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security: Introduce SetSocketLabel

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This API labels all sockets created until ClearSocketLabel is called in
a way that a vm can access them (i.e., they are labeled with svirt_t
based label in SELinux).
This commit is contained in:
Jiri Denemark 2011-08-26 09:39:32 +02:00
parent 4c85d96f27
commit 520d91f8bd
9 changed files with 95 additions and 0 deletions
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1
src/libvirt_private.syms
View File

@ -911,6 +911,7 @@ virSecurityManagerSetHostdevLabel;
virSecurityManagerSetProcessFDLabel;
virSecurityManagerSetProcessLabel;
virSecurityManagerSetSavedStateLabel;
virSecurityManagerSetSocketLabel;
virSecurityManagerVerify;
# sexpr.h

8
src/security/security_apparmor.c
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@ -584,6 +584,13 @@ AppArmorSetSecurityDaemonSocketLabel(virSecurityManagerPtr mgr ATTRIBUTE_UNUSED,
return 0;
}
static int
AppArmorSetSecuritySocketLabel(virSecurityManagerPtr mgr ATTRIBUTE_UNUSED,
virDomainObjPtr vm ATTRIBUTE_UNUSED)
{
return 0;
}
static int
AppArmorClearSecuritySocketLabel(virSecurityManagerPtr mgr ATTRIBUTE_UNUSED,
virDomainObjPtr vm ATTRIBUTE_UNUSED)
@ -836,6 +843,7 @@ virSecurityDriver virAppArmorSecurityDriver = {
AppArmorRestoreSecurityImageLabel,
AppArmorSetSecurityDaemonSocketLabel,
AppArmorSetSecuritySocketLabel,
AppArmorClearSecuritySocketLabel,
AppArmorGenSecurityLabel,

9
src/security/security_dac.c
View File

@ -674,6 +674,14 @@ virSecurityDACSetDaemonSocketLabel(virSecurityManagerPtr mgr ATTRIBUTE_UNUSED,
}
static int
virSecurityDACSetSocketLabel(virSecurityManagerPtr mgr ATTRIBUTE_UNUSED,
virDomainObjPtr vm ATTRIBUTE_UNUSED)
{
return 0;
}
static int
virSecurityDACClearSocketLabel(virSecurityManagerPtr mgr ATTRIBUTE_UNUSED,
virDomainObjPtr vm ATTRIBUTE_UNUSED)
@ -715,6 +723,7 @@ virSecurityDriver virSecurityDriverDAC = {
virSecurityDACRestoreSecurityImageLabel,
virSecurityDACSetDaemonSocketLabel,
virSecurityDACSetSocketLabel,
virSecurityDACClearSocketLabel,
virSecurityDACGenLabel,

3
src/security/security_driver.h
View File

@ -43,6 +43,8 @@ typedef int (*virSecurityDomainRestoreImageLabel) (virSecurityManagerPtr mgr,
virDomainDiskDefPtr disk);
typedef int (*virSecurityDomainSetDaemonSocketLabel)(virSecurityManagerPtr mgr,
virDomainObjPtr vm);
typedef int (*virSecurityDomainSetSocketLabel) (virSecurityManagerPtr mgr,
virDomainObjPtr vm);
typedef int (*virSecurityDomainClearSocketLabel)(virSecurityManagerPtr mgr,
virDomainObjPtr vm);
typedef int (*virSecurityDomainSetImageLabel) (virSecurityManagerPtr mgr,
@ -102,6 +104,7 @@ struct _virSecurityDriver {
virSecurityDomainRestoreImageLabel domainRestoreSecurityImageLabel;
virSecurityDomainSetDaemonSocketLabel domainSetSecurityDaemonSocketLabel;
virSecurityDomainSetSocketLabel domainSetSecuritySocketLabel;
virSecurityDomainClearSocketLabel domainClearSecuritySocketLabel;
virSecurityDomainGenLabel domainGenSecurityLabel;

10
src/security/security_manager.c
View File

@ -170,6 +170,16 @@ int virSecurityManagerSetDaemonSocketLabel(virSecurityManagerPtr mgr,
return -1;
}
int virSecurityManagerSetSocketLabel(virSecurityManagerPtr mgr,
virDomainObjPtr vm)
{
if (mgr->drv->domainSetSecuritySocketLabel)
return mgr->drv->domainSetSecuritySocketLabel(mgr, vm);
virSecurityReportError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
return -1;
}
int virSecurityManagerClearSocketLabel(virSecurityManagerPtr mgr,
virDomainObjPtr vm)
{

