commit 675b79c47f7fb437d48ceff82db33c6cc780a508
author Theodore Ts'o <tytso@mit.edu> Thu Jun 30 20:00:41 2005 -0400
committer Theodore Ts'o <tytso@mit.edu> Thu Jun 30 20:00:41 2005 -0400
tree bf91c22e8a88fb61cba668e803bc60d3642ca9f5
parent 80af12e180bdea9ed391a0aee58e31cee7641709

Change mke2fs to refuse to create filesystems greater than 2*31-1 blocks,
at least unless forced.

misc/mke2fs.c

diff --git a/misc/mke2fs.c b/misc/mke2fs.c
index 49689c3..2379ddc 100644
--- a/misc/mke2fs.c
+++ b/misc/mke2fs.c
@@ -1352,6 +1352,13 @@
 		}
 	}
 
+	if (!force && param.s_blocks_count >= (1 << 31)) {
+		com_err(program_name, 0,
+			_("Filesystem too large.  No more than 2**31-1 blocks\n"
+			  "\t (8TB using a blocksize of 4k) are currently supported."));
+             exit(1);
+	}
+
 	if (inode_size) {
 		if (inode_size < EXT2_GOOD_OLD_INODE_SIZE ||
 		    inode_size > EXT2_BLOCK_SIZE(&param) ||