func (b *Builder) runContextCommand(args []string, allowRemote bool, allowLocalDecompression bool, cmdName string) error {
if b.context == nil {
return fmt.Errorf("No context given. Impossible to use %s", cmdName)
}
if len(args) < 2 {
return fmt.Errorf("Invalid %s format - at least two arguments required", cmdName)
}
// Work in daemon-specific filepath semantics
dest := filepath.FromSlash(args[len(args)-1]) // last one is always the dest
b.runConfig.Image = b.image
var infos []copyInfo
// Loop through each src file and calculate the info we need to
// do the copy (e.g. hash value if cached). Don't actually do
// the copy until we've looked at all src files
var err error
for _, orig := range args[0 : len(args)-1] {
var fi builder.FileInfo
decompress := allowLocalDecompression
if urlutil.IsURL(orig) {
if !allowRemote {
return fmt.Errorf("Source can't be a URL for %s", cmdName)
}
fi, err = b.download(orig)
if err != nil {
return err
}
defer os.RemoveAll(filepath.Dir(fi.Path()))
decompress = false
infos = append(infos, copyInfo{fi, decompress})
continue
}
// not a URL
subInfos, err := b.calcCopyInfo(cmdName, orig, allowLocalDecompression, true)
if err != nil {
return err
}
infos = append(infos, subInfos...)
}
if len(infos) == 0 {
return fmt.Errorf("No source files were specified")
}
if len(infos) > 1 && !strings.HasSuffix(dest, string(os.PathSeparator)) {
return fmt.Errorf("When using %s with more than one source file, the destination must be a directory and end with a /", cmdName)
}
// For backwards compat, if there's just one info then use it as the
// cache look-up string, otherwise hash 'em all into one
var srcHash string
var origPaths string
if len(infos) == 1 {
fi := infos[0].FileInfo
origPaths = fi.Name()
if hfi, ok := fi.(builder.Hashed); ok {
srcHash = hfi.Hash()
}
} else {
var hashs []string
var origs []string
for _, info := range infos {
fi := info.FileInfo
origs = append(origs, fi.Name())
if hfi, ok := fi.(builder.Hashed); ok {
hashs = append(hashs, hfi.Hash())
}
}
hasher := sha256.New()
hasher.Write([]byte(strings.Join(hashs, ",")))
srcHash = "multi:" + hex.EncodeToString(hasher.Sum(nil))
origPaths = strings.Join(origs, " ")
}
cmd := b.runConfig.Cmd
if runtime.GOOS != "windows" {
b.runConfig.Cmd = strslice.New("/bin/sh", "-c", fmt.Sprintf("#(nop) %s %s in %s", cmdName, srcHash, dest))
} else {
b.runConfig.Cmd = strslice.New("cmd", "/S", "/C", fmt.Sprintf("REM (nop) %s %s in %s", cmdName, srcHash, dest))
}
defer func(cmd *strslice.StrSlice) { b.runConfig.Cmd = cmd }(cmd)
if hit, err := b.probeCache(); err != nil {
return err
} else if hit {
return nil
}
container, err := b.docker.ContainerCreate(types.ContainerCreateConfig{Config: b.runConfig})
if err != nil {
return err
}
b.tmpContainers[container.ID] = struct{}{}
comment := fmt.Sprintf("%s %s in %s", cmdName, origPaths, dest)
// Twiddle the destination when its a relative path - meaning, make it
// relative to the WORKINGDIR
if !system.IsAbs(dest) {
hasSlash := strings.HasSuffix(dest, string(os.PathSeparator))
dest = filepath.Join(string(os.PathSeparator), filepath.FromSlash(b.runConfig.WorkingDir), dest)
// Make sure we preserve any trailing slash
if hasSlash {
dest += string(os.PathSeparator)
}
}
for _, info := range infos {
if err := b.docker.BuilderCopy(container.ID, dest, info.FileInfo, info.decompress); err != nil {
return err
}
}
return b.commit(container.ID, cmd, comment)
}
