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Initial import of libiscsi

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This commit is contained in:
Ronnie Sahlberg
2010-12-05 08:24:57 +11:00
commit 098bc5a9a7
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218
src/iscsi-inq.c Normal file
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/*
Copyright (C) 2010 by Ronnie Sahlberg <ronniesahlberg@gmail.com>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, see <http://www.gnu.org/licenses/>.
*/
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <string.h>
#include <poll.h>
#include <popt.h>
#include "iscsi.h"
#include "scsi-lowlevel.h"
char *initiator = "iqn.2010-11.ronnie:iscsi-inq";
void inquiry_block_device_characteristics(struct scsi_inquiry_block_device_characteristics *inq)
{
printf("Medium Rotation Rate:%dRPM\n", inq->medium_rotation_rate);
}
void inquiry_device_identification(struct scsi_inquiry_device_identification *inq)
{
struct scsi_inquiry_device_designator *dev;
int i;
printf("Peripheral Qualifier:%s\n",
scsi_devqualifier_to_str(inq->periperal_qualifier));
printf("Peripheral Device Type:%s\n",
scsi_devtype_to_str(inq->periperal_device_type));
printf("Page Code:(0x%02x) %s\n",
inq->pagecode, scsi_inquiry_pagecode_to_str(inq->pagecode));
for (i=0, dev = inq->designators; dev; i++, dev = dev->next) {
printf("DEVICE DESIGNATOR #%d\n", i);
if (dev->piv != 0) {
printf("Device Protocol Identifier:(%d) %s\n", dev->protocol_identifier, scsi_protocol_identifier_to_str(dev->protocol_identifier));
}
printf("Code Set:(%d) %s\n", dev->code_set, scsi_codeset_to_str(dev->code_set));
printf("PIV:%d\n", dev->piv);
printf("Association:(%d) %s\n", dev->association, scsi_association_to_str(dev->association));
printf("Designator Type:(%d) %s\n", dev->designator_type, scsi_designator_type_to_str(dev->designator_type));
printf("Designator:[%s]\n", dev->designator);
}
}
void inquiry_unit_serial_number(struct scsi_inquiry_unit_serial_number *inq)
{
printf("Unit Serial Number:[%s]\n", inq->usn);
}
void inquiry_supported_pages(struct scsi_inquiry_supported_pages *inq)
{
int i;
for (i = 0; i < inq->num_pages; i++) {
printf("Page:0x%02x %s\n", inq->pages[i], scsi_inquiry_pagecode_to_str(inq->pages[i]));
}
}
void inquiry_standard(struct scsi_inquiry_standard *inq)
{
printf("Peripheral Qualifier:%s\n",
scsi_devqualifier_to_str(inq->periperal_qualifier));
printf("Peripheral Device Type:%s\n",
scsi_devtype_to_str(inq->periperal_device_type));
printf("Removable:%d\n", inq->rmb);
printf("Version:%d %s\n", inq->version, scsi_version_to_str(inq->version));
printf("NormACA:%d\n", inq->normaca);
printf("HiSup:%d\n", inq->hisup);
printf("ReponseDataFormat:%d\n", inq->response_data_format);
printf("SCCS:%d\n", inq->sccs);
printf("ACC:%d\n", inq->acc);
printf("TPGS:%d\n", inq->tpgs);
printf("3PC:%d\n", inq->threepc);
printf("Protect:%d\n", inq->protect);
printf("EncServ:%d\n", inq->encserv);
printf("MultiP:%d\n", inq->multip);
printf("SYNC:%d\n", inq->sync);
printf("CmdQue:%d\n", inq->cmdque);
printf("Vendor:%s\n", inq->vendor_identification);
printf("Product:%s\n", inq->product_identification);
printf("Revision:%s\n", inq->product_revision_level);
}
