1 files changed, 0 insertions, 162 deletions
diff --git a/pkg/sentry/fsimpl/proc/tasks.go b/pkg/sentry/fsimpl/proc/tasks.go
deleted file mode 100644
index 50b2a832f..000000000
--- a/pkg/sentry/fsimpl/proc/tasks.go
+++ /dev/null
@@ -1,162 +0,0 @@
-// Copyright 2019 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 proc
-
-import (
-	"sort"
-	"strconv"
-
-	"gvisor.dev/gvisor/pkg/abi/linux"
-	"gvisor.dev/gvisor/pkg/sentry/context"
-	"gvisor.dev/gvisor/pkg/sentry/fsimpl/kernfs"
-	"gvisor.dev/gvisor/pkg/sentry/kernel"
-	"gvisor.dev/gvisor/pkg/sentry/kernel/auth"
-	"gvisor.dev/gvisor/pkg/sentry/vfs"
-	"gvisor.dev/gvisor/pkg/syserror"
-)
-
-const defaultPermission = 0444
-
-// InoGenerator generates unique inode numbers for a given filesystem.
-type InoGenerator interface {
-	NextIno() uint64
-}
-
-// tasksInode represents the inode for /proc/ directory.
-//
-// +stateify savable
-type tasksInode struct {
-	kernfs.InodeNotSymlink
-	kernfs.InodeDirectoryNoNewChildren
-	kernfs.InodeAttrs
-	kernfs.OrderedChildren
-
-	inoGen InoGenerator
-	pidns  *kernel.PIDNamespace
-}
-
-var _ kernfs.Inode = (*tasksInode)(nil)
-
-func newTasksInode(inoGen InoGenerator, k *kernel.Kernel, pidns *kernel.PIDNamespace) (*tasksInode, *kernfs.Dentry) {
-	root := auth.NewRootCredentials(pidns.UserNamespace())
-	contents := map[string]*kernfs.Dentry{
-		//"cpuinfo":     newCPUInfo(ctx, msrc),
-		//"filesystems": seqfile.NewSeqFileInode(ctx, &filesystemsData{}, msrc),
-		"loadavg":     newDentry(root, inoGen.NextIno(), defaultPermission, &loadavgData{}),
-		"meminfo":     newDentry(root, inoGen.NextIno(), defaultPermission, &meminfoData{k: k}),
-		"mounts":      kernfs.NewStaticSymlink(root, inoGen.NextIno(), defaultPermission, "self/mounts"),
-		"self":        newSelfSymlink(root, inoGen.NextIno(), defaultPermission, pidns),
-		"stat":        newDentry(root, inoGen.NextIno(), defaultPermission, &statData{k: k}),
-		"thread-self": newThreadSelfSymlink(root, inoGen.NextIno(), defaultPermission, pidns),
-		//"uptime":      newUptime(ctx, msrc),
-		//"version": newVersionData(root, inoGen.NextIno(), k),
-		"version": newDentry(root, inoGen.NextIno(), defaultPermission, &versionData{k: k}),
-	}
-
-	inode := &tasksInode{
-		pidns:  pidns,
-		inoGen: inoGen,
-	}
-	inode.InodeAttrs.Init(root, inoGen.NextIno(), linux.ModeDirectory|0555)
-
-	dentry := &kernfs.Dentry{}
-	dentry.Init(inode)
-
-	inode.OrderedChildren.Init(kernfs.OrderedChildrenOptions{})
-	links := inode.OrderedChildren.Populate(dentry, contents)
-	inode.IncLinks(links)
-
-	return inode, dentry
-}
-
-// Lookup implements kernfs.inodeDynamicLookup.
-func (i *tasksInode) Lookup(ctx context.Context, name string) (*vfs.Dentry, error) {
-	// Try to lookup a corresponding task.
-	tid, err := strconv.ParseUint(name, 10, 64)
-	if err != nil {
-		return nil, syserror.ENOENT
-	}
-
-	task := i.pidns.TaskWithID(kernel.ThreadID(tid))
-	if task == nil {
-		return nil, syserror.ENOENT
-	}
-
-	taskDentry := newTaskInode(i.inoGen, task, i.pidns, true)
-	return taskDentry.VFSDentry(), nil
-}
-
-// Valid implements kernfs.inodeDynamicLookup.
-func (i *tasksInode) Valid(ctx context.Context) bool {
-	return true
-}
-
-// IterDirents implements kernfs.inodeDynamicLookup.
-//
-// TODO(gvisor.dev/issue/1195): Use tgid N offset = TGID_OFFSET + N.
-func (i *tasksInode) IterDirents(ctx context.Context, cb vfs.IterDirentsCallback, offset, relOffset int64) (int64, error) {
-	var tids []int
-
-	// Collect all tasks. Per linux we only include it in directory listings if
-	// it's the leader. But for whatever crazy reason, you can still walk to the
-	// given node.
-	for _, tg := range i.pidns.ThreadGroups() {
-		if leader := tg.Leader(); leader != nil {
-			tids = append(tids, int(i.pidns.IDOfThreadGroup(tg)))
-		}
-	}
-
-	if len(tids) == 0 {
-		return offset, nil
-	}
-	if relOffset >= int64(len(tids)) {
-		return offset, nil
-	}
-
-	sort.Ints(tids)
-	for _, tid := range tids[relOffset:] {
-		dirent := vfs.Dirent{
-			Name:    strconv.FormatUint(uint64(tid), 10),
-			Type:    linux.DT_DIR,
-			Ino:     i.inoGen.NextIno(),
-			NextOff: offset + 1,
-		}
-		if !cb.Handle(dirent) {
-			return offset, nil
-		}
-		offset++
-	}
-	return offset, nil
-}
-
-// Open implements kernfs.Inode.
-func (i *tasksInode) Open(rp *vfs.ResolvingPath, vfsd *vfs.Dentry, flags uint32) (*vfs.FileDescription, error) {
-	fd := &kernfs.GenericDirectoryFD{}
-	fd.Init(rp.Mount(), vfsd, &i.OrderedChildren, flags)
-	return fd.VFSFileDescription(), nil
-}
-
-func (i *tasksInode) Stat(vsfs *vfs.Filesystem) linux.Statx {
-	stat := i.InodeAttrs.Stat(vsfs)
-
-	// Add dynamic children to link count.
-	for _, tg := range i.pidns.ThreadGroups() {
-		if leader := tg.Leader(); leader != nil {
-			stat.Nlink++
-		}
-	}
-
-	return stat
-}