[libvirt] [PATCH 1/9] vircgroup: cleanup controllers not managed by systemd on error

Pavel Hrdina posted 9 patches 5 years, 12 months ago
There is a newer version of this series
[libvirt] [PATCH 1/9] vircgroup: cleanup controllers not managed by systemd on error
Posted by Pavel Hrdina 5 years, 12 months ago
If virCgroupEnableMissingControllers() fails it could already create
some directories, we should clean it up as well.

Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
---
 src/util/vircgroup.c | 25 +++++++++++++++----------
 1 file changed, 15 insertions(+), 10 deletions(-)

diff --git a/src/util/vircgroup.c b/src/util/vircgroup.c
index 64507bf8aa..6aa30a82be 100644
--- a/src/util/vircgroup.c
+++ b/src/util/vircgroup.c
@@ -1555,6 +1555,7 @@ virCgroupNewMachineSystemd(const char *name,
     int rv;
     virCgroupPtr init;
     VIR_AUTOFREE(char *) path = NULL;
+    virErrorPtr saved = NULL;
 
     VIR_DEBUG("Trying to setup machine '%s' via systemd", name);
     if ((rv = virSystemdCreateMachine(name,
@@ -1588,20 +1589,24 @@ virCgroupNewMachineSystemd(const char *name,
 
     if (virCgroupEnableMissingControllers(path, pidleader,
                                           controllers, group) < 0) {
-        return -1;
+        goto error;
     }
 
-    if (virCgroupAddTask(*group, pidleader) < 0) {
-        virErrorPtr saved = virSaveLastError();
-        virCgroupRemove(*group);
-        virCgroupFree(group);
-        if (saved) {
-            virSetError(saved);
-            virFreeError(saved);
-        }
-    }
+    if (virCgroupAddTask(*group, pidleader) < 0)
+        goto error;
 
     return 0;
+
+ error:
+    saved = virSaveLastError();
+    virCgroupRemove(*group);
+    virCgroupFree(group);
+    if (saved) {
+        virSetError(saved);
+        virFreeError(saved);
+    }
+
+    return -1;
 }
 
 
-- 
2.17.1

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Re: [libvirt] [PATCH 1/9] vircgroup: cleanup controllers not managed by systemd on error
Posted by Fabiano Fidêncio 5 years, 12 months ago
On Tue, Sep 18, 2018 at 2:17 PM, Pavel Hrdina <phrdina@redhat.com> wrote:

> If virCgroupEnableMissingControllers() fails it could already create
> some directories, we should clean it up as well.
>
> Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
>

Reviewed-by: Fabiano Fidêncio <fidencio@redhat.com>


> ---
>  src/util/vircgroup.c | 25 +++++++++++++++----------
>  1 file changed, 15 insertions(+), 10 deletions(-)
>
> diff --git a/src/util/vircgroup.c b/src/util/vircgroup.c
> index 64507bf8aa..6aa30a82be 100644
> --- a/src/util/vircgroup.c
> +++ b/src/util/vircgroup.c
> @@ -1555,6 +1555,7 @@ virCgroupNewMachineSystemd(const char *name,
>      int rv;
>      virCgroupPtr init;
>      VIR_AUTOFREE(char *) path = NULL;
> +    virErrorPtr saved = NULL;
>
>      VIR_DEBUG("Trying to setup machine '%s' via systemd", name);
>      if ((rv = virSystemdCreateMachine(name,
> @@ -1588,20 +1589,24 @@ virCgroupNewMachineSystemd(const char *name,
>
>      if (virCgroupEnableMissingControllers(path, pidleader,
>                                            controllers, group) < 0) {
> -        return -1;
> +        goto error;
>      }
>
> -    if (virCgroupAddTask(*group, pidleader) < 0) {
> -        virErrorPtr saved = virSaveLastError();
> -        virCgroupRemove(*group);
> -        virCgroupFree(group);
> -        if (saved) {
> -            virSetError(saved);
> -            virFreeError(saved);
> -        }
> -    }
> +    if (virCgroupAddTask(*group, pidleader) < 0)
> +        goto error;
>
>      return 0;
> +
> + error:
> +    saved = virSaveLastError();
> +    virCgroupRemove(*group);
> +    virCgroupFree(group);
> +    if (saved) {
> +        virSetError(saved);
> +        virFreeError(saved);
> +    }
> +
> +    return -1;
>  }
>
>
> --
> 2.17.1
>
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