[libvirt] [PATCH 20/47] vircgroup: extract virCgroupV1SetOwner

[Pavel Hrdina]

Signed-off-by: Pavel Hrdina <phrdina at redhat.com>
---
 src/util/vircgroup.c        | 54 +-----------------------------
 src/util/vircgroupbackend.h |  7 ++++
 src/util/vircgroupv1.c      | 65 +++++++++++++++++++++++++++++++++++++
 3 files changed, 73 insertions(+), 53 deletions(-)

diff --git a/src/util/vircgroup.c b/src/util/vircgroup.c
index 29faf5fb2c..479a2bf664 100644
--- a/src/util/vircgroup.c
+++ b/src/util/vircgroup.c
@@ -3284,59 +3284,7 @@ int virCgroupSetOwner(virCgroupPtr cgroup,
                       gid_t gid,
                       int controllers)
 {
-    int ret = -1;
-    size_t i;
-    DIR *dh = NULL;
-    int direrr;
-
-    for (i = 0; i < VIR_CGROUP_CONTROLLER_LAST; i++) {
-        VIR_AUTOFREE(char *) base = NULL;
-        struct dirent *de;
-
-        if (!((1 << i) & controllers))
-            continue;
-
-        if (!cgroup->controllers[i].mountPoint)
-            continue;
-
-        if (virAsprintf(&base, "%s%s", cgroup->controllers[i].mountPoint,
-                        cgroup->controllers[i].placement) < 0)
-            goto cleanup;
-
-        if (virDirOpen(&dh, base) < 0)
-            goto cleanup;
-
-        while ((direrr = virDirRead(dh, &de, base)) > 0) {
-            VIR_AUTOFREE(char *) entry = NULL;
-
-            if (virAsprintf(&entry, "%s/%s", base, de->d_name) < 0)
-                goto cleanup;
-
-            if (chown(entry, uid, gid) < 0) {
-                virReportSystemError(errno,
-                                     _("cannot chown '%s' to (%u, %u)"),
-                                     entry, uid, gid);
-                goto cleanup;
-            }
-        }
-        if (direrr < 0)
-            goto cleanup;
-
-        if (chown(base, uid, gid) < 0) {
-            virReportSystemError(errno,
-                                 _("cannot chown '%s' to (%u, %u)"),
-                                 base, uid, gid);
-            goto cleanup;
-        }
-
-        VIR_DIR_CLOSE(dh);
-    }
-
-    ret = 0;
-
- cleanup:
-    VIR_DIR_CLOSE(dh);
-    return ret;
+    return cgroup->backend->setOwner(cgroup, uid, gid, controllers);
 }
 
 
diff --git a/src/util/vircgroupbackend.h b/src/util/vircgroupbackend.h
index 70deb47461..4538654068 100644
--- a/src/util/vircgroupbackend.h
+++ b/src/util/vircgroupbackend.h
@@ -123,6 +123,12 @@ typedef int
                         const char *oldroot,
                         const char *mountopts);
 
+typedef int
+(*virCgroupSetOwnerCB)(virCgroupPtr cgroup,
+                       uid_t uid,
+                       gid_t gid,
+                       int controllers);
+
 struct _virCgroupBackend {
     virCgroupBackendType type;
 
@@ -144,6 +150,7 @@ struct _virCgroupBackend {
     virCgroupAddTaskCB addTask;
     virCgroupHasEmptyTasksCB hasEmptyTasks;
     virCgroupBindMountCB bindMount;
+    virCgroupSetOwnerCB setOwner;
 };
 typedef struct _virCgroupBackend virCgroupBackend;
 typedef virCgroupBackend *virCgroupBackendPtr;
diff --git a/src/util/vircgroupv1.c b/src/util/vircgroupv1.c
index 0514ba392d..d74fc8ff96 100644
--- a/src/util/vircgroupv1.c
+++ b/src/util/vircgroupv1.c
@@ -866,6 +866,70 @@ virCgroupV1BindMount(virCgroupPtr group,
 }
 
 
+static int
+virCgroupV1SetOwner(virCgroupPtr cgroup,
+                    uid_t uid,
+                    gid_t gid,
+                    int controllers)
+{
+    int ret = -1;
+    size_t i;
+    VIR_AUTOFREE(char *) base = NULL;
+    VIR_AUTOFREE(char *) entry = NULL;
+    DIR *dh = NULL;
+    int direrr;
+
+    for (i = 0; i < VIR_CGROUP_CONTROLLER_LAST; i++) {
+        struct dirent *de;
+
+        if (!((1 << i) & controllers))
+            continue;
+
+        if (!cgroup->controllers[i].mountPoint)
+            continue;
+
+        if (virAsprintf(&base, "%s%s", cgroup->controllers[i].mountPoint,
+                        cgroup->controllers[i].placement) < 0)
+            goto cleanup;
+
+        if (virDirOpen(&dh, base) < 0)
+            goto cleanup;
+
+        while ((direrr = virDirRead(dh, &de, base)) > 0) {
+            if (virAsprintf(&entry, "%s/%s", base, de->d_name) < 0)
+                goto cleanup;
+
+            if (chown(entry, uid, gid) < 0) {
+                virReportSystemError(errno,
+                                     _("cannot chown '%s' to (%u, %u)"),
+                                     entry, uid, gid);
+                goto cleanup;
+            }
+
+            VIR_FREE(entry);
+        }
+        if (direrr < 0)
+            goto cleanup;
+
+        if (chown(base, uid, gid) < 0) {
+            virReportSystemError(errno,
+                                 _("cannot chown '%s' to (%u, %u)"),
+                                 base, uid, gid);
+            goto cleanup;
+        }
+
+        VIR_FREE(base);
+        VIR_DIR_CLOSE(dh);
+    }
+
+    ret = 0;
+
+ cleanup:
+    VIR_DIR_CLOSE(dh);
+    return ret;
+}
+
+
 virCgroupBackend virCgroupV1Backend = {
     .type = VIR_CGROUP_BACKEND_TYPE_V1,
 
@@ -886,6 +950,7 @@ virCgroupBackend virCgroupV1Backend = {
     .addTask = virCgroupV1AddTask,
     .hasEmptyTasks = virCgroupV1HasEmptyTasks,
     .bindMount = virCgroupV1BindMount,
+    .setOwner = virCgroupV1SetOwner,
 };
 
 
-- 
2.17.1