struct pfl_opstat *
pfl_opstat_initf(int flags, const char *namefmt, ...)
{
struct pfl_opstat *opst;
int sz, pos;
va_list ap;
char *name = pfl_opstat_name;
spinlock(&pfl_opstats_lock);
va_start(ap, namefmt);
sz = vsnprintf(name, 128, namefmt, ap) + 1;
va_end(ap);
/* (gdb) p ((struct pfl_opstat *)pfl_opstats.pda_items[74]).opst_name */
pos = psc_dynarray_bsearch(&pfl_opstats, name, _pfl_opstat_cmp);
if (pos < psc_dynarray_len(&pfl_opstats)) {
opst = psc_dynarray_getpos(&pfl_opstats, pos);
if (strcmp(name, opst->opst_name) == 0) {
pfl_assert((flags & OPSTF_EXCL) == 0);
freelock(&pfl_opstats_lock);
return (opst);
}
}
pfl_opstats_sum++;
opst = PSCALLOC(sizeof(*opst) + sz);
strlcpy(opst->opst_name, name, 128);
opst->opst_flags = flags;
psc_dynarray_splice(&pfl_opstats, pos, 0, &opst, 1);
freelock(&pfl_opstats_lock);
return (opst);
}
/*
* Find the position of an item in a sorted dynarray.
* @pda: sorted dynamic array to search.
* @item: item contained within whose array index is desired.
* @cmpf: comparison routine.
* Returns the item's index into the array. If the item is not in the
* dynarray, the index value returned is the position the element should
* take on to maintain sort order.
*
* XXX this should be changed to use bsearch_ceil().
*/
int
psc_dynarray_bsearch(const struct psc_dynarray *pda, const void *item,
int (*cmpf)(const void *, const void *))
{
int rc, min, max, mid;
void *p;
min = mid = 0;
max = psc_dynarray_len(pda) - 1;
while (min <= max) {
mid = (max + min) / 2;
p = psc_dynarray_getpos(pda, mid);
rc = cmpf(item, p);
if (rc < 0)
max = mid - 1;
else if (rc > 0) {
min = mid + 1;
/*
* If the item doesn't exist, inform caller that
* the position the item should take on is after
* this mid index.
*/
mid++;
} else
break;
}
return (mid);
}
int
slc_fcmh_ctor(struct fidc_membh *f, __unusedx int flags)
{
struct fcmh_cli_info *fci;
struct sl_resource *res;
struct sl_site *s;
sl_siteid_t siteid;
int i;
fci = fcmh_get_pri(f);
slc_fcmh_refresh_age(f);
INIT_PSC_LISTENTRY(&fci->fci_lentry);
siteid = FID_GET_SITEID(fcmh_2_fid(f));
psc_assert(f->fcmh_flags & FCMH_INITING);
if (fcmh_2_fid(f) != SLFID_ROOT &&
siteid != msl_rmc_resm->resm_siteid) {
s = libsl_siteid2site(siteid);
if (s == NULL) {
psclog_errorx("fid "SLPRI_FID" has "
"invalid site ID %d",
fcmh_2_fid(f), siteid);
return (ESTALE);
}
SITE_FOREACH_RES(s, res, i)
if (res->res_type == SLREST_MDS) {
fci->fci_resm = psc_dynarray_getpos(
&res->res_members, 0);
return (0);
}
psclog_errorx("fid "SLPRI_FID" has invalid site ID %d",
fcmh_2_fid(f), siteid);
return (ESTALE);
}
int
sli_rmi_setmds(const char *name)
{
struct slashrpc_cservice *csvc;
struct sl_resource *res;
// struct sl_resm *old;
lnet_nid_t nid;
/* XXX kill any old MDS and purge any bmap updates being held */
// slconnthr_unwatch(rmi_resm->resm_csvc);
// old = rmi_resm;
// sl_csvc_disable(old->resm_csvc);
nid = libcfs_str2nid(name);
if (nid == LNET_NID_ANY) {
res = libsl_str2res(name);
if (res == NULL)
return (SLERR_RES_UNKNOWN);
rmi_resm = psc_dynarray_getpos(&res->res_members, 0);
} else
rmi_resm = libsl_nid2resm(nid);
if (sli_rmi_getcsvc(&csvc))
psclog_errorx("error connecting to MDS");
else {
slconnthr_watch(sliconnthr, csvc, CSVCF_PING, NULL,
NULL);
sl_csvc_decref(csvc);
}
return (0);
}
/*
* Remove a module from the file system processing stack.
