Mercurial > hg > toybox
diff toys/mke2fs.c @ 80:7a058d60faf1
One more field, minor shrinking, and start on block groups.
| author | Rob Landley <rob@landley.net> |
|---|---|
| date | Sat, 27 Jan 2007 15:10:48 -0500 |
| parents | 1aff4181427b |
| children | f95f6fd94eed |
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--- a/toys/mke2fs.c Fri Jan 26 10:48:35 2007 -0500 +++ b/toys/mke2fs.c Sat Jan 27 15:10:48 2007 -0500 @@ -79,13 +79,11 @@ // Determine appropriate block size, set log_block_size and log_frag_size. if (!TT.blocksize) TT.blocksize = (length && length < 1<<29) ? 1024 : 4096; - if (TT.blocksize == 1024) temp = 0; - else if (TT.blocksize == 2048) temp = 1; - else if (TT.blocksize == 4096) temp = 2; - else error_exit("bad blocksize"); + for (temp = 0; temp < 7; temp++) if (TT.blocksize == 1024<<temp) break; + if (temp==7) error_exit("bad blocksize"); sb->log_block_size = sb->log_frag_size = SWAP_LE32(temp); - // Fill out blocks_count and r_blocks_count + // Fill out blocks_count, r_blocks_count, first_data_block if (!TT.blocks) TT.blocks = length/TT.blocksize; sb->blocks_count = SWAP_LE32(TT.blocks); @@ -94,6 +92,8 @@ temp = (TT.blocks * (uint64_t)TT.reserved_percent) /100; sb->r_blocks_count = SWAP_LE32(temp); + sb->first_data_block = TT.blocksize == 1024 ? 1 : 0; + // Set blocks_per_group and frags_per_group, which is the size of an // allocation bitmap that fits in one block (I.E. how many bits per block)?