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| author | 2023-04-28 01:36:55 +0800 | |
|---|---|---|
| committer | 2023-04-28 01:36:55 +0800 | |
| commit | fc8c5fdce62fb229202659408798a7b6c98f6e8b (patch) | |
| tree | 7554f80e50de4af6fd255afa7c21bcdd58a7af34 /cli/internal/tarpatch/tar.go | |
| parent | dd84b9d64fb98746a230cd24233ff50a562c39c9 (diff) | |
| download | HydroRoll-fc8c5fdce62fb229202659408798a7b6c98f6e8b.tar.gz HydroRoll-fc8c5fdce62fb229202659408798a7b6c98f6e8b.zip | |
Diffstat (limited to 'cli/internal/tarpatch/tar.go')
| -rw-r--r-- | cli/internal/tarpatch/tar.go | 92 |
1 files changed, 0 insertions, 92 deletions
diff --git a/cli/internal/tarpatch/tar.go b/cli/internal/tarpatch/tar.go deleted file mode 100644 index a4dab23..0000000 --- a/cli/internal/tarpatch/tar.go +++ /dev/null @@ -1,92 +0,0 @@ -// Adapted from https://github.com/moby/moby/blob/924edb948c2731df3b77697a8fcc85da3f6eef57/pkg/archive/archive.go -// Copyright Docker, Inc. -// SPDX-License-Identifier: Apache-2.0 - -// Package tarpatch addresses an issue with stdlib throwing an error in some environments. -package tarpatch - -import ( - "archive/tar" - "io/fs" - "os" - "strings" - "time" - - "github.com/vercel/turbo/cli/internal/turbopath" -) - -// nosysFileInfo hides the system-dependent info of the wrapped FileInfo to -// prevent tar.FileInfoHeader from introspecting it and potentially calling into -// glibc. -type nosysFileInfo struct { - os.FileInfo -} - -func (fi nosysFileInfo) Sys() interface{} { - // A Sys value of type *tar.Header is safe as it is system-independent. - // The tar.FileInfoHeader function copies the fields into the returned - // header without performing any OS lookups. - if sys, ok := fi.FileInfo.Sys().(*tar.Header); ok { - return sys - } - return nil -} - -// FileInfoHeaderNoLookups creates a partially-populated tar.Header from fi. -// -// Compared to the archive/tar.FileInfoHeader function, this function is safe to -// call from a chrooted process as it does not populate fields which would -// require operating system lookups. It behaves identically to -// tar.FileInfoHeader when fi is a FileInfo value returned from -// tar.Header.FileInfo(). -// -// When fi is a FileInfo for a native file, such as returned from os.Stat() and -// os.Lstat(), the returned Header value differs from one returned from -// tar.FileInfoHeader in the following ways. The Uname and Gname fields are not -// set as OS lookups would be required to populate them. The AccessTime and -// ChangeTime fields are not currently set (not yet implemented) although that -// is subject to change. Callers which require the AccessTime or ChangeTime -// fields to be zeroed should explicitly zero them out in the returned Header -// value to avoid any compatibility issues in the future. -func FileInfoHeaderNoLookups(fi fs.FileInfo, link string) (*tar.Header, error) { - hdr, err := tar.FileInfoHeader(nosysFileInfo{fi}, link) - if err != nil { - return nil, err - } - return hdr, sysStat(fi, hdr) -} - -// FileInfoHeader creates a populated Header from fi. -// -// Compared to the archive/tar package, this function fills in less information -// but is safe to call from a chrooted process. The AccessTime and ChangeTime -// fields are not set in the returned header, ModTime is truncated to one-second -// precision, and the Uname and Gname fields are only set when fi is a FileInfo -// value returned from tar.Header.FileInfo(). -func FileInfoHeader(fullPath turbopath.AnchoredUnixPath, fileInfo fs.FileInfo, link string) (*tar.Header, error) { - hdr, err := FileInfoHeaderNoLookups(fileInfo, link) - if err != nil { - return nil, err - } - hdr.Format = tar.FormatPAX - hdr.ModTime = hdr.ModTime.Truncate(time.Second) - hdr.AccessTime = time.Time{} - hdr.ChangeTime = time.Time{} - hdr.Mode = int64(chmodTarEntry(os.FileMode(hdr.Mode))) - hdr.Name = canonicalTarName(fullPath, fileInfo.IsDir()) - return hdr, nil -} - -// canonicalTarName provides a platform-independent and consistent posix-style -// path for files and directories to be archived regardless of the platform. -func canonicalTarName(fullPath turbopath.AnchoredUnixPath, isDir bool) string { - nameString := fullPath.ToString() - if isDir { - // Append '/' if not already present. - if !strings.HasSuffix(nameString, "/") { - nameString += "/" - } - } - - return nameString -} |
