/*
* IT_OPEN is intended to open (and create, possible) an object. Parent (pid)
* may be split dir.
*/
int lmv_intent_open(struct obd_export *exp, struct md_op_data *op_data,
void *lmm, int lmmsize, struct lookup_intent *it,
int flags, struct ptlrpc_request **reqp,
ldlm_blocking_callback cb_blocking,
__u64 extra_lock_flags)
{
struct obd_device *obd = exp->exp_obd;
struct lmv_obd *lmv = &obd->u.lmv;
struct lmv_tgt_desc *tgt;
struct mdt_body *body;
int rc;
tgt = lmv_locate_mds(lmv, op_data, &op_data->op_fid1);
if (IS_ERR(tgt))
return PTR_ERR(tgt);
/* If it is ready to open the file by FID, do not need
* allocate FID at all, otherwise it will confuse MDT */
if ((it->it_op & IT_CREAT) &&
!(it->it_flags & MDS_OPEN_BY_FID)) {
/*
* For open with IT_CREATE and for IT_CREATE cases allocate new
* fid and setup FLD for it.
*/
op_data->op_fid3 = op_data->op_fid2;
rc = lmv_fid_alloc(exp, &op_data->op_fid2, op_data);
if (rc != 0)
return rc;
}
CDEBUG(D_INODE, "OPEN_INTENT with fid1="DFID", fid2="DFID","
" name='%s' -> mds #%d\n", PFID(&op_data->op_fid1),
PFID(&op_data->op_fid2), op_data->op_name, tgt->ltd_idx);
rc = md_intent_lock(tgt->ltd_exp, op_data, lmm, lmmsize, it, flags,
reqp, cb_blocking, extra_lock_flags);
if (rc != 0)
return rc;
/*
* Nothing is found, do not access body->fid1 as it is zero and thus
* pointless.
*/
if ((it->d.lustre.it_disposition & DISP_LOOKUP_NEG) &&
!(it->d.lustre.it_disposition & DISP_OPEN_CREATE) &&
!(it->d.lustre.it_disposition & DISP_OPEN_OPEN))
return rc;
body = req_capsule_server_get(&(*reqp)->rq_pill, &RMF_MDT_BODY);
if (body == NULL)
return -EPROTO;
/*
* Not cross-ref case, just get out of here.
*/
if (likely(!(body->valid & OBD_MD_MDS)))
return 0;
/*
* Okay, MDS has returned success. Probably name has been resolved in
* remote inode.
*/
rc = lmv_intent_remote(exp, lmm, lmmsize, it, &op_data->op_fid1, flags,
reqp, cb_blocking, extra_lock_flags);
if (rc != 0) {
LASSERT(rc < 0);
/*
* This is possible, that some userspace application will try to
* open file as directory and we will have -ENOTDIR here. As
* this is normal situation, we should not print error here,
* only debug info.
*/
CDEBUG(D_INODE, "Can't handle remote %s: dir "DFID"("DFID"):"
"%*s: %d\n", LL_IT2STR(it), PFID(&op_data->op_fid2),
PFID(&op_data->op_fid1), op_data->op_namelen,
op_data->op_name, rc);
return rc;
}
return rc;
}
/*
* IT_OPEN is intended to open (and create, possible) an object. Parent (pid)
* may be split dir.
*/
static int lmv_intent_open(struct obd_export *exp, struct md_op_data *op_data,
struct lookup_intent *it,
struct ptlrpc_request **reqp,
ldlm_blocking_callback cb_blocking,
__u64 extra_lock_flags)
{
struct obd_device *obd = exp->exp_obd;
struct lmv_obd *lmv = &obd->u.lmv;
struct lmv_tgt_desc *tgt;
struct mdt_body *body;
int rc;
ENTRY;
if (it->it_flags & MDS_OPEN_BY_FID) {
LASSERT(fid_is_sane(&op_data->op_fid2));
/* for striped directory, we can't know parent stripe fid
* without name, but we can set it to child fid, and MDT
* will obtain it from linkea in open in such case. */
if (op_data->op_mea1 != NULL)
op_data->op_fid1 = op_data->op_fid2;
tgt = lmv_find_target(lmv, &op_data->op_fid2);
if (IS_ERR(tgt))
RETURN(PTR_ERR(tgt));
op_data->op_mds = tgt->ltd_idx;
} else {
LASSERT(fid_is_sane(&op_data->op_fid1));
LASSERT(fid_is_zero(&op_data->op_fid2));
LASSERT(op_data->op_name != NULL);
tgt = lmv_locate_mds(lmv, op_data, &op_data->op_fid1);
if (IS_ERR(tgt))
RETURN(PTR_ERR(tgt));
}
/* If it is ready to open the file by FID, do not need
* allocate FID at all, otherwise it will confuse MDT */
if ((it->it_op & IT_CREAT) && !(it->it_flags & MDS_OPEN_BY_FID)) {
/*
* For lookup(IT_CREATE) cases allocate new fid and setup FLD
* for it.
