/* Invokes a SCSI LOG SELECT command. Return of 0 -> success,
* various SG_LIB_CAT_* positive values or -1 -> other errors */
int
sg_ll_log_select(int sg_fd, int pcr, int sp, int pc, int pg_code,
int subpg_code, unsigned char * paramp, int param_len,
int noisy, int verbose)
{
static const char * const cdb_name_s = "log select";
int res, ret, k, sense_cat;
unsigned char logs_cdb[LOG_SELECT_CMDLEN] =
{LOG_SELECT_CMD, 0, 0, 0, 0, 0, 0, 0, 0, 0};
unsigned char sense_b[SENSE_BUFF_LEN];
struct sg_pt_base * ptvp;
if (param_len > 0xffff) {
pr2ws("%s: param_len too big\n", cdb_name_s);
return -1;
}
logs_cdb[1] = (unsigned char)((pcr ? 2 : 0) | (sp ? 1 : 0));
logs_cdb[2] = (unsigned char)(((pc << 6) & 0xc0) | (pg_code & 0x3f));
logs_cdb[3] = (unsigned char)(subpg_code & 0xff);
sg_put_unaligned_be16((int16_t)param_len, logs_cdb + 7);
if (verbose) {
pr2ws(" %s cdb: ", cdb_name_s);
for (k = 0; k < LOG_SELECT_CMDLEN; ++k)
pr2ws("%02x ", logs_cdb[k]);
pr2ws("\n");
}
if ((verbose > 1) && (param_len > 0)) {
pr2ws(" %s parameter list\n", cdb_name_s);
dStrHexErr((const char *)paramp, param_len, -1);
}
if (NULL == ((ptvp = create_pt_obj(cdb_name_s))))
return -1;
set_scsi_pt_cdb(ptvp, logs_cdb, sizeof(logs_cdb));
set_scsi_pt_sense(ptvp, sense_b, sizeof(sense_b));
set_scsi_pt_data_out(ptvp, paramp, param_len);
res = do_scsi_pt(ptvp, sg_fd, DEF_PT_TIMEOUT, verbose);
ret = sg_cmds_process_resp(ptvp, cdb_name_s, res, 0, sense_b, noisy,
verbose, &sense_cat);
if (-1 == ret)
;
else if (-2 == ret) {
switch (sense_cat) {
case SG_LIB_CAT_RECOVERED:
case SG_LIB_CAT_NO_SENSE:
ret = 0;
break;
default:
ret = sense_cat;
break;
}
} else
ret = 0;
destruct_scsi_pt_obj(ptvp);
return ret;
}
void
sg_print_host_status(int host_status)
{
pr2ws("Host_status=0x%02x ", host_status);
if ((host_status < 0) || (host_status >= LINUX_HOST_BYTES_SZ))
pr2ws("is invalid ");
else
pr2ws("[%s] ", linux_host_bytes[host_status]);
}
static int
sg_cmds_process_helper(const char * leadin, int mx_di_len, int resid,
const uint8_t * sbp, int slen, bool noisy,
int verbose, int * o_sense_cat)
{
int scat, got;
bool n = false;
bool check_data_in = false;
char b[512];
scat = sg_err_category_sense(sbp, slen);
switch (scat) {
case SG_LIB_CAT_NOT_READY:
case SG_LIB_CAT_INVALID_OP:
case SG_LIB_CAT_ILLEGAL_REQ:
case SG_LIB_LBA_OUT_OF_RANGE:
case SG_LIB_CAT_ABORTED_COMMAND:
case SG_LIB_CAT_COPY_ABORTED:
case SG_LIB_CAT_DATA_PROTECT:
case SG_LIB_CAT_PROTECTION:
case SG_LIB_CAT_NO_SENSE:
case SG_LIB_CAT_MISCOMPARE:
n = false;
break;
case SG_LIB_CAT_RECOVERED:
case SG_LIB_CAT_MEDIUM_HARD:
check_data_in = true;
#if defined(__GNUC__)
#if (__GNUC__ >= 7)
__attribute__((fallthrough));
/* FALL THROUGH */
#endif
#endif
case SG_LIB_CAT_UNIT_ATTENTION:
case SG_LIB_CAT_SENSE:
default:
n = noisy;
break;
}
if (verbose || n) {
if (leadin && (strlen(leadin) > 0))
pr2ws("%s:\n", leadin);
sg_get_sense_str(NULL, sbp, slen, (verbose > 1),
sizeof(b), b);
pr2ws("%s", b);
if ((mx_di_len > 0) && (resid > 0)) {
got = mx_di_len - resid;
if ((verbose > 2) || check_data_in || (got > 0))
pr2ws(" %s requested %d bytes (data-in) but got %d "
"bytes\n", pass_through_s, mx_di_len, got);
}
}
if (o_sense_cat)
*o_sense_cat = scat;
return -2;
}
/* Invokes a SCSI SYNCHRONIZE CACHE (10) command. Return of 0 -> success,
* various SG_LIB_CAT_* positive values or -1 -> other errors */
int
sg_ll_sync_cache_10(int sg_fd, int sync_nv, int immed, int group,
unsigned int lba, unsigned int count, int noisy,
int verbose)
{
static const char * const cdb_name_s = "synchronize cache(10)";
int res, ret, k, sense_cat;
unsigned char sc_cdb[SYNCHRONIZE_CACHE_CMDLEN] =
{SYNCHRONIZE_CACHE_CMD, 0, 0, 0, 0, 0, 0, 0, 0, 0};
unsigned char sense_b[SENSE_BUFF_LEN];
struct sg_pt_base * ptvp;
if (sync_nv)
sc_cdb[1] |= 4;
if (immed)
sc_cdb[1] |= 2;
sg_put_unaligned_be32((uint32_t)lba, sc_cdb + 2);
sc_cdb[6] = group & 0x1f;
if (count > 0xffff) {
pr2ws("count too big\n");
return -1;
}
sg_put_unaligned_be16((int16_t)count, sc_cdb + 7);
if (verbose) {
pr2ws(" %s cdb: ", cdb_name_s);
for (k = 0; k < SYNCHRONIZE_CACHE_CMDLEN; ++k)
pr2ws("%02x ", sc_cdb[k]);
pr2ws("\n");
}
if (NULL == ((ptvp = create_pt_obj(cdb_name_s))))
return -1;
set_scsi_pt_cdb(ptvp, sc_cdb, sizeof(sc_cdb));
set_scsi_pt_sense(ptvp, sense_b, sizeof(sense_b));
res = do_scsi_pt(ptvp, sg_fd, DEF_PT_TIMEOUT, verbose);
ret = sg_cmds_process_resp(ptvp, cdb_name_s, res, 0, sense_b, noisy,
verbose, &sense_cat);
if (-1 == ret)
;
else if (-2 == ret) {
switch (sense_cat) {
case SG_LIB_CAT_RECOVERED:
case SG_LIB_CAT_NO_SENSE:
ret = 0;
break;
default:
ret = sense_cat;
break;
}
} else
ret = 0;
destruct_scsi_pt_obj(ptvp);
return ret;
}
/* Invokes a SCSI MODE SELECT (10) command. Return of 0 -> success,
