archive/tar: add support for GNU sparse files.

Supports all the current GNU tar sparse formats, including the old GNU format and the GNU PAX format versions 0.0, 0.1, and 1.0. Fixes #3864. LGTM=rsc R=golang-codereviews, dave, gobot, dsymonds, rsc CC=golang-codereviews https://golang.org/cl/64740043
golang · Apr 3, 2014 · 730db0a · 730db0a
1 parent dd9c403
commit 730db0a
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diff --git a/src/pkg/archive/tar/common.go b/src/pkg/archive/tar/common.go
@@ -38,6 +38,7 @@ const (
 	TypeXGlobalHeader = 'g'    // global extended header
 	TypeGNULongName   = 'L'    // Next file has a long name
 	TypeGNULongLink   = 'K'    // Next file symlinks to a file w/ a long name
+	TypeGNUSparse     = 'S'    // sparse file
 )
 
 // A Header represents a single header in a tar archive.