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20eb969793
freebsd-skq/sbin/camcontrol/persist.c
Edward Tomasz Napierala 22267215d6 camcontrol(8): remove unnecessary CCB zeroing 
After 3e404b8c53, cam_getccb(3) clears the returned CCB, making
a number of calls to CCB_CLEAR_ALL_EXCEPT_HDR(3) unnecessary.

Reviewed By:	imp
Sponsored by:	NetApp, Inc.
Sponsored by:	Klara, Inc.
Differential Revision:	https://reviews.freebsd.org/D27812
2021-02-25 18:45:21 +00:00

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/*-
* Copyright (c) 2013 Spectra Logic Corporation
* 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,
* without modification.
* 2. Redistributions in binary form must reproduce at minimum a disclaimer
* substantially similar to the "NO WARRANTY" disclaimer below
* ("Disclaimer") and any redistribution must be conditioned upon
* including a substantially similar Disclaimer requirement for further
* binary redistribution.
*
* NO WARRANTY
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* HOLDERS OR CONTRIBUTORS BE LIABLE FOR 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 DAMAGES.
*
* Authors: Ken Merry (Spectra Logic Corporation)
*/
/*
* SCSI Persistent Reservation support for camcontrol(8).
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/ioctl.h>
#include <sys/stdint.h>
#include <sys/types.h>
#include <sys/endian.h>
#include <sys/sbuf.h>
#include <sys/queue.h>
#include <stdio.h>
#include <stdlib.h>
#include <inttypes.h>
#include <unistd.h>
#include <string.h>
#include <strings.h>
#include <fcntl.h>
#include <ctype.h>
#include <limits.h>
#include <err.h>
#include <cam/cam.h>
#include <cam/cam_debug.h>
#include <cam/cam_ccb.h>
#include <cam/scsi/scsi_all.h>
#include <cam/scsi/scsi_pass.h>
#include <cam/scsi/scsi_message.h>
#include <camlib.h>
#include "camcontrol.h"
struct persist_transport_id {
struct scsi_transportid_header *hdr;
unsigned int alloc_len;
STAILQ_ENTRY(persist_transport_id) links;
};
/*
* Service Actions for PERSISTENT RESERVE IN.
*/
static struct scsi_nv persist_in_actions[] = {
{ "read_keys", SPRI_RK },
{ "read_reservation", SPRI_RR },
{ "report_capabilities", SPRI_RC },
{ "read_full_status", SPRI_RS }
};
/*
* Service Actions for PERSISTENT RESERVE OUT.
*/
static struct scsi_nv persist_out_actions[] = {
{ "register", SPRO_REGISTER },
{ "reserve", SPRO_RESERVE },
{ "release" , SPRO_RELEASE },
{ "clear", SPRO_CLEAR },
{ "preempt", SPRO_PREEMPT },
{ "preempt_abort", SPRO_PRE_ABO },
{ "register_ignore", SPRO_REG_IGNO },
{ "register_move", SPRO_REG_MOVE },
{ "replace_lost", SPRO_REPL_LOST_RES }
};
/*
* Known reservation scopes. As of SPC-4, only LU_SCOPE is used in the
* spec. The others are obsolete.
*/
static struct scsi_nv persist_scope_table[] = {
{ "lun", SPR_LU_SCOPE },
{ "extent", SPR_EXTENT_SCOPE },
{ "element", SPR_ELEMENT_SCOPE }
};
/*
* Reservation types. The longer name for a given reservation type is
* listed first, so that it makes more sense when we print out the
* reservation type. We step through the table linearly when looking for
* the text name for a particular numeric reservation type value.
