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From 1cabfada0f1a83ae78b6a7dbb9128512369fd6f4 Mon Sep 17 00:00:00 2001
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Message-Id: <1cabfada0f1a83ae78b6a7dbb9128512369fd6f4@dist-git>
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From: Pavel Hrdina <phrdina@redhat.com>
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Date: Mon, 1 Jul 2019 17:07:16 +0200
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Subject: [PATCH] vircgroup: introduce virCgroupV2CopyPlacement
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
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(cherry picked from commit 7a86201dd6e8cc7e418ea0891aeb44bacd08a10d)
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Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1689297
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Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
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Message-Id: <70993f08246ff3782d9b4a5bdf9187a0c1b57882.1561993100.git.phrdina@redhat.com>
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Reviewed-by: Ján Tomko <jtomko@redhat.com>
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---
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 src/util/vircgroupv2.c | 27 +++++++++++++++++++++++++++
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 1 file changed, 27 insertions(+)
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diff --git a/src/util/vircgroupv2.c b/src/util/vircgroupv2.c
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index 5d3c80b309..ed87b35db7 100644
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--- a/src/util/vircgroupv2.c
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+++ b/src/util/vircgroupv2.c
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@@ -140,12 +140,39 @@ virCgroupV2CopyMounts(virCgroupPtr group,
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 }
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+static int
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+virCgroupV2CopyPlacement(virCgroupPtr group,
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+                         const char *path,
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+                         virCgroupPtr parent)
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+{
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+    if (path[0] == '/') {
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+        if (VIR_STRDUP(group->unified.placement, path) < 0)
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+            return -1;
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+    } else {
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+        /*
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+         * parent == "/" + path="" => "/"
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+         * parent == "/libvirt.service" + path == "" => "/libvirt.service"
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+         * parent == "/libvirt.service" + path == "foo" => "/libvirt.service/foo"
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+         */
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+        if (virAsprintf(&group->unified.placement, "%s%s%s",
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+                        parent->unified.placement,
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+                        (STREQ(parent->unified.placement, "/") ||
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+                         STREQ(path, "") ? "" : "/"),
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+                        path) < 0)
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+            return -1;
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+    }
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+
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+    return 0;
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+}
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+
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+
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 virCgroupBackend virCgroupV2Backend = {
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     .type = VIR_CGROUP_BACKEND_TYPE_V2,
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     .available = virCgroupV2Available,
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     .validateMachineGroup = virCgroupV2ValidateMachineGroup,
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     .copyMounts = virCgroupV2CopyMounts,
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+    .copyPlacement = virCgroupV2CopyPlacement,
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 };
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-- 
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2.22.0
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