replace pkg/errors

Signed-off-by: Zou Nengren <zouyee1989@gmail.com>

btrfs.go

@@ -28,13 +28,13 @@ static char* get_name_btrfs_ioctl_vol_args_v2(struct btrfs_ioctl_vol_args_v2* bt
 import "C"
 
 import (
+	"errors"
+	"fmt"
 	"os"
 	"path/filepath"
 	"sort"
 	"syscall"
 	"unsafe"
-
-	"github.com/pkg/errors"
 )
 
 // maxByteSliceSize is the smallest size that Go supports on various platforms.
@@ -99,7 +99,7 @@ func SubvolInfo(path string) (info Info, err error) {
 		return *info, nil
 	}
 
-	return info, errors.Errorf("%q not found", path)
+	return info, fmt.Errorf("%q not found", path)
 }
 
 func subvolMap(path string) (map[uint64]*Info, error) {
@@ -273,13 +273,13 @@ func SubvolCreate(path string) error {
 	args.fd = C.__s64(fp.Fd())
 
 	if len(name) > C.BTRFS_PATH_NAME_MAX {
-		return errors.Errorf("%q too long for subvolume", name)
+		return fmt.Errorf("%q too long for subvolume", name)
 	}
 	nameptr := (*[maxByteSliceSize]byte)(unsafe.Pointer(&args.name[0]))[:C.BTRFS_PATH_NAME_MAX:C.BTRFS_PATH_NAME_MAX]
 	copy(nameptr[:C.BTRFS_PATH_NAME_MAX], []byte(name))
 
 	if err := ioctl(fp.Fd(), C.BTRFS_IOC_SUBVOL_CREATE, uintptr(unsafe.Pointer(&args))); err != nil {
-		return errors.Wrap(err, "btrfs subvolume create failed")
+		return fmt.Errorf("btrfs subvolume create failed: %w", err)
 	}
 
 	return nil
@@ -292,13 +292,13 @@ func SubvolSnapshot(dst, src string, readonly bool) error {
 
 	dstfp, err := openSubvolDir(dstdir)
 	if err != nil {
-		return errors.Wrapf(err, "opening snapshot destination subvolume failed")
+		return fmt.Errorf("opening snapshot destination subvolume failed: %w", err)
 	}
 	defer dstfp.Close()
 
 	srcfp, err := openSubvolDir(src)
 	if err != nil {
-		return errors.Wrapf(err, "opening snapshot source subvolume failed")
+		return fmt.Errorf("opening snapshot source subvolume failed: %w", err)
 	}
 	defer srcfp.Close()
 
@@ -308,7 +308,7 @@ func SubvolSnapshot(dst, src string, readonly bool) error {
 	name := C.get_name_btrfs_ioctl_vol_args_v2(&args)
 
 	if len(dstname) > C.BTRFS_SUBVOL_NAME_MAX {
-		return errors.Errorf("%q too long for subvolume", dstname)
+		return fmt.Errorf("%q too long for subvolume", dstname)
 	}
 
 	nameptr := (*[maxByteSliceSize]byte)(unsafe.Pointer(name))[:C.BTRFS_SUBVOL_NAME_MAX:C.BTRFS_SUBVOL_NAME_MAX]
@@ -319,7 +319,7 @@ func SubvolSnapshot(dst, src string, readonly bool) error {
 	}
 
 	if err := ioctl(dstfp.Fd(), C.BTRFS_IOC_SNAP_CREATE_V2, uintptr(unsafe.Pointer(&args))); err != nil {
-		return errors.Wrapf(err, "snapshot create failed")
+		return fmt.Errorf("snapshot create failed: %w", err)
 	}
 
 	return nil
@@ -330,7 +330,7 @@ func SubvolDelete(path string) error {
 	dir, name := filepath.Split(path)
 	fp, err := openSubvolDir(dir)
 	if err != nil {
-		return errors.Wrapf(err, "failed opening %v", path)
+		return fmt.Errorf("failed opening %v: %w", path, err)
 	}
 	defer fp.Close()
 
