github.com/containerd/containerd@v22.0.0-20200918172823-438c87b8e050+incompatible/services/opt/service.go (about)

     1  /*
     2     Copyright The containerd Authors.
     3  
     4     Licensed under the Apache License, Version 2.0 (the "License");
     5     you may not use this file except in compliance with the License.
     6     You may obtain a copy of the License at
     7  
     8         http://www.apache.org/licenses/LICENSE-2.0
     9  
    10     Unless required by applicable law or agreed to in writing, software
    11     distributed under the License is distributed on an "AS IS" BASIS,
    12     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    13     See the License for the specific language governing permissions and
    14     limitations under the License.
    15  */
    16  
    17  package opt
    18  
    19  import (
    20  	"fmt"
    21  	"os"
    22  	"path/filepath"
    23  
    24  	"github.com/containerd/containerd/plugin"
    25  	"github.com/pkg/errors"
    26  )
    27  
    28  // Config for the opt manager
    29  type Config struct {
    30  	// Path for the opt directory
    31  	Path string `toml:"path"`
    32  }
    33  
    34  func init() {
    35  	plugin.Register(&plugin.Registration{
    36  		Type: plugin.InternalPlugin,
    37  		ID:   "opt",
    38  		Config: &Config{
    39  			Path: defaultPath,
    40  		},
    41  		InitFn: func(ic *plugin.InitContext) (interface{}, error) {
    42  			path := ic.Config.(*Config).Path
    43  			ic.Meta.Exports["path"] = path
    44  			bin := filepath.Join(path, "bin")
    45  			if err := os.MkdirAll(bin, 0711); err != nil {
    46  				return nil, err
    47  			}
    48  			if err := os.Setenv("PATH", fmt.Sprintf("%s%c%s", bin, os.PathListSeparator, os.Getenv("PATH"))); err != nil {
    49  				return nil, errors.Wrapf(err, "set binary image directory in path %s", bin)
    50  			}
    51  
    52  			lib := filepath.Join(path, "lib")
    53  			if err := os.MkdirAll(lib, 0711); err != nil {
    54  				return nil, err
    55  			}
    56  			if err := os.Setenv("LD_LIBRARY_PATH", fmt.Sprintf("%s%c%s", lib, os.PathListSeparator, os.Getenv("LD_LIBRARY_PATH"))); err != nil {
    57  				return nil, errors.Wrapf(err, "set binary lib directory in path %s", lib)
    58  			}
    59  			return &manager{}, nil
    60  		},
    61  	})
    62  }
    63  
    64  type manager struct {
    65  }