void do_inquiry(struct iscsi_context *iscsi, int lun, int evpd, int pc)
{
struct scsi_task *task;
int full_size;
void *inq;
/* See how big this inquiry data is */
task = iscsi_inquiry_sync(iscsi, lun, evpd, pc, 64);
if (task == NULL || task->status != SCSI_STATUS_GOOD) {
fprintf(stderr, "Inquiry command failed : %s\n", iscsi_get_error(iscsi));
exit(10);
}
full_size = scsi_datain_getfullsize(task);
if (full_size > task->datain.size) {
scsi_free_scsi_task(task);
/* we need more data for the full list */
if ((task = iscsi_inquiry_sync(iscsi, lun, evpd, pc, full_size)) == NULL) {
fprintf(stderr, "Inquiry command failed : %s\n", iscsi_get_error(iscsi));
exit(10);
}
}
inq = scsi_datain_unmarshall(task);
if (inq == NULL) {
fprintf(stderr, "failed to unmarshall inquiry datain blob\n");
exit(10);
}
if (evpd == 0) {
inquiry_standard(inq);
} else {
switch (pc) {
case SCSI_INQUIRY_PAGECODE_SUPPORTED_VPD_PAGES:
inquiry_supported_pages(inq);
break;
case SCSI_INQUIRY_PAGECODE_UNIT_SERIAL_NUMBER:
inquiry_unit_serial_number(inq);
break;
case SCSI_INQUIRY_PAGECODE_DEVICE_IDENTIFICATION:
inquiry_device_identification(inq);
break;
case SCSI_INQUIRY_PAGECODE_BLOCK_DEVICE_CHARACTERISTICS:
inquiry_block_device_characteristics(inq);
break;
default:
fprintf(stderr, "Usupported pagecode:0x%02x\n", pc);
}
}
scsi_free_scsi_task(task);
}
int main(int argc, const char *argv[])
{
poptContext pc;
struct iscsi_context *iscsi;
char *portal = NULL;
char *target = NULL;
int lun = -1, evpd = 0, pagecode = 0;
int res;
struct poptOption popt_options[] = {
POPT_AUTOHELP
{ "initiator-name", 'i', POPT_ARG_STRING, &initiator, 0, "Initiatorname to use", "iqn-name" },
{ "portal", 'p', POPT_ARG_STRING, &portal, 0, "Target portal", "address[:port]" },
{ "target", 't', POPT_ARG_STRING, &target, 0, "Target name", "iqn-name" },
{ "lun", 'l', POPT_ARG_INT, &lun, 0, "LUN", "integer" },
{ "evpd", 'e', POPT_ARG_INT, &evpd, 0, "evpd", "integer" },
{ "pagecode", 'c', POPT_ARG_INT, &pagecode, 0, "page code", "integer" },
POPT_TABLEEND
};
pc = poptGetContext(argv[0], argc, argv, popt_options, POPT_CONTEXT_POSIXMEHARDER);
if ((res = poptGetNextOpt(pc)) < -1) {
fprintf(stderr, "Failed to parse option : %s %s\n",
poptBadOption(pc, 0), poptStrerror(res));
exit(10);
}
poptFreeContext(pc);
if (portal == NULL) {
fprintf(stderr, "You must specify target portal\n");
exit(10);
}
if (target == NULL) {
fprintf(stderr, "You must specify target name\n");
exit(10);
}
if (lun == -1) {
fprintf(stderr, "You must specify LUN\n");
exit(10);
}
iscsi = iscsi_create_context(initiator);
if (iscsi == NULL) {
fprintf(stderr, "Failed to create context\n");
exit(10);
}
iscsi_set_targetname(iscsi, target);
iscsi_set_session_type(iscsi, ISCSI_SESSION_NORMAL);
iscsi_set_header_digest(iscsi, ISCSI_HEADER_DIGEST_NONE_CRC32C);
if (iscsi_full_connect_sync(iscsi, portal, lun) != 0) {
fprintf(stderr, "Failed to log in to target %s\n", iscsi_get_error(iscsi));
exit(10);
}
do_inquiry(iscsi, lun, evpd, pagecode);
iscsi_logout_sync(iscsi);
iscsi_destroy_context(iscsi);
return 0;
}

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/*
Copyright (C) 2010 by Ronnie Sahlberg <ronniesahlberg@gmail.com>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, see <http://www.gnu.org/licenses/>.