*/
static struct scsi_nv persist_type_table[] = {
{ "read_shared", SPR_TYPE_RD_SHARED },
{ "write_exclusive", SPR_TYPE_WR_EX },
{ "wr_ex", SPR_TYPE_WR_EX },
{ "read_exclusive", SPR_TYPE_RD_EX },
{ "rd_ex", SPR_TYPE_RD_EX },
{ "exclusive_access", SPR_TYPE_EX_AC },
{ "ex_ac", SPR_TYPE_EX_AC },
{ "write_exclusive_reg_only", SPR_TYPE_WR_EX_RO },
{ "wr_ex_ro", SPR_TYPE_WR_EX_RO },
{ "exclusive_access_reg_only", SPR_TYPE_EX_AC_RO },
{ "ex_ac_ro", SPR_TYPE_EX_AC_RO },
{ "write_exclusive_all_regs", SPR_TYPE_WR_EX_AR },
{ "wr_ex_ar", SPR_TYPE_WR_EX_AR },
{ "exclusive_access_all_regs", SPR_TYPE_EX_AC_AR },
{ "ex_ac_ar", SPR_TYPE_EX_AC_AR }
};
/*
* Print out the standard scope/type field.
*/
static void
persist_print_scopetype(uint8_t scopetype)
{
const char *tmpstr;
int num_entries;
num_entries = sizeof(persist_scope_table) /
sizeof(persist_scope_table[0]);
tmpstr = scsi_nv_to_str(persist_scope_table, num_entries,
scopetype & SPR_SCOPE_MASK);
fprintf(stdout, "Scope: %s (%#x)\n", (tmpstr != NULL) ? tmpstr :
"Unknown", (scopetype & SPR_SCOPE_MASK) >> SPR_SCOPE_SHIFT);
num_entries = sizeof(persist_type_table) /
sizeof(persist_type_table[0]);
tmpstr = scsi_nv_to_str(persist_type_table, num_entries,
scopetype & SPR_TYPE_MASK);
fprintf(stdout, "Type: %s (%#x)\n", (tmpstr != NULL) ? tmpstr :
"Unknown", scopetype & SPR_TYPE_MASK);
}
static void
persist_print_transportid(uint8_t *buf, uint32_t len)
{
struct sbuf *sb;
sb = sbuf_new_auto();
if (sb == NULL)
fprintf(stderr, "Unable to allocate sbuf\n");
scsi_transportid_sbuf(sb, (struct scsi_transportid_header *)buf, len);
sbuf_finish(sb);
fprintf(stdout, "%s\n", sbuf_data(sb));
sbuf_delete(sb);
}
/*
* Print out a persistent reservation. This is used with the READ
* RESERVATION (0x01) service action of the PERSISTENT RESERVE IN command.
*/
static void
persist_print_res(struct scsi_per_res_in_header *hdr, uint32_t valid_len)
{
uint32_t length;
struct scsi_per_res_in_rsrv *res;
length = scsi_4btoul(hdr->length);
length = MIN(length, valid_len);
res = (struct scsi_per_res_in_rsrv *)hdr;
if (length < sizeof(res->data) - sizeof(res->data.extent_length)) {
if (length == 0)
fprintf(stdout, "No reservations.\n");
else
warnx("unable to print reservation, only got %u "
"valid bytes", length);
return;
}
fprintf(stdout, "PRgeneration: %#x\n",
scsi_4btoul(res->header.generation));
fprintf(stdout, "Reservation Key: %#jx\n",
(uintmax_t)scsi_8btou64(res->data.reservation));
fprintf(stdout, "Scope address: %#x\n",
scsi_4btoul(res->data.scope_addr));
persist_print_scopetype(res->data.scopetype);
fprintf(stdout, "Extent length: %u\n",
scsi_2btoul(res->data.extent_length));
}
/*
* Print out persistent reservation keys. This is used with the READ KEYS
* service action of the PERSISTENT RESERVE IN command.
*/
static void
persist_print_keys(struct scsi_per_res_in_header *hdr, uint32_t valid_len)
{
uint32_t length, num_keys, i;
struct scsi_per_res_key *key;
length = scsi_4btoul(hdr->length);
length = MIN(length, valid_len);
num_keys = length / sizeof(*key);
fprintf(stdout, "PRgeneration: %#x\n", scsi_4btoul(hdr->generation));
fprintf(stdout, "%u key%s%s\n", num_keys, (num_keys == 1) ? "" : "s",
(num_keys == 0) ? "." : ":");
for (i = 0, key = (struct scsi_per_res_key *)&hdr[1]; i < num_keys;
i++, key++) {
fprintf(stdout, "%u: %#jx\n", i,
(uintmax_t)scsi_8btou64(key->key));
}
}
/*
* Print out persistent reservation capabilities. This is used with the
* REPORT CAPABILITIES service action of the PERSISTENT RESERVE IN command.