*/
struct pscfs *
pflfs_module_remove(int pos)
{
struct pscfs *m;
m = psc_dynarray_getpos(&pscfs_modules, pos);
psc_dynarray_splice(&pscfs_modules, pos, 1, NULL, 0);
return (m);
}
const char *
psc_subsys_name(int ssid)
{
const struct psc_subsys *ss;
if (ssid < 0 || ssid >= psc_dynarray_len(&psc_subsystems))
return ("<unknown>");
ss = psc_dynarray_getpos(&psc_subsystems, ssid);
return (ss->pss_name);
}
void
pfl_opstat_destroy_pos(int pos)
{
struct pfl_opstat *opst;
LOCK_ENSURE(&pfl_opstats_lock);
opst = psc_dynarray_getpos(&pfl_opstats, pos);
psc_dynarray_splice(&pfl_opstats, pos, 1, NULL, 0);
PSCFREE(opst);
}
void
pfl_opstat_destroy(struct pfl_opstat *opst)
{
int pos;
spinlock(&pfl_opstats_lock);
pos = psc_dynarray_bsearch(&pfl_opstats, opst->opst_name,
_pfl_opstat_cmp);
pfl_assert(psc_dynarray_getpos(&pfl_opstats, pos) == opst);
pfl_opstat_destroy_pos(pos);
freelock(&pfl_opstats_lock);
}
/*
* Duplicate items in one dynarray to another.
* @pda: dynamic array to copy to.
* @src: dynamic array to copy from.
*/
int
psc_dynarray_concat(struct psc_dynarray *pda,
const struct psc_dynarray *src)
{
int rc, i;
for (i = 0; i < psc_dynarray_len(src); i++) {
rc = psc_dynarray_add(pda, psc_dynarray_getpos(src, i));
if (rc)
return (rc);
}
return (0);
}
void *
psc_memnode_getkey(struct psc_memnode *pmn, int key)
{
int locked;
void *val;
val = NULL;
locked = reqlock(&pmn->pmn_lock);
if (psc_dynarray_len(&pmn->pmn_keys) > key)
val = psc_dynarray_getpos(&pmn->pmn_keys, key);
ureqlock(&pmn->pmn_lock, locked);
return (val);
}
int
psc_log_getlevel_ss(int ssid)
{
const struct psc_subsys *ss;
if (ssid >= psc_dynarray_len(&psc_subsystems) || ssid < 0) {
/* don't use psclog to avoid loops */
warnx("subsystem out of bounds (%d, max %d)", ssid,
psc_dynarray_len(&psc_subsystems));
abort();
}
ss = psc_dynarray_getpos(&psc_subsystems, ssid);
return (ss->pss_loglevel);
}
/*
* Forward a name space operation to a remote MDS first before
* replicating the operation locally by our callers.
*/
int
slm_rmm_forward_namespace(int op, struct sl_fidgen *fg,
struct sl_fidgen *nfg, char *name, char *newname, uint32_t mode,
const struct slash_creds *crp, struct srt_stat *sstb,
int32_t to_set)
{
struct slashrpc_cservice *csvc = NULL;
struct pscrpc_request *rq = NULL;
struct sl_resm *resm = NULL;
struct srm_forward_req *mq;
struct srm_forward_rep *mp;
struct sl_resource *res;
struct sl_site *site;
int rc, len, i, vfsid;
sl_siteid_t siteid;
if (op != SLM_FORWARD_MKDIR && op != SLM_FORWARD_RMDIR &&
op != SLM_FORWARD_CREATE && op != SLM_FORWARD_UNLINK &&
op != SLM_FORWARD_RENAME && op != SLM_FORWARD_SETATTR &&
op != SLM_FORWARD_SYMLINK)
return (-PFLERR_NOSYS);
rc = slfid_to_vfsid(fg->fg_fid, &vfsid);
if (rc)
return (rc);
siteid = FID_GET_SITEID(fg->fg_fid);
site = libsl_siteid2site(siteid);
if (site == NULL)
return (-EBADF);
SITE_FOREACH_RES(site, res, i) {
if (res->res_type != SLREST_MDS)
continue;
resm = psc_dynarray_getpos(&res->res_members, 0);
break;
}
csvc = slm_getmcsvc_wait(resm);
if (csvc == NULL) {
psclog_info("unable to connect to site %d", siteid);
return (-EIO);
}
rc = SL_RSX_NEWREQ(csvc, SRMT_NAMESPACE_FORWARD, rq, mq, mp);
if (rc)
goto out;
mq->op = op;
mq->fg = *fg;
if (op == SLM_FORWARD_SETATTR) {
mq->to_set = to_set;
mq->req.sstb = *sstb;
} else
strlcpy(mq->req.name, name, sizeof(mq->req.name));
if (op == SLM_FORWARD_RENAME || op == SLM_FORWARD_SYMLINK) {
if (op == SLM_FORWARD_RENAME)
mq->nfg = *nfg;
len = strlen(name) + 1;
strlcpy(mq->req.name + len, newname,
sizeof(mq->req.name) - len);
}
if (op == SLM_FORWARD_MKDIR ||
op == SLM_FORWARD_CREATE ||
op == SLM_FORWARD_SYMLINK) {
mq->mode = mode;
mq->creds.scr_uid = crp->scr_uid;
mq->creds.scr_gid = crp->scr_gid;
}
rc = SL_RSX_WAITREP(csvc, rq, mp);
if (!rc)
rc = mp->rc;
if (!rc && sstb)
*sstb = mp->attr;
out:
if (rq)
pscrpc_req_finished(rq);
if (csvc)
sl_csvc_decref(csvc);
return (rc);
}