/*
* This file has been modified for the cdrkit suite.
*
* The behaviour and appearence of the program code below can differ to a major
* extent from the version distributed by the original author(s).
*
* For details, see Changelog file distributed with the cdrkit package. If you
* received this file from another source then ask the distributing person for
* a log of modifications.
*
*/
/* @(#)scsi_scan.c 1.19 04/04/16 Copyright 1997-2004 J. Schilling */
/*
* Scan SCSI Bus.
* Stolen from sformat. Need a more general form to
* re-use it in sformat too.
*
* Copyright (c) 1997-2004 J. Schilling
*/
/*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2
* as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along with
* this program; see the file COPYING. If not, write to the Free Software
* Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#include <mconfig.h>
#include <stdio.h>
#include <errno.h>
#include <schily.h>
#include <usal/usalcmd.h>
#include <usal/scsidefs.h>
#include <usal/scsireg.h>
#include <usal/scsitransp.h>
#include "scsi_scan.h"
#include "wodim.h"
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <string.h>
static void print_product(FILE *f, struct scsi_inquiry *ip);
int select_target(SCSI *usalp, FILE *f);
#define MAXDEVCOUNT (256+26)
extern BOOL check_linux_26();
static void print_product(FILE *f, struct scsi_inquiry *ip) {
fprintf(f, "'%.8s' ", ip->vendor_info);
fprintf(f, "'%.16s' ", ip->prod_ident);
fprintf(f, "'%.4s' ", ip->prod_revision);
if (ip->add_len < 31) {
fprintf(f, "NON CCS ");
}
usal_fprintdev(f, ip);
}
SCSI * open_auto(int64_t need_size, int debug, int lverbose) {
int res;
SCSI * usalp = NULL;
char errstr[80];
#ifdef __linux__
/* quick-and-dirty code but should do what is supposed to, more quickly */
/*
* For Linux, try these strategies, in order:
* 1. stat /dev/cdrw or /dev/dvdrw, depending on size we need.
* 2. Read /proc/sys/dev/cdrom/info, look for a CD-R/DVD-R.
* Will fail for kernel 2.4 or if cdrom module not loaded.
* 3. stat /dev/cdrom, just assume that it can write media.
An example for procfs file contents, beware of the TABs
---
CD-ROM information, Id: cdrom.c 3.20 2003/12/17
drive name: hdc hda
drive speed: 40 40
drive # of slots: 1 1
Can close tray: 1 1
Can open tray: 1 1
Can lock tray: 1 1
Can change speed: 1 1
Can select disk: 0 0
Can read multisession: 1 1
Can read MCN: 1 1
Reports media changed: 1 1
Can play audio: 1 1
Can write CD-R: 0 1
Can write CD-RW: 0 1
Can read DVD: 1 1
Can write DVD-R: 0 1
Can write DVD-RAM: 0 1
Can read MRW: 0 1
Can write MRW: 0 1
Can write RAM: 0 1
---
*/
struct stat statbuf;
/* XXX Good guess? BD-RE recorders may not support CDRW anymore... */
char *type="CD-R", *key="Can write CD-R:", *guessdev="/dev/cdrw", *result=NULL;
FILE *fh;
if( need_size > 360000*2048 ) {
type="DVD-R";
guessdev="/dev/dvdrw";
key="Can write DVD-R:";
}
if(need_size>10240) /* don't bother with weird numbers */
fprintf(stderr, "Looking for a %s drive to store %.2f MiB...\n", type, (float)need_size/1048576.0);
if(0==stat(guessdev, &statbuf))
result=guessdev;
else if(0!= (fh = fopen("/proc/sys/dev/cdrom/info", "r")) ) {
/* ok, going the hard way */
char *nameline=NULL;
static char buf[256];
int kn = strlen(key);
buf[255]='\0';
while(fgets(buf, sizeof(buf), fh)) {
if(0==strncmp(buf, "drive name:", 11))
nameline=strdup(buf);
if(nameline && 0==strncmp(buf, key, kn)) {
int p=kn;
char *descptr=nameline+11; /* start at the known whitespace */
while(p<sizeof(buf) && buf[p]) {
if(buf[p]=='1' || buf[p]=='0') {
/* find the beginning of the descriptor */
for(;isspace((Uchar) *descptr);descptr++)
;
}
if(buf[p]=='1') {
result=descptr-5;
/* terminate on space/newline and stop there */
for(;*descptr;descptr++) {
if(isspace((Uchar) *descptr))
*(descptr--)='\0';
}
strncpy(result, "/dev/", 5);
break;
}
else { /* no hit, move to after word ending */
for(; *descptr && ! isspace((Uchar) *descptr); descptr++)
;
}
p++;
}
}
}
fclose(fh);
}
if(result)
fprintf(stderr, "Detected %s drive: %s\n", type, result);
if (0==stat("/dev/cdrom", &statbuf)) {
result = "/dev/cdrom";
fprintf(stderr, "Using /dev/cdrom of unknown capabilities\n");
}
if(result)