2
src/security/security_manager.h
View File

@ -55,6 +55,8 @@ int virSecurityManagerRestoreImageLabel(virSecurityManagerPtr mgr,
virDomainDiskDefPtr disk);
int virSecurityManagerSetDaemonSocketLabel(virSecurityManagerPtr mgr,
virDomainObjPtr vm);
int virSecurityManagerSetSocketLabel(virSecurityManagerPtr mgr,
virDomainObjPtr vm);
int virSecurityManagerClearSocketLabel(virSecurityManagerPtr mgr,
virDomainObjPtr vm);
int virSecurityManagerSetImageLabel(virSecurityManagerPtr mgr,

7
src/security/security_nop.c
View File

@ -59,6 +59,12 @@ static int virSecurityDomainSetDaemonSocketLabelNop(virSecurityManagerPtr mgr AT
return 0;
}
static int virSecurityDomainSetSocketLabelNop(virSecurityManagerPtr mgr ATTRIBUTE_UNUSED,
virDomainObjPtr vm ATTRIBUTE_UNUSED)
{
return 0;
}
static int virSecurityDomainClearSocketLabelNop(virSecurityManagerPtr mgr ATTRIBUTE_UNUSED,
virDomainObjPtr vm ATTRIBUTE_UNUSED)
{
@ -172,6 +178,7 @@ virSecurityDriver virSecurityDriverNop = {
virSecurityDomainRestoreImageLabelNop,
virSecurityDomainSetDaemonSocketLabelNop,
virSecurityDomainSetSocketLabelNop,
virSecurityDomainClearSocketLabelNop,
virSecurityDomainGenLabelNop,

38
src/security/security_selinux.c
View File

@ -1136,6 +1136,43 @@ done:
return rc;
}
static int
SELinuxSetSecuritySocketLabel(virSecurityManagerPtr mgr,
virDomainObjPtr vm)
{
const virSecurityLabelDefPtr secdef = &vm->def->seclabel;
int rc = -1;
if (secdef->label == NULL)
return 0;
if (!STREQ(virSecurityManagerGetModel(mgr), secdef->model)) {
virSecurityReportError(VIR_ERR_INTERNAL_ERROR,
_("security label driver mismatch: "
"'%s' model configured for domain, but "
"hypervisor driver is '%s'."),
secdef->model, virSecurityManagerGetModel(mgr));
goto done;
}
VIR_DEBUG("Setting VM %s socket context %s",
vm->def->name, secdef->label);
if (setsockcreatecon(secdef->label) == -1) {
virReportSystemError(errno,
_("unable to set socket security context '%s'"),
secdef->label);
goto done;
}
rc = 0;
done:
if (security_getenforce() != 1)
rc = 0;
return rc;
}
static int
SELinuxClearSecuritySocketLabel(virSecurityManagerPtr mgr,
virDomainObjPtr vm)
@ -1313,6 +1350,7 @@ virSecurityDriver virSecurityDriverSELinux = {
SELinuxRestoreSecurityImageLabel,
SELinuxSetSecurityDaemonSocketLabel,
SELinuxSetSecuritySocketLabel,
SELinuxClearSecuritySocketLabel,
SELinuxGenSecurityLabel,

17
src/security/security_stack.c
View File

@ -354,6 +354,22 @@ virSecurityStackSetDaemonSocketLabel(virSecurityManagerPtr mgr,
}
static int
virSecurityStackSetSocketLabel(virSecurityManagerPtr mgr,
virDomainObjPtr vm)
{
virSecurityStackDataPtr priv = virSecurityManagerGetPrivateData(mgr);
int rc = 0;
if (virSecurityManagerSetSocketLabel(priv->secondary, vm) < 0)
rc = -1;
if (virSecurityManagerSetSocketLabel(priv->primary, vm) < 0)
rc = -1;
return rc;
}
static int
virSecurityStackClearSocketLabel(virSecurityManagerPtr mgr,
virDomainObjPtr vm)
@ -419,6 +435,7 @@ virSecurityDriver virSecurityDriverStack = {
virSecurityStackRestoreSecurityImageLabel,
virSecurityStackSetDaemonSocketLabel,
virSecurityStackSetSocketLabel,
virSecurityStackClearSocketLabel,
virSecurityStackGenLabel,