1 /*
2 * This file has been modified for the cdrkit suite.
3 *
4 * The behaviour and appearence of the program code below can differ to a major
5 * extent from the version distributed by the original author(s).
6 *
7 * For details, see Changelog file distributed with the cdrkit package. If you
8 * received this file from another source then ask the distributing person for
9 * a log of modifications.
10 *
11 */
12
13 /* @(#)scsi_scan.c 1.19 04/04/16 Copyright 1997-2004 J. Schilling */
14 /*
15 * Scan SCSI Bus.
16 * Stolen from sformat. Need a more general form to
17 * re-use it in sformat too.
18 *
19 * Copyright (c) 1997-2004 J. Schilling
20 */
21 /*
22 * This program is free software; you can redistribute it and/or modify
23 * it under the terms of the GNU General Public License version 2
24 * as published by the Free Software Foundation.
25 *
26 * This program is distributed in the hope that it will be useful,
27 * but WITHOUT ANY WARRANTY; without even the implied warranty of
28 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
29 * GNU General Public License for more details.
30 *
31 * You should have received a copy of the GNU General Public License along with
32 * this program; see the file COPYING. If not, write to the Free Software
33 * Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
34 */
35
36 #include <mconfig.h>
37 #include <stdio.h>
38 #include <errno.h>
39 #include <schily.h>
40
41 #include <usal/usalcmd.h>
42 #include <usal/scsidefs.h>
43 #include <usal/scsireg.h>
44 #include <usal/scsitransp.h>
45
46 #include "scsi_scan.h"
47 #include "wodim.h"
48
49 #include <sys/types.h>
50 #include <sys/stat.h>
51 #include <unistd.h>
52 #include <string.h>
53 #include <ctype.h>
54 #include <stdlib.h>
55
56
57 static void print_product(FILE *f, struct scsi_inquiry *ip);
58 int select_target(SCSI *usalp, FILE *f);
59
60 #define MAXDEVCOUNT (256+26)
61
62 extern BOOL check_linux_26();
63
print_product(FILE * f,struct scsi_inquiry * ip)64 static void print_product(FILE *f, struct scsi_inquiry *ip) {
65 fprintf(f, "'%.8s' ", ip->vendor_info);
66 fprintf(f, "'%.16s' ", ip->prod_ident);
67 fprintf(f, "'%.4s' ", ip->prod_revision);
68 if (ip->add_len < 31) {
69 fprintf(f, "NON CCS ");
70 }
71 usal_fprintdev(f, ip);
72 }
73
open_auto(int64_t need_size,int debug,int lverbose)74 SCSI * open_auto(int64_t need_size, int debug, int lverbose) {
75 int res;
76 SCSI * usalp = NULL;
77 char errstr[80];
78
79 #ifdef __linux__
80 /* quick-and-dirty code but should do what is supposed to, more quickly */
81
82 /*
83 * For Linux, try these strategies, in order:
84 * 1. stat /dev/cdrw or /dev/dvdrw, depending on size we need.
85 * 2. Read /proc/sys/dev/cdrom/info, look for a CD-R/DVD-R.
86 * Will fail for kernel 2.4 or if cdrom module not loaded.
87 * 3. stat /dev/cdrom, just assume that it can write media.
