tree 45516e35a895fa4eccfb36ff0d8c1e29714a2c41
parent 4fbb584a0e6ee086d6b30936c7124c687b3e977f
author Denis Vlasenko <vda.linux@googlemail.com> 1164380251 -0000
committer Denis Vlasenko <vda.linux@googlemail.com> 1164380251 -0000

tar: cache [ug]id->username/groupname mappings. Cuts down amount
of open/read/close of /etc/passwd and /etc/group
dramatically (we were rereading those for each untarred file!!!)