/* * Copyright (c) 2006-2022 Luben Tuikov and Douglas Gilbert. * All rights reserved. * Use of this source code is governed by a BSD-style * license that can be found in the BSD_LICENSE file. * * SPDX-License-Identifier: BSD-2-Clause */ #include #include #include #include #include #include #include #include #include #include #define __STDC_FORMAT_MACROS 1 #include #include #include #ifdef HAVE_CONFIG_H #include "config.h" #endif #include "sg_lib.h" #include "sg_lib_data.h" #include "sg_cmds_basic.h" #include "sg_cmds_extra.h" #include "sg_pt.h" #include "sg_unaligned.h" #include "sg_pr2serr.h" /* * This utility issues the SCSI READ BUFFER(10 or 16) command to the given * device. */ static const char * version_str = "1.35 20220217"; /* spc6r06 */ #ifndef SG_READ_BUFFER_10_CMD #define SG_READ_BUFFER_10_CMD 0x3c #define SG_READ_BUFFER_10_CMDLEN 10 #endif #ifndef SG_READ_BUFFER_16_CMD #define SG_READ_BUFFER_16_CMD 0x9b #define SG_READ_BUFFER_16_CMDLEN 16 #endif #define MODE_HEADER_DATA 0 #define MODE_VENDOR 1 #define MODE_DATA 2 #define MODE_DESCRIPTOR 3 #define MODE_ECHO_BUFFER 0x0A #define MODE_ECHO_BDESC 0x0B #define MODE_READ_MICROCODE_ST 0x0F #define MODE_EN_EX_ECHO 0x1A #define MODE_ERR_HISTORY 0x1C #define MAX_DEF_INHEX_LEN 8192 #define SENSE_BUFF_LEN 64 /* Arbitrary, could be larger */ #define DEF_PT_TIMEOUT 60 /* 60 seconds */ #define DEF_RESPONSE_LEN 4 /* increased to 64 for MODE_ERR_HISTORY */ static struct option long_options[] = { {"16", no_argument, 0, 'L'}, {"eh_code", required_argument, 0, 'e'}, {"eh-code", required_argument, 0, 'e'}, {"help", no_argument, 0, 'h'}, {"hex", no_argument, 0, 'H'}, {"id", required_argument, 0, 'i'}, {"inhex", required_argument, 0, 'I'}, {"length", required_argument, 0, 'l'}, {"long", no_argument, 0, 'L'}, {"mode", required_argument, 0, 'm'}, {"no_output", no_argument, 0, 'N'}, {"no-output", no_argument, 0, 'N'}, {"offset", required_argument, 0, 'o'}, {"raw", no_argument, 0, 'r'}, {"readonly", no_argument, 0, 'R'}, {"specific", required_argument, 0, 'S'}, {"verbose", no_argument, 0, 'v'}, {"version", no_argument, 0, 'V'}, {0, 0, 0, 0}, /* sentinel */ }; struct opts_t { bool do_long; bool o_readonly; bool do_raw; bool eh_code_given; bool no_output; bool rb_id_given; bool rb_len_given; bool rb_mode_given; bool verbose_given; bool version_given; int sg_fd; int do_help; int do_hex; int eh_code; int rb_id; int rb_len; int rb_mode; int rb_mode_sp; int verbose; uint64_t rb_offset; const char * device_name; const char * inhex_name; }; static void usage() { pr2serr("Usage: sg_read_buffer [--16] [--eh_code=EHC] [--help] [--hex] " "[--id=ID]\n" " [--inhex=FN] [--length=LEN] [--long] " "[--mode=MO]\n" " [--no_output] [--offset=OFF] [--raw] " "[--readonly]\n" " [--specific=MS] [--verbose] [--version] " "DEVICE\n" " where:\n" " --16|-L issue READ BUFFER(16) (def: 10)\n" " --eh_code=EHC|-e EHC same as '-m eh -i EHC' where " "EHC is the\n" " error history code\n" " --help|-h print out usage message\n" " --hex|-H print output in hex\n" " --id=ID|-i ID buffer identifier (0 (default) to 255)\n" " --inhex=FN|-I