From: Stuart Henderson <stu@spacehopper.org>
Subject: Re: sysupgrade -c
To: Manuel Giraud <manuel@ledu-giraud.fr>
Cc: tech <tech@openbsd.org>
Date: Fri, 3 Jul 2026 14:11:16 +0100

On 2026/07/03 14:15, Manuel Giraud wrote:
> Stuart Henderson <stu@spacehopper.org> writes:
> 
> > On 2026/07/03 09:40, Manuel Giraud wrote:
> >> Hi,
> >> 
> >> From a discussion on misc@ some days ago, here's my attempt at
> >> supporting a "check new version" feature in sysupgrade:
> >> 
> >> Index: sysupgrade.8
> >> ===================================================================
> >> RCS file: /cvs/src/usr.sbin/sysupgrade/sysupgrade.8,v
> >> diff -u -p -r1.23 sysupgrade.8
> >> --- sysupgrade.8	11 Nov 2025 15:18:30 -0000	1.23
> >> +++ sysupgrade.8	3 Jul 2026 07:33:14 -0000
> >> @@ -22,7 +22,7 @@
> >>  .Nd upgrade system to the next release or a new snapshot
> >>  .Sh SYNOPSIS
> >>  .Nm
> >> -.Op Fl fkns
> >> +.Op Fl cfkns
> >>  .Op Fl b Ar base-directory
> >>  .Op Fl R Ar version
> >>  .Op Ar installurl | path
> >> @@ -54,6 +54,9 @@ Download files to
> >>  .Ar base-directory Ns / Ns Pa _sysupgrade
> >>  instead of
> >>  .Pa /home/_sysupgrade .
> >> +.It Fl c
> >> +Print availability of a new version.
> >> +The sets are not downloaded.
> >>  .It Fl f
> >>  For snapshots, force an already applied upgrade.
> >>  This option has no effect on releases.
> >> Index: sysupgrade.sh
> >> ===================================================================
> >> RCS file: /cvs/src/usr.sbin/sysupgrade/sysupgrade.sh,v
> >> diff -u -p -r1.62 sysupgrade.sh
> >> --- sysupgrade.sh	21 Mar 2026 01:34:25 -0000	1.62
> >> +++ sysupgrade.sh	3 Jul 2026 07:33:14 -0000
> >> @@ -74,6 +74,7 @@ rmel() {
> >>  
> >>  SNAP=false
> >>  FILE=false
> >> +CHECK=false
> >>  FORCE=false
> >>  FORCE_VERSION=false
> >>  KEEP=false
> >> @@ -83,9 +84,10 @@ WHAT='release'
> >>  VERSION=$(uname -r)
> >>  NEXT_VERSION=$(echo ${VERSION} + 0.1 | bc)
> >>  
> >> -while getopts b:fknrR:s arg; do
> >> +while getopts b:cfknrR:s arg; do
> >>  	case ${arg} in
> >>  	b)	SETSDIR=${OPTARG}/_sysupgrade;;
> >> +	c)	CHECK=true;;
> >>  	f)	FORCE=true;;
> >>  	k)	KEEP=true;;
> >>  	n)	REBOOT=false;;
> >> @@ -186,10 +188,22 @@ unpriv cksum -qC SHA256 BUILDINFO
> >>  if [[ -e /var/db/installed.BUILDINFO ]]; then
> >>  	installed_build_ts=$(cut -f3 -d' ' /var/db/installed.BUILDINFO)
> >>  	build_ts=$(cut -f3 -d' ' BUILDINFO)
> >> -	if (( $build_ts <= $installed_build_ts )) && ! $FORCE; then
> >> +	if $CHECK; then
> >> +	    build_human_ts=$(cut -f5- -d' ' BUILDINFO)
> >> +	    if (( $build_ts > $installed_build_ts )); then
> >> +		echo "A new version ($build_human_ts) is available."
> >> +		exit 0
> >> +	    else
> >> +		echo "No new version available."
> >
> > I'd recommend no new version -> no output (like syspatch -c does),
> > so it can be used in cron without an extra | grep -v.
> 
> Ok but then I think I should also tame the verbosity of ftp when using
> this flag, no?

yes.