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Comparing BasiliskII/src/Unix/sys_unix.cpp (file contents):
Revision 1.24 by gbeauche, 2005-01-30T21:42:14Z vs.
Revision 1.30 by gbeauche, 2008-01-01T09:40:33Z

#	Line 1 | Line 1
1		/*
2		*  sys_unix.cpp - System dependent routines, Unix implementation
3		*
4	<	*  Basilisk II (C) 1997-2005 Christian Bauer
4	>	*  Basilisk II (C) 1997-2008 Christian Bauer
5		*
6		*  This program is free software; you can redistribute it and/or modify
7		*  it under the terms of the GNU General Public License as published by
#	Line 34 | Line 34
34		#include <linux/fd.h>
35		#include <linux/major.h>
36		#include <linux/kdev_t.h>
37	–	#include <linux/unistd.h>
37		#include <dirent.h>
39	–
40	–	#ifdef __NR__llseek
41	–	_syscall5(int, _llseek, unsigned int, fd, unsigned long, hi, unsigned long, lo, loff_t *, res, unsigned int, wh);
42	–	#else
43	–	static int _llseek(unsigned int fd, unsigned long hi, unsigned long lo, loff_t *res, unsigned int wh)
44	–	{
45	–	if (hi)
46	–	return -1;
47	–	*res = lseek(fd, lo, wh);
48	–	if (*res == -1)
49	–	return -1;
50	–	return 0;
51	–	}
52	–	#endif
38		#endif
39
40		#if defined(__FreeBSD__) || defined(__NetBSD__)
41		#include <sys/cdio.h>
42		#endif
43
44	+	#if defined __APPLE__ && defined __MACH__
45	+	#include <sys/disk.h>
46	+	#if (defined AQUA || defined HAVE_FRAMEWORK_COREFOUNDATION)
47	+	#ifndef __MACOSX__
48	+	#define __MACOSX__ MAC_OS_X_VERSION_MIN_REQUIRED
49	+	#endif
50	+	#endif
51	+	#endif
52	+
53		#include "main.h"
54		#include "macos_util.h"
55		#include "prefs.h"
#	Line 68 | Line 62 | static int _llseek(unsigned int fd, unsi
62
63		// File handles are pointers to these structures
64		struct file_handle {
65	<	char *name;             // Copy of device/file name
65	>	char *name;                     // Copy of device/file name
66		int fd;
67		bool is_file;           // Flag: plain file or /dev/something?
68		bool is_floppy;         // Flag: floppy device
#	Line 76 | Line 70 | struct file_handle {
70		bool read_only;         // Copy of Sys_open() flag
71		loff_t start_byte;      // Size of file header (if any)
72		loff_t file_size;       // Size of file data (only valid if is_file is true)
73	+	bool is_media_present;          // Flag: media is inserted and available
74
75		#if defined(__linux__)
76		int cdrom_cap;          // CD-ROM capability flags (only valid if is_cdrom is true)
#	Line 87 | Line 82 | struct file_handle {
82		#endif
83		};
84
85	+	// Open file handles
86	+	struct open_file_handle {
87	+	file_handle *fh;
88	+	open_file_handle *next;
89	+	};
90	+	static open_file_handle *open_file_handles = NULL;
91	+
92		// File handle of first floppy drive (for SysMountFirstFloppy())
93		static file_handle *first_floppy = NULL;
94
95	+	// Prototypes
96	+	static void cdrom_close(file_handle *fh);
97	+	static bool cdrom_open(file_handle *fh, const char *path = NULL);
98	+
99
100		/*
101		*  Initialization
#	Line 97 | Line 103 | static file_handle *first_floppy = NULL;
103