*/
rc = lmv_fid_alloc(NULL, exp, &op_data->op_fid2, op_data);
if (rc != 0)
RETURN(rc);
}
CDEBUG(D_INODE, "OPEN_INTENT with fid1="DFID", fid2="DFID","
" name='%s' -> mds #%u\n", PFID(&op_data->op_fid1),
PFID(&op_data->op_fid2), op_data->op_name, tgt->ltd_idx);
rc = md_intent_lock(tgt->ltd_exp, op_data, it, reqp, cb_blocking,
extra_lock_flags);
if (rc != 0)
RETURN(rc);
/*
* Nothing is found, do not access body->fid1 as it is zero and thus
* pointless.
*/
if ((it->d.lustre.it_disposition & DISP_LOOKUP_NEG) &&
!(it->d.lustre.it_disposition & DISP_OPEN_CREATE) &&
!(it->d.lustre.it_disposition & DISP_OPEN_OPEN))
RETURN(rc);
body = req_capsule_server_get(&(*reqp)->rq_pill, &RMF_MDT_BODY);
if (body == NULL)
RETURN(-EPROTO);
/* Not cross-ref case, just get out of here. */
if (unlikely((body->mbo_valid & OBD_MD_MDS))) {
rc = lmv_intent_remote(exp, it, &op_data->op_fid1, reqp,
cb_blocking, extra_lock_flags);
if (rc != 0)
RETURN(rc);
body = req_capsule_server_get(&(*reqp)->rq_pill, &RMF_MDT_BODY);
if (body == NULL)
RETURN(-EPROTO);
}
RETURN(rc);
}
/*
* IT_OPEN is intended to open (and create, possible) an object. Parent (pid)
* may be split dir.
*/
int lmv_intent_open(struct obd_export *exp, struct md_op_data *op_data,
void *lmm, int lmmsize, struct lookup_intent *it,
int flags, struct ptlrpc_request **reqp,
ldlm_blocking_callback cb_blocking,
__u64 extra_lock_flags)
{
struct obd_device *obd = exp->exp_obd;
struct lmv_obd *lmv = &obd->u.lmv;
struct lmv_tgt_desc *tgt;
struct mdt_body *body;
int rc;
ENTRY;
/* Note: client might open with some random flags(sanity 33b), so we can
* not make sure op_fid2 is being initialized with BY_FID flag */
if (it->it_flags & MDS_OPEN_BY_FID && fid_is_sane(&op_data->op_fid2)) {
if (op_data->op_mea1 != NULL) {
struct lmv_stripe_md *lsm = op_data->op_mea1;
const struct lmv_oinfo *oinfo;
oinfo = lsm_name_to_stripe_info(lsm, op_data->op_name,
op_data->op_namelen);
if (IS_ERR(oinfo))
RETURN(PTR_ERR(oinfo));
op_data->op_fid1 = oinfo->lmo_fid;
}
tgt = lmv_find_target(lmv, &op_data->op_fid2);
if (IS_ERR(tgt))
RETURN(PTR_ERR(tgt));
op_data->op_mds = tgt->ltd_idx;
} else {
tgt = lmv_locate_mds(lmv, op_data, &op_data->op_fid1);
if (IS_ERR(tgt))
RETURN(PTR_ERR(tgt));
}
/* If it is ready to open the file by FID, do not need
* allocate FID at all, otherwise it will confuse MDT */
if ((it->it_op & IT_CREAT) &&
!(it->it_flags & MDS_OPEN_BY_FID)) {
/*
* For open with IT_CREATE and for IT_CREATE cases allocate new
* fid and setup FLD for it.
*/
op_data->op_fid3 = op_data->op_fid2;
rc = lmv_fid_alloc(exp, &op_data->op_fid2, op_data);
if (rc != 0)
RETURN(rc);
}
CDEBUG(D_INODE, "OPEN_INTENT with fid1="DFID", fid2="DFID","
" name='%s' -> mds #%d\n", PFID(&op_data->op_fid1),
PFID(&op_data->op_fid2), op_data->op_name, tgt->ltd_idx);
rc = md_intent_lock(tgt->ltd_exp, op_data, lmm, lmmsize, it, flags,
reqp, cb_blocking, extra_lock_flags);
if (rc != 0)
RETURN(rc);
/*
* Nothing is found, do not access body->fid1 as it is zero and thus
* pointless.
*/
if ((it->d.lustre.it_disposition & DISP_LOOKUP_NEG) &&
!(it->d.lustre.it_disposition & DISP_OPEN_CREATE) &&
!(it->d.lustre.it_disposition & DISP_OPEN_OPEN))
RETURN(rc);
body = req_capsule_server_get(&(*reqp)->rq_pill, &RMF_MDT_BODY);
if (body == NULL)
RETURN(-EPROTO);
/* Not cross-ref case, just get out of here. */
if (unlikely((body->valid & OBD_MD_MDS))) {
rc = lmv_intent_remote(exp, lmm, lmmsize, it, &op_data->op_fid1,
flags, reqp, cb_blocking,
extra_lock_flags);
if (rc != 0)
RETURN(rc);
body = req_capsule_server_get(&(*reqp)->rq_pill, &RMF_MDT_BODY);
if (body == NULL)
RETURN(-EPROTO);
}
RETURN(rc);
}
