| 488,128 → 488,8 |
|---|
| xor eax, eax |
| ret |
| |
| ;---------------------------------------------------------------- |
| ; |
| ; fs_CdExecute - LFN variant for executing from CD |
| ; |
| ; esi points to hd filename (e.g. 'dir1/name') |
| ; ebp points to full filename (e.g. '/hd0/1/dir1/name') |
| ; dword [ebx] = flags |
| ; dword [ebx+4] = cmdline |
| ; |
| ; ret ebx,edx destroyed |
| ; eax > 0 - PID, < 0 - error |
| ; |
| ;-------------------------------------------------------------- |
| fs_CdExecute: |
| mov edx, [ebx] |
| mov ebx, [ebx+4] |
| test ebx, ebx |
| jz @f |
| ; add ebx, std_application_base_address |
| @@: |
| |
| ;---------------------------------------------------------------- |
| ; |
| ; fs_CdExecute.flags - second entry |
| ; |
| ; esi points to floppy filename (kernel address) |
| ; ebp points to full filename |
| ; edx flags |
| ; ebx cmdline (kernel address) |
| ; |
| ; ret eax > 0 - PID, < 0 - error |
| ; |
| ;-------------------------------------------------------------- |
| |
| .flags: |
| cmp byte [esi], 0 |
| jnz @f |
| ; cannot execute root! |
| mov eax, -ERROR_ACCESS_DENIED |
| ret |
| @@: |
| push edi |
| call cd_find_lfn |
| jnc .found |
| pop edi |
| mov eax, -ERROR_FILE_NOT_FOUND |
| cmp [DevErrorCode], 0 |
| jz @f |
| mov al, -11 |
| @@: |
| ret |
| .found: |
| mov edi,[cd_current_pointer_of_input] |
| mov eax,[edi+2] |
| push 0 |
| push eax |
| push dword [edi+10] ; size |
| push .DoRead |
| call fs_execute |
| add esp, 16 |
| pop edi |
| ret |
| |
| .DoRead: |
| ; read next block |
| ; in: eax->parameters, edi->buffer |
| ; out: eax = error code |
| pushad |
| cmp dword [eax], 0 ; file size |
| jz .eof |
| cmp [eax+8],dword 0 |
| jne @f |
| mov ecx,[eax+4] |
| inc dword [eax+4] |
| mov [CDSectorAddress],ecx |
| mov [CDDataBuf_pointer],CDDataBuf ;edi |
| call ReadCDWRetr |
| cmp [DevErrorCode], 0 |
| jnz .err |
| @@: |
| push esi edi ecx |
| mov esi,512 |
| imul esi,[eax+8] |
| add esi,CDDataBuf |
| mov ecx,512/4 |
| cld |
| rep movsd |
| pop ecx edi esi |
| |
| mov eax, [esp+28] |
| mov ecx, [eax] |
| sub ecx, 512 |
| jae @f |
| lea edi, [edi+ecx+512] |
| neg ecx |
| push eax |
| xor eax, eax |
| rep stosb |
| pop eax |
| @@: |
| mov [eax], ecx |
| mov edx, [eax+8] |
| inc edx |
| cmp edx, 4 ; 2048/512=4 |
| jb @f |
| xor edx, edx |
| @@: |
| mov [eax+8], edx |
| popad |
| xor eax, eax |
| ret |
| .eof: |
| popad |
| mov eax, 6 |
| ret |
| .err: |
| popad |
| mov eax, 11 |
| ret |
| |
| cd_find_lfn: |
| ; in: esi->name |
| ; in: esi+ebp -> name |
| ; out: CF=1 - file not found |
| ; else CF=0 and [cd_current_pointer_of_input] direntry |
| push eax esi |
| 669,6 → 549,7 |
|---|
| ; êîíåö ïóòè ôàéëà |
| cmp byte [esi-1], 0 |
| jz .done |
| .nested: |
| mov eax,[cd_current_pointer_of_input] |
| push dword [eax+2] |
| pop dword [CDSectorAddress] ; íà÷àëî äèðåêòîðèè |
| 676,6 → 557,12 |
|---|
| jmp .mainloop |
| ; óêàçàòåëü ôàéëà íàéäåí |
| .done: |
| test ebp, ebp |
| jz @f |
| mov esi, ebp |
| xor ebp, ebp |
| jmp .nested |
| @@: |
| pop esi eax |
| clc |
| ret |