104		void SysInit(void)
105		{
106	+	#if defined __MACOSX__
107	+	extern void DarwinSysInit(void);
108	+	DarwinSysInit();
109	+	#endif
110		}
111
112
#	Line 106 | Line 116 | void SysInit(void)
116
117		void SysExit(void)
118		{
119	+	#if defined __MACOSX__
120	+	extern void DarwinSysExit(void);
121	+	DarwinSysExit();
122	+	#endif
123	+	}
124	+
125	+
126	+	/*
127	+	*  Manage open file handles
128	+	*/
129	+
130	+	static void sys_add_file_handle(file_handle *fh)
131	+	{
132	+	open_file_handle *p = new open_file_handle;
133	+	p->fh = fh;
134	+	p->next = open_file_handles;
135	+	open_file_handles = p;
136	+	}
137	+
138	+	static void sys_remove_file_handle(file_handle *fh)
139	+	{
140	+	open_file_handle *p = open_file_handles;
141	+	open_file_handle *q = NULL;
142	+
143	+	while (p) {
144	+	if (p->fh == fh) {
145	+	if (q)
146	+	q->next = p->next;
147	+	else
148	+	open_file_handles = p->next;
149	+	delete p;
150	+	break;
151	+	}
152	+	q = p;
153	+	p = p->next;
154	+	}
155	+	}
156	+
157	+
158	+	/*
159	+	*  Account for media that has just arrived
160	+	*/
161	+
162	+	void SysMediaArrived(const char *path, int type)
163	+	{
164	+	// Replace the "cdrom" entry (we are polling, it's unique)
165	+	if (type == MEDIA_CD && !PrefsFindBool("nocdrom"))
166	+	PrefsReplaceString("cdrom", path);
167	+
168	+	// Wait for media to be available for reading
169	+	if (open_file_handles) {
170	+	const int MAX_WAIT = 5;
171	+	for (int i = 0; i < MAX_WAIT; i++) {
172	+	if (access(path, R_OK) == 0)
173	+	break;
174	+	switch (errno) {
175	+	case ENOENT: // Unlikely
176	+	case EACCES: // MacOS X is mounting the media
177	+	sleep(1);
178	+	continue;
179	+	}
180	+	printf("WARNING: Cannot access %s (%s)\n", path, strerror(errno));
181	+	return;
182	+	}
183	+	}
184	+
185	+	for (open_file_handle *p = open_file_handles; p != NULL; p = p->next) {
186	+	file_handle * const fh = p->fh;
187	+
188	+	// Re-open CD-ROM device
189	+	if (fh->is_cdrom && type == MEDIA_CD) {
190	+	cdrom_close(fh);
191	+	if (cdrom_open(fh, path)) {
192	+	fh->is_media_present = true;
193	+	MountVolume(fh);
194	+	}
195	+	}
196	+	}
197	+	}
198	+
199	+
200	+	/*
201	+	*  Account for media that has just been removed
202	+	*/
203	+
204	+	void SysMediaRemoved(const char *path, int type)
205	+	{
206	+	if ((type & MEDIA_REMOVABLE) != MEDIA_CD)
207	+	return;
208	+
209	+	for (open_file_handle *p = open_file_handles; p != NULL; p = p->next) {
210	+	file_handle * const fh = p->fh;
211	+
212	+	// Mark media as not available
213	+	if (!fh->is_cdrom || !fh->is_media_present)
214	+	continue;
215	+	if (fh->name && strcmp(fh->name, path) == 0) {
216	+	fh->is_media_present = false;
217	+	break;
218	+	}
219	+	#if defined __MACOSX__
220	+	if (fh->ioctl_name && strcmp(fh->ioctl_name, path) == 0) {
221	+	fh->is_media_present = false;
222	+	break;
223	+	}
224	+	#endif
225	+	}
226		}
227
228
#	Line 128 | Line 245 | void SysMountFirstFloppy(void)
245		void SysAddFloppyPrefs(void)
246		{
247		#if defined(__linux__)
