diff options
| author | cinap_lenrek <cinap_lenrek@felloff.net> | 2018-09-16 22:35:16 +0200 |
|---|---|---|
| committer | cinap_lenrek <cinap_lenrek@felloff.net> | 2018-09-16 22:35:16 +0200 |
| commit | 2985d53b7a06d8a1712493aa899d6ffcfacd9e3b (patch) | |
| tree | be0bd7c85483f49c2e1ca4d1a4761ebe42ef110f /sys/src/9/boot | |
| parent | 9d60ece81651aedea9136615f40cbee27e1eda97 (diff) | |
bootrc: add experimental reboot method to load another kernel
syntax: reboot!bootfile[!method...]
this echos bootfile to /dev/reboot, causing bootfile kernel
to be started.
when method is given, we first connect to the filesystem and
set bootargs so that bootfile can be loaded from the target
network or local fileserver.
note, when no bootfile is given, this causes the kernel to
reboot to bios.
Diffstat (limited to 'sys/src/9/boot')
| -rw-r--r-- | sys/src/9/boot/bootfs.proto | 1 | ||||
| -rwxr-xr-x | sys/src/9/boot/reboot.rc | 56 |
2 files changed, 57 insertions, 0 deletions
diff --git a/sys/src/9/boot/bootfs.proto b/sys/src/9/boot/bootfs.proto index a59ad6db5..1bffa0c47 100644 --- a/sys/src/9/boot/bootfs.proto +++ b/sys/src/9/boot/bootfs.proto @@ -48,6 +48,7 @@ $objtype rc lib rcmain + reboot.rc 555 sys sys ../boot/reboot.rc local.rc 555 sys sys ../boot/local.rc net.rc 555 sys sys ../boot/net.rc bin diff --git a/sys/src/9/boot/reboot.rc b/sys/src/9/boot/reboot.rc new file mode 100755 index 000000000..536ac2009 --- /dev/null +++ b/sys/src/9/boot/reboot.rc @@ -0,0 +1,56 @@ +#!/bin/rc + +fn configreboot { + if(~ $"* *!*){ + *=`{echo $* | sed 's,!, ,'} + shift + *=`{echo $* | sed 's,!, ,'} + x=m$1 + x=$$x + shift + + # config method + $x(1) $* + } +} + +fn connectreboot { + if(~ $"* *!*){ + *=`{echo $* | sed 's,!, ,'} + bootfile=$1 + shift + bootargs=$* + *=`{echo $* | sed 's,!, ,'} + x=m$1 + x=$$x + shift + + # connect method + $x(2) $* + + rfork ne + + # set new kernel parameters + echo -n $bootargs > '#ec/bootargs' + + # remove part of our temporary root + /mnt/broot/$cputype/bin/unmount /$cputype/bin /bin + /mnt/broot/$cputype/bin/unmount /rc/bin /bin + /mnt/broot/$cputype/bin/unmount / + + # create the name space, mount the root fs + /mnt/broot/$cputype/bin/bind / / + /mnt/broot/$cputype/bin/mount -ac '#s/boot' / + } + if not { + bootfile=$1 + } + + # load the new kernel + /mnt/broot/$cputype/bin/echo reboot $bootfile > /dev/reboot + exit 'reboot failed' +} + +mreboot=(configreboot connectreboot) + +mt=(mreboot $mt) |