src/MacOSX/sys_darwin.cpp

/*
 *      $Id$
 *
 *      sys_darwin.cpp - Extra Darwin system dependant routines. Called by:
 *
 *  sys_unix.cpp - System dependent routines, Unix implementation
 *
 *      Based on Apple's CDROMSample.c and Evan Jones' cd-discid.c patches
 *
 *  Basilisk II (C) 1997-2003 Christian Bauer
 *
 *  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
 */

#import <errno.h>
#import <sys/param.h>
#import <IOKit/IOKitLib.h>
#import <IOKit/IOBSD.h>
#import <IOKit/storage/IOMedia.h>
#import <IOKit/storage/IOMediaBSDClient.h>
#import <IOKit/storage/IOCDMedia.h>
#import <IOKit/storage/IOCDMediaBSDClient.h>
#import <CoreFoundation/CoreFoundation.h>

#import "sysdeps.h"

#import "prefs.h"

#define DEBUG 0
#import "debug.h"


/*
 *  This gets called when no "cdrom" prefs items are found
 *  It scans for available CD-ROM drives and adds appropriate prefs items
 */

void DarwinAddCDROMPrefs(void)
{
        mach_port_t                             masterPort;     // The way to talk to the kernel
        io_iterator_t                   allCDs;         // List of CD drives on the system
        CFMutableDictionaryRef  classesToMatch;
        io_object_t                             nextCD;


        // Don't scan for drives if nocdrom option given
        if ( PrefsFindBool("nocdrom") )
                return;


        // Let this task talk to the guts of the kernel:
        if ( IOMasterPort(MACH_PORT_NULL, &masterPort) != KERN_SUCCESS )
                bug("IOMasterPort failed. Won't be able to do anything with CD drives");


        // CD media are instances of class kIOCDMediaClass
        classesToMatch = IOServiceMatching(kIOCDMediaClass); 
        if ( classesToMatch )
        {
                // Narrow the search a little further. Each IOMedia object
                // has a property with key kIOMediaEjectable.  We limit
                // the match only to those CDs that are actually ejectable
                CFDictionarySetValue(classesToMatch,
                                                         CFSTR(kIOMediaEjectable), kCFBooleanTrue); 
        }

        if ( IOServiceGetMatchingServices(masterPort,
                                                                          classesToMatch, &allCDs) != KERN_SUCCESS )
        {
                D(bug("IOServiceGetMatchingServices failed. No CD media drives found?\n"));
                return;
        }


        // Iterate through each CD drive
        while ( nextCD = IOIteratorNext(allCDs))
        {
                char            bsdPath[MAXPATHLEN];
                CFTypeRef       bsdPathAsCFString =
                                                IORegistryEntryCreateCFProperty(nextCD, CFSTR(kIOBSDName),
                                                                                                                        kCFAllocatorDefault, 0);
                *bsdPath = '\0';
                if ( bsdPathAsCFString )
                {
                        size_t devPathLength;

                        strcpy(bsdPath, "/dev/");
                        devPathLength = strlen(bsdPath);

                        if ( CFStringGetCString((const __CFString *)bsdPathAsCFString,
                                                                         bsdPath + devPathLength,
                                                                         MAXPATHLEN - devPathLength,
                                                                         kCFStringEncodingASCII) )
                        {
                                // If we try to do raw reads on the file bsdPath (e.g. /dev/disk5),
                                // we get a lot of extra padding in the data. For some reason,
                                // the device we need has a different name (e.g. /dev/disk5s1)
                                //strcat(bsdPath, "s1");
                                D(bug("CDROM BSD path: %s\n", bsdPath));
                        }
                        else
                                D(bug("Could not get BSD device path for CD\n"));

                        CFRelease(bsdPathAsCFString);
                }

                PrefsAddString("cdrom", bsdPath);
        }

        IOObjectRelease(nextCD);
        IOObjectRelease(allCDs);
}


#ifdef MAC_OS_X_VERSION_10_2
/*
 *  Read CD-ROM TOC (binary MSF format, 804 bytes max.)
 */

bool DarwinCDReadTOC(char *name, uint8 *toc)
{
        char                            *c, *devname;
        int                                     fd;


