Module Name: src
Committed By: mrg
Date: Wed Sep 13 00:34:48 UTC 2017
Modified Files:
src/share/man/man4: options.4
Log Message:
note that COMPAT_XX netbsd options enable all forward support as well.
eg, COMPAT_60 enables COMPAT_70 and higher.
document the changes in compat for 4, 5, 6, and 7.
bump date.
To generate a diff of this commit:
cvs rdiff -u -r1.470 -r1.471 src/share/man/man4/options.4
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/share/man/man4/options.4
diff -u src/share/man/man4/options.4:1.470 src/share/man/man4/options.4:1.471
--- src/share/man/man4/options.4:1.470 Sat Aug 12 08:03:57 2017
+++ src/share/man/man4/options.4 Wed Sep 13 00:34:48 2017
@@ -1,4 +1,4 @@
-.\" $NetBSD: options.4,v 1.470 2017/08/12 08:03:57 maxv Exp $
+.\" $NetBSD: options.4,v 1.471 2017/09/13 00:34:48 mrg Exp $
.\"
.\" Copyright (c) 1996
.\" Perry E. Metzger. All rights reserved.
@@ -30,7 +30,7 @@
.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
.\"
.\"
-.Dd August 12, 2017
+.Dd September 12, 2017
.Dt OPTIONS 4
.Os
.Sh NAME
@@ -173,6 +173,19 @@ Some pseudo-devices can have multiple or
instances.
.El
.Ss Compatibility Options
+Note that compatibility options for older
+.Nx
+releases includes on the support for newer releases as well.
+This means that typically only one of these is necessary, with the
+.Cd COMPAT_09
+option enabling all
+.Nx
+compatibility.
+This does not include the
+.Cd COMPAT_43
+or
+.Cd COMPAT_44
+options.
.Bl -ohang
.It Cd options COMPAT_09
Enable binary compatibility with
@@ -323,6 +336,13 @@ release.
.It Cd options COMPAT_40
Enable binary compatibility with
.Nx 4.0 .
+This allows the use of old
+.Xr ptrace 2
+calls for the SH3 platform.
+It also enables old
+.Xr mount 2
+system call that did not include the data length parameter.
+The power_event_t structure's pev_switch is filled in.
.It Cd options COMPAT_43
Enables compatibility with
.Bx 4.3 .
@@ -354,12 +374,32 @@ socket calls.
.It Cd options COMPAT_50
Enable binary compatibility with
.Nx 5.0 .
+This enables support for the old
+.Ft time_t
+and
+.Ft dev_t
+types as 32 bit, and all the associated kernel interface changes.
+It also enables old
+.Xr gpio 4
+and
+.Xr rnd 4
+interfaces.
.It Cd options COMPAT_60
Enable binary compatibility with
.Nx 6.0 .
+This provides old
+.Xr ccd 4
+interfaces, enables support for old
+.Xr cpuctl 8
+microcode interfaces, and support for the old
+.Ft ptmget
+structure.
.It Cd options COMPAT_70
Enable binary compatibility with
.Nx 7.0 .
+This provides support for old
+.Xr route 4
+interfaces.
.It Cd options COMPAT_BSDPTY
This option is currently on by default and enables the pty multiplexer
.Xr ptm 4