248	<	if (access("/dev/.devfsd", F_OK) < 0) {
249	<	PrefsAddString("floppy", "/dev/fd0u1440");
250	<	PrefsAddString("floppy", "/dev/fd1u1440");
251	<	} else {
252	<	DIR *fd_dir = opendir("/dev/floppy");
253	<	if (fd_dir) {
254	<	struct dirent *floppy_dev;
255	<	while ((floppy_dev = readdir(fd_dir)) != NULL) {
139	<	if (strstr(floppy_dev->d_name, "u1440") != NULL) {
140	<	char fd_dev[20];
141	<	sprintf(fd_dev, "/dev/floppy/%s", floppy_dev->d_name);
142	<	PrefsAddString("floppy", fd_dev);
143	<	}
248	>	DIR *fd_dir = opendir("/dev/floppy");
249	>	if (fd_dir) {
250	>	struct dirent *floppy_dev;
251	>	while ((floppy_dev = readdir(fd_dir)) != NULL) {
252	>	if (strstr(floppy_dev->d_name, "u1440") != NULL) {
253	>	char fd_dev[20];
254	>	sprintf(fd_dev, "/dev/floppy/%s", floppy_dev->d_name);
255	>	PrefsAddString("floppy", fd_dev);
256		}
145	–	closedir(fd_dir);
257		}
258	+	closedir(fd_dir);
259	+	} else {
260	+	PrefsAddString("floppy", "/dev/fd0");
261	+	PrefsAddString("floppy", "/dev/fd1");
262		}
263		#elif defined(__NetBSD__)
264		PrefsAddString("floppy", "/dev/fd0a");
265		PrefsAddString("floppy", "/dev/fd1a");
266		#elif defined(__APPLE__) && defined(__MACH__)
267	<	#if defined(AQUA) || defined(HAVE_FRAMEWORK_IOKIT)
267	>	#if defined(AQUA) || defined(HAVE_FRAMEWORK_COREFOUNDATION)
268		extern  void DarwinAddFloppyPrefs(void);
269
270		DarwinAddFloppyPrefs();
#	Line 228 | Line 343 | void SysAddCDROMPrefs(void)
343		closedir(cd_dir);
344		}
345		}
346	<	#elif defined(__APPLE__) && defined(__MACH__)
347	<	#if defined(AQUA) || defined(HAVE_FRAMEWORK_IOKIT)
348	<	extern  void DarwinAddCDROMPrefs(void);
349	<
350	<	DarwinAddCDROMPrefs();
351	<	#else
237	<	// Until I can convince the other guys that my Darwin code is useful,
238	<	// we just do nothing (it is safe to have no cdrom device)
239	<	#endif
346	>	#elif defined __MACOSX__
347	>	// There is no predefined path for CD-ROMs on MacOS X. Rather, we
348	>	// define a single fake CD-ROM entry for the emulated MacOS.
349	>	// XXX this means we handle only CD-ROM drive at a time, wherever
350	>	// the disk is, the latest one is used.
351	>	PrefsAddString("cdrom", "/dev/poll/cdrom");
352		#elif defined(__FreeBSD__) || defined(__NetBSD__)
353		PrefsAddString("cdrom", "/dev/cd0c");
354		#endif
#	Line 264 | Line 376 | void SysAddSerialPrefs(void)
376		PrefsAddString("seriala", "/dev/tty00");
377		PrefsAddString("serialb", "/dev/tty01");
378		#elif defined(__APPLE__) && defined(__MACH__)
379	<	#if defined(AQUA) || defined(HAVE_FRAMEWORK_IOKIT)
379	>	#if defined(AQUA) || defined(HAVE_FRAMEWORK_COREFOUNDATION)
380		extern  void DarwinAddSerialPrefs(void);
381
382		DarwinAddSerialPrefs();
#	Line 279 | Line 391 | void SysAddSerialPrefs(void)
391
392
393		/*
394	+	*  Open CD-ROM device and initialize internal data
395	+	*/
396	+
397	+	static bool cdrom_open_1(file_handle *fh)
398	+	{
399	+	#if defined __MACOSX__
400	+	// In OS X, the device name is OK for sending ioctls to,
401	+	// but not for reading raw CDROM data from.
