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From c94691d796682d951ffa8fb3a4fcb985aae17d9b Mon Sep 17 00:00:00 2001
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Message-Id: <c94691d796682d951ffa8fb3a4fcb985aae17d9b@dist-git>
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From: Pavel Hrdina <phrdina@redhat.com>
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Date: Fri, 19 Feb 2021 13:34:00 +0100
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Subject: [PATCH] tests: add cgroup nested tests
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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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Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
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(cherry picked from commit 85099c339346e41f457234e8ad831841aef1d5e3)
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Conflicts:
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    tests/vircgrouptest.c
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        - missing upstream g_autofree rewrite
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Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1798463
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Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
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Message-Id: <abf8f7673bd59c6e3d9b596cf9a86029b1f1e9c1.1613737828.git.phrdina@redhat.com>
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Reviewed-by: Ján Tomko <jtomko@redhat.com>
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---
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 tests/vircgroupdata/systemd-legacy.cgroups    | 12 +++
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 tests/vircgroupdata/systemd-legacy.mounts     | 11 +++
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 .../vircgroupdata/systemd-legacy.self.cgroup  | 11 +++
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 tests/vircgroupdata/systemd-unified.cgroups   | 13 +++
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 tests/vircgroupdata/systemd-unified.mounts    |  1 +
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 .../vircgroupdata/systemd-unified.self.cgroup |  1 +
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 tests/vircgrouptest.c                         | 82 +++++++++++++++++++
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 7 files changed, 131 insertions(+)
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 create mode 100644 tests/vircgroupdata/systemd-legacy.cgroups
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 create mode 100644 tests/vircgroupdata/systemd-legacy.mounts
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 create mode 100644 tests/vircgroupdata/systemd-legacy.self.cgroup
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 create mode 100644 tests/vircgroupdata/systemd-unified.cgroups
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 create mode 100644 tests/vircgroupdata/systemd-unified.mounts
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 create mode 100644 tests/vircgroupdata/systemd-unified.self.cgroup
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diff --git a/tests/vircgroupdata/systemd-legacy.cgroups b/tests/vircgroupdata/systemd-legacy.cgroups
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new file mode 100644
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index 0000000000..444354e3c8
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--- /dev/null
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+++ b/tests/vircgroupdata/systemd-legacy.cgroups
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@@ -0,0 +1,12 @@
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+#subsys_name	hierarchy	num_cgroups	enabled
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+blkio       1       1       1
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+cpu         2       1       1
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+cpuacct     3       1       1
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+cpuset      4       1       1
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+devices     5       1       1
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+freezer     6       1       1
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+hugetlb     7       1       1
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+memory      8       1       1
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+net_cls     9       1       1
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+perf_event  10      1       1
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+pids        11      1       1
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diff --git a/tests/vircgroupdata/systemd-legacy.mounts b/tests/vircgroupdata/systemd-legacy.mounts
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new file mode 100644
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index 0000000000..23462e9e68
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--- /dev/null
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+++ b/tests/vircgroupdata/systemd-legacy.mounts
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@@ -0,0 +1,11 @@
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+cgroup /not/really/sys/fs/cgroup/blkio cgroup rw,seclabel,nosuid,nodev,noexec,relatime,blkio 0 0
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+cgroup /not/really/sys/fs/cgroup/cpu cgroup rw,seclabel,nosuid,nodev,noexec,relatime,cpu 0 0
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+cgroup /not/really/sys/fs/cgroup/cpuacct cgroup rw,seclabel,nosuid,nodev,noexec,relatime,cpuacct 0 0
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+cgroup /not/really/sys/fs/cgroup/cpuset cgroup rw,seclabel,nosuid,nodev,noexec,relatime,cpuset 0 0
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+cgroup /not/really/sys/fs/cgroup/devices cgroup rw,seclabel,nosuid,nodev,noexec,relatime,devices 0 0
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+cgroup /not/really/sys/fs/cgroup/freezer cgroup rw,seclabel,nosuid,nodev,noexec,relatime,freezer 0 0
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+cgroup /not/really/sys/fs/cgroup/hugetlb cgroup rw,seclabel,nosuid,nodev,noexec,relatime,hugetlb 0 0
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+cgroup /not/really/sys/fs/cgroup/memory cgroup rw,seclabel,nosuid,nodev,noexec,relatime,memory 0 0
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+cgroup /not/really/sys/fs/cgroup/net_cls cgroup rw,seclabel,nosuid,nodev,noexec,relatime,net_cls 0 0