88
89 An example for procfs file contents, beware of the TABs
90
91 ---
92 CD-ROM information, Id: cdrom.c 3.20 2003/12/17
93
94 drive name: hdc hda
95 drive speed: 40 40
96 drive # of slots: 1 1
97 Can close tray: 1 1
98 Can open tray: 1 1
99 Can lock tray: 1 1
100 Can change speed: 1 1
101 Can select disk: 0 0
102 Can read multisession: 1 1
103 Can read MCN: 1 1
104 Reports media changed: 1 1
105 Can play audio: 1 1
106 Can write CD-R: 0 1
107 Can write CD-RW: 0 1
108 Can read DVD: 1 1
109 Can write DVD-R: 0 1
110 Can write DVD-RAM: 0 1
111 Can read MRW: 0 1
112 Can write MRW: 0 1
113 Can write RAM: 0 1
114
115 ---
116 */
117 struct stat statbuf;
118 /* XXX Good guess? BD-RE recorders may not support CDRW anymore... */
119 char *type="CD-R", *key="Can write CD-R:", *guessdev="/dev/cdrw", *result=NULL;
120 FILE *fh;
121
122 if( need_size > 360000*2048 ) {
123 type="DVD-R";
124 guessdev="/dev/dvdrw";
125 key="Can write DVD-R:";
126 }
127
128 if(need_size>10240) /* don't bother with weird numbers */
129 fprintf(stderr, "Looking for a %s drive to store %.2f MiB...\n", type, (float)need_size/1048576.0);
130 if(0==stat(guessdev, &statbuf))
131 result=guessdev;
132 else if(0!= (fh = fopen("/proc/sys/dev/cdrom/info", "r")) ) {
133 /* ok, going the hard way */
134 char *nameline=NULL;
135 static char buf[256];
136 int kn = strlen(key);
137
138 buf[255]='\0';
139
140 while(fgets(buf, sizeof(buf), fh)) {
141 if(0==strncmp(buf, "drive name:", 11))
142 nameline=strdup(buf);
143 if(nameline && 0==strncmp(buf, key, kn)) {
144 int p=kn;
145 char *descptr=nameline+11; /* start at the known whitespace */
146 while(p<sizeof(buf) && buf[p]) {
147 if(buf[p]=='1' || buf[p]=='0') {
148 /* find the beginning of the descriptor */
149 for(;isspace((Uchar) *descptr);descptr++)
150 ;
151 }
152 if(buf[p]=='1') {
153 result=descptr-5;
154 /* terminate on space/newline and stop there */
155 for(;*descptr;descptr++) {
156 if(isspace((Uchar) *descptr))
157 *(descptr--)='\0';
158 }
159 strncpy(result, "/dev/", 5);
160 break;
161 }
162 else { /* no hit, move to after word ending */
163 for(; *descptr && ! isspace((Uchar) *descptr); descptr++)
164 ;
165 }
166 p++;
167 }
168 }
169
170 }
171 fclose(fh);
172 }
173
174 if(result)
175 fprintf(stderr, "Detected %s drive: %s\n", type, result);
176 if (0==stat("/dev/cdrom", &statbuf)) {
177 result = "/dev/cdrom";
178 fprintf(stderr, "Using /dev/cdrom of unknown capabilities\n");
179 }
180 if(result)
181 return usal_open(result, errstr, sizeof(errstr), debug, lverbose);
182 #endif /* __linux__ */
183
184 usalp = usal_open(NULL, errstr, sizeof(errstr), debug, lverbose);
185 if(!usalp)
186 return NULL;
187 res = list_devices(usalp, stdout, 1);
188 if(res>0)
189 return usalp;
190 else
191 usal_close(usalp);
192 return NULL;
193 }
194
list_devices(SCSI * usalp,FILE * f,int pickup_first)195 int list_devices(SCSI *usalp, FILE *f, int pickup_first) {
196 int initiator;
197 int i;
198 int bus;
199 int tgt;
200 int lun = 0;
201 BOOL have_tgt;
202
203 int fd, ndevs=0;
204 struct stat statbuf;
205 char *lines[MAXDEVCOUNT];
206 char buf[256], perms[8];
207
208
209 usalp->silent++;
210
211 /* XXX should be done before opening usal fprintf(stderr, "Beginning native device scan. This may take a while if devices are busy...\n"); */
212
213 for (bus = 0; bus < 1256; bus++) {
214 usal_settarget(usalp, bus, 0, 0);
215
216 if (!usal_havebus(usalp, bus))
217 continue;
218
219 initiator = usal_initiator_id(usalp);
220 //fprintf(f, "scsibus%d:\n", bus);
221
222 for (tgt = 0; tgt < 16; tgt++) {
223 usal_settarget(usalp, bus, tgt, lun);
224 have_tgt = unit_ready(usalp) || usalp->scmd->error != SCG_FATAL;
225
226 if (!have_tgt && tgt > 7) {