402	+	// (it seems to have extra data padded in)
403	+	//
404	+	// So, we keep the already opened file handle,
405	+	// and open a slightly different file for CDROM data
406	+	//
407	+	fh->ioctl_fd = fh->fd;
408	+	fh->ioctl_name = fh->name;
409	+	fh->fd = -1;
410	+	fh->name = (char *)malloc(strlen(fh->ioctl_name) + 3);
411	+	if (fh->name) {
412	+	strcpy(fh->name, fh->ioctl_name);
413	+	strcat(fh->name, "s1");
414	+	fh->fd = open(fh->name, O_RDONLY, O_NONBLOCK);
415	+	}
416	+	if (fh->ioctl_fd < 0)
417	+	return false;
418	+	#endif
419	+	return true;
420	+	}
421	+
422	+	bool cdrom_open(file_handle *fh, const char *path)
423	+	{
424	+	if (path)
425	+	fh->name = strdup(path);
426	+	fh->fd = open(fh->name, O_RDONLY, O_NONBLOCK);
427	+	fh->start_byte = 0;
428	+	if (!cdrom_open_1(fh))
429	+	return false;
430	+	return fh->fd >= 0;
431	+	}
432	+
433	+
434	+	/*
435	+	*  Close a CD-ROM device
436	+	*/
437	+
438	+	void cdrom_close(file_handle *fh)
439	+	{
440	+	if (fh->fd >= 0) {
441	+	close(fh->fd);
442	+	fh->fd = -1;
443	+	}
444	+	if (fh->name) {
445	+	free(fh->name);
446	+	fh->name = NULL;
447	+	}
448	+	#if defined __MACOSX__
449	+	if (fh->ioctl_fd >= 0) {
450	+	close(fh->ioctl_fd);
451	+	fh->ioctl_fd = -1;
452	+	}
453	+	if (fh->ioctl_name) {
454	+	free(fh->ioctl_name);
455	+	fh->ioctl_name = NULL;
456	+	}
457	+	#endif
458	+	}
459	+
460	+
461	+	/*
462		*  Check if device is a mounted HFS volume, get mount name
463		*/
464
#	Line 325 | Line 505 | void *Sys_open(const char *name, bool re
505		#else
506		bool is_cdrom = strncmp(name, "/dev/cd", 7) == 0;
507		#endif
508	+	bool is_floppy = strncmp(name, "/dev/fd", 7) == 0;
509
510	<	#if defined(__APPLE__) && defined(__MACH__)
511	<	//
510	>	bool is_polled_media = strncmp(name, "/dev/poll/", 10) == 0;
511	>	if (is_floppy) // Floppy open fails if there's no disk inserted
512	>	is_polled_media = true;
513	>
514	>	#if defined __MACOSX__
515		// There is no set filename in /dev which is the cdrom,
516		// so we have to see if it is any of the devices that we found earlier
333	–	//
334	–	const char      *cdrom;
335	–	int                     tmp = 0;
336	–
337	–	while ( (cdrom = PrefsFindString("cdrom", tmp) ) != NULL )
517		{
518	<	if ( strcmp(name, cdrom) == 0 )
519	<	{
520	<	is_cdrom = 1;
521	<	read_only = 1;
522	<	break;
518	>	int index = 0;
519	>	const char *str;
520	>	while ((str = PrefsFindString("cdrom", index++)) != NULL) {
521	>	if (is_polled_media || strcmp(str, name) == 0) {
522	>	is_cdrom = true;
523	>	read_only = true;
524	>	break;
525	>	}
526		}
345	–	++tmp;
527		}
528		#endif
529
#	Line 367 | Line 548 | void *Sys_open(const char *name, bool re
548		}
549
550		// Open file/device
551	<	#if defined(__linux__) || defined(__FreeBSD__) || defined(__NetBSD__)
551	>	#if defined(__linux__) || defined(__FreeBSD__) || defined(__NetBSD__) || defined(__MACOSX__)
552		int fd = open(name, (read_only ? O_RDONLY : O_RDWR) | (is_cdrom ? O_NONBLOCK : 0));
