| 995,7 → 995,7 |
|---|
| ret |
| |
| rd_find_lfn: |
| ; in: esi->name |
| ; in: esi+ebp -> name |
| ; out: CF=1 - file not found |
| ; else CF=0 and edi->direntry |
| push esi edi |
| 1007,6 → 1007,7 |
|---|
| jc .notfound |
| cmp byte [esi], 0 |
| jz .found |
| .continue: |
| test byte [edi+11], 10h |
| jz .notfound |
| movzx eax, word [edi+26] |
| 1020,6 → 1021,12 |
|---|
| stc |
| ret |
| .found: |
| test ebp, ebp |
| jz @f |
| mov esi, ebp |
| xor ebp, ebp |
| jmp .continue |
| @@: |
| mov eax, [esp+8] |
| add esp, 16 ; CF=0 |
| pop esi |
| 1501,8 → 1508,11 |
|---|
| cmp byte [esi], 0 |
| jz @b |
| pushad |
| xor ebp, ebp |
| xor edi, edi |
| push esi |
| test ebp, ebp |
| jz @f |
| mov esi, ebp |
| @@: |
| lodsb |
| test al, al |
| 1509,28 → 1519,42 |
|---|
| jz @f |
| cmp al, '/' |
| jnz @b |
| lea ebp, [esi-1] |
| lea edi, [esi-1] |
| jmp @b |
| @@: |
| pop esi |
| test edi, edi |
| jnz .noroot |
| test ebp, ebp |
| jnz .noroot |
| jnz .hasebp |
| push ramdisk_root_extend_dir |
| push ramdisk_root_next_write |
| push ebp |
| push edi |
| push ramdisk_root_first |
| push ramdisk_root_next |
| jmp .common1 |
| .hasebp: |
| mov eax, ERROR_ACCESS_DENIED |
| cmp byte [ebp], 0 |
| jz .ret1 |
| push ebp |
| xor ebp, ebp |
| call rd_find_lfn |
| pop esi |
| jc .notfound0 |
| jmp .common0 |
| .noroot: |
| mov eax, ERROR_ACCESS_DENIED |
| cmp byte [ebp+1], 0 |
| cmp byte [edi+1], 0 |
| jz .ret1 |
| ; check existence |
| mov byte [ebp], 0 |
| mov byte [edi], 0 |
| push edi |
| call rd_find_lfn |
| mov byte [ebp], '/' |
| lea esi, [ebp+1] |
| pop esi |
| mov byte [esi], '/' |
| jnc @f |
| .notfound0: |
| mov eax, ERROR_FILE_NOT_FOUND |
| .ret1: |
| mov [esp+28], eax |
| 1538,6 → 1562,8 |
|---|
| xor ebx, ebx |
| ret |
| @@: |
| inc esi |
| .common0: |
| test byte [edi+11], 0x10 ; must be directory |
| mov eax, ERROR_ACCESS_DENIED |
| jz .ret1 |
| 2285,97 → 2311,6 |
|---|
| |
| ;---------------------------------------------------------------- |
| ; |
| ; fs_RamdiskExecute - LFN variant for executing on sys floppy |
| ; |
| ; esi points to ramdisk filename (e.g. 'launcher') |
| ; ebp points to full filename (e.g. '/rd/1/launcher') |
| ; dword [ebx] = flags |
| ; dword [ebx+4] = cmdline |
| ; |
| ; ret ebx,edx destroyed |
| ; eax > 0 - PID, < 0 - error |
| ; |
| ;-------------------------------------------------------------- |
| fs_RamdiskExecute: |
| mov edx, [ebx] |
| mov ebx, [ebx+4] |
| test ebx, ebx |
| jz @f |
| ; add ebx, std_application_base_address |
| @@: |
| |
| ;---------------------------------------------------------------- |
| ; |
| ; fs_RamdiskExecute.flags - second entry |
| ; |
| ; esi points to ramdisk 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 rd_find_lfn |
| jnc .found |
| pop edi |
| mov eax, -ERROR_FILE_NOT_FOUND |
| ret |
| .found: |
| movzx eax, word [edi+26] ; cluster |
| push eax |
| push dword [edi+28] ; size |
| push .DoRead |
| call fs_execute |
| add esp, 12 |
| 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 |
| mov edx, [eax+4] ; cluster |
| lea esi, [edx+31] |
| shl esi, 9 |
| add esi, RAMDISK |
| mov ecx, 512/4 |
| rep movsd |
| mov ecx, [eax] |
| sub ecx, 512 |
| jae @f |
| add edi, ecx |
| neg ecx |
| push eax |
| xor eax, eax |
| rep stosb |
| pop eax |
| @@: |
| mov [eax], ecx |
| mov dx, [edx*2+RAMDISK_FAT] |
| mov [eax+4], dx ; high word is already zero |
| popad |
| xor eax, eax |
| ret |
| .eof: |
| popad |
| mov eax, 6 |
| ret |
| |
| ;---------------------------------------------------------------- |
| ; |
| ; fs_RamdiskDelete - delete file or empty folder from ramdisk |
| ; |
| ; esi points to filename |