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AX = 4301h CX = new file attributes (see #01420) DS:DX -> ASCIZ filename
Return:
CF clear if successful AX destroyed CF set on error AX = error code (01h,02h,03h,05h) (see #01680 at AH=59h)
Notes: Will not change volume label or directory attribute bits, but will change the other attribute bits of a directory (the directory bit must be cleared to successfully change the other attributes of a directory, but the directory will not be changed to a normal file as a result). MS-DOS 4.01 reportedly closes the file if it is currently open. For security reasons, the Novell NetWare execute-only bit can never be cleared; the file must be deleted and recreated. Under the FlashTek X-32 DOS extender, the filename pointer is in DS:EDX. DOS 5.0 SHARE will close the file if it is currently open in sharing- compatibility mode, otherwise a sharing violation critical error is generated if the file is currently open. DR DOS 3.41/5.0 will silently ignore attempts to change the 'directory' attribute bit
See Also:
AX=4300h - AX=4311h - AX=7143h - INT 2F/AX=110E
Bitfields for file attributes:
Bit(s) Description (Table 01420)
7 shareable (Novell NetWare)
7 pending deleted files (Novell DOS, OpenDOS)
6 unused
5 archive
4 directory
3 volume label.
Execute-only (Novell NetWare)
2 system
1 hidden
0 read-only
Category:
DOS Kernel
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Int 21h
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D
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