static int __lov_setstripe(struct obd_export *exp, int max_lmm_size,
struct lov_stripe_md **lsmp,
struct lov_user_md *lump)
{
struct obd_device *obd = class_exp2obd(exp);
struct lov_obd *lov = &obd->u.lov;
char buffer[sizeof(struct lov_user_md_v3)];
struct lov_user_md_v3 *lumv3 = (struct lov_user_md_v3 *)&buffer[0];
struct lov_user_md_v1 *lumv1 = (struct lov_user_md_v1 *)&buffer[0];
int lmm_magic;
__u16 stripe_count;
int rc;
int cplen = 0;
rc = lov_lum_swab_if_needed(lumv3, &lmm_magic, lump);
if (rc)
return rc;
/* in the rest of the tests, as *lumv1 and lumv3 have the same
* fields, we use lumv1 to avoid code duplication */
if (lumv1->lmm_pattern == 0) {
lumv1->lmm_pattern = lov->desc.ld_pattern ?
lov->desc.ld_pattern : LOV_PATTERN_RAID0;
}
if (lov_pattern(lumv1->lmm_pattern) != LOV_PATTERN_RAID0) {
CDEBUG(D_IOCTL, "bad userland stripe pattern: %#x\n",
lumv1->lmm_pattern);
return -EINVAL;
}
/* 64kB is the largest common page size we see (ia64), and matches the
* check in lfs */
if (lumv1->lmm_stripe_size & (LOV_MIN_STRIPE_SIZE - 1)) {
CDEBUG(D_IOCTL, "stripe size %u not multiple of %u, fixing\n",
lumv1->lmm_stripe_size, LOV_MIN_STRIPE_SIZE);
lumv1->lmm_stripe_size = LOV_MIN_STRIPE_SIZE;
}
if ((lumv1->lmm_stripe_offset >= lov->desc.ld_tgt_count) &&
(lumv1->lmm_stripe_offset !=
(typeof(lumv1->lmm_stripe_offset))(-1))) {
CDEBUG(D_IOCTL, "stripe offset %u > number of OSTs %u\n",
lumv1->lmm_stripe_offset, lov->desc.ld_tgt_count);
return -EINVAL;
}
stripe_count = lov_get_stripecnt(lov, lmm_magic,
lumv1->lmm_stripe_count);
if (max_lmm_size) {
int max_stripes = (max_lmm_size -
lov_mds_md_size(0, lmm_magic)) /
sizeof(struct lov_ost_data_v1);
if (unlikely(max_stripes < stripe_count)) {
CDEBUG(D_IOCTL, "stripe count reset from %d to %d\n",
stripe_count, max_stripes);
stripe_count = max_stripes;
}
}
if (lmm_magic == LOV_USER_MAGIC_V3) {
struct pool_desc *pool;
/* In the function below, .hs_keycmp resolves to
* pool_hashkey_keycmp() */
/* coverity[overrun-buffer-val] */
pool = lov_find_pool(lov, lumv3->lmm_pool_name);
if (pool != NULL) {
if (lumv3->lmm_stripe_offset !=
(typeof(lumv3->lmm_stripe_offset))(-1)) {
rc = lov_check_index_in_pool(
lumv3->lmm_stripe_offset, pool);
if (rc < 0) {
lov_pool_putref(pool);
return -EINVAL;
}
}
if (stripe_count > pool_tgt_count(pool))
stripe_count = pool_tgt_count(pool);
lov_pool_putref(pool);
}
}
if (lumv1->lmm_pattern & LOV_PATTERN_F_RELEASED)
stripe_count = 0;
rc = lov_alloc_memmd(lsmp, stripe_count, lumv1->lmm_pattern, lmm_magic);
if (rc >= 0) {
(*lsmp)->lsm_oinfo[0]->loi_ost_idx = lumv1->lmm_stripe_offset;
(*lsmp)->lsm_stripe_size = lumv1->lmm_stripe_size;
if (lmm_magic == LOV_USER_MAGIC_V3) {
cplen = strlcpy((*lsmp)->lsm_pool_name,
lumv3->lmm_pool_name,
sizeof((*lsmp)->lsm_pool_name));
if (cplen >= sizeof((*lsmp)->lsm_pool_name))
rc = -E2BIG;
}
rc = 0;
}
return rc;
}
static int __lov_setstripe(struct obd_export *exp, int max_lmm_size,
struct lov_stripe_md **lsmp,
struct lov_user_md *lump)
{
struct obd_device *obd = class_exp2obd(exp);
