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istgt_lu_ctl.c
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/*
* Copyright © 2017-2019 The OpenEBS Authors
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* This work is derived from earlier work available under:
*
* Copyright (C) 2008-2012 Daisuke Aoyama <[email protected]>.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <inttypes.h>
#include <stdint.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <pthread.h>
#ifdef HAVE_PTHREAD_NP_H
#include <pthread_np.h>
#endif
#include <unistd.h>
#include <sys/param.h>
#include "istgt.h"
#include "istgt_ver.h"
#include "istgt_log.h"
#include "istgt_sock.h"
#include "istgt_misc.h"
#include "istgt_md5.h"
#include "istgt_lu.h"
#include "istgt_iscsi.h"
#include "istgt_proto.h"
#ifdef REPLICATION
#include <json-c/json_object.h>
#include "istgt_integration.h"
#include <replication_misc.h>
#endif
#if !defined(__GNUC__)
#undef __attribute__
#define __attribute__(x)
#endif
#define TIMEOUT_RW 60
#define MAX_LINEBUF 4096
// #define MAX_LINEBUF 8192
#ifdef REPLICATION
extern int replication_initialized;
#endif
typedef struct istgt_uctl_t {
int id;
ISTGT_Ptr istgt;
PORTAL portal;
int sock;
int family;
char caddr[MAX_ADDRBUF];
char saddr[MAX_ADDRBUF];
uint32_t iport;
uint32_t iaddr;
ISTGT_CHAP_AUTH auth;
int authenticated;
int timeout;
int auth_group;
int no_auth;
int req_auth;
int req_mutual;
char *mediadirectory;
int recvtmpsize;
int recvtmpcnt;
int recvtmpidx;
int recvbufsize;
int sendbufsize;
int worksize;
char recvtmp[MAX_LINEBUF];
char recvbuf[MAX_LINEBUF];
char sendbuf[MAX_LINEBUF];
char work[MAX_LINEBUF];
char *cmd;
char *arg;
} UCTL;
typedef UCTL *UCTL_Ptr;
typedef enum {
UCTL_CMD_OK = 0,
UCTL_CMD_ERR = 1,
UCTL_CMD_EOF = 2,
UCTL_CMD_QUIT = 3,
UCTL_CMD_DISCON = 4,
} UCTL_CMD_STATUS;
#define ARGS_DELIM " \t"
static int
istgt_uctl_readline(UCTL_Ptr uctl)
{
ssize_t total;
total = istgt_readline_socket(uctl->sock, uctl->recvbuf,
uctl->recvbufsize, uctl->recvtmp, uctl->recvtmpsize,
&uctl->recvtmpidx, &uctl->recvtmpcnt, uctl->timeout);
if (total < 0) {
return (UCTL_CMD_DISCON);
}
if (total == 0) {
return (UCTL_CMD_EOF);
}
return (UCTL_CMD_OK);
}
static int
istgt_uctl_writeline(UCTL_Ptr uctl)
{
ssize_t total;
ssize_t expect;
expect = strlen(uctl->sendbuf);
total = istgt_writeline_socket(uctl->sock, uctl->sendbuf,
uctl->timeout);
if (total < 0) {
return (UCTL_CMD_DISCON);
}
if (total != expect) {
return (UCTL_CMD_ERR);
}
return (UCTL_CMD_OK);
}
static int istgt_uctl_snprintf(UCTL_Ptr uctl, const char *format, ...)
__attribute__((__format__(__printf__, 2, 3)));
static int
istgt_uctl_snprintf(UCTL_Ptr uctl, const char *format, ...)
