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324 lines
8.1 KiB
324 lines
8.1 KiB
/* Copyright 1996 Grant R. Guenther, based on work of Itai Nahshon
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* http://www.torque.net/ziptool.html
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* Copyright 1997-1999,2001,2002,2005,2007,2009 Alain Knaff.
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* This file is part of mtools.
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*
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* Mtools is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* Mtools is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with Mtools. If not, see <http://www.gnu.org/licenses/>.
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*
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* scsi.c
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* Iomega Zip/Jaz drive tool
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* change protection mode and eject disk
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*/
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/* scis.c by Markus Gyger <mgyger@itr.ch> */
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/* This code is based on ftp://gear.torque.net/pub/ziptool.c */
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/* by Grant R. Guenther with the following copyright notice: */
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/* (c) 1996 Grant R. Guenther, based on work of Itai Nahshon */
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/* http://www.torque.net/ziptool.html */
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/* A.K. Moved this from mzip.c to a separate file in order to share with
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* plain_io.c */
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#include "sysincludes.h"
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#include "mtools.h"
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#include "scsi.h"
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#if defined OS_hpux
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#include <sys/scsi.h>
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#endif
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#ifdef OS_solaris
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#include <sys/scsi/scsi.h>
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#endif /* solaris */
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#ifdef OS_sunos
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#include <scsi/generic/commands.h>
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#include <scsi/impl/uscsi.h>
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#endif /* sunos */
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#ifdef sgi
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#include <sys/dsreq.h>
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#endif
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#ifdef OS_linux
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#include <scsi/scsi.h>
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#include <scsi/sg.h>
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#endif
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#ifdef _SCO_DS
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#include <sys/scsicmd.h>
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#endif
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#if (defined(OS_freebsd)) && (__FreeBSD__ >= 2)
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#include <camlib.h>
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#endif
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#if defined(OS_netbsd) || defined(OS_netbsdelf)
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#include <sys/scsiio.h>
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#endif
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int scsi_max_length(void)
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{
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#ifdef OS_linux
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return 8;
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#else
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return 255;
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#endif
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}
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int scsi_open(const char *name, int flag UNUSEDP, int mode UNUSEDP,
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void **extra_data UNUSEDP)
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{
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#if (defined(OS_freebsd)) && (__FreeBSD__ >= 2)
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struct cam_device *cam_dev;
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cam_dev = cam_open_device(name, O_RDWR);
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*extra_data = (void *) cam_dev;
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if (cam_dev)
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return cam_dev->fd;
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else
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return -1;
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#else
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return open(name, O_RDONLY | O_LARGEFILE | O_BINARY
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#ifdef O_NDELAY
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| O_NDELAY
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#endif
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/* O_RDONLY | dev->mode*/);
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#endif
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}
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int scsi_cmd(int fd, unsigned char *cdb, int cmdlen, scsi_io_mode_t mode,
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void *data, size_t len, void *extra_data UNUSEDP)
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{
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#if defined OS_hpux
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struct sctl_io sctl_io;
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memset(&sctl_io, 0, sizeof sctl_io); /* clear reserved fields */
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memcpy(sctl_io.cdb, cdb, cmdlen); /* copy command */
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sctl_io.cdb_length = cmdlen; /* command length */
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sctl_io.max_msecs = 2000; /* allow 2 seconds for cmd */
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switch (mode) {
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case SCSI_IO_READ:
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sctl_io.flags = SCTL_READ;
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sctl_io.data_length = len;
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sctl_io.data = data;
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break;
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case SCSI_IO_WRITE:
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sctl_io.flags = 0;
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sctl_io.data_length = data ? len : 0;
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sctl_io.data = len ? data : 0;
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break;
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}
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if (ioctl(fd, SIOC_IO, &sctl_io) == -1) {
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perror("scsi_io");
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return -1;
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}
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return sctl_io.cdb_status;
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#elif defined OS_sunos || defined OS_solaris
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struct uscsi_cmd uscsi_cmd;
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memset(&uscsi_cmd, 0, sizeof uscsi_cmd);
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uscsi_cmd.uscsi_cdb = (char *)cdb;
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uscsi_cmd.uscsi_cdblen = cmdlen;
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#ifdef OS_solaris
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uscsi_cmd.uscsi_timeout = 20; /* msec? */
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#endif /* solaris */
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uscsi_cmd.uscsi_buflen = (u_int)len;
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uscsi_cmd.uscsi_bufaddr = data;
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switch (mode) {
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case SCSI_IO_READ:
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uscsi_cmd.uscsi_flags = USCSI_READ;
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break;
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case SCSI_IO_WRITE:
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uscsi_cmd.uscsi_flags = USCSI_WRITE;
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break;
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}
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if (ioctl(fd, USCSICMD, &uscsi_cmd) == -1) {
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perror("scsi_io");
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return -1;
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}
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if(uscsi_cmd.uscsi_status) {
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errno = 0;
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fprintf(stderr,"scsi status=%x\n",
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(unsigned short)uscsi_cmd.uscsi_status);
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return -1;
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}
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return 0;
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#elif defined OS_linux
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struct sg_io_hdr my_scsi_cmd;
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/*
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** Init the command