struct lov_obd *lov = &obd->u.lov;
char buffer[sizeof(struct lov_user_md_v3)];
struct lov_user_md_v3 *lumv3 = (struct lov_user_md_v3 *)&buffer[0];
struct lov_user_md_v1 *lumv1 = (struct lov_user_md_v1 *)&buffer[0];
int lmm_magic;
int stripe_count;
int rc;
ENTRY;
if (cfs_copy_from_user(lumv3, lump, sizeof(struct lov_user_md_v1)))
RETURN(-EFAULT);
lmm_magic = lumv1->lmm_magic;
if (lmm_magic == __swab32(LOV_USER_MAGIC_V1)) {
lustre_swab_lov_user_md_v1(lumv1);
lmm_magic = LOV_USER_MAGIC_V1;
} else if (lmm_magic == LOV_USER_MAGIC_V3) {
if (cfs_copy_from_user(lumv3, lump, sizeof(*lumv3)))
RETURN(-EFAULT);
} else if (lmm_magic == __swab32(LOV_USER_MAGIC_V3)) {
if (cfs_copy_from_user(lumv3, lump, sizeof(*lumv3)))
RETURN(-EFAULT);
lustre_swab_lov_user_md_v3(lumv3);
lmm_magic = LOV_USER_MAGIC_V3;
} else if (lmm_magic != LOV_USER_MAGIC_V1) {
CDEBUG(D_IOCTL,
"bad userland LOV MAGIC: %#08x != %#08x nor %#08x\n",
lmm_magic, LOV_USER_MAGIC_V1, LOV_USER_MAGIC_V3);
RETURN(-EINVAL);
}
/* in the rest of the tests, as *lumv1 and lumv3 have the same
* fields, we use lumv1 to avoid code duplication */
if (lumv1->lmm_pattern == 0) {
lumv1->lmm_pattern = lov->desc.ld_pattern ?
lov->desc.ld_pattern : LOV_PATTERN_RAID0;
}
if (lumv1->lmm_pattern != LOV_PATTERN_RAID0) {
CDEBUG(D_IOCTL, "bad userland stripe pattern: %#x\n",
lumv1->lmm_pattern);
RETURN(-EINVAL);
}
/* 64kB is the largest common page size we see (ia64), and matches the
* check in lfs */
if (lumv1->lmm_stripe_size & (LOV_MIN_STRIPE_SIZE - 1)) {
CDEBUG(D_IOCTL, "stripe size %u not multiple of %u, fixing\n",
lumv1->lmm_stripe_size, LOV_MIN_STRIPE_SIZE);
lumv1->lmm_stripe_size = LOV_MIN_STRIPE_SIZE;
}
if ((lumv1->lmm_stripe_offset >= lov->desc.ld_tgt_count) &&
(lumv1->lmm_stripe_offset !=
(typeof(lumv1->lmm_stripe_offset))(-1))) {
CDEBUG(D_IOCTL, "stripe offset %u > number of OSTs %u\n",
lumv1->lmm_stripe_offset, lov->desc.ld_tgt_count);
RETURN(-EINVAL);
}
stripe_count = lov_get_stripecnt(lov, lumv1->lmm_stripe_count);
if (max_lmm_size) {
int max_stripes = (max_lmm_size -
lov_mds_md_size(0, lmm_magic)) /
sizeof(struct lov_ost_data_v1);
if (unlikely(max_stripes < stripe_count)) {
CDEBUG(D_IOCTL, "stripe count reset from %d to %d\n",
stripe_count, max_stripes);
stripe_count = max_stripes;
}
}
if (lmm_magic == LOV_USER_MAGIC_V3) {
struct pool_desc *pool;
pool = lov_find_pool(lov, lumv3->lmm_pool_name);
if (pool != NULL) {
if (lumv3->lmm_stripe_offset !=
(typeof(lumv3->lmm_stripe_offset))(-1)) {
rc = lov_check_index_in_pool(
lumv3->lmm_stripe_offset, pool);
if (rc < 0) {
lov_pool_putref(pool);
RETURN(-EINVAL);
}
}
if (stripe_count > pool_tgt_count(pool))
stripe_count = pool_tgt_count(pool);
lov_pool_putref(pool);
}
}
rc = lov_alloc_memmd(lsmp, stripe_count, lumv1->lmm_pattern, lmm_magic);
if (rc >= 0) {
(*lsmp)->lsm_oinfo[0]->loi_ost_idx = lumv1->lmm_stripe_offset;
(*lsmp)->lsm_stripe_size = lumv1->lmm_stripe_size;
if (lmm_magic == LOV_USER_MAGIC_V3)
strncpy((*lsmp)->lsm_pool_name, lumv3->lmm_pool_name,
LOV_MAXPOOLNAME);
rc = 0;
}
RETURN(rc);
}