udf: cleanup directory offset handling
Position in directory returned by readdir is offset of directory entry divided
by four (don't ask me why). Make this conversion only when reading f_pos from
userspace / writing it there and internally work in bytes. It makes things
more easily readable and also fixes a bug (we forgot to divide length of the
entry by 4 when advancing f_pos in udf_add_entry()).
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/fs/udf/directory.c b/fs/udf/directory.c
index be16d76..2820f8f 100644
--- a/fs/udf/directory.c
+++ b/fs/udf/directory.c
@@ -95,7 +95,7 @@
if (!fi)
return NULL;
- *nf_pos += ((fibh->eoffset - fibh->soffset) >> 2);
+ *nf_pos += fibh->eoffset - fibh->soffset;
memcpy((uint8_t *)cfi, (uint8_t *)fi,
sizeof(struct fileIdentDesc));
@@ -157,7 +157,7 @@
if (!fi)
return NULL;
- *nf_pos += ((fibh->eoffset - fibh->soffset) >> 2);
+ *nf_pos += fibh->eoffset - fibh->soffset;
if (fibh->eoffset <= dir->i_sb->s_blocksize) {
memcpy((uint8_t *)cfi, (uint8_t *)fi,
@@ -197,8 +197,7 @@
cfi->lengthFileIdent +
le16_to_cpu(cfi->lengthOfImpUse) + 3) & ~3;
- *nf_pos += (fi_len - (fibh->eoffset - fibh->soffset))
- >> 2;
+ *nf_pos += fi_len - (fibh->eoffset - fibh->soffset);
fibh->eoffset = fibh->soffset + fi_len;
} else {
memcpy((uint8_t *)cfi, (uint8_t *)fi,
