Add post create home hook for eos storage driver (cs3org#3234)

changelog/unreleased/post-create-home-hook-eos.md

@@ -0,0 +1,3 @@
+Enhancement: Add post create home hook for eos storage driver
+
+https://github.com/cs3org/reva/pull/3234

pkg/storage/utils/eosfs/config.go

@@ -144,6 +144,9 @@ type Config struct {
 	// revisions-related operations.
 	ImpersonateOwnerforRevisions bool `mapstructure:"impersonate_owner_for_revisions"`
 
+	// Whether to enable the post create home hook
+	EnablePostCreateHomeHook bool `mapstructure:"enable_post_create_home_hook"`
+
 	// HTTP connections to EOS: max number of idle conns
 	MaxIdleConns int `mapstructure:"max_idle_conns"`
 
@@ -168,4 +171,7 @@ type Config struct {
 	// TokenExpiry stores in seconds the time after which generated tokens will expire
 	// Default is 3600
 	TokenExpiry int
+
+	// Path of the script to run after an user home folder has been created
+	OnPostCreateHomeHook string `mapstructure:"on_post_create_home_hook"`
 }

pkg/storage/utils/eosfs/eosfs.go

@@ -25,6 +25,7 @@ import (
 	"io"
 	"net/url"
 	"os"
+	"os/exec"
 	"path"
 	"regexp"
 	"strconv"
@@ -1480,7 +1481,13 @@ func (fs *eosfs) createNominalHome(ctx context.Context) error {
 		return err
 	}
 
-	return err
+	if fs.conf.EnablePostCreateHomeHook {
+		if err := fs.runPostCreateHomeHook(ctx); err != nil {
+			return errors.Wrap(err, "eosfs: error running post create home hook")
+		}
+	}
+
+	return nil
 }
 
 func (fs *eosfs) CreateHome(ctx context.Context) error {
@@ -1499,6 +1506,11 @@ func (fs *eosfs) CreateHome(ctx context.Context) error {
 	return nil
 }
 
+func (fs *eosfs) runPostCreateHomeHook(ctx context.Context) error {
+	user := ctxpkg.ContextMustGetUser(ctx)
+	return exec.Command(fs.conf.OnPostCreateHomeHook, user.Username).Run()
+}
+
 func (fs *eosfs) createUserDir(ctx context.Context, u *userpb.User, path string, recursiveAttr bool) error {
 	rootAuth, err := fs.getRootAuth(ctx)
 	if err != nil {