nvidia-container-toolkit/internal/discover/hooks.go

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/*
# Copyright (c) 2021, NVIDIA CORPORATION. All rights reserved.
#
# 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 discover
import (
log "github.com/sirupsen/logrus"
)
type hooks struct {
None
logger *log.Logger
}
var _ Discover = (*hooks)(nil)
// NewHooks creates a discoverer for linux containers
func NewHooks() Discover {
return NewHooksWithLogger(log.StandardLogger())
}
// NewHooksWithLogger creates a discoverer as with NewHooks with the specified logger
func NewHooksWithLogger(logger *log.Logger) Discover {
h := hooks{
logger: logger,
}
return &h
}
func (h hooks) Hooks() ([]Hook, error) {
var hooks []Hook
hooks = append(hooks, newLdconfigHook())
return hooks, nil
}
func newLdconfigHook() Hook {
const rootPattern = "@Root.Path@"
h := Hook{
Path: "/sbin/ldconfig",
Args: []string{
// TODO: Testing seems to indicate that this is -v flag is required
"-v",
"-r", rootPattern,
},
// TODO: CreateContainer hooks were only added to a later OCI spec version
// We will have to find a way to deal with OCI versions before 1.0.2
HookName: "create-container",
Labels: map[string]string{
"min-oci-version": "1.0.2",
},
}
return h
}