{
va_list ap;
int rc;
va_start(ap, format);
rc = vsnprintf(uctl->sendbuf, uctl->sendbufsize, format, ap);
va_end(ap);
return (rc);
}
static int
istgt_uctl_get_media_present(ISTGT_LU_Ptr lu __attribute__((__unused__)),
int lun __attribute__((__unused__)))
{
return (0);
}
static int
istgt_uctl_get_media_lock(ISTGT_LU_Ptr lu __attribute__((__unused__)),
int lun __attribute__((__unused__)))
{
return (0);
}
static int
istgt_uctl_get_authinfo(UCTL_Ptr uctl, const char *authuser)
{
char *authfile = NULL;
int ag_tag;
int rc;
ag_tag = uctl->auth_group;
ISTGT_TRACELOG(ISTGT_TRACE_DEBUG, "ag_tag=%d\n", ag_tag);
MTX_LOCK(&uctl->istgt->mutex);
authfile = xstrdup(uctl->istgt->authfile);
MTX_UNLOCK(&uctl->istgt->mutex);
rc = istgt_chap_get_authinfo(&uctl->auth, authfile, authuser, ag_tag);
if (rc < 0) {
ISTGT_ERRLOG("chap_get_authinfo() failed\n");
xfree(authfile);
return (-1);
}
xfree(authfile);
return (0);
}
static int
istgt_uctl_cmd_auth(UCTL_Ptr uctl)
{
const char *delim = ARGS_DELIM;
char *arg;
char *label;
char *chap_a;
char *chap_i;
char *chap_c;
char *chap_n;
char *chap_r;
int rc;
arg = uctl->arg;
label = strsepq(&arg, delim);
if (label == NULL) {
istgt_uctl_snprintf(uctl, "ERR invalid parameters\n");
rc = istgt_uctl_writeline(uctl);
if (rc != UCTL_CMD_OK) {
return (rc);
}
return (UCTL_CMD_ERR);
}
if (strcasecmp(label, "CHAP_A") == 0) {
if (uctl->auth.chap_phase != ISTGT_CHAP_PHASE_WAIT_A) {
istgt_uctl_snprintf(uctl, "ERR CHAP sequence error\n");
error_return:
uctl->auth.chap_phase = ISTGT_CHAP_PHASE_WAIT_A;
rc = istgt_uctl_writeline(uctl);
if (rc != UCTL_CMD_OK) {
return (rc);
}
return (UCTL_CMD_ERR);
}
chap_a = strsepq(&arg, delim);
if (chap_a == NULL || strcasecmp(chap_a, "5") != 0) {
istgt_uctl_snprintf(uctl, "ERR invalid algorithm\n");
goto error_return;
}
/* Identifier is one octet */
istgt_gen_random(uctl->auth.chap_id, 1);
/* Challenge Value is a variable stream of octets */
/* (binary length MUST not exceed 1024 bytes) */
uctl->auth.chap_challenge_len = ISTGT_CHAP_CHALLENGE_LEN;
istgt_gen_random(uctl->auth.chap_challenge,
uctl->auth.chap_challenge_len);
istgt_bin2hex(uctl->work, uctl->worksize,
uctl->auth.chap_challenge,
uctl->auth.chap_challenge_len);
istgt_uctl_snprintf(uctl, "%s CHAP_IC %d %s\n",
uctl->cmd, (int) uctl->auth.chap_id[0],
uctl->work);
rc = istgt_uctl_writeline(uctl);
if (rc != UCTL_CMD_OK) {
return (rc);
}
uctl->auth.chap_phase = ISTGT_CHAP_PHASE_WAIT_NR;
/* 3-way handshake */
return (UCTL_CMD_OK);
} else if (strcasecmp(label, "CHAP_NR") == 0) {
uint8_t resmd5[ISTGT_MD5DIGEST_LEN];
uint8_t tgtmd5[ISTGT_MD5DIGEST_LEN];
