/* * Copyright (c) 2006-2018 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. */ #include #include #include #include #include #include #include #include #include #define __STDC_FORMAT_MACROS 1 #include #ifdef HAVE_CONFIG_H #include "config.h" #endif #include "sg_lib.h" #include "sg_cmds_basic.h" #include "sg_cmds_extra.h" #include "sg_unaligned.h" #include "sg_pr2serr.h" #ifdef SG_LIB_WIN32 #ifdef SG_LIB_WIN32_DIRECT #include "sg_pt.h" /* needed for scsi_pt_win32_direct() */ #endif #endif /* * This utility issues the SCSI WRITE BUFFER command to the given device. */ static const char * version_str = "1.24 20180111"; /* spc5r18 */ #define ME "sg_write_buffer: " #define DEF_XFER_LEN (8 * 1024 * 1024) #define EBUFF_SZ 256 #define WRITE_BUFFER_CMD 0x3b #define WRITE_BUFFER_CMDLEN 10 #define SENSE_BUFF_LEN 64 /* Arbitrary, could be larger */ #define DEF_PT_TIMEOUT 300 /* 300 seconds, 5 minutes */ static struct option long_options[] = { {"bpw", required_argument, 0, 'b'}, {"dry-run", no_argument, 0, 'd'}, {"dry_run", no_argument, 0, 'd'}, {"help", no_argument, 0, 'h'}, {"id", required_argument, 0, 'i'}, {"in", required_argument, 0, 'I'}, {"length", required_argument, 0, 'l'}, {"mode", required_argument, 0, 'm'}, {"offset", required_argument, 0, 'o'}, {"read-stdin", no_argument, 0, 'r'}, {"read_stdin", no_argument, 0, 'r'}, {"raw", no_argument, 0, 'r'}, {"skip", required_argument, 0, 's'}, {"specific", required_argument, 0, 'S'}, {"timeout", required_argument, 0, 't' }, {"verbose", no_argument, 0, 'v'}, {"version", no_argument, 0, 'V'}, {0, 0, 0, 0}, }; static void usage() { pr2serr("Usage: " "sg_write_buffer [--bpw=CS] [--dry-run] [--help] [--id=ID] " "[--in=FILE]\n" " [--length=LEN] [--mode=MO] " "[--offset=OFF]\n" " [--read-stdin] [--skip=SKIP] " "[--specific=MS]\n" " [--timeout=TO] [--verbose] [--version] " "DEVICE\n" " where:\n" " --bpw=CS|-b CS CS is chunk size: bytes per write " "buffer\n" " command (def: 0 -> as many as " "possible)\n" " --dry-run|-d skip WRITE BUFFER commands, do " "everything else\n" " --help|-h print out usage message then exit\n" " --id=ID|-i ID buffer identifier (0 (default) to " "255)\n" " --in=FILE|-I FILE read from FILE ('-I -' read " "from stdin)\n" " --length=LEN|-l LEN length in bytes to write; may be " "deduced from\n" " FILE\n" " --mode=MO|-m MO write buffer mode, MO is number or " "acronym\n" " (def: 0 -> 'combined header and " "data' (obs))\n" " --offset=OFF|-o OFF buffer offset (unit: bytes, def: 0)\n" " --read-stdin|-r read from stdin (same as '-I -')\n" " --skip=SKIP|-s SKIP bytes in file FILE to skip before " "reading\n" " --specific=MS|-S MS mode specific value; 3 bit field " "(0 to 7)\n" " --timeout=TO|-t TO command timeout in seconds (def: " "300)\n" " --verbose|-v increase verbosity\n" " --version|-V print version string and exit\n\n" "Performs one or more SCSI WRITE BUFFER commands. Use '-m xxx' " "to list\navailable modes. A chunk size of 4 KB ('--bpw=4k') " "seems to work well.\nExample: sg_write_buffer -b 4k -I xxx.lod " "-m 7 /dev/sg3\n" ); } #define MODE_HEADER_DATA 0 #define MODE_VENDOR 1 #define MODE_DATA 2 #define MODE_DNLD_MC 4 #define MODE_DNLD_MC_SAVE 5 #define MODE_DNLD_MC_OFFS 6 #define MODE_DNLD_MC_OFFS_SAVE 7 #define MODE_ECHO_BUFFER 0x0A #define MODE_DNLD_MC_EV_OFFS_DEFER 0x0D #define MODE_DNLD_MC_OFFS_DEFER 0x0E #define MODE_ACTIVATE_MC 0x0F #define MODE_EN_EX_ECHO 0x1A #define MODE_DIS_EX 0x1B #define MODE_DNLD_ERR_HISTORY 0x1C struct mode_s { const char *mode_string; int mode; const char *comment; }; static struct mode_s mode_arr[] = { {"hd", MODE_HEADER_DATA, "combined header and data " "(obsolete)"}, {"vendor", MODE_VENDOR, "vendor specific"}, {"data", MODE_DATA, "data"}, {"dmc", MODE_DNLD_MC, "download microcode and activate"}, {"dmc_save", MODE_DNLD_MC_SAVE, "download microcode, save and " "activate"}, {"dmc_offs", MODE_DNLD_MC_OFFS, "download microcode with offsets " "and activate"}, {"dmc_offs_save", MODE_DNLD_MC_OFFS_SAVE, "download microcode with " "offsets, save and\n\t\t\t\tactivate"}, {"echo", MODE_ECHO_BUFFER, "write data to echo buffer"}, {"dmc_offs_ev_defer", MODE_DNLD_MC_EV_OFFS_DEFER, "download " "microcode with offsets, select\n\t\t\t\tactivation event, " "save and defer activation"}, {"dmc_offs_defer", MODE_DNLD_MC_OFFS_DEFER, "download microcode " "with offsets, save and\n\t\t\t\tdefer activation"}, {"activate_mc", MODE_ACTIVATE_MC, "activate deferred microcode"}, {"en_ex", MODE_EN_EX_ECHO, "enable expander communications " "protocol and\n\t\t\t\techo buffer (obsolete)"}, {"dis_ex", MODE_DIS_EX, "disable expander communications " "protocol\n\t\t\t\t(obsolete)"}, {"deh", MODE_DNLD_ERR_HISTORY, "download application client " "error history "}, {NULL, 0, NULL}, }; 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 = mode_arr; mp->mode_string; ++mp) { pr2serr(" %2d (0x%02x) %-18s%s\n", mp->mode, mp->mode, mp->mode_string, mp->comment); } pr2serr("\nAdditionally '--bpw=,act' does a activate deferred " "microcode after\nsuccessful dmc_offs_defer and " "dmc_offs_ev_defer mode downloads.\n"); } int main(int argc, char * argv[]) { bool bpw_then_activate = false; bool dry_run = false; bool got_stdin = false; bool wb_len_given = false; int sg_fd, infd, res, c, len, k, n; int bpw = 0; int do_help = 0; int ret = 0; int verbose = 0; int wb_id = 0; int wb_len = 0; int wb_mode = 0; int wb_offset = 0; int wb_skip = 0; int wb_timeout = DEF_PT_TIMEOUT; int wb_mspec = 0; const char * device_name = NULL; const char * file_name = NULL; unsigned char * dop = NULL; char * cp; const struct mode_s * mp; char ebuff[EBUFF_SZ]; while (1) { int option_index = 0; c = getopt_long(argc, argv, "b:dhi:I:l:m:o:rs:S:t:vV", long_options, &option_index); if (c == -1) break; switch (c) { case 'b': bpw = sg_get_num(optarg); if (bpw < 0) { pr2serr("argument to '--bpw' should be in a positive " "number\n"); return SG_LIB_SYNTAX_ERROR; } if ((cp = strchr(optarg, ','))) { if (0 == strncmp("act", cp + 1, 3)) bpw_then_activate = true; } break; case 'd': dry_run = true; break; case 'h': case '?': ++do_help; break; case 'i': wb_id = sg_get_num(optarg); if ((wb_id < 0) || (wb_id > 255)) { pr2serr("argument to '--id' should be in the range 0 to " "255\n"); return SG_LIB_SYNTAX_ERROR; } break; case 'I': file_name = optarg; break; case 'l': wb_len = sg_get_num(optarg); if (wb_len < 0) { pr2serr("bad argument to '--length'\n"); return SG_LIB_SYNTAX_ERROR; } wb_len_given = true; break; case 'm': if (isdigit(*optarg)) { wb_mode = sg_get_num(optarg); if ((wb_mode < 0) || (wb_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 = mode_arr; mp->mode_string; ++mp) { if (0 == strncmp(mp->mode_string, optarg, len)) { wb_mode = mp->mode; break; } } if (! mp->mode_string) { print_modes(); return SG_LIB_SYNTAX_ERROR; } } break; case 'o': wb_offset = sg_get_num(optarg); if (wb_offset < 0) { pr2serr("bad argument to '--offset'\n"); return SG_LIB_SYNTAX_ERROR; } break; case 'r': /* --read-stdin and --raw (previous name) */ file_name = "-"; break; case 's': wb_skip = sg_get_num(optarg); if (wb_skip < 0) { pr2serr("bad argument to '--skip'\n"); return SG_LIB_SYNTAX_ERROR; } break; case 'S': wb_mspec = sg_get_num(optarg); if ((wb_mspec < 0) || (wb_mspec > 7)) { pr2serr("expected argument to '--specific' to be 0 to 7\n"); return SG_LIB_SYNTAX_ERROR; } break; case 't': wb_timeout = sg_get_num(optarg); if (wb_timeout < 0) { pr2serr("Invalid argument to '--timeout'\n"); return SG_LIB_SYNTAX_ERROR; } break; case 'v': ++verbose; break; case 'V': pr2serr(ME "version: %s\n", version_str); return 0; default: pr2serr("unrecognised option code 0x%x ??