/*
$Id: scan_devices.c,v 1.29 2005/08/27 14:28:30 rocky Exp $
Copyright (C) 2004, 2005 Rocky Bernstein <rocky@panix.com>
Copyright (C) 1998 Monty xiphmont@mit.edu
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
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; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
/******************************************************************
*
* Autoscan for or verify presence of a CD-ROM device
*
******************************************************************/
#include "common_interface.h"
#include "low_interface.h"
#include "utils.h"
#include "cdio/mmc.h"
#include <limits.h>
#include <ctype.h>
#ifdef HAVE_PWD_H
#include <pwd.h>
#endif
#ifdef HAVE_SYS_STAT_H
#include <sys/stat.h>
#endif
#define MAX_DEV_LEN 20 /* Safe because strings only come from below */
/* must be absolute paths! */
const char *scsi_cdrom_prefixes[]={
"/dev/scd",
"/dev/sr",
NULL};
const char *scsi_generic_prefixes[]={
"/dev/sg",
NULL};
const char *devfs_scsi_test="/dev/scsi/";
const char *devfs_scsi_cd="cd";
const char *devfs_scsi_generic="generic";
const char *cdrom_devices[]={
"/dev/cdrom",
"/dev/cdroms/cdrom?",
"/dev/hd?",
"/dev/sg?",
"/dev/cdu31a",
"/dev/cdu535",
"/dev/sbpcd",
"/dev/sbpcd?",
"/dev/sonycd",
"/dev/mcd",
"/dev/sjcd",
/* "/dev/aztcd", timeout is too long */
"/dev/cm206cd",
"/dev/gscd",
"/dev/optcd",NULL};
static cdrom_drive_t *
cdda_identify_device_cdio(CdIo_t *p_cdio, const char *psz_device,
int messagedest, char **ppsz_messages);
/* Functions here look for a cdrom drive; full init of a drive type
happens in interface.c */
cdrom_drive_t *
cdio_cddap_find_a_cdrom(int messagedest, char **ppsz_messages){
/* Brute force... */
int i=0;
cdrom_drive_t *d;
while(cdrom_devices[i]!=NULL){
/* is it a name or a pattern? */
char *pos;
if((pos=strchr(cdrom_devices[i],'?'))){
int j;
/* try first eight of each device */
for(j=0;j<4;j++){
char *buffer=strdup(cdrom_devices[i]);
/* number, then letter */
buffer[pos-(cdrom_devices[i])]=j+48;
if((d=cdda_identify(buffer, messagedest, ppsz_messages)))
return(d);
idmessage(messagedest, ppsz_messages, "", NULL);
buffer[pos-(cdrom_devices[i])]=j+97;
if((d=cdda_identify(buffer, messagedest, ppsz_messages)))
return(d);
idmessage(messagedest, ppsz_messages, "", NULL);
}
}else{
/* Name. Go for it. */
if((d=cdda_identify(cdrom_devices[i], messagedest, ppsz_messages)))
return(d);
idmessage(messagedest, ppsz_messages, "", NULL);
}
i++;
}
{
#if defined(HAVE_GETPWUID) && defined(HAVE_GETEUID)
struct passwd *temp;
temp=getpwuid(geteuid());
idmessage(messagedest, ppsz_messages,
"\n\nNo cdrom drives accessible to %s found.\n",
temp->pw_name);
#else
idmessage(messagedest, ppsz_messages,
"\n\nNo cdrom drives accessible found.\n", NULL);
#endif
}
return(NULL);
}
#ifdef DEVICE_IN_FILESYSTEM
static char *
test_resolve_symlink(const char *file, int messagedest, char **ppsz_messages)
{
char resolved[PATH_MAX];
struct stat st;
if (lstat(file,&st)){
idperror(messagedest, ppsz_messages, "\t\tCould not stat %s",file);
return(NULL);
}
if (realpath(file,resolved))
return(strdup(resolved));
idperror(messagedest, ppsz_messages, "\t\tCould not resolve symlink %s",
file);
return(NULL);
}
#endif
/** Returns a paranoia CD-ROM drive object with a CD-DA in it or NULL
if there was an error.
