github.com/ttpreport/gvisor-ligolo@v0.0.0-20240123134145-a858404967ba/pkg/sentry/fsimpl/cgroupfs/job.go (about)

     1  // Copyright 2021 The gVisor Authors.
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //     http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  package cgroupfs
    16  
    17  import (
    18  	"github.com/ttpreport/gvisor-ligolo/pkg/atomicbitops"
    19  	"github.com/ttpreport/gvisor-ligolo/pkg/context"
    20  	"github.com/ttpreport/gvisor-ligolo/pkg/sentry/fsimpl/kernfs"
    21  	"github.com/ttpreport/gvisor-ligolo/pkg/sentry/kernel"
    22  	"github.com/ttpreport/gvisor-ligolo/pkg/sentry/kernel/auth"
    23  )
    24  
    25  // +stateify savable
    26  type jobController struct {
    27  	controllerCommon
    28  	controllerStateless
    29  	controllerNoResource
    30  
    31  	id atomicbitops.Int64
    32  }
    33  
    34  var _ controller = (*jobController)(nil)
    35  
    36  func newJobController(fs *filesystem) *jobController {
    37  	c := &jobController{}
    38  	c.controllerCommon.init(kernel.CgroupControllerJob, fs)
    39  	return c
    40  }
    41  
    42  // Clone implements controller.Clone.
    43  func (c *jobController) Clone() controller {
    44  	new := &jobController{
    45  		id: atomicbitops.FromInt64(c.id.Load()),
    46  	}
    47  	new.controllerCommon.cloneFromParent(c)
    48  	return new
    49  }
    50  
    51  func (c *jobController) AddControlFiles(ctx context.Context, creds *auth.Credentials, _ *cgroupInode, contents map[string]kernfs.Inode) {
    52  	contents["job.id"] = c.fs.newStubControllerFile(ctx, creds, &c.id, true)
    53  }