* various SG_LIB_CAT_* positive values or -1 -> other errors,
* v2 adds rtd (revert to defaults) bit (spc5r11). */
int
sg_ll_mode_select10_v2(int sg_fd, bool pf, bool rtd, bool sp, void * paramp,
int param_len, bool noisy, int verbose)
{
static const char * const cdb_s = "mode select(10)";
int res, ret, k, sense_cat;
uint8_t modes_cdb[MODE_SELECT10_CMDLEN] =
{MODE_SELECT10_CMD, 0, 0, 0, 0, 0, 0, 0, 0, 0};
uint8_t sense_b[SENSE_BUFF_LEN];
struct sg_pt_base * ptvp;
modes_cdb[1] = (uint8_t)((pf ? 0x10 : 0x0) | (sp ? 0x1 : 0x0));
if (rtd)
modes_cdb[1] |= 0x2;
sg_put_unaligned_be16((int16_t)param_len, modes_cdb + 7);
if (param_len > 0xffff) {
pr2ws("%s: param_len too big\n", cdb_s);
return -1;
}
if (verbose) {
pr2ws(" %s cdb: ", cdb_s);
for (k = 0; k < MODE_SELECT10_CMDLEN; ++k)
pr2ws("%02x ", modes_cdb[k]);
pr2ws("\n");
}
if (verbose > 1) {
pr2ws(" %s parameter list\n", cdb_s);
hex2stderr((const uint8_t *)paramp, param_len, -1);
}
if (NULL == ((ptvp = create_pt_obj(cdb_s))))
return -1;
set_scsi_pt_cdb(ptvp, modes_cdb, sizeof(modes_cdb));
set_scsi_pt_sense(ptvp, sense_b, sizeof(sense_b));
set_scsi_pt_data_out(ptvp, (uint8_t *)paramp, param_len);
res = do_scsi_pt(ptvp, sg_fd, DEF_PT_TIMEOUT, verbose);
ret = sg_cmds_process_resp(ptvp, cdb_s, res, noisy, verbose, &sense_cat);
if (-1 == ret)
ret = sg_convert_errno(get_scsi_pt_os_err(ptvp));
else if (-2 == ret) {
switch (sense_cat) {
case SG_LIB_CAT_RECOVERED:
case SG_LIB_CAT_NO_SENSE:
ret = 0;
break;
default:
ret = sense_cat;
break;
}
} else
ret = 0;
destruct_scsi_pt_obj(ptvp);
return ret;
}
/* Invokes a SCSI MODE SELECT (6) command. Return of 0 -> success,
* various SG_LIB_CAT_* positive values or -1 -> other errors */
int
sg_ll_mode_select6(int sg_fd, int pf, int sp, void * paramp, int param_len,
int noisy, int verbose)
{
static const char * const cdb_name_s = "mode select(6)";
int res, ret, k, sense_cat;
unsigned char modes_cdb[MODE_SELECT6_CMDLEN] =
{MODE_SELECT6_CMD, 0, 0, 0, 0, 0};
unsigned char sense_b[SENSE_BUFF_LEN];
struct sg_pt_base * ptvp;
modes_cdb[1] = (unsigned char)(((pf << 4) & 0x10) | (sp & 0x1));
modes_cdb[4] = (unsigned char)(param_len & 0xff);
if (param_len > 0xff) {
pr2ws("%s: param_len too big\n", cdb_name_s);
return -1;
}
if (verbose) {
pr2ws(" %s cdb: ", cdb_name_s);
for (k = 0; k < MODE_SELECT6_CMDLEN; ++k)
pr2ws("%02x ", modes_cdb[k]);
pr2ws("\n");
}
if (verbose > 1) {
pr2ws(" %s parameter list\n", cdb_name_s);
dStrHexErr((const char *)paramp, param_len, -1);
}
if (NULL == ((ptvp = create_pt_obj(cdb_name_s))))
return -1;
set_scsi_pt_cdb(ptvp, modes_cdb, sizeof(modes_cdb));
set_scsi_pt_sense(ptvp, sense_b, sizeof(sense_b));
set_scsi_pt_data_out(ptvp, (unsigned char *)paramp, param_len);
res = do_scsi_pt(ptvp, sg_fd, DEF_PT_TIMEOUT, verbose);
ret = sg_cmds_process_resp(ptvp, cdb_name_s, res, 0, sense_b, noisy,
verbose, &sense_cat);
if (-1 == ret)
;
else if (-2 == ret) {
switch (sense_cat) {
case SG_LIB_CAT_RECOVERED:
case SG_LIB_CAT_NO_SENSE:
ret = 0;
break;
default:
ret = sense_cat;
break;
}
} else
ret = 0;
destruct_scsi_pt_obj(ptvp);
return ret;
}
/* Invokes a SCSI READ CAPACITY (16) command. Returns 0 -> success,
* various SG_LIB_CAT_* positive values or -1 -> other errors */
int
sg_ll_readcap_16(int sg_fd, int pmi, uint64_t llba, void * resp,
int mx_resp_len, int noisy, int verbose)
{
static const char * const cdb_name_s = "read capacity(16)";
int k, ret, res, sense_cat;
unsigned char rc_cdb[SERVICE_ACTION_IN_16_CMDLEN] =
{SERVICE_ACTION_IN_16_CMD, READ_CAPACITY_16_SA,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
unsigned char sense_b[SENSE_BUFF_LEN];
struct sg_pt_base * ptvp;
if (pmi) { /* lbs only valid when pmi set */
rc_cdb[14] |= 1;
sg_put_unaligned_be64(llba, rc_cdb + 2);
}
/* Allocation length, no guidance in SBC-2 rev 15b */
sg_put_unaligned_be32((uint32_t)mx_resp_len, rc_cdb + 10);
if (verbose) {
pr2ws(" %s cdb: ", cdb_name_s);
for (k = 0; k < SERVICE_ACTION_IN_16_CMDLEN; ++k)
pr2ws("%02x ", rc_cdb[k]);
pr2ws("\n");
}
if (NULL == ((ptvp = create_pt_obj(cdb_name_s))))
return -1;
set_scsi_pt_cdb(ptvp, rc_cdb, sizeof(rc_cdb));
set_scsi_pt_sense(ptvp, sense_b, sizeof(sense_b));
set_scsi_pt_data_in(ptvp, (unsigned char *)resp, mx_resp_len);
res = do_scsi_pt(ptvp, sg_fd, DEF_PT_TIMEOUT, verbose);
ret = sg_cmds_process_resp(ptvp, cdb_name_s, res, mx_resp_len, sense_b,
noisy, verbose, &sense_cat);
if (-1 == ret)
;
else if (-2 == ret) {
switch (sense_cat) {
case SG_LIB_CAT_RECOVERED:
case SG_LIB_CAT_NO_SENSE:
ret = 0;
break;
default:
ret = sense_cat;
break;
}
} else
ret = 0;
destruct_scsi_pt_obj(ptvp);
return ret;
}
/* Invokes a SCSI START STOP UNIT command (SBC + MMC).