func (b *Builder) runContextCommand(args []string, allowRemote bool, allowLocalDecompression bool, cmdName string) error {
if b.context == nil {
return fmt.Errorf("No context given. Impossible to use %s", cmdName)
}
if len(args) < 2 {
return fmt.Errorf("Invalid %s format - at least two arguments required", cmdName)
}
// Work in daemon-specific filepath semantics
dest := filepath.FromSlash(args[len(args)-1]) // last one is always the dest
b.runConfig.Image = b.image
var infos []copyInfo
// Loop through each src file and calculate the info we need to
// do the copy (e.g. hash value if cached). Don't actually do
// the copy until we've looked at all src files
var err error
for _, orig := range args[0 : len(args)-1] {
var fi builder.FileInfo
decompress := allowLocalDecompression
if urlutil.IsURL(orig) {
if !allowRemote {
return fmt.Errorf("Source can't be a URL for %s", cmdName)
}
fi, err = b.download(orig)
if err != nil {
return err
}
defer os.RemoveAll(filepath.Dir(fi.Path()))
decompress = false
infos = append(infos, copyInfo{fi, decompress})
continue
}
// not a URL
subInfos, err := b.calcCopyInfo(cmdName, orig, allowLocalDecompression, true)
if err != nil {
return err
}
infos = append(infos, subInfos...)
}
if len(infos) == 0 {
return fmt.Errorf("No source files were specified")
}
if len(infos) > 1 && !strings.HasSuffix(dest, string(os.PathSeparator)) {
return fmt.Errorf("When using %s with more than one source file, the destination must be a directory and end with a /", cmdName)
}
// For backwards compat, if there's just one info then use it as the
// cache look-up string, otherwise hash 'em all into one
var srcHash string
var origPaths string
if len(infos) == 1 {
fi := infos[0].FileInfo
origPaths = fi.Name()
if hfi, ok := fi.(builder.Hashed); ok {
srcHash = hfi.Hash()
}
} else {
var hashs []string
var origs []string
for _, info := range infos {
fi := info.FileInfo
origs = append(origs, fi.Name())
if hfi, ok := fi.(builder.Hashed); ok {
hashs = append(hashs, hfi.Hash())
}
}
hasher := sha256.New()
hasher.Write([]byte(strings.Join(hashs, ",")))
srcHash = "multi:" + hex.EncodeToString(hasher.Sum(nil))
origPaths = strings.Join(origs, " ")
}
cmd := b.runConfig.Cmd
if runtime.GOOS != "windows" {
b.runConfig.Cmd = strslice.StrSlice{"/bin/sh", "-c", fmt.Sprintf("#(nop) %s %s in %s", cmdName, srcHash, dest)}
} else {
b.runConfig.Cmd = strslice.StrSlice{"cmd", "/S", "/C", fmt.Sprintf("REM (nop) %s %s in %s", cmdName, srcHash, dest)}
}
defer func(cmd strslice.StrSlice) { b.runConfig.Cmd = cmd }(cmd)
if hit, err := b.probeCache(); err != nil {
return err
} else if hit {
return nil
}
container, err := b.docker.ContainerCreate(types.ContainerCreateConfig{Config: b.runConfig})
if err != nil {
return err
}
b.tmpContainers[container.ID] = struct{}{}
comment := fmt.Sprintf("%s %s in %s", cmdName, origPaths, dest)
// Twiddle the destination when its a relative path - meaning, make it
// relative to the WORKINGDIR
endsInSlash := strings.HasSuffix(dest, string(os.PathSeparator))
if runtime.GOOS == "windows" {
// On Windows, this is more complicated. We are guaranteed that the
// WorkingDir is already platform consistent meaning in the format
// UPPERCASEDriveLetter-Colon-Backslash-Foldername. However, Windows
// for now also has the limitation that ADD/COPY can only be done to
// the C: (system) drive, not any drives that might be present as a
// result of bind mounts.
