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security: dac: also label listen UNIX sockets

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We switched to opening mode='bind' sockets ourselves:
commit 30fb2276d8
    qemu: support passing pre-opened UNIX socket listen FD
in v4.5.0-rc1~251

Then fixed qemuBuildChrChardevStr to change libvirtd's label
while creating the socket:
commit b0c6300fc4
    qemu: ensure FDs passed to QEMU for chardevs have correct SELinux labels
v4.5.0-rc1~52

Also add labeling of these sockets to the DAC driver.
Instead of duplicating the logic which decides whether libvirt should
pre-create the socket, assume an existing path meaning that it was created
by libvirt.

https://bugzilla.redhat.com/show_bug.cgi?id=1633389

Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
This commit is contained in:
Ján Tomko 2018-09-27 16:13:18 +02:00
parent 9f81dc1081
commit d6b8838dd8
1 changed files with 6 additions and 1 deletions
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7
src/security/security_dac.c
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@ -1308,7 +1308,12 @@ virSecurityDACSetChardevLabel(virSecurityManagerPtr mgr,
break;
case VIR_DOMAIN_CHR_TYPE_UNIX:
if (!dev_source->data.nix.listen) {
if (!dev_source->data.nix.listen ||
(dev_source->data.nix.path &&
virFileExists(dev_source->data.nix.path))) {
/* Also label mode='bind' sockets if they exist,
* e.g. because they were created by libvirt
* and passed via FD */
if (virSecurityDACSetOwnership(mgr, NULL,
dev_source->data.nix.path,
user, group) < 0)