FN filename FN contains hex data to " "decode\n" " rather than DEVICE. If --raw given " "then binary\n" " --length=LEN|-l LEN length in bytes to read (def: 4, " "64 for eh)\n" " --long|-L issue READ BUFFER(16) (def: 10)\n" " --mode=MO|-m MO read buffer mode, MO is number or " "acronym (def: 0)\n" " --no_output|-N perform the command then exit\n" " --offset=OFF|-o OFF buffer offset (unit: bytes, def: 0)\n" " --raw|-r output response in binary to stdout\n" " --readonly|-R open DEVICE read-only (def: read-write)\n" " --specific=MS|-S MS mode specific value; 3 bit field (0 " "to 7)\n" " --verbose|-v increase verbosity\n" " --version|-V print version string and exit\n\n" "Performs a SCSI READ BUFFER (10 or 16) command. Use '-m xxx' to " "list\navailable modes. Some responses are decoded, others are " "output in hex.\n" ); } static struct mode_s { const char *mode_string; int mode; const char *comment; } modes[] = { { "hd", MODE_HEADER_DATA, "combined header and data"}, { "vendor", MODE_VENDOR, "vendor specific"}, { "data", MODE_DATA, "data"}, { "desc", MODE_DESCRIPTOR, "descriptor"}, { "echo", MODE_ECHO_BUFFER, "read data from echo buffer " "(spc-2)"}, { "echo_desc", MODE_ECHO_BDESC, "echo buffer descriptor (spc-2)"}, { "rd_microc_st", MODE_READ_MICROCODE_ST, "read microcode status " "(spc-5)"}, { "en_ex", MODE_EN_EX_ECHO, "enable expander communications protocol and echo buffer (spc-3)"}, { "err_hist|eh", MODE_ERR_HISTORY, "error history (spc-4)"}, { NULL, 999, NULL}, /* end sentinel */ }; static void print_modes(void) { const struct mode_s *mp; pr2serr("The modes parameter argument can be numeric (hex or decimal)\n" "or symbolic:\n"); for (mp = modes; mp->mode_string; ++mp) { pr2serr(" %2d (0x%02x) %-16s%s\n", mp->mode, mp->mode, mp->mode_string, mp->comment); } } /* Invokes a SCSI READ BUFFER(10) command (spc5r02). Return of 0 -> success, * various SG_LIB_CAT_* positive values or -1 -> other errors */ static int sg_ll_read_buffer_10(void * resp, int * residp, bool noisy, const struct opts_t * op) { int ret, res, sense_cat; uint8_t rb10_cb[SG_READ_BUFFER_10_CMDLEN] = {SG_READ_BUFFER_10_CMD, 0, 0, 0, 0, 0, 0, 0, 0, 0}; uint8_t sense_b[SENSE_BUFF_LEN] SG_C_CPP_ZERO_INIT; struct sg_pt_base * ptvp; rb10_cb[1] = (uint8_t)(op->rb_mode & 0x1f); if (op->rb_mode_sp) rb10_cb[1] |= (uint8_t)((op->rb_mode_sp & 0x7) << 5); rb10_cb[2] = (uint8_t)op->rb_id; sg_put_unaligned_be24(op->rb_offset, rb10_cb + 3); sg_put_unaligned_be24(op->rb_len, rb10_cb + 6); if (op->verbose) { char b[128]; pr2serr(" Read buffer(10) cdb: %s\n", sg_get_command_str(rb10_cb, SG_READ_BUFFER_10_CMDLEN, false, sizeof(b), b)); } ptvp = construct_scsi_pt_obj(); if (NULL == ptvp) { pr2serr("Read buffer(10): out of memory\n"); return -1; } set_scsi_pt_cdb(ptvp, rb10_cb, sizeof(rb10_cb)); set_scsi_pt_sense(ptvp, sense_b, sizeof(sense_b)); set_scsi_pt_data_in(ptvp, (uint8_t *)resp, op->rb_len); res = do_scsi_pt(ptvp, op->sg_fd, DEF_PT_TIMEOUT, op->verbose); ret = sg_cmds_process_resp(ptvp, "Read buffer(10)", res, noisy, op->verbose, &sense_cat); if (-1 == ret) { if (get_scsi_pt_transport_err(ptvp)) ret = SG_LIB_TRANSPORT_ERROR; else 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 ((op->verbose > 2) && (ret > 0)) { pr2serr(" Read buffer(10): response%s\n", (ret > 256 ? ", first 256 bytes" : "")); hex2stderr((const uint8_t *)resp, (ret > 256 ? 