int libcfs_register_ioctl(struct libcfs_ioctl_handler *hand)
{
int rc = 0;
cfs_down_write(&ioctl_list_sem);
if (!cfs_list_empty(&hand->item))
rc = -EBUSY;
else
cfs_list_add_tail(&hand->item, &ioctl_list);
cfs_up_write(&ioctl_list_sem);
return rc;
}
static int mds_quota_fs_cleanup(struct obd_device *obd)
{
struct mds_obd *mds = &obd->u.mds;
struct obd_quotactl oqctl;
ENTRY;
if (unlikely(!mds->mds_quota))
RETURN(0);
mds->mds_quota = 0;
memset(&oqctl, 0, sizeof(oqctl));
oqctl.qc_type = UGQUOTA;
cfs_down_write(&mds->mds_qonoff_sem);
mds_admin_quota_off(obd, &oqctl);
cfs_up_write(&mds->mds_qonoff_sem);
RETURN(0);
}
int llog_ioctl(struct llog_ctxt *ctxt, int cmd, struct obd_ioctl_data *data)
{
struct llog_logid logid;
int err = 0;
struct llog_handle *handle = NULL;
ENTRY;
if (*data->ioc_inlbuf1 == '#') {
err = str2logid(&logid, data->ioc_inlbuf1, data->ioc_inllen1);
if (err)
GOTO(out, err);
err = llog_create(ctxt, &handle, &logid, NULL);
if (err)
GOTO(out, err);
} else if (*data->ioc_inlbuf1 == '$') {
char *name = data->ioc_inlbuf1 + 1;
err = llog_create(ctxt, &handle, NULL, name);
if (err)
GOTO(out, err);
} else {
GOTO(out, err = -EINVAL);
}
err = llog_init_handle(handle, 0, NULL);
if (err)
GOTO(out_close, err = -ENOENT);
switch (cmd) {
case OBD_IOC_LLOG_INFO: {
int l;
int remains = data->ioc_inllen2 +
cfs_size_round(data->ioc_inllen1);
char *out = data->ioc_bulk;
l = snprintf(out, remains,
"logid: #"LPX64"#"LPX64"#%08x\n"
"flags: %x (%s)\n"
"records count: %d\n"
"last index: %d\n",
handle->lgh_id.lgl_oid, handle->lgh_id.lgl_oseq,
handle->lgh_id.lgl_ogen,
handle->lgh_hdr->llh_flags,
handle->lgh_hdr->llh_flags &
LLOG_F_IS_CAT ? "cat" : "plain",
handle->lgh_hdr->llh_count,
handle->lgh_last_idx);
out += l;
remains -= l;
if (remains <= 0)
CERROR("not enough space for log header info\n");
GOTO(out_close, err);
}
case OBD_IOC_LLOG_CHECK: {
LASSERT(data->ioc_inllen1);
err = llog_process(handle, llog_check_cb, data, NULL);
if (err == -LLOG_EEMPTY)
err = 0;
GOTO(out_close, err);
}
case OBD_IOC_LLOG_PRINT: {
LASSERT(data->ioc_inllen1);
err = llog_process(handle, class_config_dump_handler,data,NULL);
if (err == -LLOG_EEMPTY)
err = 0;
else
err = llog_process(handle, llog_print_cb, data, NULL);
GOTO(out_close, err);
}
case OBD_IOC_LLOG_CANCEL: {
struct llog_cookie cookie;
struct llog_logid plain;
char *endp;
cookie.lgc_index = simple_strtoul(data->ioc_inlbuf3, &endp, 0);
if (*endp != '\0')
GOTO(out_close, err = -EINVAL);
if (handle->lgh_hdr->llh_flags & LLOG_F_IS_CAT) {
cfs_down_write(&handle->lgh_lock);
err = llog_cancel_rec(handle, cookie.lgc_index);
cfs_up_write(&handle->lgh_lock);
GOTO(out_close, err);
}
err = str2logid(&plain, data->ioc_inlbuf2, data->ioc_inllen2);
if (err)
GOTO(out_close, err);
cookie.lgc_lgl = plain;
if (!(handle->lgh_hdr->llh_flags & LLOG_F_IS_CAT))
GOTO(out_close, err = -EINVAL);
err = llog_cat_cancel_records(handle, 1, &cookie);
GOTO(out_close, err);
}
case OBD_IOC_LLOG_REMOVE: {
struct llog_logid plain;
if (handle->lgh_hdr->llh_flags & LLOG_F_IS_PLAIN) {
err = llog_destroy(handle);
if (!err)
llog_free_handle(handle);
GOTO(out, err);
}
if (!(handle->lgh_hdr->llh_flags & LLOG_F_IS_CAT))
GOTO(out_close, err = -EINVAL);
if (data->ioc_inlbuf2) {
/*remove indicate log from the catalog*/
err = str2logid(&plain, data->ioc_inlbuf2,
data->ioc_inllen2);
if (err)
GOTO(out_close, err);
err = llog_remove_log(handle, &plain);
} else {
/*remove all the log of the catalog*/
llog_process(handle, llog_delete_cb, NULL, NULL);
}
GOTO(out_close, err);
}
}
out_close:
if (handle->lgh_hdr &&
handle->lgh_hdr->llh_flags & LLOG_F_IS_CAT)
llog_cat_put(handle);
else
llog_close(handle);
out:
RETURN(err);
}