* Return of 0 -> success,
* various SG_LIB_CAT_* positive values or -1 -> other errors.
* SBC-3 and MMC partially overlap on the power_condition_modifier(sbc) and
* format_layer_number(mmc) fields. They also overlap on the noflush(sbc)
* and fl(mmc) one bit field. This is the cause of the awkardly named
* pc_mod__fl_num and noflush__fl arguments to this function.
* */
int
sg_ll_start_stop_unit_pt(struct sg_pt_base * ptvp, bool immed,
int pc_mod__fl_num, int power_cond, bool noflush__fl,
bool loej, bool start, bool noisy, int verbose)
{
static const char * const cdb_s = "start stop unit";
int k, res, ret, sense_cat;
uint8_t ssuBlk[START_STOP_CMDLEN] = {START_STOP_CMD, 0, 0, 0, 0, 0};
uint8_t sense_b[SENSE_BUFF_LEN];
if (immed)
ssuBlk[1] = 0x1;
ssuBlk[3] = pc_mod__fl_num & 0xf; /* bits 2 and 3 are reserved in MMC */
ssuBlk[4] = ((power_cond & 0xf) << 4);
if (noflush__fl)
ssuBlk[4] |= 0x4;
if (loej)
ssuBlk[4] |= 0x2;
if (start)
ssuBlk[4] |= 0x1;
if (verbose) {
pr2ws(" %s command:", cdb_s);
for (k = 0; k < (int)sizeof(ssuBlk); ++k)
pr2ws(" %02x", ssuBlk[k]);
pr2ws("\n");
}
clear_scsi_pt_obj(ptvp);
set_scsi_pt_cdb(ptvp, ssuBlk, sizeof(ssuBlk));
set_scsi_pt_sense(ptvp, sense_b, sizeof(sense_b));
res = do_scsi_pt(ptvp, -1, START_PT_TIMEOUT, verbose);
ret = sg_cmds_process_resp(ptvp, cdb_s, res, noisy, verbose, &sense_cat);
if (-1 == ret)
ret = sg_convert_errno(get_scsi_pt_os_err(ptvp));
else if (-2 == ret) {
switch (sense_cat) {
case SG_LIB_CAT_RECOVERED:
case SG_LIB_CAT_NO_SENSE:
ret = 0;
break;
default:
ret = sense_cat;
break;
}
} else
ret = 0;
return ret;
}
/* Returns 1 if no errors found and thus nothing printed; otherwise
prints error/warning (prefix by 'leadin') and returns 0. */
static int
sg_linux_sense_print(const char * leadin, int scsi_status, int host_status,
int driver_status, const unsigned char * sense_buffer,
int sb_len, int raw_sinfo)
{
int done_leadin = 0;
int done_sense = 0;
scsi_status &= 0x7e; /*sanity */
if ((0 == scsi_status) && (0 == host_status) && (0 == driver_status))
return 1; /* No problems */
if (0 != scsi_status) {
if (leadin)
pr2ws("%s: ", leadin);
done_leadin = 1;
pr2ws("SCSI status: ");
sg_print_scsi_status(scsi_status);
pr2ws("\n");
if (sense_buffer && ((scsi_status == SAM_STAT_CHECK_CONDITION) ||
(scsi_status == SAM_STAT_COMMAND_TERMINATED))) {
/* SAM_STAT_COMMAND_TERMINATED is obsolete */
sg_print_sense(0, sense_buffer, sb_len, raw_sinfo);
done_sense = 1;
}
}
if (0 != host_status) {
if (leadin && (! done_leadin))
pr2ws("%s: ", leadin);
if (done_leadin)
pr2ws("plus...: ");
else
done_leadin = 1;
sg_print_host_status(host_status);
pr2ws("\n");
}
if (0 != driver_status) {
if (done_sense &&
(SG_LIB_DRIVER_SENSE == (SG_LIB_DRIVER_MASK & driver_status)))
return 0;
if (leadin && (! done_leadin))
pr2ws("%s: ", leadin);
if (done_leadin)
pr2ws("plus...: ");
else
done_leadin = 1;
sg_print_driver_status(driver_status);
pr2ws("\n");
if (sense_buffer && (! done_sense) &&
(SG_LIB_DRIVER_SENSE == (SG_LIB_DRIVER_MASK & driver_status)))
sg_print_sense(0, sense_buffer, sb_len, raw_sinfo);
}
return 0;
}
/* Yields most of first 36 bytes of a standard INQUIRY (evpd==0) response.
