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- /*-----------------------------------------------------------------------*
- * filename - unlink.cas
- *
- * function(s)
- * unlink - deletes a file
- *-----------------------------------------------------------------------*/
-
- /*[]------------------------------------------------------------[]*/
- /*| |*/
- /*| Turbo C Run Time Library - Version 3.0 |*/
- /*| |*/
- /*| |*/
- /*| Copyright (c) 1987,1988,1990 by Borland International |*/
- /*| All Rights Reserved. |*/
- /*| |*/
- /*[]------------------------------------------------------------[]*/
-
- #pragma inline
- #include <asmrules.h>
- #include <dos.h>
- #include <_io.h>
-
- /*-----------------------------------------------------------------------*
-
- Name unlink - deletes a file
-
- Usage int unlink(const char *filename);
-
- Related
- functions usage int remove(const char *filename);
-
- Prototype in dos.h
-
- Description unlink deletes a file specified by filename. Any
- MS-DOS drive, path, and file name may be used as a filename.
- Wildcards are not allowed.
-
- Read-only files cannot be deleted by this call. To remove
- read-only files, first use chmod or _chmod to change the
- read-only attribute.
-
- remove is a macro that simply translates the call to a call
- to unlink.
-
- Return value On successful completion, a 0 is returned. On
- error, a -1 is returned, and errno is set to one of the
- following values:
-
- ENOENT Path or file name not found
- EACCES Permission denied
-
- *------------------------------------------------------------------------*/
- int _CType unlink(const char *filename)
- {
- pushDS_
- asm mov ah, 041h
- asm LDS_ dx, filename
- asm int 021H
- popDS_
- asm jc unlinkFailed
- return(0);
-
- unlinkFailed:
- return __IOerror(_AX);
- }
-