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+cgroup /not/really/sys/fs/cgroup/perf_event cgroup rw,seclabel,nosuid,nodev,noexec,relatime,perf_event 0 0
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+cgroup /not/really/sys/fs/cgroup/pids cgroup rw,seclabel,nosuid,nodev,noexec,relatime,pids 0 0
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diff --git a/tests/vircgroupdata/systemd-legacy.self.cgroup b/tests/vircgroupdata/systemd-legacy.self.cgroup
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new file mode 100644
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index 0000000000..5c133a3c08
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--- /dev/null
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+++ b/tests/vircgroupdata/systemd-legacy.self.cgroup
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@@ -0,0 +1,11 @@
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+1:blkio:/libvirt
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+2:cpu:/libvirt/emulator
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+3:cpuacct:/libvirt/emulator
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+4:cpuset:/libvirt/emulator
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+5:devices:/libvirt
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+6:freezer:/libvirt
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+7:hugetlb:/
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+8:memory:/libvirt
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+9:net_cls:/libvirt
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+10:perf_event:/libvirt
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+11:pids:/
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diff --git a/tests/vircgroupdata/systemd-unified.cgroups b/tests/vircgroupdata/systemd-unified.cgroups
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new file mode 100644
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index 0000000000..e0d8a3561c
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--- /dev/null
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+++ b/tests/vircgroupdata/systemd-unified.cgroups
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@@ -0,0 +1,13 @@
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+#subsys_name	hierarchy	num_cgroups	enabled
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+cpuset      0       1       1
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+cpu         0       1       1
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+cpuacct     0       1       1
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+blkio       0       1       1
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+memory      0       1       1
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+devices     0       1       1
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+freezer     0       1       1
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+net_cls     0       1       1
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+perf_event  0       1       1
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+net_prio    0       1       1
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+hugetlb     0       1       1
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+pids        0       1       1
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diff --git a/tests/vircgroupdata/systemd-unified.mounts b/tests/vircgroupdata/systemd-unified.mounts
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new file mode 100644
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index 0000000000..8225f37f45
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--- /dev/null
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+++ b/tests/vircgroupdata/systemd-unified.mounts
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@@ -0,0 +1 @@
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+cgroup2 /not/really/sys/fs/cgroup cgroup2 rw,seclabel,nosuid,nodev,noexec,relatime,nsdelegate 0 0
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diff --git a/tests/vircgroupdata/systemd-unified.self.cgroup b/tests/vircgroupdata/systemd-unified.self.cgroup
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new file mode 100644
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index 0000000000..6007ce7e18
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--- /dev/null
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+++ b/tests/vircgroupdata/systemd-unified.self.cgroup
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@@ -0,0 +1 @@
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+0::/libvirt/emulator
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diff --git a/tests/vircgrouptest.c b/tests/vircgrouptest.c
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index 2d6f52fb6e..aebb90c16c 100644
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--- a/tests/vircgrouptest.c
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+++ b/tests/vircgrouptest.c
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@@ -636,6 +636,74 @@ static int testCgroupNewForSelfHybrid(const void *args G_GNUC_UNUSED)
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 }
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+static int testCgroupNewForSelfSystemdLegacy(const void *args G_GNUC_UNUSED)
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+{
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+    virCgroupPtr cgroup = NULL;
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+    int ret = -1;
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+    const char *empty[VIR_CGROUP_CONTROLLER_LAST] = { 0 };
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+    const char *mounts[VIR_CGROUP_CONTROLLER_LAST] = {
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+        [VIR_CGROUP_CONTROLLER_BLKIO] = "/not/really/sys/fs/cgroup/blkio",
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+        [VIR_CGROUP_CONTROLLER_CPU] = "/not/really/sys/fs/cgroup/cpu",
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+        [VIR_CGROUP_CONTROLLER_CPUACCT] = "/not/really/sys/fs/cgroup/cpuacct",
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+        [VIR_CGROUP_CONTROLLER_CPUSET] = "/not/really/sys/fs/cgroup/cpuset",
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+        [VIR_CGROUP_CONTROLLER_DEVICES] = "/not/really/sys/fs/cgroup/devices",
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+        [VIR_CGROUP_CONTROLLER_FREEZER] = "/not/really/sys/fs/cgroup/freezer",
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+        [VIR_CGROUP_CONTROLLER_MEMORY] = "/not/really/sys/fs/cgroup/memory",
