Red Hat Bugzilla – Bug 442471
mkinitrd get_dso_deps() fails to detect missing shared library files
Last modified: 2008-06-16 23:06:10 EDT
Description of problem:
mkinitrd supports executables with shared-library dependencies, and has a
feature to detect when a shared library is not found. However, that feature is
broken due to the way ld-linux.so works. When run with "LD_TRACE_PRELINKING=1",
ld-linux.so stops with an error message instead of printing "not found" for
unresolved libraries. If a shared lib is missing, mkinitrd is designed to look
for "not found" and abort. With the current setup, it will actually proceed to
make a broken initrd.
Maybe it should be higher priority, but I am assuming that missing shared libs
are quite rare.
Version-Release number of selected component (if applicable):
Steps to Reproduce:
1. Temporarily remove a shared library needed by nash, i.e.:
2. Run initrd as usual
Error messages from ld-linux.so, but the creation of a broken initrd continues.
The following error message, and aborting the initrd creation:
There are missing files on your system. The dynamic object /sbin/nash requires
libdevmapper.so.1.02 in order to properly function. mkinitrd cannot continue.
I came across this problem trying to add some things to the initrd while testing
some badly designed disk encryption software. It uses a modified mkinitrd
script, which became broken with an OS update.
It would be nice to be able to define some additional tweaks besides just adding
modules. For example, a list of files which can be executable, and few places to
insert commands into the init script. Modifying mkinitrd is always risky, but it
should be pretty safe if the extra hooks are disabled for automatic initrd
creation. Low priority, of course.
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