Re: [libvirt PATCH v3 5/5] qemu: implement support for Fibre Channel VMID

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On Tue, Aug 17, 2021 at 11:26:42AM +0200, Pavel Hrdina wrote:
Based on kernel commit messages the interface is

   /sys/class/fc/fc_udev_device/appid_store

where we need to write the following string "$INODE:$APPID".

$INODE is the VM root cgroup inode in hexadecimal and $APPID is user
provided string that will be attached to each FC frame for the VM
within the cgroup identified by inode and has limit 128 bytes.

Signed-off-by: Pavel Hrdina <phrdina@xxxxxxxxxx>
---
src/qemu/qemu_cgroup.c | 27 +++++++++++++++++++++++++++
1 file changed, 27 insertions(+)

diff --git a/src/qemu/qemu_cgroup.c b/src/qemu/qemu_cgroup.c
index f2d99abcfa..cb83cc8e3e 100644
--- a/src/qemu/qemu_cgroup.c
+++ b/src/qemu/qemu_cgroup.c
@@ -904,6 +904,30 @@ qemuSetupCpuCgroup(virDomainObj *vm)
}


+static int
+qemuSetupCgroupAppid(virDomainObj *vm)
+{
+    qemuDomainObjPrivate *priv = vm->privateData;
+    int inode = virCgroupGetInode(priv->cgroup);

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