diff options
| -rw-r--r-- | lib/libc/sys/munmap.2 | 25 |
1 files changed, 21 insertions, 4 deletions
diff --git a/lib/libc/sys/munmap.2 b/lib/libc/sys/munmap.2 index 5b947026ce3..a1eac7a1ed4 100644 --- a/lib/libc/sys/munmap.2 +++ b/lib/libc/sys/munmap.2 @@ -1,4 +1,4 @@ -.\" $OpenBSD: munmap.2,v 1.16 2014/07/02 22:22:35 matthew Exp $ +.\" $OpenBSD: munmap.2,v 1.17 2016/04/09 04:04:09 guenther Exp $ .\" $NetBSD: munmap.2,v 1.5 1995/02/27 12:35:03 cgd Exp $ .\" .\" Copyright (c) 1991, 1993 @@ -30,7 +30,7 @@ .\" .\" @(#)munmap.2 8.2 (Berkeley) 4/15/94 .\" -.Dd $Mdocdate: July 2 2014 $ +.Dd $Mdocdate: April 9 2016 $ .Dt MUNMAP 2 .Os .Sh NAME @@ -56,10 +56,9 @@ will fail if: .It Bq Er EINVAL The .Fa addr -parameter was not page aligned, -.Fa addr and .Fa len +parameters specify a region that would extend beyond the end of the address space, or some part of the region being unmapped is not part of the currently valid address space. @@ -73,8 +72,26 @@ valid address space. .Xr mprotect 2 , .Xr msync 2 , .Xr getpagesize 3 +.Sh STANDARDS +When +.Fa len +is non-zero, the +.Fn munmap +function conforms to +.St -p1003.1-2008 . .Sh HISTORY The .Fn munmap system call first appeared in .Bx 4.1c . +.Sh CAVEATS +.St -p1003.1-2008 +specifies that +.Fn munmap +shall fail with +.Er EINVAL +if +.Fa len +is 0. +.Ox +performs no action in this case. |