*/
static void
persist_print_cap(struct scsi_per_res_cap *cap, uint32_t valid_len)
{
uint32_t length;
int check_type_mask = 0;
uint32_t type_mask;
length = scsi_2btoul(cap->length);
length = MIN(length, valid_len);
type_mask = scsi_2btoul(cap->type_mask);
if (length < __offsetof(struct scsi_per_res_cap, type_mask)) {
fprintf(stdout, "Insufficient data (%u bytes) to report "
"full capabilities\n", length);
return;
}
if (length >= __offsetof(struct scsi_per_res_cap, reserved))
check_type_mask = 1;
fprintf(stdout, "Replace Lost Reservation Capable (RLR_C): %d\n",
(cap->flags1 & SPRI_RLR_C) ? 1 : 0);
fprintf(stdout, "Compatible Reservation Handling (CRH): %d\n",
(cap->flags1 & SPRI_CRH) ? 1 : 0);
fprintf(stdout, "Specify Initiator Ports Capable (SIP_C): %d\n",
(cap->flags1 & SPRI_SIP_C) ? 1 : 0);
fprintf(stdout, "All Target Ports Capable (ATP_C): %d\n",
(cap->flags1 & SPRI_ATP_C) ? 1 : 0);
fprintf(stdout, "Persist Through Power Loss Capable (PTPL_C): %d\n",
(cap->flags1 & SPRI_PTPL_C) ? 1 : 0);
fprintf(stdout, "ALLOW COMMANDS field: (%#x)\n",
(cap->flags2 & SPRI_ALLOW_CMD_MASK) >> SPRI_ALLOW_CMD_SHIFT);
/*
* These cases are cut-and-pasted from SPC4r36l. There is no
* succinct way to describe these otherwise, and even with the
* verbose description, the user will probably have to refer to
* the spec to fully understand what is going on.
*/
switch (cap->flags2 & SPRI_ALLOW_CMD_MASK) {
case SPRI_ALLOW_1:
fprintf(stdout,
" The device server allows the TEST UNIT READY command through Write\n"
" Exclusive type reservations and Exclusive Access type reservations\n"
" and does not provide information about whether the following commands\n"
" are allowed through Write Exclusive type reservations:\n"
" a) the MODE SENSE command, READ ATTRIBUTE command, READ BUFFER\n"
" command, RECEIVE COPY RESULTS command, RECEIVE DIAGNOSTIC\n"
" RESULTS command, REPORT SUPPORTED OPERATION CODES command,\n"
" and REPORT SUPPORTED TASK MANAGEMENT FUNCTION command; and\n"
" b) the READ DEFECT DATA command (see SBC-3).\n");
break;
case SPRI_ALLOW_2:
fprintf(stdout,
" The device server allows the TEST UNIT READY command through Write\n"
" Exclusive type reservations and Exclusive Access type reservations\n"
" and does not allow the following commands through Write Exclusive type\n"
" reservations:\n"
" a) the MODE SENSE command, READ ATTRIBUTE command, READ BUFFER\n"
" command, RECEIVE DIAGNOSTIC RESULTS command, REPORT SUPPORTED\n"
" OPERATION CODES command, and REPORT SUPPORTED TASK MANAGEMENT\n"
" FUNCTION command; and\n"
" b) the READ DEFECT DATA command.\n"
" The device server does not allow the RECEIVE COPY RESULTS command\n"
" through Write Exclusive type reservations or Exclusive Access type\n"
" reservations.\n");
break;
case SPRI_ALLOW_3:
fprintf(stdout,
" The device server allows the TEST UNIT READY command through Write\n"
" Exclusive type reservations and Exclusive Access type reservations\n"
" and allows the following commands through Write Exclusive type\n"
" reservations:\n"
" a) the MODE SENSE command, READ ATTRIBUTE command, READ BUFFER\n"
