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| author | Corey Bryant <coreyb@linux.vnet.ibm.com> | 2012-01-26 09:42:26 -0500 |
|---|---|---|
| committer | Anthony Liguori <aliguori@us.ibm.com> | 2012-02-01 16:24:39 -0600 |
| commit | 47e98658f58b8afd319851f44edcb81f2d2d3774 (patch) | |
| tree | f40e9ae17206142321353526f2b84d8579406ba3 /net.c | |
| parent | bdef79a2994d6f0383e07e9597675711662b3031 (diff) | |
| download | qemu-47e98658f58b8afd319851f44edcb81f2d2d3774.zip qemu-47e98658f58b8afd319851f44edcb81f2d2d3774.tar.gz qemu-47e98658f58b8afd319851f44edcb81f2d2d3774.tar.bz2 | |
Add cap reduction support to enable use as SUID
The ideal way to use qemu-bridge-helper is to give it an fscap of using:
setcap cap_net_admin=ep qemu-bridge-helper
Unfortunately, most distros still do not have a mechanism to package files
with fscaps applied. This means they'll have to SUID the qemu-bridge-helper
binary.
To improve security, use libcap to reduce our capability set to just
cap_net_admin, then reduce privileges down to the calling user. This is
hopefully close to equivalent to fscap support from a security perspective.
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Signed-off-by: Richa Marwaha <rmarwah@linux.vnet.ibm.com>
Signed-off-by: Corey Bryant <coreyb@linux.vnet.ibm.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Diffstat (limited to 'net.c')
0 files changed, 0 insertions, 0 deletions