[libvirt] [PATCH v4 15/23] security_manager: Load lock plugin on init
Michal Privoznik
mprivozn at redhat.com
Mon Sep 10 09:36:16 UTC 2018
Now that we know what metadata lock manager user wishes to use we
can load it when initializing security driver. This is achieved
by adding new argument to virSecurityManagerNewDriver() and
subsequently to all functions that end up calling it.
The cfg.mk change is needed in order to allow lock_manager.h
inclusion in security driver without 'syntax-check' complaining.
This is safe thing to do as locking APIs will always exist (it's
only backend implementation that changes). However, instead of
allowing the include for all other drivers (like cpu, network,
and so on) allow it only for security driver. This will still
trigger the error if including from other drivers.
Signed-off-by: Michal Privoznik <mprivozn at redhat.com>
---
cfg.mk | 4 +++-
src/lxc/lxc_controller.c | 3 ++-
src/lxc/lxc_driver.c | 2 +-
src/qemu/qemu_driver.c | 3 +++
src/security/security_manager.c | 22 ++++++++++++++++++++++
src/security/security_manager.h | 2 ++
tests/seclabeltest.c | 2 +-
tests/securityselinuxlabeltest.c | 2 +-
tests/securityselinuxtest.c | 2 +-
tests/testutilsqemu.c | 2 +-
10 files changed, 37 insertions(+), 7 deletions(-)
diff --git a/cfg.mk b/cfg.mk
index 609ae869c2..e0a7b5105a 100644
--- a/cfg.mk
+++ b/cfg.mk
@@ -787,8 +787,10 @@ sc_prohibit_cross_inclusion:
case $$dir in \
util/) safe="util";; \
access/ | conf/) safe="($$dir|conf|util)";; \
- cpu/| network/| node_device/| rpc/| security/| storage/) \
+ cpu/| network/| node_device/| rpc/| storage/) \
safe="($$dir|util|conf|storage)";; \
+ security/) \
+ safe="($$dir|util|conf|storage|locking)";; \
xenapi/ | xenconfig/ ) safe="($$dir|util|conf|xen|cpu)";; \
*) safe="($$dir|$(mid_dirs)|util)";; \
esac; \
diff --git a/src/lxc/lxc_controller.c b/src/lxc/lxc_controller.c
index 4e84391bf5..5f957eb1f8 100644
--- a/src/lxc/lxc_controller.c
+++ b/src/lxc/lxc_controller.c
@@ -2625,7 +2625,8 @@ int main(int argc, char *argv[])
ctrl->handshakeFd = handshakeFd;
if (!(ctrl->securityManager = virSecurityManagerNew(securityDriver,
- LXC_DRIVER_NAME, 0)))
+ LXC_DRIVER_NAME,
+ "nop", 0)))
goto cleanup;
if (ctrl->def->seclabels) {
diff --git a/src/lxc/lxc_driver.c b/src/lxc/lxc_driver.c
index 8867645cdc..93aa25e9e6 100644
--- a/src/lxc/lxc_driver.c
+++ b/src/lxc/lxc_driver.c
@@ -1532,7 +1532,7 @@ lxcSecurityInit(virLXCDriverConfigPtr cfg)
flags |= VIR_SECURITY_MANAGER_REQUIRE_CONFINED;
virSecurityManagerPtr mgr = virSecurityManagerNew(cfg->securityDriverName,
- LXC_DRIVER_NAME, flags);
+ LXC_DRIVER_NAME, "nop", flags);
if (!mgr)
goto error;
diff --git a/src/qemu/qemu_driver.c b/src/qemu/qemu_driver.c
index 6763c8cddc..4ac0d86803 100644
--- a/src/qemu/qemu_driver.c
+++ b/src/qemu/qemu_driver.c
@@ -355,6 +355,7 @@ qemuSecurityInit(virQEMUDriverPtr driver)
while (names && *names) {
if (!(mgr = qemuSecurityNew(*names,
QEMU_DRIVER_NAME,
+ cfg->metadataLockManagerName,
flags)))