553		#else
554		int fd = open(name, read_only ? O_RDONLY : O_RDWR);
#	Line 377 | Line 558 | void *Sys_open(const char *name, bool re
558		read_only = true;
559		fd = open(name, O_RDONLY);
560		}
561	<	if (fd >= 0) {
561	>	if (fd >= 0 || is_polled_media) {
562		file_handle *fh = new file_handle;
563		fh->name = strdup(name);
564		fh->fd = fd;
565		fh->is_file = is_file;
566		fh->read_only = read_only;
567		fh->start_byte = 0;
568	<	fh->is_floppy = false;
569	<	fh->is_cdrom = false;
568	>	fh->is_floppy = is_floppy;
569	>	fh->is_cdrom = is_cdrom;
570	>	fh->is_media_present = false;
571	>	#if defined __MACOSX__
572	>	fh->ioctl_fd = -1;
573	>	fh->ioctl_name = NULL;
574	>	#endif
575		if (fh->is_file) {
576	+	fh->is_media_present = true;
577		// Detect disk image file layout
578		loff_t size = 0;
392	–	#if defined(__linux__)
393	–	_llseek(fh->fd, 0, 0, &size, SEEK_END);
394	–	#else
579		size = lseek(fd, 0, SEEK_END);
396	–	#endif
580		uint8 data[256];
581		lseek(fd, 0, SEEK_SET);
582		read(fd, data, 256);
#	Line 401 | Line 584 | void *Sys_open(const char *name, bool re
584		} else {
585		struct stat st;
586		if (fstat(fd, &st) == 0) {
587	+	fh->is_media_present = true;
588		if (S_ISBLK(st.st_mode)) {
589		fh->is_cdrom = is_cdrom;
590		#if defined(__linux__)
#	Line 428 | Line 612 | void *Sys_open(const char *name, bool re
612		fh->is_floppy = ((st.st_rdev >> 16) == 2);
613		#endif
614		}
615	<	#if defined(__APPLE__) && defined(__MACH__)
616	<
617	<	// In OS X, the device name is OK for sending ioctls to,
618	<	// but not for reading raw CDROM data from.
619	<	// (it seems to have extra data padded in)
620	<	//
437	<	// So, we keep the already opened fiole handle,
438	<	// and open a slightly different file for CDROM data
439	<	//
440	<	if ( is_cdrom )
441	<	{
442	<	fh->ioctl_name  = fh->name;
443	<	fh->ioctl_fd    = fh->fd;
444	<
445	<	fh->name = (char *) malloc(strlen(name) + 2);
446	<	if ( fh->name )
447	<	{
448	<	*fh->name = '\0';
449	<	strcat(fh->name, name);
450	<	strcat(fh->name, "s1");
451	<	fh->fd = open(fh->name, (read_only ? O_RDONLY : O_RDWR));
452	<	if ( fh->fd < 0 ) {
453	<	printf("WARNING: Cannot open %s (%s)\n",
454	<	fh->name, strerror(errno));
455	<	return NULL;
456	<	}
457	<	}
615	>	#if defined __MACOSX__
616	>	if (is_cdrom) {
617	>	fh->is_cdrom = true;
618	>	fh->is_floppy = false;
619	>	if (cdrom_open_1(fh))
620	>	fh->is_media_present = true;
621		}
622		#endif
623		}
624		}
625		if (fh->is_floppy && first_floppy == NULL)
626		first_floppy = fh;
627	+	sys_add_file_handle(fh);
628		return fh;
629		} else {
630		printf("WARNING: Cannot open %s (%s)\n", name, strerror(errno));
#	Line 479 | Line 643 | void Sys_close(void *arg)
643		if (!fh)
644		return;
645
646	<	close(fh->fd);
646	>	sys_remove_file_handle(fh);
647	>
648	>	if (fh->is_cdrom)
649	>	cdrom_close(fh);
650	>	if (fh->fd >= 0)
651	>	close(fh->fd);