* Returns 0 when successful, various SG_LIB_CAT_* positive values, negated
* errno or -1 -> other errors */
int
sg_simple_inquiry(int sg_fd, struct sg_simple_inquiry_resp * inq_data,
bool noisy, int verbose)
{
int ret;
uint8_t * inq_resp = NULL;
uint8_t * free_irp = NULL;
if (inq_data) {
memset(inq_data, 0, sizeof(* inq_data));
inq_data->peripheral_qualifier = 0x3;
inq_data->peripheral_type = 0x1f;
}
inq_resp = sg_memalign(SAFE_STD_INQ_RESP_LEN, 0, &free_irp, verbose > 4);
if (NULL == inq_resp) {
pr2ws("%s: out of memory\n", __func__);
return sg_convert_errno(ENOMEM);
}
ret = sg_ll_inquiry_v2(sg_fd, false, 0, inq_resp, SAFE_STD_INQ_RESP_LEN,
0, NULL, noisy, verbose);
if (inq_data && (0 == ret)) {
inq_data->peripheral_qualifier = (inq_resp[0] >> 5) & 0x7;
inq_data->peripheral_type = inq_resp[0] & 0x1f;
inq_data->byte_1 = inq_resp[1];
inq_data->version = inq_resp[2];
inq_data->byte_3 = inq_resp[3];
inq_data->byte_5 = inq_resp[5];
inq_data->byte_6 = inq_resp[6];
inq_data->byte_7 = inq_resp[7];
memcpy(inq_data->vendor, inq_resp + 8, 8);
memcpy(inq_data->product, inq_resp + 16, 16);
memcpy(inq_data->revision, inq_resp + 32, 4);
}
void
sg_print_driver_status(int driver_status)
{
int driv, sugg;
const char * driv_cp = "invalid";
const char * sugg_cp = "invalid";
driv = driver_status & SG_LIB_DRIVER_MASK;
if (driv < LINUX_DRIVER_BYTES_SZ)
driv_cp = linux_driver_bytes[driv];
sugg = (driver_status & SG_LIB_SUGGEST_MASK) >> 4;
if (sugg < LINUX_DRIVER_SUGGESTS_SZ)
sugg_cp = linux_driver_suggests[sugg];
pr2ws("Driver_status=0x%02x", driver_status);
pr2ws(" [%s, %s] ", driv_cp, sugg_cp);
}
static struct sg_pt_base *
create_pt_obj(const char * cname)
{
struct sg_pt_base * ptvp = construct_scsi_pt_obj();
if (NULL == ptvp)
pr2ws("%s: out of memory\n", cname);
return ptvp;
}
/* Invokes a SCSI PREVENT ALLOW MEDIUM REMOVAL command
* [was in SPC-3 but displaced from SPC-4 into SBC-3, MMC-5, SSC-3]
* prevent==0 allows removal, prevent==1 prevents removal ...
* Return of 0 -> success,
* various SG_LIB_CAT_* positive values or -1 -> other errors */
int
sg_ll_prevent_allow(int sg_fd, int prevent, int noisy, int verbose)
{
static const char * const cdb_name_s = "prevent allow medium removal";
int k, res, ret, sense_cat;
unsigned char p_cdb[PREVENT_ALLOW_CMDLEN] =
{PREVENT_ALLOW_CMD, 0, 0, 0, 0, 0};
unsigned char sense_b[SENSE_BUFF_LEN];
struct sg_pt_base * ptvp;
if ((prevent < 0) || (prevent > 3)) {
pr2ws("prevent argument should be 0, 1, 2 or 3\n");
return -1;
}
p_cdb[4] |= (prevent & 0x3);
if (verbose) {
pr2ws(" %s cdb: ", cdb_name_s);
for (k = 0; k < PREVENT_ALLOW_CMDLEN; ++k)
pr2ws("%02x ", p_cdb[k]);
pr2ws("\n");
}
if (NULL == ((ptvp = create_pt_obj(cdb_name_s))))
return -1;
set_scsi_pt_cdb(ptvp, p_cdb, sizeof(p_cdb));
set_scsi_pt_sense(ptvp, sense_b, sizeof(sense_b));
res = do_scsi_pt(ptvp, sg_fd, DEF_PT_TIMEOUT, verbose);
ret = sg_cmds_process_resp(ptvp, cdb_name_s, res, 0, sense_b, noisy,
verbose, &sense_cat);
if (-1 == ret)
;
else if (-2 == ret) {
switch (sense_cat) {
case SG_LIB_CAT_RECOVERED:
case SG_LIB_CAT_NO_SENSE:
ret = 0;
break;
default:
ret = sense_cat;
break;
}
} else
ret = 0;
destruct_scsi_pt_obj(ptvp);
return ret;
}
/* Invokes a SCSI START STOP UNIT command (SBC + MMC).
* Return of 0 -> success,
* various SG_LIB_CAT_* positive values or -1 -> other errors.
* SBC-3 and MMC partially overlap on the power_condition_modifier(sbc) and
* format_layer_number(mmc) fields. They also overlap on the noflush(sbc)
* and fl(mmc) one bit field. This is the cause of the awkardly named
* pc_mod__fl_num and noflush__fl arguments to this function.
* */
int
sg_ll_start_stop_unit(int sg_fd, int immed, int pc_mod__fl_num,
int power_cond, int noflush__fl, int loej, int start,
int noisy, int verbose)
{
static const char * const cdb_name_s = "start stop unit";
int k, res, ret, sense_cat;
struct sg_pt_base * ptvp;
unsigned char ssuBlk[START_STOP_CMDLEN] = {START_STOP_CMD, 0, 0, 0, 0, 0};
unsigned char sense_b[SENSE_BUFF_LEN];
ssuBlk[1] = immed & 1;
ssuBlk[3] = pc_mod__fl_num & 0xf; /* bits 2 and 3 are reserved in MMC */
ssuBlk[4] = ((power_cond & 0xf) << 4) | (noflush__fl ? 0x4 : 0) |
(loej ? 0x2 : 0) | (start ? 0x1 : 0);
if (verbose) {
pr2ws(" %s command:", cdb_name_s);
for (k = 0; k < (int)sizeof(ssuBlk); ++k)
pr2ws(" %02x", ssuBlk[k]);
pr2ws("\n");
}
if (NULL == ((ptvp = create_pt_obj(cdb_name_s))))
return -1;
set_scsi_pt_cdb(ptvp, ssuBlk, sizeof(ssuBlk));