256 : ret), -1); } ret = 0; } if (residp) *residp = get_scsi_pt_resid(ptvp); destruct_scsi_pt_obj(ptvp); return ret; } /* Invokes a SCSI READ BUFFER(16) command (spc5r02). Return of 0 -> success, * various SG_LIB_CAT_* positive values or -1 -> other errors */ static int sg_ll_read_buffer_16(void * resp, int * residp, bool noisy, const struct opts_t * op) { int ret, res, sense_cat; uint8_t rb16_cb[SG_READ_BUFFER_16_CMDLEN] = {SG_READ_BUFFER_16_CMD, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}; uint8_t sense_b[SENSE_BUFF_LEN] SG_C_CPP_ZERO_INIT; struct sg_pt_base * ptvp; rb16_cb[1] = (uint8_t)(op->rb_mode & 0x1f); if (op->rb_mode_sp) rb16_cb[1] |= (uint8_t)((op->rb_mode_sp & 0x7) << 5); sg_put_unaligned_be64(op->rb_offset, rb16_cb + 2); sg_put_unaligned_be32(op->rb_len, rb16_cb + 10); rb16_cb[14] = (uint8_t)op->rb_id; if (op->verbose) { char b[128]; pr2serr(" Read buffer(16) cdb: %s\n", sg_get_command_str(rb16_cb, SG_READ_BUFFER_16_CMDLEN, false, sizeof(b), b)); } ptvp = construct_scsi_pt_obj(); if (NULL == ptvp) { pr2serr("%s: out of memory\n", __func__); return -1; } set_scsi_pt_cdb(ptvp, rb16_cb, sizeof(rb16_cb)); set_scsi_pt_sense(ptvp, sense_b, sizeof(sense_b)); set_scsi_pt_data_in(ptvp, (uint8_t *)resp, op->rb_len); res = do_scsi_pt(ptvp, op->sg_fd, DEF_PT_TIMEOUT, op->verbose); ret = sg_cmds_process_resp(ptvp, "Read buffer(16)", res, noisy, op->verbose, &sense_cat); if (-1 == ret) { if (get_scsi_pt_transport_err(ptvp)) ret = SG_LIB_TRANSPORT_ERROR; else 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 ((op->verbose > 2) && (ret > 0)) { pr2serr(" Read buffer(16): response%s\n", (ret > 256 ? ", first 256 bytes" : "")); hex2stderr((const uint8_t *)resp, (ret > 256 ? 256 : ret), -1); } ret = 0; } if (residp) *residp = get_scsi_pt_resid(ptvp); destruct_scsi_pt_obj(ptvp); return ret; } /* Microcode status: active, redundant and download */ static const char * act_micro_st_arr[] = { "Microcode status not reported", "Activated microcode is valid", "Activated microcode is not valid", "Activated microcode is not a full microcode image", }; static const char * red_micro_st_arr[] = { "Redundant microcode status is not reported", "At least one redundant microcode copy is valid", "No redundant microcode copy is valid", "Redundant microcode is not a full microcode image", }; /* Major overlap between this SPC-4 table and SES-4r2 table 63 */ struct sg_lib_simple_value_name_t down_micro_st_arr[] = { {0x0, "No download microcode operation in progress"}, {0x1, "Download in progress, awaiting more"}, /* SES */ {0x2, "Download complete, updating storage"}, /* SES */ {0x3, "Updating storage with deferred microcode"}, /* SES */ {0x10, "Complete, no error, starting now"}, /* SES */ {0x11, "Complete, no error, start after hard reset or power " "cycle"}, /* SES */ {0x12, "Complete, no