@see cdio_cddap_identify_cdio
*/
cdrom_drive_t *
cdio_cddap_identify(const char *psz_dev, int messagedest,
char **ppsz_messages)
{
CdIo_t *p_cdio = NULL;
if (psz_dev)
idmessage(messagedest, ppsz_messages, "Checking %s for cdrom...",
psz_dev);
else
idmessage(messagedest, ppsz_messages, "Checking for cdrom...", NULL);
#ifdef DEVICE_IN_FILESYSTEM
if (psz_dev) {
char *psz_device = test_resolve_symlink(psz_dev, messagedest,
ppsz_messages);
if ( psz_device ) {
cdrom_drive_t *d=NULL;
p_cdio = cdio_open(psz_device, DRIVER_UNKNOWN);
d = cdda_identify_device_cdio(p_cdio, psz_device, messagedest,
ppsz_messages);
free(psz_device);
return d;
}
}
#endif
p_cdio = cdio_open(psz_dev, DRIVER_UNKNOWN);
if (p_cdio) {
if (!psz_dev) {
psz_dev = cdio_get_arg(p_cdio, "source");
}
return cdda_identify_device_cdio(p_cdio, psz_dev, messagedest,
ppsz_messages);
}
return NULL;
}
/** Returns a paranoia CD-ROM drive object with a CD-DA in it or NULL
if there was an error. In contrast to cdio_cddap_identify, we
start out with an initialized p_cdio object. For example you may
have used that for other purposes such as to get CDDB/CD-Text
information. @see cdio_cddap_identify
*/
cdrom_drive_t *
cdio_cddap_identify_cdio(CdIo_t *p_cdio, int messagedest, char **ppsz_messages)
{
if (!p_cdio) return NULL;
{
const char *psz_device = cdio_get_arg(p_cdio, "source");
idmessage(messagedest, ppsz_messages, "Checking %s for cdrom...",
psz_device);
return cdda_identify_device_cdio(p_cdio, psz_device, messagedest,
ppsz_messages);
}
}
static cdrom_drive_t *
cdda_identify_device_cdio(CdIo_t *p_cdio, const char *psz_device,
int messagedest, char **ppsz_messages)
{
cdrom_drive_t *d=NULL;
int drive_type = 0;
char *description=NULL;
#ifdef HAVE_LINUX_MAJOR_H
struct stat st;
#endif
if (!p_cdio) {
idperror(messagedest, ppsz_messages, "\t\tUnable to open %s", psz_device);
return NULL;
}
#ifdef HAVE_LINUX_MAJOR_H
if ( 0 == stat(psz_device, &st) ) {
if (S_ISCHR(st.st_mode) || S_ISBLK(st.st_mode)) {
drive_type=(int)(st.st_rdev>>8);
switch (drive_type) {
case IDE0_MAJOR:
case IDE1_MAJOR:
case IDE2_MAJOR:
case IDE3_MAJOR:
/* Yay, ATAPI... */
description=strdup("ATAPI compatible ");
break;
case CDU31A_CDROM_MAJOR:
/* major indicates this is a cdrom; no ping necessary. */
description=strdup("Sony CDU31A or compatible");
break;
case CDU535_CDROM_MAJOR:
/* major indicates this is a cdrom; no ping necessary. */
description=strdup("Sony CDU535 or compatible");
break;
case MATSUSHITA_CDROM_MAJOR:
case MATSUSHITA_CDROM2_MAJOR:
case MATSUSHITA_CDROM3_MAJOR:
case MATSUSHITA_CDROM4_MAJOR:
/* major indicates this is a cdrom; no ping necessary. */
description=strdup("non-ATAPI IDE-style Matsushita/Panasonic CR-5xx or compatible");
break;
case SANYO_CDROM_MAJOR:
description=strdup("Sanyo proprietary or compatible: NOT CDDA CAPABLE");
break;
case MITSUMI_CDROM_MAJOR:
case MITSUMI_X_CDROM_MAJOR:
description=strdup("Mitsumi proprietary or compatible: NOT CDDA CAPABLE");
break;
case OPTICS_CDROM_MAJOR:
description=strdup("Optics Dolphin or compatible: NOT CDDA CAPABLE");
break;
case AZTECH_CDROM_MAJOR:
description=strdup("Aztech proprietary or compatible: NOT CDDA CAPABLE");
break;
case GOLDSTAR_CDROM_MAJOR:
description=strdup("Goldstar proprietary: NOT CDDA CAPABLE");
break;
case CM206_CDROM_MAJOR:
description=strdup("Philips/LMS CM206 proprietary: NOT CDDA CAPABLE");
break;
case SCSI_CDROM_MAJOR:
case SCSI_GENERIC_MAJOR:
/* Nope nope nope */
description=strdup("SCSI CD-ROM");
break;
default:
/* What the hell is this? */
idmessage(messagedest, ppsz_messages,
"\t\t%s is not a cooked ioctl CDROM.",
psz_device);
return(NULL);
}
}
}
#endif /*HAVE_LINUX_MAJOR_H*/
/* Minimum init */
d=calloc(1,sizeof(cdrom_drive_t));
d->p_cdio = p_cdio;
d->cdda_device_name = strdup(psz_device);
d->drive_type = drive_type;
d->bigendianp = -1; /* We don't know yet... */
d->nsectors = -1; /* We don't know yet... */
d->b_swap_bytes = true;
{
cdio_hwinfo_t hw_info;
if ( mmc_get_hwinfo( p_cdio, &hw_info ) ) {
unsigned int i_len = strlen(hw_info.psz_vendor)
+ strlen(hw_info.psz_model)
+ strlen(hw_info.psz_revision) + 5;
if (description) {
i_len += strlen(description);
d->drive_model=malloc( i_len );
snprintf( d->drive_model, i_len, "%s %s %s %s",
hw_info.psz_vendor, hw_info.psz_model, hw_info.psz_revision,
description );
free(description);
} else {
d->drive_model=malloc( i_len );
snprintf( d->drive_model, i_len, "%s %s %s",
hw_info.psz_vendor, hw_info.psz_model, hw_info.psz_revision
);
}
idmessage(messagedest, ppsz_messages, "\t\tCDROM sensed: %s\n",
d->drive_model);
}
}
return(d);
}
syntax highlighted by Code2HTML, v. 0.9.1