set_scsi_pt_sense(ptvp, sense_b, sizeof(sense_b));
res = do_scsi_pt(ptvp, sg_fd, START_PT_TIMEOUT, verbose);
ret = sg_cmds_process_resp(ptvp, cdb_name_s, res, 0, sense_b, noisy,
verbose, &sense_cat);
if (-1 == ret)
;
else if (-2 == ret) {
switch (sense_cat) {
case SG_LIB_CAT_RECOVERED:
case SG_LIB_CAT_NO_SENSE:
ret = 0;
break;
default:
ret = sense_cat;
break;
}
} else
ret = 0;
destruct_scsi_pt_obj(ptvp);
return ret;
}
/* Invokes a SCSI READ CAPACITY (10) command. Returns 0 -> success,
* various SG_LIB_CAT_* positive values or -1 -> other errors */
int
sg_ll_readcap_10(int sg_fd, bool pmi, unsigned int lba, void * resp,
int mx_resp_len, bool noisy, int verbose)
{
static const char * const cdb_s = "read capacity(10)";
int k, ret, res, sense_cat;
uint8_t rc_cdb[READ_CAPACITY_10_CMDLEN] =
{READ_CAPACITY_10_CMD, 0, 0, 0, 0, 0, 0, 0, 0, 0};
uint8_t sense_b[SENSE_BUFF_LEN];
struct sg_pt_base * ptvp;
if (pmi) { /* lbs only valid when pmi set */
rc_cdb[8] |= 1;
sg_put_unaligned_be32((uint32_t)lba, rc_cdb + 2);
}
if (verbose) {
pr2ws(" %s cdb: ", cdb_s);
for (k = 0; k < READ_CAPACITY_10_CMDLEN; ++k)
pr2ws("%02x ", rc_cdb[k]);
pr2ws("\n");
}
if (NULL == ((ptvp = create_pt_obj(cdb_s))))
return -1;
set_scsi_pt_cdb(ptvp, rc_cdb, sizeof(rc_cdb));
set_scsi_pt_sense(ptvp, sense_b, sizeof(sense_b));
set_scsi_pt_data_in(ptvp, (uint8_t *)resp, mx_resp_len);
res = do_scsi_pt(ptvp, sg_fd, DEF_PT_TIMEOUT, verbose);
ret = sg_cmds_process_resp(ptvp, cdb_s, res, noisy, verbose, &sense_cat);
if (-1 == ret)
ret = sg_convert_errno(get_scsi_pt_os_err(ptvp));
else if (-2 == ret) {
switch (sense_cat) {
case SG_LIB_CAT_RECOVERED:
case SG_LIB_CAT_NO_SENSE:
ret = 0;
break;
default:
ret = sense_cat;
break;
}
} else
ret = 0;
destruct_scsi_pt_obj(ptvp);
return ret;
}
/* Invokes a SCSI LOG SENSE command. Return of 0 -> success,
* various SG_LIB_CAT_* positive values or -1 -> other errors */
int
sg_ll_log_sense(int sg_fd, int ppc, int sp, int pc, int pg_code,
int subpg_code, int paramp, unsigned char * resp,
int mx_resp_len, int noisy, int verbose)
{
static const char * const cdb_name_s = "log sense";
int res, ret, k, sense_cat, resid;
unsigned char logs_cdb[LOG_SENSE_CMDLEN] =
{LOG_SENSE_CMD, 0, 0, 0, 0, 0, 0, 0, 0, 0};
unsigned char sense_b[SENSE_BUFF_LEN];
struct sg_pt_base * ptvp;
if (mx_resp_len > 0xffff) {
pr2ws("mx_resp_len too big\n");
return -1;
}
logs_cdb[1] = (unsigned char)((ppc ? 2 : 0) | (sp ? 1 : 0));
logs_cdb[2] = (unsigned char)(((pc << 6) & 0xc0) | (pg_code & 0x3f));
logs_cdb[3] = (unsigned char)(subpg_code & 0xff);
sg_put_unaligned_be16((int16_t)paramp, logs_cdb + 5);
sg_put_unaligned_be16((int16_t)mx_resp_len, logs_cdb + 7);
if (verbose) {
pr2ws(" %s cdb: ", cdb_name_s);
for (k = 0; k < LOG_SENSE_CMDLEN; ++k)
pr2ws("%02x ", logs_cdb[k]);
pr2ws("\n");
}
if (NULL == ((ptvp = create_pt_obj(cdb_name_s))))
return -1;
set_scsi_pt_cdb(ptvp, logs_cdb, sizeof(logs_cdb));
set_scsi_pt_sense(ptvp, sense_b, sizeof(sense_b));
set_scsi_pt_data_in(ptvp, resp, mx_resp_len);
res = do_scsi_pt(ptvp, sg_fd, DEF_PT_TIMEOUT, verbose);
ret = sg_cmds_process_resp(ptvp, cdb_name_s, res, mx_resp_len,
sense_b, noisy, verbose, &sense_cat);
resid = get_scsi_pt_resid(ptvp);
destruct_scsi_pt_obj(ptvp);
if (-1 == ret)
;
else if (-2 == ret) {
switch (sense_cat) {
case SG_LIB_CAT_RECOVERED:
case SG_LIB_CAT_NO_SENSE:
ret = 0;
break;
default:
ret = sense_cat;
break;
}
} else {
if ((mx_resp_len > 3) && (ret < 4)) {
/* resid indicates LOG SENSE response length bad, so zero it */
resp[2] = 0;
resp[3] = 0;
}
ret = 0;
}
if (resid > 0) {
if (resid > mx_resp_len) {
pr2ws("%s: resid (%d) should never exceed requested len=%d\n",
cdb_name_s, resid, mx_resp_len);
return ret ? ret : SG_LIB_CAT_MALFORMED;
}
/* zero unfilled section of response buffer */
memset((unsigned char *)resp + (mx_resp_len - resid), 0, resid);
}
return ret;
}
/* Fetches current, changeable, default and/or saveable modes pages as
* indicated by pcontrol_arr for given pg_code and sub_pg_code. If
* mode6==0 then use MODE SENSE (10) else use MODE SENSE (6). If
* flexible set and mode data length seems wrong then try and
* fix (compensating hack for bad device or driver). pcontrol_arr
* should have 4 elements for output of current, changeable, default
* and saved values respectively. Each element should be NULL or
* at least mx_mpage_len bytes long.
* Return of 0 -> overall success, various SG_LIB_CAT_* positive values or
* -1 -> other errors.