error, start after power cycle"}, /* SES */ {0x13, "Complete, no error, start after activate_mc, hard reset or " "power cycle"}, /* SES */ {0x21, "Download in progress, awaiting more"}, /* SPC-6 */ {0x22, "Download complete, updating storage"}, /* SPC-6 */ {0x23, "Updating storage with deferred microcode"}, /* SPC-6 */ {0x30, "Deferred microcode download complete, no reports"}, /* SPC-6 */ {0x31, "Deferred download ok, await hard reset or power cycle"}, {0x32, "Deferred download ok, await power cycle"}, /* SPC-6 */ {0x33, "Deferred download ok, await any event"}, /* SPC-6 */ {0x34, "Deferred download ok, await Write buffer command"}, /* SPC-6 */ {0x35, "Deferred download ok, await any event, WB only this LU"}, {0x80, "Error, discarded, see additional status"}, /* SES */ {0x81, "Error, discarded, image error"}, /* SES */ {0x82, "Timeout, discarded"}, /* SES */ {0x83, "Internal error, need new microcode before reset"}, /* SES */ {0x84, "Internal error, need new microcode, reset safe"}, /* SES */ {0x85, "Unexpected activate_mc received"}, /* SES */ {0x90, "Error, discarded, see additional status"}, /* SPC-6 */ {0x91, "Error, discarded, image error"}, /* SPC-6 */ {0x92, "Timeout, discarded"}, /* SPC-6 */ {0x93, "Internal error, need new microcode before reset"}, /* SPC-6 */ {0x94, "Internal error, need new microcode, reset safe"}, /* SPC-6 */ {0x95, "Unexpected activate_mc received, mcrocode discard"}, /* SPC-6 */ {0x1000, NULL}, /* End sentinel */ }; static void decode_microcode_status(const uint8_t * resp, const struct opts_t * op) { int n; uint32_t u; const char * cp; const struct sg_lib_simple_value_name_t * vnp; char b[32]; if ((NULL == resp) || (op->rb_len < 1)) return; n = resp[0]; if (n < (int)SG_ARRAY_SIZE(act_micro_st_arr)) cp = act_micro_st_arr[n]; else { snprintf(b, sizeof(b), "unknown [0x%x]", n); cp = b; } printf("Activated microcode status: %s\n", cp); if (op->rb_len < 2) return; n = resp[1]; if (n < (int)SG_ARRAY_SIZE(red_micro_st_arr)) cp = red_micro_st_arr[n]; else { snprintf(b, sizeof(b), "unknown [0x%x]", n); cp = b; } printf("Redundant microcode status: %s\n", cp); if (op->rb_len < 3) return; n = resp[2]; for (vnp = down_micro_st_arr, cp = NULL; vnp->name; ++vnp) { if (vnp->value == n) { cp = vnp->name; break; } } if (NULL == cp) { snprintf(b, sizeof(b), "unknown [0x%x]", n); cp = b; } printf("Download microcode status: %s\n", cp); if (op->rb_len > 7) { u = sg_get_unaligned_be32(resp + 4); printf("Download microcode maximum size (bytes): %u [0x%x]\n", u, u); } if (op->rb_len > 15) { u = sg_get_unaligned_be32(resp + 12); printf("Download microcode expected buffer offset (bytes): %u " "[0x%x]\n", u, u); } } static void decode_error_history(const uint8_t * resp, const struct opts_t * op) { static const char * eh_s = "Error history"; int k, num; uint32_t dir_len; const uint8_t * up; if (op->rb_id < 0x4) { /* eh directory variants */ if (op->rb_len < 8) { pr2serr("%s response buffer too short [%d] to show directory " "header\n", eh_s, op->rb_len); return; } printf("%s directory header:\n", eh_s); printf(" T10 Vendor: %.8s\n", resp + 0); printf(" Version: %u\n", resp[8]); printf(" EHS_retrieved: %u\n", 0x3 & (resp[9] >> 3)); printf(" EHS_source: %u\n", 0x3 & (resp[9] >> 1)); printf(" CLR_SUP: %u\n", 0x1 & resp[9]); if (op->rb_len < 32) { pr2serr("%s response buffer too short [%d] to show directory " "length\n", eh_s, op->rb_len); return; } dir_len = sg_get_unaligned_be16(resp + 30); printf(" Directory length: %u\n", dir_len); if ((unsigned)op->rb_len < (32 + dir_len)) { pr2serr("%s directory entries truncated, try adding '-l %u' " "option\n", eh_s, 32 + dir_len); } num = (op->rb_len - 32) / 8; for (k = 0, up = resp + 32; k < num; ++k, up += 8) { if (k > 0) printf("\n"); printf(" Supported buffer ID: 0x%x\n", up[0]); printf(" Buffer format: 0x%x\n", up[1]); printf(" Buffer source: 0x%x\n", 0xf & up[2]); printf(" Maximum available length: 0x%x\n", sg_get_unaligned_be32(up + 4)); } } else if ((op->rb_id >= 0x10) && (op->rb_id <= 0xef)) hex2stdout(resp, op->rb_len, (op->verbose > 1 ? 0 : 1)); else if (0xfe == op->rb_id) pr2serr("clear %s I_T nexus [0x%x]\n", eh_s, op->rb_id); else if (0xff == op->rb_id) pr2serr("clear %s I_T nexus and release any snapshots [0x%x]\n", eh_s, op->rb_id); else pr2serr("Reserved Buffer ID value [0x%x] for %s\n", op->rb_id, eh_s); } static void dStrRaw(const uint8_t * str, int len) { int k; for (k = 0; k < len; ++k) printf("%c", str[k]); } int main(int argc, char * argv[]) { int res, c, len, k; int inhex_len = 0; int resid = 0; int ret = 0; int64_t ll; const char * cp = NULL; uint8_t * resp = NULL; uint8_t * free_resp = NULL; const struct mode_s * mp; struct opts_t opts SG_C_CPP_ZERO_INIT; struct opts_t * op = &opts; op->sg_fd = -1; op->rb_len = DEF_RESPONSE_LEN; while (1) { int option_index = 0; c = getopt_long(argc, argv, "e:hHi:I:l:Lm:No:rRS:vV", long_options, &option_index); if (c == -1) break; switch (c) { case 'e': if (op->rb_mode_given && (MODE_ERR_HISTORY != op->rb_mode)) { pr2serr("mode incompatible with --eh_code= option\n"); return SG_LIB_CONTRADICT; } op->eh_code = sg_get_num(optarg); if ((op->eh_code < 0) || (op->eh_code > 255)) { pr2serr("argument to '--eh_code=' should be in the range 0 " "to 255\n"); return SG_LIB_SYNTAX_ERROR; } op->rb_mode = MODE_ERR_HISTORY; op->eh_code_given = true; break; case 'h': case '?': ++op->do_help; break; case 'H': ++op->do_hex; break; case 'i': op->rb_id = sg_get_num(optarg); if ((op->rb_id < 0) || (op->rb_id > 255)) { pr2serr("argument to '--id=' should be in the range 0 to " "255\n"); return SG_LIB_SYNTAX_ERROR; } op->rb_id_given = true; break; case 'I': if (op->inhex_name) { pr2serr("--inhex= option given more than once. Once only " "please\n"); return SG_LIB_SYNTAX_ERROR; } else op->inhex_name = optarg; break; case 'l': op->rb_len = sg_get_num(optarg); if (op->rb_len < 0) { pr2serr("bad argument to '--length'\n"); return SG_LIB_SYNTAX_ERROR; } if (op->rb_len > 0xffffff) { pr2serr("argument to '--length' must be <= 0xffffff\n"); return SG_LIB_SYNTAX_ERROR; } op->rb_len_given = true; break; case 'L': op->do_long = true; break; case 'm': if (NULL == optarg) { pr2serr("bad