Set Public File Read / Write Attributes
|
Server |
Y |
Station |
Y |
Interrupt |
21h |
|
Input |
Output |
| AX |
FFh |
DAh |
|
Error Code
(CF) |
AX |
| BX |
Read
Attributes |
Write
Attributes |
|
|
BX |
| CX |
|
03h |
|
|
CX |
| DS:DX |
ASCIIZ
File Name |
|
|
DX |
Error Codes:
F2h = File not found
03h = Path not found
F1h = Invalid access (not the superuser or owner)
|
Representation of the file attributes in BH
|
| Bit |
Dec |
Hex |
Description |
| 0 |
1 |
01h |
Group Number 0 |
| 1 |
2 |
02h |
Group Number 1 |
| 2 |
4 |
04h |
Group Number 2 |
| 3 |
8 |
08h |
Group Number 3 |
| 4 |
16 |
10h |
Group Number 4 |
| 5 |
32 |
20h |
Group Number 5 |
| 6 |
64 |
40h |
Group Number 6 |
| 7 |
128 |
80h |
Group Number 7 |
0 indicates that Read Attributes are GRANTED
1 indicates that Read Attributes are DENIED
|
Representation of the file attributes in BL
|
| Bit |
Dec |
Hex |
Description |
| 0 |
1 |
01h |
Group Number 0 |
| 1 |
2 |
02h |
Group Number 1 |
| 2 |
4 |
04h |
Group Number 2 |
| 3 |
8 |
08h |
Group Number 3 |
| 4 |
16 |
10h |
Group Number 4 |
| 5 |
32 |
20h |
Group Number 5 |
| 6 |
64 |
40h |
Group Number 6 |
| 7 |
128 |
80h |
Group Number 7 |
0 indicates that Write Attributes are GRANTED
1 indicates that Write Attributes are DENIED |