int
slm_fcmh_ctor(struct fidc_membh *f, __unusedx int flags)
{
struct fcmh_mds_info *fmi;
struct mio_fh *ino_mfh;
struct slm_inoh *ih;
mio_fid_t ino_mfid;
int rc, vfsid;
DEBUG_FCMH(PLL_DIAG, f, "ctor");
rc = slfid_to_vfsid(fcmh_2_fid(f), &vfsid);
if (rc) {
DEBUG_FCMH(PLL_WARN, f, "invalid file system ID; "
"rc=%d", rc);
return (rc);
}
fmi = fcmh_2_fmi(f);
memset(fmi, 0, sizeof(*fmi));
rc = mdsio_lookup_slfid(vfsid, fcmh_2_fid(f), &rootcreds,
&f->fcmh_sstb, &fcmh_2_mfid(f));
if (rc) {
fmi->fmi_ctor_rc = rc;
DEBUG_FCMH(PLL_WARN, f, "mdsio_lookup_slfid failed; "
"fid="SLPRI_FID" rc=%d",
fcmh_2_fid(f), rc);
return (rc);
}
ih = &fmi->fmi_inodeh;
ih->inoh_flags = INOH_INO_NOTLOADED;
ino_mfid = fcmh_2_mfid(f);
ino_mfh = fcmh_2_mfhp(f);
if (fcmh_isdir(f)) {
mio_fid_t pmfid;
char fn[24];
rc = mdsio_opendir(vfsid, fcmh_2_mfid(f), &rootcreds,
NULL, &fcmh_2_mfh(f));
if (rc) {
DEBUG_FCMH(PLL_WARN, f, "mdsio_opendir failed; "
"mio_fid=%"PRIx64" rc=%d", fcmh_2_mfid(f),
rc);
return (rc);
}
snprintf(fn, sizeof(fn), "%016"PRIx64".ino",
fcmh_2_fid(f));
pmfid = mdsio_getfidlinkdir(fcmh_2_fid(f));
rc = mdsio_lookup(vfsid, pmfid, fn,
&fcmh_2_dino_mfid(f), &rootcreds, NULL);
if (rc == ENOENT) {
struct slm_inox_od inox;
rc = mdsio_opencreatef(vfsid, pmfid, &rootcreds,
O_CREAT | O_EXCL | O_RDWR,
MDSIO_OPENCRF_NOLINK, 0644, fn,
&fcmh_2_dino_mfid(f), NULL,
&fcmh_2_dino_mfh(f), NULL, NULL, 0);
psc_assert(rc == 0);
INOH_LOCK(ih);
rc = mds_inode_write(vfsid, ih, NULL, NULL);
psc_assert(rc == 0);
memset(&inox, 0, sizeof(inox));
ih->inoh_extras = &inox;
rc = mds_inox_write(vfsid, ih, NULL, NULL);
ih->inoh_extras = NULL;
INOH_ULOCK(ih);
psc_assert(rc == 0);
mdsio_release(vfsid, &rootcreds,
fcmh_2_dino_mfh(f));
} else if (rc) {
fmi->fmi_ctor_rc = rc;
DEBUG_FCMH(PLL_WARN, f,
"mdsio_lookup failed; rc=%d", rc);
return (rc);
}
ino_mfid = fcmh_2_dino_mfid(f);
ino_mfh = fcmh_2_dino_mfhp(f);
}
if (fcmh_isreg(f))
psc_dynarray_init(&fmi->fmi_ptrunc_clients);
if (fcmh_isdir(f) || fcmh_isreg(f)) {
/*
* We shouldn't need O_LARGEFILE because SLASH2
* metafiles are small.
*
* I created a file with size of 8070450532247928832
* using dd by seeking to a large offset and writing one
* byte. Somehow, the ZFS size becomes 5119601018368.
* Without O_LARGEFILE, I got EOVERFLOW (75) here. The
* SLASH2 size is correct though.
*/
rc = mdsio_opencreate(vfsid, ino_mfid, &rootcreds,
O_RDWR, 0, NULL, NULL, NULL, &ino_mfh->fh, NULL,
NULL, 0);
if (rc == 0) {
rc = mds_inode_read(&fmi->fmi_inodeh);
if (rc)
DEBUG_FCMH(PLL_WARN, f,
"could not load inode; "
"mfid=%"PRIx64" rc=%d",
ino_mfid, rc);
} else {
fmi->fmi_ctor_rc = rc;
DEBUG_FCMH(PLL_WARN, f,
"mdsio_opencreate failed; "
"mfid=%"PRIx64" rc=%d",
ino_mfid, rc);
}
} else
DEBUG_FCMH(PLL_DIAG, f, "special file, no zfs obj");
return (rc);
}
int
mds_inode_update_interrupted(int vfsid, struct slash_inode_handle *ih,
int *rc)
{
char fn[NAME_MAX + 1];
struct srt_stat sstb;
struct iovec iovs[2];
uint64_t crc, od_crc;
void *h = NULL, *th;
mdsio_fid_t inum;
int exists = 0;
size_t nb;
th = inoh_2_mfh(ih);
snprintf(fn, sizeof(fn), "%016"PRIx64".update",
inoh_2_fid(ih));
*rc = mdsio_lookup(vfsid, mds_tmpdir_inum[vfsid], fn, &inum,
&rootcreds, NULL);
if (*rc)
PFL_GOTOERR(out, *rc);
*rc = mdsio_opencreatef(vfsid, inum, &rootcreds, O_RDONLY,
MDSIO_OPENCRF_NOLINK, 0644, NULL, NULL, NULL, &h, NULL,
NULL, 0);
if (*rc)
PFL_GOTOERR(out, *rc);
iovs[0].iov_base = &ih->inoh_ino;
iovs[0].iov_len = sizeof(ih->inoh_ino);
iovs[1].iov_base = &od_crc;
iovs[1].iov_len = sizeof(od_crc);
*rc = mdsio_preadv(vfsid, &rootcreds, iovs, nitems(iovs), &nb, 0, h);
if (*rc)
PFL_GOTOERR(out, *rc);
psc_crc64_calc(&crc, &ih->inoh_ino, sizeof(ih->inoh_ino));
if (crc != od_crc) {
*rc = PFLERR_BADCRC;
PFL_GOTOERR(out, *rc);
}
exists = 1;
psc_assert(ih->inoh_extras == NULL);
ih->inoh_extras = PSCALLOC(INOX_SZ);
inoh_2_mfh(ih) = h;
*rc = mds_inox_ensure_loaded(ih);
if (*rc)
PFL_GOTOERR(out, *rc);
inoh_2_mfh(ih) = th;
memset(&sstb, 0, sizeof(sstb));
*rc = mdsio_setattr(vfsid, 0, &sstb, SL_SETATTRF_METASIZE,
&rootcreds, NULL, th, NULL);
if (*rc)
PFL_GOTOERR(out, *rc);
*rc = mds_inode_dump(vfsid, NULL, ih, h);
if (*rc)
PFL_GOTOERR(out, *rc);
mdsio_unlink(vfsid, mds_tmpdir_inum[vfsid], NULL, fn,
&rootcreds, NULL, NULL);
out:
if (h)
mdsio_release(vfsid, &rootcreds, h);
if (*rc)
mdsio_unlink(vfsid, mds_tmpdir_inum[vfsid], NULL, fn,
&rootcreds, NULL, NULL);
inoh_2_mfh(ih) = th;
return (exists);
}