argument to '--mode'\n"); return SG_LIB_SYNTAX_ERROR; } else if (isdigit((uint8_t)*optarg)) { op->rb_mode = sg_get_num(optarg); if ((op->rb_mode < 0) || (op->rb_mode > 31)) { pr2serr("argument to '--mode' should be in the range 0 " "to 31\n"); return SG_LIB_SYNTAX_ERROR; } } else { len = strlen(optarg); for (mp = modes; mp->mode_string; ++mp) { cp = strchr(mp->mode_string, '|'); if (NULL == cp) { if (0 == strncmp(mp->mode_string, optarg, len)) { op->rb_mode = mp->mode; break; } } else { int f_len = cp - mp->mode_string; if ((f_len == len) && (0 == memcmp(mp->mode_string, optarg, len))) { op->rb_mode = mp->mode; break; } if (0 == strncmp(cp + 1, optarg, len)) { op->rb_mode = mp->mode; break; } } } if (NULL == mp->mode_string) { print_modes(); return SG_LIB_SYNTAX_ERROR; } } if (op->eh_code_given && (MODE_ERR_HISTORY != op->rb_mode)) { pr2serr("mode incompatible with --eh_code= option\n"); return SG_LIB_CONTRADICT; } op->rb_mode_given = true; break; case 'N': op->no_output = true; break; case 'o': ll = sg_get_llnum(optarg); if (ll < 0) { pr2serr("bad argument to '--offset'\n"); return SG_LIB_SYNTAX_ERROR; } op->rb_offset = ll; break; case 'r': op->do_raw = true; break; case 'R': op->o_readonly = true; break; case 'S': op->rb_mode_sp = sg_get_num(optarg); if ((op->rb_mode_sp < 0) || (op->rb_mode_sp > 7)) { pr2serr("expected argument to '--specific' to be 0 to 7\n"); return SG_LIB_SYNTAX_ERROR; } break; case 'v': op->verbose_given = true; ++op->verbose; break; case 'V': op->version_given = true; break; default: pr2serr("unrecognised option code 0x%x ??\n", c); usage(); return SG_LIB_SYNTAX_ERROR; } } if (op->do_help) { if (op->do_help > 1) { usage(); pr2serr("\n"); print_modes(); } else usage(); return 0; } if (optind < argc) { if (NULL == op->device_name) { op->device_name = argv[optind]; ++optind; } if (optind < argc) { for (; optind < argc; ++optind) pr2serr("Unexpected extra argument: %s\n", argv[optind]); usage(); return SG_LIB_SYNTAX_ERROR; } } #ifdef DEBUG pr2serr("In DEBUG mode, "); if (op->verbose_given && op->version_given) { pr2serr("but override: '-vV' given, zero verbose and continue\n"); op->verbose_given = false; op->version_given = false; op->verbose = 0; } else if (! op->verbose_given) { pr2serr("set '-vv'\n"); op->verbose = 2; } else pr2serr("keep verbose=%d\n", op->verbose); #else if (op->verbose_given && op->version_given) pr2serr("Not in DEBUG mode, so '-vV' has no special action\n"); #endif if (op->version_given) { pr2serr("version: %s\n", version_str); return 0; } if ((MODE_ERR_HISTORY == op->rb_mode) && (NULL == op->inhex_name)) { if (! op->rb_len_given) op->rb_len = 64; } if (op->eh_code_given) { if (op->rb_id_given && (op->eh_code != op->rb_id)) { pr2serr("Buffer ID incompatible with --eh_code= option\n"); return SG_LIB_CONTRADICT; } op->rb_id = op->eh_code; } if (op->device_name && op->inhex_name) { pr2serr("Confused: both DEVICE (%s) and --inhex= option given. One " "only please\n", op->device_name); return SG_LIB_SYNTAX_ERROR; } else if (op->inhex_name) { op->rb_len = (op->rb_len > MAX_DEF_INHEX_LEN) ? op->rb_len : MAX_DEF_INHEX_LEN; resp = (uint8_t *)sg_memalign(op->rb_len, 0, &free_resp, false); ret = sg_f2hex_arr(op->inhex_name, op->do_raw, false, resp, &inhex_len, op->rb_len); if (ret) goto fini; if (op->do_raw) op->do_raw = false; /* only used for input in this case */ op->rb_len = inhex_len; resid = 0; goto decode_result; } else if (NULL == op->device_name) { pr2serr("Missing device name!