static int lsm_lmm_verify_common(struct lov_mds_md *lmm, int lmm_bytes,
__u16 stripe_count)
{
if (stripe_count == 0 || stripe_count > LOV_V1_INSANE_STRIPE_COUNT) {
CERROR("bad stripe count %d\n", stripe_count);
lov_dump_lmm_common(D_WARNING, lmm);
return -EINVAL;
}
if (lmm_oi_id(&lmm->lmm_oi) == 0) {
CERROR("zero object id\n");
lov_dump_lmm_common(D_WARNING, lmm);
return -EINVAL;
}
if (lmm->lmm_pattern != cpu_to_le32(LOV_PATTERN_RAID0)) {
CERROR("bad striping pattern\n");
lov_dump_lmm_common(D_WARNING, lmm);
return -EINVAL;
}
if (lmm->lmm_stripe_size == 0 ||
(le32_to_cpu(lmm->lmm_stripe_size)&(LOV_MIN_STRIPE_SIZE-1)) != 0) {
CERROR("bad stripe size %u\n",
le32_to_cpu(lmm->lmm_stripe_size));
lov_dump_lmm_common(D_WARNING, lmm);
return -EINVAL;
}
return 0;
}
void lov_dump_lmm_v3(int level, struct lov_mds_md_v3 *lmm)
{
lov_dump_lmm_common(level, lmm);
CDEBUG(level, "pool_name "LOV_POOLNAMEF"\n", lmm->lmm_pool_name);
lov_dump_lmm_objects(level, lmm->lmm_objects,
le16_to_cpu(lmm->lmm_stripe_count));
}
static int lsm_lmm_verify_v3(struct lov_mds_md *lmmv1, int lmm_bytes,
__u16 *stripe_count)
{
struct lov_mds_md_v3 *lmm;
lmm = (struct lov_mds_md_v3 *)lmmv1;
if (lmm_bytes < sizeof(*lmm)) {
CERROR("lov_mds_md_v3 too small: %d, need at least %d\n",
lmm_bytes, (int)sizeof(*lmm));
return -EINVAL;
}
*stripe_count = le16_to_cpu(lmm->lmm_stripe_count);
if (lmm_bytes < lov_mds_md_size(*stripe_count, LOV_MAGIC_V3)) {
CERROR("LOV EA V3 too small: %d, need %d\n",
lmm_bytes, lov_mds_md_size(*stripe_count, LOV_MAGIC_V3));
lov_dump_lmm_common(D_WARNING, lmm);
return -EINVAL;
}
return lsm_lmm_verify_common((struct lov_mds_md_v1 *)lmm, lmm_bytes,
*stripe_count);
}
void lov_dump_lmm(int level, void *lmm)
{
int magic;
magic = le32_to_cpu(((struct lov_mds_md *)lmm)->lmm_magic);
switch (magic) {
case LOV_MAGIC_V1:
lov_dump_lmm_v1(level, (struct lov_mds_md_v1 *)lmm);
break;
case LOV_MAGIC_V3:
lov_dump_lmm_v3(level, (struct lov_mds_md_v3 *)lmm);
break;
default:
CDEBUG(level, "unrecognized lmm_magic %x, assuming %x\n",
magic, LOV_MAGIC_V1);
lov_dump_lmm_common(level, lmm);
break;
}
}
static int lsm_lmm_verify_v1(struct lov_mds_md_v1 *lmm, int lmm_bytes,
__u16 *stripe_count)
{
if (lmm_bytes < sizeof(*lmm)) {
CERROR("lov_mds_md_v1 too small: %d, need at least %d\n",
lmm_bytes, (int)sizeof(*lmm));
return -EINVAL;
}
*stripe_count = le16_to_cpu(lmm->lmm_stripe_count);
if (le32_to_cpu(lmm->lmm_pattern) & LOV_PATTERN_F_RELEASED)
*stripe_count = 0;
if (lmm_bytes < lov_mds_md_size(*stripe_count, LOV_MAGIC_V1)) {
CERROR("LOV EA V1 too small: %d, need %d\n",
lmm_bytes, lov_mds_md_size(*stripe_count, LOV_MAGIC_V1));
lov_dump_lmm_common(D_WARNING, lmm);
return -EINVAL;
}
return lsm_lmm_verify_common(lmm, lmm_bytes, *stripe_count);
}
void lov_dump_lmm_v1(int level, struct lov_mds_md_v1 *lmm)
{
lov_dump_lmm_common(level, lmm);
lov_dump_lmm_objects(level, lmm->lmm_objects,
le16_to_cpu(lmm->lmm_stripe_count));
}