652		if (fh->name)
653		free(fh->name);
654		delete fh;
#	Line 498 | Line 667 | size_t Sys_read(void *arg, void *buffer,
667		return 0;
668
669		// Seek to position
501	–	#if defined(__linux__)
502	–	loff_t pos = offset + fh->start_byte, res;
503	–	if (_llseek(fh->fd, pos >> 32, pos, &res, SEEK_SET) < 0)
504	–	return 0;
505	–	#else
670		if (lseek(fh->fd, offset + fh->start_byte, SEEK_SET) < 0)
671		return 0;
508	–	#endif
672
673		// Read data
674		return read(fh->fd, buffer, length);
#	Line 524 | Line 687 | size_t Sys_write(void *arg, void *buffer
687		return 0;
688
689		// Seek to position
527	–	#if defined(__linux__)
528	–	loff_t pos = offset + fh->start_byte, res;
529	–	if (_llseek(fh->fd, pos >> 32, pos, &res, SEEK_SET) < 0)
530	–	return 0;
531	–	#else
690		if (lseek(fh->fd, offset + fh->start_byte, SEEK_SET) < 0)
691		return 0;
534	–	#endif
692
693		// Write data
694		return write(fh->fd, buffer, length);
#	Line 557 | Line 714 | loff_t SysGetFileSize(void *arg)
714		return 0;
715		D(bug(" BLKGETSIZE returns %d blocks\n", blocks));
716		return (loff_t)blocks * 512;
717	+	#elif defined __MACOSX__
718	+	uint32 block_size;
719	+	if (ioctl(fh->ioctl_fd, DKIOCGETBLOCKSIZE, &block_size) < 0)
720	+	return 0;
721	+	D(bug(" DKIOCGETBLOCKSIZE returns %lu bytes\n", (unsigned long)block_size));
722	+	uint64 block_count;
723	+	if (ioctl(fh->ioctl_fd, DKIOCGETBLOCKCOUNT, &block_count) < 0)
724	+	return 0;
725	+	D(bug(" DKIOCGETBLOCKCOUNT returns %llu blocks\n", (unsigned long long)block_count));
726	+	return block_count * block_size;
727		#else
728		return lseek(fh->fd, 0, SEEK_END) - fh->start_byte;
729		#endif
#	Line 576 | Line 743 | void SysEject(void *arg)
743
744		#if defined(__linux__)
745		if (fh->is_floppy) {
746	<	fsync(fh->fd);
747	<	ioctl(fh->fd, FDFLUSH);
748	<	ioctl(fh->fd, FDEJECT);
749	<	close(fh->fd);  // Close and reopen so the driver will see the media change
746	>	if (fh->fd >= 0) {
747	>	fsync(fh->fd);
748	>	ioctl(fh->fd, FDFLUSH);
749	>	ioctl(fh->fd, FDEJECT);
750	>	close(fh->fd);  // Close and reopen so the driver will see the media change
751	>	}
752		fh->fd = open(fh->name, fh->read_only ? O_RDONLY : O_RDWR);
753		} else if (fh->is_cdrom) {
754		ioctl(fh->fd, CDROMEJECT);
#	Line 595 | Line 764 | void SysEject(void *arg)
764		fh->fd = open(fh->name, O_RDONLY | O_NONBLOCK);
765		}
766		#elif defined(__APPLE__) && defined(__MACH__)
767	<	if ( fh->is_cdrom ) {
599	<
600	<	// Stolen from IOKit/storage/IOMediaBSDClient.h
601	<	#define DKIOCEJECT _IO('d', 21)
602	<
767	>	if (fh->is_cdrom && fh->is_media_present) {
768		close(fh->fd);
769	<	if ( ioctl(fh->ioctl_fd, DKIOCEJECT) < 0 )
770	<	{
771	<	printf("ioctl(DKIOCEJECT) failed on file %s: %s\n",
772	<	fh->ioctl_name, strerror(errno));
608	<
609	<	// If we are running OSX, the device may be is busy
610	<	// due to the Finder having the disk mounted and open,
611	<	// so we have to use another method.
