forked from KolibriOS/kolibrios
[KERNEL] Added the "FsAdd" function for drivers on file systems.
TODO: added functions for lock\unlock partition and read\write sectors for user programs git-svn-id: svn://kolibrios.org@9894 a494cfbc-eb01-0410-851d-a64ba20cac60
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@ -1241,7 +1241,7 @@ end virtual
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add ebp, 8 ; ebp points to part of PARTITION structure
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xor eax, eax ; first sector of the partition
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call fs_read32_sys
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push eax
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;push eax
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; 2. Run tests for all supported filesystems. If at least one test succeeded,
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; go to 4.
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; For tests:
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@ -1249,6 +1249,22 @@ end virtual
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; [esp] = error code after bootsector read: 0 = ok, otherwise = failed,
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; ebx points to the buffer for bootsector,
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; ebx+[esi+DISK.MediaInfo.SectorSize] points to sector-sized buffer that can be used for anything.
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mov ecx, [fs_list]
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@@:
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cmp ecx, fs_list
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jz @f
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push ecx eax
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call dword[ecx + FileSystem.Creat_part]
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pop ecx
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test eax, eax
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jnz .success
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pop eax
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mov ecx, [ecx]
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jmp @b
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@@:
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push eax
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call fat_create_partition
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test eax, eax
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jnz .success
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@ -18,6 +18,21 @@ __exports:
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disk_add, 'DiskAdd', \ ;stdcall
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disk_del, 'DiskDel', \
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disk_media_changed, 'DiskMediaChanged', \ ;stdcall
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\
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fs_read32_sys, 'FsRead32Sys', \
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fs_read32_app, 'FsRead32App', \
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fs_read64_sys, 'FsRead64Sys', \
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fs_read64_app, 'FsRead64App', \
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\
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fs_write32_sys, 'FsWrite32Sys', \
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fs_write32_app, 'FsWrite32App', \
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fs_write64_sys, 'FsWrite64Sys', \
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fs_write64_app, 'FsWrite64App', \
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\
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fs_add, 'FsAdd', \
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\ ;fs_del, 'FsDel', \
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\
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disk_sync, 'DiskSync', \
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\
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create_event, 'CreateEvent', \ ; ecx, esi
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destroy_event, 'DestroyEvent', \ ;
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@ -25,6 +25,114 @@ maxPathLength = 1000h
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image_of_eax EQU esp+32
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image_of_ebx EQU esp+20
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; fs api for drivers
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struct FileSystem
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Next dd ?
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Prev dd ?
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Creat_part dd ? ; %FSNAME%_create_partition
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UserFuncs dd ? ; for fs_del
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Name rd 16 ;ascii string + \n
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ends
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fs_list:
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dd fs_list
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dd fs_list
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;.look: dd 0
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; IN: ecx = %FSNAME%_create_partition
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; edx = ptr to UserFuncs
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; [esp] = fs name
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;OUT: eax = list item
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fs_add:
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push ecx edx
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; add in fs_list
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mov eax, sizeof.FileSystem
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call malloc
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pop edx ecx
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test eax, eax
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jz .err
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mov [eax + FileSystem.Creat_part], ecx
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mov [eax + FileSystem.UserFuncs], edx
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mov edx, [esp + 4]
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mov [eax + FileSystem.Name], edx
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mov edx, eax
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cli ; DELETE
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list_add_tail edx, fs_list
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sti ; DELETE
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mov edx, ecx ; save function
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;DEBUGF 1, 'K : FS: find partition\n'
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; check all disks
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mov esi, [disk_list]
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.new_disk:
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cmp dword[esi], disk_list
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jz .end
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push edx
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mov eax, [esi + DISK.MediaInfo.SectorSize]
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shl eax, 2
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stdcall kernel_alloc, eax ;get buffer
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test eax, eax
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pop edx
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jz .end ; no memory
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mov ebx, eax
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mov ecx, [esi + DISK.NumPartitions]
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dec ecx
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shl ecx, 2 ; to dword
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add ecx, [esi + DISK.Partitions]
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@@:
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mov ebp, [ecx]
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cmp [ebp + PARTITION.FSUserFunctions], default_fs_functions
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jnz .no_fs
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;DEBUGF 1, 'K : FS: found partition\n'
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push ecx edx
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xor eax, eax ; first sector of the partition
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call fs_read32_sys
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push eax
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;DEBUGF 1, 'K : FS: call driver func = %x\n', edx
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call edx ; creat_partition
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add esp, 4
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;DEBUGF 1, 'K : FS: end call\n'
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pop edx ecx
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test eax, eax
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jz .no_fs
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; save and delete old struct
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xchg [ecx], eax
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push ecx edx
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call free
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pop edx ecx
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;DEBUGF 1, 'K : FS: set fs for partition\n'
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.no_fs:
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;sub ecx, 4
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cmp ecx, [esi + DISK.Partitions]
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lea ecx, [ecx - 4]
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jnz @b
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push edx
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stdcall kernel_free, ebx
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pop edx
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mov esi, [esi]
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jmp .new_disk
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.end:
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.err:
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ret
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; IN: ecx = list item
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;OUT: -
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;fs_del:
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;
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; ret
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; System function 70 security check
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align 4
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proc file_system_is_operation_safe stdcall, inf_struct_ptr: dword
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