\n\n"); usage(); return SG_LIB_SYNTAX_ERROR; } len = op->rb_len ? op->rb_len : 8; resp = (uint8_t *)sg_memalign(len, 0, &free_resp, false); if (NULL == resp) { pr2serr("unable to allocate %d bytes on the heap\n", len); return SG_LIB_CAT_OTHER; } if (op->do_raw) { if (sg_set_binary_mode(STDOUT_FILENO) < 0) { perror("sg_set_binary_mode"); ret = SG_LIB_FILE_ERROR; goto fini; } } #ifdef SG_LIB_WIN32 #ifdef SG_LIB_WIN32_DIRECT if (op->verbose > 4) pr2serr("Initial win32 SPT interface state: %s\n", scsi_pt_win32_spt_state() ? "direct" : "indirect"); scsi_pt_win32_direct(SG_LIB_WIN32_DIRECT /* SPT pt interface */); #endif #endif op->sg_fd = sg_cmds_open_device(op->device_name, op->o_readonly, op->verbose); if (op->sg_fd < 0) { if (op->verbose) pr2serr("open error: %s: %s\n", op->device_name, safe_strerror(-op->sg_fd)); ret = sg_convert_errno(-op->sg_fd); goto fini; } if (op->do_long) res = sg_ll_read_buffer_16(resp, &resid, true, op); else if (op->rb_offset > 0xffffff) { pr2serr("--offset value is too large for READ BUFFER(10), try " "--16\n"); ret = SG_LIB_SYNTAX_ERROR; goto fini; } else res = sg_ll_read_buffer_10(resp, &resid, true, op); if (0 != res) { char b[80]; ret = res; if (res > 0) { sg_get_category_sense_str(res, sizeof(b), b, op->verbose); pr2serr("Read buffer(%d) failed: %s\n", (op->do_long ? 16 : 10), b); } goto fini; } if (resid > 0) op->rb_len -= resid; /* got back less than requested */ if (op->no_output) goto fini; decode_result: if (op->rb_len > 0) { if (op->do_raw) dStrRaw(resp, op->rb_len); else if (op->do_hex || (op->rb_len < 4)) { k = (op->do_hex > 2) ? -1 : (2 - op->do_hex); hex2stdout(resp, op->rb_len, k); } else { switch (op->rb_mode) { case MODE_DESCRIPTOR: k = sg_get_unaligned_be24(resp + 1); printf("OFFSET BOUNDARY: %d, Buffer offset alignment: " "%d-byte\n", resp[0], (1 << resp[0])); printf("BUFFER CAPACITY: %d (0x%x)\n", k, k); break; case MODE_ECHO_BDESC: k = sg_get_unaligned_be16(resp + 2) & 0x1fff; printf("EBOS:%d\n", resp[0] & 1 ? 1 : 0); printf("Echo buffer capacity: %d (0x%x)\n", k, k); break; case MODE_READ_MICROCODE_ST: decode_microcode_status(resp, op); break; case MODE_ERR_HISTORY: decode_error_history(resp, op); break; default: hex2stdout(resp, op->rb_len, (op->verbose > 1 ? 0 : 1)); break; } } } fini: if (free_resp) free(free_resp); if (op->sg_fd >= 0) { res = sg_cmds_close_device(op->sg_fd); if (res < 0) { pr2serr("close error: %s\n", safe_strerror(-res)); if (0 == ret) ret = sg_convert_errno(-res); } } if (0 == op->verbose) { if (! sg_if_can2stderr("sg_read_buffer failed: ", ret)) pr2serr("Some error occurred, try again with '-v' " "or '-vv' for more information\n"); } return (ret >= 0) ? ret : SG_LIB_CAT_OTHER; }