fix: address lint with golangci-lint v1.60

pkg/sif/create.go

@@ -12,33 +12,47 @@ import (
 	"errors"
 	"fmt"
 	"io"
+	"math"
 	"os"
 	"time"
 
 	"github.com/google/uuid"
 )
 
+var errAlignmentOverflow = errors.New("integer overflow when calculating alignment")
+
 // nextAligned finds the next offset that satisfies alignment.
-func nextAligned(offset int64, alignment int) int64 {
+func nextAligned(offset int64, alignment int) (int64, error) {
 	align64 := uint64(alignment)
 	offset64 := uint64(offset)
 
-	if align64 != 0 && offset64%align64 != 0 {
-		offset64 = (offset64 & ^(align64 - 1)) + align64
+	if align64 <= 0 || offset64%align64 == 0 {
+		return offset, nil
 	}
 
-	return int64(offset64)
+	offset64 += (align64 - offset64%align64)
+
+	if offset64 > math.MaxInt64 {
+		return 0, errAlignmentOverflow
+	}
+
+	//nolint:gosec // Overflow handled above.
+	return int64(offset64), nil
 }
 
 // writeDataObjectAt writes the data object described by di to ws, using time t, recording details
 // in d. The object is written at the first position that satisfies the alignment requirements
 // described by di following offsetUnaligned.
 func writeDataObjectAt(ws io.WriteSeeker, offsetUnaligned int64, di DescriptorInput, t time.Time, d *rawDescriptor) error { //nolint:lll
-	offset, err := ws.Seek(nextAligned(offsetUnaligned, di.opts.alignment), io.SeekStart)
+	offset, err := nextAligned(offsetUnaligned, di.opts.alignment)
 	if err != nil {
 		return err
 	}
 
+	if _, err := ws.Seek(offset, io.SeekStart); err != nil {
+		return err
+	}
+
 	n, err := io.Copy(ws, di.r)
 	if err != nil {
 		return err
@@ -72,6 +86,7 @@ func (f *FileImage) calculatedDataSize() int64 {
 var (
 	errInsufficientCapacity = errors.New("insufficient descriptor capacity to add data object(s) to image")
 	errPrimaryPartition     = errors.New("image already contains a primary partition")
+	errObjectIDOverflow     = errors.New("object ID would overflow")
 )
 
 // writeDataObject writes the data object described by di to f, using time t, recording details in
@@ -81,6 +96,11 @@ func (f *FileImage) writeDataObject(i int, di DescriptorInput, t time.Time) erro
 		return errInsufficientCapacity
 	}
 
+	// We derive the ID from i, so make sure the ID will not overflow.
+	if i >= math.MaxInt32 {
+		return errObjectIDOverflow
+	}
+
 	// If this is a primary partition, verify there isn't another primary partition, and update the
 	// architecture in the global header.
 	if p, ok := di.opts.md.(partition); ok && p.Parttype == PartPrimSys {
@@ -92,7 +112,7 @@ func (f *FileImage) writeDataObject(i int, di DescriptorInput, t time.Time) erro
 	}
 
 	d := &f.rds[i]
-	d.ID = uint32(i) + 1
+	d.ID = uint32(i) + 1 //nolint:gosec // Overflow handled above.
 
 	f.h.DataSize = f.calculatedDataSize()
 

pkg/sif/create_test.go

@@ -1,4 +1,4 @@
-// Copyright (c) 2018-2023, Sylabs Inc. All rights reserved.
+// Copyright (c) 2018-2024, Sylabs Inc. All rights reserved.
 // This software is licensed under a 3-clause BSD license. Please consult the
 // LICENSE file distributed with the sources of this project regarding your
 // rights to use or distribute this software.
@@ -7,6 +7,7 @@ package sif
 
 import (
 	"errors"
+	"math"
 	"os"
 	"testing"
 	"time"
@@ -15,27 +16,34 @@ import (
 )
 
