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Diffstat (limited to 'examples/sg_simple5.c')
| -rw-r--r-- | examples/sg_simple5.c | 236 |
1 files changed, 236 insertions, 0 deletions
diff --git a/examples/sg_simple5.c b/examples/sg_simple5.c new file mode 100644 index 00000000..47bf7a05 --- /dev/null +++ b/examples/sg_simple5.c @@ -0,0 +1,236 @@ +#include <unistd.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> + +#include "sg_lib.h" +#include "sg_pt.h" + +/* This is a simple program executing a SCSI INQUIRY command and a + TEST UNIT READY command using the SCSI generic pass through + interface. This allows this example program to be ported to + OSes other than linux. + +* Copyright (C) 2006-20018 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. + + Invocation: sg_simple5 [-x] <scsi_device> + + Version 1.03 (20180220) + +*/ + +#define INQ_REPLY_LEN 96 +#define INQ_CMD_LEN 6 +#define TUR_CMD_LEN 6 + +#define CMD_TIMEOUT_SECS 60 + + +int main(int argc, char * argv[]) +{ + int sg_fd, k, ok, dsize, res, duration, resid, cat, got, slen; + uint8_t inq_cdb [INQ_CMD_LEN] = + {0x12, 0, 0, 0, INQ_REPLY_LEN, 0}; + uint8_t tur_cdb [TUR_CMD_LEN] = + {0x00, 0, 0, 0, 0, 0}; + uint8_t inqBuff[INQ_REPLY_LEN]; + char * file_name = 0; + char b[512]; + uint8_t sense_b[32]; + int verbose = 0; + struct sg_pt_base * ptvp; + + for (k = 1; k < argc; ++k) { + if (0 == strcmp("-v", argv[k])) + verbose = 1; + else if (0 == strcmp("-vv", argv[k])) + verbose = 2; + else if (0 == strcmp("-vvv", argv[k])) + verbose = 3; + else if (*argv[k] == '-') { + printf("Unrecognized switch: %s\n", argv[k]); + file_name = 0; + break; + } + else if (0 == file_name) + file_name = argv[k]; + else { + printf("too many arguments\n"); + file_name = 0; + break; + } + } + if (0 == file_name) { + printf("Usage: 'sg_simple5 [-v|-vv|-vvv] <device>'\n"); + return 1; + } + + sg_fd = scsi_pt_open_device(file_name, 1 /* ro */, 0); + /* N.B. An access mode of O_RDWR is required for some SCSI commands */ + if (sg_fd < 0) { + fprintf(stderr, "error opening file: %s: %s\n", + file_name, safe_strerror(-sg_fd)); + return 1; + } + + dsize = sizeof(inqBuff); + ok = 0; + + ptvp = construct_scsi_pt_obj(); /* one object per command */ + if (NULL == ptvp) { + fprintf(stderr, "sg_simple5: out of memory\n"); + return -1; + } + 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, inqBuff, dsize); + res = do_scsi_pt(ptvp, sg_fd, CMD_TIMEOUT_SECS, verbose); + if (res < 0) { + fprintf(stderr, " pass through os error: %s\n", + safe_strerror(-res)); + goto finish_inq; + } else if (SCSI_PT_DO_BAD_PARAMS == res) { + fprintf(stderr, " bad pass through setup\n"); + goto finish_inq; + } else if (SCSI_PT_DO_TIMEOUT == res) { + fprintf(stderr, " pass through timeout\n"); + goto finish_inq; + } + if ((verbose > 1) && ((duration = get_scsi_pt_duration_ms(ptvp)) >= 0)) + fprintf(stderr, " duration=%d ms\n", duration); + resid = get_scsi_pt_resid(ptvp); + switch ((cat = get_scsi_pt_result_category(ptvp))) { + case SCSI_PT_RESULT_GOOD: + got = dsize - resid; + if (verbose && (resid > 0)) + fprintf(stderr, " requested %d bytes but " + "got %d bytes)\n", dsize, got); + break; + case SCSI_PT_RESULT_STATUS: /* other than GOOD and CHECK CONDITION */ + if (verbose) { + sg_get_scsi_status_str(get_scsi_pt_status_response(ptvp), + sizeof(b), b); + fprintf(stderr, " scsi status: %s\n", b); + } + goto finish_inq; + case SCSI_PT_RESULT_SENSE: + slen = get_scsi_pt_sense_len(ptvp); + if (verbose) { + sg_get_sense_str("", sense_b, slen, (verbose > 1), + sizeof(b), b); + fprintf(stderr, "%s", b); + } + if (verbose && (resid > 0)) { + got = dsize - resid; + if ((verbose) || (got > 0)) + fprintf(stderr, " requested %d bytes but " + "got %d bytes\n", dsize, got); + } + goto finish_inq; + case SCSI_PT_RESULT_TRANSPORT_ERR: + if (verbose) { + get_scsi_pt_transport_err_str(ptvp, sizeof(b), b); + fprintf(stderr, " transport: %s", b); + } + goto finish_inq; + case SCSI_PT_RESULT_OS_ERR: + if (verbose) { + get_scsi_pt_os_err_str(ptvp, sizeof(b), b); + fprintf(stderr, " os: %s", b); + } + goto finish_inq; + default: + fprintf(stderr, " unknown pass through result " + "category (%d)\n", cat); + goto finish_inq; + } + + ok = 1; +finish_inq: + destruct_scsi_pt_obj(ptvp); + + if (ok) { /* output result if it is available */ + char * p = (char *)inqBuff; + + printf("Some of the INQUIRY command's results:\n"); + printf(" %.8s %.16s %.4s\n", p + 8, p + 16, p + 32); + } + ok = 0; + + + /* Now prepare TEST UNIT READY command */ + ptvp = construct_scsi_pt_obj(); /* one object per command */ + if (NULL == ptvp) { + fprintf(stderr, "sg_simple5: out of memory\n"); + return -1; + } + set_scsi_pt_cdb(ptvp, tur_cdb, sizeof(tur_cdb)); + set_scsi_pt_sense(ptvp, sense_b, sizeof(sense_b)); + /* no data in or out */ + res = do_scsi_pt(ptvp, sg_fd, CMD_TIMEOUT_SECS, verbose); + if (res < 0) { + fprintf(stderr, " pass through os error: %s\n", + safe_strerror(-res)); + goto finish_inq; + } else if (SCSI_PT_DO_BAD_PARAMS == res) { + fprintf(stderr, " bad pass through setup\n"); + goto finish_inq; + } else if (SCSI_PT_DO_TIMEOUT == res) { + fprintf(stderr, " pass through timeout\n"); + goto finish_inq; + } + if ((verbose > 1) && ((duration = get_scsi_pt_duration_ms(ptvp)) >= 0)) + fprintf(stderr, " duration=%d ms\n", duration); + resid = get_scsi_pt_resid(ptvp); + switch ((cat = get_scsi_pt_result_category(ptvp))) { + case SCSI_PT_RESULT_GOOD: + break; + case SCSI_PT_RESULT_STATUS: /* other than GOOD and CHECK CONDITION */ + if (verbose) { + sg_get_scsi_status_str(get_scsi_pt_status_response(ptvp), + sizeof(b), b); + fprintf(stderr, " scsi status: %s\n", b); + } + goto finish_tur; + case SCSI_PT_RESULT_SENSE: + slen = get_scsi_pt_sense_len(ptvp); + if (verbose) { + sg_get_sense_str("", sense_b, slen, (verbose > 1), + sizeof(b), b); + fprintf(stderr, "%s", b); + } + goto finish_tur; + case SCSI_PT_RESULT_TRANSPORT_ERR: + if (verbose) { + get_scsi_pt_transport_err_str(ptvp, sizeof(b), b); + fprintf(stderr, " transport: %s", b); + } + goto finish_tur; + case SCSI_PT_RESULT_OS_ERR: + if (verbose) { + get_scsi_pt_os_err_str(ptvp, sizeof(b), b); + fprintf(stderr, " os: %s", b); + } + goto finish_tur; + default: + fprintf(stderr, " unknown pass through result " + "category (%d)\n", cat); + goto finish_tur; + } + + ok = 1; +finish_tur: + destruct_scsi_pt_obj(ptvp); + + if (ok) + printf("Test Unit Ready successful so unit is ready!\n"); + else + printf("Test Unit Ready failed so unit may _not_ be ready!\n"); + + scsi_pt_close_device(sg_fd); + return 0; +} |