x/build: unify gomote push and gomote ssh users

[randall77]

When I "gomote push" to a gomote host, it writes all of the files and directories it copies over as user "root".
When I "gomote ssh", it logs me in as "gopher". At that point, I don't have permissions to modify any of the files or directories, so things like all.bash don't work when it tries to write anything.

$ ./all.bash
Building Go cmd/dist using /tmp/workdir/go1.4.
go install _/tmp/workdir/go/src/cmd/dist: open cmd/dist/dist: permission denied

At least, this is true on openbsd-amd64.

It would also be nice to set GOROOT_BOOTSTRAP to /tmp/workdir/go1.4 when ssh-ing in.
But only if it was already gomote pushed?

@bradfitz

[bradfitz]

Thanks for the bug report. I'll try to make this easier and more painless.

Or at least I'll make its intro banner tell you what to do, if it can't do it itself.

For OpenBSD, IIRC, you can run "su" to use password "root" to get root. Then cd to $WORKDIR which it tells you. Probably /tmp/workdir.

[randall77]

Yeah, I worked around it by doing cp -r /tmp/workdir /tmp/workdir2 and using workdir2 instead.

[randall77]

su root with password root does work.

[bradfitz]

/cc @dmitshur