[libvirt] [PATCH 10/47] vircgroup: extract virCgroupV1GetPlacement
Ján Tomko
jtomko at redhat.com
Mon Sep 24 17:06:59 UTC 2018
On Tue, Sep 18, 2018 at 05:45:31PM +0200, Pavel Hrdina wrote:
>Signed-off-by: Pavel Hrdina <phrdina at redhat.com>
>---
> src/util/vircgroup.c | 3 +--
> src/util/vircgroupbackend.h | 4 ++++
> src/util/vircgroupv1.c | 12 ++++++++++++
> 3 files changed, 17 insertions(+), 2 deletions(-)
>
>diff --git a/src/util/vircgroup.c b/src/util/vircgroup.c
>index 864dd876b0..ff102e2cb0 100644
>--- a/src/util/vircgroup.c
>+++ b/src/util/vircgroup.c
>@@ -1317,8 +1317,7 @@ virCgroupNewMachineSystemd(const char *name,
> &init) < 0)
> return -1;
>
>- path = init->controllers[VIR_CGROUP_CONTROLLER_SYSTEMD].placement;
>- init->controllers[VIR_CGROUP_CONTROLLER_SYSTEMD].placement = NULL;
>+ path = init->backend->getPlacement(init);
> virCgroupFree(&init);
>
> if (!path || STREQ(path, "/") || path[0] != '/') {
>diff --git a/src/util/vircgroupbackend.h b/src/util/vircgroupbackend.h
>index 086cfb8090..1856164c6b 100644
>--- a/src/util/vircgroupbackend.h
>+++ b/src/util/vircgroupbackend.h
>@@ -66,6 +66,9 @@ typedef int
> (*virCgroupValidatePlacementCB)(virCgroupPtr group,
> pid_t pid);
>
>+typedef char *
>+(*virCgroupGetPlacementCB)(virCgroupPtr group);
>+
> struct _virCgroupBackend {
> virCgroupBackendType type;
>
>@@ -77,6 +80,7 @@ struct _virCgroupBackend {
> virCgroupDetectMountsCB detectMounts;
> virCgroupDetectPlacementCB detectPlacement;
> virCgroupValidatePlacementCB validatePlacement;
>+ virCgroupGetPlacementCB getPlacement;
> };
> typedef struct _virCgroupBackend virCgroupBackend;
> typedef virCgroupBackend *virCgroupBackendPtr;
>diff --git a/src/util/vircgroupv1.c b/src/util/vircgroupv1.c
>index 68df323d72..ab8988cd59 100644
>--- a/src/util/vircgroupv1.c
>+++ b/src/util/vircgroupv1.c
>@@ -402,6 +402,17 @@ virCgroupV1ValidatePlacement(virCgroupPtr group,
> }
>
>
>+static char *
>+virCgroupV1GetPlacement(virCgroupPtr group)
>+{
>+ char *ret = NULL;
>+
>+ ignore_value(VIR_STRDUP(ret, group->controllers[VIR_CGROUP_CONTROLLER_SYSTEMD].placement));
This ignores a potential OOM error which could not have happened before.
I'd suggest calling this virCgroupV1StealPlacement and using
VIR_STEAL_PTR here.
Alternatively, propagate the return value of VIR_STRDUP.
Reviewed-by: Ján Tomko <jtomko at redhat.com>
Jano
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