227 if (usalp->scmd->ux_errno == EINVAL)
228 break;
229 continue;
230 }
231
232 fd=usal_fileno(usalp, bus, tgt, lun);
233 strcpy(perms,"------");
234 if(fd>=0 && 0==fstat(fd, &statbuf)) {
235 if(statbuf.st_mode&S_IRUSR) perms[0]= 'r';
236 if(statbuf.st_mode&S_IWUSR) perms[1]= 'w';
237 if(statbuf.st_mode&S_IRGRP) perms[2]= 'r';
238 if(statbuf.st_mode&S_IWGRP) perms[3]= 'w';
239 if(statbuf.st_mode&S_IROTH) perms[4]= 'r';
240 if(statbuf.st_mode&S_IWOTH) perms[5]= 'w';
241 }
242 getdev(usalp, FALSE);
243 if(usalp->inq->type == INQ_ROMD || usalp->inq->type == INQ_WORM) {
244 char *p;
245
246 for(p=usalp->inq->vendor_info + 7 ; p >= usalp->inq->vendor_info; p--) {
247 if(isspace((unsigned char)*p))
248 *p='\0';
249 else
250 break;
251 }
252 for(p=usalp->inq->prod_ident + 15 ; p >= usalp->inq->prod_ident; p--) {
253 if(isspace((unsigned char)*p))
254 *p='\0';
255 else
256 break;
257 }
258 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);
259 /* alternative use, only select the first device */
260 if(pickup_first) {
261 printf("Using drive: %s\n", usal_natname(usalp, bus, tgt, lun));
262 return 1;
263 }
264 lines[ndevs++]=strdup(buf);
265 }
266
267 }
268 }
269 usalp->silent--;
270
271 /* should have been returned before if there was a recorder */
272 if(pickup_first)
273 return 0;
274
275 /* now start the output */
276
277 fprintf(stdout, "%s: Overview of accessible drives (%d found) :\n"
278 "-------------------------------------------------------------------------\n",
279 get_progname(), ndevs);
280 for(i=0;i<ndevs;i++) {
281 fprintf(stdout, "%s", lines[i]);
282 free(lines[i]);
283 }
284 fprintf(stdout, "-------------------------------------------------------------------------\n");
285
286 return ndevs;
287 }
288
select_target(SCSI * usalp,FILE * f)289 int select_target(SCSI *usalp, FILE *f) {
290 int initiator;
291 #ifdef FMT
292 int cscsibus = usal_scsibus(usalp);
293 int ctarget = usal_target(usalp);
294 int clun = usal_lun(usalp);
295 #endif
296 int n;
297 int low = -1;
298 int high = -1;
299 int amt = 0;
300 int bus;
301 int tgt;
302 int lun = 0;
303 BOOL have_tgt;
304
305 usalp->silent++;
306
307 for (bus = 0; bus < 1256; bus++) {
308 usal_settarget(usalp, bus, 0, 0);
309
310 if (!usal_havebus(usalp, bus))
311 continue;
312
313 initiator = usal_initiator_id(usalp);
314 fprintf(f, "scsibus%d:\n", bus);
315
316 for (tgt = 0; tgt < 16; tgt++) {
317 n = bus*100 + tgt;
318
319 usal_settarget(usalp, bus, tgt, lun);
320 have_tgt = unit_ready(usalp) || usalp->scmd->error != SCG_FATAL;
321
322 if (!have_tgt && tgt > 7) {
323 if (usalp->scmd->ux_errno == EINVAL)
324 break;
325 continue;
326 }
327
328 #ifdef FMT
329 if (print_disknames(bus, tgt, -1) < 8)
330 fprintf(f, "\t");
331 else
332 fprintf(f, " ");
333 #else
334 fprintf(f, "\t");
335 #endif
336 if (fprintf(f, "%d,%d,%d", bus, tgt, lun) < 8)
337 fprintf(f, "\t");
338 else
339 fprintf(f, " ");
340 fprintf(f, "%3d) ", n);
341 if (tgt == initiator) {
342 fprintf(f, "HOST ADAPTOR\n");
343 continue;
344 }
345 if (!have_tgt) {
346 /*
347 * Hack: fd -> -2 means no access
348 */
349 fprintf(f, "%c\n", usalp->fd == -2 ? '?':'*');
350 continue;
351 }
352 amt++;
353 if (low < 0)
354 low = n;
355 high = n;
356
357 getdev(usalp, FALSE);
358 print_product(f, usalp->inq);
359 }
360 }
361 usalp->silent--;
362
363 if (low < 0) {
364 errmsgno(EX_BAD, "No target found.\n");
365 return (0);
366 }
367 n = -1;
368 #ifdef FMT
369 getint("Select target", &n, low, high);
370 bus = n/100;
371 tgt = n%100;
372 usal_settarget(usalp, bus, tgt, lun);
373 return (select_unit(usalp));
374
375 usal_settarget(usalp, cscsibus, ctarget, clun);
376 #endif
377 return (amt);
378 }
379
380