ISTGT_MD5CTX md5ctx;
if (uctl->auth.chap_phase != ISTGT_CHAP_PHASE_WAIT_NR) {
istgt_uctl_snprintf(uctl, "ERR CHAP sequence error\n");
goto error_return;
}
chap_n = strsepq(&arg, delim);
chap_r = strsepq(&arg, delim);
if (chap_n == NULL || chap_r == NULL) {
istgt_uctl_snprintf(uctl, "ERR no response\n");
goto error_return;
}
// ISTGT_TRACELOG(ISTGT_TRACE_DEBUG, "N=%s, R=%s\n",
// chap_n, chap_r);
rc = istgt_hex2bin(resmd5, ISTGT_MD5DIGEST_LEN, chap_r);
if (rc < 0 || rc != ISTGT_MD5DIGEST_LEN) {
istgt_uctl_snprintf(uctl,
"ERR response format error\n");
goto error_return;
}
rc = istgt_uctl_get_authinfo(uctl, chap_n);
if (rc < 0) {
ISTGT_ERRLOG("auth failed (user %.64s)\n", chap_n);
istgt_uctl_snprintf(uctl,
"ERR auth user or secret is missing\n");
goto error_return;
}
if (uctl->auth.user == NULL || uctl->auth.secret == NULL) {
ISTGT_ERRLOG("auth failed (user %.64s)\n", chap_n);
istgt_uctl_snprintf(uctl,
"ERR auth user or secret is missing\n");
goto error_return;
}
istgt_md5init(&md5ctx);
/* Identifier */
istgt_md5update(&md5ctx, uctl->auth.chap_id, 1);
/* followed by secret */
istgt_md5update(&md5ctx, uctl->auth.secret,
strlen(uctl->auth.secret));
/* followed by Challenge Value */
istgt_md5update(&md5ctx, uctl->auth.chap_challenge,
uctl->auth.chap_challenge_len);
/* tgtmd5 is expecting Response Value */
istgt_md5final(tgtmd5, &md5ctx);
/* compare MD5 digest */
if (memcmp(tgtmd5, resmd5, ISTGT_MD5DIGEST_LEN) != 0) {
/* not match */
ISTGT_ERRLOG("auth failed (user %.64s)\n", chap_n);
istgt_uctl_snprintf(uctl,
"ERR auth user or secret is missing\n");
goto error_return;
}
/* OK client's secret */
uctl->authenticated = 1;
/* mutual CHAP? */
chap_i = strsepq(&arg, delim);
chap_c = strsepq(&arg, delim);
if (chap_i != NULL && chap_c != NULL) {
/* Identifier */
uctl->auth.chap_mid[0] =
(uint8_t) strtol(chap_i, NULL, 10);
/* Challenge Value */
rc = istgt_hex2bin(uctl->auth.chap_mchallenge,
ISTGT_CHAP_CHALLENGE_LEN, chap_c);
if (rc < 0) {
istgt_uctl_snprintf(uctl,
"ERR challenge format error\n");
goto error_return;
}
uctl->auth.chap_mchallenge_len = rc;
if (uctl->auth.muser == NULL ||
uctl->auth.msecret == NULL) {
ISTGT_ERRLOG("auth failed (user %.64s)\n",
chap_n);
istgt_uctl_snprintf(uctl,
"ERR auth user or secret is missing\n");
goto error_return;
}
istgt_md5init(&md5ctx);
/* Identifier */
istgt_md5update(&md5ctx, uctl->auth.chap_mid, 1);
/* followed by secret */
istgt_md5update(&md5ctx, uctl->auth.msecret,
strlen(uctl->auth.msecret));
/* followed by Challenge Value */
istgt_md5update(&md5ctx, uctl->auth.chap_mchallenge,