* If success_mask pointer is not NULL then first zeros it. Then set bits
* 0, 1, 2 and/or 3 if the current, changeable, default and saved values
* respectively have been fetched. If error on current page
* then stops and returns that error; otherwise continues if an error is
* detected but returns the first error encountered. */
int
sg_get_mode_page_controls(int sg_fd, int mode6, int pg_code, int sub_pg_code,
int dbd, int flexible, int mx_mpage_len,
int * success_mask, void * pcontrol_arr[],
int * reported_len, int verbose)
{
int k, n, res, offset, calc_len, xfer_len, resp_mode6;
unsigned char buff[MODE_RESP_ARB_LEN];
char ebuff[EBUFF_SZ];
int first_err = 0;
if (success_mask)
*success_mask = 0;
if (reported_len)
*reported_len = 0;
if (mx_mpage_len < 4)
return 0;
memset(ebuff, 0, sizeof(ebuff));
/* first try to find length of current page response */
memset(buff, 0, MODE10_RESP_HDR_LEN);
if (mode6) /* want first 8 bytes just in case */
res = sg_ll_mode_sense6(sg_fd, dbd, 0 /* pc */, pg_code,
sub_pg_code, buff, MODE10_RESP_HDR_LEN, 1,
verbose);
else
res = sg_ll_mode_sense10(sg_fd, 0 /* llbaa */, dbd,
0 /* pc */, pg_code, sub_pg_code, buff,
MODE10_RESP_HDR_LEN, 1, verbose);
if (0 != res)
return res;
n = buff[0];
if (reported_len)
*reported_len = mode6 ? (n + 1) : (sg_get_unaligned_be16(buff) + 2);
resp_mode6 = mode6;
if (flexible) {
if (mode6 && (n < 3)) {
resp_mode6 = 0;
if (verbose)
pr2ws(">>> msense(6) but resp[0]=%d so try msense(10) "
"response processing\n", n);
}
if ((0 == mode6) && (n > 5)) {
if ((n > 11) && (0 == (n % 2)) && (0 == buff[4]) &&
(0 == buff[5]) && (0 == buff[6])) {
buff[1] = n;
buff[0] = 0;
if (verbose)
pr2ws(">>> msense(10) but resp[0]=%d and not msense(6) "
"response so fix length\n", n);
} else
resp_mode6 = 1;
}
}
if (verbose && (resp_mode6 != mode6))
pr2ws(">>> msense(%d) but resp[0]=%d so switch response "
"processing\n", (mode6 ? 6 : 10), buff[0]);
calc_len = resp_mode6 ? (buff[0] + 1) : (sg_get_unaligned_be16(buff) + 2);
if (calc_len > MODE_RESP_ARB_LEN)
calc_len = MODE_RESP_ARB_LEN;
offset = sg_mode_page_offset(buff, calc_len, resp_mode6,
ebuff, EBUFF_SZ);
if (offset < 0) {
if (('\0' != ebuff[0]) && (verbose > 0))
pr2ws("%s: %s\n", __func__, ebuff);
return SG_LIB_CAT_MALFORMED;
}
xfer_len = calc_len - offset;
if (xfer_len > mx_mpage_len)
xfer_len = mx_mpage_len;
for (k = 0; k < 4; ++k) {
if (NULL == pcontrol_arr[k])
continue;
memset(pcontrol_arr[k], 0, mx_mpage_len);
if (mode6)
res = sg_ll_mode_sense6(sg_fd, dbd, k /* pc */,
pg_code, sub_pg_code, buff,
calc_len, 1, verbose);
else
res = sg_ll_mode_sense10(sg_fd, 0 /* llbaa */, dbd,
k /* pc */, pg_code, sub_pg_code,
buff, calc_len, 1, verbose);
if (0 != res) {
if (0 == first_err)
first_err = res;
if (0 == k)
break; /* if problem on current page, it won't improve */
else
continue;
}
if (xfer_len > 0)
memcpy(pcontrol_arr[k], buff + offset, xfer_len);
if (success_mask)
*success_mask |= (1 << k);
}
return first_err;
}
/* Invokes a SCSI MODE SENSE (10) command. Return of 0 -> success,
* various SG_LIB_CAT_* positive values or -1 -> other errors */
int
sg_ll_mode_sense10(int sg_fd, int llbaa, int dbd, int pc, int pg_code,
int sub_pg_code, void * resp, int mx_resp_len,
int noisy, int verbose)
{
static const char * const cdb_name_s = "mode sense(10)";
int res, ret, k, sense_cat, resid;
unsigned char modes_cdb[MODE_SENSE10_CMDLEN] =
{MODE_SENSE10_CMD, 0, 0, 0, 0, 0, 0, 0, 0, 0};
unsigned char sense_b[SENSE_BUFF_LEN];
struct sg_pt_base * ptvp;
modes_cdb[1] = (unsigned char)((dbd ? 0x8 : 0) | (llbaa ? 0x10 : 0));
modes_cdb[2] = (unsigned char)(((pc << 6) & 0xc0) | (pg_code & 0x3f));
modes_cdb[3] = (unsigned char)(sub_pg_code & 0xff);
sg_put_unaligned_be16((int16_t)mx_resp_len, modes_cdb + 7);
if (mx_resp_len > 0xffff) {
pr2ws("mx_resp_len too big\n");
return -1;
}
if (verbose) {
pr2ws(" %s cdb: ", cdb_name_s);
for (k = 0; k < MODE_SENSE10_CMDLEN; ++k)
pr2ws("%02x ", modes_cdb[k]);
pr2ws("\n");
}
if (NULL == ((ptvp = create_pt_obj(cdb_name_s))))
return -1;
set_scsi_pt_cdb(ptvp, modes_cdb, sizeof(modes_cdb));
set_scsi_pt_sense(ptvp, sense_b, sizeof(sense_b));
set_scsi_pt_data_in(ptvp, (unsigned char *)resp, mx_resp_len);
res = do_scsi_pt(ptvp, sg_fd, DEF_PT_TIMEOUT, verbose);
ret = sg_cmds_process_resp(ptvp, cdb_name_s, res, mx_resp_len, sense_b,
noisy, verbose, &sense_cat);
resid = get_scsi_pt_resid(ptvp);
destruct_scsi_pt_obj(ptvp);
if (-1 == ret)
;
else if (-2 == ret) {
switch (sense_cat) {
case SG_LIB_CAT_RECOVERED:
case SG_LIB_CAT_NO_SENSE:
ret = 0;
break;
default:
ret = sense_cat;
break;
}
} else {
if ((verbose > 2) && (ret > 0)) {
pr2ws(" %s: response", cdb_name_s);
if (3 == verbose) {
pr2ws("%s:\n", (ret > 256 ? ", first 256 bytes" : ""));
dStrHexErr((const char *)resp, (ret > 256 ? 256 : ret), -1);
} else {
pr2ws(":\n");
dStrHexErr((const char *)resp, ret, 0);
}
}
ret = 0;
}
if (resid > 0) {
if (resid > mx_resp_len) {
pr2ws("%s: resid (%d) should never exceed requested len=%d\n",
cdb_name_s, resid, mx_resp_len);
return ret ? ret : SG_LIB_CAT_MALFORMED;
}
/* zero unfilled section of response buffer */
memset((unsigned char *)resp + (mx_resp_len - resid), 0, resid);
}
return ret;
}
/* Fetches current, changeable, default and/or saveable modes pages as
* indicated by pcontrol_arr for given pg_code and sub_pg_code. If
* mode6==false then use MODE SENSE (10) else use MODE SENSE (6). If
* flexible set and mode data length seems wrong then try and
* fix (compensating hack for bad device or driver). pcontrol_arr
* should have 4 elements for output of current, changeable, default
* and saved values respectively. Each element should be NULL or
* at least mx_mpage_len bytes long.
* Return of 0 -> overall success, various SG_LIB_CAT_* positive values or
* -1 -> other errors.
