feat: add option to change ownership of dir/files to acct settings

When enabled, any new directories or files created through the
gateway will change ownership based on the account uid/gid.

Fixes #238.

cmd/versitygw/gateway_test.go

@@ -56,7 +56,7 @@ func initPosix(ctx context.Context) {
 		log.Fatalf("make temp directory: %v", err)
 	}
 
-	be, err := posix.New(tempdir)
+	be, err := posix.New(tempdir, posix.PosixOpts{})
 	if err != nil {
 		log.Fatalf("init posix: %v", err)
 	}

cmd/versitygw/posix.go

@@ -21,6 +21,10 @@ import (
 	"github.com/versity/versitygw/backend/posix"
 )
 
+var (
+	chownuid, chowngid bool
+)
+
 func posixCommand() *cli.Command {
 	return &cli.Command{
 		Name:  "posix",
@@ -36,6 +40,20 @@ bucket: mybucket
 object: a/b/c/myobject
 will be translated into the file /mnt/fs/gwroot/mybucket/a/b/c/myobject`,
 		Action: runPosix,
+		Flags: []cli.Flag{
+			&cli.BoolFlag{
+				Name:        "chuid",
+				Usage:       "chown newly created files and directories to client account UID",
+				EnvVars:     []string{"VGW_CHOWN_UID"},
+				Destination: &chownuid,
+			},
+			&cli.BoolFlag{
+				Name:        "chgid",
+				Usage:       "chown newly created files and directories to client account GID",
+				EnvVars:     []string{"VGW_CHOWN_GID"},
+				Destination: &chowngid,
+			},
+		},
 	}
 }
 
@@ -44,7 +62,10 @@ func runPosix(ctx *cli.Context) error {
 		return fmt.Errorf("no directory provided for operation")
 	}
 
-	be, err := posix.New(ctx.Args().Get(0))
+	be, err := posix.New(ctx.Args().Get(0), posix.PosixOpts{
+		ChownUID: chownuid,
+		ChownGID: chowngid,
+	})
 	if err != nil {
 		return fmt.Errorf("init posix: %v", err)
 	}

cmd/versitygw/scoutfs.go

@@ -51,6 +51,18 @@ move interfaces as well as support for tiered filesystems.`,
 				EnvVars:     []string{"VGW_SCOUTFS_GLACIER"},
 				Destination: &glacier,
 			},
+			&cli.BoolFlag{
+				Name:        "chuid",
+				Usage:       "chown newly created files and directories to client account UID",
+				EnvVars:     []string{"VGW_CHOWN_UID"},
+				Destination: &chownuid,
+			},
+			&cli.BoolFlag{
+				Name:        "chgid",
+				Usage:       "chown newly created files and directories to client account GID",
+				EnvVars:     []string{"VGW_CHOWN_GID"},
+				Destination: &chowngid,
+			},
 		},
 	}
 }
@@ -60,12 +72,12 @@ func runScoutfs(ctx *cli.Context) error {
 		return fmt.Errorf("no directory provided for operation")
 	}
 
-	var opts []scoutfs.Option
-	if glacier {
-		opts = append(opts, scoutfs.WithGlacierEmulation())
-	}
+	var opts scoutfs.ScoutfsOpts
+	opts.GlacierMode = glacier
+	opts.ChownUID = chownuid
+	opts.ChownGID = chowngid
 
-	be, err := scoutfs.New(ctx.Args().Get(0), opts...)
+	be, err := scoutfs.New(ctx.Args().Get(0), opts)
 	if err != nil {
 		return fmt.Errorf("init scoutfs: %v", err)
 	}