return usal_open(result, errstr, sizeof(errstr), debug, lverbose);
#endif /* __linux__ */
usalp = usal_open(NULL, errstr, sizeof(errstr), debug, lverbose);
if(!usalp)
return NULL;
res = list_devices(usalp, stdout, 1);
if(res>0)
return usalp;
else
usal_close(usalp);
return NULL;
}
int list_devices(SCSI *usalp, FILE *f, int pickup_first) {
int initiator;
int i;
int bus;
int tgt;
int lun = 0;
BOOL have_tgt;
int fd, ndevs=0;
struct stat statbuf;
char *lines[MAXDEVCOUNT];
char buf[256], perms[8], *p;
usalp->silent++;
/* XXX should be done before opening usal fprintf(stderr, "Beginning native device scan. This may take a while if devices are busy...\n"); */
for (bus = 0; bus < 1256; bus++) {
usal_settarget(usalp, bus, 0, 0);
if (!usal_havebus(usalp, bus))
continue;
initiator = usal_initiator_id(usalp);
//fprintf(f, "scsibus%d:\n", bus);
for (tgt = 0; tgt < 16; tgt++) {
usal_settarget(usalp, bus, tgt, lun);
have_tgt = unit_ready(usalp) || usalp->scmd->error != SCG_FATAL;
if (!have_tgt && tgt > 7) {
if (usalp->scmd->ux_errno == EINVAL)
break;
continue;
}
fd=usal_fileno(usalp, bus, tgt, lun);
strcpy(perms,"------");
if(fd>=0 && 0==fstat(fd, &statbuf)) {
if(statbuf.st_mode&S_IRUSR) perms[0]= 'r';
if(statbuf.st_mode&S_IWUSR) perms[1]= 'w';
if(statbuf.st_mode&S_IRGRP) perms[2]= 'r';
if(statbuf.st_mode&S_IWGRP) perms[3]= 'w';
if(statbuf.st_mode&S_IROTH) perms[4]= 'r';
if(statbuf.st_mode&S_IWOTH) perms[5]= 'w';
}
getdev(usalp, FALSE);
if(usalp->inq->type == INQ_ROMD || usalp->inq->type == INQ_WORM) {
char *p;
for(p=usalp->inq->vendor_info + 7 ; p >= usalp->inq->vendor_info; p--) {
if(isspace((unsigned char)*p))
*p='\0';
else
break;
}
for(p=usalp->inq->prod_ident + 15 ; p >= usalp->inq->prod_ident; p--) {
if(isspace((unsigned char)*p))
*p='\0';
else
break;
}
snprintf(buf, sizeof(buf), "%2d dev='%s'\t%s : '%.8s' '%.16s'\n", ndevs, usal_natname(usalp, bus, tgt, lun), perms, usalp->inq->vendor_info, usalp->inq->prod_ident);
/* alternative use, only select the first device */
if(pickup_first) {
printf("Using drive: %s\n", usal_natname(usalp, bus, tgt, lun));
return 1;
}
lines[ndevs++]=strdup(buf);
}
}
}
usalp->silent--;
/* should have been returned before if there was a recorder */
if(pickup_first)
return 0;
/* now start the output */
fprintf(stdout, "%s: Overview of accessible drives (%d found) :\n"
"-------------------------------------------------------------------------\n",
get_progname(), ndevs);
for(i=0;i<ndevs;i++) {
fprintf(stdout, "%s", lines[i]);
free(lines[i]);
}
fprintf(stdout, "-------------------------------------------------------------------------\n");
return ndevs;
}
int select_target(SCSI *usalp, FILE *f) {
int initiator;
#ifdef FMT
int cscsibus = usal_scsibus(usalp);
int ctarget = usal_target(usalp);
int clun = usal_lun(usalp);
#endif
int n;
int low = -1;
int high = -1;
int amt = 0;
int bus;
int tgt;
int lun = 0;
BOOL have_tgt;
usalp->silent++;
for (bus = 0; bus < 1256; bus++) {
usal_settarget(usalp, bus, 0, 0);
if (!usal_havebus(usalp, bus))
continue;
initiator = usal_initiator_id(usalp);
fprintf(f, "scsibus%d:\n", bus);
for (tgt = 0; tgt < 16; tgt++) {
n = bus*100 + tgt;
usal_settarget(usalp, bus, tgt, lun);
have_tgt = unit_ready(usalp) || usalp->scmd->error != SCG_FATAL;
if (!have_tgt && tgt > 7) {
if (usalp->scmd->ux_errno == EINVAL)
break;
continue;
}
#ifdef FMT
if (print_disknames(bus, tgt, -1) < 8)
fprintf(f, "\t");
else
fprintf(f, " ");
#else
fprintf(f, "\t");
#endif
if (fprintf(f, "%d,%d,%d", bus, tgt, lun) < 8)
fprintf(f, "\t");
else
fprintf(f, " ");
fprintf(f, "%3d) ", n);
if (tgt == initiator) {
fprintf(f, "HOST ADAPTOR\n");
continue;
}
if (!have_tgt) {
/*
* Hack: fd -> -2 means no access
*/
fprintf(f, "%c\n", usalp->fd == -2 ? '?':'*');
continue;
}
amt++;
if (low < 0)
low = n;
high = n;
getdev(usalp, FALSE);
print_product(f, usalp->inq);
}
}
usalp->silent--;
if (low < 0) {
errmsgno(EX_BAD, "No target found.\n");
return (0);
}
n = -1;
#ifdef FMT
getint("Select target", &n, low, high);
bus = n/100;
tgt = n%100;
usal_settarget(usalp, bus, tgt, lun);
return (select_unit(usalp));
usal_settarget(usalp, cscsibus, ctarget, clun);
#endif
return (amt);
}
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