uctl->auth.chap_mchallenge_len);
/* tgtmd5 is Response Value */
istgt_md5final(tgtmd5, &md5ctx);
istgt_bin2hex(uctl->work, uctl->worksize,
tgtmd5, ISTGT_MD5DIGEST_LEN);
/* send NR for mutual CHAP */
istgt_uctl_snprintf(uctl, "%s CHAP_NR \"%s\" %s\n",
uctl->cmd,
uctl->auth.muser,
uctl->work);
rc = istgt_uctl_writeline(uctl);
if (rc != UCTL_CMD_OK) {
return (rc);
}
} else {
/* not mutual */
if (uctl->req_mutual) {
ISTGT_ERRLOG("required mutual CHAP\n");
istgt_uctl_snprintf(uctl,
"ERR CHAP sequence error\n");
goto error_return;
}
}
uctl->auth.chap_phase = ISTGT_CHAP_PHASE_END;
} else {
istgt_uctl_snprintf(uctl, "ERR CHAP sequence error\n");
goto error_return;
}
/* auth succeeded (but mutual may fail) */
istgt_uctl_snprintf(uctl, "OK %s\n", uctl->cmd);
rc = istgt_uctl_writeline(uctl);
if (rc != UCTL_CMD_OK) {
return (rc);
}
return (UCTL_CMD_OK);
}
static int
istgt_uctl_cmd_quit(UCTL_Ptr uctl)
{
int rc;
istgt_uctl_snprintf(uctl, "OK %s\n", uctl->cmd);
rc = istgt_uctl_writeline(uctl);
if (rc != UCTL_CMD_OK) {
return (rc);
}
return (UCTL_CMD_QUIT);
}
static int
istgt_uctl_cmd_noop(UCTL_Ptr uctl)
{
int rc;
istgt_uctl_snprintf(uctl, "OK %s\n", uctl->cmd);
rc = istgt_uctl_writeline(uctl);
if (rc != UCTL_CMD_OK) {
return (rc);
}
return (UCTL_CMD_OK);
}
extern char istgtvers[80];
static int
istgt_uctl_cmd_version(UCTL_Ptr uctl)
{
int rc;
istgt_uctl_snprintf(uctl, "%s %s\n", uctl->cmd, istgtvers);
rc = istgt_uctl_writeline(uctl);
if (rc != UCTL_CMD_OK) {
return (rc);
}
/* version succeeded */
istgt_uctl_snprintf(uctl, "OK %s\n", uctl->cmd);
rc = istgt_uctl_writeline(uctl);
if (rc != UCTL_CMD_OK) {
return (rc);
}
return (UCTL_CMD_OK);
}
static int
istgt_uctl_cmd_sync(UCTL_Ptr uctl)
{
ISTGT_LU_Ptr lu;
ISTGT_LU_LUN_Ptr llp;
const char *delim = ARGS_DELIM;
char *arg;
char *iqn;
char *lun;
int lun_i;
int rc;
arg = uctl->arg;
iqn = strsepq(&arg, delim);
lun = strsepq(&arg, delim);
if (iqn == NULL || arg != NULL) {
istgt_uctl_snprintf(uctl, "ERR invalid parameters\n");
rc = istgt_uctl_writeline(uctl);
if (rc != UCTL_CMD_OK) {
return (rc);
}
return (UCTL_CMD_ERR);
}
if (lun == NULL) {
lun_i = 0;
} else {
lun_i = (int) strtol(lun, NULL, 10);
}
lu = istgt_lu_find_target(uctl->istgt, iqn);
if (lu == NULL) {
istgt_uctl_snprintf(uctl, "ERR no target\n");
goto error_return;
}
if (lun_i < 0 || lun_i >= lu->maxlun) {
istgt_uctl_snprintf(uctl, "ERR no target\n");
goto error_return;
}
llp = &lu->lun[lun_i];
if (llp->type == ISTGT_LU_LUN_TYPE_NONE) {
istgt_uctl_snprintf(uctl, "ERR no LUN\n");
goto error_return;
}
if (lu->type == ISTGT_LU_TYPE_DISK) {
MTX_LOCK(&lu->mutex);
