[Rpm-maint] RPM NDB and chroot failure

Darren Hart dvhart at infradead.org
Tue Jul 18 17:59:03 UTC 2017

While testing my previous patches to allow for an NDB only build of RPM, I ran
across an issue using the --root argument.

When passing --root, the strace log shows that after the chroot call, a stat()
of the Packages.db absolute path fails, which triggers a reopen, which fails as
it attempts open() using the absolute path.

This manifests in lib/backend/ndb/rpmpkg.c:

				open(pkgdb->filename, ...)

The pkgdb->filename is not being updated after chroot.

I'm looking into how to fix this, but I'm still a bit green on the RPM DB

Should the ndb implementation be using the rpmbd_internal API? For example,
rather than accessing pkgdb->filename directly, should the ndb implementation
have a call which provides it with the chroot adjusted path to the RPM DB?
Something using rpmdbHome() for example?

Darren Hart
VMware Open Source Technology Center

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