" command, RECEIVE DIAGNOSTIC RESULTS command, REPORT SUPPORTED\n"
" OPERATION CODES command, and REPORT SUPPORTED TASK MANAGEMENT\n"
" FUNCTION command; and\n"
" b) the READ DEFECT DATA command.\n"
" The device server does not allow the RECEIVE COPY RESULTS command\n"
" through Write Exclusive type reservations or Exclusive Access type\n"
" reservations.\n");
break;
case SPRI_ALLOW_4:
fprintf(stdout,
" The device server allows the TEST UNIT READY command and the RECEIVE\n"
" COPY RESULTS command through Write Exclusive type reservations and\n"
" Exclusive Access type reservations and allows the following commands\n"
" through Write Exclusive type reservations:\n"
" a) the MODE SENSE command, READ ATTRIBUTE command, READ BUFFER\n"
" command, RECEIVE DIAGNOSTIC RESULTS command, REPORT SUPPORTED\n"
" OPERATION CODES command, and REPORT SUPPORTED TASK MANAGEMENT\n"
" FUNCTION command; and\n"
" b) the READ DEFECT DATA command.\n");
break;
case SPRI_ALLOW_NA:
fprintf(stdout,
" No information is provided about whether certain commands are allowed\n"
" through certain types of persistent reservations.\n");
break;
default:
fprintf(stdout,
" Unknown ALLOW COMMANDS value %#x\n",
(cap->flags2 & SPRI_ALLOW_CMD_MASK) >>
SPRI_ALLOW_CMD_SHIFT);
break;
}
fprintf(stdout, "Persist Through Power Loss Activated (PTPL_A): %d\n",
(cap->flags2 & SPRI_PTPL_A) ? 1 : 0);
if ((check_type_mask != 0)
&& (cap->flags2 & SPRI_TMV)) {
fprintf(stdout, "Supported Persistent Reservation Types:\n");
fprintf(stdout, " Write Exclusive - All Registrants "
"(WR_EX_AR): %d\n",
(type_mask & SPRI_TM_WR_EX_AR)? 1 : 0);
fprintf(stdout, " Exclusive Access - Registrants Only "
"(EX_AC_RO): %d\n",
(type_mask & SPRI_TM_EX_AC_RO) ? 1 : 0);
fprintf(stdout, " Write Exclusive - Registrants Only "
"(WR_EX_RO): %d\n",
(type_mask & SPRI_TM_WR_EX_RO)? 1 : 0);
fprintf(stdout, " Exclusive Access (EX_AC): %d\n",
(type_mask & SPRI_TM_EX_AC) ? 1 : 0);
fprintf(stdout, " Write Exclusive (WR_EX): %d\n",
(type_mask & SPRI_TM_WR_EX) ? 1 : 0);
fprintf(stdout, " Exclusive Access - All Registrants "
"(EX_AC_AR): %d\n",
(type_mask & SPRI_TM_EX_AC_AR) ? 1 : 0);
} else {
fprintf(stdout, "Persistent Reservation Type Mask is NOT "
"valid\n");
}
}
static void
persist_print_full(struct scsi_per_res_in_header *hdr, uint32_t valid_len)
{
uint32_t length, len_to_go = 0;
struct scsi_per_res_in_full_desc *desc;
uint8_t *cur_pos;
int i;
length = scsi_4btoul(hdr->length);
length = MIN(length, valid_len);
if (length < sizeof(*desc)) {
if (length == 0)
fprintf(stdout, "No reservations.\n");
else
warnx("unable to print reservation, only got %u "
"valid bytes", length);
return;
}
fprintf(stdout, "PRgeneration: %#x\n", scsi_4btoul(hdr->generation));
cur_pos = (uint8_t *)&hdr[1];
for (len_to_go = length, i = 0,
desc = (struct scsi_per_res_in_full_desc *)cur_pos;
len_to_go >= sizeof(*desc);
desc = (struct scsi_per_res_in_full_desc *)cur_pos, i++) {
uint32_t additional_length, cur_length;
fprintf(stdout, "Reservation Key: %#jx\n",
(uintmax_t)scsi_8btou64(desc->res_key.key));
fprintf(stdout, "All Target Ports (ALL_TG_PT): %d\n",
