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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>
73 lines
2.4 KiB
Go
73 lines
2.4 KiB
Go
// SPDX-License-Identifier: Apache-2.0
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/*
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* Copyright (C) 2024-2025 Aleksa Sarai <cyphar@cyphar.com>
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* Copyright (C) 2024-2025 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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"path/filepath"
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"github.com/cyphar/filepath-securejoin/pathrs-lite"
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"golang.org/x/sys/unix"
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)
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// OpenInRoot opens the given path inside the root with the provided flags. It
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// is effectively shorthand for [securejoin.OpenInRoot] followed by
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// [securejoin.Reopen].
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func OpenInRoot(root, subpath string, flags int) (*os.File, error) {
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handle, err := retryEAGAIN(func() (*os.File, error) {
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return pathrs.OpenInRoot(root, 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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return Reopen(handle, flags)
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}
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// CreateInRoot creates a new file inside a root (as well as any missing parent
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// directories) and returns a handle to said file. This effectively has
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// open(O_CREAT|O_NOFOLLOW) semantics. If you want the creation to use O_EXCL,
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// include it in the passed flags. The fileMode argument uses unix.* mode bits,
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// *not* os.FileMode.
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func CreateInRoot(root, subpath string, flags int, fileMode uint32) (*os.File, error) {
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dir, filename := filepath.Split(subpath)
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if filepath.Join("/", filename) == "/" {
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return nil, fmt.Errorf("create in root subpath %q has bad trailing component %q", subpath, filename)
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}
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dirFd, err := MkdirAllInRootOpen(root, dir, 0o755)
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if err != nil {
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return nil, err
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}
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defer dirFd.Close()
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// We know that the filename does not have any "/" components, and that
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// dirFd is inside the root. O_NOFOLLOW will stop us from following
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// trailing symlinks, so this is safe to do. libpathrs's Root::create_file
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// works the same way.
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flags |= unix.O_CREAT | unix.O_NOFOLLOW
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fd, err := unix.Openat(int(dirFd.Fd()), filename, flags, fileMode)
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if err != nil {
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return nil, err
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}
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return os.NewFile(uintptr(fd), root+"/"+subpath), nil
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}
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