1 files changed, 122 insertions, 0 deletions
diff --git a/examples/sg_simple16.c b/examples/sg_simple16.c
new file mode 100644
index 00000000..e119ca34
--- /dev/null
+++ b/examples/sg_simple16.c
@@ -0,0 +1,122 @@
+#include <unistd.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdint.h>
+#include <string.h>
+#include <errno.h>
+#include <sys/ioctl.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include "sg_lib.h"
+#include "sg_io_linux.h"
+
+/* This program performs a READ_16 command as scsi mid-level support
+   16 byte commands from lk 2.4.15
+
+*  Copyright (C) 2001-2018 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.
+
+   Invocation: sg_simple16 <scsi_device>
+
+   Version 1.04 (20180218)
+
+*/
+
+#define READ16_REPLY_LEN 512
+#define READ16_CMD_LEN 16
+
+#define EBUFF_SZ 256
+
+int main(int argc, char * argv[])
+{
+    int sg_fd, k, ok;
+    uint8_t r16_cdb [READ16_CMD_LEN] =
+                {0x88, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0};
+    sg_io_hdr_t io_hdr;
+    char * file_name = 0;
+    char ebuff[EBUFF_SZ];
+    uint8_t inBuff[READ16_REPLY_LEN];
+    uint8_t sense_buffer[32];
+
+    for (k = 1; k < argc; ++k) {
+        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_simple16 <sg_device>'\n");
+        return 1;
+    }
+
+    if ((sg_fd = open(file_name, O_RDWR)) < 0) {
+        snprintf(ebuff, EBUFF_SZ,
+                 "sg_simple16: error opening file: %s", file_name);
+        perror(ebuff);
+        return 1;
+    }
+    /* Just to be safe, check we have a new sg device by trying an ioctl */
+    if ((ioctl(sg_fd, SG_GET_VERSION_NUM, &k) < 0) || (k < 30000)) {
+        printf("sg_simple16: %s doesn't seem to be an new sg device\n",
+               file_name);
+        close(sg_fd);
+        return 1;
+    }
+
+    /* Prepare READ_16 command */
+    memset(&io_hdr, 0, sizeof(sg_io_hdr_t));
+    io_hdr.interface_id = 'S';
+    io_hdr.cmd_len = sizeof(r16_cdb);
+    /* io_hdr.iovec_count = 0; */  /* memset takes care of this */
+    io_hdr.mx_sb_len = sizeof(sense_buffer);
+    io_hdr.dxfer_direction = SG_DXFER_FROM_DEV;
+    io_hdr.dxfer_len = READ16_REPLY_LEN;
+    io_hdr.dxferp = inBuff;
+    io_hdr.cmdp = r16_cdb;
+    io_hdr.sbp = sense_buffer;
+    io_hdr.timeout = 20000;     /* 20000 millisecs == 20 seconds */
+    /* io_hdr.flags = 0; */     /* take defaults: indirect IO, etc */
+    /* io_hdr.pack_id = 0; */
+    /* io_hdr.usr_ptr = NULL; */
+
+    if (ioctl(sg_fd, SG_IO, &io_hdr) < 0) {
+        perror("sg_simple16: Inquiry SG_IO ioctl error");
+        close(sg_fd);
+        return 1;
+    }
+
+    /* now for the error processing */
+    ok = 0;
+    switch (sg_err_category3(&io_hdr)) {
+    case SG_LIB_CAT_CLEAN:
+        ok = 1;
+        break;
+    case SG_LIB_CAT_RECOVERED:
+        printf("Recovered error on READ_16, continuing\n");
+        ok = 1;
+        break;
+    default: /* won't bother decoding other categories */
+        sg_chk_n_print3("READ_16 command error", &io_hdr, 1);
+        break;
+    }
+
+    if (ok) { /* output result if it is available */
+        printf("READ_16 duration=%u millisecs, resid=%d, msg_status=%d\n",
+               io_hdr.duration, io_hdr.resid, (int)io_hdr.msg_status);
+    }
+
+    close(sg_fd);
+    return 0;
+}