(desc->flags & SPRI_FULL_ALL_TG_PT) ? 1 : 0);
fprintf(stdout, "Reservation Holder (R_HOLDER): %d\n",
(desc->flags & SPRI_FULL_R_HOLDER) ? 1 : 0);
if (desc->flags & SPRI_FULL_R_HOLDER)
persist_print_scopetype(desc->scopetype);
if ((desc->flags & SPRI_FULL_ALL_TG_PT) == 0)
fprintf(stdout, "Relative Target Port ID: %#x\n",
scsi_2btoul(desc->rel_trgt_port_id));
additional_length = scsi_4btoul(desc->additional_length);
persist_print_transportid(desc->transport_id,
additional_length);
cur_length = sizeof(*desc) + additional_length;
len_to_go -= cur_length;
cur_pos += cur_length;
}
}
int
scsipersist(struct cam_device *device, int argc, char **argv, char *combinedopt,
int task_attr, int retry_count, int timeout, int verbosemode,
int err_recover)
{
union ccb *ccb = NULL;
int c, in = 0, out = 0;
int action = -1, num_ids = 0;
int error = 0;
uint32_t res_len = 0;
unsigned long rel_tgt_port = 0;
uint8_t *res_buf = NULL;
int scope = SPR_LU_SCOPE, res_type = 0;
struct persist_transport_id *id, *id2;
STAILQ_HEAD(, persist_transport_id) transport_id_list;
uint64_t key = 0, sa_key = 0;
struct scsi_nv *table = NULL;
size_t table_size = 0, id_len = 0;
uint32_t valid_len = 0;
int all_tg_pt = 0, aptpl = 0, spec_i_pt = 0, unreg = 0,rel_port_set = 0;
STAILQ_INIT(&transport_id_list);
ccb = cam_getccb(device);
if (ccb == NULL) {
warnx("%s: error allocating CCB", __func__);
error = 1;
goto bailout;
}
while ((c = getopt(argc, argv, combinedopt)) != -1) {
switch (c) {
case 'a':
all_tg_pt = 1;
break;
case 'I': {
int error_str_len = 128;
char error_str[error_str_len];
char *id_str;
id = malloc(sizeof(*id));
if (id == NULL) {
warnx("%s: error allocating %zu bytes",
__func__, sizeof(*id));
error = 1;
goto bailout;
}
bzero(id, sizeof(*id));
id_str = strdup(optarg);
if (id_str == NULL) {
warnx("%s: error duplicating string %s",
__func__, optarg);
free(id);
error = 1;
goto bailout;
}
error = scsi_parse_transportid(id_str, &id->hdr,
&id->alloc_len, error_str, error_str_len);
if (error != 0) {
warnx("%s", error_str);
error = 1;
free(id);
free(id_str);
goto bailout;
}
free(id_str);
STAILQ_INSERT_TAIL(&transport_id_list, id, links);
num_ids++;
id_len += id->alloc_len;
break;
}
case 'k':
case 'K': {
char *endptr;
uint64_t tmpval;
tmpval = strtoumax(optarg, &endptr, 0);
if (*endptr != '\0') {
warnx("%s: invalid key argument %s", __func__,
optarg);
error = 1;
goto bailout;
}
if (c == 'k') {
key = tmpval;
} else {
sa_key = tmpval;
}
break;
}
case 'i':
case 'o': {
scsi_nv_status status;
int table_entry = 0;
if (c == 'i') {
in = 1;
table = persist_in_actions;
table_size = sizeof(persist_in_actions) /
sizeof(persist_in_actions[0]);
} else {
out = 1;
table = persist_out_actions;
table_size = sizeof(persist_out_actions) /
sizeof(persist_out_actions[0]);
}
if ((in + out) > 1) {
warnx("%s: only one in (-i) or out (-o) "
"action is allowed", __func__);
error = 1;
goto bailout;
}
status = scsi_get_nv(table, table_size, optarg,
&table_entry,SCSI_NV_FLAG_IG_CASE);
if (status == SCSI_NV_FOUND)
action = table[table_entry].value;
else {
warnx("%s: %s %s option %s", __func__,
(status == SCSI_NV_AMBIGUOUS) ?