        // The open filehandle is something like /dev/disk5s1
        // The DKIOCCDREADTOC ioctl needs the original cd file,
        // so we strip the s1 suffix off it, and open the file just for this ioctl

        devname = strdup(name);
        if ( ! devname )
                return false;

        for ( c = devname; *c; ++c ) ;  // Go to the end of the name,
        --c, --c;                                               // point to the 's1' on the end,
        *c = '\0';                                              // and truncate the string

        fd = open(devname, O_RDONLY);
        if ( ! fd )
        {
                printf("Failed to open CD device %s for ioctl\n", devname);
                free(devname);
                return false;
        }

        D(bug("Opened %s for ioctl()\n", devname));

        dk_cd_read_toc_t        TOCrequest;

        // Setup the ioctl request structure:

        memset(&TOCrequest, 0, sizeof(TOCrequest));
        TOCrequest.buffer = toc;
        TOCrequest.bufferLength = 804;
        TOCrequest.formatAsTime = kCDTrackInfoAddressTypeTrackNumber;

        if ( ioctl(fd, DKIOCCDREADTOC, &TOCrequest) < 0 )
        {
                printf("ioctl(DKIOCCDREADTOC) failed: %s\n", strerror(errno));
                close(fd);
                free(devname);
                return false;
        }
        if ( TOCrequest.bufferLength < sizeof(CDTOC) )
        {
                printf("ioctl(DKIOCCDREADTOC): only read %d bytes (a CDTOC is at least %d)\n",
                                                                                        TOCrequest.bufferLength, (int)sizeof(CDTOC));
                close(fd);
                free(devname);
                return false;
        }
        D(bug("ioctl(DKIOCCDREADTOC) read %d bytes\n", TOCrequest.bufferLength));

