Merge pull request opencontainers#185 from wking/set-oom_score_adj

[1.0.0.rc1] support setting oom_score_adj

Author: Mrunal Patel

cmd/ocitools/generate.go

@@ -58,6 +58,7 @@ var generateFlags = []cli.Flag{
 	cli.StringSliceFlag{Name: "seccomp-errno", Usage: "specifies syscalls to be added to list that returns an error"},
 	cli.StringFlag{Name: "template", Usage: "base template to use for creating the configuration"},
 	cli.StringSliceFlag{Name: "label", Usage: "add annotations to the configuration e.g. key=value"},
+	cli.IntFlag{Name: "oom-score-adj", Usage: "oom_score_adj for the container"},
 }
 
 var generateCommand = cli.Command{
@@ -319,6 +320,10 @@ func setupSpec(g *generate.Generator, context *cli.Context) error {
 		g.AddLinuxGIDMapping(hid, cid, size)
 	}
 
+	if context.IsSet("oom-score-adj") {
+		g.SetLinuxResourcesOOMScoreAdj(context.Int("oom-score-adj"))
+	}
+
 	var sd string
 	var sa, ss []string
 

generate/generate.go

@@ -358,6 +358,12 @@ func (g *Generator) SetLinuxMountLabel(label string) {
 	g.spec.Linux.MountLabel = label
 }
 
+// SetLinuxResourcesOOMScoreAdj sets g.spec.Linux.Resources.OOMScoreAdj.
+func (g *Generator) SetLinuxResourcesOOMScoreAdj(adj int) {
+	g.initSpecLinuxResources()
+	g.spec.Linux.Resources.OOMScoreAdj = &adj
+}
+
 // SetLinuxResourcesCPUShares sets g.spec.Linux.Resources.CPU.Shares.
 func (g *Generator) SetLinuxResourcesCPUShares(shares uint64) {
 	g.initSpecLinuxResourcesCPU()

man/ocitools-generate.1.md

@@ -117,6 +117,9 @@ inside of the container.
   using tools like setuid apps.  It is a good idea to run unprivileged
   containers with this flag.
 
+**--oom-score-adj**=adj
+  Specifies oom_score_adj for the container.
+
 **--output**=PATH
   Instead of writing the configuration JSON to stdout, write it to a
   file at *PATH* (overwriting the existing content if a file already