"ambiguous" : "invalid", in ? "in" :
"out", optarg);
error = 1;
goto bailout;
}
break;
}
case 'p':
aptpl = 1;
break;
case 'R': {
char *endptr;
rel_tgt_port = strtoul(optarg, &endptr, 0);
if (*endptr != '\0') {
warnx("%s: invalid relative target port %s",
__func__, optarg);
error = 1;
goto bailout;
}
rel_port_set = 1;
break;
}
case 's': {
size_t scope_size;
struct scsi_nv *scope_table = NULL;
scsi_nv_status status;
int table_entry = 0;
char *endptr;
/*
* First check to see if the user gave us a numeric
* argument. If so, we'll try using it.
*/
if (isdigit(optarg[0])) {
scope = strtol(optarg, &endptr, 0);
if (*endptr != '\0') {
warnx("%s: invalid scope %s",
__func__, optarg);
error = 1;
goto bailout;
}
scope = (scope << SPR_SCOPE_SHIFT) &
SPR_SCOPE_MASK;
break;
}
scope_size = sizeof(persist_scope_table) /
sizeof(persist_scope_table[0]);
scope_table = persist_scope_table;
status = scsi_get_nv(scope_table, scope_size, optarg,
&table_entry,SCSI_NV_FLAG_IG_CASE);
if (status == SCSI_NV_FOUND)
scope = scope_table[table_entry].value;
else {
warnx("%s: %s scope %s", __func__,
(status == SCSI_NV_AMBIGUOUS) ?
"ambiguous" : "invalid", optarg);
error = 1;
goto bailout;
}
break;
}
case 'S':
spec_i_pt = 1;
break;
case 'T': {
size_t res_type_size;
struct scsi_nv *rtype_table = NULL;
scsi_nv_status status;
char *endptr;
int table_entry = 0;
/*
* First check to see if the user gave us a numeric
* argument. If so, we'll try using it.
*/
if (isdigit(optarg[0])) {
res_type = strtol(optarg, &endptr, 0);
if (*endptr != '\0') {
warnx("%s: invalid reservation type %s",
__func__, optarg);
error = 1;
goto bailout;
}
break;
}
res_type_size = sizeof(persist_type_table) /
sizeof(persist_type_table[0]);
rtype_table = persist_type_table;
status = scsi_get_nv(rtype_table, res_type_size,
optarg, &table_entry,
SCSI_NV_FLAG_IG_CASE);
if (status == SCSI_NV_FOUND)
res_type = rtype_table[table_entry].value;
else {
warnx("%s: %s reservation type %s", __func__,
(status == SCSI_NV_AMBIGUOUS) ?
"ambiguous" : "invalid", optarg);
error = 1;
goto bailout;
}
break;
}
case 'U':
unreg = 1;
break;
default:
break;
}
}
if ((in + out) != 1) {
warnx("%s: you must specify one of -i or -o", __func__);
error = 1;
goto bailout;
}
/*
* Note that we don't really try to figure out whether the user
* needs to specify one or both keys. There are a number of
* scenarios, and sometimes 0 is a valid and desired value.
*/
if (in != 0) {
switch (action) {
case SPRI_RK:
case SPRI_RR:
case SPRI_RS:
/*
* Allocate the maximum length possible for these
* service actions. According to the spec, the
* target is supposed to return the available
* length in the header, regardless of the
* allocation length. In practice, though, with
* the READ FULL STATUS (SPRI_RS) service action,
* some Seagate drives (in particular a
* Constellation ES, <SEAGATE ST32000444SS 0006>)
* don't return the available length if you only
* allocate the length of the header. So just
* allocate the maximum here so we don't miss
* anything.
