freebsd-dev/sbin/scsi/scsi.c
1995-01-26 23:40:40 +00:00

442 lines
9.0 KiB
C

/*
* Written By Julian ELischer
* Copyright julian Elischer 1993.
* Permission is granted to use or redistribute this file in any way as long
* as this notice remains. Julian Elischer does not guarantee that this file
* is totally correct for any given task and users of this file must
* accept responsibility for any damage that occurs from the application of this
* file.
*
* (julian@tfs.com julian@dialix.oz.au)
*
* User SCSI hooks added by Peter Dufault:
*
* Copyright (c) 1994 HD Associates
* (contact: dufault@hda.com)
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of HD Associates
* may not be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY HD ASSOCIATES ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL HD ASSOCIATES BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $Id: scsi.c,v 1.1.1.1 1995/01/24 12:07:27 dufault Exp $
*/
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <errno.h>
#include <sys/scsiio.h>
#include <sys/file.h>
#include <scsi.h>
int fd;
int debuglevel;
int dflag,cmd;
int reprobe;
int probe_all;
int verbose = 0;
int bus = -1; /* all busses */
int targ = -1; /* all targs */
int lun = 0; /* just lun 0 */
usage()
{
printf(
"Usage:\n"
"\n"
" scsi -f device -d debug_level # To set debug level\n"
" scsi -f device -p [-b bus] [-l lun] # To probe all devices\n"
" scsi -f device -r [-b bus] [-t targ] [-l lun] # To reprobe a device\n"
" scsi -f device [-v] -c cmd_fmt [arg0 ... argn] \\ # To send a command...\n"
" -o count out_fmt [arg0 ... argn] # EITHER (for data out)\n"
" -i count in_fmt # OR (for data in)\n"
"\n"
"\"out_fmt\" can be \"-\" to read output data from stdin;\n"
"\"in_fmt\" can be \"-\" to write input data to stdout;\n"
"\n"
"If debugging is not compiled in the kernel, \"-d\" will have no effect\n"
);
exit (1);
}
void procargs(int *argc_p, char ***argv_p)
{
int argc = *argc_p;
char **argv = *argv_p;
extern char *optarg;
extern int optind;
int fflag,
ch;
fflag = 0;
cmd = 0;
dflag = 0;
while ((ch = getopt(argc, argv, "vpcrf:d:b:t:l:")) != EOF) {
switch (ch) {
case 'p':
probe_all = 1;
break;
case 'r':
reprobe = 1;
break;
case 'c':
cmd = 1;
break;
case 'v':
verbose = 1;
break;
case 'f':
if ((fd = scsi_open(optarg, O_RDWR)) < 0) {
(void) fprintf(stderr,
"%s: unable to open device %s: %s\n",
argv[0], optarg, strerror(errno));
exit(errno);
}
fflag = 1;
break;
case 'd':
debuglevel = atoi(optarg);
dflag = 1;
break;
case 'b':
bus = atoi(optarg);
break;
case 't':
targ = atoi(optarg);
break;
case 'l':
lun = atoi(optarg);
break;
case '?':
default:
usage();
}
}
*argc_p = argc - optind;
*argv_p = argv + optind;
if (!fflag) usage();
}
/* get_hook: Structure for evaluating args in a callback.
*/
struct get_hook
{
int argc;
char **argv;
int got;
};
/* iget: Integer argument callback
*/
int iget(void *hook, char *name)
{
struct get_hook *h = (struct get_hook *)hook;
int arg;
if (h->got >= h->argc)
{
fprintf(stderr, "Expecting an integer argument.\n");
usage();
}
arg = atol(h->argv[h->got]);
h->got++;
return arg;
}
/* cget: char * argument callback
*/
char *cget(void *hook, char *name)
{
struct get_hook *h = (struct get_hook *)hook;
char *arg;
if (h->got >= h->argc)
{
fprintf(stderr, "Expecting a character pointer argument.\n");
usage();
}
arg = h->argv[h->got];
h->got++;
return arg;
}
/* arg_put: "put argument" callback
*/
void arg_put(void *hook, int letter, void *arg, int count, char *name)
{
if (verbose && name && *name)
printf("%s: ", name);
switch(letter)
{
case 'i':
case 'b':
printf("%d ", (int)arg);
break;
case 'c':
case 'z':
{
char *p = malloc(count + 1);
p[count] = 0;
strncpy(p, (char *)arg, count);
if (letter == 'z')
{
int i;
for (i = count - 1; i >= 0; i--)
if (p[i] == ' ')
p[i] = 0;
else
break;
}
printf("%s ", p);
}
break;
default:
printf("Unknown format letter: '%c'\n", letter);
}
if (verbose)
putchar('\n');
}
/* data_phase: SCSI bus data phase: DATA IN, DATA OUT, or no data transfer.
