALSO
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.Xr madvise 2 ,
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.Xr mimmutable 2 ,
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.Xr msync 2 ,
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.Xr munmap 2
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.Sh STANDARDS
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@ -1,4 +1,4 @@
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.\" $OpenBSD: msync.2,v 1.29 2021/06/30 18:46:49 schwarze Exp $
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.\" $OpenBSD: msync.2,v 1.30 2024/01/21 17:46:03 deraadt Exp $
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.\" $NetBSD: msync.2,v 1.8 1995/10/12 15:41:09 jtc Exp $
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.\"
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.\" Copyright (c) 1991, 1993
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.\"
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.\" @(#)msync.2 8.1 (Berkeley) 6/9/93
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.\"
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.Dd $Mdocdate: June 30 2021 $
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.Dd $Mdocdate: January 21 2024 $
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.Dt MSYNC 2
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.Os
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.Sh NAME
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and
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.Fa size
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specify a region that would extend beyond the end of the address space.
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.It Bq Er EPERM
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The
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.Fa addr
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and
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.Fa len
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parameters specify a region which contains at least one page marked immutable.
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.It Bq Er ENOMEM
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Addresses in the specified region are outside the range allowed
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for the address space of the process, or specify one or more pages
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.El
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.Sh SEE ALSO
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.Xr madvise 2 ,
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.Xr mimmutable 2 ,
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.Xr minherit 2 ,
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.Xr mprotect 2 ,
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.Xr munmap 2
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@ -1,4 +1,4 @@
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.\" $OpenBSD: munmap.2,v 1.20 2022/10/07 15:21:04 deraadt Exp $
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.\" $OpenBSD: munmap.2,v 1.21 2024/01/21 17:00:42 deraadt Exp $
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.\" $NetBSD: munmap.2,v 1.5 1995/02/27 12:35:03 cgd Exp $
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.\"
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.\" Copyright (c) 1991, 1993
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@ -30,7 +30,7 @@
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.\"
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.\" @(#)munmap.2 8.2 (Berkeley) 4/15/94
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.\"
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.Dd $Mdocdate: October 7 2022 $
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.Dd $Mdocdate: January 21 2024 $
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.Dt MUNMAP 2
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.Os
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.Sh NAME
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.El
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.Sh SEE ALSO
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.Xr madvise 2 ,
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.Xr mimmutable 2 ,
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.Xr mlock 2 ,
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.Xr mlockall 2 ,
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.Xr mmap 2 ,
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