Add remaining /proc/* and /proc/sys/* files

Except for one under /proc/sys/net/ipv4/tcp_sack.
/proc/pid/* is still incomplete.

Updates #1195

PiperOrigin-RevId: 290120438

1 files changed, 0 insertions, 129 deletions

diff --git a/pkg/sentry/fsimpl/proc/stat.go b/pkg/sentry/fsimpl/proc/stat.go
deleted file mode 100644
index 50894a534..000000000
--- a/pkg/sentry/fsimpl/proc/stat.go
+++ /dev/null
@@ -1,129 +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/fsimpl/kernfs"
-	"gvisor.dev/gvisor/pkg/sentry/kernel"
-)
-
-// cpuStats contains the breakdown of CPU time for /proc/stat.
-type cpuStats struct {
-	// user is time spent in userspace tasks with non-positive niceness.
-	user uint64
-
-	// nice is time spent in userspace tasks with positive niceness.
-	nice uint64
-
-	// system is time spent in non-interrupt kernel context.
-	system uint64
-
-	// idle is time spent idle.
-	idle uint64
-
-	// ioWait is time spent waiting for IO.
-	ioWait uint64
-
-	// irq is time spent in interrupt context.
-	irq uint64
-
-	// softirq is time spent in software interrupt context.
-	softirq uint64
-
-	// steal is involuntary wait time.
-	steal uint64
-
-	// guest is time spent in guests with non-positive niceness.
-	guest uint64
-
-	// guestNice is time spent in guests with positive niceness.
-	guestNice uint64
-}
-
-// String implements fmt.Stringer.
-func (c cpuStats) String() string {
-	return fmt.Sprintf("%d %d %d %d %d %d %d %d %d %d", c.user, c.nice, c.system, c.idle, c.ioWait, c.irq, c.softirq, c.steal, c.guest, c.guestNice)
-}
-
-// statData implements vfs.DynamicBytesSource for /proc/stat.
-//
-// +stateify savable
-type statData struct {
-	kernfs.DynamicBytesFile
-
-	// k is the owning Kernel.
-	k *kernel.Kernel
-}
-
-var _ dynamicInode = (*statData)(nil)
-
-// Generate implements vfs.DynamicBytesSource.Generate.
-func (s *statData) Generate(ctx context.Context, buf *bytes.Buffer) error {
-	// TODO(b/37226836): We currently export only zero CPU stats. We could
-	// at least provide some aggregate stats.
-	var cpu cpuStats
-	fmt.Fprintf(buf, "cpu  %s\n", cpu)
-
-	for c, max := uint(0), s.k.ApplicationCores(); c < max; c++ {
-		fmt.Fprintf(buf, "cpu%d %s\n", c, cpu)
-	}
-
-	// The total number of interrupts is dependent on the CPUs and PCI
-	// devices on the system. See arch_probe_nr_irqs.
-	//
-	// Since we don't report real interrupt stats, just choose an arbitrary
-	// value from a representative VM.
-	const numInterrupts = 256
-
-	// The Kernel doesn't handle real interrupts, so report all zeroes.
-	// TODO(b/37226836): We could count page faults as #PF.
-	fmt.Fprintf(buf, "intr 0") // total
-	for i := 0; i < numInterrupts; i++ {
-		fmt.Fprintf(buf, " 0")
-	}
-	fmt.Fprintf(buf, "\n")
-
-	// Total number of context switches.
-	// TODO(b/37226836): Count this.
-	fmt.Fprintf(buf, "ctxt 0\n")
-
-	// CLOCK_REALTIME timestamp from boot, in seconds.
-	fmt.Fprintf(buf, "btime %d\n", s.k.Timekeeper().BootTime().Seconds())
-
-	// Total number of clones.
-	// TODO(b/37226836): Count this.
-	fmt.Fprintf(buf, "processes 0\n")
-
-	// Number of runnable tasks.
-	// TODO(b/37226836): Count this.
-	fmt.Fprintf(buf, "procs_running 0\n")
-
-	// Number of tasks waiting on IO.
-	// TODO(b/37226836): Count this.
-	fmt.Fprintf(buf, "procs_blocked 0\n")
-
-	// Number of each softirq handled.
-	fmt.Fprintf(buf, "softirq 0") // total
-	for i := 0; i < linux.NumSoftIRQ; i++ {
-		fmt.Fprintf(buf, " 0")
-	}
-	fmt.Fprintf(buf, "\n")
-	return nil
-}