*/
enum data_phase {none = 0, in, out};
/* do_cmd: Send a command to a SCSI device
*/
void do_cmd(int fd, char *fmt, int argc, char **argv)
{
struct get_hook h;
scsireq_t *scsireq = scsireq_new();
enum data_phase data_phase;
int output = 0;
h.argc = argc;
h.argv = argv;
h.got = 0;
scsireq_reset(scsireq);
scsireq_build_visit(scsireq, 0, 0, 0, fmt, iget, (void *)&h);
/* Three choices here:
* 1. We've used up all the args and have no data phase.
* 2. We have input data ("-i")
* 3. We have output data ("-o")
*/
if (h.got >= h.argc)
data_phase = none;
else
{
char *flag = cget(&h, 0);
if (strcmp(flag, "-o") == 0)
data_phase = out;
else if (strcmp(flag, "-i") == 0)
data_phase = in;
else
{
fprintf(stderr,
"Need either \"-i\" or \"-o\" for data phase; not \"%s\".\n", flag);
usage();
}
}
if (data_phase == none)
scsireq->datalen = 0;
else
{
int count;
if (data_phase == out)
scsireq->flags = SCCMD_WRITE;
else
scsireq->flags = SCCMD_READ;
count = iget(&h, 0);
scsireq->datalen = count;
if (count)
{
char *data_fmt;
data_fmt = cget(&h, 0);
scsireq->databuf = malloc(count);
if (data_phase == out)
{
if (strcmp(data_fmt, "-") == 0) /* stdin */
{
if (read(0, scsireq->databuf, count) != count)
{
perror("read");
exit(errno);
}
}
else /* XXX: Not written yet */
{
fprintf(stderr, "Can't set up output data using %s.\n",
data_fmt);
exit(-1);
}
}
if (scsireq_enter(fd, scsireq) == -1)
{
scsi_debug(stderr, -1, scsireq);
exit(errno);
}
if (data_phase == in)
{
if (strcmp(data_fmt, "-") == 0) /* stdout */
{
if (write(1, scsireq->databuf, count) != count)
{
perror("write");
exit(errno);
}
}
else
{
scsireq_decode_visit(scsireq, data_fmt, arg_put, 0);
putchar('\n');
}
}
}
}
}
/* do_probe_all: Loop over all SCSI IDs and see if something is
* there. This only does BUS 0 LUN 0.
*/
do_probe_all()
{
scsireq_t *scsireq;
char vendor_id[8 + 1], product_id[16 + 1], revision[4 + 1];
int id;
u_char *inq_buf = malloc(96);
struct scsi_addr addr;
scsireq = scsireq_build(scsireq_new(),
96, inq_buf, SCCMD_READ,
"12 0 0 0 v 0", 96);
addr.scbus = (bus == -1) ? 0 : bus;
addr.lun = lun;
if (addr.scbus || addr.lun)
{
printf("For bus %d lun %d:\n", addr.scbus, addr.lun);
}
for (id = 0; id < 8; id++)
{
addr.target = id;
printf("%d: ", id);
if (ioctl(fd, SCIOCADDR, &addr) == -1) {
if (errno == ENXIO)
{
errno = 0;
printf("nothing.\n");
}
else
printf("SCIOCADDR: %s\n", strerror(errno));
continue;
}
if (scsireq_enter(fd, scsireq) == -1) {
printf("scsireq_enter: %s\n", strerror(errno));
continue;
}
vendor_id[sizeof(vendor_id) - 1] = 0;
product_id[sizeof(product_id) - 1] = 0;
revision[sizeof(revision) - 1] = 0;
scsireq_decode(scsireq, "s8 c8 c16 c4",
vendor_id, product_id, revision);
printf("%s %s %s\n", vendor_id, product_id, revision);
}
}
main(int argc, char **argv)
{
struct scsi_addr scaddr;
procargs(&argc,&argv);
if (probe_all) {
do_probe_all();
}
if(reprobe) {
scaddr.scbus = bus;
scaddr.target = targ;
scaddr.lun = lun;
if (ioctl(fd,SCIOCREPROBE,&scaddr) == -1)
perror("ioctl");
}
if(dflag) {
if (ioctl(fd,SCIOCDEBUG,&debuglevel) == -1)
{
perror("ioctl [SCIODEBUG]");
exit(1);
}
}
if (cmd) {
char *fmt;
if (argc <= 1)
{
fprintf(stderr, "Need the command format string.\n");
usage();
}
fmt = argv[0];
argc -= 1;
argv += 1;
do_cmd(fd, fmt, argc, argv);
}
}