rc = istgt_lu_disk_sync_reservation(lu, lun_i);
MTX_UNLOCK(&lu->mutex);
if (rc < 0)
istgt_uctl_snprintf(uctl,
"ERR in sync cmd execution\n");
} else {
istgt_uctl_snprintf(uctl, "ERR sync_rsv \n");
rc = -1;
}
if (rc < 0) {
error_return:
rc = istgt_uctl_writeline(uctl);
if (rc != UCTL_CMD_OK) {
return (rc);
}
return (UCTL_CMD_ERR);
}
/* logging event */
ISTGT_NOTICELOG("Unit Rsv_Persist %s lun%d\n", iqn, lun_i);
/* Persist succeeded */
istgt_uctl_snprintf(uctl, "OK %s\n", uctl->cmd);
rc = istgt_uctl_writeline(uctl);
if (rc != UCTL_CMD_OK) {
return (rc);
}
return (UCTL_CMD_OK);
}
#ifdef REPLICATION
#define CHECK_ARG_AND_GOTO_ERROR { \
if (arg == NULL) { \
istgt_uctl_snprintf(uctl, "ERR invalid param\n"); \
goto error_return; \
} \
}
static int
istgt_uctl_cmd_snap(UCTL_Ptr uctl)
{
ISTGT_LU_Ptr lu = NULL;
ISTGT_LU_DISK *spec = NULL;
const char *delim = ARGS_DELIM;
char *volname, *snapname;
int rc = 0, ret = UCTL_CMD_ERR, io_wait_time, wait_time;
char *arg;
int r;
arg = uctl->arg;
CHECK_ARG_AND_GOTO_ERROR;
volname = strsepq(&arg, delim);
CHECK_ARG_AND_GOTO_ERROR;
snapname = strsepq(&arg, delim);
CHECK_ARG_AND_GOTO_ERROR;
io_wait_time = atoi(strsepq(&arg, delim));
CHECK_ARG_AND_GOTO_ERROR;
wait_time = atoi(strsepq(&arg, delim));
lu = istgt_lu_find_target_by_volname(uctl->istgt, volname);
if (lu == NULL) {
istgt_uctl_snprintf(uctl, "ERR no target\n");
goto error_return;
}
spec = lu->lun[0].spec;
if (strcmp(uctl->cmd, "SNAPCREATE") == 0)
r = istgt_lu_create_snapshot(spec, snapname, io_wait_time,
wait_time);
else
r = istgt_lu_destroy_snapshot(spec, snapname);
if (r) {
istgt_uctl_snprintf(uctl, "OK %s\n", uctl->cmd);
ret = UCTL_CMD_OK;
}
else
istgt_uctl_snprintf(uctl, "ERR failed %s\n", uctl->cmd);
error_return:
rc = istgt_uctl_writeline(uctl);
if (rc != UCTL_CMD_OK) {
return (rc);
}
return (ret);
}
static int
istgt_uctl_cmd_resize(UCTL_Ptr uctl)
{
ISTGT_LU_Ptr lu = NULL;
ISTGT_LU_DISK *spec = NULL;
int rc = 0, ret = UCTL_CMD_ERR;
char *volname, *size_str, *arg;
uint64_t new_size, old_size;
bool r;
const char *delim = ARGS_DELIM;
arg = uctl->arg;
//NOTE: We are hard coding replica block size as of
//now we don't have any information related to block size of replica
uint64_t replica_block_size = 4096;
CHECK_ARG_AND_GOTO_ERROR;
volname = strsepq(&arg, delim);
CHECK_ARG_AND_GOTO_ERROR;
size_str = strsepq(&arg, delim);
if (size_str == NULL) {
istgt_uctl_snprintf(uctl, "ERR LUN format error\n");
goto error_return;
} else if (*size_str == '-') {
istgt_uctl_snprintf(uctl, "ERR invalid size\n");
goto error_return;
}