* If success_mask pointer is not NULL then first zeros it. Then set bits
* 0, 1, 2 and/or 3 if the current, changeable, default and saved values
* respectively have been fetched. If error on current page
* then stops and returns that error; otherwise continues if an error is
* detected but returns the first error encountered. */
int
sg_get_mode_page_controls(int sg_fd, bool mode6, int pg_code, int sub_pg_code,
bool dbd, bool flexible, int mx_mpage_len,
int * success_mask, void * pcontrol_arr[],
int * reported_lenp, int verbose)
{
bool resp_mode6;
int k, n, res, offset, calc_len, xfer_len;
int resid = 0;
const int msense10_hlen = MODE10_RESP_HDR_LEN;
uint8_t buff[MODE_RESP_ARB_LEN];
char ebuff[EBUFF_SZ];
int first_err = 0;
if (success_mask)
*success_mask = 0;
if (reported_lenp)
*reported_lenp = 0;
if (mx_mpage_len < 4)
return 0;
memset(ebuff, 0, sizeof(ebuff));
/* first try to find length of current page response */
memset(buff, 0, msense10_hlen);
if (mode6) /* want first 8 bytes just in case */
res = sg_ll_mode_sense6(sg_fd, dbd, 0 /* pc */, pg_code,
sub_pg_code, buff, msense10_hlen, true,
verbose);
else /* MODE SENSE(10) obviously */
res = sg_ll_mode_sense10_v2(sg_fd, false /* llbaa */, dbd,
0 /* pc */, pg_code, sub_pg_code, buff,
msense10_hlen, 0, &resid, true, verbose);
if (0 != res)
return res;
n = buff[0];
if (reported_lenp) {
int m;
m = sg_msense_calc_length(buff, msense10_hlen, mode6, NULL) - resid;
if (m < 0) /* Grrr, this should not happen */
m = 0;
*reported_lenp = m;
}
resp_mode6 = mode6;
if (flexible) {
if (mode6 && (n < 3)) {
resp_mode6 = false;
if (verbose)
pr2ws(">>> msense(6) but resp[0]=%d so try msense(10) "
"response processing\n", n);
}
if ((! mode6) && (n > 5)) {
if ((n > 11) && (0 == (n % 2)) && (0 == buff[4]) &&
(0 == buff[5]) && (0 == buff[6])) {
buff[1] = n;
buff[0] = 0;
if (verbose)
pr2ws(">>> msense(10) but resp[0]=%d and not msense(6) "
"response so fix length\n", n);
} else
resp_mode6 = true;
}
}
if (verbose && (resp_mode6 != mode6))
pr2ws(">>> msense(%d) but resp[0]=%d so switch response "
"processing\n", (mode6 ? 6 : 10), buff[0]);
calc_len = sg_msense_calc_length(buff, msense10_hlen, resp_mode6, NULL);
if (calc_len > MODE_RESP_ARB_LEN)
calc_len = MODE_RESP_ARB_LEN;
offset = sg_mode_page_offset(buff, calc_len, resp_mode6, ebuff, EBUFF_SZ);
if (offset < 0) {
if (('\0' != ebuff[0]) && (verbose > 0))
pr2ws("%s: %s\n", __func__, ebuff);
return SG_LIB_CAT_MALFORMED;
}
xfer_len = calc_len - offset;
if (xfer_len > mx_mpage_len)
xfer_len = mx_mpage_len;
for (k = 0; k < 4; ++k) {
if (NULL == pcontrol_arr[k])
continue;
memset(pcontrol_arr[k], 0, mx_mpage_len);
resid = 0;
if (mode6)
res = sg_ll_mode_sense6(sg_fd, dbd, k /* pc */,
pg_code, sub_pg_code, buff,
calc_len, true, verbose);
else
res = sg_ll_mode_sense10_v2(sg_fd, false /* llbaa */, dbd,
k /* pc */, pg_code, sub_pg_code,
buff, calc_len, 0, &resid, true,
verbose);
if (res || resid) {
if (0 == first_err) {
if (res)
first_err = res;
else {
first_err = -49; /* unexpected resid != 0 */
if (verbose)
pr2ws("%s: unexpected resid=%d, page=0x%x, "
"pcontrol=%d\n", __func__, resid, pg_code, k);
}
}
if (0 == k)
break; /* if problem on current page, it won't improve */
else
continue;
}
if (xfer_len > 0)
memcpy(pcontrol_arr[k], buff + offset, xfer_len);
if (success_mask)
*success_mask |= (1 << k);
}
return first_err;
}
/* This is a helper function used by sg_cmds_* implementations after the
* call to the pass-through. pt_res is returned from do_scsi_pt(). If valid
* sense data is found it is decoded and output to sg_warnings_strm (def:
* stderr); depending on the 'noisy' and 'verbose' settings. Returns -2 for
* "sense" category (may not be fatal), -1 for failed, 0, or a positive
* number. If 'mx_di_len > 0' then asks pass-through for resid and returns
* (mx_di_len - resid); otherwise returns 0. So for data-in it should return
* the actual number of bytes received. For data-out (to device) or no data
* call with 'mx_di_len' set to 0 or less. If -2 returned then sense category
* output via 'o_sense_cat' pointer (if not NULL). Note that several sense
* categories also have data in bytes received; -2 is still returned. */
int
sg_cmds_process_resp(struct sg_pt_base * ptvp, const char * leadin,
int pt_res, int mx_di_len, const uint8_t * sbp,
bool noisy, int verbose, int * o_sense_cat)
{
int got, cat, duration, slen, resid, resp_code, sstat;
bool transport_sense;
char b[1024];
if (NULL == leadin)
leadin = "";
if (pt_res < 0) {
#ifdef SG_LIB_LINUX
if (verbose)
pr2ws("%s: %s os error: %s\n", leadin, pass_through_s,
safe_strerror(-pt_res));
if ((-ENXIO == pt_res) && o_sense_cat) {
if (verbose > 2)
pr2ws("map ENXIO to SG_LIB_CAT_NOT_READY\n");
*o_sense_cat = SG_LIB_CAT_NOT_READY;
return -2;
} else if (noisy && (0 == verbose))
pr2ws("%s: %s os error: %s\n", leadin, pass_through_s,
safe_strerror(-pt_res));
#else
if (noisy || verbose)
