distro: add root filesystem support

internal/distro/fedora33/distro.go

@@ -289,6 +289,23 @@ func (t *imageType) pipeline(c *blueprint.Customizations, options distro.ImageOp
 		return nil, fmt.Errorf("kernel boot parameter customizations are not supported for ostree types")
 	}
 
+	mountpoints := c.GetFilesystems()
+
+	if mountpoints != nil && t.rpmOstree {
+		return nil, fmt.Errorf("Custom mountpoints are not supported for ostree types")
+	}
+
+	invalidMountpoints := []string{}
+	for _, m := range mountpoints {
+		if m.Mountpoint != "/" {
+			invalidMountpoints = append(invalidMountpoints, m.Mountpoint)
+		}
+	}
+
+	if len(invalidMountpoints) > 0 {
+		return nil, fmt.Errorf("The following custom mountpoints are not supported %+q", invalidMountpoints)
+	}
+
 	p := &osbuild.Pipeline{}
 	p.SetBuild(t.buildPipeline(repos, *t.arch, buildPackageSpecs), "org.osbuild.fedora33")
 

internal/distro/rhel8/distro.go

@@ -288,6 +288,26 @@ func (t *imageType) pipeline(c *blueprint.Customizations, options distro.ImageOp
 		return nil, fmt.Errorf("kernel boot parameter customizations are not supported for ostree types")
 	}
 
+	mountpoints := c.GetFilesystems()
+
+	if mountpoints != nil && t.rpmOstree {
+		return nil, fmt.Errorf("Custom mountpoints are not supported for ostree types")
+	}
+
+	// create a slice for storing
+	// invalid mountpoints in order to return
+	// a detailed message
+	invalidMountpoints := []string{}
+	for _, m := range mountpoints {
+		if m.Mountpoint != "/" {
+			invalidMountpoints = append(invalidMountpoints, m.Mountpoint)
+		}
+	}
+
+	if len(invalidMountpoints) > 0 {
+		return nil, fmt.Errorf("The following custom mountpoints are not supported %+q", invalidMountpoints)
+	}
+
 	p := &osbuild.Pipeline{}
 	p.SetBuild(t.buildPipeline(repos, *t.arch, buildPackageSpecs), "org.osbuild.rhel82")
 

internal/distro/rhel84/distro.go

@@ -317,6 +317,23 @@ func (t *imageType) pipeline(c *blueprint.Customizations, options distro.ImageOp
 		return nil, fmt.Errorf("kernel boot parameter customizations are not supported for ostree types")
 	}
 
+	mountpoints := c.GetFilesystems()
+
+	if mountpoints != nil && t.rpmOstree {
+		return nil, fmt.Errorf("Custom mountpoints are not supported for ostree types")
+	}
+
+	invalidMountpoints := []string{}
+	for _, m := range mountpoints {
+		if m.Mountpoint != "/" {
+			invalidMountpoints = append(invalidMountpoints, m.Mountpoint)
+		}
+	}
+
+	if len(invalidMountpoints) > 0 {
+		return nil, fmt.Errorf("The following custom mountpoints are not supported %+q", invalidMountpoints)
+	}
+
 	var pt *disk.PartitionTable
 	if t.partitionTableGenerator != nil {
 		table := t.partitionTableGenerator(options, t.arch, rng)

internal/distro/rhel84/distro_v2.go

@@ -206,6 +206,23 @@ func (t *imageTypeS2) pipelines(customizations *blueprint.Customizations, option
 		return nil, fmt.Errorf("kernel boot parameter customizations are not supported for ostree types")
 	}
 
+	mountpoints := customizations.GetFilesystems()
+
+	if mountpoints != nil && t.rpmOstree {
+		return nil, fmt.Errorf("Custom mountpoints are not supported for ostree types")
+	}
+
+	invalidMountpoints := []string{}
+	for _, m := range mountpoints {
+		if m.Mountpoint != "/" {
+			invalidMountpoints = append(invalidMountpoints, m.Mountpoint)
+		}
+	}
+
+	if len(invalidMountpoints) > 0 {
+		return nil, fmt.Errorf("The following custom mountpoints are not supported %+q", invalidMountpoints)
+	}
+
 	pipelines := make([]osbuild.Pipeline, 0)
 
 	pipelines = append(pipelines, *t.buildPipeline(repos, packageSetSpecs["build-packages"]))

internal/distro/rhel85/distro.go

@@ -368,6 +368,24 @@ func (t *imageType) checkOptions(customizations *blueprint.Customizations, optio
 		return fmt.Errorf("kernel boot parameter customizations are not supported for ostree types")
 	}
 
+	mountpoints := customizations.GetFilesystems()
+
+	if mountpoints != nil && t.rpmOstree {
+		return fmt.Errorf("Custom mountpoints are not supported for ostree types")
+	}
+
+	// only allow root mountpoint for the time-being
+	invalidMountpoints := []string{}
+	for _, m := range mountpoints {
+		if m.Mountpoint != "/" {
+			invalidMountpoints = append(invalidMountpoints, m.Mountpoint)
+		}
+	}
+
+	if len(invalidMountpoints) > 0 {
+		return fmt.Errorf("The following custom mountpoints are not supported %+q", invalidMountpoints)
+	}
+
 	return nil
 }
 

internal/distro/rhel90/distro.go

@@ -288,6 +288,21 @@ func sources(packages []rpmmd.PackageSpec) *osbuild.Sources {
 }
 
 func (t *imageType) pipeline(c *blueprint.Customizations, options distro.ImageOptions, repos []rpmmd.RepoConfig, packageSpecs, buildPackageSpecs []rpmmd.PackageSpec, rng *rand.Rand) (*osbuild.Pipeline, error) {
+
+	mountpoints := c.GetFilesystems()
+
+	// only allow root mountpoint for the time-being
+	invalidMountpoints := []string{}
+	for _, m := range mountpoints {
+		if m.Mountpoint != "/" {
+			invalidMountpoints = append(invalidMountpoints, m.Mountpoint)
+		}
+	}
+
+	if len(invalidMountpoints) > 0 {
+		return nil, fmt.Errorf("The following custom mountpoints are not supported %+q", invalidMountpoints)
+	}
+
 	var pt *disk.PartitionTable
 	if t.partitionTableGenerator != nil {
 		table := t.partitionTableGenerator(options, t.arch, rng)