612	<
613	<	// The only problem is that this takes about 5 seconds:
614	<
615	<	char    *cmd = (char *) malloc(30+sizeof(fh->name));
769	>	fh->fd = -1;
770	>	if (ioctl(fh->ioctl_fd, DKIOCEJECT) < 0) {
771	>	D(bug(" DKIOCEJECT failed on file %s: %s\n",
772	>	fh->ioctl_name, strerror(errno)));
773
774	<	if ( ! cmd )
775	<	return;
774	>	// If we are running MacOS X, the device may be in busy
775	>	// state because the Finder has mounted the disk
776		close(fh->ioctl_fd);
777	<	sprintf(cmd, "diskutil eject %s 2>&1 >/dev/null", fh->name);
777	>	fh->ioctl_fd = -1;
778	>
779	>	// Try to use "diskutil eject" but it can take up to 5
780	>	// seconds to complete
781	>	static const char eject_cmd[] = "/usr/sbin/diskutil eject %s 2>&1 >/dev/null";
782	>	char *cmd = (char *)alloca(strlen(eject_cmd) + strlen(fh->ioctl_name) + 1);
783	>	sprintf(cmd, eject_cmd, fh->ioctl_name);
784		system(cmd);
785		}
786	+	fh->is_media_present = false;
787		}
788		#endif
789		}
#	Line 652 | Line 816 | bool SysIsReadOnly(void *arg)
816
817		#if defined(__linux__)
818		if (fh->is_floppy) {
819	<	struct floppy_drive_struct stat;
820	<	ioctl(fh->fd, FDGETDRVSTAT, &stat);
821	<	return !(stat.flags & FD_DISK_WRITABLE);
819	>	if (fh->fd >= 0) {
820	>	struct floppy_drive_struct stat;
821	>	ioctl(fh->fd, FDGETDRVSTAT, &stat);
822	>	return !(stat.flags & FD_DISK_WRITABLE);
823	>	} else
824	>	return true;
825		} else
826		#endif
827		return fh->read_only;
#	Line 729 | Line 896 | bool SysIsDiskInserted(void *arg)
896		} else if (fh->is_cdrom) {
897		struct ioc_toc_header header;
898		return ioctl(fh->fd, CDIOREADTOCHEADER, &header) == 0;
899	+	#elif defined __MACOSX__
900	+	} else if (fh->is_cdrom || fh->is_floppy) {
901	+	return fh->is_media_present;
902		#endif
903
904		} else
#	Line 827 | Line 997 | bool SysCDReadTOC(void *arg, uint8 *toc)
997		*toc++ = toc_size >> 8;
998		*toc++ = toc_size & 0xff;
999		return true;
1000	<	#elif defined(__APPLE__) && defined(__MACH__) && defined(MAC_OS_X_VERSION_10_2)
1001	<	extern  bool    DarwinCDReadTOC(char *name, uint8 *toc);
1002	<
1003	<	return  DarwinCDReadTOC(fh->name, toc);
1000	>	#elif defined __MACOSX__ && defined MAC_OS_X_VERSION_10_2
1001	>	if (fh->is_media_present) {
1002	>	extern bool DarwinCDReadTOC(char *name, uint8 *toc);
1003	>	return DarwinCDReadTOC(fh->name, toc);
1004	>	}
1005	>	return false;
1006		#elif defined(__FreeBSD__)
1007		uint8 *p = toc + 2;
1008

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