@@ -341,7 +341,7 @@ func SubvolDelete(path string) error {
 				return nil
 			}
 
-			return errors.Wrapf(err, "failed walking subvolume %v", p)
+			return fmt.Errorf("failed walking subvolume %v: %w", p, err)
 		}
 
 		if !fi.IsDir() {
@@ -357,7 +357,7 @@ func SubvolDelete(path string) error {
 		}
 
 		if err := SubvolDelete(p); err != nil {
-			return errors.Wrapf(err, "recursive delete of %v failed", p)
+			return fmt.Errorf("recursive delete of %v failed: %w", p, err)
 		}
 
 		return filepath.SkipDir // children get walked by call above.
@@ -367,14 +367,14 @@ func SubvolDelete(path string) error {
 
 	var args C.struct_btrfs_ioctl_vol_args
 	if len(name) > C.BTRFS_SUBVOL_NAME_MAX {
-		return errors.Errorf("%q too long for subvolume", name)
+		return fmt.Errorf("%q too long for subvolume", name)
 	}
 
 	nameptr := (*[maxByteSliceSize]byte)(unsafe.Pointer(&args.name[0]))[:C.BTRFS_SUBVOL_NAME_MAX:C.BTRFS_SUBVOL_NAME_MAX]
 	copy(nameptr[:C.BTRFS_SUBVOL_NAME_MAX], []byte(name))
 
 	if err := ioctl(fp.Fd(), C.BTRFS_IOC_SNAP_DESTROY, uintptr(unsafe.Pointer(&args))); err != nil {
-		return errors.Wrapf(err, "failed removing subvolume %v", path)
+		return fmt.Errorf("failed removing subvolume %v: %w", path, err)
 	}
 
 	return nil
@@ -383,29 +383,29 @@ func SubvolDelete(path string) error {
 func openSubvolDir(path string) (*os.File, error) {
 	fp, err := os.Open(path)
 	if err != nil {
-		return nil, errors.Wrapf(err, "opening %v as subvolume failed", path)
+		return nil, fmt.Errorf("opening %v as subvolume failed: %w", path, err)
 	}
 
 	return fp, nil
 }
 
 func isStatfsSubvol(statfs *syscall.Statfs_t) error {
 	if int64(statfs.Type) != int64(C.BTRFS_SUPER_MAGIC) {
-		return errors.Errorf("not a btrfs filesystem")
+		return fmt.Errorf("not a btrfs filesystem")
 	}
 
 	return nil
 }
 
 func isFileInfoSubvol(fi os.FileInfo) error {
 	if !fi.IsDir() {
-		errors.Errorf("must be a directory")
+		return errors.New("must be a directory")
 	}
 
 	stat := fi.Sys().(*syscall.Stat_t)
 
 	if stat.Ino != C.BTRFS_FIRST_FREE_OBJECTID {
-		return errors.Errorf("incorrect inode type")
+		return fmt.Errorf("incorrect inode type")
 	}
 
 	return nil

go.mod

@@ -1,5 +1,3 @@
 module github.com/containerd/btrfs
 
-go 1.15
-
-require github.com/pkg/errors v0.9.1
+go 1.16

go.sum

@@ -1,2 +0,0 @@
-github.com/pkg/errors v0.9.1 h1:FEBLx1zS214owpjy7qsBeixbURkuhQAwrK5UwLGTwt4=
-github.com/pkg/errors v0.9.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=

helpers.go

@@ -30,8 +30,6 @@ import (
 	"os"
 	"strings"
 	"unsafe"
-
-	"github.com/pkg/errors"
 )
 
 func subvolID(fd uintptr) (uint64, error) {
@@ -95,7 +93,7 @@ func findMountPoint(path string) (string, error) {
 	}
 
 	if mount == "" {
-		return "", errors.Errorf("mount point of %v not found", path)
+		return "", fmt.Errorf("mount point of %v not found", path)
 	}
 
 	return mount, nil