github.com/containerd/nerdctl/v2@v2.0.0-beta.5.0.20240520001846-b5758f54fa28/pkg/cmd/container/run_ulimit.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 container
    18  
    19  import (
    20  	"context"
    21  	"strings"
    22  
    23  	"github.com/containerd/containerd/containers"
    24  	"github.com/containerd/containerd/oci"
    25  	"github.com/containerd/nerdctl/v2/pkg/strutil"
    26  	"github.com/docker/go-units"
    27  	"github.com/opencontainers/runtime-spec/specs-go"
    28  )
    29  
    30  func generateUlimitsOpts(ulimits []string) ([]oci.SpecOpts, error) {
    31  	var opts []oci.SpecOpts
    32  	ulimits = strutil.DedupeStrSlice(ulimits)
    33  	if len(ulimits) > 0 {
    34  		var rlimits []specs.POSIXRlimit
    35  		for _, ulimit := range ulimits {
    36  			l, err := units.ParseUlimit(ulimit)
    37  			if err != nil {
    38  				return nil, err
    39  			}
    40  			rlimits = append(rlimits, specs.POSIXRlimit{
    41  				Type: "RLIMIT_" + strings.ToUpper(l.Name),
    42  				Hard: uint64(l.Hard),
    43  				Soft: uint64(l.Soft),
    44  			})
    45  		}
    46  		opts = append(opts, withRlimits(rlimits))
    47  	}
    48  	return opts, nil
    49  }
    50  
    51  func withRlimits(rlimits []specs.POSIXRlimit) oci.SpecOpts {
    52  	return func(_ context.Context, _ oci.Client, _ *containers.Container, s *oci.Spec) error {
    53  		s.Process.Rlimits = rlimits
    54  		return nil
    55  	}
    56  }