[Adding Brian to CC list again :)] On Wed, 17 Apr 2013, Yehuda Sadeh wrote:
> On Wed, Apr 17, 2013 at 9:37 AM, Jeff Mitchell > <[email protected]> wrote: > > Henry C Chang wrote: > >> > >> I looked into this problem earlier. The problem is that zfs does not > >> return ERANGE when the size of value buffer passed to getxattr is too > >> small. zfs returns with truncated xattr value. > > > > > > Is this a bug in ZFS, or simply different behavior? > > Took a brief look at the zfs code, seems like a zfs bug. > > diff --git a/module/zfs/zpl_xattr.c b/module/zfs/zpl_xattr.c > index c03764f..96db7dd 100644 > --- a/module/zfs/zpl_xattr.c > +++ b/module/zfs/zpl_xattr.c > @@ -263,6 +263,9 @@ zpl_xattr_get_sa(struct inode *ip, const char > *name, void *value, size_t size) > if (!size) > return (nv_size); > > + if (size < nv_size) > + return (-ERANGE); > + > memcpy(value, nv_value, MIN(size, nv_size)); > > return (MIN(size, nv_size)); > > > This should fix it. Not tested of course. > > Yehuda > -- > To unsubscribe from this list: send the line "unsubscribe ceph-devel" in > the body of a message to [email protected] > More majordomo info at http://vger.kernel.org/majordomo-info.html > > -- To unsubscribe from this list: send the line "unsubscribe ceph-devel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
