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File system: new function 70.4 to set file size

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Graphics: fixed error when putimage and drawrect do not draw pixels
          on right and bottom window sides
Processes: fixed kernel fault when program to load is too big
Programs: EYES: now it works with new kernel (rev. 130). Size optimization.
                Blinking deleted.

git-svn-id: svn://kolibrios.org@133 a494cfbc-eb01-0410-851d-a64ba20cac60
This commit is contained in:
Evgeny Grechnikov (Diamond)
2006-08-21 13:06:02 +00:00
parent 8df5cba38d
commit ec76c66cd2
19 changed files with 1571 additions and 1239 deletions
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124
kernel/trunk/blkdev/rd.inc
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@@ -1874,11 +1874,7 @@ fs_RamdiskWrite:
.l1:
; now edi points to direntry, ebx=start byte to write,
; ecx=number of bytes to write, edx=data pointer
call get_time_for_file
mov [edi+22], ax ; last write time
call get_date_for_file
mov [edi+24], ax ; last write date
mov [edi+18], ax ; last access date
call fat_update_datetime
; extend file if needed
add ecx, ebx
@@ -1948,7 +1944,7 @@ ramdisk_extend_file.zero_size:
; extends file on ramdisk to given size, new data area is filled by 0
; in: edi->direntry, ecx=new size
; out: CF=0 => OK, eax destroyed
; out: CF=0 => OK, eax=0
; CF=1 => error, eax=code (ERROR_FAT_TABLE or ERROR_DISK_FULL)
ramdisk_extend_file:
push ecx
@@ -2036,7 +2032,7 @@ ramdisk_extend_file:
.extend_done:
mov [edi+28], ecx
pop esi edx
clc
xor eax, eax ; CF=0
ret
.disk_full:
pop edi ecx
@@ -2046,6 +2042,120 @@ ramdisk_extend_file:
pop eax
ret
fat_update_datetime:
call get_time_for_file
mov [edi+22], ax ; last write time
call get_date_for_file
mov [edi+24], ax ; last write date
mov [edi+18], ax ; last access date
ret
;----------------------------------------------------------------
;
; fs_RamdiskSetFileEnd - set end of file on ramdisk
;
; esi points to filename
; ebx points to 64-bit number = new file size
; ecx ignored (reserved)
; edx ignored (reserved)
;
; ret eax = 0 ok or other = errormsg
;
;--------------------------------------------------------------
fs_RamdiskSetFileEnd:
cmp byte [esi], 0
jnz @f
.access_denied:
push ERROR_ACCESS_DENIED
jmp .ret
@@:
push edi
call rd_find_lfn
jnc @f
pop edi
push ERROR_FILE_NOT_FOUND
.ret:
pop eax
ret
@@:
; must not be directory
test byte [edi+11], 10h
jz @f
pop edi
jmp .access_denied
@@:
; file size must not exceed 4Gb
cmp dword [ebx+4], 0
jz @f
pop edi
push ERROR_END_OF_FILE
jmp .ret
@@:
; set file modification date/time to current
call fat_update_datetime
mov eax, [ebx]
cmp eax, [edi+28]
jb .truncate
ja .expand
pop edi
xor eax, eax
ret
.expand:
push ecx
mov ecx, eax
call ramdisk_extend_file
pop ecx
pop edi
ret
.truncate:
mov [edi+28], eax
push ecx
movzx ecx, word [edi+26]
test eax, eax
jz .zero_size
; find new last sector
@@:
sub eax, 0x200
jbe @f
movzx ecx, word [0x280000+ecx*2]
jmp @b
@@:
; zero data at the end of last sector
push ecx
mov edi, ecx
shl edi, 9
lea edi, [edi+0x100000+31*512+eax+0x200]
mov ecx, eax
neg ecx
xor eax, eax
rep stosb
pop ecx
; terminate FAT chain
lea ecx, [0x280000+ecx+ecx]
push dword [ecx]
mov word [ecx], 0xFFF
pop ecx
and ecx, 0xFFF
jmp .delete
.zero_size:
and word [edi+26], 0
.delete:
; delete FAT chain starting with ecx
; mark all clusters as free
cmp ecx, 0xFF8
jae .deleted
lea ecx, [0x280000+ecx+ecx]
push dword [ecx]
and word [ecx], 0
pop ecx
and ecx, 0xFFF
jmp .delete
.deleted:
pop ecx
pop edi
xor eax, eax
ret
fs_RamdiskGetFileInfo:
cmp byte [esi], 0
jnz @f