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-rw-r--r--src/sg_write_long.c331
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diff --git a/src/sg_write_long.c b/src/sg_write_long.c
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+/* A utility program for the Linux OS SCSI subsystem.
+ * Copyright (C) 2004-2018 D. Gilbert
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ *
+ * This program issues the SCSI command WRITE LONG to a given SCSI device.
+ * It sends the command with the logical block address passed as the lba
+ * argument, and the transfer length set to the xfer_len argument. the
+ * buffer to be written to the device filled with 0xff, this buffer includes
+ * the sector data and the ECC bytes.
+ *
+ * This code was contributed by Saeed Bishara
+ */
+
+#include <unistd.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdarg.h>
+#include <stdbool.h>
+#include <string.h>
+#include <errno.h>
+#include <getopt.h>
+#define __STDC_FORMAT_MACROS 1
+#include <inttypes.h>
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include "sg_lib.h"
+#include "sg_cmds_basic.h"
+#include "sg_cmds_extra.h"
+#include "sg_pr2serr.h"
+
+static const char * version_str = "1.21 20180723";
+
+
+#define MAX_XFER_LEN (15 * 1024)
+
+#define ME "sg_write_long: "
+
+#define EBUFF_SZ 512
+
+static struct option long_options[] = {
+ {"16", no_argument, 0, 'S'},
+ {"cor_dis", no_argument, 0, 'c'},
+ {"cor-dis", no_argument, 0, 'c'},
+ {"help", no_argument, 0, 'h'},
+ {"in", required_argument, 0, 'i'},
+ {"lba", required_argument, 0, 'l'},
+ {"pblock", no_argument, 0, 'p'},
+ {"verbose", no_argument, 0, 'v'},
+ {"version", no_argument, 0, 'V'},
+ {"wr_uncor", no_argument, 0, 'w'},
+ {"wr-uncor", no_argument, 0, 'w'},
+ {"xfer_len", required_argument, 0, 'x'},
+ {"xfer-len", required_argument, 0, 'x'},
+ {0, 0, 0, 0},
+};
+
+
+
+static void
+usage()
+{
+ pr2serr("Usage: sg_write_long [--16] [--cor_dis] [--help] [--in=IF] "
+ "[--lba=LBA]\n"
+ " [--pblock] [--verbose] [--version] "
+ "[--wr_uncor]\n"
+ " [--xfer_len=BTL] DEVICE\n"
+ " where:\n"
+ " --16|-S do WRITE LONG(16) (default: 10)\n"
+ " --cor_dis|-c set correction disabled bit\n"
+ " --help|-h print out usage message\n"
+ " --in=IF|-i IF input from file called IF (default: "
+ "use\n"
+ " 0xff bytes as fill)\n"
+ " --lba=LBA|-l LBA logical block address "
+ "(default: 0)\n"
+ " --pblock|-p physical block (default: logical "
+ "block)\n"
+ " --verbose|-v increase verbosity\n"
+ " --version|-V print version string then exit\n"
+ " --wr_uncor|-w set an uncorrectable error (no "
+ "data transferred)\n"
+ " --xfer_len=BTL|-x BTL byte transfer length (< 10000) "
+ "(default:\n"
+ " 520 bytes)\n\n"
+ "Performs a SCSI WRITE LONG (10 or 16) command. Writes a single "
+ "block\nincluding associated ECC data. That data may be obtained "
+ "from the\nSCSI READ LONG command. See the sg_read_long utility.\n"
+ );
+}
+
+int
+main(int argc, char * argv[])
+{
+ bool do_16 = false;
+ bool cor_dis = false;
+ bool got_stdin;
+ bool pblock = false;
+ bool verbose_given = false;
+ bool version_given = false;
+ bool wr_uncor = false;
+ int res, c, infd, offset;
+ int sg_fd = -1;
+ int xfer_len = 520;
+ int ret = 1;
+ int verbose = 0;
+ int64_t ll;
+ uint64_t llba = 0;
+ const char * device_name = NULL;
+ uint8_t * writeLongBuff = NULL;
+ void * rawp = NULL;
+ uint8_t * free_rawp = NULL;
+ const char * ten_or;
+ char file_name[256];
+ char b[80];
+ char ebuff[EBUFF_SZ];
+
+ memset(file_name, 0, sizeof file_name);
+ while (1) {
+ int option_index = 0;
+
+ c = getopt_long(argc, argv, "chi:l:pSvVwx:", long_options,
+ &option_index);
+ if (c == -1)
+ break;
+
+ switch (c) {
+ case 'c':
+ cor_dis = true;
+ break;
+ case 'h':
+ case '?':
+ usage();
+ return 0;
+ case 'i':
+ strncpy(file_name, optarg, sizeof(file_name) - 1);
+ file_name[sizeof(file_name) - 1] = '\0';
+ break;
+ case 'l':
+ ll = sg_get_llnum(optarg);
+ if (-1 == ll) {
+ pr2serr("bad argument to '--lba'\n");
+ return SG_LIB_SYNTAX_ERROR;
+ }
+ llba = (uint64_t)ll;
+ break;
+ case 'p':
+ pblock = true;
+ break;
+ case 'S':
+ do_16 = true;
+ break;
+ case 'v':
+ verbose_given = true;
