[Rpm-maint] [rpm-software-management/rpm] wrong chroot/fchdir order to break out of chroot? (Issue #1884)

[Michael Schroeder]

It's supposed to work like this:

before rpmChrootIn:
root: /
cwd: /home/user

after rpmChrootIn:
root: /rootdir
cwd: /    (i.e. outside of the /rootdir chroot jail!)

Thus, rpm dies a chroot(.) to restore the original root and a fchdir() to restore the original working directory.

One might argue that rpm should not assume that the cwd is unchanged and that it would be better to also open a fd that points to the original root. 




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