ISTGT_LOG("volume(%s) requested to resize %s\n", volname, size_str);
lu = istgt_lu_find_target_by_volname(uctl->istgt, volname);
if (lu == NULL) {
istgt_uctl_snprintf(uctl, "ERR target not found\n");
goto error_return;
}
spec = lu->lun[0].spec;
//old_size = lu->lun[0].u.storage.size;
old_size = spec->size;
new_size = istgt_lu_parse_size(size_str);
if (old_size > new_size) {
ISTGT_ERRLOG("volume(%s) size is already greater than requested resize\n", volname);
istgt_uctl_snprintf(uctl, "ERR current size is already greater than requested size\n");
goto error_return;
}
if ((new_size % replica_block_size) != 0) {
ISTGT_ERRLOG("failed to resize volume %s new size %s "
"is not in multiples of block length %lu\n",
volname, size_str, spec->blocklen);
istgt_uctl_snprintf(uctl, "ERR new size %s is "
"not in multiples of block length %lu\n", size_str, spec->blocklen);
goto error_return;
}
if (old_size == new_size) {
ISTGT_LOG("volume(%s) size is already equal to requested resize\n", volname);
istgt_uctl_snprintf(uctl, "OK %s\n", uctl->cmd);
} else {
r = istgt_lu_resize_volume(spec, new_size);
if (r == true) {
istgt_uctl_snprintf(uctl, "OK %s\n", uctl->cmd);
ret = UCTL_CMD_OK;
lu->lun[0].u.storage.size = new_size;
}
else
istgt_uctl_snprintf(uctl, "ERR failed %s\n", uctl->cmd);
}
error_return:
rc = istgt_uctl_writeline(uctl);
if (rc != UCTL_CMD_OK) {
return (rc);
}
return (ret);
}
static int
istgt_uctl_cmd_desired_rf(UCTL_Ptr uctl)
{
ISTGT_LU_Ptr lu = NULL;
ISTGT_LU_DISK *spec = NULL;
int rc = 0, ret = UCTL_CMD_ERR;
char *volname, *arg, *s_drf;
int drf, i;
const char *delim = ARGS_DELIM;
arg = uctl->arg;
char **known_replica_id_list = NULL;
CHECK_ARG_AND_GOTO_ERROR;
volname = strsepq(&arg, delim);
CHECK_ARG_AND_GOTO_ERROR;
s_drf = strsepq(&arg, delim);
drf = strtol(s_drf, NULL, 10);
if (errno) {
istgt_uctl_snprintf(uctl, "ERR error code:%d\n", errno);
(void) istgt_uctl_writeline(uctl);
return (UCTL_CMD_ERR);
}
if (drf > MAXREPLICA) {
ISTGT_ERRLOG("desired replication factor(%d) can not "
"be greater than MAXREPLICAS(%d)\n", drf, MAXREPLICA);
istgt_uctl_snprintf(uctl, "ERR desired replication factor(%d)"
" can not be greater than MAXREPLICA(%d)\n", drf, (int)MAXREPLICA);
goto error_return;
}
lu = istgt_lu_find_target_by_volname(uctl->istgt, volname);
if (lu == NULL) {
istgt_uctl_snprintf(uctl, "ERR target not found\n");
goto error_return;
}
spec = lu->lun[0].spec;
if (drf < spec->desired_replication_factor) {
// TODO: I think this check is not required(get confirmation during review process)
// If user want to remove scalingup replica should we need to allow this process?
