pkg://e2fsprogs-devel-1.39-10.el5_1.1.i386.rpm:577117/HEADER  downloads

Name        : e2fsprogs-devel              Relocations: (not relocateable)
Version     : 1.39                              Vendor: Scientific Linux
Release     : 10.el5_1.1                    Build Date: Mon Jan  7 22:46:11 2008
Install date: (not installed)               Build Host: norob.fnal.gov
Group       : Development/Libraries         Source RPM: e2fsprogs-1.39-10.el5_1.1.src.rpm
Size        : 1637477                          License: GPL
URL         : http://e2fsprogs.sourceforge.net/
Summary     : Ext2/3 filesystem-specific static libraries and headers
Description :
E2fsprogs-devel contains the libraries and header files needed to
develop second and third extended (ext2/ext3) filesystem-specific
programs.

You should install e2fsprogs-devel if you want to develop ext2/ext3
filesystem-specific programs. If you install e2fsprogs-devel, you'll
also want to install e2fsprogs.