 func TestNextAligned(t *testing.T) {
-	cases := []struct {
-		name     string
-		offset   int64
-		align    int
-		expected int64
+	tests := []struct {
+		name       string
+		offset     int64
+		align      int
+		wantOffset int64
+		wantErr    error
 	}{
-		{name: "align 0 to 0", offset: 0, align: 0, expected: 0},
-		{name: "align 1 to 0", offset: 1, align: 0, expected: 1},
-		{name: "align 0 to 1024", offset: 0, align: 1024, expected: 0},
-		{name: "align 1 to 1024", offset: 1, align: 1024, expected: 1024},
-		{name: "align 1023 to 1024", offset: 1023, align: 1024, expected: 1024},
-		{name: "align 1024 to 1024", offset: 1024, align: 1024, expected: 1024},
-		{name: "align 1025 to 1024", offset: 1025, align: 1024, expected: 2048},
+		{name: "align 0 to 0", offset: 0, align: 0, wantOffset: 0},
+		{name: "align 1 to 0", offset: 1, align: 0, wantOffset: 1},
+		{name: "align 0 to 1024", offset: 0, align: 1024, wantOffset: 0},
+		{name: "align 1 to 1024", offset: 1, align: 1024, wantOffset: 1024},
+		{name: "align 1023 to 1024", offset: 1023, align: 1024, wantOffset: 1024},
+		{name: "align 1024 to 1024", offset: 1024, align: 1024, wantOffset: 1024},
+		{name: "align 1025 to 1024", offset: 1025, align: 1024, wantOffset: 2048},
+		{name: "align max to 1024", offset: math.MaxInt64, align: 1024, wantErr: errAlignmentOverflow},
+		{name: "align max to max", offset: math.MaxInt64, align: math.MaxInt - 1, wantErr: errAlignmentOverflow},
 	}
 
-	for _, tc := range cases {
-		actual := nextAligned(tc.offset, tc.align)
-		if actual != tc.expected {
-			t.Errorf("nextAligned case: %q, offset: %d, align: %d, expecting: %d, actual: %d\n",
-				tc.name, tc.offset, tc.align, tc.expected, actual)
-		}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			offset, err := nextAligned(tt.offset, tt.align)
+			if got, want := err, tt.wantErr; !errors.Is(got, want) {
+				t.Errorf("got error %v, want %v", got, want)
+			}
+			if got, want := offset, tt.wantOffset; got != want {
+				t.Errorf("got offset %v, want %v", got, want)
+			}
+		})
 	}
 }
 

pkg/siftool/del.go

@@ -29,6 +29,7 @@ func (c *command) getDel() *cobra.Command {
 				return fmt.Errorf("while converting id: %w", err)
 			}
 
+			//nolint:gosec // ParseUint above ensures id is safe to cast to uint32.
 			return c.app.Del(args[1], uint32(id))
 		},
 		DisableFlagsInUseLine: true,

pkg/siftool/dump.go

@@ -30,6 +30,7 @@ func (c *command) getDump() *cobra.Command {
 				return fmt.Errorf("while converting id: %w", err)
 			}
 
+			//nolint:gosec // ParseUint above ensures id is safe to cast to uint32.
 			return c.app.Dump(args[1], uint32(id))
 		},
 		DisableFlagsInUseLine: true,

pkg/siftool/info.go

@@ -31,6 +31,7 @@ func (c *command) getInfo() *cobra.Command {
 				return fmt.Errorf("while converting id: %w", err)
 			}
 
+			//nolint:gosec // ParseUint above ensures id is safe to cast to uint32.
 			return c.app.Info(args[1], uint32(id))
 		},
 		DisableFlagsInUseLine: true,

pkg/siftool/setprim.go

@@ -29,6 +29,7 @@ func (c *command) getSetPrim() *cobra.Command {
 				return fmt.Errorf("while converting id: %w", err)
 			}
 
+			//nolint:gosec // ParseUint above ensures id is safe to cast to uint32.
 			return c.app.Setprim(args[1], uint32(id))
 		},
 		DisableFlagsInUseLine: true,