int
_mds_fcmh_setattr(int vfsid, struct fidc_membh *f, int to_set,
const struct srt_stat *sstb, int log)
{
struct srt_stat sstb_out;
int rc;
FCMH_LOCK_ENSURE(f);
FCMH_BUSY_ENSURE(f);
FCMH_ULOCK(f);
if (log)
mds_reserve_slot(1);
rc = mdsio_setattr(vfsid, fcmh_2_mfid(f), sstb, to_set,
&rootcreds, &sstb_out, fcmh_2_mfh(f),
log ? mdslog_namespace : NULL);
if (log)
mds_unreserve_slot(1);
if (!rc) {
psc_assert(sstb_out.sst_fid == fcmh_2_fid(f));
FCMH_LOCK(f);
f->fcmh_sstb = sstb_out;
FCMH_ULOCK(f);
}
return (rc);
}
static void
mds_bmap_journal_bmapseq(struct slmds_jent_bmapseq *sjbsq)
{
struct slmds_jent_bmapseq *buf;
buf = pjournal_get_buf(slm_journal,
sizeof(struct slmds_jent_bmapseq));
*buf = *sjbsq;
mds_reserve_slot(1);
pjournal_add_entry(slm_journal, 0, MDS_LOG_BMAP_SEQ, 0, buf,
sizeof(struct slmds_jent_bmapseq));
mds_unreserve_slot(1);
pjournal_put_buf(slm_journal, buf);
}
int
slm_rmc_handle_link(struct pscrpc_request *rq)
{
struct fidc_membh *p = NULL, *c = NULL;
struct srm_link_req *mq;
struct srm_link_rep *mp;
int vfsid;
SL_RSX_ALLOCREP(rq, mq, mp);
mp->rc = slfid_to_vfsid(mq->fg.fg_fid, &vfsid);
if (mp->rc)
PFL_GOTOERR(out, mp->rc);
mp->rc = -slm_fcmh_get(&mq->pfg, &p);
if (mp->rc)
PFL_GOTOERR(out, mp->rc);
mp->rc = -slm_fcmh_get(&mq->fg, &c);
if (mp->rc)
PFL_GOTOERR(out, mp->rc);
mq->name[sizeof(mq->name) - 1] = '\0';
mds_reserve_slot(1);
mp->rc = mdsio_link(vfsid, fcmh_2_mfid(c), fcmh_2_mfid(p),
mq->name, &rootcreds, mdslog_namespace);
mds_unreserve_slot(1);
mdsio_fcmh_refreshattr(c, &mp->cattr);
mdsio_fcmh_refreshattr(p, &mp->pattr);
out:
if (c)
fcmh_op_done(c);
if (p)
fcmh_op_done(p);
return (0);
}
/*
* Handle a NAMESPACE_FORWARD request from another MDS.
*/
int
slm_rmm_handle_namespace_forward(struct pscrpc_request *rq)
{
char *from, *to, *name, *linkname;
struct fidc_membh *p = NULL, *op = NULL, *np = NULL;
struct srm_forward_req *mq;
struct srm_forward_rep *mp;
struct slash_creds cr;
struct srt_stat sstb;
void *mfh;
int vfsid;
p = op = np = NULL;
SL_RSX_ALLOCREP(rq, mq, mp);
if (mq->op != SLM_FORWARD_MKDIR &&
mq->op != SLM_FORWARD_RMDIR &&
mq->op != SLM_FORWARD_CREATE &&
mq->op != SLM_FORWARD_UNLINK &&
mq->op != SLM_FORWARD_SYMLINK &&
mq->op != SLM_FORWARD_RENAME &&
mq->op != SLM_FORWARD_SETATTR) {
mp->rc = -EINVAL;
return (0);
}
psclog_info("op=%d, name=%s", mq->op, mq->req.name);
mp->rc = slfid_to_vfsid(mq->fg.fg_fid, &vfsid);
if (mp->rc)
return (0);
if (current_vfsid != vfsid) {
mp->rc = -EINVAL;
return (0);
}
cr.scr_uid = mq->creds.scr_uid;
cr.scr_gid = mq->creds.scr_gid;
mds_reserve_slot(2);
switch (mq->op) {
case SLM_FORWARD_MKDIR:
mp->rc = slm_fcmh_get(&mq->fg, &p);
if (mp->rc)
break;
sstb.sst_mode = mq->mode;
sstb.sst_uid = mq->creds.scr_uid;
sstb.sst_gid = mq->creds.scr_gid;
mp->rc = -mdsio_mkdir(vfsid, fcmh_2_mfid(p),
mq->req.name, &sstb, 0, 0, &mp->attr, NULL,
mdslog_namespace, slm_get_next_slashfid, 0);
break;
case SLM_FORWARD_CREATE:
mp->rc = slm_fcmh_get(&mq->fg, &p);
if (mp->rc)
break;
mp->rc = mdsio_opencreate(vfsid, fcmh_2_mfid(p),
&cr, O_CREAT | O_EXCL | O_RDWR, mq->mode,
mq->req.name, NULL, &mp->attr, &mfh,
mdslog_namespace, slm_get_next_slashfid, 0);
if (!mp->rc)
mdsio_release(vfsid, &rootcreds, mfh);
break;
case SLM_FORWARD_RMDIR:
mp->rc = slm_fcmh_get(&mq->fg, &p);
if (mp->rc)
break;
mp->rc = mdsio_rmdir(vfsid, fcmh_2_mfid(p), NULL,
mq->req.name, &rootcreds, mdslog_namespace);
break;
case SLM_FORWARD_UNLINK:
mp->rc = slm_fcmh_get(&mq->fg, &p);
if (mp->rc)
break;
mp->rc = -mdsio_unlink(vfsid, fcmh_2_mfid(p), NULL,
mq->req.name, &rootcreds, mdslog_namespace,
&mp->attr);
break;
case SLM_FORWARD_RENAME:
mp->rc = slm_fcmh_get(&mq->fg, &op);
if (mp->rc)
break;
mp->rc = slm_fcmh_get(&mq->nfg, &np);
if (mp->rc)
break;
from = mq->req.name;
to = mq->req.name + strlen(mq->req.name) + 1;
mp->rc = mdsio_rename(vfsid, fcmh_2_mfid(op), from,
fcmh_2_mfid(np), to, &rootcreds,
mdslog_namespace, &mp->attr);
break;
case SLM_FORWARD_SETATTR:
/*
* This is tough because we have some logic at the fcmh
* layer dealing with (partial) truncates. It is not a
* pure namespace operation.
*/
mp->rc = slm_fcmh_get(&mq->fg, &p);
if (mp->rc)
break;
mp->rc = -mdsio_setattr(vfsid, fcmh_2_mfid(p),
&mq->req.sstb, mq->to_set, &rootcreds, &mp->attr,
fcmh_2_mfh(p), mdslog_namespace);
break;
case SLM_FORWARD_SYMLINK:
mp->rc = slm_fcmh_get(&mq->fg, &p);
if (mp->rc)
break;
name = mq->req.name;
linkname = mq->req.name + strlen(mq->req.name) + 1;
mp->rc = mdsio_symlink(vfsid, linkname,
fcmh_2_mfid(p), name, &cr, &mp->attr, NULL,
NULL, slm_get_next_slashfid, 0);
break;
}
mds_unreserve_slot(2);
if (p)
fcmh_op_done(p);
if (op)
fcmh_op_done(op);
if (np)
fcmh_op_done(np);
return (0);
}
