Alter varlink API for ListContainerMounts to return a map

We want to return a map of containermounts where the key is container
id and it points to the mountpath.

Issue #2215

Signed-off-by: baude <bbaude@redhat.com>

3 files changed, 15 insertions, 19 deletions

diff --git a/API.md b/API.md
index fc14f1035..482ef68e1 100755
--- a/API.md
+++ b/API.md
@@ -81,7 +81,7 @@ in the [API.md](https://github.com/containers/libpod/blob/master/API.md) file in
 
 [func ListContainerChanges(name: string) ContainerChanges](#ListContainerChanges)
 
-[func ListContainerMounts() []string](#ListContainerMounts)
+[func ListContainerMounts() map[string]](#ListContainerMounts)
 
 [func ListContainerPorts(name: string) NotImplemented](#ListContainerPorts)
 
@@ -643,19 +643,17 @@ its base image. It returns a struct of changed, deleted, and added path names.
 ### <a name="ListContainerMounts"></a>func ListContainerMounts
 <div style="background-color: #E8E8E8; padding: 15px; margin: 10px; border-radius: 10px;">
 
-method ListContainerMounts() [[]string](#[]string)</div>
+method ListContainerMounts() [map[string]](#map[string])</div>
 ListContainerMounts gathers all the mounted container mount points and returns them as an array
 of strings
 #### Example
 ~~~
-$ varlink call -m unix:/run/podman/io.podman/io.podman.ListContainerMounts
+$ varlink call unix:/run/podman/io.podman/io.podman.ListContainerMounts
 {
-  "mounts": [
-    "/var/lib/containers/storage/overlay/b215fb622c65ba3b06c6d2341be80b76a9de7ae415ce419e65228873d4f0dcc8/merged",
-    "/var/lib/containers/storage/overlay/5eaf806073f79c0ed9a695180ad598e34f963f7407da1d2ccf3560bdab49b26f/merged",
-    "/var/lib/containers/storage/overlay/1ecb6b1dbb251737c7a24a31869096839c3719d8b250bf075f75172ddcc701e1/merged",
-    "/var/lib/containers/storage/overlay/7137b28a3c422165fe920cba851f2f8da271c6b5908672c451ebda03ad3919e2/merged"
-  ]
+  "mounts": {
+    "04e4c255269ed2545e7f8bd1395a75f7949c50c223415c00c1d54bfa20f3b3d9": "/var/lib/containers/storage/overlay/a078925828f57e20467ca31cfca8a849210d21ec7e5757332b72b6924f441c17/merged",
+    "1d58c319f9e881a644a5122ff84419dccf6d138f744469281446ab243ef38924": "/var/lib/containers/storage/overlay/948fcf93f8cb932f0f03fd52e3180a58627d547192ffe3b88e0013b98ddcd0d2/merged"
+  }
 }
 ~~~
 ### <a name="ListContainerPorts"></a>func ListContainerPorts
diff --git a/cmd/podman/varlink/io.podman.varlink b/cmd/podman/varlink/io.podman.varlink
index 86c3eb7ff..244a8eaf5 100644
--- a/cmd/podman/varlink/io.podman.varlink
+++ b/cmd/podman/varlink/io.podman.varlink
@@ -987,17 +987,15 @@ method ContainerRunlabel(runlabel: Runlabel) -> ()
 # of strings
 # #### Example
 # ~~~
-# $ varlink call -m unix:/run/podman/io.podman/io.podman.ListContainerMounts
+# $ varlink call unix:/run/podman/io.podman/io.podman.ListContainerMounts
 # {
-#   "mounts": [
-#     "/var/lib/containers/storage/overlay/b215fb622c65ba3b06c6d2341be80b76a9de7ae415ce419e65228873d4f0dcc8/merged",
-#     "/var/lib/containers/storage/overlay/5eaf806073f79c0ed9a695180ad598e34f963f7407da1d2ccf3560bdab49b26f/merged",
-#     "/var/lib/containers/storage/overlay/1ecb6b1dbb251737c7a24a31869096839c3719d8b250bf075f75172ddcc701e1/merged",
-#     "/var/lib/containers/storage/overlay/7137b28a3c422165fe920cba851f2f8da271c6b5908672c451ebda03ad3919e2/merged"
-#   ]
+#   "mounts": {
+#     "04e4c255269ed2545e7f8bd1395a75f7949c50c223415c00c1d54bfa20f3b3d9": "/var/lib/containers/storage/overlay/a078925828f57e20467ca31cfca8a849210d21ec7e5757332b72b6924f441c17/merged",
+#     "1d58c319f9e881a644a5122ff84419dccf6d138f744469281446ab243ef38924": "/var/lib/containers/storage/overlay/948fcf93f8cb932f0f03fd52e3180a58627d547192ffe3b88e0013b98ddcd0d2/merged"
+#   }
 # }
 # ~~~
-method ListContainerMounts() -> (mounts: []string)
+method ListContainerMounts() -> (mounts: [string]string)
 
 # MountContainer mounts a container by name or full/partial ID.  Upon a successful mount, the destination
 # mount is returned as a string.
diff --git a/pkg/varlinkapi/mount.go b/pkg/varlinkapi/mount.go
index 84e6b2709..3b4fe87e3 100644
--- a/pkg/varlinkapi/mount.go
+++ b/pkg/varlinkapi/mount.go
@@ -6,7 +6,7 @@ import (
 
 // ListContainerMounts ...
 func (i *LibpodAPI) ListContainerMounts(call iopodman.VarlinkCall) error {
-	var mounts []string
+	mounts := make(map[string]string)
 	allContainers, err := i.Runtime.GetAllContainers()
 	if err != nil {
 		return call.ReplyErrorOccurred(err.Error())
@@ -17,7 +17,7 @@ func (i *LibpodAPI) ListContainerMounts(call iopodman.VarlinkCall) error {
 			return call.ReplyErrorOccurred(err.Error())
 		}
 		if mounted {
-			mounts = append(mounts, mountPoint)
+			mounts[container.ID()] = mountPoint
 		}
 	}
 	return call.ReplyListContainerMounts(mounts)