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Diffstat (limited to 'pkg/sentry/kernel/fd_map_test.go')
-rw-r--r--pkg/sentry/kernel/fd_map_test.go136
1 files changed, 0 insertions, 136 deletions
diff --git a/pkg/sentry/kernel/fd_map_test.go b/pkg/sentry/kernel/fd_map_test.go
deleted file mode 100644
index 8571dbe59..000000000
--- a/pkg/sentry/kernel/fd_map_test.go
+++ /dev/null
@@ -1,136 +0,0 @@
-// Copyright 2018 The gVisor Authors.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-// http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-package kernel
-
-import (
- "testing"
-
- "gvisor.dev/gvisor/pkg/sentry/fs/filetest"
- "gvisor.dev/gvisor/pkg/sentry/kernel/kdefs"
- "gvisor.dev/gvisor/pkg/sentry/limits"
-)
-
-const (
- // maxFD is the maximum FD to try to create in the map.
- // This number of open files has been seen in the wild.
- maxFD = 2 * 1024
-)
-
-func newTestFDMap() *FDMap {
- return &FDMap{
- files: make(map[kdefs.FD]descriptor),
- }
-}
-
-// TestFDMapMany allocates maxFD FDs, i.e. maxes out the FDMap,
-// until there is no room, then makes sure that NewFDAt works
-// and also that if we remove one and add one that works too.
-func TestFDMapMany(t *testing.T) {
- file := filetest.NewTestFile(t)
- limitSet := limits.NewLimitSet()
- limitSet.Set(limits.NumberOfFiles, limits.Limit{maxFD, maxFD}, true /* privileged */)
-
- f := newTestFDMap()
- for i := 0; i < maxFD; i++ {
- if _, err := f.NewFDFrom(0, file, FDFlags{}, limitSet); err != nil {
- t.Fatalf("Allocated %v FDs but wanted to allocate %v", i, maxFD)
- }
- }
-
- if _, err := f.NewFDFrom(0, file, FDFlags{}, limitSet); err == nil {
- t.Fatalf("f.NewFDFrom(0, r) in full map: got nil, wanted error")
- }
-
- if err := f.NewFDAt(1, file, FDFlags{}, limitSet); err != nil {
- t.Fatalf("f.NewFDAt(1, r, FDFlags{}): got %v, wanted nil", err)
- }
-}
-
-// TestFDMap does a set of simple tests to make sure simple adds,
-// removes, GetRefs, and DecRefs work. The ordering is just weird
-// enough that a table-driven approach seemed clumsy.
-func TestFDMap(t *testing.T) {
- file := filetest.NewTestFile(t)
- limitSet := limits.NewLimitSet()
- limitSet.Set(limits.NumberOfFiles, limits.Limit{1, maxFD}, true /* privileged */)
-
- f := newTestFDMap()
- if _, err := f.NewFDFrom(0, file, FDFlags{}, limitSet); err != nil {
- t.Fatalf("Adding an FD to an empty 1-size map: got %v, want nil", err)
- }
-
- if _, err := f.NewFDFrom(0, file, FDFlags{}, limitSet); err == nil {
- t.Fatalf("Adding an FD to a filled 1-size map: got nil, wanted an error")
- }
-
- largeLimit := limits.Limit{maxFD, maxFD}
- limitSet.Set(limits.NumberOfFiles, largeLimit, true /* privileged */)
-
- if fd, err := f.NewFDFrom(0, file, FDFlags{}, limitSet); err != nil {
- t.Fatalf("Adding an FD to a resized map: got %v, want nil", err)
- } else if fd != kdefs.FD(1) {
- t.Fatalf("Added an FD to a resized map: got %v, want 1", fd)
- }
-
- if err := f.NewFDAt(1, file, FDFlags{}, limitSet); err != nil {
- t.Fatalf("Replacing FD 1 via f.NewFDAt(1, r, FDFlags{}): got %v, wanted nil", err)
- }
-
- if err := f.NewFDAt(maxFD+1, file, FDFlags{}, limitSet); err == nil {
- t.Fatalf("Using an FD that was too large via f.NewFDAt(%v, r, FDFlags{}): got nil, wanted an error", maxFD+1)
- }
-
- if ref := f.GetFile(1); ref == nil {
- t.Fatalf("f.GetFile(1): got nil, wanted %v", file)
- }
-
- if ref := f.GetFile(2); ref != nil {
- t.Fatalf("f.GetFile(2): got a %v, wanted nil", ref)
- }
-
- ref, ok := f.Remove(1)
- if !ok {
- t.Fatalf("f.Remove(1) for an existing FD: failed, want success")
- }
- ref.DecRef()
-
- if ref, ok := f.Remove(1); ok {
- ref.DecRef()
- t.Fatalf("r.Remove(1) for a removed FD: got success, want failure")
- }
-
-}
-
-func TestDescriptorFlags(t *testing.T) {
- file := filetest.NewTestFile(t)
- f := newTestFDMap()
- limitSet := limits.NewLimitSet()
- limitSet.Set(limits.NumberOfFiles, limits.Limit{maxFD, maxFD}, true /* privileged */)
-
- origFlags := FDFlags{CloseOnExec: true}
-
- if err := f.NewFDAt(2, file, origFlags, limitSet); err != nil {
- t.Fatalf("f.NewFDAt(2, r, FDFlags{}): got %v, wanted nil", err)
- }
-
- newFile, newFlags := f.GetDescriptor(2)
- if newFile == nil {
- t.Fatalf("f.GetFile(2): got a %v, wanted nil", newFile)
- }
-
- if newFlags != origFlags {
- t.Fatalf("new File flags %+v don't match original %+v", newFlags, origFlags)
- }
-}