if ( spec->desired_replication_factor != spec->replication_factor ||
drf != spec->replication_factor - 1) {
ISTGT_ERRLOG("current desired replication factor(%d) "
"and replication factor(%d) but requested desired "
"replication factor(%d) are invalid changes\n",
spec->desired_replication_factor,
spec->replication_factor, drf);
istgt_uctl_snprintf(uctl, "ERR current desired "
"replication factor(%d) and replication factor(%d) "
"but requested desired replication factor(%d) are "
"invalid changes\n", spec->desired_replication_factor,
spec->replication_factor, drf);
goto error_return;
}
// In case of scale down read known replica list
known_replica_id_list = (char **) xmalloc(sizeof(char *) * drf);
memset(known_replica_id_list, 0, sizeof(char *) * drf);
for (i=0; i < drf; i++) {
CHECK_ARG_AND_GOTO_ERROR;
known_replica_id_list[i] = strsepq(&arg, delim);
}
rc = istgt_lu_remove_unknown_replica(spec, drf, known_replica_id_list);
if (rc == 0) {
istgt_uctl_snprintf(uctl, "OK %s\n", uctl->cmd);
ret = UCTL_CMD_OK;
}
else
istgt_uctl_snprintf(uctl, "ERR failed %s\n", uctl->cmd);
} else if (drf == spec->desired_replication_factor) {
ISTGT_LOG("desired replication factor is already equal to "
"requested desired replication factor\n");
istgt_uctl_snprintf(uctl, "OK %s\n", uctl->cmd);
} else {
MTX_LOCK(&spec->rq_mtx);
spec->desired_replication_factor = drf;
spec->lu->desired_replication_factor = drf;
MTX_UNLOCK(&spec->rq_mtx);
ISTGT_LOG("successfully updated the desired replication factor to %d\n", drf);
istgt_uctl_snprintf(uctl, "OK %s\n", uctl->cmd);
ret = UCTL_CMD_OK;
}
error_return:
if (known_replica_id_list != NULL) {
free(known_replica_id_list);
}
rc = istgt_uctl_writeline(uctl);
if (rc != UCTL_CMD_OK) {
return (rc);
}
return (ret);
}
static int
istgt_uctl_cmd_mempoolstats(UCTL_Ptr uctl)
{
int rc = 0;
char *response = NULL;
istgt_lu_mempool_stats(&response);
istgt_uctl_snprintf(uctl, "%s %s\n", uctl->cmd, response);
rc = istgt_uctl_writeline(uctl);
if (rc != UCTL_CMD_OK) {
if (response)
free(response);
return (rc);
}
if (response)
free(response);
istgt_uctl_snprintf(uctl, "OK %s\n", uctl->cmd);
rc = istgt_uctl_writeline(uctl);
if (rc != UCTL_CMD_OK) {
return (rc);
}
return (UCTL_CMD_OK);
}
static int
istgt_uctl_cmd_replica_stats(UCTL_Ptr uctl)
{
const char *delim = ARGS_DELIM;
int rc = 0;
char *arg;
char *response = NULL;
char *volname = NULL;
arg = uctl->arg;
if (arg)
volname = strsepq(&arg, delim);
istgt_lu_replica_stats(volname, &response);
istgt_uctl_snprintf(uctl, "%s %s\n", uctl->cmd, response);
rc = istgt_uctl_writeline(uctl);
if (rc != UCTL_CMD_OK) {
if (response)
free(response);
return (rc);
}
if (response)
free(response);
istgt_uctl_snprintf(uctl, "OK %s\n", uctl->cmd);
rc = istgt_uctl_writeline(uctl);
if (rc != UCTL_CMD_OK) {
return (rc);
}
return (UCTL_CMD_OK);
}
static int
istgt_uctl_cmd_max_io_wait(UCTL_Ptr uctl)
{
const char *delim = ARGS_DELIM;
int rc = 0;
char *arg;
uint64_t max_wait_time, new_wait_time;
char *s_io_wait_time = NULL;
arg = uctl->arg;
if (arg) {
s_io_wait_time = strsepq(&arg, delim);
new_wait_time = strtoull(s_io_wait_time, NULL, 10);
if (errno) {
istgt_uctl_snprintf(uctl, "ERR error code:%d\n", errno);
(void) istgt_uctl_writeline(uctl);