*/
res_len = SPRI_MAX_LEN;
break;
case SPRI_RC:
res_len = sizeof(struct scsi_per_res_cap);
break;
default:
/* In theory we should catch this above */
warnx("%s: invalid action %d", __func__, action);
error = 1;
goto bailout;
break;
}
} else {
/*
* XXX KDM need to add length for transport IDs for the
* register and move service action and the register
* service action with the SPEC_I_PT bit set.
*/
if (action == SPRO_REG_MOVE) {
if (num_ids != 1) {
warnx("%s: register and move requires a "
"single transport ID (-I)", __func__);
error = 1;
goto bailout;
}
if (rel_port_set == 0) {
warnx("%s: register and move requires a "
"relative target port (-R)", __func__);
error = 1;
goto bailout;
}
res_len = sizeof(struct scsi_per_res_reg_move) + id_len;
} else {
res_len = sizeof(struct scsi_per_res_out_parms);
if ((action == SPRO_REGISTER)
&& (num_ids != 0)) {
/*
* If the user specifies any IDs with the
* register service action, turn on the
* spec_i_pt bit.
*/
spec_i_pt = 1;
res_len += id_len;
res_len +=
sizeof(struct scsi_per_res_out_trans_ids);
}
}
}
retry:
if (res_buf != NULL) {
free(res_buf);
res_buf = NULL;
}
res_buf = malloc(res_len);
if (res_buf == NULL) {
warn("%s: error allocating %d bytes", __func__, res_len);
error = 1;
goto bailout;
}
bzero(res_buf, res_len);
if (in != 0) {
scsi_persistent_reserve_in(&ccb->csio,
/*retries*/ retry_count,
/*cbfcnp*/ NULL,
/*tag_action*/ task_attr,
/*service_action*/ action,
/*data_ptr*/ res_buf,
/*dxfer_len*/ res_len,
/*sense_len*/ SSD_FULL_SIZE,
/*timeout*/ timeout ? timeout :5000);
} else {
switch (action) {
case SPRO_REGISTER:
if (spec_i_pt != 0) {
struct scsi_per_res_out_trans_ids *id_hdr;
uint8_t *bufptr;
bufptr = res_buf +
sizeof(struct scsi_per_res_out_parms) +
sizeof(struct scsi_per_res_out_trans_ids);
STAILQ_FOREACH(id, &transport_id_list, links) {
bcopy(id->hdr, bufptr, id->alloc_len);
bufptr += id->alloc_len;
}
id_hdr = (struct scsi_per_res_out_trans_ids *)
(res_buf +
sizeof(struct scsi_per_res_out_parms));
scsi_ulto4b(id_len, id_hdr->additional_length);
}
case SPRO_REG_IGNO:
case SPRO_PREEMPT:
case SPRO_PRE_ABO:
case SPRO_RESERVE:
case SPRO_RELEASE:
case SPRO_CLEAR:
case SPRO_REPL_LOST_RES: {
struct scsi_per_res_out_parms *parms;
parms = (struct scsi_per_res_out_parms *)res_buf;
scsi_u64to8b(key, parms->res_key.key);
scsi_u64to8b(sa_key, parms->serv_act_res_key);
if (spec_i_pt != 0)
parms->flags |= SPR_SPEC_I_PT;
if (all_tg_pt != 0)
parms->flags |= SPR_ALL_TG_PT;
if (aptpl != 0)
parms->flags |= SPR_APTPL;
break;
}
case SPRO_REG_MOVE: {
struct scsi_per_res_reg_move *reg_move;
uint8_t *bufptr;
reg_move = (struct scsi_per_res_reg_move *)res_buf;
scsi_u64to8b(key, reg_move->res_key.key);
scsi_u64to8b(sa_key, reg_move->serv_act_res_key);
if (unreg != 0)
reg_move->flags |= SPR_REG_MOVE_UNREG;
if (aptpl != 0)
reg_move->flags |= SPR_REG_MOVE_APTPL;
scsi_ulto2b(rel_tgt_port, reg_move->rel_trgt_port_id);
id = STAILQ_FIRST(&transport_id_list);
/*
* This shouldn't happen, since we already checked
* the number of IDs above.
