1 files changed, 0 insertions, 265 deletions
diff --git a/pkg/sentry/fsimpl/proc/task.go b/pkg/sentry/fsimpl/proc/task.go
deleted file mode 100644
index 0d87be52b..000000000
--- a/pkg/sentry/fsimpl/proc/task.go
+++ /dev/null
@@ -1,265 +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 (
-	"bytes"
-	"fmt"
-
-	"gvisor.dev/gvisor/pkg/abi/linux"
-	"gvisor.dev/gvisor/pkg/sentry/context"
-	"gvisor.dev/gvisor/pkg/sentry/kernel"
-	"gvisor.dev/gvisor/pkg/sentry/limits"
-	"gvisor.dev/gvisor/pkg/sentry/mm"
-	"gvisor.dev/gvisor/pkg/sentry/usage"
-	"gvisor.dev/gvisor/pkg/sentry/usermem"
-	"gvisor.dev/gvisor/pkg/sentry/vfs"
-)
-
-// mapsCommon is embedded by mapsData and smapsData.
-type mapsCommon struct {
-	t *kernel.Task
-}
-
-// mm gets the kernel task's MemoryManager. No additional reference is taken on
-// mm here. This is safe because MemoryManager.destroy is required to leave the
-// MemoryManager in a state where it's still usable as a DynamicBytesSource.
-func (md *mapsCommon) mm() *mm.MemoryManager {
-	var tmm *mm.MemoryManager
-	md.t.WithMuLocked(func(t *kernel.Task) {
-		if mm := t.MemoryManager(); mm != nil {
-			tmm = mm
-		}
-	})
-	return tmm
-}
-
-// mapsData implements vfs.DynamicBytesSource for /proc/[pid]/maps.
-//
-// +stateify savable
-type mapsData struct {
-	mapsCommon
-}
-
-var _ vfs.DynamicBytesSource = (*mapsData)(nil)
-
-// Generate implements vfs.DynamicBytesSource.Generate.
-func (md *mapsData) Generate(ctx context.Context, buf *bytes.Buffer) error {
-	if mm := md.mm(); mm != nil {
-		mm.ReadMapsDataInto(ctx, buf)
-	}
-	return nil
-}
-
-// smapsData implements vfs.DynamicBytesSource for /proc/[pid]/smaps.
-//
-// +stateify savable
-type smapsData struct {
-	mapsCommon
-}
-
-var _ vfs.DynamicBytesSource = (*smapsData)(nil)
-
-// Generate implements vfs.DynamicBytesSource.Generate.
-func (sd *smapsData) Generate(ctx context.Context, buf *bytes.Buffer) error {
-	if mm := sd.mm(); mm != nil {
-		mm.ReadSmapsDataInto(ctx, buf)
-	}
-	return nil
-}
-
-// +stateify savable
-type taskStatData struct {
-	t *kernel.Task
-
-	// If tgstats is true, accumulate fault stats (not implemented) and CPU
-	// time across all tasks in t's thread group.
-	tgstats bool
-
-	// pidns is the PID namespace associated with the proc filesystem that
-	// includes the file using this statData.
-	pidns *kernel.PIDNamespace
-}
-
-var _ vfs.DynamicBytesSource = (*taskStatData)(nil)
-
-// Generate implements vfs.DynamicBytesSource.Generate.
