Add support for mount options to API

When creating containers the specialized mount options where not
populated via the API.

Fixes: containers#10831
Signed-off-by: Jhon Honce <jhonce@redhat.com>

cmd/podman/common/create_opts.go

@@ -16,6 +16,7 @@ import (
 	"github.com/containers/podman/v3/pkg/domain/entities"
 	"github.com/containers/podman/v3/pkg/rootless"
 	"github.com/containers/podman/v3/pkg/specgen"
+	"github.com/docker/docker/api/types/mount"
 	"github.com/pkg/errors"
 )
 
@@ -210,18 +211,30 @@ func ContainerCreateToContainerCLIOpts(cc handlers.CreateContainerConfig, rtc *c
 		expose = append(expose, fmt.Sprintf("%s/%s", p.Port(), p.Proto()))
 	}
 
-	// mounts type=tmpfs/bind,source=,dest=,opt=val
-	// TODO options
+	// mounts type=tmpfs/bind,source=...,target=...=,opt=val
 	mounts := make([]string, 0, len(cc.HostConfig.Mounts))
+	var builder strings.Builder
 	for _, m := range cc.HostConfig.Mounts {
-		mount := fmt.Sprintf("type=%s", m.Type)
-		if len(m.Source) > 0 {
-			mount += fmt.Sprintf(",source=%s", m.Source)
+		addField(&builder, "type", string(m.Type))
+		addField(&builder, "source", m.Source)
+		addField(&builder, "target", m.Target)
+		addField(&builder, "ro", strconv.FormatBool(m.ReadOnly))
+		addField(&builder, "consistency", string(m.Consistency))
+
+		// Map any specialized mount options that intersect between *Options and cli options
+		switch m.Type {
+		case mount.TypeBind:
+			addField(&builder, "bind-propagation", string(m.BindOptions.Propagation))
+			addField(&builder, "bind-nonrecursive", strconv.FormatBool(m.BindOptions.NonRecursive))
+		case mount.TypeTmpfs:
+			addField(&builder, "tmpfs-size", strconv.FormatInt(m.TmpfsOptions.SizeBytes, 10))
+			addField(&builder, "tmpfs-mode", strconv.FormatUint(uint64(m.TmpfsOptions.Mode), 10))
+		case mount.TypeVolume:
+			// All current VolumeOpts are handled above
+			// See vendor/github.com/containers/common/pkg/parse/parse.go:ValidateVolumeOpts()
 		}
-		if len(m.Target) > 0 {
-			mount += fmt.Sprintf(",dst=%s", m.Target)
-		}
-		mounts = append(mounts, mount)
+		mounts = append(mounts, builder.String())
+		builder.Reset()
 	}
 
 	// dns
@@ -622,3 +635,18 @@ func logDriver() string {
 	}
 	return ""
 }
+
+// addField is a helper function to populate mount options
+func addField(b *strings.Builder, name string, value string) {
+	if value == "" {
+		return
+	}
+
+	if b.Len() > 0 {
+		b.WriteRune(',')
+	}
+	b.WriteString(name)
+	b.WriteRune('=')
+	b.WriteString(value)
+
+}

cmd/podman/common/volumes.go

@@ -620,9 +620,9 @@ func getTmpfsMounts(tmpfsFlag []string) (map[string]spec.Mount, error) {
 
 		mount := spec.Mount{
 			Destination: filepath.Clean(destPath),
-			Type:        string(define.TypeTmpfs),
+			Type:        define.TypeTmpfs,
 			Options:     options,
-			Source:      string(define.TypeTmpfs),
+			Source:      define.TypeTmpfs,
 		}
 		m[destPath] = mount
 	}

pkg/api/handlers/compat/containers_create.go

@@ -81,7 +81,8 @@ func CreateContainer(w http.ResponseWriter, r *http.Request) {
 
 	sg := specgen.NewSpecGenerator(imgNameOrID, cliOpts.RootFS)
 	if err := common.FillOutSpecGen(sg, cliOpts, args); err != nil {
-		utils.Error(w, "Something went wrong.", http.StatusInternalServerError, errors.Wrap(err, "fill out specgen"))
+		msg := "failed to translate options to specgen"
+		utils.Error(w, msg, http.StatusInternalServerError, errors.Wrap(err, msg))
 		return
 	}
 
@@ -95,5 +96,6 @@ func CreateContainer(w http.ResponseWriter, r *http.Request) {
 		ID:       report.Id,
 		Warnings: []string{},
 	}
+
 	utils.WriteResponse(w, http.StatusCreated, createResponse)
 }

test/apiv2/20-containers.at

@@ -366,4 +366,12 @@ t GET containers/$cid/json 200 \
   .Config.Healthcheck.Timeout=30000000000 \
   .Config.Healthcheck.Retries=3
 
+# compat api: Test for mount options support
+payload='{"Mounts":[{"Type":"tmpfs","Target":"/mnt/scratch","TmpfsOptions":{"SizeBytes":1024,"Mode":755}}]}'
+t POST containers/create Image=$IMAGE HostConfig="$payload" 201 .Id~[0-9a-f]\\{64\\}
+cid=$(jq -r '.Id' <<<"$output")
+t GET containers/$cid/json 200 \
+    .HostConfig.Tmpfs['"/mnt/scratch"']~.*size=1024.* \
+    .HostConfig.Tmpfs['"/mnt/scratch"']~.*mode=755.*
+
 t DELETE containers/$cid?v=true 204

test/apiv2/test-apiv2

@@ -327,7 +327,8 @@ function start_service() {
         die "Cannot start service on non-localhost ($HOST)"
     fi
 
-    $PODMAN_BIN --root $WORKDIR/server_root system service \
+    $PODMAN_BIN --root $WORKDIR/server_root --syslog=true \
+                system service \
                 --time 15 \
                 tcp:127.0.0.1:$PORT \
         &> $WORKDIR/server.log &