\n", c); usage(); return SG_LIB_SYNTAX_ERROR; } } if (do_help) { if (do_help > 1) { usage(); pr2serr("\n"); print_modes(); } else usage(); return 0; } if (optind < argc) { if (NULL == device_name) { 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; } } if (NULL == device_name) { pr2serr("missing device name!\n"); usage(); return SG_LIB_SYNTAX_ERROR; } if ((wb_len > 0) && (bpw > wb_len)) { pr2serr("trim chunk size (CS) to be the same as LEN\n"); bpw = wb_len; } #ifdef SG_LIB_WIN32 #ifdef SG_LIB_WIN32_DIRECT if (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 sg_fd = sg_cmds_open_device(device_name, false /* rw */, verbose); if (sg_fd < 0) { pr2serr(ME "open error: %s: %s\n", device_name, safe_strerror(-sg_fd)); return SG_LIB_FILE_ERROR; } if (file_name || (wb_len > 0)) { if (0 == wb_len) wb_len = DEF_XFER_LEN; if (NULL == (dop = (unsigned char *)malloc(wb_len))) { pr2serr(ME "out of memory\n"); ret = SG_LIB_SYNTAX_ERROR; goto err_out; } memset(dop, 0xff, wb_len); if (file_name) { got_stdin = (0 == strcmp(file_name, "-")); if (got_stdin) { if (wb_skip > 0) { pr2serr("Can't skip on stdin\n"); ret = SG_LIB_FILE_ERROR; goto err_out; } infd = STDIN_FILENO; } else { if ((infd = open(file_name, O_RDONLY)) < 0) { snprintf(ebuff, EBUFF_SZ, ME "could not open %s for reading", file_name); perror(ebuff); ret = SG_LIB_FILE_ERROR; goto err_out; } else if (sg_set_binary_mode(infd) < 0) perror("sg_set_binary_mode"); if (wb_skip > 0) { if (lseek(infd, wb_skip, SEEK_SET) < 0) { snprintf(ebuff, EBUFF_SZ, ME "couldn't skip to " "required position on %s", file_name); perror(ebuff); close(infd); ret = SG_LIB_FILE_ERROR; goto err_out; } } } res = read(infd, dop, wb_len); if (res < 0) { snprintf(ebuff, EBUFF_SZ, ME "couldn't read from %s", file_name); perror(ebuff); if (! got_stdin) close(infd); ret = SG_LIB_FILE_ERROR; goto err_out; } if (res < wb_len) { if (wb_len_given) { pr2serr("tried to read %d bytes from %s, got %d bytes\n", wb_len, file_name, res); pr2serr("pad with 0xff bytes and continue\n"); } else { if (verbose) { pr2serr("tried to read %d bytes from %s, got %d " "bytes\n", wb_len, file_name, res); pr2serr("will write %d bytes", res); if ((bpw > 0) && (bpw < wb_len)) pr2serr(", %d bytes per WRITE BUFFER command\n", bpw); else pr2serr("\n"); } wb_len = res; } } if (! got_stdin) close(infd); } } res = 0; if (bpw > 0) { for (k = 0; k < wb_len; k += n) { n = wb_len - k; if (n > bpw) n = bpw; if (verbose) pr2serr("sending write buffer, mode=0x%x, mspec=%d, id=%d, " " offset=%d, len=%d\n", wb_mode, wb_mspec, wb_id, wb_offset + k, n); if (dry_run) { if (verbose) pr2serr("skipping WRITE BUFFER command due to " "--dry-run\n"); res = 0; } else res = sg_ll_write_buffer_v2(sg_fd, wb_mode, wb_mspec, wb_id, wb_offset + k, dop + k, n, wb_timeout, true, verbose); if (res) break; } if (bpw_then_activate) { if (verbose) pr2serr("sending Activate deferred microcode [0xf]\n"); if (dry_run) { if (verbose) pr2serr("skipping WRITE BUFFER(ACTIVATE) command due to " "--dry-run\n"); res = 0; } else res = sg_ll_write_buffer_v2(sg_fd, MODE_ACTIVATE_MC, 0 /* buffer_id */, 0 /* buffer_offset */, 0, NULL, 0, wb_timeout, true, verbose); } } else { if (verbose) pr2serr("sending single write buffer, mode=0x%x, mpsec=%d, " "id=%d, offset=%d, len=%d\n", wb_mode, wb_mspec, wb_id, wb_offset, wb_len); if (dry_run) { if (verbose) pr2serr("skipping WRITE BUFFER(all in one) command due to " "--dry-run\n"); res = 0; } else res = sg_ll_write_buffer_v2(sg_fd, wb_mode, wb_mspec, wb_id, wb_offset, dop, wb_len, wb_timeout, true, verbose); } if (0 != res) { char b[80]; ret = res; sg_get_category_sense_str(res, sizeof(b), b, verbose); pr2serr("Write buffer failed: %s\n", b); } err_out: if (dop) free(dop); res = sg_cmds_close_device(sg_fd); if (res < 0) { pr2serr("close error: %s\n", safe_strerror(-res)); if (0 == ret) return SG_LIB_FILE_ERROR; } return (ret >= 0) ? ret : SG_LIB_CAT_OTHER; }