return (UCTL_CMD_ERR);
}
istgt_set_max_io_wait_time(new_wait_time);
}
max_wait_time = istgt_get_max_io_wait_time();
istgt_uctl_snprintf(uctl, "%s %lu\n", uctl->cmd, max_wait_time);
rc = istgt_uctl_writeline(uctl);
if (rc != UCTL_CMD_OK) {
return (rc);
}
istgt_uctl_snprintf(uctl, "OK %s\n", uctl->cmd);
rc = istgt_uctl_writeline(uctl);
if (rc != UCTL_CMD_OK) {
return (rc);
}
return (UCTL_CMD_OK);
}
#endif
static int
istgt_uctl_cmd_set(UCTL_Ptr uctl)
{
ISTGT_Ptr istgt = uctl->istgt;
ISTGT_LU_Ptr lu = NULL;
ISTGT_LU_DISK *spec = NULL, *spec1 = NULL;
const char *delim = ARGS_DELIM;
char *arg;
char *iqn;
char *lun;
int i = 0;
int rc = 0;
uint8_t val1, val2;
int setopt = 0;
int setval = 0, j, tot = 0;
arg = uctl->arg;
iqn = strsepq(&arg, delim);
lun = strsepq(&arg, delim);
setopt = atoi(strsepq(&arg, delim));
setval = atoi(strsepq(&arg, delim));
ISTGT_LOG("%s %s %d %d %s\n", iqn, lun, setopt, setval, arg);
if (iqn == NULL || (arg != NULL && setopt != 15)) {
istgt_uctl_snprintf(uctl, "ERR invalid parameters\n");
goto error_return;
}
if (setopt == 0) {
istgt_uctl_snprintf(uctl, "ERR no setopt\n");
goto error_return;
}
if (setval < 0) {
istgt_uctl_snprintf(uctl,
"ERR invalid parameter value %d for opt %d\n",
setval, setopt);
goto error_return;
}
if (strcmp(iqn, "ALL")) {
lu = istgt_lu_find_target(uctl->istgt, iqn);
if (lu == NULL) {
istgt_uctl_snprintf(uctl, "ERR no target\n");
goto error_return;
}
spec = lu->lun[0].spec;
}
switch (setopt) {
case 1:
if (setval > 1 || setval < 0) {
istgt_uctl_snprintf(uctl,
"ERR invalid parameter value %d\n", setval);
goto error_return;
}
ISTGT_LOG("send_abrt_resp %d->%d\n", send_abrt_resp, setval);
send_abrt_resp = setval;
break;
case 2:
if (setval > 1 || setval < 0) {
istgt_uctl_snprintf(uctl,
"ERR invalid parameter value %d\n", setval);
goto error_return;
}
ISTGT_LOG("abort_result_queue %d->%d\n",
abort_result_queue, setval);
abort_result_queue = setval;
break;
case 3:
if (setval > 1 || setval < 0) {
istgt_uctl_snprintf(uctl,
"ERR invalid parameter value %d\n", setval);
goto error_return;
}
ISTGT_LOG("wait_inflights %d->%d\n", wait_inflights, setval);
wait_inflights = setval;
break;
case 4:
if (setval < 1) {
istgt_uctl_snprintf(uctl,
"ERR invalid parameter value %d\n", setval);
goto error_return;
}
if (strcmp(iqn, "ALL") == 0) {
for (i = 1; i <= istgt->nlogical_unit; i++) {
spec = (ISTGT_LU_DISK *)
istgt->logical_unit[i]->lun[0].spec;
if (!spec)
goto spec_error;
spec->max_unmap_sectors = setval;
}
ISTGT_LOG("ALL->max_unmap_sectors ->%d\n", setval);
break;
}
if (!spec)
goto spec_error;
ISTGT_LOG("%s->max_unmap_sectors %d->%d\n",
iqn, spec->max_unmap_sectors, setval);
spec->max_unmap_sectors = setval;
break;
case 5:
if (setval > 1 || setval < 0) {
istgt_uctl_snprintf(uctl,
"ERR invalid parameter value %d\n", setval);
goto error_return;
}
ISTGT_LOG("clear_resv %d->%d\n", clear_resv, setval);
clear_resv = setval;
break;
case 6:
if (setval > 1 || setval < 0) {
istgt_uctl_snprintf(uctl,
"ERR invalid parameter value %d\n", setval);
goto error_return;
}
if (strcmp(iqn, "ALL") == 0) {
for (i = 1; i <= istgt->nlogical_unit; i++) {
spec = (ISTGT_LU_DISK *)
istgt->logical_unit[i]->lun[0].spec;
if (!spec)
goto spec_error;
spec->ats = setval;