mirror of
https://github.com/containers/podman.git
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871b008ddd
Bump to runc v1.3.3 to address CVE-2025-52881 Fixes: https://issues.redhat.com/browse/RHEL-126638 Signed-off-by: tomsweeneyredhat <tsweeney@redhat.com>
109 lines
3.1 KiB
Go
109 lines
3.1 KiB
Go
// SPDX-License-Identifier: Apache-2.0
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/*
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* Copyright (C) 2025 Aleksa Sarai <cyphar@cyphar.com>
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* Copyright (C) 2025 SUSE LLC
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package pathrs
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import (
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"fmt"
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"os"
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"github.com/cyphar/filepath-securejoin/pathrs-lite"
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"github.com/cyphar/filepath-securejoin/pathrs-lite/procfs"
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)
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func procOpenReopen(openFn func(subpath string) (*os.File, error), subpath string, flags int) (*os.File, error) {
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handle, err := retryEAGAIN(func() (*os.File, error) {
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return openFn(subpath)
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})
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if err != nil {
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return nil, err
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}
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defer handle.Close()
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f, err := Reopen(handle, flags)
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if err != nil {
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return nil, fmt.Errorf("reopen %s: %w", handle.Name(), err)
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}
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return f, nil
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}
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// ProcSelfOpen is a wrapper around [procfs.Handle.OpenSelf] and
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// [pathrs.Reopen], to let you one-shot open a procfs file with the given
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// flags.
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func ProcSelfOpen(subpath string, flags int) (*os.File, error) {
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proc, err := retryEAGAIN(procfs.OpenProcRoot)
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if err != nil {
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return nil, err
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}
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defer proc.Close()
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return procOpenReopen(proc.OpenSelf, subpath, flags)
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}
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// ProcPidOpen is a wrapper around [procfs.Handle.OpenPid] and [pathrs.Reopen],
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// to let you one-shot open a procfs file with the given flags.
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func ProcPidOpen(pid int, subpath string, flags int) (*os.File, error) {
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proc, err := retryEAGAIN(procfs.OpenProcRoot)
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if err != nil {
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return nil, err
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}
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defer proc.Close()
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return procOpenReopen(func(subpath string) (*os.File, error) {
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return proc.OpenPid(pid, subpath)
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}, subpath, flags)
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}
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// ProcThreadSelfOpen is a wrapper around [procfs.Handle.OpenThreadSelf] and
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// [pathrs.Reopen], to let you one-shot open a procfs file with the given
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// flags. The returned [procfs.ProcThreadSelfCloser] needs the same handling as
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// when using pathrs-lite.
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func ProcThreadSelfOpen(subpath string, flags int) (_ *os.File, _ procfs.ProcThreadSelfCloser, Err error) {
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proc, err := retryEAGAIN(procfs.OpenProcRoot)
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if err != nil {
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return nil, nil, err
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}
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defer proc.Close()
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handle, closer, err := retryEAGAIN2(func() (*os.File, procfs.ProcThreadSelfCloser, error) {
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return proc.OpenThreadSelf(subpath)
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})
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if err != nil {
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return nil, nil, err
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}
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if closer != nil {
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defer func() {
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if Err != nil {
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closer()
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}
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}()
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}
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defer handle.Close()
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f, err := Reopen(handle, flags)
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if err != nil {
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return nil, nil, fmt.Errorf("reopen %s: %w", handle.Name(), err)
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}
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return f, closer, nil
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}
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// Reopen is a wrapper around pathrs.Reopen.
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func Reopen(file *os.File, flags int) (*os.File, error) {
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return retryEAGAIN(func() (*os.File, error) {
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return pathrs.Reopen(file, flags)
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})
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}
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