hfs: add sanity check for file name length
On a corrupted file system the ->len field could be wrong leading to a buffer overflow. Reported-and-acked-by: Clement LECIGNE <clement.lecigne@netasq.com> Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Cc: stable@kernel.org Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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@ -40,6 +40,8 @@ int hfs_mac2asc(struct super_block *sb, char *out, const struct hfs_name *in)
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src = in->name;
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srclen = in->len;
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if (srclen > HFS_NAMELEN)
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srclen = HFS_NAMELEN;
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dst = out;
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dstlen = HFS_MAX_NAMELEN;
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if (nls_io) {
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