*/
if (id == NULL) {
warnx("%s: No transport IDs found!", __func__);
error = 1;
goto bailout;
}
bufptr = (uint8_t *)&reg_move[1];
bcopy(id->hdr, bufptr, id->alloc_len);
scsi_ulto4b(id->alloc_len,
reg_move->transport_id_length);
break;
}
default:
break;
}
scsi_persistent_reserve_out(&ccb->csio,
/*retries*/ retry_count,
/*cbfcnp*/ NULL,
/*tag_action*/ task_attr,
/*service_action*/ action,
/*scope*/ scope,
/*res_type*/ res_type,
/*data_ptr*/ res_buf,
/*dxfer_len*/ res_len,
/*sense_len*/ SSD_FULL_SIZE,
/*timeout*/ timeout ?timeout :5000);
}
/* Disable freezing the device queue */
ccb->ccb_h.flags |= CAM_DEV_QFRZDIS;
if (err_recover != 0)
ccb->ccb_h.flags |= CAM_PASS_ERR_RECOVER;
if (cam_send_ccb(device, ccb) < 0) {
warn("error sending PERSISTENT RESERVE %s", (in != 0) ?
"IN" : "OUT");
error = 1;
goto bailout;
}
if ((ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
if (verbosemode != 0) {
cam_error_print(device, ccb, CAM_ESF_ALL,
CAM_EPF_ALL, stderr);
}
error = 1;
goto bailout;
}
if (in == 0)
goto bailout;
valid_len = res_len - ccb->csio.resid;
switch (action) {
case SPRI_RK:
case SPRI_RR:
case SPRI_RS: {
struct scsi_per_res_in_header *hdr;
uint32_t hdr_len;
if (valid_len < sizeof(*hdr)) {
warnx("%s: only got %d valid bytes, need %zd",
__func__, valid_len, sizeof(*hdr));
error = 1;
goto bailout;
}
hdr = (struct scsi_per_res_in_header *)res_buf;
hdr_len = scsi_4btoul(hdr->length);
if (hdr_len > (res_len - sizeof(*hdr))) {
res_len = hdr_len + sizeof(*hdr);
goto retry;
}
if (action == SPRI_RK) {
persist_print_keys(hdr, valid_len);
} else if (action == SPRI_RR) {
persist_print_res(hdr, valid_len);
} else {
persist_print_full(hdr, valid_len);
}
break;
}
case SPRI_RC: {
struct scsi_per_res_cap *cap;
uint32_t cap_len;
if (valid_len < sizeof(*cap)) {
warnx("%s: only got %u valid bytes, need %zd",
__func__, valid_len, sizeof(*cap));
error = 1;
goto bailout;
}
cap = (struct scsi_per_res_cap *)res_buf;
cap_len = scsi_2btoul(cap->length);
if (cap_len != sizeof(*cap)) {
/*
* We should be able to deal with this,
* it's just more trouble.
*/
warnx("%s: reported size %u is different "
"than expected size %zd", __func__,
cap_len, sizeof(*cap));
}
/*
* If there is more data available, grab it all,
* even though we don't really know what to do with
* the extra data since it obviously wasn't in the
* spec when this code was written.
*/
if (cap_len > res_len) {
res_len = cap_len;
goto retry;
}
persist_print_cap(cap, valid_len);
break;
}
default:
break;
}
bailout:
free(res_buf);
if (ccb != NULL)
cam_freeccb(ccb);
STAILQ_FOREACH_SAFE(id, &transport_id_list, links, id2) {
STAILQ_REMOVE(&transport_id_list, id, persist_transport_id,
links);
free(id);
}
return (error);
}
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