goto error;
if (!stack) {
@@ -370,6 +371,7 @@ qemuSecurityInit(virQEMUDriverPtr driver)
} else {
if (!(mgr = qemuSecurityNew(NULL,
QEMU_DRIVER_NAME,
+ cfg->metadataLockManagerName,
flags)))
goto error;
if (!(stack = qemuSecurityNewStack(mgr)))
@@ -386,6 +388,7 @@ qemuSecurityInit(virQEMUDriverPtr driver)
cfg->user,
cfg->group,
flags,
+ cfg->metadataLockManagerName,
qemuSecurityChownCallback)))
goto error;
if (!stack) {
diff --git a/src/security/security_manager.c b/src/security/security_manager.c
index 9f770d8c53..5c8370c159 100644
--- a/src/security/security_manager.c
+++ b/src/security/security_manager.c
@@ -28,6 +28,7 @@
#include "viralloc.h"
#include "virobject.h"
#include "virlog.h"
+#include "locking/lock_manager.h"
#define VIR_FROM_THIS VIR_FROM_SECURITY
@@ -40,6 +41,8 @@ struct _virSecurityManager {
unsigned int flags;
const char *virtDriver;
void *privateData;
+
+ virLockManagerPluginPtr lockPlugin;
};
static virClassPtr virSecurityManagerClass;
@@ -52,6 +55,9 @@ void virSecurityManagerDispose(void *obj)
if (mgr->drv->close)
mgr->drv->close(mgr);
+
+ virObjectUnref(mgr->lockPlugin);
+
VIR_FREE(mgr->privateData);
}
@@ -71,6 +77,7 @@ VIR_ONCE_GLOBAL_INIT(virSecurityManager);
static virSecurityManagerPtr
virSecurityManagerNewDriver(virSecurityDriverPtr drv,
const char *virtDriver,
+ const char *lockManagerPluginName,
unsigned int flags)
{
virSecurityManagerPtr mgr = NULL;
@@ -90,6 +97,14 @@ virSecurityManagerNewDriver(virSecurityDriverPtr drv,
if (!(mgr = virObjectLockableNew(virSecurityManagerClass)))
goto error;
+ if (!lockManagerPluginName)
+ lockManagerPluginName = "nop";
+
+ if (!(mgr->lockPlugin = virLockManagerPluginNew(lockManagerPluginName,
+ NULL, NULL, 0))) {
+ goto error;
+ }
+
mgr->drv = drv;
mgr->flags = flags;
mgr->virtDriver = virtDriver;
@@ -112,6 +127,7 @@ virSecurityManagerNewStack(virSecurityManagerPtr primary)
virSecurityManagerPtr mgr =
virSecurityManagerNewDriver(&virSecurityDriverStack,
virSecurityManagerGetDriver(primary),
+ NULL,
primary->flags);
if (!mgr)
@@ -120,6 +136,8 @@ virSecurityManagerNewStack(virSecurityManagerPtr primary)
if (virSecurityStackAddNested(mgr, primary) < 0)
goto error;
+ mgr->lockPlugin = virObjectRef(mgr->lockPlugin);
+
return mgr;
error:
virObjectUnref(mgr);
@@ -142,6 +160,7 @@ virSecurityManagerNewDAC(const char *virtDriver,
uid_t user,
gid_t group,
unsigned int flags,
+ const char *lockManagerPluginName,
virSecurityManagerDACChownCallback chownCallback)
{
virSecurityManagerPtr mgr;
@@ -152,6 +171,7 @@ virSecurityManagerNewDAC(const char *virtDriver,
mgr = virSecurityManagerNewDriver(&virSecurityDriverDAC,
virtDriver,
+ lockManagerPluginName,
flags & VIR_SECURITY_MANAGER_NEW_MASK);
if (!mgr)
@@ -173,6 +193,7 @@ virSecurityManagerNewDAC(const char *virtDriver,
virSecurityManagerPtr
virSecurityManagerNew(const char *name,
const char *virtDriver,
+ const char *lockManagerPluginName,
unsigned int flags)
{
virSecurityDriverPtr drv = virSecurityDriverLookup(name, virtDriver);
