10:08 a.m.
* get rid of a pointless error logged when system D-Bus is not available
* do not send messages on systems without logind
* remove four extra dbus calls on libvirtd startup when checking for
logind availability
Ján Tomko (3):
util: introduce virSystemdHasLogind
util: cache the result of whether logind is available
rpc: make virNetDaemonCallInhibit a no-op with no logind
src/libvirt_private.syms | 2 ++
src/rpc/virnetdaemon.c | 3 +++
src/util/virsystemd.c | 37 ++++++++++++++++++++++++++++++++-----
src/util/virsystemd.h | 2 ++
src/util/virsystemdpriv.h | 1 +
tests/virsystemdtest.c | 3 +++
6 files changed, 43 insertions(+), 5 deletions(-)
--
2.19.2
10:08 a.m.
New subject: [libvirt] [PATCH 1/3] util: introduce virSystemdHasLogind
Split it out from virSystemdPMSupportTarget.
Signed-off-by: Ján Tomko <jtomko(a)redhat.com>
---
src/util/virsystemd.c | 21 ++++++++++++++++-----
1 file changed, 16 insertions(+), 5 deletions(-)
diff --git a/src/util/virsystemd.c b/src/util/virsystemd.c
index 26b751311f..b401eda6a2 100644
--- a/src/util/virsystemd.c
+++ b/src/util/virsystemd.c
@@ -174,6 +174,21 @@ virSystemdHasMachined(void)
return ret;
}
+static int
+virSystemdHasLogind(void)
+{
+ int ret;
+
+ ret = virDBusIsServiceEnabled("org.freedesktop.login1");
+ if (ret < 0)
+ return ret;
+
+ if ((ret = virDBusIsServiceRegistered("org.freedesktop.login1")) < 0)
+ return ret;
+
+ return ret;
+}
+
char *
virSystemdGetMachineNameByPID(pid_t pid)
@@ -547,11 +562,7 @@ virSystemdPMSupportTarget(const char *methodName, bool *result)
DBusMessage *message = NULL;
char *response;
- ret = virDBusIsServiceEnabled("org.freedesktop.login1");
- if (ret < 0)
- return ret;
-
- if ((ret = virDBusIsServiceRegistered("org.freedesktop.login1")) < 0)
+ if ((ret = virSystemdHasLogind()) < 0)
return ret;
if (!(conn = virDBusGetSystemBus()))
--
2.19.2
10:08 a.m.
New subject: [libvirt] [PATCH 2/3] util: cache the result of whether logind is available
Similar to how we cache the availability of machined.
Signed-off-by: Ján Tomko <jtomko(a)redhat.com>
---
src/libvirt_private.syms | 1 +
src/util/virsystemd.c | 20 ++++++++++++++++++--
src/util/virsystemdpriv.h | 1 +
tests/virsystemdtest.c | 3 +++
4 files changed, 23 insertions(+), 2 deletions(-)
diff --git a/src/libvirt_private.syms b/src/libvirt_private.syms
index 7a3feb8efa..5940342087 100644
--- a/src/libvirt_private.syms
+++ b/src/libvirt_private.syms
@@ -3135,6 +3135,7 @@ virSystemdCanSuspend;
virSystemdCreateMachine;
virSystemdGetActivation;
virSystemdGetMachineNameByPID;
+virSystemdHasLogindResetCachedValue;
virSystemdHasMachinedResetCachedValue;
virSystemdMakeScopeName;
virSystemdMakeSliceName;
diff --git a/src/util/virsystemd.c b/src/util/virsystemd.c
index b401eda6a2..66d0b7bd53 100644
--- a/src/util/virsystemd.c
+++ b/src/util/virsystemd.c
@@ -140,6 +140,7 @@ char *virSystemdMakeSliceName(const char *partition)
}
static int virSystemdHasMachinedCachedValue = -1;
+static int virSystemdHasLogindCachedValue = -1;
/* Reset the cache from tests for testing the underlying dbus calls
* as well */
@@ -148,6 +149,12 @@ void virSystemdHasMachinedResetCachedValue(void)
virSystemdHasMachinedCachedValue = -1;
}
+void virSystemdHasLogindResetCachedValue(void)
+{
+ virSystemdHasLogindCachedValue = -1;
+}
+
+
/* -2 = machine1 is not supported on this machine
* -1 = error
* 0 = machine1 is available
@@ -178,14 +185,23 @@ static int
virSystemdHasLogind(void)
{
int ret;
+ int val;
+
+ val = virAtomicIntGet(&virSystemdHasLogindCachedValue);
+ if (val != -1)
+ return val;
ret = virDBusIsServiceEnabled("org.freedesktop.login1");
- if (ret < 0)
+ if (ret < 0) {
+ if (ret == -2)
+ virAtomicIntSet(&virSystemdHasLogindCachedValue, -2);
return ret;
+ }
- if ((ret = virDBusIsServiceRegistered("org.freedesktop.login1")) < 0)
+ if ((ret = virDBusIsServiceRegistered("org.freedesktop.login1")) == -1)
return ret;
+ virAtomicIntSet(&virSystemdHasLogindCachedValue, ret);
return ret;
}
diff --git a/src/util/virsystemdpriv.h b/src/util/virsystemdpriv.h
index a49c91e649..736c53d3fa 100644
--- a/src/util/virsystemdpriv.h
+++ b/src/util/virsystemdpriv.h
@@ -28,3 +28,4 @@
#include "virsystemd.h"
void virSystemdHasMachinedResetCachedValue(void);
+void virSystemdHasLogindResetCachedValue(void);
diff --git a/tests/virsystemdtest.c b/tests/virsystemdtest.c
index 340b038095..2dafce2764 100644
--- a/tests/virsystemdtest.c
+++ b/tests/virsystemdtest.c
@@ -751,12 +751,15 @@ mymain(void)
}; \
if (virTestRun("Test " name " ", testPMSupportHelper,
&data) < 0) \
ret = -1; \
+ virSystemdHasLogindResetCachedValue(); \
if (virTestRun("Test " name " no systemd ", \
testPMSupportHelperNoSystemd, &data) < 0) \
ret = -1; \
+ virSystemdHasLogindResetCachedValue(); \
if (virTestRun("Test systemd " name " not running ", \
testPMSupportSystemdNotRunning, &data) < 0) \
ret = -1; \
+ virSystemdHasLogindResetCachedValue(); \
} while (0)
TESTS_PM_SUPPORT_HELPER("canSuspend", &virSystemdCanSuspend);
--
2.19.2
10:08 a.m.