pr2ws("%s: %s os error: %s\n", leadin, pass_through_s,
safe_strerror(-pt_res));
#endif
return -1;
} else if (SCSI_PT_DO_BAD_PARAMS == pt_res) {
pr2ws("%s: bad %s setup\n", leadin, pass_through_s);
return -1;
} else if (SCSI_PT_DO_TIMEOUT == pt_res) {
pr2ws("%s: %s timeout\n", leadin, pass_through_s);
return -1;
}
if ((verbose > 2) && ((duration = get_scsi_pt_duration_ms(ptvp)) >= 0))
pr2ws(" duration=%d ms\n", duration);
resid = (mx_di_len > 0) ? get_scsi_pt_resid(ptvp) : 0;
slen = get_scsi_pt_sense_len(ptvp);
switch ((cat = get_scsi_pt_result_category(ptvp))) {
case SCSI_PT_RESULT_GOOD:
if (sbp && (slen > 7)) {
resp_code = sbp[0] & 0x7f;
/* SBC referrals can have status=GOOD and sense_key=COMPLETED */
if (resp_code >= 0x70) {
if (resp_code < 0x72) {
if (SPC_SK_NO_SENSE != (0xf & sbp[2]))
sg_err_category_sense(sbp, slen);
} else if (resp_code < 0x74) {
if (SPC_SK_NO_SENSE != (0xf & sbp[1]))
sg_err_category_sense(sbp, slen);
}
}
}
if (mx_di_len > 0) {
got = mx_di_len - resid;
if ((verbose > 1) && (resid != 0))
pr2ws(" %s: %s requested %d bytes (data-in) but got %d "
"bytes\n", leadin, pass_through_s, mx_di_len, got);
if (got >= 0)
return got;
else {
if (verbose)
pr2ws(" %s: %s can't get negative bytes, say it got "
"none\n", leadin, pass_through_s);
return 0;
}
} else
return 0;
case SCSI_PT_RESULT_STATUS: /* other than GOOD and CHECK CONDITION */
sstat = get_scsi_pt_status_response(ptvp);
if (o_sense_cat) {
switch (sstat) {
case SAM_STAT_RESERVATION_CONFLICT:
*o_sense_cat = SG_LIB_CAT_RES_CONFLICT;
return -2;
case SAM_STAT_CONDITION_MET:
*o_sense_cat = SG_LIB_CAT_CONDITION_MET;
return -2;
case SAM_STAT_BUSY:
*o_sense_cat = SG_LIB_CAT_BUSY;
return -2;
case SAM_STAT_TASK_SET_FULL:
*o_sense_cat = SG_LIB_CAT_TS_FULL;
return -2;
case SAM_STAT_ACA_ACTIVE:
*o_sense_cat = SG_LIB_CAT_ACA_ACTIVE;
return -2;
case SAM_STAT_TASK_ABORTED:
*o_sense_cat = SG_LIB_CAT_TASK_ABORTED;
return -2;
default:
break;
}
}
if (verbose || noisy) {
sg_get_scsi_status_str(sstat, sizeof(b), b);
pr2ws("%s: scsi status: %s\n", leadin, b);
}
return -1;
case SCSI_PT_RESULT_SENSE:
return sg_cmds_process_helper(leadin, mx_di_len, resid, sbp, slen,
noisy, verbose, o_sense_cat);
case SCSI_PT_RESULT_TRANSPORT_ERR:
if (verbose || noisy) {
get_scsi_pt_transport_err_str(ptvp, sizeof(b), b);
pr2ws("%s: transport: %s\n", leadin, b);
}
#ifdef SG_LIB_LINUX
transport_sense = (slen > 0);
#else
transport_sense = ((SAM_STAT_CHECK_CONDITION ==
get_scsi_pt_status_response(ptvp)) && (slen > 0));
#endif
if (transport_sense)
return sg_cmds_process_helper(leadin, mx_di_len, resid, sbp,
slen, noisy, verbose, o_sense_cat);
else
return -1;
case SCSI_PT_RESULT_OS_ERR:
if (verbose || noisy) {
get_scsi_pt_os_err_str(ptvp, sizeof(b), b);
pr2ws("%s: os: %s\n", leadin, b);
}
return -1;
default:
pr2ws("%s: unknown %s result category (%d)\n", leadin, pass_through_s,
cat);
return -1;
}
}
/* Returns 0 on success, while positive values are SG_LIB_CAT_* errors
* (e.g. SG_LIB_CAT_MALFORMED). If OS error, returns negated errno or -1. */
static int
sg_ll_inquiry_com(struct sg_pt_base * ptvp, bool cmddt, bool evpd, int pg_op,
void * resp, int mx_resp_len, int timeout_secs,
int * residp, bool noisy, int verbose)
{
int res, ret, k, sense_cat, resid;
uint8_t inq_cdb[INQUIRY_CMDLEN] = {INQUIRY_CMD, 0, 0, 0, 0, 0};
uint8_t sense_b[SENSE_BUFF_LEN];
uint8_t * up;
if (cmddt)
inq_cdb[1] |= 0x2;
if (evpd)
inq_cdb[1] |= 0x1;
inq_cdb[2] = (uint8_t)pg_op;
/* 16 bit allocation length (was 8, increased in spc3r09, 200209) */
sg_put_unaligned_be16((uint16_t)mx_resp_len, inq_cdb + 3);
if (verbose) {
pr2ws(" %s cdb: ", inquiry_s);
for (k = 0; k < INQUIRY_CMDLEN; ++k)
pr2ws("%02x ", inq_cdb[k]);
pr2ws("\n");
}
if (resp && (mx_resp_len > 0)) {
up = (uint8_t *)resp;
up[0] = 0x7f; /* defensive prefill */
if (mx_resp_len > 4)
up[4] = 0;
}
if (timeout_secs <= 0)
timeout_secs = DEF_PT_TIMEOUT;
set_scsi_pt_cdb(ptvp, inq_cdb, sizeof(inq_cdb));
set_scsi_pt_sense(ptvp, sense_b, sizeof(sense_b));
set_scsi_pt_data_in(ptvp, (uint8_t *)resp, mx_resp_len);
res = do_scsi_pt(ptvp, -1, timeout_secs, verbose);
ret = sg_cmds_process_resp(ptvp, inquiry_s, res, mx_resp_len, sense_b,
noisy, verbose, &sense_cat);
resid = get_scsi_pt_resid(ptvp);
if (residp)
*residp = resid;
if (-1 == ret)
ret = sg_convert_errno(get_scsi_pt_os_err(ptvp));
else if (-2 == ret) {
switch (sense_cat) {
case SG_LIB_CAT_RECOVERED:
case SG_LIB_CAT_NO_SENSE:
ret = 0;
break;
default:
ret = sense_cat;
break;
}
} else if (ret < 4) {
if (verbose)
pr2ws("%s: got too few bytes (%d)\n", __func__, ret);
ret = SG_LIB_CAT_MALFORMED;
} else
ret = 0;
if (resid > 0) {
if (resid > mx_resp_len) {
pr2ws("%s resid (%d) should never exceed requested "
"len=%d\n", inquiry_s, resid, mx_resp_len);
return ret ? ret : SG_LIB_CAT_MALFORMED;
}
/* zero unfilled section of response buffer, based on resid */
memset((uint8_t *)resp + (mx_resp_len - resid), 0, resid);
}
return ret;
}