-func (s *taskStatData) Generate(ctx context.Context, buf *bytes.Buffer) error {
-	fmt.Fprintf(buf, "%d ", s.pidns.IDOfTask(s.t))
-	fmt.Fprintf(buf, "(%s) ", s.t.Name())
-	fmt.Fprintf(buf, "%c ", s.t.StateStatus()[0])
-	ppid := kernel.ThreadID(0)
-	if parent := s.t.Parent(); parent != nil {
-		ppid = s.pidns.IDOfThreadGroup(parent.ThreadGroup())
-	}
-	fmt.Fprintf(buf, "%d ", ppid)
-	fmt.Fprintf(buf, "%d ", s.pidns.IDOfProcessGroup(s.t.ThreadGroup().ProcessGroup()))
-	fmt.Fprintf(buf, "%d ", s.pidns.IDOfSession(s.t.ThreadGroup().Session()))
-	fmt.Fprintf(buf, "0 0 " /* tty_nr tpgid */)
-	fmt.Fprintf(buf, "0 " /* flags */)
-	fmt.Fprintf(buf, "0 0 0 0 " /* minflt cminflt majflt cmajflt */)
-	var cputime usage.CPUStats
-	if s.tgstats {
-		cputime = s.t.ThreadGroup().CPUStats()
-	} else {
-		cputime = s.t.CPUStats()
-	}
-	fmt.Fprintf(buf, "%d %d ", linux.ClockTFromDuration(cputime.UserTime), linux.ClockTFromDuration(cputime.SysTime))
-	cputime = s.t.ThreadGroup().JoinedChildCPUStats()
-	fmt.Fprintf(buf, "%d %d ", linux.ClockTFromDuration(cputime.UserTime), linux.ClockTFromDuration(cputime.SysTime))
-	fmt.Fprintf(buf, "%d %d ", s.t.Priority(), s.t.Niceness())
-	fmt.Fprintf(buf, "%d ", s.t.ThreadGroup().Count())
-
-	// itrealvalue. Since kernel 2.6.17, this field is no longer
-	// maintained, and is hard coded as 0.
-	fmt.Fprintf(buf, "0 ")
-
-	// Start time is relative to boot time, expressed in clock ticks.
-	fmt.Fprintf(buf, "%d ", linux.ClockTFromDuration(s.t.StartTime().Sub(s.t.Kernel().Timekeeper().BootTime())))
-
-	var vss, rss uint64
-	s.t.WithMuLocked(func(t *kernel.Task) {
-		if mm := t.MemoryManager(); mm != nil {
-			vss = mm.VirtualMemorySize()
-			rss = mm.ResidentSetSize()
-		}
-	})
-	fmt.Fprintf(buf, "%d %d ", vss, rss/usermem.PageSize)
-
-	// rsslim.
-	fmt.Fprintf(buf, "%d ", s.t.ThreadGroup().Limits().Get(limits.Rss).Cur)
-
-	fmt.Fprintf(buf, "0 0 0 0 0 " /* startcode endcode startstack kstkesp kstkeip */)
-	fmt.Fprintf(buf, "0 0 0 0 0 " /* signal blocked sigignore sigcatch wchan */)
-	fmt.Fprintf(buf, "0 0 " /* nswap cnswap */)
-	terminationSignal := linux.Signal(0)
-	if s.t == s.t.ThreadGroup().Leader() {
-		terminationSignal = s.t.ThreadGroup().TerminationSignal()
-	}
-	fmt.Fprintf(buf, "%d ", terminationSignal)
-	fmt.Fprintf(buf, "0 0 0 " /* processor rt_priority policy */)
-	fmt.Fprintf(buf, "0 0 0 " /* delayacct_blkio_ticks guest_time cguest_time */)
-	fmt.Fprintf(buf, "0 0 0 0 0 0 0 " /* start_data end_data start_brk arg_start arg_end env_start env_end */)
-	fmt.Fprintf(buf, "0\n" /* exit_code */)
-
-	return nil
-}
-
-// statmData implements vfs.DynamicBytesSource for /proc/[pid]/statm.
-//
-// +stateify savable
-type statmData struct {
-	t *kernel.Task
-}
-
-var _ vfs.DynamicBytesSource = (*statmData)(nil)
-
-// Generate implements vfs.DynamicBytesSource.Generate.
-func (s *statmData) Generate(ctx context.Context, buf *bytes.Buffer) error {
-	var vss, rss uint64
-	s.t.WithMuLocked(func(t *kernel.Task) {
-		if mm := t.MemoryManager(); mm != nil {
-			vss = mm.VirtualMemorySize()
-			rss = mm.ResidentSetSize()
-		}
-	})
-
-	fmt.Fprintf(buf, "%d %d 0 0 0 0 0\n", vss/usermem.PageSize, rss/usermem.PageSize)
-	return nil
-}
-
-// statusData implements vfs.DynamicBytesSource for /proc/[pid]/status.
-//
-// +stateify savable
-type statusData struct {
-	t     *kernel.Task
-	pidns *kernel.PIDNamespace
-}
-
-var _ vfs.DynamicBytesSource = (*statusData)(nil)
-
-// Generate implements vfs.DynamicBytesSource.Generate.