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*/
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memset(&my_scsi_cmd,0,sizeof(my_scsi_cmd));
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my_scsi_cmd.interface_id = 'S';
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my_scsi_cmd.dxfer_direction = (mode == SCSI_IO_READ)?(SG_DXFER_FROM_DEV):(SG_DXFER_TO_DEV);
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my_scsi_cmd.cmd_len = cmdlen;
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my_scsi_cmd.mx_sb_len = 0;
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my_scsi_cmd.dxfer_len = len;
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my_scsi_cmd.dxferp = data;
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my_scsi_cmd.cmdp = cdb;
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my_scsi_cmd.timeout = ~0; /* where is MAX_UINT defined??? */
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#ifdef DEBUG
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printf("CMD(%d): %02x%02x%02x%02x%02x%02x %sdevice\n",cmdlen,cdb[0],cdb[1],cdb[2],cdb[3],cdb[4],cdb[5],
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(mode==SCSI_IO_READ)?("<-"):("->"));
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printf("DATA : len = %d\n",len);
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#endif
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if (ioctl(fd, SG_IO,&my_scsi_cmd) < 0) {
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perror("scsi_io");
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return -1;
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}
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return my_scsi_cmd.status & STATUS_MASK;
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#elif (defined _SCO_DS) && (defined SCSIUSERCMD)
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struct scsicmd my_scsi_cmd;
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memset(my_scsi_cmd.cdb, 0, SCSICMDLEN); /* ensure zero pad */
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memcpy(my_scsi_cmd.cdb, cdb, cmdlen);
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my_scsi_cmd.cdb_len = cmdlen;
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my_scsi_cmd.data_len = len;
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my_scsi_cmd.data_ptr = data;
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my_scsi_cmd.is_write = mode == SCSI_IO_WRITE;
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if (ioctl(fd,SCSIUSERCMD,&my_scsi_cmd) == -1) {
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perror("scsi_io: SCSIUSERCMD");
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return -1;
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}
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if (my_scsi_cmd.host_sts != 0 || my_scsi_cmd.target_sts != 0) {
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fprintf(stderr, "scsi_io: scsi status: host=%x; target=%x\n",
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(unsigned)my_scsi_cmd.host_sts,(unsigned)my_scsi_cmd.target_sts);
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return -1;
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}
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return 0;
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#elif defined sgi
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struct dsreq my_scsi_cmd;
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my_scsi_cmd.ds_cmdbuf = (char *)cdb;
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my_scsi_cmd.ds_cmdlen = cmdlen;
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my_scsi_cmd.ds_databuf = data;
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my_scsi_cmd.ds_datalen = len;
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switch (mode) {
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case SCSI_IO_READ:
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my_scsi_cmd.ds_flags = DSRQ_READ|DSRQ_SENSE;
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break;
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case SCSI_IO_WRITE:
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my_scsi_cmd.ds_flags = DSRQ_WRITE|DSRQ_SENSE;
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break;
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}
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my_scsi_cmd.ds_time = 10000;
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my_scsi_cmd.ds_link = 0;
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my_scsi_cmd.ds_synch =0;
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my_scsi_cmd.ds_ret =0;
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if (ioctl(fd, DS_ENTER, &my_scsi_cmd) == -1) {
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perror("scsi_io");
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return -1;
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}
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if(my_scsi_cmd.ds_status) {
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errno = 0;
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fprintf(stderr,"scsi status=%x\n",
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(unsigned short)my_scsi_cmd.ds_status);
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return -1;
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}
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return 0;
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#elif (defined OS_freebsd) && (__FreeBSD__ >= 2)
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#define MSG_SIMPLE_Q_TAG 0x20 /* O/O */
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union ccb *ccb;
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int flags;
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int r;
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struct cam_device *cam_dev = (struct cam_device *) extra_data;
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if (cam_dev==NULL || cam_dev->fd!=fd)
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{
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fprintf(stderr,"invalid file descriptor\n");
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return -1;
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}
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ccb = cam_getccb(cam_dev);
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bcopy(cdb, ccb->csio.cdb_io.cdb_bytes, cmdlen);
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if (mode == SCSI_IO_READ)
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flags = CAM_DIR_IN;
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else if (data && len)
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flags = CAM_DIR_OUT;
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else
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flags = CAM_DIR_NONE;
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cam_fill_csio(&ccb->csio,
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/* retry */ 1,
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/* cbfcnp */ NULL,
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flags,
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/* tag_action */ MSG_SIMPLE_Q_TAG,
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/*data_ptr*/ len ? data : 0,
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/*data_len */ data ? len : 0,
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96,
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cmdlen,
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5000);
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if (cam_send_ccb(cam_dev, ccb) < 0 ||
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(ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
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return -1;
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}
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return 0;
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#elif defined(OS_netbsd) || defined(OS_netbsdelf)
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struct scsireq sc;
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memset(&sc, 0, sizeof(sc));
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memcpy(sc.cmd, cdb, cmdlen);
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sc.cmdlen = cmdlen;
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sc.databuf = data;
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sc.datalen = len;
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sc.senselen = 0;
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sc.timeout = 10000;
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switch (mode) {
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case SCSI_IO_READ:
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sc.flags = SCCMD_READ;
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break;
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case SCSI_IO_WRITE:
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sc.flags = SCCMD_WRITE;
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break;
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}
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if (ioctl(fd, SCIOCCOMMAND, &sc) == -1) {
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perror("SCIOCCOMMAND ioctl");
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return -1;
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}
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if (sc.retsts) {
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errno = EIO;
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fprintf(stderr, "SCSI command failed, retsts %d\n",
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sc.retsts);
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return -1;
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}
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return 0;
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#else
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fprintf(stderr, "scsi_io not implemented\n");
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return -1;
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#endif
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}
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