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;; Copyright (C) KolibriOS team 2011-2012. All rights reserved. ;;
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;; Copyright (C) KolibriOS team 2011-2012. All rights reserved. ;;
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;; Distributed under terms of the GNU General Public License    ;;
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;; Distributed under terms of the GNU General Public License    ;;
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;;                                                              ;;
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;;                                                              ;;
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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$Revision: 3913 $
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$Revision: 4273 $
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; =============================================================================
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; =============================================================================
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; ================================= Constants =================================
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; ================================= Constants =================================
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; Currently this is just placeholder, since no file systems are supported.
 1211 
; Currently this is just placeholder, since no file systems are supported.
1212 
; edi = esp -> {dd fs_dyndisk, dd dyndisk_cleanup, dd pointer to DISK, dd media object}
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; edi = esp -> {dd fs_dyndisk, dd dyndisk_cleanup, dd pointer to DISK, dd media object}
1213 
; ecx = partition number, esi+ebp = ASCIIZ name
 1213 
; ecx = partition number, esi+ebp = ASCIIZ name
1214 
fs_dyndisk:
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fs_dyndisk:
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        dec     ecx     ; convert to zero-based partition index
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        dec     ecx     ; convert to zero-based partition index
1216 
        pop     edx edx edx eax ; edx = pointer to DISK, eax = NULL or edx
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        pop     edx edx edx ; edx = pointer to DISK, dword [esp] = NULL or edx
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; If the driver does not support insert notifications and we are the only fs
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; operation with this disk, ask the driver whether the media
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; was inserted/removed/changed. Otherwise, assume that media status is valid.
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        test    byte [edx+DISK.DriverFlags], DISK_NO_INSERT_NOTIFICATION
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        jz      .media_accurate
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        push    ecx esi
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        mov     esi, edx
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        cmp     dword [esp+8], 0
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 1225 
        jz      .test_no_media
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 1226 
        cmp     [esi+DISK.MediaRefCount], 2
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 1227 
        jnz     .media_accurate_pop
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        lea     edx, [esi+DISK.MediaInfo]
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 1229 
        and     [edx+DISKMEDIAINFO.Flags], 0
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 1230 
        mov     al, DISKFUNC.querymedia
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 1231 
        stdcall disk_call_driver, edx
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 1232 
        test    eax, eax
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 1233 
        jz      .media_accurate_pop
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 1234 
        stdcall disk_media_dereference  ; drop our reference so that disk_media_changed could close the media
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 1235 
        stdcall disk_media_changed, esi, 0
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        and     dword [esp+8], 0        ; no media
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 1237 
.test_no_media:
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 1238 
        stdcall disk_media_changed, esi, 1      ; issue fake notification
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                ; if querymedia() inside disk_media_changed returns error, the notification is ignored
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 1240 
        cmp     [esi+DISK.MediaInserted], 0
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 1241 
        jz      .media_accurate_pop
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 1242 
        lock inc [esi+DISK.MediaRefCount]
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 1243 
        mov     dword [esp+8], esi
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 1244 
.media_accurate_pop:
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 1245 
        mov     edx, esi
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 1246 
        pop     esi ecx
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 1247 
.media_accurate:
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 1248 
        pop     eax
1217 
        test    eax, eax
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        test    eax, eax
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        jz      .nomedia
 1250 
        jz      .nomedia
1219 
.main:
 1251 
.main:
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        cmp     ecx, [edx+DISK.NumPartitions]
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        cmp     ecx, [edx+DISK.NumPartitions]
1221 
        jae     .notfound
 1253 
        jae     .notfound
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        mov     dword [esp+32], ERROR_UNSUPPORTED_FS
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        mov     dword [esp+32], ERROR_UNSUPPORTED_FS
1251 
        jmp     .cleanup
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        jmp     .cleanup
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.nomedia:
 1284 
.nomedia:
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        test    ecx, ecx
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        test    ecx, ecx
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        jnz     .notfound
 1286 
        jnz     .notfound
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        test    byte [edx+DISK.DriverFlags], DISK_NO_INSERT_NOTIFICATION
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1256 
        jz      .deverror
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1257 
; if the driver does not support insert notifications and we are the only fs
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1258 
; operation with this disk, issue the fake insert notification; if media is
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1259 
; still not inserted, 'disk_media_changed' will detect this and do nothing
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1260 
        lea     ecx, [edx+DISK.MediaLock]
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1261 
        call    mutex_lock
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1262 
        cmp     [edx+DISK.MediaRefCount], 1
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1263 
        jnz     .noluck
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1264 
        call    mutex_unlock
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1265 
        push    edx
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1266 
        stdcall disk_media_changed, edx, 1
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1267 
        pop     edx
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1268 
        lea     ecx, [edx+DISK.MediaLock]
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1269 
        call    mutex_lock
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1270 
        cmp     [edx+DISK.MediaInserted], 0
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1271 
        jz      .noluck
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1272 
        lock inc [edx+DISK.MediaRefCount]
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1273 
        call    mutex_unlock
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1274 
        xor     ecx, ecx
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1275 
        jmp     .main
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1276 
.noluck:
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1277 
        call    mutex_unlock
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1278 
.deverror:
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1279 
        mov     dword [esp+32], ERROR_DEVICE
 1287 
        mov     dword [esp+32], ERROR_DEVICE
1280 
        mov     esi, edx
 1288 
        mov     esi, edx
1281 
        call    disk_dereference
 1289 
        call    disk_dereference
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        ret
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        ret