Bug 59382

Description of Problem:
Scripts invoked by rpm appear to inherit various file descriptors used by rpm
internally (including the file of a package being installed).

Example: OpenSSH 3.0.2p2's sshd started from %post after upgrade:

[root@kunhuta i386]# /sbin/service sshd status
sshd (pid 9106) is running...
[root@kunhuta i386]# ls -l /proc/9106/fd/
total 0
lrwx------    1 root     root           64 Feb  6 19:17 0 -> /dev/null
lrwx------    1 root     root           64 Feb  6 19:17 1 -> /dev/null
lr-x------    1 root     root           64 Feb  6 19:17 11 ->
/home/sw/rh/RPMS/i386/openssh-server-3.0.2p1-1loc62.i386.rpm
lrwx------    1 root     root           64 Feb  6 19:17 12 -> /dev/pts/1
lrwx------    1 root     root           64 Feb  6 19:17 2 -> /dev/null
l-wx------    1 root     root           64 Feb  6 19:17 21 -> /dev/null
lrwx------    1 root     root           64 Feb  6 19:17 3 -> socket:[520909]
lr-x------    1 root     root           64 Feb  6 19:17 7 -> pipe:[520908]
l-wx------    1 root     root           64 Feb  6 19:17 8 -> pipe:[520908]

Fds 11 and 12 should not be there. Well, they wouldn't be there if sshd did the
right thing (or the wrong thing according to the wise men of OpenBSD) and closed
all its unused fds upon startup but you get the point.

Version-Release number of selected component (if applicable):
rpm-4.0.2-6x

How Reproducible:
Easily.

Steps to Reproduce:
1. cat <<EOF >test.spec
Summary: The test package
Name: test
Version: 1
Release: 1
Group: Test
License: public domain
Packager: peak
%description
This is a test.
%prep
%build
%install
%post
ls -l /proc/$$/fd
%files
EOF
2. rpmbuild test.spec
3. rpm -i test-1-1.i386.rpm

Actual Results:
total 0
lr-x------    1 root     root           64 Feb  6 19:37 0 -> pipe:[521125]
lrwx------    1 root     root           64 Feb  6 19:37 1 -> /dev/pts/1
lr-x------    1 root     root           64 Feb  6 19:37 11 ->
/home/sw/rh/RPMS/i386/test-1-1.i386.rpm
lrwx------    1 root     root           64 Feb  6 19:37 12 -> /dev/pts/1
lrwx------    1 root     root           64 Feb  6 19:37 2 -> /dev/pts/1
lr-x------    1 root     root           64 Feb  6 19:37 3 -> /tmp/rpm-tmp.14470

Expected Results:
perhaps something like this...
total 0
lr-x------    1 root     root           64 Feb  6 19:37 0 -> pipe:[521125]
lrwx------    1 root     root           64 Feb  6 19:37 1 -> /dev/pts/1
lrwx------    1 root     root           64 Feb  6 19:37 2 -> /dev/pts/1
lr-x------    1 root     root           64 Feb  6 19:37 3 -> /tmp/rpm-tmp.14470

Additional Information:
N/a.