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// Copyright 2021 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 seccheck
import (
"gvisor.dev/gvisor/pkg/context"
"gvisor.dev/gvisor/pkg/sentry/kernel/auth"
)
// ExecveInfo contains information used by the Execve checkpoint.
//
// +fieldenum Execve
type ExecveInfo struct {
// Invoker identifies the invoking thread.
Invoker TaskInfo
// Credentials are the invoking thread's credentials.
Credentials *auth.Credentials
// BinaryPath is a path to the executable binary file being switched to in
// the mount namespace in which it was opened.
BinaryPath string
// Argv is the new process image's argument vector.
Argv []string
// Env is the new process image's environment variables.
Env []string
// BinaryMode is the executable binary file's mode.
BinaryMode uint16
// BinarySHA256 is the SHA-256 hash of the executable binary file.
//
// Note that this requires reading the entire file into memory, which is
// likely to be extremely slow.
BinarySHA256 [32]byte
}
// ExecveReq returns fields required by the Execve checkpoint.
func (s *state) ExecveReq() ExecveFieldSet {
return s.execveReq.Load()
}
// Execve is called at the Execve checkpoint.
func (s *state) Execve(ctx context.Context, mask ExecveFieldSet, info *ExecveInfo) error {
for _, c := range s.getCheckers() {
if err := c.Execve(ctx, mask, *info); err != nil {
return err
}
}
return nil
}
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