New subject: [libvirt] [PATCH 3/3] rpc: make virNetDaemonCallInhibit a no-op with no logind
As a side effect, this also silences the possible:
internal error: Unable to get DBus system bus connection:
Failed to connect to socket /run/dbus/system_bus_socket:
No such file or directory
error, since we check upfront whether dbus is available.
Signed-off-by: Ján Tomko <jtomko(a)redhat.com>
---
src/libvirt_private.syms | 1 +
src/rpc/virnetdaemon.c | 3 +++
src/util/virsystemd.c | 2 +-
src/util/virsystemd.h | 2 ++
4 files changed, 7 insertions(+), 1 deletion(-)
diff --git a/src/libvirt_private.syms b/src/libvirt_private.syms
index 5940342087..ff4ddd1c5c 100644
--- a/src/libvirt_private.syms
+++ b/src/libvirt_private.syms
@@ -3135,6 +3135,7 @@ virSystemdCanSuspend;
virSystemdCreateMachine;
virSystemdGetActivation;
virSystemdGetMachineNameByPID;
+virSystemdHasLogind;
virSystemdHasLogindResetCachedValue;
virSystemdHasMachinedResetCachedValue;
virSystemdMakeScopeName;
diff --git a/src/rpc/virnetdaemon.c b/src/rpc/virnetdaemon.c
index d098cf4ae9..7b68ddbdf2 100644
--- a/src/rpc/virnetdaemon.c
+++ b/src/rpc/virnetdaemon.c
@@ -508,6 +508,9 @@ virNetDaemonCallInhibit(virNetDaemonPtr dmn,
VIR_DEBUG("dmn=%p what=%s who=%s why=%s mode=%s",
dmn, NULLSTR(what), NULLSTR(who), NULLSTR(why), NULLSTR(mode));
+ if (virSystemdHasLogind() < 0)
+ return;
+
if (!(systemBus = virDBusGetSystemBus()))
return;
diff --git a/src/util/virsystemd.c b/src/util/virsystemd.c
index 66d0b7bd53..e75c5b835a 100644
--- a/src/util/virsystemd.c
+++ b/src/util/virsystemd.c
@@ -181,7 +181,7 @@ virSystemdHasMachined(void)
return ret;
}
-static int
+int
virSystemdHasLogind(void)
{
int ret;
diff --git a/src/util/virsystemd.h b/src/util/virsystemd.h
index 96626f8fff..5f1a4413fe 100644
--- a/src/util/virsystemd.h
+++ b/src/util/virsystemd.h
@@ -57,6 +57,8 @@ int virSystemdTerminateMachine(const char *name);
void virSystemdNotifyStartup(void);
+int virSystemdHasLogind(void);
+
int virSystemdCanSuspend(bool *result);
int virSystemdCanHibernate(bool *result);
--
2.19.2
7:25 a.m.
On 8/13/19 5:08 PM, Ján Tomko wrote:
* get rid of a pointless error logged when system D-Bus is not
available
* do not send messages on systems without logind
* remove four extra dbus calls on libvirtd startup when checking for
logind availability
Ján Tomko (3):
util: introduce virSystemdHasLogind
util: cache the result of whether logind is available
rpc: make virNetDaemonCallInhibit a no-op with no logind
src/libvirt_private.syms | 2 ++
src/rpc/virnetdaemon.c | 3 +++
src/util/virsystemd.c | 37 ++++++++++++++++++++++++++++++++-----
src/util/virsystemd.h | 2 ++
src/util/virsystemdpriv.h | 1 +
tests/virsystemdtest.c | 3 +++
6 files changed, 43 insertions(+), 5 deletions(-)
Reviewed-by: Michal Privoznik <mprivozn(a)redhat.com>
Michal
1928
days inactive
1929
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4 comments
2 participants
participants (2)
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Ján Tomko -
Michal Privoznik