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freifunkist-firmware/tools/genext2fs/patches/400-byteswap_fix.patch

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tools: bring back genext2fs for apm821xx This reverts commit 8c68c104eaba65273280c7a4727fbb10ab10f5af. It is used for apm821xx, which needs ext2 (not ext4) images for some devices. Signed-off-by: Felix Fietkau <nbd@nbd.name>
8 years ago
Index: genext2fs/genext2fs.c
===================================================================
--- genext2fs.orig/genext2fs.c 2011-11-29 17:36:06.000000000 +0100
+++ genext2fs/genext2fs.c 2011-11-29 17:37:37.000000000 +0100
@@ -1779,7 +1779,8 @@
assert(nod->i_block[EXT2_DIND_BLOCK] != 0);
for(i = 0; i < BLOCKSIZE/4; i++)
if(nblk > EXT2_IND_BLOCK + BLOCKSIZE/4 + (BLOCKSIZE/4)*i )
- swap_block(get_blk(fs, ((uint32*)get_blk(fs, nod->i_block[EXT2_DIND_BLOCK]))[i]));
+ if (((uint32*)get_blk(fs, nod->i_block[EXT2_DIND_BLOCK]))[i])
+ swap_block(get_blk(fs, ((uint32*)get_blk(fs, nod->i_block[EXT2_DIND_BLOCK]))[i]));
swap_block(get_blk(fs, nod->i_block[EXT2_DIND_BLOCK]));
if(nblk <= EXT2_IND_BLOCK + BLOCKSIZE/4 + BLOCKSIZE/4 * BLOCKSIZE/4)
return;
@@ -1792,7 +1793,8 @@
(BLOCKSIZE/4)*(BLOCKSIZE/4) +
i*(BLOCKSIZE/4)*(BLOCKSIZE/4) +
j*(BLOCKSIZE/4)) )
- swap_block(get_blk(fs,b2[j]));
+ if (b2[j])
+ swap_block(get_blk(fs,b2[j]));
else {
done = 1;
break;
@@ -1825,7 +1827,8 @@
swap_block(get_blk(fs, nod->i_block[EXT2_DIND_BLOCK]));
for(i = 0; i < BLOCKSIZE/4; i++)
if(nblk > EXT2_IND_BLOCK + BLOCKSIZE/4 + (BLOCKSIZE/4)*i )
- swap_block(get_blk(fs, ((uint32*)get_blk(fs, nod->i_block[EXT2_DIND_BLOCK]))[i]));
+ if (((uint32*)get_blk(fs, nod->i_block[EXT2_DIND_BLOCK]))[i])
+ swap_block(get_blk(fs, ((uint32*)get_blk(fs, nod->i_block[EXT2_DIND_BLOCK]))[i]));
if(nblk <= EXT2_IND_BLOCK + BLOCKSIZE/4 + BLOCKSIZE/4 * BLOCKSIZE/4)
return;
/* Adding support for triple indirection */
@@ -1839,7 +1842,8 @@
(BLOCKSIZE/4)*(BLOCKSIZE/4) +
i*(BLOCKSIZE/4)*(BLOCKSIZE/4) +
j*(BLOCKSIZE/4)) )
- swap_block(get_blk(fs,b2[j]));
+ if (b2[j])
+ swap_block(get_blk(fs,b2[j]));
else {
done = 1;
break;