libarchive 3.x - quilt patch: Ignore FIEMAP errors on linux < 2.6.28 - e.g. https://bugs.launchpad.net/bugs/942994

ignore_fiemap_errors.patch

Origin: https://code.google.com/p/libarchive/issues/detail?id=238
Description: Ignore FIEMAP errors on linux < 2.6.28
 (most launchpad build daemon servers use ubuntu hardy) 
 https://bugs.launchpad.net/bugs/942994

Index: libarchive-3.0.3/libarchive/archive_read_disk_entry_from_file.c
===================================================================
--- libarchive-3.0.3.orig/libarchive/archive_read_disk_entry_from_file.c	2012-03-15 23:48:52.000000000 +0100
+++ libarchive-3.0.3/libarchive/archive_read_disk_entry_from_file.c	2012-03-15 23:49:00.000000000 +0100
@@ -855,16 +855,9 @@
 
 		r = ioctl(fd, FS_IOC_FIEMAP, fm); 
 		if (r < 0) {
-			/* When errno is ENOTTY, it is better we should
+			/* When errno is non-zero, it is better we should
 			 * return ARCHIVE_OK because an earlier version
-			 *(<2.6.28) cannot perfom FS_IOC_FIEMAP.
-			 * We should also check if errno is EOPNOTSUPP,
-			 * it means "Operation not supported". */
-			if (errno != ENOTTY && errno != EOPNOTSUPP) {
-				archive_set_error(&a->archive, errno,
-				    "FIEMAP failed");
-				exit_sts = ARCHIVE_FAILED;
-			}
+			 * (<2.6.28) cannot perfom FS_IOC_FIEMAP. */
 			goto exit_setup_sparse;
 		}
 		if (fm->fm_mapped_extents == 0)