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Description of problem:

rpmlib tries to read /proc/self/auxv when using most of its functions and gives out a

| warning: Failed to read auxiliary vector, /proc not mounted?

message on failures.  Unfortunately, this is triggered in use cases like

----
#include <unistd.h>
#include <rpm/rpmlib.h>

int main(void)
{
	setreuid(99, 99);
	rpmReadConfigFiles(NULL, NULL);
}
----
| open("/proc/self/auxv", O_RDONLY)       = -1 EACCES (Permission denied)
----

because 'auxv' is inaccessible for group + world and its ownership is not changed by the 'setreuid()' call.


This happens e.g. in kojihub servers which are run within apache httpd server which drops perms and loads rpmlib then.



Version-Release number of selected component (if applicable):

rpm-4.11.1-18.el7_0.x86_64


How reproducible:

100%

The same behaviour can be observed by using spacewalk 2.3 (nightly) and spacewalk-proxy 2.3 (nightly) on RHEL 7.x.
Apache error logs are spammed with the message "warning: Failed to read auxiliary vector, /proc not mounted?"

LLNL is also experiencing this bug. They are fine with having this BZ open. Adding them to the cc list for tracking purposes.

*** This bug has been marked as a duplicate of bug 1119068 ***

This has been marked as duplicate of a bug that is private.