Add support for shm-size.

Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>

Closes: #206
Approved by: TomSweeneyRedHat

5 files changed, 28 insertions, 7 deletions

diff --git a/cmd/podman/common.go b/cmd/podman/common.go
index e3997539a..e0ef43782 100644
--- a/cmd/podman/common.go
+++ b/cmd/podman/common.go
@@ -377,7 +377,8 @@ var createFlags = []cli.Flag{
 	},
 	cli.StringFlag{
 		Name:  "shm-size",
-		Usage: "Size of `/dev/shm`. The format is `<number><unit>`. default is 64 MB",
+		Usage: "Size of `/dev/shm`. The format is `<number><unit>`.",
+		Value: "65536k",
 	},
 	cli.BoolFlag{
 		Name:  "sig-proxy",
diff --git a/cmd/podman/create.go b/cmd/podman/create.go
index bb9a31467..ce06ac51b 100644
--- a/cmd/podman/create.go
+++ b/cmd/podman/create.go
@@ -62,7 +62,7 @@ type createResourceConfig struct {
 	MemorySwappiness  int      // memory-swappiness
 	OomScoreAdj       int      //oom-score-adj
 	PidsLimit         int64    // pids-limit
-	ShmSize           string
+	ShmSize           int64
 	Ulimit            []string //ulimit
 }
 
@@ -179,6 +179,7 @@ func createCmd(c *cli.Context) error {
 	options = append(options, libpod.WithLabels(createConfig.Labels))
 	options = append(options, libpod.WithUser(createConfig.User))
 	options = append(options, libpod.WithShmDir(createConfig.ShmDir))
+	options = append(options, libpod.WithShmSize(createConfig.Resources.ShmSize))
 	ctr, err := runtime.NewContainer(runtimeSpec, options...)
 	if err != nil {
 		return err
@@ -524,6 +525,12 @@ func parseCreateOpts(c *cli.Context, runtime *libpod.Runtime) (*createConfig, er
 		return nil, err
 	}
 
+	// SHM SIze
+	shmSize, err := units.FromHumanSize(c.String("shm-size"))
+	if err != nil {
+		return nil, errors.Wrapf(err, "unable to translate --shm-size")
+	}
+
 	config := &createConfig{
 		Runtime:        runtime,
 		CapAdd:         c.StringSlice("cap-add"),
@@ -580,7 +587,7 @@ func parseCreateOpts(c *cli.Context, runtime *libpod.Runtime) (*createConfig, er
 			DeviceWriteBps:    c.StringSlice("device-write-bps"),
 			DeviceWriteIOps:   c.StringSlice("device-write-iops"),
 			DisableOomKiller:  c.Bool("oom-kill-disable"),
-			ShmSize:           c.String("shm-size"),
+			ShmSize:           shmSize,
 			Memory:            memoryLimit,
 			MemoryReservation: memoryReservation,
 			MemorySwap:        memorySwap,
diff --git a/cmd/podman/inspect.go b/cmd/podman/inspect.go
index dc5810492..5e9fc53bb 100644
--- a/cmd/podman/inspect.go
+++ b/cmd/podman/inspect.go
@@ -320,7 +320,7 @@ type HostConfig struct {
 	SecurityOpt          []string                    `json:"SecurityOpt"`
 	UTSMode              string                      `json:"UTSMode"`
 	UsernsMode           string                      `json:"UsernsMode"`
-	ShmSize              string                      `json:"ShmSize"`
+	ShmSize              int64                       `json:"ShmSize"`
 	Runtime              string                      `json:"Runtime"`
 	ConsoleSize          *specs.Box                  `json:"ConsoleSize"`
 	Isolation            string                      `json:"Isolation"` //TODO
diff --git a/cmd/podman/run.go b/cmd/podman/run.go
index 45a428f39..07af4a6a2 100644
--- a/cmd/podman/run.go
+++ b/cmd/podman/run.go
@@ -56,6 +56,7 @@ func runCmd(c *cli.Context) error {
 	options = append(options, libpod.WithLabels(createConfig.Labels))
 	options = append(options, libpod.WithUser(createConfig.User))
 	options = append(options, libpod.WithShmDir(createConfig.ShmDir))
+	options = append(options, libpod.WithShmSize(createConfig.Resources.ShmSize))
 	ctr, err := runtime.NewContainer(runtimeSpec, options...)
 	if err != nil {
 		return err
diff --git a/cmd/podman/spec.go b/cmd/podman/spec.go
index 342b80d9e..d630b2f50 100644
--- a/cmd/podman/spec.go
+++ b/cmd/podman/spec.go
@@ -189,7 +189,13 @@ func addDevice(g *generate.Generator, device string) error {
 // Parses information needed to create a container into an OCI runtime spec
 func createConfigToOCISpec(config *createConfig) (*spec.Spec, error) {
 	g := generate.New()
-	g.AddCgroupsMount("ro")
+	cgroupMnt := spec.Mount{
+		Destination: "/sys/fs/cgroup",
+		Type:        "cgroup",
+		Source:      "cgroup",
+		Options:     []string{"nosuid", "noexec", "nodev", "relatime", "ro"},
+	}
+	g.AddMount(cgroupMnt)
 	g.SetProcessCwd(config.WorkDir)
 	g.SetProcessArgs(config.Command)
 	g.SetProcessTerminal(config.Tty)
@@ -273,6 +279,7 @@ func createConfigToOCISpec(config *createConfig) (*spec.Spec, error) {
 	}
 
 	for _, i := range config.Tmpfs {
+		// Default options if nothing passed
 		options := []string{"rw", "noexec", "nosuid", "nodev", "size=65536k"}
 		spliti := strings.SplitN(i, ":", 2)
 		if len(spliti) > 1 {
@@ -281,8 +288,13 @@ func createConfigToOCISpec(config *createConfig) (*spec.Spec, error) {
 			}
 			options = strings.Split(spliti[1], ",")
 		}
-		// Default options if nothing passed
-		g.AddTmpfsMount(spliti[0], append(options, "tmpcopyup"))
+		tmpfsMnt := spec.Mount{
+			Destination: spliti[0],
+			Type:        "tmpfs",
+			Source:      "tmpfs",
+			Options:     append(options, "tmpcopyup"),
+		}
+		g.AddMount(tmpfsMnt)
 	}
 
 	for name, val := range config.Env {