//
// So... if the path specified is Linux-style absolute (/foo or \\foo),
// we assume it is the system drive. If it is a Windows-style absolute
// (DRIVE:\\foo), error if DRIVE is not C. And finally, ensure we
// strip any configured working directories drive letter so that it
// can be subsequently legitimately converted to a Windows volume-style
// pathname.
// Not a typo - filepath.IsAbs, not system.IsAbs on this next check as
// we only want to validate where the DriveColon part has been supplied.
if filepath.IsAbs(dest) {
if strings.ToUpper(string(dest[0])) != "C" {
return fmt.Errorf("Windows does not support %s with a destinations not on the system drive (C:)", cmdName)
}
dest = dest[2:] // Strip the drive letter
}
// Cannot handle relative where WorkingDir is not the system drive.
if len(b.runConfig.WorkingDir) > 0 {
if !system.IsAbs(b.runConfig.WorkingDir[2:]) {
return fmt.Errorf("Current WorkingDir %s is not platform consistent", b.runConfig.WorkingDir)
}
if !system.IsAbs(dest) {
if string(b.runConfig.WorkingDir[0]) != "C" {
return fmt.Errorf("Windows does not support %s with relative paths when WORKDIR is not the system drive", cmdName)
}
dest = filepath.Join(string(os.PathSeparator), b.runConfig.WorkingDir[2:], dest)
// Make sure we preserve any trailing slash
if endsInSlash {
dest += string(os.PathSeparator)
}
}
}
} else {
if !system.IsAbs(dest) {
dest = filepath.Join(string(os.PathSeparator), filepath.FromSlash(b.runConfig.WorkingDir), dest)
// Make sure we preserve any trailing slash
if endsInSlash {
dest += string(os.PathSeparator)
}
}
}
for _, info := range infos {
if err := b.docker.CopyOnBuild(container.ID, dest, info.FileInfo, info.decompress); err != nil {
return err
}
}
return b.commit(container.ID, cmd, comment)
}
// BuilderCopy copies/extracts a source FileInfo to a destination path inside a container
// specified by a container object.
// TODO: make sure callers don't unnecessarily convert destPath with filepath.FromSlash (Copy does it already).
// BuilderCopy should take in abstract paths (with slashes) and the implementation should convert it to OS-specific paths.
func (d Docker) BuilderCopy(cID string, destPath string, src builder.FileInfo, decompress bool) error {
srcPath := src.Path()
destExists := true
destDir := false
rootUID, rootGID := d.Daemon.GetRemappedUIDGID()
// Work in daemon-local OS specific file paths
destPath = filepath.FromSlash(destPath)
c, err := d.Daemon.GetContainer(cID)
if err != nil {
return err
}
err = d.Daemon.Mount(c)
if err != nil {
return err
}
defer d.Daemon.Unmount(c)
dest, err := c.GetResourcePath(destPath)
if err != nil {
return err
}
// Preserve the trailing slash
// TODO: why are we appending another path separator if there was already one?
if strings.HasSuffix(destPath, string(os.PathSeparator)) || destPath == "." {
destDir = true
dest += string(os.PathSeparator)
}
destPath = dest
destStat, err := os.Stat(destPath)
if err != nil {
if !os.IsNotExist(err) {
logrus.Errorf("Error performing os.Stat on %s. %s", destPath, err)
return err
}
destExists = false
}
if src.IsDir() {
// copy as directory
if err := d.Archiver.CopyWithTar(srcPath, destPath); err != nil {
return err
}
return fixPermissions(srcPath, destPath, rootUID, rootGID, destExists)
}
if decompress && archive.IsArchivePath(srcPath) {
// Only try to untar if it is a file and that we've been told to decompress (when ADD-ing a remote file)
// First try to unpack the source as an archive
// to support the untar feature we need to clean up the path a little bit
// because tar is very forgiving. First we need to strip off the archive's
// filename from the path but this is only added if it does not end in slash
tarDest := destPath
if strings.HasSuffix(tarDest, string(os.PathSeparator)) {
tarDest = filepath.Dir(destPath)
}
// try to successfully untar the orig
err := d.Archiver.UntarPath(srcPath, tarDest)
if err != nil {
logrus.Errorf("Couldn't untar to %s: %v", tarDest, err)
}
return err
}
// only needed for fixPermissions, but might as well put it before CopyFileWithTar
if destDir || (destExists && destStat.IsDir()) {
destPath = filepath.Join(destPath, src.Name())
}
if err := idtools.MkdirAllNewAs(filepath.Dir(destPath), 0755, rootUID, rootGID); err != nil {
return err
}
if err := d.Archiver.CopyFileWithTar(srcPath, destPath); err != nil {
return err
}
return fixPermissions(srcPath, destPath, rootUID, rootGID, destExists)
}
// BuilderCopy copies/extracts a source FileInfo to a destination path inside a container
// specified by a container object.
