58 lines
1.5 KiB
Go
58 lines
1.5 KiB
Go
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package builder
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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/docker/docker/pkg/fileutils"
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)
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// ValidateContextDirectory checks if all the contents of the directory
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// can be read and returns an error if some files can't be read
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// symlinks which point to non-existing files don't trigger an error
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func ValidateContextDirectory(srcPath string, excludes []string) error {
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contextRoot, err := getContextRoot(srcPath)
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if err != nil {
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return err
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}
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return filepath.Walk(contextRoot, func(filePath string, f os.FileInfo, err error) error {
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// skip this directory/file if it's not in the path, it won't get added to the context
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if relFilePath, err := filepath.Rel(contextRoot, filePath); err != nil {
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return err
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} else if skip, err := fileutils.Matches(relFilePath, excludes); err != nil {
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return err
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} else if skip {
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if f.IsDir() {
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return filepath.SkipDir
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}
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return nil
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}
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if err != nil {
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if os.IsPermission(err) {
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return fmt.Errorf("can't stat '%s'", filePath)
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}
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if os.IsNotExist(err) {
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return nil
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}
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return err
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}
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// skip checking if symlinks point to non-existing files, such symlinks can be useful
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// also skip named pipes, because they hanging on open
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if f.Mode()&(os.ModeSymlink|os.ModeNamedPipe) != 0 {
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return nil
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}
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if !f.IsDir() {
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currentFile, err := os.Open(filePath)
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if err != nil && os.IsPermission(err) {
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return fmt.Errorf("no permission to read from '%s'", filePath)
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}
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currentFile.Close()
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}
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return nil
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})
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}
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