+ ++verbose;
+ break;
+ case 'V':
+ version_given = true;
+ break;
+ case 'w':
+ wr_uncor = true;
+ break;
+ case 'x':
+ xfer_len = sg_get_num(optarg);
+ if (-1 == xfer_len) {
+ pr2serr("bad argument to '--xfer_len'\n");
+ return SG_LIB_SYNTAX_ERROR;
+ }
+ break;
+ default:
+ pr2serr("unrecognised option code 0x%x ??\n", c);
+ usage();
+ return SG_LIB_SYNTAX_ERROR;
+ }
+ }
+ 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;
+ }
+ }
+
+#ifdef DEBUG
+ pr2serr("In DEBUG mode, ");
+ if (verbose_given && version_given) {
+ pr2serr("but override: '-vV' given, zero verbose and continue\n");
+ verbose_given = false;
+ version_given = false;
+ verbose = 0;
+ } else if (! verbose_given) {
+ pr2serr("set '-vv'\n");
+ verbose = 2;
+ } else
+ pr2serr("keep verbose=%d\n", verbose);
+#else
+ if (verbose_given && version_given)
+ pr2serr("Not in DEBUG mode, so '-vV' has no special action\n");
+#endif
+ if (version_given) {
+ pr2serr(ME "version: %s\n", version_str);
+ return 0;
+ }
+
+ if (NULL == device_name) {
+ pr2serr("Missing device name!\n\n");
+ usage();
+ return SG_LIB_SYNTAX_ERROR;
+ }
+ if (wr_uncor)
+ xfer_len = 0;
+ else if (xfer_len >= MAX_XFER_LEN) {
+ pr2serr("xfer_len (%d) is out of range ( < %d)\n", xfer_len,
+ MAX_XFER_LEN);
+ usage();
+ return SG_LIB_SYNTAX_ERROR;
+ }
+ sg_fd = sg_cmds_open_device(device_name, false /* rw */, verbose);
+ if (sg_fd < 0) {
+ if (verbose)
+ pr2serr(ME "open error: %s: %s\n", device_name,
+ safe_strerror(-sg_fd));
+ ret = sg_convert_errno(-sg_fd);
+ goto err_out;
+ }
+
+ if (wr_uncor) {
+ if ('\0' != file_name[0])
+ pr2serr(">>> warning: when '--wr_uncor' given '-in=' is "
+ "ignored\n");
+ } else {
+ if (NULL == (rawp = sg_memalign(MAX_XFER_LEN, 0, &free_rawp, false))) {
+ pr2serr(ME "out of memory\n");
+ ret = sg_convert_errno(ENOMEM);
+ goto err_out;
+ }
+ writeLongBuff = (uint8_t *)rawp;
+ memset(rawp, 0xff, MAX_XFER_LEN);
+ if (file_name[0]) {
+ got_stdin = (0 == strcmp(file_name, "-"));
+ if (got_stdin) {
+ infd = STDIN_FILENO;
+ if (sg_set_binary_mode(STDIN_FILENO) < 0)
+ perror("sg_set_binary_mode");
+ } else {
+ if ((infd = open(file_name, O_RDONLY)) < 0) {
+ snprintf(ebuff, EBUFF_SZ,
+ ME "could not open %s for reading", file_name);
+ perror(ebuff);
+ goto err_out;
+ } else if (sg_set_binary_mode(infd) < 0)
+ perror("sg_set_binary_mode");
+ }
+ res = read(infd, writeLongBuff, xfer_len);
+ if (res < 0) {
+ snprintf(ebuff, EBUFF_SZ, ME "couldn't read from %s",
+ file_name);
+ perror(ebuff);
+ if (! got_stdin)
+ close(infd);
+ goto err_out;
+ }
+ if (res < xfer_len) {
+ pr2serr("tried to read %d bytes from %s, got %d bytes\n",
+ xfer_len, file_name, res);
+ pr2serr("pad with 0xff bytes and continue\n");
+ }
+ if (! got_stdin)
+ close(infd);
+ }
+ }
+ if (verbose)
+ pr2serr(ME "issue write long to device %s\n\t\txfer_len= %d (0x%x), "
+ "lba=%" PRIu64 " (0x%" PRIx64 ")\n cor_dis=%d, "
+ "wr_uncor=%d, pblock=%d\n", device_name, xfer_len, xfer_len,
+ llba, llba, (int)cor_dis, (int)wr_uncor, (int)pblock);
+
+ ten_or = do_16 ? "16" : "10";
+ if (do_16)
+ res = sg_ll_write_long16(sg_fd, cor_dis, wr_uncor, pblock, llba,
+ writeLongBuff, xfer_len, &offset, true,
+ verbose);
+ else
+ res = sg_ll_write_long10(sg_fd, cor_dis, wr_uncor, pblock,
+ (unsigned int)llba, writeLongBuff, xfer_len,
+ &offset, true, verbose);
+ ret = res;
+ switch (res) {
+ case 0:
+ break;
+ case SG_LIB_CAT_ILLEGAL_REQ_WITH_INFO:
+ pr2serr("<<< device indicates 'xfer_len' should be %d >>>\n",
+ xfer_len - offset);
+ break;
+ default:
+ sg_get_category_sense_str(res, sizeof(b), b, verbose);
+ pr2serr(" SCSI WRITE LONG (%s): %s\n", ten_or, b);
+ break;
+ }
+
+err_out:
+ if (free_rawp)
+ free(free_rawp);
+ if (sg_fd >= 0) {
+ res = sg_cmds_close_device(sg_fd);
+ if (res < 0) {
+ pr2serr("close error: %s\n", safe_strerror(-res));
+ if (0 == ret)
+ ret = sg_convert_errno(-res);
+ }
+ }
+ if (0 == verbose) {
+ if (! sg_if_can2stderr("sg_write_long failed: ", ret))
+ pr2serr("Some error occurred, try again with '-v' "
+ "or '-vv' for more information\n");
+ }
+ return (ret >= 0) ? ret : SG_LIB_CAT_OTHER;
+}
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