        close(fd);
        free(devname);
        return true;
}
#endif
Revision:	1.1
Committed:	2003-03-21T07:05:28Z (21 years, 3 months ago) by nigel
Branch:	MAIN
CVS Tags:	nigel-build-12, nigel-build-13
Log Message:	Darwin-specific CD code.
#	User	Rev	Content
1	nigel	1.1	/*
2			* $Id$
3			*
4			* sys_darwin.cpp - Extra Darwin system dependant routines. Called by:
5			*
6			* sys_unix.cpp - System dependent routines, Unix implementation
7			*
8			* Based on Apple's CDROMSample.c and Evan Jones' cd-discid.c patches
9			*
10			* Basilisk II (C) 1997-2003 Christian Bauer
11			*
12			* This program is free software; you can redistribute it and/or modify
13			* it under the terms of the GNU General Public License as published by
14			* the Free Software Foundation; either version 2 of the License, or
15			* (at your option) any later version.
16			*
17			* This program is distributed in the hope that it will be useful,
18			* but WITHOUT ANY WARRANTY; without even the implied warranty of
19			* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20			* GNU General Public License for more details.
21			*
22			* You should have received a copy of the GNU General Public License
23			* along with this program; if not, write to the Free Software
24			* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
25			*/
26
27			#import <errno.h>
28			#import <sys/param.h>
29			#import <IOKit/IOKitLib.h>
30			#import <IOKit/IOBSD.h>
31			#import <IOKit/storage/IOMedia.h>
32			#import <IOKit/storage/IOMediaBSDClient.h>
33			#import <IOKit/storage/IOCDMedia.h>
34			#import <IOKit/storage/IOCDMediaBSDClient.h>
35			#import <CoreFoundation/CoreFoundation.h>
36
37			#import "sysdeps.h"
38
39			#import "prefs.h"
40
41			#define DEBUG 0
42			#import "debug.h"
43
44
45
46			/*
47			* This gets called when no "cdrom" prefs items are found
48			* It scans for available CD-ROM drives and adds appropriate prefs items
49			*/
50
51			void DarwinAddCDROMPrefs(void)
52			{
53			mach_port_t masterPort; // The way to talk to the kernel
54			io_iterator_t allCDs; // List of CD drives on the system
55			CFMutableDictionaryRef classesToMatch;
56			io_object_t nextCD;
57
58
59			// Don't scan for drives if nocdrom option given
60			if ( PrefsFindBool("nocdrom") )
61			return;
62
63
64			// Let this task talk to the guts of the kernel:
65			if ( IOMasterPort(MACH_PORT_NULL, &masterPort) != KERN_SUCCESS )
66			bug("IOMasterPort failed. Won't be able to do anything with CD drives");
67
68
69			// CD media are instances of class kIOCDMediaClass
70			classesToMatch = IOServiceMatching(kIOCDMediaClass);
71			if ( classesToMatch )
72			{
73			// Narrow the search a little further. Each IOMedia object
74			// has a property with key kIOMediaEjectable. We limit
75			// the match only to those CDs that are actually ejectable
76			CFDictionarySetValue(classesToMatch,
77			CFSTR(kIOMediaEjectable), kCFBooleanTrue);
78			}
79
80			if ( IOServiceGetMatchingServices(masterPort,
81			classesToMatch, &allCDs) != KERN_SUCCESS )
82			{
83			D(bug("IOServiceGetMatchingServices failed. No CD media drives found?\n"));
84			return;
85			}
86
87
88			// Iterate through each CD drive
89			while ( nextCD = IOIteratorNext(allCDs))
90			{
91			char bsdPath[MAXPATHLEN];
92			CFTypeRef bsdPathAsCFString =
93			IORegistryEntryCreateCFProperty(nextCD, CFSTR(kIOBSDName),
94			kCFAllocatorDefault, 0);
95			*bsdPath = '\0';
96			if ( bsdPathAsCFString )
97			{
98			size_t devPathLength;
99
100			strcpy(bsdPath, "/dev/");
101			devPathLength = strlen(bsdPath);
102
103			if ( CFStringGetCString((const __CFString *)bsdPathAsCFString,
104			bsdPath + devPathLength,
105			MAXPATHLEN - devPathLength,
106			kCFStringEncodingASCII) )
107			{
108			// If we try to do raw reads on the file bsdPath (e.g. /dev/disk5),
109			// we get a lot of extra padding in the data. For some reason,
110			// the device we need has a different name (e.g. /dev/disk5s1)
111			//strcat(bsdPath, "s1");
112			D(bug("CDROM BSD path: %s\n", bsdPath));
113			}
114			else
115			D(bug("Could not get BSD device path for CD\n"));
116
117			CFRelease(bsdPathAsCFString);
118			}
119
120			PrefsAddString("cdrom", bsdPath);
121			}
122
123			IOObjectRelease(nextCD);
124			IOObjectRelease(allCDs);
125			}
126
127
128			#ifdef MAC_OS_X_VERSION_10_2
129			/*
130			* Read CD-ROM TOC (binary MSF format, 804 bytes max.)
131			*/
132
133			bool DarwinCDReadTOC(char name, uint8 toc)
134			{
135			char c, devname;
136			int fd;
137
138
139			// The open filehandle is something like /dev/disk5s1
140			// The DKIOCCDREADTOC ioctl needs the original cd file,
141			// so we strip the s1 suffix off it, and open the file just for this ioctl
142
143			devname = strdup(name);
144			if ( ! devname )
145			return false;
146
147			for ( c = devname; *c; ++c ) ; // Go to the end of the name,
148			--c, --c; // point to the 's1' on the end,
149			*c = '\0'; // and truncate the string
150
151			fd = open(devname, O_RDONLY);
152			if ( ! fd )
153			{
154			printf("Failed to open CD device %s for ioctl\n", devname);
155			free(devname);
156			return false;
157			}
158
159			D(bug("Opened %s for ioctl()\n", devname));
160
161			dk_cd_read_toc_t TOCrequest;
162
163			// Setup the ioctl request structure:
164
165			memset(&TOCrequest, 0, sizeof(TOCrequest));
166			TOCrequest.buffer = toc;
167			TOCrequest.bufferLength = 804;
168			TOCrequest.formatAsTime = kCDTrackInfoAddressTypeTrackNumber;
169
170			if ( ioctl(fd, DKIOCCDREADTOC, &TOCrequest) < 0 )
171			{
172			printf("ioctl(DKIOCCDREADTOC) failed: %s\n", strerror(errno));
173			close(fd);
174			free(devname);
175			return false;
176			}
177			if ( TOCrequest.bufferLength < sizeof(CDTOC) )
178			{
179			printf("ioctl(DKIOCCDREADTOC): only read %d bytes (a CDTOC is at least %d)\n",
180			TOCrequest.bufferLength, (int)sizeof(CDTOC));
181			close(fd);
182			free(devname);
183			return false;
184			}
185			D(bug("ioctl(DKIOCCDREADTOC) read %d bytes\n", TOCrequest.bufferLength));
186
187			close(fd);
188			free(devname);
189			return true;
190			}
191			#endif