190ea92810
thing "Failed to login to target" several times as the error cascades up through the layers of callbacks.
126 lines
3.3 KiB
C
126 lines
3.3 KiB
C
/*
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Copyright (C) 2010 by Ronnie Sahlberg <ronniesahlberg@gmail.com>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with this program; if not, see <http://www.gnu.org/licenses/>.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <errno.h>
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#include "iscsi.h"
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#include "iscsi-private.h"
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#include "scsi-lowlevel.h"
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struct connect_task {
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iscsi_command_cb cb;
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void *private_data;
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int lun;
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};
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static void
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iscsi_testunitready_cb(struct iscsi_context *iscsi, int status,
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void *command_data, void *private_data)
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{
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struct connect_task *ct = private_data;
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if (status != 0) {
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struct scsi_task *scsi = command_data;
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if (scsi->sense.key == SCSI_SENSE_UNIT_ATTENTION
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&& scsi->sense.ascq == SCSI_SENSE_ASCQ_BUS_RESET) {
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/* This is just the normal unitattention/busreset
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* you always get just after a fresh login. Try
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* again.
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*/
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if (iscsi_testunitready_async(iscsi, ct->lun,
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iscsi_testunitready_cb,
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ct) != 0) {
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iscsi_set_error(iscsi, "iscsi_testunitready "
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"failed.");
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ct->cb(iscsi, SCSI_STATUS_ERROR, NULL,
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ct->private_data);
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free(ct);
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}
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return;
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}
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}
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ct->cb(iscsi, status?SCSI_STATUS_ERROR:SCSI_STATUS_GOOD, NULL,
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ct->private_data);
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free(ct);
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}
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static void
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iscsi_login_cb(struct iscsi_context *iscsi, int status, void *command_data _U_,
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void *private_data)
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{
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struct connect_task *ct = private_data;
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if (status != 0) {
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ct->cb(iscsi, SCSI_STATUS_ERROR, NULL, ct->private_data);
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free(ct);
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return;
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}
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if (iscsi_testunitready_async(iscsi, ct->lun,
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iscsi_testunitready_cb, ct) != 0) {
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iscsi_set_error(iscsi, "iscsi_testunitready_async failed.");
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ct->cb(iscsi, SCSI_STATUS_ERROR, NULL, ct->private_data);
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free(ct);
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}
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}
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static void
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iscsi_connect_cb(struct iscsi_context *iscsi, int status, void *command_data _U_,
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void *private_data)
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{
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struct connect_task *ct = private_data;
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if (status != 0) {
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iscsi_set_error(iscsi, "Failed to connect to iSCSI socket. "
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"%s", iscsi_get_error(iscsi));
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ct->cb(iscsi, SCSI_STATUS_ERROR, NULL, ct->private_data);
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free(ct);
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return;
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}
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if (iscsi_login_async(iscsi, iscsi_login_cb, ct) != 0) {
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iscsi_set_error(iscsi, "iscsi_login_async failed.");
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ct->cb(iscsi, SCSI_STATUS_ERROR, NULL, ct->private_data);
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free(ct);
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}
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}
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int
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iscsi_full_connect_async(struct iscsi_context *iscsi, const char *portal,
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int lun, iscsi_command_cb cb, void *private_data)
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{
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struct connect_task *ct;
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ct = malloc(sizeof(struct connect_task));
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if (ct == NULL) {
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iscsi_set_error(iscsi, "Out-of-memory. Failed to allocate "
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"connect_task structure.");
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return -ENOMEM;
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}
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ct->cb = cb;
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ct->lun = lun;
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ct->private_data = private_data;
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if (iscsi_connect_async(iscsi, portal, iscsi_connect_cb, ct) != 0) {
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free(ct);
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return -ENOMEM;
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}
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return 0;
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}
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