*/
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <string.h>
#include <poll.h>
#include <popt.h>
#include "iscsi.h"
#include "scsi-lowlevel.h"
int showluns;
char *initiator = "iqn.2010-11.ronnie:iscsi-ls";
struct client_state {
int finished;
int status;
int lun;
int type;
};
void event_loop(struct iscsi_context *iscsi, struct client_state *state)
{
struct pollfd pfd;
while (state->finished == 0) {
pfd.fd = iscsi_get_fd(iscsi);
pfd.events = iscsi_which_events(iscsi);
if (poll(&pfd, 1, -1) < 0) {
fprintf(stderr, "Poll failed");
exit(10);
}
if (iscsi_service(iscsi, pfd.revents) < 0) {
fprintf(stderr, "iscsi_service failed with : %s\n", iscsi_get_error(iscsi));
exit(10);
}
}
}
void show_lun(struct iscsi_context *iscsi, int lun)
{
struct scsi_task *task;
struct scsi_inquiry_standard *inq;
int type;
long long size = 0;
int size_pf = 0;
static const char sf[] = {' ', 'k', 'M', 'G', 'T' };
/* check we can talk to the lun */
tur_try_again:
if ((task = iscsi_testunitready_sync(iscsi, lun)) == NULL) {
fprintf(stderr, "testunitready failed\n");
exit(10);
}
if (task->status == SCSI_STATUS_CHECK_CONDITION) {
if (task->sense.key == SCSI_SENSE_UNIT_ATTENTION && task->sense.ascq == SCSI_SENSE_ASCQ_BUS_RESET) {
scsi_free_scsi_task(task);
goto tur_try_again;
}
}
if (task->status != SCSI_STATUS_GOOD) {
fprintf(stderr, "TESTUNITREADY failed with %s\n", iscsi_get_error(iscsi));
exit(10);
}
scsi_free_scsi_task(task);
/* check what type of lun we have */
task = iscsi_inquiry_sync(iscsi, lun, 0, 0, 64);
if (task == NULL || task->status != SCSI_STATUS_GOOD) {
fprintf(stderr, "failed to send inquiry command : %s\n", iscsi_get_error(iscsi));
exit(10);
}
inq = scsi_datain_unmarshall(task);
if (inq == NULL) {
fprintf(stderr, "failed to unmarshall inquiry datain blob\n");
exit(10);
}
type = inq->periperal_device_type;
scsi_free_scsi_task(task);
if (type == SCSI_INQUIRY_PERIPHERAL_DEVICE_TYPE_DIRECT_ACCESS) {
struct scsi_readcapacity10 *rc10;
task = iscsi_readcapacity10_sync(iscsi, lun, 0, 0);
if (task == NULL || task->status != SCSI_STATUS_GOOD) {
fprintf(stderr, "failed to send readcapacity command\n");
exit(10);
}
rc10 = scsi_datain_unmarshall(task);
if (rc10 == NULL) {
fprintf(stderr, "failed to unmarshall readcapacity10 data\n");
exit(10);
}
size = rc10->block_size;
size *= rc10->lba;
for (size_pf=0; size_pf<4 && size > 1024; size_pf++) {
size /= 1024;
}
scsi_free_scsi_task(task);
}
printf("Lun:%-4d Type:%s", lun, scsi_devtype_to_str(type));
if (type == SCSI_INQUIRY_PERIPHERAL_DEVICE_TYPE_DIRECT_ACCESS) {
printf(" (Size:%lld%c)", size, sf[size_pf]);
}
printf("\n");
}
void list_luns(const char *target, const char *portal)
{
struct iscsi_context *iscsi;
struct scsi_task *task;
struct scsi_reportluns_list *list;
int full_report_size;
int i;
iscsi = iscsi_create_context(initiator);
if (iscsi == NULL) {
printf("Failed to create context\n");
exit(10);
}
if (iscsi_set_targetname(iscsi, target)) {
fprintf(stderr, "Failed to set target name\n");
exit(10);
}
iscsi_set_session_type(iscsi, ISCSI_SESSION_NORMAL);
iscsi_set_header_digest(iscsi, ISCSI_HEADER_DIGEST_NONE_CRC32C);
if (iscsi_connect_sync(iscsi, portal) != 0) {
printf("iscsi_connect failed. %s\n", iscsi_get_error(iscsi));
exit(10);
}
if (iscsi_login_sync(iscsi) != 0) {
fprintf(stderr, "login failed :%s\n", iscsi_get_error(iscsi));
exit(10);
}
/* get initial reportluns data, all targets can report 16 bytes but some
* fail if we ask for too much.
