inquiry.c

对SCSI设备 直接存取的通用库

#include <stdio.h>
#include <stdlib.h>
#include <errno.h>
#include <scsi/all.h>



char *prg;

char *types[] = {
    "direct access",
    "sequential access",
    "printer",
    "processor",
    "write once",
    "cdrom",
    "scanner",
    "optical memory",
    "medium changer",
    "communication",
    "graphics arts pre-press (0x0a)",
    "graphics arts pre-press (0x0b)",
    "reserved", "reserved", "reserved", "reserved", "reserved",
    "reserved", "reserved", "reserved", "reserved", "reserved",
    "reserved", "reserved", "reserved", "reserved", "reserved",
    "reserved", "reserved", "reserved", "reserved",
    "unknown"
};



int
main(int argc, char **argv)
{
    SCSI *fd;
    int i;
    struct sc_inquiry page;
    
    prg = argv[0];

    if (argc != 2) {
	fprintf(stderr, "usage: %s device\n", prg);
	exit(1);
    }

    if ((fd=sc_open(argv[1])) == NULL) {
	fprintf(stderr, "%s: can't open device %s: %s\n",
		prg, argv[1], strerror(errno));
	exit(1);
    }
    
    if (sc_inquiry(fd, &page) < 0) {
	sc_fstatus(fd, stderr, prg, "inquiry", 3);
	sc_close(fd);
	exit(1);
    }

    printf("Type:     %s", types[page.type]);
    if (page.type_qual)
	printf(" (qualifier %02x", page.type_qual);
    if (page.type_mod)
	printf("%smodifier %d",
	       (page.type_qual ? ", " : " ("), page.type_mod); 
    if (page.type_qual || page.type_mod)
	printf(")");
    printf("\n");
    printf("Vendor:   %s\n", page.vendor);
    printf("Product:  %s\n", page.product);
    printf("Revision: %s\n", page.revision);
    printf("Conforms: ");
    if (page.iso_ver)
	printf("iso-%d ", page.iso_ver);
    if (page.ecma_ver)
	printf("ecma-%d ", page.ecma_ver);
    if (page.ansi_ver)
	printf("ansi-%d", page.ansi_ver);
    if (!page.iso_ver && !page.ecma_ver && !page.ansi_ver)
	printf("none");
    printf("\n");
#define FLAG(f)	(page.f ? #f " " : "") 
    printf("Flags:    %s%s%s%s%s%s%s%s%s%s\n",
	   (page.removable ? "rmb " : ""),
	   FLAG(aenc), FLAG(trmiop),
	   FLAG(reladr), FLAG(wbus32), FLAG(wbus16), FLAG(sync),
	   FLAG(linked), FLAG(cmdque), FLAG(sftre));

    if (page.vlen1 || page.vlen2) {
	printf("Vendor specific:\n\t");
	if (page.vlen1)
	    disp_hex(page.vspec1, page.vlen1);
	if (page.vlen2) {
	    if (page.vlen1)
		printf("\n\t");
	    disp_hex(page.vspec2, page.vlen2);
	}
    }

    sc_close(fd);

    exit(0);
}


int
disp_hex(unsigned char *hex, int len)
{
    int i;

    for (i=0; i<len; i++) {
	printf("%02x ", hex[i]);
	if (i%16 == 15 && i<len-1)
	    printf("\n\t");
    }
    printf("\n");

    return 0;
}