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/* |
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* sys_windows.cpp - System dependent routines, Windows implementation |
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* |
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* Basilisk II (C) 1997-2004 Christian Bauer |
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* Basilisk II (C) 1997-2005 Christian Bauer |
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* |
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* This program is free software; you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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#include "debug.h" |
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// Supported media types |
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enum { |
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MEDIA_FLOPPY = 1, |
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MEDIA_CD = 2, |
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MEDIA_HD = 4, |
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MEDIA_REMOVABLE = MEDIA_FLOPPY | MEDIA_CD |
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}; |
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|
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// File handles are pointers to these structures |
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struct file_handle { |
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char *name; // Copy of device/file name |
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bool is_media_present; |
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}; |
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|
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// Open file handles |
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struct open_file_handle { |
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file_handle *fh; |
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open_file_handle *next; |
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}; |
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static open_file_handle *open_file_handles = NULL; |
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|
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// File handle of first floppy drive (for SysMountFirstFloppy()) |
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static file_handle *first_floppy = NULL; |
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static const int CD_READ_AHEAD_SECTORS = 16; |
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static char *sector_buffer = NULL; |
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// Prototypes |
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static bool is_cdrom_readable(file_handle *fh); |
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/* |
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* Initialization |
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/* |
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* Manage open file handles |
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*/ |
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|
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static void sys_add_file_handle(file_handle *fh) |
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{ |
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open_file_handle *p = new open_file_handle; |
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p->fh = fh; |
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p->next = open_file_handles; |
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open_file_handles = p; |
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} |
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|
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static void sys_remove_file_handle(file_handle *fh) |
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{ |
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open_file_handle *p = open_file_handles; |
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open_file_handle *q = NULL; |
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|
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while (p) { |
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if (p->fh == fh) { |
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if (q) |
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q->next = p->next; |
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else |
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open_file_handles = p->next; |
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delete p; |
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break; |
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} |
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q = p; |
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p = p->next; |
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} |
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} |
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|
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|
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/* |
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* Mount removable media now |
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*/ |
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|
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void mount_removable_media(int media) |
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{ |
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for (open_file_handle *p = open_file_handles; p != NULL; p = p->next) { |
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file_handle * const fh = p->fh; |
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|
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if (fh->is_cdrom && (media & MEDIA_CD)) { |
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cache_clear(&fh->cache); |
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fh->start_byte = 0; |
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|
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if (fh->fh && fh->fh != INVALID_HANDLE_VALUE) |
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CloseHandle(fh->fh); |
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|
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// Re-open device |
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char device_name[MAX_PATH]; |
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sprintf(device_name, "\\\\.\\%c:", fh->name[0]); |
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fh->fh = CreateFile( |
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device_name, |
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GENERIC_READ, |
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FILE_SHARE_READ | FILE_SHARE_WRITE, |
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NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL); |
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|
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if (fh->fh != INVALID_HANDLE_VALUE) { |
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fh->is_media_present = is_cdrom_readable(fh); |
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if (fh->is_media_present) |
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MountVolume(fh); |
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} else { |
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fh->is_media_present = false; |
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} |
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} |
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} |
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} |
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|
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|
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/* |
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* Account for media that has just arrived |
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*/ |
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|
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void SysMediaArrived(void) |
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{ |
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mount_removable_media(MEDIA_REMOVABLE); |
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} |
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|
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/* |
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* Account for media that has just been removed |
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*/ |
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|
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void SysMediaRemoved(void) |
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{ |
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} |
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/* |
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* Mount first floppy disk |
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*/ |
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fh->start_byte = 0; |
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fh->is_floppy = false; |
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fh->is_cdrom = true; |
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memset(&fh->cache, 0, sizeof(cachetype)); |
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cache_init(&fh->cache); |
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cache_clear(&fh->cache); |
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if (!PrefsFindBool("nocdrom")) |
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fh->is_media_present = is_cdrom_readable(fh); |
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} |
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if (fh->is_floppy && first_floppy == NULL) |
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first_floppy = fh; |
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if (fh) |
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sys_add_file_handle(fh); |
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return fh; |
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} |
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if (!fh) |
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return; |
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sys_remove_file_handle(fh); |
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if (fh->is_cdrom) { |
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cache_final(&fh->cache); |
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SysAllowRemoval((void *)fh); |