*/
if ((task = iscsi_reportluns_sync(iscsi, 0, 16)) == NULL) {
fprintf(stderr, "reportluns failed : %s\n", iscsi_get_error(iscsi));
exit(10);
}
full_report_size = scsi_datain_getfullsize(task);
if (full_report_size > task->datain.size) {
scsi_free_scsi_task(task);
/* we need more data for the full list */
if ((task = iscsi_reportluns_sync(iscsi, 0, full_report_size)) == NULL) {
fprintf(stderr, "reportluns failed : %s\n", iscsi_get_error(iscsi));
exit(10);
}
}
list = scsi_datain_unmarshall(task);
if (list == NULL) {
fprintf(stderr, "failed to unmarshall reportluns datain blob\n");
exit(10);
}
for (i=0; i < (int)list->num; i++) {
show_lun(iscsi, list->luns[i]);
}
scsi_free_scsi_task(task);
iscsi_destroy_context(iscsi);
}
void discoverylogout_cb(struct iscsi_context *iscsi, int status, void *command_data _U_, void *private_data)
{
struct client_state *state = (struct client_state *)private_data;
if (status != 0) {
fprintf(stderr, "Failed to logout from target. : %s\n", iscsi_get_error(iscsi));
exit(10);
}
if (iscsi_disconnect(iscsi) != 0) {
fprintf(stderr, "Failed to disconnect old socket\n");
exit(10);
}
state->finished = 1;
}
void discovery_cb(struct iscsi_context *iscsi, int status, void *command_data, void *private_data)
{
struct iscsi_discovery_address *addr;
if (status != 0) {
fprintf(stderr, "Failed to do discovery on target. : %s\n", iscsi_get_error(iscsi));
exit(10);
}
for(addr=command_data; addr; addr=addr->next) {
printf("Target:%s Portal:%s\n", addr->target_name, addr->target_address);
if (showluns != 0) {
list_luns(addr->target_name, addr->target_address);
}
}
if (iscsi_logout_async(iscsi, discoverylogout_cb, private_data) != 0) {
fprintf(stderr, "iscsi_logout_async failed : %s\n", iscsi_get_error(iscsi));
exit(10);
}
}
void discoverylogin_cb(struct iscsi_context *iscsi, int status, void *command_data _U_, void *private_data)
{
if (status != 0) {
fprintf(stderr, "Failed to log in to target. : %s\n", iscsi_get_error(iscsi));
exit(10);
}
if (iscsi_discovery_async(iscsi, discovery_cb, private_data) != 0) {
fprintf(stderr, "failed to send discovery command : %s\n", iscsi_get_error(iscsi));
exit(10);
}
}
void discoveryconnect_cb(struct iscsi_context *iscsi, int status, void *command_data _U_, void *private_data)
{
if (status != 0) {
fprintf(stderr, "discoveryconnect_cb: connection failed : %s\n", iscsi_get_error(iscsi));
exit(10);
}
if (iscsi_login_async(iscsi, discoverylogin_cb, private_data) != 0) {
fprintf(stderr, "iscsi_login_async failed : %s\n", iscsi_get_error(iscsi));
exit(10);
}
}
int main(int argc, const char *argv[])
{
struct iscsi_context *iscsi;
struct client_state state;
char *portal = NULL;
poptContext pc;
int res;
struct poptOption popt_options[] = {
POPT_AUTOHELP
{ "initiator-name", 'i', POPT_ARG_STRING, &initiator, 0, "Initiatorname to use", "iqn-name" },
{ "portal", 'p', POPT_ARG_STRING, &portal, 0, "Target portal", "address[:port]" },
{ "show-luns", 's', POPT_ARG_NONE, &showluns, 0, "Show the luns for each target", NULL },
POPT_TABLEEND
};
bzero(&state, sizeof(state));
pc = poptGetContext(argv[0], argc, argv, popt_options, POPT_CONTEXT_POSIXMEHARDER);
if ((res = poptGetNextOpt(pc)) < -1) {
fprintf(stderr, "Failed to parse option : %s %s\n",
poptBadOption(pc, 0), poptStrerror(res));
exit(10);
}
poptFreeContext(pc);
if (portal == NULL) {
fprintf(stderr, "You must specify target portal\n");
exit(10);
}
iscsi = iscsi_create_context(initiator);
if (iscsi == NULL) {
printf("Failed to create context\n");
exit(10);
}
iscsi_set_session_type(iscsi, ISCSI_SESSION_DISCOVERY);
if (iscsi_connect_async(iscsi, portal, discoveryconnect_cb, &state) != 0) {
fprintf(stderr, "iscsi_connect failed. %s\n", iscsi_get_error(iscsi));
exit(10);
}
event_loop(iscsi, &state);
iscsi_destroy_context(iscsi);
return 0;
}