On Fri, 2019-02-08 at 16:55 +0000, André Draszik wrote: > On Fri, 2019-02-08 at 14:07 +0000, Richard Purdie wrote: > > On Fri, 2019-02-08 at 12:02 +0000, André Draszik wrote: > > > From: André Draszik <[email protected]> > > > > > > Busybox' getty has code to try to make itself a session leader, > > > whereas util-linux' agetty doesn't. It expects this to happen > > > from outside. > > > When getty is not a session leader, many things don't work on > > > the serial console, e.g. setting the terminal process group, > > > job control doesn't work, etc. > > > > > > Executing image tests also fails with AssertionErrors, because > > > Feb 5 16:12:55 qemuarm getty[590]: /dev/ttyAMA1: cannot get > > > controlling tty: Operation not permitted > > > Feb 5 16:12:55 qemuarm getty[590]: /dev/ttyAMA1: cannot set > > > process group: Inappropriate ioctl for device > > > > > > Update the start_getty script to invoke getty via the setsid > > > utility if needed, i.e. if /sbin/getty is not busybox getty. > > > > > > [YOCTO #13058] > > > > > > Signed-off-by: André Draszik <[email protected]> > > > --- > > > meta/recipes-core/sysvinit/sysvinit-inittab/start_getty | 9 > > > ++++++++- > > > meta/recipes-core/sysvinit/sysvinit-inittab_2.88dsf.bb | 1 + > > > 2 files changed, 9 insertions(+), 1 deletion(-) > > > > > > diff --git a/meta/recipes-core/sysvinit/sysvinit- > > > inittab/start_getty > > > b/meta/recipes-core/sysvinit/sysvinit-inittab/start_getty > > > index e15ae35f90..ae613f1e54 100644 > > > --- a/meta/recipes-core/sysvinit/sysvinit-inittab/start_getty > > > +++ b/meta/recipes-core/sysvinit/sysvinit-inittab/start_getty > > > @@ -13,6 +13,13 @@ active_serial=$(grep "serial" > > > /proc/tty/drivers | > > > cut -d/ -f1 | sed "s/ *$//") > > > # Rephrase input parameter from ttyS target index (ttyS1, ttyS2, > > > ttyAMA0, etc). > > > runtime_tty=$(echo $2 | grep -oh '[0-9]') > > > > > > +# busybox' getty does this itself, util-linux' getty needs extra > > > help > > > +getty="/sbin/getty" > > > +if ! basename $(readlink -f "${getty}") | grep -q busybox \ > > > + && [ -x "/usr/bin/setsid" ] ; then > > > + getty="/usr/bin/setsid ${getty}" > > > +fi > > > > The reason I'm reluctant to take changes like this is you just > > added 3 > > fork calls above. This does have a significant effect on boot time > > on > > slower devices. > > > > Is there a way we can do a shell string comparison rather than > > using > > grep? case statement maybe? > > I've sent a v2. > > Are you aware that there are at least 9 forks in this file for > something as > simple as forking a getty?
I'm not familiar with this file in particular. I know we removed a lot from general startup but a lot has crept in since then :( Cheers, Richard -- _______________________________________________ Openembedded-core mailing list [email protected] http://lists.openembedded.org/mailman/listinfo/openembedded-core