// TODO: make sure callers don't unnecessarily convert destPath with filepath.FromSlash (Copy does it already).
// BuilderCopy should take in abstract paths (with slashes) and the implementation should convert it to OS-specific paths.
func (d Docker) BuilderCopy(cId string, destPath string, src builder.FileInfo, decompress bool) error {
// add copy item to exec-copy.sh
podId, ok := d.hyper.CopyPods[cId]
if !ok {
return fmt.Errorf("%s is not a copy pod", cId)
}
copyshell, err := os.OpenFile(filepath.Join("/var/run/hyper/shell", podId, "exec-copy.sh"), os.O_RDWR|os.O_APPEND, 0755)
if err != nil {
glog.Errorf(err.Error())
return err
}
fmt.Fprintf(copyshell, fmt.Sprintf("cp -r /tmp/src/%s %s\n", src.Name(), destPath))
copyshell.Close()
srcPath := src.Path()
destExists := true
destDir := false
rootUID, rootGID := d.Daemon.GetRemappedUIDGID()
// Work in daemon-local OS specific file paths
destPath = filepath.Join("/var/run/hyper/temp/", podId, filepath.FromSlash(src.Name()))
// Preserve the trailing slash
// TODO: why are we appending another path separator if there was already one?
if strings.HasSuffix(destPath, string(os.PathSeparator)) || destPath == "." {
destDir = true
}
destStat, err := os.Stat(destPath)
if err != nil {
if !os.IsNotExist(err) {
glog.Errorf("Error performing os.Stat on %s. %s", destPath, err)
return err
}
destExists = false
}
uidMaps, gidMaps := d.Daemon.GetUIDGIDMaps()
archiver := &archive.Archiver{
Untar: chrootarchive.Untar,
UIDMaps: uidMaps,
GIDMaps: gidMaps,
}
if src.IsDir() {
// copy as directory
if err := archiver.CopyWithTar(srcPath, destPath); err != nil {
return err
}
return fixPermissions(srcPath, destPath, rootUID, rootGID, destExists)
}
if decompress && archive.IsArchivePath(srcPath) {
// Only try to untar if it is a file and that we've been told to decompress (when ADD-ing a remote file)
// First try to unpack the source as an archive
// to support the untar feature we need to clean up the path a little bit
// because tar is very forgiving. First we need to strip off the archive's
// filename from the path but this is only added if it does not end in slash
tarDest := destPath
if strings.HasSuffix(tarDest, string(os.PathSeparator)) {
tarDest = filepath.Dir(destPath)
}
// try to successfully untar the orig
err := archiver.UntarPath(srcPath, tarDest)
if err != nil {
glog.Errorf("Couldn't untar to %s: %v", tarDest, err)
}
return err
}
// only needed for fixPermissions, but might as well put it before CopyFileWithTar
if destDir || (destExists && destStat.IsDir()) {
destPath = filepath.Join(destPath, src.Name())
}
if err := idtools.MkdirAllNewAs(filepath.Dir(destPath), 0755, rootUID, rootGID); err != nil {
return err
}
if err := archiver.CopyFileWithTar(srcPath, destPath); err != nil {
return err
}
return fixPermissions(srcPath, destPath, rootUID, rootGID, destExists)
}