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+        [VIR_CGROUP_CONTROLLER_NET_CLS] = "/not/really/sys/fs/cgroup/net_cls",
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+        [VIR_CGROUP_CONTROLLER_PERF_EVENT] = "/not/really/sys/fs/cgroup/perf_event",
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+    };
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+    const char *placement[VIR_CGROUP_CONTROLLER_LAST] = {
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+        [VIR_CGROUP_CONTROLLER_BLKIO] = "",
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+        [VIR_CGROUP_CONTROLLER_CPU] = "",
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+        [VIR_CGROUP_CONTROLLER_CPUACCT] = "",
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+        [VIR_CGROUP_CONTROLLER_CPUSET] = "",
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+        [VIR_CGROUP_CONTROLLER_DEVICES] = "",
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+        [VIR_CGROUP_CONTROLLER_FREEZER] = "",
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+        [VIR_CGROUP_CONTROLLER_MEMORY] = "",
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+        [VIR_CGROUP_CONTROLLER_NET_CLS] = "",
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+        [VIR_CGROUP_CONTROLLER_PERF_EVENT] = "",
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+    };
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+
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+    if (virCgroupNewSelf(&cgroup) < 0) {
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+        fprintf(stderr, "Cannot create cgroup for self\n");
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+        goto cleanup;
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+    }
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+
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+    ret = validateCgroup(cgroup, "", mounts, empty, placement, NULL, NULL, 0);
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+
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+ cleanup:
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+    virCgroupFree(&cgroup);
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+    return ret;
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+}
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+
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+
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+static int testCgroupNewForSelfSystemdUnified(const void *args G_GNUC_UNUSED)
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+{
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+    virCgroupPtr cgroup = NULL;
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+    int ret = -1;
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+    const char *empty[VIR_CGROUP_CONTROLLER_LAST] = { 0 };
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+    unsigned int controllers =
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+        (1 << VIR_CGROUP_CONTROLLER_CPU) |
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+        (1 << VIR_CGROUP_CONTROLLER_CPUACCT) |
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+        (1 << VIR_CGROUP_CONTROLLER_MEMORY) |
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+        (1 << VIR_CGROUP_CONTROLLER_DEVICES) |
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+        (1 << VIR_CGROUP_CONTROLLER_BLKIO);
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+
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+    if (virCgroupNewSelf(&cgroup) < 0) {
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+        fprintf(stderr, "Cannot create cgroup for self\n");
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+        goto cleanup;
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+    }
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+
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+    ret = validateCgroup(cgroup, "", empty, empty, empty,
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+                         "/not/really/sys/fs/cgroup", "",
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+                         controllers);
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+
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+ cleanup:
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+    virCgroupFree(&cgroup);
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+    return ret;
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+}
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+
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+
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 static int testCgroupAvailable(const void *args)
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 {
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     bool got = virCgroupAvailable();
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@@ -1125,6 +1193,20 @@ mymain(void)
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         ret = -1;
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     cleanupFakeFS(fakerootdir);
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+    fakerootdir = initFakeFS("legacy", "systemd-legacy");
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+    if (virTestRun("New cgroup for self (systemd-legacy)",
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+                   testCgroupNewForSelfSystemdLegacy, NULL) < 0) {
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+        ret = -1;
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+    }
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+    cleanupFakeFS(fakerootdir);
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+
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+    fakerootdir = initFakeFS("unified", "systemd-unified");
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+    if (virTestRun("New cgroup for self (systemd-unified)",
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+                   testCgroupNewForSelfSystemdUnified, NULL) < 0) {
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+        ret = -1;
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+    }
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+    cleanupFakeFS(fakerootdir);
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+
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     return ret == 0 ? EXIT_SUCCESS : EXIT_FAILURE;
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 }
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-- 
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2.30.0
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