@@ -201,6 +222,7 @@ virSecurityManagerNew(const char *name,
return virSecurityManagerNewDriver(drv,
virtDriver,
+ lockManagerPluginName,
flags);
}
diff --git a/src/security/security_manager.h b/src/security/security_manager.h
index 1ead369e82..c537e1c994 100644
--- a/src/security/security_manager.h
+++ b/src/security/security_manager.h
@@ -45,6 +45,7 @@ typedef enum {
virSecurityManagerPtr virSecurityManagerNew(const char *name,
const char *virtDriver,
+ const char *lockManagerPluginName,
unsigned int flags);
virSecurityManagerPtr virSecurityManagerNewStack(virSecurityManagerPtr primary);
@@ -70,6 +71,7 @@ virSecurityManagerPtr virSecurityManagerNewDAC(const char *virtDriver,
uid_t user,
gid_t group,
unsigned int flags,
+ const char *lockManagerPluginName,
virSecurityManagerDACChownCallback chownCallback);
int virSecurityManagerPreFork(virSecurityManagerPtr mgr);
diff --git a/tests/seclabeltest.c b/tests/seclabeltest.c
index 4cda80cec2..6aafc45e64 100644
--- a/tests/seclabeltest.c
+++ b/tests/seclabeltest.c
@@ -18,7 +18,7 @@ mymain(void)
if (virThreadInitialize() < 0)
return EXIT_FAILURE;
- mgr = virSecurityManagerNew(NULL, "QEMU", VIR_SECURITY_MANAGER_DEFAULT_CONFINED);
+ mgr = virSecurityManagerNew(NULL, "QEMU", "nop", VIR_SECURITY_MANAGER_DEFAULT_CONFINED);
if (mgr == NULL) {
fprintf(stderr, "Failed to start security driver");
return EXIT_FAILURE;
diff --git a/tests/securityselinuxlabeltest.c b/tests/securityselinuxlabeltest.c
index 48fee7cd28..85797411eb 100644
--- a/tests/securityselinuxlabeltest.c
+++ b/tests/securityselinuxlabeltest.c
@@ -349,7 +349,7 @@ mymain(void)
if (!rc)
return EXIT_AM_SKIP;
- if (!(mgr = virSecurityManagerNew("selinux", "QEMU",
+ if (!(mgr = virSecurityManagerNew("selinux", "QEMU", "nop",
VIR_SECURITY_MANAGER_DEFAULT_CONFINED |
VIR_SECURITY_MANAGER_PRIVILEGED))) {
VIR_TEST_VERBOSE("Unable to initialize security driver: %s\n",
diff --git a/tests/securityselinuxtest.c b/tests/securityselinuxtest.c
index a785e9a7da..652981c895 100644
--- a/tests/securityselinuxtest.c
+++ b/tests/securityselinuxtest.c
@@ -275,7 +275,7 @@ mymain(void)
int ret = 0;
virSecurityManagerPtr mgr;
- if (!(mgr = virSecurityManagerNew("selinux", "QEMU",
+ if (!(mgr = virSecurityManagerNew("selinux", "QEMU", "nop",
VIR_SECURITY_MANAGER_DEFAULT_CONFINED |
VIR_SECURITY_MANAGER_PRIVILEGED))) {
fprintf(stderr, "Unable to initialize security driver: %s\n",
diff --git a/tests/testutilsqemu.c b/tests/testutilsqemu.c
index 70bed461b5..f9972f7adc 100644
--- a/tests/testutilsqemu.c
+++ b/tests/testutilsqemu.c
@@ -717,7 +717,7 @@ int qemuTestDriverInit(virQEMUDriver *driver)
if (qemuTestCapsCacheInsert(driver->qemuCapsCache, NULL) < 0)
goto error;
- if (!(mgr = virSecurityManagerNew("none", "qemu",
+ if (!(mgr = virSecurityManagerNew("none", "qemu", "nop",
VIR_SECURITY_MANAGER_PRIVILEGED)))
goto error;
if (!(driver->securityManager = virSecurityManagerNewStack(mgr)))
--
2.16.4
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