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keywords: return non-zero symlink size

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Previously, the symlink size reported by a archive/tar header
was 0. This is incorrect, as the size of a symlink should be
the size of its contents, which is just the path to where
the symlink points to. Thus, the size of this file would just
be len(Linkname).

Signed-off-by: Stephen Chung <schung@redhat.com>
This commit is contained in:
Stephen Chung 2016-08-02 15:39:54 -04:00
parent aa6d7c2c6e
commit 4dc5000106
1 changed files with 5 additions and 0 deletions
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5
keywords.go
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@ -255,6 +255,11 @@ var (
return fmt.Sprintf("mode=%#o", permissions), nil
}
sizeKeywordFunc = func(path string, info os.FileInfo, r io.Reader) (string, error) {
if sys, ok := info.Sys().(*tar.Header); ok {
if sys.Typeflag == tar.TypeSymlink {
return fmt.Sprintf("size=%d", len(sys.Linkname)), nil
}
}
return fmt.Sprintf("size=%d", info.Size()), nil
}
cksumKeywordFunc = func(path string, info os.FileInfo, r io.Reader) (string, error) {