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switch ShellLauncher to use getAbsolutePath #4821

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@zendes zendes commented Oct 18, 2017

I ran into some issues with using JRuby on a system that uses busybox as it's userland, and without this patch things won't work.

For a bit of background: busybox's goal is to be a tiny userland (commands like ls and mv) for space-constrained devices. One of the ways it does this is by being a multi-call binary. You symlink it with names such as ls and cp, and it uses $0 to determine how it's called and thus what it should do. JRuby resolves the symlink before it execs, so busybox loses $0 and thus doesn't know what the user originally called. This patch fixes that.

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@zendes zendes commented Oct 20, 2017

looks like the CI build failed in a bunch of places that are unrelated to my change, and it was also failing to build before my change. what do you need from me to look at this?

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@ghost ghost commented Oct 23, 2017


I don't use busybox, but we do this same exact fix for a symlinking problem at my company.

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@kares kares commented Oct 23, 2017

sounds like, this makes sense - maybe even to get into

@kares kares added this to the JRuby milestone Oct 23, 2017
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@headius headius commented Oct 30, 2017

I'll merge this to 9.1.14 and master. Thanks for the help @zendes!

@headius headius closed this Oct 30, 2017
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