[PATCH v3 08/15] vircgroup: introduce virCgroupV2DeviceGetPerms

[Pavel Hrdina <phrdina@xxxxxxxxxx>]

Signed-off-by: Pavel Hrdina <phrdina@xxxxxxxxxx>
---
 src/libvirt_private.syms      |  1 +
 src/util/vircgroupv2devices.c | 34 ++++++++++++++++++++++++++++++++++
 src/util/vircgroupv2devices.h |  6 ++++++
 3 files changed, 41 insertions(+)

diff --git a/src/libvirt_private.syms b/src/libvirt_private.syms
index f42bdad9ef..469a1cdbe0 100644
--- a/src/libvirt_private.syms
+++ b/src/libvirt_private.syms
@@ -1657,6 +1657,7 @@ virCgroupV2DevicesAttachProg;
 virCgroupV2DevicesAvailable;
 virCgroupV2DevicesCreateProg;
 virCgroupV2DevicesDetectProg;
+virCgroupV2DevicesGetPerms;
 virCgroupV2DevicesPrepareProg;
 virCgroupV2DevicesRemoveProg;
 
diff --git a/src/util/vircgroupv2devices.c b/src/util/vircgroupv2devices.c
index 70e29b8470..0455ff6b24 100644
--- a/src/util/vircgroupv2devices.c
+++ b/src/util/vircgroupv2devices.c
@@ -570,6 +570,32 @@ virCgroupV2DevicesRemoveProg(virCgroupPtr group)
 
     return 0;
 }
+
+
+uint32_t
+virCgroupV2DevicesGetPerms(int perms,
+                           char type)
+{
+    uint32_t ret = 0;
+
+    if (perms & VIR_CGROUP_DEVICE_MKNOD)
+        ret |= BPF_DEVCG_ACC_MKNOD << 16;
+
+    if (perms & VIR_CGROUP_DEVICE_READ)
+        ret |= BPF_DEVCG_ACC_READ << 16;
+
+    if (perms & VIR_CGROUP_DEVICE_WRITE)
+        ret |= BPF_DEVCG_ACC_WRITE << 16;
+
+    if (type == 'b')
+        ret |= BPF_DEVCG_DEV_BLOCK;
+    else if (type == 'c')
+        ret |= BPF_DEVCG_DEV_CHAR;
+    else
+        ret |= BPF_DEVCG_DEV_BLOCK | BPF_DEVCG_DEV_CHAR;
+
+    return ret;
+}
 #else /* !HAVE_DECL_BPF_CGROUP_DEVICE */
 bool
 virCgroupV2DevicesAvailable(virCgroupPtr group ATTRIBUTE_UNUSED)
@@ -625,4 +651,12 @@ virCgroupV2DevicesRemoveProg(virCgroupPtr group ATTRIBUTE_UNUSED)
 {
     return 0;
 }
+
+
+uint32_t
+virCgroupV2DevicesGetPerms(int perms ATTRIBUTE_UNUSED,
+                           char type ATTRIBUTE_UNUSED)
+{
+    return 0;
+}
 #endif /* !HAVE_DECL_BPF_CGROUP_DEVICE */
diff --git a/src/util/vircgroupv2devices.h b/src/util/vircgroupv2devices.h
index ae02f9c334..cbfd9ae119 100644
--- a/src/util/vircgroupv2devices.h
+++ b/src/util/vircgroupv2devices.h
@@ -19,6 +19,8 @@
 #ifndef LIBVIRT_VIRCGROUPV2DEVICES_H
 # define LIBVIRT_VIRCGROUPV2DEVICES_H
 
+# include <sys/types.h>
+
 # include "vircgroup.h"
 
 bool
@@ -41,4 +43,8 @@ virCgroupV2DevicesPrepareProg(virCgroupPtr group);
 int
 virCgroupV2DevicesRemoveProg(virCgroupPtr group);
 
+uint32_t
+virCgroupV2DevicesGetPerms(int perms,
+                           char type);
+
 #endif /* LIBVIRT_VIRCGROUPV2DEVICES_H */
-- 
2.20.1

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