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Compatibility with ubase #5

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@a-schaefers a-schaefers commented Jan 8, 2020

Here is what I had to do to make ubase compatible busybox. If we are interested in being able to swap ubase/sbase/etc. for busybox some day, this is how I did in our init scripts.

Note: I'm not saying ubase is the be all end all or that is should have the last say about anything.

Not sure if this should be merged or not. But init works for me when using these changes.

@@ -117,7 +117,7 @@ main() {
}

log "Mounting all local filesystems..."; {
mount -at nosysfs,nonfs,nonfs4,nosmbfs,nocifs -O no_netdev ||
mount -a ||
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This should be fine. 👍

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The message above should be changed to Mounting all filesystems... as the removal of these flags will cause mount to attempt to mount network partitions. I've never actually seen this use-case so we should be fine here.

@@ -16,20 +16,18 @@ main() {
dd count=1 bs=512 if=/dev/random of=/var/random.seed
}

halt -w
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halt tells the system to cease all CPU activity though I'm unsure if it is needed as we send TERM regardless. I'm also fine with this change.

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ubase halt only has -p and -r switches

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This is fine to remove regardless as we only used halt to write the wtmp record.

-> halt --help
BusyBox v1.31.1 (2019-10-25 20:52:45 EEST) multi-call binary.

Usage: halt [-d DELAY] [-n] [-f] [-w]

Halt the system

        -d SEC  Delay interval
        -n      Do not sync
        -f      Force (don't go through init)
        -w      Only write a wtmp record

We really "halt" the machine ourselves below.

}

log "Unmounting filesystems and disabling swap..."; {
swapoff -a
umount -rat nosysfs,noproc,nodevtmpfs,notmpfs
umount -a
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This is fine.

Comment on lines 20 to 25
killall5 TERM
sleep 1
}

log "Sending KILL signal to all processes..."; {
killall5 -KILL
killall5 KILL
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Does killall5 work without - in busybox as well. Might need to investigate here.

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@a-schaefers a-schaefers Jan 8, 2020

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I'm not sure. I'm a little busy atm.

@dylanaraps dylanaraps closed this in e5d15a1 Jan 8, 2020
@a-schaefers a-schaefers changed the title Compatibility with ubase? Compatibility with ubase Mar 13, 2020
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