Description of problem:
Making a bootable usb drive with grub-install is stopped with current targeted
policy.

Version-Release number of selected component (if applicable):
selinux-policy-targeted-2.6.1-1.fc7

How reproducible:
always

Steps to Reproduce:
1. plug in a usb drive, say /dev/sdc, that gets mounted to /media/disk
2. grub-install --root-directory=/media/disk /dev/sdc

  
Actual results:
avc: denied { write } for comm="grub" dev=dm-0 egid=0 euid=0 exe="/sbin/grub"
exit=0 fsgid=0 fsuid=0 gid=0 items=0 name="grub-install.log.R22033"
path="/tmp/grub-install.log.R22033" pid=22036
scontext=user_u:system_r:bootloader_t:s0 sgid=0
subj=user_u:system_r:bootloader_t:s0 suid=0 tclass=file
tcontext=user_u:object_r:tmp_t:s0 tty=pts1 uid=0 

avc: denied { search } for comm="grub" dev=dm-0 egid=0 euid=0 exe="/sbin/grub"
exit=-2 fsgid=0 fsuid=0 gid=0 items=0 name="media" pid=22082
scontext=user_u:system_r:bootloader_t:s0 sgid=0
subj=user_u:system_r:bootloader_t:s0 suid=0 tclass=dir
tcontext=system_u:object_r:mnt_t:s0 tty=pts1 uid=0 

Expected results:
grub-install to succeed.

Additional info: