This patch fixes up the computation of nbinodes which would go
negative due to an int overflow issue when nbblocks > 2Meg for
a 2Gig or greater filesystem.

The computation is now done as a float equation, since both nbblocks
and bytes_per_inode are no floats, and then cast to int by assignment.

int tmp_nbinodes = nbblocks * BLOCKSIZE / bytes_per_inode;

Upstream-Status: Submitted
Signed-off-by: Saul Wold <sgw@linux.intel.com>

Rebased by Dexuan Cui <dexuan.cui@intel.com>

Index: genext2fs-1.4.1/genext2fs.c
===================================================================
--- a/genext2fs.c	2012-03-29 00:07:20.308856017 +0800
+++ b/genext2fs.c	2012-03-29 00:09:06.848856005 +0800
@@ -3041,7 +3041,7 @@
 int
 main(int argc, char **argv)
 {
-	int nbblocks = -1;
+	float nbblocks = -1;
 	int nbinodes = -1;
 	int nbresrvd = -1;
 	float bytes_per_inode = -1;
@@ -3203,7 +3203,7 @@
 		}
 		if(fs_timestamp == -1)
 			fs_timestamp = time(NULL);
-		fs = init_fs(nbblocks, nbinodes, nbresrvd, holes, fs_timestamp,
+		fs = init_fs((int)nbblocks, nbinodes, nbresrvd, holes, fs_timestamp,
 			     bigendian, fsout);
 	}
 	if (volumelabel != NULL)