-func (s *statusData) Generate(ctx context.Context, buf *bytes.Buffer) error {
-	fmt.Fprintf(buf, "Name:\t%s\n", s.t.Name())
-	fmt.Fprintf(buf, "State:\t%s\n", s.t.StateStatus())
-	fmt.Fprintf(buf, "Tgid:\t%d\n", s.pidns.IDOfThreadGroup(s.t.ThreadGroup()))
-	fmt.Fprintf(buf, "Pid:\t%d\n", s.pidns.IDOfTask(s.t))
-	ppid := kernel.ThreadID(0)
-	if parent := s.t.Parent(); parent != nil {
-		ppid = s.pidns.IDOfThreadGroup(parent.ThreadGroup())
-	}
-	fmt.Fprintf(buf, "PPid:\t%d\n", ppid)
-	tpid := kernel.ThreadID(0)
-	if tracer := s.t.Tracer(); tracer != nil {
-		tpid = s.pidns.IDOfTask(tracer)
-	}
-	fmt.Fprintf(buf, "TracerPid:\t%d\n", tpid)
-	var fds int
-	var vss, rss, data uint64
-	s.t.WithMuLocked(func(t *kernel.Task) {
-		if fdTable := t.FDTable(); fdTable != nil {
-			fds = fdTable.Size()
-		}
-		if mm := t.MemoryManager(); mm != nil {
-			vss = mm.VirtualMemorySize()
-			rss = mm.ResidentSetSize()
-			data = mm.VirtualDataSize()
-		}
-	})
-	fmt.Fprintf(buf, "FDSize:\t%d\n", fds)
-	fmt.Fprintf(buf, "VmSize:\t%d kB\n", vss>>10)
-	fmt.Fprintf(buf, "VmRSS:\t%d kB\n", rss>>10)
-	fmt.Fprintf(buf, "VmData:\t%d kB\n", data>>10)
-	fmt.Fprintf(buf, "Threads:\t%d\n", s.t.ThreadGroup().Count())
-	creds := s.t.Credentials()
-	fmt.Fprintf(buf, "CapInh:\t%016x\n", creds.InheritableCaps)
-	fmt.Fprintf(buf, "CapPrm:\t%016x\n", creds.PermittedCaps)
-	fmt.Fprintf(buf, "CapEff:\t%016x\n", creds.EffectiveCaps)
-	fmt.Fprintf(buf, "CapBnd:\t%016x\n", creds.BoundingCaps)
-	fmt.Fprintf(buf, "Seccomp:\t%d\n", s.t.SeccompMode())
-	// We unconditionally report a single NUMA node. See
-	// pkg/sentry/syscalls/linux/sys_mempolicy.go.
-	fmt.Fprintf(buf, "Mems_allowed:\t1\n")
-	fmt.Fprintf(buf, "Mems_allowed_list:\t0\n")
-	return nil
-}
-
-// ioUsage is the /proc/<pid>/io and /proc/<pid>/task/<tid>/io data provider.
-type ioUsage interface {
-	// IOUsage returns the io usage data.
-	IOUsage() *usage.IO
-}
-
-// +stateify savable
-type ioData struct {
-	ioUsage
-}
-
-var _ vfs.DynamicBytesSource = (*ioData)(nil)
-
-// Generate implements vfs.DynamicBytesSource.Generate.
-func (i *ioData) Generate(ctx context.Context, buf *bytes.Buffer) error {
-	io := usage.IO{}
-	io.Accumulate(i.IOUsage())
-
-	fmt.Fprintf(buf, "char: %d\n", io.CharsRead)
-	fmt.Fprintf(buf, "wchar: %d\n", io.CharsWritten)
-	fmt.Fprintf(buf, "syscr: %d\n", io.ReadSyscalls)
-	fmt.Fprintf(buf, "syscw: %d\n", io.WriteSyscalls)
-	fmt.Fprintf(buf, "read_bytes: %d\n", io.BytesRead)
-	fmt.Fprintf(buf, "write_bytes: %d\n", io.BytesWritten)
-	fmt.Fprintf(buf, "cancelled_write_bytes: %d\n", io.BytesWriteCancelled)
-	return nil
-}